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- Committer: Teddy Hogeborn
- Date: 2018-02-08 10:23:55 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 362.
- Revision ID: teddy@recompile.se-20180208102355-3ent7sf87i9h9kka
Update copyright year to 2018
* DBUS-API: Update copyright year to 2018.
* debian/copyright: - '' -
* initramfs-unpack: - '' -
* intro.xml: - '' -
* mandos: - '' -
* mandos-clients.conf.xml: - '' -
* mandos-ctl: - '' -
* mandos-ctl.xml: - '' -
* mandos-keygen: - '' -
* mandos-keygen.xml: - '' -
* mandos-monitor: - '' -
* mandos-monitor.xml: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
* network-hooks.d/bridge: - '' -
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: - '' -
* plugin-runner.c: - '' -
* plugin-runner.xml: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/askpass-fifo.xml: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/password-prompt.xml: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/plymouth.xml: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/splashy.xml: - '' -
* plugins.d/usplash.c: - '' -
* plugins.d/usplash.xml: - '' -
* DBUS-API: Update copyright year to 2018.
* debian/copyright: - '' -
* initramfs-unpack: - '' -
* intro.xml: - '' -
* mandos: - '' -
* mandos-clients.conf.xml: - '' -
* mandos-ctl: - '' -
* mandos-ctl.xml: - '' -
* mandos-keygen: - '' -
* mandos-keygen.xml: - '' -
* mandos-monitor: - '' -
* mandos-monitor.xml: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
* network-hooks.d/bridge: - '' -
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: - '' -
* plugin-runner.c: - '' -
* plugin-runner.xml: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/askpass-fifo.xml: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/password-prompt.xml: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/plymouth.xml: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/splashy.xml: - '' -
* plugins.d/usplash.c: - '' -
* plugins.d/usplash.xml: - '' -
- files added:
- bugs.xml
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 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
14
# Copyright © 2008-2018 Teddy Hogeborn
15
# Copyright © 2008-2018 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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
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
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
37
47
import socket
38
import optparse
48
import argparse
39
49
import datetime
40
50
import errno
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
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
48
55
import sys
49
56
import re
50
57
import os
59
66
import struct
60
67
import fcntl
61
68
import functools
62
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
64
80
65
81
import dbus
66
82
import dbus.service
67
import gobject
68
import avahi
83
from gi.repository import GLib
69
84
from dbus.mainloop.glib import DBusGMainLoop
70
85
import ctypes
71
86
import ctypes.util
72
87
import xml.dom.minidom
73
88
import inspect
74
89
90
# Try to find the value of SO_BINDTODEVICE:
75
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
76
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
95
except AttributeError:
78
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
79
99
from IN import SO_BINDTODEVICE
80
100
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.7.16"
119
stored_state_file = "clients.pickle"
120
121
logger = logging.getLogger()
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
101
303
102
304
class AvahiError(Exception):
103
305
def __init__(self, value, *args, **kwargs):
104
306
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
108
310
109
311
class AvahiServiceError(AvahiError):
110
312
pass
111
313
314
112
315
class AvahiGroupError(AvahiError):
113
316
pass
114
317
115
318
116
319
class AvahiService(object):
117
320
"""An Avahi (Zeroconf) service.
118
321
119
322
Attributes:
120
323
interface: integer; avahi.IF_UNSPEC or an interface index.
121
324
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
325
name: string; Example: 'Mandos'
326
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
125
328
port: integer; what port to announce
126
329
TXT: list of strings; TXT record for the service
127
330
domain: string; Domain to publish on, default to .local if empty.
133
336
server: D-Bus Server
134
337
bus: dbus.SystemBus()
135
338
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
140
351
self.interface = interface
141
352
self.name = name
142
353
self.type = servicetype
150
361
self.group = None # our entry group
151
362
self.server = None
152
363
self.bus = bus
153
def rename(self):
364
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
154
367
"""Derived from the Avahi example code"""
155
368
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
369
logger.critical("No suitable Zeroconf service name found"
370
" after %i retries, exiting.",
158
371
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
372
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
376
logger.info("Changing Zeroconf service name to %r ...",
162
377
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
378
if remove:
379
self.remove()
168
380
try:
169
381
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
382
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
175
392
def remove(self):
176
393
"""Derived from the Avahi example code"""
394
if self.entry_group_state_changed_match is not None:
395
self.entry_group_state_changed_match.remove()
396
self.entry_group_state_changed_match = None
177
397
if self.group is not None:
178
398
self.group.Reset()
399
179
400
def add(self):
180
401
"""Derived from the Avahi example code"""
402
self.remove()
181
403
if self.group is None:
182
404
self.group = dbus.Interface(
183
405
self.bus.get_object(avahi.DBUS_NAME,
184
406
self.server.EntryGroupNew()),
185
407
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
408
self.entry_group_state_changed_match = (
409
self.group.connect_to_signal(
410
'StateChanged', self.entry_group_state_changed))
411
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
412
self.name, self.type)
191
413
self.group.AddService(
192
414
self.interface,
197
419
dbus.UInt16(self.port),
198
420
avahi.string_array_to_txt_array(self.TXT))
199
421
self.group.Commit()
422
200
423
def entry_group_state_changed(self, state, error):
201
424
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
425
logger.debug("Avahi entry group state change: %i", state)
426
204
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
428
logger.debug("Zeroconf service established.")
206
429
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
430
logger.info("Zeroconf service name collision.")
208
431
self.rename()
209
432
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
433
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
214
437
def cleanup(self):
215
438
"""Derived from the Avahi example code"""
216
439
if self.group is not None:
217
self.group.Free()
440
try:
441
self.group.Free()
442
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
444
pass
218
445
self.group = None
219
def server_state_changed(self, state):
446
self.remove()
447
448
def server_state_changed(self, state, error=None):
220
449
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
450
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
457
if state in bad_states:
458
if bad_states[state] is not None:
459
if error is None:
460
logger.error(bad_states[state])
461
else:
462
logger.error(bad_states[state] + ": %r", error)
463
self.cleanup()
225
464
elif state == avahi.SERVER_RUNNING:
226
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
477
else:
478
if error is None:
479
logger.debug("Unknown state: %r", state)
480
else:
481
logger.debug("Unknown state: %r: %r", state, error)
482
227
483
def activate(self):
228
484
"""Derived from the Avahi example code"""
229
485
if self.server is None:
230
486
self.server = dbus.Interface(
231
487
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
488
avahi.DBUS_PATH_SERVER,
489
follow_name_owner_changes=True),
233
490
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
491
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
236
493
self.server_state_changed(self.server.GetState())
237
494
238
495
496
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
498
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(self, *args,
500
**kwargs)
501
syslogger.setFormatter(logging.Formatter(
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
503
.format(self.name)))
504
return ret
505
506
507
# Pretend that we have a GnuTLS module
508
class GnuTLS(object):
509
"""This isn't so much a class as it is a module-like namespace.
510
It is instantiated once, and simulates having a GnuTLS module."""
511
512
library = ctypes.util.find_library("gnutls")
513
if library is None:
514
library = ctypes.util.find_library("gnutls-deb0")
515
_library = ctypes.cdll.LoadLibrary(library)
516
del library
517
_need_version = b"3.3.0"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CLIENT = 2
535
SHUT_RDWR = 0
536
CRD_CERTIFICATE = 1
537
E_NO_CERTIFICATE_FOUND = -49
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
539
540
# Types
541
class session_int(ctypes.Structure):
542
_fields_ = []
543
session_t = ctypes.POINTER(session_int)
544
545
class certificate_credentials_st(ctypes.Structure):
546
_fields_ = []
547
certificate_credentials_t = ctypes.POINTER(
548
certificate_credentials_st)
549
certificate_type_t = ctypes.c_int
550
551
class datum_t(ctypes.Structure):
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
553
('size', ctypes.c_uint)]
554
555
class openpgp_crt_int(ctypes.Structure):
556
_fields_ = []
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
560
credentials_type_t = ctypes.c_int
561
transport_ptr_t = ctypes.c_void_p
562
close_request_t = ctypes.c_int
563
564
# Exceptions
565
class Error(Exception):
566
# We need to use the class name "GnuTLS" here, since this
567
# exception might be raised from within GnuTLS.__init__,
568
# which is called before the assignment to the "gnutls"
569
# global variable has happened.
570
def __init__(self, message=None, code=None, args=()):
571
# Default usage is by a message string, but if a return
572
# code is passed, convert it to a string with
573
# gnutls.strerror()
574
self.code = code
575
if message is None and code is not None:
576
message = GnuTLS.strerror(code)
577
return super(GnuTLS.Error, self).__init__(
578
message, *args)
579
580
class CertificateSecurityError(Error):
581
pass
582
583
# Classes
584
class Credentials(object):
585
def __init__(self):
586
self._c_object = gnutls.certificate_credentials_t()
587
gnutls.certificate_allocate_credentials(
588
ctypes.byref(self._c_object))
589
self.type = gnutls.CRD_CERTIFICATE
590
591
def __del__(self):
592
gnutls.certificate_free_credentials(self._c_object)
593
594
class ClientSession(object):
595
def __init__(self, socket, credentials=None):
596
self._c_object = gnutls.session_t()
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
598
gnutls.set_default_priority(self._c_object)
599
gnutls.transport_set_ptr(self._c_object, socket.fileno())
600
gnutls.handshake_set_private_extensions(self._c_object,
601
True)
602
self.socket = socket
603
if credentials is None:
604
credentials = gnutls.Credentials()
605
gnutls.credentials_set(self._c_object, credentials.type,
606
ctypes.cast(credentials._c_object,
607
ctypes.c_void_p))
608
self.credentials = credentials
609
610
def __del__(self):
611
gnutls.deinit(self._c_object)
612
613
def handshake(self):
614
return gnutls.handshake(self._c_object)
615
616
def send(self, data):
617
data = bytes(data)
618
data_len = len(data)
619
while data_len > 0:
620
data_len -= gnutls.record_send(self._c_object,
621
data[-data_len:],
622
data_len)
623
624
def bye(self):
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
627
# Error handling functions
628
def _error_code(result):
629
"""A function to raise exceptions on errors, suitable
630
for the 'restype' attribute on ctypes functions"""
631
if result >= 0:
632
return result
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
636
637
def _retry_on_error(result, func, arguments):
638
"""A function to retry on some errors, suitable
639
for the 'errcheck' attribute on ctypes functions"""
640
while result < 0:
641
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
642
return _error_code(result)
643
result = func(*arguments)
644
return result
645
646
# Unless otherwise indicated, the function declarations below are
647
# all from the gnutls/gnutls.h C header file.
648
649
# Functions
650
priority_set_direct = _library.gnutls_priority_set_direct
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
652
ctypes.POINTER(ctypes.c_char_p)]
653
priority_set_direct.restype = _error_code
654
655
init = _library.gnutls_init
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
657
init.restype = _error_code
658
659
set_default_priority = _library.gnutls_set_default_priority
660
set_default_priority.argtypes = [session_t]
661
set_default_priority.restype = _error_code
662
663
record_send = _library.gnutls_record_send
664
record_send.argtypes = [session_t, ctypes.c_void_p,
665
ctypes.c_size_t]
666
record_send.restype = ctypes.c_ssize_t
667
record_send.errcheck = _retry_on_error
668
669
certificate_allocate_credentials = (
670
_library.gnutls_certificate_allocate_credentials)
671
certificate_allocate_credentials.argtypes = [
672
ctypes.POINTER(certificate_credentials_t)]
673
certificate_allocate_credentials.restype = _error_code
674
675
certificate_free_credentials = (
676
_library.gnutls_certificate_free_credentials)
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
679
certificate_free_credentials.restype = None
680
681
handshake_set_private_extensions = (
682
_library.gnutls_handshake_set_private_extensions)
683
handshake_set_private_extensions.argtypes = [session_t,
684
ctypes.c_int]
685
handshake_set_private_extensions.restype = None
686
687
credentials_set = _library.gnutls_credentials_set
688
credentials_set.argtypes = [session_t, credentials_type_t,
689
ctypes.c_void_p]
690
credentials_set.restype = _error_code
691
692
strerror = _library.gnutls_strerror
693
strerror.argtypes = [ctypes.c_int]
694
strerror.restype = ctypes.c_char_p
695
696
certificate_type_get = _library.gnutls_certificate_type_get
697
certificate_type_get.argtypes = [session_t]
698
certificate_type_get.restype = _error_code
699
700
certificate_get_peers = _library.gnutls_certificate_get_peers
701
certificate_get_peers.argtypes = [session_t,
702
ctypes.POINTER(ctypes.c_uint)]
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
705
global_set_log_level = _library.gnutls_global_set_log_level
706
global_set_log_level.argtypes = [ctypes.c_int]
707
global_set_log_level.restype = None
708
709
global_set_log_function = _library.gnutls_global_set_log_function
710
global_set_log_function.argtypes = [log_func]
711
global_set_log_function.restype = None
712
713
deinit = _library.gnutls_deinit
714
deinit.argtypes = [session_t]
715
deinit.restype = None
716
717
handshake = _library.gnutls_handshake
718
handshake.argtypes = [session_t]
719
handshake.restype = _error_code
720
handshake.errcheck = _retry_on_error
721
722
transport_set_ptr = _library.gnutls_transport_set_ptr
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
724
transport_set_ptr.restype = None
725
726
bye = _library.gnutls_bye
727
bye.argtypes = [session_t, close_request_t]
728
bye.restype = _error_code
729
bye.errcheck = _retry_on_error
730
731
check_version = _library.gnutls_check_version
732
check_version.argtypes = [ctypes.c_char_p]
733
check_version.restype = ctypes.c_char_p
734
735
# All the function declarations below are from gnutls/openpgp.h
736
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
739
openpgp_crt_init.restype = _error_code
740
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
743
ctypes.POINTER(datum_t),
744
openpgp_crt_fmt_t]
745
openpgp_crt_import.restype = _error_code
746
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
749
ctypes.POINTER(ctypes.c_uint)]
750
openpgp_crt_verify_self.restype = _error_code
751
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
754
openpgp_crt_deinit.restype = None
755
756
openpgp_crt_get_fingerprint = (
757
_library.gnutls_openpgp_crt_get_fingerprint)
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
759
ctypes.c_void_p,
760
ctypes.POINTER(
761
ctypes.c_size_t)]
762
openpgp_crt_get_fingerprint.restype = _error_code
763
764
# Remove non-public functions
765
del _error_code, _retry_on_error
766
# Create the global "gnutls" object, simulating a module
767
gnutls = GnuTLS()
768
769
770
def call_pipe(connection, # : multiprocessing.Connection
771
func, *args, **kwargs):
772
"""This function is meant to be called by multiprocessing.Process
773
774
This function runs func(*args, **kwargs), and writes the resulting
775
return value on the provided multiprocessing.Connection.
776
"""
777
connection.send(func(*args, **kwargs))
778
connection.close()
779
780
239
781
class Client(object):
240
782
"""A representation of a client host served by this server.
241
783
242
784
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
785
approved: bool(); 'None' if not yet approved/disapproved
244
786
approval_delay: datetime.timedelta(); Time to wait for approval
245
787
approval_duration: datetime.timedelta(); Duration of one approval
246
788
checker: subprocess.Popen(); a running checker process used
247
789
to see if the client lives.
248
790
'None' if no process is running.
249
checker_callback_tag: a gobject event source tag, or None
791
checker_callback_tag: a GLib event source tag, or None
250
792
checker_command: string; External command which is run to check
251
793
if client lives. %() expansions are done at
252
794
runtime with vars(self) as dict, so that for
253
795
instance %(name)s can be used in the command.
254
checker_initiator_tag: a gobject event source tag, or None
796
checker_initiator_tag: a GLib event source tag, or None
255
797
created: datetime.datetime(); (UTC) object creation
798
client_structure: Object describing what attributes a client has
799
and is used for storing the client at exit
256
800
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
801
disable_initiator_tag: a GLib event source tag, or None
259
802
enabled: bool()
260
803
fingerprint: string (40 or 32 hexadecimal digits); used to
261
804
uniquely identify the client
263
806
interval: datetime.timedelta(); How often to start a new checker
264
807
last_approval_request: datetime.datetime(); (UTC) or None
265
808
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
809
last_checker_status: integer between 0 and 255 reflecting exit
810
status of last checker. -1 reflects crashed
811
checker, -2 means no checker completed yet.
812
last_checker_signal: The signal which killed the last checker, if
813
last_checker_status is -1
814
last_enabled: datetime.datetime(); (UTC) or None
267
815
name: string; from the config file, used in log messages and
268
816
D-Bus identifiers
269
817
secret: bytestring; sent verbatim (over TLS) to client
270
818
timeout: datetime.timedelta(); How long from last_checked_ok
271
819
until this client is disabled
820
extended_timeout: extra long timeout when secret has been sent
272
821
runtime_expansions: Allowed attributes for runtime expansion.
822
expires: datetime.datetime(); time (UTC) when a client will be
823
disabled, or None
824
server_settings: The server_settings dict from main()
273
825
"""
274
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
826
827
runtime_expansions = ("approval_delay", "approval_duration",
828
"created", "enabled", "expires",
829
"fingerprint", "host", "interval",
830
"last_approval_request", "last_checked_ok",
831
"last_enabled", "name", "timeout")
832
client_defaults = {
833
"timeout": "PT5M",
834
"extended_timeout": "PT15M",
835
"interval": "PT2M",
836
"checker": "fping -q -- %%(host)s",
837
"host": "",
838
"approval_delay": "PT0S",
839
"approval_duration": "PT1S",
840
"approved_by_default": "True",
841
"enabled": "True",
842
}
843
280
844
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
845
def config_parser(config):
846
"""Construct a new dict of client settings of this form:
847
{ client_name: {setting_name: value, ...}, ...}
848
with exceptions for any special settings as defined above.
849
NOTE: Must be a pure function. Must return the same result
850
value given the same arguments.
851
"""
852
settings = {}
853
for client_name in config.sections():
854
section = dict(config.items(client_name))
855
client = settings[client_name] = {}
856
857
client["host"] = section["host"]
858
# Reformat values from string types to Python types
859
client["approved_by_default"] = config.getboolean(
860
client_name, "approved_by_default")
861
client["enabled"] = config.getboolean(client_name,
862
"enabled")
863
864
# Uppercase and remove spaces from fingerprint for later
865
# comparison purposes with return value from the
866
# fingerprint() function
867
client["fingerprint"] = (section["fingerprint"].upper()
868
.replace(" ", ""))
869
if "secret" in section:
870
client["secret"] = codecs.decode(section["secret"]
871
.encode("utf-8"),
872
"base64")
873
elif "secfile" in section:
874
with open(os.path.expanduser(os.path.expandvars
875
(section["secfile"])),
876
"rb") as secfile:
877
client["secret"] = secfile.read()
878
else:
879
raise TypeError("No secret or secfile for section {}"
880
.format(section))
881
client["timeout"] = string_to_delta(section["timeout"])
882
client["extended_timeout"] = string_to_delta(
883
section["extended_timeout"])
884
client["interval"] = string_to_delta(section["interval"])
885
client["approval_delay"] = string_to_delta(
886
section["approval_delay"])
887
client["approval_duration"] = string_to_delta(
888
section["approval_duration"])
889
client["checker_command"] = section["checker"]
890
client["last_approval_request"] = None
891
client["last_checked_ok"] = None
892
client["last_checker_status"] = -2
893
894
return settings
895
896
def __init__(self, settings, name=None, server_settings=None):
302
897
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
306
# Uppercase and remove spaces from fingerprint for later
307
# comparison purposes with return value from the fingerprint()
308
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
898
if server_settings is None:
899
server_settings = {}
900
self.server_settings = server_settings
901
# adding all client settings
902
for setting, value in settings.items():
903
setattr(self, setting, value)
904
905
if self.enabled:
906
if not hasattr(self, "last_enabled"):
907
self.last_enabled = datetime.datetime.utcnow()
908
if not hasattr(self, "expires"):
909
self.expires = (datetime.datetime.utcnow()
910
+ self.timeout)
319
911
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
912
self.last_enabled = None
913
self.expires = None
914
915
logger.debug("Creating client %r", self.name)
916
logger.debug(" Fingerprint: %s", self.fingerprint)
917
self.created = settings.get("created",
918
datetime.datetime.utcnow())
919
920
# attributes specific for this server instance
331
921
self.checker = None
332
922
self.checker_initiator_tag = None
333
923
self.disable_initiator_tag = None
334
924
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
925
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
926
self.approved = None
341
927
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
347
928
self.changedstate = multiprocessing_manager.Condition(
929
multiprocessing_manager.Lock())
930
self.client_structure = [attr
931
for attr in self.__dict__.keys()
932
if not attr.startswith("_")]
933
self.client_structure.append("client_structure")
934
935
for name, t in inspect.getmembers(
936
type(self), lambda obj: isinstance(obj, property)):
937
if not name.startswith("_"):
938
self.client_structure.append(name)
939
940
# Send notice to process children that client state has changed
348
941
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
942
with self.changedstate:
943
self.changedstate.notify_all()
944
353
945
def enable(self):
354
946
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
947
if getattr(self, "enabled", False):
356
948
# Already enabled
357
949
return
358
self.send_changedstate()
950
self.expires = datetime.datetime.utcnow() + self.timeout
951
self.enabled = True
359
952
self.last_enabled = datetime.datetime.utcnow()
953
self.init_checker()
954
self.send_changedstate()
955
956
def disable(self, quiet=True):
957
"""Disable this client."""
958
if not getattr(self, "enabled", False):
959
return False
960
if not quiet:
961
logger.info("Disabling client %s", self.name)
962
if getattr(self, "disable_initiator_tag", None) is not None:
963
GLib.source_remove(self.disable_initiator_tag)
964
self.disable_initiator_tag = None
965
self.expires = None
966
if getattr(self, "checker_initiator_tag", None) is not None:
967
GLib.source_remove(self.checker_initiator_tag)
968
self.checker_initiator_tag = None
969
self.stop_checker()
970
self.enabled = False
971
if not quiet:
972
self.send_changedstate()
973
# Do not run this again if called by a GLib.timeout_add
974
return False
975
976
def __del__(self):
977
self.disable()
978
979
def init_checker(self):
360
980
# Schedule a new checker to be started an 'interval' from now,
361
981
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
982
if self.checker_initiator_tag is not None:
983
GLib.source_remove(self.checker_initiator_tag)
984
self.checker_initiator_tag = GLib.timeout_add(
985
int(self.interval.total_seconds() * 1000),
986
self.start_checker)
365
987
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
988
if self.disable_initiator_tag is not None:
989
GLib.source_remove(self.disable_initiator_tag)
990
self.disable_initiator_tag = GLib.timeout_add(
991
int(self.timeout.total_seconds() * 1000), self.disable)
370
992
# Also start a new checker *right now*.
371
993
self.start_checker()
372
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
def checker_callback(self, pid, condition, command):
994
995
def checker_callback(self, source, condition, connection,
996
command):
399
997
"""The checker has completed, so take appropriate actions."""
400
998
self.checker_callback_tag = None
401
999
self.checker = None
402
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
1000
# Read return code from connection (see call_pipe)
1001
returncode = connection.recv()
1002
connection.close()
1003
1004
if returncode >= 0:
1005
self.last_checker_status = returncode
1006
self.last_checker_signal = None
1007
if self.last_checker_status == 0:
1008
logger.info("Checker for %(name)s succeeded",
406
1009
vars(self))
407
1010
self.checked_ok()
408
1011
else:
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
1012
logger.info("Checker for %(name)s failed", vars(self))
411
1013
else:
412
logger.warning(u"Checker for %(name)s crashed?",
1014
self.last_checker_status = -1
1015
self.last_checker_signal = -returncode
1016
logger.warning("Checker for %(name)s crashed?",
413
1017
vars(self))
414
1018
return False
1019
415
1020
def checked_ok(self):
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
1021
"""Assert that the client has been seen, alive and well."""
421
1022
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
426
1023
self.last_checker_status = 0
1024
self.last_checker_signal = None
1025
self.bump_timeout()
1026
1027
def bump_timeout(self, timeout=None):
1028
"""Bump up the timeout for this client."""
1029
if timeout is None:
1030
timeout = self.timeout
1031
if self.disable_initiator_tag is not None:
1032
GLib.source_remove(self.disable_initiator_tag)
1033
self.disable_initiator_tag = None
1034
if getattr(self, "enabled", False):
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(timeout.total_seconds() * 1000), self.disable)
1037
self.expires = datetime.datetime.utcnow() + timeout
1038
427
1039
def need_approval(self):
428
1040
self.last_approval_request = datetime.datetime.utcnow()
429
1041
430
1042
def start_checker(self):
431
1043
"""Start a new checker subprocess if one is not running.
432
1044
433
1045
If a checker already exists, leave it running and do
434
1046
nothing."""
435
1047
# The reason for not killing a running checker is that if we
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
1048
# did that, and if a checker (for some reason) started running
1049
# slowly and taking more than 'interval' time, then the client
1050
# would inevitably timeout, since no checker would get a
1051
# chance to run to completion. If we instead leave running
440
1052
# checkers alone, the checker would have to take more time
441
1053
# than 'timeout' for the client to be disabled, which is as it
442
1054
# should be.
443
444
# If a checker exists, make sure it is not a zombie
445
try:
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
if pid:
453
logger.warning(u"Checker was a zombie")
454
gobject.source_remove(self.checker_callback_tag)
455
self.checker_callback(pid, status,
456
self.current_checker_command)
1055
1056
if self.checker is not None and not self.checker.is_alive():
1057
logger.warning("Checker was not alive; joining")
1058
self.checker.join()
1059
self.checker = None
457
1060
# Start a new checker if needed
458
1061
if self.checker is None:
1062
# Escape attributes for the shell
1063
escaped_attrs = {
1064
attr: re.escape(str(getattr(self, attr)))
1065
for attr in self.runtime_expansions}
459
1066
try:
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
1067
command = self.checker_command % escaped_attrs
1068
except TypeError as error:
1069
logger.error('Could not format string "%s"',
1070
self.checker_command,
1071
exc_info=error)
1072
return True # Try again later
478
1073
self.current_checker_command = command
479
try:
480
logger.info(u"Starting checker %r for %s",
481
command, self.name)
482
# We don't need to redirect stdout and stderr, since
483
# in normal mode, that is already done by daemon(),
484
# and in debug mode we don't want to. (Stdin is
485
# always replaced by /dev/null.)
486
self.checker = subprocess.Popen(command,
487
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
495
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
502
# Re-run this periodically if run by gobject.timeout_add
1074
logger.info("Starting checker %r for %s", command,
1075
self.name)
1076
# We don't need to redirect stdout and stderr, since
1077
# in normal mode, that is already done by daemon(),
1078
# and in debug mode we don't want to. (Stdin is
1079
# always replaced by /dev/null.)
1080
# The exception is when not debugging but nevertheless
1081
# running in the foreground; use the previously
1082
# created wnull.
1083
popen_args = {"close_fds": True,
1084
"shell": True,
1085
"cwd": "/"}
1086
if (not self.server_settings["debug"]
1087
and self.server_settings["foreground"]):
1088
popen_args.update({"stdout": wnull,
1089
"stderr": wnull})
1090
pipe = multiprocessing.Pipe(duplex=False)
1091
self.checker = multiprocessing.Process(
1092
target=call_pipe,
1093
args=(pipe[1], subprocess.call, command),
1094
kwargs=popen_args)
1095
self.checker.start()
1096
self.checker_callback_tag = GLib.io_add_watch(
1097
pipe[0].fileno(), GLib.IO_IN,
1098
self.checker_callback, pipe[0], command)
1099
# Re-run this periodically if run by GLib.timeout_add
503
1100
return True
504
1101
505
1102
def stop_checker(self):
506
1103
"""Force the checker process, if any, to stop."""
507
1104
if self.checker_callback_tag:
508
gobject.source_remove(self.checker_callback_tag)
1105
GLib.source_remove(self.checker_callback_tag)
509
1106
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
1107
if getattr(self, "checker", None) is None:
511
1108
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
516
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
519
if error.errno != errno.ESRCH: # No such process
520
raise
1109
logger.debug("Stopping checker for %(name)s", vars(self))
1110
self.checker.terminate()
521
1111
self.checker = None
522
1112
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
1113
1114
def dbus_service_property(dbus_interface,
1115
signature="v",
1116
access="readwrite",
1117
byte_arrays=False):
525
1118
"""Decorators for marking methods of a DBusObjectWithProperties to
526
1119
become properties on the D-Bus.
527
1120
528
1121
The decorated method will be called with no arguments by "Get"
529
1122
and with one argument by "Set".
530
1123
531
1124
The parameters, where they are supported, are the same as
532
1125
dbus.service.method, except there is only "signature", since the
533
1126
type from Get() and the type sent to Set() is the same.
534
1127
"""
535
1128
# Encoding deeply encoded byte arrays is not supported yet by the
536
1129
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
1130
if byte_arrays and signature != "ay":
1131
raise ValueError("Byte arrays not supported for non-'ay'"
1132
" signature {!r}".format(signature))
1133
540
1134
def decorator(func):
541
1135
func._dbus_is_property = True
542
1136
func._dbus_interface = dbus_interface
543
1137
func._dbus_signature = signature
544
1138
func._dbus_access = access
545
1139
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
1140
if func._dbus_name.endswith("_dbus_property"):
547
1141
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1143
return func
1144
1145
return decorator
1146
1147
1148
def dbus_interface_annotations(dbus_interface):
1149
"""Decorator for marking functions returning interface annotations
1150
1151
Usage:
1152
1153
@dbus_interface_annotations("org.example.Interface")
1154
def _foo(self): # Function name does not matter
1155
return {"org.freedesktop.DBus.Deprecated": "true",
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1157
"false"}
1158
"""
1159
1160
def decorator(func):
1161
func._dbus_is_interface = True
1162
func._dbus_interface = dbus_interface
1163
func._dbus_name = dbus_interface
1164
return func
1165
1166
return decorator
1167
1168
1169
def dbus_annotations(annotations):
1170
"""Decorator to annotate D-Bus methods, signals or properties
1171
Usage:
1172
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1174
"org.freedesktop.DBus.Property."
1175
"EmitsChangedSignal": "false"})
1176
@dbus_service_property("org.example.Interface", signature="b",
1177
access="r")
1178
def Property_dbus_property(self):
1179
return dbus.Boolean(False)
1180
1181
See also the DBusObjectWithAnnotations class.
1182
"""
1183
1184
def decorator(func):
1185
func._dbus_annotations = annotations
1186
return func
1187
550
1188
return decorator
551
1189
552
1190
553
1191
class DBusPropertyException(dbus.exceptions.DBusException):
554
1192
"""A base class for D-Bus property-related exceptions
555
1193
"""
556
def __unicode__(self):
557
return unicode(str(self))
1194
pass
558
1195
559
1196
560
1197
class DBusPropertyAccessException(DBusPropertyException):
569
1206
pass
570
1207
571
1208
572
class DBusObjectWithProperties(dbus.service.Object):
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1210
"""A D-Bus object with annotations.
1211
1212
Classes inheriting from this can use the dbus_annotations
1213
decorator to add annotations to methods or signals.
1214
"""
1215
1216
@staticmethod
1217
def _is_dbus_thing(thing):
1218
"""Returns a function testing if an attribute is a D-Bus thing
1219
1220
If called like _is_dbus_thing("method") it returns a function
1221
suitable for use as predicate to inspect.getmembers().
1222
"""
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1224
False)
1225
1226
def _get_all_dbus_things(self, thing):
1227
"""Returns a generator of (name, attribute) pairs
1228
"""
1229
return ((getattr(athing.__get__(self), "_dbus_name", name),
1230
athing.__get__(self))
1231
for cls in self.__class__.__mro__
1232
for name, athing in
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
out_signature="s",
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1239
def Introspect(self, object_path, connection):
1240
"""Overloading of standard D-Bus method.
1241
1242
Inserts annotation tags on methods and signals.
1243
"""
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1245
connection)
1246
try:
1247
document = xml.dom.minidom.parseString(xmlstring)
1248
1249
for if_tag in document.getElementsByTagName("interface"):
1250
# Add annotation tags
1251
for typ in ("method", "signal"):
1252
for tag in if_tag.getElementsByTagName(typ):
1253
annots = dict()
1254
for name, prop in (self.
1255
_get_all_dbus_things(typ)):
1256
if (name == tag.getAttribute("name")
1257
and prop._dbus_interface
1258
== if_tag.getAttribute("name")):
1259
annots.update(getattr(
1260
prop, "_dbus_annotations", {}))
1261
for name, value in annots.items():
1262
ann_tag = document.createElement(
1263
"annotation")
1264
ann_tag.setAttribute("name", name)
1265
ann_tag.setAttribute("value", value)
1266
tag.appendChild(ann_tag)
1267
# Add interface annotation tags
1268
for annotation, value in dict(
1269
itertools.chain.from_iterable(
1270
annotations().items()
1271
for name, annotations
1272
in self._get_all_dbus_things("interface")
1273
if name == if_tag.getAttribute("name")
1274
)).items():
1275
ann_tag = document.createElement("annotation")
1276
ann_tag.setAttribute("name", annotation)
1277
ann_tag.setAttribute("value", value)
1278
if_tag.appendChild(ann_tag)
1279
# Fix argument name for the Introspect method itself
1280
if (if_tag.getAttribute("name")
1281
== dbus.INTROSPECTABLE_IFACE):
1282
for cn in if_tag.getElementsByTagName("method"):
1283
if cn.getAttribute("name") == "Introspect":
1284
for arg in cn.getElementsByTagName("arg"):
1285
if (arg.getAttribute("direction")
1286
== "out"):
1287
arg.setAttribute("name",
1288
"xml_data")
1289
xmlstring = document.toxml("utf-8")
1290
document.unlink()
1291
except (AttributeError, xml.dom.DOMException,
1292
xml.parsers.expat.ExpatError) as error:
1293
logger.error("Failed to override Introspection method",
1294
exc_info=error)
1295
return xmlstring
1296
1297
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
1299
"""A D-Bus object with properties.
574
1300
575
1301
Classes inheriting from this can use the dbus_service_property
576
1302
decorator to expose methods as D-Bus properties. It exposes the
577
1303
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
1304
"""
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
1305
591
1306
def _get_dbus_property(self, interface_name, property_name):
592
1307
"""Returns a bound method if one exists which is a D-Bus
593
1308
property with the specified name and interface.
594
1309
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
1310
for cls in self.__class__.__mro__:
1311
for name, value in inspect.getmembers(
1312
cls, self._is_dbus_thing("property")):
1313
if (value._dbus_name == property_name
1314
and value._dbus_interface == interface_name):
1315
return value.__get__(self)
1316
605
1317
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
1319
self.dbus_object_path, interface_name, property_name))
1320
1321
@classmethod
1322
def _get_all_interface_names(cls):
1323
"""Get a sequence of all interfaces supported by an object"""
1324
return (name for name in set(getattr(getattr(x, attr),
1325
"_dbus_interface", None)
1326
for x in (inspect.getmro(cls))
1327
for attr in dir(x))
1328
if name is not None)
1329
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
1331
in_signature="ss",
1332
out_signature="v")
612
1333
def Get(self, interface_name, property_name):
613
1334
"""Standard D-Bus property Get() method, see D-Bus standard.
614
1335
"""
615
1336
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
1337
if prop._dbus_access == "write":
617
1338
raise DBusPropertyAccessException(property_name)
618
1339
value = prop()
619
if not hasattr(value, u"variant_level"):
1340
if not hasattr(value, "variant_level"):
620
1341
return value
621
1342
return type(value)(value, variant_level=value.variant_level+1)
622
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1343
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
1345
def Set(self, interface_name, property_name, value):
625
1346
"""Standard D-Bus property Set() method, see D-Bus standard.
626
1347
"""
627
1348
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
1349
if prop._dbus_access == "read":
629
1350
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1351
if prop._dbus_get_args_options["byte_arrays"]:
631
1352
# The byte_arrays option is not supported yet on
632
1353
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
1354
if prop._dbus_signature != "ay":
1355
raise ValueError("Byte arrays not supported for non-"
1356
"'ay' signature {!r}"
1357
.format(prop._dbus_signature))
1358
value = dbus.ByteArray(b''.join(chr(byte)
1359
for byte in value))
637
1360
prop(value)
638
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1361
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
1363
in_signature="s",
1364
out_signature="a{sv}")
641
1365
def GetAll(self, interface_name):
642
1366
"""Standard D-Bus property GetAll() method, see D-Bus
643
1367
standard.
644
1368
645
1369
Note: Will not include properties with access="write".
646
1370
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1371
properties = {}
1372
for name, prop in self._get_all_dbus_things("property"):
649
1373
if (interface_name
650
1374
and interface_name != prop._dbus_interface):
651
1375
# Interface non-empty but did not match
652
1376
continue
653
1377
# Ignore write-only properties
654
if prop._dbus_access == u"write":
1378
if prop._dbus_access == "write":
655
1379
continue
656
1380
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1381
if not hasattr(value, "variant_level"):
1382
properties[name] = value
659
1383
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
663
1384
properties[name] = type(value)(
1385
value, variant_level=value.variant_level + 1)
1386
return dbus.Dictionary(properties, signature="sv")
1387
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1389
def PropertiesChanged(self, interface_name, changed_properties,
1390
invalidated_properties):
1391
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1392
standard.
1393
"""
1394
pass
1395
664
1396
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
1397
out_signature="s",
666
1398
path_keyword='object_path',
667
1399
connection_keyword='connection')
668
1400
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
1401
"""Overloading of standard D-Bus method.
1402
1403
Inserts property tags and interface annotation tags.
670
1404
"""
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1406
object_path,
1407
connection)
673
1408
try:
674
1409
document = xml.dom.minidom.parseString(xmlstring)
1410
675
1411
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
1412
e = document.createElement("property")
1413
e.setAttribute("name", name)
1414
e.setAttribute("type", prop._dbus_signature)
1415
e.setAttribute("access", prop._dbus_access)
680
1416
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
1417
1418
for if_tag in document.getElementsByTagName("interface"):
1419
# Add property tags
682
1420
for tag in (make_tag(document, name, prop)
683
1421
for name, prop
684
in self._get_all_dbus_properties()
1422
in self._get_all_dbus_things("property")
685
1423
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
1424
== if_tag.getAttribute("name")):
687
1425
if_tag.appendChild(tag)
1426
# Add annotation tags for properties
1427
for tag in if_tag.getElementsByTagName("property"):
1428
annots = dict()
1429
for name, prop in self._get_all_dbus_things(
1430
"property"):
1431
if (name == tag.getAttribute("name")
1432
and prop._dbus_interface
1433
== if_tag.getAttribute("name")):
1434
annots.update(getattr(
1435
prop, "_dbus_annotations", {}))
1436
for name, value in annots.items():
1437
ann_tag = document.createElement(
1438
"annotation")
1439
ann_tag.setAttribute("name", name)
1440
ann_tag.setAttribute("value", value)
1441
tag.appendChild(ann_tag)
688
1442
# Add the names to the return values for the
689
1443
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
1444
if (if_tag.getAttribute("name")
1445
== "org.freedesktop.DBus.Properties"):
1446
for cn in if_tag.getElementsByTagName("method"):
1447
if cn.getAttribute("name") == "Get":
1448
for arg in cn.getElementsByTagName("arg"):
1449
if (arg.getAttribute("direction")
1450
== "out"):
1451
arg.setAttribute("name", "value")
1452
elif cn.getAttribute("name") == "GetAll":
1453
for arg in cn.getElementsByTagName("arg"):
1454
if (arg.getAttribute("direction")
1455
== "out"):
1456
arg.setAttribute("name", "props")
1457
xmlstring = document.toxml("utf-8")
1458
document.unlink()
1459
except (AttributeError, xml.dom.DOMException,
1460
xml.parsers.expat.ExpatError) as error:
1461
logger.error("Failed to override Introspection method",
1462
exc_info=error)
1463
return xmlstring
1464
1465
1466
try:
1467
dbus.OBJECT_MANAGER_IFACE
1468
except AttributeError:
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1470
1471
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1473
"""A D-Bus object with an ObjectManager.
1474
1475
Classes inheriting from this exposes the standard
1476
GetManagedObjects call and the InterfacesAdded and
1477
InterfacesRemoved signals on the standard
1478
"org.freedesktop.DBus.ObjectManager" interface.
1479
1480
Note: No signals are sent automatically; they must be sent
1481
manually.
1482
"""
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1484
out_signature="a{oa{sa{sv}}}")
1485
def GetManagedObjects(self):
1486
"""This function must be overridden"""
1487
raise NotImplementedError()
1488
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1490
signature="oa{sa{sv}}")
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1492
pass
1493
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1495
def InterfacesRemoved(self, object_path, interfaces):
1496
pass
1497
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1502
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1504
1505
Override return argument name of GetManagedObjects to be
1506
"objpath_interfaces_and_properties"
1507
"""
1508
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1509
object_path,
1510
connection)
1511
try:
1512
document = xml.dom.minidom.parseString(xmlstring)
1513
1514
for if_tag in document.getElementsByTagName("interface"):
1515
# Fix argument name for the GetManagedObjects method
1516
if (if_tag.getAttribute("name")
1517
== dbus.OBJECT_MANAGER_IFACE):
1518
for cn in if_tag.getElementsByTagName("method"):
1519
if (cn.getAttribute("name")
1520
== "GetManagedObjects"):
1521
for arg in cn.getElementsByTagName("arg"):
1522
if (arg.getAttribute("direction")
1523
== "out"):
1524
arg.setAttribute(
1525
"name",
1526
"objpath_interfaces"
1527
"_and_properties")
1528
xmlstring = document.toxml("utf-8")
1529
document.unlink()
1530
except (AttributeError, xml.dom.DOMException,
1531
xml.parsers.expat.ExpatError) as error:
1532
logger.error("Failed to override Introspection method",
1533
exc_info=error)
1534
return xmlstring
1535
1536
1537
def datetime_to_dbus(dt, variant_level=0):
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1539
if dt is None:
1540
return dbus.String("", variant_level=variant_level)
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1542
1543
1544
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1545
"""A class decorator; applied to a subclass of
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1547
interface names according to the "alt_interface_names" mapping.
1548
Usage:
1549
1550
@alternate_dbus_interfaces({"org.example.Interface":
1551
"net.example.AlternateInterface"})
1552
class SampleDBusObject(dbus.service.Object):
1553
@dbus.service.method("org.example.Interface")
1554
def SampleDBusMethod():
1555
pass
1556
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1558
reachable via two interfaces: "org.example.Interface" and
1559
"net.example.AlternateInterface", the latter of which will have
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1561
"true", unless "deprecate" is passed with a False value.
1562
1563
This works for methods and signals, and also for D-Bus properties
1564
(from DBusObjectWithProperties) and interfaces (from the
1565
dbus_interface_annotations decorator).
1566
"""
1567
1568
def wrapper(cls):
1569
for orig_interface_name, alt_interface_name in (
1570
alt_interface_names.items()):
1571
attr = {}
1572
interface_names = set()
1573
# Go though all attributes of the class
1574
for attrname, attribute in inspect.getmembers(cls):
1575
# Ignore non-D-Bus attributes, and D-Bus attributes
1576
# with the wrong interface name
1577
if (not hasattr(attribute, "_dbus_interface")
1578
or not attribute._dbus_interface.startswith(
1579
orig_interface_name)):
1580
continue
1581
# Create an alternate D-Bus interface name based on
1582
# the current name
1583
alt_interface = attribute._dbus_interface.replace(
1584
orig_interface_name, alt_interface_name)
1585
interface_names.add(alt_interface)
1586
# Is this a D-Bus signal?
1587
if getattr(attribute, "_dbus_is_signal", False):
1588
# Extract the original non-method undecorated
1589
# function by black magic
1590
if sys.version_info.major == 2:
1591
nonmethod_func = (dict(
1592
zip(attribute.func_code.co_freevars,
1593
attribute.__closure__))
1594
["func"].cell_contents)
1595
else:
1596
nonmethod_func = (dict(
1597
zip(attribute.__code__.co_freevars,
1598
attribute.__closure__))
1599
["func"].cell_contents)
1600
# Create a new, but exactly alike, function
1601
# object, and decorate it to be a new D-Bus signal
1602
# with the alternate D-Bus interface name
1603
new_function = copy_function(nonmethod_func)
1604
new_function = (dbus.service.signal(
1605
alt_interface,
1606
attribute._dbus_signature)(new_function))
1607
# Copy annotations, if any
1608
try:
1609
new_function._dbus_annotations = dict(
1610
attribute._dbus_annotations)
1611
except AttributeError:
1612
pass
1613
1614
# Define a creator of a function to call both the
1615
# original and alternate functions, so both the
1616
# original and alternate signals gets sent when
1617
# the function is called
1618
def fixscope(func1, func2):
1619
"""This function is a scope container to pass
1620
func1 and func2 to the "call_both" function
1621
outside of its arguments"""
1622
1623
@functools.wraps(func2)
1624
def call_both(*args, **kwargs):
1625
"""This function will emit two D-Bus
1626
signals by calling func1 and func2"""
1627
func1(*args, **kwargs)
1628
func2(*args, **kwargs)
1629
# Make wrapper function look like a D-Bus
1630
# signal
1631
for name, attr in inspect.getmembers(func2):
1632
if name.startswith("_dbus_"):
1633
setattr(call_both, name, attr)
1634
1635
return call_both
1636
# Create the "call_both" function and add it to
1637
# the class
1638
attr[attrname] = fixscope(attribute, new_function)
1639
# Is this a D-Bus method?
1640
elif getattr(attribute, "_dbus_is_method", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus method
1643
# with the alternate D-Bus interface name. Add it
1644
# to the class.
1645
attr[attrname] = (
1646
dbus.service.method(
1647
alt_interface,
1648
attribute._dbus_in_signature,
1649
attribute._dbus_out_signature)
1650
(copy_function(attribute)))
1651
# Copy annotations, if any
1652
try:
1653
attr[attrname]._dbus_annotations = dict(
1654
attribute._dbus_annotations)
1655
except AttributeError:
1656
pass
1657
# Is this a D-Bus property?
1658
elif getattr(attribute, "_dbus_is_property", False):
1659
# Create a new, but exactly alike, function
1660
# object, and decorate it to be a new D-Bus
1661
# property with the alternate D-Bus interface
1662
# name. Add it to the class.
1663
attr[attrname] = (dbus_service_property(
1664
alt_interface, attribute._dbus_signature,
1665
attribute._dbus_access,
1666
attribute._dbus_get_args_options
1667
["byte_arrays"])
1668
(copy_function(attribute)))
1669
# Copy annotations, if any
1670
try:
1671
attr[attrname]._dbus_annotations = dict(
1672
attribute._dbus_annotations)
1673
except AttributeError:
1674
pass
1675
# Is this a D-Bus interface?
1676
elif getattr(attribute, "_dbus_is_interface", False):
1677
# Create a new, but exactly alike, function
1678
# object. Decorate it to be a new D-Bus interface
1679
# with the alternate D-Bus interface name. Add it
1680
# to the class.
1681
attr[attrname] = (
1682
dbus_interface_annotations(alt_interface)
1683
(copy_function(attribute)))
1684
if deprecate:
1685
# Deprecate all alternate interfaces
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1687
for interface_name in interface_names:
1688
1689
@dbus_interface_annotations(interface_name)
1690
def func(self):
1691
return {"org.freedesktop.DBus.Deprecated":
1692
"true"}
1693
# Find an unused name
1694
for aname in (iname.format(i)
1695
for i in itertools.count()):
1696
if aname not in attr:
1697
attr[aname] = func
1698
break
1699
if interface_names:
1700
# Replace the class with a new subclass of it with
1701
# methods, signals, etc. as created above.
1702
if sys.version_info.major == 2:
1703
cls = type(b"{}Alternate".format(cls.__name__),
1704
(cls, ), attr)
1705
else:
1706
cls = type("{}Alternate".format(cls.__name__),
1707
(cls, ), attr)
1708
return cls
1709
1710
return wrapper
1711
1712
1713
@alternate_dbus_interfaces({"se.recompile.Mandos":
1714
"se.bsnet.fukt.Mandos"})
712
1715
class ClientDBus(Client, DBusObjectWithProperties):
713
1716
"""A Client class using D-Bus
714
1717
715
1718
Attributes:
716
1719
dbus_object_path: dbus.ObjectPath
717
1720
bus: dbus.SystemBus()
718
1721
"""
719
1722
720
1723
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
722
1724
+ ("dbus_object_path", ))
1725
1726
_interface = "se.recompile.Mandos.Client"
1727
723
1728
# dbus.service.Object doesn't use super(), so we can't either.
724
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
1729
1730
def __init__(self, bus=None, *args, **kwargs):
727
1731
self.bus = bus
728
1732
Client.__init__(self, *args, **kwargs)
729
1733
# Only now, when this client is initialized, can it show up on
730
1734
# the D-Bus
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1735
client_object_name = str(self.name).translate(
1736
{ord("."): ord("_"),
1737
ord("-"): ord("_")})
1738
self.dbus_object_path = dbus.ObjectPath(
1739
"/clients/" + client_object_name)
736
1740
DBusObjectWithProperties.__init__(self, self.bus,
737
1741
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
1742
1743
def notifychangeproperty(transform_func, dbus_name,
1744
type_func=lambda x: x,
1745
variant_level=1,
1746
invalidate_only=False,
1747
_interface=_interface):
1748
""" Modify a variable so that it's a property which announces
1749
its changes to DBus.
1750
1751
transform_fun: Function that takes a value and a variant_level
1752
and transforms it to a D-Bus type.
1753
dbus_name: D-Bus name of the variable
1754
type_func: Function that transform the value before sending it
1755
to the D-Bus. Default: no transform
1756
variant_level: D-Bus variant level. Default: 1
1757
"""
1758
attrname = "_{}".format(dbus_name)
1759
1760
def setter(self, value):
1761
if hasattr(self, "dbus_object_path"):
1762
if (not hasattr(self, attrname) or
1763
type_func(getattr(self, attrname, None))
1764
!= type_func(value)):
1765
if invalidate_only:
1766
self.PropertiesChanged(
1767
_interface, dbus.Dictionary(),
1768
dbus.Array((dbus_name, )))
1769
else:
1770
dbus_value = transform_func(
1771
type_func(value),
1772
variant_level=variant_level)
1773
self.PropertyChanged(dbus.String(dbus_name),
1774
dbus_value)
1775
self.PropertiesChanged(
1776
_interface,
1777
dbus.Dictionary({dbus.String(dbus_name):
1778
dbus_value}),
1779
dbus.Array())
1780
setattr(self, attrname, value)
1781
1782
return property(lambda self: getattr(self, attrname), setter)
1783
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1786
"ApprovalPending",
1787
type_func=bool)
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1790
"LastEnabled")
1791
checker = notifychangeproperty(
1792
dbus.Boolean, "CheckerRunning",
1793
type_func=lambda checker: checker is not None)
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1795
"LastCheckedOK")
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1797
"LastCheckerStatus")
1798
last_approval_request = notifychangeproperty(
1799
datetime_to_dbus, "LastApprovalRequest")
1800
approved_by_default = notifychangeproperty(dbus.Boolean,
1801
"ApprovedByDefault")
1802
approval_delay = notifychangeproperty(
1803
dbus.UInt64, "ApprovalDelay",
1804
type_func=lambda td: td.total_seconds() * 1000)
1805
approval_duration = notifychangeproperty(
1806
dbus.UInt64, "ApprovalDuration",
1807
type_func=lambda td: td.total_seconds() * 1000)
1808
host = notifychangeproperty(dbus.String, "Host")
1809
timeout = notifychangeproperty(
1810
dbus.UInt64, "Timeout",
1811
type_func=lambda td: td.total_seconds() * 1000)
1812
extended_timeout = notifychangeproperty(
1813
dbus.UInt64, "ExtendedTimeout",
1814
type_func=lambda td: td.total_seconds() * 1000)
1815
interval = notifychangeproperty(
1816
dbus.UInt64, "Interval",
1817
type_func=lambda td: td.total_seconds() * 1000)
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1820
invalidate_only=True)
1821
1822
del notifychangeproperty
1823
783
1824
def __del__(self, *args, **kwargs):
784
1825
try:
785
1826
self.remove_from_connection()
786
1827
except LookupError:
787
1828
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1829
if hasattr(DBusObjectWithProperties, "__del__"):
789
1830
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1831
Client.__del__(self, *args, **kwargs)
791
792
def checker_callback(self, pid, condition, command,
793
*args, **kwargs):
794
self.checker_callback_tag = None
795
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
if os.WIFEXITED(condition):
800
exitstatus = os.WEXITSTATUS(condition)
1832
1833
def checker_callback(self, source, condition,
1834
connection, command, *args, **kwargs):
1835
ret = Client.checker_callback(self, source, condition,
1836
connection, command, *args,
1837
**kwargs)
1838
exitstatus = self.last_checker_status
1839
if exitstatus >= 0:
801
1840
# Emit D-Bus signal
802
1841
self.CheckerCompleted(dbus.Int16(exitstatus),
803
dbus.Int64(condition),
1842
# This is specific to GNU libC
1843
dbus.Int64(exitstatus << 8),
804
1844
dbus.String(command))
805
1845
else:
806
1846
# Emit D-Bus signal
807
1847
self.CheckerCompleted(dbus.Int16(-1),
808
dbus.Int64(condition),
1848
dbus.Int64(
1849
# This is specific to GNU libC
1850
(exitstatus << 8)
1851
| self.last_checker_signal),
809
1852
dbus.String(command))
810
811
return Client.checker_callback(self, pid, condition, command,
812
*args, **kwargs)
813
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
1853
return ret
1854
832
1855
def start_checker(self, *args, **kwargs):
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1856
old_checker_pid = getattr(self.checker, "pid", None)
838
1857
r = Client.start_checker(self, *args, **kwargs)
839
1858
# Only if new checker process was started
840
1859
if (self.checker is not None
841
1860
and old_checker_pid != self.checker.pid):
842
1861
# Emit D-Bus signal
843
1862
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
return r
848
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
1863
return r
857
1864
858
1865
def _reset_approved(self):
859
self._approved = None
1866
self.approved = None
860
1867
return False
861
1868
862
1869
def approve(self, value=True):
1870
self.approved = value
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1872
* 1000), self._reset_approved)
863
1873
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
870
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
872
873
## Signals
874
1874
1875
# D-Bus methods, signals & properties
1876
1877
# Interfaces
1878
1879
# Signals
1880
875
1881
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1882
@dbus.service.signal(_interface, signature="nxs")
877
1883
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1884
"D-Bus signal"
879
1885
pass
880
1886
881
1887
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1888
@dbus.service.signal(_interface, signature="s")
883
1889
def CheckerStarted(self, command):
884
1890
"D-Bus signal"
885
1891
pass
886
1892
887
1893
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1895
@dbus.service.signal(_interface, signature="sv")
889
1896
def PropertyChanged(self, property, value):
890
1897
"D-Bus signal"
891
1898
pass
892
1899
893
1900
# GotSecret - signal
894
1901
@dbus.service.signal(_interface)
895
1902
def GotSecret(self):
898
1905
server to mandos-client
899
1906
"""
900
1907
pass
901
1908
902
1909
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1910
@dbus.service.signal(_interface, signature="s")
904
1911
def Rejected(self, reason):
905
1912
"D-Bus signal"
906
1913
pass
907
1914
908
1915
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1916
@dbus.service.signal(_interface, signature="tb")
910
1917
def NeedApproval(self, timeout, default):
911
1918
"D-Bus signal"
912
1919
return self.need_approval()
913
914
## Methods
915
1920
1921
# Methods
1922
916
1923
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1924
@dbus.service.method(_interface, in_signature="b")
918
1925
def Approve(self, value):
919
1926
self.approve(value)
920
1927
921
1928
# CheckedOK - method
922
1929
@dbus.service.method(_interface)
923
1930
def CheckedOK(self):
924
return self.checked_ok()
925
1931
self.checked_ok()
1932
926
1933
# Enable - method
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
927
1935
@dbus.service.method(_interface)
928
1936
def Enable(self):
929
1937
"D-Bus method"
930
1938
self.enable()
931
1939
932
1940
# StartChecker - method
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
933
1942
@dbus.service.method(_interface)
934
1943
def StartChecker(self):
935
1944
"D-Bus method"
936
1945
self.start_checker()
937
1946
938
1947
# Disable - method
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
939
1949
@dbus.service.method(_interface)
940
1950
def Disable(self):
941
1951
"D-Bus method"
942
1952
self.disable()
943
1953
944
1954
# StopChecker - method
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
945
1956
@dbus.service.method(_interface)
946
1957
def StopChecker(self):
947
1958
self.stop_checker()
948
949
## Properties
950
1959
1960
# Properties
1961
951
1962
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1963
@dbus_service_property(_interface, signature="b", access="read")
953
1964
def ApprovalPending_dbus_property(self):
954
1965
return dbus.Boolean(bool(self.approvals_pending))
955
1966
956
1967
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1968
@dbus_service_property(_interface,
1969
signature="b",
1970
access="readwrite")
959
1971
def ApprovedByDefault_dbus_property(self, value=None):
960
1972
if value is None: # get
961
1973
return dbus.Boolean(self.approved_by_default)
962
1974
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1975
967
1976
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1977
@dbus_service_property(_interface,
1978
signature="t",
1979
access="readwrite")
970
1980
def ApprovalDelay_dbus_property(self, value=None):
971
1981
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1983
* 1000)
973
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1985
978
1986
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1987
@dbus_service_property(_interface,
1988
signature="t",
1989
access="readwrite")
981
1990
def ApprovalDuration_dbus_property(self, value=None):
982
1991
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1993
* 1000)
985
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1995
990
1996
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1997
@dbus_annotations(
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1999
@dbus_service_property(_interface, signature="s", access="read")
992
2000
def Name_dbus_property(self):
993
2001
return dbus.String(self.name)
994
2002
995
2003
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
2004
@dbus_annotations(
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2006
@dbus_service_property(_interface, signature="s", access="read")
997
2007
def Fingerprint_dbus_property(self):
998
2008
return dbus.String(self.fingerprint)
999
2009
1000
2010
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
2011
@dbus_service_property(_interface,
2012
signature="s",
2013
access="readwrite")
1003
2014
def Host_dbus_property(self, value=None):
1004
2015
if value is None: # get
1005
2016
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1010
2017
self.host = str(value)
2018
1011
2019
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
2020
@dbus_annotations(
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2022
@dbus_service_property(_interface, signature="s", access="read")
1013
2023
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1015
2024
return datetime_to_dbus(self.created)
2025
1016
2026
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
2027
@dbus_service_property(_interface, signature="s", access="read")
1018
2028
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
2029
return datetime_to_dbus(self.last_enabled)
2030
1023
2031
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
2032
@dbus_service_property(_interface,
2033
signature="b",
2034
access="readwrite")
1026
2035
def Enabled_dbus_property(self, value=None):
1027
2036
if value is None: # get
1028
2037
return dbus.Boolean(self.enabled)
1030
2039
self.enable()
1031
2040
else:
1032
2041
self.disable()
1033
2042
1034
2043
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
2044
@dbus_service_property(_interface,
2045
signature="s",
2046
access="readwrite")
1037
2047
def LastCheckedOK_dbus_property(self, value=None):
1038
2048
if value is not None:
1039
2049
self.checked_ok()
1040
2050
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1045
2051
return datetime_to_dbus(self.last_checked_ok)
2052
2053
# LastCheckerStatus - property
2054
@dbus_service_property(_interface, signature="n", access="read")
2055
def LastCheckerStatus_dbus_property(self):
2056
return dbus.Int16(self.last_checker_status)
2057
2058
# Expires - property
2059
@dbus_service_property(_interface, signature="s", access="read")
2060
def Expires_dbus_property(self):
2061
return datetime_to_dbus(self.expires)
2062
1046
2063
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
2064
@dbus_service_property(_interface, signature="s", access="read")
1048
2065
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1054
2066
return datetime_to_dbus(self.last_approval_request)
2067
1055
2068
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
2069
@dbus_service_property(_interface,
2070
signature="t",
2071
access="readwrite")
1058
2072
def Timeout_dbus_property(self, value=None):
1059
2073
if value is None: # get
1060
return dbus.UInt64(self.timeout_milliseconds())
2074
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2075
old_timeout = self.timeout
1061
2076
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1082
2077
# Reschedule disabling
2078
if self.enabled:
2079
now = datetime.datetime.utcnow()
2080
self.expires += self.timeout - old_timeout
2081
if self.expires <= now:
2082
# The timeout has passed
2083
self.disable()
2084
else:
2085
if (getattr(self, "disable_initiator_tag", None)
2086
is None):
2087
return
2088
GLib.source_remove(self.disable_initiator_tag)
2089
self.disable_initiator_tag = GLib.timeout_add(
2090
int((self.expires - now).total_seconds() * 1000),
2091
self.disable)
2092
2093
# ExtendedTimeout - property
2094
@dbus_service_property(_interface,
2095
signature="t",
2096
access="readwrite")
2097
def ExtendedTimeout_dbus_property(self, value=None):
2098
if value is None: # get
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
2100
* 1000)
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2102
1083
2103
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
2104
@dbus_service_property(_interface,
2105
signature="t",
2106
access="readwrite")
1086
2107
def Interval_dbus_property(self, value=None):
1087
2108
if value is None: # get
1088
return dbus.UInt64(self.interval_milliseconds())
2109
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
2110
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
2111
if getattr(self, "checker_initiator_tag", None) is None:
1094
2112
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
2113
if self.enabled:
2114
# Reschedule checker run
2115
GLib.source_remove(self.checker_initiator_tag)
2116
self.checker_initiator_tag = GLib.timeout_add(
2117
value, self.start_checker)
2118
self.start_checker() # Start one now, too
1100
2119
1101
2120
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
2121
@dbus_service_property(_interface,
2122
signature="s",
2123
access="readwrite")
1104
2124
def Checker_dbus_property(self, value=None):
1105
2125
if value is None: # get
1106
2126
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1112
2127
self.checker_command = str(value)
2128
1113
2129
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
2130
@dbus_service_property(_interface,
2131
signature="b",
2132
access="readwrite")
1116
2133
def CheckerRunning_dbus_property(self, value=None):
1117
2134
if value is None: # get
1118
2135
return dbus.Boolean(self.checker is not None)
1120
2137
self.start_checker()
1121
2138
else:
1122
2139
self.stop_checker()
1123
2140
1124
2141
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
2142
@dbus_annotations(
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2144
"org.freedesktop.DBus.Deprecated": "true"})
2145
@dbus_service_property(_interface, signature="o", access="read")
1126
2146
def ObjectPath_dbus_property(self):
1127
return self.dbus_object_path # is already a dbus.ObjectPath
1128
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2148
1129
2149
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
2150
@dbus_annotations(
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2152
"invalidates"})
2153
@dbus_service_property(_interface,
2154
signature="ay",
2155
access="write",
2156
byte_arrays=True)
1132
2157
def Secret_dbus_property(self, value):
1133
self.secret = str(value)
1134
2158
self.secret = bytes(value)
2159
1135
2160
del _interface
1136
2161
1137
2162
1140
2165
self._pipe = child_pipe
1141
2166
self._pipe.send(('init', fpr, address))
1142
2167
if not self._pipe.recv():
1143
raise KeyError()
2168
raise KeyError(fpr)
1144
2169
1145
2170
def __getattribute__(self, name):
1146
if(name == '_pipe'):
2171
if name == '_pipe':
1147
2172
return super(ProxyClient, self).__getattribute__(name)
1148
2173
self._pipe.send(('getattr', name))
1149
2174
data = self._pipe.recv()
1150
2175
if data[0] == 'data':
1151
2176
return data[1]
1152
2177
if data[0] == 'function':
2178
1153
2179
def func(*args, **kwargs):
1154
2180
self._pipe.send(('funcall', name, args, kwargs))
1155
2181
return self._pipe.recv()[1]
2182
1156
2183
return func
1157
2184
1158
2185
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
2186
if name == '_pipe':
1160
2187
return super(ProxyClient, self).__setattr__(name, value)
1161
2188
self._pipe.send(('setattr', name, value))
1162
2189
1163
2190
1164
2191
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
2192
"""A class to handle client connections.
1166
2193
1167
2194
Instantiated once for each connection to handle it.
1168
2195
Note: This will run in its own forked process."""
1169
2196
1170
2197
def handle(self):
1171
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
2199
logger.info("TCP connection from: %s",
2200
str(self.client_address))
2201
logger.debug("Pipe FD: %d",
1175
2202
self.server.child_pipe.fileno())
1176
2203
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1182
# Note: gnutls.connection.X509Credentials is really a
1183
# generic GnuTLS certificate credentials object so long as
1184
# no X.509 keys are added to it. Therefore, we can use it
1185
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
2204
session = gnutls.ClientSession(self.request)
2205
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
# "+DHE-DSS"))
1191
2210
# Use a fallback default, since this MUST be set.
1192
2211
priority = self.server.gnutls_priority
1193
2212
if priority is None:
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
2213
priority = "NORMAL"
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2216
None)
1198
2217
1199
2218
# Start communication using the Mandos protocol
1200
2219
# Get protocol number
1201
2220
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
2221
logger.debug("Protocol version: %r", line)
1203
2222
try:
1204
2223
if int(line.strip().split()[0]) > 1:
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
2224
raise RuntimeError(line)
2225
except (ValueError, IndexError, RuntimeError) as error:
2226
logger.error("Unknown protocol version: %s", error)
1208
2227
return
1209
2228
1210
2229
# Start GnuTLS connection
1211
2230
try:
1212
2231
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
2232
except gnutls.Error as error:
2233
logger.warning("Handshake failed: %s", error)
1215
2234
# Do not run session.bye() here: the session is not
1216
2235
# established. Just abandon the request.
1217
2236
return
1218
logger.debug(u"Handshake succeeded")
2237
logger.debug("Handshake succeeded")
1219
2238
1220
2239
approval_required = False
1221
2240
try:
1222
2241
try:
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
2242
fpr = self.fingerprint(
2243
self.peer_certificate(session))
2244
except (TypeError, gnutls.Error) as error:
2245
logger.warning("Bad certificate: %s", error)
1227
2246
return
1228
logger.debug(u"Fingerprint: %s", fpr)
2247
logger.debug("Fingerprint: %s", fpr)
1229
2248
1230
2249
try:
1231
2250
client = ProxyClient(child_pipe, fpr,
1232
2251
self.client_address)
1233
2252
except KeyError:
1234
2253
return
1235
2254
1236
2255
if client.approval_delay:
1237
2256
delay = client.approval_delay
1238
2257
client.approvals_pending += 1
1239
2258
approval_required = True
1240
2259
1241
2260
while True:
1242
2261
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
2262
logger.info("Client %s is disabled",
2263
client.name)
1245
2264
if self.server.use_dbus:
1246
2265
# Emit D-Bus signal
1247
client.Rejected("Disabled")
2266
client.Rejected("Disabled")
1248
2267
return
1249
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
2268
2269
if client.approved or not client.approval_delay:
2270
# We are approved or approval is disabled
1252
2271
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
2272
elif client.approved is None:
2273
logger.info("Client %s needs approval",
1255
2274
client.name)
1256
2275
if self.server.use_dbus:
1257
2276
# Emit D-Bus signal
1258
2277
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
2278
client.approval_delay.total_seconds()
2279
* 1000, client.approved_by_default)
1261
2280
else:
1262
logger.warning(u"Client %s was not approved",
2281
logger.warning("Client %s was not approved",
1263
2282
client.name)
1264
2283
if self.server.use_dbus:
1265
2284
# Emit D-Bus signal
1266
2285
client.Rejected("Denied")
1267
2286
return
1268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
2287
2288
# wait until timeout or approved
1271
2289
time = datetime.datetime.now()
1272
2290
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2291
client.changedstate.wait(delay.total_seconds())
1274
2292
client.changedstate.release()
1275
2293
time2 = datetime.datetime.now()
1276
2294
if (time2 - time) >= delay:
1286
2304
break
1287
2305
else:
1288
2306
delay -= time2 - time
1289
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
2307
2308
try:
2309
session.send(client.secret)
2310
except gnutls.Error as error:
2311
logger.warning("gnutls send failed",
2312
exc_info=error)
2313
return
2314
2315
logger.info("Sending secret to %s", client.name)
2316
# bump the timeout using extended_timeout
2317
client.bump_timeout(client.extended_timeout)
1305
2318
if self.server.use_dbus:
1306
2319
# Emit D-Bus signal
1307
2320
client.GotSecret()
1308
2321
1309
2322
finally:
1310
2323
if approval_required:
1311
2324
client.approvals_pending -= 1
1312
2325
try:
1313
2326
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1316
2327
except gnutls.Error as error:
2328
logger.warning("GnuTLS bye failed",
2329
exc_info=error)
2330
1317
2331
@staticmethod
1318
2332
def peer_certificate(session):
1319
2333
"Return the peer's OpenPGP certificate as a bytestring"
1320
2334
# If not an OpenPGP certificate...
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1323
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
# ...do the normal thing
1325
return session.peer_certificate
2335
if (gnutls.certificate_type_get(session._c_object)
2336
!= gnutls.CRT_OPENPGP):
2337
# ...return invalid data
2338
return b""
1326
2339
list_size = ctypes.c_uint(1)
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
2340
cert_list = (gnutls.certificate_get_peers
1329
2341
(session._c_object, ctypes.byref(list_size)))
1330
2342
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2343
raise gnutls.Error("error getting peer certificate")
1333
2344
if list_size.value == 0:
1334
2345
return None
1335
2346
cert = cert_list[0]
1336
2347
return ctypes.string_at(cert.data, cert.size)
1337
2348
1338
2349
@staticmethod
1339
2350
def fingerprint(openpgp):
1340
2351
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1341
2352
# New GnuTLS "datum" with the OpenPGP public key
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
2353
datum = gnutls.datum_t(
2354
ctypes.cast(ctypes.c_char_p(openpgp),
2355
ctypes.POINTER(ctypes.c_ubyte)),
2356
ctypes.c_uint(len(openpgp)))
1347
2357
# New empty GnuTLS certificate
1348
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2358
crt = gnutls.openpgp_crt_t()
2359
gnutls.openpgp_crt_init(ctypes.byref(crt))
1351
2360
# Import the OpenPGP public key into the certificate
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
2361
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2362
gnutls.OPENPGP_FMT_RAW)
1356
2363
# Verify the self signature in the key
1357
2364
crtverify = ctypes.c_uint()
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2365
gnutls.openpgp_crt_verify_self(crt, 0,
2366
ctypes.byref(crtverify))
1361
2367
if crtverify.value != 0:
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2368
gnutls.openpgp_crt_deinit(crt)
2369
raise gnutls.CertificateSecurityError("Verify failed")
1365
2370
# New buffer for the fingerprint
1366
2371
buf = ctypes.create_string_buffer(20)
1367
2372
buf_len = ctypes.c_size_t()
1368
2373
# Get the fingerprint from the certificate into the buffer
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1372
2376
# Deinit the certificate
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
gnutls.openpgp_crt_deinit(crt)
1374
2378
# Convert the buffer to a Python bytestring
1375
2379
fpr = ctypes.string_at(buf, buf_len.value)
1376
2380
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2381
hex_fpr = binascii.hexlify(fpr).upper()
1378
2382
return hex_fpr
1379
2383
1380
2384
1381
2385
class MultiprocessingMixIn(object):
1382
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2387
1383
2388
def sub_process_main(self, request, address):
1384
2389
try:
1385
2390
self.finish_request(request, address)
1386
except:
2391
except Exception:
1387
2392
self.handle_error(request, address)
1388
2393
self.close_request(request)
1389
2394
1390
2395
def process_request(self, request, address):
1391
2396
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
2399
proc.start()
2400
return proc
2401
1394
2402
1395
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
2404
""" adds a pipe to the MixIn """
2405
1397
2406
def process_request(self, request, client_address):
1398
2407
"""Overrides and wraps the original process_request().
1399
2408
1400
2409
This function creates a new pipe in self.pipe
1401
2410
"""
1402
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
2412
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2413
proc = MultiprocessingMixIn.process_request(self, request,
2414
client_address)
1406
2415
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
2416
self.add_pipe(parent_pipe, proc)
1408
2417
1409
def add_pipe(self, parent_pipe):
2418
def add_pipe(self, parent_pipe, proc):
1410
2419
"""Dummy function; override as necessary"""
1411
pass
2420
raise NotImplementedError()
2421
1412
2422
1413
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
2424
socketserver.TCPServer, object):
1415
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1416
2426
1417
2427
Attributes:
1418
2428
enabled: Boolean; whether this server is activated yet
1419
2429
interface: None or a network interface name (string)
1420
2430
use_ipv6: Boolean; to use IPv6 or not
1421
2431
"""
2432
1422
2433
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
2434
interface=None,
2435
use_ipv6=True,
2436
socketfd=None):
2437
"""If socketfd is set, use that file descriptor instead of
2438
creating a new one with socket.socket().
2439
"""
1424
2440
self.interface = interface
1425
2441
if use_ipv6:
1426
2442
self.address_family = socket.AF_INET6
2443
if socketfd is not None:
2444
# Save the file descriptor
2445
self.socketfd = socketfd
2446
# Save the original socket.socket() function
2447
self.socket_socket = socket.socket
2448
2449
# To implement --socket, we monkey patch socket.socket.
2450
#
2451
# (When socketserver.TCPServer is a new-style class, we
2452
# could make self.socket into a property instead of monkey
2453
# patching socket.socket.)
2454
#
2455
# Create a one-time-only replacement for socket.socket()
2456
@functools.wraps(socket.socket)
2457
def socket_wrapper(*args, **kwargs):
2458
# Restore original function so subsequent calls are
2459
# not affected.
2460
socket.socket = self.socket_socket
2461
del self.socket_socket
2462
# This time only, return a new socket object from the
2463
# saved file descriptor.
2464
return socket.fromfd(self.socketfd, *args, **kwargs)
2465
# Replace socket.socket() function with wrapper
2466
socket.socket = socket_wrapper
2467
# The socketserver.TCPServer.__init__ will call
2468
# socket.socket(), which might be our replacement,
2469
# socket_wrapper(), if socketfd was set.
1427
2470
socketserver.TCPServer.__init__(self, server_address,
1428
2471
RequestHandlerClass)
2472
1429
2473
def server_bind(self):
1430
2474
"""This overrides the normal server_bind() function
1431
2475
to bind to an interface if one was specified, and also NOT to
1432
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
1433
2478
if self.interface is not None:
1434
2479
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1437
self.interface)
1438
else:
1439
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1453
else:
1454
raise
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
1455
2501
# Only bind(2) the socket if we really need to.
1456
2502
if self.server_address[0] or self.server_address[1]:
1457
2503
if not self.server_address[0]:
1458
2504
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
2505
any_address = "::" # in6addr_any
1460
2506
else:
1461
any_address = socket.INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
1462
2508
self.server_address = (any_address,
1463
2509
self.server_address[1])
1464
2510
elif not self.server_address[1]:
1465
self.server_address = (self.server_address[0],
1466
0)
2511
self.server_address = (self.server_address[0], 0)
1467
2512
# if self.interface:
1468
2513
# self.server_address = (self.server_address[0],
1469
2514
# 0, # port
1475
2520
1476
2521
class MandosServer(IPv6_TCPServer):
1477
2522
"""Mandos server.
1478
2523
1479
2524
Attributes:
1480
2525
clients: set of Client objects
1481
2526
gnutls_priority GnuTLS priority string
1482
2527
use_dbus: Boolean; to emit D-Bus signals or not
1483
1484
Assumes a gobject.MainLoop event loop.
2528
2529
Assumes a GLib.MainLoop event loop.
1485
2530
"""
2531
1486
2532
def __init__(self, server_address, RequestHandlerClass,
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2533
interface=None,
2534
use_ipv6=True,
2535
clients=None,
2536
gnutls_priority=None,
2537
use_dbus=True,
2538
socketfd=None):
1489
2539
self.enabled = False
1490
2540
self.clients = clients
1491
2541
if self.clients is None:
1492
self.clients = set()
2542
self.clients = {}
1493
2543
self.use_dbus = use_dbus
1494
2544
self.gnutls_priority = gnutls_priority
1495
2545
IPv6_TCPServer.__init__(self, server_address,
1496
2546
RequestHandlerClass,
1497
interface = interface,
1498
use_ipv6 = use_ipv6)
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
1499
2551
def server_activate(self):
1500
2552
if self.enabled:
1501
2553
return socketserver.TCPServer.server_activate(self)
2554
1502
2555
def enable(self):
1503
2556
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2557
2558
def add_pipe(self, parent_pipe, proc):
1505
2559
# Call "handle_ipc" for both data and EOF events
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
2560
GLib.io_add_watch(
2561
parent_pipe.fileno(),
2562
GLib.IO_IN | GLib.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2567
def handle_ipc(self, source, condition,
2568
parent_pipe=None,
2569
proc=None,
1512
2570
client_object=None):
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2571
# error, or the other end of multiprocessing.Pipe has closed
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2573
# Wait for other process to exit
2574
proc.join()
1529
2575
return False
1530
2576
1531
2577
# Read a request from the child
1532
2578
request = parent_pipe.recv()
1533
2579
command = request[0]
1534
2580
1535
2581
if command == 'init':
1536
fpr = request[1]
2582
fpr = request[1].decode("ascii")
1537
2583
address = request[2]
1538
1539
for c in self.clients:
2584
2585
for c in self.clients.values():
1540
2586
if c.fingerprint == fpr:
1541
2587
client = c
1542
2588
break
1543
2589
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2590
logger.info("Client not found for fingerprint: %s, ad"
2591
"dress: %s", fpr, address)
1546
2592
if self.use_dbus:
1547
2593
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2594
mandos_dbus_service.ClientNotFound(fpr,
2595
address[0])
1549
2596
parent_pipe.send(False)
1550
2597
return False
1551
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2598
2599
GLib.io_add_watch(
2600
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2602
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
1557
2606
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2607
# remove the old hook in favor of the new above hook on
2608
# same fileno
1559
2609
return False
1560
2610
if command == 'funcall':
1561
2611
funcname = request[1]
1562
2612
args = request[2]
1563
2613
kwargs = request[3]
1564
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2614
2615
parent_pipe.send(('data', getattr(client_object,
2616
funcname)(*args,
2617
**kwargs)))
1566
2618
1567
2619
if command == 'getattr':
1568
2620
attrname = request[1]
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2623
parent_pipe.send(('function', ))
1571
2624
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1573
2625
parent_pipe.send((
2626
'data', client_object.__getattribute__(attrname)))
2627
1574
2628
if command == 'setattr':
1575
2629
attrname = request[1]
1576
2630
value = request[2]
1579
2633
return True
1580
2634
1581
2635
2636
def rfc3339_duration_to_delta(duration):
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2638
2639
>>> rfc3339_duration_to_delta("P7D")
2640
datetime.timedelta(7)
2641
>>> rfc3339_duration_to_delta("PT60S")
2642
datetime.timedelta(0, 60)
2643
>>> rfc3339_duration_to_delta("PT60M")
2644
datetime.timedelta(0, 3600)
2645
>>> rfc3339_duration_to_delta("PT24H")
2646
datetime.timedelta(1)
2647
>>> rfc3339_duration_to_delta("P1W")
2648
datetime.timedelta(7)
2649
>>> rfc3339_duration_to_delta("PT5M30S")
2650
datetime.timedelta(0, 330)
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2652
datetime.timedelta(1, 200)
2653
"""
2654
2655
# Parsing an RFC 3339 duration with regular expressions is not
2656
# possible - there would have to be multiple places for the same
2657
# values, like seconds. The current code, while more esoteric, is
2658
# cleaner without depending on a parsing library. If Python had a
2659
# built-in library for parsing we would use it, but we'd like to
2660
# avoid excessive use of external libraries.
2661
2662
# New type for defining tokens, syntax, and semantics all-in-one
2663
Token = collections.namedtuple("Token", (
2664
"regexp", # To match token; if "value" is not None, must have
2665
# a "group" containing digits
2666
"value", # datetime.timedelta or None
2667
"followers")) # Tokens valid after this token
2668
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2669
# the "duration" ABNF definition in RFC 3339, Appendix A.
2670
token_end = Token(re.compile(r"$"), None, frozenset())
2671
token_second = Token(re.compile(r"(\d+)S"),
2672
datetime.timedelta(seconds=1),
2673
frozenset((token_end, )))
2674
token_minute = Token(re.compile(r"(\d+)M"),
2675
datetime.timedelta(minutes=1),
2676
frozenset((token_second, token_end)))
2677
token_hour = Token(re.compile(r"(\d+)H"),
2678
datetime.timedelta(hours=1),
2679
frozenset((token_minute, token_end)))
2680
token_time = Token(re.compile(r"T"),
2681
None,
2682
frozenset((token_hour, token_minute,
2683
token_second)))
2684
token_day = Token(re.compile(r"(\d+)D"),
2685
datetime.timedelta(days=1),
2686
frozenset((token_time, token_end)))
2687
token_month = Token(re.compile(r"(\d+)M"),
2688
datetime.timedelta(weeks=4),
2689
frozenset((token_day, token_end)))
2690
token_year = Token(re.compile(r"(\d+)Y"),
2691
datetime.timedelta(weeks=52),
2692
frozenset((token_month, token_end)))
2693
token_week = Token(re.compile(r"(\d+)W"),
2694
datetime.timedelta(weeks=1),
2695
frozenset((token_end, )))
2696
token_duration = Token(re.compile(r"P"), None,
2697
frozenset((token_year, token_month,
2698
token_day, token_time,
2699
token_week)))
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2703
found_token = None
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2708
# Loop until end token is found
2709
while found_token is not token_end:
2710
# Search for any currently valid tokens
2711
for token in followers:
2712
match = token.regexp.match(s)
2713
if match is not None:
2714
# Token found
2715
if token.value is not None:
2716
# Value found, parse digits
2717
factor = int(match.group(1), 10)
2718
# Add to value so far
2719
value += factor * token.value
2720
# Strip token from string
2721
s = token.regexp.sub("", s, 1)
2722
# Go to found token
2723
found_token = token
2724
# Set valid next tokens
2725
followers = found_token.followers
2726
break
2727
else:
2728
# No currently valid tokens were found
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2730
.format(duration))
2731
# End token found
2732
return value
2733
2734
1582
2735
def string_to_delta(interval):
1583
2736
"""Parse a string and return a datetime.timedelta
1584
1585
>>> string_to_delta(u'7d')
2737
2738
>>> string_to_delta('7d')
1586
2739
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2740
>>> string_to_delta('60s')
1588
2741
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2742
>>> string_to_delta('60m')
1590
2743
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2744
>>> string_to_delta('24h')
1592
2745
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2746
>>> string_to_delta('1w')
1594
2747
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2748
>>> string_to_delta('5m 30s')
1596
2749
datetime.timedelta(0, 330)
1597
2750
"""
2751
2752
try:
2753
return rfc3339_duration_to_delta(interval)
2754
except ValueError:
2755
pass
2756
1598
2757
timevalue = datetime.timedelta(0)
1599
2758
for s in interval.split():
1600
2759
try:
1601
suffix = unicode(s[-1])
2760
suffix = s[-1]
1602
2761
value = int(s[:-1])
1603
if suffix == u"d":
2762
if suffix == "d":
1604
2763
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2764
elif suffix == "s":
1606
2765
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2766
elif suffix == "m":
1608
2767
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2768
elif suffix == "h":
1610
2769
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2770
elif suffix == "w":
1612
2771
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2772
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2773
raise ValueError("Unknown suffix {!r}".format(suffix))
2774
except IndexError as e:
2775
raise ValueError(*(e.args))
1617
2776
timevalue += delta
1618
2777
return timevalue
1619
2778
1620
2779
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
def daemon(nochdir = False, noclose = False):
2780
def daemon(nochdir=False, noclose=False):
1646
2781
"""See daemon(3). Standard BSD Unix function.
1647
2782
1648
2783
This should really exist as os.daemon, but it doesn't (yet)."""
1649
2784
if os.fork():
1650
2785
sys.exit()
1651
2786
os.setsid()
1652
2787
if not nochdir:
1653
os.chdir(u"/")
2788
os.chdir("/")
1654
2789
if os.fork():
1655
2790
sys.exit()
1656
2791
if not noclose:
1657
2792
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2793
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2794
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2795
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2796
"{} not a character device"
2797
.format(os.devnull))
1663
2798
os.dup2(null, sys.stdin.fileno())
1664
2799
os.dup2(null, sys.stdout.fileno())
1665
2800
os.dup2(null, sys.stderr.fileno())
1668
2803
1669
2804
1670
2805
def main():
1671
2806
1672
2807
##################################################################
1673
2808
# Parsing of options, both command line and config file
1674
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
1703
2809
2810
parser = argparse.ArgumentParser()
2811
parser.add_argument("-v", "--version", action="version",
2812
version="%(prog)s {}".format(version),
2813
help="show version number and exit")
2814
parser.add_argument("-i", "--interface", metavar="IF",
2815
help="Bind to interface IF")
2816
parser.add_argument("-a", "--address",
2817
help="Address to listen for requests on")
2818
parser.add_argument("-p", "--port", type=int,
2819
help="Port number to receive requests on")
2820
parser.add_argument("--check", action="store_true",
2821
help="Run self-test")
2822
parser.add_argument("--debug", action="store_true",
2823
help="Debug mode; run in foreground and log"
2824
" to terminal", default=None)
2825
parser.add_argument("--debuglevel", metavar="LEVEL",
2826
help="Debug level for stdout output")
2827
parser.add_argument("--priority", help="GnuTLS"
2828
" priority string (see GnuTLS documentation)")
2829
parser.add_argument("--servicename",
2830
metavar="NAME", help="Zeroconf service name")
2831
parser.add_argument("--configdir",
2832
default="/etc/mandos", metavar="DIR",
2833
help="Directory to search for configuration"
2834
" files")
2835
parser.add_argument("--no-dbus", action="store_false",
2836
dest="use_dbus", help="Do not provide D-Bus"
2837
" system bus interface", default=None)
2838
parser.add_argument("--no-ipv6", action="store_false",
2839
dest="use_ipv6", help="Do not use IPv6",
2840
default=None)
2841
parser.add_argument("--no-restore", action="store_false",
2842
dest="restore", help="Do not restore stored"
2843
" state", default=None)
2844
parser.add_argument("--socket", type=int,
2845
help="Specify a file descriptor to a network"
2846
" socket to use instead of creating one")
2847
parser.add_argument("--statedir", metavar="DIR",
2848
help="Directory to save/restore state in")
2849
parser.add_argument("--foreground", action="store_true",
2850
help="Run in foreground", default=None)
2851
parser.add_argument("--no-zeroconf", action="store_false",
2852
dest="zeroconf", help="Do not use Zeroconf",
2853
default=None)
2854
2855
options = parser.parse_args()
2856
1704
2857
if options.check:
1705
2858
import doctest
1706
doctest.testmod()
1707
sys.exit()
1708
2859
fail_count, test_count = doctest.testmod()
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2861
1709
2862
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1720
}
1721
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
1722
2881
# Parse config file for server-global settings
1723
2882
server_config = configparser.SafeConfigParser(server_defaults)
1724
2883
del server_defaults
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2884
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1727
2885
# Convert the SafeConfigParser object to a dict
1728
2886
server_settings = server_config.defaults()
1729
2887
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2890
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2891
option)
1733
2892
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2893
server_settings["port"] = server_config.getint("DEFAULT",
2894
"port")
2895
if server_settings["socket"]:
2896
server_settings["socket"] = server_config.getint("DEFAULT",
2897
"socket")
2898
# Later, stdin will, and stdout and stderr might, be dup'ed
2899
# over with an opened os.devnull. But we don't want this to
2900
# happen with a supplied network socket.
2901
if 0 <= server_settings["socket"] <= 2:
2902
server_settings["socket"] = os.dup(server_settings
2903
["socket"])
1736
2904
del server_config
1737
2905
1738
2906
# Override the settings from the config file with command line
1739
2907
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2908
for option in ("interface", "address", "port", "debug",
2909
"priority", "servicename", "configdir", "use_dbus",
2910
"use_ipv6", "debuglevel", "restore", "statedir",
2911
"socket", "foreground", "zeroconf"):
1743
2912
value = getattr(options, option)
1744
2913
if value is not None:
1745
2914
server_settings[option] = value
1746
2915
del options
1747
2916
# Force all strings to be unicode
1748
2917
for option in server_settings.keys():
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2918
if isinstance(server_settings[option], bytes):
2919
server_settings[option] = (server_settings[option]
2920
.decode("utf-8"))
2921
# Force all boolean options to be boolean
2922
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2923
"foreground", "zeroconf"):
2924
server_settings[option] = bool(server_settings[option])
2925
# Debug implies foreground
2926
if server_settings["debug"]:
2927
server_settings["foreground"] = True
1751
2928
# Now we have our good server settings in "server_settings"
1752
2929
1753
2930
##################################################################
1754
2931
2932
if (not server_settings["zeroconf"]
2933
and not (server_settings["port"]
2934
or server_settings["socket"] != "")):
2935
parser.error("Needs port or socket to work without Zeroconf")
2936
1755
2937
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1762
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
1766
2938
debug = server_settings["debug"]
2939
debuglevel = server_settings["debuglevel"]
2940
use_dbus = server_settings["use_dbus"]
2941
use_ipv6 = server_settings["use_ipv6"]
2942
stored_state_path = os.path.join(server_settings["statedir"],
2943
stored_state_file)
2944
foreground = server_settings["foreground"]
2945
zeroconf = server_settings["zeroconf"]
2946
2947
if debug:
2948
initlogger(debug, logging.DEBUG)
2949
else:
2950
if not debuglevel:
2951
initlogger(debug)
2952
else:
2953
level = getattr(logging, debuglevel.upper())
2954
initlogger(debug, level)
2955
2956
if server_settings["servicename"] != "Mandos":
2957
syslogger.setFormatter(
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
' %(levelname)s: %(message)s'.format(
2960
server_settings["servicename"])))
2961
1767
2962
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
1778
2963
client_config = configparser.SafeConfigParser(Client
2964
.client_defaults)
2965
client_config.read(os.path.join(server_settings["configdir"],
2966
"clients.conf"))
2967
1779
2968
global mandos_dbus_service
1780
2969
mandos_dbus_service = None
1781
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
1793
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
1797
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
1802
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2970
2971
socketfd = None
2972
if server_settings["socket"] != "":
2973
socketfd = server_settings["socket"]
2974
tcp_server = MandosServer(
2975
(server_settings["address"], server_settings["port"]),
2976
ClientHandler,
2977
interface=(server_settings["interface"] or None),
2978
use_ipv6=use_ipv6,
2979
gnutls_priority=server_settings["priority"],
2980
use_dbus=use_dbus,
2981
socketfd=socketfd)
2982
if not foreground:
2983
pidfilename = "/run/mandos.pid"
2984
if not os.path.isdir("/run/."):
2985
pidfilename = "/var/run/mandos.pid"
2986
pidfile = None
2987
try:
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2989
except IOError as e:
2990
logger.error("Could not open file %r", pidfilename,
2991
exc_info=e)
2992
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2996
try:
2997
uid = pwd.getpwnam(name).pw_uid
2998
gid = pwd.getpwnam(group).pw_gid
2999
break
1805
3000
except KeyError:
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
3001
continue
3002
else:
3003
uid = 65534
3004
gid = 65534
1812
3005
try:
1813
3006
os.setgid(gid)
1814
3007
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
1818
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
3008
if debug:
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
gid))
3011
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
3014
if error.errno != errno.EPERM:
3015
raise
1826
3016
1827
3017
if debug:
1828
3018
# Enable all possible GnuTLS debugging
1829
3019
1830
3020
# "Use a log level over 10 to enable all debugging options."
1831
3021
# - GnuTLS manual
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
1833
1834
@gnutls.library.types.gnutls_log_func
3022
gnutls.global_set_log_level(11)
3023
3024
@gnutls.log_func
1835
3025
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1837
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
1840
3026
logger.debug("GnuTLS: %s", string[:-1])
3027
3028
gnutls.global_set_log_function(debug_gnutls)
3029
1841
3030
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
3032
os.dup2(null, sys.stdin.fileno())
1844
3033
if null > 2:
1845
3034
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
1850
3035
3036
# Need to fork before connecting to D-Bus
3037
if not foreground:
3038
# Close all input and output, do double fork, etc.
3039
daemon()
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
1851
3045
global main_loop
1852
3046
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
1854
main_loop = gobject.MainLoop()
3047
DBusGMainLoop(set_as_default=True)
3048
main_loop = GLib.MainLoop()
1855
3049
bus = dbus.SystemBus()
1856
3050
# End of Avahi example code
1857
3051
if use_dbus:
1858
3052
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1860
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
3053
bus_name = dbus.service.BusName("se.recompile.Mandos",
3054
bus,
3055
do_not_queue=True)
3056
old_bus_name = dbus.service.BusName(
3057
"se.bsnet.fukt.Mandos", bus,
3058
do_not_queue=True)
3059
except dbus.exceptions.DBusException as e:
3060
logger.error("Disabling D-Bus:", exc_info=e)
1863
3061
use_dbus = False
1864
server_settings[u"use_dbus"] = False
3062
server_settings["use_dbus"] = False
1865
3063
tcp_server.use_dbus = False
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
3064
if zeroconf:
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3066
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
3071
if server_settings["interface"]:
3072
service.interface = if_nametoindex(
3073
server_settings["interface"].encode("utf-8"))
1873
3074
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
1878
3075
global multiprocessing_manager
1879
3076
multiprocessing_manager = multiprocessing.Manager()
1880
3077
1881
3078
client_class = Client
1882
3079
if use_dbus:
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
3082
client_settings = Client.config_parser(client_config)
3083
old_client_settings = {}
3084
clients_data = {}
3085
3086
# This is used to redirect stdout and stderr for checker processes
3087
global wnull
3088
wnull = open(os.devnull, "w") # A writable /dev/null
3089
# Only used if server is running in foreground but not in debug
3090
# mode
3091
if debug or not foreground:
3092
wnull.close()
3093
3094
# Get client data and settings from last running state.
3095
if server_settings["restore"]:
3096
try:
3097
with open(stored_state_path, "rb") as stored_state:
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3100
stored_state)
3101
else:
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3106
# .keys()
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3118
clients_data[key] = value
3119
# .client_structure
3120
value["client_structure"] = [
3121
(s.decode("utf-8")
3122
if isinstance(s, bytes)
3123
else s) for s in
3124
value["client_structure"]]
3125
# .name & .host
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3130
# .keys()
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3134
else key): value
3135
for key, value in
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3138
# .host
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3142
.decode("utf-8"))
3143
os.remove(stored_state_path)
3144
except IOError as e:
3145
if e.errno == errno.ENOENT:
3146
logger.warning("Could not load persistent state:"
3147
" {}".format(os.strerror(e.errno)))
3148
else:
3149
logger.critical("Could not load persistent state:",
3150
exc_info=e)
3151
raise
3152
except EOFError as e:
3153
logger.warning("Could not load persistent state: "
3154
"EOFError:",
3155
exc_info=e)
3156
3157
with PGPEngine() as pgp:
3158
for client_name, client in clients_data.items():
3159
# Skip removed clients
3160
if client_name not in client_settings:
3161
continue
3162
3163
# Decide which value to use after restoring saved state.
3164
# We have three different values: Old config file,
3165
# new config file, and saved state.
3166
# New config value takes precedence if it differs from old
3167
# config value, otherwise use saved state.
3168
for name, value in client_settings[client_name].items():
3169
try:
3170
# For each value in new config, check if it
3171
# differs from the old config value (Except for
3172
# the "secret" attribute)
3173
if (name != "secret"
3174
and (value !=
3175
old_client_settings[client_name][name])):
3176
client[name] = value
3177
except KeyError:
3178
pass
3179
3180
# Clients who has passed its expire date can still be
3181
# enabled if its last checker was successful. A Client
3182
# whose checker succeeded before we stored its state is
3183
# assumed to have successfully run all checkers during
3184
# downtime.
3185
if client["enabled"]:
3186
if datetime.datetime.utcnow() >= client["expires"]:
3187
if not client["last_checked_ok"]:
3188
logger.warning(
3189
"disabling client {} - Client never "
3190
"performed a successful checker".format(
3191
client_name))
3192
client["enabled"] = False
3193
elif client["last_checker_status"] != 0:
3194
logger.warning(
3195
"disabling client {} - Client last"
3196
" checker failed with error code"
3197
" {}".format(
3198
client_name,
3199
client["last_checker_status"]))
3200
client["enabled"] = False
3201
else:
3202
client["expires"] = (
3203
datetime.datetime.utcnow()
3204
+ client["timeout"])
3205
logger.debug("Last checker succeeded,"
3206
" keeping {} enabled".format(
3207
client_name))
1891
3208
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
3209
client["secret"] = pgp.decrypt(
3210
client["encrypted_secret"],
3211
client_settings[client_name]["secret"])
3212
except PGPError:
3213
# If decryption fails, we use secret from new settings
3214
logger.debug("Failed to decrypt {} old secret".format(
3215
client_name))
3216
client["secret"] = (client_settings[client_name]
3217
["secret"])
3218
3219
# Add/remove clients based on new changes made to config
3220
for client_name in (set(old_client_settings)
3221
- set(client_settings)):
3222
del clients_data[client_name]
3223
for client_name in (set(client_settings)
3224
- set(old_client_settings)):
3225
clients_data[client_name] = client_settings[client_name]
3226
3227
# Create all client objects
3228
for client_name, client in clients_data.items():
3229
tcp_server.clients[client_name] = client_class(
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
1901
3234
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
3235
logger.warning("No clients defined")
3236
3237
if not foreground:
3238
if pidfile is not None:
3239
pid = os.getpid()
3240
try:
3241
with pidfile:
3242
print(pid, file=pidfile)
3243
except IOError:
3244
logger.error("Could not write to file %r with PID %d",
3245
pidfilename, pid)
3246
del pidfile
1916
3247
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
1923
3253
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
3254
3255
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
1925
3258
"""A D-Bus proxy object"""
3259
1926
3260
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
3261
dbus.service.Object.__init__(self, bus, "/")
3262
3263
_interface = "se.recompile.Mandos"
3264
3265
@dbus.service.signal(_interface, signature="o")
1931
3266
def ClientAdded(self, objpath):
1932
3267
"D-Bus signal"
1933
3268
pass
1934
1935
@dbus.service.signal(_interface, signature=u"ss")
3269
3270
@dbus.service.signal(_interface, signature="ss")
1936
3271
def ClientNotFound(self, fingerprint, address):
1937
3272
"D-Bus signal"
1938
3273
pass
1939
1940
@dbus.service.signal(_interface, signature=u"os")
3274
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
"true"})
3277
@dbus.service.signal(_interface, signature="os")
1941
3278
def ClientRemoved(self, objpath, name):
1942
3279
"D-Bus signal"
1943
3280
pass
1944
1945
@dbus.service.method(_interface, out_signature=u"ao")
3281
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
"true"})
3284
@dbus.service.method(_interface, out_signature="ao")
1946
3285
def GetAllClients(self):
1947
3286
"D-Bus method"
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
1950
3287
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3289
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3291
"true"})
1951
3292
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
3293
out_signature="a{oa{sv}}")
1953
3294
def GetAllClientsWithProperties(self):
1954
3295
"D-Bus method"
1955
3296
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1959
1960
@dbus.service.method(_interface, in_signature=u"o")
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
3300
signature="oa{sv}")
3301
3302
@dbus.service.method(_interface, in_signature="o")
1961
3303
def RemoveClient(self, object_path):
1962
3304
"D-Bus method"
1963
for c in tcp_server.clients:
3305
for c in tcp_server.clients.values():
1964
3306
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
3307
del tcp_server.clients[c.name]
1966
3308
c.remove_from_connection()
1967
# Don't signal anything except ClientRemoved
3309
# Don't signal the disabling
1968
3310
c.disable(quiet=True)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
1971
3313
return
1972
3314
raise KeyError(object_path)
1973
3315
1974
3316
del _interface
1975
3317
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3321
"""D-Bus method"""
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3332
if use_dbus:
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3336
dbus.Dictionary(
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3340
# Old signal
3341
self.ClientAdded(client.dbus_object_path)
3342
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3345
if use_dbus:
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3350
# Old signal
3351
self.ClientRemoved(client.dbus_object_path,
3352
client.name)
3353
1976
3354
mandos_dbus_service = MandosDBusService()
1977
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
1978
3361
def cleanup():
1979
3362
"Cleanup function; run on exit"
1980
service.cleanup()
1981
3363
if zeroconf:
3364
service.cleanup()
3365
3366
mp.active_children()
3367
wn.close()
3368
if not (tcp_server.clients or client_settings):
3369
return
3370
3371
# Store client before exiting. Secrets are encrypted with key
3372
# based on what config file has. If config file is
3373
# removed/edited, old secret will thus be unrecovable.
3374
clients = {}
3375
with PGPEngine() as pgp:
3376
for client in tcp_server.clients.values():
3377
key = client_settings[client.name]["secret"]
3378
client.encrypted_secret = pgp.encrypt(client.secret,
3379
key)
3380
client_dict = {}
3381
3382
# A list of attributes that can not be pickled
3383
# + secret.
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3386
for name, typ in inspect.getmembers(dbus.service
3387
.Object):
3388
exclude.add(name)
3389
3390
client_dict["encrypted_secret"] = (client
3391
.encrypted_secret)
3392
for attr in client.client_structure:
3393
if attr not in exclude:
3394
client_dict[attr] = getattr(client, attr)
3395
3396
clients[client.name] = client_dict
3397
del client_settings[client.name]["secret"]
3398
3399
try:
3400
with tempfile.NamedTemporaryFile(
3401
mode='wb',
3402
suffix=".pickle",
3403
prefix='clients-',
3404
dir=os.path.dirname(stored_state_path),
3405
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3407
protocol=2)
3408
tempname = stored_state.name
3409
os.rename(tempname, stored_state_path)
3410
except (IOError, OSError) as e:
3411
if not debug:
3412
try:
3413
os.remove(tempname)
3414
except NameError:
3415
pass
3416
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3417
logger.warning("Could not save persistent state: {}"
3418
.format(os.strerror(e.errno)))
3419
else:
3420
logger.warning("Could not save persistent state:",
3421
exc_info=e)
3422
raise
3423
3424
# Delete all clients, and settings from config
1982
3425
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
3426
name, client = tcp_server.clients.popitem()
1984
3427
if use_dbus:
1985
3428
client.remove_from_connection()
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3429
# Don't signal the disabling
1988
3430
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
1989
3432
if use_dbus:
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
1993
3433
mandos_dbus_service.client_removed_signal(client)
3434
client_settings.clear()
3435
1994
3436
atexit.register(cleanup)
1995
1996
for client in tcp_server.clients:
3437
3438
for client in tcp_server.clients.values():
1997
3439
if use_dbus:
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2001
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
3442
# Need to initiate checking of clients
3443
if client.enabled:
3444
client.init_checker()
3445
2002
3446
tcp_server.enable()
2003
3447
tcp_server.server_activate()
2004
3448
2005
3449
# Find out what port we got
2006
service.port = tcp_server.socket.getsockname()[1]
3450
if zeroconf:
3451
service.port = tcp_server.socket.getsockname()[1]
2007
3452
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
3453
logger.info("Now listening on address %r, port %d,"
3454
" flowinfo %d, scope_id %d",
3455
*tcp_server.socket.getsockname())
2011
3456
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2014
2015
#service.interface = tcp_server.socket.getsockname()[3]
2016
3457
logger.info("Now listening on address %r, port %d",
3458
*tcp_server.socket.getsockname())
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
2017
3462
try:
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
2026
2027
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
lambda *args, **kwargs:
2029
(tcp_server.handle_request
2030
(*args[2:], **kwargs) or True))
2031
2032
logger.debug(u"Starting main loop")
3463
if zeroconf:
3464
# From the Avahi example code
3465
try:
3466
service.activate()
3467
except dbus.exceptions.DBusException as error:
3468
logger.critical("D-Bus Exception", exc_info=error)
3469
cleanup()
3470
sys.exit(1)
3471
# End of Avahi example code
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
3478
logger.debug("Starting main loop")
2033
3479
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3480
except AvahiError as error:
3481
logger.critical("Avahi Error", exc_info=error)
2036
3482
cleanup()
2037
3483
sys.exit(1)
2038
3484
except KeyboardInterrupt:
2039
3485
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3486
print("", file=sys.stderr)
3487
logger.debug("Server received KeyboardInterrupt")
3488
logger.debug("Server exiting")
2043
3489
# Must run before the D-Bus bus name gets deregistered
2044
3490
cleanup()
2045
3491
3492
2046
3493
if __name__ == '__main__':
2047
3494
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0