To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 482
- compare with another revision
- download diff
- download tarball
- view history from revision 482
- Committer: Teddy Hogeborn
- Date: 2011-04-02 06:37:18 UTC
- Revision ID: teddy@fukt.bsnet.se-20110402063718-13ldrcuu0t33sdc4
* mandos: Tolerate restarting Avahi servers. Also Changed to new
"except x as y" exception syntax.
(AvahiService.entry_group_state_changed_match): New; contains the
SignalMatch object.
(AvahiService.remove): Really remove the group and the signal
connection, if any.
(AvahiService.add): Always create a new group and signal connection.
(AvahiService.cleanup): Changed to simply call remove().
(AvahiService.server_state_changed): Handle and log more bad states.
(AvahiService.activate): Set "follow_name_owner_changes=True" on the
Avahi Server proxy object.
(ClientDBus.checked_ok): Do not return anything.
(ClientDBus.CheckedOK): Do not return anything, as documented.
* mandos-monitor: Call D-Bus methods asynchronously.
"except x as y" exception syntax.
(AvahiService.entry_group_state_changed_match): New; contains the
SignalMatch object.
(AvahiService.remove): Really remove the group and the signal
connection, if any.
(AvahiService.add): Always create a new group and signal connection.
(AvahiService.cleanup): Changed to simply call remove().
(AvahiService.server_state_changed): Handle and log more bad states.
(AvahiService.activate): Set "follow_name_owner_changes=True" on the
Avahi Server proxy object.
(ClientDBus.checked_ok): Do not return anything.
(ClientDBus.CheckedOK): Do not return anything, as documented.
* mandos-monitor: Call D-Bus methods asynchronously.
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
31
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
41
42
import gnutls.crypto
55
56
import logging
56
57
import logging.handlers
57
58
import pwd
58
from contextlib import closing
59
import contextlib
59
60
import struct
60
61
import fcntl
61
62
import functools
63
import cPickle as pickle
64
import multiprocessing
62
65
63
66
import dbus
64
67
import dbus.service
79
82
SO_BINDTODEVICE = None
80
83
81
84
82
version = "1.0.12"
85
version = "1.3.0"
83
86
84
logger = logging.Logger(u'mandos')
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
85
89
syslogger = (logging.handlers.SysLogHandler
86
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
91
address = str("/dev/log")))
88
92
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
91
95
logger.addHandler(syslogger)
92
96
93
97
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
97
101
logger.addHandler(console)
98
102
99
103
class AvahiError(Exception):
116
120
Attributes:
117
121
interface: integer; avahi.IF_UNSPEC or an interface index.
118
122
Used to optionally bind to the specified interface.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
123
name: string; Example: 'Mandos'
124
type: string; Example: '_mandos._tcp'.
121
125
See <http://www.dns-sd.org/ServiceTypes.html>
122
126
port: integer; what port to announce
123
127
TXT: list of strings; TXT record for the service
132
136
"""
133
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
138
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
139
domain = "", host = "", max_renames = 32768,
136
140
protocol = avahi.PROTO_UNSPEC, bus = None):
137
141
self.interface = interface
138
142
self.name = name
147
151
self.group = None # our entry group
148
152
self.server = None
149
153
self.bus = bus
154
self.entry_group_state_changed_match = None
150
155
def rename(self):
151
156
"""Derived from the Avahi example code"""
152
157
if self.rename_count >= self.max_renames:
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
158
logger.critical("No suitable Zeroconf service name found"
159
" after %i retries, exiting.",
155
160
self.rename_count)
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))
161
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
163
logger.info("Changing Zeroconf service name to %r ...",
164
self.name)
160
165
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
163
168
% self.name))
164
169
self.remove()
165
self.add()
170
try:
171
self.add()
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
166
176
self.rename_count += 1
167
177
def remove(self):
168
178
"""Derived from the Avahi example code"""
169
179
if self.group is not None:
170
self.group.Reset()
180
try:
181
self.group.Free()
182
except (dbus.exceptions.UnknownMethodException,
183
dbus.exceptions.DBusException) as e:
184
pass
185
self.group = None
186
if self.entry_group_state_changed_match is not None:
187
self.entry_group_state_changed_match.remove()
188
self.entry_group_state_changed_match = None
171
189
def add(self):
172
190
"""Derived from the Avahi example code"""
173
if self.group is None:
174
self.group = dbus.Interface(
175
self.bus.get_object(avahi.DBUS_NAME,
176
self.server.EntryGroupNew()),
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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' ...",
191
self.remove()
192
self.group = dbus.Interface(
193
self.bus.get_object(avahi.DBUS_NAME,
194
self.server.EntryGroupNew(),
195
follow_name_owner_changes=True),
196
avahi.DBUS_INTERFACE_ENTRY_GROUP)
197
self.entry_group_state_changed_match = (
198
self.group.connect_to_signal(
199
'StateChanged', self .entry_group_state_changed))
200
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
182
201
self.name, self.type)
183
202
self.group.AddService(
184
203
self.interface,
191
210
self.group.Commit()
192
211
def entry_group_state_changed(self, state, error):
193
212
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
213
logger.debug("Avahi entry group state change: %i", state)
195
214
196
215
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
216
logger.debug("Zeroconf service established.")
198
217
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
218
logger.info("Zeroconf service name collision.")
200
219
self.rename()
201
220
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
221
logger.critical("Avahi: Error in group state changed %s",
203
222
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
223
raise AvahiGroupError("State changed: %s"
205
224
% unicode(error))
206
225
def cleanup(self):
207
226
"""Derived from the Avahi example code"""
208
if self.group is not None:
209
self.group.Free()
210
self.group = None
211
def server_state_changed(self, state):
227
self.remove()
228
def server_state_changed(self, state, error=None):
212
229
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
230
logger.debug("Avahi server state change: %i", state)
231
bad_states = { avahi.SERVER_INVALID:
232
"Zeroconf server invalid",
233
avahi.SERVER_REGISTERING: None,
234
avahi.SERVER_COLLISION:
235
"Zeroconf server name collision",
236
avahi.SERVER_FAILURE:
237
"Zeroconf server failure" }
238
if state in bad_states:
239
if bad_states[state]:
240
logger.error(bad_states[state])
215
241
self.remove()
216
242
elif state == avahi.SERVER_RUNNING:
217
243
self.add()
244
else:
245
logger.debug("Unknown state: %r", state)
218
246
def activate(self):
219
247
"""Derived from the Avahi example code"""
220
248
if self.server is None:
221
249
self.server = dbus.Interface(
222
250
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
251
avahi.DBUS_PATH_SERVER,
252
follow_name_owner_changes=True),
224
253
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
254
self.server.connect_to_signal("StateChanged",
226
255
self.server_state_changed)
227
256
self.server_state_changed(self.server.GetState())
228
257
231
260
"""A representation of a client host served by this server.
232
261
233
262
Attributes:
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)
263
_approved: bool(); 'None' if not yet approved/disapproved
264
approval_delay: datetime.timedelta(); Time to wait for approval
265
approval_duration: datetime.timedelta(); Duration of one approval
248
266
checker: subprocess.Popen(); a running checker process used
249
267
to see if the client lives.
250
268
'None' if no process is running.
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
269
checker_callback_tag: a gobject event source tag, or None
270
checker_command: string; External command which is run to check
271
if client lives. %() expansions are done at
256
272
runtime with vars(self) as dict, so that for
257
273
instance %(name)s can be used in the command.
274
checker_initiator_tag: a gobject event source tag, or None
275
created: datetime.datetime(); (UTC) object creation
258
276
current_checker_command: string; current running checker_command
277
disable_hook: If set, called by disable() as disable_hook(self)
278
disable_initiator_tag: a gobject event source tag, or None
279
enabled: bool()
280
fingerprint: string (40 or 32 hexadecimal digits); used to
281
uniquely identify the client
282
host: string; available for use by the checker command
283
interval: datetime.timedelta(); How often to start a new checker
284
last_approval_request: datetime.datetime(); (UTC) or None
285
last_checked_ok: datetime.datetime(); (UTC) or None
286
last_enabled: datetime.datetime(); (UTC)
287
name: string; from the config file, used in log messages and
288
D-Bus identifiers
289
secret: bytestring; sent verbatim (over TLS) to client
290
timeout: datetime.timedelta(); How long from last_checked_ok
291
until this client is disabled
292
runtime_expansions: Allowed attributes for runtime expansion.
259
293
"""
260
294
295
runtime_expansions = ("approval_delay", "approval_duration",
296
"created", "enabled", "fingerprint",
297
"host", "interval", "last_checked_ok",
298
"last_enabled", "name", "timeout")
299
261
300
@staticmethod
262
301
def _timedelta_to_milliseconds(td):
263
302
"Convert a datetime.timedelta() to milliseconds"
272
311
def interval_milliseconds(self):
273
312
"Return the 'interval' attribute in milliseconds"
274
313
return self._timedelta_to_milliseconds(self.interval)
314
315
def approval_delay_milliseconds(self):
316
return self._timedelta_to_milliseconds(self.approval_delay)
275
317
276
318
def __init__(self, name = None, disable_hook=None, config=None):
277
319
"""Note: the 'checker' key in 'config' sets the
280
322
self.name = name
281
323
if config is None:
282
324
config = {}
283
logger.debug(u"Creating client %r", self.name)
325
logger.debug("Creating client %r", self.name)
284
326
# Uppercase and remove spaces from fingerprint for later
285
327
# comparison purposes with return value from the fingerprint()
286
328
# function
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:
329
self.fingerprint = (config["fingerprint"].upper()
330
.replace(" ", ""))
331
logger.debug(" Fingerprint: %s", self.fingerprint)
332
if "secret" in config:
333
self.secret = config["secret"].decode("base64")
334
elif "secfile" in config:
335
with open(os.path.expanduser(os.path.expandvars
336
(config["secfile"])),
337
"rb") as secfile:
297
338
self.secret = secfile.read()
298
339
else:
299
raise TypeError(u"No secret or secfile for client %s"
340
raise TypeError("No secret or secfile for client %s"
300
341
% self.name)
301
self.host = config.get(u"host", u"")
342
self.host = config.get("host", "")
302
343
self.created = datetime.datetime.utcnow()
303
344
self.enabled = False
345
self.last_approval_request = None
304
346
self.last_enabled = None
305
347
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
348
self.timeout = string_to_delta(config["timeout"])
349
self.interval = string_to_delta(config["interval"])
308
350
self.disable_hook = disable_hook
309
351
self.checker = None
310
352
self.checker_initiator_tag = None
311
353
self.disable_initiator_tag = None
312
354
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
355
self.checker_command = config["checker"]
314
356
self.current_checker_command = None
315
357
self.last_connect = None
358
self._approved = None
359
self.approved_by_default = config.get("approved_by_default",
360
True)
361
self.approvals_pending = 0
362
self.approval_delay = string_to_delta(
363
config["approval_delay"])
364
self.approval_duration = string_to_delta(
365
config["approval_duration"])
366
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
316
367
368
def send_changedstate(self):
369
self.changedstate.acquire()
370
self.changedstate.notify_all()
371
self.changedstate.release()
372
317
373
def enable(self):
318
374
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
375
if getattr(self, "enabled", False):
320
376
# Already enabled
321
377
return
378
self.send_changedstate()
322
379
self.last_enabled = datetime.datetime.utcnow()
323
380
# Schedule a new checker to be started an 'interval' from now,
324
381
# and every interval from then on.
325
382
self.checker_initiator_tag = (gobject.timeout_add
326
383
(self.interval_milliseconds(),
327
384
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
330
385
# Schedule a disable() when 'timeout' has passed
331
386
self.disable_initiator_tag = (gobject.timeout_add
332
387
(self.timeout_milliseconds(),
333
388
self.disable))
334
389
self.enabled = True
390
# Also start a new checker *right now*.
391
self.start_checker()
335
392
336
def disable(self):
393
def disable(self, quiet=True):
337
394
"""Disable this client."""
338
395
if not getattr(self, "enabled", False):
339
396
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
397
if not quiet:
398
self.send_changedstate()
399
if not quiet:
400
logger.info("Disabling client %s", self.name)
401
if getattr(self, "disable_initiator_tag", False):
342
402
gobject.source_remove(self.disable_initiator_tag)
343
403
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
404
if getattr(self, "checker_initiator_tag", False):
345
405
gobject.source_remove(self.checker_initiator_tag)
346
406
self.checker_initiator_tag = None
347
407
self.stop_checker()
362
422
if os.WIFEXITED(condition):
363
423
exitstatus = os.WEXITSTATUS(condition)
364
424
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
425
logger.info("Checker for %(name)s succeeded",
366
426
vars(self))
367
427
self.checked_ok()
368
428
else:
369
logger.info(u"Checker for %(name)s failed",
429
logger.info("Checker for %(name)s failed",
370
430
vars(self))
371
431
else:
372
logger.warning(u"Checker for %(name)s crashed?",
432
logger.warning("Checker for %(name)s crashed?",
373
433
vars(self))
374
434
375
435
def checked_ok(self):
384
444
(self.timeout_milliseconds(),
385
445
self.disable))
386
446
447
def need_approval(self):
448
self.last_approval_request = datetime.datetime.utcnow()
449
387
450
def start_checker(self):
388
451
"""Start a new checker subprocess if one is not running.
389
452
395
458
# client would inevitably timeout, since no checker would get
396
459
# a chance to run to completion. If we instead leave running
397
460
# checkers alone, the checker would have to take more time
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
461
# than 'timeout' for the client to be disabled, which is as it
462
# should be.
400
463
401
464
# If a checker exists, make sure it is not a zombie
402
465
try:
403
466
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
467
except (AttributeError, OSError) as error:
405
468
if (isinstance(error, OSError)
406
469
and error.errno != errno.ECHILD):
407
470
raise error
408
471
else:
409
472
if pid:
410
logger.warning(u"Checker was a zombie")
473
logger.warning("Checker was a zombie")
411
474
gobject.source_remove(self.checker_callback_tag)
412
475
self.checker_callback(pid, status,
413
476
self.current_checker_command)
418
481
command = self.checker_command % self.host
419
482
except TypeError:
420
483
# Escape attributes for the shell
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())
484
escaped_attrs = dict(
485
(attr,
486
re.escape(unicode(str(getattr(self, attr, "")),
487
errors=
488
'replace')))
489
for attr in
490
self.runtime_expansions)
491
427
492
try:
428
493
command = self.checker_command % escaped_attrs
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
494
except TypeError as error:
495
logger.error('Could not format string "%s":'
496
' %s', self.checker_command, error)
432
497
return True # Try again later
433
498
self.current_checker_command = command
434
499
try:
435
logger.info(u"Starting checker %r for %s",
500
logger.info("Starting checker %r for %s",
436
501
command, self.name)
437
502
# We don't need to redirect stdout and stderr, since
438
503
# in normal mode, that is already done by daemon(),
440
505
# always replaced by /dev/null.)
441
506
self.checker = subprocess.Popen(command,
442
507
close_fds=True,
443
shell=True, cwd=u"/")
508
shell=True, cwd="/")
444
509
self.checker_callback_tag = (gobject.child_watch_add
445
510
(self.checker.pid,
446
511
self.checker_callback,
451
516
if pid:
452
517
gobject.source_remove(self.checker_callback_tag)
453
518
self.checker_callback(pid, status, command)
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
519
except OSError as error:
520
logger.error("Failed to start subprocess: %s",
456
521
error)
457
522
# Re-run this periodically if run by gobject.timeout_add
458
523
return True
462
527
if self.checker_callback_tag:
463
528
gobject.source_remove(self.checker_callback_tag)
464
529
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
530
if getattr(self, "checker", None) is None:
466
531
return
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
532
logger.debug("Stopping checker for %(name)s", vars(self))
468
533
try:
469
534
os.kill(self.checker.pid, signal.SIGTERM)
470
#os.sleep(0.5)
535
#time.sleep(0.5)
471
536
#if self.checker.poll() is None:
472
537
# os.kill(self.checker.pid, signal.SIGKILL)
473
except OSError, error:
538
except OSError as error:
474
539
if error.errno != errno.ESRCH: # No such process
475
540
raise
476
541
self.checker = None
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):
542
543
def dbus_service_property(dbus_interface, signature="v",
544
access="readwrite", byte_arrays=False):
491
545
"""Decorators for marking methods of a DBusObjectWithProperties to
492
546
become properties on the D-Bus.
493
547
498
552
dbus.service.method, except there is only "signature", since the
499
553
type from Get() and the type sent to Set() is the same.
500
554
"""
555
# Encoding deeply encoded byte arrays is not supported yet by the
556
# "Set" method, so we fail early here:
557
if byte_arrays and signature != "ay":
558
raise ValueError("Byte arrays not supported for non-'ay'"
559
" signature %r" % signature)
501
560
def decorator(func):
502
561
func._dbus_is_property = True
503
562
func._dbus_interface = dbus_interface
504
563
func._dbus_signature = signature
505
564
func._dbus_access = access
506
565
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
566
if func._dbus_name.endswith("_dbus_property"):
508
567
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
568
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
510
569
return func
511
570
return decorator
512
571
540
599
541
600
@staticmethod
542
601
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
602
return getattr(obj, "_dbus_is_property", False)
544
603
545
604
def _get_all_dbus_properties(self):
546
605
"""Returns a generator of (name, attribute) pairs
554
613
property with the specified name and interface.
555
614
"""
556
615
for name in (property_name,
557
property_name + u"_dbus_property"):
616
property_name + "_dbus_property"):
558
617
prop = getattr(self, name, None)
559
618
if (prop is None
560
619
or not self._is_dbus_property(prop)
564
623
continue
565
624
return prop
566
625
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
626
raise DBusPropertyNotFound(self.dbus_object_path + ":"
627
+ interface_name + "."
569
628
+ property_name)
570
629
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
630
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
631
out_signature="v")
573
632
def Get(self, interface_name, property_name):
574
633
"""Standard D-Bus property Get() method, see D-Bus standard.
575
634
"""
576
635
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
636
if prop._dbus_access == "write":
578
637
raise DBusPropertyAccessException(property_name)
579
638
value = prop()
580
if not hasattr(value, u"variant_level"):
639
if not hasattr(value, "variant_level"):
581
640
return value
582
641
return type(value)(value, variant_level=value.variant_level+1)
583
642
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
643
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
644
def Set(self, interface_name, property_name, value):
586
645
"""Standard D-Bus property Set() method, see D-Bus standard.
587
646
"""
588
647
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
648
if prop._dbus_access == "read":
590
649
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
650
if prop._dbus_get_args_options["byte_arrays"]:
651
# The byte_arrays option is not supported yet on
652
# signatures other than "ay".
653
if prop._dbus_signature != "ay":
654
raise ValueError
592
655
value = dbus.ByteArray(''.join(unichr(byte)
593
656
for byte in value))
594
657
prop(value)
595
658
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
659
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
660
out_signature="a{sv}")
598
661
def GetAll(self, interface_name):
599
662
"""Standard D-Bus property GetAll() method, see D-Bus
600
663
standard.
608
671
# Interface non-empty but did not match
609
672
continue
610
673
# Ignore write-only properties
611
if prop._dbus_access == u"write":
674
if prop._dbus_access == "write":
612
675
continue
613
676
value = prop()
614
if not hasattr(value, u"variant_level"):
677
if not hasattr(value, "variant_level"):
615
678
all[name] = value
616
679
continue
617
680
all[name] = type(value)(value, variant_level=
618
681
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
682
return dbus.Dictionary(all, signature="sv")
620
683
621
684
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
685
out_signature="s",
623
686
path_keyword='object_path',
624
687
connection_keyword='connection')
625
688
def Introspect(self, object_path, connection):
630
693
try:
631
694
document = xml.dom.minidom.parseString(xmlstring)
632
695
def make_tag(document, name, prop):
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)
696
e = document.createElement("property")
697
e.setAttribute("name", name)
698
e.setAttribute("type", prop._dbus_signature)
699
e.setAttribute("access", prop._dbus_access)
637
700
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
701
for if_tag in document.getElementsByTagName("interface"):
639
702
for tag in (make_tag(document, name, prop)
640
703
for name, prop
641
704
in self._get_all_dbus_properties()
642
705
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
706
== if_tag.getAttribute("name")):
644
707
if_tag.appendChild(tag)
645
708
# Add the names to the return values for the
646
709
# "org.freedesktop.DBus.Properties" methods
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")
710
if (if_tag.getAttribute("name")
711
== "org.freedesktop.DBus.Properties"):
712
for cn in if_tag.getElementsByTagName("method"):
713
if cn.getAttribute("name") == "Get":
714
for arg in cn.getElementsByTagName("arg"):
715
if (arg.getAttribute("direction")
716
== "out"):
717
arg.setAttribute("name", "value")
718
elif cn.getAttribute("name") == "GetAll":
719
for arg in cn.getElementsByTagName("arg"):
720
if (arg.getAttribute("direction")
721
== "out"):
722
arg.setAttribute("name", "props")
723
xmlstring = document.toxml("utf-8")
661
724
document.unlink()
662
725
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
726
xml.parsers.expat.ExpatError) as error:
727
logger.error("Failed to override Introspection method",
665
728
error)
666
729
return xmlstring
667
730
673
736
dbus_object_path: dbus.ObjectPath
674
737
bus: dbus.SystemBus()
675
738
"""
739
740
runtime_expansions = (Client.runtime_expansions
741
+ ("dbus_object_path",))
742
676
743
# dbus.service.Object doesn't use super(), so we can't either.
677
744
678
745
def __init__(self, bus = None, *args, **kwargs):
746
self._approvals_pending = 0
679
747
self.bus = bus
680
748
Client.__init__(self, *args, **kwargs)
681
749
# Only now, when this client is initialized, can it show up on
682
750
# the D-Bus
751
client_object_name = unicode(self.name).translate(
752
{ord("."): ord("_"),
753
ord("-"): ord("_")})
683
754
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
755
("/clients/" + client_object_name))
686
756
DBusObjectWithProperties.__init__(self, self.bus,
687
757
self.dbus_object_path)
758
759
def _get_approvals_pending(self):
760
return self._approvals_pending
761
def _set_approvals_pending(self, value):
762
old_value = self._approvals_pending
763
self._approvals_pending = value
764
bval = bool(value)
765
if (hasattr(self, "dbus_object_path")
766
and bval is not bool(old_value)):
767
dbus_bool = dbus.Boolean(bval, variant_level=1)
768
self.PropertyChanged(dbus.String("ApprovalPending"),
769
dbus_bool)
770
771
approvals_pending = property(_get_approvals_pending,
772
_set_approvals_pending)
773
del _get_approvals_pending, _set_approvals_pending
688
774
689
775
@staticmethod
690
776
def _datetime_to_dbus(dt, variant_level=0):
693
779
variant_level=variant_level)
694
780
695
781
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
782
oldstate = getattr(self, "enabled", False)
697
783
r = Client.enable(self)
698
784
if oldstate != self.enabled:
699
785
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
786
self.PropertyChanged(dbus.String("Enabled"),
701
787
dbus.Boolean(True, variant_level=1))
702
788
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
789
dbus.String("LastEnabled"),
704
790
self._datetime_to_dbus(self.last_enabled,
705
791
variant_level=1))
706
792
return r
707
793
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:
794
def disable(self, quiet = False):
795
oldstate = getattr(self, "enabled", False)
796
r = Client.disable(self, quiet=quiet)
797
if not quiet and oldstate != self.enabled:
712
798
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
799
self.PropertyChanged(dbus.String("Enabled"),
714
800
dbus.Boolean(False, variant_level=1))
715
801
return r
716
802
719
805
self.remove_from_connection()
720
806
except LookupError:
721
807
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
808
if hasattr(DBusObjectWithProperties, "__del__"):
723
809
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
810
Client.__del__(self, *args, **kwargs)
725
811
728
814
self.checker_callback_tag = None
729
815
self.checker = None
730
816
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
817
self.PropertyChanged(dbus.String("CheckerRunning"),
732
818
dbus.Boolean(False, variant_level=1))
733
819
if os.WIFEXITED(condition):
734
820
exitstatus = os.WEXITSTATUS(condition)
746
832
*args, **kwargs)
747
833
748
834
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
835
Client.checked_ok(self, *args, **kwargs)
750
836
# Emit D-Bus signal
751
837
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
838
dbus.String("LastCheckedOK"),
753
839
(self._datetime_to_dbus(self.last_checked_ok,
754
840
variant_level=1)))
841
842
def need_approval(self, *args, **kwargs):
843
r = Client.need_approval(self, *args, **kwargs)
844
# Emit D-Bus signal
845
self.PropertyChanged(
846
dbus.String("LastApprovalRequest"),
847
(self._datetime_to_dbus(self.last_approval_request,
848
variant_level=1)))
755
849
return r
756
850
757
851
def start_checker(self, *args, **kwargs):
767
861
# Emit D-Bus signal
768
862
self.CheckerStarted(self.current_checker_command)
769
863
self.PropertyChanged(
770
dbus.String(u"checker_running"),
864
dbus.String("CheckerRunning"),
771
865
dbus.Boolean(True, variant_level=1))
772
866
return r
773
867
774
868
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
869
old_checker = getattr(self, "checker", None)
776
870
r = Client.stop_checker(self, *args, **kwargs)
777
871
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
872
and getattr(self, "checker", None) is None):
873
self.PropertyChanged(dbus.String("CheckerRunning"),
780
874
dbus.Boolean(False, variant_level=1))
781
875
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()
876
877
def _reset_approved(self):
878
self._approved = None
879
return False
880
881
def approve(self, value=True):
882
self.send_changedstate()
883
self._approved = value
884
gobject.timeout_add(self._timedelta_to_milliseconds
885
(self.approval_duration),
886
self._reset_approved)
887
888
889
## D-Bus methods, signals & properties
890
_interface = "se.bsnet.fukt.Mandos.Client"
891
892
## Signals
790
893
791
894
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
895
@dbus.service.signal(_interface, signature="nxs")
793
896
def CheckerCompleted(self, exitcode, waitstatus, command):
794
897
"D-Bus signal"
795
898
pass
796
899
797
900
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
901
@dbus.service.signal(_interface, signature="s")
799
902
def CheckerStarted(self, command):
800
903
"D-Bus signal"
801
904
pass
802
905
803
906
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
907
@dbus.service.signal(_interface, signature="sv")
805
908
def PropertyChanged(self, property, value):
806
909
"D-Bus signal"
807
910
pass
809
912
# GotSecret - signal
810
913
@dbus.service.signal(_interface)
811
914
def GotSecret(self):
812
"D-Bus signal"
915
"""D-Bus signal
916
Is sent after a successful transfer of secret from the Mandos
917
server to mandos-client
918
"""
813
919
pass
814
920
815
921
# Rejected - signal
816
@dbus.service.signal(_interface)
817
def Rejected(self):
922
@dbus.service.signal(_interface, signature="s")
923
def Rejected(self, reason):
818
924
"D-Bus signal"
819
925
pass
820
926
927
# NeedApproval - signal
928
@dbus.service.signal(_interface, signature="tb")
929
def NeedApproval(self, timeout, default):
930
"D-Bus signal"
931
return self.need_approval()
932
933
## Methods
934
935
# Approve - method
936
@dbus.service.method(_interface, in_signature="b")
937
def Approve(self, value):
938
self.approve(value)
939
940
# CheckedOK - method
941
@dbus.service.method(_interface)
942
def CheckedOK(self):
943
self.checked_ok()
944
821
945
# Enable - method
822
946
@dbus.service.method(_interface)
823
947
def Enable(self):
841
965
def StopChecker(self):
842
966
self.stop_checker()
843
967
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
968
## Properties
969
970
# ApprovalPending - property
971
@dbus_service_property(_interface, signature="b", access="read")
972
def ApprovalPending_dbus_property(self):
973
return dbus.Boolean(bool(self.approvals_pending))
974
975
# ApprovedByDefault - property
976
@dbus_service_property(_interface, signature="b",
977
access="readwrite")
978
def ApprovedByDefault_dbus_property(self, value=None):
979
if value is None: # get
980
return dbus.Boolean(self.approved_by_default)
981
self.approved_by_default = bool(value)
982
# Emit D-Bus signal
983
self.PropertyChanged(dbus.String("ApprovedByDefault"),
984
dbus.Boolean(value, variant_level=1))
985
986
# ApprovalDelay - property
987
@dbus_service_property(_interface, signature="t",
988
access="readwrite")
989
def ApprovalDelay_dbus_property(self, value=None):
990
if value is None: # get
991
return dbus.UInt64(self.approval_delay_milliseconds())
992
self.approval_delay = datetime.timedelta(0, 0, 0, value)
993
# Emit D-Bus signal
994
self.PropertyChanged(dbus.String("ApprovalDelay"),
995
dbus.UInt64(value, variant_level=1))
996
997
# ApprovalDuration - property
998
@dbus_service_property(_interface, signature="t",
999
access="readwrite")
1000
def ApprovalDuration_dbus_property(self, value=None):
1001
if value is None: # get
1002
return dbus.UInt64(self._timedelta_to_milliseconds(
1003
self.approval_duration))
1004
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1005
# Emit D-Bus signal
1006
self.PropertyChanged(dbus.String("ApprovalDuration"),
1007
dbus.UInt64(value, variant_level=1))
1008
1009
# Name - property
1010
@dbus_service_property(_interface, signature="s", access="read")
1011
def Name_dbus_property(self):
847
1012
return dbus.String(self.name)
848
1013
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1014
# Fingerprint - property
1015
@dbus_service_property(_interface, signature="s", access="read")
1016
def Fingerprint_dbus_property(self):
852
1017
return dbus.String(self.fingerprint)
853
1018
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1019
# Host - property
1020
@dbus_service_property(_interface, signature="s",
1021
access="readwrite")
1022
def Host_dbus_property(self, value=None):
858
1023
if value is None: # get
859
1024
return dbus.String(self.host)
860
1025
self.host = value
861
1026
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
1027
self.PropertyChanged(dbus.String("Host"),
863
1028
dbus.String(value, variant_level=1))
864
1029
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
1030
# Created - property
1031
@dbus_service_property(_interface, signature="s", access="read")
1032
def Created_dbus_property(self):
868
1033
return dbus.String(self._datetime_to_dbus(self.created))
869
1034
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
1035
# LastEnabled - property
1036
@dbus_service_property(_interface, signature="s", access="read")
1037
def LastEnabled_dbus_property(self):
873
1038
if self.last_enabled is None:
874
return dbus.String(u"")
1039
return dbus.String("")
875
1040
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
1041
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1042
# Enabled - property
1043
@dbus_service_property(_interface, signature="b",
1044
access="readwrite")
1045
def Enabled_dbus_property(self, value=None):
881
1046
if value is None: # get
882
1047
return dbus.Boolean(self.enabled)
883
1048
if value:
885
1050
else:
886
1051
self.disable()
887
1052
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):
1053
# LastCheckedOK - property
1054
@dbus_service_property(_interface, signature="s",
1055
access="readwrite")
1056
def LastCheckedOK_dbus_property(self, value=None):
892
1057
if value is not None:
893
1058
self.checked_ok()
894
1059
return
895
1060
if self.last_checked_ok is None:
896
return dbus.String(u"")
1061
return dbus.String("")
897
1062
return dbus.String(self._datetime_to_dbus(self
898
1063
.last_checked_ok))
899
1064
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1065
# LastApprovalRequest - property
1066
@dbus_service_property(_interface, signature="s", access="read")
1067
def LastApprovalRequest_dbus_property(self):
1068
if self.last_approval_request is None:
1069
return dbus.String("")
1070
return dbus.String(self.
1071
_datetime_to_dbus(self
1072
.last_approval_request))
1073
1074
# Timeout - property
1075
@dbus_service_property(_interface, signature="t",
1076
access="readwrite")
1077
def Timeout_dbus_property(self, value=None):
904
1078
if value is None: # get
905
1079
return dbus.UInt64(self.timeout_milliseconds())
906
1080
self.timeout = datetime.timedelta(0, 0, 0, value)
907
1081
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
1082
self.PropertyChanged(dbus.String("Timeout"),
909
1083
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
1084
if getattr(self, "disable_initiator_tag", None) is None:
911
1085
return
912
1086
# Reschedule timeout
913
1087
gobject.source_remove(self.disable_initiator_tag)
925
1099
self.disable_initiator_tag = (gobject.timeout_add
926
1100
(time_to_die, self.disable))
927
1101
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1102
# Interval - property
1103
@dbus_service_property(_interface, signature="t",
1104
access="readwrite")
1105
def Interval_dbus_property(self, value=None):
932
1106
if value is None: # get
933
1107
return dbus.UInt64(self.interval_milliseconds())
934
1108
self.interval = datetime.timedelta(0, 0, 0, value)
935
1109
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
1110
self.PropertyChanged(dbus.String("Interval"),
937
1111
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1112
if getattr(self, "checker_initiator_tag", None) is None:
939
1113
return
940
1114
# Reschedule checker run
941
1115
gobject.source_remove(self.checker_initiator_tag)
943
1117
(value, self.start_checker))
944
1118
self.start_checker() # Start one now, too
945
1119
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1120
# Checker - property
1121
@dbus_service_property(_interface, signature="s",
1122
access="readwrite")
1123
def Checker_dbus_property(self, value=None):
950
1124
if value is None: # get
951
1125
return dbus.String(self.checker_command)
952
1126
self.checker_command = value
953
1127
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
1128
self.PropertyChanged(dbus.String("Checker"),
955
1129
dbus.String(self.checker_command,
956
1130
variant_level=1))
957
1131
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):
1132
# CheckerRunning - property
1133
@dbus_service_property(_interface, signature="b",
1134
access="readwrite")
1135
def CheckerRunning_dbus_property(self, value=None):
962
1136
if value is None: # get
963
1137
return dbus.Boolean(self.checker is not None)
964
1138
if value:
966
1140
else:
967
1141
self.stop_checker()
968
1142
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1143
# ObjectPath - property
1144
@dbus_service_property(_interface, signature="o", access="read")
1145
def ObjectPath_dbus_property(self):
972
1146
return self.dbus_object_path # is already a dbus.ObjectPath
973
1147
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):
1148
# Secret = property
1149
@dbus_service_property(_interface, signature="ay",
1150
access="write", byte_arrays=True)
1151
def Secret_dbus_property(self, value):
978
1152
self.secret = str(value)
979
1153
980
1154
del _interface
981
1155
982
1156
1157
class ProxyClient(object):
1158
def __init__(self, child_pipe, fpr, address):
1159
self._pipe = child_pipe
1160
self._pipe.send(('init', fpr, address))
1161
if not self._pipe.recv():
1162
raise KeyError()
1163
1164
def __getattribute__(self, name):
1165
if(name == '_pipe'):
1166
return super(ProxyClient, self).__getattribute__(name)
1167
self._pipe.send(('getattr', name))
1168
data = self._pipe.recv()
1169
if data[0] == 'data':
1170
return data[1]
1171
if data[0] == 'function':
1172
def func(*args, **kwargs):
1173
self._pipe.send(('funcall', name, args, kwargs))
1174
return self._pipe.recv()[1]
1175
return func
1176
1177
def __setattr__(self, name, value):
1178
if(name == '_pipe'):
1179
return super(ProxyClient, self).__setattr__(name, value)
1180
self._pipe.send(('setattr', name, value))
1181
1182
983
1183
class ClientHandler(socketserver.BaseRequestHandler, object):
984
1184
"""A class to handle client connections.
985
1185
987
1187
Note: This will run in its own forked process."""
988
1188
989
1189
def handle(self):
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:
1190
with contextlib.closing(self.server.child_pipe) as child_pipe:
1191
logger.info("TCP connection from: %s",
1192
unicode(self.client_address))
1193
logger.debug("Pipe FD: %d",
1194
self.server.child_pipe.fileno())
1195
995
1196
session = (gnutls.connection
996
1197
.ClientSession(self.request,
997
1198
gnutls.connection
998
1199
.X509Credentials()))
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
1200
1009
1201
# Note: gnutls.connection.X509Credentials is really a
1010
1202
# generic GnuTLS certificate credentials object so long as
1011
1203
# no X.509 keys are added to it. Therefore, we can use it
1012
1204
# here despite using OpenPGP certificates.
1013
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"))
1205
1206
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1207
# "+AES-256-CBC", "+SHA1",
1208
# "+COMP-NULL", "+CTYPE-OPENPGP",
1209
# "+DHE-DSS"))
1018
1210
# Use a fallback default, since this MUST be set.
1019
1211
priority = self.server.gnutls_priority
1020
1212
if priority is None:
1021
priority = u"NORMAL"
1213
priority = "NORMAL"
1022
1214
(gnutls.library.functions
1023
1215
.gnutls_priority_set_direct(session._c_object,
1024
1216
priority, None))
1025
1217
1218
# Start communication using the Mandos protocol
1219
# Get protocol number
1220
line = self.request.makefile().readline()
1221
logger.debug("Protocol version: %r", line)
1222
try:
1223
if int(line.strip().split()[0]) > 1:
1224
raise RuntimeError
1225
except (ValueError, IndexError, RuntimeError) as error:
1226
logger.error("Unknown protocol version: %s", error)
1227
return
1228
1229
# Start GnuTLS connection
1026
1230
try:
1027
1231
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1232
except gnutls.errors.GNUTLSError as error:
1233
logger.warning("Handshake failed: %s", error)
1030
1234
# Do not run session.bye() here: the session is not
1031
1235
# established. Just abandon the request.
1032
1236
return
1033
logger.debug(u"Handshake succeeded")
1237
logger.debug("Handshake succeeded")
1238
1239
approval_required = False
1034
1240
try:
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)
1241
try:
1242
fpr = self.fingerprint(self.peer_certificate
1243
(session))
1244
except (TypeError,
1245
gnutls.errors.GNUTLSError) as error:
1246
logger.warning("Bad certificate: %s", error)
1247
return
1248
logger.debug("Fingerprint: %s", fpr)
1249
1250
try:
1251
client = ProxyClient(child_pipe, fpr,
1252
self.client_address)
1253
except KeyError:
1254
return
1255
1256
if client.approval_delay:
1257
delay = client.approval_delay
1258
client.approvals_pending += 1
1259
approval_required = True
1260
1261
while True:
1262
if not client.enabled:
1263
logger.warning("Client %s is disabled",
1264
client.name)
1265
if self.server.use_dbus:
1266
# Emit D-Bus signal
1267
client.Rejected("Disabled")
1268
return
1269
1270
if client._approved or not client.approval_delay:
1271
#We are approved or approval is disabled
1272
break
1273
elif client._approved is None:
1274
logger.info("Client %s needs approval",
1275
client.name)
1276
if self.server.use_dbus:
1277
# Emit D-Bus signal
1278
client.NeedApproval(
1279
client.approval_delay_milliseconds(),
1280
client.approved_by_default)
1281
else:
1282
logger.warning("Client %s was not approved",
1283
client.name)
1284
if self.server.use_dbus:
1285
# Emit D-Bus signal
1286
client.Rejected("Denied")
1287
return
1288
1289
#wait until timeout or approved
1290
#x = float(client._timedelta_to_milliseconds(delay))
1291
time = datetime.datetime.now()
1292
client.changedstate.acquire()
1293
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1294
client.changedstate.release()
1295
time2 = datetime.datetime.now()
1296
if (time2 - time) >= delay:
1297
if not client.approved_by_default:
1298
logger.warning("Client %s timed out while"
1299
" waiting for approval",
1300
client.name)
1301
if self.server.use_dbus:
1302
# Emit D-Bus signal
1303
client.Rejected("Approval timed out")
1304
return
1305
else:
1306
break
1307
else:
1308
delay -= time2 - time
1309
1310
sent_size = 0
1311
while sent_size < len(client.secret):
1312
try:
1313
sent = session.send(client.secret[sent_size:])
1314
except gnutls.errors.GNUTLSError as error:
1315
logger.warning("gnutls send failed")
1316
return
1317
logger.debug("Sent: %d, remaining: %d",
1318
sent, len(client.secret)
1319
- (sent_size + sent))
1320
sent_size += sent
1321
1322
logger.info("Sending secret to %s", client.name)
1323
# bump the timeout as if seen
1324
client.checked_ok()
1325
if self.server.use_dbus:
1326
# Emit D-Bus signal
1327
client.GotSecret()
1041
1328
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()
1329
finally:
1330
if approval_required:
1331
client.approvals_pending -= 1
1332
try:
1333
session.bye()
1334
except gnutls.errors.GNUTLSError as error:
1335
logger.warning("GnuTLS bye failed")
1067
1336
1068
1337
@staticmethod
1069
1338
def peer_certificate(session):
1079
1348
.gnutls_certificate_get_peers
1080
1349
(session._c_object, ctypes.byref(list_size)))
1081
1350
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1351
raise gnutls.errors.GNUTLSError("error getting peer"
1352
" certificate")
1084
1353
if list_size.value == 0:
1085
1354
return None
1086
1355
cert = cert_list[0]
1112
1381
if crtverify.value != 0:
1113
1382
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
1383
raise (gnutls.errors.CertificateSecurityError
1115
(u"Verify failed"))
1384
("Verify failed"))
1116
1385
# New buffer for the fingerprint
1117
1386
buf = ctypes.create_string_buffer(20)
1118
1387
buf_len = ctypes.c_size_t()
1125
1394
# Convert the buffer to a Python bytestring
1126
1395
fpr = ctypes.string_at(buf, buf_len.value)
1127
1396
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1397
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1129
1398
return hex_fpr
1130
1399
1131
1400
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1401
class MultiprocessingMixIn(object):
1402
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1403
def sub_process_main(self, request, address):
1404
try:
1405
self.finish_request(request, address)
1406
except:
1407
self.handle_error(request, address)
1408
self.close_request(request)
1409
1410
def process_request(self, request, address):
1411
"""Start a new process to process the request."""
1412
multiprocessing.Process(target = self.sub_process_main,
1413
args = (request, address)).start()
1414
1415
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1416
""" adds a pipe to the MixIn """
1134
1417
def process_request(self, request, client_address):
1135
1418
"""Overrides and wraps the original process_request().
1136
1419
1137
1420
This function creates a new pipe in self.pipe
1138
1421
"""
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1422
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1423
1424
super(MultiprocessingMixInWithPipe,
1141
1425
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):
1426
self.child_pipe.close()
1427
self.add_pipe(parent_pipe)
1428
1429
def add_pipe(self, parent_pipe):
1145
1430
"""Dummy function; override as necessary"""
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1431
raise NotImplementedError
1432
1433
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1150
1434
socketserver.TCPServer, object):
1151
1435
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1152
1436
1168
1452
bind to an address or port if they were not specified."""
1169
1453
if self.interface is not None:
1170
1454
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1455
logger.error("SO_BINDTODEVICE does not exist;"
1456
" cannot bind to interface %s",
1173
1457
self.interface)
1174
1458
else:
1175
1459
try:
1176
1460
self.socket.setsockopt(socket.SOL_SOCKET,
1177
1461
SO_BINDTODEVICE,
1178
1462
str(self.interface
1179
+ u'\0'))
1180
except socket.error, error:
1463
+ '\0'))
1464
except socket.error as error:
1181
1465
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1466
logger.error("No permission to"
1467
" bind to interface %s",
1184
1468
self.interface)
1185
1469
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1470
logger.error("SO_BINDTODEVICE not available;"
1471
" cannot bind to interface %s",
1188
1472
self.interface)
1189
1473
else:
1190
1474
raise
1192
1476
if self.server_address[0] or self.server_address[1]:
1193
1477
if not self.server_address[0]:
1194
1478
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
1479
any_address = "::" # in6addr_any
1196
1480
else:
1197
1481
any_address = socket.INADDR_ANY
1198
1482
self.server_address = (any_address,
1237
1521
return socketserver.TCPServer.server_activate(self)
1238
1522
def enable(self):
1239
1523
self.enabled = True
1240
def add_pipe(self, pipe):
1524
def add_pipe(self, parent_pipe):
1241
1525
# Call "handle_ipc" for both data and EOF events
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={}):
1526
gobject.io_add_watch(parent_pipe.fileno(),
1527
gobject.IO_IN | gobject.IO_HUP,
1528
functools.partial(self.handle_ipc,
1529
parent_pipe = parent_pipe))
1530
1531
def handle_ipc(self, source, condition, parent_pipe=None,
1532
client_object=None):
1245
1533
condition_names = {
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1534
gobject.IO_IN: "IN", # There is data to read.
1535
gobject.IO_OUT: "OUT", # Data can be written (without
1248
1536
# blocking).
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
1537
gobject.IO_PRI: "PRI", # There is urgent data to read.
1538
gobject.IO_ERR: "ERR", # Error condition.
1539
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1252
1540
# broken, usually for pipes and
1253
1541
# sockets).
1254
1542
}
1256
1544
for cond, name in
1257
1545
condition_names.iteritems()
1258
1546
if cond & condition)
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
1547
# error or the other end of multiprocessing.Pipe has closed
1548
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1549
return False
1550
1551
# Read a request from the child
1552
request = parent_pipe.recv()
1553
command = request[0]
1554
1555
if command == 'init':
1556
fpr = request[1]
1557
address = request[2]
1558
1559
for c in self.clients:
1560
if c.fingerprint == fpr:
1561
client = c
1562
break
1563
else:
1564
logger.warning("Client not found for fingerprint: %s, ad"
1565
"dress: %s", fpr, address)
1566
if self.use_dbus:
1567
# Emit D-Bus signal
1568
mandos_dbus_service.ClientNotFound(fpr, address[0])
1569
parent_pipe.send(False)
1570
return False
1571
1572
gobject.io_add_watch(parent_pipe.fileno(),
1573
gobject.IO_IN | gobject.IO_HUP,
1574
functools.partial(self.handle_ipc,
1575
parent_pipe = parent_pipe,
1576
client_object = client))
1577
parent_pipe.send(True)
1578
# remove the old hook in favor of the new above hook on same fileno
1579
return False
1580
if command == 'funcall':
1581
funcname = request[1]
1582
args = request[2]
1583
kwargs = request[3]
1584
1585
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1586
1587
if command == 'getattr':
1588
attrname = request[1]
1589
if callable(client_object.__getattribute__(attrname)):
1590
parent_pipe.send(('function',))
1591
else:
1592
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1593
1594
if command == 'setattr':
1595
attrname = request[1]
1596
value = request[2]
1597
setattr(client_object, attrname, value)
1598
1313
1599
return True
1314
1600
1315
1601
1316
1602
def string_to_delta(interval):
1317
1603
"""Parse a string and return a datetime.timedelta
1318
1604
1319
>>> string_to_delta(u'7d')
1605
>>> string_to_delta('7d')
1320
1606
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
1607
>>> string_to_delta('60s')
1322
1608
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
1609
>>> string_to_delta('60m')
1324
1610
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
1611
>>> string_to_delta('24h')
1326
1612
datetime.timedelta(1)
1327
>>> string_to_delta(u'1w')
1613
>>> string_to_delta('1w')
1328
1614
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
1615
>>> string_to_delta('5m 30s')
1330
1616
datetime.timedelta(0, 330)
1331
1617
"""
1332
1618
timevalue = datetime.timedelta(0)
1334
1620
try:
1335
1621
suffix = unicode(s[-1])
1336
1622
value = int(s[:-1])
1337
if suffix == u"d":
1623
if suffix == "d":
1338
1624
delta = datetime.timedelta(value)
1339
elif suffix == u"s":
1625
elif suffix == "s":
1340
1626
delta = datetime.timedelta(0, value)
1341
elif suffix == u"m":
1627
elif suffix == "m":
1342
1628
delta = datetime.timedelta(0, 0, 0, 0, value)
1343
elif suffix == u"h":
1629
elif suffix == "h":
1344
1630
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1345
elif suffix == u"w":
1631
elif suffix == "w":
1346
1632
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1347
1633
else:
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
1634
raise ValueError("Unknown suffix %r" % suffix)
1635
except (ValueError, IndexError) as e:
1636
raise ValueError(*(e.args))
1351
1637
timevalue += delta
1352
1638
return timevalue
1353
1639
1359
1645
global if_nametoindex
1360
1646
try:
1361
1647
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1648
(ctypes.util.find_library("c"))
1363
1649
.if_nametoindex)
1364
1650
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1651
logger.warning("Doing if_nametoindex the hard way")
1366
1652
def if_nametoindex(interface):
1367
1653
"Get an interface index the hard way, i.e. using fcntl()"
1368
1654
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1655
with contextlib.closing(socket.socket()) as s:
1370
1656
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1657
struct.pack(str("16s16x"),
1372
1658
interface))
1373
interface_index = struct.unpack(str(u"I"),
1659
interface_index = struct.unpack(str("I"),
1374
1660
ifreq[16:20])[0]
1375
1661
return interface_index
1376
1662
return if_nametoindex(interface)
1384
1670
sys.exit()
1385
1671
os.setsid()
1386
1672
if not nochdir:
1387
os.chdir(u"/")
1673
os.chdir("/")
1388
1674
if os.fork():
1389
1675
sys.exit()
1390
1676
if not noclose:
1392
1678
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1393
1679
if not stat.S_ISCHR(os.fstat(null).st_mode):
1394
1680
raise OSError(errno.ENODEV,
1395
u"%s not a character device"
1681
"%s not a character device"
1396
1682
% os.path.devnull)
1397
1683
os.dup2(null, sys.stdin.fileno())
1398
1684
os.dup2(null, sys.stdout.fileno())
1406
1692
##################################################################
1407
1693
# Parsing of options, both command line and config file
1408
1694
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]
1695
parser = argparse.ArgumentParser()
1696
parser.add_argument("-v", "--version", action="version",
1697
version = "%%(prog)s %s" % version,
1698
help="show version number and exit")
1699
parser.add_argument("-i", "--interface", metavar="IF",
1700
help="Bind to interface IF")
1701
parser.add_argument("-a", "--address",
1702
help="Address to listen for requests on")
1703
parser.add_argument("-p", "--port", type=int,
1704
help="Port number to receive requests on")
1705
parser.add_argument("--check", action="store_true",
1706
help="Run self-test")
1707
parser.add_argument("--debug", action="store_true",
1708
help="Debug mode; run in foreground and log"
1709
" to terminal")
1710
parser.add_argument("--debuglevel", metavar="LEVEL",
1711
help="Debug level for stdout output")
1712
parser.add_argument("--priority", help="GnuTLS"
1713
" priority string (see GnuTLS documentation)")
1714
parser.add_argument("--servicename",
1715
metavar="NAME", help="Zeroconf service name")
1716
parser.add_argument("--configdir",
1717
default="/etc/mandos", metavar="DIR",
1718
help="Directory to search for configuration"
1719
" files")
1720
parser.add_argument("--no-dbus", action="store_false",
1721
dest="use_dbus", help="Do not provide D-Bus"
1722
" system bus interface")
1723
parser.add_argument("--no-ipv6", action="store_false",
1724
dest="use_ipv6", help="Do not use IPv6")
1725
options = parser.parse_args()
1435
1726
1436
1727
if options.check:
1437
1728
import doctest
1439
1730
sys.exit()
1440
1731
1441
1732
# Default values for config file for server-global settings
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",
1733
server_defaults = { "interface": "",
1734
"address": "",
1735
"port": "",
1736
"debug": "False",
1737
"priority":
1738
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1739
"servicename": "Mandos",
1740
"use_dbus": "True",
1741
"use_ipv6": "True",
1742
"debuglevel": "",
1451
1743
}
1452
1744
1453
1745
# Parse config file for server-global settings
1454
1746
server_config = configparser.SafeConfigParser(server_defaults)
1455
1747
del server_defaults
1456
1748
server_config.read(os.path.join(options.configdir,
1457
u"mandos.conf"))
1749
"mandos.conf"))
1458
1750
# Convert the SafeConfigParser object to a dict
1459
1751
server_settings = server_config.defaults()
1460
1752
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
1753
for option in ("debug", "use_dbus", "use_ipv6"):
1754
server_settings[option] = server_config.getboolean("DEFAULT",
1463
1755
option)
1464
1756
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
1757
server_settings["port"] = server_config.getint("DEFAULT",
1758
"port")
1467
1759
del server_config
1468
1760
1469
1761
# Override the settings from the config file with command line
1470
1762
# options, if set.
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"):
1763
for option in ("interface", "address", "port", "debug",
1764
"priority", "servicename", "configdir",
1765
"use_dbus", "use_ipv6", "debuglevel"):
1474
1766
value = getattr(options, option)
1475
1767
if value is not None:
1476
1768
server_settings[option] = value
1484
1776
##################################################################
1485
1777
1486
1778
# For convenience
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":
1779
debug = server_settings["debug"]
1780
debuglevel = server_settings["debuglevel"]
1781
use_dbus = server_settings["use_dbus"]
1782
use_ipv6 = server_settings["use_ipv6"]
1783
1784
if server_settings["servicename"] != "Mandos":
1496
1785
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
1786
('Mandos (%s) [%%(process)d]:'
1787
' %%(levelname)s: %%(message)s'
1788
% server_settings["servicename"]))
1500
1789
1501
1790
# Parse config file with clients
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1791
client_defaults = { "timeout": "1h",
1792
"interval": "5m",
1793
"checker": "fping -q -- %%(host)s",
1794
"host": "",
1795
"approval_delay": "0s",
1796
"approval_duration": "1s",
1506
1797
}
1507
1798
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
1799
client_config.read(os.path.join(server_settings["configdir"],
1800
"clients.conf"))
1510
1801
1511
1802
global mandos_dbus_service
1512
1803
mandos_dbus_service = None
1513
1804
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
1805
tcp_server = MandosServer((server_settings["address"],
1806
server_settings["port"]),
1516
1807
ClientHandler,
1517
interface=server_settings[u"interface"],
1808
interface=(server_settings["interface"]
1809
or None),
1518
1810
use_ipv6=use_ipv6,
1519
1811
gnutls_priority=
1520
server_settings[u"priority"],
1812
server_settings["priority"],
1521
1813
use_dbus=use_dbus)
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)
1814
if not debug:
1815
pidfilename = "/var/run/mandos.pid"
1816
try:
1817
pidfile = open(pidfilename, "w")
1818
except IOError:
1819
logger.error("Could not open file %r", pidfilename)
1527
1820
1528
1821
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
1822
uid = pwd.getpwnam("_mandos").pw_uid
1823
gid = pwd.getpwnam("_mandos").pw_gid
1531
1824
except KeyError:
1532
1825
try:
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
1826
uid = pwd.getpwnam("mandos").pw_uid
1827
gid = pwd.getpwnam("mandos").pw_gid
1535
1828
except KeyError:
1536
1829
try:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1830
uid = pwd.getpwnam("nobody").pw_uid
1831
gid = pwd.getpwnam("nobody").pw_gid
1539
1832
except KeyError:
1540
1833
uid = 65534
1541
1834
gid = 65534
1542
1835
try:
1543
1836
os.setgid(gid)
1544
1837
os.setuid(uid)
1545
except OSError, error:
1838
except OSError as error:
1546
1839
if error[0] != errno.EPERM:
1547
1840
raise error
1548
1841
1549
# Enable all possible GnuTLS debugging
1842
if not debug and not debuglevel:
1843
syslogger.setLevel(logging.WARNING)
1844
console.setLevel(logging.WARNING)
1845
if debuglevel:
1846
level = getattr(logging, debuglevel.upper())
1847
syslogger.setLevel(level)
1848
console.setLevel(level)
1849
1550
1850
if debug:
1851
# Enable all possible GnuTLS debugging
1852
1551
1853
# "Use a log level over 10 to enable all debugging options."
1552
1854
# - GnuTLS manual
1553
1855
gnutls.library.functions.gnutls_global_set_log_level(11)
1554
1856
1555
1857
@gnutls.library.types.gnutls_log_func
1556
1858
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
1859
logger.debug("GnuTLS: %s", string[:-1])
1558
1860
1559
1861
(gnutls.library.functions
1560
1862
.gnutls_global_set_log_function(debug_gnutls))
1863
1864
# Redirect stdin so all checkers get /dev/null
1865
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1866
os.dup2(null, sys.stdin.fileno())
1867
if null > 2:
1868
os.close(null)
1869
else:
1870
# No console logging
1871
logger.removeHandler(console)
1872
1873
# Need to fork before connecting to D-Bus
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1561
1877
1562
1878
global main_loop
1563
1879
# From the Avahi example code
1566
1882
bus = dbus.SystemBus()
1567
1883
# End of Avahi example code
1568
1884
if use_dbus:
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1885
try:
1886
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1887
bus, do_not_queue=True)
1888
except dbus.exceptions.NameExistsException as e:
1889
logger.error(unicode(e) + ", disabling D-Bus")
1890
use_dbus = False
1891
server_settings["use_dbus"] = False
1892
tcp_server.use_dbus = False
1570
1893
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1894
service = AvahiService(name = server_settings["servicename"],
1895
servicetype = "_mandos._tcp",
1573
1896
protocol = protocol, bus = bus)
1574
1897
if server_settings["interface"]:
1575
1898
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
1899
(str(server_settings["interface"])))
1900
1901
global multiprocessing_manager
1902
multiprocessing_manager = multiprocessing.Manager()
1577
1903
1578
1904
client_class = Client
1579
1905
if use_dbus:
1580
1906
client_class = functools.partial(ClientDBus, bus = bus)
1907
def client_config_items(config, section):
1908
special_settings = {
1909
"approved_by_default":
1910
lambda: config.getboolean(section,
1911
"approved_by_default"),
1912
}
1913
for name, value in config.items(section):
1914
try:
1915
yield (name, special_settings[name]())
1916
except KeyError:
1917
yield (name, value)
1918
1581
1919
tcp_server.clients.update(set(
1582
1920
client_class(name = section,
1583
config= dict(client_config.items(section)))
1921
config= dict(client_config_items(
1922
client_config, section)))
1584
1923
for section in client_config.sections()))
1585
1924
if not tcp_server.clients:
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()
1925
logger.warning("No clients defined")
1616
1926
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
1623
1624
1927
if not debug:
1928
try:
1929
with pidfile:
1930
pid = os.getpid()
1931
pidfile.write(str(pid) + "\n".encode("utf-8"))
1932
del pidfile
1933
except IOError:
1934
logger.error("Could not write to file %r with PID %d",
1935
pidfilename, pid)
1936
except NameError:
1937
# "pidfile" was never created
1938
pass
1939
del pidfilename
1940
1625
1941
signal.signal(signal.SIGINT, signal.SIG_IGN)
1942
1626
1943
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1627
1944
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1628
1945
1630
1947
class MandosDBusService(dbus.service.Object):
1631
1948
"""A D-Bus proxy object"""
1632
1949
def __init__(self):
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")
1950
dbus.service.Object.__init__(self, bus, "/")
1951
_interface = "se.bsnet.fukt.Mandos"
1952
1953
@dbus.service.signal(_interface, signature="o")
1954
def ClientAdded(self, objpath):
1955
"D-Bus signal"
1956
pass
1957
1958
@dbus.service.signal(_interface, signature="ss")
1959
def ClientNotFound(self, fingerprint, address):
1960
"D-Bus signal"
1961
pass
1962
1963
@dbus.service.signal(_interface, signature="os")
1647
1964
def ClientRemoved(self, objpath, name):
1648
1965
"D-Bus signal"
1649
1966
pass
1650
1967
1651
@dbus.service.method(_interface, out_signature=u"ao")
1968
@dbus.service.method(_interface, out_signature="ao")
1652
1969
def GetAllClients(self):
1653
1970
"D-Bus method"
1654
1971
return dbus.Array(c.dbus_object_path
1655
1972
for c in tcp_server.clients)
1656
1973
1657
1974
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
1975
out_signature="a{oa{sv}}")
1659
1976
def GetAllClientsWithProperties(self):
1660
1977
"D-Bus method"
1661
1978
return dbus.Dictionary(
1662
((c.dbus_object_path, c.GetAll(u""))
1979
((c.dbus_object_path, c.GetAll(""))
1663
1980
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
1981
signature="oa{sv}")
1665
1982
1666
@dbus.service.method(_interface, in_signature=u"o")
1983
@dbus.service.method(_interface, in_signature="o")
1667
1984
def RemoveClient(self, object_path):
1668
1985
"D-Bus method"
1669
1986
for c in tcp_server.clients:
1671
1988
tcp_server.clients.remove(c)
1672
1989
c.remove_from_connection()
1673
1990
# Don't signal anything except ClientRemoved
1674
c.disable(signal=False)
1991
c.disable(quiet=True)
1675
1992
# Emit D-Bus signal
1676
1993
self.ClientRemoved(object_path, c.name)
1677
1994
return
1678
raise KeyError
1995
raise KeyError(object_path)
1679
1996
1680
1997
del _interface
1681
1998
1682
1999
mandos_dbus_service = MandosDBusService()
1683
2000
2001
def cleanup():
2002
"Cleanup function; run on exit"
2003
service.cleanup()
2004
2005
while tcp_server.clients:
2006
client = tcp_server.clients.pop()
2007
if use_dbus:
2008
client.remove_from_connection()
2009
client.disable_hook = None
2010
# Don't signal anything except ClientRemoved
2011
client.disable(quiet=True)
2012
if use_dbus:
2013
# Emit D-Bus signal
2014
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2015
client.name)
2016
2017
atexit.register(cleanup)
2018
1684
2019
for client in tcp_server.clients:
1685
2020
if use_dbus:
1686
2021
# Emit D-Bus signal
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
2022
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1689
2023
client.enable()
1690
2024
1691
2025
tcp_server.enable()
1694
2028
# Find out what port we got
1695
2029
service.port = tcp_server.socket.getsockname()[1]
1696
2030
if use_ipv6:
1697
logger.info(u"Now listening on address %r, port %d,"
2031
logger.info("Now listening on address %r, port %d,"
1698
2032
" flowinfo %d, scope_id %d"
1699
2033
% tcp_server.socket.getsockname())
1700
2034
else: # IPv4
1701
logger.info(u"Now listening on address %r, port %d"
2035
logger.info("Now listening on address %r, port %d"
1702
2036
% tcp_server.socket.getsockname())
1703
2037
1704
2038
#service.interface = tcp_server.socket.getsockname()[3]
1707
2041
# From the Avahi example code
1708
2042
try:
1709
2043
service.activate()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2044
except dbus.exceptions.DBusException as error:
2045
logger.critical("DBusException: %s", error)
2046
cleanup()
1712
2047
sys.exit(1)
1713
2048
# End of Avahi example code
1714
2049
1717
2052
(tcp_server.handle_request
1718
2053
(*args[2:], **kwargs) or True))
1719
2054
1720
logger.debug(u"Starting main loop")
2055
logger.debug("Starting main loop")
1721
2056
main_loop.run()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2057
except AvahiError as error:
2058
logger.critical("AvahiError: %s", error)
2059
cleanup()
1724
2060
sys.exit(1)
1725
2061
except KeyboardInterrupt:
1726
2062
if debug:
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
2063
print("", file=sys.stderr)
2064
logger.debug("Server received KeyboardInterrupt")
2065
logger.debug("Server exiting")
2066
# Must run before the D-Bus bus name gets deregistered
2067
cleanup()
1730
2068
1731
2069
if __name__ == '__main__':
1732
2070
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0