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- Committer: teddy at recompile
- Date: 2011-12-27 14:15:40 UTC
- Revision ID: teddy@recompile.se-20111227141540-ajrabf33q59jfa7t
Reorder TODO entries
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files removed:
- plugins.d/plymouth
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
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# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
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42
import gnutls.crypto
61
62
import functools
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63
import cPickle as pickle
63
64
import multiprocessing
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import types
66
import binascii
67
import tempfile
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68
65
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import dbus
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70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
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import inspect
78
import GnuPGInterface
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79
75
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try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
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version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
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92
syslogger = (logging.handlers.SysLogHandler
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93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
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console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
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address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
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console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
129
130
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
147
def __enter__(self):
148
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
151
self._cleanup()
152
return False
153
154
def __del__(self):
155
self._cleanup()
156
157
def _cleanup(self):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
162
for filename in files:
163
os.remove(os.path.join(root, filename))
164
for dirname in dirs:
165
os.rmdir(os.path.join(root, dirname))
166
# Remove tempdir
167
os.rmdir(self.tempdir)
168
self.tempdir = None
169
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
190
return ciphertext
191
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
208
209
101
210
102
211
class AvahiError(Exception):
103
212
def __init__(self, value, *args, **kwargs):
119
228
Attributes:
120
229
interface: integer; avahi.IF_UNSPEC or an interface index.
121
230
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
231
name: string; Example: 'Mandos'
232
type: string; Example: '_mandos._tcp'.
124
233
See <http://www.dns-sd.org/ServiceTypes.html>
125
234
port: integer; what port to announce
126
235
TXT: list of strings; TXT record for the service
135
244
"""
136
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
246
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
247
domain = "", host = "", max_renames = 32768,
139
248
protocol = avahi.PROTO_UNSPEC, bus = None):
140
249
self.interface = interface
141
250
self.name = name
150
259
self.group = None # our entry group
151
260
self.server = None
152
261
self.bus = bus
262
self.entry_group_state_changed_match = None
153
263
def rename(self):
154
264
"""Derived from the Avahi example code"""
155
265
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
266
logger.critical("No suitable Zeroconf service name found"
267
" after %i retries, exiting.",
158
268
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
269
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
272
logger.info("Changing Zeroconf service name to %r ...",
162
273
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
274
self.remove()
168
self.add()
275
try:
276
self.add()
277
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
169
281
self.rename_count += 1
170
282
def remove(self):
171
283
"""Derived from the Avahi example code"""
284
if self.entry_group_state_changed_match is not None:
285
self.entry_group_state_changed_match.remove()
286
self.entry_group_state_changed_match = None
172
287
if self.group is not None:
173
288
self.group.Reset()
174
289
def add(self):
175
290
"""Derived from the Avahi example code"""
291
self.remove()
176
292
if self.group is None:
177
293
self.group = dbus.Interface(
178
294
self.bus.get_object(avahi.DBUS_NAME,
179
295
self.server.EntryGroupNew()),
180
296
avahi.DBUS_INTERFACE_ENTRY_GROUP)
181
self.group.connect_to_signal('StateChanged',
182
self
183
.entry_group_state_changed)
184
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
297
self.entry_group_state_changed_match = (
298
self.group.connect_to_signal(
299
'StateChanged', self.entry_group_state_changed))
300
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
185
301
self.name, self.type)
186
302
self.group.AddService(
187
303
self.interface,
194
310
self.group.Commit()
195
311
def entry_group_state_changed(self, state, error):
196
312
"""Derived from the Avahi example code"""
197
logger.debug(u"Avahi state change: %i", state)
313
logger.debug("Avahi entry group state change: %i", state)
198
314
199
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
200
logger.debug(u"Zeroconf service established.")
316
logger.debug("Zeroconf service established.")
201
317
elif state == avahi.ENTRY_GROUP_COLLISION:
202
logger.warning(u"Zeroconf service name collision.")
318
logger.info("Zeroconf service name collision.")
203
319
self.rename()
204
320
elif state == avahi.ENTRY_GROUP_FAILURE:
205
logger.critical(u"Avahi: Error in group state changed %s",
321
logger.critical("Avahi: Error in group state changed %s",
206
322
unicode(error))
207
raise AvahiGroupError(u"State changed: %s"
323
raise AvahiGroupError("State changed: %s"
208
324
% unicode(error))
209
325
def cleanup(self):
210
326
"""Derived from the Avahi example code"""
211
327
if self.group is not None:
212
self.group.Free()
328
try:
329
self.group.Free()
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
332
pass
213
333
self.group = None
214
def server_state_changed(self, state):
334
self.remove()
335
def server_state_changed(self, state, error=None):
215
336
"""Derived from the Avahi example code"""
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
self.remove()
337
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
347
if error is None:
348
logger.error(bad_states[state])
349
else:
350
logger.error(bad_states[state] + ": %r", error)
351
self.cleanup()
219
352
elif state == avahi.SERVER_RUNNING:
220
353
self.add()
354
else:
355
if error is None:
356
logger.debug("Unknown state: %r", state)
357
else:
358
logger.debug("Unknown state: %r: %r", state, error)
221
359
def activate(self):
222
360
"""Derived from the Avahi example code"""
223
361
if self.server is None:
224
362
self.server = dbus.Interface(
225
363
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
227
366
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
367
self.server.connect_to_signal("StateChanged",
229
368
self.server_state_changed)
230
369
self.server_state_changed(self.server.GetState())
231
370
371
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
379
return ret
232
380
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
233
387
class Client(object):
234
388
"""A representation of a client host served by this server.
235
389
236
390
Attributes:
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
391
approved: bool(); 'None' if not yet approved/disapproved
392
approval_delay: datetime.timedelta(); Time to wait for approval
393
approval_duration: datetime.timedelta(); Duration of one approval
394
checker: subprocess.Popen(); a running checker process used
395
to see if the client lives.
396
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
398
checker_command: string; External command which is run to check
399
if client lives. %() expansions are done at
400
runtime with vars(self) as dict, so that for
401
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
403
created: datetime.datetime(); (UTC) object creation
404
client_structure: Object describing what attributes a client has
405
and is used for storing the client at exit
406
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
408
enabled: bool()
239
409
fingerprint: string (40 or 32 hexadecimal digits); used to
240
410
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
411
host: string; available for use by the checker command
243
created: datetime.datetime(); (UTC) object creation
244
last_enabled: datetime.datetime(); (UTC)
245
enabled: bool()
412
interval: datetime.timedelta(); How often to start a new checker
413
last_approval_request: datetime.datetime(); (UTC) or None
246
414
last_checked_ok: datetime.datetime(); (UTC) or None
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
419
name: string; from the config file, used in log messages and
420
D-Bus identifiers
421
secret: bytestring; sent verbatim (over TLS) to client
247
422
timeout: datetime.timedelta(); How long from last_checked_ok
248
423
until this client is disabled
249
interval: datetime.timedelta(); How often to start a new checker
250
disable_hook: If set, called by disable() as disable_hook(self)
251
checker: subprocess.Popen(); a running checker process used
252
to see if the client lives.
253
'None' if no process is running.
254
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
256
checker_callback_tag: - '' -
257
checker_command: string; External command which is run to check if
258
client lives. %() expansions are done at
259
runtime with vars(self) as dict, so that for
260
instance %(name)s can be used in the command.
261
current_checker_command: string; current running checker_command
262
approved_delay: datetime.timedelta(); Time to wait for approval
263
_approved: bool(); 'None' if not yet approved/disapproved
264
approved_duration: datetime.timedelta(); Duration of one approval
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
265
428
"""
266
429
267
@staticmethod
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
273
444
274
445
def timeout_milliseconds(self):
275
446
"Return the 'timeout' attribute in milliseconds"
276
return self._timedelta_to_milliseconds(self.timeout)
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
277
452
278
453
def interval_milliseconds(self):
279
454
"Return the 'interval' attribute in milliseconds"
280
return self._timedelta_to_milliseconds(self.interval)
281
282
def approved_delay_milliseconds(self):
283
return self._timedelta_to_milliseconds(self.approved_delay)
455
return timedelta_to_milliseconds(self.interval)
284
456
285
def __init__(self, name = None, disable_hook=None, config=None):
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
459
460
@staticmethod
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
465
settings = {}
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
469
470
client["host"] = section["host"]
471
# Reformat values from string types to Python types
472
client["approved_by_default"] = config.getboolean(
473
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
476
client["fingerprint"] = (section["fingerprint"].upper()
477
.replace(" ", ""))
478
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
480
elif "secfile" in section:
481
with open(os.path.expanduser(os.path.expandvars
482
(section["secfile"])),
483
"rb") as secfile:
484
client["secret"] = secfile.read()
485
else:
486
raise TypeError("No secret or secfile for section %s"
487
% section)
488
client["timeout"] = string_to_delta(section["timeout"])
489
client["extended_timeout"] = string_to_delta(
490
section["extended_timeout"])
491
client["interval"] = string_to_delta(section["interval"])
492
client["approval_delay"] = string_to_delta(
493
section["approval_delay"])
494
client["approval_duration"] = string_to_delta(
495
section["approval_duration"])
496
client["checker_command"] = section["checker"]
497
client["last_approval_request"] = None
498
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
507
508
return settings
509
510
511
def __init__(self, settings, name = None):
286
512
"""Note: the 'checker' key in 'config' sets the
287
513
'checker_command' attribute and *not* the 'checker'
288
514
attribute."""
289
515
self.name = name
290
if config is None:
291
config = {}
292
logger.debug(u"Creating client %r", self.name)
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
519
520
logger.debug("Creating client %r", self.name)
293
521
# Uppercase and remove spaces from fingerprint for later
294
522
# comparison purposes with return value from the fingerprint()
295
523
# function
296
self.fingerprint = (config[u"fingerprint"].upper()
297
.replace(u" ", u""))
298
logger.debug(u" Fingerprint: %s", self.fingerprint)
299
if u"secret" in config:
300
self.secret = config[u"secret"].decode(u"base64")
301
elif u"secfile" in config:
302
with open(os.path.expanduser(os.path.expandvars
303
(config[u"secfile"])),
304
"rb") as secfile:
305
self.secret = secfile.read()
306
else:
307
raise TypeError(u"No secret or secfile for client %s"
308
% self.name)
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
311
self.enabled = False
312
self.last_enabled = None
313
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
self.disable_hook = disable_hook
524
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
526
527
# attributes specific for this server instance
317
528
self.checker = None
318
529
self.checker_initiator_tag = None
319
530
self.disable_initiator_tag = None
320
531
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
322
532
self.current_checker_command = None
323
self.last_connect = None
324
self._approved = None
325
self.approved_by_default = config.get(u"approved_by_default",
326
True)
533
self.approved = None
327
534
self.approvals_pending = 0
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
547
if not name.startswith("_"):
548
self.client_structure.append(name)
333
549
550
# Send notice to process children that client state has changed
334
551
def send_changedstate(self):
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
552
with self.changedstate:
553
self.changedstate.notify_all()
554
339
555
def enable(self):
340
556
"""Start this client's checker and timeout hooks"""
341
if getattr(self, u"enabled", False):
557
if getattr(self, "enabled", False):
342
558
# Already enabled
343
559
return
344
560
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
562
self.enabled = True
345
563
self.last_enabled = datetime.datetime.utcnow()
564
self.init_checker()
565
566
def disable(self, quiet=True):
567
"""Disable this client."""
568
if not getattr(self, "enabled", False):
569
return False
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
573
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
576
self.disable_initiator_tag = None
577
self.expires = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
580
self.checker_initiator_tag = None
581
self.stop_checker()
582
self.enabled = False
583
# Do not run this again if called by a gobject.timeout_add
584
return False
585
586
def __del__(self):
587
self.disable()
588
589
def init_checker(self):
346
590
# Schedule a new checker to be started an 'interval' from now,
347
591
# and every interval from then on.
348
592
self.checker_initiator_tag = (gobject.timeout_add
352
596
self.disable_initiator_tag = (gobject.timeout_add
353
597
(self.timeout_milliseconds(),
354
598
self.disable))
355
self.enabled = True
356
599
# Also start a new checker *right now*.
357
600
self.start_checker()
358
601
359
def disable(self, quiet=True):
360
"""Disable this client."""
361
if not getattr(self, "enabled", False):
362
return False
363
if not quiet:
364
self.send_changedstate()
365
if not quiet:
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
368
gobject.source_remove(self.disable_initiator_tag)
369
self.disable_initiator_tag = None
370
if getattr(self, u"checker_initiator_tag", False):
371
gobject.source_remove(self.checker_initiator_tag)
372
self.checker_initiator_tag = None
373
self.stop_checker()
374
if self.disable_hook:
375
self.disable_hook(self)
376
self.enabled = False
377
# Do not run this again if called by a gobject.timeout_add
378
return False
379
380
def __del__(self):
381
self.disable_hook = None
382
self.disable()
383
384
602
def checker_callback(self, pid, condition, command):
385
603
"""The checker has completed, so take appropriate actions."""
386
604
self.checker_callback_tag = None
387
605
self.checker = None
388
606
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
logger.info(u"Checker for %(name)s succeeded",
607
self.last_checker_status = os.WEXITSTATUS(condition)
608
if self.last_checker_status == 0:
609
logger.info("Checker for %(name)s succeeded",
392
610
vars(self))
393
611
self.checked_ok()
394
612
else:
395
logger.info(u"Checker for %(name)s failed",
613
logger.info("Checker for %(name)s failed",
396
614
vars(self))
397
615
else:
398
logger.warning(u"Checker for %(name)s crashed?",
616
self.last_checker_status = -1
617
logger.warning("Checker for %(name)s crashed?",
399
618
vars(self))
400
619
401
def checked_ok(self):
620
def checked_ok(self, timeout=None):
402
621
"""Bump up the timeout for this client.
403
622
404
623
This should only be called when the client has been seen,
405
624
alive and well.
406
625
"""
626
if timeout is None:
627
timeout = self.timeout
407
628
self.last_checked_ok = datetime.datetime.utcnow()
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
411
self.disable))
629
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
631
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
635
self.expires = datetime.datetime.utcnow() + timeout
636
637
def need_approval(self):
638
self.last_approval_request = datetime.datetime.utcnow()
412
639
413
640
def start_checker(self):
414
641
"""Start a new checker subprocess if one is not running.
427
654
# If a checker exists, make sure it is not a zombie
428
655
try:
429
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
430
except (AttributeError, OSError), error:
657
except (AttributeError, OSError) as error:
431
658
if (isinstance(error, OSError)
432
659
and error.errno != errno.ECHILD):
433
660
raise error
434
661
else:
435
662
if pid:
436
logger.warning(u"Checker was a zombie")
663
logger.warning("Checker was a zombie")
437
664
gobject.source_remove(self.checker_callback_tag)
438
665
self.checker_callback(pid, status,
439
666
self.current_checker_command)
444
671
command = self.checker_command % self.host
445
672
except TypeError:
446
673
# Escape attributes for the shell
447
escaped_attrs = dict((key,
448
re.escape(unicode(str(val),
449
errors=
450
u'replace')))
451
for key, val in
452
vars(self).iteritems())
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
453
682
try:
454
683
command = self.checker_command % escaped_attrs
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
u' %s', self.checker_command, error)
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
458
687
return True # Try again later
459
688
self.current_checker_command = command
460
689
try:
461
logger.info(u"Starting checker %r for %s",
690
logger.info("Starting checker %r for %s",
462
691
command, self.name)
463
692
# We don't need to redirect stdout and stderr, since
464
693
# in normal mode, that is already done by daemon(),
466
695
# always replaced by /dev/null.)
467
696
self.checker = subprocess.Popen(command,
468
697
close_fds=True,
469
shell=True, cwd=u"/")
698
shell=True, cwd="/")
470
699
self.checker_callback_tag = (gobject.child_watch_add
471
700
(self.checker.pid,
472
701
self.checker_callback,
477
706
if pid:
478
707
gobject.source_remove(self.checker_callback_tag)
479
708
self.checker_callback(pid, status, command)
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
482
711
error)
483
712
# Re-run this periodically if run by gobject.timeout_add
484
713
return True
488
717
if self.checker_callback_tag:
489
718
gobject.source_remove(self.checker_callback_tag)
490
719
self.checker_callback_tag = None
491
if getattr(self, u"checker", None) is None:
720
if getattr(self, "checker", None) is None:
492
721
return
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
logger.debug("Stopping checker for %(name)s", vars(self))
494
723
try:
495
724
os.kill(self.checker.pid, signal.SIGTERM)
496
725
#time.sleep(0.5)
497
726
#if self.checker.poll() is None:
498
727
# os.kill(self.checker.pid, signal.SIGKILL)
499
except OSError, error:
728
except OSError as error:
500
729
if error.errno != errno.ESRCH: # No such process
501
730
raise
502
731
self.checker = None
503
732
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
733
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
506
736
"""Decorators for marking methods of a DBusObjectWithProperties to
507
737
become properties on the D-Bus.
508
738
515
745
"""
516
746
# Encoding deeply encoded byte arrays is not supported yet by the
517
747
# "Set" method, so we fail early here:
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
748
if byte_arrays and signature != "ay":
749
raise ValueError("Byte arrays not supported for non-'ay'"
750
" signature %r" % signature)
521
751
def decorator(func):
522
752
func._dbus_is_property = True
523
753
func._dbus_interface = dbus_interface
524
754
func._dbus_signature = signature
525
755
func._dbus_access = access
526
756
func._dbus_name = func.__name__
527
if func._dbus_name.endswith(u"_dbus_property"):
757
if func._dbus_name.endswith("_dbus_property"):
528
758
func._dbus_name = func._dbus_name[:-14]
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
530
760
return func
531
761
return decorator
532
762
552
782
553
783
class DBusObjectWithProperties(dbus.service.Object):
554
784
"""A D-Bus object with properties.
555
785
556
786
Classes inheriting from this can use the dbus_service_property
557
787
decorator to expose methods as D-Bus properties. It exposes the
558
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
560
790
561
791
@staticmethod
562
792
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
793
return getattr(obj, "_dbus_is_property", False)
564
794
565
795
def _get_all_dbus_properties(self):
566
796
"""Returns a generator of (name, attribute) pairs
567
797
"""
568
return ((prop._dbus_name, prop)
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
569
800
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
801
inspect.getmembers(cls, self._is_dbus_property))
571
802
572
803
def _get_dbus_property(self, interface_name, property_name):
573
804
"""Returns a bound method if one exists which is a D-Bus
574
805
property with the specified name and interface.
575
806
"""
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
return prop
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
813
586
814
# No such property
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
589
817
+ property_name)
590
818
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
820
out_signature="v")
593
821
def Get(self, interface_name, property_name):
594
822
"""Standard D-Bus property Get() method, see D-Bus standard.
595
823
"""
596
824
prop = self._get_dbus_property(interface_name, property_name)
597
if prop._dbus_access == u"write":
825
if prop._dbus_access == "write":
598
826
raise DBusPropertyAccessException(property_name)
599
827
value = prop()
600
if not hasattr(value, u"variant_level"):
828
if not hasattr(value, "variant_level"):
601
829
return value
602
830
return type(value)(value, variant_level=value.variant_level+1)
603
831
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
833
def Set(self, interface_name, property_name, value):
606
834
"""Standard D-Bus property Set() method, see D-Bus standard.
607
835
"""
608
836
prop = self._get_dbus_property(interface_name, property_name)
609
if prop._dbus_access == u"read":
837
if prop._dbus_access == "read":
610
838
raise DBusPropertyAccessException(property_name)
611
if prop._dbus_get_args_options[u"byte_arrays"]:
839
if prop._dbus_get_args_options["byte_arrays"]:
612
840
# The byte_arrays option is not supported yet on
613
841
# signatures other than "ay".
614
if prop._dbus_signature != u"ay":
842
if prop._dbus_signature != "ay":
615
843
raise ValueError
616
844
value = dbus.ByteArray(''.join(unichr(byte)
617
845
for byte in value))
618
846
prop(value)
619
847
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
849
out_signature="a{sv}")
622
850
def GetAll(self, interface_name):
623
851
"""Standard D-Bus property GetAll() method, see D-Bus
624
852
standard.
625
853
626
854
Note: Will not include properties with access="write".
627
855
"""
628
all = {}
856
properties = {}
629
857
for name, prop in self._get_all_dbus_properties():
630
858
if (interface_name
631
859
and interface_name != prop._dbus_interface):
632
860
# Interface non-empty but did not match
633
861
continue
634
862
# Ignore write-only properties
635
if prop._dbus_access == u"write":
863
if prop._dbus_access == "write":
636
864
continue
637
865
value = prop()
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
866
if not hasattr(value, "variant_level"):
867
properties[name] = value
640
868
continue
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
871
return dbus.Dictionary(properties, signature="sv")
644
872
645
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
646
out_signature=u"s",
874
out_signature="s",
647
875
path_keyword='object_path',
648
876
connection_keyword='connection')
649
877
def Introspect(self, object_path, connection):
654
882
try:
655
883
document = xml.dom.minidom.parseString(xmlstring)
656
884
def make_tag(document, name, prop):
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
885
e = document.createElement("property")
886
e.setAttribute("name", name)
887
e.setAttribute("type", prop._dbus_signature)
888
e.setAttribute("access", prop._dbus_access)
661
889
return e
662
for if_tag in document.getElementsByTagName(u"interface"):
890
for if_tag in document.getElementsByTagName("interface"):
663
891
for tag in (make_tag(document, name, prop)
664
892
for name, prop
665
893
in self._get_all_dbus_properties()
666
894
if prop._dbus_interface
667
== if_tag.getAttribute(u"name")):
895
== if_tag.getAttribute("name")):
668
896
if_tag.appendChild(tag)
669
897
# Add the names to the return values for the
670
898
# "org.freedesktop.DBus.Properties" methods
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
899
if (if_tag.getAttribute("name")
900
== "org.freedesktop.DBus.Properties"):
901
for cn in if_tag.getElementsByTagName("method"):
902
if cn.getAttribute("name") == "Get":
903
for arg in cn.getElementsByTagName("arg"):
904
if (arg.getAttribute("direction")
905
== "out"):
906
arg.setAttribute("name", "value")
907
elif cn.getAttribute("name") == "GetAll":
908
for arg in cn.getElementsByTagName("arg"):
909
if (arg.getAttribute("direction")
910
== "out"):
911
arg.setAttribute("name", "props")
912
xmlstring = document.toxml("utf-8")
685
913
document.unlink()
686
914
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
915
xml.parsers.expat.ExpatError) as error:
916
logger.error("Failed to override Introspection method",
689
917
error)
690
918
return xmlstring
691
919
692
920
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
if dt is None:
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
933
"""
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
946
continue
947
# Create an alternate D-Bus interface name based on
948
# the current name
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
959
.cell_contents)
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
984
return call_both
985
# Create the "call_both" function and add it to
986
# the class
987
attr[attrname] = fixscope(attribute,
988
new_function)
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
994
# to the class.
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
693
1027
class ClientDBus(Client, DBusObjectWithProperties):
694
1028
"""A Client class using D-Bus
695
1029
697
1031
dbus_object_path: dbus.ObjectPath
698
1032
bus: dbus.SystemBus()
699
1033
"""
1034
1035
runtime_expansions = (Client.runtime_expansions
1036
+ ("dbus_object_path",))
1037
700
1038
# dbus.service.Object doesn't use super(), so we can't either.
701
1039
702
1040
def __init__(self, bus = None, *args, **kwargs):
703
self._approvals_pending = 0
704
1041
self.bus = bus
705
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
706
1046
# Only now, when this client is initialized, can it show up on
707
1047
# the D-Bus
1048
client_object_name = unicode(self.name).translate(
1049
{ord("."): ord("_"),
1050
ord("-"): ord("_")})
708
1051
self.dbus_object_path = (dbus.ObjectPath
709
(u"/clients/"
710
+ self.name.replace(u".", u"_")))
1052
("/clients/" + client_object_name))
711
1053
DBusObjectWithProperties.__init__(self, self.bus,
712
1054
self.dbus_object_path)
713
714
def _get_approvals_pending(self):
715
return self._approvals_pending
716
def _set_approvals_pending(self, value):
717
old_value = self._approvals_pending
718
self._approvals_pending = value
719
bval = bool(value)
720
if (hasattr(self, "dbus_object_path")
721
and bval is not bool(old_value)):
722
dbus_bool = dbus.Boolean(bval, variant_level=1)
723
self.PropertyChanged(dbus.String(u"approved_pending"),
724
dbus_bool)
725
726
approvals_pending = property(_get_approvals_pending,
727
_set_approvals_pending)
728
del _get_approvals_pending, _set_approvals_pending
729
730
@staticmethod
731
def _datetime_to_dbus(dt, variant_level=0):
732
"""Convert a UTC datetime.datetime() to a D-Bus type."""
733
return dbus.String(dt.isoformat(),
734
variant_level=variant_level)
735
736
def enable(self):
737
oldstate = getattr(self, u"enabled", False)
738
r = Client.enable(self)
739
if oldstate != self.enabled:
740
# Emit D-Bus signals
741
self.PropertyChanged(dbus.String(u"enabled"),
742
dbus.Boolean(True, variant_level=1))
743
self.PropertyChanged(
744
dbus.String(u"last_enabled"),
745
self._datetime_to_dbus(self.last_enabled,
746
variant_level=1))
747
return r
748
749
def disable(self, quiet = False):
750
oldstate = getattr(self, u"enabled", False)
751
r = Client.disable(self, quiet=quiet)
752
if not quiet and oldstate != self.enabled:
753
# Emit D-Bus signal
754
self.PropertyChanged(dbus.String(u"enabled"),
755
dbus.Boolean(False, variant_level=1))
756
return r
1055
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1059
""" Modify a variable so that it's a property which announces
1060
its changes to DBus.
1061
1062
transform_fun: Function that takes a value and a variant_level
1063
and transforms it to a D-Bus type.
1064
dbus_name: D-Bus name of the variable
1065
type_func: Function that transform the value before sending it
1066
to the D-Bus. Default: no transform
1067
variant_level: D-Bus variant level. Default: 1
1068
"""
1069
attrname = "_{0}".format(dbus_name)
1070
def setter(self, value):
1071
if hasattr(self, "dbus_object_path"):
1072
if (not hasattr(self, attrname) or
1073
type_func(getattr(self, attrname, None))
1074
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1080
setattr(self, attrname, value)
1081
1082
return property(lambda self: getattr(self, attrname), setter)
1083
1084
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1087
"ApprovalPending",
1088
type_func = bool)
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1091
"LastEnabled")
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1096
"LastCheckedOK")
1097
last_approval_request = notifychangeproperty(
1098
datetime_to_dbus, "LastApprovalRequest")
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1105
approval_duration = notifychangeproperty(
1106
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1108
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1112
extended_timeout = notifychangeproperty(
1113
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1120
1121
del notifychangeproperty
757
1122
758
1123
def __del__(self, *args, **kwargs):
759
1124
try:
760
1125
self.remove_from_connection()
761
1126
except LookupError:
762
1127
pass
763
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
if hasattr(DBusObjectWithProperties, "__del__"):
764
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
765
1130
Client.__del__(self, *args, **kwargs)
766
1131
768
1133
*args, **kwargs):
769
1134
self.checker_callback_tag = None
770
1135
self.checker = None
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"checker_running"),
773
dbus.Boolean(False, variant_level=1))
774
1136
if os.WIFEXITED(condition):
775
1137
exitstatus = os.WEXITSTATUS(condition)
776
1138
# Emit D-Bus signal
786
1148
return Client.checker_callback(self, pid, condition, command,
787
1149
*args, **kwargs)
788
1150
789
def checked_ok(self, *args, **kwargs):
790
r = Client.checked_ok(self, *args, **kwargs)
791
# Emit D-Bus signal
792
self.PropertyChanged(
793
dbus.String(u"last_checked_ok"),
794
(self._datetime_to_dbus(self.last_checked_ok,
795
variant_level=1)))
796
return r
797
798
1151
def start_checker(self, *args, **kwargs):
799
1152
old_checker = self.checker
800
1153
if self.checker is not None:
807
1160
and old_checker_pid != self.checker.pid):
808
1161
# Emit D-Bus signal
809
1162
self.CheckerStarted(self.current_checker_command)
810
self.PropertyChanged(
811
dbus.String(u"checker_running"),
812
dbus.Boolean(True, variant_level=1))
813
1163
return r
814
1164
815
def stop_checker(self, *args, **kwargs):
816
old_checker = getattr(self, u"checker", None)
817
r = Client.stop_checker(self, *args, **kwargs)
818
if (old_checker is not None
819
and getattr(self, u"checker", None) is None):
820
self.PropertyChanged(dbus.String(u"checker_running"),
821
dbus.Boolean(False, variant_level=1))
822
return r
823
824
1165
def _reset_approved(self):
825
self._approved = None
1166
self.approved = None
826
1167
return False
827
1168
828
1169
def approve(self, value=True):
829
1170
self.send_changedstate()
830
self._approved = value
831
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
1171
self.approved = value
1172
gobject.timeout_add(timedelta_to_milliseconds
1173
(self.approval_duration),
832
1174
self._reset_approved)
833
1175
834
1176
835
1177
## D-Bus methods, signals & properties
836
_interface = u"se.bsnet.fukt.Mandos.Client"
1178
_interface = "se.recompile.Mandos.Client"
837
1179
838
1180
## Signals
839
1181
840
1182
# CheckerCompleted - signal
841
@dbus.service.signal(_interface, signature=u"nxs")
1183
@dbus.service.signal(_interface, signature="nxs")
842
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
843
1185
"D-Bus signal"
844
1186
pass
845
1187
846
1188
# CheckerStarted - signal
847
@dbus.service.signal(_interface, signature=u"s")
1189
@dbus.service.signal(_interface, signature="s")
848
1190
def CheckerStarted(self, command):
849
1191
"D-Bus signal"
850
1192
pass
851
1193
852
1194
# PropertyChanged - signal
853
@dbus.service.signal(_interface, signature=u"sv")
1195
@dbus.service.signal(_interface, signature="sv")
854
1196
def PropertyChanged(self, property, value):
855
1197
"D-Bus signal"
856
1198
pass
865
1207
pass
866
1208
867
1209
# Rejected - signal
868
@dbus.service.signal(_interface, signature=u"s")
1210
@dbus.service.signal(_interface, signature="s")
869
1211
def Rejected(self, reason):
870
1212
"D-Bus signal"
871
1213
pass
872
1214
873
1215
# NeedApproval - signal
874
@dbus.service.signal(_interface, signature=u"db")
1216
@dbus.service.signal(_interface, signature="tb")
875
1217
def NeedApproval(self, timeout, default):
876
1218
"D-Bus signal"
1219
return self.need_approval()
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
877
1227
pass
878
1228
879
1229
## Methods
880
1230
881
1231
# Approve - method
882
@dbus.service.method(_interface, in_signature=u"b")
1232
@dbus.service.method(_interface, in_signature="b")
883
1233
def Approve(self, value):
884
1234
self.approve(value)
885
1235
886
1236
# CheckedOK - method
887
1237
@dbus.service.method(_interface)
888
1238
def CheckedOK(self):
889
return self.checked_ok()
1239
self.checked_ok()
890
1240
891
1241
# Enable - method
892
1242
@dbus.service.method(_interface)
913
1263
914
1264
## Properties
915
1265
916
# approved_pending - property
917
@dbus_service_property(_interface, signature=u"b", access=u"read")
918
def approved_pending_dbus_property(self):
1266
# ApprovalPending - property
1267
@dbus_service_property(_interface, signature="b", access="read")
1268
def ApprovalPending_dbus_property(self):
919
1269
return dbus.Boolean(bool(self.approvals_pending))
920
1270
921
# approved_by_default - property
922
@dbus_service_property(_interface, signature=u"b",
923
access=u"readwrite")
924
def approved_by_default_dbus_property(self):
925
return dbus.Boolean(self.approved_by_default)
926
927
# approved_delay - property
928
@dbus_service_property(_interface, signature=u"t",
929
access=u"readwrite")
930
def approved_delay_dbus_property(self):
931
return dbus.UInt64(self.approved_delay_milliseconds())
932
933
# approved_duration - property
934
@dbus_service_property(_interface, signature=u"t",
935
access=u"readwrite")
936
def approved_duration_dbus_property(self):
937
return dbus.UInt64(self._timedelta_to_milliseconds(
938
self.approved_duration))
939
940
# name - property
941
@dbus_service_property(_interface, signature=u"s", access=u"read")
942
def name_dbus_property(self):
1271
# ApprovedByDefault - property
1272
@dbus_service_property(_interface, signature="b",
1273
access="readwrite")
1274
def ApprovedByDefault_dbus_property(self, value=None):
1275
if value is None: # get
1276
return dbus.Boolean(self.approved_by_default)
1277
self.approved_by_default = bool(value)
1278
1279
# ApprovalDelay - property
1280
@dbus_service_property(_interface, signature="t",
1281
access="readwrite")
1282
def ApprovalDelay_dbus_property(self, value=None):
1283
if value is None: # get
1284
return dbus.UInt64(self.approval_delay_milliseconds())
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1286
1287
# ApprovalDuration - property
1288
@dbus_service_property(_interface, signature="t",
1289
access="readwrite")
1290
def ApprovalDuration_dbus_property(self, value=None):
1291
if value is None: # get
1292
return dbus.UInt64(timedelta_to_milliseconds(
1293
self.approval_duration))
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1295
1296
# Name - property
1297
@dbus_service_property(_interface, signature="s", access="read")
1298
def Name_dbus_property(self):
943
1299
return dbus.String(self.name)
944
1300
945
# fingerprint - property
946
@dbus_service_property(_interface, signature=u"s", access=u"read")
947
def fingerprint_dbus_property(self):
1301
# Fingerprint - property
1302
@dbus_service_property(_interface, signature="s", access="read")
1303
def Fingerprint_dbus_property(self):
948
1304
return dbus.String(self.fingerprint)
949
1305
950
# host - property
951
@dbus_service_property(_interface, signature=u"s",
952
access=u"readwrite")
953
def host_dbus_property(self, value=None):
1306
# Host - property
1307
@dbus_service_property(_interface, signature="s",
1308
access="readwrite")
1309
def Host_dbus_property(self, value=None):
954
1310
if value is None: # get
955
1311
return dbus.String(self.host)
956
self.host = value
957
# Emit D-Bus signal
958
self.PropertyChanged(dbus.String(u"host"),
959
dbus.String(value, variant_level=1))
960
961
# created - property
962
@dbus_service_property(_interface, signature=u"s", access=u"read")
963
def created_dbus_property(self):
964
return dbus.String(self._datetime_to_dbus(self.created))
965
966
# last_enabled - property
967
@dbus_service_property(_interface, signature=u"s", access=u"read")
968
def last_enabled_dbus_property(self):
969
if self.last_enabled is None:
970
return dbus.String(u"")
971
return dbus.String(self._datetime_to_dbus(self.last_enabled))
972
973
# enabled - property
974
@dbus_service_property(_interface, signature=u"b",
975
access=u"readwrite")
976
def enabled_dbus_property(self, value=None):
1312
self.host = unicode(value)
1313
1314
# Created - property
1315
@dbus_service_property(_interface, signature="s", access="read")
1316
def Created_dbus_property(self):
1317
return datetime_to_dbus(self.created)
1318
1319
# LastEnabled - property
1320
@dbus_service_property(_interface, signature="s", access="read")
1321
def LastEnabled_dbus_property(self):
1322
return datetime_to_dbus(self.last_enabled)
1323
1324
# Enabled - property
1325
@dbus_service_property(_interface, signature="b",
1326
access="readwrite")
1327
def Enabled_dbus_property(self, value=None):
977
1328
if value is None: # get
978
1329
return dbus.Boolean(self.enabled)
979
1330
if value:
981
1332
else:
982
1333
self.disable()
983
1334
984
# last_checked_ok - property
985
@dbus_service_property(_interface, signature=u"s",
986
access=u"readwrite")
987
def last_checked_ok_dbus_property(self, value=None):
1335
# LastCheckedOK - property
1336
@dbus_service_property(_interface, signature="s",
1337
access="readwrite")
1338
def LastCheckedOK_dbus_property(self, value=None):
988
1339
if value is not None:
989
1340
self.checked_ok()
990
1341
return
991
if self.last_checked_ok is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self
994
.last_checked_ok))
995
996
# timeout - property
997
@dbus_service_property(_interface, signature=u"t",
998
access=u"readwrite")
999
def timeout_dbus_property(self, value=None):
1342
return datetime_to_dbus(self.last_checked_ok)
1343
1344
# Expires - property
1345
@dbus_service_property(_interface, signature="s", access="read")
1346
def Expires_dbus_property(self):
1347
return datetime_to_dbus(self.expires)
1348
1349
# LastApprovalRequest - property
1350
@dbus_service_property(_interface, signature="s", access="read")
1351
def LastApprovalRequest_dbus_property(self):
1352
return datetime_to_dbus(self.last_approval_request)
1353
1354
# Timeout - property
1355
@dbus_service_property(_interface, signature="t",
1356
access="readwrite")
1357
def Timeout_dbus_property(self, value=None):
1000
1358
if value is None: # get
1001
1359
return dbus.UInt64(self.timeout_milliseconds())
1002
1360
self.timeout = datetime.timedelta(0, 0, 0, value)
1003
# Emit D-Bus signal
1004
self.PropertyChanged(dbus.String(u"timeout"),
1005
dbus.UInt64(value, variant_level=1))
1006
if getattr(self, u"disable_initiator_tag", None) is None:
1361
if getattr(self, "disable_initiator_tag", None) is None:
1007
1362
return
1008
1363
# Reschedule timeout
1009
1364
gobject.source_remove(self.disable_initiator_tag)
1010
1365
self.disable_initiator_tag = None
1011
time_to_die = (self.
1012
_timedelta_to_milliseconds((self
1013
.last_checked_ok
1014
+ self.timeout)
1015
- datetime.datetime
1016
.utcnow()))
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1017
1372
if time_to_die <= 0:
1018
1373
# The timeout has passed
1019
1374
self.disable()
1020
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1021
1379
self.disable_initiator_tag = (gobject.timeout_add
1022
1380
(time_to_die, self.disable))
1023
1381
1024
# interval - property
1025
@dbus_service_property(_interface, signature=u"t",
1026
access=u"readwrite")
1027
def interval_dbus_property(self, value=None):
1382
# ExtendedTimeout - property
1383
@dbus_service_property(_interface, signature="t",
1384
access="readwrite")
1385
def ExtendedTimeout_dbus_property(self, value=None):
1386
if value is None: # get
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1389
1390
# Interval - property
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1393
def Interval_dbus_property(self, value=None):
1028
1394
if value is None: # get
1029
1395
return dbus.UInt64(self.interval_milliseconds())
1030
1396
self.interval = datetime.timedelta(0, 0, 0, value)
1031
# Emit D-Bus signal
1032
self.PropertyChanged(dbus.String(u"interval"),
1033
dbus.UInt64(value, variant_level=1))
1034
if getattr(self, u"checker_initiator_tag", None) is None:
1397
if getattr(self, "checker_initiator_tag", None) is None:
1035
1398
return
1036
# Reschedule checker run
1037
gobject.source_remove(self.checker_initiator_tag)
1038
self.checker_initiator_tag = (gobject.timeout_add
1039
(value, self.start_checker))
1040
self.start_checker() # Start one now, too
1041
1042
# checker - property
1043
@dbus_service_property(_interface, signature=u"s",
1044
access=u"readwrite")
1045
def checker_dbus_property(self, value=None):
1399
if self.enabled:
1400
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
1406
# Checker - property
1407
@dbus_service_property(_interface, signature="s",
1408
access="readwrite")
1409
def Checker_dbus_property(self, value=None):
1046
1410
if value is None: # get
1047
1411
return dbus.String(self.checker_command)
1048
self.checker_command = value
1049
# Emit D-Bus signal
1050
self.PropertyChanged(dbus.String(u"checker"),
1051
dbus.String(self.checker_command,
1052
variant_level=1))
1412
self.checker_command = unicode(value)
1053
1413
1054
# checker_running - property
1055
@dbus_service_property(_interface, signature=u"b",
1056
access=u"readwrite")
1057
def checker_running_dbus_property(self, value=None):
1414
# CheckerRunning - property
1415
@dbus_service_property(_interface, signature="b",
1416
access="readwrite")
1417
def CheckerRunning_dbus_property(self, value=None):
1058
1418
if value is None: # get
1059
1419
return dbus.Boolean(self.checker is not None)
1060
1420
if value:
1062
1422
else:
1063
1423
self.stop_checker()
1064
1424
1065
# object_path - property
1066
@dbus_service_property(_interface, signature=u"o", access=u"read")
1067
def object_path_dbus_property(self):
1425
# ObjectPath - property
1426
@dbus_service_property(_interface, signature="o", access="read")
1427
def ObjectPath_dbus_property(self):
1068
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1069
1429
1070
# secret = property
1071
@dbus_service_property(_interface, signature=u"ay",
1072
access=u"write", byte_arrays=True)
1073
def secret_dbus_property(self, value):
1430
# Secret = property
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
1433
def Secret_dbus_property(self, value):
1074
1434
self.secret = str(value)
1075
1435
1076
1436
del _interface
1082
1442
self._pipe.send(('init', fpr, address))
1083
1443
if not self._pipe.recv():
1084
1444
raise KeyError()
1085
1445
1086
1446
def __getattribute__(self, name):
1087
if(name == '_pipe'):
1447
if name == '_pipe':
1088
1448
return super(ProxyClient, self).__getattribute__(name)
1089
1449
self._pipe.send(('getattr', name))
1090
1450
data = self._pipe.recv()
1095
1455
self._pipe.send(('funcall', name, args, kwargs))
1096
1456
return self._pipe.recv()[1]
1097
1457
return func
1098
1458
1099
1459
def __setattr__(self, name, value):
1100
if(name == '_pipe'):
1460
if name == '_pipe':
1101
1461
return super(ProxyClient, self).__setattr__(name, value)
1102
1462
self._pipe.send(('setattr', name, value))
1103
1463
1104
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
1105
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
1106
1470
"""A class to handle client connections.
1107
1471
1110
1474
1111
1475
def handle(self):
1112
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
1113
logger.info(u"TCP connection from: %s",
1477
logger.info("TCP connection from: %s",
1114
1478
unicode(self.client_address))
1115
logger.debug(u"Pipe FD: %d",
1479
logger.debug("Pipe FD: %d",
1116
1480
self.server.child_pipe.fileno())
1117
1481
1118
1482
session = (gnutls.connection
1119
1483
.ClientSession(self.request,
1120
1484
gnutls.connection
1121
1485
.X509Credentials()))
1122
1486
1123
1487
# Note: gnutls.connection.X509Credentials is really a
1124
1488
# generic GnuTLS certificate credentials object so long as
1125
1489
# no X.509 keys are added to it. Therefore, we can use it
1126
1490
# here despite using OpenPGP certificates.
1127
1128
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1129
# u"+AES-256-CBC", u"+SHA1",
1130
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1131
# u"+DHE-DSS"))
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
1132
1496
# Use a fallback default, since this MUST be set.
1133
1497
priority = self.server.gnutls_priority
1134
1498
if priority is None:
1135
priority = u"NORMAL"
1499
priority = "NORMAL"
1136
1500
(gnutls.library.functions
1137
1501
.gnutls_priority_set_direct(session._c_object,
1138
1502
priority, None))
1139
1503
1140
1504
# Start communication using the Mandos protocol
1141
1505
# Get protocol number
1142
1506
line = self.request.makefile().readline()
1143
logger.debug(u"Protocol version: %r", line)
1507
logger.debug("Protocol version: %r", line)
1144
1508
try:
1145
1509
if int(line.strip().split()[0]) > 1:
1146
1510
raise RuntimeError
1147
except (ValueError, IndexError, RuntimeError), error:
1148
logger.error(u"Unknown protocol version: %s", error)
1511
except (ValueError, IndexError, RuntimeError) as error:
1512
logger.error("Unknown protocol version: %s", error)
1149
1513
return
1150
1514
1151
1515
# Start GnuTLS connection
1152
1516
try:
1153
1517
session.handshake()
1154
except gnutls.errors.GNUTLSError, error:
1155
logger.warning(u"Handshake failed: %s", error)
1518
except gnutls.errors.GNUTLSError as error:
1519
logger.warning("Handshake failed: %s", error)
1156
1520
# Do not run session.bye() here: the session is not
1157
1521
# established. Just abandon the request.
1158
1522
return
1159
logger.debug(u"Handshake succeeded")
1160
1523
logger.debug("Handshake succeeded")
1524
1161
1525
approval_required = False
1162
1526
try:
1163
1527
try:
1164
1528
fpr = self.fingerprint(self.peer_certificate
1165
1529
(session))
1166
except (TypeError, gnutls.errors.GNUTLSError), error:
1167
logger.warning(u"Bad certificate: %s", error)
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1168
1533
return
1169
logger.debug(u"Fingerprint: %s", fpr)
1170
1534
logger.debug("Fingerprint: %s", fpr)
1535
1171
1536
try:
1172
1537
client = ProxyClient(child_pipe, fpr,
1173
1538
self.client_address)
1174
1539
except KeyError:
1175
1540
return
1176
1541
1177
if client.approved_delay:
1178
delay = client.approved_delay
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
1546
if client.approval_delay:
1547
delay = client.approval_delay
1179
1548
client.approvals_pending += 1
1180
1549
approval_required = True
1181
1550
1182
1551
while True:
1183
1552
if not client.enabled:
1184
logger.warning(u"Client %s is disabled",
1553
logger.info("Client %s is disabled",
1185
1554
client.name)
1186
1555
if self.server.use_dbus:
1187
1556
# Emit D-Bus signal
1188
client.Rejected("Disabled")
1557
client.Rejected("Disabled")
1189
1558
return
1190
1559
1191
if client._approved or not client.approved_delay:
1560
if client.approved or not client.approval_delay:
1192
1561
#We are approved or approval is disabled
1193
1562
break
1194
elif client._approved is None:
1195
logger.info(u"Client %s need approval",
1563
elif client.approved is None:
1564
logger.info("Client %s needs approval",
1196
1565
client.name)
1197
1566
if self.server.use_dbus:
1198
1567
# Emit D-Bus signal
1199
1568
client.NeedApproval(
1200
client.approved_delay_milliseconds(),
1569
client.approval_delay_milliseconds(),
1201
1570
client.approved_by_default)
1202
1571
else:
1203
logger.warning(u"Client %s was not approved",
1572
logger.warning("Client %s was not approved",
1204
1573
client.name)
1205
1574
if self.server.use_dbus:
1206
1575
# Emit D-Bus signal
1207
client.Rejected("Disapproved")
1576
client.Rejected("Denied")
1208
1577
return
1209
1578
1210
1579
#wait until timeout or approved
1211
#x = float(client._timedelta_to_milliseconds(delay))
1212
1580
time = datetime.datetime.now()
1213
1581
client.changedstate.acquire()
1214
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
1215
1585
client.changedstate.release()
1216
1586
time2 = datetime.datetime.now()
1217
1587
if (time2 - time) >= delay:
1221
1591
client.name)
1222
1592
if self.server.use_dbus:
1223
1593
# Emit D-Bus signal
1224
client.Rejected("Time out")
1594
client.Rejected("Approval timed out")
1225
1595
return
1226
1596
else:
1227
1597
break
1232
1602
while sent_size < len(client.secret):
1233
1603
try:
1234
1604
sent = session.send(client.secret[sent_size:])
1235
except (gnutls.errors.GNUTLSError), error:
1605
except gnutls.errors.GNUTLSError as error:
1236
1606
logger.warning("gnutls send failed")
1237
1607
return
1238
logger.debug(u"Sent: %d, remaining: %d",
1608
logger.debug("Sent: %d, remaining: %d",
1239
1609
sent, len(client.secret)
1240
1610
- (sent_size + sent))
1241
1611
sent_size += sent
1242
1243
logger.info(u"Sending secret to %s", client.name)
1244
# bump the timeout as if seen
1245
client.checked_ok()
1612
1613
logger.info("Sending secret to %s", client.name)
1614
# bump the timeout using extended_timeout
1615
client.checked_ok(client.extended_timeout)
1246
1616
if self.server.use_dbus:
1247
1617
# Emit D-Bus signal
1248
1618
client.GotSecret()
1252
1622
client.approvals_pending -= 1
1253
1623
try:
1254
1624
session.bye()
1255
except (gnutls.errors.GNUTLSError), error:
1256
logger.warning("gnutls bye failed")
1625
except gnutls.errors.GNUTLSError as error:
1626
logger.warning("GnuTLS bye failed")
1257
1627
1258
1628
@staticmethod
1259
1629
def peer_certificate(session):
1269
1639
.gnutls_certificate_get_peers
1270
1640
(session._c_object, ctypes.byref(list_size)))
1271
1641
if not bool(cert_list) and list_size.value != 0:
1272
raise gnutls.errors.GNUTLSError(u"error getting peer"
1273
u" certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
1274
1644
if list_size.value == 0:
1275
1645
return None
1276
1646
cert = cert_list[0]
1302
1672
if crtverify.value != 0:
1303
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1304
1674
raise (gnutls.errors.CertificateSecurityError
1305
(u"Verify failed"))
1675
("Verify failed"))
1306
1676
# New buffer for the fingerprint
1307
1677
buf = ctypes.create_string_buffer(20)
1308
1678
buf_len = ctypes.c_size_t()
1315
1685
# Convert the buffer to a Python bytestring
1316
1686
fpr = ctypes.string_at(buf, buf_len.value)
1317
1687
# Convert the bytestring to hexadecimal notation
1318
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
hex_fpr = binascii.hexlify(fpr).upper()
1319
1689
return hex_fpr
1320
1690
1321
1691
1324
1694
def sub_process_main(self, request, address):
1325
1695
try:
1326
1696
self.finish_request(request, address)
1327
except:
1697
except Exception:
1328
1698
self.handle_error(request, address)
1329
1699
self.close_request(request)
1330
1700
1331
1701
def process_request(self, request, address):
1332
1702
"""Start a new process to process the request."""
1333
multiprocessing.Process(target = self.sub_process_main,
1334
args = (request, address)).start()
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
1706
proc.start()
1707
return proc
1708
1335
1709
1336
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1337
1711
""" adds a pipe to the MixIn """
1341
1715
This function creates a new pipe in self.pipe
1342
1716
"""
1343
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1344
1345
super(MultiprocessingMixInWithPipe,
1346
self).process_request(request, client_address)
1718
1719
proc = MultiprocessingMixIn.process_request(self, request,
1720
client_address)
1347
1721
self.child_pipe.close()
1348
self.add_pipe(parent_pipe)
1349
1350
def add_pipe(self, parent_pipe):
1722
self.add_pipe(parent_pipe, proc)
1723
1724
def add_pipe(self, parent_pipe, proc):
1351
1725
"""Dummy function; override as necessary"""
1352
pass
1726
raise NotImplementedError
1727
1353
1728
1354
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1355
1730
socketserver.TCPServer, object):
1373
1748
bind to an address or port if they were not specified."""
1374
1749
if self.interface is not None:
1375
1750
if SO_BINDTODEVICE is None:
1376
logger.error(u"SO_BINDTODEVICE does not exist;"
1377
u" cannot bind to interface %s",
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1378
1753
self.interface)
1379
1754
else:
1380
1755
try:
1381
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1382
1757
SO_BINDTODEVICE,
1383
1758
str(self.interface
1384
+ u'\0'))
1385
except socket.error, error:
1759
+ '\0'))
1760
except socket.error as error:
1386
1761
if error[0] == errno.EPERM:
1387
logger.error(u"No permission to"
1388
u" bind to interface %s",
1762
logger.error("No permission to"
1763
" bind to interface %s",
1389
1764
self.interface)
1390
1765
elif error[0] == errno.ENOPROTOOPT:
1391
logger.error(u"SO_BINDTODEVICE not available;"
1392
u" cannot bind to interface %s",
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1393
1768
self.interface)
1394
1769
else:
1395
1770
raise
1397
1772
if self.server_address[0] or self.server_address[1]:
1398
1773
if not self.server_address[0]:
1399
1774
if self.address_family == socket.AF_INET6:
1400
any_address = u"::" # in6addr_any
1775
any_address = "::" # in6addr_any
1401
1776
else:
1402
1777
any_address = socket.INADDR_ANY
1403
1778
self.server_address = (any_address,
1430
1805
self.enabled = False
1431
1806
self.clients = clients
1432
1807
if self.clients is None:
1433
self.clients = set()
1808
self.clients = {}
1434
1809
self.use_dbus = use_dbus
1435
1810
self.gnutls_priority = gnutls_priority
1436
1811
IPv6_TCPServer.__init__(self, server_address,
1440
1815
def server_activate(self):
1441
1816
if self.enabled:
1442
1817
return socketserver.TCPServer.server_activate(self)
1818
1443
1819
def enable(self):
1444
1820
self.enabled = True
1445
def add_pipe(self, parent_pipe):
1821
1822
def add_pipe(self, parent_pipe, proc):
1446
1823
# Call "handle_ipc" for both data and EOF events
1447
1824
gobject.io_add_watch(parent_pipe.fileno(),
1448
1825
gobject.IO_IN | gobject.IO_HUP,
1449
1826
functools.partial(self.handle_ipc,
1450
parent_pipe = parent_pipe))
1451
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1452
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1453
client_object=None):
1832
proc = None, client_object=None):
1454
1833
condition_names = {
1455
gobject.IO_IN: u"IN", # There is data to read.
1456
gobject.IO_OUT: u"OUT", # Data can be written (without
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1457
1836
# blocking).
1458
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1459
gobject.IO_ERR: u"ERR", # Error condition.
1460
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1461
1840
# broken, usually for pipes and
1462
1841
# sockets).
1463
1842
}
1465
1844
for cond, name in
1466
1845
condition_names.iteritems()
1467
1846
if cond & condition)
1468
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1469
conditions_string)
1470
1471
# error or the other end of multiprocessing.Pipe has closed
1847
# error, or the other end of multiprocessing.Pipe has closed
1472
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1849
# Wait for other process to exit
1850
proc.join()
1473
1851
return False
1474
1852
1475
1853
# Read a request from the child
1476
1854
request = parent_pipe.recv()
1477
logger.debug(u"IPC request: %s", repr(request))
1478
1855
command = request[0]
1479
1856
1480
1857
if command == 'init':
1481
1858
fpr = request[1]
1482
1859
address = request[2]
1483
1860
1484
for c in self.clients:
1861
for c in self.clients.itervalues():
1485
1862
if c.fingerprint == fpr:
1486
1863
client = c
1487
1864
break
1488
1865
else:
1489
logger.warning(u"Client not found for fingerprint: %s, ad"
1490
u"dress: %s", fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
1491
1868
if self.use_dbus:
1492
1869
# Emit D-Bus signal
1493
mandos_dbus_service.ClientNotFound(fpr, address)
1870
mandos_dbus_service.ClientNotFound(fpr,
1871
address[0])
1494
1872
parent_pipe.send(False)
1495
1873
return False
1496
1874
1497
1875
gobject.io_add_watch(parent_pipe.fileno(),
1498
1876
gobject.IO_IN | gobject.IO_HUP,
1499
1877
functools.partial(self.handle_ipc,
1500
parent_pipe = parent_pipe,
1501
client_object = client))
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
1502
1883
parent_pipe.send(True)
1503
# remove the old hook in favor of the new above hook on same fileno
1884
# remove the old hook in favor of the new above hook on
1885
# same fileno
1504
1886
return False
1505
1887
if command == 'funcall':
1506
1888
funcname = request[1]
1507
1889
args = request[2]
1508
1890
kwargs = request[3]
1509
1891
1510
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1511
1892
parent_pipe.send(('data', getattr(client_object,
1893
funcname)(*args,
1894
**kwargs)))
1895
1512
1896
if command == 'getattr':
1513
1897
attrname = request[1]
1514
1898
if callable(client_object.__getattribute__(attrname)):
1515
1899
parent_pipe.send(('function',))
1516
1900
else:
1517
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1518
1903
1519
1904
if command == 'setattr':
1520
1905
attrname = request[1]
1521
1906
value = request[2]
1522
1907
setattr(client_object, attrname, value)
1523
1908
1524
1909
return True
1525
1910
1526
1911
1527
1912
def string_to_delta(interval):
1528
1913
"""Parse a string and return a datetime.timedelta
1529
1914
1530
>>> string_to_delta(u'7d')
1915
>>> string_to_delta('7d')
1531
1916
datetime.timedelta(7)
1532
>>> string_to_delta(u'60s')
1917
>>> string_to_delta('60s')
1533
1918
datetime.timedelta(0, 60)
1534
>>> string_to_delta(u'60m')
1919
>>> string_to_delta('60m')
1535
1920
datetime.timedelta(0, 3600)
1536
>>> string_to_delta(u'24h')
1921
>>> string_to_delta('24h')
1537
1922
datetime.timedelta(1)
1538
>>> string_to_delta(u'1w')
1923
>>> string_to_delta('1w')
1539
1924
datetime.timedelta(7)
1540
>>> string_to_delta(u'5m 30s')
1925
>>> string_to_delta('5m 30s')
1541
1926
datetime.timedelta(0, 330)
1542
1927
"""
1543
1928
timevalue = datetime.timedelta(0)
1545
1930
try:
1546
1931
suffix = unicode(s[-1])
1547
1932
value = int(s[:-1])
1548
if suffix == u"d":
1933
if suffix == "d":
1549
1934
delta = datetime.timedelta(value)
1550
elif suffix == u"s":
1935
elif suffix == "s":
1551
1936
delta = datetime.timedelta(0, value)
1552
elif suffix == u"m":
1937
elif suffix == "m":
1553
1938
delta = datetime.timedelta(0, 0, 0, 0, value)
1554
elif suffix == u"h":
1939
elif suffix == "h":
1555
1940
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1556
elif suffix == u"w":
1941
elif suffix == "w":
1557
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1558
1943
else:
1559
raise ValueError(u"Unknown suffix %r" % suffix)
1560
except (ValueError, IndexError), e:
1561
raise ValueError(e.message)
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
1946
raise ValueError(*(e.args))
1562
1947
timevalue += delta
1563
1948
return timevalue
1564
1949
1565
1950
1566
def if_nametoindex(interface):
1567
"""Call the C function if_nametoindex(), or equivalent
1568
1569
Note: This function cannot accept a unicode string."""
1570
global if_nametoindex
1571
try:
1572
if_nametoindex = (ctypes.cdll.LoadLibrary
1573
(ctypes.util.find_library(u"c"))
1574
.if_nametoindex)
1575
except (OSError, AttributeError):
1576
logger.warning(u"Doing if_nametoindex the hard way")
1577
def if_nametoindex(interface):
1578
"Get an interface index the hard way, i.e. using fcntl()"
1579
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1580
with contextlib.closing(socket.socket()) as s:
1581
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1582
struct.pack(str(u"16s16x"),
1583
interface))
1584
interface_index = struct.unpack(str(u"I"),
1585
ifreq[16:20])[0]
1586
return interface_index
1587
return if_nametoindex(interface)
1588
1589
1590
1951
def daemon(nochdir = False, noclose = False):
1591
1952
"""See daemon(3). Standard BSD Unix function.
1592
1953
1595
1956
sys.exit()
1596
1957
os.setsid()
1597
1958
if not nochdir:
1598
os.chdir(u"/")
1959
os.chdir("/")
1599
1960
if os.fork():
1600
1961
sys.exit()
1601
1962
if not noclose:
1603
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1604
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
1605
1966
raise OSError(errno.ENODEV,
1606
u"%s not a character device"
1967
"%s not a character device"
1607
1968
% os.path.devnull)
1608
1969
os.dup2(null, sys.stdin.fileno())
1609
1970
os.dup2(null, sys.stdout.fileno())
1617
1978
##################################################################
1618
1979
# Parsing of options, both command line and config file
1619
1980
1620
parser = optparse.OptionParser(version = "%%prog %s" % version)
1621
parser.add_option("-i", u"--interface", type=u"string",
1622
metavar="IF", help=u"Bind to interface IF")
1623
parser.add_option("-a", u"--address", type=u"string",
1624
help=u"Address to listen for requests on")
1625
parser.add_option("-p", u"--port", type=u"int",
1626
help=u"Port number to receive requests on")
1627
parser.add_option("--check", action=u"store_true",
1628
help=u"Run self-test")
1629
parser.add_option("--debug", action=u"store_true",
1630
help=u"Debug mode; run in foreground and log to"
1631
u" terminal")
1632
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1633
help=u"Debug level for stdout output")
1634
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1635
u" priority string (see GnuTLS documentation)")
1636
parser.add_option("--servicename", type=u"string",
1637
metavar=u"NAME", help=u"Zeroconf service name")
1638
parser.add_option("--configdir", type=u"string",
1639
default=u"/etc/mandos", metavar=u"DIR",
1640
help=u"Directory to search for configuration"
1641
u" files")
1642
parser.add_option("--no-dbus", action=u"store_false",
1643
dest=u"use_dbus", help=u"Do not provide D-Bus"
1644
u" system bus interface")
1645
parser.add_option("--no-ipv6", action=u"store_false",
1646
dest=u"use_ipv6", help=u"Do not use IPv6")
1647
options = parser.parse_args()[0]
1981
parser = argparse.ArgumentParser()
1982
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
1984
help="show version number and exit")
1985
parser.add_argument("-i", "--interface", metavar="IF",
1986
help="Bind to interface IF")
1987
parser.add_argument("-a", "--address",
1988
help="Address to listen for requests on")
1989
parser.add_argument("-p", "--port", type=int,
1990
help="Port number to receive requests on")
1991
parser.add_argument("--check", action="store_true",
1992
help="Run self-test")
1993
parser.add_argument("--debug", action="store_true",
1994
help="Debug mode; run in foreground and log"
1995
" to terminal")
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
help="Debug level for stdout output")
1998
parser.add_argument("--priority", help="GnuTLS"
1999
" priority string (see GnuTLS documentation)")
2000
parser.add_argument("--servicename",
2001
metavar="NAME", help="Zeroconf service name")
2002
parser.add_argument("--configdir",
2003
default="/etc/mandos", metavar="DIR",
2004
help="Directory to search for configuration"
2005
" files")
2006
parser.add_argument("--no-dbus", action="store_false",
2007
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2009
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2011
parser.add_argument("--no-restore", action="store_false",
2012
dest="restore", help="Do not restore stored"
2013
" state")
2014
parser.add_argument("--statedir", metavar="DIR",
2015
help="Directory to save/restore state in")
2016
2017
options = parser.parse_args()
1648
2018
1649
2019
if options.check:
1650
2020
import doctest
1652
2022
sys.exit()
1653
2023
1654
2024
# Default values for config file for server-global settings
1655
server_defaults = { u"interface": u"",
1656
u"address": u"",
1657
u"port": u"",
1658
u"debug": u"False",
1659
u"priority":
1660
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1661
u"servicename": u"Mandos",
1662
u"use_dbus": u"True",
1663
u"use_ipv6": u"True",
1664
u"debuglevel": u"",
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
1665
2037
}
1666
2038
1667
2039
# Parse config file for server-global settings
1668
2040
server_config = configparser.SafeConfigParser(server_defaults)
1669
2041
del server_defaults
1670
2042
server_config.read(os.path.join(options.configdir,
1671
u"mandos.conf"))
2043
"mandos.conf"))
1672
2044
# Convert the SafeConfigParser object to a dict
1673
2045
server_settings = server_config.defaults()
1674
2046
# Use the appropriate methods on the non-string config options
1675
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1676
server_settings[option] = server_config.getboolean(u"DEFAULT",
2047
for option in ("debug", "use_dbus", "use_ipv6"):
2048
server_settings[option] = server_config.getboolean("DEFAULT",
1677
2049
option)
1678
2050
if server_settings["port"]:
1679
server_settings["port"] = server_config.getint(u"DEFAULT",
1680
u"port")
2051
server_settings["port"] = server_config.getint("DEFAULT",
2052
"port")
1681
2053
del server_config
1682
2054
1683
2055
# Override the settings from the config file with command line
1684
2056
# options, if set.
1685
for option in (u"interface", u"address", u"port", u"debug",
1686
u"priority", u"servicename", u"configdir",
1687
u"use_dbus", u"use_ipv6", u"debuglevel"):
2057
for option in ("interface", "address", "port", "debug",
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
1688
2061
value = getattr(options, option)
1689
2062
if value is not None:
1690
2063
server_settings[option] = value
1698
2071
##################################################################
1699
2072
1700
2073
# For convenience
1701
debug = server_settings[u"debug"]
1702
debuglevel = server_settings[u"debuglevel"]
1703
use_dbus = server_settings[u"use_dbus"]
1704
use_ipv6 = server_settings[u"use_ipv6"]
1705
1706
if server_settings[u"servicename"] != u"Mandos":
2074
debug = server_settings["debug"]
2075
debuglevel = server_settings["debuglevel"]
2076
use_dbus = server_settings["use_dbus"]
2077
use_ipv6 = server_settings["use_ipv6"]
2078
stored_state_path = os.path.join(server_settings["statedir"],
2079
stored_state_file)
2080
2081
if debug:
2082
initlogger(debug, logging.DEBUG)
2083
else:
2084
if not debuglevel:
2085
initlogger(debug)
2086
else:
2087
level = getattr(logging, debuglevel.upper())
2088
initlogger(debug, level)
2089
2090
if server_settings["servicename"] != "Mandos":
1707
2091
syslogger.setFormatter(logging.Formatter
1708
(u'Mandos (%s) [%%(process)d]:'
1709
u' %%(levelname)s: %%(message)s'
1710
% server_settings[u"servicename"]))
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
1711
2095
1712
2096
# Parse config file with clients
1713
client_defaults = { u"timeout": u"1h",
1714
u"interval": u"5m",
1715
u"checker": u"fping -q -- %%(host)s",
1716
u"host": u"",
1717
u"approved_delay": u"0s",
1718
u"approved_duration": u"1s",
1719
}
1720
client_config = configparser.SafeConfigParser(client_defaults)
1721
client_config.read(os.path.join(server_settings[u"configdir"],
1722
u"clients.conf"))
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2098
client_config.read(os.path.join(server_settings["configdir"],
2099
"clients.conf"))
1723
2100
1724
2101
global mandos_dbus_service
1725
2102
mandos_dbus_service = None
1726
2103
1727
tcp_server = MandosServer((server_settings[u"address"],
1728
server_settings[u"port"]),
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
1729
2106
ClientHandler,
1730
interface=server_settings[u"interface"],
2107
interface=(server_settings["interface"]
2108
or None),
1731
2109
use_ipv6=use_ipv6,
1732
2110
gnutls_priority=
1733
server_settings[u"priority"],
2111
server_settings["priority"],
1734
2112
use_dbus=use_dbus)
1735
pidfilename = u"/var/run/mandos.pid"
1736
try:
1737
pidfile = open(pidfilename, u"w")
1738
except IOError:
1739
logger.error(u"Could not open file %r", pidfilename)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2115
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
1740
2119
1741
2120
try:
1742
uid = pwd.getpwnam(u"_mandos").pw_uid
1743
gid = pwd.getpwnam(u"_mandos").pw_gid
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
1744
2123
except KeyError:
1745
2124
try:
1746
uid = pwd.getpwnam(u"mandos").pw_uid
1747
gid = pwd.getpwnam(u"mandos").pw_gid
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
1748
2127
except KeyError:
1749
2128
try:
1750
uid = pwd.getpwnam(u"nobody").pw_uid
1751
gid = pwd.getpwnam(u"nobody").pw_gid
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
1752
2131
except KeyError:
1753
2132
uid = 65534
1754
2133
gid = 65534
1755
2134
try:
1756
2135
os.setgid(gid)
1757
2136
os.setuid(uid)
1758
except OSError, error:
2137
except OSError as error:
1759
2138
if error[0] != errno.EPERM:
1760
2139
raise error
1761
2140
1762
# Enable all possible GnuTLS debugging
1763
1764
1765
if not debug and not debuglevel:
1766
syslogger.setLevel(logging.WARNING)
1767
console.setLevel(logging.WARNING)
1768
if debuglevel:
1769
level = getattr(logging, debuglevel.upper())
1770
syslogger.setLevel(level)
1771
console.setLevel(level)
1772
1773
2141
if debug:
2142
# Enable all possible GnuTLS debugging
2143
1774
2144
# "Use a log level over 10 to enable all debugging options."
1775
2145
# - GnuTLS manual
1776
2146
gnutls.library.functions.gnutls_global_set_log_level(11)
1777
2147
1778
2148
@gnutls.library.types.gnutls_log_func
1779
2149
def debug_gnutls(level, string):
1780
logger.debug(u"GnuTLS: %s", string[:-1])
2150
logger.debug("GnuTLS: %s", string[:-1])
1781
2151
1782
2152
(gnutls.library.functions
1783
2153
.gnutls_global_set_log_function(debug_gnutls))
1784
2154
1785
2155
# Redirect stdin so all checkers get /dev/null
1786
2156
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1787
2157
os.dup2(null, sys.stdin.fileno())
1788
2158
if null > 2:
1789
2159
os.close(null)
1790
else:
1791
# No console logging
1792
logger.removeHandler(console)
1793
2160
2161
# Need to fork before connecting to D-Bus
2162
if not debug:
2163
# Close all input and output, do double fork, etc.
2164
daemon()
2165
2166
gobject.threads_init()
1794
2167
1795
2168
global main_loop
1796
2169
# From the Avahi example code
1800
2173
# End of Avahi example code
1801
2174
if use_dbus:
1802
2175
try:
1803
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1804
2177
bus, do_not_queue=True)
1805
except dbus.exceptions.NameExistsException, e:
1806
logger.error(unicode(e) + u", disabling D-Bus")
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
1807
2183
use_dbus = False
1808
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1809
2185
tcp_server.use_dbus = False
1810
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1811
service = AvahiService(name = server_settings[u"servicename"],
1812
servicetype = u"_mandos._tcp",
1813
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1814
2191
if server_settings["interface"]:
1815
2192
service.interface = (if_nametoindex
1816
(str(server_settings[u"interface"])))
1817
1818
if not debug:
1819
# Close all input and output, do double fork, etc.
1820
daemon()
1821
2193
(str(server_settings["interface"])))
2194
1822
2195
global multiprocessing_manager
1823
2196
multiprocessing_manager = multiprocessing.Manager()
1824
2197
1825
2198
client_class = Client
1826
2199
if use_dbus:
1827
client_class = functools.partial(ClientDBus, bus = bus)
1828
def client_config_items(config, section):
1829
special_settings = {
1830
"approved_by_default":
1831
lambda: config.getboolean(section,
1832
"approved_by_default"),
1833
}
1834
for name, value in config.items(section):
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2205
clients_data = {}
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2222
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2231
try:
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
client[name] = value
2239
except KeyError:
2240
pass
2241
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2249
logger.warning(
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2255
logger.warning(
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2261
else:
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
1835
2266
try:
1836
yield (name, special_settings[name]())
1837
except KeyError:
1838
yield (name, value)
1839
1840
tcp_server.clients.update(set(
1841
client_class(name = section,
1842
config= dict(client_config_items(
1843
client_config, section)))
1844
for section in client_config.sections()))
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
2271
except PGPError:
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2277
2278
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2284
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
2289
1845
2290
if not tcp_server.clients:
1846
logger.warning(u"No clients defined")
2291
logger.warning("No clients defined")
1847
2292
1848
try:
1849
with pidfile:
1850
pid = os.getpid()
1851
pidfile.write(str(pid) + "\n")
1852
del pidfile
1853
except IOError:
1854
logger.error(u"Could not write to file %r with PID %d",
1855
pidfilename, pid)
1856
except NameError:
1857
# "pidfile" was never created
1858
pass
1859
del pidfilename
1860
1861
2293
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
2305
del pidfilename
1862
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
1863
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1864
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1865
2310
1867
2312
class MandosDBusService(dbus.service.Object):
1868
2313
"""A D-Bus proxy object"""
1869
2314
def __init__(self):
1870
dbus.service.Object.__init__(self, bus, u"/")
1871
_interface = u"se.bsnet.fukt.Mandos"
2315
dbus.service.Object.__init__(self, bus, "/")
2316
_interface = "se.recompile.Mandos"
1872
2317
1873
@dbus.service.signal(_interface, signature=u"o")
2318
@dbus.service.signal(_interface, signature="o")
1874
2319
def ClientAdded(self, objpath):
1875
2320
"D-Bus signal"
1876
2321
pass
1877
2322
1878
@dbus.service.signal(_interface, signature=u"ss")
2323
@dbus.service.signal(_interface, signature="ss")
1879
2324
def ClientNotFound(self, fingerprint, address):
1880
2325
"D-Bus signal"
1881
2326
pass
1882
2327
1883
@dbus.service.signal(_interface, signature=u"os")
2328
@dbus.service.signal(_interface, signature="os")
1884
2329
def ClientRemoved(self, objpath, name):
1885
2330
"D-Bus signal"
1886
2331
pass
1887
2332
1888
@dbus.service.method(_interface, out_signature=u"ao")
2333
@dbus.service.method(_interface, out_signature="ao")
1889
2334
def GetAllClients(self):
1890
2335
"D-Bus method"
1891
2336
return dbus.Array(c.dbus_object_path
1892
for c in tcp_server.clients)
2337
for c in
2338
tcp_server.clients.itervalues())
1893
2339
1894
2340
@dbus.service.method(_interface,
1895
out_signature=u"a{oa{sv}}")
2341
out_signature="a{oa{sv}}")
1896
2342
def GetAllClientsWithProperties(self):
1897
2343
"D-Bus method"
1898
2344
return dbus.Dictionary(
1899
((c.dbus_object_path, c.GetAll(u""))
1900
for c in tcp_server.clients),
1901
signature=u"oa{sv}")
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
2347
signature="oa{sv}")
1902
2348
1903
@dbus.service.method(_interface, in_signature=u"o")
2349
@dbus.service.method(_interface, in_signature="o")
1904
2350
def RemoveClient(self, object_path):
1905
2351
"D-Bus method"
1906
for c in tcp_server.clients:
2352
for c in tcp_server.clients.itervalues():
1907
2353
if c.dbus_object_path == object_path:
1908
tcp_server.clients.remove(c)
2354
del tcp_server.clients[c.name]
1909
2355
c.remove_from_connection()
1910
2356
# Don't signal anything except ClientRemoved
1911
2357
c.disable(quiet=True)
1916
2362
1917
2363
del _interface
1918
2364
1919
mandos_dbus_service = MandosDBusService()
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
1920
2368
1921
2369
def cleanup():
1922
2370
"Cleanup function; run on exit"
1923
2371
service.cleanup()
1924
2372
2373
multiprocessing.active_children()
2374
if not (tcp_server.clients or client_settings):
2375
return
2376
2377
# Store client before exiting. Secrets are encrypted with key
2378
# based on what config file has. If config file is
2379
# removed/edited, old secret will thus be unrecovable.
2380
clients = {}
2381
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
2383
key = client_settings[client.name]["secret"]
2384
client.encrypted_secret = pgp.encrypt(client.secret,
2385
key)
2386
client_dict = {}
2387
2388
# A list of attributes that can not be pickled
2389
# + secret.
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
2394
exclude.add(name)
2395
2396
client_dict["encrypted_secret"] = (client
2397
.encrypted_secret)
2398
for attr in client.client_structure:
2399
if attr not in exclude:
2400
client_dict[attr] = getattr(client, attr)
2401
2402
clients[client.name] = client_dict
2403
del client_settings[client.name]["secret"]
2404
2405
try:
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
os.rename(tempname, stored_state_path)
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
2416
if not debug:
2417
try:
2418
os.remove(tempname)
2419
except NameError:
2420
pass
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
2425
# Delete all clients, and settings from config
1925
2426
while tcp_server.clients:
1926
client = tcp_server.clients.pop()
2427
name, client = tcp_server.clients.popitem()
1927
2428
if use_dbus:
1928
2429
client.remove_from_connection()
1929
client.disable_hook = None
1930
2430
# Don't signal anything except ClientRemoved
1931
2431
client.disable(quiet=True)
1932
2432
if use_dbus:
1933
2433
# Emit D-Bus signal
1934
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
1935
2436
client.name)
2437
client_settings.clear()
1936
2438
1937
2439
atexit.register(cleanup)
1938
2440
1939
for client in tcp_server.clients:
2441
for client in tcp_server.clients.itervalues():
1940
2442
if use_dbus:
1941
2443
# Emit D-Bus signal
1942
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1943
client.enable()
2445
# Need to initiate checking of clients
2446
if client.enabled:
2447
client.init_checker()
1944
2448
1945
2449
tcp_server.enable()
1946
2450
tcp_server.server_activate()
1948
2452
# Find out what port we got
1949
2453
service.port = tcp_server.socket.getsockname()[1]
1950
2454
if use_ipv6:
1951
logger.info(u"Now listening on address %r, port %d,"
2455
logger.info("Now listening on address %r, port %d,"
1952
2456
" flowinfo %d, scope_id %d"
1953
2457
% tcp_server.socket.getsockname())
1954
2458
else: # IPv4
1955
logger.info(u"Now listening on address %r, port %d"
2459
logger.info("Now listening on address %r, port %d"
1956
2460
% tcp_server.socket.getsockname())
1957
2461
1958
2462
#service.interface = tcp_server.socket.getsockname()[3]
1961
2465
# From the Avahi example code
1962
2466
try:
1963
2467
service.activate()
1964
except dbus.exceptions.DBusException, error:
1965
logger.critical(u"DBusException: %s", error)
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
1966
2470
cleanup()
1967
2471
sys.exit(1)
1968
2472
# End of Avahi example code
1972
2476
(tcp_server.handle_request
1973
2477
(*args[2:], **kwargs) or True))
1974
2478
1975
logger.debug(u"Starting main loop")
2479
logger.debug("Starting main loop")
1976
2480
main_loop.run()
1977
except AvahiError, error:
1978
logger.critical(u"AvahiError: %s", error)
2481
except AvahiError as error:
2482
logger.critical("AvahiError: %s", error)
1979
2483
cleanup()
1980
2484
sys.exit(1)
1981
2485
except KeyboardInterrupt:
1982
2486
if debug:
1983
print >> sys.stderr
1984
logger.debug(u"Server received KeyboardInterrupt")
1985
logger.debug(u"Server exiting")
2487
print("", file=sys.stderr)
2488
logger.debug("Server received KeyboardInterrupt")
2489
logger.debug("Server exiting")
1986
2490
# Must run before the D-Bus bus name gets deregistered
1987
2491
cleanup()
1988
2492
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0