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- Committer: Teddy Hogeborn
- Date: 2009-11-19 18:31:28 UTC
- Revision ID: teddy@fukt.bsnet.se-20091119183128-ttstewh61xmtnil1
* Makefile (LINK_FORTIFY_LD): Bug fix: removed "-fPIE".
* mandos-keygen: Bug fix: Fix quoting for the "--password" option.
* mandos-keygen: Bug fix: Fix quoting for the "--password" option.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
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
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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 = "1.0.14"
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
last_checker_status: integer between 0 and 255 reflecting exit
415
status of last checker. -1 reflects crashed
416
checker, or None.
417
last_enabled: datetime.datetime(); (UTC) or None
418
name: string; from the config file, used in log messages and
419
D-Bus identifiers
420
secret: bytestring; sent verbatim (over TLS) to client
421
timeout: datetime.timedelta(); How long from last_checked_ok
422
until this client is disabled
423
extended_timeout: extra long timeout when password has been sent
424
runtime_expansions: Allowed attributes for runtime expansion.
425
expires: datetime.datetime(); time (UTC) when a client will be
426
disabled, or None
427
259
"""
428
260
429
runtime_expansions = ("approval_delay", "approval_duration",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
432
"last_enabled", "name", "timeout")
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
435
"interval": "2m",
436
"checker": "fping -q -- %%(host)s",
437
"host": "",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
441
"enabled": "True",
442
}
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))
443
267
444
268
def timeout_milliseconds(self):
445
269
"Return the 'timeout' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.timeout)
447
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
451
271
452
272
def interval_milliseconds(self):
453
273
"Return the 'interval' attribute in milliseconds"
454
return timedelta_to_milliseconds(self.interval)
274
return self._timedelta_to_milliseconds(self.interval)
455
275
456
def approval_delay_milliseconds(self):
457
return timedelta_to_milliseconds(self.approval_delay)
458
459
@staticmethod
460
def config_parser(config):
461
""" Construct a new dict of client settings of this form:
462
{ client_name: {setting_name: value, ...}, ...}
463
with exceptions for any special settings as defined above"""
464
settings = {}
465
for client_name in config.sections():
466
section = dict(config.items(client_name))
467
client = settings[client_name] = {}
468
469
client["host"] = section["host"]
470
# Reformat values from string types to Python types
471
client["approved_by_default"] = config.getboolean(
472
client_name, "approved_by_default")
473
client["enabled"] = config.getboolean(client_name, "enabled")
474
475
client["fingerprint"] = (section["fingerprint"].upper()
476
.replace(" ", ""))
477
if "secret" in section:
478
client["secret"] = section["secret"].decode("base64")
479
elif "secfile" in section:
480
with open(os.path.expanduser(os.path.expandvars
481
(section["secfile"])),
482
"rb") as secfile:
483
client["secret"] = secfile.read()
484
else:
485
raise TypeError("No secret or secfile for section %s"
486
% section)
487
client["timeout"] = string_to_delta(section["timeout"])
488
client["extended_timeout"] = string_to_delta(
489
section["extended_timeout"])
490
client["interval"] = string_to_delta(section["interval"])
491
client["approval_delay"] = string_to_delta(
492
section["approval_delay"])
493
client["approval_duration"] = string_to_delta(
494
section["approval_duration"])
495
client["checker_command"] = section["checker"]
496
client["last_approval_request"] = None
497
client["last_checked_ok"] = None
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
502
+ client["timeout"])
503
else:
504
client["last_enabled"] = None
505
client["expires"] = None
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
276
def __init__(self, name = None, disable_hook=None, config=None):
511
277
"""Note: the 'checker' key in 'config' sets the
512
278
'checker_command' attribute and *not* the 'checker'
513
279
attribute."""
514
280
self.name = name
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
520
284
# Uppercase and remove spaces from fingerprint for later
521
285
# comparison purposes with return value from the fingerprint()
522
286
# function
523
logger.debug(" Fingerprint: %s", self.fingerprint)
524
self.created = settings.get("created", datetime.datetime.utcnow())
525
526
# attributes specific for this server instance
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"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
527
309
self.checker = None
528
310
self.checker_initiator_tag = None
529
311
self.disable_initiator_tag = None
530
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
531
314
self.current_checker_command = None
532
self.approved = None
533
self.approvals_pending = 0
534
self.changedstate = (multiprocessing_manager
535
.Condition(multiprocessing_manager
536
.Lock()))
537
self.client_structure = [attr for attr in
538
self.__dict__.iterkeys()
539
if not attr.startswith("_")]
540
self.client_structure.append("client_structure")
541
542
for name, t in inspect.getmembers(type(self),
543
lambda obj:
544
isinstance(obj,
545
property)):
546
if not name.startswith("_"):
547
self.client_structure.append(name)
548
549
# Send notice to process children that client state has changed
550
def send_changedstate(self):
551
with self.changedstate:
552
self.changedstate.notify_all()
315
self.last_connect = None
553
316
554
317
def enable(self):
555
318
"""Start this client's checker and timeout hooks"""
556
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
557
320
# Already enabled
558
321
return
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
562
322
self.last_enabled = datetime.datetime.utcnow()
563
self.init_checker()
564
565
def disable(self, quiet=True):
566
"""Disable this client."""
567
if not getattr(self, "enabled", False):
568
return False
569
if not quiet:
570
self.send_changedstate()
571
if not quiet:
572
logger.info("Disabling client %s", self.name)
573
if getattr(self, "disable_initiator_tag", False):
574
gobject.source_remove(self.disable_initiator_tag)
575
self.disable_initiator_tag = None
576
self.expires = None
577
if getattr(self, "checker_initiator_tag", False):
578
gobject.source_remove(self.checker_initiator_tag)
579
self.checker_initiator_tag = None
580
self.stop_checker()
581
self.enabled = False
582
# Do not run this again if called by a gobject.timeout_add
583
return False
584
585
def __del__(self):
586
self.disable()
587
588
def init_checker(self):
589
323
# Schedule a new checker to be started an 'interval' from now,
590
324
# and every interval from then on.
591
325
self.checker_initiator_tag = (gobject.timeout_add
595
329
self.disable_initiator_tag = (gobject.timeout_add
596
330
(self.timeout_milliseconds(),
597
331
self.disable))
332
self.enabled = True
598
333
# Also start a new checker *right now*.
599
334
self.start_checker()
600
335
336
def disable(self, quiet=True):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
if not quiet:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
347
self.checker_initiator_tag = None
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
351
self.enabled = False
352
# Do not run this again if called by a gobject.timeout_add
353
return False
354
355
def __del__(self):
356
self.disable_hook = None
357
self.disable()
358
601
359
def checker_callback(self, pid, condition, command):
602
360
"""The checker has completed, so take appropriate actions."""
603
361
self.checker_callback_tag = None
604
362
self.checker = None
605
363
if os.WIFEXITED(condition):
606
self.last_checker_status = os.WEXITSTATUS(condition)
607
if self.last_checker_status == 0:
608
logger.info("Checker for %(name)s succeeded",
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
609
367
vars(self))
610
368
self.checked_ok()
611
369
else:
612
logger.info("Checker for %(name)s failed",
370
logger.info(u"Checker for %(name)s failed",
613
371
vars(self))
614
372
else:
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
617
374
vars(self))
618
375
619
def checked_ok(self, timeout=None):
376
def checked_ok(self):
620
377
"""Bump up the timeout for this client.
621
378
622
379
This should only be called when the client has been seen,
623
380
alive and well.
624
381
"""
625
if timeout is None:
626
timeout = self.timeout
627
382
self.last_checked_ok = datetime.datetime.utcnow()
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
if getattr(self, "enabled", False):
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
634
self.expires = datetime.datetime.utcnow() + timeout
635
636
def need_approval(self):
637
self.last_approval_request = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
638
387
639
388
def start_checker(self):
640
389
"""Start a new checker subprocess if one is not running.
647
396
# client would inevitably timeout, since no checker would get
648
397
# a chance to run to completion. If we instead leave running
649
398
# checkers alone, the checker would have to take more time
650
# than 'timeout' for the client to be disabled, which is as it
651
# should be.
399
# than 'timeout' for the client to be declared invalid, which
400
# is as it should be.
652
401
653
402
# If a checker exists, make sure it is not a zombie
654
403
try:
655
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
656
except (AttributeError, OSError) as error:
405
except (AttributeError, OSError), error:
657
406
if (isinstance(error, OSError)
658
407
and error.errno != errno.ECHILD):
659
408
raise error
660
409
else:
661
410
if pid:
662
logger.warning("Checker was a zombie")
411
logger.warning(u"Checker was a zombie")
663
412
gobject.source_remove(self.checker_callback_tag)
664
413
self.checker_callback(pid, status,
665
414
self.current_checker_command)
670
419
command = self.checker_command % self.host
671
420
except TypeError:
672
421
# Escape attributes for the shell
673
escaped_attrs = dict(
674
(attr,
675
re.escape(unicode(str(getattr(self, attr, "")),
676
errors=
677
'replace')))
678
for attr in
679
self.runtime_expansions)
680
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
681
428
try:
682
429
command = self.checker_command % escaped_attrs
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
686
433
return True # Try again later
687
434
self.current_checker_command = command
688
435
try:
689
logger.info("Starting checker %r for %s",
436
logger.info(u"Starting checker %r for %s",
690
437
command, self.name)
691
438
# We don't need to redirect stdout and stderr, since
692
439
# in normal mode, that is already done by daemon(),
694
441
# always replaced by /dev/null.)
695
442
self.checker = subprocess.Popen(command,
696
443
close_fds=True,
697
shell=True, cwd="/")
444
shell=True, cwd=u"/")
698
445
self.checker_callback_tag = (gobject.child_watch_add
699
446
(self.checker.pid,
700
447
self.checker_callback,
705
452
if pid:
706
453
gobject.source_remove(self.checker_callback_tag)
707
454
self.checker_callback(pid, status, command)
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
710
457
error)
711
458
# Re-run this periodically if run by gobject.timeout_add
712
459
return True
716
463
if self.checker_callback_tag:
717
464
gobject.source_remove(self.checker_callback_tag)
718
465
self.checker_callback_tag = None
719
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
720
467
return
721
logger.debug("Stopping checker for %(name)s", vars(self))
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
469
try:
723
470
os.kill(self.checker.pid, signal.SIGTERM)
724
471
#time.sleep(0.5)
725
472
#if self.checker.poll() is None:
726
473
# os.kill(self.checker.pid, signal.SIGKILL)
727
except OSError as error:
474
except OSError, error:
728
475
if error.errno != errno.ESRCH: # No such process
729
476
raise
730
477
self.checker = None
731
732
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
478
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
482
return False
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
486
else:
487
return now < (self.last_checked_ok + self.timeout)
488
489
490
def dbus_service_property(dbus_interface, signature=u"v",
491
access=u"readwrite", byte_arrays=False):
735
492
"""Decorators for marking methods of a DBusObjectWithProperties to
736
493
become properties on the D-Bus.
737
494
742
499
dbus.service.method, except there is only "signature", since the
743
500
type from Get() and the type sent to Set() is the same.
744
501
"""
745
# Encoding deeply encoded byte arrays is not supported yet by the
746
# "Set" method, so we fail early here:
747
if byte_arrays and signature != "ay":
748
raise ValueError("Byte arrays not supported for non-'ay'"
749
" signature %r" % signature)
750
502
def decorator(func):
751
503
func._dbus_is_property = True
752
504
func._dbus_interface = dbus_interface
753
505
func._dbus_signature = signature
754
506
func._dbus_access = access
755
507
func._dbus_name = func.__name__
756
if func._dbus_name.endswith("_dbus_property"):
508
if func._dbus_name.endswith(u"_dbus_property"):
757
509
func._dbus_name = func._dbus_name[:-14]
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
510
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
511
return func
760
512
return decorator
761
513
781
533
782
534
class DBusObjectWithProperties(dbus.service.Object):
783
535
"""A D-Bus object with properties.
784
536
785
537
Classes inheriting from this can use the dbus_service_property
786
538
decorator to expose methods as D-Bus properties. It exposes the
787
539
standard Get(), Set(), and GetAll() methods on the D-Bus.
789
541
790
542
@staticmethod
791
543
def _is_dbus_property(obj):
792
return getattr(obj, "_dbus_is_property", False)
544
return getattr(obj, u"_dbus_is_property", False)
793
545
794
546
def _get_all_dbus_properties(self):
795
547
"""Returns a generator of (name, attribute) pairs
796
548
"""
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
549
return ((prop._dbus_name, prop)
799
550
for name, prop in
800
inspect.getmembers(cls, self._is_dbus_property))
551
inspect.getmembers(self, self._is_dbus_property))
801
552
802
553
def _get_dbus_property(self, interface_name, property_name):
803
554
"""Returns a bound method if one exists which is a D-Bus
804
555
property with the specified name and interface.
805
556
"""
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
809
if (value._dbus_name == property_name
810
and value._dbus_interface == interface_name):
811
return value.__get__(self)
812
557
for name in (property_name,
558
property_name + u"_dbus_property"):
559
prop = getattr(self, name, None)
560
if (prop is None
561
or not self._is_dbus_property(prop)
562
or prop._dbus_name != property_name
563
or (interface_name and prop._dbus_interface
564
and interface_name != prop._dbus_interface)):
565
continue
566
return prop
813
567
# No such property
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
816
570
+ property_name)
817
571
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
573
out_signature=u"v")
820
574
def Get(self, interface_name, property_name):
821
575
"""Standard D-Bus property Get() method, see D-Bus standard.
822
576
"""
823
577
prop = self._get_dbus_property(interface_name, property_name)
824
if prop._dbus_access == "write":
578
if prop._dbus_access == u"write":
825
579
raise DBusPropertyAccessException(property_name)
826
580
value = prop()
827
if not hasattr(value, "variant_level"):
581
if not hasattr(value, u"variant_level"):
828
582
return value
829
583
return type(value)(value, variant_level=value.variant_level+1)
830
584
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
586
def Set(self, interface_name, property_name, value):
833
587
"""Standard D-Bus property Set() method, see D-Bus standard.
834
588
"""
835
589
prop = self._get_dbus_property(interface_name, property_name)
836
if prop._dbus_access == "read":
590
if prop._dbus_access == u"read":
837
591
raise DBusPropertyAccessException(property_name)
838
if prop._dbus_get_args_options["byte_arrays"]:
839
# The byte_arrays option is not supported yet on
840
# signatures other than "ay".
841
if prop._dbus_signature != "ay":
842
raise ValueError
592
if prop._dbus_get_args_options[u"byte_arrays"]:
843
593
value = dbus.ByteArray(''.join(unichr(byte)
844
594
for byte in value))
845
595
prop(value)
846
596
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
849
599
def GetAll(self, interface_name):
850
600
"""Standard D-Bus property GetAll() method, see D-Bus
851
601
standard.
852
602
853
603
Note: Will not include properties with access="write".
854
604
"""
855
properties = {}
605
all = {}
856
606
for name, prop in self._get_all_dbus_properties():
857
607
if (interface_name
858
608
and interface_name != prop._dbus_interface):
859
609
# Interface non-empty but did not match
860
610
continue
861
611
# Ignore write-only properties
862
if prop._dbus_access == "write":
612
if prop._dbus_access == u"write":
863
613
continue
864
614
value = prop()
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
615
if not hasattr(value, u"variant_level"):
616
all[name] = value
867
617
continue
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
870
return dbus.Dictionary(properties, signature="sv")
618
all[name] = type(value)(value, variant_level=
619
value.variant_level+1)
620
return dbus.Dictionary(all, signature=u"sv")
871
621
872
622
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
873
out_signature="s",
623
out_signature=u"s",
874
624
path_keyword='object_path',
875
625
connection_keyword='connection')
876
626
def Introspect(self, object_path, connection):
881
631
try:
882
632
document = xml.dom.minidom.parseString(xmlstring)
883
633
def make_tag(document, name, prop):
884
e = document.createElement("property")
885
e.setAttribute("name", name)
886
e.setAttribute("type", prop._dbus_signature)
887
e.setAttribute("access", prop._dbus_access)
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
888
638
return e
889
for if_tag in document.getElementsByTagName("interface"):
639
for if_tag in document.getElementsByTagName(u"interface"):
890
640
for tag in (make_tag(document, name, prop)
891
641
for name, prop
892
642
in self._get_all_dbus_properties()
893
643
if prop._dbus_interface
894
== if_tag.getAttribute("name")):
644
== if_tag.getAttribute(u"name")):
895
645
if_tag.appendChild(tag)
896
646
# Add the names to the return values for the
897
647
# "org.freedesktop.DBus.Properties" methods
898
if (if_tag.getAttribute("name")
899
== "org.freedesktop.DBus.Properties"):
900
for cn in if_tag.getElementsByTagName("method"):
901
if cn.getAttribute("name") == "Get":
902
for arg in cn.getElementsByTagName("arg"):
903
if (arg.getAttribute("direction")
904
== "out"):
905
arg.setAttribute("name", "value")
906
elif cn.getAttribute("name") == "GetAll":
907
for arg in cn.getElementsByTagName("arg"):
908
if (arg.getAttribute("direction")
909
== "out"):
910
arg.setAttribute("name", "props")
911
xmlstring = document.toxml("utf-8")
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
654
== u"out"):
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
659
== u"out"):
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
912
662
document.unlink()
913
663
except (AttributeError, xml.dom.DOMException,
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
916
666
error)
917
667
return xmlstring
918
668
919
669
920
def datetime_to_dbus (dt, variant_level=0):
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
922
if dt is None:
923
return dbus.String("", variant_level = variant_level)
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
926
927
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
929
.__metaclass__):
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
932
"""
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
940
# Ignore non-D-Bus attributes, and D-Bus attributes
941
# with the wrong interface name
942
if (not hasattr(attribute, "_dbus_interface")
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
945
continue
946
# Create an alternate D-Bus interface name based on
947
# the current name
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
951
# Is this a D-Bus signal?
952
if getattr(attribute, "_dbus_is_signal", False):
953
# Extract the original non-method function by
954
# black magic
955
nonmethod_func = (dict(
956
zip(attribute.func_code.co_freevars,
957
attribute.__closure__))["func"]
958
.cell_contents)
959
# Create a new, but exactly alike, function
960
# object, and decorate it to be a new D-Bus signal
961
# with the alternate D-Bus interface name
962
new_function = (dbus.service.signal
963
(alt_interface,
964
attribute._dbus_signature)
965
(types.FunctionType(
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
971
# Define a creator of a function to call both the
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
974
def fixscope(func1, func2):
975
"""This function is a scope container to pass
976
func1 and func2 to the "call_both" function
977
outside of its arguments"""
978
def call_both(*args, **kwargs):
979
"""This function will emit two D-Bus
980
signals by calling func1 and func2"""
981
func1(*args, **kwargs)
982
func2(*args, **kwargs)
983
return call_both
984
# Create the "call_both" function and add it to
985
# the class
986
attr[attrname] = fixscope(attribute,
987
new_function)
988
# Is this a D-Bus method?
989
elif getattr(attribute, "_dbus_is_method", False):
990
# Create a new, but exactly alike, function
991
# object. Decorate it to be a new D-Bus method
992
# with the alternate D-Bus interface name. Add it
993
# to the class.
994
attr[attrname] = (dbus.service.method
995
(alt_interface,
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
998
(types.FunctionType
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1004
# Is this a D-Bus property?
1005
elif getattr(attribute, "_dbus_is_property", False):
1006
# Create a new, but exactly alike, function
1007
# object, and decorate it to be a new D-Bus
1008
# property with the alternate D-Bus interface
1009
# name. Add it to the class.
1010
attr[attrname] = (dbus_service_property
1011
(alt_interface,
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1014
attribute
1015
._dbus_get_args_options
1016
["byte_arrays"])
1017
(types.FunctionType
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
1024
1025
1026
670
class ClientDBus(Client, DBusObjectWithProperties):
1027
671
"""A Client class using D-Bus
1028
672
1030
674
dbus_object_path: dbus.ObjectPath
1031
675
bus: dbus.SystemBus()
1032
676
"""
1033
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
1036
1037
677
# dbus.service.Object doesn't use super(), so we can't either.
1038
678
1039
679
def __init__(self, bus = None, *args, **kwargs):
1040
680
self.bus = bus
1041
681
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
1045
682
# Only now, when this client is initialized, can it show up on
1046
683
# the D-Bus
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
1050
684
self.dbus_object_path = (dbus.ObjectPath
1051
("/clients/" + client_object_name))
685
(u"/clients/"
686
+ self.name.replace(u".", u"_")))
1052
687
DBusObjectWithProperties.__init__(self, self.bus,
1053
688
self.dbus_object_path)
1054
1055
def notifychangeproperty(transform_func,
1056
dbus_name, type_func=lambda x: x,
1057
variant_level=1):
1058
""" Modify a variable so that it's a property which announces
1059
its changes to DBus.
1060
1061
transform_fun: Function that takes a value and a variant_level
1062
and transforms it to a D-Bus type.
1063
dbus_name: D-Bus name of the variable
1064
type_func: Function that transform the value before sending it
1065
to the D-Bus. Default: no transform
1066
variant_level: D-Bus variant level. Default: 1
1067
"""
1068
attrname = "_{0}".format(dbus_name)
1069
def setter(self, value):
1070
if hasattr(self, "dbus_object_path"):
1071
if (not hasattr(self, attrname) or
1072
type_func(getattr(self, attrname, None))
1073
!= type_func(value)):
1074
dbus_value = transform_func(type_func(value),
1075
variant_level
1076
=variant_level)
1077
self.PropertyChanged(dbus.String(dbus_name),
1078
dbus_value)
1079
setattr(self, attrname, value)
1080
1081
return property(lambda self: getattr(self, attrname), setter)
1082
1083
1084
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1085
approvals_pending = notifychangeproperty(dbus.Boolean,
1086
"ApprovalPending",
1087
type_func = bool)
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1090
"LastEnabled")
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1095
"LastCheckedOK")
1096
last_approval_request = notifychangeproperty(
1097
datetime_to_dbus, "LastApprovalRequest")
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1099
"ApprovedByDefault")
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1101
"ApprovalDelay",
1102
type_func =
1103
timedelta_to_milliseconds)
1104
approval_duration = notifychangeproperty(
1105
dbus.UInt64, "ApprovalDuration",
1106
type_func = timedelta_to_milliseconds)
1107
host = notifychangeproperty(dbus.String, "Host")
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
extended_timeout = notifychangeproperty(
1112
dbus.UInt64, "ExtendedTimeout",
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1115
"Interval",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1119
1120
del notifychangeproperty
689
690
@staticmethod
691
def _datetime_to_dbus(dt, variant_level=0):
692
"""Convert a UTC datetime.datetime() to a D-Bus type."""
693
return dbus.String(dt.isoformat(),
694
variant_level=variant_level)
695
696
def enable(self):
697
oldstate = getattr(self, u"enabled", False)
698
r = Client.enable(self)
699
if oldstate != self.enabled:
700
# Emit D-Bus signals
701
self.PropertyChanged(dbus.String(u"enabled"),
702
dbus.Boolean(True, variant_level=1))
703
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
705
self._datetime_to_dbus(self.last_enabled,
706
variant_level=1))
707
return r
708
709
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, quiet=quiet)
712
if not quiet and oldstate != self.enabled:
713
# Emit D-Bus signal
714
self.PropertyChanged(dbus.String(u"enabled"),
715
dbus.Boolean(False, variant_level=1))
716
return r
1121
717
1122
718
def __del__(self, *args, **kwargs):
1123
719
try:
1124
720
self.remove_from_connection()
1125
721
except LookupError:
1126
722
pass
1127
if hasattr(DBusObjectWithProperties, "__del__"):
723
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
724
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1129
725
Client.__del__(self, *args, **kwargs)
1130
726
1132
728
*args, **kwargs):
1133
729
self.checker_callback_tag = None
1134
730
self.checker = None
731
# Emit D-Bus signal
732
self.PropertyChanged(dbus.String(u"checker_running"),
733
dbus.Boolean(False, variant_level=1))
1135
734
if os.WIFEXITED(condition):
1136
735
exitstatus = os.WEXITSTATUS(condition)
1137
736
# Emit D-Bus signal
1147
746
return Client.checker_callback(self, pid, condition, command,
1148
747
*args, **kwargs)
1149
748
749
def checked_ok(self, *args, **kwargs):
750
r = Client.checked_ok(self, *args, **kwargs)
751
# Emit D-Bus signal
752
self.PropertyChanged(
753
dbus.String(u"last_checked_ok"),
754
(self._datetime_to_dbus(self.last_checked_ok,
755
variant_level=1)))
756
return r
757
1150
758
def start_checker(self, *args, **kwargs):
1151
759
old_checker = self.checker
1152
760
if self.checker is not None:
1159
767
and old_checker_pid != self.checker.pid):
1160
768
# Emit D-Bus signal
1161
769
self.CheckerStarted(self.current_checker_command)
1162
return r
1163
1164
def _reset_approved(self):
1165
self.approved = None
1166
return False
1167
1168
def approve(self, value=True):
1169
self.send_changedstate()
1170
self.approved = value
1171
gobject.timeout_add(timedelta_to_milliseconds
1172
(self.approval_duration),
1173
self._reset_approved)
1174
1175
1176
## D-Bus methods, signals & properties
1177
_interface = "se.recompile.Mandos.Client"
1178
1179
## Signals
770
self.PropertyChanged(
771
dbus.String(u"checker_running"),
772
dbus.Boolean(True, variant_level=1))
773
return r
774
775
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
777
r = Client.stop_checker(self, *args, **kwargs)
778
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
781
dbus.Boolean(False, variant_level=1))
782
return r
783
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
786
787
# CheckedOK - method
788
@dbus.service.method(_interface)
789
def CheckedOK(self):
790
return self.checked_ok()
1180
791
1181
792
# CheckerCompleted - signal
1182
@dbus.service.signal(_interface, signature="nxs")
793
@dbus.service.signal(_interface, signature=u"nxs")
1183
794
def CheckerCompleted(self, exitcode, waitstatus, command):
1184
795
"D-Bus signal"
1185
796
pass
1186
797
1187
798
# CheckerStarted - signal
1188
@dbus.service.signal(_interface, signature="s")
799
@dbus.service.signal(_interface, signature=u"s")
1189
800
def CheckerStarted(self, command):
1190
801
"D-Bus signal"
1191
802
pass
1192
803
1193
804
# PropertyChanged - signal
1194
@dbus.service.signal(_interface, signature="sv")
805
@dbus.service.signal(_interface, signature=u"sv")
1195
806
def PropertyChanged(self, property, value):
1196
807
"D-Bus signal"
1197
808
pass
1199
810
# GotSecret - signal
1200
811
@dbus.service.signal(_interface)
1201
812
def GotSecret(self):
1202
"""D-Bus signal
1203
Is sent after a successful transfer of secret from the Mandos
1204
server to mandos-client
1205
"""
813
"D-Bus signal"
1206
814
pass
1207
815
1208
816
# Rejected - signal
1209
@dbus.service.signal(_interface, signature="s")
1210
def Rejected(self, reason):
1211
"D-Bus signal"
1212
pass
1213
1214
# NeedApproval - signal
1215
@dbus.service.signal(_interface, signature="tb")
1216
def NeedApproval(self, timeout, default):
1217
"D-Bus signal"
1218
return self.need_approval()
1219
1220
# NeRwequest - signal
1221
@dbus.service.signal(_interface, signature="s")
1222
def NewRequest(self, ip):
1223
"""D-Bus signal
1224
Is sent after a client request a password.
1225
"""
1226
pass
1227
1228
## Methods
1229
1230
# Approve - method
1231
@dbus.service.method(_interface, in_signature="b")
1232
def Approve(self, value):
1233
self.approve(value)
1234
1235
# CheckedOK - method
1236
@dbus.service.method(_interface)
1237
def CheckedOK(self):
1238
self.checked_ok()
817
@dbus.service.signal(_interface)
818
def Rejected(self):
819
"D-Bus signal"
820
pass
1239
821
1240
822
# Enable - method
1241
823
@dbus.service.method(_interface)
1260
842
def StopChecker(self):
1261
843
self.stop_checker()
1262
844
1263
## Properties
1264
1265
# ApprovalPending - property
1266
@dbus_service_property(_interface, signature="b", access="read")
1267
def ApprovalPending_dbus_property(self):
1268
return dbus.Boolean(bool(self.approvals_pending))
1269
1270
# ApprovedByDefault - property
1271
@dbus_service_property(_interface, signature="b",
1272
access="readwrite")
1273
def ApprovedByDefault_dbus_property(self, value=None):
1274
if value is None: # get
1275
return dbus.Boolean(self.approved_by_default)
1276
self.approved_by_default = bool(value)
1277
1278
# ApprovalDelay - property
1279
@dbus_service_property(_interface, signature="t",
1280
access="readwrite")
1281
def ApprovalDelay_dbus_property(self, value=None):
1282
if value is None: # get
1283
return dbus.UInt64(self.approval_delay_milliseconds())
1284
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1285
1286
# ApprovalDuration - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def ApprovalDuration_dbus_property(self, value=None):
1290
if value is None: # get
1291
return dbus.UInt64(timedelta_to_milliseconds(
1292
self.approval_duration))
1293
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1294
1295
# Name - property
1296
@dbus_service_property(_interface, signature="s", access="read")
1297
def Name_dbus_property(self):
845
# name - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
1298
848
return dbus.String(self.name)
1299
849
1300
# Fingerprint - property
1301
@dbus_service_property(_interface, signature="s", access="read")
1302
def Fingerprint_dbus_property(self):
850
# fingerprint - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
1303
853
return dbus.String(self.fingerprint)
1304
854
1305
# Host - property
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1308
def Host_dbus_property(self, value=None):
855
# host - property
856
@dbus_service_property(_interface, signature=u"s",
857
access=u"readwrite")
858
def host_dbus_property(self, value=None):
1309
859
if value is None: # get
1310
860
return dbus.String(self.host)
1311
self.host = unicode(value)
1312
1313
# Created - property
1314
@dbus_service_property(_interface, signature="s", access="read")
1315
def Created_dbus_property(self):
1316
return datetime_to_dbus(self.created)
1317
1318
# LastEnabled - property
1319
@dbus_service_property(_interface, signature="s", access="read")
1320
def LastEnabled_dbus_property(self):
1321
return datetime_to_dbus(self.last_enabled)
1322
1323
# Enabled - property
1324
@dbus_service_property(_interface, signature="b",
1325
access="readwrite")
1326
def Enabled_dbus_property(self, value=None):
861
self.host = value
862
# Emit D-Bus signal
863
self.PropertyChanged(dbus.String(u"host"),
864
dbus.String(value, variant_level=1))
865
866
# created - property
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
869
return dbus.String(self._datetime_to_dbus(self.created))
870
871
# last_enabled - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
874
if self.last_enabled is None:
875
return dbus.String(u"")
876
return dbus.String(self._datetime_to_dbus(self.last_enabled))
877
878
# enabled - property
879
@dbus_service_property(_interface, signature=u"b",
880
access=u"readwrite")
881
def enabled_dbus_property(self, value=None):
1327
882
if value is None: # get
1328
883
return dbus.Boolean(self.enabled)
1329
884
if value:
1331
886
else:
1332
887
self.disable()
1333
888
1334
# LastCheckedOK - property
1335
@dbus_service_property(_interface, signature="s",
1336
access="readwrite")
1337
def LastCheckedOK_dbus_property(self, value=None):
889
# last_checked_ok - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def last_checked_ok_dbus_property(self, value=None):
1338
893
if value is not None:
1339
894
self.checked_ok()
1340
895
return
1341
return datetime_to_dbus(self.last_checked_ok)
1342
1343
# Expires - property
1344
@dbus_service_property(_interface, signature="s", access="read")
1345
def Expires_dbus_property(self):
1346
return datetime_to_dbus(self.expires)
1347
1348
# LastApprovalRequest - property
1349
@dbus_service_property(_interface, signature="s", access="read")
1350
def LastApprovalRequest_dbus_property(self):
1351
return datetime_to_dbus(self.last_approval_request)
1352
1353
# Timeout - property
1354
@dbus_service_property(_interface, signature="t",
1355
access="readwrite")
1356
def Timeout_dbus_property(self, value=None):
896
if self.last_checked_ok is None:
897
return dbus.String(u"")
898
return dbus.String(self._datetime_to_dbus(self
899
.last_checked_ok))
900
901
# timeout - property
902
@dbus_service_property(_interface, signature=u"t",
903
access=u"readwrite")
904
def timeout_dbus_property(self, value=None):
1357
905
if value is None: # get
1358
906
return dbus.UInt64(self.timeout_milliseconds())
1359
907
self.timeout = datetime.timedelta(0, 0, 0, value)
1360
if getattr(self, "disable_initiator_tag", None) is None:
908
# Emit D-Bus signal
909
self.PropertyChanged(dbus.String(u"timeout"),
910
dbus.UInt64(value, variant_level=1))
911
if getattr(self, u"disable_initiator_tag", None) is None:
1361
912
return
1362
913
# Reschedule timeout
1363
914
gobject.source_remove(self.disable_initiator_tag)
1364
915
self.disable_initiator_tag = None
1365
self.expires = None
1366
time_to_die = timedelta_to_milliseconds((self
1367
.last_checked_ok
1368
+ self.timeout)
1369
- datetime.datetime
1370
.utcnow())
916
time_to_die = (self.
917
_timedelta_to_milliseconds((self
918
.last_checked_ok
919
+ self.timeout)
920
- datetime.datetime
921
.utcnow()))
1371
922
if time_to_die <= 0:
1372
923
# The timeout has passed
1373
924
self.disable()
1374
925
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
1378
926
self.disable_initiator_tag = (gobject.timeout_add
1379
927
(time_to_die, self.disable))
1380
928
1381
# ExtendedTimeout - property
1382
@dbus_service_property(_interface, signature="t",
1383
access="readwrite")
1384
def ExtendedTimeout_dbus_property(self, value=None):
1385
if value is None: # get
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1388
1389
# Interval - property
1390
@dbus_service_property(_interface, signature="t",
1391
access="readwrite")
1392
def Interval_dbus_property(self, value=None):
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
931
access=u"readwrite")
932
def interval_dbus_property(self, value=None):
1393
933
if value is None: # get
1394
934
return dbus.UInt64(self.interval_milliseconds())
1395
935
self.interval = datetime.timedelta(0, 0, 0, value)
1396
if getattr(self, "checker_initiator_tag", None) is None:
936
# Emit D-Bus signal
937
self.PropertyChanged(dbus.String(u"interval"),
938
dbus.UInt64(value, variant_level=1))
939
if getattr(self, u"checker_initiator_tag", None) is None:
1397
940
return
1398
if self.enabled:
1399
# Reschedule checker run
1400
gobject.source_remove(self.checker_initiator_tag)
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1404
1405
# Checker - property
1406
@dbus_service_property(_interface, signature="s",
1407
access="readwrite")
1408
def Checker_dbus_property(self, value=None):
941
# Reschedule checker run
942
gobject.source_remove(self.checker_initiator_tag)
943
self.checker_initiator_tag = (gobject.timeout_add
944
(value, self.start_checker))
945
self.start_checker() # Start one now, too
946
947
# checker - property
948
@dbus_service_property(_interface, signature=u"s",
949
access=u"readwrite")
950
def checker_dbus_property(self, value=None):
1409
951
if value is None: # get
1410
952
return dbus.String(self.checker_command)
1411
self.checker_command = unicode(value)
953
self.checker_command = value
954
# Emit D-Bus signal
955
self.PropertyChanged(dbus.String(u"checker"),
956
dbus.String(self.checker_command,
957
variant_level=1))
1412
958
1413
# CheckerRunning - property
1414
@dbus_service_property(_interface, signature="b",
1415
access="readwrite")
1416
def CheckerRunning_dbus_property(self, value=None):
959
# checker_running - property
960
@dbus_service_property(_interface, signature=u"b",
961
access=u"readwrite")
962
def checker_running_dbus_property(self, value=None):
1417
963
if value is None: # get
1418
964
return dbus.Boolean(self.checker is not None)
1419
965
if value:
1421
967
else:
1422
968
self.stop_checker()
1423
969
1424
# ObjectPath - property
1425
@dbus_service_property(_interface, signature="o", access="read")
1426
def ObjectPath_dbus_property(self):
970
# object_path - property
971
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
1427
973
return self.dbus_object_path # is already a dbus.ObjectPath
1428
974
1429
# Secret = property
1430
@dbus_service_property(_interface, signature="ay",
1431
access="write", byte_arrays=True)
1432
def Secret_dbus_property(self, value):
975
# secret = property
976
@dbus_service_property(_interface, signature=u"ay",
977
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
1433
979
self.secret = str(value)
1434
980
1435
981
del _interface
1436
982
1437
983
1438
class ProxyClient(object):
1439
def __init__(self, child_pipe, fpr, address):
1440
self._pipe = child_pipe
1441
self._pipe.send(('init', fpr, address))
1442
if not self._pipe.recv():
1443
raise KeyError()
1444
1445
def __getattribute__(self, name):
1446
if name == '_pipe':
1447
return super(ProxyClient, self).__getattribute__(name)
1448
self._pipe.send(('getattr', name))
1449
data = self._pipe.recv()
1450
if data[0] == 'data':
1451
return data[1]
1452
if data[0] == 'function':
1453
def func(*args, **kwargs):
1454
self._pipe.send(('funcall', name, args, kwargs))
1455
return self._pipe.recv()[1]
1456
return func
1457
1458
def __setattr__(self, name, value):
1459
if name == '_pipe':
1460
return super(ProxyClient, self).__setattr__(name, value)
1461
self._pipe.send(('setattr', name, value))
1462
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
1468
984
class ClientHandler(socketserver.BaseRequestHandler, object):
1469
985
"""A class to handle client connections.
1470
986
1472
988
Note: This will run in its own forked process."""
1473
989
1474
990
def handle(self):
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1476
logger.info("TCP connection from: %s",
1477
unicode(self.client_address))
1478
logger.debug("Pipe FD: %d",
1479
self.server.child_pipe.fileno())
1480
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1481
996
session = (gnutls.connection
1482
997
.ClientSession(self.request,
1483
998
gnutls.connection
1484
999
.X509Credentials()))
1485
1000
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1003
try:
1004
if int(line.strip().split()[0]) > 1:
1005
raise RuntimeError
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1008
return
1009
1486
1010
# Note: gnutls.connection.X509Credentials is really a
1487
1011
# generic GnuTLS certificate credentials object so long as
1488
1012
# no X.509 keys are added to it. Therefore, we can use it
1489
1013
# here despite using OpenPGP certificates.
1490
1014
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1018
# u"+DHE-DSS"))
1495
1019
# Use a fallback default, since this MUST be set.
1496
1020
priority = self.server.gnutls_priority
1497
1021
if priority is None:
1498
priority = "NORMAL"
1022
priority = u"NORMAL"
1499
1023
(gnutls.library.functions
1500
1024
.gnutls_priority_set_direct(session._c_object,
1501
1025
priority, None))
1502
1026
1503
# Start communication using the Mandos protocol
1504
# Get protocol number
1505
line = self.request.makefile().readline()
1506
logger.debug("Protocol version: %r", line)
1507
try:
1508
if int(line.strip().split()[0]) > 1:
1509
raise RuntimeError
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1512
return
1513
1514
# Start GnuTLS connection
1515
1027
try:
1516
1028
session.handshake()
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
1519
1031
# Do not run session.bye() here: the session is not
1520
1032
# established. Just abandon the request.
1521
1033
return
1522
logger.debug("Handshake succeeded")
1523
1524
approval_required = False
1034
logger.debug(u"Handshake succeeded")
1525
1035
try:
1526
try:
1527
fpr = self.fingerprint(self.peer_certificate
1528
(session))
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1532
return
1533
logger.debug("Fingerprint: %s", fpr)
1534
1535
try:
1536
client = ProxyClient(child_pipe, fpr,
1537
self.client_address)
1538
except KeyError:
1539
return
1540
1541
if self.server.use_dbus:
1542
# Emit D-Bus signal
1543
client.NewRequest(str(self.client_address))
1544
1545
if client.approval_delay:
1546
delay = client.approval_delay
1547
client.approvals_pending += 1
1548
approval_required = True
1549
1550
while True:
1551
if not client.enabled:
1552
logger.info("Client %s is disabled",
1553
client.name)
1554
if self.server.use_dbus:
1555
# Emit D-Bus signal
1556
client.Rejected("Disabled")
1557
return
1558
1559
if client.approved or not client.approval_delay:
1560
#We are approved or approval is disabled
1561
break
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1564
client.name)
1565
if self.server.use_dbus:
1566
# Emit D-Bus signal
1567
client.NeedApproval(
1568
client.approval_delay_milliseconds(),
1569
client.approved_by_default)
1570
else:
1571
logger.warning("Client %s was not approved",
1572
client.name)
1573
if self.server.use_dbus:
1574
# Emit D-Bus signal
1575
client.Rejected("Denied")
1576
return
1577
1578
#wait until timeout or approved
1579
time = datetime.datetime.now()
1580
client.changedstate.acquire()
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1584
client.changedstate.release()
1585
time2 = datetime.datetime.now()
1586
if (time2 - time) >= delay:
1587
if not client.approved_by_default:
1588
logger.warning("Client %s timed out while"
1589
" waiting for approval",
1590
client.name)
1591
if self.server.use_dbus:
1592
# Emit D-Bus signal
1593
client.Rejected("Approval timed out")
1594
return
1595
else:
1596
break
1597
else:
1598
delay -= time2 - time
1599
1600
sent_size = 0
1601
while sent_size < len(client.secret):
1602
try:
1603
sent = session.send(client.secret[sent_size:])
1604
except gnutls.errors.GNUTLSError as error:
1605
logger.warning("gnutls send failed")
1606
return
1607
logger.debug("Sent: %d, remaining: %d",
1608
sent, len(client.secret)
1609
- (sent_size + sent))
1610
sent_size += sent
1611
1612
logger.info("Sending secret to %s", client.name)
1613
# bump the timeout using extended_timeout
1614
client.checked_ok(client.extended_timeout)
1615
if self.server.use_dbus:
1616
# Emit D-Bus signal
1617
client.GotSecret()
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1039
session.bye()
1040
return
1041
logger.debug(u"Fingerprint: %s", fpr)
1618
1042
1619
finally:
1620
if approval_required:
1621
client.approvals_pending -= 1
1622
try:
1623
session.bye()
1624
except gnutls.errors.GNUTLSError as error:
1625
logger.warning("GnuTLS bye failed")
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1045
client = c
1046
break
1047
else:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1050
session.bye()
1051
return
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1057
session.bye()
1058
return
1059
ipc.write(u"SENDING %s\n" % client.name)
1060
sent_size = 0
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
1066
sent_size += sent
1067
session.bye()
1626
1068
1627
1069
@staticmethod
1628
1070
def peer_certificate(session):
1638
1080
.gnutls_certificate_get_peers
1639
1081
(session._c_object, ctypes.byref(list_size)))
1640
1082
if not bool(cert_list) and list_size.value != 0:
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1083
raise gnutls.errors.GNUTLSError(u"error getting peer"
1084
u" certificate")
1643
1085
if list_size.value == 0:
1644
1086
return None
1645
1087
cert = cert_list[0]
1671
1113
if crtverify.value != 0:
1672
1114
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1673
1115
raise (gnutls.errors.CertificateSecurityError
1674
("Verify failed"))
1116
(u"Verify failed"))
1675
1117
# New buffer for the fingerprint
1676
1118
buf = ctypes.create_string_buffer(20)
1677
1119
buf_len = ctypes.c_size_t()
1684
1126
# Convert the buffer to a Python bytestring
1685
1127
fpr = ctypes.string_at(buf, buf_len.value)
1686
1128
# Convert the bytestring to hexadecimal notation
1687
hex_fpr = binascii.hexlify(fpr).upper()
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
1130
return hex_fpr
1689
1131
1690
1132
1691
class MultiprocessingMixIn(object):
1692
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1693
def sub_process_main(self, request, address):
1694
try:
1695
self.finish_request(request, address)
1696
except Exception:
1697
self.handle_error(request, address)
1698
self.close_request(request)
1699
1700
def process_request(self, request, address):
1701
"""Start a new process to process the request."""
1702
proc = multiprocessing.Process(target = self.sub_process_main,
1703
args = (request,
1704
address))
1705
proc.start()
1706
return proc
1707
1708
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1710
""" adds a pipe to the MixIn """
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1711
1135
def process_request(self, request, client_address):
1712
1136
"""Overrides and wraps the original process_request().
1713
1137
1714
1138
This function creates a new pipe in self.pipe
1715
1139
"""
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1720
self.child_pipe.close()
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1142
self).process_request(request, client_address)
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
1724
1146
"""Dummy function; override as necessary"""
1725
raise NotImplementedError
1726
1727
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1147
os.close(pipe)
1148
1149
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1729
1151
socketserver.TCPServer, object):
1730
1152
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1731
1153
1747
1169
bind to an address or port if they were not specified."""
1748
1170
if self.interface is not None:
1749
1171
if SO_BINDTODEVICE is None:
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1172
logger.error(u"SO_BINDTODEVICE does not exist;"
1173
u" cannot bind to interface %s",
1752
1174
self.interface)
1753
1175
else:
1754
1176
try:
1755
1177
self.socket.setsockopt(socket.SOL_SOCKET,
1756
1178
SO_BINDTODEVICE,
1757
1179
str(self.interface
1758
+ '\0'))
1759
except socket.error as error:
1180
+ u'\0'))
1181
except socket.error, error:
1760
1182
if error[0] == errno.EPERM:
1761
logger.error("No permission to"
1762
" bind to interface %s",
1183
logger.error(u"No permission to"
1184
u" bind to interface %s",
1763
1185
self.interface)
1764
1186
elif error[0] == errno.ENOPROTOOPT:
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1187
logger.error(u"SO_BINDTODEVICE not available;"
1188
u" cannot bind to interface %s",
1767
1189
self.interface)
1768
1190
else:
1769
1191
raise
1771
1193
if self.server_address[0] or self.server_address[1]:
1772
1194
if not self.server_address[0]:
1773
1195
if self.address_family == socket.AF_INET6:
1774
any_address = "::" # in6addr_any
1196
any_address = u"::" # in6addr_any
1775
1197
else:
1776
1198
any_address = socket.INADDR_ANY
1777
1199
self.server_address = (any_address,
1804
1226
self.enabled = False
1805
1227
self.clients = clients
1806
1228
if self.clients is None:
1807
self.clients = {}
1229
self.clients = set()
1808
1230
self.use_dbus = use_dbus
1809
1231
self.gnutls_priority = gnutls_priority
1810
1232
IPv6_TCPServer.__init__(self, server_address,
1814
1236
def server_activate(self):
1815
1237
if self.enabled:
1816
1238
return socketserver.TCPServer.server_activate(self)
1817
1818
1239
def enable(self):
1819
1240
self.enabled = True
1820
1821
def add_pipe(self, parent_pipe, proc):
1241
def add_pipe(self, pipe):
1822
1242
# Call "handle_ipc" for both data and EOF events
1823
gobject.io_add_watch(parent_pipe.fileno(),
1824
gobject.IO_IN | gobject.IO_HUP,
1825
functools.partial(self.handle_ipc,
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1831
proc = None, client_object=None):
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1244
self.handle_ipc)
1245
def handle_ipc(self, source, condition, file_objects={}):
1832
1246
condition_names = {
1833
gobject.IO_IN: "IN", # There is data to read.
1834
gobject.IO_OUT: "OUT", # Data can be written (without
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1835
1249
# blocking).
1836
gobject.IO_PRI: "PRI", # There is urgent data to read.
1837
gobject.IO_ERR: "ERR", # Error condition.
1838
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1250
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1251
gobject.IO_ERR: u"ERR", # Error condition.
1252
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1839
1253
# broken, usually for pipes and
1840
1254
# sockets).
1841
1255
}
1843
1257
for cond, name in
1844
1258
condition_names.iteritems()
1845
1259
if cond & condition)
1846
# error, or the other end of multiprocessing.Pipe has closed
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1850
return False
1851
1852
# Read a request from the child
1853
request = parent_pipe.recv()
1854
command = request[0]
1855
1856
if command == 'init':
1857
fpr = request[1]
1858
address = request[2]
1859
1860
for c in self.clients.itervalues():
1861
if c.fingerprint == fpr:
1862
client = c
1863
break
1864
else:
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1867
if self.use_dbus:
1868
# Emit D-Bus signal
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1871
parent_pipe.send(False)
1872
return False
1873
1874
gobject.io_add_watch(parent_pipe.fileno(),
1875
gobject.IO_IN | gobject.IO_HUP,
1876
functools.partial(self.handle_ipc,
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1882
parent_pipe.send(True)
1883
# remove the old hook in favor of the new above hook on
1884
# same fileno
1885
return False
1886
if command == 'funcall':
1887
funcname = request[1]
1888
args = request[2]
1889
kwargs = request[3]
1890
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1895
if command == 'getattr':
1896
attrname = request[1]
1897
if callable(client_object.__getattribute__(attrname)):
1898
parent_pipe.send(('function',))
1899
else:
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1902
1903
if command == 'setattr':
1904
attrname = request[1]
1905
value = request[2]
1906
setattr(client_object, attrname, value)
1907
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1261
conditions_string)
1262
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1266
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1273
1274
# Stop calling this function
1275
return False
1276
1277
logger.debug(u"IPC command: %r", cmdline)
1278
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1281
1282
if cmd == u"NOTFOUND":
1283
fpr, address = args.split(None, 1)
1284
logger.warning(u"Client not found for fingerprint: %s, ad"
1285
u"dress: %s", fpr, address)
1286
if self.use_dbus:
1287
# Emit D-Bus signal
1288
mandos_dbus_service.ClientNotFound(fpr, address)
1289
elif cmd == u"INVALID":
1290
for client in self.clients:
1291
if client.name == args:
1292
logger.warning(u"Client %s is invalid", args)
1293
if self.use_dbus:
1294
# Emit D-Bus signal
1295
client.Rejected()
1296
break
1297
else:
1298
logger.error(u"Unknown client %s is invalid", args)
1299
elif cmd == u"SENDING":
1300
for client in self.clients:
1301
if client.name == args:
1302
logger.info(u"Sending secret to %s", client.name)
1303
client.checked_ok()
1304
if self.use_dbus:
1305
# Emit D-Bus signal
1306
client.GotSecret()
1307
break
1308
else:
1309
logger.error(u"Sending secret to unknown client %s",
1310
args)
1311
else:
1312
logger.error(u"Unknown IPC command: %r", cmdline)
1313
1314
# Keep calling this function
1908
1315
return True
1909
1316
1910
1317
1911
1318
def string_to_delta(interval):
1912
1319
"""Parse a string and return a datetime.timedelta
1913
1320
1914
>>> string_to_delta('7d')
1321
>>> string_to_delta(u'7d')
1915
1322
datetime.timedelta(7)
1916
>>> string_to_delta('60s')
1323
>>> string_to_delta(u'60s')
1917
1324
datetime.timedelta(0, 60)
1918
>>> string_to_delta('60m')
1325
>>> string_to_delta(u'60m')
1919
1326
datetime.timedelta(0, 3600)
1920
>>> string_to_delta('24h')
1327
>>> string_to_delta(u'24h')
1921
1328
datetime.timedelta(1)
1922
>>> string_to_delta('1w')
1329
>>> string_to_delta(u'1w')
1923
1330
datetime.timedelta(7)
1924
>>> string_to_delta('5m 30s')
1331
>>> string_to_delta(u'5m 30s')
1925
1332
datetime.timedelta(0, 330)
1926
1333
"""
1927
1334
timevalue = datetime.timedelta(0)
1929
1336
try:
1930
1337
suffix = unicode(s[-1])
1931
1338
value = int(s[:-1])
1932
if suffix == "d":
1339
if suffix == u"d":
1933
1340
delta = datetime.timedelta(value)
1934
elif suffix == "s":
1341
elif suffix == u"s":
1935
1342
delta = datetime.timedelta(0, value)
1936
elif suffix == "m":
1343
elif suffix == u"m":
1937
1344
delta = datetime.timedelta(0, 0, 0, 0, value)
1938
elif suffix == "h":
1345
elif suffix == u"h":
1939
1346
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1940
elif suffix == "w":
1347
elif suffix == u"w":
1941
1348
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1942
1349
else:
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1350
raise ValueError(u"Unknown suffix %r" % suffix)
1351
except (ValueError, IndexError), e:
1352
raise ValueError(e.message)
1946
1353
timevalue += delta
1947
1354
return timevalue
1948
1355
1949
1356
1357
def if_nametoindex(interface):
1358
"""Call the C function if_nametoindex(), or equivalent
1359
1360
Note: This function cannot accept a unicode string."""
1361
global if_nametoindex
1362
try:
1363
if_nametoindex = (ctypes.cdll.LoadLibrary
1364
(ctypes.util.find_library(u"c"))
1365
.if_nametoindex)
1366
except (OSError, AttributeError):
1367
logger.warning(u"Doing if_nametoindex the hard way")
1368
def if_nametoindex(interface):
1369
"Get an interface index the hard way, i.e. using fcntl()"
1370
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1371
with closing(socket.socket()) as s:
1372
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1373
struct.pack(str(u"16s16x"),
1374
interface))
1375
interface_index = struct.unpack(str(u"I"),
1376
ifreq[16:20])[0]
1377
return interface_index
1378
return if_nametoindex(interface)
1379
1380
1950
1381
def daemon(nochdir = False, noclose = False):
1951
1382
"""See daemon(3). Standard BSD Unix function.
1952
1383
1955
1386
sys.exit()
1956
1387
os.setsid()
1957
1388
if not nochdir:
1958
os.chdir("/")
1389
os.chdir(u"/")
1959
1390
if os.fork():
1960
1391
sys.exit()
1961
1392
if not noclose:
1963
1394
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1964
1395
if not stat.S_ISCHR(os.fstat(null).st_mode):
1965
1396
raise OSError(errno.ENODEV,
1966
"%s not a character device"
1397
u"%s not a character device"
1967
1398
% os.path.devnull)
1968
1399
os.dup2(null, sys.stdin.fileno())
1969
1400
os.dup2(null, sys.stdout.fileno())
1977
1408
##################################################################
1978
1409
# Parsing of options, both command line and config file
1979
1410
1980
parser = argparse.ArgumentParser()
1981
parser.add_argument("-v", "--version", action="version",
1982
version = "%%(prog)s %s" % version,
1983
help="show version number and exit")
1984
parser.add_argument("-i", "--interface", metavar="IF",
1985
help="Bind to interface IF")
1986
parser.add_argument("-a", "--address",
1987
help="Address to listen for requests on")
1988
parser.add_argument("-p", "--port", type=int,
1989
help="Port number to receive requests on")
1990
parser.add_argument("--check", action="store_true",
1991
help="Run self-test")
1992
parser.add_argument("--debug", action="store_true",
1993
help="Debug mode; run in foreground and log"
1994
" to terminal")
1995
parser.add_argument("--debuglevel", metavar="LEVEL",
1996
help="Debug level for stdout output")
1997
parser.add_argument("--priority", help="GnuTLS"
1998
" priority string (see GnuTLS documentation)")
1999
parser.add_argument("--servicename",
2000
metavar="NAME", help="Zeroconf service name")
2001
parser.add_argument("--configdir",
2002
default="/etc/mandos", metavar="DIR",
2003
help="Directory to search for configuration"
2004
" files")
2005
parser.add_argument("--no-dbus", action="store_false",
2006
dest="use_dbus", help="Do not provide D-Bus"
2007
" system bus interface")
2008
parser.add_argument("--no-ipv6", action="store_false",
2009
dest="use_ipv6", help="Do not use IPv6")
2010
parser.add_argument("--no-restore", action="store_false",
2011
dest="restore", help="Do not restore stored"
2012
" state")
2013
parser.add_argument("--statedir", metavar="DIR",
2014
help="Directory to save/restore state in")
2015
2016
options = parser.parse_args()
1411
parser = optparse.OptionParser(version = "%%prog %s" % version)
1412
parser.add_option("-i", u"--interface", type=u"string",
1413
metavar="IF", help=u"Bind to interface IF")
1414
parser.add_option("-a", u"--address", type=u"string",
1415
help=u"Address to listen for requests on")
1416
parser.add_option("-p", u"--port", type=u"int",
1417
help=u"Port number to receive requests on")
1418
parser.add_option("--check", action=u"store_true",
1419
help=u"Run self-test")
1420
parser.add_option("--debug", action=u"store_true",
1421
help=u"Debug mode; run in foreground and log to"
1422
u" terminal")
1423
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1424
u" priority string (see GnuTLS documentation)")
1425
parser.add_option("--servicename", type=u"string",
1426
metavar=u"NAME", help=u"Zeroconf service name")
1427
parser.add_option("--configdir", type=u"string",
1428
default=u"/etc/mandos", metavar=u"DIR",
1429
help=u"Directory to search for configuration"
1430
u" files")
1431
parser.add_option("--no-dbus", action=u"store_false",
1432
dest=u"use_dbus", help=u"Do not provide D-Bus"
1433
u" system bus interface")
1434
parser.add_option("--no-ipv6", action=u"store_false",
1435
dest=u"use_ipv6", help=u"Do not use IPv6")
1436
options = parser.parse_args()[0]
2017
1437
2018
1438
if options.check:
2019
1439
import doctest
2021
1441
sys.exit()
2022
1442
2023
1443
# Default values for config file for server-global settings
2024
server_defaults = { "interface": "",
2025
"address": "",
2026
"port": "",
2027
"debug": "False",
2028
"priority":
2029
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2030
"servicename": "Mandos",
2031
"use_dbus": "True",
2032
"use_ipv6": "True",
2033
"debuglevel": "",
2034
"restore": "True",
2035
"statedir": "/var/lib/mandos"
1444
server_defaults = { u"interface": u"",
1445
u"address": u"",
1446
u"port": u"",
1447
u"debug": u"False",
1448
u"priority":
1449
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1450
u"servicename": u"Mandos",
1451
u"use_dbus": u"True",
1452
u"use_ipv6": u"True",
2036
1453
}
2037
1454
2038
1455
# Parse config file for server-global settings
2039
1456
server_config = configparser.SafeConfigParser(server_defaults)
2040
1457
del server_defaults
2041
1458
server_config.read(os.path.join(options.configdir,
2042
"mandos.conf"))
1459
u"mandos.conf"))
2043
1460
# Convert the SafeConfigParser object to a dict
2044
1461
server_settings = server_config.defaults()
2045
1462
# Use the appropriate methods on the non-string config options
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2047
server_settings[option] = server_config.getboolean("DEFAULT",
1463
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1464
server_settings[option] = server_config.getboolean(u"DEFAULT",
2048
1465
option)
2049
1466
if server_settings["port"]:
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1467
server_settings["port"] = server_config.getint(u"DEFAULT",
1468
u"port")
2052
1469
del server_config
2053
1470
2054
1471
# Override the settings from the config file with command line
2055
1472
# options, if set.
2056
for option in ("interface", "address", "port", "debug",
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2059
"statedir"):
1473
for option in (u"interface", u"address", u"port", u"debug",
1474
u"priority", u"servicename", u"configdir",
1475
u"use_dbus", u"use_ipv6"):
2060
1476
value = getattr(options, option)
2061
1477
if value is not None:
2062
1478
server_settings[option] = value
2070
1486
##################################################################
2071
1487
2072
1488
# For convenience
2073
debug = server_settings["debug"]
2074
debuglevel = server_settings["debuglevel"]
2075
use_dbus = server_settings["use_dbus"]
2076
use_ipv6 = server_settings["use_ipv6"]
2077
stored_state_path = os.path.join(server_settings["statedir"],
2078
stored_state_file)
2079
2080
if debug:
2081
initlogger(logging.DEBUG)
2082
else:
2083
if not debuglevel:
2084
initlogger()
2085
else:
2086
level = getattr(logging, debuglevel.upper())
2087
initlogger(level)
2088
2089
if server_settings["servicename"] != "Mandos":
1489
debug = server_settings[u"debug"]
1490
use_dbus = server_settings[u"use_dbus"]
1491
use_ipv6 = server_settings[u"use_ipv6"]
1492
1493
if not debug:
1494
syslogger.setLevel(logging.WARNING)
1495
console.setLevel(logging.WARNING)
1496
1497
if server_settings[u"servicename"] != u"Mandos":
2090
1498
syslogger.setFormatter(logging.Formatter
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1499
(u'Mandos (%s) [%%(process)d]:'
1500
u' %%(levelname)s: %%(message)s'
1501
% server_settings[u"servicename"]))
2094
1502
2095
1503
# Parse config file with clients
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1504
client_defaults = { u"timeout": u"1h",
1505
u"interval": u"5m",
1506
u"checker": u"fping -q -- %%(host)s",
1507
u"host": u"",
1508
}
1509
client_config = configparser.SafeConfigParser(client_defaults)
1510
client_config.read(os.path.join(server_settings[u"configdir"],
1511
u"clients.conf"))
2099
1512
2100
1513
global mandos_dbus_service
2101
1514
mandos_dbus_service = None
2102
1515
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1516
tcp_server = MandosServer((server_settings[u"address"],
1517
server_settings[u"port"]),
2105
1518
ClientHandler,
2106
interface=(server_settings["interface"]
2107
or None),
1519
interface=server_settings[u"interface"],
2108
1520
use_ipv6=use_ipv6,
2109
1521
gnutls_priority=
2110
server_settings["priority"],
1522
server_settings[u"priority"],
2111
1523
use_dbus=use_dbus)
2112
if not debug:
2113
pidfilename = "/var/run/mandos.pid"
2114
try:
2115
pidfile = open(pidfilename, "w")
2116
except IOError:
2117
logger.error("Could not open file %r", pidfilename)
1524
pidfilename = u"/var/run/mandos.pid"
1525
try:
1526
pidfile = open(pidfilename, u"w")
1527
except IOError:
1528
logger.error(u"Could not open file %r", pidfilename)
2118
1529
2119
1530
try:
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1531
uid = pwd.getpwnam(u"_mandos").pw_uid
1532
gid = pwd.getpwnam(u"_mandos").pw_gid
2122
1533
except KeyError:
2123
1534
try:
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1535
uid = pwd.getpwnam(u"mandos").pw_uid
1536
gid = pwd.getpwnam(u"mandos").pw_gid
2126
1537
except KeyError:
2127
1538
try:
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1539
uid = pwd.getpwnam(u"nobody").pw_uid
1540
gid = pwd.getpwnam(u"nobody").pw_gid
2130
1541
except KeyError:
2131
1542
uid = 65534
2132
1543
gid = 65534
2133
1544
try:
2134
1545
os.setgid(gid)
2135
1546
os.setuid(uid)
2136
except OSError as error:
1547
except OSError, error:
2137
1548
if error[0] != errno.EPERM:
2138
1549
raise error
2139
1550
1551
# Enable all possible GnuTLS debugging
2140
1552
if debug:
2141
# Enable all possible GnuTLS debugging
2142
2143
1553
# "Use a log level over 10 to enable all debugging options."
2144
1554
# - GnuTLS manual
2145
1555
gnutls.library.functions.gnutls_global_set_log_level(11)
2146
1556
2147
1557
@gnutls.library.types.gnutls_log_func
2148
1558
def debug_gnutls(level, string):
2149
logger.debug("GnuTLS: %s", string[:-1])
1559
logger.debug(u"GnuTLS: %s", string[:-1])
2150
1560
2151
1561
(gnutls.library.functions
2152
1562
.gnutls_global_set_log_function(debug_gnutls))
2153
2154
# Redirect stdin so all checkers get /dev/null
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2156
os.dup2(null, sys.stdin.fileno())
2157
if null > 2:
2158
os.close(null)
2159
else:
2160
# No console logging
2161
logger.removeHandler(console)
2162
2163
# Need to fork before connecting to D-Bus
2164
if not debug:
2165
# Close all input and output, do double fork, etc.
2166
daemon()
2167
1563
2168
1564
global main_loop
2169
1565
# From the Avahi example code
2173
1569
# End of Avahi example code
2174
1570
if use_dbus:
2175
1571
try:
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1572
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2177
1573
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
1574
except dbus.exceptions.NameExistsException, e:
1575
logger.error(unicode(e) + u", disabling D-Bus")
2183
1576
use_dbus = False
2184
server_settings["use_dbus"] = False
1577
server_settings[u"use_dbus"] = False
2185
1578
tcp_server.use_dbus = False
2186
1579
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1580
service = AvahiService(name = server_settings[u"servicename"],
1581
servicetype = u"_mandos._tcp",
1582
protocol = protocol, bus = bus)
2191
1583
if server_settings["interface"]:
2192
1584
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
2194
2195
global multiprocessing_manager
2196
multiprocessing_manager = multiprocessing.Manager()
1585
(str(server_settings[u"interface"])))
2197
1586
2198
1587
client_class = Client
2199
1588
if use_dbus:
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2205
clients_data = {}
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
2220
with PGPEngine() as pgp:
2221
for client_name, client in clients_data.iteritems():
2222
# Decide which value to use after restoring saved state.
2223
# We have three different values: Old config file,
2224
# new config file, and saved state.
2225
# New config value takes precedence if it differs from old
2226
# config value, otherwise use saved state.
2227
for name, value in client_settings[client_name].items():
2228
try:
2229
# For each value in new config, check if it
2230
# differs from the old config value (Except for
2231
# the "secret" attribute)
2232
if (name != "secret" and
2233
value != old_client_settings[client_name]
2234
[name]):
2235
client[name] = value
2236
except KeyError:
2237
pass
2238
2239
# Clients who has passed its expire date can still be
2240
# enabled if its last checker was successful. Clients
2241
# whose checker failed before we stored its state is
2242
# assumed to have failed all checkers during downtime.
2243
if client["enabled"]:
2244
if datetime.datetime.utcnow() >= client["expires"]:
2245
if not client["last_checked_ok"]:
2246
logger.warning(
2247
"disabling client {0} - Client never "
2248
"performed a successfull checker"
2249
.format(client["name"]))
2250
client["enabled"] = False
2251
elif client["last_checker_status"] != 0:
2252
logger.warning(
2253
"disabling client {0} - Client "
2254
"last checker failed with error code {1}"
2255
.format(client["name"],
2256
client["last_checker_status"]))
2257
client["enabled"] = False
2258
else:
2259
client["expires"] = (datetime.datetime
2260
.utcnow()
2261
+ client["timeout"])
2262
2263
try:
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2267
["secret"]))
2268
except PGPError:
2269
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2274
2275
2276
# Add/remove clients based on new changes made to config
2277
for client_name in set(old_client_settings) - set(client_settings):
2278
del clients_data[client_name]
2279
for client_name in set(client_settings) - set(old_client_settings):
2280
clients_data[client_name] = client_settings[client_name]
2281
2282
# Create clients all clients
2283
for client_name, client in clients_data.iteritems():
2284
tcp_server.clients[client_name] = client_class(
2285
name = client_name, settings = client)
2286
1589
client_class = functools.partial(ClientDBus, bus = bus)
1590
tcp_server.clients.update(set(
1591
client_class(name = section,
1592
config= dict(client_config.items(section)))
1593
for section in client_config.sections()))
2287
1594
if not tcp_server.clients:
2288
logger.warning("No clients defined")
2289
1595
logger.warning(u"No clients defined")
1596
1597
if debug:
1598
# Redirect stdin so all checkers get /dev/null
1599
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1600
os.dup2(null, sys.stdin.fileno())
1601
if null > 2:
1602
os.close(null)
1603
else:
1604
# No console logging
1605
logger.removeHandler(console)
1606
# Close all input and output, do double fork, etc.
1607
daemon()
1608
1609
try:
1610
with closing(pidfile):
1611
pid = os.getpid()
1612
pidfile.write(str(pid) + "\n")
1613
del pidfile
1614
except IOError:
1615
logger.error(u"Could not write to file %r with PID %d",
1616
pidfilename, pid)
1617
except NameError:
1618
# "pidfile" was never created
1619
pass
1620
del pidfilename
1621
2290
1622
if not debug:
2291
try:
2292
with pidfile:
2293
pid = os.getpid()
2294
pidfile.write(str(pid) + "\n".encode("utf-8"))
2295
del pidfile
2296
except IOError:
2297
logger.error("Could not write to file %r with PID %d",
2298
pidfilename, pid)
2299
except NameError:
2300
# "pidfile" was never created
2301
pass
2302
del pidfilename
2303
1623
signal.signal(signal.SIGINT, signal.SIG_IGN)
2304
2305
1624
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2306
1625
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2307
1626
2309
1628
class MandosDBusService(dbus.service.Object):
2310
1629
"""A D-Bus proxy object"""
2311
1630
def __init__(self):
2312
dbus.service.Object.__init__(self, bus, "/")
2313
_interface = "se.recompile.Mandos"
1631
dbus.service.Object.__init__(self, bus, u"/")
1632
_interface = u"se.bsnet.fukt.Mandos"
2314
1633
2315
@dbus.service.signal(_interface, signature="o")
2316
def ClientAdded(self, objpath):
1634
@dbus.service.signal(_interface, signature=u"oa{sv}")
1635
def ClientAdded(self, objpath, properties):
2317
1636
"D-Bus signal"
2318
1637
pass
2319
1638
2320
@dbus.service.signal(_interface, signature="ss")
1639
@dbus.service.signal(_interface, signature=u"ss")
2321
1640
def ClientNotFound(self, fingerprint, address):
2322
1641
"D-Bus signal"
2323
1642
pass
2324
1643
2325
@dbus.service.signal(_interface, signature="os")
1644
@dbus.service.signal(_interface, signature=u"os")
2326
1645
def ClientRemoved(self, objpath, name):
2327
1646
"D-Bus signal"
2328
1647
pass
2329
1648
2330
@dbus.service.method(_interface, out_signature="ao")
1649
@dbus.service.method(_interface, out_signature=u"ao")
2331
1650
def GetAllClients(self):
2332
1651
"D-Bus method"
2333
1652
return dbus.Array(c.dbus_object_path
2334
for c in
2335
tcp_server.clients.itervalues())
1653
for c in tcp_server.clients)
2336
1654
2337
1655
@dbus.service.method(_interface,
2338
out_signature="a{oa{sv}}")
1656
out_signature=u"a{oa{sv}}")
2339
1657
def GetAllClientsWithProperties(self):
2340
1658
"D-Bus method"
2341
1659
return dbus.Dictionary(
2342
((c.dbus_object_path, c.GetAll(""))
2343
for c in tcp_server.clients.itervalues()),
2344
signature="oa{sv}")
1660
((c.dbus_object_path, c.GetAll(u""))
1661
for c in tcp_server.clients),
1662
signature=u"oa{sv}")
2345
1663
2346
@dbus.service.method(_interface, in_signature="o")
1664
@dbus.service.method(_interface, in_signature=u"o")
2347
1665
def RemoveClient(self, object_path):
2348
1666
"D-Bus method"
2349
for c in tcp_server.clients.itervalues():
1667
for c in tcp_server.clients:
2350
1668
if c.dbus_object_path == object_path:
2351
del tcp_server.clients[c.name]
1669
tcp_server.clients.remove(c)
2352
1670
c.remove_from_connection()
2353
1671
# Don't signal anything except ClientRemoved
2354
1672
c.disable(quiet=True)
2359
1677
2360
1678
del _interface
2361
1679
2362
class MandosDBusServiceTransitional(MandosDBusService):
2363
__metaclass__ = AlternateDBusNamesMetaclass
2364
mandos_dbus_service = MandosDBusServiceTransitional()
1680
mandos_dbus_service = MandosDBusService()
2365
1681
2366
1682
def cleanup():
2367
1683
"Cleanup function; run on exit"
2368
1684
service.cleanup()
2369
1685
2370
multiprocessing.active_children()
2371
if not (tcp_server.clients or client_settings):
2372
return
2373
2374
# Store client before exiting. Secrets are encrypted with key
2375
# based on what config file has. If config file is
2376
# removed/edited, old secret will thus be unrecovable.
2377
clients = {}
2378
with PGPEngine() as pgp:
2379
for client in tcp_server.clients.itervalues():
2380
key = client_settings[client.name]["secret"]
2381
client.encrypted_secret = pgp.encrypt(client.secret,
2382
key)
2383
client_dict = {}
2384
2385
# A list of attributes that can not be pickled
2386
# + secret.
2387
exclude = set(("bus", "changedstate", "secret",
2388
"checker"))
2389
for name, typ in (inspect.getmembers
2390
(dbus.service.Object)):
2391
exclude.add(name)
2392
2393
client_dict["encrypted_secret"] = (client
2394
.encrypted_secret)
2395
for attr in client.client_structure:
2396
if attr not in exclude:
2397
client_dict[attr] = getattr(client, attr)
2398
2399
clients[client.name] = client_dict
2400
del client_settings[client.name]["secret"]
2401
2402
try:
2403
with os.fdopen(os.open(stored_state_path,
2404
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2405
0600), "wb") as stored_state:
2406
pickle.dump((clients, client_settings), stored_state)
2407
except (IOError, OSError) as e:
2408
logger.warning("Could not save persistent state: {0}"
2409
.format(e))
2410
if e.errno not in (errno.ENOENT, errno.EACCES):
2411
raise
2412
2413
# Delete all clients, and settings from config
2414
1686
while tcp_server.clients:
2415
name, client = tcp_server.clients.popitem()
1687
client = tcp_server.clients.pop()
2416
1688
if use_dbus:
2417
1689
client.remove_from_connection()
1690
client.disable_hook = None
2418
1691
# Don't signal anything except ClientRemoved
2419
1692
client.disable(quiet=True)
2420
1693
if use_dbus:
2421
1694
# Emit D-Bus signal
2422
mandos_dbus_service.ClientRemoved(client
2423
.dbus_object_path,
1695
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2424
1696
client.name)
2425
client_settings.clear()
2426
1697
2427
1698
atexit.register(cleanup)
2428
1699
2429
for client in tcp_server.clients.itervalues():
1700
for client in tcp_server.clients:
2430
1701
if use_dbus:
2431
1702
# Emit D-Bus signal
2432
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2433
# Need to initiate checking of clients
2434
if client.enabled:
2435
client.init_checker()
1703
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1704
client.GetAll(u""))
1705
client.enable()
2436
1706
2437
1707
tcp_server.enable()
2438
1708
tcp_server.server_activate()
2440
1710
# Find out what port we got
2441
1711
service.port = tcp_server.socket.getsockname()[1]
2442
1712
if use_ipv6:
2443
logger.info("Now listening on address %r, port %d,"
1713
logger.info(u"Now listening on address %r, port %d,"
2444
1714
" flowinfo %d, scope_id %d"
2445
1715
% tcp_server.socket.getsockname())
2446
1716
else: # IPv4
2447
logger.info("Now listening on address %r, port %d"
1717
logger.info(u"Now listening on address %r, port %d"
2448
1718
% tcp_server.socket.getsockname())
2449
1719
2450
1720
#service.interface = tcp_server.socket.getsockname()[3]
2453
1723
# From the Avahi example code
2454
1724
try:
2455
1725
service.activate()
2456
except dbus.exceptions.DBusException as error:
2457
logger.critical("DBusException: %s", error)
1726
except dbus.exceptions.DBusException, error:
1727
logger.critical(u"DBusException: %s", error)
2458
1728
cleanup()
2459
1729
sys.exit(1)
2460
1730
# End of Avahi example code
2464
1734
(tcp_server.handle_request
2465
1735
(*args[2:], **kwargs) or True))
2466
1736
2467
logger.debug("Starting main loop")
1737
logger.debug(u"Starting main loop")
2468
1738
main_loop.run()
2469
except AvahiError as error:
2470
logger.critical("AvahiError: %s", error)
1739
except AvahiError, error:
1740
logger.critical(u"AvahiError: %s", error)
2471
1741
cleanup()
2472
1742
sys.exit(1)
2473
1743
except KeyboardInterrupt:
2474
1744
if debug:
2475
print("", file=sys.stderr)
2476
logger.debug("Server received KeyboardInterrupt")
2477
logger.debug("Server exiting")
1745
print >> sys.stderr
1746
logger.debug(u"Server received KeyboardInterrupt")
1747
logger.debug(u"Server exiting")
2478
1748
# Must run before the D-Bus bus name gets deregistered
2479
1749
cleanup()
2480
1750
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0