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- Committer: Teddy Hogeborn
- Date: 2009-10-18 16:09:05 UTC
- Revision ID: teddy@fukt.bsnet.se-20091018160905-ep07o5cwedsegz9x
* plugins.d/askpass-fifo.c: Do close(STDOUT_FILENO) before exiting to
check its return code. Use exit codes
from <sysexits.h>.
* plugins.d/splashy.c: Use exit codes from <sysexits.h> in the fork to
exec the "splashy_update" command.
check its return code. Use exit codes
from <sysexits.h>.
* plugins.d/splashy.c: Use exit codes from <sysexits.h> in the fork to
exec the "splashy_update" command.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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
56
55
import logging
57
56
import logging.handlers
58
57
import pwd
59
import contextlib
58
from contextlib import closing
60
59
import struct
61
60
import fcntl
62
61
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
62
69
63
import dbus
70
64
import dbus.service
75
69
import ctypes.util
76
70
import xml.dom.minidom
77
71
import inspect
78
import GnuPGInterface
79
72
80
73
try:
81
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
78
except ImportError:
86
79
SO_BINDTODEVICE = None
87
80
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
92
85
syslogger = (logging.handlers.SysLogHandler
93
86
(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(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
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
127
logger.setLevel(level)
128
129
130
class PGPError(Exception):
131
"""Exception if encryption/decryption fails"""
132
pass
133
134
135
class PGPEngine(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
146
def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
209
98
210
99
class AvahiError(Exception):
211
100
def __init__(self, value, *args, **kwargs):
227
116
Attributes:
228
117
interface: integer; avahi.IF_UNSPEC or an interface index.
229
118
Used to optionally bind to the specified interface.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
232
121
See <http://www.dns-sd.org/ServiceTypes.html>
233
122
port: integer; what port to announce
234
123
TXT: list of strings; TXT record for the service
243
132
"""
244
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
134
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
247
136
protocol = avahi.PROTO_UNSPEC, bus = None):
248
137
self.interface = interface
249
138
self.name = name
258
147
self.group = None # our entry group
259
148
self.server = None
260
149
self.bus = bus
261
self.entry_group_state_changed_match = None
262
150
def rename(self):
263
151
"""Derived from the Avahi example code"""
264
152
if self.rename_count >= self.max_renames:
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
267
155
self.rename_count)
268
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
271
logger.info("Changing Zeroconf service name to %r ...",
272
self.name)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
273
164
self.remove()
274
try:
275
self.add()
276
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
165
self.add()
280
166
self.rename_count += 1
281
167
def remove(self):
282
168
"""Derived from the Avahi example code"""
283
if self.entry_group_state_changed_match is not None:
284
self.entry_group_state_changed_match.remove()
285
self.entry_group_state_changed_match = None
286
169
if self.group is not None:
287
170
self.group.Reset()
288
171
def add(self):
289
172
"""Derived from the Avahi example code"""
290
self.remove()
291
173
if self.group is None:
292
174
self.group = dbus.Interface(
293
175
self.bus.get_object(avahi.DBUS_NAME,
294
176
self.server.EntryGroupNew()),
295
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
296
self.entry_group_state_changed_match = (
297
self.group.connect_to_signal(
298
'StateChanged', self.entry_group_state_changed))
299
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
300
182
self.name, self.type)
301
183
self.group.AddService(
302
184
self.interface,
309
191
self.group.Commit()
310
192
def entry_group_state_changed(self, state, error):
311
193
"""Derived from the Avahi example code"""
312
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
313
195
314
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
316
198
elif state == avahi.ENTRY_GROUP_COLLISION:
317
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
318
200
self.rename()
319
201
elif state == avahi.ENTRY_GROUP_FAILURE:
320
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
321
203
unicode(error))
322
raise AvahiGroupError("State changed: %s"
204
raise AvahiGroupError(u"State changed: %s"
323
205
% unicode(error))
324
206
def cleanup(self):
325
207
"""Derived from the Avahi example code"""
326
208
if self.group is not None:
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
209
self.group.Free()
332
210
self.group = None
333
self.remove()
334
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
335
212
"""Derived from the Avahi example code"""
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
346
if error is None:
347
logger.error(bad_states[state])
348
else:
349
logger.error(bad_states[state] + ": %r", error)
350
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
351
216
elif state == avahi.SERVER_RUNNING:
352
217
self.add()
353
else:
354
if error is None:
355
logger.debug("Unknown state: %r", state)
356
else:
357
logger.debug("Unknown state: %r: %r", state, error)
358
218
def activate(self):
359
219
"""Derived from the Avahi example code"""
360
220
if self.server is None:
361
221
self.server = dbus.Interface(
362
222
self.bus.get_object(avahi.DBUS_NAME,
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
365
224
avahi.DBUS_INTERFACE_SERVER)
366
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
367
226
self.server_state_changed)
368
227
self.server_state_changed(self.server.GetState())
369
228
370
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
378
return ret
379
229
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
386
230
class Client(object):
387
231
"""A representation of a client host served by this server.
388
232
389
233
Attributes:
390
approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
393
248
checker: subprocess.Popen(); a running checker process used
394
249
to see if the client lives.
395
250
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
399
256
runtime with vars(self) as dict, so that for
400
257
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
258
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
407
enabled: bool()
408
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
410
host: string; available for use by the checker command
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
419
name: string; from the config file, used in log messages and
420
D-Bus identifiers
421
secret: bytestring; sent verbatim (over TLS) to client
422
timeout: datetime.timedelta(); How long from last_checked_ok
423
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
428
259
"""
429
260
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
444
267
445
268
def timeout_milliseconds(self):
446
269
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
452
271
453
272
def interval_milliseconds(self):
454
273
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
274
return self._timedelta_to_milliseconds(self.interval)
456
275
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
459
460
@staticmethod
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
465
settings = {}
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
469
470
# Default copying each value from config to new dict
471
for setting, value in section.iteritems():
472
client[setting] = value
473
474
# Reformat values from string types to Python types
475
client["approved_by_default"] = config.getboolean(
476
client_name, "approved_by_default")
477
client["enabled"] = config.getboolean(client_name, "enabled")
478
479
client["fingerprint"] = (section["fingerprint"].upper()
480
.replace(" ", ""))
481
if "secret" in section:
482
client["secret"] = section["secret"].decode("base64")
483
elif "secfile" in section:
484
with open(os.path.expanduser(os.path.expandvars
485
(section["secfile"])),
486
"rb") as secfile:
487
client["secret"] = secfile.read()
488
else:
489
raise TypeError("No secret or secfile for section %s"
490
% section)
491
client["timeout"] = string_to_delta(section["timeout"])
492
client["extended_timeout"] = string_to_delta(
493
section["extended_timeout"])
494
client["interval"] = string_to_delta(section["interval"])
495
client["approval_delay"] = string_to_delta(
496
section["approval_delay"])
497
client["approval_duration"] = string_to_delta(
498
section["approval_duration"])
499
500
return settings
501
502
503
def __init__(self, config, name = None):
276
def __init__(self, name = None, disable_hook=None, config=None):
504
277
"""Note: the 'checker' key in 'config' sets the
505
278
'checker_command' attribute and *not* the 'checker'
506
279
attribute."""
507
280
self.name = name
508
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
509
284
# Uppercase and remove spaces from fingerprint for later
510
285
# comparison purposes with return value from the fingerprint()
511
286
# function
512
self.fingerprint = config["fingerprint"]
513
logger.debug(" Fingerprint: %s", self.fingerprint)
514
self.secret = config["secret"]
515
self.host = config["host"]
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
297
self.secret = secfile.read()
298
else:
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
516
302
self.created = datetime.datetime.utcnow()
517
self.enabled = config["enabled"]
518
self.last_approval_request = None
519
if self.enabled:
520
self.last_enabled = datetime.datetime.utcnow()
521
else:
522
self.last_enabled = None
303
self.enabled = False
304
self.last_enabled = None
523
305
self.last_checked_ok = None
524
self.last_checker_status = None
525
self.timeout = config["timeout"]
526
self.extended_timeout = config["extended_timeout"]
527
self.interval = config["interval"]
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
528
309
self.checker = None
529
310
self.checker_initiator_tag = None
530
311
self.disable_initiator_tag = None
531
if self.enabled:
532
self.expires = datetime.datetime.utcnow() + self.timeout
533
else:
534
self.expires = None
535
312
self.checker_callback_tag = None
536
self.checker_command = config["checker"]
313
self.checker_command = config[u"checker"]
537
314
self.current_checker_command = None
538
self.approved = None
539
self.approved_by_default = config["approved_by_default"]
540
self.approvals_pending = 0
541
self.approval_delay = config["approval_delay"]
542
self.approval_duration = config["approval_duration"]
543
self.changedstate = (multiprocessing_manager
544
.Condition(multiprocessing_manager
545
.Lock()))
546
self.client_structure = [attr for attr in
547
self.__dict__.iterkeys()
548
if not attr.startswith("_")]
549
self.client_structure.append("client_structure")
550
551
for name, t in inspect.getmembers(type(self),
552
lambda obj:
553
isinstance(obj,
554
property)):
555
if not name.startswith("_"):
556
self.client_structure.append(name)
557
558
# Send notice to process children that client state has changed
559
def send_changedstate(self):
560
with self.changedstate:
561
self.changedstate.notify_all()
315
self.last_connect = None
562
316
563
317
def enable(self):
564
318
"""Start this client's checker and timeout hooks"""
565
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
566
320
# Already enabled
567
321
return
568
self.send_changedstate()
569
self.expires = datetime.datetime.utcnow() + self.timeout
570
self.enabled = True
571
322
self.last_enabled = datetime.datetime.utcnow()
572
self.init_checker()
573
574
def disable(self, quiet=True):
575
"""Disable this client."""
576
if not getattr(self, "enabled", False):
577
return False
578
if not quiet:
579
self.send_changedstate()
580
if not quiet:
581
logger.info("Disabling client %s", self.name)
582
if getattr(self, "disable_initiator_tag", False):
583
gobject.source_remove(self.disable_initiator_tag)
584
self.disable_initiator_tag = None
585
self.expires = None
586
if getattr(self, "checker_initiator_tag", False):
587
gobject.source_remove(self.checker_initiator_tag)
588
self.checker_initiator_tag = None
589
self.stop_checker()
590
self.enabled = False
591
# Do not run this again if called by a gobject.timeout_add
592
return False
593
594
def __del__(self):
595
self.disable()
596
597
def init_checker(self):
598
323
# Schedule a new checker to be started an 'interval' from now,
599
324
# and every interval from then on.
600
325
self.checker_initiator_tag = (gobject.timeout_add
601
326
(self.interval_milliseconds(),
602
327
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
603
330
# Schedule a disable() when 'timeout' has passed
604
331
self.disable_initiator_tag = (gobject.timeout_add
605
332
(self.timeout_milliseconds(),
606
333
self.disable))
607
# Also start a new checker *right now*.
608
self.start_checker()
334
self.enabled = True
335
336
def disable(self):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
346
self.checker_initiator_tag = None
347
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
350
self.enabled = False
351
# Do not run this again if called by a gobject.timeout_add
352
return False
353
354
def __del__(self):
355
self.disable_hook = None
356
self.disable()
609
357
610
358
def checker_callback(self, pid, condition, command):
611
359
"""The checker has completed, so take appropriate actions."""
612
360
self.checker_callback_tag = None
613
361
self.checker = None
614
362
if os.WIFEXITED(condition):
615
self.last_checker_status = os.WEXITSTATUS(condition)
616
if self.last_checker_status == 0:
617
logger.info("Checker for %(name)s succeeded",
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
618
366
vars(self))
619
367
self.checked_ok()
620
368
else:
621
logger.info("Checker for %(name)s failed",
369
logger.info(u"Checker for %(name)s failed",
622
370
vars(self))
623
371
else:
624
self.last_checker_status = -1
625
logger.warning("Checker for %(name)s crashed?",
372
logger.warning(u"Checker for %(name)s crashed?",
626
373
vars(self))
627
374
628
def checked_ok(self, timeout=None):
375
def checked_ok(self):
629
376
"""Bump up the timeout for this client.
630
377
631
378
This should only be called when the client has been seen,
632
379
alive and well.
633
380
"""
634
if timeout is None:
635
timeout = self.timeout
636
381
self.last_checked_ok = datetime.datetime.utcnow()
637
if self.disable_initiator_tag is not None:
638
gobject.source_remove(self.disable_initiator_tag)
639
if getattr(self, "enabled", False):
640
self.disable_initiator_tag = (gobject.timeout_add
641
(timedelta_to_milliseconds
642
(timeout), self.disable))
643
self.expires = datetime.datetime.utcnow() + timeout
644
645
def need_approval(self):
646
self.last_approval_request = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
647
386
648
387
def start_checker(self):
649
388
"""Start a new checker subprocess if one is not running.
656
395
# client would inevitably timeout, since no checker would get
657
396
# a chance to run to completion. If we instead leave running
658
397
# checkers alone, the checker would have to take more time
659
# than 'timeout' for the client to be disabled, which is as it
660
# should be.
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
661
400
662
401
# If a checker exists, make sure it is not a zombie
663
402
try:
664
403
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
665
except (AttributeError, OSError) as error:
404
except (AttributeError, OSError), error:
666
405
if (isinstance(error, OSError)
667
406
and error.errno != errno.ECHILD):
668
407
raise error
669
408
else:
670
409
if pid:
671
logger.warning("Checker was a zombie")
410
logger.warning(u"Checker was a zombie")
672
411
gobject.source_remove(self.checker_callback_tag)
673
412
self.checker_callback(pid, status,
674
413
self.current_checker_command)
679
418
command = self.checker_command % self.host
680
419
except TypeError:
681
420
# Escape attributes for the shell
682
escaped_attrs = dict(
683
(attr,
684
re.escape(unicode(str(getattr(self, attr, "")),
685
errors=
686
'replace')))
687
for attr in
688
self.runtime_expansions)
689
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
690
427
try:
691
428
command = self.checker_command % escaped_attrs
692
except TypeError as error:
693
logger.error('Could not format string "%s":'
694
' %s', self.checker_command, error)
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
695
432
return True # Try again later
696
433
self.current_checker_command = command
697
434
try:
698
logger.info("Starting checker %r for %s",
435
logger.info(u"Starting checker %r for %s",
699
436
command, self.name)
700
437
# We don't need to redirect stdout and stderr, since
701
438
# in normal mode, that is already done by daemon(),
703
440
# always replaced by /dev/null.)
704
441
self.checker = subprocess.Popen(command,
705
442
close_fds=True,
706
shell=True, cwd="/")
443
shell=True, cwd=u"/")
707
444
self.checker_callback_tag = (gobject.child_watch_add
708
445
(self.checker.pid,
709
446
self.checker_callback,
714
451
if pid:
715
452
gobject.source_remove(self.checker_callback_tag)
716
453
self.checker_callback(pid, status, command)
717
except OSError as error:
718
logger.error("Failed to start subprocess: %s",
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
719
456
error)
720
457
# Re-run this periodically if run by gobject.timeout_add
721
458
return True
725
462
if self.checker_callback_tag:
726
463
gobject.source_remove(self.checker_callback_tag)
727
464
self.checker_callback_tag = None
728
if getattr(self, "checker", None) is None:
465
if getattr(self, u"checker", None) is None:
729
466
return
730
logger.debug("Stopping checker for %(name)s", vars(self))
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
731
468
try:
732
469
os.kill(self.checker.pid, signal.SIGTERM)
733
#time.sleep(0.5)
470
#os.sleep(0.5)
734
471
#if self.checker.poll() is None:
735
472
# os.kill(self.checker.pid, signal.SIGKILL)
736
except OSError as error:
473
except OSError, error:
737
474
if error.errno != errno.ESRCH: # No such process
738
475
raise
739
476
self.checker = None
740
741
742
def dbus_service_property(dbus_interface, signature="v",
743
access="readwrite", byte_arrays=False):
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
485
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
744
491
"""Decorators for marking methods of a DBusObjectWithProperties to
745
492
become properties on the D-Bus.
746
493
751
498
dbus.service.method, except there is only "signature", since the
752
499
type from Get() and the type sent to Set() is the same.
753
500
"""
754
# Encoding deeply encoded byte arrays is not supported yet by the
755
# "Set" method, so we fail early here:
756
if byte_arrays and signature != "ay":
757
raise ValueError("Byte arrays not supported for non-'ay'"
758
" signature %r" % signature)
759
501
def decorator(func):
760
502
func._dbus_is_property = True
761
503
func._dbus_interface = dbus_interface
762
504
func._dbus_signature = signature
763
505
func._dbus_access = access
764
506
func._dbus_name = func.__name__
765
if func._dbus_name.endswith("_dbus_property"):
507
if func._dbus_name.endswith(u"_dbus_property"):
766
508
func._dbus_name = func._dbus_name[:-14]
767
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
768
510
return func
769
511
return decorator
770
512
790
532
791
533
class DBusObjectWithProperties(dbus.service.Object):
792
534
"""A D-Bus object with properties.
793
535
794
536
Classes inheriting from this can use the dbus_service_property
795
537
decorator to expose methods as D-Bus properties. It exposes the
796
538
standard Get(), Set(), and GetAll() methods on the D-Bus.
798
540
799
541
@staticmethod
800
542
def _is_dbus_property(obj):
801
return getattr(obj, "_dbus_is_property", False)
543
return getattr(obj, u"_dbus_is_property", False)
802
544
803
545
def _get_all_dbus_properties(self):
804
546
"""Returns a generator of (name, attribute) pairs
805
547
"""
806
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
807
for cls in self.__class__.__mro__
548
return ((prop._dbus_name, prop)
808
549
for name, prop in
809
inspect.getmembers(cls, self._is_dbus_property))
550
inspect.getmembers(self, self._is_dbus_property))
810
551
811
552
def _get_dbus_property(self, interface_name, property_name):
812
553
"""Returns a bound method if one exists which is a D-Bus
813
554
property with the specified name and interface.
814
555
"""
815
for cls in self.__class__.__mro__:
816
for name, value in (inspect.getmembers
817
(cls, self._is_dbus_property)):
818
if (value._dbus_name == property_name
819
and value._dbus_interface == interface_name):
820
return value.__get__(self)
821
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
822
566
# No such property
823
raise DBusPropertyNotFound(self.dbus_object_path + ":"
824
+ interface_name + "."
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
825
569
+ property_name)
826
570
827
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
828
out_signature="v")
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
829
573
def Get(self, interface_name, property_name):
830
574
"""Standard D-Bus property Get() method, see D-Bus standard.
831
575
"""
832
576
prop = self._get_dbus_property(interface_name, property_name)
833
if prop._dbus_access == "write":
577
if prop._dbus_access == u"write":
834
578
raise DBusPropertyAccessException(property_name)
835
579
value = prop()
836
if not hasattr(value, "variant_level"):
580
if not hasattr(value, u"variant_level"):
837
581
return value
838
582
return type(value)(value, variant_level=value.variant_level+1)
839
583
840
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
841
585
def Set(self, interface_name, property_name, value):
842
586
"""Standard D-Bus property Set() method, see D-Bus standard.
843
587
"""
844
588
prop = self._get_dbus_property(interface_name, property_name)
845
if prop._dbus_access == "read":
589
if prop._dbus_access == u"read":
846
590
raise DBusPropertyAccessException(property_name)
847
if prop._dbus_get_args_options["byte_arrays"]:
848
# The byte_arrays option is not supported yet on
849
# signatures other than "ay".
850
if prop._dbus_signature != "ay":
851
raise ValueError
591
if prop._dbus_get_args_options[u"byte_arrays"]:
852
592
value = dbus.ByteArray(''.join(unichr(byte)
853
593
for byte in value))
854
594
prop(value)
855
595
856
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
857
out_signature="a{sv}")
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
858
598
def GetAll(self, interface_name):
859
599
"""Standard D-Bus property GetAll() method, see D-Bus
860
600
standard.
861
601
862
602
Note: Will not include properties with access="write".
863
603
"""
864
properties = {}
604
all = {}
865
605
for name, prop in self._get_all_dbus_properties():
866
606
if (interface_name
867
607
and interface_name != prop._dbus_interface):
868
608
# Interface non-empty but did not match
869
609
continue
870
610
# Ignore write-only properties
871
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
872
612
continue
873
613
value = prop()
874
if not hasattr(value, "variant_level"):
875
properties[name] = value
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
876
616
continue
877
properties[name] = type(value)(value, variant_level=
878
value.variant_level+1)
879
return dbus.Dictionary(properties, signature="sv")
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
880
620
881
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
882
out_signature="s",
622
out_signature=u"s",
883
623
path_keyword='object_path',
884
624
connection_keyword='connection')
885
625
def Introspect(self, object_path, connection):
890
630
try:
891
631
document = xml.dom.minidom.parseString(xmlstring)
892
632
def make_tag(document, name, prop):
893
e = document.createElement("property")
894
e.setAttribute("name", name)
895
e.setAttribute("type", prop._dbus_signature)
896
e.setAttribute("access", prop._dbus_access)
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
897
637
return e
898
for if_tag in document.getElementsByTagName("interface"):
638
for if_tag in document.getElementsByTagName(u"interface"):
899
639
for tag in (make_tag(document, name, prop)
900
640
for name, prop
901
641
in self._get_all_dbus_properties()
902
642
if prop._dbus_interface
903
== if_tag.getAttribute("name")):
643
== if_tag.getAttribute(u"name")):
904
644
if_tag.appendChild(tag)
905
645
# Add the names to the return values for the
906
646
# "org.freedesktop.DBus.Properties" methods
907
if (if_tag.getAttribute("name")
908
== "org.freedesktop.DBus.Properties"):
909
for cn in if_tag.getElementsByTagName("method"):
910
if cn.getAttribute("name") == "Get":
911
for arg in cn.getElementsByTagName("arg"):
912
if (arg.getAttribute("direction")
913
== "out"):
914
arg.setAttribute("name", "value")
915
elif cn.getAttribute("name") == "GetAll":
916
for arg in cn.getElementsByTagName("arg"):
917
if (arg.getAttribute("direction")
918
== "out"):
919
arg.setAttribute("name", "props")
920
xmlstring = document.toxml("utf-8")
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
921
661
document.unlink()
922
662
except (AttributeError, xml.dom.DOMException,
923
xml.parsers.expat.ExpatError) as error:
924
logger.error("Failed to override Introspection method",
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
925
665
error)
926
666
return xmlstring
927
667
928
668
929
def datetime_to_dbus (dt, variant_level=0):
930
"""Convert a UTC datetime.datetime() to a D-Bus type."""
931
if dt is None:
932
return dbus.String("", variant_level = variant_level)
933
return dbus.String(dt.isoformat(),
934
variant_level=variant_level)
935
936
937
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
938
.__metaclass__):
939
"""Applied to an empty subclass of a D-Bus object, this metaclass
940
will add additional D-Bus attributes matching a certain pattern.
941
"""
942
def __new__(mcs, name, bases, attr):
943
# Go through all the base classes which could have D-Bus
944
# methods, signals, or properties in them
945
for base in (b for b in bases
946
if issubclass(b, dbus.service.Object)):
947
# Go though all attributes of the base class
948
for attrname, attribute in inspect.getmembers(base):
949
# Ignore non-D-Bus attributes, and D-Bus attributes
950
# with the wrong interface name
951
if (not hasattr(attribute, "_dbus_interface")
952
or not attribute._dbus_interface
953
.startswith("se.recompile.Mandos")):
954
continue
955
# Create an alternate D-Bus interface name based on
956
# the current name
957
alt_interface = (attribute._dbus_interface
958
.replace("se.recompile.Mandos",
959
"se.bsnet.fukt.Mandos"))
960
# Is this a D-Bus signal?
961
if getattr(attribute, "_dbus_is_signal", False):
962
# Extract the original non-method function by
963
# black magic
964
nonmethod_func = (dict(
965
zip(attribute.func_code.co_freevars,
966
attribute.__closure__))["func"]
967
.cell_contents)
968
# Create a new, but exactly alike, function
969
# object, and decorate it to be a new D-Bus signal
970
# with the alternate D-Bus interface name
971
new_function = (dbus.service.signal
972
(alt_interface,
973
attribute._dbus_signature)
974
(types.FunctionType(
975
nonmethod_func.func_code,
976
nonmethod_func.func_globals,
977
nonmethod_func.func_name,
978
nonmethod_func.func_defaults,
979
nonmethod_func.func_closure)))
980
# Define a creator of a function to call both the
981
# old and new functions, so both the old and new
982
# signals gets sent when the function is called
983
def fixscope(func1, func2):
984
"""This function is a scope container to pass
985
func1 and func2 to the "call_both" function
986
outside of its arguments"""
987
def call_both(*args, **kwargs):
988
"""This function will emit two D-Bus
989
signals by calling func1 and func2"""
990
func1(*args, **kwargs)
991
func2(*args, **kwargs)
992
return call_both
993
# Create the "call_both" function and add it to
994
# the class
995
attr[attrname] = fixscope(attribute,
996
new_function)
997
# Is this a D-Bus method?
998
elif getattr(attribute, "_dbus_is_method", False):
999
# Create a new, but exactly alike, function
1000
# object. Decorate it to be a new D-Bus method
1001
# with the alternate D-Bus interface name. Add it
1002
# to the class.
1003
attr[attrname] = (dbus.service.method
1004
(alt_interface,
1005
attribute._dbus_in_signature,
1006
attribute._dbus_out_signature)
1007
(types.FunctionType
1008
(attribute.func_code,
1009
attribute.func_globals,
1010
attribute.func_name,
1011
attribute.func_defaults,
1012
attribute.func_closure)))
1013
# Is this a D-Bus property?
1014
elif getattr(attribute, "_dbus_is_property", False):
1015
# Create a new, but exactly alike, function
1016
# object, and decorate it to be a new D-Bus
1017
# property with the alternate D-Bus interface
1018
# name. Add it to the class.
1019
attr[attrname] = (dbus_service_property
1020
(alt_interface,
1021
attribute._dbus_signature,
1022
attribute._dbus_access,
1023
attribute
1024
._dbus_get_args_options
1025
["byte_arrays"])
1026
(types.FunctionType
1027
(attribute.func_code,
1028
attribute.func_globals,
1029
attribute.func_name,
1030
attribute.func_defaults,
1031
attribute.func_closure)))
1032
return type.__new__(mcs, name, bases, attr)
1033
1034
1035
669
class ClientDBus(Client, DBusObjectWithProperties):
1036
670
"""A Client class using D-Bus
1037
671
1039
673
dbus_object_path: dbus.ObjectPath
1040
674
bus: dbus.SystemBus()
1041
675
"""
1042
1043
runtime_expansions = (Client.runtime_expansions
1044
+ ("dbus_object_path",))
1045
1046
676
# dbus.service.Object doesn't use super(), so we can't either.
1047
677
1048
678
def __init__(self, bus = None, *args, **kwargs):
1049
679
self.bus = bus
1050
680
Client.__init__(self, *args, **kwargs)
1051
1052
self._approvals_pending = 0
1053
681
# Only now, when this client is initialized, can it show up on
1054
682
# the D-Bus
1055
client_object_name = unicode(self.name).translate(
1056
{ord("."): ord("_"),
1057
ord("-"): ord("_")})
1058
683
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1060
686
DBusObjectWithProperties.__init__(self, self.bus,
1061
687
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_approval_request = notifychangeproperty(
1105
datetime_to_dbus, "LastApprovalRequest")
1106
approved_by_default = notifychangeproperty(dbus.Boolean,
1107
"ApprovedByDefault")
1108
approval_delay = notifychangeproperty(dbus.UInt64,
1109
"ApprovalDelay",
1110
type_func =
1111
timedelta_to_milliseconds)
1112
approval_duration = notifychangeproperty(
1113
dbus.UInt64, "ApprovalDuration",
1114
type_func = timedelta_to_milliseconds)
1115
host = notifychangeproperty(dbus.String, "Host")
1116
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1117
type_func =
1118
timedelta_to_milliseconds)
1119
extended_timeout = notifychangeproperty(
1120
dbus.UInt64, "ExtendedTimeout",
1121
type_func = timedelta_to_milliseconds)
1122
interval = notifychangeproperty(dbus.UInt64,
1123
"Interval",
1124
type_func =
1125
timedelta_to_milliseconds)
1126
checker_command = notifychangeproperty(dbus.String, "Checker")
1127
1128
del notifychangeproperty
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
1129
716
1130
717
def __del__(self, *args, **kwargs):
1131
718
try:
1132
719
self.remove_from_connection()
1133
720
except LookupError:
1134
721
pass
1135
if hasattr(DBusObjectWithProperties, "__del__"):
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1136
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1137
724
Client.__del__(self, *args, **kwargs)
1138
725
1140
727
*args, **kwargs):
1141
728
self.checker_callback_tag = None
1142
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
1143
733
if os.WIFEXITED(condition):
1144
734
exitstatus = os.WEXITSTATUS(condition)
1145
735
# Emit D-Bus signal
1155
745
return Client.checker_callback(self, pid, condition, command,
1156
746
*args, **kwargs)
1157
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1158
757
def start_checker(self, *args, **kwargs):
1159
758
old_checker = self.checker
1160
759
if self.checker is not None:
1167
766
and old_checker_pid != self.checker.pid):
1168
767
# Emit D-Bus signal
1169
768
self.CheckerStarted(self.current_checker_command)
1170
return r
1171
1172
def _reset_approved(self):
1173
self.approved = None
1174
return False
1175
1176
def approve(self, value=True):
1177
self.send_changedstate()
1178
self.approved = value
1179
gobject.timeout_add(timedelta_to_milliseconds
1180
(self.approval_duration),
1181
self._reset_approved)
1182
1183
1184
## D-Bus methods, signals & properties
1185
_interface = "se.recompile.Mandos.Client"
1186
1187
## Signals
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
1188
790
1189
791
# CheckerCompleted - signal
1190
@dbus.service.signal(_interface, signature="nxs")
792
@dbus.service.signal(_interface, signature=u"nxs")
1191
793
def CheckerCompleted(self, exitcode, waitstatus, command):
1192
794
"D-Bus signal"
1193
795
pass
1194
796
1195
797
# CheckerStarted - signal
1196
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
1197
799
def CheckerStarted(self, command):
1198
800
"D-Bus signal"
1199
801
pass
1200
802
1201
803
# PropertyChanged - signal
1202
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
1203
805
def PropertyChanged(self, property, value):
1204
806
"D-Bus signal"
1205
807
pass
1207
809
# GotSecret - signal
1208
810
@dbus.service.signal(_interface)
1209
811
def GotSecret(self):
1210
"""D-Bus signal
1211
Is sent after a successful transfer of secret from the Mandos
1212
server to mandos-client
1213
"""
812
"D-Bus signal"
1214
813
pass
1215
814
1216
815
# Rejected - signal
1217
@dbus.service.signal(_interface, signature="s")
1218
def Rejected(self, reason):
1219
"D-Bus signal"
1220
pass
1221
1222
# NeedApproval - signal
1223
@dbus.service.signal(_interface, signature="tb")
1224
def NeedApproval(self, timeout, default):
1225
"D-Bus signal"
1226
return self.need_approval()
1227
1228
# NeRwequest - signal
1229
@dbus.service.signal(_interface, signature="s")
1230
def NewRequest(self, ip):
1231
"""D-Bus signal
1232
Is sent after a client request a password.
1233
"""
1234
pass
1235
1236
## Methods
1237
1238
# Approve - method
1239
@dbus.service.method(_interface, in_signature="b")
1240
def Approve(self, value):
1241
self.approve(value)
1242
1243
# CheckedOK - method
1244
@dbus.service.method(_interface)
1245
def CheckedOK(self):
1246
self.checked_ok()
816
@dbus.service.signal(_interface)
817
def Rejected(self):
818
"D-Bus signal"
819
pass
1247
820
1248
821
# Enable - method
1249
822
@dbus.service.method(_interface)
1268
841
def StopChecker(self):
1269
842
self.stop_checker()
1270
843
1271
## Properties
1272
1273
# ApprovalPending - property
1274
@dbus_service_property(_interface, signature="b", access="read")
1275
def ApprovalPending_dbus_property(self):
1276
return dbus.Boolean(bool(self.approvals_pending))
1277
1278
# ApprovedByDefault - property
1279
@dbus_service_property(_interface, signature="b",
1280
access="readwrite")
1281
def ApprovedByDefault_dbus_property(self, value=None):
1282
if value is None: # get
1283
return dbus.Boolean(self.approved_by_default)
1284
self.approved_by_default = bool(value)
1285
1286
# ApprovalDelay - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def ApprovalDelay_dbus_property(self, value=None):
1290
if value is None: # get
1291
return dbus.UInt64(self.approval_delay_milliseconds())
1292
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1293
1294
# ApprovalDuration - property
1295
@dbus_service_property(_interface, signature="t",
1296
access="readwrite")
1297
def ApprovalDuration_dbus_property(self, value=None):
1298
if value is None: # get
1299
return dbus.UInt64(timedelta_to_milliseconds(
1300
self.approval_duration))
1301
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1302
1303
# Name - property
1304
@dbus_service_property(_interface, signature="s", access="read")
1305
def Name_dbus_property(self):
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1306
847
return dbus.String(self.name)
1307
848
1308
# Fingerprint - property
1309
@dbus_service_property(_interface, signature="s", access="read")
1310
def Fingerprint_dbus_property(self):
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1311
852
return dbus.String(self.fingerprint)
1312
853
1313
# Host - property
1314
@dbus_service_property(_interface, signature="s",
1315
access="readwrite")
1316
def Host_dbus_property(self, value=None):
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1317
858
if value is None: # get
1318
859
return dbus.String(self.host)
1319
self.host = unicode(value)
1320
1321
# Created - property
1322
@dbus_service_property(_interface, signature="s", access="read")
1323
def Created_dbus_property(self):
1324
return datetime_to_dbus(self.created)
1325
1326
# LastEnabled - property
1327
@dbus_service_property(_interface, signature="s", access="read")
1328
def LastEnabled_dbus_property(self):
1329
return datetime_to_dbus(self.last_enabled)
1330
1331
# Enabled - property
1332
@dbus_service_property(_interface, signature="b",
1333
access="readwrite")
1334
def Enabled_dbus_property(self, value=None):
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1335
881
if value is None: # get
1336
882
return dbus.Boolean(self.enabled)
1337
883
if value:
1339
885
else:
1340
886
self.disable()
1341
887
1342
# LastCheckedOK - property
1343
@dbus_service_property(_interface, signature="s",
1344
access="readwrite")
1345
def LastCheckedOK_dbus_property(self, value=None):
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1346
892
if value is not None:
1347
893
self.checked_ok()
1348
894
return
1349
return datetime_to_dbus(self.last_checked_ok)
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):
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1365
904
if value is None: # get
1366
905
return dbus.UInt64(self.timeout_milliseconds())
1367
906
self.timeout = datetime.timedelta(0, 0, 0, value)
1368
if getattr(self, "disable_initiator_tag", None) is None:
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
1369
911
return
1370
912
# Reschedule timeout
1371
913
gobject.source_remove(self.disable_initiator_tag)
1372
914
self.disable_initiator_tag = None
1373
self.expires = None
1374
time_to_die = timedelta_to_milliseconds((self
1375
.last_checked_ok
1376
+ self.timeout)
1377
- datetime.datetime
1378
.utcnow())
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
1379
921
if time_to_die <= 0:
1380
922
# The timeout has passed
1381
923
self.disable()
1382
924
else:
1383
self.expires = (datetime.datetime.utcnow()
1384
+ datetime.timedelta(milliseconds =
1385
time_to_die))
1386
925
self.disable_initiator_tag = (gobject.timeout_add
1387
926
(time_to_die, self.disable))
1388
927
1389
# ExtendedTimeout - property
1390
@dbus_service_property(_interface, signature="t",
1391
access="readwrite")
1392
def ExtendedTimeout_dbus_property(self, value=None):
1393
if value is None: # get
1394
return dbus.UInt64(self.extended_timeout_milliseconds())
1395
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1396
1397
# Interval - property
1398
@dbus_service_property(_interface, signature="t",
1399
access="readwrite")
1400
def Interval_dbus_property(self, value=None):
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1401
932
if value is None: # get
1402
933
return dbus.UInt64(self.interval_milliseconds())
1403
934
self.interval = datetime.timedelta(0, 0, 0, value)
1404
if getattr(self, "checker_initiator_tag", None) is None:
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1405
939
return
1406
if self.enabled:
1407
# Reschedule checker run
1408
gobject.source_remove(self.checker_initiator_tag)
1409
self.checker_initiator_tag = (gobject.timeout_add
1410
(value, self.start_checker))
1411
self.start_checker() # Start one now, too
1412
1413
# Checker - property
1414
@dbus_service_property(_interface, signature="s",
1415
access="readwrite")
1416
def Checker_dbus_property(self, value=None):
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1417
950
if value is None: # get
1418
951
return dbus.String(self.checker_command)
1419
self.checker_command = unicode(value)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
1420
957
1421
# CheckerRunning - property
1422
@dbus_service_property(_interface, signature="b",
1423
access="readwrite")
1424
def CheckerRunning_dbus_property(self, value=None):
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1425
962
if value is None: # get
1426
963
return dbus.Boolean(self.checker is not None)
1427
964
if value:
1429
966
else:
1430
967
self.stop_checker()
1431
968
1432
# ObjectPath - property
1433
@dbus_service_property(_interface, signature="o", access="read")
1434
def ObjectPath_dbus_property(self):
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1435
972
return self.dbus_object_path # is already a dbus.ObjectPath
1436
973
1437
# Secret = property
1438
@dbus_service_property(_interface, signature="ay",
1439
access="write", byte_arrays=True)
1440
def Secret_dbus_property(self, value):
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1441
978
self.secret = str(value)
1442
979
1443
980
del _interface
1444
981
1445
982
1446
class ProxyClient(object):
1447
def __init__(self, child_pipe, fpr, address):
1448
self._pipe = child_pipe
1449
self._pipe.send(('init', fpr, address))
1450
if not self._pipe.recv():
1451
raise KeyError()
1452
1453
def __getattribute__(self, name):
1454
if name == '_pipe':
1455
return super(ProxyClient, self).__getattribute__(name)
1456
self._pipe.send(('getattr', name))
1457
data = self._pipe.recv()
1458
if data[0] == 'data':
1459
return data[1]
1460
if data[0] == 'function':
1461
def func(*args, **kwargs):
1462
self._pipe.send(('funcall', name, args, kwargs))
1463
return self._pipe.recv()[1]
1464
return func
1465
1466
def __setattr__(self, name, value):
1467
if name == '_pipe':
1468
return super(ProxyClient, self).__setattr__(name, value)
1469
self._pipe.send(('setattr', name, value))
1470
1471
1472
class ClientDBusTransitional(ClientDBus):
1473
__metaclass__ = AlternateDBusNamesMetaclass
1474
1475
1476
983
class ClientHandler(socketserver.BaseRequestHandler, object):
1477
984
"""A class to handle client connections.
1478
985
1480
987
Note: This will run in its own forked process."""
1481
988
1482
989
def handle(self):
1483
with contextlib.closing(self.server.child_pipe) as child_pipe:
1484
logger.info("TCP connection from: %s",
1485
unicode(self.client_address))
1486
logger.debug("Pipe FD: %d",
1487
self.server.child_pipe.fileno())
1488
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1489
995
session = (gnutls.connection
1490
996
.ClientSession(self.request,
1491
997
gnutls.connection
1492
998
.X509Credentials()))
1493
999
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1494
1009
# Note: gnutls.connection.X509Credentials is really a
1495
1010
# generic GnuTLS certificate credentials object so long as
1496
1011
# no X.509 keys are added to it. Therefore, we can use it
1497
1012
# here despite using OpenPGP certificates.
1498
1013
1499
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1500
# "+AES-256-CBC", "+SHA1",
1501
# "+COMP-NULL", "+CTYPE-OPENPGP",
1502
# "+DHE-DSS"))
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1503
1018
# Use a fallback default, since this MUST be set.
1504
1019
priority = self.server.gnutls_priority
1505
1020
if priority is None:
1506
priority = "NORMAL"
1021
priority = u"NORMAL"
1507
1022
(gnutls.library.functions
1508
1023
.gnutls_priority_set_direct(session._c_object,
1509
1024
priority, None))
1510
1025
1511
# Start communication using the Mandos protocol
1512
# Get protocol number
1513
line = self.request.makefile().readline()
1514
logger.debug("Protocol version: %r", line)
1515
try:
1516
if int(line.strip().split()[0]) > 1:
1517
raise RuntimeError
1518
except (ValueError, IndexError, RuntimeError) as error:
1519
logger.error("Unknown protocol version: %s", error)
1520
return
1521
1522
# Start GnuTLS connection
1523
1026
try:
1524
1027
session.handshake()
1525
except gnutls.errors.GNUTLSError as error:
1526
logger.warning("Handshake failed: %s", error)
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1527
1030
# Do not run session.bye() here: the session is not
1528
1031
# established. Just abandon the request.
1529
1032
return
1530
logger.debug("Handshake succeeded")
1531
1532
approval_required = False
1033
logger.debug(u"Handshake succeeded")
1533
1034
try:
1534
try:
1535
fpr = self.fingerprint(self.peer_certificate
1536
(session))
1537
except (TypeError,
1538
gnutls.errors.GNUTLSError) as error:
1539
logger.warning("Bad certificate: %s", error)
1540
return
1541
logger.debug("Fingerprint: %s", fpr)
1542
1543
try:
1544
client = ProxyClient(child_pipe, fpr,
1545
self.client_address)
1546
except KeyError:
1547
return
1548
1549
if self.server.use_dbus:
1550
# Emit D-Bus signal
1551
client.NewRequest(str(self.client_address))
1552
1553
if client.approval_delay:
1554
delay = client.approval_delay
1555
client.approvals_pending += 1
1556
approval_required = True
1557
1558
while True:
1559
if not client.enabled:
1560
logger.info("Client %s is disabled",
1561
client.name)
1562
if self.server.use_dbus:
1563
# Emit D-Bus signal
1564
client.Rejected("Disabled")
1565
return
1566
1567
if client.approved or not client.approval_delay:
1568
#We are approved or approval is disabled
1569
break
1570
elif client.approved is None:
1571
logger.info("Client %s needs approval",
1572
client.name)
1573
if self.server.use_dbus:
1574
# Emit D-Bus signal
1575
client.NeedApproval(
1576
client.approval_delay_milliseconds(),
1577
client.approved_by_default)
1578
else:
1579
logger.warning("Client %s was not approved",
1580
client.name)
1581
if self.server.use_dbus:
1582
# Emit D-Bus signal
1583
client.Rejected("Denied")
1584
return
1585
1586
#wait until timeout or approved
1587
time = datetime.datetime.now()
1588
client.changedstate.acquire()
1589
(client.changedstate.wait
1590
(float(client.timedelta_to_milliseconds(delay)
1591
/ 1000)))
1592
client.changedstate.release()
1593
time2 = datetime.datetime.now()
1594
if (time2 - time) >= delay:
1595
if not client.approved_by_default:
1596
logger.warning("Client %s timed out while"
1597
" waiting for approval",
1598
client.name)
1599
if self.server.use_dbus:
1600
# Emit D-Bus signal
1601
client.Rejected("Approval timed out")
1602
return
1603
else:
1604
break
1605
else:
1606
delay -= time2 - time
1607
1608
sent_size = 0
1609
while sent_size < len(client.secret):
1610
try:
1611
sent = session.send(client.secret[sent_size:])
1612
except gnutls.errors.GNUTLSError as error:
1613
logger.warning("gnutls send failed")
1614
return
1615
logger.debug("Sent: %d, remaining: %d",
1616
sent, len(client.secret)
1617
- (sent_size + sent))
1618
sent_size += sent
1619
1620
logger.info("Sending secret to %s", client.name)
1621
# bump the timeout using extended_timeout
1622
client.checked_ok(client.extended_timeout)
1623
if self.server.use_dbus:
1624
# Emit D-Bus signal
1625
client.GotSecret()
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1626
1041
1627
finally:
1628
if approval_required:
1629
client.approvals_pending -= 1
1630
try:
1631
session.bye()
1632
except gnutls.errors.GNUTLSError as error:
1633
logger.warning("GnuTLS bye failed")
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1634
1067
1635
1068
@staticmethod
1636
1069
def peer_certificate(session):
1646
1079
.gnutls_certificate_get_peers
1647
1080
(session._c_object, ctypes.byref(list_size)))
1648
1081
if not bool(cert_list) and list_size.value != 0:
1649
raise gnutls.errors.GNUTLSError("error getting peer"
1650
" certificate")
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1651
1084
if list_size.value == 0:
1652
1085
return None
1653
1086
cert = cert_list[0]
1679
1112
if crtverify.value != 0:
1680
1113
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1681
1114
raise (gnutls.errors.CertificateSecurityError
1682
("Verify failed"))
1115
(u"Verify failed"))
1683
1116
# New buffer for the fingerprint
1684
1117
buf = ctypes.create_string_buffer(20)
1685
1118
buf_len = ctypes.c_size_t()
1692
1125
# Convert the buffer to a Python bytestring
1693
1126
fpr = ctypes.string_at(buf, buf_len.value)
1694
1127
# Convert the bytestring to hexadecimal notation
1695
hex_fpr = binascii.hexlify(fpr).upper()
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1696
1129
return hex_fpr
1697
1130
1698
1131
1699
class MultiprocessingMixIn(object):
1700
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1701
def sub_process_main(self, request, address):
1702
try:
1703
self.finish_request(request, address)
1704
except Exception:
1705
self.handle_error(request, address)
1706
self.close_request(request)
1707
1708
def process_request(self, request, address):
1709
"""Start a new process to process the request."""
1710
proc = multiprocessing.Process(target = self.sub_process_main,
1711
args = (request,
1712
address))
1713
proc.start()
1714
return proc
1715
1716
1717
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1718
""" adds a pipe to the MixIn """
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1719
1134
def process_request(self, request, client_address):
1720
1135
"""Overrides and wraps the original process_request().
1721
1136
1722
1137
This function creates a new pipe in self.pipe
1723
1138
"""
1724
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1725
1726
proc = MultiprocessingMixIn.process_request(self, request,
1727
client_address)
1728
self.child_pipe.close()
1729
self.add_pipe(parent_pipe, proc)
1730
1731
def add_pipe(self, parent_pipe, proc):
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1732
1145
"""Dummy function; override as necessary"""
1733
raise NotImplementedError
1734
1735
1736
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1737
1150
socketserver.TCPServer, object):
1738
1151
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1739
1152
1755
1168
bind to an address or port if they were not specified."""
1756
1169
if self.interface is not None:
1757
1170
if SO_BINDTODEVICE is None:
1758
logger.error("SO_BINDTODEVICE does not exist;"
1759
" cannot bind to interface %s",
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1760
1173
self.interface)
1761
1174
else:
1762
1175
try:
1763
1176
self.socket.setsockopt(socket.SOL_SOCKET,
1764
1177
SO_BINDTODEVICE,
1765
1178
str(self.interface
1766
+ '\0'))
1767
except socket.error as error:
1179
+ u'\0'))
1180
except socket.error, error:
1768
1181
if error[0] == errno.EPERM:
1769
logger.error("No permission to"
1770
" bind to interface %s",
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1771
1184
self.interface)
1772
1185
elif error[0] == errno.ENOPROTOOPT:
1773
logger.error("SO_BINDTODEVICE not available;"
1774
" cannot bind to interface %s",
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1775
1188
self.interface)
1776
1189
else:
1777
1190
raise
1779
1192
if self.server_address[0] or self.server_address[1]:
1780
1193
if not self.server_address[0]:
1781
1194
if self.address_family == socket.AF_INET6:
1782
any_address = "::" # in6addr_any
1195
any_address = u"::" # in6addr_any
1783
1196
else:
1784
1197
any_address = socket.INADDR_ANY
1785
1198
self.server_address = (any_address,
1812
1225
self.enabled = False
1813
1226
self.clients = clients
1814
1227
if self.clients is None:
1815
self.clients = {}
1228
self.clients = set()
1816
1229
self.use_dbus = use_dbus
1817
1230
self.gnutls_priority = gnutls_priority
1818
1231
IPv6_TCPServer.__init__(self, server_address,
1822
1235
def server_activate(self):
1823
1236
if self.enabled:
1824
1237
return socketserver.TCPServer.server_activate(self)
1825
1826
1238
def enable(self):
1827
1239
self.enabled = True
1828
1829
def add_pipe(self, parent_pipe, proc):
1240
def add_pipe(self, pipe):
1830
1241
# Call "handle_ipc" for both data and EOF events
1831
gobject.io_add_watch(parent_pipe.fileno(),
1832
gobject.IO_IN | gobject.IO_HUP,
1833
functools.partial(self.handle_ipc,
1834
parent_pipe =
1835
parent_pipe,
1836
proc = proc))
1837
1838
def handle_ipc(self, source, condition, parent_pipe=None,
1839
proc = None, client_object=None):
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1840
1245
condition_names = {
1841
gobject.IO_IN: "IN", # There is data to read.
1842
gobject.IO_OUT: "OUT", # Data can be written (without
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1843
1248
# blocking).
1844
gobject.IO_PRI: "PRI", # There is urgent data to read.
1845
gobject.IO_ERR: "ERR", # Error condition.
1846
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1847
1252
# broken, usually for pipes and
1848
1253
# sockets).
1849
1254
}
1851
1256
for cond, name in
1852
1257
condition_names.iteritems()
1853
1258
if cond & condition)
1854
# error, or the other end of multiprocessing.Pipe has closed
1855
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1856
# Wait for other process to exit
1857
proc.join()
1858
return False
1859
1860
# Read a request from the child
1861
request = parent_pipe.recv()
1862
command = request[0]
1863
1864
if command == 'init':
1865
fpr = request[1]
1866
address = request[2]
1867
1868
for c in self.clients.itervalues():
1869
if c.fingerprint == fpr:
1870
client = c
1871
break
1872
else:
1873
logger.info("Client not found for fingerprint: %s, ad"
1874
"dress: %s", fpr, address)
1875
if self.use_dbus:
1876
# Emit D-Bus signal
1877
mandos_dbus_service.ClientNotFound(fpr,
1878
address[0])
1879
parent_pipe.send(False)
1880
return False
1881
1882
gobject.io_add_watch(parent_pipe.fileno(),
1883
gobject.IO_IN | gobject.IO_HUP,
1884
functools.partial(self.handle_ipc,
1885
parent_pipe =
1886
parent_pipe,
1887
proc = proc,
1888
client_object =
1889
client))
1890
parent_pipe.send(True)
1891
# remove the old hook in favor of the new above hook on
1892
# same fileno
1893
return False
1894
if command == 'funcall':
1895
funcname = request[1]
1896
args = request[2]
1897
kwargs = request[3]
1898
1899
parent_pipe.send(('data', getattr(client_object,
1900
funcname)(*args,
1901
**kwargs)))
1902
1903
if command == 'getattr':
1904
attrname = request[1]
1905
if callable(client_object.__getattribute__(attrname)):
1906
parent_pipe.send(('function',))
1907
else:
1908
parent_pipe.send(('data', client_object
1909
.__getattribute__(attrname)))
1910
1911
if command == 'setattr':
1912
attrname = request[1]
1913
value = request[2]
1914
setattr(client_object, attrname, value)
1915
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
1916
1313
return True
1917
1314
1918
1315
1919
1316
def string_to_delta(interval):
1920
1317
"""Parse a string and return a datetime.timedelta
1921
1318
1922
>>> string_to_delta('7d')
1319
>>> string_to_delta(u'7d')
1923
1320
datetime.timedelta(7)
1924
>>> string_to_delta('60s')
1321
>>> string_to_delta(u'60s')
1925
1322
datetime.timedelta(0, 60)
1926
>>> string_to_delta('60m')
1323
>>> string_to_delta(u'60m')
1927
1324
datetime.timedelta(0, 3600)
1928
>>> string_to_delta('24h')
1325
>>> string_to_delta(u'24h')
1929
1326
datetime.timedelta(1)
1930
>>> string_to_delta('1w')
1327
>>> string_to_delta(u'1w')
1931
1328
datetime.timedelta(7)
1932
>>> string_to_delta('5m 30s')
1329
>>> string_to_delta(u'5m 30s')
1933
1330
datetime.timedelta(0, 330)
1934
1331
"""
1935
1332
timevalue = datetime.timedelta(0)
1937
1334
try:
1938
1335
suffix = unicode(s[-1])
1939
1336
value = int(s[:-1])
1940
if suffix == "d":
1337
if suffix == u"d":
1941
1338
delta = datetime.timedelta(value)
1942
elif suffix == "s":
1339
elif suffix == u"s":
1943
1340
delta = datetime.timedelta(0, value)
1944
elif suffix == "m":
1341
elif suffix == u"m":
1945
1342
delta = datetime.timedelta(0, 0, 0, 0, value)
1946
elif suffix == "h":
1343
elif suffix == u"h":
1947
1344
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1948
elif suffix == "w":
1345
elif suffix == u"w":
1949
1346
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1950
1347
else:
1951
raise ValueError("Unknown suffix %r" % suffix)
1952
except (ValueError, IndexError) as e:
1953
raise ValueError(*(e.args))
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
1954
1351
timevalue += delta
1955
1352
return timevalue
1956
1353
1957
1354
1355
def if_nametoindex(interface):
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
1359
global if_nametoindex
1360
try:
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1363
.if_nametoindex)
1364
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1366
def if_nametoindex(interface):
1367
"Get an interface index the hard way, i.e. using fcntl()"
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
1375
return interface_index
1376
return if_nametoindex(interface)
1377
1378
1958
1379
def daemon(nochdir = False, noclose = False):
1959
1380
"""See daemon(3). Standard BSD Unix function.
1960
1381
1963
1384
sys.exit()
1964
1385
os.setsid()
1965
1386
if not nochdir:
1966
os.chdir("/")
1387
os.chdir(u"/")
1967
1388
if os.fork():
1968
1389
sys.exit()
1969
1390
if not noclose:
1971
1392
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1972
1393
if not stat.S_ISCHR(os.fstat(null).st_mode):
1973
1394
raise OSError(errno.ENODEV,
1974
"%s not a character device"
1395
u"%s not a character device"
1975
1396
% os.path.devnull)
1976
1397
os.dup2(null, sys.stdin.fileno())
1977
1398
os.dup2(null, sys.stdout.fileno())
1985
1406
##################################################################
1986
1407
# Parsing of options, both command line and config file
1987
1408
1988
parser = argparse.ArgumentParser()
1989
parser.add_argument("-v", "--version", action="version",
1990
version = "%%(prog)s %s" % version,
1991
help="show version number and exit")
1992
parser.add_argument("-i", "--interface", metavar="IF",
1993
help="Bind to interface IF")
1994
parser.add_argument("-a", "--address",
1995
help="Address to listen for requests on")
1996
parser.add_argument("-p", "--port", type=int,
1997
help="Port number to receive requests on")
1998
parser.add_argument("--check", action="store_true",
1999
help="Run self-test")
2000
parser.add_argument("--debug", action="store_true",
2001
help="Debug mode; run in foreground and log"
2002
" to terminal")
2003
parser.add_argument("--debuglevel", metavar="LEVEL",
2004
help="Debug level for stdout output")
2005
parser.add_argument("--priority", help="GnuTLS"
2006
" priority string (see GnuTLS documentation)")
2007
parser.add_argument("--servicename",
2008
metavar="NAME", help="Zeroconf service name")
2009
parser.add_argument("--configdir",
2010
default="/etc/mandos", metavar="DIR",
2011
help="Directory to search for configuration"
2012
" files")
2013
parser.add_argument("--no-dbus", action="store_false",
2014
dest="use_dbus", help="Do not provide D-Bus"
2015
" system bus interface")
2016
parser.add_argument("--no-ipv6", action="store_false",
2017
dest="use_ipv6", help="Do not use IPv6")
2018
parser.add_argument("--no-restore", action="store_false",
2019
dest="restore", help="Do not restore stored"
2020
" state")
2021
parser.add_argument("--statedir", metavar="DIR",
2022
help="Directory to save/restore state in")
2023
2024
options = parser.parse_args()
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
2025
1435
2026
1436
if options.check:
2027
1437
import doctest
2029
1439
sys.exit()
2030
1440
2031
1441
# Default values for config file for server-global settings
2032
server_defaults = { "interface": "",
2033
"address": "",
2034
"port": "",
2035
"debug": "False",
2036
"priority":
2037
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2038
"servicename": "Mandos",
2039
"use_dbus": "True",
2040
"use_ipv6": "True",
2041
"debuglevel": "",
2042
"restore": "True",
2043
"statedir": "/var/lib/mandos"
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
2044
1451
}
2045
1452
2046
1453
# Parse config file for server-global settings
2047
1454
server_config = configparser.SafeConfigParser(server_defaults)
2048
1455
del server_defaults
2049
1456
server_config.read(os.path.join(options.configdir,
2050
"mandos.conf"))
1457
u"mandos.conf"))
2051
1458
# Convert the SafeConfigParser object to a dict
2052
1459
server_settings = server_config.defaults()
2053
1460
# Use the appropriate methods on the non-string config options
2054
for option in ("debug", "use_dbus", "use_ipv6"):
2055
server_settings[option] = server_config.getboolean("DEFAULT",
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
2056
1463
option)
2057
1464
if server_settings["port"]:
2058
server_settings["port"] = server_config.getint("DEFAULT",
2059
"port")
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
2060
1467
del server_config
2061
1468
2062
1469
# Override the settings from the config file with command line
2063
1470
# options, if set.
2064
for option in ("interface", "address", "port", "debug",
2065
"priority", "servicename", "configdir",
2066
"use_dbus", "use_ipv6", "debuglevel", "restore",
2067
"statedir"):
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
2068
1474
value = getattr(options, option)
2069
1475
if value is not None:
2070
1476
server_settings[option] = value
2078
1484
##################################################################
2079
1485
2080
1486
# For convenience
2081
debug = server_settings["debug"]
2082
debuglevel = server_settings["debuglevel"]
2083
use_dbus = server_settings["use_dbus"]
2084
use_ipv6 = server_settings["use_ipv6"]
2085
stored_state_path = os.path.join(server_settings["statedir"],
2086
stored_state_file)
2087
2088
if debug:
2089
initlogger(logging.DEBUG)
2090
else:
2091
if not debuglevel:
2092
initlogger()
2093
else:
2094
level = getattr(logging, debuglevel.upper())
2095
initlogger(level)
2096
2097
if server_settings["servicename"] != "Mandos":
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
2098
1496
syslogger.setFormatter(logging.Formatter
2099
('Mandos (%s) [%%(process)d]:'
2100
' %%(levelname)s: %%(message)s'
2101
% server_settings["servicename"]))
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
2102
1500
2103
1501
# Parse config file with clients
2104
client_config = configparser.SafeConfigParser(Client.client_defaults)
2105
client_config.read(os.path.join(server_settings["configdir"],
2106
"clients.conf"))
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1506
}
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
2107
1510
2108
1511
global mandos_dbus_service
2109
1512
mandos_dbus_service = None
2110
1513
2111
tcp_server = MandosServer((server_settings["address"],
2112
server_settings["port"]),
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
2113
1516
ClientHandler,
2114
interface=(server_settings["interface"]
2115
or None),
1517
interface=server_settings[u"interface"],
2116
1518
use_ipv6=use_ipv6,
2117
1519
gnutls_priority=
2118
server_settings["priority"],
1520
server_settings[u"priority"],
2119
1521
use_dbus=use_dbus)
2120
if not debug:
2121
pidfilename = "/var/run/mandos.pid"
2122
try:
2123
pidfile = open(pidfilename, "w")
2124
except IOError:
2125
logger.error("Could not open file %r", pidfilename)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
2126
1527
2127
1528
try:
2128
uid = pwd.getpwnam("_mandos").pw_uid
2129
gid = pwd.getpwnam("_mandos").pw_gid
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
2130
1531
except KeyError:
2131
1532
try:
2132
uid = pwd.getpwnam("mandos").pw_uid
2133
gid = pwd.getpwnam("mandos").pw_gid
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
2134
1535
except KeyError:
2135
1536
try:
2136
uid = pwd.getpwnam("nobody").pw_uid
2137
gid = pwd.getpwnam("nobody").pw_gid
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
2138
1539
except KeyError:
2139
1540
uid = 65534
2140
1541
gid = 65534
2141
1542
try:
2142
1543
os.setgid(gid)
2143
1544
os.setuid(uid)
2144
except OSError as error:
1545
except OSError, error:
2145
1546
if error[0] != errno.EPERM:
2146
1547
raise error
2147
1548
1549
# Enable all possible GnuTLS debugging
2148
1550
if debug:
2149
# Enable all possible GnuTLS debugging
2150
2151
1551
# "Use a log level over 10 to enable all debugging options."
2152
1552
# - GnuTLS manual
2153
1553
gnutls.library.functions.gnutls_global_set_log_level(11)
2154
1554
2155
1555
@gnutls.library.types.gnutls_log_func
2156
1556
def debug_gnutls(level, string):
2157
logger.debug("GnuTLS: %s", string[:-1])
1557
logger.debug(u"GnuTLS: %s", string[:-1])
2158
1558
2159
1559
(gnutls.library.functions
2160
1560
.gnutls_global_set_log_function(debug_gnutls))
2161
2162
# Redirect stdin so all checkers get /dev/null
2163
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2164
os.dup2(null, sys.stdin.fileno())
2165
if null > 2:
2166
os.close(null)
2167
else:
2168
# No console logging
2169
logger.removeHandler(console)
2170
2171
# Need to fork before connecting to D-Bus
2172
if not debug:
2173
# Close all input and output, do double fork, etc.
2174
daemon()
2175
1561
2176
1562
global main_loop
2177
1563
# From the Avahi example code
2180
1566
bus = dbus.SystemBus()
2181
1567
# End of Avahi example code
2182
1568
if use_dbus:
2183
try:
2184
bus_name = dbus.service.BusName("se.recompile.Mandos",
2185
bus, do_not_queue=True)
2186
old_bus_name = (dbus.service.BusName
2187
("se.bsnet.fukt.Mandos", bus,
2188
do_not_queue=True))
2189
except dbus.exceptions.NameExistsException as e:
2190
logger.error(unicode(e) + ", disabling D-Bus")
2191
use_dbus = False
2192
server_settings["use_dbus"] = False
2193
tcp_server.use_dbus = False
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2194
1570
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2195
service = AvahiServiceToSyslog(name =
2196
server_settings["servicename"],
2197
servicetype = "_mandos._tcp",
2198
protocol = protocol, bus = bus)
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
2199
1574
if server_settings["interface"]:
2200
1575
service.interface = (if_nametoindex
2201
(str(server_settings["interface"])))
2202
2203
global multiprocessing_manager
2204
multiprocessing_manager = multiprocessing.Manager()
1576
(str(server_settings[u"interface"])))
2205
1577
2206
1578
client_class = Client
2207
1579
if use_dbus:
2208
client_class = functools.partial(ClientDBusTransitional,
2209
bus = bus)
2210
2211
client_settings = Client.config_parser(client_config)
2212
old_client_settings = {}
2213
clients_data = []
2214
2215
# Get client data and settings from last running state.
2216
if server_settings["restore"]:
2217
try:
2218
with open(stored_state_path, "rb") as stored_state:
2219
clients_data, old_client_settings = (pickle.load
2220
(stored_state))
2221
os.remove(stored_state_path)
2222
except IOError as e:
2223
logger.warning("Could not load persistent state: {0}"
2224
.format(e))
2225
if e.errno != errno.ENOENT:
2226
raise
2227
2228
with PGPEngine() as pgp:
2229
for client in clients_data:
2230
client_name = client["name"]
2231
2232
# Decide which value to use after restoring saved state.
2233
# We have three different values: Old config file,
2234
# new config file, and saved state.
2235
# New config value takes precedence if it differs from old
2236
# config value, otherwise use saved state.
2237
for name, value in client_settings[client_name].items():
2238
try:
2239
# For each value in new config, check if it
2240
# differs from the old config value (Except for
2241
# the "secret" attribute)
2242
if (name != "secret" and
2243
value != old_client_settings[client_name]
2244
[name]):
2245
client[name] = value
2246
except KeyError:
2247
pass
2248
2249
# Clients who has passed its expire date can still be
2250
# enabled if its last checker was successful. Clients
2251
# whose checker failed before we stored its state is
2252
# assumed to have failed all checkers during downtime.
2253
if client["enabled"]:
2254
if datetime.datetime.utcnow() >= client["expires"]:
2255
if not client["last_checked_ok"]:
2256
logger.warning(
2257
"disabling client {0} - Client never "
2258
"performed a successfull checker"
2259
.format(client["name"]))
2260
client["enabled"] = False
2261
elif client["last_checker_status"] != 0:
2262
logger.warning(
2263
"disabling client {0} - Client "
2264
"last checker failed with error code {1}"
2265
.format(client["name"],
2266
client["last_checker_status"]))
2267
client["enabled"] = False
2268
else:
2269
client["expires"] = (datetime.datetime
2270
.utcnow()
2271
+ client["timeout"])
2272
2273
client["changedstate"] = (multiprocessing_manager
2274
.Condition
2275
(multiprocessing_manager
2276
.Lock()))
2277
client["checker"] = None
2278
if use_dbus:
2279
new_client = (ClientDBusTransitional.__new__
2280
(ClientDBusTransitional))
2281
tcp_server.clients[client_name] = new_client
2282
new_client.bus = bus
2283
for name, value in client.iteritems():
2284
setattr(new_client, name, value)
2285
client_object_name = unicode(client_name).translate(
2286
{ord("."): ord("_"),
2287
ord("-"): ord("_")})
2288
new_client.dbus_object_path = (dbus.ObjectPath
2289
("/clients/"
2290
+ client_object_name))
2291
DBusObjectWithProperties.__init__(new_client,
2292
new_client.bus,
2293
new_client
2294
.dbus_object_path)
2295
else:
2296
tcp_server.clients[client_name] = (Client.__new__
2297
(Client))
2298
for name, value in client.iteritems():
2299
setattr(tcp_server.clients[client_name],
2300
name, value)
2301
2302
try:
2303
tcp_server.clients[client_name].secret = (
2304
pgp.decrypt(tcp_server.clients[client_name]
2305
.encrypted_secret,
2306
client_settings[client_name]
2307
["secret"]))
2308
except PGPError:
2309
# If decryption fails, we use secret from new settings
2310
logger.debug("Failed to decrypt {0} old secret"
2311
.format(client_name))
2312
tcp_server.clients[client_name].secret = (
2313
client_settings[client_name]["secret"])
2314
2315
# Create/remove clients based on new changes made to config
2316
for clientname in set(old_client_settings) - set(client_settings):
2317
del tcp_server.clients[clientname]
2318
for clientname in set(client_settings) - set(old_client_settings):
2319
tcp_server.clients[clientname] = (client_class(name = clientname,
2320
config =
2321
client_settings
2322
[clientname]))
2323
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
2324
1585
if not tcp_server.clients:
2325
logger.warning("No clients defined")
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1604
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
2326
1616
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
1623
2327
1624
if not debug:
2328
try:
2329
with pidfile:
2330
pid = os.getpid()
2331
pidfile.write(str(pid) + "\n".encode("utf-8"))
2332
del pidfile
2333
except IOError:
2334
logger.error("Could not write to file %r with PID %d",
2335
pidfilename, pid)
2336
except NameError:
2337
# "pidfile" was never created
2338
pass
2339
del pidfilename
2340
1625
signal.signal(signal.SIGINT, signal.SIG_IGN)
2341
2342
1626
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2343
1627
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2344
1628
2346
1630
class MandosDBusService(dbus.service.Object):
2347
1631
"""A D-Bus proxy object"""
2348
1632
def __init__(self):
2349
dbus.service.Object.__init__(self, bus, "/")
2350
_interface = "se.recompile.Mandos"
2351
2352
@dbus.service.signal(_interface, signature="o")
2353
def ClientAdded(self, objpath):
2354
"D-Bus signal"
2355
pass
2356
2357
@dbus.service.signal(_interface, signature="ss")
2358
def ClientNotFound(self, fingerprint, address):
2359
"D-Bus signal"
2360
pass
2361
2362
@dbus.service.signal(_interface, signature="os")
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
2363
1647
def ClientRemoved(self, objpath, name):
2364
1648
"D-Bus signal"
2365
1649
pass
2366
1650
2367
@dbus.service.method(_interface, out_signature="ao")
1651
@dbus.service.method(_interface, out_signature=u"ao")
2368
1652
def GetAllClients(self):
2369
1653
"D-Bus method"
2370
1654
return dbus.Array(c.dbus_object_path
2371
for c in
2372
tcp_server.clients.itervalues())
1655
for c in tcp_server.clients)
2373
1656
2374
1657
@dbus.service.method(_interface,
2375
out_signature="a{oa{sv}}")
1658
out_signature=u"a{oa{sv}}")
2376
1659
def GetAllClientsWithProperties(self):
2377
1660
"D-Bus method"
2378
1661
return dbus.Dictionary(
2379
((c.dbus_object_path, c.GetAll(""))
2380
for c in tcp_server.clients.itervalues()),
2381
signature="oa{sv}")
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2382
1665
2383
@dbus.service.method(_interface, in_signature="o")
1666
@dbus.service.method(_interface, in_signature=u"o")
2384
1667
def RemoveClient(self, object_path):
2385
1668
"D-Bus method"
2386
for c in tcp_server.clients.itervalues():
1669
for c in tcp_server.clients:
2387
1670
if c.dbus_object_path == object_path:
2388
del tcp_server.clients[c.name]
1671
tcp_server.clients.remove(c)
2389
1672
c.remove_from_connection()
2390
1673
# Don't signal anything except ClientRemoved
2391
c.disable(quiet=True)
1674
c.disable(signal=False)
2392
1675
# Emit D-Bus signal
2393
1676
self.ClientRemoved(object_path, c.name)
2394
1677
return
2395
raise KeyError(object_path)
1678
raise KeyError
2396
1679
2397
1680
del _interface
2398
1681
2399
class MandosDBusServiceTransitional(MandosDBusService):
2400
__metaclass__ = AlternateDBusNamesMetaclass
2401
mandos_dbus_service = MandosDBusServiceTransitional()
2402
2403
def cleanup():
2404
"Cleanup function; run on exit"
2405
service.cleanup()
2406
2407
multiprocessing.active_children()
2408
if not (tcp_server.clients or client_settings):
2409
return
2410
2411
# Store client before exiting. Secrets are encrypted with key
2412
# based on what config file has. If config file is
2413
# removed/edited, old secret will thus be unrecovable.
2414
clients = []
2415
with PGPEngine() as pgp:
2416
for client in tcp_server.clients.itervalues():
2417
key = client_settings[client.name]["secret"]
2418
client.encrypted_secret = pgp.encrypt(client.secret,
2419
key)
2420
client_dict = {}
2421
2422
# A list of attributes that will not be stored when
2423
# shutting down.
2424
exclude = set(("bus", "changedstate", "secret",
2425
"checker"))
2426
for name, typ in (inspect.getmembers
2427
(dbus.service.Object)):
2428
exclude.add(name)
2429
2430
client_dict["encrypted_secret"] = (client
2431
.encrypted_secret)
2432
for attr in client.client_structure:
2433
if attr not in exclude:
2434
client_dict[attr] = getattr(client, attr)
2435
2436
clients.append(client_dict)
2437
del client_settings[client.name]["secret"]
2438
2439
try:
2440
with os.fdopen(os.open(stored_state_path,
2441
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2442
0600), "wb") as stored_state:
2443
pickle.dump((clients, client_settings), stored_state)
2444
except (IOError, OSError) as e:
2445
logger.warning("Could not save persistent state: {0}"
2446
.format(e))
2447
if e.errno not in (errno.ENOENT, errno.EACCES):
2448
raise
2449
2450
# Delete all clients, and settings from config
2451
while tcp_server.clients:
2452
name, client = tcp_server.clients.popitem()
2453
if use_dbus:
2454
client.remove_from_connection()
2455
# Don't signal anything except ClientRemoved
2456
client.disable(quiet=True)
2457
if use_dbus:
2458
# Emit D-Bus signal
2459
mandos_dbus_service.ClientRemoved(client
2460
.dbus_object_path,
2461
client.name)
2462
client_settings.clear()
2463
2464
atexit.register(cleanup)
2465
2466
for client in tcp_server.clients.itervalues():
1682
mandos_dbus_service = MandosDBusService()
1683
1684
for client in tcp_server.clients:
2467
1685
if use_dbus:
2468
1686
# Emit D-Bus signal
2469
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2470
# Need to initiate checking of clients
2471
if client.enabled:
2472
client.init_checker()
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1689
client.enable()
2473
1690
2474
1691
tcp_server.enable()
2475
1692
tcp_server.server_activate()
2477
1694
# Find out what port we got
2478
1695
service.port = tcp_server.socket.getsockname()[1]
2479
1696
if use_ipv6:
2480
logger.info("Now listening on address %r, port %d,"
1697
logger.info(u"Now listening on address %r, port %d,"
2481
1698
" flowinfo %d, scope_id %d"
2482
1699
% tcp_server.socket.getsockname())
2483
1700
else: # IPv4
2484
logger.info("Now listening on address %r, port %d"
1701
logger.info(u"Now listening on address %r, port %d"
2485
1702
% tcp_server.socket.getsockname())
2486
1703
2487
1704
#service.interface = tcp_server.socket.getsockname()[3]
2490
1707
# From the Avahi example code
2491
1708
try:
2492
1709
service.activate()
2493
except dbus.exceptions.DBusException as error:
2494
logger.critical("DBusException: %s", error)
2495
cleanup()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2496
1712
sys.exit(1)
2497
1713
# End of Avahi example code
2498
1714
2501
1717
(tcp_server.handle_request
2502
1718
(*args[2:], **kwargs) or True))
2503
1719
2504
logger.debug("Starting main loop")
1720
logger.debug(u"Starting main loop")
2505
1721
main_loop.run()
2506
except AvahiError as error:
2507
logger.critical("AvahiError: %s", error)
2508
cleanup()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2509
1724
sys.exit(1)
2510
1725
except KeyboardInterrupt:
2511
1726
if debug:
2512
print("", file=sys.stderr)
2513
logger.debug("Server received KeyboardInterrupt")
2514
logger.debug("Server exiting")
2515
# Must run before the D-Bus bus name gets deregistered
2516
cleanup()
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
2517
1730
2518
1731
if __name__ == '__main__':
2519
1732
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0