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- Committer: teddy at bsnet
- Date: 2010-09-02 19:07:20 UTC
- mto: (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: teddy@fukt.bsnet.se-20100902190720-sp0pitu30isx4pvi
* mandos (ClientDBus.approvals_pending): Bug fix: Only send D-Bus
signals if connected to the
D-Bus.
signals if connected to the
D-Bus.
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
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 © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
43
37
import socket
44
import argparse
38
import optparse
45
39
import datetime
46
40
import errno
47
41
import gnutls.crypto
50
44
import gnutls.library.functions
51
45
import gnutls.library.constants
52
46
import gnutls.library.types
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
47
import ConfigParser as configparser
57
48
import sys
58
49
import re
59
50
import os
68
59
import struct
69
60
import fcntl
70
61
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
62
import cPickle as pickle
75
63
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
82
64
83
65
import dbus
84
66
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
67
import gobject
89
68
import avahi
90
69
from dbus.mainloop.glib import DBusGMainLoop
91
70
import ctypes
101
80
except ImportError:
102
81
SO_BINDTODEVICE = None
103
82
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
83
84
version = "1.0.14"
85
86
logger = logging.getLogger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
100
101
multiprocessing_manager = multiprocessing.Manager()
236
102
237
103
class AvahiError(Exception):
238
104
def __init__(self, value, *args, **kwargs):
239
105
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
243
109
244
110
class AvahiServiceError(AvahiError):
245
111
pass
246
112
247
248
113
class AvahiGroupError(AvahiError):
249
114
pass
250
115
255
120
Attributes:
256
121
interface: integer; avahi.IF_UNSPEC or an interface index.
257
122
Used to optionally bind to the specified interface.
258
name: string; Example: 'Mandos'
259
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
123
name: string; Example: u'Mandos'
124
type: string; Example: u'_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
261
126
port: integer; what port to announce
262
127
TXT: list of strings; TXT record for the service
263
128
domain: string; Domain to publish on, default to .local if empty.
269
134
server: D-Bus Server
270
135
bus: dbus.SystemBus()
271
136
"""
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):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = u"", host = u"", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
284
141
self.interface = interface
285
142
self.name = name
286
143
self.type = servicetype
294
151
self.group = None # our entry group
295
152
self.server = None
296
153
self.bus = bus
297
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
154
def rename(self):
300
155
"""Derived from the Avahi example code"""
301
156
if self.rename_count >= self.max_renames:
302
logger.critical("No suitable Zeroconf service name found"
303
" after %i retries, exiting.",
157
logger.critical(u"No suitable Zeroconf service name found"
158
u" after %i retries, exiting.",
304
159
self.rename_count)
305
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
160
raise AvahiServiceError(u"Too many renames")
161
self.name = self.server.GetAlternativeServiceName(self.name)
162
logger.info(u"Changing Zeroconf service name to %r ...",
163
unicode(self.name))
164
syslogger.setFormatter(logging.Formatter
165
(u'Mandos (%s) [%%(process)d]:'
166
u' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
169
self.add()
308
170
self.rename_count += 1
309
logger.info("Changing Zeroconf service name to %r ...",
310
self.name)
311
if remove:
312
self.remove()
313
try:
314
self.add()
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
325
171
def remove(self):
326
172
"""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
330
173
if self.group is not None:
331
174
self.group.Reset()
332
333
175
def add(self):
334
176
"""Derived from the Avahi example code"""
335
self.remove()
336
177
if self.group is None:
337
178
self.group = dbus.Interface(
338
179
self.bus.get_object(avahi.DBUS_NAME,
339
180
self.server.EntryGroupNew()),
340
181
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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' ...",
182
self.group.connect_to_signal('StateChanged',
183
self
184
.entry_group_state_changed)
185
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
345
186
self.name, self.type)
346
187
self.group.AddService(
347
188
self.interface,
352
193
dbus.UInt16(self.port),
353
194
avahi.string_array_to_txt_array(self.TXT))
354
195
self.group.Commit()
355
356
196
def entry_group_state_changed(self, state, error):
357
197
"""Derived from the Avahi example code"""
358
logger.debug("Avahi entry group state change: %i", state)
198
logger.debug(u"Avahi state change: %i", state)
359
199
360
200
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
logger.debug("Zeroconf service established.")
201
logger.debug(u"Zeroconf service established.")
362
202
elif state == avahi.ENTRY_GROUP_COLLISION:
363
logger.info("Zeroconf service name collision.")
203
logger.warning(u"Zeroconf service name collision.")
364
204
self.rename()
365
205
elif state == avahi.ENTRY_GROUP_FAILURE:
366
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
206
logger.critical(u"Avahi: Error in group state changed %s",
207
unicode(error))
208
raise AvahiGroupError(u"State changed: %s"
209
% unicode(error))
370
210
def cleanup(self):
371
211
"""Derived from the Avahi example code"""
372
212
if self.group is not None:
373
try:
374
self.group.Free()
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
377
pass
213
self.group.Free()
378
214
self.group = None
379
self.remove()
380
381
def server_state_changed(self, state, error=None):
215
def server_state_changed(self, state):
382
216
"""Derived from the Avahi example code"""
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()
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
397
220
elif state == avahi.SERVER_RUNNING:
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
221
self.add()
416
222
def activate(self):
417
223
"""Derived from the Avahi example code"""
418
224
if self.server is None:
419
225
self.server = dbus.Interface(
420
226
self.bus.get_object(avahi.DBUS_NAME,
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
423
228
avahi.DBUS_INTERFACE_SERVER)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
229
self.server.connect_to_signal(u"StateChanged",
230
self.server_state_changed)
426
231
self.server_state_changed(self.server.GetState())
427
232
428
233
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
448
234
class Client(object):
449
235
"""A representation of a client host served by this server.
450
236
451
237
Attributes:
452
approved: bool(); 'None' if not yet approved/disapproved
453
approval_delay: datetime.timedelta(); Time to wait for approval
454
approval_duration: datetime.timedelta(); Duration of one approval
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
240
fingerprint: string (40 or 32 hexadecimal digits); used to
241
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
host: string; available for use by the checker command
244
created: datetime.datetime(); (UTC) object creation
245
last_enabled: datetime.datetime(); (UTC)
246
enabled: bool()
247
last_checked_ok: datetime.datetime(); (UTC) or None
248
timeout: datetime.timedelta(); How long from last_checked_ok
249
until this client is disabled
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
455
252
checker: subprocess.Popen(); a running checker process used
456
253
to see if the client lives.
457
254
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
459
checker_command: string; External command which is run to check
460
if client lives. %() expansions are done at
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
461
260
runtime with vars(self) as dict, so that for
462
261
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
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
467
262
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
469
enabled: bool()
470
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
472
host: string; available for use by the checker command
473
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
475
last_checked_ok: datetime.datetime(); (UTC) or None
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
482
name: string; from the config file, used in log messages and
483
D-Bus identifiers
484
secret: bytestring; sent verbatim (over TLS) to client
485
timeout: datetime.timedelta(); How long from last_checked_ok
486
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
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()
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
492
266
"""
493
267
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
}
510
511
268
@staticmethod
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):
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
def timeout_milliseconds(self):
276
"Return the 'timeout' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.timeout)
278
279
def interval_milliseconds(self):
280
"Return the 'interval' attribute in milliseconds"
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
285
286
def __init__(self, name = None, disable_hook=None, config=None):
287
"""Note: the 'checker' key in 'config' sets the
288
'checker_command' attribute and *not* the 'checker'
289
attribute."""
562
290
self.name = name
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)
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
294
# Uppercase and remove spaces from fingerprint for later
295
# comparison purposes with return value from the fingerprint()
296
# function
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
576
307
else:
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
308
#XXX Need to allow secret on demand!
309
raise TypeError(u"No secret or secfile for client %s"
310
% self.name)
311
self.host = config.get(u"host", u"")
312
self.created = datetime.datetime.utcnow()
313
self.enabled = False
314
self.last_enabled = None
315
self.last_checked_ok = None
316
self.timeout = string_to_delta(config[u"timeout"])
317
self.interval = string_to_delta(config[u"interval"])
318
self.disable_hook = disable_hook
586
319
self.checker = None
587
320
self.checker_initiator_tag = None
588
321
self.disable_initiator_tag = None
589
322
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
590
324
self.current_checker_command = None
591
self.approved = None
325
self.last_connect = None
592
326
self.approvals_pending = 0
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)
327
self._approved = None
328
self.approved_by_default = config.get(u"approved_by_default",
329
True)
330
self.approved_delay = string_to_delta(
331
config[u"approved_delay"])
332
self.approved_duration = string_to_delta(
333
config[u"approved_duration"])
334
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
604
335
605
# Send notice to process children that client state has changed
606
336
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
609
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
610
341
def enable(self):
611
342
"""Start this client's checker and timeout hooks"""
612
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
613
344
# Already enabled
614
345
return
615
self.expires = datetime.datetime.utcnow() + self.timeout
616
self.enabled = True
346
self.send_changedstate()
617
347
self.last_enabled = datetime.datetime.utcnow()
618
self.init_checker()
619
self.send_changedstate()
348
# Schedule a new checker to be started an 'interval' from now,
349
# and every interval from then on.
350
self.checker_initiator_tag = (gobject.timeout_add
351
(self.interval_milliseconds(),
352
self.start_checker))
353
# Schedule a disable() when 'timeout' has passed
354
self.disable_initiator_tag = (gobject.timeout_add
355
(self.timeout_milliseconds(),
356
self.disable))
357
self.enabled = True
358
# Also start a new checker *right now*.
359
self.start_checker()
620
360
621
361
def disable(self, quiet=True):
622
362
"""Disable this client."""
623
363
if not getattr(self, "enabled", False):
624
364
return False
625
365
if not quiet:
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
366
self.send_changedstate()
367
if not quiet:
368
logger.info(u"Disabling client %s", self.name)
369
if getattr(self, u"disable_initiator_tag", False):
628
370
gobject.source_remove(self.disable_initiator_tag)
629
371
self.disable_initiator_tag = None
630
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
372
if getattr(self, u"checker_initiator_tag", False):
632
373
gobject.source_remove(self.checker_initiator_tag)
633
374
self.checker_initiator_tag = None
634
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
635
378
self.enabled = False
636
if not quiet:
637
self.send_changedstate()
638
379
# Do not run this again if called by a gobject.timeout_add
639
380
return False
640
381
641
382
def __del__(self):
383
self.disable_hook = None
642
384
self.disable()
643
385
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):
386
def checker_callback(self, pid, condition, command):
662
387
"""The checker has completed, so take appropriate actions."""
663
388
self.checker_callback_tag = None
664
389
self.checker = None
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",
390
if os.WIFEXITED(condition):
391
exitstatus = os.WEXITSTATUS(condition)
392
if exitstatus == 0:
393
logger.info(u"Checker for %(name)s succeeded",
674
394
vars(self))
675
395
self.checked_ok()
676
396
else:
677
logger.info("Checker for %(name)s failed", vars(self))
397
logger.info(u"Checker for %(name)s failed",
398
vars(self))
678
399
else:
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
400
logger.warning(u"Checker for %(name)s crashed?",
682
401
vars(self))
683
return False
684
402
685
403
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
404
"""Bump up the timeout for this client.
405
406
This should only be called when the client has been seen,
407
alive and well.
408
"""
687
409
self.last_checked_ok = datetime.datetime.utcnow()
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
703
704
def need_approval(self):
705
self.last_approval_request = datetime.datetime.utcnow()
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = (gobject.timeout_add
412
(self.timeout_milliseconds(),
413
self.disable))
706
414
707
415
def start_checker(self):
708
416
"""Start a new checker subprocess if one is not running.
710
418
If a checker already exists, leave it running and do
711
419
nothing."""
712
420
# The reason for not killing a running checker is that if we
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
421
# did that, then if a checker (for some reason) started
422
# running slowly and taking more than 'interval' time, the
423
# client would inevitably timeout, since no checker would get
424
# a chance to run to completion. If we instead leave running
717
425
# checkers alone, the checker would have to take more time
718
426
# than 'timeout' for the client to be disabled, which is as it
719
427
# should be.
720
428
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
429
# If a checker exists, make sure it is not a zombie
430
try:
431
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
432
except (AttributeError, OSError), error:
433
if (isinstance(error, OSError)
434
and error.errno != errno.ECHILD):
435
raise error
436
else:
437
if pid:
438
logger.warning(u"Checker was a zombie")
439
gobject.source_remove(self.checker_callback_tag)
440
self.checker_callback(pid, status,
441
self.current_checker_command)
725
442
# Start a new checker if needed
726
443
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 }
731
444
try:
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
445
# In case checker_command has exactly one % operator
446
command = self.checker_command % self.host
447
except TypeError:
448
# Escape attributes for the shell
449
escaped_attrs = dict((key,
450
re.escape(unicode(str(val),
451
errors=
452
u'replace')))
453
for key, val in
454
vars(self).iteritems())
455
try:
456
command = self.checker_command % escaped_attrs
457
except TypeError, error:
458
logger.error(u'Could not format string "%s":'
459
u' %s', self.checker_command, error)
460
return True # Try again later
738
461
self.current_checker_command = command
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)
462
try:
463
logger.info(u"Starting checker %r for %s",
464
command, self.name)
465
# We don't need to redirect stdout and stderr, since
466
# in normal mode, that is already done by daemon(),
467
# and in debug mode we don't want to. (Stdin is
468
# always replaced by /dev/null.)
469
self.checker = subprocess.Popen(command,
470
close_fds=True,
471
shell=True, cwd=u"/")
472
self.checker_callback_tag = (gobject.child_watch_add
473
(self.checker.pid,
474
self.checker_callback,
475
data=command))
476
# The checker may have completed before the gobject
477
# watch was added. Check for this.
478
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
479
if pid:
480
gobject.source_remove(self.checker_callback_tag)
481
self.checker_callback(pid, status, command)
482
except OSError, error:
483
logger.error(u"Failed to start subprocess: %s",
484
error)
764
485
# Re-run this periodically if run by gobject.timeout_add
765
486
return True
766
487
769
490
if self.checker_callback_tag:
770
491
gobject.source_remove(self.checker_callback_tag)
771
492
self.checker_callback_tag = None
772
if getattr(self, "checker", None) is None:
493
if getattr(self, u"checker", None) is None:
773
494
return
774
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
495
logger.debug(u"Stopping checker for %(name)s", vars(self))
496
try:
497
os.kill(self.checker.pid, signal.SIGTERM)
498
#time.sleep(0.5)
499
#if self.checker.poll() is None:
500
# os.kill(self.checker.pid, signal.SIGKILL)
501
except OSError, error:
502
if error.errno != errno.ESRCH: # No such process
503
raise
776
504
self.checker = None
777
505
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
783
508
"""Decorators for marking methods of a DBusObjectWithProperties to
784
509
become properties on the D-Bus.
785
510
792
517
"""
793
518
# Encoding deeply encoded byte arrays is not supported yet by the
794
519
# "Set" method, so we fail early here:
795
if byte_arrays and signature != "ay":
796
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
799
523
def decorator(func):
800
524
func._dbus_is_property = True
801
525
func._dbus_interface = dbus_interface
802
526
func._dbus_signature = signature
803
527
func._dbus_access = access
804
528
func._dbus_name = func.__name__
805
if func._dbus_name.endswith("_dbus_property"):
529
if func._dbus_name.endswith(u"_dbus_property"):
806
530
func._dbus_name = func._dbus_name[:-14]
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
See also the DBusObjectWithAnnotations class.
847
"""
848
849
def decorator(func):
850
func._dbus_annotations = annotations
851
return func
852
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
532
return func
853
533
return decorator
854
534
855
535
856
536
class DBusPropertyException(dbus.exceptions.DBusException):
857
537
"""A base class for D-Bus property-related exceptions
858
538
"""
859
pass
539
def __unicode__(self):
540
return unicode(str(self))
860
541
861
542
862
543
class DBusPropertyAccessException(DBusPropertyException):
871
552
pass
872
553
873
554
874
class DBusObjectWithAnnotations(dbus.service.Object):
875
"""A D-Bus object with annotations.
876
877
Classes inheriting from this can use the dbus_annotations
878
decorator to add annotations to methods or signals.
879
"""
880
881
@staticmethod
882
def _is_dbus_thing(thing):
883
"""Returns a function testing if an attribute is a D-Bus thing
884
885
If called like _is_dbus_thing("method") it returns a function
886
suitable for use as predicate to inspect.getmembers().
887
"""
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
889
False)
890
891
def _get_all_dbus_things(self, thing):
892
"""Returns a generator of (name, attribute) pairs
893
"""
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
895
athing.__get__(self))
896
for cls in self.__class__.__mro__
897
for name, athing in
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
899
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
901
out_signature = "s",
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
906
907
Inserts annotation tags on methods and signals.
908
"""
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
910
connection)
911
try:
912
document = xml.dom.minidom.parseString(xmlstring)
913
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
918
annots = dict()
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
928
"annotation")
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
939
)).items():
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
951
== "out"):
952
arg.setAttribute("name",
953
"xml_data")
954
xmlstring = document.toxml("utf-8")
955
document.unlink()
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
959
exc_info=error)
960
return xmlstring
961
962
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
555
class DBusObjectWithProperties(dbus.service.Object):
964
556
"""A D-Bus object with properties.
965
557
966
558
Classes inheriting from this can use the dbus_service_property
967
559
decorator to expose methods as D-Bus properties. It exposes the
968
560
standard Get(), Set(), and GetAll() methods on the D-Bus.
969
561
"""
970
562
563
@staticmethod
564
def _is_dbus_property(obj):
565
return getattr(obj, u"_dbus_is_property", False)
566
567
def _get_all_dbus_properties(self):
568
"""Returns a generator of (name, attribute) pairs
569
"""
570
return ((prop._dbus_name, prop)
571
for name, prop in
572
inspect.getmembers(self, self._is_dbus_property))
573
971
574
def _get_dbus_property(self, interface_name, property_name):
972
575
"""Returns a bound method if one exists which is a D-Bus
973
576
property with the specified name and interface.
974
577
"""
975
for cls in self.__class__.__mro__:
976
for name, value in inspect.getmembers(
977
cls, self._is_dbus_thing("property")):
978
if (value._dbus_name == property_name
979
and value._dbus_interface == interface_name):
980
return value.__get__(self)
981
578
for name in (property_name,
579
property_name + u"_dbus_property"):
580
prop = getattr(self, name, None)
581
if (prop is None
582
or not self._is_dbus_property(prop)
583
or prop._dbus_name != property_name
584
or (interface_name and prop._dbus_interface
585
and interface_name != prop._dbus_interface)):
586
continue
587
return prop
982
588
# No such property
983
raise DBusPropertyNotFound("{}:{}.{}".format(
984
self.dbus_object_path, interface_name, property_name))
985
986
@classmethod
987
def _get_all_interface_names(cls):
988
"""Get a sequence of all interfaces supported by an object"""
989
return (name for name in set(getattr(getattr(x, attr),
990
"_dbus_interface", None)
991
for x in (inspect.getmro(cls))
992
for attr in dir(x))
993
if name is not None)
994
995
@dbus.service.method(dbus.PROPERTIES_IFACE,
996
in_signature="ss",
997
out_signature="v")
589
raise DBusPropertyNotFound(self.dbus_object_path + u":"
590
+ interface_name + u"."
591
+ property_name)
592
593
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
594
out_signature=u"v")
998
595
def Get(self, interface_name, property_name):
999
596
"""Standard D-Bus property Get() method, see D-Bus standard.
1000
597
"""
1001
598
prop = self._get_dbus_property(interface_name, property_name)
1002
if prop._dbus_access == "write":
599
if prop._dbus_access == u"write":
1003
600
raise DBusPropertyAccessException(property_name)
1004
601
value = prop()
1005
if not hasattr(value, "variant_level"):
602
if not hasattr(value, u"variant_level"):
1006
603
return value
1007
604
return type(value)(value, variant_level=value.variant_level+1)
1008
605
1009
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1010
607
def Set(self, interface_name, property_name, value):
1011
608
"""Standard D-Bus property Set() method, see D-Bus standard.
1012
609
"""
1013
610
prop = self._get_dbus_property(interface_name, property_name)
1014
if prop._dbus_access == "read":
611
if prop._dbus_access == u"read":
1015
612
raise DBusPropertyAccessException(property_name)
1016
if prop._dbus_get_args_options["byte_arrays"]:
613
if prop._dbus_get_args_options[u"byte_arrays"]:
1017
614
# The byte_arrays option is not supported yet on
1018
615
# signatures other than "ay".
1019
if prop._dbus_signature != "ay":
1020
raise ValueError("Byte arrays not supported for non-"
1021
"'ay' signature {!r}"
1022
.format(prop._dbus_signature))
1023
value = dbus.ByteArray(b''.join(chr(byte)
1024
for byte in value))
616
if prop._dbus_signature != u"ay":
617
raise ValueError
618
value = dbus.ByteArray(''.join(unichr(byte)
619
for byte in value))
1025
620
prop(value)
1026
621
1027
@dbus.service.method(dbus.PROPERTIES_IFACE,
1028
in_signature="s",
1029
out_signature="a{sv}")
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
1030
624
def GetAll(self, interface_name):
1031
625
"""Standard D-Bus property GetAll() method, see D-Bus
1032
626
standard.
1033
627
1034
628
Note: Will not include properties with access="write".
1035
629
"""
1036
properties = {}
1037
for name, prop in self._get_all_dbus_things("property"):
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
1038
632
if (interface_name
1039
633
and interface_name != prop._dbus_interface):
1040
634
# Interface non-empty but did not match
1041
635
continue
1042
636
# Ignore write-only properties
1043
if prop._dbus_access == "write":
637
if prop._dbus_access == u"write":
1044
638
continue
1045
639
value = prop()
1046
if not hasattr(value, "variant_level"):
1047
properties[name] = value
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
1048
642
continue
1049
properties[name] = type(value)(
1050
value, variant_level = value.variant_level + 1)
1051
return dbus.Dictionary(properties, signature="sv")
1052
1053
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1054
def PropertiesChanged(self, interface_name, changed_properties,
1055
invalidated_properties):
1056
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1057
standard.
1058
"""
1059
pass
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
1060
646
1061
647
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1062
out_signature="s",
648
out_signature=u"s",
1063
649
path_keyword='object_path',
1064
650
connection_keyword='connection')
1065
651
def Introspect(self, object_path, connection):
1066
"""Overloading of standard D-Bus method.
1067
1068
Inserts property tags and interface annotation tags.
652
"""Standard D-Bus method, overloaded to insert property tags.
1069
653
"""
1070
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1071
object_path,
1072
connection)
654
xmlstring = dbus.service.Object.Introspect(self, object_path,
655
connection)
1073
656
try:
1074
657
document = xml.dom.minidom.parseString(xmlstring)
1075
1076
658
def make_tag(document, name, prop):
1077
e = document.createElement("property")
1078
e.setAttribute("name", name)
1079
e.setAttribute("type", prop._dbus_signature)
1080
e.setAttribute("access", prop._dbus_access)
659
e = document.createElement(u"property")
660
e.setAttribute(u"name", name)
661
e.setAttribute(u"type", prop._dbus_signature)
662
e.setAttribute(u"access", prop._dbus_access)
1081
663
return e
1082
1083
for if_tag in document.getElementsByTagName("interface"):
1084
# Add property tags
664
for if_tag in document.getElementsByTagName(u"interface"):
1085
665
for tag in (make_tag(document, name, prop)
1086
666
for name, prop
1087
in self._get_all_dbus_things("property")
667
in self._get_all_dbus_properties()
1088
668
if prop._dbus_interface
1089
== if_tag.getAttribute("name")):
669
== if_tag.getAttribute(u"name")):
1090
670
if_tag.appendChild(tag)
1091
# Add annotation tags for properties
1092
for tag in if_tag.getElementsByTagName("property"):
1093
annots = dict()
1094
for name, prop in self._get_all_dbus_things(
1095
"property"):
1096
if (name == tag.getAttribute("name")
1097
and prop._dbus_interface
1098
== if_tag.getAttribute("name")):
1099
annots.update(getattr(
1100
prop, "_dbus_annotations", {}))
1101
for name, value in annots.items():
1102
ann_tag = document.createElement(
1103
"annotation")
1104
ann_tag.setAttribute("name", name)
1105
ann_tag.setAttribute("value", value)
1106
tag.appendChild(ann_tag)
1107
671
# Add the names to the return values for the
1108
672
# "org.freedesktop.DBus.Properties" methods
1109
if (if_tag.getAttribute("name")
1110
== "org.freedesktop.DBus.Properties"):
1111
for cn in if_tag.getElementsByTagName("method"):
1112
if cn.getAttribute("name") == "Get":
1113
for arg in cn.getElementsByTagName("arg"):
1114
if (arg.getAttribute("direction")
1115
== "out"):
1116
arg.setAttribute("name", "value")
1117
elif cn.getAttribute("name") == "GetAll":
1118
for arg in cn.getElementsByTagName("arg"):
1119
if (arg.getAttribute("direction")
1120
== "out"):
1121
arg.setAttribute("name", "props")
1122
xmlstring = document.toxml("utf-8")
1123
document.unlink()
1124
except (AttributeError, xml.dom.DOMException,
1125
xml.parsers.expat.ExpatError) as error:
1126
logger.error("Failed to override Introspection method",
1127
exc_info=error)
1128
return xmlstring
1129
1130
try:
1131
dbus.OBJECT_MANAGER_IFACE
1132
except AttributeError:
1133
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1134
1135
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1136
"""A D-Bus object with an ObjectManager.
1137
1138
Classes inheriting from this exposes the standard
1139
GetManagedObjects call and the InterfacesAdded and
1140
InterfacesRemoved signals on the standard
1141
"org.freedesktop.DBus.ObjectManager" interface.
1142
1143
Note: No signals are sent automatically; they must be sent
1144
manually.
1145
"""
1146
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1147
out_signature = "a{oa{sa{sv}}}")
1148
def GetManagedObjects(self):
1149
"""This function must be overridden"""
1150
raise NotImplementedError()
1151
1152
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1153
signature = "oa{sa{sv}}")
1154
def InterfacesAdded(self, object_path, interfaces_and_properties):
1155
pass
1156
1157
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1158
signature = "oas")
1159
def InterfacesRemoved(self, object_path, interfaces):
1160
pass
1161
1162
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1163
out_signature = "s",
1164
path_keyword = 'object_path',
1165
connection_keyword = 'connection')
1166
def Introspect(self, object_path, connection):
1167
"""Overloading of standard D-Bus method.
1168
1169
Override return argument name of GetManagedObjects to be
1170
"objpath_interfaces_and_properties"
1171
"""
1172
xmlstring = DBusObjectWithAnnotations(self, object_path,
1173
connection)
1174
try:
1175
document = xml.dom.minidom.parseString(xmlstring)
1176
1177
for if_tag in document.getElementsByTagName("interface"):
1178
# Fix argument name for the GetManagedObjects method
1179
if (if_tag.getAttribute("name")
1180
== dbus.OBJECT_MANAGER_IFACE):
1181
for cn in if_tag.getElementsByTagName("method"):
1182
if (cn.getAttribute("name")
1183
== "GetManagedObjects"):
1184
for arg in cn.getElementsByTagName("arg"):
1185
if (arg.getAttribute("direction")
1186
== "out"):
1187
arg.setAttribute(
1188
"name",
1189
"objpath_interfaces"
1190
"_and_properties")
1191
xmlstring = document.toxml("utf-8")
1192
document.unlink()
1193
except (AttributeError, xml.dom.DOMException,
1194
xml.parsers.expat.ExpatError) as error:
1195
logger.error("Failed to override Introspection method",
1196
exc_info = error)
1197
return xmlstring
1198
1199
def datetime_to_dbus(dt, variant_level=0):
1200
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1201
if dt is None:
1202
return dbus.String("", variant_level = variant_level)
1203
return dbus.String(dt.isoformat(), variant_level=variant_level)
1204
1205
1206
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1207
"""A class decorator; applied to a subclass of
1208
dbus.service.Object, it will add alternate D-Bus attributes with
1209
interface names according to the "alt_interface_names" mapping.
1210
Usage:
1211
1212
@alternate_dbus_interfaces({"org.example.Interface":
1213
"net.example.AlternateInterface"})
1214
class SampleDBusObject(dbus.service.Object):
1215
@dbus.service.method("org.example.Interface")
1216
def SampleDBusMethod():
1217
pass
1218
1219
The above "SampleDBusMethod" on "SampleDBusObject" will be
1220
reachable via two interfaces: "org.example.Interface" and
1221
"net.example.AlternateInterface", the latter of which will have
1222
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1223
"true", unless "deprecate" is passed with a False value.
1224
1225
This works for methods and signals, and also for D-Bus properties
1226
(from DBusObjectWithProperties) and interfaces (from the
1227
dbus_interface_annotations decorator).
1228
"""
1229
1230
def wrapper(cls):
1231
for orig_interface_name, alt_interface_name in (
1232
alt_interface_names.items()):
1233
attr = {}
1234
interface_names = set()
1235
# Go though all attributes of the class
1236
for attrname, attribute in inspect.getmembers(cls):
1237
# Ignore non-D-Bus attributes, and D-Bus attributes
1238
# with the wrong interface name
1239
if (not hasattr(attribute, "_dbus_interface")
1240
or not attribute._dbus_interface.startswith(
1241
orig_interface_name)):
1242
continue
1243
# Create an alternate D-Bus interface name based on
1244
# the current name
1245
alt_interface = attribute._dbus_interface.replace(
1246
orig_interface_name, alt_interface_name)
1247
interface_names.add(alt_interface)
1248
# Is this a D-Bus signal?
1249
if getattr(attribute, "_dbus_is_signal", False):
1250
if sys.version_info.major == 2:
1251
# Extract the original non-method undecorated
1252
# function by black magic
1253
nonmethod_func = (dict(
1254
zip(attribute.func_code.co_freevars,
1255
attribute.__closure__))
1256
["func"].cell_contents)
1257
else:
1258
nonmethod_func = attribute
1259
# Create a new, but exactly alike, function
1260
# object, and decorate it to be a new D-Bus signal
1261
# with the alternate D-Bus interface name
1262
if sys.version_info.major == 2:
1263
new_function = types.FunctionType(
1264
nonmethod_func.func_code,
1265
nonmethod_func.func_globals,
1266
nonmethod_func.func_name,
1267
nonmethod_func.func_defaults,
1268
nonmethod_func.func_closure)
1269
else:
1270
new_function = types.FunctionType(
1271
nonmethod_func.__code__,
1272
nonmethod_func.__globals__,
1273
nonmethod_func.__name__,
1274
nonmethod_func.__defaults__,
1275
nonmethod_func.__closure__)
1276
new_function = (dbus.service.signal(
1277
alt_interface,
1278
attribute._dbus_signature)(new_function))
1279
# Copy annotations, if any
1280
try:
1281
new_function._dbus_annotations = dict(
1282
attribute._dbus_annotations)
1283
except AttributeError:
1284
pass
1285
# Define a creator of a function to call both the
1286
# original and alternate functions, so both the
1287
# original and alternate signals gets sent when
1288
# the function is called
1289
def fixscope(func1, func2):
1290
"""This function is a scope container to pass
1291
func1 and func2 to the "call_both" function
1292
outside of its arguments"""
1293
1294
def call_both(*args, **kwargs):
1295
"""This function will emit two D-Bus
1296
signals by calling func1 and func2"""
1297
func1(*args, **kwargs)
1298
func2(*args, **kwargs)
1299
1300
return call_both
1301
# Create the "call_both" function and add it to
1302
# the class
1303
attr[attrname] = fixscope(attribute, new_function)
1304
# Is this a D-Bus method?
1305
elif getattr(attribute, "_dbus_is_method", False):
1306
# Create a new, but exactly alike, function
1307
# object. Decorate it to be a new D-Bus method
1308
# with the alternate D-Bus interface name. Add it
1309
# to the class.
1310
attr[attrname] = (
1311
dbus.service.method(
1312
alt_interface,
1313
attribute._dbus_in_signature,
1314
attribute._dbus_out_signature)
1315
(types.FunctionType(attribute.func_code,
1316
attribute.func_globals,
1317
attribute.func_name,
1318
attribute.func_defaults,
1319
attribute.func_closure)))
1320
# Copy annotations, if any
1321
try:
1322
attr[attrname]._dbus_annotations = dict(
1323
attribute._dbus_annotations)
1324
except AttributeError:
1325
pass
1326
# Is this a D-Bus property?
1327
elif getattr(attribute, "_dbus_is_property", False):
1328
# Create a new, but exactly alike, function
1329
# object, and decorate it to be a new D-Bus
1330
# property with the alternate D-Bus interface
1331
# name. Add it to the class.
1332
attr[attrname] = (dbus_service_property(
1333
alt_interface, attribute._dbus_signature,
1334
attribute._dbus_access,
1335
attribute._dbus_get_args_options
1336
["byte_arrays"])
1337
(types.FunctionType(
1338
attribute.func_code,
1339
attribute.func_globals,
1340
attribute.func_name,
1341
attribute.func_defaults,
1342
attribute.func_closure)))
1343
# Copy annotations, if any
1344
try:
1345
attr[attrname]._dbus_annotations = dict(
1346
attribute._dbus_annotations)
1347
except AttributeError:
1348
pass
1349
# Is this a D-Bus interface?
1350
elif getattr(attribute, "_dbus_is_interface", False):
1351
# Create a new, but exactly alike, function
1352
# object. Decorate it to be a new D-Bus interface
1353
# with the alternate D-Bus interface name. Add it
1354
# to the class.
1355
attr[attrname] = (
1356
dbus_interface_annotations(alt_interface)
1357
(types.FunctionType(attribute.func_code,
1358
attribute.func_globals,
1359
attribute.func_name,
1360
attribute.func_defaults,
1361
attribute.func_closure)))
1362
if deprecate:
1363
# Deprecate all alternate interfaces
1364
iname="_AlternateDBusNames_interface_annotation{}"
1365
for interface_name in interface_names:
1366
1367
@dbus_interface_annotations(interface_name)
1368
def func(self):
1369
return { "org.freedesktop.DBus.Deprecated":
1370
"true" }
1371
# Find an unused name
1372
for aname in (iname.format(i)
1373
for i in itertools.count()):
1374
if aname not in attr:
1375
attr[aname] = func
1376
break
1377
if interface_names:
1378
# Replace the class with a new subclass of it with
1379
# methods, signals, etc. as created above.
1380
cls = type(b"{}Alternate".format(cls.__name__),
1381
(cls, ), attr)
1382
return cls
1383
1384
return wrapper
1385
1386
1387
@alternate_dbus_interfaces({"se.recompile.Mandos":
1388
"se.bsnet.fukt.Mandos"})
673
if (if_tag.getAttribute(u"name")
674
== u"org.freedesktop.DBus.Properties"):
675
for cn in if_tag.getElementsByTagName(u"method"):
676
if cn.getAttribute(u"name") == u"Get":
677
for arg in cn.getElementsByTagName(u"arg"):
678
if (arg.getAttribute(u"direction")
679
== u"out"):
680
arg.setAttribute(u"name", u"value")
681
elif cn.getAttribute(u"name") == u"GetAll":
682
for arg in cn.getElementsByTagName(u"arg"):
683
if (arg.getAttribute(u"direction")
684
== u"out"):
685
arg.setAttribute(u"name", u"props")
686
xmlstring = document.toxml(u"utf-8")
687
document.unlink()
688
except (AttributeError, xml.dom.DOMException,
689
xml.parsers.expat.ExpatError), error:
690
logger.error(u"Failed to override Introspection method",
691
error)
692
return xmlstring
693
694
1389
695
class ClientDBus(Client, DBusObjectWithProperties):
1390
696
"""A Client class using D-Bus
1391
697
1393
699
dbus_object_path: dbus.ObjectPath
1394
700
bus: dbus.SystemBus()
1395
701
"""
1396
1397
runtime_expansions = (Client.runtime_expansions
1398
+ ("dbus_object_path", ))
1399
1400
_interface = "se.recompile.Mandos.Client"
1401
1402
702
# dbus.service.Object doesn't use super(), so we can't either.
1403
703
1404
704
def __init__(self, bus = None, *args, **kwargs):
705
self._approvals_pending = 0
1405
706
self.bus = bus
1406
707
Client.__init__(self, *args, **kwargs)
1407
708
# Only now, when this client is initialized, can it show up on
1408
709
# the D-Bus
1409
client_object_name = str(self.name).translate(
1410
{ord("."): ord("_"),
1411
ord("-"): ord("_")})
1412
self.dbus_object_path = dbus.ObjectPath(
1413
"/clients/" + client_object_name)
710
self.dbus_object_path = (dbus.ObjectPath
711
(u"/clients/"
712
+ self.name.replace(u".", u"_")))
1414
713
DBusObjectWithProperties.__init__(self, self.bus,
1415
714
self.dbus_object_path)
1416
715
1417
def notifychangeproperty(transform_func, dbus_name,
1418
type_func=lambda x: x,
1419
variant_level=1,
1420
invalidate_only=False,
1421
_interface=_interface):
1422
""" Modify a variable so that it's a property which announces
1423
its changes to DBus.
1424
1425
transform_fun: Function that takes a value and a variant_level
1426
and transforms it to a D-Bus type.
1427
dbus_name: D-Bus name of the variable
1428
type_func: Function that transform the value before sending it
1429
to the D-Bus. Default: no transform
1430
variant_level: D-Bus variant level. Default: 1
1431
"""
1432
attrname = "_{}".format(dbus_name)
1433
1434
def setter(self, value):
1435
if hasattr(self, "dbus_object_path"):
1436
if (not hasattr(self, attrname) or
1437
type_func(getattr(self, attrname, None))
1438
!= type_func(value)):
1439
if invalidate_only:
1440
self.PropertiesChanged(
1441
_interface, dbus.Dictionary(),
1442
dbus.Array((dbus_name, )))
1443
else:
1444
dbus_value = transform_func(
1445
type_func(value),
1446
variant_level = variant_level)
1447
self.PropertyChanged(dbus.String(dbus_name),
1448
dbus_value)
1449
self.PropertiesChanged(
1450
_interface,
1451
dbus.Dictionary({ dbus.String(dbus_name):
1452
dbus_value }),
1453
dbus.Array())
1454
setattr(self, attrname, value)
1455
1456
return property(lambda self: getattr(self, attrname), setter)
1457
1458
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1459
approvals_pending = notifychangeproperty(dbus.Boolean,
1460
"ApprovalPending",
1461
type_func = bool)
1462
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1463
last_enabled = notifychangeproperty(datetime_to_dbus,
1464
"LastEnabled")
1465
checker = notifychangeproperty(
1466
dbus.Boolean, "CheckerRunning",
1467
type_func = lambda checker: checker is not None)
1468
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1469
"LastCheckedOK")
1470
last_checker_status = notifychangeproperty(dbus.Int16,
1471
"LastCheckerStatus")
1472
last_approval_request = notifychangeproperty(
1473
datetime_to_dbus, "LastApprovalRequest")
1474
approved_by_default = notifychangeproperty(dbus.Boolean,
1475
"ApprovedByDefault")
1476
approval_delay = notifychangeproperty(
1477
dbus.UInt64, "ApprovalDelay",
1478
type_func = lambda td: td.total_seconds() * 1000)
1479
approval_duration = notifychangeproperty(
1480
dbus.UInt64, "ApprovalDuration",
1481
type_func = lambda td: td.total_seconds() * 1000)
1482
host = notifychangeproperty(dbus.String, "Host")
1483
timeout = notifychangeproperty(
1484
dbus.UInt64, "Timeout",
1485
type_func = lambda td: td.total_seconds() * 1000)
1486
extended_timeout = notifychangeproperty(
1487
dbus.UInt64, "ExtendedTimeout",
1488
type_func = lambda td: td.total_seconds() * 1000)
1489
interval = notifychangeproperty(
1490
dbus.UInt64, "Interval",
1491
type_func = lambda td: td.total_seconds() * 1000)
1492
checker_command = notifychangeproperty(dbus.String, "Checker")
1493
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1494
invalidate_only=True)
1495
1496
del notifychangeproperty
716
def _get_approvals_pending(self, value):
717
return self._approvals_pending
718
def _set_approvals_pending(self, value):
719
old_value = self._approvals_pending
720
self._approvals_pending = value
721
bval = bool(value)
722
if (hasattr(self, "dbus_object_path")
723
and bval is bool(old_value)):
724
dbus_bool = dbus.Boolean(bval, variant_level=1)
725
self.PropertyChanged(dbus.String(u"approved_pending"),
726
dbus_bool)
727
return value
728
approvals_pending = property(_get_approvals_pending,
729
_set_approvals_pending)
730
del _get_approvals_pending, _set_approvals_pending
731
732
@staticmethod
733
def _datetime_to_dbus(dt, variant_level=0):
734
"""Convert a UTC datetime.datetime() to a D-Bus type."""
735
return dbus.String(dt.isoformat(),
736
variant_level=variant_level)
737
738
def enable(self):
739
oldstate = getattr(self, u"enabled", False)
740
r = Client.enable(self)
741
if oldstate != self.enabled:
742
# Emit D-Bus signals
743
self.PropertyChanged(dbus.String(u"enabled"),
744
dbus.Boolean(True, variant_level=1))
745
self.PropertyChanged(
746
dbus.String(u"last_enabled"),
747
self._datetime_to_dbus(self.last_enabled,
748
variant_level=1))
749
return r
750
751
def disable(self, quiet = False):
752
oldstate = getattr(self, u"enabled", False)
753
r = Client.disable(self, quiet=quiet)
754
if not quiet and oldstate != self.enabled:
755
# Emit D-Bus signal
756
self.PropertyChanged(dbus.String(u"enabled"),
757
dbus.Boolean(False, variant_level=1))
758
return r
1497
759
1498
760
def __del__(self, *args, **kwargs):
1499
761
try:
1500
762
self.remove_from_connection()
1501
763
except LookupError:
1502
764
pass
1503
if hasattr(DBusObjectWithProperties, "__del__"):
765
if hasattr(DBusObjectWithProperties, u"__del__"):
1504
766
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1505
767
Client.__del__(self, *args, **kwargs)
1506
768
1507
def checker_callback(self, source, condition,
1508
connection, command, *args, **kwargs):
1509
ret = Client.checker_callback(self, source, condition,
1510
connection, command, *args,
1511
**kwargs)
1512
exitstatus = self.last_checker_status
1513
if exitstatus >= 0:
769
def checker_callback(self, pid, condition, command,
770
*args, **kwargs):
771
self.checker_callback_tag = None
772
self.checker = None
773
# Emit D-Bus signal
774
self.PropertyChanged(dbus.String(u"checker_running"),
775
dbus.Boolean(False, variant_level=1))
776
if os.WIFEXITED(condition):
777
exitstatus = os.WEXITSTATUS(condition)
1514
778
# Emit D-Bus signal
1515
779
self.CheckerCompleted(dbus.Int16(exitstatus),
1516
# This is specific to GNU libC
1517
dbus.Int64(exitstatus << 8),
780
dbus.Int64(condition),
1518
781
dbus.String(command))
1519
782
else:
1520
783
# Emit D-Bus signal
1521
784
self.CheckerCompleted(dbus.Int16(-1),
1522
dbus.Int64(
1523
# This is specific to GNU libC
1524
(exitstatus << 8)
1525
| self.last_checker_signal),
785
dbus.Int64(condition),
1526
786
dbus.String(command))
1527
return ret
787
788
return Client.checker_callback(self, pid, condition, command,
789
*args, **kwargs)
790
791
def checked_ok(self, *args, **kwargs):
792
r = Client.checked_ok(self, *args, **kwargs)
793
# Emit D-Bus signal
794
self.PropertyChanged(
795
dbus.String(u"last_checked_ok"),
796
(self._datetime_to_dbus(self.last_checked_ok,
797
variant_level=1)))
798
return r
1528
799
1529
800
def start_checker(self, *args, **kwargs):
1530
old_checker_pid = getattr(self.checker, "pid", None)
801
old_checker = self.checker
802
if self.checker is not None:
803
old_checker_pid = self.checker.pid
804
else:
805
old_checker_pid = None
1531
806
r = Client.start_checker(self, *args, **kwargs)
1532
807
# Only if new checker process was started
1533
808
if (self.checker is not None
1534
809
and old_checker_pid != self.checker.pid):
1535
810
# Emit D-Bus signal
1536
811
self.CheckerStarted(self.current_checker_command)
812
self.PropertyChanged(
813
dbus.String(u"checker_running"),
814
dbus.Boolean(True, variant_level=1))
1537
815
return r
1538
816
817
def stop_checker(self, *args, **kwargs):
818
old_checker = getattr(self, u"checker", None)
819
r = Client.stop_checker(self, *args, **kwargs)
820
if (old_checker is not None
821
and getattr(self, u"checker", None) is None):
822
self.PropertyChanged(dbus.String(u"checker_running"),
823
dbus.Boolean(False, variant_level=1))
824
return r
825
1539
826
def _reset_approved(self):
1540
self.approved = None
827
self._approved = None
1541
828
return False
1542
829
1543
830
def approve(self, value=True):
1544
self.approved = value
1545
gobject.timeout_add(int(self.approval_duration.total_seconds()
1546
* 1000), self._reset_approved)
1547
self.send_changedstate()
831
self._approved = value
832
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
833
1548
834
1549
835
## D-Bus methods, signals & properties
1550
1551
## Interfaces
836
_interface = u"se.bsnet.fukt.Mandos.Client"
1552
837
1553
838
## Signals
1554
839
1555
840
# CheckerCompleted - signal
1556
@dbus.service.signal(_interface, signature="nxs")
841
@dbus.service.signal(_interface, signature=u"nxs")
1557
842
def CheckerCompleted(self, exitcode, waitstatus, command):
1558
843
"D-Bus signal"
1559
844
pass
1560
845
1561
846
# CheckerStarted - signal
1562
@dbus.service.signal(_interface, signature="s")
847
@dbus.service.signal(_interface, signature=u"s")
1563
848
def CheckerStarted(self, command):
1564
849
"D-Bus signal"
1565
850
pass
1566
851
1567
852
# PropertyChanged - signal
1568
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1569
@dbus.service.signal(_interface, signature="sv")
853
@dbus.service.signal(_interface, signature=u"sv")
1570
854
def PropertyChanged(self, property, value):
1571
855
"D-Bus signal"
1572
856
pass
1574
858
# GotSecret - signal
1575
859
@dbus.service.signal(_interface)
1576
860
def GotSecret(self):
1577
"""D-Bus signal
1578
Is sent after a successful transfer of secret from the Mandos
1579
server to mandos-client
1580
"""
861
"D-Bus signal"
1581
862
pass
1582
863
1583
864
# Rejected - signal
1584
@dbus.service.signal(_interface, signature="s")
865
@dbus.service.signal(_interface, signature=u"s")
1585
866
def Rejected(self, reason):
1586
867
"D-Bus signal"
1587
868
pass
1588
869
1589
870
# NeedApproval - signal
1590
@dbus.service.signal(_interface, signature="tb")
871
@dbus.service.signal(_interface, signature=u"db")
1591
872
def NeedApproval(self, timeout, default):
1592
873
"D-Bus signal"
1593
return self.need_approval()
874
pass
1594
875
1595
876
## Methods
1596
877
1597
878
# Approve - method
1598
@dbus.service.method(_interface, in_signature="b")
879
@dbus.service.method(_interface, in_signature=u"b")
1599
880
def Approve(self, value):
1600
881
self.approve(value)
1601
882
1602
883
# CheckedOK - method
1603
884
@dbus.service.method(_interface)
1604
885
def CheckedOK(self):
1605
self.checked_ok()
886
return self.checked_ok()
1606
887
1607
888
# Enable - method
1608
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1609
889
@dbus.service.method(_interface)
1610
890
def Enable(self):
1611
891
"D-Bus method"
1612
892
self.enable()
1613
893
1614
894
# StartChecker - method
1615
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1616
895
@dbus.service.method(_interface)
1617
896
def StartChecker(self):
1618
897
"D-Bus method"
1619
898
self.start_checker()
1620
899
1621
900
# Disable - method
1622
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1623
901
@dbus.service.method(_interface)
1624
902
def Disable(self):
1625
903
"D-Bus method"
1626
904
self.disable()
1627
905
1628
906
# StopChecker - method
1629
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1630
907
@dbus.service.method(_interface)
1631
908
def StopChecker(self):
1632
909
self.stop_checker()
1633
910
1634
911
## Properties
1635
912
1636
# ApprovalPending - property
1637
@dbus_service_property(_interface, signature="b", access="read")
1638
def ApprovalPending_dbus_property(self):
913
# approved_pending - property
914
@dbus_service_property(_interface, signature=u"b", access=u"read")
915
def approved_pending_dbus_property(self):
1639
916
return dbus.Boolean(bool(self.approvals_pending))
1640
917
1641
# ApprovedByDefault - property
1642
@dbus_service_property(_interface,
1643
signature="b",
1644
access="readwrite")
1645
def ApprovedByDefault_dbus_property(self, value=None):
1646
if value is None: # get
1647
return dbus.Boolean(self.approved_by_default)
1648
self.approved_by_default = bool(value)
1649
1650
# ApprovalDelay - property
1651
@dbus_service_property(_interface,
1652
signature="t",
1653
access="readwrite")
1654
def ApprovalDelay_dbus_property(self, value=None):
1655
if value is None: # get
1656
return dbus.UInt64(self.approval_delay.total_seconds()
1657
* 1000)
1658
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1659
1660
# ApprovalDuration - property
1661
@dbus_service_property(_interface,
1662
signature="t",
1663
access="readwrite")
1664
def ApprovalDuration_dbus_property(self, value=None):
1665
if value is None: # get
1666
return dbus.UInt64(self.approval_duration.total_seconds()
1667
* 1000)
1668
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1669
1670
# Name - property
1671
@dbus_annotations(
1672
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1673
@dbus_service_property(_interface, signature="s", access="read")
1674
def Name_dbus_property(self):
918
# approved_by_default - property
919
@dbus_service_property(_interface, signature=u"b",
920
access=u"readwrite")
921
def approved_by_default_dbus_property(self):
922
return dbus.Boolean(self.approved_by_default)
923
924
# approved_delay - property
925
@dbus_service_property(_interface, signature=u"t",
926
access=u"readwrite")
927
def approved_delay_dbus_property(self):
928
return dbus.UInt64(self.approved_delay_milliseconds())
929
930
# approved_duration - property
931
@dbus_service_property(_interface, signature=u"t",
932
access=u"readwrite")
933
def approved_duration_dbus_property(self):
934
return dbus.UInt64(self._timedelta_to_milliseconds(
935
self.approved_duration))
936
937
# name - property
938
@dbus_service_property(_interface, signature=u"s", access=u"read")
939
def name_dbus_property(self):
1675
940
return dbus.String(self.name)
1676
941
1677
# Fingerprint - property
1678
@dbus_annotations(
1679
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1680
@dbus_service_property(_interface, signature="s", access="read")
1681
def Fingerprint_dbus_property(self):
942
# fingerprint - property
943
@dbus_service_property(_interface, signature=u"s", access=u"read")
944
def fingerprint_dbus_property(self):
1682
945
return dbus.String(self.fingerprint)
1683
946
1684
# Host - property
1685
@dbus_service_property(_interface,
1686
signature="s",
1687
access="readwrite")
1688
def Host_dbus_property(self, value=None):
947
# host - property
948
@dbus_service_property(_interface, signature=u"s",
949
access=u"readwrite")
950
def host_dbus_property(self, value=None):
1689
951
if value is None: # get
1690
952
return dbus.String(self.host)
1691
self.host = str(value)
1692
1693
# Created - property
1694
@dbus_annotations(
1695
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1696
@dbus_service_property(_interface, signature="s", access="read")
1697
def Created_dbus_property(self):
1698
return datetime_to_dbus(self.created)
1699
1700
# LastEnabled - property
1701
@dbus_service_property(_interface, signature="s", access="read")
1702
def LastEnabled_dbus_property(self):
1703
return datetime_to_dbus(self.last_enabled)
1704
1705
# Enabled - property
1706
@dbus_service_property(_interface,
1707
signature="b",
1708
access="readwrite")
1709
def Enabled_dbus_property(self, value=None):
953
self.host = value
954
# Emit D-Bus signal
955
self.PropertyChanged(dbus.String(u"host"),
956
dbus.String(value, variant_level=1))
957
958
# created - property
959
@dbus_service_property(_interface, signature=u"s", access=u"read")
960
def created_dbus_property(self):
961
return dbus.String(self._datetime_to_dbus(self.created))
962
963
# last_enabled - property
964
@dbus_service_property(_interface, signature=u"s", access=u"read")
965
def last_enabled_dbus_property(self):
966
if self.last_enabled is None:
967
return dbus.String(u"")
968
return dbus.String(self._datetime_to_dbus(self.last_enabled))
969
970
# enabled - property
971
@dbus_service_property(_interface, signature=u"b",
972
access=u"readwrite")
973
def enabled_dbus_property(self, value=None):
1710
974
if value is None: # get
1711
975
return dbus.Boolean(self.enabled)
1712
976
if value:
1714
978
else:
1715
979
self.disable()
1716
980
1717
# LastCheckedOK - property
1718
@dbus_service_property(_interface,
1719
signature="s",
1720
access="readwrite")
1721
def LastCheckedOK_dbus_property(self, value=None):
981
# last_checked_ok - property
982
@dbus_service_property(_interface, signature=u"s",
983
access=u"readwrite")
984
def last_checked_ok_dbus_property(self, value=None):
1722
985
if value is not None:
1723
986
self.checked_ok()
1724
987
return
1725
return datetime_to_dbus(self.last_checked_ok)
1726
1727
# LastCheckerStatus - property
1728
@dbus_service_property(_interface, signature="n", access="read")
1729
def LastCheckerStatus_dbus_property(self):
1730
return dbus.Int16(self.last_checker_status)
1731
1732
# Expires - property
1733
@dbus_service_property(_interface, signature="s", access="read")
1734
def Expires_dbus_property(self):
1735
return datetime_to_dbus(self.expires)
1736
1737
# LastApprovalRequest - property
1738
@dbus_service_property(_interface, signature="s", access="read")
1739
def LastApprovalRequest_dbus_property(self):
1740
return datetime_to_dbus(self.last_approval_request)
1741
1742
# Timeout - property
1743
@dbus_service_property(_interface,
1744
signature="t",
1745
access="readwrite")
1746
def Timeout_dbus_property(self, value=None):
988
if self.last_checked_ok is None:
989
return dbus.String(u"")
990
return dbus.String(self._datetime_to_dbus(self
991
.last_checked_ok))
992
993
# timeout - property
994
@dbus_service_property(_interface, signature=u"t",
995
access=u"readwrite")
996
def timeout_dbus_property(self, value=None):
1747
997
if value is None: # get
1748
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1749
old_timeout = self.timeout
998
return dbus.UInt64(self.timeout_milliseconds())
1750
999
self.timeout = datetime.timedelta(0, 0, 0, value)
1751
# Reschedule disabling
1752
if self.enabled:
1753
now = datetime.datetime.utcnow()
1754
self.expires += self.timeout - old_timeout
1755
if self.expires <= now:
1756
# The timeout has passed
1757
self.disable()
1758
else:
1759
if (getattr(self, "disable_initiator_tag", None)
1760
is None):
1761
return
1762
gobject.source_remove(self.disable_initiator_tag)
1763
self.disable_initiator_tag = gobject.timeout_add(
1764
int((self.expires - now).total_seconds() * 1000),
1765
self.disable)
1766
1767
# ExtendedTimeout - property
1768
@dbus_service_property(_interface,
1769
signature="t",
1770
access="readwrite")
1771
def ExtendedTimeout_dbus_property(self, value=None):
1772
if value is None: # get
1773
return dbus.UInt64(self.extended_timeout.total_seconds()
1774
* 1000)
1775
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1776
1777
# Interval - property
1778
@dbus_service_property(_interface,
1779
signature="t",
1780
access="readwrite")
1781
def Interval_dbus_property(self, value=None):
1782
if value is None: # get
1783
return dbus.UInt64(self.interval.total_seconds() * 1000)
1000
# Emit D-Bus signal
1001
self.PropertyChanged(dbus.String(u"timeout"),
1002
dbus.UInt64(value, variant_level=1))
1003
if getattr(self, u"disable_initiator_tag", None) is None:
1004
return
1005
# Reschedule timeout
1006
gobject.source_remove(self.disable_initiator_tag)
1007
self.disable_initiator_tag = None
1008
time_to_die = (self.
1009
_timedelta_to_milliseconds((self
1010
.last_checked_ok
1011
+ self.timeout)
1012
- datetime.datetime
1013
.utcnow()))
1014
if time_to_die <= 0:
1015
# The timeout has passed
1016
self.disable()
1017
else:
1018
self.disable_initiator_tag = (gobject.timeout_add
1019
(time_to_die, self.disable))
1020
1021
# interval - property
1022
@dbus_service_property(_interface, signature=u"t",
1023
access=u"readwrite")
1024
def interval_dbus_property(self, value=None):
1025
if value is None: # get
1026
return dbus.UInt64(self.interval_milliseconds())
1784
1027
self.interval = datetime.timedelta(0, 0, 0, value)
1785
if getattr(self, "checker_initiator_tag", None) is None:
1028
# Emit D-Bus signal
1029
self.PropertyChanged(dbus.String(u"interval"),
1030
dbus.UInt64(value, variant_level=1))
1031
if getattr(self, u"checker_initiator_tag", None) is None:
1786
1032
return
1787
if self.enabled:
1788
# Reschedule checker run
1789
gobject.source_remove(self.checker_initiator_tag)
1790
self.checker_initiator_tag = gobject.timeout_add(
1791
value, self.start_checker)
1792
self.start_checker() # Start one now, too
1793
1794
# Checker - property
1795
@dbus_service_property(_interface,
1796
signature="s",
1797
access="readwrite")
1798
def Checker_dbus_property(self, value=None):
1033
# Reschedule checker run
1034
gobject.source_remove(self.checker_initiator_tag)
1035
self.checker_initiator_tag = (gobject.timeout_add
1036
(value, self.start_checker))
1037
self.start_checker() # Start one now, too
1038
1039
# checker - property
1040
@dbus_service_property(_interface, signature=u"s",
1041
access=u"readwrite")
1042
def checker_dbus_property(self, value=None):
1799
1043
if value is None: # get
1800
1044
return dbus.String(self.checker_command)
1801
self.checker_command = str(value)
1045
self.checker_command = value
1046
# Emit D-Bus signal
1047
self.PropertyChanged(dbus.String(u"checker"),
1048
dbus.String(self.checker_command,
1049
variant_level=1))
1802
1050
1803
# CheckerRunning - property
1804
@dbus_service_property(_interface,
1805
signature="b",
1806
access="readwrite")
1807
def CheckerRunning_dbus_property(self, value=None):
1051
# checker_running - property
1052
@dbus_service_property(_interface, signature=u"b",
1053
access=u"readwrite")
1054
def checker_running_dbus_property(self, value=None):
1808
1055
if value is None: # get
1809
1056
return dbus.Boolean(self.checker is not None)
1810
1057
if value:
1812
1059
else:
1813
1060
self.stop_checker()
1814
1061
1815
# ObjectPath - property
1816
@dbus_annotations(
1817
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
1818
"org.freedesktop.DBus.Deprecated": "true"})
1819
@dbus_service_property(_interface, signature="o", access="read")
1820
def ObjectPath_dbus_property(self):
1062
# object_path - property
1063
@dbus_service_property(_interface, signature=u"o", access=u"read")
1064
def object_path_dbus_property(self):
1821
1065
return self.dbus_object_path # is already a dbus.ObjectPath
1822
1066
1823
# Secret = property
1824
@dbus_annotations(
1825
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1826
"invalidates"})
1827
@dbus_service_property(_interface,
1828
signature="ay",
1829
access="write",
1830
byte_arrays=True)
1831
def Secret_dbus_property(self, value):
1832
self.secret = bytes(value)
1067
# secret = property
1068
@dbus_service_property(_interface, signature=u"ay",
1069
access=u"write", byte_arrays=True)
1070
def secret_dbus_property(self, value):
1071
self.secret = str(value)
1833
1072
1834
1073
del _interface
1835
1074
1839
1078
self._pipe = child_pipe
1840
1079
self._pipe.send(('init', fpr, address))
1841
1080
if not self._pipe.recv():
1842
raise KeyError(fpr)
1843
1081
raise KeyError()
1082
1844
1083
def __getattribute__(self, name):
1845
if name == '_pipe':
1084
if(name == '_pipe'):
1846
1085
return super(ProxyClient, self).__getattribute__(name)
1847
1086
self._pipe.send(('getattr', name))
1848
1087
data = self._pipe.recv()
1849
1088
if data[0] == 'data':
1850
1089
return data[1]
1851
1090
if data[0] == 'function':
1852
1853
1091
def func(*args, **kwargs):
1854
1092
self._pipe.send(('funcall', name, args, kwargs))
1855
1093
return self._pipe.recv()[1]
1856
1857
1094
return func
1858
1095
1859
1096
def __setattr__(self, name, value):
1860
if name == '_pipe':
1097
if(name == '_pipe'):
1861
1098
return super(ProxyClient, self).__setattr__(name, value)
1862
1099
self._pipe.send(('setattr', name, value))
1863
1100
1870
1107
1871
1108
def handle(self):
1872
1109
with contextlib.closing(self.server.child_pipe) as child_pipe:
1873
logger.info("TCP connection from: %s",
1874
str(self.client_address))
1875
logger.debug("Pipe FD: %d",
1110
logger.info(u"TCP connection from: %s",
1111
unicode(self.client_address))
1112
logger.debug(u"Pipe FD: %d",
1876
1113
self.server.child_pipe.fileno())
1877
1878
session = gnutls.connection.ClientSession(
1879
self.request, gnutls.connection .X509Credentials())
1880
1114
1115
session = (gnutls.connection
1116
.ClientSession(self.request,
1117
gnutls.connection
1118
.X509Credentials()))
1119
1881
1120
# Note: gnutls.connection.X509Credentials is really a
1882
1121
# generic GnuTLS certificate credentials object so long as
1883
1122
# no X.509 keys are added to it. Therefore, we can use it
1884
1123
# here despite using OpenPGP certificates.
1885
1886
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1887
# "+AES-256-CBC", "+SHA1",
1888
# "+COMP-NULL", "+CTYPE-OPENPGP",
1889
# "+DHE-DSS"))
1124
1125
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1126
# u"+AES-256-CBC", u"+SHA1",
1127
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1128
# u"+DHE-DSS"))
1890
1129
# Use a fallback default, since this MUST be set.
1891
1130
priority = self.server.gnutls_priority
1892
1131
if priority is None:
1893
priority = "NORMAL"
1894
gnutls.library.functions.gnutls_priority_set_direct(
1895
session._c_object, priority, None)
1896
1132
priority = u"NORMAL"
1133
(gnutls.library.functions
1134
.gnutls_priority_set_direct(session._c_object,
1135
priority, None))
1136
1897
1137
# Start communication using the Mandos protocol
1898
1138
# Get protocol number
1899
1139
line = self.request.makefile().readline()
1900
logger.debug("Protocol version: %r", line)
1140
logger.debug(u"Protocol version: %r", line)
1901
1141
try:
1902
1142
if int(line.strip().split()[0]) > 1:
1903
raise RuntimeError(line)
1904
except (ValueError, IndexError, RuntimeError) as error:
1905
logger.error("Unknown protocol version: %s", error)
1143
raise RuntimeError
1144
except (ValueError, IndexError, RuntimeError), error:
1145
logger.error(u"Unknown protocol version: %s", error)
1906
1146
return
1907
1147
1908
1148
# Start GnuTLS connection
1909
1149
try:
1910
1150
session.handshake()
1911
except gnutls.errors.GNUTLSError as error:
1912
logger.warning("Handshake failed: %s", error)
1151
except gnutls.errors.GNUTLSError, error:
1152
logger.warning(u"Handshake failed: %s", error)
1913
1153
# Do not run session.bye() here: the session is not
1914
1154
# established. Just abandon the request.
1915
1155
return
1916
logger.debug("Handshake succeeded")
1917
1156
logger.debug(u"Handshake succeeded")
1157
1918
1158
approval_required = False
1919
1159
try:
1920
1160
try:
1921
fpr = self.fingerprint(
1922
self.peer_certificate(session))
1923
except (TypeError,
1924
gnutls.errors.GNUTLSError) as error:
1925
logger.warning("Bad certificate: %s", error)
1161
fpr = self.fingerprint(self.peer_certificate
1162
(session))
1163
except (TypeError, gnutls.errors.GNUTLSError), error:
1164
logger.warning(u"Bad certificate: %s", error)
1926
1165
return
1927
logger.debug("Fingerprint: %s", fpr)
1928
1166
logger.debug(u"Fingerprint: %s", fpr)
1167
1929
1168
try:
1930
1169
client = ProxyClient(child_pipe, fpr,
1931
1170
self.client_address)
1932
1171
except KeyError:
1933
1172
return
1934
1173
1935
if client.approval_delay:
1936
delay = client.approval_delay
1174
if client.approved_delay:
1175
delay = client.approved_delay
1937
1176
client.approvals_pending += 1
1938
1177
approval_required = True
1939
1178
1940
1179
while True:
1941
1180
if not client.enabled:
1942
logger.info("Client %s is disabled",
1943
client.name)
1181
logger.warning(u"Client %s is disabled",
1182
client.name)
1944
1183
if self.server.use_dbus:
1945
1184
# Emit D-Bus signal
1946
client.Rejected("Disabled")
1185
client.Rejected("Disabled")
1947
1186
return
1948
1187
1949
if client.approved or not client.approval_delay:
1188
if client._approved or not client.approved_delay:
1950
1189
#We are approved or approval is disabled
1951
1190
break
1952
elif client.approved is None:
1953
logger.info("Client %s needs approval",
1191
elif client._approved is None:
1192
logger.info(u"Client %s need approval",
1954
1193
client.name)
1955
1194
if self.server.use_dbus:
1956
1195
# Emit D-Bus signal
1957
1196
client.NeedApproval(
1958
client.approval_delay.total_seconds()
1959
* 1000, client.approved_by_default)
1197
client.approved_delay_milliseconds(),
1198
client.approved_by_default)
1960
1199
else:
1961
logger.warning("Client %s was not approved",
1200
logger.warning(u"Client %s was not approved",
1962
1201
client.name)
1963
1202
if self.server.use_dbus:
1964
1203
# Emit D-Bus signal
1965
client.Rejected("Denied")
1204
client.Rejected("Disapproved")
1966
1205
return
1967
1206
1968
1207
#wait until timeout or approved
1208
#x = float(client._timedelta_to_milliseconds(delay))
1969
1209
time = datetime.datetime.now()
1970
1210
client.changedstate.acquire()
1971
client.changedstate.wait(delay.total_seconds())
1211
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1972
1212
client.changedstate.release()
1973
1213
time2 = datetime.datetime.now()
1974
1214
if (time2 - time) >= delay:
1978
1218
client.name)
1979
1219
if self.server.use_dbus:
1980
1220
# Emit D-Bus signal
1981
client.Rejected("Approval timed out")
1221
client.Rejected("Time out")
1982
1222
return
1983
1223
else:
1984
1224
break
1987
1227
1988
1228
sent_size = 0
1989
1229
while sent_size < len(client.secret):
1990
try:
1991
sent = session.send(client.secret[sent_size:])
1992
except gnutls.errors.GNUTLSError as error:
1993
logger.warning("gnutls send failed",
1994
exc_info=error)
1995
return
1996
logger.debug("Sent: %d, remaining: %d", sent,
1997
len(client.secret) - (sent_size
1998
+ sent))
1230
# XXX handle session exception
1231
sent = session.send(client.secret[sent_size:])
1232
logger.debug(u"Sent: %d, remaining: %d",
1233
sent, len(client.secret)
1234
- (sent_size + sent))
1999
1235
sent_size += sent
2000
2001
logger.info("Sending secret to %s", client.name)
2002
# bump the timeout using extended_timeout
2003
client.bump_timeout(client.extended_timeout)
1236
1237
logger.info(u"Sending secret to %s", client.name)
1238
# bump the timeout as if seen
1239
client.checked_ok()
2004
1240
if self.server.use_dbus:
2005
1241
# Emit D-Bus signal
2006
1242
client.GotSecret()
2008
1244
finally:
2009
1245
if approval_required:
2010
1246
client.approvals_pending -= 1
2011
try:
2012
session.bye()
2013
except gnutls.errors.GNUTLSError as error:
2014
logger.warning("GnuTLS bye failed",
2015
exc_info=error)
1247
session.bye()
2016
1248
2017
1249
@staticmethod
2018
1250
def peer_certificate(session):
2019
1251
"Return the peer's OpenPGP certificate as a bytestring"
2020
1252
# If not an OpenPGP certificate...
2021
if (gnutls.library.functions.gnutls_certificate_type_get(
2022
session._c_object)
1253
if (gnutls.library.functions
1254
.gnutls_certificate_type_get(session._c_object)
2023
1255
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
2024
1256
# ...do the normal thing
2025
1257
return session.peer_certificate
2028
1260
.gnutls_certificate_get_peers
2029
1261
(session._c_object, ctypes.byref(list_size)))
2030
1262
if not bool(cert_list) and list_size.value != 0:
2031
raise gnutls.errors.GNUTLSError("error getting peer"
2032
" certificate")
1263
raise gnutls.errors.GNUTLSError(u"error getting peer"
1264
u" certificate")
2033
1265
if list_size.value == 0:
2034
1266
return None
2035
1267
cert = cert_list[0]
2039
1271
def fingerprint(openpgp):
2040
1272
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2041
1273
# New GnuTLS "datum" with the OpenPGP public key
2042
datum = gnutls.library.types.gnutls_datum_t(
2043
ctypes.cast(ctypes.c_char_p(openpgp),
2044
ctypes.POINTER(ctypes.c_ubyte)),
2045
ctypes.c_uint(len(openpgp)))
1274
datum = (gnutls.library.types
1275
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1276
ctypes.POINTER
1277
(ctypes.c_ubyte)),
1278
ctypes.c_uint(len(openpgp))))
2046
1279
# New empty GnuTLS certificate
2047
1280
crt = gnutls.library.types.gnutls_openpgp_crt_t()
2048
gnutls.library.functions.gnutls_openpgp_crt_init(
2049
ctypes.byref(crt))
1281
(gnutls.library.functions
1282
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2050
1283
# Import the OpenPGP public key into the certificate
2051
gnutls.library.functions.gnutls_openpgp_crt_import(
2052
crt, ctypes.byref(datum),
2053
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1284
(gnutls.library.functions
1285
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1286
gnutls.library.constants
1287
.GNUTLS_OPENPGP_FMT_RAW))
2054
1288
# Verify the self signature in the key
2055
1289
crtverify = ctypes.c_uint()
2056
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2057
crt, 0, ctypes.byref(crtverify))
1290
(gnutls.library.functions
1291
.gnutls_openpgp_crt_verify_self(crt, 0,
1292
ctypes.byref(crtverify)))
2058
1293
if crtverify.value != 0:
2059
1294
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2060
raise gnutls.errors.CertificateSecurityError(
2061
"Verify failed")
1295
raise (gnutls.errors.CertificateSecurityError
1296
(u"Verify failed"))
2062
1297
# New buffer for the fingerprint
2063
1298
buf = ctypes.create_string_buffer(20)
2064
1299
buf_len = ctypes.c_size_t()
2065
1300
# Get the fingerprint from the certificate into the buffer
2066
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2067
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1301
(gnutls.library.functions
1302
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1303
ctypes.byref(buf_len)))
2068
1304
# Deinit the certificate
2069
1305
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2070
1306
# Convert the buffer to a Python bytestring
2071
1307
fpr = ctypes.string_at(buf, buf_len.value)
2072
1308
# Convert the bytestring to hexadecimal notation
2073
hex_fpr = binascii.hexlify(fpr).upper()
1309
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2074
1310
return hex_fpr
2075
1311
2076
1312
2077
1313
class MultiprocessingMixIn(object):
2078
1314
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2079
2080
1315
def sub_process_main(self, request, address):
2081
1316
try:
2082
1317
self.finish_request(request, address)
2083
except Exception:
1318
except:
2084
1319
self.handle_error(request, address)
2085
1320
self.close_request(request)
2086
1321
2087
1322
def process_request(self, request, address):
2088
1323
"""Start a new process to process the request."""
2089
proc = multiprocessing.Process(target = self.sub_process_main,
2090
args = (request, address))
2091
proc.start()
2092
return proc
2093
1324
multiprocessing.Process(target = self.sub_process_main,
1325
args = (request, address)).start()
2094
1326
2095
1327
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2096
1328
""" adds a pipe to the MixIn """
2097
2098
1329
def process_request(self, request, client_address):
2099
1330
"""Overrides and wraps the original process_request().
2100
1331
2101
1332
This function creates a new pipe in self.pipe
2102
1333
"""
2103
1334
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2104
2105
proc = MultiprocessingMixIn.process_request(self, request,
2106
client_address)
2107
self.child_pipe.close()
2108
self.add_pipe(parent_pipe, proc)
2109
2110
def add_pipe(self, parent_pipe, proc):
1335
1336
super(MultiprocessingMixInWithPipe,
1337
self).process_request(request, client_address)
1338
self.add_pipe(parent_pipe)
1339
def add_pipe(self, parent_pipe):
2111
1340
"""Dummy function; override as necessary"""
2112
raise NotImplementedError()
2113
1341
pass
2114
1342
2115
1343
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2116
1344
socketserver.TCPServer, object):
2121
1349
interface: None or a network interface name (string)
2122
1350
use_ipv6: Boolean; to use IPv6 or not
2123
1351
"""
2124
2125
1352
def __init__(self, server_address, RequestHandlerClass,
2126
interface=None,
2127
use_ipv6=True,
2128
socketfd=None):
2129
"""If socketfd is set, use that file descriptor instead of
2130
creating a new one with socket.socket().
2131
"""
1353
interface=None, use_ipv6=True):
2132
1354
self.interface = interface
2133
1355
if use_ipv6:
2134
1356
self.address_family = socket.AF_INET6
2135
if socketfd is not None:
2136
# Save the file descriptor
2137
self.socketfd = socketfd
2138
# Save the original socket.socket() function
2139
self.socket_socket = socket.socket
2140
# To implement --socket, we monkey patch socket.socket.
2141
#
2142
# (When socketserver.TCPServer is a new-style class, we
2143
# could make self.socket into a property instead of monkey
2144
# patching socket.socket.)
2145
#
2146
# Create a one-time-only replacement for socket.socket()
2147
@functools.wraps(socket.socket)
2148
def socket_wrapper(*args, **kwargs):
2149
# Restore original function so subsequent calls are
2150
# not affected.
2151
socket.socket = self.socket_socket
2152
del self.socket_socket
2153
# This time only, return a new socket object from the
2154
# saved file descriptor.
2155
return socket.fromfd(self.socketfd, *args, **kwargs)
2156
# Replace socket.socket() function with wrapper
2157
socket.socket = socket_wrapper
2158
# The socketserver.TCPServer.__init__ will call
2159
# socket.socket(), which might be our replacement,
2160
# socket_wrapper(), if socketfd was set.
2161
1357
socketserver.TCPServer.__init__(self, server_address,
2162
1358
RequestHandlerClass)
2163
2164
1359
def server_bind(self):
2165
1360
"""This overrides the normal server_bind() function
2166
1361
to bind to an interface if one was specified, and also NOT to
2167
1362
bind to an address or port if they were not specified."""
2168
1363
if self.interface is not None:
2169
1364
if SO_BINDTODEVICE is None:
2170
logger.error("SO_BINDTODEVICE does not exist;"
2171
" cannot bind to interface %s",
1365
logger.error(u"SO_BINDTODEVICE does not exist;"
1366
u" cannot bind to interface %s",
2172
1367
self.interface)
2173
1368
else:
2174
1369
try:
2175
self.socket.setsockopt(
2176
socket.SOL_SOCKET, SO_BINDTODEVICE,
2177
(self.interface + "\0").encode("utf-8"))
2178
except socket.error as error:
2179
if error.errno == errno.EPERM:
2180
logger.error("No permission to bind to"
2181
" interface %s", self.interface)
2182
elif error.errno == errno.ENOPROTOOPT:
2183
logger.error("SO_BINDTODEVICE not available;"
2184
" cannot bind to interface %s",
2185
self.interface)
2186
elif error.errno == errno.ENODEV:
2187
logger.error("Interface %s does not exist,"
2188
" cannot bind", self.interface)
1370
self.socket.setsockopt(socket.SOL_SOCKET,
1371
SO_BINDTODEVICE,
1372
str(self.interface
1373
+ u'\0'))
1374
except socket.error, error:
1375
if error[0] == errno.EPERM:
1376
logger.error(u"No permission to"
1377
u" bind to interface %s",
1378
self.interface)
1379
elif error[0] == errno.ENOPROTOOPT:
1380
logger.error(u"SO_BINDTODEVICE not available;"
1381
u" cannot bind to interface %s",
1382
self.interface)
2189
1383
else:
2190
1384
raise
2191
1385
# Only bind(2) the socket if we really need to.
2192
1386
if self.server_address[0] or self.server_address[1]:
2193
1387
if not self.server_address[0]:
2194
1388
if self.address_family == socket.AF_INET6:
2195
any_address = "::" # in6addr_any
1389
any_address = u"::" # in6addr_any
2196
1390
else:
2197
any_address = "0.0.0.0" # INADDR_ANY
1391
any_address = socket.INADDR_ANY
2198
1392
self.server_address = (any_address,
2199
1393
self.server_address[1])
2200
1394
elif not self.server_address[1]:
2201
self.server_address = (self.server_address[0], 0)
1395
self.server_address = (self.server_address[0],
1396
0)
2202
1397
# if self.interface:
2203
1398
# self.server_address = (self.server_address[0],
2204
1399
# 0, # port
2218
1413
2219
1414
Assumes a gobject.MainLoop event loop.
2220
1415
"""
2221
2222
1416
def __init__(self, server_address, RequestHandlerClass,
2223
interface=None,
2224
use_ipv6=True,
2225
clients=None,
2226
gnutls_priority=None,
2227
use_dbus=True,
2228
socketfd=None):
1417
interface=None, use_ipv6=True, clients=None,
1418
gnutls_priority=None, use_dbus=True):
2229
1419
self.enabled = False
2230
1420
self.clients = clients
2231
1421
if self.clients is None:
2232
self.clients = {}
1422
self.clients = set()
2233
1423
self.use_dbus = use_dbus
2234
1424
self.gnutls_priority = gnutls_priority
2235
1425
IPv6_TCPServer.__init__(self, server_address,
2236
1426
RequestHandlerClass,
2237
1427
interface = interface,
2238
use_ipv6 = use_ipv6,
2239
socketfd = socketfd)
2240
1428
use_ipv6 = use_ipv6)
2241
1429
def server_activate(self):
2242
1430
if self.enabled:
2243
1431
return socketserver.TCPServer.server_activate(self)
2244
2245
1432
def enable(self):
2246
1433
self.enabled = True
2247
2248
def add_pipe(self, parent_pipe, proc):
1434
def add_pipe(self, parent_pipe):
2249
1435
# Call "handle_ipc" for both data and EOF events
2250
gobject.io_add_watch(
2251
parent_pipe.fileno(),
2252
gobject.IO_IN | gobject.IO_HUP,
2253
functools.partial(self.handle_ipc,
2254
parent_pipe = parent_pipe,
2255
proc = proc))
2256
2257
def handle_ipc(self, source, condition,
2258
parent_pipe=None,
2259
proc = None,
1436
gobject.io_add_watch(parent_pipe.fileno(),
1437
gobject.IO_IN | gobject.IO_HUP,
1438
functools.partial(self.handle_ipc,
1439
parent_pipe = parent_pipe))
1440
1441
def handle_ipc(self, source, condition, parent_pipe=None,
2260
1442
client_object=None):
2261
# error, or the other end of multiprocessing.Pipe has closed
2262
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2263
# Wait for other process to exit
2264
proc.join()
2265
return False
1443
condition_names = {
1444
gobject.IO_IN: u"IN", # There is data to read.
1445
gobject.IO_OUT: u"OUT", # Data can be written (without
1446
# blocking).
1447
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1448
gobject.IO_ERR: u"ERR", # Error condition.
1449
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1450
# broken, usually for pipes and
1451
# sockets).
1452
}
1453
conditions_string = ' | '.join(name
1454
for cond, name in
1455
condition_names.iteritems()
1456
if cond & condition)
1457
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1458
conditions_string)
2266
1459
2267
1460
# Read a request from the child
2268
1461
request = parent_pipe.recv()
2272
1465
fpr = request[1]
2273
1466
address = request[2]
2274
1467
2275
for c in self.clients.itervalues():
1468
for c in self.clients:
2276
1469
if c.fingerprint == fpr:
2277
1470
client = c
2278
1471
break
2279
1472
else:
2280
logger.info("Client not found for fingerprint: %s, ad"
2281
"dress: %s", fpr, address)
1473
logger.warning(u"Client not found for fingerprint: %s, ad"
1474
u"dress: %s", fpr, address)
2282
1475
if self.use_dbus:
2283
1476
# Emit D-Bus signal
2284
mandos_dbus_service.ClientNotFound(fpr,
2285
address[0])
1477
mandos_dbus_service.ClientNotFound(fpr, address)
2286
1478
parent_pipe.send(False)
2287
1479
return False
2288
1480
2289
gobject.io_add_watch(
2290
parent_pipe.fileno(),
2291
gobject.IO_IN | gobject.IO_HUP,
2292
functools.partial(self.handle_ipc,
2293
parent_pipe = parent_pipe,
2294
proc = proc,
2295
client_object = client))
1481
gobject.io_add_watch(parent_pipe.fileno(),
1482
gobject.IO_IN | gobject.IO_HUP,
1483
functools.partial(self.handle_ipc,
1484
parent_pipe = parent_pipe,
1485
client_object = client))
2296
1486
parent_pipe.send(True)
2297
# remove the old hook in favor of the new above hook on
2298
# same fileno
1487
# remove the old hook in favor of the new above hook on same fileno
2299
1488
return False
2300
1489
if command == 'funcall':
2301
1490
funcname = request[1]
2302
1491
args = request[2]
2303
1492
kwargs = request[3]
2304
1493
2305
parent_pipe.send(('data', getattr(client_object,
2306
funcname)(*args,
2307
**kwargs)))
2308
1494
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1495
2309
1496
if command == 'getattr':
2310
1497
attrname = request[1]
2311
if isinstance(client_object.__getattribute__(attrname),
2312
collections.Callable):
2313
parent_pipe.send(('function', ))
1498
if callable(client_object.__getattribute__(attrname)):
1499
parent_pipe.send(('function',))
2314
1500
else:
2315
parent_pipe.send((
2316
'data', client_object.__getattribute__(attrname)))
1501
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2317
1502
2318
1503
if command == 'setattr':
2319
1504
attrname = request[1]
2323
1508
return True
2324
1509
2325
1510
2326
def rfc3339_duration_to_delta(duration):
2327
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2328
2329
>>> rfc3339_duration_to_delta("P7D")
2330
datetime.timedelta(7)
2331
>>> rfc3339_duration_to_delta("PT60S")
2332
datetime.timedelta(0, 60)
2333
>>> rfc3339_duration_to_delta("PT60M")
2334
datetime.timedelta(0, 3600)
2335
>>> rfc3339_duration_to_delta("PT24H")
2336
datetime.timedelta(1)
2337
>>> rfc3339_duration_to_delta("P1W")
2338
datetime.timedelta(7)
2339
>>> rfc3339_duration_to_delta("PT5M30S")
2340
datetime.timedelta(0, 330)
2341
>>> rfc3339_duration_to_delta("P1DT3M20S")
2342
datetime.timedelta(1, 200)
2343
"""
2344
2345
# Parsing an RFC 3339 duration with regular expressions is not
2346
# possible - there would have to be multiple places for the same
2347
# values, like seconds. The current code, while more esoteric, is
2348
# cleaner without depending on a parsing library. If Python had a
2349
# built-in library for parsing we would use it, but we'd like to
2350
# avoid excessive use of external libraries.
2351
2352
# New type for defining tokens, syntax, and semantics all-in-one
2353
Token = collections.namedtuple("Token", (
2354
"regexp", # To match token; if "value" is not None, must have
2355
# a "group" containing digits
2356
"value", # datetime.timedelta or None
2357
"followers")) # Tokens valid after this token
2358
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2359
# the "duration" ABNF definition in RFC 3339, Appendix A.
2360
token_end = Token(re.compile(r"$"), None, frozenset())
2361
token_second = Token(re.compile(r"(\d+)S"),
2362
datetime.timedelta(seconds=1),
2363
frozenset((token_end, )))
2364
token_minute = Token(re.compile(r"(\d+)M"),
2365
datetime.timedelta(minutes=1),
2366
frozenset((token_second, token_end)))
2367
token_hour = Token(re.compile(r"(\d+)H"),
2368
datetime.timedelta(hours=1),
2369
frozenset((token_minute, token_end)))
2370
token_time = Token(re.compile(r"T"),
2371
None,
2372
frozenset((token_hour, token_minute,
2373
token_second)))
2374
token_day = Token(re.compile(r"(\d+)D"),
2375
datetime.timedelta(days=1),
2376
frozenset((token_time, token_end)))
2377
token_month = Token(re.compile(r"(\d+)M"),
2378
datetime.timedelta(weeks=4),
2379
frozenset((token_day, token_end)))
2380
token_year = Token(re.compile(r"(\d+)Y"),
2381
datetime.timedelta(weeks=52),
2382
frozenset((token_month, token_end)))
2383
token_week = Token(re.compile(r"(\d+)W"),
2384
datetime.timedelta(weeks=1),
2385
frozenset((token_end, )))
2386
token_duration = Token(re.compile(r"P"), None,
2387
frozenset((token_year, token_month,
2388
token_day, token_time,
2389
token_week)))
2390
# Define starting values
2391
value = datetime.timedelta() # Value so far
2392
found_token = None
2393
followers = frozenset((token_duration, )) # Following valid tokens
2394
s = duration # String left to parse
2395
# Loop until end token is found
2396
while found_token is not token_end:
2397
# Search for any currently valid tokens
2398
for token in followers:
2399
match = token.regexp.match(s)
2400
if match is not None:
2401
# Token found
2402
if token.value is not None:
2403
# Value found, parse digits
2404
factor = int(match.group(1), 10)
2405
# Add to value so far
2406
value += factor * token.value
2407
# Strip token from string
2408
s = token.regexp.sub("", s, 1)
2409
# Go to found token
2410
found_token = token
2411
# Set valid next tokens
2412
followers = found_token.followers
2413
break
2414
else:
2415
# No currently valid tokens were found
2416
raise ValueError("Invalid RFC 3339 duration: {!r}"
2417
.format(duration))
2418
# End token found
2419
return value
2420
2421
2422
1511
def string_to_delta(interval):
2423
1512
"""Parse a string and return a datetime.timedelta
2424
1513
2425
>>> string_to_delta('7d')
1514
>>> string_to_delta(u'7d')
2426
1515
datetime.timedelta(7)
2427
>>> string_to_delta('60s')
1516
>>> string_to_delta(u'60s')
2428
1517
datetime.timedelta(0, 60)
2429
>>> string_to_delta('60m')
1518
>>> string_to_delta(u'60m')
2430
1519
datetime.timedelta(0, 3600)
2431
>>> string_to_delta('24h')
1520
>>> string_to_delta(u'24h')
2432
1521
datetime.timedelta(1)
2433
>>> string_to_delta('1w')
1522
>>> string_to_delta(u'1w')
2434
1523
datetime.timedelta(7)
2435
>>> string_to_delta('5m 30s')
1524
>>> string_to_delta(u'5m 30s')
2436
1525
datetime.timedelta(0, 330)
2437
1526
"""
2438
2439
try:
2440
return rfc3339_duration_to_delta(interval)
2441
except ValueError:
2442
pass
2443
2444
1527
timevalue = datetime.timedelta(0)
2445
1528
for s in interval.split():
2446
1529
try:
2447
suffix = s[-1]
1530
suffix = unicode(s[-1])
2448
1531
value = int(s[:-1])
2449
if suffix == "d":
1532
if suffix == u"d":
2450
1533
delta = datetime.timedelta(value)
2451
elif suffix == "s":
1534
elif suffix == u"s":
2452
1535
delta = datetime.timedelta(0, value)
2453
elif suffix == "m":
1536
elif suffix == u"m":
2454
1537
delta = datetime.timedelta(0, 0, 0, 0, value)
2455
elif suffix == "h":
1538
elif suffix == u"h":
2456
1539
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2457
elif suffix == "w":
1540
elif suffix == u"w":
2458
1541
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2459
1542
else:
2460
raise ValueError("Unknown suffix {!r}".format(suffix))
2461
except IndexError as e:
2462
raise ValueError(*(e.args))
1543
raise ValueError(u"Unknown suffix %r" % suffix)
1544
except (ValueError, IndexError), e:
1545
raise ValueError(e.message)
2463
1546
timevalue += delta
2464
1547
return timevalue
2465
1548
2466
1549
1550
def if_nametoindex(interface):
1551
"""Call the C function if_nametoindex(), or equivalent
1552
1553
Note: This function cannot accept a unicode string."""
1554
global if_nametoindex
1555
try:
1556
if_nametoindex = (ctypes.cdll.LoadLibrary
1557
(ctypes.util.find_library(u"c"))
1558
.if_nametoindex)
1559
except (OSError, AttributeError):
1560
logger.warning(u"Doing if_nametoindex the hard way")
1561
def if_nametoindex(interface):
1562
"Get an interface index the hard way, i.e. using fcntl()"
1563
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1564
with contextlib.closing(socket.socket()) as s:
1565
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1566
struct.pack(str(u"16s16x"),
1567
interface))
1568
interface_index = struct.unpack(str(u"I"),
1569
ifreq[16:20])[0]
1570
return interface_index
1571
return if_nametoindex(interface)
1572
1573
2467
1574
def daemon(nochdir = False, noclose = False):
2468
1575
"""See daemon(3). Standard BSD Unix function.
2469
1576
2472
1579
sys.exit()
2473
1580
os.setsid()
2474
1581
if not nochdir:
2475
os.chdir("/")
1582
os.chdir(u"/")
2476
1583
if os.fork():
2477
1584
sys.exit()
2478
1585
if not noclose:
2479
1586
# Close all standard open file descriptors
2480
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1587
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2481
1588
if not stat.S_ISCHR(os.fstat(null).st_mode):
2482
1589
raise OSError(errno.ENODEV,
2483
"{} not a character device"
2484
.format(os.devnull))
1590
u"%s not a character device"
1591
% os.path.devnull)
2485
1592
os.dup2(null, sys.stdin.fileno())
2486
1593
os.dup2(null, sys.stdout.fileno())
2487
1594
os.dup2(null, sys.stderr.fileno())
2494
1601
##################################################################
2495
1602
# Parsing of options, both command line and config file
2496
1603
2497
parser = argparse.ArgumentParser()
2498
parser.add_argument("-v", "--version", action="version",
2499
version = "%(prog)s {}".format(version),
2500
help="show version number and exit")
2501
parser.add_argument("-i", "--interface", metavar="IF",
2502
help="Bind to interface IF")
2503
parser.add_argument("-a", "--address",
2504
help="Address to listen for requests on")
2505
parser.add_argument("-p", "--port", type=int,
2506
help="Port number to receive requests on")
2507
parser.add_argument("--check", action="store_true",
2508
help="Run self-test")
2509
parser.add_argument("--debug", action="store_true",
2510
help="Debug mode; run in foreground and log"
2511
" to terminal", default=None)
2512
parser.add_argument("--debuglevel", metavar="LEVEL",
2513
help="Debug level for stdout output")
2514
parser.add_argument("--priority", help="GnuTLS"
2515
" priority string (see GnuTLS documentation)")
2516
parser.add_argument("--servicename",
2517
metavar="NAME", help="Zeroconf service name")
2518
parser.add_argument("--configdir",
2519
default="/etc/mandos", metavar="DIR",
2520
help="Directory to search for configuration"
2521
" files")
2522
parser.add_argument("--no-dbus", action="store_false",
2523
dest="use_dbus", help="Do not provide D-Bus"
2524
" system bus interface", default=None)
2525
parser.add_argument("--no-ipv6", action="store_false",
2526
dest="use_ipv6", help="Do not use IPv6",
2527
default=None)
2528
parser.add_argument("--no-restore", action="store_false",
2529
dest="restore", help="Do not restore stored"
2530
" state", default=None)
2531
parser.add_argument("--socket", type=int,
2532
help="Specify a file descriptor to a network"
2533
" socket to use instead of creating one")
2534
parser.add_argument("--statedir", metavar="DIR",
2535
help="Directory to save/restore state in")
2536
parser.add_argument("--foreground", action="store_true",
2537
help="Run in foreground", default=None)
2538
parser.add_argument("--no-zeroconf", action="store_false",
2539
dest="zeroconf", help="Do not use Zeroconf",
2540
default=None)
2541
2542
options = parser.parse_args()
1604
parser = optparse.OptionParser(version = "%%prog %s" % version)
1605
parser.add_option("-i", u"--interface", type=u"string",
1606
metavar="IF", help=u"Bind to interface IF")
1607
parser.add_option("-a", u"--address", type=u"string",
1608
help=u"Address to listen for requests on")
1609
parser.add_option("-p", u"--port", type=u"int",
1610
help=u"Port number to receive requests on")
1611
parser.add_option("--check", action=u"store_true",
1612
help=u"Run self-test")
1613
parser.add_option("--debug", action=u"store_true",
1614
help=u"Debug mode; run in foreground and log to"
1615
u" terminal")
1616
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1617
u" priority string (see GnuTLS documentation)")
1618
parser.add_option("--servicename", type=u"string",
1619
metavar=u"NAME", help=u"Zeroconf service name")
1620
parser.add_option("--configdir", type=u"string",
1621
default=u"/etc/mandos", metavar=u"DIR",
1622
help=u"Directory to search for configuration"
1623
u" files")
1624
parser.add_option("--no-dbus", action=u"store_false",
1625
dest=u"use_dbus", help=u"Do not provide D-Bus"
1626
u" system bus interface")
1627
parser.add_option("--no-ipv6", action=u"store_false",
1628
dest=u"use_ipv6", help=u"Do not use IPv6")
1629
options = parser.parse_args()[0]
2543
1630
2544
1631
if options.check:
2545
1632
import doctest
2546
fail_count, test_count = doctest.testmod()
2547
sys.exit(os.EX_OK if fail_count == 0 else 1)
1633
doctest.testmod()
1634
sys.exit()
2548
1635
2549
1636
# Default values for config file for server-global settings
2550
server_defaults = { "interface": "",
2551
"address": "",
2552
"port": "",
2553
"debug": "False",
2554
"priority":
2555
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2556
":+SIGN-DSA-SHA256",
2557
"servicename": "Mandos",
2558
"use_dbus": "True",
2559
"use_ipv6": "True",
2560
"debuglevel": "",
2561
"restore": "True",
2562
"socket": "",
2563
"statedir": "/var/lib/mandos",
2564
"foreground": "False",
2565
"zeroconf": "True",
2566
}
1637
server_defaults = { u"interface": u"",
1638
u"address": u"",
1639
u"port": u"",
1640
u"debug": u"False",
1641
u"priority":
1642
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1643
u"servicename": u"Mandos",
1644
u"use_dbus": u"True",
1645
u"use_ipv6": u"True",
1646
}
2567
1647
2568
1648
# Parse config file for server-global settings
2569
1649
server_config = configparser.SafeConfigParser(server_defaults)
2570
1650
del server_defaults
2571
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1651
server_config.read(os.path.join(options.configdir,
1652
u"mandos.conf"))
2572
1653
# Convert the SafeConfigParser object to a dict
2573
1654
server_settings = server_config.defaults()
2574
1655
# Use the appropriate methods on the non-string config options
2575
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2576
server_settings[option] = server_config.getboolean("DEFAULT",
1656
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1657
server_settings[option] = server_config.getboolean(u"DEFAULT",
2577
1658
option)
2578
1659
if server_settings["port"]:
2579
server_settings["port"] = server_config.getint("DEFAULT",
2580
"port")
2581
if server_settings["socket"]:
2582
server_settings["socket"] = server_config.getint("DEFAULT",
2583
"socket")
2584
# Later, stdin will, and stdout and stderr might, be dup'ed
2585
# over with an opened os.devnull. But we don't want this to
2586
# happen with a supplied network socket.
2587
if 0 <= server_settings["socket"] <= 2:
2588
server_settings["socket"] = os.dup(server_settings
2589
["socket"])
1660
server_settings["port"] = server_config.getint(u"DEFAULT",
1661
u"port")
2590
1662
del server_config
2591
1663
2592
1664
# Override the settings from the config file with command line
2593
1665
# options, if set.
2594
for option in ("interface", "address", "port", "debug",
2595
"priority", "servicename", "configdir", "use_dbus",
2596
"use_ipv6", "debuglevel", "restore", "statedir",
2597
"socket", "foreground", "zeroconf"):
1666
for option in (u"interface", u"address", u"port", u"debug",
1667
u"priority", u"servicename", u"configdir",
1668
u"use_dbus", u"use_ipv6"):
2598
1669
value = getattr(options, option)
2599
1670
if value is not None:
2600
1671
server_settings[option] = value
2601
1672
del options
2602
1673
# Force all strings to be unicode
2603
1674
for option in server_settings.keys():
2604
if isinstance(server_settings[option], bytes):
2605
server_settings[option] = (server_settings[option]
2606
.decode("utf-8"))
2607
# Force all boolean options to be boolean
2608
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2609
"foreground", "zeroconf"):
2610
server_settings[option] = bool(server_settings[option])
2611
# Debug implies foreground
2612
if server_settings["debug"]:
2613
server_settings["foreground"] = True
1675
if type(server_settings[option]) is str:
1676
server_settings[option] = unicode(server_settings[option])
2614
1677
# Now we have our good server settings in "server_settings"
2615
1678
2616
1679
##################################################################
2617
1680
2618
if (not server_settings["zeroconf"]
2619
and not (server_settings["port"]
2620
or server_settings["socket"] != "")):
2621
parser.error("Needs port or socket to work without Zeroconf")
2622
2623
1681
# For convenience
2624
debug = server_settings["debug"]
2625
debuglevel = server_settings["debuglevel"]
2626
use_dbus = server_settings["use_dbus"]
2627
use_ipv6 = server_settings["use_ipv6"]
2628
stored_state_path = os.path.join(server_settings["statedir"],
2629
stored_state_file)
2630
foreground = server_settings["foreground"]
2631
zeroconf = server_settings["zeroconf"]
2632
2633
if debug:
2634
initlogger(debug, logging.DEBUG)
2635
else:
2636
if not debuglevel:
2637
initlogger(debug)
2638
else:
2639
level = getattr(logging, debuglevel.upper())
2640
initlogger(debug, level)
2641
2642
if server_settings["servicename"] != "Mandos":
2643
syslogger.setFormatter(
2644
logging.Formatter('Mandos ({}) [%(process)d]:'
2645
' %(levelname)s: %(message)s'.format(
2646
server_settings["servicename"])))
1682
debug = server_settings[u"debug"]
1683
use_dbus = server_settings[u"use_dbus"]
1684
use_ipv6 = server_settings[u"use_ipv6"]
1685
1686
if not debug:
1687
syslogger.setLevel(logging.WARNING)
1688
console.setLevel(logging.WARNING)
1689
1690
if server_settings[u"servicename"] != u"Mandos":
1691
syslogger.setFormatter(logging.Formatter
1692
(u'Mandos (%s) [%%(process)d]:'
1693
u' %%(levelname)s: %%(message)s'
1694
% server_settings[u"servicename"]))
2647
1695
2648
1696
# Parse config file with clients
2649
client_config = configparser.SafeConfigParser(Client
2650
.client_defaults)
2651
client_config.read(os.path.join(server_settings["configdir"],
2652
"clients.conf"))
1697
client_defaults = { u"timeout": u"1h",
1698
u"interval": u"5m",
1699
u"checker": u"fping -q -- %%(host)s",
1700
u"host": u"",
1701
u"approved_delay": u"0s",
1702
u"approved_duration": u"1s",
1703
}
1704
client_config = configparser.SafeConfigParser(client_defaults)
1705
client_config.read(os.path.join(server_settings[u"configdir"],
1706
u"clients.conf"))
2653
1707
2654
1708
global mandos_dbus_service
2655
1709
mandos_dbus_service = None
2656
1710
2657
socketfd = None
2658
if server_settings["socket"] != "":
2659
socketfd = server_settings["socket"]
2660
tcp_server = MandosServer(
2661
(server_settings["address"], server_settings["port"]),
2662
ClientHandler,
2663
interface=(server_settings["interface"] or None),
2664
use_ipv6=use_ipv6,
2665
gnutls_priority=server_settings["priority"],
2666
use_dbus=use_dbus,
2667
socketfd=socketfd)
2668
if not foreground:
2669
pidfilename = "/run/mandos.pid"
2670
if not os.path.isdir("/run/."):
2671
pidfilename = "/var/run/mandos.pid"
2672
pidfile = None
2673
try:
2674
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2675
except IOError as e:
2676
logger.error("Could not open file %r", pidfilename,
2677
exc_info=e)
1711
tcp_server = MandosServer((server_settings[u"address"],
1712
server_settings[u"port"]),
1713
ClientHandler,
1714
interface=server_settings[u"interface"],
1715
use_ipv6=use_ipv6,
1716
gnutls_priority=
1717
server_settings[u"priority"],
1718
use_dbus=use_dbus)
1719
pidfilename = u"/var/run/mandos.pid"
1720
try:
1721
pidfile = open(pidfilename, u"w")
1722
except IOError:
1723
logger.error(u"Could not open file %r", pidfilename)
2678
1724
2679
for name in ("_mandos", "mandos", "nobody"):
1725
try:
1726
uid = pwd.getpwnam(u"_mandos").pw_uid
1727
gid = pwd.getpwnam(u"_mandos").pw_gid
1728
except KeyError:
2680
1729
try:
2681
uid = pwd.getpwnam(name).pw_uid
2682
gid = pwd.getpwnam(name).pw_gid
2683
break
1730
uid = pwd.getpwnam(u"mandos").pw_uid
1731
gid = pwd.getpwnam(u"mandos").pw_gid
2684
1732
except KeyError:
2685
continue
2686
else:
2687
uid = 65534
2688
gid = 65534
1733
try:
1734
uid = pwd.getpwnam(u"nobody").pw_uid
1735
gid = pwd.getpwnam(u"nobody").pw_gid
1736
except KeyError:
1737
uid = 65534
1738
gid = 65534
2689
1739
try:
2690
1740
os.setgid(gid)
2691
1741
os.setuid(uid)
2692
except OSError as error:
2693
if error.errno != errno.EPERM:
2694
raise
1742
except OSError, error:
1743
if error[0] != errno.EPERM:
1744
raise error
2695
1745
1746
# Enable all possible GnuTLS debugging
2696
1747
if debug:
2697
# Enable all possible GnuTLS debugging
2698
2699
1748
# "Use a log level over 10 to enable all debugging options."
2700
1749
# - GnuTLS manual
2701
1750
gnutls.library.functions.gnutls_global_set_log_level(11)
2702
1751
2703
1752
@gnutls.library.types.gnutls_log_func
2704
1753
def debug_gnutls(level, string):
2705
logger.debug("GnuTLS: %s", string[:-1])
2706
2707
gnutls.library.functions.gnutls_global_set_log_function(
2708
debug_gnutls)
2709
2710
# Redirect stdin so all checkers get /dev/null
2711
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2712
os.dup2(null, sys.stdin.fileno())
2713
if null > 2:
2714
os.close(null)
2715
2716
# Need to fork before connecting to D-Bus
2717
if not foreground:
2718
# Close all input and output, do double fork, etc.
2719
daemon()
2720
2721
# multiprocessing will use threads, so before we use gobject we
2722
# need to inform gobject that threads will be used.
2723
gobject.threads_init()
1754
logger.debug(u"GnuTLS: %s", string[:-1])
1755
1756
(gnutls.library.functions
1757
.gnutls_global_set_log_function(debug_gnutls))
2724
1758
2725
1759
global main_loop
2726
1760
# From the Avahi example code
2727
DBusGMainLoop(set_as_default=True)
1761
DBusGMainLoop(set_as_default=True )
2728
1762
main_loop = gobject.MainLoop()
2729
1763
bus = dbus.SystemBus()
2730
1764
# End of Avahi example code
2731
1765
if use_dbus:
2732
1766
try:
2733
bus_name = dbus.service.BusName("se.recompile.Mandos",
2734
bus,
2735
do_not_queue=True)
2736
old_bus_name = dbus.service.BusName(
2737
"se.bsnet.fukt.Mandos", bus,
2738
do_not_queue=True)
2739
except dbus.exceptions.DBusException as e:
2740
logger.error("Disabling D-Bus:", exc_info=e)
1767
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1768
bus, do_not_queue=True)
1769
except dbus.exceptions.NameExistsException, e:
1770
logger.error(unicode(e) + u", disabling D-Bus")
2741
1771
use_dbus = False
2742
server_settings["use_dbus"] = False
1772
server_settings[u"use_dbus"] = False
2743
1773
tcp_server.use_dbus = False
2744
if zeroconf:
2745
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2746
service = AvahiServiceToSyslog(
2747
name = server_settings["servicename"],
2748
servicetype = "_mandos._tcp",
2749
protocol = protocol,
2750
bus = bus)
2751
if server_settings["interface"]:
2752
service.interface = if_nametoindex(
2753
server_settings["interface"].encode("utf-8"))
2754
2755
global multiprocessing_manager
2756
multiprocessing_manager = multiprocessing.Manager()
1774
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1775
service = AvahiService(name = server_settings[u"servicename"],
1776
servicetype = u"_mandos._tcp",
1777
protocol = protocol, bus = bus)
1778
if server_settings["interface"]:
1779
service.interface = (if_nametoindex
1780
(str(server_settings[u"interface"])))
2757
1781
2758
1782
client_class = Client
2759
1783
if use_dbus:
2760
1784
client_class = functools.partial(ClientDBus, bus = bus)
2761
2762
client_settings = Client.config_parser(client_config)
2763
old_client_settings = {}
2764
clients_data = {}
2765
2766
# This is used to redirect stdout and stderr for checker processes
2767
global wnull
2768
wnull = open(os.devnull, "w") # A writable /dev/null
2769
# Only used if server is running in foreground but not in debug
2770
# mode
2771
if debug or not foreground:
2772
wnull.close()
2773
2774
# Get client data and settings from last running state.
2775
if server_settings["restore"]:
2776
try:
2777
with open(stored_state_path, "rb") as stored_state:
2778
clients_data, old_client_settings = pickle.load(
2779
stored_state)
2780
os.remove(stored_state_path)
2781
except IOError as e:
2782
if e.errno == errno.ENOENT:
2783
logger.warning("Could not load persistent state:"
2784
" {}".format(os.strerror(e.errno)))
2785
else:
2786
logger.critical("Could not load persistent state:",
2787
exc_info=e)
2788
raise
2789
except EOFError as e:
2790
logger.warning("Could not load persistent state: "
2791
"EOFError:",
2792
exc_info=e)
2793
2794
with PGPEngine() as pgp:
2795
for client_name, client in clients_data.items():
2796
# Skip removed clients
2797
if client_name not in client_settings:
2798
continue
2799
2800
# Decide which value to use after restoring saved state.
2801
# We have three different values: Old config file,
2802
# new config file, and saved state.
2803
# New config value takes precedence if it differs from old
2804
# config value, otherwise use saved state.
2805
for name, value in client_settings[client_name].items():
2806
try:
2807
# For each value in new config, check if it
2808
# differs from the old config value (Except for
2809
# the "secret" attribute)
2810
if (name != "secret"
2811
and (value !=
2812
old_client_settings[client_name][name])):
2813
client[name] = value
2814
except KeyError:
2815
pass
2816
2817
# Clients who has passed its expire date can still be
2818
# enabled if its last checker was successful. A Client
2819
# whose checker succeeded before we stored its state is
2820
# assumed to have successfully run all checkers during
2821
# downtime.
2822
if client["enabled"]:
2823
if datetime.datetime.utcnow() >= client["expires"]:
2824
if not client["last_checked_ok"]:
2825
logger.warning(
2826
"disabling client {} - Client never "
2827
"performed a successful checker".format(
2828
client_name))
2829
client["enabled"] = False
2830
elif client["last_checker_status"] != 0:
2831
logger.warning(
2832
"disabling client {} - Client last"
2833
" checker failed with error code"
2834
" {}".format(
2835
client_name,
2836
client["last_checker_status"]))
2837
client["enabled"] = False
2838
else:
2839
client["expires"] = (
2840
datetime.datetime.utcnow()
2841
+ client["timeout"])
2842
logger.debug("Last checker succeeded,"
2843
" keeping {} enabled".format(
2844
client_name))
1785
def client_config_items(config, section):
1786
special_settings = {
1787
"approved_by_default":
1788
lambda: config.getboolean(section,
1789
"approved_by_default"),
1790
}
1791
for name, value in config.items(section):
2845
1792
try:
2846
client["secret"] = pgp.decrypt(
2847
client["encrypted_secret"],
2848
client_settings[client_name]["secret"])
2849
except PGPError:
2850
# If decryption fails, we use secret from new settings
2851
logger.debug("Failed to decrypt {} old secret".format(
2852
client_name))
2853
client["secret"] = (client_settings[client_name]
2854
["secret"])
2855
2856
# Add/remove clients based on new changes made to config
2857
for client_name in (set(old_client_settings)
2858
- set(client_settings)):
2859
del clients_data[client_name]
2860
for client_name in (set(client_settings)
2861
- set(old_client_settings)):
2862
clients_data[client_name] = client_settings[client_name]
2863
2864
# Create all client objects
2865
for client_name, client in clients_data.items():
2866
tcp_server.clients[client_name] = client_class(
2867
name = client_name,
2868
settings = client,
2869
server_settings = server_settings)
2870
1793
yield (name, special_settings[name]())
1794
except KeyError:
1795
yield (name, value)
1796
1797
tcp_server.clients.update(set(
1798
client_class(name = section,
1799
config= dict(client_config_items(
1800
client_config, section)))
1801
for section in client_config.sections()))
2871
1802
if not tcp_server.clients:
2872
logger.warning("No clients defined")
2873
2874
if not foreground:
2875
if pidfile is not None:
1803
logger.warning(u"No clients defined")
1804
1805
if debug:
1806
# Redirect stdin so all checkers get /dev/null
1807
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1808
os.dup2(null, sys.stdin.fileno())
1809
if null > 2:
1810
os.close(null)
1811
else:
1812
# No console logging
1813
logger.removeHandler(console)
1814
# Close all input and output, do double fork, etc.
1815
daemon()
1816
1817
try:
1818
with pidfile:
2876
1819
pid = os.getpid()
2877
try:
2878
with pidfile:
2879
print(pid, file=pidfile)
2880
except IOError:
2881
logger.error("Could not write to file %r with PID %d",
2882
pidfilename, pid)
1820
pidfile.write(str(pid) + "\n")
2883
1821
del pidfile
2884
del pidfilename
1822
except IOError:
1823
logger.error(u"Could not write to file %r with PID %d",
1824
pidfilename, pid)
1825
except NameError:
1826
# "pidfile" was never created
1827
pass
1828
del pidfilename
2885
1829
1830
if not debug:
1831
signal.signal(signal.SIGINT, signal.SIG_IGN)
2886
1832
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2887
1833
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2888
1834
2889
1835
if use_dbus:
2890
2891
@alternate_dbus_interfaces(
2892
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2893
class MandosDBusService(DBusObjectWithObjectManager):
1836
class MandosDBusService(dbus.service.Object):
2894
1837
"""A D-Bus proxy object"""
2895
2896
1838
def __init__(self):
2897
dbus.service.Object.__init__(self, bus, "/")
2898
2899
_interface = "se.recompile.Mandos"
2900
2901
@dbus.service.signal(_interface, signature="o")
1839
dbus.service.Object.__init__(self, bus, u"/")
1840
_interface = u"se.bsnet.fukt.Mandos"
1841
1842
@dbus.service.signal(_interface, signature=u"o")
2902
1843
def ClientAdded(self, objpath):
2903
1844
"D-Bus signal"
2904
1845
pass
2905
1846
2906
@dbus.service.signal(_interface, signature="ss")
1847
@dbus.service.signal(_interface, signature=u"ss")
2907
1848
def ClientNotFound(self, fingerprint, address):
2908
1849
"D-Bus signal"
2909
1850
pass
2910
1851
2911
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2912
"true"})
2913
@dbus.service.signal(_interface, signature="os")
1852
@dbus.service.signal(_interface, signature=u"os")
2914
1853
def ClientRemoved(self, objpath, name):
2915
1854
"D-Bus signal"
2916
1855
pass
2917
1856
2918
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2919
"true"})
2920
@dbus.service.method(_interface, out_signature="ao")
1857
@dbus.service.method(_interface, out_signature=u"ao")
2921
1858
def GetAllClients(self):
2922
1859
"D-Bus method"
2923
return dbus.Array(c.dbus_object_path for c in
2924
tcp_server.clients.itervalues())
1860
return dbus.Array(c.dbus_object_path
1861
for c in tcp_server.clients)
2925
1862
2926
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2927
"true"})
2928
1863
@dbus.service.method(_interface,
2929
out_signature="a{oa{sv}}")
1864
out_signature=u"a{oa{sv}}")
2930
1865
def GetAllClientsWithProperties(self):
2931
1866
"D-Bus method"
2932
1867
return dbus.Dictionary(
2933
{ c.dbus_object_path: c.GetAll(
2934
"se.recompile.Mandos.Client")
2935
for c in tcp_server.clients.itervalues() },
2936
signature="oa{sv}")
1868
((c.dbus_object_path, c.GetAll(u""))
1869
for c in tcp_server.clients),
1870
signature=u"oa{sv}")
2937
1871
2938
@dbus.service.method(_interface, in_signature="o")
1872
@dbus.service.method(_interface, in_signature=u"o")
2939
1873
def RemoveClient(self, object_path):
2940
1874
"D-Bus method"
2941
for c in tcp_server.clients.itervalues():
1875
for c in tcp_server.clients:
2942
1876
if c.dbus_object_path == object_path:
2943
del tcp_server.clients[c.name]
1877
tcp_server.clients.remove(c)
2944
1878
c.remove_from_connection()
2945
# Don't signal the disabling
1879
# Don't signal anything except ClientRemoved
2946
1880
c.disable(quiet=True)
2947
# Emit D-Bus signal for removal
2948
self.client_removed_signal(c)
1881
# Emit D-Bus signal
1882
self.ClientRemoved(object_path, c.name)
2949
1883
return
2950
1884
raise KeyError(object_path)
2951
1885
2952
1886
del _interface
2953
2954
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2955
out_signature = "a{oa{sa{sv}}}")
2956
def GetManagedObjects(self):
2957
"""D-Bus method"""
2958
return dbus.Dictionary(
2959
{ client.dbus_object_path:
2960
dbus.Dictionary(
2961
{ interface: client.GetAll(interface)
2962
for interface in
2963
client._get_all_interface_names()})
2964
for client in tcp_server.clients.values()})
2965
2966
def client_added_signal(self, client):
2967
"""Send the new standard signal and the old signal"""
2968
if use_dbus:
2969
# New standard signal
2970
self.InterfacesAdded(
2971
client.dbus_object_path,
2972
dbus.Dictionary(
2973
{ interface: client.GetAll(interface)
2974
for interface in
2975
client._get_all_interface_names()}))
2976
# Old signal
2977
self.ClientAdded(client.dbus_object_path)
2978
2979
def client_removed_signal(self, client):
2980
"""Send the new standard signal and the old signal"""
2981
if use_dbus:
2982
# New standard signal
2983
self.InterfacesRemoved(
2984
client.dbus_object_path,
2985
client._get_all_interface_names())
2986
# Old signal
2987
self.ClientRemoved(client.dbus_object_path,
2988
client.name)
2989
1887
2990
1888
mandos_dbus_service = MandosDBusService()
2991
1889
2992
1890
def cleanup():
2993
1891
"Cleanup function; run on exit"
2994
if zeroconf:
2995
service.cleanup()
2996
2997
multiprocessing.active_children()
2998
wnull.close()
2999
if not (tcp_server.clients or client_settings):
3000
return
3001
3002
# Store client before exiting. Secrets are encrypted with key
3003
# based on what config file has. If config file is
3004
# removed/edited, old secret will thus be unrecovable.
3005
clients = {}
3006
with PGPEngine() as pgp:
3007
for client in tcp_server.clients.itervalues():
3008
key = client_settings[client.name]["secret"]
3009
client.encrypted_secret = pgp.encrypt(client.secret,
3010
key)
3011
client_dict = {}
3012
3013
# A list of attributes that can not be pickled
3014
# + secret.
3015
exclude = { "bus", "changedstate", "secret",
3016
"checker", "server_settings" }
3017
for name, typ in inspect.getmembers(dbus.service
3018
.Object):
3019
exclude.add(name)
3020
3021
client_dict["encrypted_secret"] = (client
3022
.encrypted_secret)
3023
for attr in client.client_structure:
3024
if attr not in exclude:
3025
client_dict[attr] = getattr(client, attr)
3026
3027
clients[client.name] = client_dict
3028
del client_settings[client.name]["secret"]
3029
3030
try:
3031
with tempfile.NamedTemporaryFile(
3032
mode='wb',
3033
suffix=".pickle",
3034
prefix='clients-',
3035
dir=os.path.dirname(stored_state_path),
3036
delete=False) as stored_state:
3037
pickle.dump((clients, client_settings), stored_state)
3038
tempname = stored_state.name
3039
os.rename(tempname, stored_state_path)
3040
except (IOError, OSError) as e:
3041
if not debug:
3042
try:
3043
os.remove(tempname)
3044
except NameError:
3045
pass
3046
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3047
logger.warning("Could not save persistent state: {}"
3048
.format(os.strerror(e.errno)))
3049
else:
3050
logger.warning("Could not save persistent state:",
3051
exc_info=e)
3052
raise
3053
3054
# Delete all clients, and settings from config
1892
service.cleanup()
1893
3055
1894
while tcp_server.clients:
3056
name, client = tcp_server.clients.popitem()
1895
client = tcp_server.clients.pop()
3057
1896
if use_dbus:
3058
1897
client.remove_from_connection()
3059
# Don't signal the disabling
1898
client.disable_hook = None
1899
# Don't signal anything except ClientRemoved
3060
1900
client.disable(quiet=True)
3061
# Emit D-Bus signal for removal
3062
mandos_dbus_service.client_removed_signal(client)
3063
client_settings.clear()
1901
if use_dbus:
1902
# Emit D-Bus signal
1903
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1904
client.name)
3064
1905
3065
1906
atexit.register(cleanup)
3066
1907
3067
for client in tcp_server.clients.itervalues():
1908
for client in tcp_server.clients:
3068
1909
if use_dbus:
3069
# Emit D-Bus signal for adding
3070
mandos_dbus_service.client_added_signal(client)
3071
# Need to initiate checking of clients
3072
if client.enabled:
3073
client.init_checker()
1910
# Emit D-Bus signal
1911
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1912
client.enable()
3074
1913
3075
1914
tcp_server.enable()
3076
1915
tcp_server.server_activate()
3077
1916
3078
1917
# Find out what port we got
3079
if zeroconf:
3080
service.port = tcp_server.socket.getsockname()[1]
1918
service.port = tcp_server.socket.getsockname()[1]
3081
1919
if use_ipv6:
3082
logger.info("Now listening on address %r, port %d,"
3083
" flowinfo %d, scope_id %d",
3084
*tcp_server.socket.getsockname())
1920
logger.info(u"Now listening on address %r, port %d,"
1921
" flowinfo %d, scope_id %d"
1922
% tcp_server.socket.getsockname())
3085
1923
else: # IPv4
3086
logger.info("Now listening on address %r, port %d",
3087
*tcp_server.socket.getsockname())
1924
logger.info(u"Now listening on address %r, port %d"
1925
% tcp_server.socket.getsockname())
3088
1926
3089
1927
#service.interface = tcp_server.socket.getsockname()[3]
3090
1928
3091
1929
try:
3092
if zeroconf:
3093
# From the Avahi example code
3094
try:
3095
service.activate()
3096
except dbus.exceptions.DBusException as error:
3097
logger.critical("D-Bus Exception", exc_info=error)
3098
cleanup()
3099
sys.exit(1)
3100
# End of Avahi example code
1930
# From the Avahi example code
1931
try:
1932
service.activate()
1933
except dbus.exceptions.DBusException, error:
1934
logger.critical(u"DBusException: %s", error)
1935
cleanup()
1936
sys.exit(1)
1937
# End of Avahi example code
3101
1938
3102
1939
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3103
1940
lambda *args, **kwargs:
3104
1941
(tcp_server.handle_request
3105
1942
(*args[2:], **kwargs) or True))
3106
1943
3107
logger.debug("Starting main loop")
1944
logger.debug(u"Starting main loop")
3108
1945
main_loop.run()
3109
except AvahiError as error:
3110
logger.critical("Avahi Error", exc_info=error)
1946
except AvahiError, error:
1947
logger.critical(u"AvahiError: %s", error)
3111
1948
cleanup()
3112
1949
sys.exit(1)
3113
1950
except KeyboardInterrupt:
3114
1951
if debug:
3115
print("", file=sys.stderr)
3116
logger.debug("Server received KeyboardInterrupt")
3117
logger.debug("Server exiting")
1952
print >> sys.stderr
1953
logger.debug(u"Server received KeyboardInterrupt")
1954
logger.debug(u"Server exiting")
3118
1955
# Must run before the D-Bus bus name gets deregistered
3119
1956
cleanup()
3120
1957
3121
3122
1958
if __name__ == '__main__':
3123
1959
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0