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- Committer: Teddy Hogeborn
- Date: 2009-11-01 00:10:28 UTC
- Revision ID: teddy@fukt.bsnet.se-20091101001028-hf4mbnoz1yum7bkf
* Makefile (BROKEN_PIE): Add comment.
* debian/rules (BROKEN_PIE): - '' -
* plugin-runner.c: Really always use <sysexits.h> exit codes.
* plugins.d/mandos-client.c: Use <sysexits.h> exit codes.
(start_mandos_communication): Make sure errno is always set when
returning -1.
* debian/rules (BROKEN_PIE): - '' -
* plugin-runner.c: Really always use <sysexits.h> exit codes.
* plugins.d/mandos-client.c: Use <sysexits.h> exit codes.
(start_mandos_communication): Make sure errno is always set when
returning -1.
- 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
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
56
55
import logging
57
56
import logging.handlers
58
57
import pwd
59
import contextlib
58
from contextlib import closing
60
59
import struct
61
60
import fcntl
62
61
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
62
69
63
import dbus
70
64
import dbus.service
75
69
import ctypes.util
76
70
import xml.dom.minidom
77
71
import inspect
78
import GnuPGInterface
79
72
80
73
try:
81
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
78
except ImportError:
86
79
SO_BINDTODEVICE = None
87
80
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
81
82
version = "1.0.14"
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(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
129
130
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
147
def __enter__(self):
148
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
151
self._cleanup()
152
return False
153
154
def __del__(self):
155
self._cleanup()
156
157
def _cleanup(self):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
162
for filename in files:
163
os.remove(os.path.join(root, filename))
164
for dirname in dirs:
165
os.rmdir(os.path.join(root, dirname))
166
# Remove tempdir
167
os.rmdir(self.tempdir)
168
self.tempdir = None
169
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
190
return ciphertext
191
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
208
209
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)
210
98
211
99
class AvahiError(Exception):
212
100
def __init__(self, value, *args, **kwargs):
228
116
Attributes:
229
117
interface: integer; avahi.IF_UNSPEC or an interface index.
230
118
Used to optionally bind to the specified interface.
231
name: string; Example: 'Mandos'
232
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
233
121
See <http://www.dns-sd.org/ServiceTypes.html>
234
122
port: integer; what port to announce
235
123
TXT: list of strings; TXT record for the service
244
132
"""
245
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
134
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
248
136
protocol = avahi.PROTO_UNSPEC, bus = None):
249
137
self.interface = interface
250
138
self.name = name
259
147
self.group = None # our entry group
260
148
self.server = None
261
149
self.bus = bus
262
self.entry_group_state_changed_match = None
263
150
def rename(self):
264
151
"""Derived from the Avahi example code"""
265
152
if self.rename_count >= self.max_renames:
266
logger.critical("No suitable Zeroconf service name found"
267
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
268
155
self.rename_count)
269
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
272
logger.info("Changing Zeroconf service name to %r ...",
273
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))
274
164
self.remove()
275
try:
276
self.add()
277
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
165
self.add()
281
166
self.rename_count += 1
282
167
def remove(self):
283
168
"""Derived from the Avahi example code"""
284
if self.entry_group_state_changed_match is not None:
285
self.entry_group_state_changed_match.remove()
286
self.entry_group_state_changed_match = None
287
169
if self.group is not None:
288
170
self.group.Reset()
289
171
def add(self):
290
172
"""Derived from the Avahi example code"""
291
self.remove()
292
173
if self.group is None:
293
174
self.group = dbus.Interface(
294
175
self.bus.get_object(avahi.DBUS_NAME,
295
176
self.server.EntryGroupNew()),
296
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
297
self.entry_group_state_changed_match = (
298
self.group.connect_to_signal(
299
'StateChanged', self.entry_group_state_changed))
300
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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' ...",
301
182
self.name, self.type)
302
183
self.group.AddService(
303
184
self.interface,
310
191
self.group.Commit()
311
192
def entry_group_state_changed(self, state, error):
312
193
"""Derived from the Avahi example code"""
313
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
314
195
315
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
316
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
317
198
elif state == avahi.ENTRY_GROUP_COLLISION:
318
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
319
200
self.rename()
320
201
elif state == avahi.ENTRY_GROUP_FAILURE:
321
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
322
203
unicode(error))
323
raise AvahiGroupError("State changed: %s"
204
raise AvahiGroupError(u"State changed: %s"
324
205
% unicode(error))
325
206
def cleanup(self):
326
207
"""Derived from the Avahi example code"""
327
208
if self.group is not None:
328
try:
329
self.group.Free()
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
332
pass
209
self.group.Free()
333
210
self.group = None
334
self.remove()
335
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
336
212
"""Derived from the Avahi example code"""
337
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
347
if error is None:
348
logger.error(bad_states[state])
349
else:
350
logger.error(bad_states[state] + ": %r", error)
351
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
352
216
elif state == avahi.SERVER_RUNNING:
353
217
self.add()
354
else:
355
if error is None:
356
logger.debug("Unknown state: %r", state)
357
else:
358
logger.debug("Unknown state: %r: %r", state, error)
359
218
def activate(self):
360
219
"""Derived from the Avahi example code"""
361
220
if self.server is None:
362
221
self.server = dbus.Interface(
363
222
self.bus.get_object(avahi.DBUS_NAME,
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
366
224
avahi.DBUS_INTERFACE_SERVER)
367
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
368
226
self.server_state_changed)
369
227
self.server_state_changed(self.server.GetState())
370
228
371
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
379
return ret
380
229
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
387
230
class Client(object):
388
231
"""A representation of a client host served by this server.
389
232
390
233
Attributes:
391
approved: bool(); 'None' if not yet approved/disapproved
392
approval_delay: datetime.timedelta(); Time to wait for approval
393
approval_duration: datetime.timedelta(); Duration of one approval
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)
394
248
checker: subprocess.Popen(); a running checker process used
395
249
to see if the client lives.
396
250
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
398
checker_command: string; External command which is run to check
399
if client lives. %() expansions are done at
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
400
256
runtime with vars(self) as dict, so that for
401
257
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
403
created: datetime.datetime(); (UTC) object creation
404
client_structure: Object describing what attributes a client has
405
and is used for storing the client at exit
406
258
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
408
enabled: bool()
409
fingerprint: string (40 or 32 hexadecimal digits); used to
410
uniquely identify the client
411
host: string; available for use by the checker command
412
interval: datetime.timedelta(); How often to start a new checker
413
last_approval_request: datetime.datetime(); (UTC) or None
414
last_checked_ok: datetime.datetime(); (UTC) or None
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
419
name: string; from the config file, used in log messages and
420
D-Bus identifiers
421
secret: bytestring; sent verbatim (over TLS) to client
422
timeout: datetime.timedelta(); How long from last_checked_ok
423
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
428
259
"""
429
260
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
444
267
445
268
def timeout_milliseconds(self):
446
269
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
452
271
453
272
def interval_milliseconds(self):
454
273
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
274
return self._timedelta_to_milliseconds(self.interval)
456
275
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
459
460
@staticmethod
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
465
settings = {}
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
469
470
client["host"] = section["host"]
471
# Reformat values from string types to Python types
472
client["approved_by_default"] = config.getboolean(
473
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
476
client["fingerprint"] = (section["fingerprint"].upper()
477
.replace(" ", ""))
478
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
480
elif "secfile" in section:
481
with open(os.path.expanduser(os.path.expandvars
482
(section["secfile"])),
483
"rb") as secfile:
484
client["secret"] = secfile.read()
485
else:
486
raise TypeError("No secret or secfile for section %s"
487
% section)
488
client["timeout"] = string_to_delta(section["timeout"])
489
client["extended_timeout"] = string_to_delta(
490
section["extended_timeout"])
491
client["interval"] = string_to_delta(section["interval"])
492
client["approval_delay"] = string_to_delta(
493
section["approval_delay"])
494
client["approval_duration"] = string_to_delta(
495
section["approval_duration"])
496
client["checker_command"] = section["checker"]
497
client["last_approval_request"] = None
498
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
507
508
return settings
509
510
511
def __init__(self, settings, name = None):
276
def __init__(self, name = None, disable_hook=None, config=None):
512
277
"""Note: the 'checker' key in 'config' sets the
513
278
'checker_command' attribute and *not* the 'checker'
514
279
attribute."""
515
280
self.name = name
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
519
520
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
521
284
# Uppercase and remove spaces from fingerprint for later
522
285
# comparison purposes with return value from the fingerprint()
523
286
# function
524
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
526
527
# 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
528
309
self.checker = None
529
310
self.checker_initiator_tag = None
530
311
self.disable_initiator_tag = None
531
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
532
314
self.current_checker_command = None
533
self.approved = None
534
self.approvals_pending = 0
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
547
if not name.startswith("_"):
548
self.client_structure.append(name)
549
550
# Send notice to process children that client state has changed
551
def send_changedstate(self):
552
with self.changedstate:
553
self.changedstate.notify_all()
315
self.last_connect = None
554
316
555
317
def enable(self):
556
318
"""Start this client's checker and timeout hooks"""
557
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
558
320
# Already enabled
559
321
return
560
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
562
self.enabled = True
563
322
self.last_enabled = datetime.datetime.utcnow()
564
self.init_checker()
565
566
def disable(self, quiet=True):
567
"""Disable this client."""
568
if not getattr(self, "enabled", False):
569
return False
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
573
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
576
self.disable_initiator_tag = None
577
self.expires = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
580
self.checker_initiator_tag = None
581
self.stop_checker()
582
self.enabled = False
583
# Do not run this again if called by a gobject.timeout_add
584
return False
585
586
def __del__(self):
587
self.disable()
588
589
def init_checker(self):
590
323
# Schedule a new checker to be started an 'interval' from now,
591
324
# and every interval from then on.
592
325
self.checker_initiator_tag = (gobject.timeout_add
593
326
(self.interval_milliseconds(),
594
327
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
595
330
# Schedule a disable() when 'timeout' has passed
596
331
self.disable_initiator_tag = (gobject.timeout_add
597
332
(self.timeout_milliseconds(),
598
333
self.disable))
599
# Also start a new checker *right now*.
600
self.start_checker()
334
self.enabled = True
335
336
def disable(self):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
346
self.checker_initiator_tag = None
347
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
350
self.enabled = False
351
# Do not run this again if called by a gobject.timeout_add
352
return False
353
354
def __del__(self):
355
self.disable_hook = None
356
self.disable()
601
357
602
358
def checker_callback(self, pid, condition, command):
603
359
"""The checker has completed, so take appropriate actions."""
604
360
self.checker_callback_tag = None
605
361
self.checker = None
606
362
if os.WIFEXITED(condition):
607
self.last_checker_status = os.WEXITSTATUS(condition)
608
if self.last_checker_status == 0:
609
logger.info("Checker for %(name)s succeeded",
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
610
366
vars(self))
611
367
self.checked_ok()
612
368
else:
613
logger.info("Checker for %(name)s failed",
369
logger.info(u"Checker for %(name)s failed",
614
370
vars(self))
615
371
else:
616
self.last_checker_status = -1
617
logger.warning("Checker for %(name)s crashed?",
372
logger.warning(u"Checker for %(name)s crashed?",
618
373
vars(self))
619
374
620
def checked_ok(self, timeout=None):
375
def checked_ok(self):
621
376
"""Bump up the timeout for this client.
622
377
623
378
This should only be called when the client has been seen,
624
379
alive and well.
625
380
"""
626
if timeout is None:
627
timeout = self.timeout
628
381
self.last_checked_ok = datetime.datetime.utcnow()
629
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
631
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
635
self.expires = datetime.datetime.utcnow() + timeout
636
637
def need_approval(self):
638
self.last_approval_request = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
639
386
640
387
def start_checker(self):
641
388
"""Start a new checker subprocess if one is not running.
648
395
# client would inevitably timeout, since no checker would get
649
396
# a chance to run to completion. If we instead leave running
650
397
# checkers alone, the checker would have to take more time
651
# than 'timeout' for the client to be disabled, which is as it
652
# should be.
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
653
400
654
401
# If a checker exists, make sure it is not a zombie
655
402
try:
656
403
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
657
except (AttributeError, OSError) as error:
404
except (AttributeError, OSError), error:
658
405
if (isinstance(error, OSError)
659
406
and error.errno != errno.ECHILD):
660
407
raise error
661
408
else:
662
409
if pid:
663
logger.warning("Checker was a zombie")
410
logger.warning(u"Checker was a zombie")
664
411
gobject.source_remove(self.checker_callback_tag)
665
412
self.checker_callback(pid, status,
666
413
self.current_checker_command)
671
418
command = self.checker_command % self.host
672
419
except TypeError:
673
420
# Escape attributes for the shell
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
682
427
try:
683
428
command = self.checker_command % escaped_attrs
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
687
432
return True # Try again later
688
433
self.current_checker_command = command
689
434
try:
690
logger.info("Starting checker %r for %s",
435
logger.info(u"Starting checker %r for %s",
691
436
command, self.name)
692
437
# We don't need to redirect stdout and stderr, since
693
438
# in normal mode, that is already done by daemon(),
695
440
# always replaced by /dev/null.)
696
441
self.checker = subprocess.Popen(command,
697
442
close_fds=True,
698
shell=True, cwd="/")
443
shell=True, cwd=u"/")
699
444
self.checker_callback_tag = (gobject.child_watch_add
700
445
(self.checker.pid,
701
446
self.checker_callback,
706
451
if pid:
707
452
gobject.source_remove(self.checker_callback_tag)
708
453
self.checker_callback(pid, status, command)
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
711
456
error)
712
457
# Re-run this periodically if run by gobject.timeout_add
713
458
return True
717
462
if self.checker_callback_tag:
718
463
gobject.source_remove(self.checker_callback_tag)
719
464
self.checker_callback_tag = None
720
if getattr(self, "checker", None) is None:
465
if getattr(self, u"checker", None) is None:
721
466
return
722
logger.debug("Stopping checker for %(name)s", vars(self))
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
723
468
try:
724
469
os.kill(self.checker.pid, signal.SIGTERM)
725
#time.sleep(0.5)
470
#os.sleep(0.5)
726
471
#if self.checker.poll() is None:
727
472
# os.kill(self.checker.pid, signal.SIGKILL)
728
except OSError as error:
473
except OSError, error:
729
474
if error.errno != errno.ESRCH: # No such process
730
475
raise
731
476
self.checker = None
732
733
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
485
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
736
491
"""Decorators for marking methods of a DBusObjectWithProperties to
737
492
become properties on the D-Bus.
738
493
743
498
dbus.service.method, except there is only "signature", since the
744
499
type from Get() and the type sent to Set() is the same.
745
500
"""
746
# Encoding deeply encoded byte arrays is not supported yet by the
747
# "Set" method, so we fail early here:
748
if byte_arrays and signature != "ay":
749
raise ValueError("Byte arrays not supported for non-'ay'"
750
" signature %r" % signature)
751
501
def decorator(func):
752
502
func._dbus_is_property = True
753
503
func._dbus_interface = dbus_interface
754
504
func._dbus_signature = signature
755
505
func._dbus_access = access
756
506
func._dbus_name = func.__name__
757
if func._dbus_name.endswith("_dbus_property"):
507
if func._dbus_name.endswith(u"_dbus_property"):
758
508
func._dbus_name = func._dbus_name[:-14]
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
760
510
return func
761
511
return decorator
762
512
782
532
783
533
class DBusObjectWithProperties(dbus.service.Object):
784
534
"""A D-Bus object with properties.
785
535
786
536
Classes inheriting from this can use the dbus_service_property
787
537
decorator to expose methods as D-Bus properties. It exposes the
788
538
standard Get(), Set(), and GetAll() methods on the D-Bus.
790
540
791
541
@staticmethod
792
542
def _is_dbus_property(obj):
793
return getattr(obj, "_dbus_is_property", False)
543
return getattr(obj, u"_dbus_is_property", False)
794
544
795
545
def _get_all_dbus_properties(self):
796
546
"""Returns a generator of (name, attribute) pairs
797
547
"""
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
548
return ((prop._dbus_name, prop)
800
549
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
550
inspect.getmembers(self, self._is_dbus_property))
802
551
803
552
def _get_dbus_property(self, interface_name, property_name):
804
553
"""Returns a bound method if one exists which is a D-Bus
805
554
property with the specified name and interface.
806
555
"""
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
813
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
814
566
# No such property
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
817
569
+ property_name)
818
570
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
820
out_signature="v")
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
821
573
def Get(self, interface_name, property_name):
822
574
"""Standard D-Bus property Get() method, see D-Bus standard.
823
575
"""
824
576
prop = self._get_dbus_property(interface_name, property_name)
825
if prop._dbus_access == "write":
577
if prop._dbus_access == u"write":
826
578
raise DBusPropertyAccessException(property_name)
827
579
value = prop()
828
if not hasattr(value, "variant_level"):
580
if not hasattr(value, u"variant_level"):
829
581
return value
830
582
return type(value)(value, variant_level=value.variant_level+1)
831
583
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
833
585
def Set(self, interface_name, property_name, value):
834
586
"""Standard D-Bus property Set() method, see D-Bus standard.
835
587
"""
836
588
prop = self._get_dbus_property(interface_name, property_name)
837
if prop._dbus_access == "read":
589
if prop._dbus_access == u"read":
838
590
raise DBusPropertyAccessException(property_name)
839
if prop._dbus_get_args_options["byte_arrays"]:
840
# The byte_arrays option is not supported yet on
841
# signatures other than "ay".
842
if prop._dbus_signature != "ay":
843
raise ValueError
591
if prop._dbus_get_args_options[u"byte_arrays"]:
844
592
value = dbus.ByteArray(''.join(unichr(byte)
845
593
for byte in value))
846
594
prop(value)
847
595
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
849
out_signature="a{sv}")
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
850
598
def GetAll(self, interface_name):
851
599
"""Standard D-Bus property GetAll() method, see D-Bus
852
600
standard.
853
601
854
602
Note: Will not include properties with access="write".
855
603
"""
856
properties = {}
604
all = {}
857
605
for name, prop in self._get_all_dbus_properties():
858
606
if (interface_name
859
607
and interface_name != prop._dbus_interface):
860
608
# Interface non-empty but did not match
861
609
continue
862
610
# Ignore write-only properties
863
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
864
612
continue
865
613
value = prop()
866
if not hasattr(value, "variant_level"):
867
properties[name] = value
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
868
616
continue
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
871
return dbus.Dictionary(properties, signature="sv")
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
872
620
873
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
874
out_signature="s",
622
out_signature=u"s",
875
623
path_keyword='object_path',
876
624
connection_keyword='connection')
877
625
def Introspect(self, object_path, connection):
882
630
try:
883
631
document = xml.dom.minidom.parseString(xmlstring)
884
632
def make_tag(document, name, prop):
885
e = document.createElement("property")
886
e.setAttribute("name", name)
887
e.setAttribute("type", prop._dbus_signature)
888
e.setAttribute("access", prop._dbus_access)
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
889
637
return e
890
for if_tag in document.getElementsByTagName("interface"):
638
for if_tag in document.getElementsByTagName(u"interface"):
891
639
for tag in (make_tag(document, name, prop)
892
640
for name, prop
893
641
in self._get_all_dbus_properties()
894
642
if prop._dbus_interface
895
== if_tag.getAttribute("name")):
643
== if_tag.getAttribute(u"name")):
896
644
if_tag.appendChild(tag)
897
645
# Add the names to the return values for the
898
646
# "org.freedesktop.DBus.Properties" methods
899
if (if_tag.getAttribute("name")
900
== "org.freedesktop.DBus.Properties"):
901
for cn in if_tag.getElementsByTagName("method"):
902
if cn.getAttribute("name") == "Get":
903
for arg in cn.getElementsByTagName("arg"):
904
if (arg.getAttribute("direction")
905
== "out"):
906
arg.setAttribute("name", "value")
907
elif cn.getAttribute("name") == "GetAll":
908
for arg in cn.getElementsByTagName("arg"):
909
if (arg.getAttribute("direction")
910
== "out"):
911
arg.setAttribute("name", "props")
912
xmlstring = document.toxml("utf-8")
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
913
661
document.unlink()
914
662
except (AttributeError, xml.dom.DOMException,
915
xml.parsers.expat.ExpatError) as error:
916
logger.error("Failed to override Introspection method",
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
917
665
error)
918
666
return xmlstring
919
667
920
668
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
if dt is None:
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
933
"""
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
946
continue
947
# Create an alternate D-Bus interface name based on
948
# the current name
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
959
.cell_contents)
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
984
return call_both
985
# Create the "call_both" function and add it to
986
# the class
987
attr[attrname] = fixscope(attribute,
988
new_function)
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
994
# to the class.
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
1027
669
class ClientDBus(Client, DBusObjectWithProperties):
1028
670
"""A Client class using D-Bus
1029
671
1031
673
dbus_object_path: dbus.ObjectPath
1032
674
bus: dbus.SystemBus()
1033
675
"""
1034
1035
runtime_expansions = (Client.runtime_expansions
1036
+ ("dbus_object_path",))
1037
1038
676
# dbus.service.Object doesn't use super(), so we can't either.
1039
677
1040
678
def __init__(self, bus = None, *args, **kwargs):
1041
679
self.bus = bus
1042
680
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
1046
681
# Only now, when this client is initialized, can it show up on
1047
682
# the D-Bus
1048
client_object_name = unicode(self.name).translate(
1049
{ord("."): ord("_"),
1050
ord("-"): ord("_")})
1051
683
self.dbus_object_path = (dbus.ObjectPath
1052
("/clients/" + client_object_name))
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1053
686
DBusObjectWithProperties.__init__(self, self.bus,
1054
687
self.dbus_object_path)
1055
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1059
""" Modify a variable so that it's a property which announces
1060
its changes to DBus.
1061
1062
transform_fun: Function that takes a value and a variant_level
1063
and transforms it to a D-Bus type.
1064
dbus_name: D-Bus name of the variable
1065
type_func: Function that transform the value before sending it
1066
to the D-Bus. Default: no transform
1067
variant_level: D-Bus variant level. Default: 1
1068
"""
1069
attrname = "_{0}".format(dbus_name)
1070
def setter(self, value):
1071
if hasattr(self, "dbus_object_path"):
1072
if (not hasattr(self, attrname) or
1073
type_func(getattr(self, attrname, None))
1074
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1080
setattr(self, attrname, value)
1081
1082
return property(lambda self: getattr(self, attrname), setter)
1083
1084
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1087
"ApprovalPending",
1088
type_func = bool)
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1091
"LastEnabled")
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1096
"LastCheckedOK")
1097
last_approval_request = notifychangeproperty(
1098
datetime_to_dbus, "LastApprovalRequest")
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1105
approval_duration = notifychangeproperty(
1106
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1108
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1112
extended_timeout = notifychangeproperty(
1113
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1120
1121
del notifychangeproperty
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
1122
716
1123
717
def __del__(self, *args, **kwargs):
1124
718
try:
1125
719
self.remove_from_connection()
1126
720
except LookupError:
1127
721
pass
1128
if hasattr(DBusObjectWithProperties, "__del__"):
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1129
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1130
724
Client.__del__(self, *args, **kwargs)
1131
725
1133
727
*args, **kwargs):
1134
728
self.checker_callback_tag = None
1135
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
1136
733
if os.WIFEXITED(condition):
1137
734
exitstatus = os.WEXITSTATUS(condition)
1138
735
# Emit D-Bus signal
1148
745
return Client.checker_callback(self, pid, condition, command,
1149
746
*args, **kwargs)
1150
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1151
757
def start_checker(self, *args, **kwargs):
1152
758
old_checker = self.checker
1153
759
if self.checker is not None:
1160
766
and old_checker_pid != self.checker.pid):
1161
767
# Emit D-Bus signal
1162
768
self.CheckerStarted(self.current_checker_command)
1163
return r
1164
1165
def _reset_approved(self):
1166
self.approved = None
1167
return False
1168
1169
def approve(self, value=True):
1170
self.send_changedstate()
1171
self.approved = value
1172
gobject.timeout_add(timedelta_to_milliseconds
1173
(self.approval_duration),
1174
self._reset_approved)
1175
1176
1177
## D-Bus methods, signals & properties
1178
_interface = "se.recompile.Mandos.Client"
1179
1180
## Signals
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
1181
790
1182
791
# CheckerCompleted - signal
1183
@dbus.service.signal(_interface, signature="nxs")
792
@dbus.service.signal(_interface, signature=u"nxs")
1184
793
def CheckerCompleted(self, exitcode, waitstatus, command):
1185
794
"D-Bus signal"
1186
795
pass
1187
796
1188
797
# CheckerStarted - signal
1189
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
1190
799
def CheckerStarted(self, command):
1191
800
"D-Bus signal"
1192
801
pass
1193
802
1194
803
# PropertyChanged - signal
1195
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
1196
805
def PropertyChanged(self, property, value):
1197
806
"D-Bus signal"
1198
807
pass
1200
809
# GotSecret - signal
1201
810
@dbus.service.signal(_interface)
1202
811
def GotSecret(self):
1203
"""D-Bus signal
1204
Is sent after a successful transfer of secret from the Mandos
1205
server to mandos-client
1206
"""
812
"D-Bus signal"
1207
813
pass
1208
814
1209
815
# Rejected - signal
1210
@dbus.service.signal(_interface, signature="s")
1211
def Rejected(self, reason):
1212
"D-Bus signal"
1213
pass
1214
1215
# NeedApproval - signal
1216
@dbus.service.signal(_interface, signature="tb")
1217
def NeedApproval(self, timeout, default):
1218
"D-Bus signal"
1219
return self.need_approval()
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
1227
pass
1228
1229
## Methods
1230
1231
# Approve - method
1232
@dbus.service.method(_interface, in_signature="b")
1233
def Approve(self, value):
1234
self.approve(value)
1235
1236
# CheckedOK - method
1237
@dbus.service.method(_interface)
1238
def CheckedOK(self):
1239
self.checked_ok()
816
@dbus.service.signal(_interface)
817
def Rejected(self):
818
"D-Bus signal"
819
pass
1240
820
1241
821
# Enable - method
1242
822
@dbus.service.method(_interface)
1261
841
def StopChecker(self):
1262
842
self.stop_checker()
1263
843
1264
## Properties
1265
1266
# ApprovalPending - property
1267
@dbus_service_property(_interface, signature="b", access="read")
1268
def ApprovalPending_dbus_property(self):
1269
return dbus.Boolean(bool(self.approvals_pending))
1270
1271
# ApprovedByDefault - property
1272
@dbus_service_property(_interface, signature="b",
1273
access="readwrite")
1274
def ApprovedByDefault_dbus_property(self, value=None):
1275
if value is None: # get
1276
return dbus.Boolean(self.approved_by_default)
1277
self.approved_by_default = bool(value)
1278
1279
# ApprovalDelay - property
1280
@dbus_service_property(_interface, signature="t",
1281
access="readwrite")
1282
def ApprovalDelay_dbus_property(self, value=None):
1283
if value is None: # get
1284
return dbus.UInt64(self.approval_delay_milliseconds())
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1286
1287
# ApprovalDuration - property
1288
@dbus_service_property(_interface, signature="t",
1289
access="readwrite")
1290
def ApprovalDuration_dbus_property(self, value=None):
1291
if value is None: # get
1292
return dbus.UInt64(timedelta_to_milliseconds(
1293
self.approval_duration))
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1295
1296
# Name - property
1297
@dbus_service_property(_interface, signature="s", access="read")
1298
def Name_dbus_property(self):
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1299
847
return dbus.String(self.name)
1300
848
1301
# Fingerprint - property
1302
@dbus_service_property(_interface, signature="s", access="read")
1303
def Fingerprint_dbus_property(self):
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1304
852
return dbus.String(self.fingerprint)
1305
853
1306
# Host - property
1307
@dbus_service_property(_interface, signature="s",
1308
access="readwrite")
1309
def Host_dbus_property(self, value=None):
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1310
858
if value is None: # get
1311
859
return dbus.String(self.host)
1312
self.host = unicode(value)
1313
1314
# Created - property
1315
@dbus_service_property(_interface, signature="s", access="read")
1316
def Created_dbus_property(self):
1317
return datetime_to_dbus(self.created)
1318
1319
# LastEnabled - property
1320
@dbus_service_property(_interface, signature="s", access="read")
1321
def LastEnabled_dbus_property(self):
1322
return datetime_to_dbus(self.last_enabled)
1323
1324
# Enabled - property
1325
@dbus_service_property(_interface, signature="b",
1326
access="readwrite")
1327
def Enabled_dbus_property(self, value=None):
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1328
881
if value is None: # get
1329
882
return dbus.Boolean(self.enabled)
1330
883
if value:
1332
885
else:
1333
886
self.disable()
1334
887
1335
# LastCheckedOK - property
1336
@dbus_service_property(_interface, signature="s",
1337
access="readwrite")
1338
def LastCheckedOK_dbus_property(self, value=None):
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1339
892
if value is not None:
1340
893
self.checked_ok()
1341
894
return
1342
return datetime_to_dbus(self.last_checked_ok)
1343
1344
# Expires - property
1345
@dbus_service_property(_interface, signature="s", access="read")
1346
def Expires_dbus_property(self):
1347
return datetime_to_dbus(self.expires)
1348
1349
# LastApprovalRequest - property
1350
@dbus_service_property(_interface, signature="s", access="read")
1351
def LastApprovalRequest_dbus_property(self):
1352
return datetime_to_dbus(self.last_approval_request)
1353
1354
# Timeout - property
1355
@dbus_service_property(_interface, signature="t",
1356
access="readwrite")
1357
def Timeout_dbus_property(self, value=None):
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1358
904
if value is None: # get
1359
905
return dbus.UInt64(self.timeout_milliseconds())
1360
906
self.timeout = datetime.timedelta(0, 0, 0, value)
1361
if getattr(self, "disable_initiator_tag", None) is None:
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
1362
911
return
1363
912
# Reschedule timeout
1364
913
gobject.source_remove(self.disable_initiator_tag)
1365
914
self.disable_initiator_tag = None
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
1372
921
if time_to_die <= 0:
1373
922
# The timeout has passed
1374
923
self.disable()
1375
924
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1379
925
self.disable_initiator_tag = (gobject.timeout_add
1380
926
(time_to_die, self.disable))
1381
927
1382
# ExtendedTimeout - property
1383
@dbus_service_property(_interface, signature="t",
1384
access="readwrite")
1385
def ExtendedTimeout_dbus_property(self, value=None):
1386
if value is None: # get
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1389
1390
# Interval - property
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1393
def Interval_dbus_property(self, value=None):
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1394
932
if value is None: # get
1395
933
return dbus.UInt64(self.interval_milliseconds())
1396
934
self.interval = datetime.timedelta(0, 0, 0, value)
1397
if getattr(self, "checker_initiator_tag", None) is None:
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1398
939
return
1399
if self.enabled:
1400
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
1406
# Checker - property
1407
@dbus_service_property(_interface, signature="s",
1408
access="readwrite")
1409
def Checker_dbus_property(self, value=None):
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1410
950
if value is None: # get
1411
951
return dbus.String(self.checker_command)
1412
self.checker_command = unicode(value)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
1413
957
1414
# CheckerRunning - property
1415
@dbus_service_property(_interface, signature="b",
1416
access="readwrite")
1417
def CheckerRunning_dbus_property(self, value=None):
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1418
962
if value is None: # get
1419
963
return dbus.Boolean(self.checker is not None)
1420
964
if value:
1422
966
else:
1423
967
self.stop_checker()
1424
968
1425
# ObjectPath - property
1426
@dbus_service_property(_interface, signature="o", access="read")
1427
def ObjectPath_dbus_property(self):
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1428
972
return self.dbus_object_path # is already a dbus.ObjectPath
1429
973
1430
# Secret = property
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
1433
def Secret_dbus_property(self, value):
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1434
978
self.secret = str(value)
1435
979
1436
980
del _interface
1437
981
1438
982
1439
class ProxyClient(object):
1440
def __init__(self, child_pipe, fpr, address):
1441
self._pipe = child_pipe
1442
self._pipe.send(('init', fpr, address))
1443
if not self._pipe.recv():
1444
raise KeyError()
1445
1446
def __getattribute__(self, name):
1447
if name == '_pipe':
1448
return super(ProxyClient, self).__getattribute__(name)
1449
self._pipe.send(('getattr', name))
1450
data = self._pipe.recv()
1451
if data[0] == 'data':
1452
return data[1]
1453
if data[0] == 'function':
1454
def func(*args, **kwargs):
1455
self._pipe.send(('funcall', name, args, kwargs))
1456
return self._pipe.recv()[1]
1457
return func
1458
1459
def __setattr__(self, name, value):
1460
if name == '_pipe':
1461
return super(ProxyClient, self).__setattr__(name, value)
1462
self._pipe.send(('setattr', name, value))
1463
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
1469
983
class ClientHandler(socketserver.BaseRequestHandler, object):
1470
984
"""A class to handle client connections.
1471
985
1473
987
Note: This will run in its own forked process."""
1474
988
1475
989
def handle(self):
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
1477
logger.info("TCP connection from: %s",
1478
unicode(self.client_address))
1479
logger.debug("Pipe FD: %d",
1480
self.server.child_pipe.fileno())
1481
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1482
995
session = (gnutls.connection
1483
996
.ClientSession(self.request,
1484
997
gnutls.connection
1485
998
.X509Credentials()))
1486
999
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1487
1009
# Note: gnutls.connection.X509Credentials is really a
1488
1010
# generic GnuTLS certificate credentials object so long as
1489
1011
# no X.509 keys are added to it. Therefore, we can use it
1490
1012
# here despite using OpenPGP certificates.
1491
1013
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1496
1018
# Use a fallback default, since this MUST be set.
1497
1019
priority = self.server.gnutls_priority
1498
1020
if priority is None:
1499
priority = "NORMAL"
1021
priority = u"NORMAL"
1500
1022
(gnutls.library.functions
1501
1023
.gnutls_priority_set_direct(session._c_object,
1502
1024
priority, None))
1503
1025
1504
# Start communication using the Mandos protocol
1505
# Get protocol number
1506
line = self.request.makefile().readline()
1507
logger.debug("Protocol version: %r", line)
1508
try:
1509
if int(line.strip().split()[0]) > 1:
1510
raise RuntimeError
1511
except (ValueError, IndexError, RuntimeError) as error:
1512
logger.error("Unknown protocol version: %s", error)
1513
return
1514
1515
# Start GnuTLS connection
1516
1026
try:
1517
1027
session.handshake()
1518
except gnutls.errors.GNUTLSError as error:
1519
logger.warning("Handshake failed: %s", error)
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1520
1030
# Do not run session.bye() here: the session is not
1521
1031
# established. Just abandon the request.
1522
1032
return
1523
logger.debug("Handshake succeeded")
1524
1525
approval_required = False
1033
logger.debug(u"Handshake succeeded")
1526
1034
try:
1527
try:
1528
fpr = self.fingerprint(self.peer_certificate
1529
(session))
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1533
return
1534
logger.debug("Fingerprint: %s", fpr)
1535
1536
try:
1537
client = ProxyClient(child_pipe, fpr,
1538
self.client_address)
1539
except KeyError:
1540
return
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
1546
if client.approval_delay:
1547
delay = client.approval_delay
1548
client.approvals_pending += 1
1549
approval_required = True
1550
1551
while True:
1552
if not client.enabled:
1553
logger.info("Client %s is disabled",
1554
client.name)
1555
if self.server.use_dbus:
1556
# Emit D-Bus signal
1557
client.Rejected("Disabled")
1558
return
1559
1560
if client.approved or not client.approval_delay:
1561
#We are approved or approval is disabled
1562
break
1563
elif client.approved is None:
1564
logger.info("Client %s needs approval",
1565
client.name)
1566
if self.server.use_dbus:
1567
# Emit D-Bus signal
1568
client.NeedApproval(
1569
client.approval_delay_milliseconds(),
1570
client.approved_by_default)
1571
else:
1572
logger.warning("Client %s was not approved",
1573
client.name)
1574
if self.server.use_dbus:
1575
# Emit D-Bus signal
1576
client.Rejected("Denied")
1577
return
1578
1579
#wait until timeout or approved
1580
time = datetime.datetime.now()
1581
client.changedstate.acquire()
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
1585
client.changedstate.release()
1586
time2 = datetime.datetime.now()
1587
if (time2 - time) >= delay:
1588
if not client.approved_by_default:
1589
logger.warning("Client %s timed out while"
1590
" waiting for approval",
1591
client.name)
1592
if self.server.use_dbus:
1593
# Emit D-Bus signal
1594
client.Rejected("Approval timed out")
1595
return
1596
else:
1597
break
1598
else:
1599
delay -= time2 - time
1600
1601
sent_size = 0
1602
while sent_size < len(client.secret):
1603
try:
1604
sent = session.send(client.secret[sent_size:])
1605
except gnutls.errors.GNUTLSError as error:
1606
logger.warning("gnutls send failed")
1607
return
1608
logger.debug("Sent: %d, remaining: %d",
1609
sent, len(client.secret)
1610
- (sent_size + sent))
1611
sent_size += sent
1612
1613
logger.info("Sending secret to %s", client.name)
1614
# bump the timeout using extended_timeout
1615
client.checked_ok(client.extended_timeout)
1616
if self.server.use_dbus:
1617
# Emit D-Bus signal
1618
client.GotSecret()
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1619
1041
1620
finally:
1621
if approval_required:
1622
client.approvals_pending -= 1
1623
try:
1624
session.bye()
1625
except gnutls.errors.GNUTLSError as error:
1626
logger.warning("GnuTLS bye failed")
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1627
1067
1628
1068
@staticmethod
1629
1069
def peer_certificate(session):
1639
1079
.gnutls_certificate_get_peers
1640
1080
(session._c_object, ctypes.byref(list_size)))
1641
1081
if not bool(cert_list) and list_size.value != 0:
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1644
1084
if list_size.value == 0:
1645
1085
return None
1646
1086
cert = cert_list[0]
1672
1112
if crtverify.value != 0:
1673
1113
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1674
1114
raise (gnutls.errors.CertificateSecurityError
1675
("Verify failed"))
1115
(u"Verify failed"))
1676
1116
# New buffer for the fingerprint
1677
1117
buf = ctypes.create_string_buffer(20)
1678
1118
buf_len = ctypes.c_size_t()
1685
1125
# Convert the buffer to a Python bytestring
1686
1126
fpr = ctypes.string_at(buf, buf_len.value)
1687
1127
# Convert the bytestring to hexadecimal notation
1688
hex_fpr = binascii.hexlify(fpr).upper()
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1689
1129
return hex_fpr
1690
1130
1691
1131
1692
class MultiprocessingMixIn(object):
1693
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1694
def sub_process_main(self, request, address):
1695
try:
1696
self.finish_request(request, address)
1697
except Exception:
1698
self.handle_error(request, address)
1699
self.close_request(request)
1700
1701
def process_request(self, request, address):
1702
"""Start a new process to process the request."""
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
1706
proc.start()
1707
return proc
1708
1709
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1711
""" adds a pipe to the MixIn """
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1712
1134
def process_request(self, request, client_address):
1713
1135
"""Overrides and wraps the original process_request().
1714
1136
1715
1137
This function creates a new pipe in self.pipe
1716
1138
"""
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1718
1719
proc = MultiprocessingMixIn.process_request(self, request,
1720
client_address)
1721
self.child_pipe.close()
1722
self.add_pipe(parent_pipe, proc)
1723
1724
def add_pipe(self, parent_pipe, proc):
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1725
1145
"""Dummy function; override as necessary"""
1726
raise NotImplementedError
1727
1728
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1730
1150
socketserver.TCPServer, object):
1731
1151
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1732
1152
1748
1168
bind to an address or port if they were not specified."""
1749
1169
if self.interface is not None:
1750
1170
if SO_BINDTODEVICE is None:
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1753
1173
self.interface)
1754
1174
else:
1755
1175
try:
1756
1176
self.socket.setsockopt(socket.SOL_SOCKET,
1757
1177
SO_BINDTODEVICE,
1758
1178
str(self.interface
1759
+ '\0'))
1760
except socket.error as error:
1179
+ u'\0'))
1180
except socket.error, error:
1761
1181
if error[0] == errno.EPERM:
1762
logger.error("No permission to"
1763
" bind to interface %s",
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1764
1184
self.interface)
1765
1185
elif error[0] == errno.ENOPROTOOPT:
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1768
1188
self.interface)
1769
1189
else:
1770
1190
raise
1772
1192
if self.server_address[0] or self.server_address[1]:
1773
1193
if not self.server_address[0]:
1774
1194
if self.address_family == socket.AF_INET6:
1775
any_address = "::" # in6addr_any
1195
any_address = u"::" # in6addr_any
1776
1196
else:
1777
1197
any_address = socket.INADDR_ANY
1778
1198
self.server_address = (any_address,
1805
1225
self.enabled = False
1806
1226
self.clients = clients
1807
1227
if self.clients is None:
1808
self.clients = {}
1228
self.clients = set()
1809
1229
self.use_dbus = use_dbus
1810
1230
self.gnutls_priority = gnutls_priority
1811
1231
IPv6_TCPServer.__init__(self, server_address,
1815
1235
def server_activate(self):
1816
1236
if self.enabled:
1817
1237
return socketserver.TCPServer.server_activate(self)
1818
1819
1238
def enable(self):
1820
1239
self.enabled = True
1821
1822
def add_pipe(self, parent_pipe, proc):
1240
def add_pipe(self, pipe):
1823
1241
# Call "handle_ipc" for both data and EOF events
1824
gobject.io_add_watch(parent_pipe.fileno(),
1825
gobject.IO_IN | gobject.IO_HUP,
1826
functools.partial(self.handle_ipc,
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1832
proc = None, client_object=None):
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1833
1245
condition_names = {
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1836
1248
# blocking).
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1840
1252
# broken, usually for pipes and
1841
1253
# sockets).
1842
1254
}
1844
1256
for cond, name in
1845
1257
condition_names.iteritems()
1846
1258
if cond & condition)
1847
# error, or the other end of multiprocessing.Pipe has closed
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1849
# Wait for other process to exit
1850
proc.join()
1851
return False
1852
1853
# Read a request from the child
1854
request = parent_pipe.recv()
1855
command = request[0]
1856
1857
if command == 'init':
1858
fpr = request[1]
1859
address = request[2]
1860
1861
for c in self.clients.itervalues():
1862
if c.fingerprint == fpr:
1863
client = c
1864
break
1865
else:
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
1868
if self.use_dbus:
1869
# Emit D-Bus signal
1870
mandos_dbus_service.ClientNotFound(fpr,
1871
address[0])
1872
parent_pipe.send(False)
1873
return False
1874
1875
gobject.io_add_watch(parent_pipe.fileno(),
1876
gobject.IO_IN | gobject.IO_HUP,
1877
functools.partial(self.handle_ipc,
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
1883
parent_pipe.send(True)
1884
# remove the old hook in favor of the new above hook on
1885
# same fileno
1886
return False
1887
if command == 'funcall':
1888
funcname = request[1]
1889
args = request[2]
1890
kwargs = request[3]
1891
1892
parent_pipe.send(('data', getattr(client_object,
1893
funcname)(*args,
1894
**kwargs)))
1895
1896
if command == 'getattr':
1897
attrname = request[1]
1898
if callable(client_object.__getattribute__(attrname)):
1899
parent_pipe.send(('function',))
1900
else:
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1903
1904
if command == 'setattr':
1905
attrname = request[1]
1906
value = request[2]
1907
setattr(client_object, attrname, value)
1908
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
1909
1313
return True
1910
1314
1911
1315
1912
1316
def string_to_delta(interval):
1913
1317
"""Parse a string and return a datetime.timedelta
1914
1318
1915
>>> string_to_delta('7d')
1319
>>> string_to_delta(u'7d')
1916
1320
datetime.timedelta(7)
1917
>>> string_to_delta('60s')
1321
>>> string_to_delta(u'60s')
1918
1322
datetime.timedelta(0, 60)
1919
>>> string_to_delta('60m')
1323
>>> string_to_delta(u'60m')
1920
1324
datetime.timedelta(0, 3600)
1921
>>> string_to_delta('24h')
1325
>>> string_to_delta(u'24h')
1922
1326
datetime.timedelta(1)
1923
>>> string_to_delta('1w')
1327
>>> string_to_delta(u'1w')
1924
1328
datetime.timedelta(7)
1925
>>> string_to_delta('5m 30s')
1329
>>> string_to_delta(u'5m 30s')
1926
1330
datetime.timedelta(0, 330)
1927
1331
"""
1928
1332
timevalue = datetime.timedelta(0)
1930
1334
try:
1931
1335
suffix = unicode(s[-1])
1932
1336
value = int(s[:-1])
1933
if suffix == "d":
1337
if suffix == u"d":
1934
1338
delta = datetime.timedelta(value)
1935
elif suffix == "s":
1339
elif suffix == u"s":
1936
1340
delta = datetime.timedelta(0, value)
1937
elif suffix == "m":
1341
elif suffix == u"m":
1938
1342
delta = datetime.timedelta(0, 0, 0, 0, value)
1939
elif suffix == "h":
1343
elif suffix == u"h":
1940
1344
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1941
elif suffix == "w":
1345
elif suffix == u"w":
1942
1346
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1943
1347
else:
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
1946
raise ValueError(*(e.args))
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
1947
1351
timevalue += delta
1948
1352
return timevalue
1949
1353
1950
1354
1355
def if_nametoindex(interface):
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
1359
global if_nametoindex
1360
try:
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1363
.if_nametoindex)
1364
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1366
def if_nametoindex(interface):
1367
"Get an interface index the hard way, i.e. using fcntl()"
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
1375
return interface_index
1376
return if_nametoindex(interface)
1377
1378
1951
1379
def daemon(nochdir = False, noclose = False):
1952
1380
"""See daemon(3). Standard BSD Unix function.
1953
1381
1956
1384
sys.exit()
1957
1385
os.setsid()
1958
1386
if not nochdir:
1959
os.chdir("/")
1387
os.chdir(u"/")
1960
1388
if os.fork():
1961
1389
sys.exit()
1962
1390
if not noclose:
1964
1392
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1965
1393
if not stat.S_ISCHR(os.fstat(null).st_mode):
1966
1394
raise OSError(errno.ENODEV,
1967
"%s not a character device"
1395
u"%s not a character device"
1968
1396
% os.path.devnull)
1969
1397
os.dup2(null, sys.stdin.fileno())
1970
1398
os.dup2(null, sys.stdout.fileno())
1978
1406
##################################################################
1979
1407
# Parsing of options, both command line and config file
1980
1408
1981
parser = argparse.ArgumentParser()
1982
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
1984
help="show version number and exit")
1985
parser.add_argument("-i", "--interface", metavar="IF",
1986
help="Bind to interface IF")
1987
parser.add_argument("-a", "--address",
1988
help="Address to listen for requests on")
1989
parser.add_argument("-p", "--port", type=int,
1990
help="Port number to receive requests on")
1991
parser.add_argument("--check", action="store_true",
1992
help="Run self-test")
1993
parser.add_argument("--debug", action="store_true",
1994
help="Debug mode; run in foreground and log"
1995
" to terminal")
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
help="Debug level for stdout output")
1998
parser.add_argument("--priority", help="GnuTLS"
1999
" priority string (see GnuTLS documentation)")
2000
parser.add_argument("--servicename",
2001
metavar="NAME", help="Zeroconf service name")
2002
parser.add_argument("--configdir",
2003
default="/etc/mandos", metavar="DIR",
2004
help="Directory to search for configuration"
2005
" files")
2006
parser.add_argument("--no-dbus", action="store_false",
2007
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2009
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2011
parser.add_argument("--no-restore", action="store_false",
2012
dest="restore", help="Do not restore stored"
2013
" state")
2014
parser.add_argument("--statedir", metavar="DIR",
2015
help="Directory to save/restore state in")
2016
2017
options = parser.parse_args()
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
2018
1435
2019
1436
if options.check:
2020
1437
import doctest
2022
1439
sys.exit()
2023
1440
2024
1441
# Default values for config file for server-global settings
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
2037
1451
}
2038
1452
2039
1453
# Parse config file for server-global settings
2040
1454
server_config = configparser.SafeConfigParser(server_defaults)
2041
1455
del server_defaults
2042
1456
server_config.read(os.path.join(options.configdir,
2043
"mandos.conf"))
1457
u"mandos.conf"))
2044
1458
# Convert the SafeConfigParser object to a dict
2045
1459
server_settings = server_config.defaults()
2046
1460
# Use the appropriate methods on the non-string config options
2047
for option in ("debug", "use_dbus", "use_ipv6"):
2048
server_settings[option] = server_config.getboolean("DEFAULT",
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
2049
1463
option)
2050
1464
if server_settings["port"]:
2051
server_settings["port"] = server_config.getint("DEFAULT",
2052
"port")
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
2053
1467
del server_config
2054
1468
2055
1469
# Override the settings from the config file with command line
2056
1470
# options, if set.
2057
for option in ("interface", "address", "port", "debug",
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
2061
1474
value = getattr(options, option)
2062
1475
if value is not None:
2063
1476
server_settings[option] = value
2071
1484
##################################################################
2072
1485
2073
1486
# For convenience
2074
debug = server_settings["debug"]
2075
debuglevel = server_settings["debuglevel"]
2076
use_dbus = server_settings["use_dbus"]
2077
use_ipv6 = server_settings["use_ipv6"]
2078
stored_state_path = os.path.join(server_settings["statedir"],
2079
stored_state_file)
2080
2081
if debug:
2082
initlogger(debug, logging.DEBUG)
2083
else:
2084
if not debuglevel:
2085
initlogger(debug)
2086
else:
2087
level = getattr(logging, debuglevel.upper())
2088
initlogger(debug, level)
2089
2090
if server_settings["servicename"] != "Mandos":
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
2091
1496
syslogger.setFormatter(logging.Formatter
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
2095
1500
2096
1501
# Parse config file with clients
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2098
client_config.read(os.path.join(server_settings["configdir"],
2099
"clients.conf"))
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1506
}
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
2100
1510
2101
1511
global mandos_dbus_service
2102
1512
mandos_dbus_service = None
2103
1513
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
2106
1516
ClientHandler,
2107
interface=(server_settings["interface"]
2108
or None),
1517
interface=server_settings[u"interface"],
2109
1518
use_ipv6=use_ipv6,
2110
1519
gnutls_priority=
2111
server_settings["priority"],
1520
server_settings[u"priority"],
2112
1521
use_dbus=use_dbus)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2115
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
2119
1527
2120
1528
try:
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
2123
1531
except KeyError:
2124
1532
try:
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
2127
1535
except KeyError:
2128
1536
try:
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
2131
1539
except KeyError:
2132
1540
uid = 65534
2133
1541
gid = 65534
2134
1542
try:
2135
1543
os.setgid(gid)
2136
1544
os.setuid(uid)
2137
except OSError as error:
1545
except OSError, error:
2138
1546
if error[0] != errno.EPERM:
2139
1547
raise error
2140
1548
1549
# Enable all possible GnuTLS debugging
2141
1550
if debug:
2142
# Enable all possible GnuTLS debugging
2143
2144
1551
# "Use a log level over 10 to enable all debugging options."
2145
1552
# - GnuTLS manual
2146
1553
gnutls.library.functions.gnutls_global_set_log_level(11)
2147
1554
2148
1555
@gnutls.library.types.gnutls_log_func
2149
1556
def debug_gnutls(level, string):
2150
logger.debug("GnuTLS: %s", string[:-1])
1557
logger.debug(u"GnuTLS: %s", string[:-1])
2151
1558
2152
1559
(gnutls.library.functions
2153
1560
.gnutls_global_set_log_function(debug_gnutls))
2154
2155
# Redirect stdin so all checkers get /dev/null
2156
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2157
os.dup2(null, sys.stdin.fileno())
2158
if null > 2:
2159
os.close(null)
2160
2161
# Need to fork before connecting to D-Bus
2162
if not debug:
2163
# Close all input and output, do double fork, etc.
2164
daemon()
2165
2166
gobject.threads_init()
2167
1561
2168
1562
global main_loop
2169
1563
# From the Avahi example code
2172
1566
bus = dbus.SystemBus()
2173
1567
# End of Avahi example code
2174
1568
if use_dbus:
2175
try:
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
2177
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")
2183
use_dbus = False
2184
server_settings["use_dbus"] = False
2185
tcp_server.use_dbus = False
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2186
1570
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)
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
2191
1574
if server_settings["interface"]:
2192
1575
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
2194
2195
global multiprocessing_manager
2196
multiprocessing_manager = multiprocessing.Manager()
1576
(str(server_settings[u"interface"])))
2197
1577
2198
1578
client_class = Client
2199
1579
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
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2222
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2231
try:
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
client[name] = value
2239
except KeyError:
2240
pass
2241
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2249
logger.warning(
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2255
logger.warning(
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2261
else:
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
2266
try:
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
2271
except PGPError:
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2277
2278
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2284
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
2289
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
2290
1585
if not tcp_server.clients:
2291
logger.warning("No clients defined")
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1604
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
2292
1616
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
1623
2293
1624
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
2305
del pidfilename
2306
1625
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
2308
1626
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2309
1627
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2310
1628
2312
1630
class MandosDBusService(dbus.service.Object):
2313
1631
"""A D-Bus proxy object"""
2314
1632
def __init__(self):
2315
dbus.service.Object.__init__(self, bus, "/")
2316
_interface = "se.recompile.Mandos"
2317
2318
@dbus.service.signal(_interface, signature="o")
2319
def ClientAdded(self, objpath):
2320
"D-Bus signal"
2321
pass
2322
2323
@dbus.service.signal(_interface, signature="ss")
2324
def ClientNotFound(self, fingerprint, address):
2325
"D-Bus signal"
2326
pass
2327
2328
@dbus.service.signal(_interface, signature="os")
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
2329
1647
def ClientRemoved(self, objpath, name):
2330
1648
"D-Bus signal"
2331
1649
pass
2332
1650
2333
@dbus.service.method(_interface, out_signature="ao")
1651
@dbus.service.method(_interface, out_signature=u"ao")
2334
1652
def GetAllClients(self):
2335
1653
"D-Bus method"
2336
1654
return dbus.Array(c.dbus_object_path
2337
for c in
2338
tcp_server.clients.itervalues())
1655
for c in tcp_server.clients)
2339
1656
2340
1657
@dbus.service.method(_interface,
2341
out_signature="a{oa{sv}}")
1658
out_signature=u"a{oa{sv}}")
2342
1659
def GetAllClientsWithProperties(self):
2343
1660
"D-Bus method"
2344
1661
return dbus.Dictionary(
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
2347
signature="oa{sv}")
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2348
1665
2349
@dbus.service.method(_interface, in_signature="o")
1666
@dbus.service.method(_interface, in_signature=u"o")
2350
1667
def RemoveClient(self, object_path):
2351
1668
"D-Bus method"
2352
for c in tcp_server.clients.itervalues():
1669
for c in tcp_server.clients:
2353
1670
if c.dbus_object_path == object_path:
2354
del tcp_server.clients[c.name]
1671
tcp_server.clients.remove(c)
2355
1672
c.remove_from_connection()
2356
1673
# Don't signal anything except ClientRemoved
2357
c.disable(quiet=True)
1674
c.disable(signal=False)
2358
1675
# Emit D-Bus signal
2359
1676
self.ClientRemoved(object_path, c.name)
2360
1677
return
2361
raise KeyError(object_path)
1678
raise KeyError
2362
1679
2363
1680
del _interface
2364
1681
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
2368
2369
def cleanup():
2370
"Cleanup function; run on exit"
2371
service.cleanup()
2372
2373
multiprocessing.active_children()
2374
if not (tcp_server.clients or client_settings):
2375
return
2376
2377
# Store client before exiting. Secrets are encrypted with key
2378
# based on what config file has. If config file is
2379
# removed/edited, old secret will thus be unrecovable.
2380
clients = {}
2381
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
2383
key = client_settings[client.name]["secret"]
2384
client.encrypted_secret = pgp.encrypt(client.secret,
2385
key)
2386
client_dict = {}
2387
2388
# A list of attributes that can not be pickled
2389
# + secret.
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
2394
exclude.add(name)
2395
2396
client_dict["encrypted_secret"] = (client
2397
.encrypted_secret)
2398
for attr in client.client_structure:
2399
if attr not in exclude:
2400
client_dict[attr] = getattr(client, attr)
2401
2402
clients[client.name] = client_dict
2403
del client_settings[client.name]["secret"]
2404
2405
try:
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
os.rename(tempname, stored_state_path)
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
2416
if not debug:
2417
try:
2418
os.remove(tempname)
2419
except NameError:
2420
pass
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
2425
# Delete all clients, and settings from config
2426
while tcp_server.clients:
2427
name, client = tcp_server.clients.popitem()
2428
if use_dbus:
2429
client.remove_from_connection()
2430
# Don't signal anything except ClientRemoved
2431
client.disable(quiet=True)
2432
if use_dbus:
2433
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
2436
client.name)
2437
client_settings.clear()
2438
2439
atexit.register(cleanup)
2440
2441
for client in tcp_server.clients.itervalues():
1682
mandos_dbus_service = MandosDBusService()
1683
1684
for client in tcp_server.clients:
2442
1685
if use_dbus:
2443
1686
# Emit D-Bus signal
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2445
# Need to initiate checking of clients
2446
if client.enabled:
2447
client.init_checker()
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1689
client.enable()
2448
1690
2449
1691
tcp_server.enable()
2450
1692
tcp_server.server_activate()
2452
1694
# Find out what port we got
2453
1695
service.port = tcp_server.socket.getsockname()[1]
2454
1696
if use_ipv6:
2455
logger.info("Now listening on address %r, port %d,"
1697
logger.info(u"Now listening on address %r, port %d,"
2456
1698
" flowinfo %d, scope_id %d"
2457
1699
% tcp_server.socket.getsockname())
2458
1700
else: # IPv4
2459
logger.info("Now listening on address %r, port %d"
1701
logger.info(u"Now listening on address %r, port %d"
2460
1702
% tcp_server.socket.getsockname())
2461
1703
2462
1704
#service.interface = tcp_server.socket.getsockname()[3]
2465
1707
# From the Avahi example code
2466
1708
try:
2467
1709
service.activate()
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2470
cleanup()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2471
1712
sys.exit(1)
2472
1713
# End of Avahi example code
2473
1714
2476
1717
(tcp_server.handle_request
2477
1718
(*args[2:], **kwargs) or True))
2478
1719
2479
logger.debug("Starting main loop")
1720
logger.debug(u"Starting main loop")
2480
1721
main_loop.run()
2481
except AvahiError as error:
2482
logger.critical("AvahiError: %s", error)
2483
cleanup()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2484
1724
sys.exit(1)
2485
1725
except KeyboardInterrupt:
2486
1726
if debug:
2487
print("", file=sys.stderr)
2488
logger.debug("Server received KeyboardInterrupt")
2489
logger.debug("Server exiting")
2490
# Must run before the D-Bus bus name gets deregistered
2491
cleanup()
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
2492
1730
2493
1731
if __name__ == '__main__':
2494
1732
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0