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- Committer: Teddy Hogeborn
- Date: 2015-08-02 16:45:29 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 325.
- Revision ID: teddy@recompile.se-20150802164529-pemtk1agiqluoiua
Deprecate some D-Bus methods in favor of D-Bus properties.
The following D-Bus methods on the interface
"se.recompile.Mandos.Client" are redundant, and are therefore
deprecated: "Disable", "Enable", "StartChecker", and "StopChecker".
Instead, the D-Bus properties "Enabled" and "CheckerRunning" should be
set, as was always also possible.
* DBUS-API (se.recompile.Mandos.Client.Disable): Remove; deprecated.
(se.recompile.Mandos.Client.Enable): - '' -
(se.recompile.Mandos.Client.StartChecker): - '' -
(se.recompile.Mandos.Client.StopChecker): - '' -
* mandos (ClientDBus.Enable): Annotate as deprecated.
(ClientDBus.StartChecker): - '' -
(ClientDBus.Disable): - '' -
(ClientDBus.StopChecker): - '' -
* mandos-monitor (MandosClientWidget.keypress): Set properties instead
of calling deprecated
methods.
The following D-Bus methods on the interface
"se.recompile.Mandos.Client" are redundant, and are therefore
deprecated: "Disable", "Enable", "StartChecker", and "StopChecker".
Instead, the D-Bus properties "Enabled" and "CheckerRunning" should be
set, as was always also possible.
* DBUS-API (se.recompile.Mandos.Client.Disable): Remove; deprecated.
(se.recompile.Mandos.Client.Enable): - '' -
(se.recompile.Mandos.Client.StartChecker): - '' -
(se.recompile.Mandos.Client.StopChecker): - '' -
* mandos (ClientDBus.Enable): Annotate as deprecated.
(ClientDBus.StartChecker): - '' -
(ClientDBus.Disable): - '' -
(ClientDBus.StopChecker): - '' -
* mandos-monitor (MandosClientWidget.keypress): Set properties instead
of calling deprecated
methods.
- files added:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
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
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
43
import socket
38
import optparse
44
import argparse
39
45
import datetime
40
46
import errno
41
47
import gnutls.crypto
44
50
import gnutls.library.functions
45
51
import gnutls.library.constants
46
52
import gnutls.library.types
47
import ConfigParser as configparser
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
48
57
import sys
49
58
import re
50
59
import os
59
68
import struct
60
69
import fcntl
61
70
import functools
62
import cPickle as pickle
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
63
75
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
64
82
65
83
import dbus
66
84
import dbus.service
67
import gobject
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
68
89
import avahi
69
90
from dbus.mainloop.glib import DBusGMainLoop
70
91
import ctypes
80
101
except ImportError:
81
102
SO_BINDTODEVICE = None
82
103
83
84
version = "1.2.3"
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)
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
108
stored_state_file = "clients.pickle"
109
110
logger = logging.getLogger()
111
syslogger = None
112
113
try:
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
117
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
126
127
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
137
' %(message)s'))
138
logger.addHandler(syslogger)
139
140
if debug:
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
143
' [%(process)d]:'
144
' %(levelname)s:'
145
' %(message)s'))
146
logger.addHandler(console)
147
logger.setLevel(level)
148
149
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
152
pass
153
154
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
158
def __init__(self):
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
166
def __enter__(self):
167
return self
168
169
def __exit__(self, exc_type, exc_value, traceback):
170
self._cleanup()
171
return False
172
173
def __del__(self):
174
self._cleanup()
175
176
def _cleanup(self):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
181
for filename in files:
182
os.remove(os.path.join(root, filename))
183
for dirname in dirs:
184
os.rmdir(os.path.join(root, dirname))
185
# Remove tempdir
186
os.rmdir(self.tempdir)
187
self.tempdir = None
188
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
199
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
205
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
207
'--passphrase-file',
208
passfile.name]
209
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
215
raise PGPError(err)
216
return ciphertext
217
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
223
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
225
'--passphrase-file',
226
passfile.name]
227
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
233
raise PGPError(err)
234
return decrypted_plaintext
235
101
236
102
237
class AvahiError(Exception):
103
238
def __init__(self, value, *args, **kwargs):
104
239
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
108
243
109
244
class AvahiServiceError(AvahiError):
110
245
pass
111
246
247
112
248
class AvahiGroupError(AvahiError):
113
249
pass
114
250
119
255
Attributes:
120
256
interface: integer; avahi.IF_UNSPEC or an interface index.
121
257
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>
258
name: string; Example: 'Mandos'
259
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
125
261
port: integer; what port to announce
126
262
TXT: list of strings; TXT record for the service
127
263
domain: string; Domain to publish on, default to .local if empty.
133
269
server: D-Bus Server
134
270
bus: dbus.SystemBus()
135
271
"""
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):
272
273
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
140
284
self.interface = interface
141
285
self.name = name
142
286
self.type = servicetype
150
294
self.group = None # our entry group
151
295
self.server = None
152
296
self.bus = bus
153
def rename(self):
297
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
154
300
"""Derived from the Avahi example code"""
155
301
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
302
logger.critical("No suitable Zeroconf service name found"
303
" after %i retries, exiting.",
158
304
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 ...",
305
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
309
logger.info("Changing Zeroconf service name to %r ...",
162
310
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()
311
if remove:
312
self.remove()
168
313
try:
169
314
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
315
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
324
175
325
def remove(self):
176
326
"""Derived from the Avahi example code"""
327
if self.entry_group_state_changed_match is not None:
328
self.entry_group_state_changed_match.remove()
329
self.entry_group_state_changed_match = None
177
330
if self.group is not None:
178
331
self.group.Reset()
332
179
333
def add(self):
180
334
"""Derived from the Avahi example code"""
335
self.remove()
181
336
if self.group is None:
182
337
self.group = dbus.Interface(
183
338
self.bus.get_object(avahi.DBUS_NAME,
184
339
self.server.EntryGroupNew()),
185
340
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' ...",
341
self.entry_group_state_changed_match = (
342
self.group.connect_to_signal(
343
'StateChanged', self.entry_group_state_changed))
344
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
345
self.name, self.type)
191
346
self.group.AddService(
192
347
self.interface,
197
352
dbus.UInt16(self.port),
198
353
avahi.string_array_to_txt_array(self.TXT))
199
354
self.group.Commit()
355
200
356
def entry_group_state_changed(self, state, error):
201
357
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
358
logger.debug("Avahi entry group state change: %i", state)
203
359
204
360
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
361
logger.debug("Zeroconf service established.")
206
362
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
363
logger.info("Zeroconf service name collision.")
208
364
self.rename()
209
365
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))
366
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
214
370
def cleanup(self):
215
371
"""Derived from the Avahi example code"""
216
372
if self.group is not None:
217
self.group.Free()
373
try:
374
self.group.Free()
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
377
pass
218
378
self.group = None
219
def server_state_changed(self, state):
379
self.remove()
380
381
def server_state_changed(self, state, error=None):
220
382
"""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()
383
logger.debug("Avahi server state change: %i", state)
384
bad_states = {
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
389
}
390
if state in bad_states:
391
if bad_states[state] is not None:
392
if error is None:
393
logger.error(bad_states[state])
394
else:
395
logger.error(bad_states[state] + ": %r", error)
396
self.cleanup()
225
397
elif state == avahi.SERVER_RUNNING:
226
self.add()
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
410
else:
411
if error is None:
412
logger.debug("Unknown state: %r", state)
413
else:
414
logger.debug("Unknown state: %r: %r", state, error)
415
227
416
def activate(self):
228
417
"""Derived from the Avahi example code"""
229
418
if self.server is None:
230
419
self.server = dbus.Interface(
231
420
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
233
423
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
236
426
self.server_state_changed(self.server.GetState())
237
427
238
428
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
436
return ret
437
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
441
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
444
"""
445
connection.send(func(*args, **kwargs))
446
connection.close()
447
239
448
class Client(object):
240
449
"""A representation of a client host served by this server.
241
450
242
451
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
452
approved: bool(); 'None' if not yet approved/disapproved
244
453
approval_delay: datetime.timedelta(); Time to wait for approval
245
454
approval_duration: datetime.timedelta(); Duration of one approval
246
455
checker: subprocess.Popen(); a running checker process used
253
462
instance %(name)s can be used in the command.
254
463
checker_initiator_tag: a gobject event source tag, or None
255
464
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
256
467
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
468
disable_initiator_tag: a gobject event source tag, or None
259
469
enabled: bool()
260
470
fingerprint: string (40 or 32 hexadecimal digits); used to
263
473
interval: datetime.timedelta(); How often to start a new checker
264
474
last_approval_request: datetime.datetime(); (UTC) or None
265
475
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
267
482
name: string; from the config file, used in log messages and
268
483
D-Bus identifiers
269
484
secret: bytestring; sent verbatim (over TLS) to client
270
485
timeout: datetime.timedelta(); How long from last_checked_ok
271
486
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
272
488
runtime_expansions: Allowed attributes for runtime expansion.
489
expires: datetime.datetime(); time (UTC) when a client will be
490
disabled, or None
491
server_settings: The server_settings dict from main()
273
492
"""
274
493
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")
494
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
498
"last_enabled", "name", "timeout")
499
client_defaults = {
500
"timeout": "PT5M",
501
"extended_timeout": "PT15M",
502
"interval": "PT2M",
503
"checker": "fping -q -- %%(host)s",
504
"host": "",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
508
"enabled": "True",
509
}
279
510
280
511
@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."""
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
518
"""
519
settings = {}
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
523
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
529
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
535
.replace(" ", ""))
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
541
"rb") as secfile:
542
client["secret"] = secfile.read()
543
else:
544
raise TypeError("No secret or secfile for section {}"
545
.format(section))
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
558
559
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
302
562
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()
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
569
570
if self.enabled:
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
575
+ self.timeout)
319
576
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
577
self.last_enabled = None
578
self.expires = None
579
580
logger.debug("Creating client %r", self.name)
581
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
331
586
self.checker = None
332
587
self.checker_initiator_tag = None
333
588
self.disable_initiator_tag = None
334
589
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
590
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)
591
self.approved = None
341
592
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())
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
599
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
347
604
605
# Send notice to process children that client state has changed
348
606
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
607
with self.changedstate:
608
self.changedstate.notify_all()
609
353
610
def enable(self):
354
611
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
612
if getattr(self, "enabled", False):
356
613
# Already enabled
357
614
return
358
self.send_changedstate()
615
self.expires = datetime.datetime.utcnow() + self.timeout
616
self.enabled = True
359
617
self.last_enabled = datetime.datetime.utcnow()
360
# Schedule a new checker to be started an 'interval' from now,
361
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
365
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
618
self.init_checker()
619
self.send_changedstate()
372
620
373
621
def disable(self, quiet=True):
374
622
"""Disable this client."""
375
623
if not getattr(self, "enabled", False):
376
624
return False
377
625
if not quiet:
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
628
gobject.source_remove(self.disable_initiator_tag)
629
self.disable_initiator_tag = None
630
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
633
self.checker_initiator_tag = None
634
self.stop_checker()
635
self.enabled = False
636
if not quiet:
378
637
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
638
# Do not run this again if called by a gobject.timeout_add
392
639
return False
393
640
394
641
def __del__(self):
395
self.disable_hook = None
396
642
self.disable()
397
643
398
def checker_callback(self, pid, condition, command):
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
651
self.start_checker)
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
658
self.start_checker()
659
660
def checker_callback(self, source, condition, connection,
661
command):
399
662
"""The checker has completed, so take appropriate actions."""
400
663
self.checker_callback_tag = None
401
664
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",
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
673
logger.info("Checker for %(name)s succeeded",
406
674
vars(self))
407
675
self.checked_ok()
408
676
else:
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
677
logger.info("Checker for %(name)s failed", vars(self))
411
678
else:
412
logger.warning(u"Checker for %(name)s crashed?",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
413
682
vars(self))
683
return False
414
684
415
685
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
"""
686
"""Assert that the client has been seen, alive and well."""
421
687
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))
688
self.last_checker_status = 0
689
self.last_checker_signal = None
690
self.bump_timeout()
691
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
694
if timeout is None:
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
426
703
427
704
def need_approval(self):
428
705
self.last_approval_request = datetime.datetime.utcnow()
433
710
If a checker already exists, leave it running and do
434
711
nothing."""
435
712
# 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
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
440
717
# checkers alone, the checker would have to take more time
441
718
# than 'timeout' for the client to be disabled, which is as it
442
719
# should be.
443
720
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)
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
723
self.checker.join()
724
self.checker = None
457
725
# Start a new checker if needed
458
726
if self.checker is None:
727
# Escape attributes for the shell
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
459
731
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
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
736
exc_info=error)
737
return True # Try again later
478
738
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)
739
logger.info("Starting checker %r for %s", command,
740
self.name)
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
747
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
760
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
502
764
# Re-run this periodically if run by gobject.timeout_add
503
765
return True
504
766
507
769
if self.checker_callback_tag:
508
770
gobject.source_remove(self.checker_callback_tag)
509
771
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
772
if getattr(self, "checker", None) is None:
511
773
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
774
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
521
776
self.checker = None
522
777
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
525
783
"""Decorators for marking methods of a DBusObjectWithProperties to
526
784
become properties on the D-Bus.
527
785
534
792
"""
535
793
# Encoding deeply encoded byte arrays is not supported yet by the
536
794
# "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)
795
if byte_arrays and signature != "ay":
796
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
540
799
def decorator(func):
541
800
func._dbus_is_property = True
542
801
func._dbus_interface = dbus_interface
543
802
func._dbus_signature = signature
544
803
func._dbus_access = access
545
804
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
805
if func._dbus_name.endswith("_dbus_property"):
547
806
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
return func
809
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
831
return decorator
832
833
834
def dbus_annotations(annotations):
835
"""Decorator to annotate D-Bus methods, signals or properties
836
Usage:
837
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
@dbus_service_property("org.example.Interface", signature="b",
842
access="r")
843
def Property_dbus_property(self):
844
return dbus.Boolean(False)
845
"""
846
847
def decorator(func):
848
func._dbus_annotations = annotations
849
return func
850
550
851
return decorator
551
852
552
853
553
854
class DBusPropertyException(dbus.exceptions.DBusException):
554
855
"""A base class for D-Bus property-related exceptions
555
856
"""
556
def __unicode__(self):
557
return unicode(str(self))
857
pass
558
858
559
859
560
860
class DBusPropertyAccessException(DBusPropertyException):
571
871
572
872
class DBusObjectWithProperties(dbus.service.Object):
573
873
"""A D-Bus object with properties.
574
874
575
875
Classes inheriting from this can use the dbus_service_property
576
876
decorator to expose methods as D-Bus properties. It exposes the
577
877
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
878
"""
579
879
580
880
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
883
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
886
"""
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
False)
583
889
584
def _get_all_dbus_properties(self):
890
def _get_all_dbus_things(self, thing):
585
891
"""Returns a generator of (name, attribute) pairs
586
892
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
896
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
590
898
591
899
def _get_dbus_property(self, interface_name, property_name):
592
900
"""Returns a bound method if one exists which is a D-Bus
593
901
property with the specified name and interface.
594
902
"""
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
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
605
910
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
609
913
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
916
out_signature="v")
612
917
def Get(self, interface_name, property_name):
613
918
"""Standard D-Bus property Get() method, see D-Bus standard.
614
919
"""
615
920
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
921
if prop._dbus_access == "write":
617
922
raise DBusPropertyAccessException(property_name)
618
923
value = prop()
619
if not hasattr(value, u"variant_level"):
924
if not hasattr(value, "variant_level"):
620
925
return value
621
926
return type(value)(value, variant_level=value.variant_level+1)
622
927
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
929
def Set(self, interface_name, property_name, value):
625
930
"""Standard D-Bus property Set() method, see D-Bus standard.
626
931
"""
627
932
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
933
if prop._dbus_access == "read":
629
934
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
935
if prop._dbus_get_args_options["byte_arrays"]:
631
936
# The byte_arrays option is not supported yet on
632
937
# 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))
938
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
637
944
prop(value)
638
945
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
948
out_signature="a{sv}")
641
949
def GetAll(self, interface_name):
642
950
"""Standard D-Bus property GetAll() method, see D-Bus
643
951
standard.
644
952
645
953
Note: Will not include properties with access="write".
646
954
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
649
957
if (interface_name
650
958
and interface_name != prop._dbus_interface):
651
959
# Interface non-empty but did not match
652
960
continue
653
961
# Ignore write-only properties
654
if prop._dbus_access == u"write":
962
if prop._dbus_access == "write":
655
963
continue
656
964
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
659
967
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
970
return dbus.Dictionary(properties, signature="sv")
971
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
976
standard.
977
"""
978
pass
663
979
664
980
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
981
out_signature="s",
666
982
path_keyword='object_path',
667
983
connection_keyword='connection')
668
984
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
985
"""Overloading of standard D-Bus method.
986
987
Inserts property tags and interface annotation tags.
670
988
"""
671
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
990
connection)
673
991
try:
674
992
document = xml.dom.minidom.parseString(xmlstring)
993
675
994
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)
995
e = document.createElement("property")
996
e.setAttribute("name", name)
997
e.setAttribute("type", prop._dbus_signature)
998
e.setAttribute("access", prop._dbus_access)
680
999
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
1000
1001
for if_tag in document.getElementsByTagName("interface"):
1002
# Add property tags
682
1003
for tag in (make_tag(document, name, prop)
683
1004
for name, prop
684
in self._get_all_dbus_properties()
1005
in self._get_all_dbus_things("property")
685
1006
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
1007
== if_tag.getAttribute("name")):
687
1008
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
688
1038
# Add the names to the return values for the
689
1039
# "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")
1040
if (if_tag.getAttribute("name")
1041
== "org.freedesktop.DBus.Properties"):
1042
for cn in if_tag.getElementsByTagName("method"):
1043
if cn.getAttribute("name") == "Get":
1044
for arg in cn.getElementsByTagName("arg"):
1045
if (arg.getAttribute("direction")
1046
== "out"):
1047
arg.setAttribute("name", "value")
1048
elif cn.getAttribute("name") == "GetAll":
1049
for arg in cn.getElementsByTagName("arg"):
1050
if (arg.getAttribute("direction")
1051
== "out"):
1052
arg.setAttribute("name", "props")
1053
xmlstring = document.toxml("utf-8")
704
1054
document.unlink()
705
1055
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
1056
xml.parsers.expat.ExpatError) as error:
1057
logger.error("Failed to override Introspection method",
1058
exc_info=error)
709
1059
return xmlstring
710
1060
711
1061
1062
def datetime_to_dbus(dt, variant_level=0):
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1068
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1073
Usage:
1074
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1080
pass
1081
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1087
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
1091
"""
1092
1093
def wrapper(cls):
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1096
attr = {}
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
# with the wrong interface name
1102
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1105
continue
1106
# Create an alternate D-Bus interface name based on
1107
# the current name
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
1111
# Is this a D-Bus signal?
1112
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
1122
# Create a new, but exactly alike, function
1123
# object, and decorate it to be a new D-Bus signal
1124
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1140
alt_interface,
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1143
try:
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
1147
pass
1148
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
1152
def fixscope(func1, func2):
1153
"""This function is a scope container to pass
1154
func1 and func2 to the "call_both" function
1155
outside of its arguments"""
1156
1157
def call_both(*args, **kwargs):
1158
"""This function will emit two D-Bus
1159
signals by calling func1 and func2"""
1160
func1(*args, **kwargs)
1161
func2(*args, **kwargs)
1162
1163
return call_both
1164
# Create the "call_both" function and add it to
1165
# the class
1166
attr[attrname] = fixscope(attribute, new_function)
1167
# Is this a D-Bus method?
1168
elif getattr(attribute, "_dbus_is_method", False):
1169
# Create a new, but exactly alike, function
1170
# object. Decorate it to be a new D-Bus method
1171
# with the alternate D-Bus interface name. Add it
1172
# to the class.
1173
attr[attrname] = (
1174
dbus.service.method(
1175
alt_interface,
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1184
try:
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1188
pass
1189
# Is this a D-Bus property?
1190
elif getattr(attribute, "_dbus_is_property", False):
1191
# Create a new, but exactly alike, function
1192
# object, and decorate it to be a new D-Bus
1193
# property with the alternate D-Bus interface
1194
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1199
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1207
try:
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1211
pass
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1217
# to the class.
1218
attr[attrname] = (
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1225
if deprecate:
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1229
1230
@dbus_interface_annotations(interface_name)
1231
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1238
attr[aname] = func
1239
break
1240
if interface_names:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1245
return cls
1246
1247
return wrapper
1248
1249
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
712
1252
class ClientDBus(Client, DBusObjectWithProperties):
713
1253
"""A Client class using D-Bus
714
1254
718
1258
"""
719
1259
720
1260
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
722
1264
723
1265
# dbus.service.Object doesn't use super(), so we can't either.
724
1266
725
1267
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1268
self.bus = bus
728
1269
Client.__init__(self, *args, **kwargs)
729
1270
# Only now, when this client is initialized, can it show up on
730
1271
# 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))
1272
client_object_name = str(self.name).translate(
1273
{ord("."): ord("_"),
1274
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
736
1277
DBusObjectWithProperties.__init__(self, self.bus,
737
1278
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
1279
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1282
variant_level=1,
1283
invalidate_only=False,
1284
_interface=_interface):
1285
""" Modify a variable so that it's a property which announces
1286
its changes to DBus.
1287
1288
transform_fun: Function that takes a value and a variant_level
1289
and transforms it to a D-Bus type.
1290
dbus_name: D-Bus name of the variable
1291
type_func: Function that transform the value before sending it
1292
to the D-Bus. Default: no transform
1293
variant_level: D-Bus variant level. Default: 1
1294
"""
1295
attrname = "_{}".format(dbus_name)
1296
1297
def setter(self, value):
1298
if hasattr(self, "dbus_object_path"):
1299
if (not hasattr(self, attrname) or
1300
type_func(getattr(self, attrname, None))
1301
!= type_func(value)):
1302
if invalidate_only:
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1306
else:
1307
dbus_value = transform_func(
1308
type_func(value),
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1311
dbus_value)
1312
self.PropertiesChanged(
1313
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1316
dbus.Array())
1317
setattr(self, attrname, value)
1318
1319
return property(lambda self: getattr(self, attrname), setter)
1320
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
"ApprovalPending",
1324
type_func = bool)
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
"LastEnabled")
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
last_approval_request = notifychangeproperty(
1336
datetime_to_dbus, "LastApprovalRequest")
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1342
approval_duration = notifychangeproperty(
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1345
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1349
extended_timeout = notifychangeproperty(
1350
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1358
1359
del notifychangeproperty
782
1360
783
1361
def __del__(self, *args, **kwargs):
784
1362
try:
785
1363
self.remove_from_connection()
786
1364
except LookupError:
787
1365
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1366
if hasattr(DBusObjectWithProperties, "__del__"):
789
1367
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1368
Client.__del__(self, *args, **kwargs)
791
1369
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)
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1374
**kwargs)
1375
exitstatus = self.last_checker_status
1376
if exitstatus >= 0:
801
1377
# Emit D-Bus signal
802
1378
self.CheckerCompleted(dbus.Int16(exitstatus),
803
dbus.Int64(condition),
1379
dbus.Int64(0),
804
1380
dbus.String(command))
805
1381
else:
806
1382
# Emit D-Bus signal
807
1383
self.CheckerCompleted(dbus.Int16(-1),
808
dbus.Int64(condition),
1384
dbus.Int64(
1385
self.last_checker_signal),
809
1386
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
1387
return ret
831
1388
832
1389
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
1390
old_checker_pid = getattr(self.checker, "pid", None)
838
1391
r = Client.start_checker(self, *args, **kwargs)
839
1392
# Only if new checker process was started
840
1393
if (self.checker is not None
841
1394
and old_checker_pid != self.checker.pid):
842
1395
# Emit D-Bus signal
843
1396
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1397
return r
848
1398
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1399
def _reset_approved(self):
859
self._approved = None
1400
self.approved = None
860
1401
return False
861
1402
862
1403
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
863
1407
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
1408
870
1409
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1410
1411
## Interfaces
872
1412
873
1413
## Signals
874
1414
875
1415
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1416
@dbus.service.signal(_interface, signature="nxs")
877
1417
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1418
"D-Bus signal"
879
1419
pass
880
1420
881
1421
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1422
@dbus.service.signal(_interface, signature="s")
883
1423
def CheckerStarted(self, command):
884
1424
"D-Bus signal"
885
1425
pass
886
1426
887
1427
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
@dbus.service.signal(_interface, signature="sv")
889
1430
def PropertyChanged(self, property, value):
890
1431
"D-Bus signal"
891
1432
pass
900
1441
pass
901
1442
902
1443
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1444
@dbus.service.signal(_interface, signature="s")
904
1445
def Rejected(self, reason):
905
1446
"D-Bus signal"
906
1447
pass
907
1448
908
1449
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1450
@dbus.service.signal(_interface, signature="tb")
910
1451
def NeedApproval(self, timeout, default):
911
1452
"D-Bus signal"
912
1453
return self.need_approval()
914
1455
## Methods
915
1456
916
1457
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1458
@dbus.service.method(_interface, in_signature="b")
918
1459
def Approve(self, value):
919
1460
self.approve(value)
920
1461
921
1462
# CheckedOK - method
922
1463
@dbus.service.method(_interface)
923
1464
def CheckedOK(self):
924
return self.checked_ok()
1465
self.checked_ok()
925
1466
926
1467
# Enable - method
1468
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
927
1469
@dbus.service.method(_interface)
928
1470
def Enable(self):
929
1471
"D-Bus method"
930
1472
self.enable()
931
1473
932
1474
# StartChecker - method
1475
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
933
1476
@dbus.service.method(_interface)
934
1477
def StartChecker(self):
935
1478
"D-Bus method"
936
1479
self.start_checker()
937
1480
938
1481
# Disable - method
1482
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
939
1483
@dbus.service.method(_interface)
940
1484
def Disable(self):
941
1485
"D-Bus method"
942
1486
self.disable()
943
1487
944
1488
# StopChecker - method
1489
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
945
1490
@dbus.service.method(_interface)
946
1491
def StopChecker(self):
947
1492
self.stop_checker()
949
1494
## Properties
950
1495
951
1496
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1497
@dbus_service_property(_interface, signature="b", access="read")
953
1498
def ApprovalPending_dbus_property(self):
954
1499
return dbus.Boolean(bool(self.approvals_pending))
955
1500
956
1501
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1502
@dbus_service_property(_interface,
1503
signature="b",
1504
access="readwrite")
959
1505
def ApprovedByDefault_dbus_property(self, value=None):
960
1506
if value is None: # get
961
1507
return dbus.Boolean(self.approved_by_default)
962
1508
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
1509
967
1510
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1511
@dbus_service_property(_interface,
1512
signature="t",
1513
access="readwrite")
970
1514
def ApprovalDelay_dbus_property(self, value=None):
971
1515
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
1516
return dbus.UInt64(self.approval_delay.total_seconds()
1517
* 1000)
973
1518
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
1519
978
1520
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1521
@dbus_service_property(_interface,
1522
signature="t",
1523
access="readwrite")
981
1524
def ApprovalDuration_dbus_property(self, value=None):
982
1525
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1526
return dbus.UInt64(self.approval_duration.total_seconds()
1527
* 1000)
985
1528
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
1529
990
1530
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1531
@dbus_annotations(
1532
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1533
@dbus_service_property(_interface, signature="s", access="read")
992
1534
def Name_dbus_property(self):
993
1535
return dbus.String(self.name)
994
1536
995
1537
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1538
@dbus_annotations(
1539
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1540
@dbus_service_property(_interface, signature="s", access="read")
997
1541
def Fingerprint_dbus_property(self):
998
1542
return dbus.String(self.fingerprint)
999
1543
1000
1544
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1545
@dbus_service_property(_interface,
1546
signature="s",
1547
access="readwrite")
1003
1548
def Host_dbus_property(self, value=None):
1004
1549
if value is None: # get
1005
1550
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))
1551
self.host = str(value)
1010
1552
1011
1553
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1554
@dbus_annotations(
1555
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1556
@dbus_service_property(_interface, signature="s", access="read")
1013
1557
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1558
return datetime_to_dbus(self.created)
1015
1559
1016
1560
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1561
@dbus_service_property(_interface, signature="s", access="read")
1018
1562
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))
1563
return datetime_to_dbus(self.last_enabled)
1022
1564
1023
1565
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1566
@dbus_service_property(_interface,
1567
signature="b",
1568
access="readwrite")
1026
1569
def Enabled_dbus_property(self, value=None):
1027
1570
if value is None: # get
1028
1571
return dbus.Boolean(self.enabled)
1032
1575
self.disable()
1033
1576
1034
1577
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1578
@dbus_service_property(_interface,
1579
signature="s",
1580
access="readwrite")
1037
1581
def LastCheckedOK_dbus_property(self, value=None):
1038
1582
if value is not None:
1039
1583
self.checked_ok()
1040
1584
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))
1585
return datetime_to_dbus(self.last_checked_ok)
1586
1587
# LastCheckerStatus - property
1588
@dbus_service_property(_interface, signature="n", access="read")
1589
def LastCheckerStatus_dbus_property(self):
1590
return dbus.Int16(self.last_checker_status)
1591
1592
# Expires - property
1593
@dbus_service_property(_interface, signature="s", access="read")
1594
def Expires_dbus_property(self):
1595
return datetime_to_dbus(self.expires)
1045
1596
1046
1597
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1598
@dbus_service_property(_interface, signature="s", access="read")
1048
1599
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))
1600
return datetime_to_dbus(self.last_approval_request)
1054
1601
1055
1602
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1603
@dbus_service_property(_interface,
1604
signature="t",
1605
access="readwrite")
1058
1606
def Timeout_dbus_property(self, value=None):
1059
1607
if value is None: # get
1060
return dbus.UInt64(self.timeout_milliseconds())
1608
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1609
old_timeout = self.timeout
1061
1610
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))
1611
# Reschedule disabling
1612
if self.enabled:
1613
now = datetime.datetime.utcnow()
1614
self.expires += self.timeout - old_timeout
1615
if self.expires <= now:
1616
# The timeout has passed
1617
self.disable()
1618
else:
1619
if (getattr(self, "disable_initiator_tag", None)
1620
is None):
1621
return
1622
gobject.source_remove(self.disable_initiator_tag)
1623
self.disable_initiator_tag = gobject.timeout_add(
1624
int((self.expires - now).total_seconds() * 1000),
1625
self.disable)
1626
1627
# ExtendedTimeout - property
1628
@dbus_service_property(_interface,
1629
signature="t",
1630
access="readwrite")
1631
def ExtendedTimeout_dbus_property(self, value=None):
1632
if value is None: # get
1633
return dbus.UInt64(self.extended_timeout.total_seconds()
1634
* 1000)
1635
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1636
1083
1637
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1638
@dbus_service_property(_interface,
1639
signature="t",
1640
access="readwrite")
1086
1641
def Interval_dbus_property(self, value=None):
1087
1642
if value is None: # get
1088
return dbus.UInt64(self.interval_milliseconds())
1643
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
1644
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:
1645
if getattr(self, "checker_initiator_tag", None) is None:
1094
1646
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
1100
1647
if self.enabled:
1648
# Reschedule checker run
1649
gobject.source_remove(self.checker_initiator_tag)
1650
self.checker_initiator_tag = gobject.timeout_add(
1651
value, self.start_checker)
1652
self.start_checker() # Start one now, too
1653
1101
1654
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1655
@dbus_service_property(_interface,
1656
signature="s",
1657
access="readwrite")
1104
1658
def Checker_dbus_property(self, value=None):
1105
1659
if value is None: # get
1106
1660
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))
1661
self.checker_command = str(value)
1112
1662
1113
1663
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1664
@dbus_service_property(_interface,
1665
signature="b",
1666
access="readwrite")
1116
1667
def CheckerRunning_dbus_property(self, value=None):
1117
1668
if value is None: # get
1118
1669
return dbus.Boolean(self.checker is not None)
1122
1673
self.stop_checker()
1123
1674
1124
1675
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1676
@dbus_annotations(
1677
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1678
@dbus_service_property(_interface, signature="o", access="read")
1126
1679
def ObjectPath_dbus_property(self):
1127
1680
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1681
1129
1682
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1683
@dbus_annotations(
1684
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1685
"invalidates"})
1686
@dbus_service_property(_interface,
1687
signature="ay",
1688
access="write",
1689
byte_arrays=True)
1132
1690
def Secret_dbus_property(self, value):
1133
self.secret = str(value)
1691
self.secret = bytes(value)
1134
1692
1135
1693
del _interface
1136
1694
1140
1698
self._pipe = child_pipe
1141
1699
self._pipe.send(('init', fpr, address))
1142
1700
if not self._pipe.recv():
1143
raise KeyError()
1144
1701
raise KeyError(fpr)
1702
1145
1703
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1704
if name == '_pipe':
1147
1705
return super(ProxyClient, self).__getattribute__(name)
1148
1706
self._pipe.send(('getattr', name))
1149
1707
data = self._pipe.recv()
1150
1708
if data[0] == 'data':
1151
1709
return data[1]
1152
1710
if data[0] == 'function':
1711
1153
1712
def func(*args, **kwargs):
1154
1713
self._pipe.send(('funcall', name, args, kwargs))
1155
1714
return self._pipe.recv()[1]
1715
1156
1716
return func
1157
1717
1158
1718
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1719
if name == '_pipe':
1160
1720
return super(ProxyClient, self).__setattr__(name, value)
1161
1721
self._pipe.send(('setattr', name, value))
1162
1722
1169
1729
1170
1730
def handle(self):
1171
1731
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",
1732
logger.info("TCP connection from: %s",
1733
str(self.client_address))
1734
logger.debug("Pipe FD: %d",
1175
1735
self.server.child_pipe.fileno())
1176
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1736
1737
session = gnutls.connection.ClientSession(
1738
self.request, gnutls.connection .X509Credentials())
1739
1182
1740
# Note: gnutls.connection.X509Credentials is really a
1183
1741
# generic GnuTLS certificate credentials object so long as
1184
1742
# no X.509 keys are added to it. Therefore, we can use it
1185
1743
# 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"))
1744
1745
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1746
# "+AES-256-CBC", "+SHA1",
1747
# "+COMP-NULL", "+CTYPE-OPENPGP",
1748
# "+DHE-DSS"))
1191
1749
# Use a fallback default, since this MUST be set.
1192
1750
priority = self.server.gnutls_priority
1193
1751
if priority is None:
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
1198
1752
priority = "NORMAL"
1753
gnutls.library.functions.gnutls_priority_set_direct(
1754
session._c_object, priority, None)
1755
1199
1756
# Start communication using the Mandos protocol
1200
1757
# Get protocol number
1201
1758
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1759
logger.debug("Protocol version: %r", line)
1203
1760
try:
1204
1761
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)
1762
raise RuntimeError(line)
1763
except (ValueError, IndexError, RuntimeError) as error:
1764
logger.error("Unknown protocol version: %s", error)
1208
1765
return
1209
1766
1210
1767
# Start GnuTLS connection
1211
1768
try:
1212
1769
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1770
except gnutls.errors.GNUTLSError as error:
1771
logger.warning("Handshake failed: %s", error)
1215
1772
# Do not run session.bye() here: the session is not
1216
1773
# established. Just abandon the request.
1217
1774
return
1218
logger.debug(u"Handshake succeeded")
1219
1775
logger.debug("Handshake succeeded")
1776
1220
1777
approval_required = False
1221
1778
try:
1222
1779
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)
1780
fpr = self.fingerprint(
1781
self.peer_certificate(session))
1782
except (TypeError,
1783
gnutls.errors.GNUTLSError) as error:
1784
logger.warning("Bad certificate: %s", error)
1227
1785
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1786
logger.debug("Fingerprint: %s", fpr)
1787
1230
1788
try:
1231
1789
client = ProxyClient(child_pipe, fpr,
1232
1790
self.client_address)
1240
1798
1241
1799
while True:
1242
1800
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
1801
logger.info("Client %s is disabled",
1802
client.name)
1245
1803
if self.server.use_dbus:
1246
1804
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1805
client.Rejected("Disabled")
1248
1806
return
1249
1807
1250
if client._approved or not client.approval_delay:
1808
if client.approved or not client.approval_delay:
1251
1809
#We are approved or approval is disabled
1252
1810
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1811
elif client.approved is None:
1812
logger.info("Client %s needs approval",
1255
1813
client.name)
1256
1814
if self.server.use_dbus:
1257
1815
# Emit D-Bus signal
1258
1816
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
1817
client.approval_delay.total_seconds()
1818
* 1000, client.approved_by_default)
1261
1819
else:
1262
logger.warning(u"Client %s was not approved",
1820
logger.warning("Client %s was not approved",
1263
1821
client.name)
1264
1822
if self.server.use_dbus:
1265
1823
# Emit D-Bus signal
1267
1825
return
1268
1826
1269
1827
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1828
time = datetime.datetime.now()
1272
1829
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1830
client.changedstate.wait(delay.total_seconds())
1274
1831
client.changedstate.release()
1275
1832
time2 = datetime.datetime.now()
1276
1833
if (time2 - time) >= delay:
1291
1848
while sent_size < len(client.secret):
1292
1849
try:
1293
1850
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1851
except gnutls.errors.GNUTLSError as error:
1852
logger.warning("gnutls send failed",
1853
exc_info=error)
1296
1854
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1855
logger.debug("Sent: %d, remaining: %d", sent,
1856
len(client.secret) - (sent_size
1857
+ sent))
1300
1858
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()
1859
1860
logger.info("Sending secret to %s", client.name)
1861
# bump the timeout using extended_timeout
1862
client.bump_timeout(client.extended_timeout)
1305
1863
if self.server.use_dbus:
1306
1864
# Emit D-Bus signal
1307
1865
client.GotSecret()
1311
1869
client.approvals_pending -= 1
1312
1870
try:
1313
1871
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1872
except gnutls.errors.GNUTLSError as error:
1873
logger.warning("GnuTLS bye failed",
1874
exc_info=error)
1316
1875
1317
1876
@staticmethod
1318
1877
def peer_certificate(session):
1319
1878
"Return the peer's OpenPGP certificate as a bytestring"
1320
1879
# If not an OpenPGP certificate...
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1880
if (gnutls.library.functions.gnutls_certificate_type_get(
1881
session._c_object)
1323
1882
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
1883
# ...do the normal thing
1325
1884
return session.peer_certificate
1328
1887
.gnutls_certificate_get_peers
1329
1888
(session._c_object, ctypes.byref(list_size)))
1330
1889
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1890
raise gnutls.errors.GNUTLSError("error getting peer"
1891
" certificate")
1333
1892
if list_size.value == 0:
1334
1893
return None
1335
1894
cert = cert_list[0]
1339
1898
def fingerprint(openpgp):
1340
1899
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1341
1900
# 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))))
1901
datum = gnutls.library.types.gnutls_datum_t(
1902
ctypes.cast(ctypes.c_char_p(openpgp),
1903
ctypes.POINTER(ctypes.c_ubyte)),
1904
ctypes.c_uint(len(openpgp)))
1347
1905
# New empty GnuTLS certificate
1348
1906
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1907
gnutls.library.functions.gnutls_openpgp_crt_init(
1908
ctypes.byref(crt))
1351
1909
# 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))
1910
gnutls.library.functions.gnutls_openpgp_crt_import(
1911
crt, ctypes.byref(datum),
1912
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1356
1913
# Verify the self signature in the key
1357
1914
crtverify = ctypes.c_uint()
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
1915
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1916
crt, 0, ctypes.byref(crtverify))
1361
1917
if crtverify.value != 0:
1362
1918
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1919
raise gnutls.errors.CertificateSecurityError(
1920
"Verify failed")
1365
1921
# New buffer for the fingerprint
1366
1922
buf = ctypes.create_string_buffer(20)
1367
1923
buf_len = ctypes.c_size_t()
1368
1924
# 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)))
1925
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1926
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1372
1927
# Deinit the certificate
1373
1928
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1374
1929
# Convert the buffer to a Python bytestring
1375
1930
fpr = ctypes.string_at(buf, buf_len.value)
1376
1931
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1932
hex_fpr = binascii.hexlify(fpr).upper()
1378
1933
return hex_fpr
1379
1934
1380
1935
1381
1936
class MultiprocessingMixIn(object):
1382
1937
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1938
1383
1939
def sub_process_main(self, request, address):
1384
1940
try:
1385
1941
self.finish_request(request, address)
1386
except:
1942
except Exception:
1387
1943
self.handle_error(request, address)
1388
1944
self.close_request(request)
1389
1945
1390
1946
def process_request(self, request, address):
1391
1947
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1948
proc = multiprocessing.Process(target = self.sub_process_main,
1949
args = (request, address))
1950
proc.start()
1951
return proc
1952
1394
1953
1395
1954
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1955
""" adds a pipe to the MixIn """
1956
1397
1957
def process_request(self, request, client_address):
1398
1958
"""Overrides and wraps the original process_request().
1399
1959
1400
1960
This function creates a new pipe in self.pipe
1401
1961
"""
1402
1962
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1963
1964
proc = MultiprocessingMixIn.process_request(self, request,
1965
client_address)
1406
1966
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1967
self.add_pipe(parent_pipe, proc)
1968
1969
def add_pipe(self, parent_pipe, proc):
1410
1970
"""Dummy function; override as necessary"""
1411
pass
1971
raise NotImplementedError()
1972
1412
1973
1413
1974
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1975
socketserver.TCPServer, object):
1419
1980
interface: None or a network interface name (string)
1420
1981
use_ipv6: Boolean; to use IPv6 or not
1421
1982
"""
1983
1422
1984
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1985
interface=None,
1986
use_ipv6=True,
1987
socketfd=None):
1988
"""If socketfd is set, use that file descriptor instead of
1989
creating a new one with socket.socket().
1990
"""
1424
1991
self.interface = interface
1425
1992
if use_ipv6:
1426
1993
self.address_family = socket.AF_INET6
1994
if socketfd is not None:
1995
# Save the file descriptor
1996
self.socketfd = socketfd
1997
# Save the original socket.socket() function
1998
self.socket_socket = socket.socket
1999
# To implement --socket, we monkey patch socket.socket.
2000
#
2001
# (When socketserver.TCPServer is a new-style class, we
2002
# could make self.socket into a property instead of monkey
2003
# patching socket.socket.)
2004
#
2005
# Create a one-time-only replacement for socket.socket()
2006
@functools.wraps(socket.socket)
2007
def socket_wrapper(*args, **kwargs):
2008
# Restore original function so subsequent calls are
2009
# not affected.
2010
socket.socket = self.socket_socket
2011
del self.socket_socket
2012
# This time only, return a new socket object from the
2013
# saved file descriptor.
2014
return socket.fromfd(self.socketfd, *args, **kwargs)
2015
# Replace socket.socket() function with wrapper
2016
socket.socket = socket_wrapper
2017
# The socketserver.TCPServer.__init__ will call
2018
# socket.socket(), which might be our replacement,
2019
# socket_wrapper(), if socketfd was set.
1427
2020
socketserver.TCPServer.__init__(self, server_address,
1428
2021
RequestHandlerClass)
2022
1429
2023
def server_bind(self):
1430
2024
"""This overrides the normal server_bind() function
1431
2025
to bind to an interface if one was specified, and also NOT to
1432
2026
bind to an address or port if they were not specified."""
1433
2027
if self.interface is not None:
1434
2028
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
2029
logger.error("SO_BINDTODEVICE does not exist;"
2030
" cannot bind to interface %s",
1437
2031
self.interface)
1438
2032
else:
1439
2033
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)
2034
self.socket.setsockopt(
2035
socket.SOL_SOCKET, SO_BINDTODEVICE,
2036
(self.interface + "\0").encode("utf-8"))
2037
except socket.error as error:
2038
if error.errno == errno.EPERM:
2039
logger.error("No permission to bind to"
2040
" interface %s", self.interface)
2041
elif error.errno == errno.ENOPROTOOPT:
2042
logger.error("SO_BINDTODEVICE not available;"
2043
" cannot bind to interface %s",
2044
self.interface)
2045
elif error.errno == errno.ENODEV:
2046
logger.error("Interface %s does not exist,"
2047
" cannot bind", self.interface)
1453
2048
else:
1454
2049
raise
1455
2050
# Only bind(2) the socket if we really need to.
1456
2051
if self.server_address[0] or self.server_address[1]:
1457
2052
if not self.server_address[0]:
1458
2053
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
2054
any_address = "::" # in6addr_any
1460
2055
else:
1461
any_address = socket.INADDR_ANY
2056
any_address = "0.0.0.0" # INADDR_ANY
1462
2057
self.server_address = (any_address,
1463
2058
self.server_address[1])
1464
2059
elif not self.server_address[1]:
1465
self.server_address = (self.server_address[0],
1466
0)
2060
self.server_address = (self.server_address[0], 0)
1467
2061
# if self.interface:
1468
2062
# self.server_address = (self.server_address[0],
1469
2063
# 0, # port
1483
2077
1484
2078
Assumes a gobject.MainLoop event loop.
1485
2079
"""
2080
1486
2081
def __init__(self, server_address, RequestHandlerClass,
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2082
interface=None,
2083
use_ipv6=True,
2084
clients=None,
2085
gnutls_priority=None,
2086
use_dbus=True,
2087
socketfd=None):
1489
2088
self.enabled = False
1490
2089
self.clients = clients
1491
2090
if self.clients is None:
1492
self.clients = set()
2091
self.clients = {}
1493
2092
self.use_dbus = use_dbus
1494
2093
self.gnutls_priority = gnutls_priority
1495
2094
IPv6_TCPServer.__init__(self, server_address,
1496
2095
RequestHandlerClass,
1497
2096
interface = interface,
1498
use_ipv6 = use_ipv6)
2097
use_ipv6 = use_ipv6,
2098
socketfd = socketfd)
2099
1499
2100
def server_activate(self):
1500
2101
if self.enabled:
1501
2102
return socketserver.TCPServer.server_activate(self)
2103
1502
2104
def enable(self):
1503
2105
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2106
2107
def add_pipe(self, parent_pipe, proc):
1505
2108
# 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,
2109
gobject.io_add_watch(
2110
parent_pipe.fileno(),
2111
gobject.IO_IN | gobject.IO_HUP,
2112
functools.partial(self.handle_ipc,
2113
parent_pipe = parent_pipe,
2114
proc = proc))
2115
2116
def handle_ipc(self, source, condition,
2117
parent_pipe=None,
2118
proc = None,
1512
2119
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):
2120
# error, or the other end of multiprocessing.Pipe has closed
2121
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2122
# Wait for other process to exit
2123
proc.join()
1529
2124
return False
1530
2125
1531
2126
# Read a request from the child
1536
2131
fpr = request[1]
1537
2132
address = request[2]
1538
2133
1539
for c in self.clients:
2134
for c in self.clients.itervalues():
1540
2135
if c.fingerprint == fpr:
1541
2136
client = c
1542
2137
break
1543
2138
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2139
logger.info("Client not found for fingerprint: %s, ad"
2140
"dress: %s", fpr, address)
1546
2141
if self.use_dbus:
1547
2142
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2143
mandos_dbus_service.ClientNotFound(fpr,
2144
address[0])
1549
2145
parent_pipe.send(False)
1550
2146
return False
1551
2147
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))
2148
gobject.io_add_watch(
2149
parent_pipe.fileno(),
2150
gobject.IO_IN | gobject.IO_HUP,
2151
functools.partial(self.handle_ipc,
2152
parent_pipe = parent_pipe,
2153
proc = proc,
2154
client_object = client))
1557
2155
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2156
# remove the old hook in favor of the new above hook on
2157
# same fileno
1559
2158
return False
1560
2159
if command == 'funcall':
1561
2160
funcname = request[1]
1562
2161
args = request[2]
1563
2162
kwargs = request[3]
1564
2163
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2164
parent_pipe.send(('data', getattr(client_object,
2165
funcname)(*args,
2166
**kwargs)))
2167
1567
2168
if command == 'getattr':
1568
2169
attrname = request[1]
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2170
if isinstance(client_object.__getattribute__(attrname),
2171
collections.Callable):
2172
parent_pipe.send(('function', ))
1571
2173
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2174
parent_pipe.send((
2175
'data', client_object.__getattribute__(attrname)))
1573
2176
1574
2177
if command == 'setattr':
1575
2178
attrname = request[1]
1576
2179
value = request[2]
1577
2180
setattr(client_object, attrname, value)
1578
2181
1579
2182
return True
1580
2183
1581
2184
2185
def rfc3339_duration_to_delta(duration):
2186
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2187
2188
>>> rfc3339_duration_to_delta("P7D")
2189
datetime.timedelta(7)
2190
>>> rfc3339_duration_to_delta("PT60S")
2191
datetime.timedelta(0, 60)
2192
>>> rfc3339_duration_to_delta("PT60M")
2193
datetime.timedelta(0, 3600)
2194
>>> rfc3339_duration_to_delta("PT24H")
2195
datetime.timedelta(1)
2196
>>> rfc3339_duration_to_delta("P1W")
2197
datetime.timedelta(7)
2198
>>> rfc3339_duration_to_delta("PT5M30S")
2199
datetime.timedelta(0, 330)
2200
>>> rfc3339_duration_to_delta("P1DT3M20S")
2201
datetime.timedelta(1, 200)
2202
"""
2203
2204
# Parsing an RFC 3339 duration with regular expressions is not
2205
# possible - there would have to be multiple places for the same
2206
# values, like seconds. The current code, while more esoteric, is
2207
# cleaner without depending on a parsing library. If Python had a
2208
# built-in library for parsing we would use it, but we'd like to
2209
# avoid excessive use of external libraries.
2210
2211
# New type for defining tokens, syntax, and semantics all-in-one
2212
Token = collections.namedtuple("Token", (
2213
"regexp", # To match token; if "value" is not None, must have
2214
# a "group" containing digits
2215
"value", # datetime.timedelta or None
2216
"followers")) # Tokens valid after this token
2217
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2218
# the "duration" ABNF definition in RFC 3339, Appendix A.
2219
token_end = Token(re.compile(r"$"), None, frozenset())
2220
token_second = Token(re.compile(r"(\d+)S"),
2221
datetime.timedelta(seconds=1),
2222
frozenset((token_end, )))
2223
token_minute = Token(re.compile(r"(\d+)M"),
2224
datetime.timedelta(minutes=1),
2225
frozenset((token_second, token_end)))
2226
token_hour = Token(re.compile(r"(\d+)H"),
2227
datetime.timedelta(hours=1),
2228
frozenset((token_minute, token_end)))
2229
token_time = Token(re.compile(r"T"),
2230
None,
2231
frozenset((token_hour, token_minute,
2232
token_second)))
2233
token_day = Token(re.compile(r"(\d+)D"),
2234
datetime.timedelta(days=1),
2235
frozenset((token_time, token_end)))
2236
token_month = Token(re.compile(r"(\d+)M"),
2237
datetime.timedelta(weeks=4),
2238
frozenset((token_day, token_end)))
2239
token_year = Token(re.compile(r"(\d+)Y"),
2240
datetime.timedelta(weeks=52),
2241
frozenset((token_month, token_end)))
2242
token_week = Token(re.compile(r"(\d+)W"),
2243
datetime.timedelta(weeks=1),
2244
frozenset((token_end, )))
2245
token_duration = Token(re.compile(r"P"), None,
2246
frozenset((token_year, token_month,
2247
token_day, token_time,
2248
token_week)))
2249
# Define starting values
2250
value = datetime.timedelta() # Value so far
2251
found_token = None
2252
followers = frozenset((token_duration, )) # Following valid tokens
2253
s = duration # String left to parse
2254
# Loop until end token is found
2255
while found_token is not token_end:
2256
# Search for any currently valid tokens
2257
for token in followers:
2258
match = token.regexp.match(s)
2259
if match is not None:
2260
# Token found
2261
if token.value is not None:
2262
# Value found, parse digits
2263
factor = int(match.group(1), 10)
2264
# Add to value so far
2265
value += factor * token.value
2266
# Strip token from string
2267
s = token.regexp.sub("", s, 1)
2268
# Go to found token
2269
found_token = token
2270
# Set valid next tokens
2271
followers = found_token.followers
2272
break
2273
else:
2274
# No currently valid tokens were found
2275
raise ValueError("Invalid RFC 3339 duration: {!r}"
2276
.format(duration))
2277
# End token found
2278
return value
2279
2280
1582
2281
def string_to_delta(interval):
1583
2282
"""Parse a string and return a datetime.timedelta
1584
2283
1585
>>> string_to_delta(u'7d')
2284
>>> string_to_delta('7d')
1586
2285
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2286
>>> string_to_delta('60s')
1588
2287
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2288
>>> string_to_delta('60m')
1590
2289
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2290
>>> string_to_delta('24h')
1592
2291
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2292
>>> string_to_delta('1w')
1594
2293
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2294
>>> string_to_delta('5m 30s')
1596
2295
datetime.timedelta(0, 330)
1597
2296
"""
2297
2298
try:
2299
return rfc3339_duration_to_delta(interval)
2300
except ValueError:
2301
pass
2302
1598
2303
timevalue = datetime.timedelta(0)
1599
2304
for s in interval.split():
1600
2305
try:
1601
suffix = unicode(s[-1])
2306
suffix = s[-1]
1602
2307
value = int(s[:-1])
1603
if suffix == u"d":
2308
if suffix == "d":
1604
2309
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2310
elif suffix == "s":
1606
2311
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2312
elif suffix == "m":
1608
2313
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2314
elif suffix == "h":
1610
2315
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2316
elif suffix == "w":
1612
2317
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2318
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2319
raise ValueError("Unknown suffix {!r}".format(suffix))
2320
except IndexError as e:
2321
raise ValueError(*(e.args))
1617
2322
timevalue += delta
1618
2323
return timevalue
1619
2324
1620
2325
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
2326
def daemon(nochdir = False, noclose = False):
1646
2327
"""See daemon(3). Standard BSD Unix function.
1647
2328
1650
2331
sys.exit()
1651
2332
os.setsid()
1652
2333
if not nochdir:
1653
os.chdir(u"/")
2334
os.chdir("/")
1654
2335
if os.fork():
1655
2336
sys.exit()
1656
2337
if not noclose:
1657
2338
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2339
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2340
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2341
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2342
"{} not a character device"
2343
.format(os.devnull))
1663
2344
os.dup2(null, sys.stdin.fileno())
1664
2345
os.dup2(null, sys.stdout.fileno())
1665
2346
os.dup2(null, sys.stderr.fileno())
1672
2353
##################################################################
1673
2354
# Parsing of options, both command line and config file
1674
2355
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]
2356
parser = argparse.ArgumentParser()
2357
parser.add_argument("-v", "--version", action="version",
2358
version = "%(prog)s {}".format(version),
2359
help="show version number and exit")
2360
parser.add_argument("-i", "--interface", metavar="IF",
2361
help="Bind to interface IF")
2362
parser.add_argument("-a", "--address",
2363
help="Address to listen for requests on")
2364
parser.add_argument("-p", "--port", type=int,
2365
help="Port number to receive requests on")
2366
parser.add_argument("--check", action="store_true",
2367
help="Run self-test")
2368
parser.add_argument("--debug", action="store_true",
2369
help="Debug mode; run in foreground and log"
2370
" to terminal", default=None)
2371
parser.add_argument("--debuglevel", metavar="LEVEL",
2372
help="Debug level for stdout output")
2373
parser.add_argument("--priority", help="GnuTLS"
2374
" priority string (see GnuTLS documentation)")
2375
parser.add_argument("--servicename",
2376
metavar="NAME", help="Zeroconf service name")
2377
parser.add_argument("--configdir",
2378
default="/etc/mandos", metavar="DIR",
2379
help="Directory to search for configuration"
2380
" files")
2381
parser.add_argument("--no-dbus", action="store_false",
2382
dest="use_dbus", help="Do not provide D-Bus"
2383
" system bus interface", default=None)
2384
parser.add_argument("--no-ipv6", action="store_false",
2385
dest="use_ipv6", help="Do not use IPv6",
2386
default=None)
2387
parser.add_argument("--no-restore", action="store_false",
2388
dest="restore", help="Do not restore stored"
2389
" state", default=None)
2390
parser.add_argument("--socket", type=int,
2391
help="Specify a file descriptor to a network"
2392
" socket to use instead of creating one")
2393
parser.add_argument("--statedir", metavar="DIR",
2394
help="Directory to save/restore state in")
2395
parser.add_argument("--foreground", action="store_true",
2396
help="Run in foreground", default=None)
2397
parser.add_argument("--no-zeroconf", action="store_false",
2398
dest="zeroconf", help="Do not use Zeroconf",
2399
default=None)
2400
2401
options = parser.parse_args()
1703
2402
1704
2403
if options.check:
1705
2404
import doctest
1706
doctest.testmod()
1707
sys.exit()
2405
fail_count, test_count = doctest.testmod()
2406
sys.exit(os.EX_OK if fail_count == 0 else 1)
1708
2407
1709
2408
# 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
}
2409
server_defaults = { "interface": "",
2410
"address": "",
2411
"port": "",
2412
"debug": "False",
2413
"priority":
2414
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2415
":+SIGN-DSA-SHA256",
2416
"servicename": "Mandos",
2417
"use_dbus": "True",
2418
"use_ipv6": "True",
2419
"debuglevel": "",
2420
"restore": "True",
2421
"socket": "",
2422
"statedir": "/var/lib/mandos",
2423
"foreground": "False",
2424
"zeroconf": "True",
2425
}
1721
2426
1722
2427
# Parse config file for server-global settings
1723
2428
server_config = configparser.SafeConfigParser(server_defaults)
1724
2429
del server_defaults
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2430
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1727
2431
# Convert the SafeConfigParser object to a dict
1728
2432
server_settings = server_config.defaults()
1729
2433
# 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",
2434
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2435
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2436
option)
1733
2437
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2438
server_settings["port"] = server_config.getint("DEFAULT",
2439
"port")
2440
if server_settings["socket"]:
2441
server_settings["socket"] = server_config.getint("DEFAULT",
2442
"socket")
2443
# Later, stdin will, and stdout and stderr might, be dup'ed
2444
# over with an opened os.devnull. But we don't want this to
2445
# happen with a supplied network socket.
2446
if 0 <= server_settings["socket"] <= 2:
2447
server_settings["socket"] = os.dup(server_settings
2448
["socket"])
1736
2449
del server_config
1737
2450
1738
2451
# Override the settings from the config file with command line
1739
2452
# 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"):
2453
for option in ("interface", "address", "port", "debug",
2454
"priority", "servicename", "configdir", "use_dbus",
2455
"use_ipv6", "debuglevel", "restore", "statedir",
2456
"socket", "foreground", "zeroconf"):
1743
2457
value = getattr(options, option)
1744
2458
if value is not None:
1745
2459
server_settings[option] = value
1746
2460
del options
1747
2461
# Force all strings to be unicode
1748
2462
for option in server_settings.keys():
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2463
if isinstance(server_settings[option], bytes):
2464
server_settings[option] = (server_settings[option]
2465
.decode("utf-8"))
2466
# Force all boolean options to be boolean
2467
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2468
"foreground", "zeroconf"):
2469
server_settings[option] = bool(server_settings[option])
2470
# Debug implies foreground
2471
if server_settings["debug"]:
2472
server_settings["foreground"] = True
1751
2473
# Now we have our good server settings in "server_settings"
1752
2474
1753
2475
##################################################################
1754
2476
2477
if (not server_settings["zeroconf"]
2478
and not (server_settings["port"]
2479
or server_settings["socket"] != "")):
2480
parser.error("Needs port or socket to work without Zeroconf")
2481
1755
2482
# 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"]))
2483
debug = server_settings["debug"]
2484
debuglevel = server_settings["debuglevel"]
2485
use_dbus = server_settings["use_dbus"]
2486
use_ipv6 = server_settings["use_ipv6"]
2487
stored_state_path = os.path.join(server_settings["statedir"],
2488
stored_state_file)
2489
foreground = server_settings["foreground"]
2490
zeroconf = server_settings["zeroconf"]
2491
2492
if debug:
2493
initlogger(debug, logging.DEBUG)
2494
else:
2495
if not debuglevel:
2496
initlogger(debug)
2497
else:
2498
level = getattr(logging, debuglevel.upper())
2499
initlogger(debug, level)
2500
2501
if server_settings["servicename"] != "Mandos":
2502
syslogger.setFormatter(
2503
logging.Formatter('Mandos ({}) [%(process)d]:'
2504
' %(levelname)s: %(message)s'.format(
2505
server_settings["servicename"])))
1766
2506
1767
2507
# 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"))
2508
client_config = configparser.SafeConfigParser(Client
2509
.client_defaults)
2510
client_config.read(os.path.join(server_settings["configdir"],
2511
"clients.conf"))
1778
2512
1779
2513
global mandos_dbus_service
1780
2514
mandos_dbus_service = None
1781
2515
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"
2516
socketfd = None
2517
if server_settings["socket"] != "":
2518
socketfd = server_settings["socket"]
2519
tcp_server = MandosServer(
2520
(server_settings["address"], server_settings["port"]),
2521
ClientHandler,
2522
interface=(server_settings["interface"] or None),
2523
use_ipv6=use_ipv6,
2524
gnutls_priority=server_settings["priority"],
2525
use_dbus=use_dbus,
2526
socketfd=socketfd)
2527
if not foreground:
2528
pidfilename = "/run/mandos.pid"
2529
if not os.path.isdir("/run/."):
2530
pidfilename = "/var/run/mandos.pid"
2531
pidfile = None
1793
2532
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2533
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2534
except IOError as e:
2535
logger.error("Could not open file %r", pidfilename,
2536
exc_info=e)
1797
2537
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2538
for name in ("_mandos", "mandos", "nobody"):
1802
2539
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2540
uid = pwd.getpwnam(name).pw_uid
2541
gid = pwd.getpwnam(name).pw_gid
2542
break
1805
2543
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
2544
continue
2545
else:
2546
uid = 65534
2547
gid = 65534
1812
2548
try:
1813
2549
os.setgid(gid)
1814
2550
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
2551
except OSError as error:
2552
if error.errno != errno.EPERM:
2553
raise
1818
2554
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2555
if debug:
1828
2556
# Enable all possible GnuTLS debugging
1829
2557
1833
2561
1834
2562
@gnutls.library.types.gnutls_log_func
1835
2563
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2564
logger.debug("GnuTLS: %s", string[:-1])
1837
2565
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
2566
gnutls.library.functions.gnutls_global_set_log_function(
2567
debug_gnutls)
1840
2568
1841
2569
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2570
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2571
os.dup2(null, sys.stdin.fileno())
1844
2572
if null > 2:
1845
2573
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2574
1850
2575
# Need to fork before connecting to D-Bus
1851
if not debug:
2576
if not foreground:
1852
2577
# Close all input and output, do double fork, etc.
1853
2578
daemon()
1854
2579
2580
# multiprocessing will use threads, so before we use gobject we
2581
# need to inform gobject that threads will be used.
2582
gobject.threads_init()
2583
1855
2584
global main_loop
1856
2585
# From the Avahi example code
1857
DBusGMainLoop(set_as_default=True )
2586
DBusGMainLoop(set_as_default=True)
1858
2587
main_loop = gobject.MainLoop()
1859
2588
bus = dbus.SystemBus()
1860
2589
# End of Avahi example code
1861
2590
if use_dbus:
1862
2591
try:
1863
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1864
bus, do_not_queue=True)
1865
except dbus.exceptions.NameExistsException, e:
1866
logger.error(unicode(e) + u", disabling D-Bus")
2592
bus_name = dbus.service.BusName("se.recompile.Mandos",
2593
bus,
2594
do_not_queue=True)
2595
old_bus_name = dbus.service.BusName(
2596
"se.bsnet.fukt.Mandos", bus,
2597
do_not_queue=True)
2598
except dbus.exceptions.DBusException as e:
2599
logger.error("Disabling D-Bus:", exc_info=e)
1867
2600
use_dbus = False
1868
server_settings[u"use_dbus"] = False
2601
server_settings["use_dbus"] = False
1869
2602
tcp_server.use_dbus = False
1870
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1871
service = AvahiService(name = server_settings[u"servicename"],
1872
servicetype = u"_mandos._tcp",
1873
protocol = protocol, bus = bus)
1874
if server_settings["interface"]:
1875
service.interface = (if_nametoindex
1876
(str(server_settings[u"interface"])))
2603
if zeroconf:
2604
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2605
service = AvahiServiceToSyslog(
2606
name = server_settings["servicename"],
2607
servicetype = "_mandos._tcp",
2608
protocol = protocol,
2609
bus = bus)
2610
if server_settings["interface"]:
2611
service.interface = if_nametoindex(
2612
server_settings["interface"].encode("utf-8"))
1877
2613
1878
2614
global multiprocessing_manager
1879
2615
multiprocessing_manager = multiprocessing.Manager()
1881
2617
client_class = Client
1882
2618
if use_dbus:
1883
2619
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):
2620
2621
client_settings = Client.config_parser(client_config)
2622
old_client_settings = {}
2623
clients_data = {}
2624
2625
# This is used to redirect stdout and stderr for checker processes
2626
global wnull
2627
wnull = open(os.devnull, "w") # A writable /dev/null
2628
# Only used if server is running in foreground but not in debug
2629
# mode
2630
if debug or not foreground:
2631
wnull.close()
2632
2633
# Get client data and settings from last running state.
2634
if server_settings["restore"]:
2635
try:
2636
with open(stored_state_path, "rb") as stored_state:
2637
clients_data, old_client_settings = pickle.load(
2638
stored_state)
2639
os.remove(stored_state_path)
2640
except IOError as e:
2641
if e.errno == errno.ENOENT:
2642
logger.warning("Could not load persistent state:"
2643
" {}".format(os.strerror(e.errno)))
2644
else:
2645
logger.critical("Could not load persistent state:",
2646
exc_info=e)
2647
raise
2648
except EOFError as e:
2649
logger.warning("Could not load persistent state: "
2650
"EOFError:",
2651
exc_info=e)
2652
2653
with PGPEngine() as pgp:
2654
for client_name, client in clients_data.items():
2655
# Skip removed clients
2656
if client_name not in client_settings:
2657
continue
2658
2659
# Decide which value to use after restoring saved state.
2660
# We have three different values: Old config file,
2661
# new config file, and saved state.
2662
# New config value takes precedence if it differs from old
2663
# config value, otherwise use saved state.
2664
for name, value in client_settings[client_name].items():
2665
try:
2666
# For each value in new config, check if it
2667
# differs from the old config value (Except for
2668
# the "secret" attribute)
2669
if (name != "secret"
2670
and (value !=
2671
old_client_settings[client_name][name])):
2672
client[name] = value
2673
except KeyError:
2674
pass
2675
2676
# Clients who has passed its expire date can still be
2677
# enabled if its last checker was successful. A Client
2678
# whose checker succeeded before we stored its state is
2679
# assumed to have successfully run all checkers during
2680
# downtime.
2681
if client["enabled"]:
2682
if datetime.datetime.utcnow() >= client["expires"]:
2683
if not client["last_checked_ok"]:
2684
logger.warning(
2685
"disabling client {} - Client never "
2686
"performed a successful checker".format(
2687
client_name))
2688
client["enabled"] = False
2689
elif client["last_checker_status"] != 0:
2690
logger.warning(
2691
"disabling client {} - Client last"
2692
" checker failed with error code"
2693
" {}".format(
2694
client_name,
2695
client["last_checker_status"]))
2696
client["enabled"] = False
2697
else:
2698
client["expires"] = (
2699
datetime.datetime.utcnow()
2700
+ client["timeout"])
2701
logger.debug("Last checker succeeded,"
2702
" keeping {} enabled".format(
2703
client_name))
1891
2704
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()))
2705
client["secret"] = pgp.decrypt(
2706
client["encrypted_secret"],
2707
client_settings[client_name]["secret"])
2708
except PGPError:
2709
# If decryption fails, we use secret from new settings
2710
logger.debug("Failed to decrypt {} old secret".format(
2711
client_name))
2712
client["secret"] = (client_settings[client_name]
2713
["secret"])
2714
2715
# Add/remove clients based on new changes made to config
2716
for client_name in (set(old_client_settings)
2717
- set(client_settings)):
2718
del clients_data[client_name]
2719
for client_name in (set(client_settings)
2720
- set(old_client_settings)):
2721
clients_data[client_name] = client_settings[client_name]
2722
2723
# Create all client objects
2724
for client_name, client in clients_data.items():
2725
tcp_server.clients[client_name] = client_class(
2726
name = client_name,
2727
settings = client,
2728
server_settings = server_settings)
2729
1901
2730
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
2731
logger.warning("No clients defined")
2732
2733
if not foreground:
2734
if pidfile is not None:
2735
pid = os.getpid()
2736
try:
2737
with pidfile:
2738
print(pid, file=pidfile)
2739
except IOError:
2740
logger.error("Could not write to file %r with PID %d",
2741
pidfilename, pid)
2742
del pidfile
1916
2743
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2744
1920
2745
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2746
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2747
1923
2748
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
2749
2750
@alternate_dbus_interfaces(
2751
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2752
class MandosDBusService(DBusObjectWithProperties):
1925
2753
"""A D-Bus proxy object"""
2754
1926
2755
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")
2756
dbus.service.Object.__init__(self, bus, "/")
2757
2758
_interface = "se.recompile.Mandos"
2759
2760
@dbus_interface_annotations(_interface)
2761
def _foo(self):
2762
return {
2763
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2764
"false" }
2765
2766
@dbus.service.signal(_interface, signature="o")
1931
2767
def ClientAdded(self, objpath):
1932
2768
"D-Bus signal"
1933
2769
pass
1934
2770
1935
@dbus.service.signal(_interface, signature=u"ss")
2771
@dbus.service.signal(_interface, signature="ss")
1936
2772
def ClientNotFound(self, fingerprint, address):
1937
2773
"D-Bus signal"
1938
2774
pass
1939
2775
1940
@dbus.service.signal(_interface, signature=u"os")
2776
@dbus.service.signal(_interface, signature="os")
1941
2777
def ClientRemoved(self, objpath, name):
1942
2778
"D-Bus signal"
1943
2779
pass
1944
2780
1945
@dbus.service.method(_interface, out_signature=u"ao")
2781
@dbus.service.method(_interface, out_signature="ao")
1946
2782
def GetAllClients(self):
1947
2783
"D-Bus method"
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2784
return dbus.Array(c.dbus_object_path for c in
2785
tcp_server.clients.itervalues())
1950
2786
1951
2787
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2788
out_signature="a{oa{sv}}")
1953
2789
def GetAllClientsWithProperties(self):
1954
2790
"D-Bus method"
1955
2791
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2792
{ c.dbus_object_path: c.GetAll("")
2793
for c in tcp_server.clients.itervalues() },
2794
signature="oa{sv}")
1959
2795
1960
@dbus.service.method(_interface, in_signature=u"o")
2796
@dbus.service.method(_interface, in_signature="o")
1961
2797
def RemoveClient(self, object_path):
1962
2798
"D-Bus method"
1963
for c in tcp_server.clients:
2799
for c in tcp_server.clients.itervalues():
1964
2800
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2801
del tcp_server.clients[c.name]
1966
2802
c.remove_from_connection()
1967
2803
# Don't signal anything except ClientRemoved
1968
2804
c.disable(quiet=True)
1977
2813
1978
2814
def cleanup():
1979
2815
"Cleanup function; run on exit"
1980
service.cleanup()
1981
2816
if zeroconf:
2817
service.cleanup()
2818
2819
multiprocessing.active_children()
2820
wnull.close()
2821
if not (tcp_server.clients or client_settings):
2822
return
2823
2824
# Store client before exiting. Secrets are encrypted with key
2825
# based on what config file has. If config file is
2826
# removed/edited, old secret will thus be unrecovable.
2827
clients = {}
2828
with PGPEngine() as pgp:
2829
for client in tcp_server.clients.itervalues():
2830
key = client_settings[client.name]["secret"]
2831
client.encrypted_secret = pgp.encrypt(client.secret,
2832
key)
2833
client_dict = {}
2834
2835
# A list of attributes that can not be pickled
2836
# + secret.
2837
exclude = { "bus", "changedstate", "secret",
2838
"checker", "server_settings" }
2839
for name, typ in inspect.getmembers(dbus.service
2840
.Object):
2841
exclude.add(name)
2842
2843
client_dict["encrypted_secret"] = (client
2844
.encrypted_secret)
2845
for attr in client.client_structure:
2846
if attr not in exclude:
2847
client_dict[attr] = getattr(client, attr)
2848
2849
clients[client.name] = client_dict
2850
del client_settings[client.name]["secret"]
2851
2852
try:
2853
with tempfile.NamedTemporaryFile(
2854
mode='wb',
2855
suffix=".pickle",
2856
prefix='clients-',
2857
dir=os.path.dirname(stored_state_path),
2858
delete=False) as stored_state:
2859
pickle.dump((clients, client_settings), stored_state)
2860
tempname = stored_state.name
2861
os.rename(tempname, stored_state_path)
2862
except (IOError, OSError) as e:
2863
if not debug:
2864
try:
2865
os.remove(tempname)
2866
except NameError:
2867
pass
2868
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2869
logger.warning("Could not save persistent state: {}"
2870
.format(os.strerror(e.errno)))
2871
else:
2872
logger.warning("Could not save persistent state:",
2873
exc_info=e)
2874
raise
2875
2876
# Delete all clients, and settings from config
1982
2877
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2878
name, client = tcp_server.clients.popitem()
1984
2879
if use_dbus:
1985
2880
client.remove_from_connection()
1986
client.disable_hook = None
1987
2881
# Don't signal anything except ClientRemoved
1988
2882
client.disable(quiet=True)
1989
2883
if use_dbus:
1990
2884
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
2885
mandos_dbus_service.ClientRemoved(
2886
client.dbus_object_path, client.name)
2887
client_settings.clear()
1993
2888
1994
2889
atexit.register(cleanup)
1995
2890
1996
for client in tcp_server.clients:
2891
for client in tcp_server.clients.itervalues():
1997
2892
if use_dbus:
1998
2893
# Emit D-Bus signal
1999
2894
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2895
# Need to initiate checking of clients
2896
if client.enabled:
2897
client.init_checker()
2001
2898
2002
2899
tcp_server.enable()
2003
2900
tcp_server.server_activate()
2004
2901
2005
2902
# Find out what port we got
2006
service.port = tcp_server.socket.getsockname()[1]
2903
if zeroconf:
2904
service.port = tcp_server.socket.getsockname()[1]
2007
2905
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())
2906
logger.info("Now listening on address %r, port %d,"
2907
" flowinfo %d, scope_id %d",
2908
*tcp_server.socket.getsockname())
2011
2909
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2910
logger.info("Now listening on address %r, port %d",
2911
*tcp_server.socket.getsockname())
2014
2912
2015
2913
#service.interface = tcp_server.socket.getsockname()[3]
2016
2914
2017
2915
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
2916
if zeroconf:
2917
# From the Avahi example code
2918
try:
2919
service.activate()
2920
except dbus.exceptions.DBusException as error:
2921
logger.critical("D-Bus Exception", exc_info=error)
2922
cleanup()
2923
sys.exit(1)
2924
# End of Avahi example code
2026
2925
2027
2926
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
2927
lambda *args, **kwargs:
2029
2928
(tcp_server.handle_request
2030
2929
(*args[2:], **kwargs) or True))
2031
2930
2032
logger.debug(u"Starting main loop")
2931
logger.debug("Starting main loop")
2033
2932
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2933
except AvahiError as error:
2934
logger.critical("Avahi Error", exc_info=error)
2036
2935
cleanup()
2037
2936
sys.exit(1)
2038
2937
except KeyboardInterrupt:
2039
2938
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2939
print("", file=sys.stderr)
2940
logger.debug("Server received KeyboardInterrupt")
2941
logger.debug("Server exiting")
2043
2942
# Must run before the D-Bus bus name gets deregistered
2044
2943
cleanup()
2045
2944
2945
2046
2946
if __name__ == '__main__':
2047
2947
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0