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- Committer: Björn Påhlsson
- Date: 2010-09-01 18:03:03 UTC
- mto: (237.7.1 mandos)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: belorn@fukt.bsnet.se-20100901180303-u47edb73fczu56ob
bug fixes that prevent problems when runing server as root
- files added:
- plugins.d/plymouth
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 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@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
62
61
import functools
63
62
import cPickle as pickle
64
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import multiprocessing
65
import types
66
import binascii
67
import tempfile
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64
69
65
import dbus
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66
import dbus.service
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71
import ctypes.util
76
72
import xml.dom.minidom
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import inspect
78
import GnuPGInterface
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74
80
75
try:
81
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
80
except ImportError:
86
81
SO_BINDTODEVICE = None
87
82
88
version = "1.5.3"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
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84
version = "1.0.14"
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logger = logging.Logger(u'mandos')
92
87
syslogger = (logging.handlers.SysLogHandler
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88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
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:
122
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)
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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
'--no-use-agent'])
147
148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
154
155
def __del__(self):
156
self._cleanup()
157
158
def _cleanup(self):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
170
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
211
100
212
101
class AvahiError(Exception):
213
102
def __init__(self, value, *args, **kwargs):
229
118
Attributes:
230
119
interface: integer; avahi.IF_UNSPEC or an interface index.
231
120
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
234
123
See <http://www.dns-sd.org/ServiceTypes.html>
235
124
port: integer; what port to announce
236
125
TXT: list of strings; TXT record for the service
245
134
"""
246
135
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
136
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
137
domain = u"", host = u"", max_renames = 32768,
249
138
protocol = avahi.PROTO_UNSPEC, bus = None):
250
139
self.interface = interface
251
140
self.name = name
260
149
self.group = None # our entry group
261
150
self.server = None
262
151
self.bus = bus
263
self.entry_group_state_changed_match = None
264
152
def rename(self):
265
153
"""Derived from the Avahi example code"""
266
154
if self.rename_count >= self.max_renames:
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
269
157
self.rename_count)
270
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
274
self.name)
158
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
160
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
162
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
165
% self.name))
275
166
self.remove()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
167
self.add()
282
168
self.rename_count += 1
283
169
def remove(self):
284
170
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
288
171
if self.group is not None:
289
172
self.group.Reset()
290
173
def add(self):
291
174
"""Derived from the Avahi example code"""
292
self.remove()
293
175
if self.group is None:
294
176
self.group = dbus.Interface(
295
177
self.bus.get_object(avahi.DBUS_NAME,
296
178
self.server.EntryGroupNew()),
297
179
avahi.DBUS_INTERFACE_ENTRY_GROUP)
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
183
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
302
184
self.name, self.type)
303
185
self.group.AddService(
304
186
self.interface,
311
193
self.group.Commit()
312
194
def entry_group_state_changed(self, state, error):
313
195
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
196
logger.debug(u"Avahi state change: %i", state)
315
197
316
198
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
199
logger.debug(u"Zeroconf service established.")
318
200
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
201
logger.warning(u"Zeroconf service name collision.")
320
202
self.rename()
321
203
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
204
logger.critical(u"Avahi: Error in group state changed %s",
323
205
unicode(error))
324
raise AvahiGroupError("State changed: %s"
206
raise AvahiGroupError(u"State changed: %s"
325
207
% unicode(error))
326
208
def cleanup(self):
327
209
"""Derived from the Avahi example code"""
328
210
if self.group is not None:
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
211
self.group.Free()
334
212
self.group = None
335
self.remove()
336
def server_state_changed(self, state, error=None):
213
def server_state_changed(self, state):
337
214
"""Derived from the Avahi example code"""
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
215
if state == avahi.SERVER_COLLISION:
216
logger.error(u"Zeroconf server name collision")
217
self.remove()
353
218
elif state == avahi.SERVER_RUNNING:
354
219
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
360
220
def activate(self):
361
221
"""Derived from the Avahi example code"""
362
222
if self.server is None:
363
223
self.server = dbus.Interface(
364
224
self.bus.get_object(avahi.DBUS_NAME,
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
225
avahi.DBUS_PATH_SERVER),
367
226
avahi.DBUS_INTERFACE_SERVER)
368
self.server.connect_to_signal("StateChanged",
227
self.server.connect_to_signal(u"StateChanged",
369
228
self.server_state_changed)
370
229
self.server_state_changed(self.server.GetState())
371
230
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
381
231
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
232
class Client(object):
389
233
"""A representation of a client host served by this server.
390
234
391
235
Attributes:
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
236
name: string; from the config file, used in log messages and
237
D-Bus identifiers
238
fingerprint: string (40 or 32 hexadecimal digits); used to
239
uniquely identify the client
240
secret: bytestring; sent verbatim (over TLS) to client
241
host: string; available for use by the checker command
242
created: datetime.datetime(); (UTC) object creation
243
last_enabled: datetime.datetime(); (UTC)
244
enabled: bool()
245
last_checked_ok: datetime.datetime(); (UTC) or None
246
timeout: datetime.timedelta(); How long from last_checked_ok
247
until this client is disabled
248
interval: datetime.timedelta(); How often to start a new checker
249
disable_hook: If set, called by disable() as disable_hook(self)
395
250
checker: subprocess.Popen(); a running checker process used
396
251
to see if the client lives.
397
252
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
253
checker_initiator_tag: a gobject event source tag, or None
254
disable_initiator_tag: - '' -
255
checker_callback_tag: - '' -
256
checker_command: string; External command which is run to check if
257
client lives. %() expansions are done at
401
258
runtime with vars(self) as dict, so that for
402
259
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
407
260
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
410
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
412
host: string; available for use by the checker command
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, -2 means no checker completed yet.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
421
D-Bus identifiers
422
secret: bytestring; sent verbatim (over TLS) to client
423
timeout: datetime.timedelta(); How long from last_checked_ok
424
until this client is disabled
425
extended_timeout: extra long timeout when secret has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
261
approved_delay: datetime.timedelta(); Time to wait for approval
262
_approved: bool(); 'None' if not yet approved/disapproved
263
approved_duration: datetime.timedelta(); Duration of one approval
429
264
"""
430
265
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
266
@staticmethod
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
445
272
446
273
def timeout_milliseconds(self):
447
274
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
275
return self._timedelta_to_milliseconds(self.timeout)
453
276
454
277
def interval_milliseconds(self):
455
278
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
279
return self._timedelta_to_milliseconds(self.interval)
280
281
def approved_delay_milliseconds(self):
282
return self._timedelta_to_milliseconds(self.approved_delay)
457
283
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
460
461
@staticmethod
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
468
"""
469
settings = {}
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
473
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
479
"enabled")
480
481
client["fingerprint"] = (section["fingerprint"].upper()
482
.replace(" ", ""))
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
488
"rb") as secfile:
489
client["secret"] = secfile.read()
490
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = -2
505
506
return settings
507
508
509
def __init__(self, settings, name = None):
284
def __init__(self, name = None, disable_hook=None, config=None):
510
285
"""Note: the 'checker' key in 'config' sets the
511
286
'checker_command' attribute and *not* the 'checker'
512
287
attribute."""
513
288
self.name = name
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
517
518
if self.enabled:
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
523
+ self.timeout)
524
else:
525
self.last_enabled = None
526
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
289
if config is None:
290
config = {}
291
logger.debug(u"Creating client %r", self.name)
529
292
# Uppercase and remove spaces from fingerprint for later
530
293
# comparison purposes with return value from the fingerprint()
531
294
# function
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
535
536
# attributes specific for this server instance
295
self.fingerprint = (config[u"fingerprint"].upper()
296
.replace(u" ", u""))
297
logger.debug(u" Fingerprint: %s", self.fingerprint)
298
if u"secret" in config:
299
self.secret = config[u"secret"].decode(u"base64")
300
elif u"secfile" in config:
301
with open(os.path.expanduser(os.path.expandvars
302
(config[u"secfile"])),
303
"rb") as secfile:
304
self.secret = secfile.read()
305
else:
306
#XXX Need to allow secret on demand!
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
537
317
self.checker = None
538
318
self.checker_initiator_tag = None
539
319
self.disable_initiator_tag = None
540
320
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
541
322
self.current_checker_command = None
542
self.approved = None
323
self.last_connect = None
543
324
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
549
if not attr.startswith("_")]
550
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
556
if not name.startswith("_"):
557
self.client_structure.append(name)
558
559
# Send notice to process children that client state has changed
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
327
False)
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())
333
560
334
def send_changedstate(self):
561
with self.changedstate:
562
self.changedstate.notify_all()
563
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
564
339
def enable(self):
565
340
"""Start this client's checker and timeout hooks"""
566
if getattr(self, "enabled", False):
341
if getattr(self, u"enabled", False):
567
342
# Already enabled
568
343
return
569
344
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
572
345
self.last_enabled = datetime.datetime.utcnow()
573
self.init_checker()
574
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
578
return False
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
586
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
590
self.stop_checker()
591
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
593
return False
594
595
def __del__(self):
596
self.disable()
597
598
def init_checker(self):
599
346
# Schedule a new checker to be started an 'interval' from now,
600
347
# and every interval from then on.
601
348
self.checker_initiator_tag = (gobject.timeout_add
605
352
self.disable_initiator_tag = (gobject.timeout_add
606
353
(self.timeout_milliseconds(),
607
354
self.disable))
355
self.enabled = True
608
356
# Also start a new checker *right now*.
609
357
self.start_checker()
610
358
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
611
384
def checker_callback(self, pid, condition, command):
612
385
"""The checker has completed, so take appropriate actions."""
613
386
self.checker_callback_tag = None
614
387
self.checker = None
615
388
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
logger.info(u"Checker for %(name)s succeeded",
619
392
vars(self))
620
393
self.checked_ok()
621
394
else:
622
logger.info("Checker for %(name)s failed",
395
logger.info(u"Checker for %(name)s failed",
623
396
vars(self))
624
397
else:
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
398
logger.warning(u"Checker for %(name)s crashed?",
627
399
vars(self))
628
400
629
401
def checked_ok(self):
630
"""Assert that the client has been seen, alive and well."""
402
"""Bump up the timeout for this client.
403
404
This should only be called when the client has been seen,
405
alive and well.
406
"""
631
407
self.last_checked_ok = datetime.datetime.utcnow()
632
self.last_checker_status = 0
633
self.bump_timeout()
634
635
def bump_timeout(self, timeout=None):
636
"""Bump up the timeout for this client."""
637
if timeout is None:
638
timeout = self.timeout
639
if self.disable_initiator_tag is not None:
640
gobject.source_remove(self.disable_initiator_tag)
641
if getattr(self, "enabled", False):
642
self.disable_initiator_tag = (gobject.timeout_add
643
(timedelta_to_milliseconds
644
(timeout), self.disable))
645
self.expires = datetime.datetime.utcnow() + timeout
646
647
def need_approval(self):
648
self.last_approval_request = 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))
649
412
650
413
def start_checker(self):
651
414
"""Start a new checker subprocess if one is not running.
664
427
# If a checker exists, make sure it is not a zombie
665
428
try:
666
429
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
667
except (AttributeError, OSError) as error:
430
except (AttributeError, OSError), error:
668
431
if (isinstance(error, OSError)
669
432
and error.errno != errno.ECHILD):
670
433
raise error
671
434
else:
672
435
if pid:
673
logger.warning("Checker was a zombie")
436
logger.warning(u"Checker was a zombie")
674
437
gobject.source_remove(self.checker_callback_tag)
675
438
self.checker_callback(pid, status,
676
439
self.current_checker_command)
681
444
command = self.checker_command % self.host
682
445
except TypeError:
683
446
# Escape attributes for the shell
684
escaped_attrs = dict(
685
(attr,
686
re.escape(unicode(str(getattr(self, attr, "")),
687
errors=
688
'replace')))
689
for attr in
690
self.runtime_expansions)
691
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())
692
453
try:
693
454
command = self.checker_command % escaped_attrs
694
except TypeError as error:
695
logger.error('Could not format string "%s":'
696
' %s', self.checker_command, error)
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
u' %s', self.checker_command, error)
697
458
return True # Try again later
698
459
self.current_checker_command = command
699
460
try:
700
logger.info("Starting checker %r for %s",
461
logger.info(u"Starting checker %r for %s",
701
462
command, self.name)
702
463
# We don't need to redirect stdout and stderr, since
703
464
# in normal mode, that is already done by daemon(),
705
466
# always replaced by /dev/null.)
706
467
self.checker = subprocess.Popen(command,
707
468
close_fds=True,
708
shell=True, cwd="/")
469
shell=True, cwd=u"/")
709
470
self.checker_callback_tag = (gobject.child_watch_add
710
471
(self.checker.pid,
711
472
self.checker_callback,
716
477
if pid:
717
478
gobject.source_remove(self.checker_callback_tag)
718
479
self.checker_callback(pid, status, command)
719
except OSError as error:
720
logger.error("Failed to start subprocess: %s",
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
721
482
error)
722
483
# Re-run this periodically if run by gobject.timeout_add
723
484
return True
727
488
if self.checker_callback_tag:
728
489
gobject.source_remove(self.checker_callback_tag)
729
490
self.checker_callback_tag = None
730
if getattr(self, "checker", None) is None:
491
if getattr(self, u"checker", None) is None:
731
492
return
732
logger.debug("Stopping checker for %(name)s", vars(self))
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
733
494
try:
734
495
os.kill(self.checker.pid, signal.SIGTERM)
735
496
#time.sleep(0.5)
736
497
#if self.checker.poll() is None:
737
498
# os.kill(self.checker.pid, signal.SIGKILL)
738
except OSError as error:
499
except OSError, error:
739
500
if error.errno != errno.ESRCH: # No such process
740
501
raise
741
502
self.checker = None
742
503
743
744
def dbus_service_property(dbus_interface, signature="v",
745
access="readwrite", byte_arrays=False):
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
746
506
"""Decorators for marking methods of a DBusObjectWithProperties to
747
507
become properties on the D-Bus.
748
508
755
515
"""
756
516
# Encoding deeply encoded byte arrays is not supported yet by the
757
517
# "Set" method, so we fail early here:
758
if byte_arrays and signature != "ay":
759
raise ValueError("Byte arrays not supported for non-'ay'"
760
" signature %r" % signature)
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
761
521
def decorator(func):
762
522
func._dbus_is_property = True
763
523
func._dbus_interface = dbus_interface
764
524
func._dbus_signature = signature
765
525
func._dbus_access = access
766
526
func._dbus_name = func.__name__
767
if func._dbus_name.endswith("_dbus_property"):
527
if func._dbus_name.endswith(u"_dbus_property"):
768
528
func._dbus_name = func._dbus_name[:-14]
769
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
770
530
return func
771
531
return decorator
772
532
792
552
793
553
class DBusObjectWithProperties(dbus.service.Object):
794
554
"""A D-Bus object with properties.
795
555
796
556
Classes inheriting from this can use the dbus_service_property
797
557
decorator to expose methods as D-Bus properties. It exposes the
798
558
standard Get(), Set(), and GetAll() methods on the D-Bus.
800
560
801
561
@staticmethod
802
562
def _is_dbus_property(obj):
803
return getattr(obj, "_dbus_is_property", False)
563
return getattr(obj, u"_dbus_is_property", False)
804
564
805
565
def _get_all_dbus_properties(self):
806
566
"""Returns a generator of (name, attribute) pairs
807
567
"""
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
809
for cls in self.__class__.__mro__
568
return ((prop._dbus_name, prop)
810
569
for name, prop in
811
inspect.getmembers(cls, self._is_dbus_property))
570
inspect.getmembers(self, self._is_dbus_property))
812
571
813
572
def _get_dbus_property(self, interface_name, property_name):
814
573
"""Returns a bound method if one exists which is a D-Bus
815
574
property with the specified name and interface.
816
575
"""
817
for cls in self.__class__.__mro__:
818
for name, value in (inspect.getmembers
819
(cls, self._is_dbus_property)):
820
if (value._dbus_name == property_name
821
and value._dbus_interface == interface_name):
822
return value.__get__(self)
823
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
824
586
# No such property
825
raise DBusPropertyNotFound(self.dbus_object_path + ":"
826
+ interface_name + "."
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
827
589
+ property_name)
828
590
829
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
830
out_signature="v")
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
831
593
def Get(self, interface_name, property_name):
832
594
"""Standard D-Bus property Get() method, see D-Bus standard.
833
595
"""
834
596
prop = self._get_dbus_property(interface_name, property_name)
835
if prop._dbus_access == "write":
597
if prop._dbus_access == u"write":
836
598
raise DBusPropertyAccessException(property_name)
837
599
value = prop()
838
if not hasattr(value, "variant_level"):
600
if not hasattr(value, u"variant_level"):
839
601
return value
840
602
return type(value)(value, variant_level=value.variant_level+1)
841
603
842
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
843
605
def Set(self, interface_name, property_name, value):
844
606
"""Standard D-Bus property Set() method, see D-Bus standard.
845
607
"""
846
608
prop = self._get_dbus_property(interface_name, property_name)
847
if prop._dbus_access == "read":
609
if prop._dbus_access == u"read":
848
610
raise DBusPropertyAccessException(property_name)
849
if prop._dbus_get_args_options["byte_arrays"]:
611
if prop._dbus_get_args_options[u"byte_arrays"]:
850
612
# The byte_arrays option is not supported yet on
851
613
# signatures other than "ay".
852
if prop._dbus_signature != "ay":
614
if prop._dbus_signature != u"ay":
853
615
raise ValueError
854
value = dbus.ByteArray(b''.join(chr(byte)
855
for byte in value))
616
value = dbus.ByteArray(''.join(unichr(byte)
617
for byte in value))
856
618
prop(value)
857
619
858
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
859
out_signature="a{sv}")
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
860
622
def GetAll(self, interface_name):
861
623
"""Standard D-Bus property GetAll() method, see D-Bus
862
624
standard.
863
625
864
626
Note: Will not include properties with access="write".
865
627
"""
866
properties = {}
628
all = {}
867
629
for name, prop in self._get_all_dbus_properties():
868
630
if (interface_name
869
631
and interface_name != prop._dbus_interface):
870
632
# Interface non-empty but did not match
871
633
continue
872
634
# Ignore write-only properties
873
if prop._dbus_access == "write":
635
if prop._dbus_access == u"write":
874
636
continue
875
637
value = prop()
876
if not hasattr(value, "variant_level"):
877
properties[name] = value
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
878
640
continue
879
properties[name] = type(value)(value, variant_level=
880
value.variant_level+1)
881
return dbus.Dictionary(properties, signature="sv")
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
882
644
883
645
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
884
out_signature="s",
646
out_signature=u"s",
885
647
path_keyword='object_path',
886
648
connection_keyword='connection')
887
649
def Introspect(self, object_path, connection):
892
654
try:
893
655
document = xml.dom.minidom.parseString(xmlstring)
894
656
def make_tag(document, name, prop):
895
e = document.createElement("property")
896
e.setAttribute("name", name)
897
e.setAttribute("type", prop._dbus_signature)
898
e.setAttribute("access", prop._dbus_access)
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)
899
661
return e
900
for if_tag in document.getElementsByTagName("interface"):
662
for if_tag in document.getElementsByTagName(u"interface"):
901
663
for tag in (make_tag(document, name, prop)
902
664
for name, prop
903
665
in self._get_all_dbus_properties()
904
666
if prop._dbus_interface
905
== if_tag.getAttribute("name")):
667
== if_tag.getAttribute(u"name")):
906
668
if_tag.appendChild(tag)
907
669
# Add the names to the return values for the
908
670
# "org.freedesktop.DBus.Properties" methods
909
if (if_tag.getAttribute("name")
910
== "org.freedesktop.DBus.Properties"):
911
for cn in if_tag.getElementsByTagName("method"):
912
if cn.getAttribute("name") == "Get":
913
for arg in cn.getElementsByTagName("arg"):
914
if (arg.getAttribute("direction")
915
== "out"):
916
arg.setAttribute("name", "value")
917
elif cn.getAttribute("name") == "GetAll":
918
for arg in cn.getElementsByTagName("arg"):
919
if (arg.getAttribute("direction")
920
== "out"):
921
arg.setAttribute("name", "props")
922
xmlstring = document.toxml("utf-8")
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")
923
685
document.unlink()
924
686
except (AttributeError, xml.dom.DOMException,
925
xml.parsers.expat.ExpatError) as error:
926
logger.error("Failed to override Introspection method",
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
927
689
error)
928
690
return xmlstring
929
691
930
692
931
def datetime_to_dbus (dt, variant_level=0):
932
"""Convert a UTC datetime.datetime() to a D-Bus type."""
933
if dt is None:
934
return dbus.String("", variant_level = variant_level)
935
return dbus.String(dt.isoformat(),
936
variant_level=variant_level)
937
938
939
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
940
.__metaclass__):
941
"""Applied to an empty subclass of a D-Bus object, this metaclass
942
will add additional D-Bus attributes matching a certain pattern.
943
"""
944
def __new__(mcs, name, bases, attr):
945
# Go through all the base classes which could have D-Bus
946
# methods, signals, or properties in them
947
for base in (b for b in bases
948
if issubclass(b, dbus.service.Object)):
949
# Go though all attributes of the base class
950
for attrname, attribute in inspect.getmembers(base):
951
# Ignore non-D-Bus attributes, and D-Bus attributes
952
# with the wrong interface name
953
if (not hasattr(attribute, "_dbus_interface")
954
or not attribute._dbus_interface
955
.startswith("se.recompile.Mandos")):
956
continue
957
# Create an alternate D-Bus interface name based on
958
# the current name
959
alt_interface = (attribute._dbus_interface
960
.replace("se.recompile.Mandos",
961
"se.bsnet.fukt.Mandos"))
962
# Is this a D-Bus signal?
963
if getattr(attribute, "_dbus_is_signal", False):
964
# Extract the original non-method function by
965
# black magic
966
nonmethod_func = (dict(
967
zip(attribute.func_code.co_freevars,
968
attribute.__closure__))["func"]
969
.cell_contents)
970
# Create a new, but exactly alike, function
971
# object, and decorate it to be a new D-Bus signal
972
# with the alternate D-Bus interface name
973
new_function = (dbus.service.signal
974
(alt_interface,
975
attribute._dbus_signature)
976
(types.FunctionType(
977
nonmethod_func.func_code,
978
nonmethod_func.func_globals,
979
nonmethod_func.func_name,
980
nonmethod_func.func_defaults,
981
nonmethod_func.func_closure)))
982
# Define a creator of a function to call both the
983
# old and new functions, so both the old and new
984
# signals gets sent when the function is called
985
def fixscope(func1, func2):
986
"""This function is a scope container to pass
987
func1 and func2 to the "call_both" function
988
outside of its arguments"""
989
def call_both(*args, **kwargs):
990
"""This function will emit two D-Bus
991
signals by calling func1 and func2"""
992
func1(*args, **kwargs)
993
func2(*args, **kwargs)
994
return call_both
995
# Create the "call_both" function and add it to
996
# the class
997
attr[attrname] = fixscope(attribute,
998
new_function)
999
# Is this a D-Bus method?
1000
elif getattr(attribute, "_dbus_is_method", False):
1001
# Create a new, but exactly alike, function
1002
# object. Decorate it to be a new D-Bus method
1003
# with the alternate D-Bus interface name. Add it
1004
# to the class.
1005
attr[attrname] = (dbus.service.method
1006
(alt_interface,
1007
attribute._dbus_in_signature,
1008
attribute._dbus_out_signature)
1009
(types.FunctionType
1010
(attribute.func_code,
1011
attribute.func_globals,
1012
attribute.func_name,
1013
attribute.func_defaults,
1014
attribute.func_closure)))
1015
# Is this a D-Bus property?
1016
elif getattr(attribute, "_dbus_is_property", False):
1017
# Create a new, but exactly alike, function
1018
# object, and decorate it to be a new D-Bus
1019
# property with the alternate D-Bus interface
1020
# name. Add it to the class.
1021
attr[attrname] = (dbus_service_property
1022
(alt_interface,
1023
attribute._dbus_signature,
1024
attribute._dbus_access,
1025
attribute
1026
._dbus_get_args_options
1027
["byte_arrays"])
1028
(types.FunctionType
1029
(attribute.func_code,
1030
attribute.func_globals,
1031
attribute.func_name,
1032
attribute.func_defaults,
1033
attribute.func_closure)))
1034
return type.__new__(mcs, name, bases, attr)
1035
1036
1037
693
class ClientDBus(Client, DBusObjectWithProperties):
1038
694
"""A Client class using D-Bus
1039
695
1041
697
dbus_object_path: dbus.ObjectPath
1042
698
bus: dbus.SystemBus()
1043
699
"""
1044
1045
runtime_expansions = (Client.runtime_expansions
1046
+ ("dbus_object_path",))
1047
1048
700
# dbus.service.Object doesn't use super(), so we can't either.
1049
701
1050
702
def __init__(self, bus = None, *args, **kwargs):
1052
704
Client.__init__(self, *args, **kwargs)
1053
705
# Only now, when this client is initialized, can it show up on
1054
706
# the D-Bus
1055
client_object_name = unicode(self.name).translate(
1056
{ord("."): ord("_"),
1057
ord("-"): ord("_")})
1058
707
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
708
(u"/clients/"
709
+ self.name.replace(u".", u"_")))
1060
710
DBusObjectWithProperties.__init__(self, self.bus,
1061
711
self.dbus_object_path)
1062
1063
def notifychangeproperty(transform_func,
1064
dbus_name, type_func=lambda x: x,
1065
variant_level=1):
1066
""" Modify a variable so that it's a property which announces
1067
its changes to DBus.
1068
1069
transform_fun: Function that takes a value and a variant_level
1070
and transforms it to a D-Bus type.
1071
dbus_name: D-Bus name of the variable
1072
type_func: Function that transform the value before sending it
1073
to the D-Bus. Default: no transform
1074
variant_level: D-Bus variant level. Default: 1
1075
"""
1076
attrname = "_{0}".format(dbus_name)
1077
def setter(self, value):
1078
if hasattr(self, "dbus_object_path"):
1079
if (not hasattr(self, attrname) or
1080
type_func(getattr(self, attrname, None))
1081
!= type_func(value)):
1082
dbus_value = transform_func(type_func(value),
1083
variant_level
1084
=variant_level)
1085
self.PropertyChanged(dbus.String(dbus_name),
1086
dbus_value)
1087
setattr(self, attrname, value)
1088
1089
return property(lambda self: getattr(self, attrname), setter)
1090
1091
1092
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1093
approvals_pending = notifychangeproperty(dbus.Boolean,
1094
"ApprovalPending",
1095
type_func = bool)
1096
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1097
last_enabled = notifychangeproperty(datetime_to_dbus,
1098
"LastEnabled")
1099
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1100
type_func = lambda checker:
1101
checker is not None)
1102
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1103
"LastCheckedOK")
1104
last_checker_status = notifychangeproperty(dbus.Int16,
1105
"LastCheckerStatus")
1106
last_approval_request = notifychangeproperty(
1107
datetime_to_dbus, "LastApprovalRequest")
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1114
approval_duration = notifychangeproperty(
1115
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1117
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1121
extended_timeout = notifychangeproperty(
1122
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1130
del notifychangeproperty
712
713
@staticmethod
714
def _datetime_to_dbus(dt, variant_level=0):
715
"""Convert a UTC datetime.datetime() to a D-Bus type."""
716
return dbus.String(dt.isoformat(),
717
variant_level=variant_level)
718
719
def enable(self):
720
oldstate = getattr(self, u"enabled", False)
721
r = Client.enable(self)
722
if oldstate != self.enabled:
723
# Emit D-Bus signals
724
self.PropertyChanged(dbus.String(u"enabled"),
725
dbus.Boolean(True, variant_level=1))
726
self.PropertyChanged(
727
dbus.String(u"last_enabled"),
728
self._datetime_to_dbus(self.last_enabled,
729
variant_level=1))
730
return r
731
732
def disable(self, quiet = False):
733
oldstate = getattr(self, u"enabled", False)
734
r = Client.disable(self, quiet=quiet)
735
if not quiet and oldstate != self.enabled:
736
# Emit D-Bus signal
737
self.PropertyChanged(dbus.String(u"enabled"),
738
dbus.Boolean(False, variant_level=1))
739
return r
1131
740
1132
741
def __del__(self, *args, **kwargs):
1133
742
try:
1134
743
self.remove_from_connection()
1135
744
except LookupError:
1136
745
pass
1137
if hasattr(DBusObjectWithProperties, "__del__"):
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1138
747
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
748
Client.__del__(self, *args, **kwargs)
1140
749
1142
751
*args, **kwargs):
1143
752
self.checker_callback_tag = None
1144
753
self.checker = None
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"checker_running"),
756
dbus.Boolean(False, variant_level=1))
1145
757
if os.WIFEXITED(condition):
1146
758
exitstatus = os.WEXITSTATUS(condition)
1147
759
# Emit D-Bus signal
1157
769
return Client.checker_callback(self, pid, condition, command,
1158
770
*args, **kwargs)
1159
771
772
def checked_ok(self, *args, **kwargs):
773
r = Client.checked_ok(self, *args, **kwargs)
774
# Emit D-Bus signal
775
self.PropertyChanged(
776
dbus.String(u"last_checked_ok"),
777
(self._datetime_to_dbus(self.last_checked_ok,
778
variant_level=1)))
779
return r
780
1160
781
def start_checker(self, *args, **kwargs):
1161
782
old_checker = self.checker
1162
783
if self.checker is not None:
1169
790
and old_checker_pid != self.checker.pid):
1170
791
# Emit D-Bus signal
1171
792
self.CheckerStarted(self.current_checker_command)
793
self.PropertyChanged(
794
dbus.String(u"checker_running"),
795
dbus.Boolean(True, variant_level=1))
1172
796
return r
1173
797
798
def stop_checker(self, *args, **kwargs):
799
old_checker = getattr(self, u"checker", None)
800
r = Client.stop_checker(self, *args, **kwargs)
801
if (old_checker is not None
802
and getattr(self, u"checker", None) is None):
803
self.PropertyChanged(dbus.String(u"checker_running"),
804
dbus.Boolean(False, variant_level=1))
805
return r
806
1174
807
def _reset_approved(self):
1175
self.approved = None
808
self._approved = None
1176
809
return False
1177
810
1178
811
def approve(self, value=True):
1179
self.send_changedstate()
1180
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
812
self._approved = value
813
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
814
815
def approved_pending(self):
816
return self.approvals_pending > 0
817
1185
818
1186
819
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
820
_interface = u"se.bsnet.fukt.Mandos.Client"
1188
821
1189
822
## Signals
1190
823
1191
824
# CheckerCompleted - signal
1192
@dbus.service.signal(_interface, signature="nxs")
825
@dbus.service.signal(_interface, signature=u"nxs")
1193
826
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
827
"D-Bus signal"
1195
828
pass
1196
829
1197
830
# CheckerStarted - signal
1198
@dbus.service.signal(_interface, signature="s")
831
@dbus.service.signal(_interface, signature=u"s")
1199
832
def CheckerStarted(self, command):
1200
833
"D-Bus signal"
1201
834
pass
1202
835
1203
836
# PropertyChanged - signal
1204
@dbus.service.signal(_interface, signature="sv")
837
@dbus.service.signal(_interface, signature=u"sv")
1205
838
def PropertyChanged(self, property, value):
1206
839
"D-Bus signal"
1207
840
pass
1209
842
# GotSecret - signal
1210
843
@dbus.service.signal(_interface)
1211
844
def GotSecret(self):
1212
"""D-Bus signal
1213
Is sent after a successful transfer of secret from the Mandos
1214
server to mandos-client
1215
"""
845
"D-Bus signal"
1216
846
pass
1217
847
1218
848
# Rejected - signal
1219
@dbus.service.signal(_interface, signature="s")
849
@dbus.service.signal(_interface, signature=u"s")
1220
850
def Rejected(self, reason):
1221
851
"D-Bus signal"
1222
852
pass
1223
853
1224
854
# NeedApproval - signal
1225
@dbus.service.signal(_interface, signature="tb")
855
@dbus.service.signal(_interface, signature=u"db")
1226
856
def NeedApproval(self, timeout, default):
1227
857
"D-Bus signal"
1228
return self.need_approval()
858
pass
1229
859
1230
860
## Methods
1231
861
1232
862
# Approve - method
1233
@dbus.service.method(_interface, in_signature="b")
863
@dbus.service.method(_interface, in_signature=u"b")
1234
864
def Approve(self, value):
1235
865
self.approve(value)
1236
866
1237
867
# CheckedOK - method
1238
868
@dbus.service.method(_interface)
1239
869
def CheckedOK(self):
1240
self.checked_ok()
870
return self.checked_ok()
1241
871
1242
872
# Enable - method
1243
873
@dbus.service.method(_interface)
1264
894
1265
895
## Properties
1266
896
1267
# ApprovalPending - property
1268
@dbus_service_property(_interface, signature="b", access="read")
1269
def ApprovalPending_dbus_property(self):
1270
return dbus.Boolean(bool(self.approvals_pending))
1271
1272
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
1274
access="readwrite")
1275
def ApprovedByDefault_dbus_property(self, value=None):
1276
if value is None: # get
1277
return dbus.Boolean(self.approved_by_default)
1278
self.approved_by_default = bool(value)
1279
1280
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
1282
access="readwrite")
1283
def ApprovalDelay_dbus_property(self, value=None):
1284
if value is None: # get
1285
return dbus.UInt64(self.approval_delay_milliseconds())
1286
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1287
1288
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
1291
def ApprovalDuration_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
1295
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1296
1297
# Name - property
1298
@dbus_service_property(_interface, signature="s", access="read")
1299
def Name_dbus_property(self):
897
# approved_pending - property
898
@dbus_service_property(_interface, signature=u"b", access=u"read")
899
def approved_pending_dbus_property(self):
900
return dbus.Boolean(self.approved_pending())
901
902
# approved_by_default - property
903
@dbus_service_property(_interface, signature=u"b",
904
access=u"readwrite")
905
def approved_by_default_dbus_property(self):
906
return dbus.Boolean(self.approved_by_default)
907
908
# approved_delay - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def approved_delay_dbus_property(self):
912
return dbus.UInt64(self.approved_delay_milliseconds())
913
914
# approved_duration - property
915
@dbus_service_property(_interface, signature=u"t",
916
access=u"readwrite")
917
def approved_duration_dbus_property(self):
918
return dbus.UInt64(self._timedelta_to_milliseconds(
919
self.approved_duration))
920
921
# name - property
922
@dbus_service_property(_interface, signature=u"s", access=u"read")
923
def name_dbus_property(self):
1300
924
return dbus.String(self.name)
1301
925
1302
# Fingerprint - property
1303
@dbus_service_property(_interface, signature="s", access="read")
1304
def Fingerprint_dbus_property(self):
926
# fingerprint - property
927
@dbus_service_property(_interface, signature=u"s", access=u"read")
928
def fingerprint_dbus_property(self):
1305
929
return dbus.String(self.fingerprint)
1306
930
1307
# Host - property
1308
@dbus_service_property(_interface, signature="s",
1309
access="readwrite")
1310
def Host_dbus_property(self, value=None):
931
# host - property
932
@dbus_service_property(_interface, signature=u"s",
933
access=u"readwrite")
934
def host_dbus_property(self, value=None):
1311
935
if value is None: # get
1312
936
return dbus.String(self.host)
1313
self.host = unicode(value)
1314
1315
# Created - property
1316
@dbus_service_property(_interface, signature="s", access="read")
1317
def Created_dbus_property(self):
1318
return datetime_to_dbus(self.created)
1319
1320
# LastEnabled - property
1321
@dbus_service_property(_interface, signature="s", access="read")
1322
def LastEnabled_dbus_property(self):
1323
return datetime_to_dbus(self.last_enabled)
1324
1325
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
1327
access="readwrite")
1328
def Enabled_dbus_property(self, value=None):
937
self.host = value
938
# Emit D-Bus signal
939
self.PropertyChanged(dbus.String(u"host"),
940
dbus.String(value, variant_level=1))
941
942
# created - property
943
@dbus_service_property(_interface, signature=u"s", access=u"read")
944
def created_dbus_property(self):
945
return dbus.String(self._datetime_to_dbus(self.created))
946
947
# last_enabled - property
948
@dbus_service_property(_interface, signature=u"s", access=u"read")
949
def last_enabled_dbus_property(self):
950
if self.last_enabled is None:
951
return dbus.String(u"")
952
return dbus.String(self._datetime_to_dbus(self.last_enabled))
953
954
# enabled - property
955
@dbus_service_property(_interface, signature=u"b",
956
access=u"readwrite")
957
def enabled_dbus_property(self, value=None):
1329
958
if value is None: # get
1330
959
return dbus.Boolean(self.enabled)
1331
960
if value:
1333
962
else:
1334
963
self.disable()
1335
964
1336
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
1338
access="readwrite")
1339
def LastCheckedOK_dbus_property(self, value=None):
965
# last_checked_ok - property
966
@dbus_service_property(_interface, signature=u"s",
967
access=u"readwrite")
968
def last_checked_ok_dbus_property(self, value=None):
1340
969
if value is not None:
1341
970
self.checked_ok()
1342
971
return
1343
return datetime_to_dbus(self.last_checked_ok)
1344
1345
# LastCheckerStatus - property
1346
@dbus_service_property(_interface, signature="n",
1347
access="read")
1348
def LastCheckerStatus_dbus_property(self):
1349
return dbus.Int16(self.last_checker_status)
1350
1351
# Expires - property
1352
@dbus_service_property(_interface, signature="s", access="read")
1353
def Expires_dbus_property(self):
1354
return datetime_to_dbus(self.expires)
1355
1356
# LastApprovalRequest - property
1357
@dbus_service_property(_interface, signature="s", access="read")
1358
def LastApprovalRequest_dbus_property(self):
1359
return datetime_to_dbus(self.last_approval_request)
1360
1361
# Timeout - property
1362
@dbus_service_property(_interface, signature="t",
1363
access="readwrite")
1364
def Timeout_dbus_property(self, value=None):
972
if self.last_checked_ok is None:
973
return dbus.String(u"")
974
return dbus.String(self._datetime_to_dbus(self
975
.last_checked_ok))
976
977
# timeout - property
978
@dbus_service_property(_interface, signature=u"t",
979
access=u"readwrite")
980
def timeout_dbus_property(self, value=None):
1365
981
if value is None: # get
1366
982
return dbus.UInt64(self.timeout_milliseconds())
1367
983
self.timeout = datetime.timedelta(0, 0, 0, value)
984
# Emit D-Bus signal
985
self.PropertyChanged(dbus.String(u"timeout"),
986
dbus.UInt64(value, variant_level=1))
987
if getattr(self, u"disable_initiator_tag", None) is None:
988
return
1368
989
# Reschedule timeout
1369
if self.enabled:
1370
now = datetime.datetime.utcnow()
1371
time_to_die = timedelta_to_milliseconds(
1372
(self.last_checked_ok + self.timeout) - now)
1373
if time_to_die <= 0:
1374
# The timeout has passed
1375
self.disable()
1376
else:
1377
self.expires = (now +
1378
datetime.timedelta(milliseconds =
1379
time_to_die))
1380
if (getattr(self, "disable_initiator_tag", None)
1381
is None):
1382
return
1383
gobject.source_remove(self.disable_initiator_tag)
1384
self.disable_initiator_tag = (gobject.timeout_add
1385
(time_to_die,
1386
self.disable))
1387
1388
# ExtendedTimeout - property
1389
@dbus_service_property(_interface, signature="t",
1390
access="readwrite")
1391
def ExtendedTimeout_dbus_property(self, value=None):
1392
if value is None: # get
1393
return dbus.UInt64(self.extended_timeout_milliseconds())
1394
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1395
1396
# Interval - property
1397
@dbus_service_property(_interface, signature="t",
1398
access="readwrite")
1399
def Interval_dbus_property(self, value=None):
990
gobject.source_remove(self.disable_initiator_tag)
991
self.disable_initiator_tag = None
992
time_to_die = (self.
993
_timedelta_to_milliseconds((self
994
.last_checked_ok
995
+ self.timeout)
996
- datetime.datetime
997
.utcnow()))
998
if time_to_die <= 0:
999
# The timeout has passed
1000
self.disable()
1001
else:
1002
self.disable_initiator_tag = (gobject.timeout_add
1003
(time_to_die, self.disable))
1004
1005
# interval - property
1006
@dbus_service_property(_interface, signature=u"t",
1007
access=u"readwrite")
1008
def interval_dbus_property(self, value=None):
1400
1009
if value is None: # get
1401
1010
return dbus.UInt64(self.interval_milliseconds())
1402
1011
self.interval = datetime.timedelta(0, 0, 0, value)
1403
if getattr(self, "checker_initiator_tag", None) is None:
1012
# Emit D-Bus signal
1013
self.PropertyChanged(dbus.String(u"interval"),
1014
dbus.UInt64(value, variant_level=1))
1015
if getattr(self, u"checker_initiator_tag", None) is None:
1404
1016
return
1405
if self.enabled:
1406
# Reschedule checker run
1407
gobject.source_remove(self.checker_initiator_tag)
1408
self.checker_initiator_tag = (gobject.timeout_add
1409
(value, self.start_checker))
1410
self.start_checker() # Start one now, too
1411
1412
# Checker - property
1413
@dbus_service_property(_interface, signature="s",
1414
access="readwrite")
1415
def Checker_dbus_property(self, value=None):
1017
# Reschedule checker run
1018
gobject.source_remove(self.checker_initiator_tag)
1019
self.checker_initiator_tag = (gobject.timeout_add
1020
(value, self.start_checker))
1021
self.start_checker() # Start one now, too
1022
1023
# checker - property
1024
@dbus_service_property(_interface, signature=u"s",
1025
access=u"readwrite")
1026
def checker_dbus_property(self, value=None):
1416
1027
if value is None: # get
1417
1028
return dbus.String(self.checker_command)
1418
self.checker_command = unicode(value)
1029
self.checker_command = value
1030
# Emit D-Bus signal
1031
self.PropertyChanged(dbus.String(u"checker"),
1032
dbus.String(self.checker_command,
1033
variant_level=1))
1419
1034
1420
# CheckerRunning - property
1421
@dbus_service_property(_interface, signature="b",
1422
access="readwrite")
1423
def CheckerRunning_dbus_property(self, value=None):
1035
# checker_running - property
1036
@dbus_service_property(_interface, signature=u"b",
1037
access=u"readwrite")
1038
def checker_running_dbus_property(self, value=None):
1424
1039
if value is None: # get
1425
1040
return dbus.Boolean(self.checker is not None)
1426
1041
if value:
1428
1043
else:
1429
1044
self.stop_checker()
1430
1045
1431
# ObjectPath - property
1432
@dbus_service_property(_interface, signature="o", access="read")
1433
def ObjectPath_dbus_property(self):
1046
# object_path - property
1047
@dbus_service_property(_interface, signature=u"o", access=u"read")
1048
def object_path_dbus_property(self):
1434
1049
return self.dbus_object_path # is already a dbus.ObjectPath
1435
1050
1436
# Secret = property
1437
@dbus_service_property(_interface, signature="ay",
1438
access="write", byte_arrays=True)
1439
def Secret_dbus_property(self, value):
1051
# secret = property
1052
@dbus_service_property(_interface, signature=u"ay",
1053
access=u"write", byte_arrays=True)
1054
def secret_dbus_property(self, value):
1440
1055
self.secret = str(value)
1441
1056
1442
1057
del _interface
1448
1063
self._pipe.send(('init', fpr, address))
1449
1064
if not self._pipe.recv():
1450
1065
raise KeyError()
1451
1066
1452
1067
def __getattribute__(self, name):
1453
if name == '_pipe':
1068
if(name == '_pipe'):
1454
1069
return super(ProxyClient, self).__getattribute__(name)
1455
1070
self._pipe.send(('getattr', name))
1456
1071
data = self._pipe.recv()
1461
1076
self._pipe.send(('funcall', name, args, kwargs))
1462
1077
return self._pipe.recv()[1]
1463
1078
return func
1464
1079
1465
1080
def __setattr__(self, name, value):
1466
if name == '_pipe':
1081
if(name == '_pipe'):
1467
1082
return super(ProxyClient, self).__setattr__(name, value)
1468
1083
self._pipe.send(('setattr', name, value))
1469
1084
1470
1085
1471
class ClientDBusTransitional(ClientDBus):
1472
__metaclass__ = AlternateDBusNamesMetaclass
1473
1474
1475
1086
class ClientHandler(socketserver.BaseRequestHandler, object):
1476
1087
"""A class to handle client connections.
1477
1088
1480
1091
1481
1092
def handle(self):
1482
1093
with contextlib.closing(self.server.child_pipe) as child_pipe:
1483
logger.info("TCP connection from: %s",
1094
logger.info(u"TCP connection from: %s",
1484
1095
unicode(self.client_address))
1485
logger.debug("Pipe FD: %d",
1096
logger.debug(u"Pipe FD: %d",
1486
1097
self.server.child_pipe.fileno())
1487
1098
1488
1099
session = (gnutls.connection
1489
1100
.ClientSession(self.request,
1490
1101
gnutls.connection
1491
1102
.X509Credentials()))
1492
1103
1493
1104
# Note: gnutls.connection.X509Credentials is really a
1494
1105
# generic GnuTLS certificate credentials object so long as
1495
1106
# no X.509 keys are added to it. Therefore, we can use it
1496
1107
# here despite using OpenPGP certificates.
1497
1498
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1499
# "+AES-256-CBC", "+SHA1",
1500
# "+COMP-NULL", "+CTYPE-OPENPGP",
1501
# "+DHE-DSS"))
1108
1109
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1110
# u"+AES-256-CBC", u"+SHA1",
1111
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1112
# u"+DHE-DSS"))
1502
1113
# Use a fallback default, since this MUST be set.
1503
1114
priority = self.server.gnutls_priority
1504
1115
if priority is None:
1505
priority = "NORMAL"
1116
priority = u"NORMAL"
1506
1117
(gnutls.library.functions
1507
1118
.gnutls_priority_set_direct(session._c_object,
1508
1119
priority, None))
1509
1120
1510
1121
# Start communication using the Mandos protocol
1511
1122
# Get protocol number
1512
1123
line = self.request.makefile().readline()
1513
logger.debug("Protocol version: %r", line)
1124
logger.debug(u"Protocol version: %r", line)
1514
1125
try:
1515
1126
if int(line.strip().split()[0]) > 1:
1516
1127
raise RuntimeError
1517
except (ValueError, IndexError, RuntimeError) as error:
1518
logger.error("Unknown protocol version: %s", error)
1128
except (ValueError, IndexError, RuntimeError), error:
1129
logger.error(u"Unknown protocol version: %s", error)
1519
1130
return
1520
1131
1521
1132
# Start GnuTLS connection
1522
1133
try:
1523
1134
session.handshake()
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("Handshake failed: %s", error)
1135
except gnutls.errors.GNUTLSError, error:
1136
logger.warning(u"Handshake failed: %s", error)
1526
1137
# Do not run session.bye() here: the session is not
1527
1138
# established. Just abandon the request.
1528
1139
return
1529
logger.debug("Handshake succeeded")
1530
1140
logger.debug(u"Handshake succeeded")
1141
1531
1142
approval_required = False
1532
1143
try:
1533
1144
try:
1534
1145
fpr = self.fingerprint(self.peer_certificate
1535
1146
(session))
1536
except (TypeError,
1537
gnutls.errors.GNUTLSError) as error:
1538
logger.warning("Bad certificate: %s", error)
1147
except (TypeError, gnutls.errors.GNUTLSError), error:
1148
logger.warning(u"Bad certificate: %s", error)
1539
1149
return
1540
logger.debug("Fingerprint: %s", fpr)
1541
1150
logger.debug(u"Fingerprint: %s", fpr)
1151
1542
1152
try:
1543
1153
client = ProxyClient(child_pipe, fpr,
1544
1154
self.client_address)
1545
1155
except KeyError:
1546
1156
return
1547
1157
1548
if client.approval_delay:
1549
delay = client.approval_delay
1158
if client.approved_delay:
1159
delay = client.approved_delay
1550
1160
client.approvals_pending += 1
1551
1161
approval_required = True
1552
1162
1553
1163
while True:
1554
1164
if not client.enabled:
1555
logger.info("Client %s is disabled",
1165
logger.warning(u"Client %s is disabled",
1556
1166
client.name)
1557
1167
if self.server.use_dbus:
1558
1168
# Emit D-Bus signal
1559
client.Rejected("Disabled")
1169
client.Rejected("Disabled")
1560
1170
return
1561
1171
1562
if client.approved or not client.approval_delay:
1172
if client._approved or not client.approved_delay:
1563
1173
#We are approved or approval is disabled
1564
1174
break
1565
elif client.approved is None:
1566
logger.info("Client %s needs approval",
1175
elif client._approved is None:
1176
logger.info(u"Client %s need approval",
1567
1177
client.name)
1568
1178
if self.server.use_dbus:
1569
1179
# Emit D-Bus signal
1570
1180
client.NeedApproval(
1571
client.approval_delay_milliseconds(),
1181
client.approved_delay_milliseconds(),
1572
1182
client.approved_by_default)
1573
1183
else:
1574
logger.warning("Client %s was not approved",
1184
logger.warning(u"Client %s was not approved",
1575
1185
client.name)
1576
1186
if self.server.use_dbus:
1577
1187
# Emit D-Bus signal
1578
client.Rejected("Denied")
1188
client.Rejected("Disapproved")
1579
1189
return
1580
1190
1581
1191
#wait until timeout or approved
1192
#x = float(client._timedelta_to_milliseconds(delay))
1582
1193
time = datetime.datetime.now()
1583
1194
client.changedstate.acquire()
1584
(client.changedstate.wait
1585
(float(client.timedelta_to_milliseconds(delay)
1586
/ 1000)))
1195
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1587
1196
client.changedstate.release()
1588
1197
time2 = datetime.datetime.now()
1589
1198
if (time2 - time) >= delay:
1593
1202
client.name)
1594
1203
if self.server.use_dbus:
1595
1204
# Emit D-Bus signal
1596
client.Rejected("Approval timed out")
1205
client.Rejected("Time out")
1597
1206
return
1598
1207
else:
1599
1208
break
1602
1211
1603
1212
sent_size = 0
1604
1213
while sent_size < len(client.secret):
1605
try:
1606
sent = session.send(client.secret[sent_size:])
1607
except gnutls.errors.GNUTLSError as error:
1608
logger.warning("gnutls send failed")
1609
return
1610
logger.debug("Sent: %d, remaining: %d",
1214
# XXX handle session exception
1215
sent = session.send(client.secret[sent_size:])
1216
logger.debug(u"Sent: %d, remaining: %d",
1611
1217
sent, len(client.secret)
1612
1218
- (sent_size + sent))
1613
1219
sent_size += sent
1614
1615
logger.info("Sending secret to %s", client.name)
1616
# bump the timeout using extended_timeout
1617
client.bump_timeout(client.extended_timeout)
1220
1221
logger.info(u"Sending secret to %s", client.name)
1222
# bump the timeout as if seen
1223
client.checked_ok()
1618
1224
if self.server.use_dbus:
1619
1225
# Emit D-Bus signal
1620
1226
client.GotSecret()
1622
1228
finally:
1623
1229
if approval_required:
1624
1230
client.approvals_pending -= 1
1625
try:
1626
session.bye()
1627
except gnutls.errors.GNUTLSError as error:
1628
logger.warning("GnuTLS bye failed")
1231
session.bye()
1629
1232
1630
1233
@staticmethod
1631
1234
def peer_certificate(session):
1641
1244
.gnutls_certificate_get_peers
1642
1245
(session._c_object, ctypes.byref(list_size)))
1643
1246
if not bool(cert_list) and list_size.value != 0:
1644
raise gnutls.errors.GNUTLSError("error getting peer"
1645
" certificate")
1247
raise gnutls.errors.GNUTLSError(u"error getting peer"
1248
u" certificate")
1646
1249
if list_size.value == 0:
1647
1250
return None
1648
1251
cert = cert_list[0]
1674
1277
if crtverify.value != 0:
1675
1278
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1676
1279
raise (gnutls.errors.CertificateSecurityError
1677
("Verify failed"))
1280
(u"Verify failed"))
1678
1281
# New buffer for the fingerprint
1679
1282
buf = ctypes.create_string_buffer(20)
1680
1283
buf_len = ctypes.c_size_t()
1687
1290
# Convert the buffer to a Python bytestring
1688
1291
fpr = ctypes.string_at(buf, buf_len.value)
1689
1292
# Convert the bytestring to hexadecimal notation
1690
hex_fpr = binascii.hexlify(fpr).upper()
1293
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1691
1294
return hex_fpr
1692
1295
1693
1296
1696
1299
def sub_process_main(self, request, address):
1697
1300
try:
1698
1301
self.finish_request(request, address)
1699
except Exception:
1302
except:
1700
1303
self.handle_error(request, address)
1701
1304
self.close_request(request)
1702
1305
1703
1306
def process_request(self, request, address):
1704
1307
"""Start a new process to process the request."""
1705
proc = multiprocessing.Process(target = self.sub_process_main,
1706
args = (request,
1707
address))
1708
proc.start()
1709
return proc
1710
1308
multiprocessing.Process(target = self.sub_process_main,
1309
args = (request, address)).start()
1711
1310
1712
1311
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1713
1312
""" adds a pipe to the MixIn """
1717
1316
This function creates a new pipe in self.pipe
1718
1317
"""
1719
1318
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1720
1721
proc = MultiprocessingMixIn.process_request(self, request,
1722
client_address)
1319
1320
super(MultiprocessingMixInWithPipe,
1321
self).process_request(request, client_address)
1723
1322
self.child_pipe.close()
1724
self.add_pipe(parent_pipe, proc)
1725
1726
def add_pipe(self, parent_pipe, proc):
1323
self.add_pipe(parent_pipe)
1324
1325
def add_pipe(self, parent_pipe):
1727
1326
"""Dummy function; override as necessary"""
1728
raise NotImplementedError
1729
1327
pass
1730
1328
1731
1329
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1732
1330
socketserver.TCPServer, object):
1750
1348
bind to an address or port if they were not specified."""
1751
1349
if self.interface is not None:
1752
1350
if SO_BINDTODEVICE is None:
1753
logger.error("SO_BINDTODEVICE does not exist;"
1754
" cannot bind to interface %s",
1351
logger.error(u"SO_BINDTODEVICE does not exist;"
1352
u" cannot bind to interface %s",
1755
1353
self.interface)
1756
1354
else:
1757
1355
try:
1758
1356
self.socket.setsockopt(socket.SOL_SOCKET,
1759
1357
SO_BINDTODEVICE,
1760
1358
str(self.interface
1761
+ '\0'))
1762
except socket.error as error:
1359
+ u'\0'))
1360
except socket.error, error:
1763
1361
if error[0] == errno.EPERM:
1764
logger.error("No permission to"
1765
" bind to interface %s",
1362
logger.error(u"No permission to"
1363
u" bind to interface %s",
1766
1364
self.interface)
1767
1365
elif error[0] == errno.ENOPROTOOPT:
1768
logger.error("SO_BINDTODEVICE not available;"
1769
" cannot bind to interface %s",
1366
logger.error(u"SO_BINDTODEVICE not available;"
1367
u" cannot bind to interface %s",
1770
1368
self.interface)
1771
1369
else:
1772
1370
raise
1774
1372
if self.server_address[0] or self.server_address[1]:
1775
1373
if not self.server_address[0]:
1776
1374
if self.address_family == socket.AF_INET6:
1777
any_address = "::" # in6addr_any
1375
any_address = u"::" # in6addr_any
1778
1376
else:
1779
1377
any_address = socket.INADDR_ANY
1780
1378
self.server_address = (any_address,
1807
1405
self.enabled = False
1808
1406
self.clients = clients
1809
1407
if self.clients is None:
1810
self.clients = {}
1408
self.clients = set()
1811
1409
self.use_dbus = use_dbus
1812
1410
self.gnutls_priority = gnutls_priority
1813
1411
IPv6_TCPServer.__init__(self, server_address,
1817
1415
def server_activate(self):
1818
1416
if self.enabled:
1819
1417
return socketserver.TCPServer.server_activate(self)
1820
1821
1418
def enable(self):
1822
1419
self.enabled = True
1823
1824
def add_pipe(self, parent_pipe, proc):
1420
def add_pipe(self, parent_pipe):
1825
1421
# Call "handle_ipc" for both data and EOF events
1826
1422
gobject.io_add_watch(parent_pipe.fileno(),
1827
1423
gobject.IO_IN | gobject.IO_HUP,
1828
1424
functools.partial(self.handle_ipc,
1829
parent_pipe =
1830
parent_pipe,
1831
proc = proc))
1832
1425
parent_pipe = parent_pipe))
1426
1833
1427
def handle_ipc(self, source, condition, parent_pipe=None,
1834
proc = None, client_object=None):
1428
client_object=None):
1835
1429
condition_names = {
1836
gobject.IO_IN: "IN", # There is data to read.
1837
gobject.IO_OUT: "OUT", # Data can be written (without
1430
gobject.IO_IN: u"IN", # There is data to read.
1431
gobject.IO_OUT: u"OUT", # Data can be written (without
1838
1432
# blocking).
1839
gobject.IO_PRI: "PRI", # There is urgent data to read.
1840
gobject.IO_ERR: "ERR", # Error condition.
1841
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1433
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1434
gobject.IO_ERR: u"ERR", # Error condition.
1435
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1842
1436
# broken, usually for pipes and
1843
1437
# sockets).
1844
1438
}
1846
1440
for cond, name in
1847
1441
condition_names.iteritems()
1848
1442
if cond & condition)
1849
# error, or the other end of multiprocessing.Pipe has closed
1850
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1851
# Wait for other process to exit
1852
proc.join()
1443
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1444
conditions_string)
1445
1446
# error or the other end of multiprocessing.Pipe has closed
1447
if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
1853
1448
return False
1854
1449
1855
1450
# Read a request from the child
1856
1451
request = parent_pipe.recv()
1452
logger.debug(u"IPC request: %s", repr(request))
1857
1453
command = request[0]
1858
1454
1859
1455
if command == 'init':
1860
1456
fpr = request[1]
1861
1457
address = request[2]
1862
1458
1863
for c in self.clients.itervalues():
1459
for c in self.clients:
1864
1460
if c.fingerprint == fpr:
1865
1461
client = c
1866
1462
break
1867
1463
else:
1868
logger.info("Client not found for fingerprint: %s, ad"
1869
"dress: %s", fpr, address)
1464
logger.warning(u"Client not found for fingerprint: %s, ad"
1465
u"dress: %s", fpr, address)
1870
1466
if self.use_dbus:
1871
1467
# Emit D-Bus signal
1872
mandos_dbus_service.ClientNotFound(fpr,
1873
address[0])
1468
mandos_dbus_service.ClientNotFound(fpr, address)
1874
1469
parent_pipe.send(False)
1875
1470
return False
1876
1471
1877
1472
gobject.io_add_watch(parent_pipe.fileno(),
1878
1473
gobject.IO_IN | gobject.IO_HUP,
1879
1474
functools.partial(self.handle_ipc,
1880
parent_pipe =
1881
parent_pipe,
1882
proc = proc,
1883
client_object =
1884
client))
1475
parent_pipe = parent_pipe,
1476
client_object = client))
1885
1477
parent_pipe.send(True)
1886
# remove the old hook in favor of the new above hook on
1887
# same fileno
1478
# remove the old hook in favor of the new above hook on same fileno
1888
1479
return False
1889
1480
if command == 'funcall':
1890
1481
funcname = request[1]
1891
1482
args = request[2]
1892
1483
kwargs = request[3]
1893
1484
1894
parent_pipe.send(('data', getattr(client_object,
1895
funcname)(*args,
1896
**kwargs)))
1897
1485
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1486
1898
1487
if command == 'getattr':
1899
1488
attrname = request[1]
1900
1489
if callable(client_object.__getattribute__(attrname)):
1901
1490
parent_pipe.send(('function',))
1902
1491
else:
1903
parent_pipe.send(('data', client_object
1904
.__getattribute__(attrname)))
1905
1492
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1493
1906
1494
if command == 'setattr':
1907
1495
attrname = request[1]
1908
1496
value = request[2]
1909
1497
setattr(client_object, attrname, value)
1910
1498
1911
1499
return True
1912
1500
1913
1501
1914
1502
def string_to_delta(interval):
1915
1503
"""Parse a string and return a datetime.timedelta
1916
1504
1917
>>> string_to_delta('7d')
1505
>>> string_to_delta(u'7d')
1918
1506
datetime.timedelta(7)
1919
>>> string_to_delta('60s')
1507
>>> string_to_delta(u'60s')
1920
1508
datetime.timedelta(0, 60)
1921
>>> string_to_delta('60m')
1509
>>> string_to_delta(u'60m')
1922
1510
datetime.timedelta(0, 3600)
1923
>>> string_to_delta('24h')
1511
>>> string_to_delta(u'24h')
1924
1512
datetime.timedelta(1)
1925
>>> string_to_delta('1w')
1513
>>> string_to_delta(u'1w')
1926
1514
datetime.timedelta(7)
1927
>>> string_to_delta('5m 30s')
1515
>>> string_to_delta(u'5m 30s')
1928
1516
datetime.timedelta(0, 330)
1929
1517
"""
1930
1518
timevalue = datetime.timedelta(0)
1932
1520
try:
1933
1521
suffix = unicode(s[-1])
1934
1522
value = int(s[:-1])
1935
if suffix == "d":
1523
if suffix == u"d":
1936
1524
delta = datetime.timedelta(value)
1937
elif suffix == "s":
1525
elif suffix == u"s":
1938
1526
delta = datetime.timedelta(0, value)
1939
elif suffix == "m":
1527
elif suffix == u"m":
1940
1528
delta = datetime.timedelta(0, 0, 0, 0, value)
1941
elif suffix == "h":
1529
elif suffix == u"h":
1942
1530
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1943
elif suffix == "w":
1531
elif suffix == u"w":
1944
1532
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1945
1533
else:
1946
raise ValueError("Unknown suffix %r" % suffix)
1947
except (ValueError, IndexError) as e:
1948
raise ValueError(*(e.args))
1534
raise ValueError(u"Unknown suffix %r" % suffix)
1535
except (ValueError, IndexError), e:
1536
raise ValueError(e.message)
1949
1537
timevalue += delta
1950
1538
return timevalue
1951
1539
1952
1540
1541
def if_nametoindex(interface):
1542
"""Call the C function if_nametoindex(), or equivalent
1543
1544
Note: This function cannot accept a unicode string."""
1545
global if_nametoindex
1546
try:
1547
if_nametoindex = (ctypes.cdll.LoadLibrary
1548
(ctypes.util.find_library(u"c"))
1549
.if_nametoindex)
1550
except (OSError, AttributeError):
1551
logger.warning(u"Doing if_nametoindex the hard way")
1552
def if_nametoindex(interface):
1553
"Get an interface index the hard way, i.e. using fcntl()"
1554
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1555
with contextlib.closing(socket.socket()) as s:
1556
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1557
struct.pack(str(u"16s16x"),
1558
interface))
1559
interface_index = struct.unpack(str(u"I"),
1560
ifreq[16:20])[0]
1561
return interface_index
1562
return if_nametoindex(interface)
1563
1564
1953
1565
def daemon(nochdir = False, noclose = False):
1954
1566
"""See daemon(3). Standard BSD Unix function.
1955
1567
1958
1570
sys.exit()
1959
1571
os.setsid()
1960
1572
if not nochdir:
1961
os.chdir("/")
1573
os.chdir(u"/")
1962
1574
if os.fork():
1963
1575
sys.exit()
1964
1576
if not noclose:
1966
1578
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1967
1579
if not stat.S_ISCHR(os.fstat(null).st_mode):
1968
1580
raise OSError(errno.ENODEV,
1969
"%s not a character device"
1581
u"%s not a character device"
1970
1582
% os.path.devnull)
1971
1583
os.dup2(null, sys.stdin.fileno())
1972
1584
os.dup2(null, sys.stdout.fileno())
1980
1592
##################################################################
1981
1593
# Parsing of options, both command line and config file
1982
1594
1983
parser = argparse.ArgumentParser()
1984
parser.add_argument("-v", "--version", action="version",
1985
version = "%%(prog)s %s" % version,
1986
help="show version number and exit")
1987
parser.add_argument("-i", "--interface", metavar="IF",
1988
help="Bind to interface IF")
1989
parser.add_argument("-a", "--address",
1990
help="Address to listen for requests on")
1991
parser.add_argument("-p", "--port", type=int,
1992
help="Port number to receive requests on")
1993
parser.add_argument("--check", action="store_true",
1994
help="Run self-test")
1995
parser.add_argument("--debug", action="store_true",
1996
help="Debug mode; run in foreground and log"
1997
" to terminal")
1998
parser.add_argument("--debuglevel", metavar="LEVEL",
1999
help="Debug level for stdout output")
2000
parser.add_argument("--priority", help="GnuTLS"
2001
" priority string (see GnuTLS documentation)")
2002
parser.add_argument("--servicename",
2003
metavar="NAME", help="Zeroconf service name")
2004
parser.add_argument("--configdir",
2005
default="/etc/mandos", metavar="DIR",
2006
help="Directory to search for configuration"
2007
" files")
2008
parser.add_argument("--no-dbus", action="store_false",
2009
dest="use_dbus", help="Do not provide D-Bus"
2010
" system bus interface")
2011
parser.add_argument("--no-ipv6", action="store_false",
2012
dest="use_ipv6", help="Do not use IPv6")
2013
parser.add_argument("--no-restore", action="store_false",
2014
dest="restore", help="Do not restore stored"
2015
" state")
2016
parser.add_argument("--statedir", metavar="DIR",
2017
help="Directory to save/restore state in")
2018
2019
options = parser.parse_args()
1595
parser = optparse.OptionParser(version = "%%prog %s" % version)
1596
parser.add_option("-i", u"--interface", type=u"string",
1597
metavar="IF", help=u"Bind to interface IF")
1598
parser.add_option("-a", u"--address", type=u"string",
1599
help=u"Address to listen for requests on")
1600
parser.add_option("-p", u"--port", type=u"int",
1601
help=u"Port number to receive requests on")
1602
parser.add_option("--check", action=u"store_true",
1603
help=u"Run self-test")
1604
parser.add_option("--debug", action=u"store_true",
1605
help=u"Debug mode; run in foreground and log to"
1606
u" terminal")
1607
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1608
u" priority string (see GnuTLS documentation)")
1609
parser.add_option("--servicename", type=u"string",
1610
metavar=u"NAME", help=u"Zeroconf service name")
1611
parser.add_option("--configdir", type=u"string",
1612
default=u"/etc/mandos", metavar=u"DIR",
1613
help=u"Directory to search for configuration"
1614
u" files")
1615
parser.add_option("--no-dbus", action=u"store_false",
1616
dest=u"use_dbus", help=u"Do not provide D-Bus"
1617
u" system bus interface")
1618
parser.add_option("--no-ipv6", action=u"store_false",
1619
dest=u"use_ipv6", help=u"Do not use IPv6")
1620
options = parser.parse_args()[0]
2020
1621
2021
1622
if options.check:
2022
1623
import doctest
2024
1625
sys.exit()
2025
1626
2026
1627
# Default values for config file for server-global settings
2027
server_defaults = { "interface": "",
2028
"address": "",
2029
"port": "",
2030
"debug": "False",
2031
"priority":
2032
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2033
"servicename": "Mandos",
2034
"use_dbus": "True",
2035
"use_ipv6": "True",
2036
"debuglevel": "",
2037
"restore": "True",
2038
"statedir": "/var/lib/mandos"
1628
server_defaults = { u"interface": u"",
1629
u"address": u"",
1630
u"port": u"",
1631
u"debug": u"False",
1632
u"priority":
1633
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1634
u"servicename": u"Mandos",
1635
u"use_dbus": u"True",
1636
u"use_ipv6": u"True",
2039
1637
}
2040
1638
2041
1639
# Parse config file for server-global settings
2042
1640
server_config = configparser.SafeConfigParser(server_defaults)
2043
1641
del server_defaults
2044
1642
server_config.read(os.path.join(options.configdir,
2045
"mandos.conf"))
1643
u"mandos.conf"))
2046
1644
# Convert the SafeConfigParser object to a dict
2047
1645
server_settings = server_config.defaults()
2048
1646
# Use the appropriate methods on the non-string config options
2049
for option in ("debug", "use_dbus", "use_ipv6"):
2050
server_settings[option] = server_config.getboolean("DEFAULT",
1647
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1648
server_settings[option] = server_config.getboolean(u"DEFAULT",
2051
1649
option)
2052
1650
if server_settings["port"]:
2053
server_settings["port"] = server_config.getint("DEFAULT",
2054
"port")
1651
server_settings["port"] = server_config.getint(u"DEFAULT",
1652
u"port")
2055
1653
del server_config
2056
1654
2057
1655
# Override the settings from the config file with command line
2058
1656
# options, if set.
2059
for option in ("interface", "address", "port", "debug",
2060
"priority", "servicename", "configdir",
2061
"use_dbus", "use_ipv6", "debuglevel", "restore",
2062
"statedir"):
1657
for option in (u"interface", u"address", u"port", u"debug",
1658
u"priority", u"servicename", u"configdir",
1659
u"use_dbus", u"use_ipv6"):
2063
1660
value = getattr(options, option)
2064
1661
if value is not None:
2065
1662
server_settings[option] = value
2073
1670
##################################################################
2074
1671
2075
1672
# For convenience
2076
debug = server_settings["debug"]
2077
debuglevel = server_settings["debuglevel"]
2078
use_dbus = server_settings["use_dbus"]
2079
use_ipv6 = server_settings["use_ipv6"]
2080
stored_state_path = os.path.join(server_settings["statedir"],
2081
stored_state_file)
2082
2083
if debug:
2084
initlogger(debug, logging.DEBUG)
2085
else:
2086
if not debuglevel:
2087
initlogger(debug)
2088
else:
2089
level = getattr(logging, debuglevel.upper())
2090
initlogger(debug, level)
2091
2092
if server_settings["servicename"] != "Mandos":
1673
debug = server_settings[u"debug"]
1674
use_dbus = server_settings[u"use_dbus"]
1675
use_ipv6 = server_settings[u"use_ipv6"]
1676
1677
if not debug:
1678
syslogger.setLevel(logging.WARNING)
1679
console.setLevel(logging.WARNING)
1680
1681
if server_settings[u"servicename"] != u"Mandos":
2093
1682
syslogger.setFormatter(logging.Formatter
2094
('Mandos (%s) [%%(process)d]:'
2095
' %%(levelname)s: %%(message)s'
2096
% server_settings["servicename"]))
1683
(u'Mandos (%s) [%%(process)d]:'
1684
u' %%(levelname)s: %%(message)s'
1685
% server_settings[u"servicename"]))
2097
1686
2098
1687
# Parse config file with clients
2099
client_config = configparser.SafeConfigParser(Client
2100
.client_defaults)
2101
client_config.read(os.path.join(server_settings["configdir"],
2102
"clients.conf"))
1688
client_defaults = { u"timeout": u"1h",
1689
u"interval": u"5m",
1690
u"checker": u"fping -q -- %%(host)s",
1691
u"host": u"",
1692
u"approved_delay": u"5m",
1693
u"approved_duration": u"1s",
1694
}
1695
client_config = configparser.SafeConfigParser(client_defaults)
1696
client_config.read(os.path.join(server_settings[u"configdir"],
1697
u"clients.conf"))
2103
1698
2104
1699
global mandos_dbus_service
2105
1700
mandos_dbus_service = None
2106
1701
2107
tcp_server = MandosServer((server_settings["address"],
2108
server_settings["port"]),
1702
tcp_server = MandosServer((server_settings[u"address"],
1703
server_settings[u"port"]),
2109
1704
ClientHandler,
2110
interface=(server_settings["interface"]
2111
or None),
1705
interface=server_settings[u"interface"],
2112
1706
use_ipv6=use_ipv6,
2113
1707
gnutls_priority=
2114
server_settings["priority"],
1708
server_settings[u"priority"],
2115
1709
use_dbus=use_dbus)
2116
if not debug:
2117
pidfilename = "/var/run/mandos.pid"
2118
try:
2119
pidfile = open(pidfilename, "w")
2120
except IOError:
2121
logger.error("Could not open file %r", pidfilename)
1710
pidfilename = u"/var/run/mandos.pid"
1711
try:
1712
pidfile = open(pidfilename, u"w")
1713
except IOError:
1714
logger.error(u"Could not open file %r", pidfilename)
2122
1715
2123
1716
try:
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
1717
uid = pwd.getpwnam(u"_mandos").pw_uid
1718
gid = pwd.getpwnam(u"_mandos").pw_gid
2126
1719
except KeyError:
2127
1720
try:
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
1721
uid = pwd.getpwnam(u"mandos").pw_uid
1722
gid = pwd.getpwnam(u"mandos").pw_gid
2130
1723
except KeyError:
2131
1724
try:
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
1725
uid = pwd.getpwnam(u"nobody").pw_uid
1726
gid = pwd.getpwnam(u"nobody").pw_gid
2134
1727
except KeyError:
2135
1728
uid = 65534
2136
1729
gid = 65534
2137
1730
try:
2138
1731
os.setgid(gid)
2139
1732
os.setuid(uid)
2140
except OSError as error:
1733
except OSError, error:
2141
1734
if error[0] != errno.EPERM:
2142
1735
raise error
2143
1736
1737
# Enable all possible GnuTLS debugging
2144
1738
if debug:
2145
# Enable all possible GnuTLS debugging
2146
2147
1739
# "Use a log level over 10 to enable all debugging options."
2148
1740
# - GnuTLS manual
2149
1741
gnutls.library.functions.gnutls_global_set_log_level(11)
2150
1742
2151
1743
@gnutls.library.types.gnutls_log_func
2152
1744
def debug_gnutls(level, string):
2153
logger.debug("GnuTLS: %s", string[:-1])
1745
logger.debug(u"GnuTLS: %s", string[:-1])
2154
1746
2155
1747
(gnutls.library.functions
2156
1748
.gnutls_global_set_log_function(debug_gnutls))
2157
2158
# Redirect stdin so all checkers get /dev/null
2159
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2160
os.dup2(null, sys.stdin.fileno())
2161
if null > 2:
2162
os.close(null)
2163
2164
# Need to fork before connecting to D-Bus
2165
if not debug:
2166
# Close all input and output, do double fork, etc.
2167
daemon()
2168
2169
gobject.threads_init()
2170
1749
2171
1750
global main_loop
2172
1751
# From the Avahi example code
2176
1755
# End of Avahi example code
2177
1756
if use_dbus:
2178
1757
try:
2179
bus_name = dbus.service.BusName("se.recompile.Mandos",
1758
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2180
1759
bus, do_not_queue=True)
2181
old_bus_name = (dbus.service.BusName
2182
("se.bsnet.fukt.Mandos", bus,
2183
do_not_queue=True))
2184
except dbus.exceptions.NameExistsException as e:
2185
logger.error(unicode(e) + ", disabling D-Bus")
1760
except dbus.exceptions.NameExistsException, e:
1761
logger.error(unicode(e) + u", disabling D-Bus")
2186
1762
use_dbus = False
2187
server_settings["use_dbus"] = False
1763
server_settings[u"use_dbus"] = False
2188
1764
tcp_server.use_dbus = False
2189
1765
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2190
service = AvahiServiceToSyslog(name =
2191
server_settings["servicename"],
2192
servicetype = "_mandos._tcp",
2193
protocol = protocol, bus = bus)
1766
service = AvahiService(name = server_settings[u"servicename"],
1767
servicetype = u"_mandos._tcp",
1768
protocol = protocol, bus = bus)
2194
1769
if server_settings["interface"]:
2195
1770
service.interface = (if_nametoindex
2196
(str(server_settings["interface"])))
2197
1771
(str(server_settings[u"interface"])))
1772
2198
1773
global multiprocessing_manager
2199
1774
multiprocessing_manager = multiprocessing.Manager()
2200
1775
2201
1776
client_class = Client
2202
1777
if use_dbus:
2203
client_class = functools.partial(ClientDBusTransitional,
2204
bus = bus)
2205
2206
client_settings = Client.config_parser(client_config)
2207
old_client_settings = {}
2208
clients_data = {}
2209
2210
# Get client data and settings from last running state.
2211
if server_settings["restore"]:
2212
try:
2213
with open(stored_state_path, "rb") as stored_state:
2214
clients_data, old_client_settings = (pickle.load
2215
(stored_state))
2216
os.remove(stored_state_path)
2217
except IOError as e:
2218
logger.warning("Could not load persistent state: {0}"
2219
.format(e))
2220
if e.errno != errno.ENOENT:
2221
raise
2222
except EOFError as e:
2223
logger.warning("Could not load persistent state: "
2224
"EOFError: {0}".format(e))
2225
2226
with PGPEngine() as pgp:
2227
for client_name, client in clients_data.iteritems():
2228
# Decide which value to use after restoring saved state.
2229
# We have three different values: Old config file,
2230
# new config file, and saved state.
2231
# New config value takes precedence if it differs from old
2232
# config value, otherwise use saved state.
2233
for name, value in client_settings[client_name].items():
2234
try:
2235
# For each value in new config, check if it
2236
# differs from the old config value (Except for
2237
# the "secret" attribute)
2238
if (name != "secret" and
2239
value != old_client_settings[client_name]
2240
[name]):
2241
client[name] = value
2242
except KeyError:
2243
pass
2244
2245
# Clients who has passed its expire date can still be
2246
# enabled if its last checker was successful. Clients
2247
# whose checker succeeded before we stored its state is
2248
# assumed to have successfully run all checkers during
2249
# downtime.
2250
if client["enabled"]:
2251
if datetime.datetime.utcnow() >= client["expires"]:
2252
if not client["last_checked_ok"]:
2253
logger.warning(
2254
"disabling client {0} - Client never "
2255
"performed a successful checker"
2256
.format(client_name))
2257
client["enabled"] = False
2258
elif client["last_checker_status"] != 0:
2259
logger.warning(
2260
"disabling client {0} - Client "
2261
"last checker failed with error code {1}"
2262
.format(client_name,
2263
client["last_checker_status"]))
2264
client["enabled"] = False
2265
else:
2266
client["expires"] = (datetime.datetime
2267
.utcnow()
2268
+ client["timeout"])
2269
logger.debug("Last checker succeeded,"
2270
" keeping {0} enabled"
2271
.format(client_name))
1778
client_class = functools.partial(ClientDBus, bus = bus)
1779
def client_config_items(config, section):
1780
special_settings = {
1781
"approved_by_default":
1782
lambda: config.getboolean(section,
1783
"approved_by_default"),
1784
}
1785
for name, value in config.items(section):
2272
1786
try:
2273
client["secret"] = (
2274
pgp.decrypt(client["encrypted_secret"],
2275
client_settings[client_name]
2276
["secret"]))
2277
except PGPError:
2278
# If decryption fails, we use secret from new settings
2279
logger.debug("Failed to decrypt {0} old secret"
2280
.format(client_name))
2281
client["secret"] = (
2282
client_settings[client_name]["secret"])
2283
2284
2285
# Add/remove clients based on new changes made to config
2286
for client_name in (set(old_client_settings)
2287
- set(client_settings)):
2288
del clients_data[client_name]
2289
for client_name in (set(client_settings)
2290
- set(old_client_settings)):
2291
clients_data[client_name] = client_settings[client_name]
2292
2293
# Create all client objects
2294
for client_name, client in clients_data.iteritems():
2295
tcp_server.clients[client_name] = client_class(
2296
name = client_name, settings = client)
2297
1787
yield (name, special_settings[name]())
1788
except KeyError:
1789
yield (name, value)
1790
1791
tcp_server.clients.update(set(
1792
client_class(name = section,
1793
config= dict(client_config_items(
1794
client_config, section)))
1795
for section in client_config.sections()))
2298
1796
if not tcp_server.clients:
2299
logger.warning("No clients defined")
2300
1797
logger.warning(u"No clients defined")
1798
1799
if debug:
1800
# Redirect stdin so all checkers get /dev/null
1801
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1802
os.dup2(null, sys.stdin.fileno())
1803
if null > 2:
1804
os.close(null)
1805
else:
1806
# No console logging
1807
logger.removeHandler(console)
1808
# Close all input and output, do double fork, etc.
1809
daemon()
1810
1811
try:
1812
with pidfile:
1813
pid = os.getpid()
1814
pidfile.write(str(pid) + "\n")
1815
del pidfile
1816
except IOError:
1817
logger.error(u"Could not write to file %r with PID %d",
1818
pidfilename, pid)
1819
except NameError:
1820
# "pidfile" was never created
1821
pass
1822
del pidfilename
1823
2301
1824
if not debug:
2302
try:
2303
with pidfile:
2304
pid = os.getpid()
2305
pidfile.write(str(pid) + "\n".encode("utf-8"))
2306
del pidfile
2307
except IOError:
2308
logger.error("Could not write to file %r with PID %d",
2309
pidfilename, pid)
2310
except NameError:
2311
# "pidfile" was never created
2312
pass
2313
del pidfilename
2314
1825
signal.signal(signal.SIGINT, signal.SIG_IGN)
2315
2316
1826
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2317
1827
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2318
1828
2320
1830
class MandosDBusService(dbus.service.Object):
2321
1831
"""A D-Bus proxy object"""
2322
1832
def __init__(self):
2323
dbus.service.Object.__init__(self, bus, "/")
2324
_interface = "se.recompile.Mandos"
1833
dbus.service.Object.__init__(self, bus, u"/")
1834
_interface = u"se.bsnet.fukt.Mandos"
2325
1835
2326
@dbus.service.signal(_interface, signature="o")
1836
@dbus.service.signal(_interface, signature=u"o")
2327
1837
def ClientAdded(self, objpath):
2328
1838
"D-Bus signal"
2329
1839
pass
2330
1840
2331
@dbus.service.signal(_interface, signature="ss")
1841
@dbus.service.signal(_interface, signature=u"ss")
2332
1842
def ClientNotFound(self, fingerprint, address):
2333
1843
"D-Bus signal"
2334
1844
pass
2335
1845
2336
@dbus.service.signal(_interface, signature="os")
1846
@dbus.service.signal(_interface, signature=u"os")
2337
1847
def ClientRemoved(self, objpath, name):
2338
1848
"D-Bus signal"
2339
1849
pass
2340
1850
2341
@dbus.service.method(_interface, out_signature="ao")
1851
@dbus.service.method(_interface, out_signature=u"ao")
2342
1852
def GetAllClients(self):
2343
1853
"D-Bus method"
2344
1854
return dbus.Array(c.dbus_object_path
2345
for c in
2346
tcp_server.clients.itervalues())
1855
for c in tcp_server.clients)
2347
1856
2348
1857
@dbus.service.method(_interface,
2349
out_signature="a{oa{sv}}")
1858
out_signature=u"a{oa{sv}}")
2350
1859
def GetAllClientsWithProperties(self):
2351
1860
"D-Bus method"
2352
1861
return dbus.Dictionary(
2353
((c.dbus_object_path, c.GetAll(""))
2354
for c in tcp_server.clients.itervalues()),
2355
signature="oa{sv}")
1862
((c.dbus_object_path, c.GetAll(u""))
1863
for c in tcp_server.clients),
1864
signature=u"oa{sv}")
2356
1865
2357
@dbus.service.method(_interface, in_signature="o")
1866
@dbus.service.method(_interface, in_signature=u"o")
2358
1867
def RemoveClient(self, object_path):
2359
1868
"D-Bus method"
2360
for c in tcp_server.clients.itervalues():
1869
for c in tcp_server.clients:
2361
1870
if c.dbus_object_path == object_path:
2362
del tcp_server.clients[c.name]
1871
tcp_server.clients.remove(c)
2363
1872
c.remove_from_connection()
2364
1873
# Don't signal anything except ClientRemoved
2365
1874
c.disable(quiet=True)
2370
1879
2371
1880
del _interface
2372
1881
2373
class MandosDBusServiceTransitional(MandosDBusService):
2374
__metaclass__ = AlternateDBusNamesMetaclass
2375
mandos_dbus_service = MandosDBusServiceTransitional()
1882
mandos_dbus_service = MandosDBusService()
2376
1883
2377
1884
def cleanup():
2378
1885
"Cleanup function; run on exit"
2379
1886
service.cleanup()
2380
1887
2381
multiprocessing.active_children()
2382
if not (tcp_server.clients or client_settings):
2383
return
2384
2385
# Store client before exiting. Secrets are encrypted with key
2386
# based on what config file has. If config file is
2387
# removed/edited, old secret will thus be unrecovable.
2388
clients = {}
2389
with PGPEngine() as pgp:
2390
for client in tcp_server.clients.itervalues():
2391
key = client_settings[client.name]["secret"]
2392
client.encrypted_secret = pgp.encrypt(client.secret,
2393
key)
2394
client_dict = {}
2395
2396
# A list of attributes that can not be pickled
2397
# + secret.
2398
exclude = set(("bus", "changedstate", "secret",
2399
"checker"))
2400
for name, typ in (inspect.getmembers
2401
(dbus.service.Object)):
2402
exclude.add(name)
2403
2404
client_dict["encrypted_secret"] = (client
2405
.encrypted_secret)
2406
for attr in client.client_structure:
2407
if attr not in exclude:
2408
client_dict[attr] = getattr(client, attr)
2409
2410
clients[client.name] = client_dict
2411
del client_settings[client.name]["secret"]
2412
2413
try:
2414
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2415
prefix="clients-",
2416
dir=os.path.dirname
2417
(stored_state_path))
2418
with os.fdopen(tempfd, "wb") as stored_state:
2419
pickle.dump((clients, client_settings), stored_state)
2420
os.rename(tempname, stored_state_path)
2421
except (IOError, OSError) as e:
2422
logger.warning("Could not save persistent state: {0}"
2423
.format(e))
2424
if not debug:
2425
try:
2426
os.remove(tempname)
2427
except NameError:
2428
pass
2429
if e.errno not in set((errno.ENOENT, errno.EACCES,
2430
errno.EEXIST)):
2431
raise e
2432
2433
# Delete all clients, and settings from config
2434
1888
while tcp_server.clients:
2435
name, client = tcp_server.clients.popitem()
1889
client = tcp_server.clients.pop()
2436
1890
if use_dbus:
2437
1891
client.remove_from_connection()
1892
client.disable_hook = None
2438
1893
# Don't signal anything except ClientRemoved
2439
1894
client.disable(quiet=True)
2440
1895
if use_dbus:
2441
1896
# Emit D-Bus signal
2442
mandos_dbus_service.ClientRemoved(client
2443
.dbus_object_path,
1897
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2444
1898
client.name)
2445
client_settings.clear()
2446
1899
2447
1900
atexit.register(cleanup)
2448
1901
2449
for client in tcp_server.clients.itervalues():
1902
for client in tcp_server.clients:
2450
1903
if use_dbus:
2451
1904
# Emit D-Bus signal
2452
1905
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2453
# Need to initiate checking of clients
2454
if client.enabled:
2455
client.init_checker()
1906
client.enable()
2456
1907
2457
1908
tcp_server.enable()
2458
1909
tcp_server.server_activate()
2460
1911
# Find out what port we got
2461
1912
service.port = tcp_server.socket.getsockname()[1]
2462
1913
if use_ipv6:
2463
logger.info("Now listening on address %r, port %d,"
1914
logger.info(u"Now listening on address %r, port %d,"
2464
1915
" flowinfo %d, scope_id %d"
2465
1916
% tcp_server.socket.getsockname())
2466
1917
else: # IPv4
2467
logger.info("Now listening on address %r, port %d"
1918
logger.info(u"Now listening on address %r, port %d"
2468
1919
% tcp_server.socket.getsockname())
2469
1920
2470
1921
#service.interface = tcp_server.socket.getsockname()[3]
2473
1924
# From the Avahi example code
2474
1925
try:
2475
1926
service.activate()
2476
except dbus.exceptions.DBusException as error:
2477
logger.critical("DBusException: %s", error)
1927
except dbus.exceptions.DBusException, error:
1928
logger.critical(u"DBusException: %s", error)
2478
1929
cleanup()
2479
1930
sys.exit(1)
2480
1931
# End of Avahi example code
2484
1935
(tcp_server.handle_request
2485
1936
(*args[2:], **kwargs) or True))
2486
1937
2487
logger.debug("Starting main loop")
1938
logger.debug(u"Starting main loop")
2488
1939
main_loop.run()
2489
except AvahiError as error:
2490
logger.critical("AvahiError: %s", error)
1940
except AvahiError, error:
1941
logger.critical(u"AvahiError: %s", error)
2491
1942
cleanup()
2492
1943
sys.exit(1)
2493
1944
except KeyboardInterrupt:
2494
1945
if debug:
2495
print("", file=sys.stderr)
2496
logger.debug("Server received KeyboardInterrupt")
2497
logger.debug("Server exiting")
1946
print >> sys.stderr
1947
logger.debug(u"Server received KeyboardInterrupt")
1948
logger.debug(u"Server exiting")
2498
1949
# Must run before the D-Bus bus name gets deregistered
2499
1950
cleanup()
2500
1951
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0