To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 24.2.1
- compare with another revision
- download diff
- download tarball
- view history from revision 24.2.1
- Committer: teddy at bsnet
- Date: 2010-08-23 19:23:15 UTC
- mto: (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: teddy@fukt.bsnet.se-20100823192315-pefgye0l6cavcejs
* debian/control (mandos/Depends): Added "python-urwid".
* mandos (Client.approved_by_default): Changed default to "True".
(Client.approved_delay): Changed default to "0s".
(ClientDBus.GotSecret, ClientDBus.Rejected,
ClientDBus.NeedApproval): Emit "PropertyChanged" signal for the
"approved_pending" property.
* mandos (Client.approved_by_default): Changed default to "True".
(Client.approved_delay): Changed default to "0s".
(ClientDBus.GotSecret, ClientDBus.Rejected,
ClientDBus.NeedApproval): Emit "PropertyChanged" signal for the
"approved_pending" property.
- 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.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
100
101
multiprocessing_manager = multiprocessing.Manager()
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
221
self.add()
399
else:
400
if error is None:
401
logger.debug("Unknown state: %r", state)
402
else:
403
logger.debug("Unknown state: %r: %r", state, error)
404
405
222
def activate(self):
406
223
"""Derived from the Avahi example code"""
407
224
if self.server is None:
408
225
self.server = dbus.Interface(
409
226
self.bus.get_object(avahi.DBUS_NAME,
410
avahi.DBUS_PATH_SERVER,
411
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
412
228
avahi.DBUS_INTERFACE_SERVER)
413
self.server.connect_to_signal("StateChanged",
414
self.server_state_changed)
229
self.server.connect_to_signal(u"StateChanged",
230
self.server_state_changed)
415
231
self.server_state_changed(self.server.GetState())
416
232
417
233
418
class AvahiServiceToSyslog(AvahiService):
419
def rename(self, *args, **kwargs):
420
"""Add the new name to the syslog messages"""
421
ret = AvahiService.rename(self, *args, **kwargs)
422
syslogger.setFormatter(logging.Formatter(
423
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
424
.format(self.name)))
425
return ret
426
427
def call_pipe(connection, # : multiprocessing.Connection
428
func, *args, **kwargs):
429
"""This function is meant to be called by multiprocessing.Process
430
431
This function runs func(*args, **kwargs), and writes the resulting
432
return value on the provided multiprocessing.Connection.
433
"""
434
connection.send(func(*args, **kwargs))
435
connection.close()
436
437
234
class Client(object):
438
235
"""A representation of a client host served by this server.
439
236
440
237
Attributes:
441
approved: bool(); 'None' if not yet approved/disapproved
442
approval_delay: datetime.timedelta(); Time to wait for approval
443
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)
444
252
checker: subprocess.Popen(); a running checker process used
445
253
to see if the client lives.
446
254
'None' if no process is running.
447
checker_callback_tag: a gobject event source tag, or None
448
checker_command: string; External command which is run to check
449
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
450
260
runtime with vars(self) as dict, so that for
451
261
instance %(name)s can be used in the command.
452
checker_initiator_tag: a gobject event source tag, or None
453
created: datetime.datetime(); (UTC) object creation
454
client_structure: Object describing what attributes a client has
455
and is used for storing the client at exit
456
262
current_checker_command: string; current running checker_command
457
disable_initiator_tag: a gobject event source tag, or None
458
enabled: bool()
459
fingerprint: string (40 or 32 hexadecimal digits); used to
460
uniquely identify the client
461
host: string; available for use by the checker command
462
interval: datetime.timedelta(); How often to start a new checker
463
last_approval_request: datetime.datetime(); (UTC) or None
464
last_checked_ok: datetime.datetime(); (UTC) or None
465
last_checker_status: integer between 0 and 255 reflecting exit
466
status of last checker. -1 reflects crashed
467
checker, -2 means no checker completed yet.
468
last_checker_signal: The signal which killed the last checker, if
469
last_checker_status is -1
470
last_enabled: datetime.datetime(); (UTC) or None
471
name: string; from the config file, used in log messages and
472
D-Bus identifiers
473
secret: bytestring; sent verbatim (over TLS) to client
474
timeout: datetime.timedelta(); How long from last_checked_ok
475
until this client is disabled
476
extended_timeout: extra long timeout when secret has been sent
477
runtime_expansions: Allowed attributes for runtime expansion.
478
expires: datetime.datetime(); time (UTC) when a client will be
479
disabled, or None
480
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
481
266
"""
482
267
483
runtime_expansions = ("approval_delay", "approval_duration",
484
"created", "enabled", "expires",
485
"fingerprint", "host", "interval",
486
"last_approval_request", "last_checked_ok",
487
"last_enabled", "name", "timeout")
488
client_defaults = {
489
"timeout": "PT5M",
490
"extended_timeout": "PT15M",
491
"interval": "PT2M",
492
"checker": "fping -q -- %%(host)s",
493
"host": "",
494
"approval_delay": "PT0S",
495
"approval_duration": "PT1S",
496
"approved_by_default": "True",
497
"enabled": "True",
498
}
499
500
268
@staticmethod
501
def config_parser(config):
502
"""Construct a new dict of client settings of this form:
503
{ client_name: {setting_name: value, ...}, ...}
504
with exceptions for any special settings as defined above.
505
NOTE: Must be a pure function. Must return the same result
506
value given the same arguments.
507
"""
508
settings = {}
509
for client_name in config.sections():
510
section = dict(config.items(client_name))
511
client = settings[client_name] = {}
512
513
client["host"] = section["host"]
514
# Reformat values from string types to Python types
515
client["approved_by_default"] = config.getboolean(
516
client_name, "approved_by_default")
517
client["enabled"] = config.getboolean(client_name,
518
"enabled")
519
520
# Uppercase and remove spaces from fingerprint for later
521
# comparison purposes with return value from the
522
# fingerprint() function
523
client["fingerprint"] = (section["fingerprint"].upper()
524
.replace(" ", ""))
525
if "secret" in section:
526
client["secret"] = section["secret"].decode("base64")
527
elif "secfile" in section:
528
with open(os.path.expanduser(os.path.expandvars
529
(section["secfile"])),
530
"rb") as secfile:
531
client["secret"] = secfile.read()
532
else:
533
raise TypeError("No secret or secfile for section {}"
534
.format(section))
535
client["timeout"] = string_to_delta(section["timeout"])
536
client["extended_timeout"] = string_to_delta(
537
section["extended_timeout"])
538
client["interval"] = string_to_delta(section["interval"])
539
client["approval_delay"] = string_to_delta(
540
section["approval_delay"])
541
client["approval_duration"] = string_to_delta(
542
section["approval_duration"])
543
client["checker_command"] = section["checker"]
544
client["last_approval_request"] = None
545
client["last_checked_ok"] = None
546
client["last_checker_status"] = -2
547
548
return settings
549
550
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."""
551
290
self.name = name
552
if server_settings is None:
553
server_settings = {}
554
self.server_settings = server_settings
555
# adding all client settings
556
for setting, value in settings.items():
557
setattr(self, setting, value)
558
559
if self.enabled:
560
if not hasattr(self, "last_enabled"):
561
self.last_enabled = datetime.datetime.utcnow()
562
if not hasattr(self, "expires"):
563
self.expires = (datetime.datetime.utcnow()
564
+ 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()
565
307
else:
566
self.last_enabled = None
567
self.expires = None
568
569
logger.debug("Creating client %r", self.name)
570
logger.debug(" Fingerprint: %s", self.fingerprint)
571
self.created = settings.get("created",
572
datetime.datetime.utcnow())
573
574
# 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
575
319
self.checker = None
576
320
self.checker_initiator_tag = None
577
321
self.disable_initiator_tag = None
578
322
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
579
324
self.current_checker_command = None
580
self.approved = None
325
self.last_connect = None
581
326
self.approvals_pending = 0
582
self.changedstate = multiprocessing_manager.Condition(
583
multiprocessing_manager.Lock())
584
self.client_structure = [attr
585
for attr in self.__dict__.iterkeys()
586
if not attr.startswith("_")]
587
self.client_structure.append("client_structure")
588
589
for name, t in inspect.getmembers(
590
type(self), lambda obj: isinstance(obj, property)):
591
if not name.startswith("_"):
592
self.client_structure.append(name)
593
594
# Send notice to process children that client state has changed
327
self._approved = None
328
self.approved_by_default = config.get(u"approved_by_default",
329
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())
335
595
336
def send_changedstate(self):
596
with self.changedstate:
597
self.changedstate.notify_all()
598
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
599
341
def enable(self):
600
342
"""Start this client's checker and timeout hooks"""
601
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
602
344
# Already enabled
603
345
return
604
self.expires = datetime.datetime.utcnow() + self.timeout
605
self.enabled = True
346
self.send_changedstate()
606
347
self.last_enabled = datetime.datetime.utcnow()
607
self.init_checker()
608
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()
609
360
610
361
def disable(self, quiet=True):
611
362
"""Disable this client."""
612
363
if not getattr(self, "enabled", False):
613
364
return False
614
365
if not quiet:
615
logger.info("Disabling client %s", self.name)
616
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):
617
370
gobject.source_remove(self.disable_initiator_tag)
618
371
self.disable_initiator_tag = None
619
self.expires = None
620
if getattr(self, "checker_initiator_tag", None) is not None:
372
if getattr(self, u"checker_initiator_tag", False):
621
373
gobject.source_remove(self.checker_initiator_tag)
622
374
self.checker_initiator_tag = None
623
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
624
378
self.enabled = False
625
if not quiet:
626
self.send_changedstate()
627
379
# Do not run this again if called by a gobject.timeout_add
628
380
return False
629
381
630
382
def __del__(self):
383
self.disable_hook = None
631
384
self.disable()
632
385
633
def init_checker(self):
634
# Schedule a new checker to be started an 'interval' from now,
635
# and every interval from then on.
636
if self.checker_initiator_tag is not None:
637
gobject.source_remove(self.checker_initiator_tag)
638
self.checker_initiator_tag = gobject.timeout_add(
639
int(self.interval.total_seconds() * 1000),
640
self.start_checker)
641
# Schedule a disable() when 'timeout' has passed
642
if self.disable_initiator_tag is not None:
643
gobject.source_remove(self.disable_initiator_tag)
644
self.disable_initiator_tag = gobject.timeout_add(
645
int(self.timeout.total_seconds() * 1000), self.disable)
646
# Also start a new checker *right now*.
647
self.start_checker()
648
649
def checker_callback(self, source, condition, connection,
650
command):
386
def checker_callback(self, pid, condition, command):
651
387
"""The checker has completed, so take appropriate actions."""
652
388
self.checker_callback_tag = None
653
389
self.checker = None
654
# Read return code from connection (see call_pipe)
655
returncode = connection.recv()
656
connection.close()
657
658
if returncode >= 0:
659
self.last_checker_status = returncode
660
self.last_checker_signal = None
661
if self.last_checker_status == 0:
662
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",
663
394
vars(self))
664
395
self.checked_ok()
665
396
else:
666
logger.info("Checker for %(name)s failed", vars(self))
397
logger.info(u"Checker for %(name)s failed",
398
vars(self))
667
399
else:
668
self.last_checker_status = -1
669
self.last_checker_signal = -returncode
670
logger.warning("Checker for %(name)s crashed?",
400
logger.warning(u"Checker for %(name)s crashed?",
671
401
vars(self))
672
return False
673
402
674
403
def checked_ok(self):
675
"""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
"""
676
409
self.last_checked_ok = datetime.datetime.utcnow()
677
self.last_checker_status = 0
678
self.last_checker_signal = None
679
self.bump_timeout()
680
681
def bump_timeout(self, timeout=None):
682
"""Bump up the timeout for this client."""
683
if timeout is None:
684
timeout = self.timeout
685
if self.disable_initiator_tag is not None:
686
gobject.source_remove(self.disable_initiator_tag)
687
self.disable_initiator_tag = None
688
if getattr(self, "enabled", False):
689
self.disable_initiator_tag = gobject.timeout_add(
690
int(timeout.total_seconds() * 1000), self.disable)
691
self.expires = datetime.datetime.utcnow() + timeout
692
693
def need_approval(self):
694
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))
695
414
696
415
def start_checker(self):
697
416
"""Start a new checker subprocess if one is not running.
699
418
If a checker already exists, leave it running and do
700
419
nothing."""
701
420
# The reason for not killing a running checker is that if we
702
# did that, and if a checker (for some reason) started running
703
# slowly and taking more than 'interval' time, then the client
704
# would inevitably timeout, since no checker would get a
705
# 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
706
425
# checkers alone, the checker would have to take more time
707
426
# than 'timeout' for the client to be disabled, which is as it
708
427
# should be.
709
428
710
if self.checker is not None and not self.checker.is_alive():
711
logger.warning("Checker was not alive; joining")
712
self.checker.join()
713
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)
714
442
# Start a new checker if needed
715
443
if self.checker is None:
716
# Escape attributes for the shell
717
escaped_attrs = {
718
attr: re.escape(str(getattr(self, attr)))
719
for attr in self.runtime_expansions }
720
444
try:
721
command = self.checker_command % escaped_attrs
722
except TypeError as error:
723
logger.error('Could not format string "%s"',
724
self.checker_command,
725
exc_info=error)
726
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
727
461
self.current_checker_command = command
728
logger.info("Starting checker %r for %s", command,
729
self.name)
730
# We don't need to redirect stdout and stderr, since
731
# in normal mode, that is already done by daemon(),
732
# and in debug mode we don't want to. (Stdin is
733
# always replaced by /dev/null.)
734
# The exception is when not debugging but nevertheless
735
# running in the foreground; use the previously
736
# created wnull.
737
popen_args = { "close_fds": True,
738
"shell": True,
739
"cwd": "/" }
740
if (not self.server_settings["debug"]
741
and self.server_settings["foreground"]):
742
popen_args.update({"stdout": wnull,
743
"stderr": wnull })
744
pipe = multiprocessing.Pipe(duplex = False)
745
self.checker = multiprocessing.Process(
746
target = call_pipe,
747
args = (pipe[1], subprocess.call, command),
748
kwargs = popen_args)
749
self.checker.start()
750
self.checker_callback_tag = gobject.io_add_watch(
751
pipe[0].fileno(), gobject.IO_IN,
752
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)
753
485
# Re-run this periodically if run by gobject.timeout_add
754
486
return True
755
487
758
490
if self.checker_callback_tag:
759
491
gobject.source_remove(self.checker_callback_tag)
760
492
self.checker_callback_tag = None
761
if getattr(self, "checker", None) is None:
493
if getattr(self, u"checker", None) is None:
762
494
return
763
logger.debug("Stopping checker for %(name)s", vars(self))
764
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
765
504
self.checker = None
766
505
767
768
def dbus_service_property(dbus_interface,
769
signature="v",
770
access="readwrite",
771
byte_arrays=False):
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
772
508
"""Decorators for marking methods of a DBusObjectWithProperties to
773
509
become properties on the D-Bus.
774
510
781
517
"""
782
518
# Encoding deeply encoded byte arrays is not supported yet by the
783
519
# "Set" method, so we fail early here:
784
if byte_arrays and signature != "ay":
785
raise ValueError("Byte arrays not supported for non-'ay'"
786
" signature {!r}".format(signature))
787
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
788
523
def decorator(func):
789
524
func._dbus_is_property = True
790
525
func._dbus_interface = dbus_interface
791
526
func._dbus_signature = signature
792
527
func._dbus_access = access
793
528
func._dbus_name = func.__name__
794
if func._dbus_name.endswith("_dbus_property"):
529
if func._dbus_name.endswith(u"_dbus_property"):
795
530
func._dbus_name = func._dbus_name[:-14]
796
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
797
return func
798
799
return decorator
800
801
802
def dbus_interface_annotations(dbus_interface):
803
"""Decorator for marking functions returning interface annotations
804
805
Usage:
806
807
@dbus_interface_annotations("org.example.Interface")
808
def _foo(self): # Function name does not matter
809
return {"org.freedesktop.DBus.Deprecated": "true",
810
"org.freedesktop.DBus.Property.EmitsChangedSignal":
811
"false"}
812
"""
813
814
def decorator(func):
815
func._dbus_is_interface = True
816
func._dbus_interface = dbus_interface
817
func._dbus_name = dbus_interface
818
return func
819
820
return decorator
821
822
823
def dbus_annotations(annotations):
824
"""Decorator to annotate D-Bus methods, signals or properties
825
Usage:
826
827
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
828
"org.freedesktop.DBus.Property."
829
"EmitsChangedSignal": "false"})
830
@dbus_service_property("org.example.Interface", signature="b",
831
access="r")
832
def Property_dbus_property(self):
833
return dbus.Boolean(False)
834
"""
835
836
def decorator(func):
837
func._dbus_annotations = annotations
838
return func
839
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
532
return func
840
533
return decorator
841
534
842
535
843
536
class DBusPropertyException(dbus.exceptions.DBusException):
844
537
"""A base class for D-Bus property-related exceptions
845
538
"""
846
pass
539
def __unicode__(self):
540
return unicode(str(self))
847
541
848
542
849
543
class DBusPropertyAccessException(DBusPropertyException):
860
554
861
555
class DBusObjectWithProperties(dbus.service.Object):
862
556
"""A D-Bus object with properties.
863
557
864
558
Classes inheriting from this can use the dbus_service_property
865
559
decorator to expose methods as D-Bus properties. It exposes the
866
560
standard Get(), Set(), and GetAll() methods on the D-Bus.
867
561
"""
868
562
869
563
@staticmethod
870
def _is_dbus_thing(thing):
871
"""Returns a function testing if an attribute is a D-Bus thing
872
873
If called like _is_dbus_thing("method") it returns a function
874
suitable for use as predicate to inspect.getmembers().
875
"""
876
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
877
False)
564
def _is_dbus_property(obj):
565
return getattr(obj, u"_dbus_is_property", False)
878
566
879
def _get_all_dbus_things(self, thing):
567
def _get_all_dbus_properties(self):
880
568
"""Returns a generator of (name, attribute) pairs
881
569
"""
882
return ((getattr(athing.__get__(self), "_dbus_name", name),
883
athing.__get__(self))
884
for cls in self.__class__.__mro__
885
for name, athing in
886
inspect.getmembers(cls, self._is_dbus_thing(thing)))
570
return ((prop._dbus_name, prop)
571
for name, prop in
572
inspect.getmembers(self, self._is_dbus_property))
887
573
888
574
def _get_dbus_property(self, interface_name, property_name):
889
575
"""Returns a bound method if one exists which is a D-Bus
890
576
property with the specified name and interface.
891
577
"""
892
for cls in self.__class__.__mro__:
893
for name, value in inspect.getmembers(
894
cls, self._is_dbus_thing("property")):
895
if (value._dbus_name == property_name
896
and value._dbus_interface == interface_name):
897
return value.__get__(self)
898
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
899
588
# No such property
900
raise DBusPropertyNotFound("{}:{}.{}".format(
901
self.dbus_object_path, interface_name, property_name))
589
raise DBusPropertyNotFound(self.dbus_object_path + u":"
590
+ interface_name + u"."
591
+ property_name)
902
592
903
@dbus.service.method(dbus.PROPERTIES_IFACE,
904
in_signature="ss",
905
out_signature="v")
593
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
594
out_signature=u"v")
906
595
def Get(self, interface_name, property_name):
907
596
"""Standard D-Bus property Get() method, see D-Bus standard.
908
597
"""
909
598
prop = self._get_dbus_property(interface_name, property_name)
910
if prop._dbus_access == "write":
599
if prop._dbus_access == u"write":
911
600
raise DBusPropertyAccessException(property_name)
912
601
value = prop()
913
if not hasattr(value, "variant_level"):
602
if not hasattr(value, u"variant_level"):
914
603
return value
915
604
return type(value)(value, variant_level=value.variant_level+1)
916
605
917
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
918
607
def Set(self, interface_name, property_name, value):
919
608
"""Standard D-Bus property Set() method, see D-Bus standard.
920
609
"""
921
610
prop = self._get_dbus_property(interface_name, property_name)
922
if prop._dbus_access == "read":
611
if prop._dbus_access == u"read":
923
612
raise DBusPropertyAccessException(property_name)
924
if prop._dbus_get_args_options["byte_arrays"]:
613
if prop._dbus_get_args_options[u"byte_arrays"]:
925
614
# The byte_arrays option is not supported yet on
926
615
# signatures other than "ay".
927
if prop._dbus_signature != "ay":
928
raise ValueError("Byte arrays not supported for non-"
929
"'ay' signature {!r}"
930
.format(prop._dbus_signature))
931
value = dbus.ByteArray(b''.join(chr(byte)
932
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))
933
620
prop(value)
934
621
935
@dbus.service.method(dbus.PROPERTIES_IFACE,
936
in_signature="s",
937
out_signature="a{sv}")
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
938
624
def GetAll(self, interface_name):
939
625
"""Standard D-Bus property GetAll() method, see D-Bus
940
626
standard.
941
627
942
628
Note: Will not include properties with access="write".
943
629
"""
944
properties = {}
945
for name, prop in self._get_all_dbus_things("property"):
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
946
632
if (interface_name
947
633
and interface_name != prop._dbus_interface):
948
634
# Interface non-empty but did not match
949
635
continue
950
636
# Ignore write-only properties
951
if prop._dbus_access == "write":
637
if prop._dbus_access == u"write":
952
638
continue
953
639
value = prop()
954
if not hasattr(value, "variant_level"):
955
properties[name] = value
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
956
642
continue
957
properties[name] = type(value)(
958
value, variant_level = value.variant_level + 1)
959
return dbus.Dictionary(properties, signature="sv")
960
961
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
962
def PropertiesChanged(self, interface_name, changed_properties,
963
invalidated_properties):
964
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
965
standard.
966
"""
967
pass
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
968
646
969
647
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
970
out_signature="s",
648
out_signature=u"s",
971
649
path_keyword='object_path',
972
650
connection_keyword='connection')
973
651
def Introspect(self, object_path, connection):
974
"""Overloading of standard D-Bus method.
975
976
Inserts property tags and interface annotation tags.
652
"""Standard D-Bus method, overloaded to insert property tags.
977
653
"""
978
654
xmlstring = dbus.service.Object.Introspect(self, object_path,
979
655
connection)
980
656
try:
981
657
document = xml.dom.minidom.parseString(xmlstring)
982
983
658
def make_tag(document, name, prop):
984
e = document.createElement("property")
985
e.setAttribute("name", name)
986
e.setAttribute("type", prop._dbus_signature)
987
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)
988
663
return e
989
990
for if_tag in document.getElementsByTagName("interface"):
991
# Add property tags
664
for if_tag in document.getElementsByTagName(u"interface"):
992
665
for tag in (make_tag(document, name, prop)
993
666
for name, prop
994
in self._get_all_dbus_things("property")
667
in self._get_all_dbus_properties()
995
668
if prop._dbus_interface
996
== if_tag.getAttribute("name")):
669
== if_tag.getAttribute(u"name")):
997
670
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr(
1008
prop, "_dbus_annotations", {}))
1009
for name, value in annots.items():
1010
ann_tag = document.createElement(
1011
"annotation")
1012
ann_tag.setAttribute("name", name)
1013
ann_tag.setAttribute("value", value)
1014
tag.appendChild(ann_tag)
1015
# Add interface annotation tags
1016
for annotation, value in dict(
1017
itertools.chain.from_iterable(
1018
annotations().items()
1019
for name, annotations
1020
in self._get_all_dbus_things("interface")
1021
if name == if_tag.getAttribute("name")
1022
)).items():
1023
ann_tag = document.createElement("annotation")
1024
ann_tag.setAttribute("name", annotation)
1025
ann_tag.setAttribute("value", value)
1026
if_tag.appendChild(ann_tag)
1027
671
# Add the names to the return values for the
1028
672
# "org.freedesktop.DBus.Properties" methods
1029
if (if_tag.getAttribute("name")
1030
== "org.freedesktop.DBus.Properties"):
1031
for cn in if_tag.getElementsByTagName("method"):
1032
if cn.getAttribute("name") == "Get":
1033
for arg in cn.getElementsByTagName("arg"):
1034
if (arg.getAttribute("direction")
1035
== "out"):
1036
arg.setAttribute("name", "value")
1037
elif cn.getAttribute("name") == "GetAll":
1038
for arg in cn.getElementsByTagName("arg"):
1039
if (arg.getAttribute("direction")
1040
== "out"):
1041
arg.setAttribute("name", "props")
1042
xmlstring = document.toxml("utf-8")
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")
1043
687
document.unlink()
1044
688
except (AttributeError, xml.dom.DOMException,
1045
xml.parsers.expat.ExpatError) as error:
1046
logger.error("Failed to override Introspection method",
1047
exc_info=error)
689
xml.parsers.expat.ExpatError), error:
690
logger.error(u"Failed to override Introspection method",
691
error)
1048
692
return xmlstring
1049
693
1050
694
1051
def datetime_to_dbus(dt, variant_level=0):
1052
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1053
if dt is None:
1054
return dbus.String("", variant_level = variant_level)
1055
return dbus.String(dt.isoformat(), variant_level=variant_level)
1056
1057
1058
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1059
"""A class decorator; applied to a subclass of
1060
dbus.service.Object, it will add alternate D-Bus attributes with
1061
interface names according to the "alt_interface_names" mapping.
1062
Usage:
1063
1064
@alternate_dbus_interfaces({"org.example.Interface":
1065
"net.example.AlternateInterface"})
1066
class SampleDBusObject(dbus.service.Object):
1067
@dbus.service.method("org.example.Interface")
1068
def SampleDBusMethod():
1069
pass
1070
1071
The above "SampleDBusMethod" on "SampleDBusObject" will be
1072
reachable via two interfaces: "org.example.Interface" and
1073
"net.example.AlternateInterface", the latter of which will have
1074
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1075
"true", unless "deprecate" is passed with a False value.
1076
1077
This works for methods and signals, and also for D-Bus properties
1078
(from DBusObjectWithProperties) and interfaces (from the
1079
dbus_interface_annotations decorator).
1080
"""
1081
1082
def wrapper(cls):
1083
for orig_interface_name, alt_interface_name in (
1084
alt_interface_names.items()):
1085
attr = {}
1086
interface_names = set()
1087
# Go though all attributes of the class
1088
for attrname, attribute in inspect.getmembers(cls):
1089
# Ignore non-D-Bus attributes, and D-Bus attributes
1090
# with the wrong interface name
1091
if (not hasattr(attribute, "_dbus_interface")
1092
or not attribute._dbus_interface.startswith(
1093
orig_interface_name)):
1094
continue
1095
# Create an alternate D-Bus interface name based on
1096
# the current name
1097
alt_interface = attribute._dbus_interface.replace(
1098
orig_interface_name, alt_interface_name)
1099
interface_names.add(alt_interface)
1100
# Is this a D-Bus signal?
1101
if getattr(attribute, "_dbus_is_signal", False):
1102
if sys.version_info.major == 2:
1103
# Extract the original non-method undecorated
1104
# function by black magic
1105
nonmethod_func = (dict(
1106
zip(attribute.func_code.co_freevars,
1107
attribute.__closure__))
1108
["func"].cell_contents)
1109
else:
1110
nonmethod_func = attribute
1111
# Create a new, but exactly alike, function
1112
# object, and decorate it to be a new D-Bus signal
1113
# with the alternate D-Bus interface name
1114
if sys.version_info.major == 2:
1115
new_function = types.FunctionType(
1116
nonmethod_func.func_code,
1117
nonmethod_func.func_globals,
1118
nonmethod_func.func_name,
1119
nonmethod_func.func_defaults,
1120
nonmethod_func.func_closure)
1121
else:
1122
new_function = types.FunctionType(
1123
nonmethod_func.__code__,
1124
nonmethod_func.__globals__,
1125
nonmethod_func.__name__,
1126
nonmethod_func.__defaults__,
1127
nonmethod_func.__closure__)
1128
new_function = (dbus.service.signal(
1129
alt_interface,
1130
attribute._dbus_signature)(new_function))
1131
# Copy annotations, if any
1132
try:
1133
new_function._dbus_annotations = dict(
1134
attribute._dbus_annotations)
1135
except AttributeError:
1136
pass
1137
# Define a creator of a function to call both the
1138
# original and alternate functions, so both the
1139
# original and alternate signals gets sent when
1140
# the function is called
1141
def fixscope(func1, func2):
1142
"""This function is a scope container to pass
1143
func1 and func2 to the "call_both" function
1144
outside of its arguments"""
1145
1146
def call_both(*args, **kwargs):
1147
"""This function will emit two D-Bus
1148
signals by calling func1 and func2"""
1149
func1(*args, **kwargs)
1150
func2(*args, **kwargs)
1151
1152
return call_both
1153
# Create the "call_both" function and add it to
1154
# the class
1155
attr[attrname] = fixscope(attribute, new_function)
1156
# Is this a D-Bus method?
1157
elif getattr(attribute, "_dbus_is_method", False):
1158
# Create a new, but exactly alike, function
1159
# object. Decorate it to be a new D-Bus method
1160
# with the alternate D-Bus interface name. Add it
1161
# to the class.
1162
attr[attrname] = (
1163
dbus.service.method(
1164
alt_interface,
1165
attribute._dbus_in_signature,
1166
attribute._dbus_out_signature)
1167
(types.FunctionType(attribute.func_code,
1168
attribute.func_globals,
1169
attribute.func_name,
1170
attribute.func_defaults,
1171
attribute.func_closure)))
1172
# Copy annotations, if any
1173
try:
1174
attr[attrname]._dbus_annotations = dict(
1175
attribute._dbus_annotations)
1176
except AttributeError:
1177
pass
1178
# Is this a D-Bus property?
1179
elif getattr(attribute, "_dbus_is_property", False):
1180
# Create a new, but exactly alike, function
1181
# object, and decorate it to be a new D-Bus
1182
# property with the alternate D-Bus interface
1183
# name. Add it to the class.
1184
attr[attrname] = (dbus_service_property(
1185
alt_interface, attribute._dbus_signature,
1186
attribute._dbus_access,
1187
attribute._dbus_get_args_options
1188
["byte_arrays"])
1189
(types.FunctionType(
1190
attribute.func_code,
1191
attribute.func_globals,
1192
attribute.func_name,
1193
attribute.func_defaults,
1194
attribute.func_closure)))
1195
# Copy annotations, if any
1196
try:
1197
attr[attrname]._dbus_annotations = dict(
1198
attribute._dbus_annotations)
1199
except AttributeError:
1200
pass
1201
# Is this a D-Bus interface?
1202
elif getattr(attribute, "_dbus_is_interface", False):
1203
# Create a new, but exactly alike, function
1204
# object. Decorate it to be a new D-Bus interface
1205
# with the alternate D-Bus interface name. Add it
1206
# to the class.
1207
attr[attrname] = (
1208
dbus_interface_annotations(alt_interface)
1209
(types.FunctionType(attribute.func_code,
1210
attribute.func_globals,
1211
attribute.func_name,
1212
attribute.func_defaults,
1213
attribute.func_closure)))
1214
if deprecate:
1215
# Deprecate all alternate interfaces
1216
iname="_AlternateDBusNames_interface_annotation{}"
1217
for interface_name in interface_names:
1218
1219
@dbus_interface_annotations(interface_name)
1220
def func(self):
1221
return { "org.freedesktop.DBus.Deprecated":
1222
"true" }
1223
# Find an unused name
1224
for aname in (iname.format(i)
1225
for i in itertools.count()):
1226
if aname not in attr:
1227
attr[aname] = func
1228
break
1229
if interface_names:
1230
# Replace the class with a new subclass of it with
1231
# methods, signals, etc. as created above.
1232
cls = type(b"{}Alternate".format(cls.__name__),
1233
(cls, ), attr)
1234
return cls
1235
1236
return wrapper
1237
1238
1239
@alternate_dbus_interfaces({"se.recompile.Mandos":
1240
"se.bsnet.fukt.Mandos"})
1241
695
class ClientDBus(Client, DBusObjectWithProperties):
1242
696
"""A Client class using D-Bus
1243
697
1245
699
dbus_object_path: dbus.ObjectPath
1246
700
bus: dbus.SystemBus()
1247
701
"""
1248
1249
runtime_expansions = (Client.runtime_expansions
1250
+ ("dbus_object_path", ))
1251
1252
_interface = "se.recompile.Mandos.Client"
1253
1254
702
# dbus.service.Object doesn't use super(), so we can't either.
1255
703
1256
704
def __init__(self, bus = None, *args, **kwargs):
1258
706
Client.__init__(self, *args, **kwargs)
1259
707
# Only now, when this client is initialized, can it show up on
1260
708
# the D-Bus
1261
client_object_name = str(self.name).translate(
1262
{ord("."): ord("_"),
1263
ord("-"): ord("_")})
1264
self.dbus_object_path = dbus.ObjectPath(
1265
"/clients/" + client_object_name)
709
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1266
712
DBusObjectWithProperties.__init__(self, self.bus,
1267
713
self.dbus_object_path)
1268
714
1269
def notifychangeproperty(transform_func, dbus_name,
1270
type_func=lambda x: x,
1271
variant_level=1,
1272
invalidate_only=False,
1273
_interface=_interface):
1274
""" Modify a variable so that it's a property which announces
1275
its changes to DBus.
1276
1277
transform_fun: Function that takes a value and a variant_level
1278
and transforms it to a D-Bus type.
1279
dbus_name: D-Bus name of the variable
1280
type_func: Function that transform the value before sending it
1281
to the D-Bus. Default: no transform
1282
variant_level: D-Bus variant level. Default: 1
1283
"""
1284
attrname = "_{}".format(dbus_name)
1285
1286
def setter(self, value):
1287
if hasattr(self, "dbus_object_path"):
1288
if (not hasattr(self, attrname) or
1289
type_func(getattr(self, attrname, None))
1290
!= type_func(value)):
1291
if invalidate_only:
1292
self.PropertiesChanged(
1293
_interface, dbus.Dictionary(),
1294
dbus.Array((dbus_name, )))
1295
else:
1296
dbus_value = transform_func(
1297
type_func(value),
1298
variant_level = variant_level)
1299
self.PropertyChanged(dbus.String(dbus_name),
1300
dbus_value)
1301
self.PropertiesChanged(
1302
_interface,
1303
dbus.Dictionary({ dbus.String(dbus_name):
1304
dbus_value }),
1305
dbus.Array())
1306
setattr(self, attrname, value)
1307
1308
return property(lambda self: getattr(self, attrname), setter)
1309
1310
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1311
approvals_pending = notifychangeproperty(dbus.Boolean,
1312
"ApprovalPending",
1313
type_func = bool)
1314
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1315
last_enabled = notifychangeproperty(datetime_to_dbus,
1316
"LastEnabled")
1317
checker = notifychangeproperty(
1318
dbus.Boolean, "CheckerRunning",
1319
type_func = lambda checker: checker is not None)
1320
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1321
"LastCheckedOK")
1322
last_checker_status = notifychangeproperty(dbus.Int16,
1323
"LastCheckerStatus")
1324
last_approval_request = notifychangeproperty(
1325
datetime_to_dbus, "LastApprovalRequest")
1326
approved_by_default = notifychangeproperty(dbus.Boolean,
1327
"ApprovedByDefault")
1328
approval_delay = notifychangeproperty(
1329
dbus.UInt64, "ApprovalDelay",
1330
type_func = lambda td: td.total_seconds() * 1000)
1331
approval_duration = notifychangeproperty(
1332
dbus.UInt64, "ApprovalDuration",
1333
type_func = lambda td: td.total_seconds() * 1000)
1334
host = notifychangeproperty(dbus.String, "Host")
1335
timeout = notifychangeproperty(
1336
dbus.UInt64, "Timeout",
1337
type_func = lambda td: td.total_seconds() * 1000)
1338
extended_timeout = notifychangeproperty(
1339
dbus.UInt64, "ExtendedTimeout",
1340
type_func = lambda td: td.total_seconds() * 1000)
1341
interval = notifychangeproperty(
1342
dbus.UInt64, "Interval",
1343
type_func = lambda td: td.total_seconds() * 1000)
1344
checker_command = notifychangeproperty(dbus.String, "Checker")
1345
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1346
invalidate_only=True)
1347
1348
del notifychangeproperty
715
@staticmethod
716
def _datetime_to_dbus(dt, variant_level=0):
717
"""Convert a UTC datetime.datetime() to a D-Bus type."""
718
return dbus.String(dt.isoformat(),
719
variant_level=variant_level)
720
721
def enable(self):
722
oldstate = getattr(self, u"enabled", False)
723
r = Client.enable(self)
724
if oldstate != self.enabled:
725
# Emit D-Bus signals
726
self.PropertyChanged(dbus.String(u"enabled"),
727
dbus.Boolean(True, variant_level=1))
728
self.PropertyChanged(
729
dbus.String(u"last_enabled"),
730
self._datetime_to_dbus(self.last_enabled,
731
variant_level=1))
732
return r
733
734
def disable(self, quiet = False):
735
oldstate = getattr(self, u"enabled", False)
736
r = Client.disable(self, quiet=quiet)
737
if not quiet and oldstate != self.enabled:
738
# Emit D-Bus signal
739
self.PropertyChanged(dbus.String(u"enabled"),
740
dbus.Boolean(False, variant_level=1))
741
return r
1349
742
1350
743
def __del__(self, *args, **kwargs):
1351
744
try:
1352
745
self.remove_from_connection()
1353
746
except LookupError:
1354
747
pass
1355
if hasattr(DBusObjectWithProperties, "__del__"):
748
if hasattr(DBusObjectWithProperties, u"__del__"):
1356
749
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1357
750
Client.__del__(self, *args, **kwargs)
1358
751
1359
def checker_callback(self, source, condition,
1360
connection, command, *args, **kwargs):
1361
ret = Client.checker_callback(self, source, condition,
1362
connection, command, *args,
1363
**kwargs)
1364
exitstatus = self.last_checker_status
1365
if exitstatus >= 0:
752
def checker_callback(self, pid, condition, command,
753
*args, **kwargs):
754
self.checker_callback_tag = None
755
self.checker = None
756
# Emit D-Bus signal
757
self.PropertyChanged(dbus.String(u"checker_running"),
758
dbus.Boolean(False, variant_level=1))
759
if os.WIFEXITED(condition):
760
exitstatus = os.WEXITSTATUS(condition)
1366
761
# Emit D-Bus signal
1367
762
self.CheckerCompleted(dbus.Int16(exitstatus),
1368
dbus.Int64(0),
763
dbus.Int64(condition),
1369
764
dbus.String(command))
1370
765
else:
1371
766
# Emit D-Bus signal
1372
767
self.CheckerCompleted(dbus.Int16(-1),
1373
dbus.Int64(
1374
self.last_checker_signal),
768
dbus.Int64(condition),
1375
769
dbus.String(command))
1376
return ret
770
771
return Client.checker_callback(self, pid, condition, command,
772
*args, **kwargs)
773
774
def checked_ok(self, *args, **kwargs):
775
r = Client.checked_ok(self, *args, **kwargs)
776
# Emit D-Bus signal
777
self.PropertyChanged(
778
dbus.String(u"last_checked_ok"),
779
(self._datetime_to_dbus(self.last_checked_ok,
780
variant_level=1)))
781
return r
1377
782
1378
783
def start_checker(self, *args, **kwargs):
1379
old_checker_pid = getattr(self.checker, "pid", None)
784
old_checker = self.checker
785
if self.checker is not None:
786
old_checker_pid = self.checker.pid
787
else:
788
old_checker_pid = None
1380
789
r = Client.start_checker(self, *args, **kwargs)
1381
790
# Only if new checker process was started
1382
791
if (self.checker is not None
1383
792
and old_checker_pid != self.checker.pid):
1384
793
# Emit D-Bus signal
1385
794
self.CheckerStarted(self.current_checker_command)
795
self.PropertyChanged(
796
dbus.String(u"checker_running"),
797
dbus.Boolean(True, variant_level=1))
1386
798
return r
1387
799
800
def stop_checker(self, *args, **kwargs):
801
old_checker = getattr(self, u"checker", None)
802
r = Client.stop_checker(self, *args, **kwargs)
803
if (old_checker is not None
804
and getattr(self, u"checker", None) is None):
805
self.PropertyChanged(dbus.String(u"checker_running"),
806
dbus.Boolean(False, variant_level=1))
807
return r
808
1388
809
def _reset_approved(self):
1389
self.approved = None
810
self._approved = None
1390
811
return False
1391
812
1392
813
def approve(self, value=True):
1393
self.approved = value
1394
gobject.timeout_add(int(self.approval_duration.total_seconds()
1395
* 1000), self._reset_approved)
1396
self.send_changedstate()
814
self._approved = value
815
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
816
817
def approved_pending(self):
818
return self.approvals_pending > 0
819
1397
820
1398
821
## D-Bus methods, signals & properties
1399
1400
## Interfaces
822
_interface = u"se.bsnet.fukt.Mandos.Client"
1401
823
1402
824
## Signals
1403
825
1404
826
# CheckerCompleted - signal
1405
@dbus.service.signal(_interface, signature="nxs")
827
@dbus.service.signal(_interface, signature=u"nxs")
1406
828
def CheckerCompleted(self, exitcode, waitstatus, command):
1407
829
"D-Bus signal"
1408
830
pass
1409
831
1410
832
# CheckerStarted - signal
1411
@dbus.service.signal(_interface, signature="s")
833
@dbus.service.signal(_interface, signature=u"s")
1412
834
def CheckerStarted(self, command):
1413
835
"D-Bus signal"
1414
836
pass
1415
837
1416
838
# PropertyChanged - signal
1417
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1418
@dbus.service.signal(_interface, signature="sv")
839
@dbus.service.signal(_interface, signature=u"sv")
1419
840
def PropertyChanged(self, property, value):
1420
841
"D-Bus signal"
1421
842
pass
1423
844
# GotSecret - signal
1424
845
@dbus.service.signal(_interface)
1425
846
def GotSecret(self):
1426
"""D-Bus signal
1427
Is sent after a successful transfer of secret from the Mandos
1428
server to mandos-client
1429
"""
1430
pass
847
"D-Bus signal"
848
if self.approved_pending():
849
self.PropertyChanged(dbus.String(u"checker_running"),
850
dbus.Boolean(False, variant_level=1))
1431
851
1432
852
# Rejected - signal
1433
@dbus.service.signal(_interface, signature="s")
853
@dbus.service.signal(_interface, signature=u"s")
1434
854
def Rejected(self, reason):
1435
855
"D-Bus signal"
1436
pass
856
if self.approved_pending():
857
self.PropertyChanged(dbus.String(u"checker_running"),
858
dbus.Boolean(False, variant_level=1))
1437
859
1438
860
# NeedApproval - signal
1439
@dbus.service.signal(_interface, signature="tb")
861
@dbus.service.signal(_interface, signature=u"db")
1440
862
def NeedApproval(self, timeout, default):
1441
863
"D-Bus signal"
1442
return self.need_approval()
864
if not self.approved_pending():
865
self.PropertyChanged(dbus.String(u"approved_pending"),
866
dbus.Boolean(True, variant_level=1))
1443
867
1444
868
## Methods
1445
869
1446
870
# Approve - method
1447
@dbus.service.method(_interface, in_signature="b")
871
@dbus.service.method(_interface, in_signature=u"b")
1448
872
def Approve(self, value):
1449
873
self.approve(value)
1450
874
1451
875
# CheckedOK - method
1452
876
@dbus.service.method(_interface)
1453
877
def CheckedOK(self):
1454
self.checked_ok()
878
return self.checked_ok()
1455
879
1456
880
# Enable - method
1457
881
@dbus.service.method(_interface)
1478
902
1479
903
## Properties
1480
904
1481
# ApprovalPending - property
1482
@dbus_service_property(_interface, signature="b", access="read")
1483
def ApprovalPending_dbus_property(self):
1484
return dbus.Boolean(bool(self.approvals_pending))
1485
1486
# ApprovedByDefault - property
1487
@dbus_service_property(_interface,
1488
signature="b",
1489
access="readwrite")
1490
def ApprovedByDefault_dbus_property(self, value=None):
1491
if value is None: # get
1492
return dbus.Boolean(self.approved_by_default)
1493
self.approved_by_default = bool(value)
1494
1495
# ApprovalDelay - property
1496
@dbus_service_property(_interface,
1497
signature="t",
1498
access="readwrite")
1499
def ApprovalDelay_dbus_property(self, value=None):
1500
if value is None: # get
1501
return dbus.UInt64(self.approval_delay.total_seconds()
1502
* 1000)
1503
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1504
1505
# ApprovalDuration - property
1506
@dbus_service_property(_interface,
1507
signature="t",
1508
access="readwrite")
1509
def ApprovalDuration_dbus_property(self, value=None):
1510
if value is None: # get
1511
return dbus.UInt64(self.approval_duration.total_seconds()
1512
* 1000)
1513
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1514
1515
# Name - property
1516
@dbus_service_property(_interface, signature="s", access="read")
1517
def Name_dbus_property(self):
905
# approved_pending - property
906
@dbus_service_property(_interface, signature=u"b", access=u"read")
907
def approved_pending_dbus_property(self):
908
return dbus.Boolean(self.approved_pending())
909
910
# approved_by_default - property
911
@dbus_service_property(_interface, signature=u"b",
912
access=u"readwrite")
913
def approved_by_default_dbus_property(self):
914
return dbus.Boolean(self.approved_by_default)
915
916
# approved_delay - property
917
@dbus_service_property(_interface, signature=u"t",
918
access=u"readwrite")
919
def approved_delay_dbus_property(self):
920
return dbus.UInt64(self.approved_delay_milliseconds())
921
922
# approved_duration - property
923
@dbus_service_property(_interface, signature=u"t",
924
access=u"readwrite")
925
def approved_duration_dbus_property(self):
926
return dbus.UInt64(self._timedelta_to_milliseconds(
927
self.approved_duration))
928
929
# name - property
930
@dbus_service_property(_interface, signature=u"s", access=u"read")
931
def name_dbus_property(self):
1518
932
return dbus.String(self.name)
1519
933
1520
# Fingerprint - property
1521
@dbus_service_property(_interface, signature="s", access="read")
1522
def Fingerprint_dbus_property(self):
934
# fingerprint - property
935
@dbus_service_property(_interface, signature=u"s", access=u"read")
936
def fingerprint_dbus_property(self):
1523
937
return dbus.String(self.fingerprint)
1524
938
1525
# Host - property
1526
@dbus_service_property(_interface,
1527
signature="s",
1528
access="readwrite")
1529
def Host_dbus_property(self, value=None):
939
# host - property
940
@dbus_service_property(_interface, signature=u"s",
941
access=u"readwrite")
942
def host_dbus_property(self, value=None):
1530
943
if value is None: # get
1531
944
return dbus.String(self.host)
1532
self.host = str(value)
1533
1534
# Created - property
1535
@dbus_service_property(_interface, signature="s", access="read")
1536
def Created_dbus_property(self):
1537
return datetime_to_dbus(self.created)
1538
1539
# LastEnabled - property
1540
@dbus_service_property(_interface, signature="s", access="read")
1541
def LastEnabled_dbus_property(self):
1542
return datetime_to_dbus(self.last_enabled)
1543
1544
# Enabled - property
1545
@dbus_service_property(_interface,
1546
signature="b",
1547
access="readwrite")
1548
def Enabled_dbus_property(self, value=None):
945
self.host = value
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"host"),
948
dbus.String(value, variant_level=1))
949
950
# created - property
951
@dbus_service_property(_interface, signature=u"s", access=u"read")
952
def created_dbus_property(self):
953
return dbus.String(self._datetime_to_dbus(self.created))
954
955
# last_enabled - property
956
@dbus_service_property(_interface, signature=u"s", access=u"read")
957
def last_enabled_dbus_property(self):
958
if self.last_enabled is None:
959
return dbus.String(u"")
960
return dbus.String(self._datetime_to_dbus(self.last_enabled))
961
962
# enabled - property
963
@dbus_service_property(_interface, signature=u"b",
964
access=u"readwrite")
965
def enabled_dbus_property(self, value=None):
1549
966
if value is None: # get
1550
967
return dbus.Boolean(self.enabled)
1551
968
if value:
1553
970
else:
1554
971
self.disable()
1555
972
1556
# LastCheckedOK - property
1557
@dbus_service_property(_interface,
1558
signature="s",
1559
access="readwrite")
1560
def LastCheckedOK_dbus_property(self, value=None):
973
# last_checked_ok - property
974
@dbus_service_property(_interface, signature=u"s",
975
access=u"readwrite")
976
def last_checked_ok_dbus_property(self, value=None):
1561
977
if value is not None:
1562
978
self.checked_ok()
1563
979
return
1564
return datetime_to_dbus(self.last_checked_ok)
1565
1566
# LastCheckerStatus - property
1567
@dbus_service_property(_interface, signature="n", access="read")
1568
def LastCheckerStatus_dbus_property(self):
1569
return dbus.Int16(self.last_checker_status)
1570
1571
# Expires - property
1572
@dbus_service_property(_interface, signature="s", access="read")
1573
def Expires_dbus_property(self):
1574
return datetime_to_dbus(self.expires)
1575
1576
# LastApprovalRequest - property
1577
@dbus_service_property(_interface, signature="s", access="read")
1578
def LastApprovalRequest_dbus_property(self):
1579
return datetime_to_dbus(self.last_approval_request)
1580
1581
# Timeout - property
1582
@dbus_service_property(_interface,
1583
signature="t",
1584
access="readwrite")
1585
def Timeout_dbus_property(self, value=None):
980
if self.last_checked_ok is None:
981
return dbus.String(u"")
982
return dbus.String(self._datetime_to_dbus(self
983
.last_checked_ok))
984
985
# timeout - property
986
@dbus_service_property(_interface, signature=u"t",
987
access=u"readwrite")
988
def timeout_dbus_property(self, value=None):
1586
989
if value is None: # get
1587
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1588
old_timeout = self.timeout
990
return dbus.UInt64(self.timeout_milliseconds())
1589
991
self.timeout = datetime.timedelta(0, 0, 0, value)
1590
# Reschedule disabling
1591
if self.enabled:
1592
now = datetime.datetime.utcnow()
1593
self.expires += self.timeout - old_timeout
1594
if self.expires <= now:
1595
# The timeout has passed
1596
self.disable()
1597
else:
1598
if (getattr(self, "disable_initiator_tag", None)
1599
is None):
1600
return
1601
gobject.source_remove(self.disable_initiator_tag)
1602
self.disable_initiator_tag = gobject.timeout_add(
1603
int((self.expires - now).total_seconds() * 1000),
1604
self.disable)
1605
1606
# ExtendedTimeout - property
1607
@dbus_service_property(_interface,
1608
signature="t",
1609
access="readwrite")
1610
def ExtendedTimeout_dbus_property(self, value=None):
1611
if value is None: # get
1612
return dbus.UInt64(self.extended_timeout.total_seconds()
1613
* 1000)
1614
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1615
1616
# Interval - property
1617
@dbus_service_property(_interface,
1618
signature="t",
1619
access="readwrite")
1620
def Interval_dbus_property(self, value=None):
1621
if value is None: # get
1622
return dbus.UInt64(self.interval.total_seconds() * 1000)
992
# Emit D-Bus signal
993
self.PropertyChanged(dbus.String(u"timeout"),
994
dbus.UInt64(value, variant_level=1))
995
if getattr(self, u"disable_initiator_tag", None) is None:
996
return
997
# Reschedule timeout
998
gobject.source_remove(self.disable_initiator_tag)
999
self.disable_initiator_tag = None
1000
time_to_die = (self.
1001
_timedelta_to_milliseconds((self
1002
.last_checked_ok
1003
+ self.timeout)
1004
- datetime.datetime
1005
.utcnow()))
1006
if time_to_die <= 0:
1007
# The timeout has passed
1008
self.disable()
1009
else:
1010
self.disable_initiator_tag = (gobject.timeout_add
1011
(time_to_die, self.disable))
1012
1013
# interval - property
1014
@dbus_service_property(_interface, signature=u"t",
1015
access=u"readwrite")
1016
def interval_dbus_property(self, value=None):
1017
if value is None: # get
1018
return dbus.UInt64(self.interval_milliseconds())
1623
1019
self.interval = datetime.timedelta(0, 0, 0, value)
1624
if getattr(self, "checker_initiator_tag", None) is None:
1020
# Emit D-Bus signal
1021
self.PropertyChanged(dbus.String(u"interval"),
1022
dbus.UInt64(value, variant_level=1))
1023
if getattr(self, u"checker_initiator_tag", None) is None:
1625
1024
return
1626
if self.enabled:
1627
# Reschedule checker run
1628
gobject.source_remove(self.checker_initiator_tag)
1629
self.checker_initiator_tag = gobject.timeout_add(
1630
value, self.start_checker)
1631
self.start_checker() # Start one now, too
1632
1633
# Checker - property
1634
@dbus_service_property(_interface,
1635
signature="s",
1636
access="readwrite")
1637
def Checker_dbus_property(self, value=None):
1025
# Reschedule checker run
1026
gobject.source_remove(self.checker_initiator_tag)
1027
self.checker_initiator_tag = (gobject.timeout_add
1028
(value, self.start_checker))
1029
self.start_checker() # Start one now, too
1030
1031
# checker - property
1032
@dbus_service_property(_interface, signature=u"s",
1033
access=u"readwrite")
1034
def checker_dbus_property(self, value=None):
1638
1035
if value is None: # get
1639
1036
return dbus.String(self.checker_command)
1640
self.checker_command = str(value)
1037
self.checker_command = value
1038
# Emit D-Bus signal
1039
self.PropertyChanged(dbus.String(u"checker"),
1040
dbus.String(self.checker_command,
1041
variant_level=1))
1641
1042
1642
# CheckerRunning - property
1643
@dbus_service_property(_interface,
1644
signature="b",
1645
access="readwrite")
1646
def CheckerRunning_dbus_property(self, value=None):
1043
# checker_running - property
1044
@dbus_service_property(_interface, signature=u"b",
1045
access=u"readwrite")
1046
def checker_running_dbus_property(self, value=None):
1647
1047
if value is None: # get
1648
1048
return dbus.Boolean(self.checker is not None)
1649
1049
if value:
1651
1051
else:
1652
1052
self.stop_checker()
1653
1053
1654
# ObjectPath - property
1655
@dbus_service_property(_interface, signature="o", access="read")
1656
def ObjectPath_dbus_property(self):
1054
# object_path - property
1055
@dbus_service_property(_interface, signature=u"o", access=u"read")
1056
def object_path_dbus_property(self):
1657
1057
return self.dbus_object_path # is already a dbus.ObjectPath
1658
1058
1659
# Secret = property
1660
@dbus_service_property(_interface,
1661
signature="ay",
1662
access="write",
1663
byte_arrays=True)
1664
def Secret_dbus_property(self, value):
1665
self.secret = bytes(value)
1059
# secret = property
1060
@dbus_service_property(_interface, signature=u"ay",
1061
access=u"write", byte_arrays=True)
1062
def secret_dbus_property(self, value):
1063
self.secret = str(value)
1666
1064
1667
1065
del _interface
1668
1066
1672
1070
self._pipe = child_pipe
1673
1071
self._pipe.send(('init', fpr, address))
1674
1072
if not self._pipe.recv():
1675
raise KeyError(fpr)
1676
1073
raise KeyError()
1074
1677
1075
def __getattribute__(self, name):
1678
if name == '_pipe':
1076
if(name == '_pipe'):
1679
1077
return super(ProxyClient, self).__getattribute__(name)
1680
1078
self._pipe.send(('getattr', name))
1681
1079
data = self._pipe.recv()
1682
1080
if data[0] == 'data':
1683
1081
return data[1]
1684
1082
if data[0] == 'function':
1685
1686
1083
def func(*args, **kwargs):
1687
1084
self._pipe.send(('funcall', name, args, kwargs))
1688
1085
return self._pipe.recv()[1]
1689
1690
1086
return func
1691
1087
1692
1088
def __setattr__(self, name, value):
1693
if name == '_pipe':
1089
if(name == '_pipe'):
1694
1090
return super(ProxyClient, self).__setattr__(name, value)
1695
1091
self._pipe.send(('setattr', name, value))
1696
1092
1703
1099
1704
1100
def handle(self):
1705
1101
with contextlib.closing(self.server.child_pipe) as child_pipe:
1706
logger.info("TCP connection from: %s",
1707
str(self.client_address))
1708
logger.debug("Pipe FD: %d",
1102
logger.info(u"TCP connection from: %s",
1103
unicode(self.client_address))
1104
logger.debug(u"Pipe FD: %d",
1709
1105
self.server.child_pipe.fileno())
1710
1711
session = gnutls.connection.ClientSession(
1712
self.request, gnutls.connection .X509Credentials())
1713
1106
1107
session = (gnutls.connection
1108
.ClientSession(self.request,
1109
gnutls.connection
1110
.X509Credentials()))
1111
1714
1112
# Note: gnutls.connection.X509Credentials is really a
1715
1113
# generic GnuTLS certificate credentials object so long as
1716
1114
# no X.509 keys are added to it. Therefore, we can use it
1717
1115
# here despite using OpenPGP certificates.
1718
1719
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1720
# "+AES-256-CBC", "+SHA1",
1721
# "+COMP-NULL", "+CTYPE-OPENPGP",
1722
# "+DHE-DSS"))
1116
1117
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1118
# u"+AES-256-CBC", u"+SHA1",
1119
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1120
# u"+DHE-DSS"))
1723
1121
# Use a fallback default, since this MUST be set.
1724
1122
priority = self.server.gnutls_priority
1725
1123
if priority is None:
1726
priority = "NORMAL"
1727
gnutls.library.functions.gnutls_priority_set_direct(
1728
session._c_object, priority, None)
1729
1124
priority = u"NORMAL"
1125
(gnutls.library.functions
1126
.gnutls_priority_set_direct(session._c_object,
1127
priority, None))
1128
1730
1129
# Start communication using the Mandos protocol
1731
1130
# Get protocol number
1732
1131
line = self.request.makefile().readline()
1733
logger.debug("Protocol version: %r", line)
1132
logger.debug(u"Protocol version: %r", line)
1734
1133
try:
1735
1134
if int(line.strip().split()[0]) > 1:
1736
raise RuntimeError(line)
1737
except (ValueError, IndexError, RuntimeError) as error:
1738
logger.error("Unknown protocol version: %s", error)
1135
raise RuntimeError
1136
except (ValueError, IndexError, RuntimeError), error:
1137
logger.error(u"Unknown protocol version: %s", error)
1739
1138
return
1740
1139
1741
1140
# Start GnuTLS connection
1742
1141
try:
1743
1142
session.handshake()
1744
except gnutls.errors.GNUTLSError as error:
1745
logger.warning("Handshake failed: %s", error)
1143
except gnutls.errors.GNUTLSError, error:
1144
logger.warning(u"Handshake failed: %s", error)
1746
1145
# Do not run session.bye() here: the session is not
1747
1146
# established. Just abandon the request.
1748
1147
return
1749
logger.debug("Handshake succeeded")
1750
1148
logger.debug(u"Handshake succeeded")
1149
1751
1150
approval_required = False
1752
1151
try:
1753
1152
try:
1754
fpr = self.fingerprint(
1755
self.peer_certificate(session))
1756
except (TypeError,
1757
gnutls.errors.GNUTLSError) as error:
1758
logger.warning("Bad certificate: %s", error)
1153
fpr = self.fingerprint(self.peer_certificate
1154
(session))
1155
except (TypeError, gnutls.errors.GNUTLSError), error:
1156
logger.warning(u"Bad certificate: %s", error)
1759
1157
return
1760
logger.debug("Fingerprint: %s", fpr)
1761
1158
logger.debug(u"Fingerprint: %s", fpr)
1159
1762
1160
try:
1763
1161
client = ProxyClient(child_pipe, fpr,
1764
1162
self.client_address)
1765
1163
except KeyError:
1766
1164
return
1767
1165
1768
if client.approval_delay:
1769
delay = client.approval_delay
1166
if client.approved_delay:
1167
delay = client.approved_delay
1770
1168
client.approvals_pending += 1
1771
1169
approval_required = True
1772
1170
1773
1171
while True:
1774
1172
if not client.enabled:
1775
logger.info("Client %s is disabled",
1776
client.name)
1173
logger.warning(u"Client %s is disabled",
1174
client.name)
1777
1175
if self.server.use_dbus:
1778
1176
# Emit D-Bus signal
1779
client.Rejected("Disabled")
1177
client.Rejected("Disabled")
1780
1178
return
1781
1179
1782
if client.approved or not client.approval_delay:
1180
if client._approved or not client.approved_delay:
1783
1181
#We are approved or approval is disabled
1784
1182
break
1785
elif client.approved is None:
1786
logger.info("Client %s needs approval",
1183
elif client._approved is None:
1184
logger.info(u"Client %s need approval",
1787
1185
client.name)
1788
1186
if self.server.use_dbus:
1789
1187
# Emit D-Bus signal
1790
1188
client.NeedApproval(
1791
client.approval_delay.total_seconds()
1792
* 1000, client.approved_by_default)
1189
client.approved_delay_milliseconds(),
1190
client.approved_by_default)
1793
1191
else:
1794
logger.warning("Client %s was not approved",
1192
logger.warning(u"Client %s was not approved",
1795
1193
client.name)
1796
1194
if self.server.use_dbus:
1797
1195
# Emit D-Bus signal
1798
client.Rejected("Denied")
1196
client.Rejected("Disapproved")
1799
1197
return
1800
1198
1801
1199
#wait until timeout or approved
1200
#x = float(client._timedelta_to_milliseconds(delay))
1802
1201
time = datetime.datetime.now()
1803
1202
client.changedstate.acquire()
1804
client.changedstate.wait(delay.total_seconds())
1203
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1805
1204
client.changedstate.release()
1806
1205
time2 = datetime.datetime.now()
1807
1206
if (time2 - time) >= delay:
1811
1210
client.name)
1812
1211
if self.server.use_dbus:
1813
1212
# Emit D-Bus signal
1814
client.Rejected("Approval timed out")
1213
client.Rejected("Time out")
1815
1214
return
1816
1215
else:
1817
1216
break
1820
1219
1821
1220
sent_size = 0
1822
1221
while sent_size < len(client.secret):
1823
try:
1824
sent = session.send(client.secret[sent_size:])
1825
except gnutls.errors.GNUTLSError as error:
1826
logger.warning("gnutls send failed",
1827
exc_info=error)
1828
return
1829
logger.debug("Sent: %d, remaining: %d", sent,
1830
len(client.secret) - (sent_size
1831
+ sent))
1222
# XXX handle session exception
1223
sent = session.send(client.secret[sent_size:])
1224
logger.debug(u"Sent: %d, remaining: %d",
1225
sent, len(client.secret)
1226
- (sent_size + sent))
1832
1227
sent_size += sent
1833
1834
logger.info("Sending secret to %s", client.name)
1835
# bump the timeout using extended_timeout
1836
client.bump_timeout(client.extended_timeout)
1228
1229
logger.info(u"Sending secret to %s", client.name)
1230
# bump the timeout as if seen
1231
client.checked_ok()
1837
1232
if self.server.use_dbus:
1838
1233
# Emit D-Bus signal
1839
1234
client.GotSecret()
1841
1236
finally:
1842
1237
if approval_required:
1843
1238
client.approvals_pending -= 1
1844
try:
1845
session.bye()
1846
except gnutls.errors.GNUTLSError as error:
1847
logger.warning("GnuTLS bye failed",
1848
exc_info=error)
1239
session.bye()
1849
1240
1850
1241
@staticmethod
1851
1242
def peer_certificate(session):
1852
1243
"Return the peer's OpenPGP certificate as a bytestring"
1853
1244
# If not an OpenPGP certificate...
1854
if (gnutls.library.functions.gnutls_certificate_type_get(
1855
session._c_object)
1245
if (gnutls.library.functions
1246
.gnutls_certificate_type_get(session._c_object)
1856
1247
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1857
1248
# ...do the normal thing
1858
1249
return session.peer_certificate
1861
1252
.gnutls_certificate_get_peers
1862
1253
(session._c_object, ctypes.byref(list_size)))
1863
1254
if not bool(cert_list) and list_size.value != 0:
1864
raise gnutls.errors.GNUTLSError("error getting peer"
1865
" certificate")
1255
raise gnutls.errors.GNUTLSError(u"error getting peer"
1256
u" certificate")
1866
1257
if list_size.value == 0:
1867
1258
return None
1868
1259
cert = cert_list[0]
1872
1263
def fingerprint(openpgp):
1873
1264
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1874
1265
# New GnuTLS "datum" with the OpenPGP public key
1875
datum = gnutls.library.types.gnutls_datum_t(
1876
ctypes.cast(ctypes.c_char_p(openpgp),
1877
ctypes.POINTER(ctypes.c_ubyte)),
1878
ctypes.c_uint(len(openpgp)))
1266
datum = (gnutls.library.types
1267
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1268
ctypes.POINTER
1269
(ctypes.c_ubyte)),
1270
ctypes.c_uint(len(openpgp))))
1879
1271
# New empty GnuTLS certificate
1880
1272
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1881
gnutls.library.functions.gnutls_openpgp_crt_init(
1882
ctypes.byref(crt))
1273
(gnutls.library.functions
1274
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1883
1275
# Import the OpenPGP public key into the certificate
1884
gnutls.library.functions.gnutls_openpgp_crt_import(
1885
crt, ctypes.byref(datum),
1886
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1276
(gnutls.library.functions
1277
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1278
gnutls.library.constants
1279
.GNUTLS_OPENPGP_FMT_RAW))
1887
1280
# Verify the self signature in the key
1888
1281
crtverify = ctypes.c_uint()
1889
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1890
crt, 0, ctypes.byref(crtverify))
1282
(gnutls.library.functions
1283
.gnutls_openpgp_crt_verify_self(crt, 0,
1284
ctypes.byref(crtverify)))
1891
1285
if crtverify.value != 0:
1892
1286
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1893
raise gnutls.errors.CertificateSecurityError(
1894
"Verify failed")
1287
raise (gnutls.errors.CertificateSecurityError
1288
(u"Verify failed"))
1895
1289
# New buffer for the fingerprint
1896
1290
buf = ctypes.create_string_buffer(20)
1897
1291
buf_len = ctypes.c_size_t()
1898
1292
# Get the fingerprint from the certificate into the buffer
1899
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1900
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1293
(gnutls.library.functions
1294
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1295
ctypes.byref(buf_len)))
1901
1296
# Deinit the certificate
1902
1297
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1903
1298
# Convert the buffer to a Python bytestring
1904
1299
fpr = ctypes.string_at(buf, buf_len.value)
1905
1300
# Convert the bytestring to hexadecimal notation
1906
hex_fpr = binascii.hexlify(fpr).upper()
1301
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1907
1302
return hex_fpr
1908
1303
1909
1304
1910
1305
class MultiprocessingMixIn(object):
1911
1306
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1912
1913
1307
def sub_process_main(self, request, address):
1914
1308
try:
1915
1309
self.finish_request(request, address)
1916
except Exception:
1310
except:
1917
1311
self.handle_error(request, address)
1918
1312
self.close_request(request)
1919
1313
1920
1314
def process_request(self, request, address):
1921
1315
"""Start a new process to process the request."""
1922
proc = multiprocessing.Process(target = self.sub_process_main,
1923
args = (request, address))
1924
proc.start()
1925
return proc
1926
1316
multiprocessing.Process(target = self.sub_process_main,
1317
args = (request, address)).start()
1927
1318
1928
1319
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1929
1320
""" adds a pipe to the MixIn """
1930
1931
1321
def process_request(self, request, client_address):
1932
1322
"""Overrides and wraps the original process_request().
1933
1323
1934
1324
This function creates a new pipe in self.pipe
1935
1325
"""
1936
1326
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1937
1938
proc = MultiprocessingMixIn.process_request(self, request,
1939
client_address)
1940
self.child_pipe.close()
1941
self.add_pipe(parent_pipe, proc)
1942
1943
def add_pipe(self, parent_pipe, proc):
1327
1328
super(MultiprocessingMixInWithPipe,
1329
self).process_request(request, client_address)
1330
self.add_pipe(parent_pipe)
1331
def add_pipe(self, parent_pipe):
1944
1332
"""Dummy function; override as necessary"""
1945
raise NotImplementedError()
1946
1333
pass
1947
1334
1948
1335
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1949
1336
socketserver.TCPServer, object):
1954
1341
interface: None or a network interface name (string)
1955
1342
use_ipv6: Boolean; to use IPv6 or not
1956
1343
"""
1957
1958
1344
def __init__(self, server_address, RequestHandlerClass,
1959
interface=None,
1960
use_ipv6=True,
1961
socketfd=None):
1962
"""If socketfd is set, use that file descriptor instead of
1963
creating a new one with socket.socket().
1964
"""
1345
interface=None, use_ipv6=True):
1965
1346
self.interface = interface
1966
1347
if use_ipv6:
1967
1348
self.address_family = socket.AF_INET6
1968
if socketfd is not None:
1969
# Save the file descriptor
1970
self.socketfd = socketfd
1971
# Save the original socket.socket() function
1972
self.socket_socket = socket.socket
1973
# To implement --socket, we monkey patch socket.socket.
1974
#
1975
# (When socketserver.TCPServer is a new-style class, we
1976
# could make self.socket into a property instead of monkey
1977
# patching socket.socket.)
1978
#
1979
# Create a one-time-only replacement for socket.socket()
1980
@functools.wraps(socket.socket)
1981
def socket_wrapper(*args, **kwargs):
1982
# Restore original function so subsequent calls are
1983
# not affected.
1984
socket.socket = self.socket_socket
1985
del self.socket_socket
1986
# This time only, return a new socket object from the
1987
# saved file descriptor.
1988
return socket.fromfd(self.socketfd, *args, **kwargs)
1989
# Replace socket.socket() function with wrapper
1990
socket.socket = socket_wrapper
1991
# The socketserver.TCPServer.__init__ will call
1992
# socket.socket(), which might be our replacement,
1993
# socket_wrapper(), if socketfd was set.
1994
1349
socketserver.TCPServer.__init__(self, server_address,
1995
1350
RequestHandlerClass)
1996
1997
1351
def server_bind(self):
1998
1352
"""This overrides the normal server_bind() function
1999
1353
to bind to an interface if one was specified, and also NOT to
2000
1354
bind to an address or port if they were not specified."""
2001
1355
if self.interface is not None:
2002
1356
if SO_BINDTODEVICE is None:
2003
logger.error("SO_BINDTODEVICE does not exist;"
2004
" cannot bind to interface %s",
1357
logger.error(u"SO_BINDTODEVICE does not exist;"
1358
u" cannot bind to interface %s",
2005
1359
self.interface)
2006
1360
else:
2007
1361
try:
2008
self.socket.setsockopt(
2009
socket.SOL_SOCKET, SO_BINDTODEVICE,
2010
(self.interface + "\0").encode("utf-8"))
2011
except socket.error as error:
2012
if error.errno == errno.EPERM:
2013
logger.error("No permission to bind to"
2014
" interface %s", self.interface)
2015
elif error.errno == errno.ENOPROTOOPT:
2016
logger.error("SO_BINDTODEVICE not available;"
2017
" cannot bind to interface %s",
2018
self.interface)
2019
elif error.errno == errno.ENODEV:
2020
logger.error("Interface %s does not exist,"
2021
" cannot bind", self.interface)
1362
self.socket.setsockopt(socket.SOL_SOCKET,
1363
SO_BINDTODEVICE,
1364
str(self.interface
1365
+ u'\0'))
1366
except socket.error, error:
1367
if error[0] == errno.EPERM:
1368
logger.error(u"No permission to"
1369
u" bind to interface %s",
1370
self.interface)
1371
elif error[0] == errno.ENOPROTOOPT:
1372
logger.error(u"SO_BINDTODEVICE not available;"
1373
u" cannot bind to interface %s",
1374
self.interface)
2022
1375
else:
2023
1376
raise
2024
1377
# Only bind(2) the socket if we really need to.
2025
1378
if self.server_address[0] or self.server_address[1]:
2026
1379
if not self.server_address[0]:
2027
1380
if self.address_family == socket.AF_INET6:
2028
any_address = "::" # in6addr_any
1381
any_address = u"::" # in6addr_any
2029
1382
else:
2030
any_address = "0.0.0.0" # INADDR_ANY
1383
any_address = socket.INADDR_ANY
2031
1384
self.server_address = (any_address,
2032
1385
self.server_address[1])
2033
1386
elif not self.server_address[1]:
2034
self.server_address = (self.server_address[0], 0)
1387
self.server_address = (self.server_address[0],
1388
0)
2035
1389
# if self.interface:
2036
1390
# self.server_address = (self.server_address[0],
2037
1391
# 0, # port
2051
1405
2052
1406
Assumes a gobject.MainLoop event loop.
2053
1407
"""
2054
2055
1408
def __init__(self, server_address, RequestHandlerClass,
2056
interface=None,
2057
use_ipv6=True,
2058
clients=None,
2059
gnutls_priority=None,
2060
use_dbus=True,
2061
socketfd=None):
1409
interface=None, use_ipv6=True, clients=None,
1410
gnutls_priority=None, use_dbus=True):
2062
1411
self.enabled = False
2063
1412
self.clients = clients
2064
1413
if self.clients is None:
2065
self.clients = {}
1414
self.clients = set()
2066
1415
self.use_dbus = use_dbus
2067
1416
self.gnutls_priority = gnutls_priority
2068
1417
IPv6_TCPServer.__init__(self, server_address,
2069
1418
RequestHandlerClass,
2070
1419
interface = interface,
2071
use_ipv6 = use_ipv6,
2072
socketfd = socketfd)
2073
1420
use_ipv6 = use_ipv6)
2074
1421
def server_activate(self):
2075
1422
if self.enabled:
2076
1423
return socketserver.TCPServer.server_activate(self)
2077
2078
1424
def enable(self):
2079
1425
self.enabled = True
2080
2081
def add_pipe(self, parent_pipe, proc):
1426
def add_pipe(self, parent_pipe):
2082
1427
# Call "handle_ipc" for both data and EOF events
2083
gobject.io_add_watch(
2084
parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2086
functools.partial(self.handle_ipc,
2087
parent_pipe = parent_pipe,
2088
proc = proc))
2089
2090
def handle_ipc(self, source, condition,
2091
parent_pipe=None,
2092
proc = None,
1428
gobject.io_add_watch(parent_pipe.fileno(),
1429
gobject.IO_IN | gobject.IO_HUP,
1430
functools.partial(self.handle_ipc,
1431
parent_pipe = parent_pipe))
1432
1433
def handle_ipc(self, source, condition, parent_pipe=None,
2093
1434
client_object=None):
2094
# error, or the other end of multiprocessing.Pipe has closed
2095
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2096
# Wait for other process to exit
2097
proc.join()
2098
return False
1435
condition_names = {
1436
gobject.IO_IN: u"IN", # There is data to read.
1437
gobject.IO_OUT: u"OUT", # Data can be written (without
1438
# blocking).
1439
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1440
gobject.IO_ERR: u"ERR", # Error condition.
1441
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1442
# broken, usually for pipes and
1443
# sockets).
1444
}
1445
conditions_string = ' | '.join(name
1446
for cond, name in
1447
condition_names.iteritems()
1448
if cond & condition)
1449
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1450
conditions_string)
2099
1451
2100
1452
# Read a request from the child
2101
1453
request = parent_pipe.recv()
2105
1457
fpr = request[1]
2106
1458
address = request[2]
2107
1459
2108
for c in self.clients.itervalues():
1460
for c in self.clients:
2109
1461
if c.fingerprint == fpr:
2110
1462
client = c
2111
1463
break
2112
1464
else:
2113
logger.info("Client not found for fingerprint: %s, ad"
2114
"dress: %s", fpr, address)
1465
logger.warning(u"Client not found for fingerprint: %s, ad"
1466
u"dress: %s", fpr, address)
2115
1467
if self.use_dbus:
2116
1468
# Emit D-Bus signal
2117
mandos_dbus_service.ClientNotFound(fpr,
2118
address[0])
1469
mandos_dbus_service.ClientNotFound(fpr, address)
2119
1470
parent_pipe.send(False)
2120
1471
return False
2121
1472
2122
gobject.io_add_watch(
2123
parent_pipe.fileno(),
2124
gobject.IO_IN | gobject.IO_HUP,
2125
functools.partial(self.handle_ipc,
2126
parent_pipe = parent_pipe,
2127
proc = proc,
2128
client_object = client))
1473
gobject.io_add_watch(parent_pipe.fileno(),
1474
gobject.IO_IN | gobject.IO_HUP,
1475
functools.partial(self.handle_ipc,
1476
parent_pipe = parent_pipe,
1477
client_object = client))
2129
1478
parent_pipe.send(True)
2130
# remove the old hook in favor of the new above hook on
2131
# same fileno
1479
# remove the old hook in favor of the new above hook on same fileno
2132
1480
return False
2133
1481
if command == 'funcall':
2134
1482
funcname = request[1]
2135
1483
args = request[2]
2136
1484
kwargs = request[3]
2137
1485
2138
parent_pipe.send(('data', getattr(client_object,
2139
funcname)(*args,
2140
**kwargs)))
2141
1486
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1487
2142
1488
if command == 'getattr':
2143
1489
attrname = request[1]
2144
if isinstance(client_object.__getattribute__(attrname),
2145
collections.Callable):
2146
parent_pipe.send(('function', ))
1490
if callable(client_object.__getattribute__(attrname)):
1491
parent_pipe.send(('function',))
2147
1492
else:
2148
parent_pipe.send((
2149
'data', client_object.__getattribute__(attrname)))
2150
1493
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1494
2151
1495
if command == 'setattr':
2152
1496
attrname = request[1]
2153
1497
value = request[2]
2154
1498
setattr(client_object, attrname, value)
2155
1499
2156
1500
return True
2157
1501
2158
1502
2159
def rfc3339_duration_to_delta(duration):
2160
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2161
2162
>>> rfc3339_duration_to_delta("P7D")
2163
datetime.timedelta(7)
2164
>>> rfc3339_duration_to_delta("PT60S")
2165
datetime.timedelta(0, 60)
2166
>>> rfc3339_duration_to_delta("PT60M")
2167
datetime.timedelta(0, 3600)
2168
>>> rfc3339_duration_to_delta("PT24H")
2169
datetime.timedelta(1)
2170
>>> rfc3339_duration_to_delta("P1W")
2171
datetime.timedelta(7)
2172
>>> rfc3339_duration_to_delta("PT5M30S")
2173
datetime.timedelta(0, 330)
2174
>>> rfc3339_duration_to_delta("P1DT3M20S")
2175
datetime.timedelta(1, 200)
2176
"""
2177
2178
# Parsing an RFC 3339 duration with regular expressions is not
2179
# possible - there would have to be multiple places for the same
2180
# values, like seconds. The current code, while more esoteric, is
2181
# cleaner without depending on a parsing library. If Python had a
2182
# built-in library for parsing we would use it, but we'd like to
2183
# avoid excessive use of external libraries.
2184
2185
# New type for defining tokens, syntax, and semantics all-in-one
2186
Token = collections.namedtuple("Token", (
2187
"regexp", # To match token; if "value" is not None, must have
2188
# a "group" containing digits
2189
"value", # datetime.timedelta or None
2190
"followers")) # Tokens valid after this token
2191
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2192
# the "duration" ABNF definition in RFC 3339, Appendix A.
2193
token_end = Token(re.compile(r"$"), None, frozenset())
2194
token_second = Token(re.compile(r"(\d+)S"),
2195
datetime.timedelta(seconds=1),
2196
frozenset((token_end, )))
2197
token_minute = Token(re.compile(r"(\d+)M"),
2198
datetime.timedelta(minutes=1),
2199
frozenset((token_second, token_end)))
2200
token_hour = Token(re.compile(r"(\d+)H"),
2201
datetime.timedelta(hours=1),
2202
frozenset((token_minute, token_end)))
2203
token_time = Token(re.compile(r"T"),
2204
None,
2205
frozenset((token_hour, token_minute,
2206
token_second)))
2207
token_day = Token(re.compile(r"(\d+)D"),
2208
datetime.timedelta(days=1),
2209
frozenset((token_time, token_end)))
2210
token_month = Token(re.compile(r"(\d+)M"),
2211
datetime.timedelta(weeks=4),
2212
frozenset((token_day, token_end)))
2213
token_year = Token(re.compile(r"(\d+)Y"),
2214
datetime.timedelta(weeks=52),
2215
frozenset((token_month, token_end)))
2216
token_week = Token(re.compile(r"(\d+)W"),
2217
datetime.timedelta(weeks=1),
2218
frozenset((token_end, )))
2219
token_duration = Token(re.compile(r"P"), None,
2220
frozenset((token_year, token_month,
2221
token_day, token_time,
2222
token_week)))
2223
# Define starting values
2224
value = datetime.timedelta() # Value so far
2225
found_token = None
2226
followers = frozenset((token_duration, )) # Following valid tokens
2227
s = duration # String left to parse
2228
# Loop until end token is found
2229
while found_token is not token_end:
2230
# Search for any currently valid tokens
2231
for token in followers:
2232
match = token.regexp.match(s)
2233
if match is not None:
2234
# Token found
2235
if token.value is not None:
2236
# Value found, parse digits
2237
factor = int(match.group(1), 10)
2238
# Add to value so far
2239
value += factor * token.value
2240
# Strip token from string
2241
s = token.regexp.sub("", s, 1)
2242
# Go to found token
2243
found_token = token
2244
# Set valid next tokens
2245
followers = found_token.followers
2246
break
2247
else:
2248
# No currently valid tokens were found
2249
raise ValueError("Invalid RFC 3339 duration: {!r}"
2250
.format(duration))
2251
# End token found
2252
return value
2253
2254
2255
1503
def string_to_delta(interval):
2256
1504
"""Parse a string and return a datetime.timedelta
2257
1505
2258
>>> string_to_delta('7d')
1506
>>> string_to_delta(u'7d')
2259
1507
datetime.timedelta(7)
2260
>>> string_to_delta('60s')
1508
>>> string_to_delta(u'60s')
2261
1509
datetime.timedelta(0, 60)
2262
>>> string_to_delta('60m')
1510
>>> string_to_delta(u'60m')
2263
1511
datetime.timedelta(0, 3600)
2264
>>> string_to_delta('24h')
1512
>>> string_to_delta(u'24h')
2265
1513
datetime.timedelta(1)
2266
>>> string_to_delta('1w')
1514
>>> string_to_delta(u'1w')
2267
1515
datetime.timedelta(7)
2268
>>> string_to_delta('5m 30s')
1516
>>> string_to_delta(u'5m 30s')
2269
1517
datetime.timedelta(0, 330)
2270
1518
"""
2271
2272
try:
2273
return rfc3339_duration_to_delta(interval)
2274
except ValueError:
2275
pass
2276
2277
1519
timevalue = datetime.timedelta(0)
2278
1520
for s in interval.split():
2279
1521
try:
2280
suffix = s[-1]
1522
suffix = unicode(s[-1])
2281
1523
value = int(s[:-1])
2282
if suffix == "d":
1524
if suffix == u"d":
2283
1525
delta = datetime.timedelta(value)
2284
elif suffix == "s":
1526
elif suffix == u"s":
2285
1527
delta = datetime.timedelta(0, value)
2286
elif suffix == "m":
1528
elif suffix == u"m":
2287
1529
delta = datetime.timedelta(0, 0, 0, 0, value)
2288
elif suffix == "h":
1530
elif suffix == u"h":
2289
1531
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2290
elif suffix == "w":
1532
elif suffix == u"w":
2291
1533
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2292
1534
else:
2293
raise ValueError("Unknown suffix {!r}".format(suffix))
2294
except IndexError as e:
2295
raise ValueError(*(e.args))
1535
raise ValueError(u"Unknown suffix %r" % suffix)
1536
except (ValueError, IndexError), e:
1537
raise ValueError(e.message)
2296
1538
timevalue += delta
2297
1539
return timevalue
2298
1540
2299
1541
1542
def if_nametoindex(interface):
1543
"""Call the C function if_nametoindex(), or equivalent
1544
1545
Note: This function cannot accept a unicode string."""
1546
global if_nametoindex
1547
try:
1548
if_nametoindex = (ctypes.cdll.LoadLibrary
1549
(ctypes.util.find_library(u"c"))
1550
.if_nametoindex)
1551
except (OSError, AttributeError):
1552
logger.warning(u"Doing if_nametoindex the hard way")
1553
def if_nametoindex(interface):
1554
"Get an interface index the hard way, i.e. using fcntl()"
1555
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1556
with contextlib.closing(socket.socket()) as s:
1557
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1558
struct.pack(str(u"16s16x"),
1559
interface))
1560
interface_index = struct.unpack(str(u"I"),
1561
ifreq[16:20])[0]
1562
return interface_index
1563
return if_nametoindex(interface)
1564
1565
2300
1566
def daemon(nochdir = False, noclose = False):
2301
1567
"""See daemon(3). Standard BSD Unix function.
2302
1568
2305
1571
sys.exit()
2306
1572
os.setsid()
2307
1573
if not nochdir:
2308
os.chdir("/")
1574
os.chdir(u"/")
2309
1575
if os.fork():
2310
1576
sys.exit()
2311
1577
if not noclose:
2312
1578
# Close all standard open file descriptors
2313
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1579
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2314
1580
if not stat.S_ISCHR(os.fstat(null).st_mode):
2315
1581
raise OSError(errno.ENODEV,
2316
"{} not a character device"
2317
.format(os.devnull))
1582
u"%s not a character device"
1583
% os.path.devnull)
2318
1584
os.dup2(null, sys.stdin.fileno())
2319
1585
os.dup2(null, sys.stdout.fileno())
2320
1586
os.dup2(null, sys.stderr.fileno())
2327
1593
##################################################################
2328
1594
# Parsing of options, both command line and config file
2329
1595
2330
parser = argparse.ArgumentParser()
2331
parser.add_argument("-v", "--version", action="version",
2332
version = "%(prog)s {}".format(version),
2333
help="show version number and exit")
2334
parser.add_argument("-i", "--interface", metavar="IF",
2335
help="Bind to interface IF")
2336
parser.add_argument("-a", "--address",
2337
help="Address to listen for requests on")
2338
parser.add_argument("-p", "--port", type=int,
2339
help="Port number to receive requests on")
2340
parser.add_argument("--check", action="store_true",
2341
help="Run self-test")
2342
parser.add_argument("--debug", action="store_true",
2343
help="Debug mode; run in foreground and log"
2344
" to terminal", default=None)
2345
parser.add_argument("--debuglevel", metavar="LEVEL",
2346
help="Debug level for stdout output")
2347
parser.add_argument("--priority", help="GnuTLS"
2348
" priority string (see GnuTLS documentation)")
2349
parser.add_argument("--servicename",
2350
metavar="NAME", help="Zeroconf service name")
2351
parser.add_argument("--configdir",
2352
default="/etc/mandos", metavar="DIR",
2353
help="Directory to search for configuration"
2354
" files")
2355
parser.add_argument("--no-dbus", action="store_false",
2356
dest="use_dbus", help="Do not provide D-Bus"
2357
" system bus interface", default=None)
2358
parser.add_argument("--no-ipv6", action="store_false",
2359
dest="use_ipv6", help="Do not use IPv6",
2360
default=None)
2361
parser.add_argument("--no-restore", action="store_false",
2362
dest="restore", help="Do not restore stored"
2363
" state", default=None)
2364
parser.add_argument("--socket", type=int,
2365
help="Specify a file descriptor to a network"
2366
" socket to use instead of creating one")
2367
parser.add_argument("--statedir", metavar="DIR",
2368
help="Directory to save/restore state in")
2369
parser.add_argument("--foreground", action="store_true",
2370
help="Run in foreground", default=None)
2371
parser.add_argument("--no-zeroconf", action="store_false",
2372
dest="zeroconf", help="Do not use Zeroconf",
2373
default=None)
2374
2375
options = parser.parse_args()
1596
parser = optparse.OptionParser(version = "%%prog %s" % version)
1597
parser.add_option("-i", u"--interface", type=u"string",
1598
metavar="IF", help=u"Bind to interface IF")
1599
parser.add_option("-a", u"--address", type=u"string",
1600
help=u"Address to listen for requests on")
1601
parser.add_option("-p", u"--port", type=u"int",
1602
help=u"Port number to receive requests on")
1603
parser.add_option("--check", action=u"store_true",
1604
help=u"Run self-test")
1605
parser.add_option("--debug", action=u"store_true",
1606
help=u"Debug mode; run in foreground and log to"
1607
u" terminal")
1608
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1609
u" priority string (see GnuTLS documentation)")
1610
parser.add_option("--servicename", type=u"string",
1611
metavar=u"NAME", help=u"Zeroconf service name")
1612
parser.add_option("--configdir", type=u"string",
1613
default=u"/etc/mandos", metavar=u"DIR",
1614
help=u"Directory to search for configuration"
1615
u" files")
1616
parser.add_option("--no-dbus", action=u"store_false",
1617
dest=u"use_dbus", help=u"Do not provide D-Bus"
1618
u" system bus interface")
1619
parser.add_option("--no-ipv6", action=u"store_false",
1620
dest=u"use_ipv6", help=u"Do not use IPv6")
1621
options = parser.parse_args()[0]
2376
1622
2377
1623
if options.check:
2378
1624
import doctest
2379
fail_count, test_count = doctest.testmod()
2380
sys.exit(os.EX_OK if fail_count == 0 else 1)
1625
doctest.testmod()
1626
sys.exit()
2381
1627
2382
1628
# Default values for config file for server-global settings
2383
server_defaults = { "interface": "",
2384
"address": "",
2385
"port": "",
2386
"debug": "False",
2387
"priority":
2388
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2389
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2390
"servicename": "Mandos",
2391
"use_dbus": "True",
2392
"use_ipv6": "True",
2393
"debuglevel": "",
2394
"restore": "True",
2395
"socket": "",
2396
"statedir": "/var/lib/mandos",
2397
"foreground": "False",
2398
"zeroconf": "True",
2399
}
1629
server_defaults = { u"interface": u"",
1630
u"address": u"",
1631
u"port": u"",
1632
u"debug": u"False",
1633
u"priority":
1634
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1635
u"servicename": u"Mandos",
1636
u"use_dbus": u"True",
1637
u"use_ipv6": u"True",
1638
}
2400
1639
2401
1640
# Parse config file for server-global settings
2402
1641
server_config = configparser.SafeConfigParser(server_defaults)
2403
1642
del server_defaults
2404
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1643
server_config.read(os.path.join(options.configdir,
1644
u"mandos.conf"))
2405
1645
# Convert the SafeConfigParser object to a dict
2406
1646
server_settings = server_config.defaults()
2407
1647
# Use the appropriate methods on the non-string config options
2408
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2409
server_settings[option] = server_config.getboolean("DEFAULT",
1648
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1649
server_settings[option] = server_config.getboolean(u"DEFAULT",
2410
1650
option)
2411
1651
if server_settings["port"]:
2412
server_settings["port"] = server_config.getint("DEFAULT",
2413
"port")
2414
if server_settings["socket"]:
2415
server_settings["socket"] = server_config.getint("DEFAULT",
2416
"socket")
2417
# Later, stdin will, and stdout and stderr might, be dup'ed
2418
# over with an opened os.devnull. But we don't want this to
2419
# happen with a supplied network socket.
2420
if 0 <= server_settings["socket"] <= 2:
2421
server_settings["socket"] = os.dup(server_settings
2422
["socket"])
1652
server_settings["port"] = server_config.getint(u"DEFAULT",
1653
u"port")
2423
1654
del server_config
2424
1655
2425
1656
# Override the settings from the config file with command line
2426
1657
# options, if set.
2427
for option in ("interface", "address", "port", "debug",
2428
"priority", "servicename", "configdir", "use_dbus",
2429
"use_ipv6", "debuglevel", "restore", "statedir",
2430
"socket", "foreground", "zeroconf"):
1658
for option in (u"interface", u"address", u"port", u"debug",
1659
u"priority", u"servicename", u"configdir",
1660
u"use_dbus", u"use_ipv6"):
2431
1661
value = getattr(options, option)
2432
1662
if value is not None:
2433
1663
server_settings[option] = value
2434
1664
del options
2435
1665
# Force all strings to be unicode
2436
1666
for option in server_settings.keys():
2437
if isinstance(server_settings[option], bytes):
2438
server_settings[option] = (server_settings[option]
2439
.decode("utf-8"))
2440
# Force all boolean options to be boolean
2441
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2442
"foreground", "zeroconf"):
2443
server_settings[option] = bool(server_settings[option])
2444
# Debug implies foreground
2445
if server_settings["debug"]:
2446
server_settings["foreground"] = True
1667
if type(server_settings[option]) is str:
1668
server_settings[option] = unicode(server_settings[option])
2447
1669
# Now we have our good server settings in "server_settings"
2448
1670
2449
1671
##################################################################
2450
1672
2451
if (not server_settings["zeroconf"]
2452
and not (server_settings["port"]
2453
or server_settings["socket"] != "")):
2454
parser.error("Needs port or socket to work without Zeroconf")
2455
2456
1673
# For convenience
2457
debug = server_settings["debug"]
2458
debuglevel = server_settings["debuglevel"]
2459
use_dbus = server_settings["use_dbus"]
2460
use_ipv6 = server_settings["use_ipv6"]
2461
stored_state_path = os.path.join(server_settings["statedir"],
2462
stored_state_file)
2463
foreground = server_settings["foreground"]
2464
zeroconf = server_settings["zeroconf"]
2465
2466
if debug:
2467
initlogger(debug, logging.DEBUG)
2468
else:
2469
if not debuglevel:
2470
initlogger(debug)
2471
else:
2472
level = getattr(logging, debuglevel.upper())
2473
initlogger(debug, level)
2474
2475
if server_settings["servicename"] != "Mandos":
2476
syslogger.setFormatter(
2477
logging.Formatter('Mandos ({}) [%(process)d]:'
2478
' %(levelname)s: %(message)s'.format(
2479
server_settings["servicename"])))
1674
debug = server_settings[u"debug"]
1675
use_dbus = server_settings[u"use_dbus"]
1676
use_ipv6 = server_settings[u"use_ipv6"]
1677
1678
if not debug:
1679
syslogger.setLevel(logging.WARNING)
1680
console.setLevel(logging.WARNING)
1681
1682
if server_settings[u"servicename"] != u"Mandos":
1683
syslogger.setFormatter(logging.Formatter
1684
(u'Mandos (%s) [%%(process)d]:'
1685
u' %%(levelname)s: %%(message)s'
1686
% server_settings[u"servicename"]))
2480
1687
2481
1688
# Parse config file with clients
2482
client_config = configparser.SafeConfigParser(Client
2483
.client_defaults)
2484
client_config.read(os.path.join(server_settings["configdir"],
2485
"clients.conf"))
1689
client_defaults = { u"timeout": u"1h",
1690
u"interval": u"5m",
1691
u"checker": u"fping -q -- %%(host)s",
1692
u"host": u"",
1693
u"approved_delay": u"0s",
1694
u"approved_duration": u"1s",
1695
}
1696
client_config = configparser.SafeConfigParser(client_defaults)
1697
client_config.read(os.path.join(server_settings[u"configdir"],
1698
u"clients.conf"))
2486
1699
2487
1700
global mandos_dbus_service
2488
1701
mandos_dbus_service = None
2489
1702
2490
socketfd = None
2491
if server_settings["socket"] != "":
2492
socketfd = server_settings["socket"]
2493
tcp_server = MandosServer(
2494
(server_settings["address"], server_settings["port"]),
2495
ClientHandler,
2496
interface=(server_settings["interface"] or None),
2497
use_ipv6=use_ipv6,
2498
gnutls_priority=server_settings["priority"],
2499
use_dbus=use_dbus,
2500
socketfd=socketfd)
2501
if not foreground:
2502
pidfilename = "/run/mandos.pid"
2503
if not os.path.isdir("/run/."):
2504
pidfilename = "/var/run/mandos.pid"
2505
pidfile = None
2506
try:
2507
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2508
except IOError as e:
2509
logger.error("Could not open file %r", pidfilename,
2510
exc_info=e)
1703
tcp_server = MandosServer((server_settings[u"address"],
1704
server_settings[u"port"]),
1705
ClientHandler,
1706
interface=server_settings[u"interface"],
1707
use_ipv6=use_ipv6,
1708
gnutls_priority=
1709
server_settings[u"priority"],
1710
use_dbus=use_dbus)
1711
pidfilename = u"/var/run/mandos.pid"
1712
try:
1713
pidfile = open(pidfilename, u"w")
1714
except IOError:
1715
logger.error(u"Could not open file %r", pidfilename)
2511
1716
2512
for name in ("_mandos", "mandos", "nobody"):
1717
try:
1718
uid = pwd.getpwnam(u"_mandos").pw_uid
1719
gid = pwd.getpwnam(u"_mandos").pw_gid
1720
except KeyError:
2513
1721
try:
2514
uid = pwd.getpwnam(name).pw_uid
2515
gid = pwd.getpwnam(name).pw_gid
2516
break
1722
uid = pwd.getpwnam(u"mandos").pw_uid
1723
gid = pwd.getpwnam(u"mandos").pw_gid
2517
1724
except KeyError:
2518
continue
2519
else:
2520
uid = 65534
2521
gid = 65534
1725
try:
1726
uid = pwd.getpwnam(u"nobody").pw_uid
1727
gid = pwd.getpwnam(u"nobody").pw_gid
1728
except KeyError:
1729
uid = 65534
1730
gid = 65534
2522
1731
try:
2523
1732
os.setgid(gid)
2524
1733
os.setuid(uid)
2525
except OSError as error:
2526
if error.errno != errno.EPERM:
2527
raise
1734
except OSError, error:
1735
if error[0] != errno.EPERM:
1736
raise error
2528
1737
1738
# Enable all possible GnuTLS debugging
2529
1739
if debug:
2530
# Enable all possible GnuTLS debugging
2531
2532
1740
# "Use a log level over 10 to enable all debugging options."
2533
1741
# - GnuTLS manual
2534
1742
gnutls.library.functions.gnutls_global_set_log_level(11)
2535
1743
2536
1744
@gnutls.library.types.gnutls_log_func
2537
1745
def debug_gnutls(level, string):
2538
logger.debug("GnuTLS: %s", string[:-1])
2539
2540
gnutls.library.functions.gnutls_global_set_log_function(
2541
debug_gnutls)
2542
2543
# Redirect stdin so all checkers get /dev/null
2544
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2545
os.dup2(null, sys.stdin.fileno())
2546
if null > 2:
2547
os.close(null)
2548
2549
# Need to fork before connecting to D-Bus
2550
if not foreground:
2551
# Close all input and output, do double fork, etc.
2552
daemon()
2553
2554
# multiprocessing will use threads, so before we use gobject we
2555
# need to inform gobject that threads will be used.
2556
gobject.threads_init()
1746
logger.debug(u"GnuTLS: %s", string[:-1])
1747
1748
(gnutls.library.functions
1749
.gnutls_global_set_log_function(debug_gnutls))
2557
1750
2558
1751
global main_loop
2559
1752
# From the Avahi example code
2560
DBusGMainLoop(set_as_default=True)
1753
DBusGMainLoop(set_as_default=True )
2561
1754
main_loop = gobject.MainLoop()
2562
1755
bus = dbus.SystemBus()
2563
1756
# End of Avahi example code
2564
1757
if use_dbus:
2565
1758
try:
2566
bus_name = dbus.service.BusName("se.recompile.Mandos",
2567
bus,
2568
do_not_queue=True)
2569
old_bus_name = dbus.service.BusName(
2570
"se.bsnet.fukt.Mandos", bus,
2571
do_not_queue=True)
2572
except dbus.exceptions.DBusException as e:
2573
logger.error("Disabling D-Bus:", exc_info=e)
1759
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1760
bus, do_not_queue=True)
1761
except dbus.exceptions.NameExistsException, e:
1762
logger.error(unicode(e) + u", disabling D-Bus")
2574
1763
use_dbus = False
2575
server_settings["use_dbus"] = False
1764
server_settings[u"use_dbus"] = False
2576
1765
tcp_server.use_dbus = False
2577
if zeroconf:
2578
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2579
service = AvahiServiceToSyslog(
2580
name = server_settings["servicename"],
2581
servicetype = "_mandos._tcp",
2582
protocol = protocol,
2583
bus = bus)
2584
if server_settings["interface"]:
2585
service.interface = if_nametoindex(
2586
server_settings["interface"].encode("utf-8"))
2587
2588
global multiprocessing_manager
2589
multiprocessing_manager = multiprocessing.Manager()
1766
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1767
service = AvahiService(name = server_settings[u"servicename"],
1768
servicetype = u"_mandos._tcp",
1769
protocol = protocol, bus = bus)
1770
if server_settings["interface"]:
1771
service.interface = (if_nametoindex
1772
(str(server_settings[u"interface"])))
2590
1773
2591
1774
client_class = Client
2592
1775
if use_dbus:
2593
1776
client_class = functools.partial(ClientDBus, bus = bus)
2594
2595
client_settings = Client.config_parser(client_config)
2596
old_client_settings = {}
2597
clients_data = {}
2598
2599
# This is used to redirect stdout and stderr for checker processes
2600
global wnull
2601
wnull = open(os.devnull, "w") # A writable /dev/null
2602
# Only used if server is running in foreground but not in debug
2603
# mode
2604
if debug or not foreground:
2605
wnull.close()
2606
2607
# Get client data and settings from last running state.
2608
if server_settings["restore"]:
2609
try:
2610
with open(stored_state_path, "rb") as stored_state:
2611
clients_data, old_client_settings = pickle.load(
2612
stored_state)
2613
os.remove(stored_state_path)
2614
except IOError as e:
2615
if e.errno == errno.ENOENT:
2616
logger.warning("Could not load persistent state:"
2617
" {}".format(os.strerror(e.errno)))
2618
else:
2619
logger.critical("Could not load persistent state:",
2620
exc_info=e)
2621
raise
2622
except EOFError as e:
2623
logger.warning("Could not load persistent state: "
2624
"EOFError:",
2625
exc_info=e)
2626
2627
with PGPEngine() as pgp:
2628
for client_name, client in clients_data.items():
2629
# Skip removed clients
2630
if client_name not in client_settings:
2631
continue
2632
2633
# Decide which value to use after restoring saved state.
2634
# We have three different values: Old config file,
2635
# new config file, and saved state.
2636
# New config value takes precedence if it differs from old
2637
# config value, otherwise use saved state.
2638
for name, value in client_settings[client_name].items():
2639
try:
2640
# For each value in new config, check if it
2641
# differs from the old config value (Except for
2642
# the "secret" attribute)
2643
if (name != "secret"
2644
and (value !=
2645
old_client_settings[client_name][name])):
2646
client[name] = value
2647
except KeyError:
2648
pass
2649
2650
# Clients who has passed its expire date can still be
2651
# enabled if its last checker was successful. A Client
2652
# whose checker succeeded before we stored its state is
2653
# assumed to have successfully run all checkers during
2654
# downtime.
2655
if client["enabled"]:
2656
if datetime.datetime.utcnow() >= client["expires"]:
2657
if not client["last_checked_ok"]:
2658
logger.warning(
2659
"disabling client {} - Client never "
2660
"performed a successful checker".format(
2661
client_name))
2662
client["enabled"] = False
2663
elif client["last_checker_status"] != 0:
2664
logger.warning(
2665
"disabling client {} - Client last"
2666
" checker failed with error code"
2667
" {}".format(
2668
client_name,
2669
client["last_checker_status"]))
2670
client["enabled"] = False
2671
else:
2672
client["expires"] = (
2673
datetime.datetime.utcnow()
2674
+ client["timeout"])
2675
logger.debug("Last checker succeeded,"
2676
" keeping {} enabled".format(
2677
client_name))
1777
def client_config_items(config, section):
1778
special_settings = {
1779
"approved_by_default":
1780
lambda: config.getboolean(section,
1781
"approved_by_default"),
1782
}
1783
for name, value in config.items(section):
2678
1784
try:
2679
client["secret"] = pgp.decrypt(
2680
client["encrypted_secret"],
2681
client_settings[client_name]["secret"])
2682
except PGPError:
2683
# If decryption fails, we use secret from new settings
2684
logger.debug("Failed to decrypt {} old secret".format(
2685
client_name))
2686
client["secret"] = (client_settings[client_name]
2687
["secret"])
2688
2689
# Add/remove clients based on new changes made to config
2690
for client_name in (set(old_client_settings)
2691
- set(client_settings)):
2692
del clients_data[client_name]
2693
for client_name in (set(client_settings)
2694
- set(old_client_settings)):
2695
clients_data[client_name] = client_settings[client_name]
2696
2697
# Create all client objects
2698
for client_name, client in clients_data.items():
2699
tcp_server.clients[client_name] = client_class(
2700
name = client_name,
2701
settings = client,
2702
server_settings = server_settings)
2703
1785
yield (name, special_settings[name]())
1786
except KeyError:
1787
yield (name, value)
1788
1789
tcp_server.clients.update(set(
1790
client_class(name = section,
1791
config= dict(client_config_items(
1792
client_config, section)))
1793
for section in client_config.sections()))
2704
1794
if not tcp_server.clients:
2705
logger.warning("No clients defined")
2706
2707
if not foreground:
2708
if pidfile is not None:
1795
logger.warning(u"No clients defined")
1796
1797
if debug:
1798
# Redirect stdin so all checkers get /dev/null
1799
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1800
os.dup2(null, sys.stdin.fileno())
1801
if null > 2:
1802
os.close(null)
1803
else:
1804
# No console logging
1805
logger.removeHandler(console)
1806
# Close all input and output, do double fork, etc.
1807
daemon()
1808
1809
try:
1810
with pidfile:
2709
1811
pid = os.getpid()
2710
try:
2711
with pidfile:
2712
print(pid, file=pidfile)
2713
except IOError:
2714
logger.error("Could not write to file %r with PID %d",
2715
pidfilename, pid)
1812
pidfile.write(str(pid) + "\n")
2716
1813
del pidfile
2717
del pidfilename
1814
except IOError:
1815
logger.error(u"Could not write to file %r with PID %d",
1816
pidfilename, pid)
1817
except NameError:
1818
# "pidfile" was never created
1819
pass
1820
del pidfilename
2718
1821
1822
if not debug:
1823
signal.signal(signal.SIGINT, signal.SIG_IGN)
2719
1824
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2720
1825
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2721
1826
2722
1827
if use_dbus:
2723
2724
@alternate_dbus_interfaces(
2725
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2726
class MandosDBusService(DBusObjectWithProperties):
1828
class MandosDBusService(dbus.service.Object):
2727
1829
"""A D-Bus proxy object"""
2728
2729
1830
def __init__(self):
2730
dbus.service.Object.__init__(self, bus, "/")
2731
2732
_interface = "se.recompile.Mandos"
2733
2734
@dbus_interface_annotations(_interface)
2735
def _foo(self):
2736
return {
2737
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2738
"false" }
2739
2740
@dbus.service.signal(_interface, signature="o")
1831
dbus.service.Object.__init__(self, bus, u"/")
1832
_interface = u"se.bsnet.fukt.Mandos"
1833
1834
@dbus.service.signal(_interface, signature=u"o")
2741
1835
def ClientAdded(self, objpath):
2742
1836
"D-Bus signal"
2743
1837
pass
2744
1838
2745
@dbus.service.signal(_interface, signature="ss")
1839
@dbus.service.signal(_interface, signature=u"ss")
2746
1840
def ClientNotFound(self, fingerprint, address):
2747
1841
"D-Bus signal"
2748
1842
pass
2749
1843
2750
@dbus.service.signal(_interface, signature="os")
1844
@dbus.service.signal(_interface, signature=u"os")
2751
1845
def ClientRemoved(self, objpath, name):
2752
1846
"D-Bus signal"
2753
1847
pass
2754
1848
2755
@dbus.service.method(_interface, out_signature="ao")
1849
@dbus.service.method(_interface, out_signature=u"ao")
2756
1850
def GetAllClients(self):
2757
1851
"D-Bus method"
2758
return dbus.Array(c.dbus_object_path for c in
2759
tcp_server.clients.itervalues())
1852
return dbus.Array(c.dbus_object_path
1853
for c in tcp_server.clients)
2760
1854
2761
1855
@dbus.service.method(_interface,
2762
out_signature="a{oa{sv}}")
1856
out_signature=u"a{oa{sv}}")
2763
1857
def GetAllClientsWithProperties(self):
2764
1858
"D-Bus method"
2765
1859
return dbus.Dictionary(
2766
{ c.dbus_object_path: c.GetAll("")
2767
for c in tcp_server.clients.itervalues() },
2768
signature="oa{sv}")
1860
((c.dbus_object_path, c.GetAll(u""))
1861
for c in tcp_server.clients),
1862
signature=u"oa{sv}")
2769
1863
2770
@dbus.service.method(_interface, in_signature="o")
1864
@dbus.service.method(_interface, in_signature=u"o")
2771
1865
def RemoveClient(self, object_path):
2772
1866
"D-Bus method"
2773
for c in tcp_server.clients.itervalues():
1867
for c in tcp_server.clients:
2774
1868
if c.dbus_object_path == object_path:
2775
del tcp_server.clients[c.name]
1869
tcp_server.clients.remove(c)
2776
1870
c.remove_from_connection()
2777
1871
# Don't signal anything except ClientRemoved
2778
1872
c.disable(quiet=True)
2787
1881
2788
1882
def cleanup():
2789
1883
"Cleanup function; run on exit"
2790
if zeroconf:
2791
service.cleanup()
2792
2793
multiprocessing.active_children()
2794
wnull.close()
2795
if not (tcp_server.clients or client_settings):
2796
return
2797
2798
# Store client before exiting. Secrets are encrypted with key
2799
# based on what config file has. If config file is
2800
# removed/edited, old secret will thus be unrecovable.
2801
clients = {}
2802
with PGPEngine() as pgp:
2803
for client in tcp_server.clients.itervalues():
2804
key = client_settings[client.name]["secret"]
2805
client.encrypted_secret = pgp.encrypt(client.secret,
2806
key)
2807
client_dict = {}
2808
2809
# A list of attributes that can not be pickled
2810
# + secret.
2811
exclude = { "bus", "changedstate", "secret",
2812
"checker", "server_settings" }
2813
for name, typ in inspect.getmembers(dbus.service
2814
.Object):
2815
exclude.add(name)
2816
2817
client_dict["encrypted_secret"] = (client
2818
.encrypted_secret)
2819
for attr in client.client_structure:
2820
if attr not in exclude:
2821
client_dict[attr] = getattr(client, attr)
2822
2823
clients[client.name] = client_dict
2824
del client_settings[client.name]["secret"]
2825
2826
try:
2827
with tempfile.NamedTemporaryFile(
2828
mode='wb',
2829
suffix=".pickle",
2830
prefix='clients-',
2831
dir=os.path.dirname(stored_state_path),
2832
delete=False) as stored_state:
2833
pickle.dump((clients, client_settings), stored_state)
2834
tempname = stored_state.name
2835
os.rename(tempname, stored_state_path)
2836
except (IOError, OSError) as e:
2837
if not debug:
2838
try:
2839
os.remove(tempname)
2840
except NameError:
2841
pass
2842
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2843
logger.warning("Could not save persistent state: {}"
2844
.format(os.strerror(e.errno)))
2845
else:
2846
logger.warning("Could not save persistent state:",
2847
exc_info=e)
2848
raise
2849
2850
# Delete all clients, and settings from config
1884
service.cleanup()
1885
2851
1886
while tcp_server.clients:
2852
name, client = tcp_server.clients.popitem()
1887
client = tcp_server.clients.pop()
2853
1888
if use_dbus:
2854
1889
client.remove_from_connection()
1890
client.disable_hook = None
2855
1891
# Don't signal anything except ClientRemoved
2856
1892
client.disable(quiet=True)
2857
1893
if use_dbus:
2858
1894
# Emit D-Bus signal
2859
mandos_dbus_service.ClientRemoved(
2860
client.dbus_object_path, client.name)
2861
client_settings.clear()
1895
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1896
client.name)
2862
1897
2863
1898
atexit.register(cleanup)
2864
1899
2865
for client in tcp_server.clients.itervalues():
1900
for client in tcp_server.clients:
2866
1901
if use_dbus:
2867
1902
# Emit D-Bus signal
2868
1903
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2869
# Need to initiate checking of clients
2870
if client.enabled:
2871
client.init_checker()
1904
client.enable()
2872
1905
2873
1906
tcp_server.enable()
2874
1907
tcp_server.server_activate()
2875
1908
2876
1909
# Find out what port we got
2877
if zeroconf:
2878
service.port = tcp_server.socket.getsockname()[1]
1910
service.port = tcp_server.socket.getsockname()[1]
2879
1911
if use_ipv6:
2880
logger.info("Now listening on address %r, port %d,"
2881
" flowinfo %d, scope_id %d",
2882
*tcp_server.socket.getsockname())
1912
logger.info(u"Now listening on address %r, port %d,"
1913
" flowinfo %d, scope_id %d"
1914
% tcp_server.socket.getsockname())
2883
1915
else: # IPv4
2884
logger.info("Now listening on address %r, port %d",
2885
*tcp_server.socket.getsockname())
1916
logger.info(u"Now listening on address %r, port %d"
1917
% tcp_server.socket.getsockname())
2886
1918
2887
1919
#service.interface = tcp_server.socket.getsockname()[3]
2888
1920
2889
1921
try:
2890
if zeroconf:
2891
# From the Avahi example code
2892
try:
2893
service.activate()
2894
except dbus.exceptions.DBusException as error:
2895
logger.critical("D-Bus Exception", exc_info=error)
2896
cleanup()
2897
sys.exit(1)
2898
# End of Avahi example code
1922
# From the Avahi example code
1923
try:
1924
service.activate()
1925
except dbus.exceptions.DBusException, error:
1926
logger.critical(u"DBusException: %s", error)
1927
cleanup()
1928
sys.exit(1)
1929
# End of Avahi example code
2899
1930
2900
1931
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2901
1932
lambda *args, **kwargs:
2902
1933
(tcp_server.handle_request
2903
1934
(*args[2:], **kwargs) or True))
2904
1935
2905
logger.debug("Starting main loop")
1936
logger.debug(u"Starting main loop")
2906
1937
main_loop.run()
2907
except AvahiError as error:
2908
logger.critical("Avahi Error", exc_info=error)
1938
except AvahiError, error:
1939
logger.critical(u"AvahiError: %s", error)
2909
1940
cleanup()
2910
1941
sys.exit(1)
2911
1942
except KeyboardInterrupt:
2912
1943
if debug:
2913
print("", file=sys.stderr)
2914
logger.debug("Server received KeyboardInterrupt")
2915
logger.debug("Server exiting")
1944
print >> sys.stderr
1945
logger.debug(u"Server received KeyboardInterrupt")
1946
logger.debug(u"Server exiting")
2916
1947
# Must run before the D-Bus bus name gets deregistered
2917
1948
cleanup()
2918
1949
2919
2920
1950
if __name__ == '__main__':
2921
1951
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0