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- Committer: teddy at bsnet
- Date: 2011-12-25 00:43:51 UTC
- Revision ID: teddy@fukt.bsnet.se-20111225004351-3hw3msbs8ooesltd
Removed implemented TODO entry
- files added:
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
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42
import gnutls.crypto
61
62
import functools
62
63
import cPickle as pickle
63
64
import multiprocessing
65
import types
66
import binascii
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import tempfile
64
68
65
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import dbus
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70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
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77
import inspect
78
import GnuPGInterface
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79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
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87
83
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version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
version = "1.4.1"
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stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
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92
syslogger = (logging.handlers.SysLogHandler
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93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
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96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
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address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
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)
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130
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
147
def __enter__(self):
148
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
151
self._cleanup()
152
return False
153
154
def __del__(self):
155
self._cleanup()
156
157
def _cleanup(self):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
162
for filename in files:
163
os.remove(os.path.join(root, filename))
164
for dirname in dirs:
165
os.rmdir(os.path.join(root, dirname))
166
# Remove tempdir
167
os.rmdir(self.tempdir)
168
self.tempdir = None
169
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
190
return ciphertext
191
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
208
209
101
210
102
211
class AvahiError(Exception):
103
212
def __init__(self, value, *args, **kwargs):
119
228
Attributes:
120
229
interface: integer; avahi.IF_UNSPEC or an interface index.
121
230
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
231
name: string; Example: 'Mandos'
232
type: string; Example: '_mandos._tcp'.
124
233
See <http://www.dns-sd.org/ServiceTypes.html>
125
234
port: integer; what port to announce
126
235
TXT: list of strings; TXT record for the service
135
244
"""
136
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
246
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
247
domain = "", host = "", max_renames = 32768,
139
248
protocol = avahi.PROTO_UNSPEC, bus = None):
140
249
self.interface = interface
141
250
self.name = name
150
259
self.group = None # our entry group
151
260
self.server = None
152
261
self.bus = bus
262
self.entry_group_state_changed_match = None
153
263
def rename(self):
154
264
"""Derived from the Avahi example code"""
155
265
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
266
logger.critical("No suitable Zeroconf service name found"
267
" after %i retries, exiting.",
158
268
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
269
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
272
logger.info("Changing Zeroconf service name to %r ...",
162
273
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
274
self.remove()
168
275
try:
169
276
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
277
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
172
279
self.cleanup()
173
280
os._exit(1)
174
281
self.rename_count += 1
175
282
def remove(self):
176
283
"""Derived from the Avahi example code"""
284
if self.entry_group_state_changed_match is not None:
285
self.entry_group_state_changed_match.remove()
286
self.entry_group_state_changed_match = None
177
287
if self.group is not None:
178
288
self.group.Reset()
179
289
def add(self):
180
290
"""Derived from the Avahi example code"""
291
self.remove()
181
292
if self.group is None:
182
293
self.group = dbus.Interface(
183
294
self.bus.get_object(avahi.DBUS_NAME,
184
295
self.server.EntryGroupNew()),
185
296
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
297
self.entry_group_state_changed_match = (
298
self.group.connect_to_signal(
299
'StateChanged', self.entry_group_state_changed))
300
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
301
self.name, self.type)
191
302
self.group.AddService(
192
303
self.interface,
199
310
self.group.Commit()
200
311
def entry_group_state_changed(self, state, error):
201
312
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
313
logger.debug("Avahi entry group state change: %i", state)
203
314
204
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
316
logger.debug("Zeroconf service established.")
206
317
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
318
logger.info("Zeroconf service name collision.")
208
319
self.rename()
209
320
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
321
logger.critical("Avahi: Error in group state changed %s",
211
322
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
323
raise AvahiGroupError("State changed: %s"
213
324
% unicode(error))
214
325
def cleanup(self):
215
326
"""Derived from the Avahi example code"""
216
327
if self.group is not None:
217
self.group.Free()
328
try:
329
self.group.Free()
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
332
pass
218
333
self.group = None
219
def server_state_changed(self, state):
334
self.remove()
335
def server_state_changed(self, state, error=None):
220
336
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
337
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
347
if error is None:
348
logger.error(bad_states[state])
349
else:
350
logger.error(bad_states[state] + ": %r", error)
351
self.cleanup()
225
352
elif state == avahi.SERVER_RUNNING:
226
353
self.add()
354
else:
355
if error is None:
356
logger.debug("Unknown state: %r", state)
357
else:
358
logger.debug("Unknown state: %r: %r", state, error)
227
359
def activate(self):
228
360
"""Derived from the Avahi example code"""
229
361
if self.server is None:
230
362
self.server = dbus.Interface(
231
363
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
233
366
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
367
self.server.connect_to_signal("StateChanged",
235
368
self.server_state_changed)
236
369
self.server_state_changed(self.server.GetState())
237
370
371
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
379
return ret
238
380
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
239
387
class Client(object):
240
388
"""A representation of a client host served by this server.
241
389
242
390
Attributes:
243
name: string; from the config file, used in log messages and
244
D-Bus identifiers
391
approved: bool(); 'None' if not yet approved/disapproved
392
approval_delay: datetime.timedelta(); Time to wait for approval
393
approval_duration: datetime.timedelta(); Duration of one approval
394
checker: subprocess.Popen(); a running checker process used
395
to see if the client lives.
396
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
398
checker_command: string; External command which is run to check
399
if client lives. %() expansions are done at
400
runtime with vars(self) as dict, so that for
401
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
403
created: datetime.datetime(); (UTC) object creation
404
client_structure: Object describing what attributes a client has
405
and is used for storing the client at exit
406
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
408
enabled: bool()
245
409
fingerprint: string (40 or 32 hexadecimal digits); used to
246
410
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
411
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
251
enabled: bool()
412
interval: datetime.timedelta(); How often to start a new checker
413
last_approval_request: datetime.datetime(); (UTC) or None
252
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
253
422
timeout: datetime.timedelta(); How long from last_checked_ok
254
423
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
257
checker: subprocess.Popen(); a running checker process used
258
to see if the client lives.
259
'None' if no process is running.
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
265
runtime with vars(self) as dict, so that for
266
instance %(name)s can be used in the command.
267
current_checker_command: string; current running checker_command
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
271
428
"""
272
429
273
@staticmethod
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
279
444
280
445
def timeout_milliseconds(self):
281
446
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
283
452
284
453
def interval_milliseconds(self):
285
454
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
287
455
return timedelta_to_milliseconds(self.interval)
456
288
457
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
290
291
def __init__(self, name = None, disable_hook=None, config=None):
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):
292
512
"""Note: the 'checker' key in 'config' sets the
293
513
'checker_command' attribute and *not* the 'checker'
294
514
attribute."""
295
515
self.name = name
296
if config is None:
297
config = {}
298
logger.debug(u"Creating client %r", self.name)
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
519
520
logger.debug("Creating client %r", self.name)
299
521
# Uppercase and remove spaces from fingerprint for later
300
522
# comparison purposes with return value from the fingerprint()
301
523
# function
302
self.fingerprint = (config[u"fingerprint"].upper()
303
.replace(u" ", u""))
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
310
"rb") as secfile:
311
self.secret = secfile.read()
312
else:
313
raise TypeError(u"No secret or secfile for client %s"
314
% self.name)
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
317
self.enabled = False
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
524
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
526
527
# attributes specific for this server instance
323
528
self.checker = None
324
529
self.checker_initiator_tag = None
325
530
self.disable_initiator_tag = None
326
531
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
532
self.current_checker_command = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
332
True)
533
self.approved = None
333
534
self.approvals_pending = 0
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
547
if not name.startswith("_"):
548
self.client_structure.append(name)
339
549
550
# Send notice to process children that client state has changed
340
551
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
344
552
with self.changedstate:
553
self.changedstate.notify_all()
554
345
555
def enable(self):
346
556
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
557
if getattr(self, "enabled", False):
348
558
# Already enabled
349
559
return
350
560
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
562
self.enabled = True
351
563
self.last_enabled = datetime.datetime.utcnow()
564
self.init_checker()
565
566
def disable(self, quiet=True):
567
"""Disable this client."""
568
if not getattr(self, "enabled", False):
569
return False
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
573
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
576
self.disable_initiator_tag = None
577
self.expires = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
580
self.checker_initiator_tag = None
581
self.stop_checker()
582
self.enabled = False
583
# Do not run this again if called by a gobject.timeout_add
584
return False
585
586
def __del__(self):
587
self.disable()
588
589
def init_checker(self):
352
590
# Schedule a new checker to be started an 'interval' from now,
353
591
# and every interval from then on.
354
592
self.checker_initiator_tag = (gobject.timeout_add
358
596
self.disable_initiator_tag = (gobject.timeout_add
359
597
(self.timeout_milliseconds(),
360
598
self.disable))
361
self.enabled = True
362
599
# Also start a new checker *right now*.
363
600
self.start_checker()
364
601
365
def disable(self, quiet=True):
366
"""Disable this client."""
367
if not getattr(self, "enabled", False):
368
return False
369
if not quiet:
370
self.send_changedstate()
371
if not quiet:
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
382
self.enabled = False
383
# Do not run this again if called by a gobject.timeout_add
384
return False
385
386
def __del__(self):
387
self.disable_hook = None
388
self.disable()
389
390
602
def checker_callback(self, pid, condition, command):
391
603
"""The checker has completed, so take appropriate actions."""
392
604
self.checker_callback_tag = None
393
605
self.checker = None
394
606
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
396
if exitstatus == 0:
397
logger.info(u"Checker for %(name)s succeeded",
607
self.last_checker_status = os.WEXITSTATUS(condition)
608
if self.last_checker_status == 0:
609
logger.info("Checker for %(name)s succeeded",
398
610
vars(self))
399
611
self.checked_ok()
400
612
else:
401
logger.info(u"Checker for %(name)s failed",
613
logger.info("Checker for %(name)s failed",
402
614
vars(self))
403
615
else:
404
logger.warning(u"Checker for %(name)s crashed?",
616
self.last_checker_status = -1
617
logger.warning("Checker for %(name)s crashed?",
405
618
vars(self))
406
619
407
def checked_ok(self):
620
def checked_ok(self, timeout=None):
408
621
"""Bump up the timeout for this client.
409
622
410
623
This should only be called when the client has been seen,
411
624
alive and well.
412
625
"""
626
if timeout is None:
627
timeout = self.timeout
413
628
self.last_checked_ok = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
417
self.disable))
629
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
631
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
635
self.expires = datetime.datetime.utcnow() + timeout
636
637
def need_approval(self):
638
self.last_approval_request = datetime.datetime.utcnow()
418
639
419
640
def start_checker(self):
420
641
"""Start a new checker subprocess if one is not running.
433
654
# If a checker exists, make sure it is not a zombie
434
655
try:
435
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
436
except (AttributeError, OSError), error:
657
except (AttributeError, OSError) as error:
437
658
if (isinstance(error, OSError)
438
659
and error.errno != errno.ECHILD):
439
660
raise error
440
661
else:
441
662
if pid:
442
logger.warning(u"Checker was a zombie")
663
logger.warning("Checker was a zombie")
443
664
gobject.source_remove(self.checker_callback_tag)
444
665
self.checker_callback(pid, status,
445
666
self.current_checker_command)
450
671
command = self.checker_command % self.host
451
672
except TypeError:
452
673
# Escape attributes for the shell
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
455
errors=
456
u'replace')))
457
for key, val in
458
vars(self).iteritems())
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
459
682
try:
460
683
command = self.checker_command % escaped_attrs
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
464
687
return True # Try again later
465
688
self.current_checker_command = command
466
689
try:
467
logger.info(u"Starting checker %r for %s",
690
logger.info("Starting checker %r for %s",
468
691
command, self.name)
469
692
# We don't need to redirect stdout and stderr, since
470
693
# in normal mode, that is already done by daemon(),
472
695
# always replaced by /dev/null.)
473
696
self.checker = subprocess.Popen(command,
474
697
close_fds=True,
475
shell=True, cwd=u"/")
698
shell=True, cwd="/")
476
699
self.checker_callback_tag = (gobject.child_watch_add
477
700
(self.checker.pid,
478
701
self.checker_callback,
483
706
if pid:
484
707
gobject.source_remove(self.checker_callback_tag)
485
708
self.checker_callback(pid, status, command)
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
488
711
error)
489
712
# Re-run this periodically if run by gobject.timeout_add
490
713
return True
494
717
if self.checker_callback_tag:
495
718
gobject.source_remove(self.checker_callback_tag)
496
719
self.checker_callback_tag = None
497
if getattr(self, u"checker", None) is None:
720
if getattr(self, "checker", None) is None:
498
721
return
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
logger.debug("Stopping checker for %(name)s", vars(self))
500
723
try:
501
724
os.kill(self.checker.pid, signal.SIGTERM)
502
725
#time.sleep(0.5)
503
726
#if self.checker.poll() is None:
504
727
# os.kill(self.checker.pid, signal.SIGKILL)
505
except OSError, error:
728
except OSError as error:
506
729
if error.errno != errno.ESRCH: # No such process
507
730
raise
508
731
self.checker = None
509
732
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
733
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
512
736
"""Decorators for marking methods of a DBusObjectWithProperties to
513
737
become properties on the D-Bus.
514
738
521
745
"""
522
746
# Encoding deeply encoded byte arrays is not supported yet by the
523
747
# "Set" method, so we fail early here:
524
if byte_arrays and signature != u"ay":
525
raise ValueError(u"Byte arrays not supported for non-'ay'"
526
u" signature %r" % signature)
748
if byte_arrays and signature != "ay":
749
raise ValueError("Byte arrays not supported for non-'ay'"
750
" signature %r" % signature)
527
751
def decorator(func):
528
752
func._dbus_is_property = True
529
753
func._dbus_interface = dbus_interface
530
754
func._dbus_signature = signature
531
755
func._dbus_access = access
532
756
func._dbus_name = func.__name__
533
if func._dbus_name.endswith(u"_dbus_property"):
757
if func._dbus_name.endswith("_dbus_property"):
534
758
func._dbus_name = func._dbus_name[:-14]
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
536
760
return func
537
761
return decorator
538
762
558
782
559
783
class DBusObjectWithProperties(dbus.service.Object):
560
784
"""A D-Bus object with properties.
561
785
562
786
Classes inheriting from this can use the dbus_service_property
563
787
decorator to expose methods as D-Bus properties. It exposes the
564
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
566
790
567
791
@staticmethod
568
792
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
793
return getattr(obj, "_dbus_is_property", False)
570
794
571
795
def _get_all_dbus_properties(self):
572
796
"""Returns a generator of (name, attribute) pairs
573
797
"""
574
return ((prop._dbus_name, prop)
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
575
800
for name, prop in
576
inspect.getmembers(self, self._is_dbus_property))
801
inspect.getmembers(cls, self._is_dbus_property))
577
802
578
803
def _get_dbus_property(self, interface_name, property_name):
579
804
"""Returns a bound method if one exists which is a D-Bus
580
805
property with the specified name and interface.
581
806
"""
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
585
if (prop is None
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
590
continue
591
return prop
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
813
592
814
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
595
817
+ property_name)
596
818
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
820
out_signature="v")
599
821
def Get(self, interface_name, property_name):
600
822
"""Standard D-Bus property Get() method, see D-Bus standard.
601
823
"""
602
824
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
825
if prop._dbus_access == "write":
604
826
raise DBusPropertyAccessException(property_name)
605
827
value = prop()
606
if not hasattr(value, u"variant_level"):
828
if not hasattr(value, "variant_level"):
607
829
return value
608
830
return type(value)(value, variant_level=value.variant_level+1)
609
831
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
833
def Set(self, interface_name, property_name, value):
612
834
"""Standard D-Bus property Set() method, see D-Bus standard.
613
835
"""
614
836
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
837
if prop._dbus_access == "read":
616
838
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
839
if prop._dbus_get_args_options["byte_arrays"]:
618
840
# The byte_arrays option is not supported yet on
619
841
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
842
if prop._dbus_signature != "ay":
621
843
raise ValueError
622
844
value = dbus.ByteArray(''.join(unichr(byte)
623
845
for byte in value))
624
846
prop(value)
625
847
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
849
out_signature="a{sv}")
628
850
def GetAll(self, interface_name):
629
851
"""Standard D-Bus property GetAll() method, see D-Bus
630
852
standard.
631
853
632
854
Note: Will not include properties with access="write".
633
855
"""
634
all = {}
856
properties = {}
635
857
for name, prop in self._get_all_dbus_properties():
636
858
if (interface_name
637
859
and interface_name != prop._dbus_interface):
638
860
# Interface non-empty but did not match
639
861
continue
640
862
# Ignore write-only properties
641
if prop._dbus_access == u"write":
863
if prop._dbus_access == "write":
642
864
continue
643
865
value = prop()
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
866
if not hasattr(value, "variant_level"):
867
properties[name] = value
646
868
continue
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
871
return dbus.Dictionary(properties, signature="sv")
650
872
651
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
652
out_signature=u"s",
874
out_signature="s",
653
875
path_keyword='object_path',
654
876
connection_keyword='connection')
655
877
def Introspect(self, object_path, connection):
660
882
try:
661
883
document = xml.dom.minidom.parseString(xmlstring)
662
884
def make_tag(document, name, prop):
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
885
e = document.createElement("property")
886
e.setAttribute("name", name)
887
e.setAttribute("type", prop._dbus_signature)
888
e.setAttribute("access", prop._dbus_access)
667
889
return e
668
for if_tag in document.getElementsByTagName(u"interface"):
890
for if_tag in document.getElementsByTagName("interface"):
669
891
for tag in (make_tag(document, name, prop)
670
892
for name, prop
671
893
in self._get_all_dbus_properties()
672
894
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
895
== if_tag.getAttribute("name")):
674
896
if_tag.appendChild(tag)
675
897
# Add the names to the return values for the
676
898
# "org.freedesktop.DBus.Properties" methods
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
688
== u"out"):
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
899
if (if_tag.getAttribute("name")
900
== "org.freedesktop.DBus.Properties"):
901
for cn in if_tag.getElementsByTagName("method"):
902
if cn.getAttribute("name") == "Get":
903
for arg in cn.getElementsByTagName("arg"):
904
if (arg.getAttribute("direction")
905
== "out"):
906
arg.setAttribute("name", "value")
907
elif cn.getAttribute("name") == "GetAll":
908
for arg in cn.getElementsByTagName("arg"):
909
if (arg.getAttribute("direction")
910
== "out"):
911
arg.setAttribute("name", "props")
912
xmlstring = document.toxml("utf-8")
691
913
document.unlink()
692
914
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
915
xml.parsers.expat.ExpatError) as error:
916
logger.error("Failed to override Introspection method",
695
917
error)
696
918
return xmlstring
697
919
698
920
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
if dt is None:
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
933
"""
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
946
continue
947
# Create an alternate D-Bus interface name based on
948
# the current name
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
959
.cell_contents)
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
984
return call_both
985
# Create the "call_both" function and add it to
986
# the class
987
attr[attrname] = fixscope(attribute,
988
new_function)
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
994
# to the class.
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
699
1027
class ClientDBus(Client, DBusObjectWithProperties):
700
1028
"""A Client class using D-Bus
701
1029
703
1031
dbus_object_path: dbus.ObjectPath
704
1032
bus: dbus.SystemBus()
705
1033
"""
1034
1035
runtime_expansions = (Client.runtime_expansions
1036
+ ("dbus_object_path",))
1037
706
1038
# dbus.service.Object doesn't use super(), so we can't either.
707
1039
708
1040
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
710
1041
self.bus = bus
711
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
712
1046
# Only now, when this client is initialized, can it show up on
713
1047
# the D-Bus
1048
client_object_name = unicode(self.name).translate(
1049
{ord("."): ord("_"),
1050
ord("-"): ord("_")})
714
1051
self.dbus_object_path = (dbus.ObjectPath
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1052
("/clients/" + client_object_name))
717
1053
DBusObjectWithProperties.__init__(self, self.bus,
718
1054
self.dbus_object_path)
719
1055
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
725
bval = bool(value)
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
730
dbus_bool)
731
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
735
736
@staticmethod
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
741
742
def enable(self):
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
746
# Emit D-Bus signals
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
752
variant_level=1))
753
return r
754
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
759
# Emit D-Bus signal
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
762
return r
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
763
1122
764
1123
def __del__(self, *args, **kwargs):
765
1124
try:
766
1125
self.remove_from_connection()
767
1126
except LookupError:
768
1127
pass
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
if hasattr(DBusObjectWithProperties, "__del__"):
770
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1130
Client.__del__(self, *args, **kwargs)
772
1131
774
1133
*args, **kwargs):
775
1134
self.checker_callback_tag = None
776
1135
self.checker = None
777
# Emit D-Bus signal
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
780
1136
if os.WIFEXITED(condition):
781
1137
exitstatus = os.WEXITSTATUS(condition)
782
1138
# Emit D-Bus signal
792
1148
return Client.checker_callback(self, pid, condition, command,
793
1149
*args, **kwargs)
794
1150
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
797
# Emit D-Bus signal
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
801
variant_level=1)))
802
return r
803
804
1151
def start_checker(self, *args, **kwargs):
805
1152
old_checker = self.checker
806
1153
if self.checker is not None:
813
1160
and old_checker_pid != self.checker.pid):
814
1161
# Emit D-Bus signal
815
1162
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
819
1163
return r
820
1164
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
828
return r
829
830
1165
def _reset_approved(self):
831
self._approved = None
1166
self.approved = None
832
1167
return False
833
1168
834
1169
def approve(self, value=True):
835
1170
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
1171
self.approved = value
1172
gobject.timeout_add(timedelta_to_milliseconds
838
1173
(self.approval_duration),
839
1174
self._reset_approved)
840
1175
841
1176
842
1177
## D-Bus methods, signals & properties
843
_interface = u"se.bsnet.fukt.Mandos.Client"
1178
_interface = "se.recompile.Mandos.Client"
844
1179
845
1180
## Signals
846
1181
847
1182
# CheckerCompleted - signal
848
@dbus.service.signal(_interface, signature=u"nxs")
1183
@dbus.service.signal(_interface, signature="nxs")
849
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
850
1185
"D-Bus signal"
851
1186
pass
852
1187
853
1188
# CheckerStarted - signal
854
@dbus.service.signal(_interface, signature=u"s")
1189
@dbus.service.signal(_interface, signature="s")
855
1190
def CheckerStarted(self, command):
856
1191
"D-Bus signal"
857
1192
pass
858
1193
859
1194
# PropertyChanged - signal
860
@dbus.service.signal(_interface, signature=u"sv")
1195
@dbus.service.signal(_interface, signature="sv")
861
1196
def PropertyChanged(self, property, value):
862
1197
"D-Bus signal"
863
1198
pass
872
1207
pass
873
1208
874
1209
# Rejected - signal
875
@dbus.service.signal(_interface, signature=u"s")
1210
@dbus.service.signal(_interface, signature="s")
876
1211
def Rejected(self, reason):
877
1212
"D-Bus signal"
878
1213
pass
879
1214
880
1215
# NeedApproval - signal
881
@dbus.service.signal(_interface, signature=u"tb")
1216
@dbus.service.signal(_interface, signature="tb")
882
1217
def NeedApproval(self, timeout, default):
883
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
"""
884
1227
pass
885
1228
886
1229
## Methods
887
1230
888
1231
# Approve - method
889
@dbus.service.method(_interface, in_signature=u"b")
1232
@dbus.service.method(_interface, in_signature="b")
890
1233
def Approve(self, value):
891
1234
self.approve(value)
892
1235
893
1236
# CheckedOK - method
894
1237
@dbus.service.method(_interface)
895
1238
def CheckedOK(self):
896
return self.checked_ok()
1239
self.checked_ok()
897
1240
898
1241
# Enable - method
899
1242
@dbus.service.method(_interface)
921
1264
## Properties
922
1265
923
1266
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1267
@dbus_service_property(_interface, signature="b", access="read")
925
1268
def ApprovalPending_dbus_property(self):
926
1269
return dbus.Boolean(bool(self.approvals_pending))
927
1270
928
1271
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
1272
@dbus_service_property(_interface, signature="b",
1273
access="readwrite")
931
1274
def ApprovedByDefault_dbus_property(self, value=None):
932
1275
if value is None: # get
933
1276
return dbus.Boolean(self.approved_by_default)
934
1277
self.approved_by_default = bool(value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
938
1278
939
1279
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
1280
@dbus_service_property(_interface, signature="t",
1281
access="readwrite")
942
1282
def ApprovalDelay_dbus_property(self, value=None):
943
1283
if value is None: # get
944
1284
return dbus.UInt64(self.approval_delay_milliseconds())
945
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
949
1286
950
1287
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
1288
@dbus_service_property(_interface, signature="t",
1289
access="readwrite")
953
1290
def ApprovalDuration_dbus_property(self, value=None):
954
1291
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
1292
return dbus.UInt64(timedelta_to_milliseconds(
956
1293
self.approval_duration))
957
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
961
1295
962
1296
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1297
@dbus_service_property(_interface, signature="s", access="read")
964
1298
def Name_dbus_property(self):
965
1299
return dbus.String(self.name)
966
1300
967
1301
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1302
@dbus_service_property(_interface, signature="s", access="read")
969
1303
def Fingerprint_dbus_property(self):
970
1304
return dbus.String(self.fingerprint)
971
1305
972
1306
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
1307
@dbus_service_property(_interface, signature="s",
1308
access="readwrite")
975
1309
def Host_dbus_property(self, value=None):
976
1310
if value is None: # get
977
1311
return dbus.String(self.host)
978
self.host = value
979
# Emit D-Bus signal
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
1312
self.host = unicode(value)
982
1313
983
1314
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1315
@dbus_service_property(_interface, signature="s", access="read")
985
1316
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
1317
return datetime_to_dbus(self.created)
987
1318
988
1319
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1320
@dbus_service_property(_interface, signature="s", access="read")
990
1321
def LastEnabled_dbus_property(self):
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1322
return datetime_to_dbus(self.last_enabled)
994
1323
995
1324
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
1325
@dbus_service_property(_interface, signature="b",
1326
access="readwrite")
998
1327
def Enabled_dbus_property(self, value=None):
999
1328
if value is None: # get
1000
1329
return dbus.Boolean(self.enabled)
1004
1333
self.disable()
1005
1334
1006
1335
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1336
@dbus_service_property(_interface, signature="s",
1337
access="readwrite")
1009
1338
def LastCheckedOK_dbus_property(self, value=None):
1010
1339
if value is not None:
1011
1340
self.checked_ok()
1012
1341
return
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1016
.last_checked_ok))
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)
1017
1353
1018
1354
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1355
@dbus_service_property(_interface, signature="t",
1356
access="readwrite")
1021
1357
def Timeout_dbus_property(self, value=None):
1022
1358
if value is None: # get
1023
1359
return dbus.UInt64(self.timeout_milliseconds())
1024
1360
self.timeout = datetime.timedelta(0, 0, 0, value)
1025
# Emit D-Bus signal
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1361
if getattr(self, "disable_initiator_tag", None) is None:
1029
1362
return
1030
1363
# Reschedule timeout
1031
1364
gobject.source_remove(self.disable_initiator_tag)
1032
1365
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1035
.last_checked_ok
1036
+ self.timeout)
1037
- datetime.datetime
1038
.utcnow()))
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1039
1372
if time_to_die <= 0:
1040
1373
# The timeout has passed
1041
1374
self.disable()
1042
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1043
1379
self.disable_initiator_tag = (gobject.timeout_add
1044
1380
(time_to_die, self.disable))
1045
1381
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
1046
1390
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1049
1393
def Interval_dbus_property(self, value=None):
1050
1394
if value is None: # get
1051
1395
return dbus.UInt64(self.interval_milliseconds())
1052
1396
self.interval = datetime.timedelta(0, 0, 0, value)
1053
# Emit D-Bus signal
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
1397
if getattr(self, "checker_initiator_tag", None) is None:
1057
1398
return
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
1063
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
1064
1406
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1407
@dbus_service_property(_interface, signature="s",
1408
access="readwrite")
1067
1409
def Checker_dbus_property(self, value=None):
1068
1410
if value is None: # get
1069
1411
return dbus.String(self.checker_command)
1070
self.checker_command = value
1071
# Emit D-Bus signal
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1074
variant_level=1))
1412
self.checker_command = unicode(value)
1075
1413
1076
1414
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1415
@dbus_service_property(_interface, signature="b",
1416
access="readwrite")
1079
1417
def CheckerRunning_dbus_property(self, value=None):
1080
1418
if value is None: # get
1081
1419
return dbus.Boolean(self.checker is not None)
1085
1423
self.stop_checker()
1086
1424
1087
1425
# ObjectPath - property
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
1426
@dbus_service_property(_interface, signature="o", access="read")
1089
1427
def ObjectPath_dbus_property(self):
1090
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1091
1429
1092
1430
# Secret = property
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
1095
1433
def Secret_dbus_property(self, value):
1096
1434
self.secret = str(value)
1097
1435
1104
1442
self._pipe.send(('init', fpr, address))
1105
1443
if not self._pipe.recv():
1106
1444
raise KeyError()
1107
1445
1108
1446
def __getattribute__(self, name):
1109
if(name == '_pipe'):
1447
if name == '_pipe':
1110
1448
return super(ProxyClient, self).__getattribute__(name)
1111
1449
self._pipe.send(('getattr', name))
1112
1450
data = self._pipe.recv()
1117
1455
self._pipe.send(('funcall', name, args, kwargs))
1118
1456
return self._pipe.recv()[1]
1119
1457
return func
1120
1458
1121
1459
def __setattr__(self, name, value):
1122
if(name == '_pipe'):
1460
if name == '_pipe':
1123
1461
return super(ProxyClient, self).__setattr__(name, value)
1124
1462
self._pipe.send(('setattr', name, value))
1125
1463
1126
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
1127
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
1128
1470
"""A class to handle client connections.
1129
1471
1132
1474
1133
1475
def handle(self):
1134
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
1135
logger.info(u"TCP connection from: %s",
1477
logger.info("TCP connection from: %s",
1136
1478
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
1479
logger.debug("Pipe FD: %d",
1138
1480
self.server.child_pipe.fileno())
1139
1481
1140
1482
session = (gnutls.connection
1141
1483
.ClientSession(self.request,
1142
1484
gnutls.connection
1143
1485
.X509Credentials()))
1144
1486
1145
1487
# Note: gnutls.connection.X509Credentials is really a
1146
1488
# generic GnuTLS certificate credentials object so long as
1147
1489
# no X.509 keys are added to it. Therefore, we can use it
1148
1490
# here despite using OpenPGP certificates.
1149
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1153
# u"+DHE-DSS"))
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
1154
1496
# Use a fallback default, since this MUST be set.
1155
1497
priority = self.server.gnutls_priority
1156
1498
if priority is None:
1157
priority = u"NORMAL"
1499
priority = "NORMAL"
1158
1500
(gnutls.library.functions
1159
1501
.gnutls_priority_set_direct(session._c_object,
1160
1502
priority, None))
1161
1503
1162
1504
# Start communication using the Mandos protocol
1163
1505
# Get protocol number
1164
1506
line = self.request.makefile().readline()
1165
logger.debug(u"Protocol version: %r", line)
1507
logger.debug("Protocol version: %r", line)
1166
1508
try:
1167
1509
if int(line.strip().split()[0]) > 1:
1168
1510
raise RuntimeError
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
1511
except (ValueError, IndexError, RuntimeError) as error:
1512
logger.error("Unknown protocol version: %s", error)
1171
1513
return
1172
1514
1173
1515
# Start GnuTLS connection
1174
1516
try:
1175
1517
session.handshake()
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
1518
except gnutls.errors.GNUTLSError as error:
1519
logger.warning("Handshake failed: %s", error)
1178
1520
# Do not run session.bye() here: the session is not
1179
1521
# established. Just abandon the request.
1180
1522
return
1181
logger.debug(u"Handshake succeeded")
1182
1523
logger.debug("Handshake succeeded")
1524
1183
1525
approval_required = False
1184
1526
try:
1185
1527
try:
1186
1528
fpr = self.fingerprint(self.peer_certificate
1187
1529
(session))
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1190
1533
return
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1534
logger.debug("Fingerprint: %s", fpr)
1535
1193
1536
try:
1194
1537
client = ProxyClient(child_pipe, fpr,
1195
1538
self.client_address)
1196
1539
except KeyError:
1197
1540
return
1198
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
1199
1546
if client.approval_delay:
1200
1547
delay = client.approval_delay
1201
1548
client.approvals_pending += 1
1203
1550
1204
1551
while True:
1205
1552
if not client.enabled:
1206
logger.warning(u"Client %s is disabled",
1553
logger.info("Client %s is disabled",
1207
1554
client.name)
1208
1555
if self.server.use_dbus:
1209
1556
# Emit D-Bus signal
1210
client.Rejected("Disabled")
1557
client.Rejected("Disabled")
1211
1558
return
1212
1559
1213
if client._approved or not client.approval_delay:
1560
if client.approved or not client.approval_delay:
1214
1561
#We are approved or approval is disabled
1215
1562
break
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
1563
elif client.approved is None:
1564
logger.info("Client %s needs approval",
1218
1565
client.name)
1219
1566
if self.server.use_dbus:
1220
1567
# Emit D-Bus signal
1222
1569
client.approval_delay_milliseconds(),
1223
1570
client.approved_by_default)
1224
1571
else:
1225
logger.warning(u"Client %s was not approved",
1572
logger.warning("Client %s was not approved",
1226
1573
client.name)
1227
1574
if self.server.use_dbus:
1228
1575
# Emit D-Bus signal
1230
1577
return
1231
1578
1232
1579
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
1234
1580
time = datetime.datetime.now()
1235
1581
client.changedstate.acquire()
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
1237
1585
client.changedstate.release()
1238
1586
time2 = datetime.datetime.now()
1239
1587
if (time2 - time) >= delay:
1254
1602
while sent_size < len(client.secret):
1255
1603
try:
1256
1604
sent = session.send(client.secret[sent_size:])
1257
except (gnutls.errors.GNUTLSError), error:
1605
except gnutls.errors.GNUTLSError as error:
1258
1606
logger.warning("gnutls send failed")
1259
1607
return
1260
logger.debug(u"Sent: %d, remaining: %d",
1608
logger.debug("Sent: %d, remaining: %d",
1261
1609
sent, len(client.secret)
1262
1610
- (sent_size + sent))
1263
1611
sent_size += sent
1264
1265
logger.info(u"Sending secret to %s", client.name)
1266
# bump the timeout as if seen
1267
client.checked_ok()
1612
1613
logger.info("Sending secret to %s", client.name)
1614
# bump the timeout using extended_timeout
1615
client.checked_ok(client.extended_timeout)
1268
1616
if self.server.use_dbus:
1269
1617
# Emit D-Bus signal
1270
1618
client.GotSecret()
1274
1622
client.approvals_pending -= 1
1275
1623
try:
1276
1624
session.bye()
1277
except (gnutls.errors.GNUTLSError), error:
1625
except gnutls.errors.GNUTLSError as error:
1278
1626
logger.warning("GnuTLS bye failed")
1279
1627
1280
1628
@staticmethod
1291
1639
.gnutls_certificate_get_peers
1292
1640
(session._c_object, ctypes.byref(list_size)))
1293
1641
if not bool(cert_list) and list_size.value != 0:
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
1296
1644
if list_size.value == 0:
1297
1645
return None
1298
1646
cert = cert_list[0]
1324
1672
if crtverify.value != 0:
1325
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1326
1674
raise (gnutls.errors.CertificateSecurityError
1327
(u"Verify failed"))
1675
("Verify failed"))
1328
1676
# New buffer for the fingerprint
1329
1677
buf = ctypes.create_string_buffer(20)
1330
1678
buf_len = ctypes.c_size_t()
1337
1685
# Convert the buffer to a Python bytestring
1338
1686
fpr = ctypes.string_at(buf, buf_len.value)
1339
1687
# Convert the bytestring to hexadecimal notation
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
hex_fpr = binascii.hexlify(fpr).upper()
1341
1689
return hex_fpr
1342
1690
1343
1691
1346
1694
def sub_process_main(self, request, address):
1347
1695
try:
1348
1696
self.finish_request(request, address)
1349
except:
1697
except Exception:
1350
1698
self.handle_error(request, address)
1351
1699
self.close_request(request)
1352
1700
1353
1701
def process_request(self, request, address):
1354
1702
"""Start a new process to process the request."""
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
1706
proc.start()
1707
return proc
1708
1357
1709
1358
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1359
1711
""" adds a pipe to the MixIn """
1363
1715
This function creates a new pipe in self.pipe
1364
1716
"""
1365
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1366
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
1718
1719
proc = MultiprocessingMixIn.process_request(self, request,
1720
client_address)
1369
1721
self.child_pipe.close()
1370
self.add_pipe(parent_pipe)
1371
1372
def add_pipe(self, parent_pipe):
1722
self.add_pipe(parent_pipe, proc)
1723
1724
def add_pipe(self, parent_pipe, proc):
1373
1725
"""Dummy function; override as necessary"""
1374
pass
1726
raise NotImplementedError
1727
1375
1728
1376
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1377
1730
socketserver.TCPServer, object):
1395
1748
bind to an address or port if they were not specified."""
1396
1749
if self.interface is not None:
1397
1750
if SO_BINDTODEVICE is None:
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1400
1753
self.interface)
1401
1754
else:
1402
1755
try:
1403
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1404
1757
SO_BINDTODEVICE,
1405
1758
str(self.interface
1406
+ u'\0'))
1407
except socket.error, error:
1759
+ '\0'))
1760
except socket.error as error:
1408
1761
if error[0] == errno.EPERM:
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1762
logger.error("No permission to"
1763
" bind to interface %s",
1411
1764
self.interface)
1412
1765
elif error[0] == errno.ENOPROTOOPT:
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1415
1768
self.interface)
1416
1769
else:
1417
1770
raise
1419
1772
if self.server_address[0] or self.server_address[1]:
1420
1773
if not self.server_address[0]:
1421
1774
if self.address_family == socket.AF_INET6:
1422
any_address = u"::" # in6addr_any
1775
any_address = "::" # in6addr_any
1423
1776
else:
1424
1777
any_address = socket.INADDR_ANY
1425
1778
self.server_address = (any_address,
1452
1805
self.enabled = False
1453
1806
self.clients = clients
1454
1807
if self.clients is None:
1455
self.clients = set()
1808
self.clients = {}
1456
1809
self.use_dbus = use_dbus
1457
1810
self.gnutls_priority = gnutls_priority
1458
1811
IPv6_TCPServer.__init__(self, server_address,
1462
1815
def server_activate(self):
1463
1816
if self.enabled:
1464
1817
return socketserver.TCPServer.server_activate(self)
1818
1465
1819
def enable(self):
1466
1820
self.enabled = True
1467
def add_pipe(self, parent_pipe):
1821
1822
def add_pipe(self, parent_pipe, proc):
1468
1823
# Call "handle_ipc" for both data and EOF events
1469
1824
gobject.io_add_watch(parent_pipe.fileno(),
1470
1825
gobject.IO_IN | gobject.IO_HUP,
1471
1826
functools.partial(self.handle_ipc,
1472
parent_pipe = parent_pipe))
1473
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1474
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1475
client_object=None):
1832
proc = None, client_object=None):
1476
1833
condition_names = {
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1479
1836
# blocking).
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1483
1840
# broken, usually for pipes and
1484
1841
# sockets).
1485
1842
}
1487
1844
for cond, name in
1488
1845
condition_names.iteritems()
1489
1846
if cond & condition)
1490
# error or the other end of multiprocessing.Pipe has closed
1847
# error, or the other end of multiprocessing.Pipe has closed
1491
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1849
# Wait for other process to exit
1850
proc.join()
1492
1851
return False
1493
1852
1494
1853
# Read a request from the child
1499
1858
fpr = request[1]
1500
1859
address = request[2]
1501
1860
1502
for c in self.clients:
1861
for c in self.clients.itervalues():
1503
1862
if c.fingerprint == fpr:
1504
1863
client = c
1505
1864
break
1506
1865
else:
1507
logger.warning(u"Client not found for fingerprint: %s, ad"
1508
u"dress: %s", fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
1509
1868
if self.use_dbus:
1510
1869
# Emit D-Bus signal
1511
mandos_dbus_service.ClientNotFound(fpr, address)
1870
mandos_dbus_service.ClientNotFound(fpr,
1871
address[0])
1512
1872
parent_pipe.send(False)
1513
1873
return False
1514
1874
1515
1875
gobject.io_add_watch(parent_pipe.fileno(),
1516
1876
gobject.IO_IN | gobject.IO_HUP,
1517
1877
functools.partial(self.handle_ipc,
1518
parent_pipe = parent_pipe,
1519
client_object = client))
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
1520
1883
parent_pipe.send(True)
1521
# remove the old hook in favor of the new above hook on same fileno
1884
# remove the old hook in favor of the new above hook on
1885
# same fileno
1522
1886
return False
1523
1887
if command == 'funcall':
1524
1888
funcname = request[1]
1525
1889
args = request[2]
1526
1890
kwargs = request[3]
1527
1891
1528
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1529
1892
parent_pipe.send(('data', getattr(client_object,
1893
funcname)(*args,
1894
**kwargs)))
1895
1530
1896
if command == 'getattr':
1531
1897
attrname = request[1]
1532
1898
if callable(client_object.__getattribute__(attrname)):
1533
1899
parent_pipe.send(('function',))
1534
1900
else:
1535
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1536
1903
1537
1904
if command == 'setattr':
1538
1905
attrname = request[1]
1539
1906
value = request[2]
1540
1907
setattr(client_object, attrname, value)
1541
1908
1542
1909
return True
1543
1910
1544
1911
1545
1912
def string_to_delta(interval):
1546
1913
"""Parse a string and return a datetime.timedelta
1547
1914
1548
>>> string_to_delta(u'7d')
1915
>>> string_to_delta('7d')
1549
1916
datetime.timedelta(7)
1550
>>> string_to_delta(u'60s')
1917
>>> string_to_delta('60s')
1551
1918
datetime.timedelta(0, 60)
1552
>>> string_to_delta(u'60m')
1919
>>> string_to_delta('60m')
1553
1920
datetime.timedelta(0, 3600)
1554
>>> string_to_delta(u'24h')
1921
>>> string_to_delta('24h')
1555
1922
datetime.timedelta(1)
1556
>>> string_to_delta(u'1w')
1923
>>> string_to_delta('1w')
1557
1924
datetime.timedelta(7)
1558
>>> string_to_delta(u'5m 30s')
1925
>>> string_to_delta('5m 30s')
1559
1926
datetime.timedelta(0, 330)
1560
1927
"""
1561
1928
timevalue = datetime.timedelta(0)
1563
1930
try:
1564
1931
suffix = unicode(s[-1])
1565
1932
value = int(s[:-1])
1566
if suffix == u"d":
1933
if suffix == "d":
1567
1934
delta = datetime.timedelta(value)
1568
elif suffix == u"s":
1935
elif suffix == "s":
1569
1936
delta = datetime.timedelta(0, value)
1570
elif suffix == u"m":
1937
elif suffix == "m":
1571
1938
delta = datetime.timedelta(0, 0, 0, 0, value)
1572
elif suffix == u"h":
1939
elif suffix == "h":
1573
1940
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1574
elif suffix == u"w":
1941
elif suffix == "w":
1575
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1576
1943
else:
1577
raise ValueError(u"Unknown suffix %r" % suffix)
1578
except (ValueError, IndexError), e:
1579
raise ValueError(e.message)
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
1946
raise ValueError(*(e.args))
1580
1947
timevalue += delta
1581
1948
return timevalue
1582
1949
1583
1950
1584
def if_nametoindex(interface):
1585
"""Call the C function if_nametoindex(), or equivalent
1586
1587
Note: This function cannot accept a unicode string."""
1588
global if_nametoindex
1589
try:
1590
if_nametoindex = (ctypes.cdll.LoadLibrary
1591
(ctypes.util.find_library(u"c"))
1592
.if_nametoindex)
1593
except (OSError, AttributeError):
1594
logger.warning(u"Doing if_nametoindex the hard way")
1595
def if_nametoindex(interface):
1596
"Get an interface index the hard way, i.e. using fcntl()"
1597
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1598
with contextlib.closing(socket.socket()) as s:
1599
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1600
struct.pack(str(u"16s16x"),
1601
interface))
1602
interface_index = struct.unpack(str(u"I"),
1603
ifreq[16:20])[0]
1604
return interface_index
1605
return if_nametoindex(interface)
1606
1607
1608
1951
def daemon(nochdir = False, noclose = False):
1609
1952
"""See daemon(3). Standard BSD Unix function.
1610
1953
1613
1956
sys.exit()
1614
1957
os.setsid()
1615
1958
if not nochdir:
1616
os.chdir(u"/")
1959
os.chdir("/")
1617
1960
if os.fork():
1618
1961
sys.exit()
1619
1962
if not noclose:
1621
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1622
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
1623
1966
raise OSError(errno.ENODEV,
1624
u"%s not a character device"
1967
"%s not a character device"
1625
1968
% os.path.devnull)
1626
1969
os.dup2(null, sys.stdin.fileno())
1627
1970
os.dup2(null, sys.stdout.fileno())
1635
1978
##################################################################
1636
1979
# Parsing of options, both command line and config file
1637
1980
1638
parser = optparse.OptionParser(version = "%%prog %s" % version)
1639
parser.add_option("-i", u"--interface", type=u"string",
1640
metavar="IF", help=u"Bind to interface IF")
1641
parser.add_option("-a", u"--address", type=u"string",
1642
help=u"Address to listen for requests on")
1643
parser.add_option("-p", u"--port", type=u"int",
1644
help=u"Port number to receive requests on")
1645
parser.add_option("--check", action=u"store_true",
1646
help=u"Run self-test")
1647
parser.add_option("--debug", action=u"store_true",
1648
help=u"Debug mode; run in foreground and log to"
1649
u" terminal")
1650
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1651
help=u"Debug level for stdout output")
1652
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1653
u" priority string (see GnuTLS documentation)")
1654
parser.add_option("--servicename", type=u"string",
1655
metavar=u"NAME", help=u"Zeroconf service name")
1656
parser.add_option("--configdir", type=u"string",
1657
default=u"/etc/mandos", metavar=u"DIR",
1658
help=u"Directory to search for configuration"
1659
u" files")
1660
parser.add_option("--no-dbus", action=u"store_false",
1661
dest=u"use_dbus", help=u"Do not provide D-Bus"
1662
u" system bus interface")
1663
parser.add_option("--no-ipv6", action=u"store_false",
1664
dest=u"use_ipv6", help=u"Do not use IPv6")
1665
options = parser.parse_args()[0]
1981
parser = argparse.ArgumentParser()
1982
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
1984
help="show version number and exit")
1985
parser.add_argument("-i", "--interface", metavar="IF",
1986
help="Bind to interface IF")
1987
parser.add_argument("-a", "--address",
1988
help="Address to listen for requests on")
1989
parser.add_argument("-p", "--port", type=int,
1990
help="Port number to receive requests on")
1991
parser.add_argument("--check", action="store_true",
1992
help="Run self-test")
1993
parser.add_argument("--debug", action="store_true",
1994
help="Debug mode; run in foreground and log"
1995
" to terminal")
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
help="Debug level for stdout output")
1998
parser.add_argument("--priority", help="GnuTLS"
1999
" priority string (see GnuTLS documentation)")
2000
parser.add_argument("--servicename",
2001
metavar="NAME", help="Zeroconf service name")
2002
parser.add_argument("--configdir",
2003
default="/etc/mandos", metavar="DIR",
2004
help="Directory to search for configuration"
2005
" files")
2006
parser.add_argument("--no-dbus", action="store_false",
2007
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2009
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2011
parser.add_argument("--no-restore", action="store_false",
2012
dest="restore", help="Do not restore stored"
2013
" state")
2014
parser.add_argument("--statedir", metavar="DIR",
2015
help="Directory to save/restore state in")
2016
2017
options = parser.parse_args()
1666
2018
1667
2019
if options.check:
1668
2020
import doctest
1670
2022
sys.exit()
1671
2023
1672
2024
# Default values for config file for server-global settings
1673
server_defaults = { u"interface": u"",
1674
u"address": u"",
1675
u"port": u"",
1676
u"debug": u"False",
1677
u"priority":
1678
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1679
u"servicename": u"Mandos",
1680
u"use_dbus": u"True",
1681
u"use_ipv6": u"True",
1682
u"debuglevel": u"",
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
1683
2037
}
1684
2038
1685
2039
# Parse config file for server-global settings
1686
2040
server_config = configparser.SafeConfigParser(server_defaults)
1687
2041
del server_defaults
1688
2042
server_config.read(os.path.join(options.configdir,
1689
u"mandos.conf"))
2043
"mandos.conf"))
1690
2044
# Convert the SafeConfigParser object to a dict
1691
2045
server_settings = server_config.defaults()
1692
2046
# Use the appropriate methods on the non-string config options
1693
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1694
server_settings[option] = server_config.getboolean(u"DEFAULT",
2047
for option in ("debug", "use_dbus", "use_ipv6"):
2048
server_settings[option] = server_config.getboolean("DEFAULT",
1695
2049
option)
1696
2050
if server_settings["port"]:
1697
server_settings["port"] = server_config.getint(u"DEFAULT",
1698
u"port")
2051
server_settings["port"] = server_config.getint("DEFAULT",
2052
"port")
1699
2053
del server_config
1700
2054
1701
2055
# Override the settings from the config file with command line
1702
2056
# options, if set.
1703
for option in (u"interface", u"address", u"port", u"debug",
1704
u"priority", u"servicename", u"configdir",
1705
u"use_dbus", u"use_ipv6", u"debuglevel"):
2057
for option in ("interface", "address", "port", "debug",
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
1706
2061
value = getattr(options, option)
1707
2062
if value is not None:
1708
2063
server_settings[option] = value
1716
2071
##################################################################
1717
2072
1718
2073
# For convenience
1719
debug = server_settings[u"debug"]
1720
debuglevel = server_settings[u"debuglevel"]
1721
use_dbus = server_settings[u"use_dbus"]
1722
use_ipv6 = server_settings[u"use_ipv6"]
1723
1724
if server_settings[u"servicename"] != u"Mandos":
2074
debug = server_settings["debug"]
2075
debuglevel = server_settings["debuglevel"]
2076
use_dbus = server_settings["use_dbus"]
2077
use_ipv6 = server_settings["use_ipv6"]
2078
stored_state_path = os.path.join(server_settings["statedir"],
2079
stored_state_file)
2080
2081
if debug:
2082
initlogger(debug, logging.DEBUG)
2083
else:
2084
if not debuglevel:
2085
initlogger(debug)
2086
else:
2087
level = getattr(logging, debuglevel.upper())
2088
initlogger(debug, level)
2089
2090
if server_settings["servicename"] != "Mandos":
1725
2091
syslogger.setFormatter(logging.Formatter
1726
(u'Mandos (%s) [%%(process)d]:'
1727
u' %%(levelname)s: %%(message)s'
1728
% server_settings[u"servicename"]))
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
1729
2095
1730
2096
# Parse config file with clients
1731
client_defaults = { u"timeout": u"1h",
1732
u"interval": u"5m",
1733
u"checker": u"fping -q -- %%(host)s",
1734
u"host": u"",
1735
u"approval_delay": u"0s",
1736
u"approval_duration": u"1s",
1737
}
1738
client_config = configparser.SafeConfigParser(client_defaults)
1739
client_config.read(os.path.join(server_settings[u"configdir"],
1740
u"clients.conf"))
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2098
client_config.read(os.path.join(server_settings["configdir"],
2099
"clients.conf"))
1741
2100
1742
2101
global mandos_dbus_service
1743
2102
mandos_dbus_service = None
1744
2103
1745
tcp_server = MandosServer((server_settings[u"address"],
1746
server_settings[u"port"]),
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
1747
2106
ClientHandler,
1748
interface=(server_settings[u"interface"]
2107
interface=(server_settings["interface"]
1749
2108
or None),
1750
2109
use_ipv6=use_ipv6,
1751
2110
gnutls_priority=
1752
server_settings[u"priority"],
2111
server_settings["priority"],
1753
2112
use_dbus=use_dbus)
1754
pidfilename = u"/var/run/mandos.pid"
1755
try:
1756
pidfile = open(pidfilename, u"w")
1757
except IOError:
1758
logger.error(u"Could not open file %r", pidfilename)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2115
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
1759
2119
1760
2120
try:
1761
uid = pwd.getpwnam(u"_mandos").pw_uid
1762
gid = pwd.getpwnam(u"_mandos").pw_gid
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
1763
2123
except KeyError:
1764
2124
try:
1765
uid = pwd.getpwnam(u"mandos").pw_uid
1766
gid = pwd.getpwnam(u"mandos").pw_gid
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
1767
2127
except KeyError:
1768
2128
try:
1769
uid = pwd.getpwnam(u"nobody").pw_uid
1770
gid = pwd.getpwnam(u"nobody").pw_gid
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
1771
2131
except KeyError:
1772
2132
uid = 65534
1773
2133
gid = 65534
1774
2134
try:
1775
2135
os.setgid(gid)
1776
2136
os.setuid(uid)
1777
except OSError, error:
2137
except OSError as error:
1778
2138
if error[0] != errno.EPERM:
1779
2139
raise error
1780
2140
1781
if not debug and not debuglevel:
1782
syslogger.setLevel(logging.WARNING)
1783
console.setLevel(logging.WARNING)
1784
if debuglevel:
1785
level = getattr(logging, debuglevel.upper())
1786
syslogger.setLevel(level)
1787
console.setLevel(level)
1788
1789
2141
if debug:
1790
2142
# Enable all possible GnuTLS debugging
1791
2143
1795
2147
1796
2148
@gnutls.library.types.gnutls_log_func
1797
2149
def debug_gnutls(level, string):
1798
logger.debug(u"GnuTLS: %s", string[:-1])
2150
logger.debug("GnuTLS: %s", string[:-1])
1799
2151
1800
2152
(gnutls.library.functions
1801
2153
.gnutls_global_set_log_function(debug_gnutls))
1805
2157
os.dup2(null, sys.stdin.fileno())
1806
2158
if null > 2:
1807
2159
os.close(null)
1808
else:
1809
# No console logging
1810
logger.removeHandler(console)
1811
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()
1812
2167
1813
2168
global main_loop
1814
2169
# From the Avahi example code
1818
2173
# End of Avahi example code
1819
2174
if use_dbus:
1820
2175
try:
1821
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1822
2177
bus, do_not_queue=True)
1823
except dbus.exceptions.NameExistsException, e:
1824
logger.error(unicode(e) + u", disabling D-Bus")
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
1825
2183
use_dbus = False
1826
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1827
2185
tcp_server.use_dbus = False
1828
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1829
service = AvahiService(name = server_settings[u"servicename"],
1830
servicetype = u"_mandos._tcp",
1831
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1832
2191
if server_settings["interface"]:
1833
2192
service.interface = (if_nametoindex
1834
(str(server_settings[u"interface"])))
1835
1836
if not debug:
1837
# Close all input and output, do double fork, etc.
1838
daemon()
1839
2193
(str(server_settings["interface"])))
2194
1840
2195
global multiprocessing_manager
1841
2196
multiprocessing_manager = multiprocessing.Manager()
1842
2197
1843
2198
client_class = Client
1844
2199
if use_dbus:
1845
client_class = functools.partial(ClientDBus, bus = bus)
1846
def client_config_items(config, section):
1847
special_settings = {
1848
"approved_by_default":
1849
lambda: config.getboolean(section,
1850
"approved_by_default"),
1851
}
1852
for name, value in config.items(section):
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2205
clients_data = {}
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2222
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2231
try:
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
client[name] = value
2239
except KeyError:
2240
pass
2241
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2249
logger.warning(
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2255
logger.warning(
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2261
else:
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
1853
2266
try:
1854
yield (name, special_settings[name]())
1855
except KeyError:
1856
yield (name, value)
1857
1858
tcp_server.clients.update(set(
1859
client_class(name = section,
1860
config= dict(client_config_items(
1861
client_config, section)))
1862
for section in client_config.sections()))
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
2271
except PGPError:
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2277
2278
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2284
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
2289
1863
2290
if not tcp_server.clients:
1864
logger.warning(u"No clients defined")
2291
logger.warning("No clients defined")
1865
2292
1866
try:
1867
with pidfile:
1868
pid = os.getpid()
1869
pidfile.write(str(pid) + "\n")
1870
del pidfile
1871
except IOError:
1872
logger.error(u"Could not write to file %r with PID %d",
1873
pidfilename, pid)
1874
except NameError:
1875
# "pidfile" was never created
1876
pass
1877
del pidfilename
1878
1879
2293
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
2305
del pidfilename
1880
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
1881
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1882
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1883
2310
1885
2312
class MandosDBusService(dbus.service.Object):
1886
2313
"""A D-Bus proxy object"""
1887
2314
def __init__(self):
1888
dbus.service.Object.__init__(self, bus, u"/")
1889
_interface = u"se.bsnet.fukt.Mandos"
2315
dbus.service.Object.__init__(self, bus, "/")
2316
_interface = "se.recompile.Mandos"
1890
2317
1891
@dbus.service.signal(_interface, signature=u"o")
2318
@dbus.service.signal(_interface, signature="o")
1892
2319
def ClientAdded(self, objpath):
1893
2320
"D-Bus signal"
1894
2321
pass
1895
2322
1896
@dbus.service.signal(_interface, signature=u"ss")
2323
@dbus.service.signal(_interface, signature="ss")
1897
2324
def ClientNotFound(self, fingerprint, address):
1898
2325
"D-Bus signal"
1899
2326
pass
1900
2327
1901
@dbus.service.signal(_interface, signature=u"os")
2328
@dbus.service.signal(_interface, signature="os")
1902
2329
def ClientRemoved(self, objpath, name):
1903
2330
"D-Bus signal"
1904
2331
pass
1905
2332
1906
@dbus.service.method(_interface, out_signature=u"ao")
2333
@dbus.service.method(_interface, out_signature="ao")
1907
2334
def GetAllClients(self):
1908
2335
"D-Bus method"
1909
2336
return dbus.Array(c.dbus_object_path
1910
for c in tcp_server.clients)
2337
for c in
2338
tcp_server.clients.itervalues())
1911
2339
1912
2340
@dbus.service.method(_interface,
1913
out_signature=u"a{oa{sv}}")
2341
out_signature="a{oa{sv}}")
1914
2342
def GetAllClientsWithProperties(self):
1915
2343
"D-Bus method"
1916
2344
return dbus.Dictionary(
1917
((c.dbus_object_path, c.GetAll(u""))
1918
for c in tcp_server.clients),
1919
signature=u"oa{sv}")
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
2347
signature="oa{sv}")
1920
2348
1921
@dbus.service.method(_interface, in_signature=u"o")
2349
@dbus.service.method(_interface, in_signature="o")
1922
2350
def RemoveClient(self, object_path):
1923
2351
"D-Bus method"
1924
for c in tcp_server.clients:
2352
for c in tcp_server.clients.itervalues():
1925
2353
if c.dbus_object_path == object_path:
1926
tcp_server.clients.remove(c)
2354
del tcp_server.clients[c.name]
1927
2355
c.remove_from_connection()
1928
2356
# Don't signal anything except ClientRemoved
1929
2357
c.disable(quiet=True)
1934
2362
1935
2363
del _interface
1936
2364
1937
mandos_dbus_service = MandosDBusService()
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
1938
2368
1939
2369
def cleanup():
1940
2370
"Cleanup function; run on exit"
1941
2371
service.cleanup()
1942
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
1943
2426
while tcp_server.clients:
1944
client = tcp_server.clients.pop()
2427
name, client = tcp_server.clients.popitem()
1945
2428
if use_dbus:
1946
2429
client.remove_from_connection()
1947
client.disable_hook = None
1948
2430
# Don't signal anything except ClientRemoved
1949
2431
client.disable(quiet=True)
1950
2432
if use_dbus:
1951
2433
# Emit D-Bus signal
1952
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
1953
2436
client.name)
2437
client_settings.clear()
1954
2438
1955
2439
atexit.register(cleanup)
1956
2440
1957
for client in tcp_server.clients:
2441
for client in tcp_server.clients.itervalues():
1958
2442
if use_dbus:
1959
2443
# Emit D-Bus signal
1960
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1961
client.enable()
2445
# Need to initiate checking of clients
2446
if client.enabled:
2447
client.init_checker()
1962
2448
1963
2449
tcp_server.enable()
1964
2450
tcp_server.server_activate()
1966
2452
# Find out what port we got
1967
2453
service.port = tcp_server.socket.getsockname()[1]
1968
2454
if use_ipv6:
1969
logger.info(u"Now listening on address %r, port %d,"
2455
logger.info("Now listening on address %r, port %d,"
1970
2456
" flowinfo %d, scope_id %d"
1971
2457
% tcp_server.socket.getsockname())
1972
2458
else: # IPv4
1973
logger.info(u"Now listening on address %r, port %d"
2459
logger.info("Now listening on address %r, port %d"
1974
2460
% tcp_server.socket.getsockname())
1975
2461
1976
2462
#service.interface = tcp_server.socket.getsockname()[3]
1979
2465
# From the Avahi example code
1980
2466
try:
1981
2467
service.activate()
1982
except dbus.exceptions.DBusException, error:
1983
logger.critical(u"DBusException: %s", error)
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
1984
2470
cleanup()
1985
2471
sys.exit(1)
1986
2472
# End of Avahi example code
1990
2476
(tcp_server.handle_request
1991
2477
(*args[2:], **kwargs) or True))
1992
2478
1993
logger.debug(u"Starting main loop")
2479
logger.debug("Starting main loop")
1994
2480
main_loop.run()
1995
except AvahiError, error:
1996
logger.critical(u"AvahiError: %s", error)
2481
except AvahiError as error:
2482
logger.critical("AvahiError: %s", error)
1997
2483
cleanup()
1998
2484
sys.exit(1)
1999
2485
except KeyboardInterrupt:
2000
2486
if debug:
2001
print >> sys.stderr
2002
logger.debug(u"Server received KeyboardInterrupt")
2003
logger.debug(u"Server exiting")
2487
print("", file=sys.stderr)
2488
logger.debug("Server received KeyboardInterrupt")
2489
logger.debug("Server exiting")
2004
2490
# Must run before the D-Bus bus name gets deregistered
2005
2491
cleanup()
2006
2492
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0