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- Committer: Teddy Hogeborn
- Date: 2009-04-16 10:41:41 UTC
- Revision ID: teddy@fukt.bsnet.se-20090416104141-19m1kqbwr5v1q416
Code cleanup.
* mandos: Move some global stuff into classes.
(server, group): Moved into "AvahiService". All users changed.
(AvahiService.group, AvahiService.server): New attributes.
(entry_group_state_changed, server_state_changed): Moved into
"AvahiService".
All callers
changed.
(AvahiService.cleanup, AvahiService.activate): New.
(_datetime_to_dbus): Moved into "ClientDBus". All callers changed.
(ClientDBus._datetime_to_dbus): New.
* mandos: Move some global stuff into classes.
(server, group): Moved into "AvahiService". All users changed.
(AvahiService.group, AvahiService.server): New attributes.
(entry_group_state_changed, server_state_changed): Moved into
"AvahiService".
All callers
changed.
(AvahiService.cleanup, AvahiService.activate): New.
(_datetime_to_dbus): Moved into "ClientDBus". All callers changed.
(ClientDBus._datetime_to_dbus): New.
- files removed:
- 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 © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
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# This program is free software: you can redistribute it and/or modify
18
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# it under the terms of the GNU General Public License as published by
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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
56
55
import logging
57
56
import logging.handlers
58
57
import pwd
59
import contextlib
58
from contextlib import closing
60
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import struct
61
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import fcntl
62
import functools
63
import cPickle as pickle
64
import multiprocessing
65
61
66
62
import dbus
67
63
import dbus.service
70
66
from dbus.mainloop.glib import DBusGMainLoop
71
67
import ctypes
72
68
import ctypes.util
73
import xml.dom.minidom
74
import inspect
75
69
76
70
try:
77
71
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
73
try:
80
74
from IN import SO_BINDTODEVICE
81
75
except ImportError:
82
SO_BINDTODEVICE = None
83
84
85
version = "1.2.3"
86
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#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
76
# From /usr/include/asm/socket.h
77
SO_BINDTODEVICE = 25
78
79
80
version = "1.0.8"
81
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logger = logging.Logger(u'mandos')
89
83
syslogger = (logging.handlers.SysLogHandler
90
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
85
address = "/dev/log"))
92
86
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
95
89
logger.addHandler(syslogger)
96
90
97
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console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
101
95
logger.addHandler(console)
102
96
103
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class AvahiError(Exception):
120
114
Attributes:
121
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interface: integer; avahi.IF_UNSPEC or an interface index.
122
116
Used to optionally bind to the specified interface.
123
name: string; Example: 'Mandos'
124
type: string; Example: '_mandos._tcp'.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
125
119
See <http://www.dns-sd.org/ServiceTypes.html>
126
120
port: integer; what port to announce
127
121
TXT: list of strings; TXT record for the service
132
126
a sensible number of times
133
127
group: D-Bus Entry Group
134
128
server: D-Bus Server
135
bus: dbus.SystemBus()
136
129
"""
137
130
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
131
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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domain = u"", host = u"", max_renames = 32768,
133
protocol = avahi.PROTO_UNSPEC):
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self.interface = interface
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135
self.name = name
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136
self.type = servicetype
150
143
self.protocol = protocol
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self.group = None # our entry group
152
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self.server = None
153
self.bus = bus
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146
def rename(self):
155
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"""Derived from the Avahi example code"""
156
148
if self.rename_count >= self.max_renames:
157
logger.critical("No suitable Zeroconf service name found"
158
" after %i retries, exiting.",
149
logger.critical(u"No suitable Zeroconf service name found"
150
u" after %i retries, exiting.",
159
151
self.rename_count)
160
raise AvahiServiceError("Too many renames")
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
162
logger.info("Changing Zeroconf service name to %r ...",
163
self.name)
152
raise AvahiServiceError(u"Too many renames")
153
self.name = self.server.GetAlternativeServiceName(self.name)
154
logger.info(u"Changing Zeroconf service name to %r ...",
155
unicode(self.name))
164
156
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
157
(u'Mandos (%s) [%%(process)d]:'
158
u' %%(levelname)s: %%(message)s'
167
159
% self.name))
168
160
self.remove()
169
try:
170
self.add()
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
161
self.add()
175
162
self.rename_count += 1
176
163
def remove(self):
177
164
"""Derived from the Avahi example code"""
181
168
"""Derived from the Avahi example code"""
182
169
if self.group is None:
183
170
self.group = dbus.Interface(
184
self.bus.get_object(avahi.DBUS_NAME,
185
self.server.EntryGroupNew()),
171
bus.get_object(avahi.DBUS_NAME,
172
self.server.EntryGroupNew()),
186
173
avahi.DBUS_INTERFACE_ENTRY_GROUP)
187
174
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
175
self.entry_group_state_changed)
176
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
191
177
self.name, self.type)
192
178
self.group.AddService(
193
179
self.interface,
200
186
self.group.Commit()
201
187
def entry_group_state_changed(self, state, error):
202
188
"""Derived from the Avahi example code"""
203
logger.debug("Avahi entry group state change: %i", state)
189
logger.debug(u"Avahi state change: %i", state)
204
190
205
191
if state == avahi.ENTRY_GROUP_ESTABLISHED:
206
logger.debug("Zeroconf service established.")
192
logger.debug(u"Zeroconf service established.")
207
193
elif state == avahi.ENTRY_GROUP_COLLISION:
208
logger.info("Zeroconf service name collision.")
194
logger.warning(u"Zeroconf service name collision.")
209
195
self.rename()
210
196
elif state == avahi.ENTRY_GROUP_FAILURE:
211
logger.critical("Avahi: Error in group state changed %s",
197
logger.critical(u"Avahi: Error in group state changed %s",
212
198
unicode(error))
213
raise AvahiGroupError("State changed: %s"
199
raise AvahiGroupError(u"State changed: %s"
214
200
% unicode(error))
215
201
def cleanup(self):
216
202
"""Derived from the Avahi example code"""
219
205
self.group = None
220
206
def server_state_changed(self, state):
221
207
"""Derived from the Avahi example code"""
222
logger.debug("Avahi server state change: %i", state)
223
208
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
209
logger.error(u"Zeroconf server name collision")
225
210
self.remove()
226
211
elif state == avahi.SERVER_RUNNING:
227
212
self.add()
229
214
"""Derived from the Avahi example code"""
230
215
if self.server is None:
231
216
self.server = dbus.Interface(
232
self.bus.get_object(avahi.DBUS_NAME,
233
avahi.DBUS_PATH_SERVER),
217
bus.get_object(avahi.DBUS_NAME,
218
avahi.DBUS_PATH_SERVER),
234
219
avahi.DBUS_INTERFACE_SERVER)
235
self.server.connect_to_signal("StateChanged",
220
self.server.connect_to_signal(u"StateChanged",
236
221
self.server_state_changed)
237
222
self.server_state_changed(self.server.GetState())
238
223
241
226
"""A representation of a client host served by this server.
242
227
243
228
Attributes:
244
_approved: bool(); 'None' if not yet approved/disapproved
245
approval_delay: datetime.timedelta(); Time to wait for approval
246
approval_duration: datetime.timedelta(); Duration of one approval
229
name: string; from the config file, used in log messages and
230
D-Bus identifiers
231
fingerprint: string (40 or 32 hexadecimal digits); used to
232
uniquely identify the client
233
secret: bytestring; sent verbatim (over TLS) to client
234
host: string; available for use by the checker command
235
created: datetime.datetime(); (UTC) object creation
236
last_enabled: datetime.datetime(); (UTC)
237
enabled: bool()
238
last_checked_ok: datetime.datetime(); (UTC) or None
239
timeout: datetime.timedelta(); How long from last_checked_ok
240
until this client is invalid
241
interval: datetime.timedelta(); How often to start a new checker
242
disable_hook: If set, called by disable() as disable_hook(self)
247
243
checker: subprocess.Popen(); a running checker process used
248
244
to see if the client lives.
249
245
'None' if no process is running.
250
checker_callback_tag: a gobject event source tag, or None
251
checker_command: string; External command which is run to check
252
if client lives. %() expansions are done at
246
checker_initiator_tag: a gobject event source tag, or None
247
disable_initiator_tag: - '' -
248
checker_callback_tag: - '' -
249
checker_command: string; External command which is run to check if
250
client lives. %() expansions are done at
253
251
runtime with vars(self) as dict, so that for
254
252
instance %(name)s can be used in the command.
255
checker_initiator_tag: a gobject event source tag, or None
256
created: datetime.datetime(); (UTC) object creation
257
253
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
260
enabled: bool()
261
fingerprint: string (40 or 32 hexadecimal digits); used to
262
uniquely identify the client
263
host: string; available for use by the checker command
264
interval: datetime.timedelta(); How often to start a new checker
265
last_approval_request: datetime.datetime(); (UTC) or None
266
last_checked_ok: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
268
name: string; from the config file, used in log messages and
269
D-Bus identifiers
270
secret: bytestring; sent verbatim (over TLS) to client
271
timeout: datetime.timedelta(); How long from last_checked_ok
272
until this client is disabled
273
runtime_expansions: Allowed attributes for runtime expansion.
274
254
"""
275
255
276
runtime_expansions = ("approval_delay", "approval_duration",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
279
"last_enabled", "name", "timeout")
280
281
256
@staticmethod
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
257
def _datetime_to_milliseconds(dt):
258
"Convert a datetime.datetime() to milliseconds"
259
return ((dt.days * 24 * 60 * 60 * 1000)
260
+ (dt.seconds * 1000)
261
+ (dt.microseconds // 1000))
287
262
288
263
def timeout_milliseconds(self):
289
264
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
265
return self._datetime_to_milliseconds(self.timeout)
291
266
292
267
def interval_milliseconds(self):
293
268
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
269
return self._datetime_to_milliseconds(self.interval)
298
270
299
271
def __init__(self, name = None, disable_hook=None, config=None):
300
272
"""Note: the 'checker' key in 'config' sets the
303
275
self.name = name
304
276
if config is None:
305
277
config = {}
306
logger.debug("Creating client %r", self.name)
278
logger.debug(u"Creating client %r", self.name)
307
279
# Uppercase and remove spaces from fingerprint for later
308
280
# comparison purposes with return value from the fingerprint()
309
281
# function
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
312
logger.debug(" Fingerprint: %s", self.fingerprint)
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
282
self.fingerprint = (config[u"fingerprint"].upper()
283
.replace(u" ", u""))
284
logger.debug(u" Fingerprint: %s", self.fingerprint)
285
if u"secret" in config:
286
self.secret = config[u"secret"].decode(u"base64")
287
elif u"secfile" in config:
288
with closing(open(os.path.expanduser
289
(os.path.expandvars
290
(config[u"secfile"])))) as secfile:
319
291
self.secret = secfile.read()
320
292
else:
321
raise TypeError("No secret or secfile for client %s"
293
raise TypeError(u"No secret or secfile for client %s"
322
294
% self.name)
323
self.host = config.get("host", "")
295
self.host = config.get(u"host", u"")
324
296
self.created = datetime.datetime.utcnow()
325
297
self.enabled = False
326
self.last_approval_request = None
327
298
self.last_enabled = None
328
299
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
300
self.timeout = string_to_delta(config[u"timeout"])
301
self.interval = string_to_delta(config[u"interval"])
331
302
self.disable_hook = disable_hook
332
303
self.checker = None
333
304
self.checker_initiator_tag = None
334
305
self.disable_initiator_tag = None
335
306
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
307
self.checker_command = config[u"checker"]
337
308
self.current_checker_command = None
338
309
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
342
self.approvals_pending = 0
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
348
310
349
def send_changedstate(self):
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
354
311
def enable(self):
355
312
"""Start this client's checker and timeout hooks"""
356
if getattr(self, "enabled", False):
357
# Already enabled
358
return
359
self.send_changedstate()
360
313
self.last_enabled = datetime.datetime.utcnow()
361
314
# Schedule a new checker to be started an 'interval' from now,
362
315
# and every interval from then on.
363
316
self.checker_initiator_tag = (gobject.timeout_add
364
317
(self.interval_milliseconds(),
365
318
self.start_checker))
319
# Also start a new checker *right now*.
320
self.start_checker()
366
321
# Schedule a disable() when 'timeout' has passed
367
322
self.disable_initiator_tag = (gobject.timeout_add
368
323
(self.timeout_milliseconds(),
369
324
self.disable))
370
325
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
373
326
374
def disable(self, quiet=True):
327
def disable(self):
375
328
"""Disable this client."""
376
329
if not getattr(self, "enabled", False):
377
330
return False
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
381
logger.info("Disabling client %s", self.name)
382
if getattr(self, "disable_initiator_tag", False):
331
logger.info(u"Disabling client %s", self.name)
332
if getattr(self, u"disable_initiator_tag", False):
383
333
gobject.source_remove(self.disable_initiator_tag)
384
334
self.disable_initiator_tag = None
385
if getattr(self, "checker_initiator_tag", False):
335
if getattr(self, u"checker_initiator_tag", False):
386
336
gobject.source_remove(self.checker_initiator_tag)
387
337
self.checker_initiator_tag = None
388
338
self.stop_checker()
403
353
if os.WIFEXITED(condition):
404
354
exitstatus = os.WEXITSTATUS(condition)
405
355
if exitstatus == 0:
406
logger.info("Checker for %(name)s succeeded",
356
logger.info(u"Checker for %(name)s succeeded",
407
357
vars(self))
408
358
self.checked_ok()
409
359
else:
410
logger.info("Checker for %(name)s failed",
360
logger.info(u"Checker for %(name)s failed",
411
361
vars(self))
412
362
else:
413
logger.warning("Checker for %(name)s crashed?",
363
logger.warning(u"Checker for %(name)s crashed?",
414
364
vars(self))
415
365
416
366
def checked_ok(self):
425
375
(self.timeout_milliseconds(),
426
376
self.disable))
427
377
428
def need_approval(self):
429
self.last_approval_request = datetime.datetime.utcnow()
430
431
378
def start_checker(self):
432
379
"""Start a new checker subprocess if one is not running.
433
380
439
386
# client would inevitably timeout, since no checker would get
440
387
# a chance to run to completion. If we instead leave running
441
388
# checkers alone, the checker would have to take more time
442
# than 'timeout' for the client to be disabled, which is as it
443
# should be.
389
# than 'timeout' for the client to be declared invalid, which
390
# is as it should be.
444
391
445
392
# If a checker exists, make sure it is not a zombie
446
try:
393
if self.checker is not None:
447
394
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
395
if pid:
454
logger.warning("Checker was a zombie")
396
logger.warning(u"Checker was a zombie")
455
397
gobject.source_remove(self.checker_callback_tag)
456
398
self.checker_callback(pid, status,
457
399
self.current_checker_command)
462
404
command = self.checker_command % self.host
463
405
except TypeError:
464
406
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
407
escaped_attrs = dict((key,
408
re.escape(unicode(str(val),
409
errors=
410
u'replace')))
411
for key, val in
412
vars(self).iteritems())
473
413
try:
474
414
command = self.checker_command % escaped_attrs
475
415
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
416
logger.error(u'Could not format string "%s":'
417
u' %s', self.checker_command, error)
478
418
return True # Try again later
479
419
self.current_checker_command = command
480
420
try:
481
logger.info("Starting checker %r for %s",
421
logger.info(u"Starting checker %r for %s",
482
422
command, self.name)
483
423
# We don't need to redirect stdout and stderr, since
484
424
# in normal mode, that is already done by daemon(),
486
426
# always replaced by /dev/null.)
487
427
self.checker = subprocess.Popen(command,
488
428
close_fds=True,
489
shell=True, cwd="/")
429
shell=True, cwd=u"/")
490
430
self.checker_callback_tag = (gobject.child_watch_add
491
431
(self.checker.pid,
492
432
self.checker_callback,
498
438
gobject.source_remove(self.checker_callback_tag)
499
439
self.checker_callback(pid, status, command)
500
440
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
441
logger.error(u"Failed to start subprocess: %s",
502
442
error)
503
443
# Re-run this periodically if run by gobject.timeout_add
504
444
return True
508
448
if self.checker_callback_tag:
509
449
gobject.source_remove(self.checker_callback_tag)
510
450
self.checker_callback_tag = None
511
if getattr(self, "checker", None) is None:
451
if getattr(self, u"checker", None) is None:
512
452
return
513
logger.debug("Stopping checker for %(name)s", vars(self))
453
logger.debug(u"Stopping checker for %(name)s", vars(self))
514
454
try:
515
455
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
456
#os.sleep(0.5)
517
457
#if self.checker.poll() is None:
518
458
# os.kill(self.checker.pid, signal.SIGKILL)
519
459
except OSError, error:
520
460
if error.errno != errno.ESRCH: # No such process
521
461
raise
522
462
self.checker = None
523
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
526
"""Decorators for marking methods of a DBusObjectWithProperties to
527
become properties on the D-Bus.
528
529
The decorated method will be called with no arguments by "Get"
530
and with one argument by "Set".
531
532
The parameters, where they are supported, are the same as
533
dbus.service.method, except there is only "signature", since the
534
type from Get() and the type sent to Set() is the same.
535
"""
536
# Encoding deeply encoded byte arrays is not supported yet by the
537
# "Set" method, so we fail early here:
538
if byte_arrays and signature != "ay":
539
raise ValueError("Byte arrays not supported for non-'ay'"
540
" signature %r" % signature)
541
def decorator(func):
542
func._dbus_is_property = True
543
func._dbus_interface = dbus_interface
544
func._dbus_signature = signature
545
func._dbus_access = access
546
func._dbus_name = func.__name__
547
if func._dbus_name.endswith("_dbus_property"):
548
func._dbus_name = func._dbus_name[:-14]
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
550
return func
551
return decorator
552
553
554
class DBusPropertyException(dbus.exceptions.DBusException):
555
"""A base class for D-Bus property-related exceptions
556
"""
557
def __unicode__(self):
558
return unicode(str(self))
559
560
561
class DBusPropertyAccessException(DBusPropertyException):
562
"""A property's access permissions disallows an operation.
563
"""
564
pass
565
566
567
class DBusPropertyNotFound(DBusPropertyException):
568
"""An attempt was made to access a non-existing property.
569
"""
570
pass
571
572
573
class DBusObjectWithProperties(dbus.service.Object):
574
"""A D-Bus object with properties.
575
576
Classes inheriting from this can use the dbus_service_property
577
decorator to expose methods as D-Bus properties. It exposes the
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
"""
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
592
def _get_dbus_property(self, interface_name, property_name):
593
"""Returns a bound method if one exists which is a D-Bus
594
property with the specified name and interface.
595
"""
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
606
# No such property
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
612
out_signature="v")
613
def Get(self, interface_name, property_name):
614
"""Standard D-Bus property Get() method, see D-Bus standard.
615
"""
616
prop = self._get_dbus_property(interface_name, property_name)
617
if prop._dbus_access == "write":
618
raise DBusPropertyAccessException(property_name)
619
value = prop()
620
if not hasattr(value, "variant_level"):
621
return value
622
return type(value)(value, variant_level=value.variant_level+1)
623
624
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
625
def Set(self, interface_name, property_name, value):
626
"""Standard D-Bus property Set() method, see D-Bus standard.
627
"""
628
prop = self._get_dbus_property(interface_name, property_name)
629
if prop._dbus_access == "read":
630
raise DBusPropertyAccessException(property_name)
631
if prop._dbus_get_args_options["byte_arrays"]:
632
# The byte_arrays option is not supported yet on
633
# signatures other than "ay".
634
if prop._dbus_signature != "ay":
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
638
prop(value)
639
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
641
out_signature="a{sv}")
642
def GetAll(self, interface_name):
643
"""Standard D-Bus property GetAll() method, see D-Bus
644
standard.
645
646
Note: Will not include properties with access="write".
647
"""
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
650
if (interface_name
651
and interface_name != prop._dbus_interface):
652
# Interface non-empty but did not match
653
continue
654
# Ignore write-only properties
655
if prop._dbus_access == "write":
656
continue
657
value = prop()
658
if not hasattr(value, "variant_level"):
659
all[name] = value
660
continue
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
664
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
666
out_signature="s",
667
path_keyword='object_path',
668
connection_keyword='connection')
669
def Introspect(self, object_path, connection):
670
"""Standard D-Bus method, overloaded to insert property tags.
671
"""
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
674
try:
675
document = xml.dom.minidom.parseString(xmlstring)
676
def make_tag(document, name, prop):
677
e = document.createElement("property")
678
e.setAttribute("name", name)
679
e.setAttribute("type", prop._dbus_signature)
680
e.setAttribute("access", prop._dbus_access)
681
return e
682
for if_tag in document.getElementsByTagName("interface"):
683
for tag in (make_tag(document, name, prop)
684
for name, prop
685
in self._get_all_dbus_properties()
686
if prop._dbus_interface
687
== if_tag.getAttribute("name")):
688
if_tag.appendChild(tag)
689
# Add the names to the return values for the
690
# "org.freedesktop.DBus.Properties" methods
691
if (if_tag.getAttribute("name")
692
== "org.freedesktop.DBus.Properties"):
693
for cn in if_tag.getElementsByTagName("method"):
694
if cn.getAttribute("name") == "Get":
695
for arg in cn.getElementsByTagName("arg"):
696
if (arg.getAttribute("direction")
697
== "out"):
698
arg.setAttribute("name", "value")
699
elif cn.getAttribute("name") == "GetAll":
700
for arg in cn.getElementsByTagName("arg"):
701
if (arg.getAttribute("direction")
702
== "out"):
703
arg.setAttribute("name", "props")
704
xmlstring = document.toxml("utf-8")
705
document.unlink()
706
except (AttributeError, xml.dom.DOMException,
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
713
class ClientDBus(Client, DBusObjectWithProperties):
463
464
def still_valid(self):
465
"""Has the timeout not yet passed for this client?"""
466
if not getattr(self, u"enabled", False):
467
return False
468
now = datetime.datetime.utcnow()
469
if self.last_checked_ok is None:
470
return now < (self.created + self.timeout)
471
else:
472
return now < (self.last_checked_ok + self.timeout)
473
474
475
class ClientDBus(Client, dbus.service.Object):
714
476
"""A Client class using D-Bus
715
477
716
478
Attributes:
717
dbus_object_path: dbus.ObjectPath
718
bus: dbus.SystemBus()
479
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
719
480
"""
720
721
runtime_expansions = (Client.runtime_expansions
722
+ ("dbus_object_path",))
723
724
481
# dbus.service.Object doesn't use super(), so we can't either.
725
482
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
728
self.bus = bus
483
def __init__(self, *args, **kwargs):
729
484
Client.__init__(self, *args, **kwargs)
730
485
# Only now, when this client is initialized, can it show up on
731
486
# the D-Bus
732
client_object_name = unicode(self.name).translate(
733
{ord("."): ord("_"),
734
ord("-"): ord("_")})
735
487
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
737
DBusObjectWithProperties.__init__(self, self.bus,
738
self.dbus_object_path)
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
488
(u"/clients/"
489
+ self.name.replace(u".", u"_")))
490
dbus.service.Object.__init__(self, bus,
491
self.dbus_object_path)
755
492
756
493
@staticmethod
757
494
def _datetime_to_dbus(dt, variant_level=0):
760
497
variant_level=variant_level)
761
498
762
499
def enable(self):
763
oldstate = getattr(self, "enabled", False)
500
oldstate = getattr(self, u"enabled", False)
764
501
r = Client.enable(self)
765
502
if oldstate != self.enabled:
766
503
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
504
self.PropertyChanged(dbus.String(u"enabled"),
768
505
dbus.Boolean(True, variant_level=1))
769
506
self.PropertyChanged(
770
dbus.String("LastEnabled"),
507
dbus.String(u"last_enabled"),
771
508
self._datetime_to_dbus(self.last_enabled,
772
509
variant_level=1))
773
510
return r
774
511
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
512
def disable(self, signal = True):
513
oldstate = getattr(self, u"enabled", False)
514
r = Client.disable(self)
515
if signal and oldstate != self.enabled:
779
516
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
517
self.PropertyChanged(dbus.String(u"enabled"),
781
518
dbus.Boolean(False, variant_level=1))
782
519
return r
783
520
786
523
self.remove_from_connection()
787
524
except LookupError:
788
525
pass
789
if hasattr(DBusObjectWithProperties, "__del__"):
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
526
if hasattr(dbus.service.Object, u"__del__"):
527
dbus.service.Object.__del__(self, *args, **kwargs)
791
528
Client.__del__(self, *args, **kwargs)
792
529
793
530
def checker_callback(self, pid, condition, command,
795
532
self.checker_callback_tag = None
796
533
self.checker = None
797
534
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
535
self.PropertyChanged(dbus.String(u"checker_running"),
799
536
dbus.Boolean(False, variant_level=1))
800
537
if os.WIFEXITED(condition):
801
538
exitstatus = os.WEXITSTATUS(condition)
816
553
r = Client.checked_ok(self, *args, **kwargs)
817
554
# Emit D-Bus signal
818
555
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
556
dbus.String(u"last_checked_ok"),
820
557
(self._datetime_to_dbus(self.last_checked_ok,
821
558
variant_level=1)))
822
559
return r
823
560
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
832
833
561
def start_checker(self, *args, **kwargs):
834
562
old_checker = self.checker
835
563
if self.checker is not None:
843
571
# Emit D-Bus signal
844
572
self.CheckerStarted(self.current_checker_command)
845
573
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
574
dbus.String(u"checker_running"),
847
575
dbus.Boolean(True, variant_level=1))
848
576
return r
849
577
850
578
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
579
old_checker = getattr(self, u"checker", None)
852
580
r = Client.stop_checker(self, *args, **kwargs)
853
581
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
582
and getattr(self, u"checker", None) is None):
583
self.PropertyChanged(dbus.String(u"checker_running"),
856
584
dbus.Boolean(False, variant_level=1))
857
585
return r
858
859
def _reset_approved(self):
860
self._approved = None
861
return False
862
863
def approve(self, value=True):
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
870
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
873
874
## Signals
586
587
## D-Bus methods & signals
588
_interface = u"se.bsnet.fukt.Mandos.Client"
589
590
# CheckedOK - method
591
@dbus.service.method(_interface)
592
def CheckedOK(self):
593
return self.checked_ok()
875
594
876
595
# CheckerCompleted - signal
877
@dbus.service.signal(_interface, signature="nxs")
596
@dbus.service.signal(_interface, signature=u"nxs")
878
597
def CheckerCompleted(self, exitcode, waitstatus, command):
879
598
"D-Bus signal"
880
599
pass
881
600
882
601
# CheckerStarted - signal
883
@dbus.service.signal(_interface, signature="s")
602
@dbus.service.signal(_interface, signature=u"s")
884
603
def CheckerStarted(self, command):
885
604
"D-Bus signal"
886
605
pass
887
606
607
# GetAllProperties - method
608
@dbus.service.method(_interface, out_signature=u"a{sv}")
609
def GetAllProperties(self):
610
"D-Bus method"
611
return dbus.Dictionary({
612
dbus.String(u"name"):
613
dbus.String(self.name, variant_level=1),
614
dbus.String(u"fingerprint"):
615
dbus.String(self.fingerprint, variant_level=1),
616
dbus.String(u"host"):
617
dbus.String(self.host, variant_level=1),
618
dbus.String(u"created"):
619
self._datetime_to_dbus(self.created,
620
variant_level=1),
621
dbus.String(u"last_enabled"):
622
(self._datetime_to_dbus(self.last_enabled,
623
variant_level=1)
624
if self.last_enabled is not None
625
else dbus.Boolean(False, variant_level=1)),
626
dbus.String(u"enabled"):
627
dbus.Boolean(self.enabled, variant_level=1),
628
dbus.String(u"last_checked_ok"):
629
(self._datetime_to_dbus(self.last_checked_ok,
630
variant_level=1)
631
if self.last_checked_ok is not None
632
else dbus.Boolean (False, variant_level=1)),
633
dbus.String(u"timeout"):
634
dbus.UInt64(self.timeout_milliseconds(),
635
variant_level=1),
636
dbus.String(u"interval"):
637
dbus.UInt64(self.interval_milliseconds(),
638
variant_level=1),
639
dbus.String(u"checker"):
640
dbus.String(self.checker_command,
641
variant_level=1),
642
dbus.String(u"checker_running"):
643
dbus.Boolean(self.checker is not None,
644
variant_level=1),
645
dbus.String(u"object_path"):
646
dbus.ObjectPath(self.dbus_object_path,
647
variant_level=1)
648
}, signature=u"sv")
649
650
# IsStillValid - method
651
@dbus.service.method(_interface, out_signature=u"b")
652
def IsStillValid(self):
653
return self.still_valid()
654
888
655
# PropertyChanged - signal
889
@dbus.service.signal(_interface, signature="sv")
656
@dbus.service.signal(_interface, signature=u"sv")
890
657
def PropertyChanged(self, property, value):
891
658
"D-Bus signal"
892
659
pass
893
660
894
# GotSecret - signal
661
# ReceivedSecret - signal
895
662
@dbus.service.signal(_interface)
896
def GotSecret(self):
897
"""D-Bus signal
898
Is sent after a successful transfer of secret from the Mandos
899
server to mandos-client
900
"""
663
def ReceivedSecret(self):
664
"D-Bus signal"
901
665
pass
902
666
903
667
# Rejected - signal
904
@dbus.service.signal(_interface, signature="s")
905
def Rejected(self, reason):
668
@dbus.service.signal(_interface)
669
def Rejected(self):
906
670
"D-Bus signal"
907
671
pass
908
672
909
# NeedApproval - signal
910
@dbus.service.signal(_interface, signature="tb")
911
def NeedApproval(self, timeout, default):
912
"D-Bus signal"
913
return self.need_approval()
914
915
## Methods
916
917
# Approve - method
918
@dbus.service.method(_interface, in_signature="b")
919
def Approve(self, value):
920
self.approve(value)
921
922
# CheckedOK - method
923
@dbus.service.method(_interface)
924
def CheckedOK(self):
925
return self.checked_ok()
673
# SetChecker - method
674
@dbus.service.method(_interface, in_signature=u"s")
675
def SetChecker(self, checker):
676
"D-Bus setter method"
677
self.checker_command = checker
678
# Emit D-Bus signal
679
self.PropertyChanged(dbus.String(u"checker"),
680
dbus.String(self.checker_command,
681
variant_level=1))
682
683
# SetHost - method
684
@dbus.service.method(_interface, in_signature=u"s")
685
def SetHost(self, host):
686
"D-Bus setter method"
687
self.host = host
688
# Emit D-Bus signal
689
self.PropertyChanged(dbus.String(u"host"),
690
dbus.String(self.host, variant_level=1))
691
692
# SetInterval - method
693
@dbus.service.method(_interface, in_signature=u"t")
694
def SetInterval(self, milliseconds):
695
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
696
# Emit D-Bus signal
697
self.PropertyChanged(dbus.String(u"interval"),
698
(dbus.UInt64(self.interval_milliseconds(),
699
variant_level=1)))
700
701
# SetSecret - method
702
@dbus.service.method(_interface, in_signature=u"ay",
703
byte_arrays=True)
704
def SetSecret(self, secret):
705
"D-Bus setter method"
706
self.secret = str(secret)
707
708
# SetTimeout - method
709
@dbus.service.method(_interface, in_signature=u"t")
710
def SetTimeout(self, milliseconds):
711
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"timeout"),
714
(dbus.UInt64(self.timeout_milliseconds(),
715
variant_level=1)))
926
716
927
717
# Enable - method
928
718
@dbus.service.method(_interface)
947
737
def StopChecker(self):
948
738
self.stop_checker()
949
739
950
## Properties
951
952
# ApprovalPending - property
953
@dbus_service_property(_interface, signature="b", access="read")
954
def ApprovalPending_dbus_property(self):
955
return dbus.Boolean(bool(self.approvals_pending))
956
957
# ApprovedByDefault - property
958
@dbus_service_property(_interface, signature="b",
959
access="readwrite")
960
def ApprovedByDefault_dbus_property(self, value=None):
961
if value is None: # get
962
return dbus.Boolean(self.approved_by_default)
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
967
968
# ApprovalDelay - property
969
@dbus_service_property(_interface, signature="t",
970
access="readwrite")
971
def ApprovalDelay_dbus_property(self, value=None):
972
if value is None: # get
973
return dbus.UInt64(self.approval_delay_milliseconds())
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
978
979
# ApprovalDuration - property
980
@dbus_service_property(_interface, signature="t",
981
access="readwrite")
982
def ApprovalDuration_dbus_property(self, value=None):
983
if value is None: # get
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
990
991
# Name - property
992
@dbus_service_property(_interface, signature="s", access="read")
993
def Name_dbus_property(self):
994
return dbus.String(self.name)
995
996
# Fingerprint - property
997
@dbus_service_property(_interface, signature="s", access="read")
998
def Fingerprint_dbus_property(self):
999
return dbus.String(self.fingerprint)
1000
1001
# Host - property
1002
@dbus_service_property(_interface, signature="s",
1003
access="readwrite")
1004
def Host_dbus_property(self, value=None):
1005
if value is None: # get
1006
return dbus.String(self.host)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1011
1012
# Created - property
1013
@dbus_service_property(_interface, signature="s", access="read")
1014
def Created_dbus_property(self):
1015
return dbus.String(self._datetime_to_dbus(self.created))
1016
1017
# LastEnabled - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def LastEnabled_dbus_property(self):
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1023
1024
# Enabled - property
1025
@dbus_service_property(_interface, signature="b",
1026
access="readwrite")
1027
def Enabled_dbus_property(self, value=None):
1028
if value is None: # get
1029
return dbus.Boolean(self.enabled)
1030
if value:
1031
self.enable()
1032
else:
1033
self.disable()
1034
1035
# LastCheckedOK - property
1036
@dbus_service_property(_interface, signature="s",
1037
access="readwrite")
1038
def LastCheckedOK_dbus_property(self, value=None):
1039
if value is not None:
1040
self.checked_ok()
1041
return
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1046
1047
# LastApprovalRequest - property
1048
@dbus_service_property(_interface, signature="s", access="read")
1049
def LastApprovalRequest_dbus_property(self):
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1055
1056
# Timeout - property
1057
@dbus_service_property(_interface, signature="t",
1058
access="readwrite")
1059
def Timeout_dbus_property(self, value=None):
1060
if value is None: # get
1061
return dbus.UInt64(self.timeout_milliseconds())
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1083
1084
# Interval - property
1085
@dbus_service_property(_interface, signature="t",
1086
access="readwrite")
1087
def Interval_dbus_property(self, value=None):
1088
if value is None: # get
1089
return dbus.UInt64(self.interval_milliseconds())
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1094
if getattr(self, "checker_initiator_tag", None) is None:
1095
return
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
1102
# Checker - property
1103
@dbus_service_property(_interface, signature="s",
1104
access="readwrite")
1105
def Checker_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.String(self.checker_command)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1113
1114
# CheckerRunning - property
1115
@dbus_service_property(_interface, signature="b",
1116
access="readwrite")
1117
def CheckerRunning_dbus_property(self, value=None):
1118
if value is None: # get
1119
return dbus.Boolean(self.checker is not None)
1120
if value:
1121
self.start_checker()
1122
else:
1123
self.stop_checker()
1124
1125
# ObjectPath - property
1126
@dbus_service_property(_interface, signature="o", access="read")
1127
def ObjectPath_dbus_property(self):
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1129
1130
# Secret = property
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1133
def Secret_dbus_property(self, value):
1134
self.secret = str(value)
1135
1136
740
del _interface
1137
741
1138
742
1139
class ProxyClient(object):
1140
def __init__(self, child_pipe, fpr, address):
1141
self._pipe = child_pipe
1142
self._pipe.send(('init', fpr, address))
1143
if not self._pipe.recv():
1144
raise KeyError()
1145
1146
def __getattribute__(self, name):
1147
if(name == '_pipe'):
1148
return super(ProxyClient, self).__getattribute__(name)
1149
self._pipe.send(('getattr', name))
1150
data = self._pipe.recv()
1151
if data[0] == 'data':
1152
return data[1]
1153
if data[0] == 'function':
1154
def func(*args, **kwargs):
1155
self._pipe.send(('funcall', name, args, kwargs))
1156
return self._pipe.recv()[1]
1157
return func
1158
1159
def __setattr__(self, name, value):
1160
if(name == '_pipe'):
1161
return super(ProxyClient, self).__setattr__(name, value)
1162
self._pipe.send(('setattr', name, value))
1163
1164
1165
743
class ClientHandler(socketserver.BaseRequestHandler, object):
1166
744
"""A class to handle client connections.
1167
745
1169
747
Note: This will run in its own forked process."""
1170
748
1171
749
def handle(self):
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1173
logger.info("TCP connection from: %s",
1174
unicode(self.client_address))
1175
logger.debug("Pipe FD: %d",
1176
self.server.child_pipe.fileno())
1177
750
logger.info(u"TCP connection from: %s",
751
unicode(self.client_address))
752
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
753
# Open IPC pipe to parent process
754
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1178
755
session = (gnutls.connection
1179
756
.ClientSession(self.request,
1180
757
gnutls.connection
1181
758
.X509Credentials()))
1182
759
760
line = self.request.makefile().readline()
761
logger.debug(u"Protocol version: %r", line)
762
try:
763
if int(line.strip().split()[0]) > 1:
764
raise RuntimeError
765
except (ValueError, IndexError, RuntimeError), error:
766
logger.error(u"Unknown protocol version: %s", error)
767
return
768
1183
769
# Note: gnutls.connection.X509Credentials is really a
1184
770
# generic GnuTLS certificate credentials object so long as
1185
771
# no X.509 keys are added to it. Therefore, we can use it
1186
772
# here despite using OpenPGP certificates.
1187
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1189
# "+AES-256-CBC", "+SHA1",
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1191
# "+DHE-DSS"))
773
774
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
775
# u"+AES-256-CBC", u"+SHA1",
776
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
777
# u"+DHE-DSS"))
1192
778
# Use a fallback default, since this MUST be set.
1193
779
priority = self.server.gnutls_priority
1194
780
if priority is None:
1195
priority = "NORMAL"
781
priority = u"NORMAL"
1196
782
(gnutls.library.functions
1197
783
.gnutls_priority_set_direct(session._c_object,
1198
784
priority, None))
1199
1200
# Start communication using the Mandos protocol
1201
# Get protocol number
1202
line = self.request.makefile().readline()
1203
logger.debug("Protocol version: %r", line)
1204
try:
1205
if int(line.strip().split()[0]) > 1:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
1208
logger.error("Unknown protocol version: %s", error)
1209
return
1210
1211
# Start GnuTLS connection
785
1212
786
try:
1213
787
session.handshake()
1214
788
except gnutls.errors.GNUTLSError, error:
1215
logger.warning("Handshake failed: %s", error)
789
logger.warning(u"Handshake failed: %s", error)
1216
790
# Do not run session.bye() here: the session is not
1217
791
# established. Just abandon the request.
1218
792
return
1219
logger.debug("Handshake succeeded")
1220
1221
approval_required = False
793
logger.debug(u"Handshake succeeded")
1222
794
try:
1223
try:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1227
logger.warning("Bad certificate: %s", error)
1228
return
1229
logger.debug("Fingerprint: %s", fpr)
1230
1231
try:
1232
client = ProxyClient(child_pipe, fpr,
1233
self.client_address)
1234
except KeyError:
1235
return
1236
1237
if client.approval_delay:
1238
delay = client.approval_delay
1239
client.approvals_pending += 1
1240
approval_required = True
1241
1242
while True:
1243
if not client.enabled:
1244
logger.warning("Client %s is disabled",
1245
client.name)
1246
if self.server.use_dbus:
1247
# Emit D-Bus signal
1248
client.Rejected("Disabled")
1249
return
1250
1251
if client._approved or not client.approval_delay:
1252
#We are approved or approval is disabled
1253
break
1254
elif client._approved is None:
1255
logger.info("Client %s needs approval",
1256
client.name)
1257
if self.server.use_dbus:
1258
# Emit D-Bus signal
1259
client.NeedApproval(
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1262
else:
1263
logger.warning("Client %s was not approved",
1264
client.name)
1265
if self.server.use_dbus:
1266
# Emit D-Bus signal
1267
client.Rejected("Denied")
1268
return
1269
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1272
time = datetime.datetime.now()
1273
client.changedstate.acquire()
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1275
client.changedstate.release()
1276
time2 = datetime.datetime.now()
1277
if (time2 - time) >= delay:
1278
if not client.approved_by_default:
1279
logger.warning("Client %s timed out while"
1280
" waiting for approval",
1281
client.name)
1282
if self.server.use_dbus:
1283
# Emit D-Bus signal
1284
client.Rejected("Approval timed out")
1285
return
1286
else:
1287
break
1288
else:
1289
delay -= time2 - time
1290
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
1302
1303
logger.info("Sending secret to %s", client.name)
1304
# bump the timeout as if seen
1305
client.checked_ok()
1306
if self.server.use_dbus:
1307
# Emit D-Bus signal
1308
client.GotSecret()
795
fpr = self.fingerprint(self.peer_certificate(session))
796
except (TypeError, gnutls.errors.GNUTLSError), error:
797
logger.warning(u"Bad certificate: %s", error)
798
session.bye()
799
return
800
logger.debug(u"Fingerprint: %s", fpr)
1309
801
1310
finally:
1311
if approval_required:
1312
client.approvals_pending -= 1
1313
try:
1314
session.bye()
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
802
for c in self.server.clients:
803
if c.fingerprint == fpr:
804
client = c
805
break
806
else:
807
ipc.write(u"NOTFOUND %s\n" % fpr)
808
session.bye()
809
return
810
# Have to check if client.still_valid(), since it is
811
# possible that the client timed out while establishing
812
# the GnuTLS session.
813
if not client.still_valid():
814
ipc.write(u"INVALID %s\n" % client.name)
815
session.bye()
816
return
817
ipc.write(u"SENDING %s\n" % client.name)
818
sent_size = 0
819
while sent_size < len(client.secret):
820
sent = session.send(client.secret[sent_size:])
821
logger.debug(u"Sent: %d, remaining: %d",
822
sent, len(client.secret)
823
- (sent_size + sent))
824
sent_size += sent
825
session.bye()
1317
826
1318
827
@staticmethod
1319
828
def peer_certificate(session):
1329
838
.gnutls_certificate_get_peers
1330
839
(session._c_object, ctypes.byref(list_size)))
1331
840
if not bool(cert_list) and list_size.value != 0:
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
841
raise gnutls.errors.GNUTLSError(u"error getting peer"
842
u" certificate")
1334
843
if list_size.value == 0:
1335
844
return None
1336
845
cert = cert_list[0]
1362
871
if crtverify.value != 0:
1363
872
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
873
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
874
(u"Verify failed"))
1366
875
# New buffer for the fingerprint
1367
876
buf = ctypes.create_string_buffer(20)
1368
877
buf_len = ctypes.c_size_t()
1375
884
# Convert the buffer to a Python bytestring
1376
885
fpr = ctypes.string_at(buf, buf_len.value)
1377
886
# Convert the bytestring to hexadecimal notation
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
887
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1379
888
return hex_fpr
1380
889
1381
890
1382
class MultiprocessingMixIn(object):
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1384
def sub_process_main(self, request, address):
1385
try:
1386
self.finish_request(request, address)
1387
except:
1388
self.handle_error(request, address)
1389
self.close_request(request)
1390
1391
def process_request(self, request, address):
1392
"""Start a new process to process the request."""
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1395
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1397
""" adds a pipe to the MixIn """
891
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
892
"""Like socketserver.ForkingMixIn, but also pass a pipe.
893
894
Assumes a gobject.MainLoop event loop.
895
"""
1398
896
def process_request(self, request, client_address):
1399
897
"""Overrides and wraps the original process_request().
1400
898
1401
This function creates a new pipe in self.pipe
899
This function creates a new pipe in self.pipe
1402
900
"""
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1404
1405
super(MultiprocessingMixInWithPipe,
901
self.pipe = os.pipe()
902
super(ForkingMixInWithPipe,
1406
903
self).process_request(request, client_address)
1407
self.child_pipe.close()
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
904
os.close(self.pipe[1]) # close write end
905
# Call "handle_ipc" for both data and EOF events
906
gobject.io_add_watch(self.pipe[0],
907
gobject.IO_IN | gobject.IO_HUP,
908
self.handle_ipc)
909
def handle_ipc(source, condition):
1411
910
"""Dummy function; override as necessary"""
1412
raise NotImplementedError
1413
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
911
os.close(source)
912
return False
913
914
915
class IPv6_TCPServer(ForkingMixInWithPipe,
1415
916
socketserver.TCPServer, object):
1416
917
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1417
918
1419
920
enabled: Boolean; whether this server is activated yet
1420
921
interface: None or a network interface name (string)
1421
922
use_ipv6: Boolean; to use IPv6 or not
923
----
924
clients: set of Client objects
925
gnutls_priority GnuTLS priority string
926
use_dbus: Boolean; to emit D-Bus signals or not
1422
927
"""
1423
928
def __init__(self, server_address, RequestHandlerClass,
1424
interface=None, use_ipv6=True):
929
interface=None, use_ipv6=True, clients=None,
930
gnutls_priority=None, use_dbus=True):
931
self.enabled = False
1425
932
self.interface = interface
1426
933
if use_ipv6:
1427
934
self.address_family = socket.AF_INET6
935
self.clients = clients
936
self.use_dbus = use_dbus
937
self.gnutls_priority = gnutls_priority
1428
938
socketserver.TCPServer.__init__(self, server_address,
1429
939
RequestHandlerClass)
1430
940
def server_bind(self):
1432
942
to bind to an interface if one was specified, and also NOT to
1433
943
bind to an address or port if they were not specified."""
1434
944
if self.interface is not None:
1435
if SO_BINDTODEVICE is None:
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
1438
self.interface)
1439
else:
1440
try:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
1453
self.interface)
1454
else:
1455
raise
945
try:
946
self.socket.setsockopt(socket.SOL_SOCKET,
947
SO_BINDTODEVICE,
948
str(self.interface + u'\0'))
949
except socket.error, error:
950
if error[0] == errno.EPERM:
951
logger.error(u"No permission to"
952
u" bind to interface %s",
953
self.interface)
954
else:
955
raise
1456
956
# Only bind(2) the socket if we really need to.
1457
957
if self.server_address[0] or self.server_address[1]:
1458
958
if not self.server_address[0]:
1459
959
if self.address_family == socket.AF_INET6:
1460
any_address = "::" # in6addr_any
960
any_address = u"::" # in6addr_any
1461
961
else:
1462
962
any_address = socket.INADDR_ANY
1463
963
self.server_address = (any_address,
1472
972
# if_nametoindex
1473
973
# (self.interface))
1474
974
return socketserver.TCPServer.server_bind(self)
1475
1476
1477
class MandosServer(IPv6_TCPServer):
1478
"""Mandos server.
1479
1480
Attributes:
1481
clients: set of Client objects
1482
gnutls_priority GnuTLS priority string
1483
use_dbus: Boolean; to emit D-Bus signals or not
1484
1485
Assumes a gobject.MainLoop event loop.
1486
"""
1487
def __init__(self, server_address, RequestHandlerClass,
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
1490
self.enabled = False
1491
self.clients = clients
1492
if self.clients is None:
1493
self.clients = set()
1494
self.use_dbus = use_dbus
1495
self.gnutls_priority = gnutls_priority
1496
IPv6_TCPServer.__init__(self, server_address,
1497
RequestHandlerClass,
1498
interface = interface,
1499
use_ipv6 = use_ipv6)
1500
975
def server_activate(self):
1501
976
if self.enabled:
1502
977
return socketserver.TCPServer.server_activate(self)
1503
978
def enable(self):
1504
979
self.enabled = True
1505
def add_pipe(self, parent_pipe):
1506
# Call "handle_ipc" for both data and EOF events
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
1513
client_object=None):
980
def handle_ipc(self, source, condition, file_objects={}):
1514
981
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
982
gobject.IO_IN: u"IN", # There is data to read.
983
gobject.IO_OUT: u"OUT", # Data can be written (without
1517
984
# blocking).
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
985
gobject.IO_PRI: u"PRI", # There is urgent data to read.
986
gobject.IO_ERR: u"ERR", # Error condition.
987
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1521
988
# broken, usually for pipes and
1522
989
# sockets).
1523
990
}
1525
992
for cond, name in
1526
993
condition_names.iteritems()
1527
994
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1530
return False
1531
1532
# Read a request from the child
1533
request = parent_pipe.recv()
1534
command = request[0]
1535
1536
if command == 'init':
1537
fpr = request[1]
1538
address = request[2]
1539
1540
for c in self.clients:
1541
if c.fingerprint == fpr:
1542
client = c
1543
break
1544
else:
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
1547
if self.use_dbus:
1548
# Emit D-Bus signal
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
1550
parent_pipe.send(False)
1551
return False
1552
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
1558
parent_pipe.send(True)
1559
# remove the old hook in favor of the new above hook on same fileno
1560
return False
1561
if command == 'funcall':
1562
funcname = request[1]
1563
args = request[2]
1564
kwargs = request[3]
1565
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
1568
if command == 'getattr':
1569
attrname = request[1]
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
1572
else:
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1574
1575
if command == 'setattr':
1576
attrname = request[1]
1577
value = request[2]
1578
setattr(client_object, attrname, value)
1579
995
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
996
conditions_string)
997
998
# Turn the pipe file descriptor into a Python file object
999
if source not in file_objects:
1000
file_objects[source] = os.fdopen(source, u"r", 1)
1001
1002
# Read a line from the file object
1003
cmdline = file_objects[source].readline()
1004
if not cmdline: # Empty line means end of file
1005
# close the IPC pipe
1006
file_objects[source].close()
1007
del file_objects[source]
1008
1009
# Stop calling this function
1010
return False
1011
1012
logger.debug(u"IPC command: %r", cmdline)
1013
1014
# Parse and act on command
1015
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1016
1017
if cmd == u"NOTFOUND":
1018
logger.warning(u"Client not found for fingerprint: %s",
1019
args)
1020
if self.use_dbus:
1021
# Emit D-Bus signal
1022
mandos_dbus_service.ClientNotFound(args)
1023
elif cmd == u"INVALID":
1024
for client in self.clients:
1025
if client.name == args:
1026
logger.warning(u"Client %s is invalid", args)
1027
if self.use_dbus:
1028
# Emit D-Bus signal
1029
client.Rejected()
1030
break
1031
else:
1032
logger.error(u"Unknown client %s is invalid", args)
1033
elif cmd == u"SENDING":
1034
for client in self.clients:
1035
if client.name == args:
1036
logger.info(u"Sending secret to %s", client.name)
1037
client.checked_ok()
1038
if self.use_dbus:
1039
# Emit D-Bus signal
1040
client.ReceivedSecret()
1041
break
1042
else:
1043
logger.error(u"Sending secret to unknown client %s",
1044
args)
1045
else:
1046
logger.error(u"Unknown IPC command: %r", cmdline)
1047
1048
# Keep calling this function
1580
1049
return True
1581
1050
1582
1051
1583
1052
def string_to_delta(interval):
1584
1053
"""Parse a string and return a datetime.timedelta
1585
1054
1586
>>> string_to_delta('7d')
1055
>>> string_to_delta(u'7d')
1587
1056
datetime.timedelta(7)
1588
>>> string_to_delta('60s')
1057
>>> string_to_delta(u'60s')
1589
1058
datetime.timedelta(0, 60)
1590
>>> string_to_delta('60m')
1059
>>> string_to_delta(u'60m')
1591
1060
datetime.timedelta(0, 3600)
1592
>>> string_to_delta('24h')
1061
>>> string_to_delta(u'24h')
1593
1062
datetime.timedelta(1)
1594
>>> string_to_delta('1w')
1063
>>> string_to_delta(u'1w')
1595
1064
datetime.timedelta(7)
1596
>>> string_to_delta('5m 30s')
1065
>>> string_to_delta(u'5m 30s')
1597
1066
datetime.timedelta(0, 330)
1598
1067
"""
1599
1068
timevalue = datetime.timedelta(0)
1601
1070
try:
1602
1071
suffix = unicode(s[-1])
1603
1072
value = int(s[:-1])
1604
if suffix == "d":
1073
if suffix == u"d":
1605
1074
delta = datetime.timedelta(value)
1606
elif suffix == "s":
1075
elif suffix == u"s":
1607
1076
delta = datetime.timedelta(0, value)
1608
elif suffix == "m":
1077
elif suffix == u"m":
1609
1078
delta = datetime.timedelta(0, 0, 0, 0, value)
1610
elif suffix == "h":
1079
elif suffix == u"h":
1611
1080
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1612
elif suffix == "w":
1081
elif suffix == u"w":
1613
1082
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1614
1083
else:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
1617
raise ValueError(*(e.args))
1084
raise ValueError
1085
except (ValueError, IndexError):
1086
raise ValueError
1618
1087
timevalue += delta
1619
1088
return timevalue
1620
1089
1626
1095
global if_nametoindex
1627
1096
try:
1628
1097
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1098
(ctypes.util.find_library(u"c"))
1630
1099
.if_nametoindex)
1631
1100
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1101
logger.warning(u"Doing if_nametoindex the hard way")
1633
1102
def if_nametoindex(interface):
1634
1103
"Get an interface index the hard way, i.e. using fcntl()"
1635
1104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1105
with closing(socket.socket()) as s:
1637
1106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1107
struct.pack(str(u"16s16x"),
1639
1108
interface))
1640
interface_index = struct.unpack(str("I"),
1109
interface_index = struct.unpack(str(u"I"),
1641
1110
ifreq[16:20])[0]
1642
1111
return interface_index
1643
1112
return if_nametoindex(interface)
1651
1120
sys.exit()
1652
1121
os.setsid()
1653
1122
if not nochdir:
1654
os.chdir("/")
1123
os.chdir(u"/")
1655
1124
if os.fork():
1656
1125
sys.exit()
1657
1126
if not noclose:
1659
1128
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1660
1129
if not stat.S_ISCHR(os.fstat(null).st_mode):
1661
1130
raise OSError(errno.ENODEV,
1662
"%s not a character device"
1663
% os.path.devnull)
1131
u"/dev/null not a character device")
1664
1132
os.dup2(null, sys.stdin.fileno())
1665
1133
os.dup2(null, sys.stdout.fileno())
1666
1134
os.dup2(null, sys.stderr.fileno())
1670
1138
1671
1139
def main():
1672
1140
1673
##################################################################
1141
######################################################################
1674
1142
# Parsing of options, both command line and config file
1675
1143
1676
1144
parser = optparse.OptionParser(version = "%%prog %s" % version)
1677
parser.add_option("-i", "--interface", type="string",
1678
metavar="IF", help="Bind to interface IF")
1679
parser.add_option("-a", "--address", type="string",
1680
help="Address to listen for requests on")
1681
parser.add_option("-p", "--port", type="int",
1682
help="Port number to receive requests on")
1683
parser.add_option("--check", action="store_true",
1684
help="Run self-test")
1685
parser.add_option("--debug", action="store_true",
1686
help="Debug mode; run in foreground and log to"
1687
" terminal")
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
parser.add_option("--priority", type="string", help="GnuTLS"
1691
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1694
parser.add_option("--configdir", type="string",
1695
default="/etc/mandos", metavar="DIR",
1696
help="Directory to search for configuration"
1697
" files")
1698
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1701
parser.add_option("--no-ipv6", action="store_false",
1702
dest="use_ipv6", help="Do not use IPv6")
1145
parser.add_option("-i", u"--interface", type=u"string",
1146
metavar="IF", help=u"Bind to interface IF")
1147
parser.add_option("-a", u"--address", type=u"string",
1148
help=u"Address to listen for requests on")
1149
parser.add_option("-p", u"--port", type=u"int",
1150
help=u"Port number to receive requests on")
1151
parser.add_option("--check", action=u"store_true",
1152
help=u"Run self-test")
1153
parser.add_option("--debug", action=u"store_true",
1154
help=u"Debug mode; run in foreground and log to"
1155
u" terminal")
1156
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1157
u" priority string (see GnuTLS documentation)")
1158
parser.add_option("--servicename", type=u"string",
1159
metavar=u"NAME", help=u"Zeroconf service name")
1160
parser.add_option("--configdir", type=u"string",
1161
default=u"/etc/mandos", metavar=u"DIR",
1162
help=u"Directory to search for configuration"
1163
u" files")
1164
parser.add_option("--no-dbus", action=u"store_false",
1165
dest=u"use_dbus", help=u"Do not provide D-Bus"
1166
u" system bus interface")
1167
parser.add_option("--no-ipv6", action=u"store_false",
1168
dest=u"use_ipv6", help=u"Do not use IPv6")
1703
1169
options = parser.parse_args()[0]
1704
1170
1705
1171
if options.check:
1708
1174
sys.exit()
1709
1175
1710
1176
# Default values for config file for server-global settings
1711
server_defaults = { "interface": "",
1712
"address": "",
1713
"port": "",
1714
"debug": "False",
1715
"priority":
1716
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1717
"servicename": "Mandos",
1718
"use_dbus": "True",
1719
"use_ipv6": "True",
1720
"debuglevel": "",
1177
server_defaults = { u"interface": u"",
1178
u"address": u"",
1179
u"port": u"",
1180
u"debug": u"False",
1181
u"priority":
1182
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1183
u"servicename": u"Mandos",
1184
u"use_dbus": u"True",
1185
u"use_ipv6": u"True",
1721
1186
}
1722
1187
1723
1188
# Parse config file for server-global settings
1724
1189
server_config = configparser.SafeConfigParser(server_defaults)
1725
1190
del server_defaults
1726
1191
server_config.read(os.path.join(options.configdir,
1727
"mandos.conf"))
1192
u"mandos.conf"))
1728
1193
# Convert the SafeConfigParser object to a dict
1729
1194
server_settings = server_config.defaults()
1730
1195
# Use the appropriate methods on the non-string config options
1731
for option in ("debug", "use_dbus", "use_ipv6"):
1732
server_settings[option] = server_config.getboolean("DEFAULT",
1196
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1197
server_settings[option] = server_config.getboolean(u"DEFAULT",
1733
1198
option)
1734
1199
if server_settings["port"]:
1735
server_settings["port"] = server_config.getint("DEFAULT",
1736
"port")
1200
server_settings["port"] = server_config.getint(u"DEFAULT",
1201
u"port")
1737
1202
del server_config
1738
1203
1739
1204
# Override the settings from the config file with command line
1740
1205
# options, if set.
1741
for option in ("interface", "address", "port", "debug",
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
1206
for option in (u"interface", u"address", u"port", u"debug",
1207
u"priority", u"servicename", u"configdir",
1208
u"use_dbus", u"use_ipv6"):
1744
1209
value = getattr(options, option)
1745
1210
if value is not None:
1746
1211
server_settings[option] = value
1754
1219
##################################################################
1755
1220
1756
1221
# For convenience
1757
debug = server_settings["debug"]
1758
debuglevel = server_settings["debuglevel"]
1759
use_dbus = server_settings["use_dbus"]
1760
use_ipv6 = server_settings["use_ipv6"]
1761
1762
if server_settings["servicename"] != "Mandos":
1222
debug = server_settings[u"debug"]
1223
use_dbus = server_settings[u"use_dbus"]
1224
use_ipv6 = server_settings[u"use_ipv6"]
1225
1226
if not debug:
1227
syslogger.setLevel(logging.WARNING)
1228
console.setLevel(logging.WARNING)
1229
1230
if server_settings[u"servicename"] != u"Mandos":
1763
1231
syslogger.setFormatter(logging.Formatter
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
1232
(u'Mandos (%s) [%%(process)d]:'
1233
u' %%(levelname)s: %%(message)s'
1234
% server_settings[u"servicename"]))
1767
1235
1768
1236
# Parse config file with clients
1769
client_defaults = { "timeout": "1h",
1770
"interval": "5m",
1771
"checker": "fping -q -- %%(host)s",
1772
"host": "",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1237
client_defaults = { u"timeout": u"1h",
1238
u"interval": u"5m",
1239
u"checker": u"fping -q -- %%(host)s",
1240
u"host": u"",
1775
1241
}
1776
1242
client_config = configparser.SafeConfigParser(client_defaults)
1777
client_config.read(os.path.join(server_settings["configdir"],
1778
"clients.conf"))
1243
client_config.read(os.path.join(server_settings[u"configdir"],
1244
u"clients.conf"))
1779
1245
1780
1246
global mandos_dbus_service
1781
1247
mandos_dbus_service = None
1782
1248
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1785
ClientHandler,
1786
interface=(server_settings["interface"]
1787
or None),
1788
use_ipv6=use_ipv6,
1789
gnutls_priority=
1790
server_settings["priority"],
1791
use_dbus=use_dbus)
1792
if not debug:
1793
pidfilename = "/var/run/mandos.pid"
1794
try:
1795
pidfile = open(pidfilename, "w")
1796
except IOError:
1797
logger.error("Could not open file %r", pidfilename)
1249
clients = set()
1250
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1251
server_settings[u"port"]),
1252
ClientHandler,
1253
interface=
1254
server_settings[u"interface"],
1255
use_ipv6=use_ipv6,
1256
clients=clients,
1257
gnutls_priority=
1258
server_settings[u"priority"],
1259
use_dbus=use_dbus)
1260
pidfilename = u"/var/run/mandos.pid"
1261
try:
1262
pidfile = open(pidfilename, u"w")
1263
except IOError:
1264
logger.error(u"Could not open file %r", pidfilename)
1798
1265
1799
1266
try:
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
1267
uid = pwd.getpwnam(u"_mandos").pw_uid
1268
gid = pwd.getpwnam(u"_mandos").pw_gid
1802
1269
except KeyError:
1803
1270
try:
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
1271
uid = pwd.getpwnam(u"mandos").pw_uid
1272
gid = pwd.getpwnam(u"mandos").pw_gid
1806
1273
except KeyError:
1807
1274
try:
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1275
uid = pwd.getpwnam(u"nobody").pw_uid
1276
gid = pwd.getpwnam(u"nobody").pw_gid
1810
1277
except KeyError:
1811
1278
uid = 65534
1812
1279
gid = 65534
1817
1284
if error[0] != errno.EPERM:
1818
1285
raise error
1819
1286
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1823
if debuglevel:
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
1827
1287
# Enable all possible GnuTLS debugging
1828
1288
if debug:
1829
# Enable all possible GnuTLS debugging
1830
1831
1289
# "Use a log level over 10 to enable all debugging options."
1832
1290
# - GnuTLS manual
1833
1291
gnutls.library.functions.gnutls_global_set_log_level(11)
1834
1292
1835
1293
@gnutls.library.types.gnutls_log_func
1836
1294
def debug_gnutls(level, string):
1837
logger.debug("GnuTLS: %s", string[:-1])
1295
logger.debug(u"GnuTLS: %s", string[:-1])
1838
1296
1839
1297
(gnutls.library.functions
1840
1298
.gnutls_global_set_log_function(debug_gnutls))
1841
1842
# Redirect stdin so all checkers get /dev/null
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1844
os.dup2(null, sys.stdin.fileno())
1845
if null > 2:
1846
os.close(null)
1847
else:
1848
# No console logging
1849
logger.removeHandler(console)
1850
1299
1851
# Need to fork before connecting to D-Bus
1852
if not debug:
1853
# Close all input and output, do double fork, etc.
1854
daemon()
1300
global service
1301
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1302
service = AvahiService(name = server_settings[u"servicename"],
1303
servicetype = u"_mandos._tcp",
1304
protocol = protocol)
1305
if server_settings["interface"]:
1306
service.interface = (if_nametoindex
1307
(str(server_settings[u"interface"])))
1855
1308
1856
1309
global main_loop
1310
global bus
1857
1311
# From the Avahi example code
1858
1312
DBusGMainLoop(set_as_default=True )
1859
1313
main_loop = gobject.MainLoop()
1860
1314
bus = dbus.SystemBus()
1861
1315
# End of Avahi example code
1862
1316
if use_dbus:
1863
try:
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
1868
use_dbus = False
1869
server_settings["use_dbus"] = False
1870
tcp_server.use_dbus = False
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1874
protocol = protocol, bus = bus)
1875
if server_settings["interface"]:
1876
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
1878
1879
global multiprocessing_manager
1880
multiprocessing_manager = multiprocessing.Manager()
1317
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1881
1318
1882
1319
client_class = Client
1883
1320
if use_dbus:
1884
client_class = functools.partial(ClientDBus, bus = bus)
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1890
}
1891
for name, value in config.items(section):
1892
try:
1893
yield (name, special_settings[name]())
1894
except KeyError:
1895
yield (name, value)
1896
1897
tcp_server.clients.update(set(
1321
client_class = ClientDBus
1322
clients.update(set(
1898
1323
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1324
config= dict(client_config.items(section)))
1901
1325
for section in client_config.sections()))
1902
if not tcp_server.clients:
1903
logger.warning("No clients defined")
1326
if not clients:
1327
logger.warning(u"No clients defined")
1328
1329
if debug:
1330
# Redirect stdin so all checkers get /dev/null
1331
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1332
os.dup2(null, sys.stdin.fileno())
1333
if null > 2:
1334
os.close(null)
1335
else:
1336
# No console logging
1337
logger.removeHandler(console)
1338
# Close all input and output, do double fork, etc.
1339
daemon()
1340
1341
try:
1342
with closing(pidfile):
1343
pid = os.getpid()
1344
pidfile.write(str(pid) + "\n")
1345
del pidfile
1346
except IOError:
1347
logger.error(u"Could not write to file %r with PID %d",
1348
pidfilename, pid)
1349
except NameError:
1350
# "pidfile" was never created
1351
pass
1352
del pidfilename
1353
1354
def cleanup():
1355
"Cleanup function; run on exit"
1356
service.cleanup()
1904
1357
1358
while clients:
1359
client = clients.pop()
1360
client.disable_hook = None
1361
client.disable()
1362
1363
atexit.register(cleanup)
1364
1905
1365
if not debug:
1906
try:
1907
with pidfile:
1908
pid = os.getpid()
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1910
del pidfile
1911
except IOError:
1912
logger.error("Could not write to file %r with PID %d",
1913
pidfilename, pid)
1914
except NameError:
1915
# "pidfile" was never created
1916
pass
1917
del pidfilename
1918
1919
1366
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
1921
1367
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1922
1368
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1923
1369
1925
1371
class MandosDBusService(dbus.service.Object):
1926
1372
"""A D-Bus proxy object"""
1927
1373
def __init__(self):
1928
dbus.service.Object.__init__(self, bus, "/")
1929
_interface = "se.bsnet.fukt.Mandos"
1930
1931
@dbus.service.signal(_interface, signature="o")
1932
def ClientAdded(self, objpath):
1933
"D-Bus signal"
1934
pass
1935
1936
@dbus.service.signal(_interface, signature="ss")
1937
def ClientNotFound(self, fingerprint, address):
1938
"D-Bus signal"
1939
pass
1940
1941
@dbus.service.signal(_interface, signature="os")
1374
dbus.service.Object.__init__(self, bus, u"/")
1375
_interface = u"se.bsnet.fukt.Mandos"
1376
1377
@dbus.service.signal(_interface, signature=u"oa{sv}")
1378
def ClientAdded(self, objpath, properties):
1379
"D-Bus signal"
1380
pass
1381
1382
@dbus.service.signal(_interface, signature=u"s")
1383
def ClientNotFound(self, fingerprint):
1384
"D-Bus signal"
1385
pass
1386
1387
@dbus.service.signal(_interface, signature=u"os")
1942
1388
def ClientRemoved(self, objpath, name):
1943
1389
"D-Bus signal"
1944
1390
pass
1945
1391
1946
@dbus.service.method(_interface, out_signature="ao")
1392
@dbus.service.method(_interface, out_signature=u"ao")
1947
1393
def GetAllClients(self):
1948
1394
"D-Bus method"
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
1395
return dbus.Array(c.dbus_object_path for c in clients)
1951
1396
1952
1397
@dbus.service.method(_interface,
1953
out_signature="a{oa{sv}}")
1398
out_signature=u"a{oa{sv}}")
1954
1399
def GetAllClientsWithProperties(self):
1955
1400
"D-Bus method"
1956
1401
return dbus.Dictionary(
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
1959
signature="oa{sv}")
1402
((c.dbus_object_path, c.GetAllProperties())
1403
for c in clients),
1404
signature=u"oa{sv}")
1960
1405
1961
@dbus.service.method(_interface, in_signature="o")
1406
@dbus.service.method(_interface, in_signature=u"o")
1962
1407
def RemoveClient(self, object_path):
1963
1408
"D-Bus method"
1964
for c in tcp_server.clients:
1409
for c in clients:
1965
1410
if c.dbus_object_path == object_path:
1966
tcp_server.clients.remove(c)
1411
clients.remove(c)
1967
1412
c.remove_from_connection()
1968
1413
# Don't signal anything except ClientRemoved
1969
c.disable(quiet=True)
1414
c.disable(signal=False)
1970
1415
# Emit D-Bus signal
1971
1416
self.ClientRemoved(object_path, c.name)
1972
1417
return
1973
raise KeyError(object_path)
1418
raise KeyError
1974
1419
1975
1420
del _interface
1976
1421
1977
1422
mandos_dbus_service = MandosDBusService()
1978
1423
1979
def cleanup():
1980
"Cleanup function; run on exit"
1981
service.cleanup()
1982
1983
while tcp_server.clients:
1984
client = tcp_server.clients.pop()
1985
if use_dbus:
1986
client.remove_from_connection()
1987
client.disable_hook = None
1988
# Don't signal anything except ClientRemoved
1989
client.disable(quiet=True)
1990
if use_dbus:
1991
# Emit D-Bus signal
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1993
client.name)
1994
1995
atexit.register(cleanup)
1996
1997
for client in tcp_server.clients:
1424
for client in clients:
1998
1425
if use_dbus:
1999
1426
# Emit D-Bus signal
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1427
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1428
client.GetAllProperties())
2001
1429
client.enable()
2002
1430
2003
1431
tcp_server.enable()
2006
1434
# Find out what port we got
2007
1435
service.port = tcp_server.socket.getsockname()[1]
2008
1436
if use_ipv6:
2009
logger.info("Now listening on address %r, port %d,"
1437
logger.info(u"Now listening on address %r, port %d,"
2010
1438
" flowinfo %d, scope_id %d"
2011
1439
% tcp_server.socket.getsockname())
2012
1440
else: # IPv4
2013
logger.info("Now listening on address %r, port %d"
1441
logger.info(u"Now listening on address %r, port %d"
2014
1442
% tcp_server.socket.getsockname())
2015
1443
2016
1444
#service.interface = tcp_server.socket.getsockname()[3]
2020
1448
try:
2021
1449
service.activate()
2022
1450
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
1451
logger.critical(u"DBusException: %s", error)
2025
1452
sys.exit(1)
2026
1453
# End of Avahi example code
2027
1454
2030
1457
(tcp_server.handle_request
2031
1458
(*args[2:], **kwargs) or True))
2032
1459
2033
logger.debug("Starting main loop")
1460
logger.debug(u"Starting main loop")
2034
1461
main_loop.run()
2035
1462
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
2037
cleanup()
1463
logger.critical(u"AvahiError: %s", error)
2038
1464
sys.exit(1)
2039
1465
except KeyboardInterrupt:
2040
1466
if debug:
2041
print("", file=sys.stderr)
2042
logger.debug("Server received KeyboardInterrupt")
2043
logger.debug("Server exiting")
2044
# Must run before the D-Bus bus name gets deregistered
2045
cleanup()
1467
print >> sys.stderr
1468
logger.debug(u"Server received KeyboardInterrupt")
1469
logger.debug(u"Server exiting")
2046
1470
2047
1471
if __name__ == '__main__':
2048
1472
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0