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- Committer: Teddy Hogeborn
- Date: 2009-10-18 08:47:40 UTC
- Revision ID: teddy@fukt.bsnet.se-20091018084740-fa1qgm22lg125r10
* plugins.d/splashy.c: Use exit codes from <sysexits.h>.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
31
# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
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55
import logging
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56
import logging.handlers
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57
import pwd
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import contextlib
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from contextlib import closing
60
59
import struct
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60
import fcntl
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61
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
import itertools
69
62
70
63
import dbus
71
64
import dbus.service
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69
import ctypes.util
77
70
import xml.dom.minidom
78
71
import inspect
79
import GnuPGInterface
80
72
81
73
try:
82
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
86
78
except ImportError:
87
79
SO_BINDTODEVICE = None
88
80
89
version = "1.5.3"
90
stored_state_file = "clients.pickle"
91
92
logger = logging.getLogger()
81
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version = "1.0.12"
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84
logger = logging.Logger(u'mandos')
93
85
syslogger = (logging.handlers.SysLogHandler
94
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
119
' %(message)s'))
120
logger.addHandler(syslogger)
121
122
if debug:
123
console = logging.StreamHandler()
124
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
125
' [%(process)d]:'
126
' %(levelname)s:'
127
' %(message)s'))
128
logger.addHandler(console)
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logger.setLevel(level)
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131
132
class PGPError(Exception):
133
"""Exception if encryption/decryption fails"""
134
pass
135
136
137
class PGPEngine(object):
138
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
def __init__(self):
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
142
self.gnupg = GnuPGInterface.GnuPG()
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self.gnupg.options.meta_interactive = False
144
self.gnupg.options.homedir = self.tempdir
145
self.gnupg.options.extra_args.extend(['--force-mdc',
146
'--quiet',
147
'--no-use-agent'])
148
149
def __enter__(self):
150
return self
151
152
def __exit__ (self, exc_type, exc_value, traceback):
153
self._cleanup()
154
return False
155
156
def __del__(self):
157
self._cleanup()
158
159
def _cleanup(self):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
164
for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
176
177
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
180
try:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
185
f.write(data)
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
188
proc.wait()
189
except IOError as e:
190
raise PGPError(e)
191
self.gnupg.passphrase = None
192
return ciphertext
193
194
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
197
try:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
202
f.write(data)
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
205
proc.wait()
206
except IOError as e:
207
raise PGPError(e)
208
self.gnupg.passphrase = None
209
return decrypted_plaintext
210
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
211
98
212
99
class AvahiError(Exception):
213
100
def __init__(self, value, *args, **kwargs):
229
116
Attributes:
230
117
interface: integer; avahi.IF_UNSPEC or an interface index.
231
118
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
234
121
See <http://www.dns-sd.org/ServiceTypes.html>
235
122
port: integer; what port to announce
236
123
TXT: list of strings; TXT record for the service
243
130
server: D-Bus Server
244
131
bus: dbus.SystemBus()
245
132
"""
246
247
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
248
134
servicetype = None, port = None, TXT = None,
249
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
250
136
protocol = avahi.PROTO_UNSPEC, bus = None):
251
137
self.interface = interface
252
138
self.name = name
261
147
self.group = None # our entry group
262
148
self.server = None
263
149
self.bus = bus
264
self.entry_group_state_changed_match = None
265
266
150
def rename(self):
267
151
"""Derived from the Avahi example code"""
268
152
if self.rename_count >= self.max_renames:
269
logger.critical("No suitable Zeroconf service name found"
270
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
271
155
self.rename_count)
272
raise AvahiServiceError("Too many renames")
273
self.name = unicode(self.server
274
.GetAlternativeServiceName(self.name))
275
logger.info("Changing Zeroconf service name to %r ...",
276
self.name)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
277
164
self.remove()
278
try:
279
self.add()
280
except dbus.exceptions.DBusException as error:
281
logger.critical("D-Bus Exception", exc_info=error)
282
self.cleanup()
283
os._exit(1)
165
self.add()
284
166
self.rename_count += 1
285
286
167
def remove(self):
287
168
"""Derived from the Avahi example code"""
288
if self.entry_group_state_changed_match is not None:
289
self.entry_group_state_changed_match.remove()
290
self.entry_group_state_changed_match = None
291
169
if self.group is not None:
292
170
self.group.Reset()
293
294
171
def add(self):
295
172
"""Derived from the Avahi example code"""
296
self.remove()
297
173
if self.group is None:
298
174
self.group = dbus.Interface(
299
175
self.bus.get_object(avahi.DBUS_NAME,
300
176
self.server.EntryGroupNew()),
301
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
302
self.entry_group_state_changed_match = (
303
self.group.connect_to_signal(
304
'StateChanged', self.entry_group_state_changed))
305
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
306
182
self.name, self.type)
307
183
self.group.AddService(
308
184
self.interface,
313
189
dbus.UInt16(self.port),
314
190
avahi.string_array_to_txt_array(self.TXT))
315
191
self.group.Commit()
316
317
192
def entry_group_state_changed(self, state, error):
318
193
"""Derived from the Avahi example code"""
319
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
320
195
321
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
322
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
323
198
elif state == avahi.ENTRY_GROUP_COLLISION:
324
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
325
200
self.rename()
326
201
elif state == avahi.ENTRY_GROUP_FAILURE:
327
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
328
203
unicode(error))
329
raise AvahiGroupError("State changed: {0!s}"
330
.format(error))
331
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
332
206
def cleanup(self):
333
207
"""Derived from the Avahi example code"""
334
208
if self.group is not None:
335
try:
336
self.group.Free()
337
except (dbus.exceptions.UnknownMethodException,
338
dbus.exceptions.DBusException):
339
pass
209
self.group.Free()
340
210
self.group = None
341
self.remove()
342
343
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
344
212
"""Derived from the Avahi example code"""
345
logger.debug("Avahi server state change: %i", state)
346
bad_states = { avahi.SERVER_INVALID:
347
"Zeroconf server invalid",
348
avahi.SERVER_REGISTERING: None,
349
avahi.SERVER_COLLISION:
350
"Zeroconf server name collision",
351
avahi.SERVER_FAILURE:
352
"Zeroconf server failure" }
353
if state in bad_states:
354
if bad_states[state] is not None:
355
if error is None:
356
logger.error(bad_states[state])
357
else:
358
logger.error(bad_states[state] + ": %r", error)
359
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
360
216
elif state == avahi.SERVER_RUNNING:
361
217
self.add()
362
else:
363
if error is None:
364
logger.debug("Unknown state: %r", state)
365
else:
366
logger.debug("Unknown state: %r: %r", state, error)
367
368
218
def activate(self):
369
219
"""Derived from the Avahi example code"""
370
220
if self.server is None:
371
221
self.server = dbus.Interface(
372
222
self.bus.get_object(avahi.DBUS_NAME,
373
avahi.DBUS_PATH_SERVER,
374
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
375
224
avahi.DBUS_INTERFACE_SERVER)
376
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
377
226
self.server_state_changed)
378
227
self.server_state_changed(self.server.GetState())
379
228
380
class AvahiServiceToSyslog(AvahiService):
381
def rename(self):
382
"""Add the new name to the syslog messages"""
383
ret = AvahiService.rename(self)
384
syslogger.setFormatter(logging.Formatter
385
('Mandos ({0}) [%(process)d]:'
386
' %(levelname)s: %(message)s'
387
.format(self.name)))
388
return ret
389
390
def timedelta_to_milliseconds(td):
391
"Convert a datetime.timedelta() to milliseconds"
392
return ((td.days * 24 * 60 * 60 * 1000)
393
+ (td.seconds * 1000)
394
+ (td.microseconds // 1000))
395
229
396
230
class Client(object):
397
231
"""A representation of a client host served by this server.
398
232
399
233
Attributes:
400
approved: bool(); 'None' if not yet approved/disapproved
401
approval_delay: datetime.timedelta(); Time to wait for approval
402
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
403
248
checker: subprocess.Popen(); a running checker process used
404
249
to see if the client lives.
405
250
'None' if no process is running.
406
checker_callback_tag: a gobject event source tag, or None
407
checker_command: string; External command which is run to check
408
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
409
256
runtime with vars(self) as dict, so that for
410
257
instance %(name)s can be used in the command.
411
checker_initiator_tag: a gobject event source tag, or None
412
created: datetime.datetime(); (UTC) object creation
413
client_structure: Object describing what attributes a client has
414
and is used for storing the client at exit
415
258
current_checker_command: string; current running checker_command
416
disable_initiator_tag: a gobject event source tag, or None
417
enabled: bool()
418
fingerprint: string (40 or 32 hexadecimal digits); used to
419
uniquely identify the client
420
host: string; available for use by the checker command
421
interval: datetime.timedelta(); How often to start a new checker
422
last_approval_request: datetime.datetime(); (UTC) or None
423
last_checked_ok: datetime.datetime(); (UTC) or None
424
last_checker_status: integer between 0 and 255 reflecting exit
425
status of last checker. -1 reflects crashed
426
checker, -2 means no checker completed yet.
427
last_enabled: datetime.datetime(); (UTC) or None
428
name: string; from the config file, used in log messages and
429
D-Bus identifiers
430
secret: bytestring; sent verbatim (over TLS) to client
431
timeout: datetime.timedelta(); How long from last_checked_ok
432
until this client is disabled
433
extended_timeout: extra long timeout when secret has been sent
434
runtime_expansions: Allowed attributes for runtime expansion.
435
expires: datetime.datetime(); time (UTC) when a client will be
436
disabled, or None
437
259
"""
438
260
439
runtime_expansions = ("approval_delay", "approval_duration",
440
"created", "enabled", "fingerprint",
441
"host", "interval", "last_checked_ok",
442
"last_enabled", "name", "timeout")
443
client_defaults = { "timeout": "5m",
444
"extended_timeout": "15m",
445
"interval": "2m",
446
"checker": "fping -q -- %%(host)s",
447
"host": "",
448
"approval_delay": "0s",
449
"approval_duration": "1s",
450
"approved_by_default": "True",
451
"enabled": "True",
452
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
453
267
454
268
def timeout_milliseconds(self):
455
269
"Return the 'timeout' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.timeout)
457
458
def extended_timeout_milliseconds(self):
459
"Return the 'extended_timeout' attribute in milliseconds"
460
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
461
271
462
272
def interval_milliseconds(self):
463
273
"Return the 'interval' attribute in milliseconds"
464
return timedelta_to_milliseconds(self.interval)
465
466
def approval_delay_milliseconds(self):
467
return timedelta_to_milliseconds(self.approval_delay)
468
469
@staticmethod
470
def config_parser(config):
471
"""Construct a new dict of client settings of this form:
472
{ client_name: {setting_name: value, ...}, ...}
473
with exceptions for any special settings as defined above.
474
NOTE: Must be a pure function. Must return the same result
475
value given the same arguments.
476
"""
477
settings = {}
478
for client_name in config.sections():
479
section = dict(config.items(client_name))
480
client = settings[client_name] = {}
481
482
client["host"] = section["host"]
483
# Reformat values from string types to Python types
484
client["approved_by_default"] = config.getboolean(
485
client_name, "approved_by_default")
486
client["enabled"] = config.getboolean(client_name,
487
"enabled")
488
489
client["fingerprint"] = (section["fingerprint"].upper()
490
.replace(" ", ""))
491
if "secret" in section:
492
client["secret"] = section["secret"].decode("base64")
493
elif "secfile" in section:
494
with open(os.path.expanduser(os.path.expandvars
495
(section["secfile"])),
496
"rb") as secfile:
497
client["secret"] = secfile.read()
498
else:
499
raise TypeError("No secret or secfile for section {0}"
500
.format(section))
501
client["timeout"] = string_to_delta(section["timeout"])
502
client["extended_timeout"] = string_to_delta(
503
section["extended_timeout"])
504
client["interval"] = string_to_delta(section["interval"])
505
client["approval_delay"] = string_to_delta(
506
section["approval_delay"])
507
client["approval_duration"] = string_to_delta(
508
section["approval_duration"])
509
client["checker_command"] = section["checker"]
510
client["last_approval_request"] = None
511
client["last_checked_ok"] = None
512
client["last_checker_status"] = -2
513
514
return settings
515
516
def __init__(self, settings, name = None):
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
517
280
self.name = name
518
# adding all client settings
519
for setting, value in settings.iteritems():
520
setattr(self, setting, value)
521
522
if self.enabled:
523
if not hasattr(self, "last_enabled"):
524
self.last_enabled = datetime.datetime.utcnow()
525
if not hasattr(self, "expires"):
526
self.expires = (datetime.datetime.utcnow()
527
+ self.timeout)
528
else:
529
self.last_enabled = None
530
self.expires = None
531
532
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
533
284
# Uppercase and remove spaces from fingerprint for later
534
285
# comparison purposes with return value from the fingerprint()
535
286
# function
536
logger.debug(" Fingerprint: %s", self.fingerprint)
537
self.created = settings.get("created",
538
datetime.datetime.utcnow())
539
540
# attributes specific for this server instance
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
297
self.secret = secfile.read()
298
else:
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
541
309
self.checker = None
542
310
self.checker_initiator_tag = None
543
311
self.disable_initiator_tag = None
544
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
545
314
self.current_checker_command = None
546
self.approved = None
547
self.approvals_pending = 0
548
self.changedstate = (multiprocessing_manager
549
.Condition(multiprocessing_manager
550
.Lock()))
551
self.client_structure = [attr for attr in
552
self.__dict__.iterkeys()
553
if not attr.startswith("_")]
554
self.client_structure.append("client_structure")
555
556
for name, t in inspect.getmembers(type(self),
557
lambda obj:
558
isinstance(obj,
559
property)):
560
if not name.startswith("_"):
561
self.client_structure.append(name)
562
563
# Send notice to process children that client state has changed
564
def send_changedstate(self):
565
with self.changedstate:
566
self.changedstate.notify_all()
315
self.last_connect = None
567
316
568
317
def enable(self):
569
318
"""Start this client's checker and timeout hooks"""
570
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
571
320
# Already enabled
572
321
return
573
self.send_changedstate()
574
self.expires = datetime.datetime.utcnow() + self.timeout
575
self.enabled = True
576
322
self.last_enabled = datetime.datetime.utcnow()
577
self.init_checker()
578
579
def disable(self, quiet=True):
580
"""Disable this client."""
581
if not getattr(self, "enabled", False):
582
return False
583
if not quiet:
584
self.send_changedstate()
585
if not quiet:
586
logger.info("Disabling client %s", self.name)
587
if getattr(self, "disable_initiator_tag", False):
588
gobject.source_remove(self.disable_initiator_tag)
589
self.disable_initiator_tag = None
590
self.expires = None
591
if getattr(self, "checker_initiator_tag", False):
592
gobject.source_remove(self.checker_initiator_tag)
593
self.checker_initiator_tag = None
594
self.stop_checker()
595
self.enabled = False
596
# Do not run this again if called by a gobject.timeout_add
597
return False
598
599
def __del__(self):
600
self.disable()
601
602
def init_checker(self):
603
323
# Schedule a new checker to be started an 'interval' from now,
604
324
# and every interval from then on.
605
325
self.checker_initiator_tag = (gobject.timeout_add
606
326
(self.interval_milliseconds(),
607
327
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
608
330
# Schedule a disable() when 'timeout' has passed
609
331
self.disable_initiator_tag = (gobject.timeout_add
610
332
(self.timeout_milliseconds(),
611
333
self.disable))
612
# Also start a new checker *right now*.
613
self.start_checker()
334
self.enabled = True
335
336
def disable(self):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
346
self.checker_initiator_tag = None
347
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
350
self.enabled = False
351
# Do not run this again if called by a gobject.timeout_add
352
return False
353
354
def __del__(self):
355
self.disable_hook = None
356
self.disable()
614
357
615
358
def checker_callback(self, pid, condition, command):
616
359
"""The checker has completed, so take appropriate actions."""
617
360
self.checker_callback_tag = None
618
361
self.checker = None
619
362
if os.WIFEXITED(condition):
620
self.last_checker_status = os.WEXITSTATUS(condition)
621
if self.last_checker_status == 0:
622
logger.info("Checker for %(name)s succeeded",
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
623
366
vars(self))
624
367
self.checked_ok()
625
368
else:
626
logger.info("Checker for %(name)s failed",
369
logger.info(u"Checker for %(name)s failed",
627
370
vars(self))
628
371
else:
629
self.last_checker_status = -1
630
logger.warning("Checker for %(name)s crashed?",
372
logger.warning(u"Checker for %(name)s crashed?",
631
373
vars(self))
632
374
633
375
def checked_ok(self):
634
"""Assert that the client has been seen, alive and well."""
376
"""Bump up the timeout for this client.
377
378
This should only be called when the client has been seen,
379
alive and well.
380
"""
635
381
self.last_checked_ok = datetime.datetime.utcnow()
636
self.last_checker_status = 0
637
self.bump_timeout()
638
639
def bump_timeout(self, timeout=None):
640
"""Bump up the timeout for this client."""
641
if timeout is None:
642
timeout = self.timeout
643
if self.disable_initiator_tag is not None:
644
gobject.source_remove(self.disable_initiator_tag)
645
if getattr(self, "enabled", False):
646
self.disable_initiator_tag = (gobject.timeout_add
647
(timedelta_to_milliseconds
648
(timeout), self.disable))
649
self.expires = datetime.datetime.utcnow() + timeout
650
651
def need_approval(self):
652
self.last_approval_request = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
653
386
654
387
def start_checker(self):
655
388
"""Start a new checker subprocess if one is not running.
662
395
# client would inevitably timeout, since no checker would get
663
396
# a chance to run to completion. If we instead leave running
664
397
# checkers alone, the checker would have to take more time
665
# than 'timeout' for the client to be disabled, which is as it
666
# should be.
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
667
400
668
401
# If a checker exists, make sure it is not a zombie
669
402
try:
670
403
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
except (AttributeError, OSError) as error:
404
except (AttributeError, OSError), error:
672
405
if (isinstance(error, OSError)
673
406
and error.errno != errno.ECHILD):
674
407
raise error
675
408
else:
676
409
if pid:
677
logger.warning("Checker was a zombie")
410
logger.warning(u"Checker was a zombie")
678
411
gobject.source_remove(self.checker_callback_tag)
679
412
self.checker_callback(pid, status,
680
413
self.current_checker_command)
685
418
command = self.checker_command % self.host
686
419
except TypeError:
687
420
# Escape attributes for the shell
688
escaped_attrs = dict(
689
(attr,
690
re.escape(unicode(str(getattr(self, attr, "")),
691
errors=
692
'replace')))
693
for attr in
694
self.runtime_expansions)
695
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
696
427
try:
697
428
command = self.checker_command % escaped_attrs
698
except TypeError as error:
699
logger.error('Could not format string "%s"',
700
self.checker_command, exc_info=error)
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
701
432
return True # Try again later
702
433
self.current_checker_command = command
703
434
try:
704
logger.info("Starting checker %r for %s",
435
logger.info(u"Starting checker %r for %s",
705
436
command, self.name)
706
437
# We don't need to redirect stdout and stderr, since
707
438
# in normal mode, that is already done by daemon(),
709
440
# always replaced by /dev/null.)
710
441
self.checker = subprocess.Popen(command,
711
442
close_fds=True,
712
shell=True, cwd="/")
443
shell=True, cwd=u"/")
713
444
self.checker_callback_tag = (gobject.child_watch_add
714
445
(self.checker.pid,
715
446
self.checker_callback,
720
451
if pid:
721
452
gobject.source_remove(self.checker_callback_tag)
722
453
self.checker_callback(pid, status, command)
723
except OSError as error:
724
logger.error("Failed to start subprocess",
725
exc_info=error)
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
456
error)
726
457
# Re-run this periodically if run by gobject.timeout_add
727
458
return True
728
459
731
462
if self.checker_callback_tag:
732
463
gobject.source_remove(self.checker_callback_tag)
733
464
self.checker_callback_tag = None
734
if getattr(self, "checker", None) is None:
465
if getattr(self, u"checker", None) is None:
735
466
return
736
logger.debug("Stopping checker for %(name)s", vars(self))
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
737
468
try:
738
self.checker.terminate()
739
#time.sleep(0.5)
469
os.kill(self.checker.pid, signal.SIGTERM)
470
#os.sleep(0.5)
740
471
#if self.checker.poll() is None:
741
# self.checker.kill()
742
except OSError as error:
472
# os.kill(self.checker.pid, signal.SIGKILL)
473
except OSError, error:
743
474
if error.errno != errno.ESRCH: # No such process
744
475
raise
745
476
self.checker = None
746
747
748
def dbus_service_property(dbus_interface, signature="v",
749
access="readwrite", byte_arrays=False):
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
485
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
750
491
"""Decorators for marking methods of a DBusObjectWithProperties to
751
492
become properties on the D-Bus.
752
493
757
498
dbus.service.method, except there is only "signature", since the
758
499
type from Get() and the type sent to Set() is the same.
759
500
"""
760
# Encoding deeply encoded byte arrays is not supported yet by the
761
# "Set" method, so we fail early here:
762
if byte_arrays and signature != "ay":
763
raise ValueError("Byte arrays not supported for non-'ay'"
764
" signature {0!r}".format(signature))
765
501
def decorator(func):
766
502
func._dbus_is_property = True
767
503
func._dbus_interface = dbus_interface
768
504
func._dbus_signature = signature
769
505
func._dbus_access = access
770
506
func._dbus_name = func.__name__
771
if func._dbus_name.endswith("_dbus_property"):
507
if func._dbus_name.endswith(u"_dbus_property"):
772
508
func._dbus_name = func._dbus_name[:-14]
773
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
774
return func
775
return decorator
776
777
778
def dbus_interface_annotations(dbus_interface):
779
"""Decorator for marking functions returning interface annotations
780
781
Usage:
782
783
@dbus_interface_annotations("org.example.Interface")
784
def _foo(self): # Function name does not matter
785
return {"org.freedesktop.DBus.Deprecated": "true",
786
"org.freedesktop.DBus.Property.EmitsChangedSignal":
787
"false"}
788
"""
789
def decorator(func):
790
func._dbus_is_interface = True
791
func._dbus_interface = dbus_interface
792
func._dbus_name = dbus_interface
793
return func
794
return decorator
795
796
797
def dbus_annotations(annotations):
798
"""Decorator to annotate D-Bus methods, signals or properties
799
Usage:
800
801
@dbus_service_property("org.example.Interface", signature="b",
802
access="r")
803
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
804
"org.freedesktop.DBus.Property."
805
"EmitsChangedSignal": "false"})
806
def Property_dbus_property(self):
807
return dbus.Boolean(False)
808
"""
809
def decorator(func):
810
func._dbus_annotations = annotations
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
811
510
return func
812
511
return decorator
813
512
833
532
834
533
class DBusObjectWithProperties(dbus.service.Object):
835
534
"""A D-Bus object with properties.
836
535
837
536
Classes inheriting from this can use the dbus_service_property
838
537
decorator to expose methods as D-Bus properties. It exposes the
839
538
standard Get(), Set(), and GetAll() methods on the D-Bus.
840
539
"""
841
540
842
541
@staticmethod
843
def _is_dbus_thing(thing):
844
"""Returns a function testing if an attribute is a D-Bus thing
845
846
If called like _is_dbus_thing("method") it returns a function
847
suitable for use as predicate to inspect.getmembers().
848
"""
849
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
850
False)
542
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
851
544
852
def _get_all_dbus_things(self, thing):
545
def _get_all_dbus_properties(self):
853
546
"""Returns a generator of (name, attribute) pairs
854
547
"""
855
return ((getattr(athing.__get__(self), "_dbus_name",
856
name),
857
athing.__get__(self))
858
for cls in self.__class__.__mro__
859
for name, athing in
860
inspect.getmembers(cls,
861
self._is_dbus_thing(thing)))
548
return ((prop._dbus_name, prop)
549
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
862
551
863
552
def _get_dbus_property(self, interface_name, property_name):
864
553
"""Returns a bound method if one exists which is a D-Bus
865
554
property with the specified name and interface.
866
555
"""
867
for cls in self.__class__.__mro__:
868
for name, value in (inspect.getmembers
869
(cls,
870
self._is_dbus_thing("property"))):
871
if (value._dbus_name == property_name
872
and value._dbus_interface == interface_name):
873
return value.__get__(self)
874
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
875
566
# No such property
876
raise DBusPropertyNotFound(self.dbus_object_path + ":"
877
+ interface_name + "."
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
878
569
+ property_name)
879
570
880
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
881
out_signature="v")
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
882
573
def Get(self, interface_name, property_name):
883
574
"""Standard D-Bus property Get() method, see D-Bus standard.
884
575
"""
885
576
prop = self._get_dbus_property(interface_name, property_name)
886
if prop._dbus_access == "write":
577
if prop._dbus_access == u"write":
887
578
raise DBusPropertyAccessException(property_name)
888
579
value = prop()
889
if not hasattr(value, "variant_level"):
580
if not hasattr(value, u"variant_level"):
890
581
return value
891
582
return type(value)(value, variant_level=value.variant_level+1)
892
583
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
894
585
def Set(self, interface_name, property_name, value):
895
586
"""Standard D-Bus property Set() method, see D-Bus standard.
896
587
"""
897
588
prop = self._get_dbus_property(interface_name, property_name)
898
if prop._dbus_access == "read":
589
if prop._dbus_access == u"read":
899
590
raise DBusPropertyAccessException(property_name)
900
if prop._dbus_get_args_options["byte_arrays"]:
901
# The byte_arrays option is not supported yet on
902
# signatures other than "ay".
903
if prop._dbus_signature != "ay":
904
raise ValueError
905
value = dbus.ByteArray(b''.join(chr(byte)
906
for byte in value))
591
if prop._dbus_get_args_options[u"byte_arrays"]:
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
907
594
prop(value)
908
595
909
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
910
out_signature="a{sv}")
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
911
598
def GetAll(self, interface_name):
912
599
"""Standard D-Bus property GetAll() method, see D-Bus
913
600
standard.
914
601
915
602
Note: Will not include properties with access="write".
916
603
"""
917
properties = {}
918
for name, prop in self._get_all_dbus_things("property"):
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
919
606
if (interface_name
920
607
and interface_name != prop._dbus_interface):
921
608
# Interface non-empty but did not match
922
609
continue
923
610
# Ignore write-only properties
924
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
925
612
continue
926
613
value = prop()
927
if not hasattr(value, "variant_level"):
928
properties[name] = value
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
929
616
continue
930
properties[name] = type(value)(value, variant_level=
931
value.variant_level+1)
932
return dbus.Dictionary(properties, signature="sv")
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
933
620
934
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
935
out_signature="s",
622
out_signature=u"s",
936
623
path_keyword='object_path',
937
624
connection_keyword='connection')
938
625
def Introspect(self, object_path, connection):
939
"""Overloading of standard D-Bus method.
940
941
Inserts property tags and interface annotation tags.
626
"""Standard D-Bus method, overloaded to insert property tags.
942
627
"""
943
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
944
629
connection)
945
630
try:
946
631
document = xml.dom.minidom.parseString(xmlstring)
947
632
def make_tag(document, name, prop):
948
e = document.createElement("property")
949
e.setAttribute("name", name)
950
e.setAttribute("type", prop._dbus_signature)
951
e.setAttribute("access", prop._dbus_access)
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
952
637
return e
953
for if_tag in document.getElementsByTagName("interface"):
954
# Add property tags
638
for if_tag in document.getElementsByTagName(u"interface"):
955
639
for tag in (make_tag(document, name, prop)
956
640
for name, prop
957
in self._get_all_dbus_things("property")
641
in self._get_all_dbus_properties()
958
642
if prop._dbus_interface
959
== if_tag.getAttribute("name")):
643
== if_tag.getAttribute(u"name")):
960
644
if_tag.appendChild(tag)
961
# Add annotation tags
962
for typ in ("method", "signal", "property"):
963
for tag in if_tag.getElementsByTagName(typ):
964
annots = dict()
965
for name, prop in (self.
966
_get_all_dbus_things(typ)):
967
if (name == tag.getAttribute("name")
968
and prop._dbus_interface
969
== if_tag.getAttribute("name")):
970
annots.update(getattr
971
(prop,
972
"_dbus_annotations",
973
{}))
974
for name, value in annots.iteritems():
975
ann_tag = document.createElement(
976
"annotation")
977
ann_tag.setAttribute("name", name)
978
ann_tag.setAttribute("value", value)
979
tag.appendChild(ann_tag)
980
# Add interface annotation tags
981
for annotation, value in dict(
982
itertools.chain(
983
*(annotations().iteritems()
984
for name, annotations in
985
self._get_all_dbus_things("interface")
986
if name == if_tag.getAttribute("name")
987
))).iteritems():
988
ann_tag = document.createElement("annotation")
989
ann_tag.setAttribute("name", annotation)
990
ann_tag.setAttribute("value", value)
991
if_tag.appendChild(ann_tag)
992
645
# Add the names to the return values for the
993
646
# "org.freedesktop.DBus.Properties" methods
994
if (if_tag.getAttribute("name")
995
== "org.freedesktop.DBus.Properties"):
996
for cn in if_tag.getElementsByTagName("method"):
997
if cn.getAttribute("name") == "Get":
998
for arg in cn.getElementsByTagName("arg"):
999
if (arg.getAttribute("direction")
1000
== "out"):
1001
arg.setAttribute("name", "value")
1002
elif cn.getAttribute("name") == "GetAll":
1003
for arg in cn.getElementsByTagName("arg"):
1004
if (arg.getAttribute("direction")
1005
== "out"):
1006
arg.setAttribute("name", "props")
1007
xmlstring = document.toxml("utf-8")
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
1008
661
document.unlink()
1009
662
except (AttributeError, xml.dom.DOMException,
1010
xml.parsers.expat.ExpatError) as error:
1011
logger.error("Failed to override Introspection method",
1012
exc_info=error)
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
1013
666
return xmlstring
1014
667
1015
668
1016
def datetime_to_dbus (dt, variant_level=0):
1017
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1018
if dt is None:
1019
return dbus.String("", variant_level = variant_level)
1020
return dbus.String(dt.isoformat(),
1021
variant_level=variant_level)
1022
1023
1024
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1025
.__metaclass__):
1026
"""Applied to an empty subclass of a D-Bus object, this metaclass
1027
will add additional D-Bus attributes matching a certain pattern.
1028
"""
1029
def __new__(mcs, name, bases, attr):
1030
# Go through all the base classes which could have D-Bus
1031
# methods, signals, or properties in them
1032
old_interface_names = []
1033
for base in (b for b in bases
1034
if issubclass(b, dbus.service.Object)):
1035
# Go though all attributes of the base class
1036
for attrname, attribute in inspect.getmembers(base):
1037
# Ignore non-D-Bus attributes, and D-Bus attributes
1038
# with the wrong interface name
1039
if (not hasattr(attribute, "_dbus_interface")
1040
or not attribute._dbus_interface
1041
.startswith("se.recompile.Mandos")):
1042
continue
1043
# Create an alternate D-Bus interface name based on
1044
# the current name
1045
alt_interface = (attribute._dbus_interface
1046
.replace("se.recompile.Mandos",
1047
"se.bsnet.fukt.Mandos"))
1048
if alt_interface != attribute._dbus_interface:
1049
old_interface_names.append(alt_interface)
1050
# Is this a D-Bus signal?
1051
if getattr(attribute, "_dbus_is_signal", False):
1052
# Extract the original non-method function by
1053
# black magic
1054
nonmethod_func = (dict(
1055
zip(attribute.func_code.co_freevars,
1056
attribute.__closure__))["func"]
1057
.cell_contents)
1058
# Create a new, but exactly alike, function
1059
# object, and decorate it to be a new D-Bus signal
1060
# with the alternate D-Bus interface name
1061
new_function = (dbus.service.signal
1062
(alt_interface,
1063
attribute._dbus_signature)
1064
(types.FunctionType(
1065
nonmethod_func.func_code,
1066
nonmethod_func.func_globals,
1067
nonmethod_func.func_name,
1068
nonmethod_func.func_defaults,
1069
nonmethod_func.func_closure)))
1070
# Copy annotations, if any
1071
try:
1072
new_function._dbus_annotations = (
1073
dict(attribute._dbus_annotations))
1074
except AttributeError:
1075
pass
1076
# Define a creator of a function to call both the
1077
# old and new functions, so both the old and new
1078
# signals gets sent when the function is called
1079
def fixscope(func1, func2):
1080
"""This function is a scope container to pass
1081
func1 and func2 to the "call_both" function
1082
outside of its arguments"""
1083
def call_both(*args, **kwargs):
1084
"""This function will emit two D-Bus
1085
signals by calling func1 and func2"""
1086
func1(*args, **kwargs)
1087
func2(*args, **kwargs)
1088
return call_both
1089
# Create the "call_both" function and add it to
1090
# the class
1091
attr[attrname] = fixscope(attribute,
1092
new_function)
1093
# Is this a D-Bus method?
1094
elif getattr(attribute, "_dbus_is_method", False):
1095
# Create a new, but exactly alike, function
1096
# object. Decorate it to be a new D-Bus method
1097
# with the alternate D-Bus interface name. Add it
1098
# to the class.
1099
attr[attrname] = (dbus.service.method
1100
(alt_interface,
1101
attribute._dbus_in_signature,
1102
attribute._dbus_out_signature)
1103
(types.FunctionType
1104
(attribute.func_code,
1105
attribute.func_globals,
1106
attribute.func_name,
1107
attribute.func_defaults,
1108
attribute.func_closure)))
1109
# Copy annotations, if any
1110
try:
1111
attr[attrname]._dbus_annotations = (
1112
dict(attribute._dbus_annotations))
1113
except AttributeError:
1114
pass
1115
# Is this a D-Bus property?
1116
elif getattr(attribute, "_dbus_is_property", False):
1117
# Create a new, but exactly alike, function
1118
# object, and decorate it to be a new D-Bus
1119
# property with the alternate D-Bus interface
1120
# name. Add it to the class.
1121
attr[attrname] = (dbus_service_property
1122
(alt_interface,
1123
attribute._dbus_signature,
1124
attribute._dbus_access,
1125
attribute
1126
._dbus_get_args_options
1127
["byte_arrays"])
1128
(types.FunctionType
1129
(attribute.func_code,
1130
attribute.func_globals,
1131
attribute.func_name,
1132
attribute.func_defaults,
1133
attribute.func_closure)))
1134
# Copy annotations, if any
1135
try:
1136
attr[attrname]._dbus_annotations = (
1137
dict(attribute._dbus_annotations))
1138
except AttributeError:
1139
pass
1140
# Is this a D-Bus interface?
1141
elif getattr(attribute, "_dbus_is_interface", False):
1142
# Create a new, but exactly alike, function
1143
# object. Decorate it to be a new D-Bus interface
1144
# with the alternate D-Bus interface name. Add it
1145
# to the class.
1146
attr[attrname] = (dbus_interface_annotations
1147
(alt_interface)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1154
# Deprecate all old interfaces
1155
iname="_AlternateDBusNamesMetaclass_interface_annotation{0}"
1156
for old_interface_name in old_interface_names:
1157
@dbus_interface_annotations(old_interface_name)
1158
def func(self):
1159
return { "org.freedesktop.DBus.Deprecated": "true" }
1160
# Find an unused name
1161
for aname in (iname.format(i) for i in itertools.count()):
1162
if aname not in attr:
1163
attr[aname] = func
1164
break
1165
return type.__new__(mcs, name, bases, attr)
1166
1167
1168
669
class ClientDBus(Client, DBusObjectWithProperties):
1169
670
"""A Client class using D-Bus
1170
671
1172
673
dbus_object_path: dbus.ObjectPath
1173
674
bus: dbus.SystemBus()
1174
675
"""
1175
1176
runtime_expansions = (Client.runtime_expansions
1177
+ ("dbus_object_path",))
1178
1179
676
# dbus.service.Object doesn't use super(), so we can't either.
1180
677
1181
678
def __init__(self, bus = None, *args, **kwargs):
1183
680
Client.__init__(self, *args, **kwargs)
1184
681
# Only now, when this client is initialized, can it show up on
1185
682
# the D-Bus
1186
client_object_name = unicode(self.name).translate(
1187
{ord("."): ord("_"),
1188
ord("-"): ord("_")})
1189
683
self.dbus_object_path = (dbus.ObjectPath
1190
("/clients/" + client_object_name))
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1191
686
DBusObjectWithProperties.__init__(self, self.bus,
1192
687
self.dbus_object_path)
1193
688
1194
def notifychangeproperty(transform_func,
1195
dbus_name, type_func=lambda x: x,
1196
variant_level=1):
1197
""" Modify a variable so that it's a property which announces
1198
its changes to DBus.
1199
1200
transform_fun: Function that takes a value and a variant_level
1201
and transforms it to a D-Bus type.
1202
dbus_name: D-Bus name of the variable
1203
type_func: Function that transform the value before sending it
1204
to the D-Bus. Default: no transform
1205
variant_level: D-Bus variant level. Default: 1
1206
"""
1207
attrname = "_{0}".format(dbus_name)
1208
def setter(self, value):
1209
if hasattr(self, "dbus_object_path"):
1210
if (not hasattr(self, attrname) or
1211
type_func(getattr(self, attrname, None))
1212
!= type_func(value)):
1213
dbus_value = transform_func(type_func(value),
1214
variant_level
1215
=variant_level)
1216
self.PropertyChanged(dbus.String(dbus_name),
1217
dbus_value)
1218
setattr(self, attrname, value)
1219
1220
return property(lambda self: getattr(self, attrname), setter)
1221
1222
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1223
approvals_pending = notifychangeproperty(dbus.Boolean,
1224
"ApprovalPending",
1225
type_func = bool)
1226
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1227
last_enabled = notifychangeproperty(datetime_to_dbus,
1228
"LastEnabled")
1229
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1230
type_func = lambda checker:
1231
checker is not None)
1232
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1233
"LastCheckedOK")
1234
last_checker_status = notifychangeproperty(dbus.Int16,
1235
"LastCheckerStatus")
1236
last_approval_request = notifychangeproperty(
1237
datetime_to_dbus, "LastApprovalRequest")
1238
approved_by_default = notifychangeproperty(dbus.Boolean,
1239
"ApprovedByDefault")
1240
approval_delay = notifychangeproperty(dbus.UInt64,
1241
"ApprovalDelay",
1242
type_func =
1243
timedelta_to_milliseconds)
1244
approval_duration = notifychangeproperty(
1245
dbus.UInt64, "ApprovalDuration",
1246
type_func = timedelta_to_milliseconds)
1247
host = notifychangeproperty(dbus.String, "Host")
1248
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1249
type_func =
1250
timedelta_to_milliseconds)
1251
extended_timeout = notifychangeproperty(
1252
dbus.UInt64, "ExtendedTimeout",
1253
type_func = timedelta_to_milliseconds)
1254
interval = notifychangeproperty(dbus.UInt64,
1255
"Interval",
1256
type_func =
1257
timedelta_to_milliseconds)
1258
checker_command = notifychangeproperty(dbus.String, "Checker")
1259
1260
del notifychangeproperty
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
1261
716
1262
717
def __del__(self, *args, **kwargs):
1263
718
try:
1264
719
self.remove_from_connection()
1265
720
except LookupError:
1266
721
pass
1267
if hasattr(DBusObjectWithProperties, "__del__"):
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1268
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1269
724
Client.__del__(self, *args, **kwargs)
1270
725
1272
727
*args, **kwargs):
1273
728
self.checker_callback_tag = None
1274
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
1275
733
if os.WIFEXITED(condition):
1276
734
exitstatus = os.WEXITSTATUS(condition)
1277
735
# Emit D-Bus signal
1287
745
return Client.checker_callback(self, pid, condition, command,
1288
746
*args, **kwargs)
1289
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1290
757
def start_checker(self, *args, **kwargs):
1291
758
old_checker = self.checker
1292
759
if self.checker is not None:
1299
766
and old_checker_pid != self.checker.pid):
1300
767
# Emit D-Bus signal
1301
768
self.CheckerStarted(self.current_checker_command)
1302
return r
1303
1304
def _reset_approved(self):
1305
self.approved = None
1306
return False
1307
1308
def approve(self, value=True):
1309
self.send_changedstate()
1310
self.approved = value
1311
gobject.timeout_add(timedelta_to_milliseconds
1312
(self.approval_duration),
1313
self._reset_approved)
1314
1315
## D-Bus methods, signals & properties
1316
_interface = "se.recompile.Mandos.Client"
1317
1318
## Interfaces
1319
1320
@dbus_interface_annotations(_interface)
1321
def _foo(self):
1322
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1323
"false"}
1324
1325
## Signals
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
1326
790
1327
791
# CheckerCompleted - signal
1328
@dbus.service.signal(_interface, signature="nxs")
792
@dbus.service.signal(_interface, signature=u"nxs")
1329
793
def CheckerCompleted(self, exitcode, waitstatus, command):
1330
794
"D-Bus signal"
1331
795
pass
1332
796
1333
797
# CheckerStarted - signal
1334
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
1335
799
def CheckerStarted(self, command):
1336
800
"D-Bus signal"
1337
801
pass
1338
802
1339
803
# PropertyChanged - signal
1340
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
1341
805
def PropertyChanged(self, property, value):
1342
806
"D-Bus signal"
1343
807
pass
1345
809
# GotSecret - signal
1346
810
@dbus.service.signal(_interface)
1347
811
def GotSecret(self):
1348
"""D-Bus signal
1349
Is sent after a successful transfer of secret from the Mandos
1350
server to mandos-client
1351
"""
812
"D-Bus signal"
1352
813
pass
1353
814
1354
815
# Rejected - signal
1355
@dbus.service.signal(_interface, signature="s")
1356
def Rejected(self, reason):
816
@dbus.service.signal(_interface)
817
def Rejected(self):
1357
818
"D-Bus signal"
1358
819
pass
1359
820
1360
# NeedApproval - signal
1361
@dbus.service.signal(_interface, signature="tb")
1362
def NeedApproval(self, timeout, default):
1363
"D-Bus signal"
1364
return self.need_approval()
1365
1366
## Methods
1367
1368
# Approve - method
1369
@dbus.service.method(_interface, in_signature="b")
1370
def Approve(self, value):
1371
self.approve(value)
1372
1373
# CheckedOK - method
1374
@dbus.service.method(_interface)
1375
def CheckedOK(self):
1376
self.checked_ok()
1377
1378
821
# Enable - method
1379
822
@dbus.service.method(_interface)
1380
823
def Enable(self):
1398
841
def StopChecker(self):
1399
842
self.stop_checker()
1400
843
1401
## Properties
1402
1403
# ApprovalPending - property
1404
@dbus_service_property(_interface, signature="b", access="read")
1405
def ApprovalPending_dbus_property(self):
1406
return dbus.Boolean(bool(self.approvals_pending))
1407
1408
# ApprovedByDefault - property
1409
@dbus_service_property(_interface, signature="b",
1410
access="readwrite")
1411
def ApprovedByDefault_dbus_property(self, value=None):
1412
if value is None: # get
1413
return dbus.Boolean(self.approved_by_default)
1414
self.approved_by_default = bool(value)
1415
1416
# ApprovalDelay - property
1417
@dbus_service_property(_interface, signature="t",
1418
access="readwrite")
1419
def ApprovalDelay_dbus_property(self, value=None):
1420
if value is None: # get
1421
return dbus.UInt64(self.approval_delay_milliseconds())
1422
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1423
1424
# ApprovalDuration - property
1425
@dbus_service_property(_interface, signature="t",
1426
access="readwrite")
1427
def ApprovalDuration_dbus_property(self, value=None):
1428
if value is None: # get
1429
return dbus.UInt64(timedelta_to_milliseconds(
1430
self.approval_duration))
1431
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1432
1433
# Name - property
1434
@dbus_service_property(_interface, signature="s", access="read")
1435
def Name_dbus_property(self):
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1436
847
return dbus.String(self.name)
1437
848
1438
# Fingerprint - property
1439
@dbus_service_property(_interface, signature="s", access="read")
1440
def Fingerprint_dbus_property(self):
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1441
852
return dbus.String(self.fingerprint)
1442
853
1443
# Host - property
1444
@dbus_service_property(_interface, signature="s",
1445
access="readwrite")
1446
def Host_dbus_property(self, value=None):
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1447
858
if value is None: # get
1448
859
return dbus.String(self.host)
1449
self.host = unicode(value)
1450
1451
# Created - property
1452
@dbus_service_property(_interface, signature="s", access="read")
1453
def Created_dbus_property(self):
1454
return datetime_to_dbus(self.created)
1455
1456
# LastEnabled - property
1457
@dbus_service_property(_interface, signature="s", access="read")
1458
def LastEnabled_dbus_property(self):
1459
return datetime_to_dbus(self.last_enabled)
1460
1461
# Enabled - property
1462
@dbus_service_property(_interface, signature="b",
1463
access="readwrite")
1464
def Enabled_dbus_property(self, value=None):
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1465
881
if value is None: # get
1466
882
return dbus.Boolean(self.enabled)
1467
883
if value:
1469
885
else:
1470
886
self.disable()
1471
887
1472
# LastCheckedOK - property
1473
@dbus_service_property(_interface, signature="s",
1474
access="readwrite")
1475
def LastCheckedOK_dbus_property(self, value=None):
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1476
892
if value is not None:
1477
893
self.checked_ok()
1478
894
return
1479
return datetime_to_dbus(self.last_checked_ok)
1480
1481
# LastCheckerStatus - property
1482
@dbus_service_property(_interface, signature="n",
1483
access="read")
1484
def LastCheckerStatus_dbus_property(self):
1485
return dbus.Int16(self.last_checker_status)
1486
1487
# Expires - property
1488
@dbus_service_property(_interface, signature="s", access="read")
1489
def Expires_dbus_property(self):
1490
return datetime_to_dbus(self.expires)
1491
1492
# LastApprovalRequest - property
1493
@dbus_service_property(_interface, signature="s", access="read")
1494
def LastApprovalRequest_dbus_property(self):
1495
return datetime_to_dbus(self.last_approval_request)
1496
1497
# Timeout - property
1498
@dbus_service_property(_interface, signature="t",
1499
access="readwrite")
1500
def Timeout_dbus_property(self, value=None):
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1501
904
if value is None: # get
1502
905
return dbus.UInt64(self.timeout_milliseconds())
1503
906
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
1504
912
# Reschedule timeout
1505
if self.enabled:
1506
now = datetime.datetime.utcnow()
1507
time_to_die = timedelta_to_milliseconds(
1508
(self.last_checked_ok + self.timeout) - now)
1509
if time_to_die <= 0:
1510
# The timeout has passed
1511
self.disable()
1512
else:
1513
self.expires = (now +
1514
datetime.timedelta(milliseconds =
1515
time_to_die))
1516
if (getattr(self, "disable_initiator_tag", None)
1517
is None):
1518
return
1519
gobject.source_remove(self.disable_initiator_tag)
1520
self.disable_initiator_tag = (gobject.timeout_add
1521
(time_to_die,
1522
self.disable))
1523
1524
# ExtendedTimeout - property
1525
@dbus_service_property(_interface, signature="t",
1526
access="readwrite")
1527
def ExtendedTimeout_dbus_property(self, value=None):
1528
if value is None: # get
1529
return dbus.UInt64(self.extended_timeout_milliseconds())
1530
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1531
1532
# Interval - property
1533
@dbus_service_property(_interface, signature="t",
1534
access="readwrite")
1535
def Interval_dbus_property(self, value=None):
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1536
932
if value is None: # get
1537
933
return dbus.UInt64(self.interval_milliseconds())
1538
934
self.interval = datetime.timedelta(0, 0, 0, value)
1539
if getattr(self, "checker_initiator_tag", None) is None:
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1540
939
return
1541
if self.enabled:
1542
# Reschedule checker run
1543
gobject.source_remove(self.checker_initiator_tag)
1544
self.checker_initiator_tag = (gobject.timeout_add
1545
(value, self.start_checker))
1546
self.start_checker() # Start one now, too
1547
1548
# Checker - property
1549
@dbus_service_property(_interface, signature="s",
1550
access="readwrite")
1551
def Checker_dbus_property(self, value=None):
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1552
950
if value is None: # get
1553
951
return dbus.String(self.checker_command)
1554
self.checker_command = unicode(value)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
1555
957
1556
# CheckerRunning - property
1557
@dbus_service_property(_interface, signature="b",
1558
access="readwrite")
1559
def CheckerRunning_dbus_property(self, value=None):
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1560
962
if value is None: # get
1561
963
return dbus.Boolean(self.checker is not None)
1562
964
if value:
1564
966
else:
1565
967
self.stop_checker()
1566
968
1567
# ObjectPath - property
1568
@dbus_service_property(_interface, signature="o", access="read")
1569
def ObjectPath_dbus_property(self):
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1570
972
return self.dbus_object_path # is already a dbus.ObjectPath
1571
973
1572
# Secret = property
1573
@dbus_service_property(_interface, signature="ay",
1574
access="write", byte_arrays=True)
1575
def Secret_dbus_property(self, value):
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1576
978
self.secret = str(value)
1577
979
1578
980
del _interface
1579
981
1580
982
1581
class ProxyClient(object):
1582
def __init__(self, child_pipe, fpr, address):
1583
self._pipe = child_pipe
1584
self._pipe.send(('init', fpr, address))
1585
if not self._pipe.recv():
1586
raise KeyError()
1587
1588
def __getattribute__(self, name):
1589
if name == '_pipe':
1590
return super(ProxyClient, self).__getattribute__(name)
1591
self._pipe.send(('getattr', name))
1592
data = self._pipe.recv()
1593
if data[0] == 'data':
1594
return data[1]
1595
if data[0] == 'function':
1596
def func(*args, **kwargs):
1597
self._pipe.send(('funcall', name, args, kwargs))
1598
return self._pipe.recv()[1]
1599
return func
1600
1601
def __setattr__(self, name, value):
1602
if name == '_pipe':
1603
return super(ProxyClient, self).__setattr__(name, value)
1604
self._pipe.send(('setattr', name, value))
1605
1606
1607
class ClientDBusTransitional(ClientDBus):
1608
__metaclass__ = AlternateDBusNamesMetaclass
1609
1610
1611
983
class ClientHandler(socketserver.BaseRequestHandler, object):
1612
984
"""A class to handle client connections.
1613
985
1615
987
Note: This will run in its own forked process."""
1616
988
1617
989
def handle(self):
1618
with contextlib.closing(self.server.child_pipe) as child_pipe:
1619
logger.info("TCP connection from: %s",
1620
unicode(self.client_address))
1621
logger.debug("Pipe FD: %d",
1622
self.server.child_pipe.fileno())
1623
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1624
995
session = (gnutls.connection
1625
996
.ClientSession(self.request,
1626
997
gnutls.connection
1627
998
.X509Credentials()))
1628
999
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1629
1009
# Note: gnutls.connection.X509Credentials is really a
1630
1010
# generic GnuTLS certificate credentials object so long as
1631
1011
# no X.509 keys are added to it. Therefore, we can use it
1632
1012
# here despite using OpenPGP certificates.
1633
1013
1634
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1635
# "+AES-256-CBC", "+SHA1",
1636
# "+COMP-NULL", "+CTYPE-OPENPGP",
1637
# "+DHE-DSS"))
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1638
1018
# Use a fallback default, since this MUST be set.
1639
1019
priority = self.server.gnutls_priority
1640
1020
if priority is None:
1641
priority = "NORMAL"
1021
priority = u"NORMAL"
1642
1022
(gnutls.library.functions
1643
1023
.gnutls_priority_set_direct(session._c_object,
1644
1024
priority, None))
1645
1025
1646
# Start communication using the Mandos protocol
1647
# Get protocol number
1648
line = self.request.makefile().readline()
1649
logger.debug("Protocol version: %r", line)
1650
try:
1651
if int(line.strip().split()[0]) > 1:
1652
raise RuntimeError
1653
except (ValueError, IndexError, RuntimeError) as error:
1654
logger.error("Unknown protocol version: %s", error)
1655
return
1656
1657
# Start GnuTLS connection
1658
1026
try:
1659
1027
session.handshake()
1660
except gnutls.errors.GNUTLSError as error:
1661
logger.warning("Handshake failed: %s", error)
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1662
1030
# Do not run session.bye() here: the session is not
1663
1031
# established. Just abandon the request.
1664
1032
return
1665
logger.debug("Handshake succeeded")
1666
1667
approval_required = False
1033
logger.debug(u"Handshake succeeded")
1668
1034
try:
1669
try:
1670
fpr = self.fingerprint(self.peer_certificate
1671
(session))
1672
except (TypeError,
1673
gnutls.errors.GNUTLSError) as error:
1674
logger.warning("Bad certificate: %s", error)
1675
return
1676
logger.debug("Fingerprint: %s", fpr)
1677
1678
try:
1679
client = ProxyClient(child_pipe, fpr,
1680
self.client_address)
1681
except KeyError:
1682
return
1683
1684
if client.approval_delay:
1685
delay = client.approval_delay
1686
client.approvals_pending += 1
1687
approval_required = True
1688
1689
while True:
1690
if not client.enabled:
1691
logger.info("Client %s is disabled",
1692
client.name)
1693
if self.server.use_dbus:
1694
# Emit D-Bus signal
1695
client.Rejected("Disabled")
1696
return
1697
1698
if client.approved or not client.approval_delay:
1699
#We are approved or approval is disabled
1700
break
1701
elif client.approved is None:
1702
logger.info("Client %s needs approval",
1703
client.name)
1704
if self.server.use_dbus:
1705
# Emit D-Bus signal
1706
client.NeedApproval(
1707
client.approval_delay_milliseconds(),
1708
client.approved_by_default)
1709
else:
1710
logger.warning("Client %s was not approved",
1711
client.name)
1712
if self.server.use_dbus:
1713
# Emit D-Bus signal
1714
client.Rejected("Denied")
1715
return
1716
1717
#wait until timeout or approved
1718
time = datetime.datetime.now()
1719
client.changedstate.acquire()
1720
(client.changedstate.wait
1721
(float(client.timedelta_to_milliseconds(delay)
1722
/ 1000)))
1723
client.changedstate.release()
1724
time2 = datetime.datetime.now()
1725
if (time2 - time) >= delay:
1726
if not client.approved_by_default:
1727
logger.warning("Client %s timed out while"
1728
" waiting for approval",
1729
client.name)
1730
if self.server.use_dbus:
1731
# Emit D-Bus signal
1732
client.Rejected("Approval timed out")
1733
return
1734
else:
1735
break
1736
else:
1737
delay -= time2 - time
1738
1739
sent_size = 0
1740
while sent_size < len(client.secret):
1741
try:
1742
sent = session.send(client.secret[sent_size:])
1743
except gnutls.errors.GNUTLSError as error:
1744
logger.warning("gnutls send failed",
1745
exc_info=error)
1746
return
1747
logger.debug("Sent: %d, remaining: %d",
1748
sent, len(client.secret)
1749
- (sent_size + sent))
1750
sent_size += sent
1751
1752
logger.info("Sending secret to %s", client.name)
1753
# bump the timeout using extended_timeout
1754
client.bump_timeout(client.extended_timeout)
1755
if self.server.use_dbus:
1756
# Emit D-Bus signal
1757
client.GotSecret()
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1758
1041
1759
finally:
1760
if approval_required:
1761
client.approvals_pending -= 1
1762
try:
1763
session.bye()
1764
except gnutls.errors.GNUTLSError as error:
1765
logger.warning("GnuTLS bye failed",
1766
exc_info=error)
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1767
1067
1768
1068
@staticmethod
1769
1069
def peer_certificate(session):
1779
1079
.gnutls_certificate_get_peers
1780
1080
(session._c_object, ctypes.byref(list_size)))
1781
1081
if not bool(cert_list) and list_size.value != 0:
1782
raise gnutls.errors.GNUTLSError("error getting peer"
1783
" certificate")
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1784
1084
if list_size.value == 0:
1785
1085
return None
1786
1086
cert = cert_list[0]
1812
1112
if crtverify.value != 0:
1813
1113
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1814
1114
raise (gnutls.errors.CertificateSecurityError
1815
("Verify failed"))
1115
(u"Verify failed"))
1816
1116
# New buffer for the fingerprint
1817
1117
buf = ctypes.create_string_buffer(20)
1818
1118
buf_len = ctypes.c_size_t()
1825
1125
# Convert the buffer to a Python bytestring
1826
1126
fpr = ctypes.string_at(buf, buf_len.value)
1827
1127
# Convert the bytestring to hexadecimal notation
1828
hex_fpr = binascii.hexlify(fpr).upper()
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1829
1129
return hex_fpr
1830
1130
1831
1131
1832
class MultiprocessingMixIn(object):
1833
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1834
def sub_process_main(self, request, address):
1835
try:
1836
self.finish_request(request, address)
1837
except Exception:
1838
self.handle_error(request, address)
1839
self.close_request(request)
1840
1841
def process_request(self, request, address):
1842
"""Start a new process to process the request."""
1843
proc = multiprocessing.Process(target = self.sub_process_main,
1844
args = (request,
1845
address))
1846
proc.start()
1847
return proc
1848
1849
1850
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1851
""" adds a pipe to the MixIn """
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1852
1134
def process_request(self, request, client_address):
1853
1135
"""Overrides and wraps the original process_request().
1854
1136
1855
1137
This function creates a new pipe in self.pipe
1856
1138
"""
1857
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1858
1859
proc = MultiprocessingMixIn.process_request(self, request,
1860
client_address)
1861
self.child_pipe.close()
1862
self.add_pipe(parent_pipe, proc)
1863
1864
def add_pipe(self, parent_pipe, proc):
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1865
1145
"""Dummy function; override as necessary"""
1866
raise NotImplementedError
1867
1868
1869
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1870
1150
socketserver.TCPServer, object):
1871
1151
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1872
1152
1888
1168
bind to an address or port if they were not specified."""
1889
1169
if self.interface is not None:
1890
1170
if SO_BINDTODEVICE is None:
1891
logger.error("SO_BINDTODEVICE does not exist;"
1892
" cannot bind to interface %s",
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1893
1173
self.interface)
1894
1174
else:
1895
1175
try:
1896
1176
self.socket.setsockopt(socket.SOL_SOCKET,
1897
1177
SO_BINDTODEVICE,
1898
1178
str(self.interface
1899
+ '\0'))
1900
except socket.error as error:
1179
+ u'\0'))
1180
except socket.error, error:
1901
1181
if error[0] == errno.EPERM:
1902
logger.error("No permission to"
1903
" bind to interface %s",
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1904
1184
self.interface)
1905
1185
elif error[0] == errno.ENOPROTOOPT:
1906
logger.error("SO_BINDTODEVICE not available;"
1907
" cannot bind to interface %s",
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1908
1188
self.interface)
1909
1189
else:
1910
1190
raise
1912
1192
if self.server_address[0] or self.server_address[1]:
1913
1193
if not self.server_address[0]:
1914
1194
if self.address_family == socket.AF_INET6:
1915
any_address = "::" # in6addr_any
1195
any_address = u"::" # in6addr_any
1916
1196
else:
1917
1197
any_address = socket.INADDR_ANY
1918
1198
self.server_address = (any_address,
1945
1225
self.enabled = False
1946
1226
self.clients = clients
1947
1227
if self.clients is None:
1948
self.clients = {}
1228
self.clients = set()
1949
1229
self.use_dbus = use_dbus
1950
1230
self.gnutls_priority = gnutls_priority
1951
1231
IPv6_TCPServer.__init__(self, server_address,
1955
1235
def server_activate(self):
1956
1236
if self.enabled:
1957
1237
return socketserver.TCPServer.server_activate(self)
1958
1959
1238
def enable(self):
1960
1239
self.enabled = True
1961
1962
def add_pipe(self, parent_pipe, proc):
1240
def add_pipe(self, pipe):
1963
1241
# Call "handle_ipc" for both data and EOF events
1964
gobject.io_add_watch(parent_pipe.fileno(),
1965
gobject.IO_IN | gobject.IO_HUP,
1966
functools.partial(self.handle_ipc,
1967
parent_pipe =
1968
parent_pipe,
1969
proc = proc))
1970
1971
def handle_ipc(self, source, condition, parent_pipe=None,
1972
proc = None, client_object=None):
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1973
1245
condition_names = {
1974
gobject.IO_IN: "IN", # There is data to read.
1975
gobject.IO_OUT: "OUT", # Data can be written (without
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1976
1248
# blocking).
1977
gobject.IO_PRI: "PRI", # There is urgent data to read.
1978
gobject.IO_ERR: "ERR", # Error condition.
1979
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1980
1252
# broken, usually for pipes and
1981
1253
# sockets).
1982
1254
}
1984
1256
for cond, name in
1985
1257
condition_names.iteritems()
1986
1258
if cond & condition)
1987
# error, or the other end of multiprocessing.Pipe has closed
1988
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1989
# Wait for other process to exit
1990
proc.join()
1991
return False
1992
1993
# Read a request from the child
1994
request = parent_pipe.recv()
1995
command = request[0]
1996
1997
if command == 'init':
1998
fpr = request[1]
1999
address = request[2]
2000
2001
for c in self.clients.itervalues():
2002
if c.fingerprint == fpr:
2003
client = c
2004
break
2005
else:
2006
logger.info("Client not found for fingerprint: %s, ad"
2007
"dress: %s", fpr, address)
2008
if self.use_dbus:
2009
# Emit D-Bus signal
2010
mandos_dbus_service.ClientNotFound(fpr,
2011
address[0])
2012
parent_pipe.send(False)
2013
return False
2014
2015
gobject.io_add_watch(parent_pipe.fileno(),
2016
gobject.IO_IN | gobject.IO_HUP,
2017
functools.partial(self.handle_ipc,
2018
parent_pipe =
2019
parent_pipe,
2020
proc = proc,
2021
client_object =
2022
client))
2023
parent_pipe.send(True)
2024
# remove the old hook in favor of the new above hook on
2025
# same fileno
2026
return False
2027
if command == 'funcall':
2028
funcname = request[1]
2029
args = request[2]
2030
kwargs = request[3]
2031
2032
parent_pipe.send(('data', getattr(client_object,
2033
funcname)(*args,
2034
**kwargs)))
2035
2036
if command == 'getattr':
2037
attrname = request[1]
2038
if callable(client_object.__getattribute__(attrname)):
2039
parent_pipe.send(('function',))
2040
else:
2041
parent_pipe.send(('data', client_object
2042
.__getattribute__(attrname)))
2043
2044
if command == 'setattr':
2045
attrname = request[1]
2046
value = request[2]
2047
setattr(client_object, attrname, value)
2048
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
2049
1313
return True
2050
1314
2051
1315
2052
1316
def string_to_delta(interval):
2053
1317
"""Parse a string and return a datetime.timedelta
2054
1318
2055
>>> string_to_delta('7d')
1319
>>> string_to_delta(u'7d')
2056
1320
datetime.timedelta(7)
2057
>>> string_to_delta('60s')
1321
>>> string_to_delta(u'60s')
2058
1322
datetime.timedelta(0, 60)
2059
>>> string_to_delta('60m')
1323
>>> string_to_delta(u'60m')
2060
1324
datetime.timedelta(0, 3600)
2061
>>> string_to_delta('24h')
1325
>>> string_to_delta(u'24h')
2062
1326
datetime.timedelta(1)
2063
>>> string_to_delta('1w')
1327
>>> string_to_delta(u'1w')
2064
1328
datetime.timedelta(7)
2065
>>> string_to_delta('5m 30s')
1329
>>> string_to_delta(u'5m 30s')
2066
1330
datetime.timedelta(0, 330)
2067
1331
"""
2068
1332
timevalue = datetime.timedelta(0)
2070
1334
try:
2071
1335
suffix = unicode(s[-1])
2072
1336
value = int(s[:-1])
2073
if suffix == "d":
1337
if suffix == u"d":
2074
1338
delta = datetime.timedelta(value)
2075
elif suffix == "s":
1339
elif suffix == u"s":
2076
1340
delta = datetime.timedelta(0, value)
2077
elif suffix == "m":
1341
elif suffix == u"m":
2078
1342
delta = datetime.timedelta(0, 0, 0, 0, value)
2079
elif suffix == "h":
1343
elif suffix == u"h":
2080
1344
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2081
elif suffix == "w":
1345
elif suffix == u"w":
2082
1346
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2083
1347
else:
2084
raise ValueError("Unknown suffix {0!r}"
2085
.format(suffix))
2086
except (ValueError, IndexError) as e:
2087
raise ValueError(*(e.args))
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
2088
1351
timevalue += delta
2089
1352
return timevalue
2090
1353
2091
1354
1355
def if_nametoindex(interface):
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
1359
global if_nametoindex
1360
try:
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1363
.if_nametoindex)
1364
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1366
def if_nametoindex(interface):
1367
"Get an interface index the hard way, i.e. using fcntl()"
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
1375
return interface_index
1376
return if_nametoindex(interface)
1377
1378
2092
1379
def daemon(nochdir = False, noclose = False):
2093
1380
"""See daemon(3). Standard BSD Unix function.
2094
1381
2097
1384
sys.exit()
2098
1385
os.setsid()
2099
1386
if not nochdir:
2100
os.chdir("/")
1387
os.chdir(u"/")
2101
1388
if os.fork():
2102
1389
sys.exit()
2103
1390
if not noclose:
2104
1391
# Close all standard open file descriptors
2105
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1392
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2106
1393
if not stat.S_ISCHR(os.fstat(null).st_mode):
2107
1394
raise OSError(errno.ENODEV,
2108
"{0} not a character device"
2109
.format(os.devnull))
1395
u"%s not a character device"
1396
% os.path.devnull)
2110
1397
os.dup2(null, sys.stdin.fileno())
2111
1398
os.dup2(null, sys.stdout.fileno())
2112
1399
os.dup2(null, sys.stderr.fileno())
2119
1406
##################################################################
2120
1407
# Parsing of options, both command line and config file
2121
1408
2122
parser = argparse.ArgumentParser()
2123
parser.add_argument("-v", "--version", action="version",
2124
version = "%(prog)s {0}".format(version),
2125
help="show version number and exit")
2126
parser.add_argument("-i", "--interface", metavar="IF",
2127
help="Bind to interface IF")
2128
parser.add_argument("-a", "--address",
2129
help="Address to listen for requests on")
2130
parser.add_argument("-p", "--port", type=int,
2131
help="Port number to receive requests on")
2132
parser.add_argument("--check", action="store_true",
2133
help="Run self-test")
2134
parser.add_argument("--debug", action="store_true",
2135
help="Debug mode; run in foreground and log"
2136
" to terminal")
2137
parser.add_argument("--debuglevel", metavar="LEVEL",
2138
help="Debug level for stdout output")
2139
parser.add_argument("--priority", help="GnuTLS"
2140
" priority string (see GnuTLS documentation)")
2141
parser.add_argument("--servicename",
2142
metavar="NAME", help="Zeroconf service name")
2143
parser.add_argument("--configdir",
2144
default="/etc/mandos", metavar="DIR",
2145
help="Directory to search for configuration"
2146
" files")
2147
parser.add_argument("--no-dbus", action="store_false",
2148
dest="use_dbus", help="Do not provide D-Bus"
2149
" system bus interface")
2150
parser.add_argument("--no-ipv6", action="store_false",
2151
dest="use_ipv6", help="Do not use IPv6")
2152
parser.add_argument("--no-restore", action="store_false",
2153
dest="restore", help="Do not restore stored"
2154
" state")
2155
parser.add_argument("--statedir", metavar="DIR",
2156
help="Directory to save/restore state in")
2157
2158
options = parser.parse_args()
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
2159
1435
2160
1436
if options.check:
2161
1437
import doctest
2163
1439
sys.exit()
2164
1440
2165
1441
# Default values for config file for server-global settings
2166
server_defaults = { "interface": "",
2167
"address": "",
2168
"port": "",
2169
"debug": "False",
2170
"priority":
2171
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2172
"servicename": "Mandos",
2173
"use_dbus": "True",
2174
"use_ipv6": "True",
2175
"debuglevel": "",
2176
"restore": "True",
2177
"statedir": "/var/lib/mandos"
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
2178
1451
}
2179
1452
2180
1453
# Parse config file for server-global settings
2181
1454
server_config = configparser.SafeConfigParser(server_defaults)
2182
1455
del server_defaults
2183
1456
server_config.read(os.path.join(options.configdir,
2184
"mandos.conf"))
1457
u"mandos.conf"))
2185
1458
# Convert the SafeConfigParser object to a dict
2186
1459
server_settings = server_config.defaults()
2187
1460
# Use the appropriate methods on the non-string config options
2188
for option in ("debug", "use_dbus", "use_ipv6"):
2189
server_settings[option] = server_config.getboolean("DEFAULT",
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
2190
1463
option)
2191
1464
if server_settings["port"]:
2192
server_settings["port"] = server_config.getint("DEFAULT",
2193
"port")
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
2194
1467
del server_config
2195
1468
2196
1469
# Override the settings from the config file with command line
2197
1470
# options, if set.
2198
for option in ("interface", "address", "port", "debug",
2199
"priority", "servicename", "configdir",
2200
"use_dbus", "use_ipv6", "debuglevel", "restore",
2201
"statedir"):
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
2202
1474
value = getattr(options, option)
2203
1475
if value is not None:
2204
1476
server_settings[option] = value
2212
1484
##################################################################
2213
1485
2214
1486
# For convenience
2215
debug = server_settings["debug"]
2216
debuglevel = server_settings["debuglevel"]
2217
use_dbus = server_settings["use_dbus"]
2218
use_ipv6 = server_settings["use_ipv6"]
2219
stored_state_path = os.path.join(server_settings["statedir"],
2220
stored_state_file)
2221
2222
if debug:
2223
initlogger(debug, logging.DEBUG)
2224
else:
2225
if not debuglevel:
2226
initlogger(debug)
2227
else:
2228
level = getattr(logging, debuglevel.upper())
2229
initlogger(debug, level)
2230
2231
if server_settings["servicename"] != "Mandos":
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
2232
1496
syslogger.setFormatter(logging.Formatter
2233
('Mandos ({0}) [%(process)d]:'
2234
' %(levelname)s: %(message)s'
2235
.format(server_settings
2236
["servicename"])))
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
2237
1500
2238
1501
# Parse config file with clients
2239
client_config = configparser.SafeConfigParser(Client
2240
.client_defaults)
2241
client_config.read(os.path.join(server_settings["configdir"],
2242
"clients.conf"))
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1506
}
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
2243
1510
2244
1511
global mandos_dbus_service
2245
1512
mandos_dbus_service = None
2246
1513
2247
tcp_server = MandosServer((server_settings["address"],
2248
server_settings["port"]),
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
2249
1516
ClientHandler,
2250
interface=(server_settings["interface"]
2251
or None),
1517
interface=server_settings[u"interface"],
2252
1518
use_ipv6=use_ipv6,
2253
1519
gnutls_priority=
2254
server_settings["priority"],
1520
server_settings[u"priority"],
2255
1521
use_dbus=use_dbus)
2256
if not debug:
2257
pidfilename = "/var/run/mandos.pid"
2258
try:
2259
pidfile = open(pidfilename, "w")
2260
except IOError as e:
2261
logger.error("Could not open file %r", pidfilename,
2262
exc_info=e)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
2263
1527
2264
for name in ("_mandos", "mandos", "nobody"):
1528
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
1531
except KeyError:
2265
1532
try:
2266
uid = pwd.getpwnam(name).pw_uid
2267
gid = pwd.getpwnam(name).pw_gid
2268
break
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
2269
1535
except KeyError:
2270
continue
2271
else:
2272
uid = 65534
2273
gid = 65534
1536
try:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1539
except KeyError:
1540
uid = 65534
1541
gid = 65534
2274
1542
try:
2275
1543
os.setgid(gid)
2276
1544
os.setuid(uid)
2277
except OSError as error:
1545
except OSError, error:
2278
1546
if error[0] != errno.EPERM:
2279
1547
raise error
2280
1548
1549
# Enable all possible GnuTLS debugging
2281
1550
if debug:
2282
# Enable all possible GnuTLS debugging
2283
2284
1551
# "Use a log level over 10 to enable all debugging options."
2285
1552
# - GnuTLS manual
2286
1553
gnutls.library.functions.gnutls_global_set_log_level(11)
2287
1554
2288
1555
@gnutls.library.types.gnutls_log_func
2289
1556
def debug_gnutls(level, string):
2290
logger.debug("GnuTLS: %s", string[:-1])
1557
logger.debug(u"GnuTLS: %s", string[:-1])
2291
1558
2292
1559
(gnutls.library.functions
2293
1560
.gnutls_global_set_log_function(debug_gnutls))
2294
2295
# Redirect stdin so all checkers get /dev/null
2296
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2297
os.dup2(null, sys.stdin.fileno())
2298
if null > 2:
2299
os.close(null)
2300
2301
# Need to fork before connecting to D-Bus
2302
if not debug:
2303
# Close all input and output, do double fork, etc.
2304
daemon()
2305
2306
gobject.threads_init()
2307
1561
2308
1562
global main_loop
2309
1563
# From the Avahi example code
2310
DBusGMainLoop(set_as_default=True)
1564
DBusGMainLoop(set_as_default=True )
2311
1565
main_loop = gobject.MainLoop()
2312
1566
bus = dbus.SystemBus()
2313
1567
# End of Avahi example code
2314
1568
if use_dbus:
2315
try:
2316
bus_name = dbus.service.BusName("se.recompile.Mandos",
2317
bus, do_not_queue=True)
2318
old_bus_name = (dbus.service.BusName
2319
("se.bsnet.fukt.Mandos", bus,
2320
do_not_queue=True))
2321
except dbus.exceptions.NameExistsException as e:
2322
logger.error("Disabling D-Bus:", exc_info=e)
2323
use_dbus = False
2324
server_settings["use_dbus"] = False
2325
tcp_server.use_dbus = False
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2326
1570
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2327
service = AvahiServiceToSyslog(name =
2328
server_settings["servicename"],
2329
servicetype = "_mandos._tcp",
2330
protocol = protocol, bus = bus)
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
2331
1574
if server_settings["interface"]:
2332
1575
service.interface = (if_nametoindex
2333
(str(server_settings["interface"])))
2334
2335
global multiprocessing_manager
2336
multiprocessing_manager = multiprocessing.Manager()
1576
(str(server_settings[u"interface"])))
2337
1577
2338
1578
client_class = Client
2339
1579
if use_dbus:
2340
client_class = functools.partial(ClientDBusTransitional,
2341
bus = bus)
2342
2343
client_settings = Client.config_parser(client_config)
2344
old_client_settings = {}
2345
clients_data = {}
2346
2347
# Get client data and settings from last running state.
2348
if server_settings["restore"]:
2349
try:
2350
with open(stored_state_path, "rb") as stored_state:
2351
clients_data, old_client_settings = (pickle.load
2352
(stored_state))
2353
os.remove(stored_state_path)
2354
except IOError as e:
2355
if e.errno == errno.ENOENT:
2356
logger.warning("Could not load persistent state: {0}"
2357
.format(os.strerror(e.errno)))
2358
else:
2359
logger.critical("Could not load persistent state:",
2360
exc_info=e)
2361
raise
2362
except EOFError as e:
2363
logger.warning("Could not load persistent state: "
2364
"EOFError:", exc_info=e)
2365
2366
with PGPEngine() as pgp:
2367
for client_name, client in clients_data.iteritems():
2368
# Decide which value to use after restoring saved state.
2369
# We have three different values: Old config file,
2370
# new config file, and saved state.
2371
# New config value takes precedence if it differs from old
2372
# config value, otherwise use saved state.
2373
for name, value in client_settings[client_name].items():
2374
try:
2375
# For each value in new config, check if it
2376
# differs from the old config value (Except for
2377
# the "secret" attribute)
2378
if (name != "secret" and
2379
value != old_client_settings[client_name]
2380
[name]):
2381
client[name] = value
2382
except KeyError:
2383
pass
2384
2385
# Clients who has passed its expire date can still be
2386
# enabled if its last checker was successful. Clients
2387
# whose checker succeeded before we stored its state is
2388
# assumed to have successfully run all checkers during
2389
# downtime.
2390
if client["enabled"]:
2391
if datetime.datetime.utcnow() >= client["expires"]:
2392
if not client["last_checked_ok"]:
2393
logger.warning(
2394
"disabling client {0} - Client never "
2395
"performed a successful checker"
2396
.format(client_name))
2397
client["enabled"] = False
2398
elif client["last_checker_status"] != 0:
2399
logger.warning(
2400
"disabling client {0} - Client "
2401
"last checker failed with error code {1}"
2402
.format(client_name,
2403
client["last_checker_status"]))
2404
client["enabled"] = False
2405
else:
2406
client["expires"] = (datetime.datetime
2407
.utcnow()
2408
+ client["timeout"])
2409
logger.debug("Last checker succeeded,"
2410
" keeping {0} enabled"
2411
.format(client_name))
2412
try:
2413
client["secret"] = (
2414
pgp.decrypt(client["encrypted_secret"],
2415
client_settings[client_name]
2416
["secret"]))
2417
except PGPError:
2418
# If decryption fails, we use secret from new settings
2419
logger.debug("Failed to decrypt {0} old secret"
2420
.format(client_name))
2421
client["secret"] = (
2422
client_settings[client_name]["secret"])
2423
2424
# Add/remove clients based on new changes made to config
2425
for client_name in (set(old_client_settings)
2426
- set(client_settings)):
2427
del clients_data[client_name]
2428
for client_name in (set(client_settings)
2429
- set(old_client_settings)):
2430
clients_data[client_name] = client_settings[client_name]
2431
2432
# Create all client objects
2433
for client_name, client in clients_data.iteritems():
2434
tcp_server.clients[client_name] = client_class(
2435
name = client_name, settings = client)
2436
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
2437
1585
if not tcp_server.clients:
2438
logger.warning("No clients defined")
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1604
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
1616
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
2439
1623
2440
1624
if not debug:
2441
try:
2442
with pidfile:
2443
pid = os.getpid()
2444
pidfile.write(str(pid) + "\n".encode("utf-8"))
2445
del pidfile
2446
except IOError:
2447
logger.error("Could not write to file %r with PID %d",
2448
pidfilename, pid)
2449
except NameError:
2450
# "pidfile" was never created
2451
pass
2452
del pidfilename
2453
1625
signal.signal(signal.SIGINT, signal.SIG_IGN)
2454
2455
1626
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2456
1627
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2457
1628
2458
1629
if use_dbus:
2459
class MandosDBusService(DBusObjectWithProperties):
1630
class MandosDBusService(dbus.service.Object):
2460
1631
"""A D-Bus proxy object"""
2461
1632
def __init__(self):
2462
dbus.service.Object.__init__(self, bus, "/")
2463
_interface = "se.recompile.Mandos"
2464
2465
@dbus_interface_annotations(_interface)
2466
def _foo(self):
2467
return { "org.freedesktop.DBus.Property"
2468
".EmitsChangedSignal":
2469
"false"}
2470
2471
@dbus.service.signal(_interface, signature="o")
2472
def ClientAdded(self, objpath):
2473
"D-Bus signal"
2474
pass
2475
2476
@dbus.service.signal(_interface, signature="ss")
2477
def ClientNotFound(self, fingerprint, address):
2478
"D-Bus signal"
2479
pass
2480
2481
@dbus.service.signal(_interface, signature="os")
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
2482
1647
def ClientRemoved(self, objpath, name):
2483
1648
"D-Bus signal"
2484
1649
pass
2485
1650
2486
@dbus.service.method(_interface, out_signature="ao")
1651
@dbus.service.method(_interface, out_signature=u"ao")
2487
1652
def GetAllClients(self):
2488
1653
"D-Bus method"
2489
1654
return dbus.Array(c.dbus_object_path
2490
for c in
2491
tcp_server.clients.itervalues())
1655
for c in tcp_server.clients)
2492
1656
2493
1657
@dbus.service.method(_interface,
2494
out_signature="a{oa{sv}}")
1658
out_signature=u"a{oa{sv}}")
2495
1659
def GetAllClientsWithProperties(self):
2496
1660
"D-Bus method"
2497
1661
return dbus.Dictionary(
2498
((c.dbus_object_path, c.GetAll(""))
2499
for c in tcp_server.clients.itervalues()),
2500
signature="oa{sv}")
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2501
1665
2502
@dbus.service.method(_interface, in_signature="o")
1666
@dbus.service.method(_interface, in_signature=u"o")
2503
1667
def RemoveClient(self, object_path):
2504
1668
"D-Bus method"
2505
for c in tcp_server.clients.itervalues():
1669
for c in tcp_server.clients:
2506
1670
if c.dbus_object_path == object_path:
2507
del tcp_server.clients[c.name]
1671
tcp_server.clients.remove(c)
2508
1672
c.remove_from_connection()
2509
1673
# Don't signal anything except ClientRemoved
2510
c.disable(quiet=True)
1674
c.disable(signal=False)
2511
1675
# Emit D-Bus signal
2512
1676
self.ClientRemoved(object_path, c.name)
2513
1677
return
2514
raise KeyError(object_path)
1678
raise KeyError
2515
1679
2516
1680
del _interface
2517
1681
2518
class MandosDBusServiceTransitional(MandosDBusService):
2519
__metaclass__ = AlternateDBusNamesMetaclass
2520
mandos_dbus_service = MandosDBusServiceTransitional()
2521
2522
def cleanup():
2523
"Cleanup function; run on exit"
2524
service.cleanup()
2525
2526
multiprocessing.active_children()
2527
if not (tcp_server.clients or client_settings):
2528
return
2529
2530
# Store client before exiting. Secrets are encrypted with key
2531
# based on what config file has. If config file is
2532
# removed/edited, old secret will thus be unrecovable.
2533
clients = {}
2534
with PGPEngine() as pgp:
2535
for client in tcp_server.clients.itervalues():
2536
key = client_settings[client.name]["secret"]
2537
client.encrypted_secret = pgp.encrypt(client.secret,
2538
key)
2539
client_dict = {}
2540
2541
# A list of attributes that can not be pickled
2542
# + secret.
2543
exclude = set(("bus", "changedstate", "secret",
2544
"checker"))
2545
for name, typ in (inspect.getmembers
2546
(dbus.service.Object)):
2547
exclude.add(name)
2548
2549
client_dict["encrypted_secret"] = (client
2550
.encrypted_secret)
2551
for attr in client.client_structure:
2552
if attr not in exclude:
2553
client_dict[attr] = getattr(client, attr)
2554
2555
clients[client.name] = client_dict
2556
del client_settings[client.name]["secret"]
2557
2558
try:
2559
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2560
prefix="clients-",
2561
dir=os.path.dirname
2562
(stored_state_path))
2563
with os.fdopen(tempfd, "wb") as stored_state:
2564
pickle.dump((clients, client_settings), stored_state)
2565
os.rename(tempname, stored_state_path)
2566
except (IOError, OSError) as e:
2567
if not debug:
2568
try:
2569
os.remove(tempname)
2570
except NameError:
2571
pass
2572
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2573
logger.warning("Could not save persistent state: {0}"
2574
.format(os.strerror(e.errno)))
2575
else:
2576
logger.warning("Could not save persistent state:",
2577
exc_info=e)
2578
raise e
2579
2580
# Delete all clients, and settings from config
2581
while tcp_server.clients:
2582
name, client = tcp_server.clients.popitem()
2583
if use_dbus:
2584
client.remove_from_connection()
2585
# Don't signal anything except ClientRemoved
2586
client.disable(quiet=True)
2587
if use_dbus:
2588
# Emit D-Bus signal
2589
mandos_dbus_service.ClientRemoved(client
2590
.dbus_object_path,
2591
client.name)
2592
client_settings.clear()
2593
2594
atexit.register(cleanup)
2595
2596
for client in tcp_server.clients.itervalues():
1682
mandos_dbus_service = MandosDBusService()
1683
1684
for client in tcp_server.clients:
2597
1685
if use_dbus:
2598
1686
# Emit D-Bus signal
2599
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2600
# Need to initiate checking of clients
2601
if client.enabled:
2602
client.init_checker()
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1689
client.enable()
2603
1690
2604
1691
tcp_server.enable()
2605
1692
tcp_server.server_activate()
2607
1694
# Find out what port we got
2608
1695
service.port = tcp_server.socket.getsockname()[1]
2609
1696
if use_ipv6:
2610
logger.info("Now listening on address %r, port %d,"
2611
" flowinfo %d, scope_id %d",
2612
*tcp_server.socket.getsockname())
1697
logger.info(u"Now listening on address %r, port %d,"
1698
" flowinfo %d, scope_id %d"
1699
% tcp_server.socket.getsockname())
2613
1700
else: # IPv4
2614
logger.info("Now listening on address %r, port %d",
2615
*tcp_server.socket.getsockname())
1701
logger.info(u"Now listening on address %r, port %d"
1702
% tcp_server.socket.getsockname())
2616
1703
2617
1704
#service.interface = tcp_server.socket.getsockname()[3]
2618
1705
2620
1707
# From the Avahi example code
2621
1708
try:
2622
1709
service.activate()
2623
except dbus.exceptions.DBusException as error:
2624
logger.critical("D-Bus Exception", exc_info=error)
2625
cleanup()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2626
1712
sys.exit(1)
2627
1713
# End of Avahi example code
2628
1714
2631
1717
(tcp_server.handle_request
2632
1718
(*args[2:], **kwargs) or True))
2633
1719
2634
logger.debug("Starting main loop")
1720
logger.debug(u"Starting main loop")
2635
1721
main_loop.run()
2636
except AvahiError as error:
2637
logger.critical("Avahi Error", exc_info=error)
2638
cleanup()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2639
1724
sys.exit(1)
2640
1725
except KeyboardInterrupt:
2641
1726
if debug:
2642
print("", file=sys.stderr)
2643
logger.debug("Server received KeyboardInterrupt")
2644
logger.debug("Server exiting")
2645
# Must run before the D-Bus bus name gets deregistered
2646
cleanup()
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
2647
1730
2648
1731
if __name__ == '__main__':
2649
1732
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0