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- Committer: Teddy Hogeborn
- Date: 2009-04-16 21:33:49 UTC
- Revision ID: teddy@fukt.bsnet.se-20090416213349-dwtllm8tvh2i0xbk
* mandos: Minor doc string fixes.
(SO_BINDTODEVICE): Do not guess if not found.
(IPv6_TCPServer.server_bind): Handle case where SO_BINDTODEVICE is
not available.
(SO_BINDTODEVICE): Do not guess if not found.
(IPv6_TCPServer.server_bind): Handle case where SO_BINDTODEVICE is
not available.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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12
#
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# Everything else is
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# Copyright © 2008-2010 Teddy Hogeborn
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# Copyright © 2008-2010 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# Contact the authors at <mandos@fukt.bsnet.se>.
32
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#
33
33
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
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import SocketServer as socketserver
38
37
import socket
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import logging
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import logging.handlers
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import pwd
59
import contextlib
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from contextlib import closing
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import struct
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import fcntl
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import functools
63
import cPickle as pickle
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import multiprocessing
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62
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import dbus
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import dbus.service
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from dbus.mainloop.glib import DBusGMainLoop
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68
import ctypes
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import ctypes.util
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import xml.dom.minidom
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import inspect
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70
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try:
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72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
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SO_BINDTODEVICE = None
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78
84
79
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version = "1.2.3"
80
version = "1.0.8"
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#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
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logger = logging.Logger(u'mandos')
89
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syslogger = (logging.handlers.SysLogHandler
90
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
85
address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
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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'))
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
101
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logger.addHandler(console)
102
96
103
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class AvahiError(Exception):
120
114
Attributes:
121
115
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'
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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
136
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"""
137
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768,
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domain = u"", host = u"", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
142
136
self.name = name
154
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def rename(self):
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"""Derived from the Avahi example code"""
156
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if self.rename_count >= self.max_renames:
157
logger.critical("No suitable Zeroconf service name found"
158
" after %i retries, exiting.",
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logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
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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)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
164
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syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
159
(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
167
161
% self.name))
168
162
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)
163
self.add()
175
164
self.rename_count += 1
176
165
def remove(self):
177
166
"""Derived from the Avahi example code"""
185
174
self.server.EntryGroupNew()),
186
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
187
176
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
191
179
self.name, self.type)
192
180
self.group.AddService(
193
181
self.interface,
200
188
self.group.Commit()
201
189
def entry_group_state_changed(self, state, error):
202
190
"""Derived from the Avahi example code"""
203
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
204
192
205
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
206
logger.debug("Zeroconf service established.")
194
logger.debug(u"Zeroconf service established.")
207
195
elif state == avahi.ENTRY_GROUP_COLLISION:
208
logger.info("Zeroconf service name collision.")
196
logger.warning(u"Zeroconf service name collision.")
209
197
self.rename()
210
198
elif state == avahi.ENTRY_GROUP_FAILURE:
211
logger.critical("Avahi: Error in group state changed %s",
199
logger.critical(u"Avahi: Error in group state changed %s",
212
200
unicode(error))
213
raise AvahiGroupError("State changed: %s"
201
raise AvahiGroupError(u"State changed: %s"
214
202
% unicode(error))
215
203
def cleanup(self):
216
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"""Derived from the Avahi example code"""
219
207
self.group = None
220
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def server_state_changed(self, state):
221
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"""Derived from the Avahi example code"""
222
logger.debug("Avahi server state change: %i", state)
223
210
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
211
logger.error(u"Zeroconf server name collision")
225
212
self.remove()
226
213
elif state == avahi.SERVER_RUNNING:
227
214
self.add()
232
219
self.bus.get_object(avahi.DBUS_NAME,
233
220
avahi.DBUS_PATH_SERVER),
234
221
avahi.DBUS_INTERFACE_SERVER)
235
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
236
223
self.server_state_changed)
237
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self.server_state_changed(self.server.GetState())
238
225
241
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"""A representation of a client host served by this server.
242
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243
230
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
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
247
245
checker: subprocess.Popen(); a running checker process used
248
246
to see if the client lives.
249
247
'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
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
253
253
runtime with vars(self) as dict, so that for
254
254
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
255
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
256
"""
275
257
276
runtime_expansions = ("approval_delay", "approval_duration",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
279
"last_enabled", "name", "timeout")
280
281
258
@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))
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
287
264
288
265
def timeout_milliseconds(self):
289
266
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
267
return self._datetime_to_milliseconds(self.timeout)
291
268
292
269
def interval_milliseconds(self):
293
270
"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)
271
return self._datetime_to_milliseconds(self.interval)
298
272
299
273
def __init__(self, name = None, disable_hook=None, config=None):
300
274
"""Note: the 'checker' key in 'config' sets the
303
277
self.name = name
304
278
if config is None:
305
279
config = {}
306
logger.debug("Creating client %r", self.name)
280
logger.debug(u"Creating client %r", self.name)
307
281
# Uppercase and remove spaces from fingerprint for later
308
282
# comparison purposes with return value from the fingerprint()
309
283
# 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:
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
319
293
self.secret = secfile.read()
320
294
else:
321
raise TypeError("No secret or secfile for client %s"
295
raise TypeError(u"No secret or secfile for client %s"
322
296
% self.name)
323
self.host = config.get("host", "")
297
self.host = config.get(u"host", u"")
324
298
self.created = datetime.datetime.utcnow()
325
299
self.enabled = False
326
self.last_approval_request = None
327
300
self.last_enabled = None
328
301
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
331
304
self.disable_hook = disable_hook
332
305
self.checker = None
333
306
self.checker_initiator_tag = None
334
307
self.disable_initiator_tag = None
335
308
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
309
self.checker_command = config[u"checker"]
337
310
self.current_checker_command = None
338
311
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
312
349
def send_changedstate(self):
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
354
313
def enable(self):
355
314
"""Start this client's checker and timeout hooks"""
356
if getattr(self, "enabled", False):
357
# Already enabled
358
return
359
self.send_changedstate()
360
315
self.last_enabled = datetime.datetime.utcnow()
361
316
# Schedule a new checker to be started an 'interval' from now,
362
317
# and every interval from then on.
363
318
self.checker_initiator_tag = (gobject.timeout_add
364
319
(self.interval_milliseconds(),
365
320
self.start_checker))
321
# Also start a new checker *right now*.
322
self.start_checker()
366
323
# Schedule a disable() when 'timeout' has passed
367
324
self.disable_initiator_tag = (gobject.timeout_add
368
325
(self.timeout_milliseconds(),
369
326
self.disable))
370
327
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
373
328
374
def disable(self, quiet=True):
329
def disable(self):
375
330
"""Disable this client."""
376
331
if not getattr(self, "enabled", False):
377
332
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):
333
logger.info(u"Disabling client %s", self.name)
334
if getattr(self, u"disable_initiator_tag", False):
383
335
gobject.source_remove(self.disable_initiator_tag)
384
336
self.disable_initiator_tag = None
385
if getattr(self, "checker_initiator_tag", False):
337
if getattr(self, u"checker_initiator_tag", False):
386
338
gobject.source_remove(self.checker_initiator_tag)
387
339
self.checker_initiator_tag = None
388
340
self.stop_checker()
403
355
if os.WIFEXITED(condition):
404
356
exitstatus = os.WEXITSTATUS(condition)
405
357
if exitstatus == 0:
406
logger.info("Checker for %(name)s succeeded",
358
logger.info(u"Checker for %(name)s succeeded",
407
359
vars(self))
408
360
self.checked_ok()
409
361
else:
410
logger.info("Checker for %(name)s failed",
362
logger.info(u"Checker for %(name)s failed",
411
363
vars(self))
412
364
else:
413
logger.warning("Checker for %(name)s crashed?",
365
logger.warning(u"Checker for %(name)s crashed?",
414
366
vars(self))
415
367
416
368
def checked_ok(self):
425
377
(self.timeout_milliseconds(),
426
378
self.disable))
427
379
428
def need_approval(self):
429
self.last_approval_request = datetime.datetime.utcnow()
430
431
380
def start_checker(self):
432
381
"""Start a new checker subprocess if one is not running.
433
382
439
388
# client would inevitably timeout, since no checker would get
440
389
# a chance to run to completion. If we instead leave running
441
390
# 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.
391
# than 'timeout' for the client to be declared invalid, which
392
# is as it should be.
444
393
445
394
# If a checker exists, make sure it is not a zombie
446
try:
395
if self.checker is not None:
447
396
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
397
if pid:
454
logger.warning("Checker was a zombie")
398
logger.warning(u"Checker was a zombie")
455
399
gobject.source_remove(self.checker_callback_tag)
456
400
self.checker_callback(pid, status,
457
401
self.current_checker_command)
462
406
command = self.checker_command % self.host
463
407
except TypeError:
464
408
# 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
409
escaped_attrs = dict((key,
410
re.escape(unicode(str(val),
411
errors=
412
u'replace')))
413
for key, val in
414
vars(self).iteritems())
473
415
try:
474
416
command = self.checker_command % escaped_attrs
475
417
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
418
logger.error(u'Could not format string "%s":'
419
u' %s', self.checker_command, error)
478
420
return True # Try again later
479
421
self.current_checker_command = command
480
422
try:
481
logger.info("Starting checker %r for %s",
423
logger.info(u"Starting checker %r for %s",
482
424
command, self.name)
483
425
# We don't need to redirect stdout and stderr, since
484
426
# in normal mode, that is already done by daemon(),
486
428
# always replaced by /dev/null.)
487
429
self.checker = subprocess.Popen(command,
488
430
close_fds=True,
489
shell=True, cwd="/")
431
shell=True, cwd=u"/")
490
432
self.checker_callback_tag = (gobject.child_watch_add
491
433
(self.checker.pid,
492
434
self.checker_callback,
498
440
gobject.source_remove(self.checker_callback_tag)
499
441
self.checker_callback(pid, status, command)
500
442
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
443
logger.error(u"Failed to start subprocess: %s",
502
444
error)
503
445
# Re-run this periodically if run by gobject.timeout_add
504
446
return True
508
450
if self.checker_callback_tag:
509
451
gobject.source_remove(self.checker_callback_tag)
510
452
self.checker_callback_tag = None
511
if getattr(self, "checker", None) is None:
453
if getattr(self, u"checker", None) is None:
512
454
return
513
logger.debug("Stopping checker for %(name)s", vars(self))
455
logger.debug(u"Stopping checker for %(name)s", vars(self))
514
456
try:
515
457
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
458
#os.sleep(0.5)
517
459
#if self.checker.poll() is None:
518
460
# os.kill(self.checker.pid, signal.SIGKILL)
519
461
except OSError, error:
520
462
if error.errno != errno.ESRCH: # No such process
521
463
raise
522
464
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):
465
466
def still_valid(self):
467
"""Has the timeout not yet passed for this client?"""
468
if not getattr(self, u"enabled", False):
469
return False
470
now = datetime.datetime.utcnow()
471
if self.last_checked_ok is None:
472
return now < (self.created + self.timeout)
473
else:
474
return now < (self.last_checked_ok + self.timeout)
475
476
477
class ClientDBus(Client, dbus.service.Object):
714
478
"""A Client class using D-Bus
715
479
716
480
Attributes:
717
481
dbus_object_path: dbus.ObjectPath
718
482
bus: dbus.SystemBus()
719
483
"""
720
721
runtime_expansions = (Client.runtime_expansions
722
+ ("dbus_object_path",))
723
724
484
# dbus.service.Object doesn't use super(), so we can't either.
725
485
726
486
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
728
487
self.bus = bus
729
488
Client.__init__(self, *args, **kwargs)
730
489
# Only now, when this client is initialized, can it show up on
731
490
# the D-Bus
732
client_object_name = unicode(self.name).translate(
733
{ord("."): ord("_"),
734
ord("-"): ord("_")})
735
491
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
492
(u"/clients/"
493
+ self.name.replace(u".", u"_")))
494
dbus.service.Object.__init__(self, self.bus,
495
self.dbus_object_path)
755
496
756
497
@staticmethod
757
498
def _datetime_to_dbus(dt, variant_level=0):
760
501
variant_level=variant_level)
761
502
762
503
def enable(self):
763
oldstate = getattr(self, "enabled", False)
504
oldstate = getattr(self, u"enabled", False)
764
505
r = Client.enable(self)
765
506
if oldstate != self.enabled:
766
507
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
508
self.PropertyChanged(dbus.String(u"enabled"),
768
509
dbus.Boolean(True, variant_level=1))
769
510
self.PropertyChanged(
770
dbus.String("LastEnabled"),
511
dbus.String(u"last_enabled"),
771
512
self._datetime_to_dbus(self.last_enabled,
772
513
variant_level=1))
773
514
return r
774
515
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:
516
def disable(self, signal = True):
517
oldstate = getattr(self, u"enabled", False)
518
r = Client.disable(self)
519
if signal and oldstate != self.enabled:
779
520
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
521
self.PropertyChanged(dbus.String(u"enabled"),
781
522
dbus.Boolean(False, variant_level=1))
782
523
return r
783
524
786
527
self.remove_from_connection()
787
528
except LookupError:
788
529
pass
789
if hasattr(DBusObjectWithProperties, "__del__"):
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
530
if hasattr(dbus.service.Object, u"__del__"):
531
dbus.service.Object.__del__(self, *args, **kwargs)
791
532
Client.__del__(self, *args, **kwargs)
792
533
793
534
def checker_callback(self, pid, condition, command,
795
536
self.checker_callback_tag = None
796
537
self.checker = None
797
538
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
539
self.PropertyChanged(dbus.String(u"checker_running"),
799
540
dbus.Boolean(False, variant_level=1))
800
541
if os.WIFEXITED(condition):
801
542
exitstatus = os.WEXITSTATUS(condition)
816
557
r = Client.checked_ok(self, *args, **kwargs)
817
558
# Emit D-Bus signal
818
559
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
560
dbus.String(u"last_checked_ok"),
820
561
(self._datetime_to_dbus(self.last_checked_ok,
821
562
variant_level=1)))
822
563
return r
823
564
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
565
def start_checker(self, *args, **kwargs):
834
566
old_checker = self.checker
835
567
if self.checker is not None:
843
575
# Emit D-Bus signal
844
576
self.CheckerStarted(self.current_checker_command)
845
577
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
578
dbus.String(u"checker_running"),
847
579
dbus.Boolean(True, variant_level=1))
848
580
return r
849
581
850
582
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
583
old_checker = getattr(self, u"checker", None)
852
584
r = Client.stop_checker(self, *args, **kwargs)
853
585
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
586
and getattr(self, u"checker", None) is None):
587
self.PropertyChanged(dbus.String(u"checker_running"),
856
588
dbus.Boolean(False, variant_level=1))
857
589
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
590
591
## D-Bus methods & signals
592
_interface = u"se.bsnet.fukt.Mandos.Client"
593
594
# CheckedOK - method
595
@dbus.service.method(_interface)
596
def CheckedOK(self):
597
return self.checked_ok()
875
598
876
599
# CheckerCompleted - signal
877
@dbus.service.signal(_interface, signature="nxs")
600
@dbus.service.signal(_interface, signature=u"nxs")
878
601
def CheckerCompleted(self, exitcode, waitstatus, command):
879
602
"D-Bus signal"
880
603
pass
881
604
882
605
# CheckerStarted - signal
883
@dbus.service.signal(_interface, signature="s")
606
@dbus.service.signal(_interface, signature=u"s")
884
607
def CheckerStarted(self, command):
885
608
"D-Bus signal"
886
609
pass
887
610
611
# GetAllProperties - method
612
@dbus.service.method(_interface, out_signature=u"a{sv}")
613
def GetAllProperties(self):
614
"D-Bus method"
615
return dbus.Dictionary({
616
dbus.String(u"name"):
617
dbus.String(self.name, variant_level=1),
618
dbus.String(u"fingerprint"):
619
dbus.String(self.fingerprint, variant_level=1),
620
dbus.String(u"host"):
621
dbus.String(self.host, variant_level=1),
622
dbus.String(u"created"):
623
self._datetime_to_dbus(self.created,
624
variant_level=1),
625
dbus.String(u"last_enabled"):
626
(self._datetime_to_dbus(self.last_enabled,
627
variant_level=1)
628
if self.last_enabled is not None
629
else dbus.Boolean(False, variant_level=1)),
630
dbus.String(u"enabled"):
631
dbus.Boolean(self.enabled, variant_level=1),
632
dbus.String(u"last_checked_ok"):
633
(self._datetime_to_dbus(self.last_checked_ok,
634
variant_level=1)
635
if self.last_checked_ok is not None
636
else dbus.Boolean (False, variant_level=1)),
637
dbus.String(u"timeout"):
638
dbus.UInt64(self.timeout_milliseconds(),
639
variant_level=1),
640
dbus.String(u"interval"):
641
dbus.UInt64(self.interval_milliseconds(),
642
variant_level=1),
643
dbus.String(u"checker"):
644
dbus.String(self.checker_command,
645
variant_level=1),
646
dbus.String(u"checker_running"):
647
dbus.Boolean(self.checker is not None,
648
variant_level=1),
649
dbus.String(u"object_path"):
650
dbus.ObjectPath(self.dbus_object_path,
651
variant_level=1)
652
}, signature=u"sv")
653
654
# IsStillValid - method
655
@dbus.service.method(_interface, out_signature=u"b")
656
def IsStillValid(self):
657
return self.still_valid()
658
888
659
# PropertyChanged - signal
889
@dbus.service.signal(_interface, signature="sv")
660
@dbus.service.signal(_interface, signature=u"sv")
890
661
def PropertyChanged(self, property, value):
891
662
"D-Bus signal"
892
663
pass
893
664
894
# GotSecret - signal
665
# ReceivedSecret - signal
895
666
@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
"""
667
def ReceivedSecret(self):
668
"D-Bus signal"
901
669
pass
902
670
903
671
# Rejected - signal
904
@dbus.service.signal(_interface, signature="s")
905
def Rejected(self, reason):
672
@dbus.service.signal(_interface)
673
def Rejected(self):
906
674
"D-Bus signal"
907
675
pass
908
676
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()
677
# SetChecker - method
678
@dbus.service.method(_interface, in_signature=u"s")
679
def SetChecker(self, checker):
680
"D-Bus setter method"
681
self.checker_command = checker
682
# Emit D-Bus signal
683
self.PropertyChanged(dbus.String(u"checker"),
684
dbus.String(self.checker_command,
685
variant_level=1))
686
687
# SetHost - method
688
@dbus.service.method(_interface, in_signature=u"s")
689
def SetHost(self, host):
690
"D-Bus setter method"
691
self.host = host
692
# Emit D-Bus signal
693
self.PropertyChanged(dbus.String(u"host"),
694
dbus.String(self.host, variant_level=1))
695
696
# SetInterval - method
697
@dbus.service.method(_interface, in_signature=u"t")
698
def SetInterval(self, milliseconds):
699
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
700
# Emit D-Bus signal
701
self.PropertyChanged(dbus.String(u"interval"),
702
(dbus.UInt64(self.interval_milliseconds(),
703
variant_level=1)))
704
705
# SetSecret - method
706
@dbus.service.method(_interface, in_signature=u"ay",
707
byte_arrays=True)
708
def SetSecret(self, secret):
709
"D-Bus setter method"
710
self.secret = str(secret)
711
712
# SetTimeout - method
713
@dbus.service.method(_interface, in_signature=u"t")
714
def SetTimeout(self, milliseconds):
715
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
716
# Emit D-Bus signal
717
self.PropertyChanged(dbus.String(u"timeout"),
718
(dbus.UInt64(self.timeout_milliseconds(),
719
variant_level=1)))
926
720
927
721
# Enable - method
928
722
@dbus.service.method(_interface)
947
741
def StopChecker(self):
948
742
self.stop_checker()
949
743
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
744
del _interface
1137
745
1138
746
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
747
class ClientHandler(socketserver.BaseRequestHandler, object):
1166
748
"""A class to handle client connections.
1167
749
1169
751
Note: This will run in its own forked process."""
1170
752
1171
753
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
754
logger.info(u"TCP connection from: %s",
755
unicode(self.client_address))
756
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
757
# Open IPC pipe to parent process
758
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1178
759
session = (gnutls.connection
1179
760
.ClientSession(self.request,
1180
761
gnutls.connection
1181
762
.X509Credentials()))
1182
763
764
line = self.request.makefile().readline()
765
logger.debug(u"Protocol version: %r", line)
766
try:
767
if int(line.strip().split()[0]) > 1:
768
raise RuntimeError
769
except (ValueError, IndexError, RuntimeError), error:
770
logger.error(u"Unknown protocol version: %s", error)
771
return
772
1183
773
# Note: gnutls.connection.X509Credentials is really a
1184
774
# generic GnuTLS certificate credentials object so long as
1185
775
# no X.509 keys are added to it. Therefore, we can use it
1186
776
# 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"))
777
778
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
779
# u"+AES-256-CBC", u"+SHA1",
780
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
781
# u"+DHE-DSS"))
1192
782
# Use a fallback default, since this MUST be set.
1193
783
priority = self.server.gnutls_priority
1194
784
if priority is None:
1195
priority = "NORMAL"
785
priority = u"NORMAL"
1196
786
(gnutls.library.functions
1197
787
.gnutls_priority_set_direct(session._c_object,
1198
788
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
789
1212
790
try:
1213
791
session.handshake()
1214
792
except gnutls.errors.GNUTLSError, error:
1215
logger.warning("Handshake failed: %s", error)
793
logger.warning(u"Handshake failed: %s", error)
1216
794
# Do not run session.bye() here: the session is not
1217
795
# established. Just abandon the request.
1218
796
return
1219
logger.debug("Handshake succeeded")
1220
1221
approval_required = False
797
logger.debug(u"Handshake succeeded")
1222
798
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()
799
fpr = self.fingerprint(self.peer_certificate(session))
800
except (TypeError, gnutls.errors.GNUTLSError), error:
801
logger.warning(u"Bad certificate: %s", error)
802
session.bye()
803
return
804
logger.debug(u"Fingerprint: %s", fpr)
1309
805
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")
806
for c in self.server.clients:
807
if c.fingerprint == fpr:
808
client = c
809
break
810
else:
811
ipc.write(u"NOTFOUND %s\n" % fpr)
812
session.bye()
813
return
814
# Have to check if client.still_valid(), since it is
815
# possible that the client timed out while establishing
816
# the GnuTLS session.
817
if not client.still_valid():
818
ipc.write(u"INVALID %s\n" % client.name)
819
session.bye()
820
return
821
ipc.write(u"SENDING %s\n" % client.name)
822
sent_size = 0
823
while sent_size < len(client.secret):
824
sent = session.send(client.secret[sent_size:])
825
logger.debug(u"Sent: %d, remaining: %d",
826
sent, len(client.secret)
827
- (sent_size + sent))
828
sent_size += sent
829
session.bye()
1317
830
1318
831
@staticmethod
1319
832
def peer_certificate(session):
1329
842
.gnutls_certificate_get_peers
1330
843
(session._c_object, ctypes.byref(list_size)))
1331
844
if not bool(cert_list) and list_size.value != 0:
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
845
raise gnutls.errors.GNUTLSError(u"error getting peer"
846
u" certificate")
1334
847
if list_size.value == 0:
1335
848
return None
1336
849
cert = cert_list[0]
1362
875
if crtverify.value != 0:
1363
876
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
877
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
878
(u"Verify failed"))
1366
879
# New buffer for the fingerprint
1367
880
buf = ctypes.create_string_buffer(20)
1368
881
buf_len = ctypes.c_size_t()
1375
888
# Convert the buffer to a Python bytestring
1376
889
fpr = ctypes.string_at(buf, buf_len.value)
1377
890
# Convert the bytestring to hexadecimal notation
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
891
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1379
892
return hex_fpr
1380
893
1381
894
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 """
895
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
896
"""Like socketserver.ForkingMixIn, but also pass a pipe.
897
898
Assumes a gobject.MainLoop event loop.
899
"""
1398
900
def process_request(self, request, client_address):
1399
901
"""Overrides and wraps the original process_request().
1400
902
1401
This function creates a new pipe in self.pipe
903
This function creates a new pipe in self.pipe
1402
904
"""
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1404
1405
super(MultiprocessingMixInWithPipe,
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
1406
907
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):
908
os.close(self.pipe[1]) # close write end
909
# Call "handle_ipc" for both data and EOF events
910
gobject.io_add_watch(self.pipe[0],
911
gobject.IO_IN | gobject.IO_HUP,
912
self.handle_ipc)
913
def handle_ipc(source, condition):
1411
914
"""Dummy function; override as necessary"""
1412
raise NotImplementedError
1413
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
915
os.close(source)
916
return False
917
918
919
class IPv6_TCPServer(ForkingMixInWithPipe,
1415
920
socketserver.TCPServer, object):
1416
921
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1417
922
1419
924
enabled: Boolean; whether this server is activated yet
1420
925
interface: None or a network interface name (string)
1421
926
use_ipv6: Boolean; to use IPv6 or not
927
----
928
clients: set of Client objects
929
gnutls_priority GnuTLS priority string
930
use_dbus: Boolean; to emit D-Bus signals or not
1422
931
"""
1423
932
def __init__(self, server_address, RequestHandlerClass,
1424
interface=None, use_ipv6=True):
933
interface=None, use_ipv6=True, clients=None,
934
gnutls_priority=None, use_dbus=True):
935
self.enabled = False
1425
936
self.interface = interface
1426
937
if use_ipv6:
1427
938
self.address_family = socket.AF_INET6
939
self.clients = clients
940
self.use_dbus = use_dbus
941
self.gnutls_priority = gnutls_priority
1428
942
socketserver.TCPServer.__init__(self, server_address,
1429
943
RequestHandlerClass)
1430
944
def server_bind(self):
1433
947
bind to an address or port if they were not specified."""
1434
948
if self.interface is not None:
1435
949
if SO_BINDTODEVICE is None:
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
950
logger.error(u"SO_BINDTODEVICE does not exist;"
951
u" cannot bind to interface %s",
1438
952
self.interface)
1439
953
else:
1440
954
try:
1441
955
self.socket.setsockopt(socket.SOL_SOCKET,
1442
956
SO_BINDTODEVICE,
1443
957
str(self.interface
1444
+ '\0'))
958
+ u'\0'))
1445
959
except socket.error, error:
1446
960
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
961
logger.error(u"No permission to"
962
u" bind to interface %s",
1449
963
self.interface)
1450
964
elif error[0] == errno.ENOPROTOOPT:
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
965
logger.error(u"SO_BINDTODEVICE not available;"
966
u" cannot bind to interface %s",
1453
967
self.interface)
1454
968
else:
1455
969
raise
1457
971
if self.server_address[0] or self.server_address[1]:
1458
972
if not self.server_address[0]:
1459
973
if self.address_family == socket.AF_INET6:
1460
any_address = "::" # in6addr_any
974
any_address = u"::" # in6addr_any
1461
975
else:
1462
976
any_address = socket.INADDR_ANY
1463
977
self.server_address = (any_address,
1472
986
# if_nametoindex
1473
987
# (self.interface))
1474
988
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
989
def server_activate(self):
1501
990
if self.enabled:
1502
991
return socketserver.TCPServer.server_activate(self)
1503
992
def enable(self):
1504
993
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):
994
def handle_ipc(self, source, condition, file_objects={}):
1514
995
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
996
gobject.IO_IN: u"IN", # There is data to read.
997
gobject.IO_OUT: u"OUT", # Data can be written (without
1517
998
# 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
999
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1000
gobject.IO_ERR: u"ERR", # Error condition.
1001
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1521
1002
# broken, usually for pipes and
1522
1003
# sockets).
1523
1004
}
1525
1006
for cond, name in
1526
1007
condition_names.iteritems()
1527
1008
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
1009
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1010
conditions_string)
1011
1012
# Turn the pipe file descriptor into a Python file object
1013
if source not in file_objects:
1014
file_objects[source] = os.fdopen(source, u"r", 1)
1015
1016
# Read a line from the file object
1017
cmdline = file_objects[source].readline()
1018
if not cmdline: # Empty line means end of file
1019
# close the IPC pipe
1020
file_objects[source].close()
1021
del file_objects[source]
1022
1023
# Stop calling this function
1024
return False
1025
1026
logger.debug(u"IPC command: %r", cmdline)
1027
1028
# Parse and act on command
1029
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1030
1031
if cmd == u"NOTFOUND":
1032
logger.warning(u"Client not found for fingerprint: %s",
1033
args)
1034
if self.use_dbus:
1035
# Emit D-Bus signal
1036
mandos_dbus_service.ClientNotFound(args)
1037
elif cmd == u"INVALID":
1038
for client in self.clients:
1039
if client.name == args:
1040
logger.warning(u"Client %s is invalid", args)
1041
if self.use_dbus:
1042
# Emit D-Bus signal
1043
client.Rejected()
1044
break
1045
else:
1046
logger.error(u"Unknown client %s is invalid", args)
1047
elif cmd == u"SENDING":
1048
for client in self.clients:
1049
if client.name == args:
1050
logger.info(u"Sending secret to %s", client.name)
1051
client.checked_ok()
1052
if self.use_dbus:
1053
# Emit D-Bus signal
1054
client.ReceivedSecret()
1055
break
1056
else:
1057
logger.error(u"Sending secret to unknown client %s",
1058
args)
1059
else:
1060
logger.error(u"Unknown IPC command: %r", cmdline)
1061
1062
# Keep calling this function
1580
1063
return True
1581
1064
1582
1065
1583
1066
def string_to_delta(interval):
1584
1067
"""Parse a string and return a datetime.timedelta
1585
1068
1586
>>> string_to_delta('7d')
1069
>>> string_to_delta(u'7d')
1587
1070
datetime.timedelta(7)
1588
>>> string_to_delta('60s')
1071
>>> string_to_delta(u'60s')
1589
1072
datetime.timedelta(0, 60)
1590
>>> string_to_delta('60m')
1073
>>> string_to_delta(u'60m')
1591
1074
datetime.timedelta(0, 3600)
1592
>>> string_to_delta('24h')
1075
>>> string_to_delta(u'24h')
1593
1076
datetime.timedelta(1)
1594
>>> string_to_delta('1w')
1077
>>> string_to_delta(u'1w')
1595
1078
datetime.timedelta(7)
1596
>>> string_to_delta('5m 30s')
1079
>>> string_to_delta(u'5m 30s')
1597
1080
datetime.timedelta(0, 330)
1598
1081
"""
1599
1082
timevalue = datetime.timedelta(0)
1601
1084
try:
1602
1085
suffix = unicode(s[-1])
1603
1086
value = int(s[:-1])
1604
if suffix == "d":
1087
if suffix == u"d":
1605
1088
delta = datetime.timedelta(value)
1606
elif suffix == "s":
1089
elif suffix == u"s":
1607
1090
delta = datetime.timedelta(0, value)
1608
elif suffix == "m":
1091
elif suffix == u"m":
1609
1092
delta = datetime.timedelta(0, 0, 0, 0, value)
1610
elif suffix == "h":
1093
elif suffix == u"h":
1611
1094
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1612
elif suffix == "w":
1095
elif suffix == u"w":
1613
1096
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1614
1097
else:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
1617
raise ValueError(*(e.args))
1098
raise ValueError
1099
except (ValueError, IndexError):
1100
raise ValueError
1618
1101
timevalue += delta
1619
1102
return timevalue
1620
1103
1626
1109
global if_nametoindex
1627
1110
try:
1628
1111
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1112
(ctypes.util.find_library(u"c"))
1630
1113
.if_nametoindex)
1631
1114
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1115
logger.warning(u"Doing if_nametoindex the hard way")
1633
1116
def if_nametoindex(interface):
1634
1117
"Get an interface index the hard way, i.e. using fcntl()"
1635
1118
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1119
with closing(socket.socket()) as s:
1637
1120
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1121
struct.pack(str(u"16s16x"),
1639
1122
interface))
1640
interface_index = struct.unpack(str("I"),
1123
interface_index = struct.unpack(str(u"I"),
1641
1124
ifreq[16:20])[0]
1642
1125
return interface_index
1643
1126
return if_nametoindex(interface)
1651
1134
sys.exit()
1652
1135
os.setsid()
1653
1136
if not nochdir:
1654
os.chdir("/")
1137
os.chdir(u"/")
1655
1138
if os.fork():
1656
1139
sys.exit()
1657
1140
if not noclose:
1659
1142
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1660
1143
if not stat.S_ISCHR(os.fstat(null).st_mode):
1661
1144
raise OSError(errno.ENODEV,
1662
"%s not a character device"
1663
% os.path.devnull)
1145
u"/dev/null not a character device")
1664
1146
os.dup2(null, sys.stdin.fileno())
1665
1147
os.dup2(null, sys.stdout.fileno())
1666
1148
os.dup2(null, sys.stderr.fileno())
1670
1152
1671
1153
def main():
1672
1154
1673
##################################################################
1155
######################################################################
1674
1156
# Parsing of options, both command line and config file
1675
1157
1676
1158
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")
1159
parser.add_option("-i", u"--interface", type=u"string",
1160
metavar="IF", help=u"Bind to interface IF")
1161
parser.add_option("-a", u"--address", type=u"string",
1162
help=u"Address to listen for requests on")
1163
parser.add_option("-p", u"--port", type=u"int",
1164
help=u"Port number to receive requests on")
1165
parser.add_option("--check", action=u"store_true",
1166
help=u"Run self-test")
1167
parser.add_option("--debug", action=u"store_true",
1168
help=u"Debug mode; run in foreground and log to"
1169
u" terminal")
1170
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1171
u" priority string (see GnuTLS documentation)")
1172
parser.add_option("--servicename", type=u"string",
1173
metavar=u"NAME", help=u"Zeroconf service name")
1174
parser.add_option("--configdir", type=u"string",
1175
default=u"/etc/mandos", metavar=u"DIR",
1176
help=u"Directory to search for configuration"
1177
u" files")
1178
parser.add_option("--no-dbus", action=u"store_false",
1179
dest=u"use_dbus", help=u"Do not provide D-Bus"
1180
u" system bus interface")
1181
parser.add_option("--no-ipv6", action=u"store_false",
1182
dest=u"use_ipv6", help=u"Do not use IPv6")
1703
1183
options = parser.parse_args()[0]
1704
1184
1705
1185
if options.check:
1708
1188
sys.exit()
1709
1189
1710
1190
# 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": "",
1191
server_defaults = { u"interface": u"",
1192
u"address": u"",
1193
u"port": u"",
1194
u"debug": u"False",
1195
u"priority":
1196
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1197
u"servicename": u"Mandos",
1198
u"use_dbus": u"True",
1199
u"use_ipv6": u"True",
1721
1200
}
1722
1201
1723
1202
# Parse config file for server-global settings
1724
1203
server_config = configparser.SafeConfigParser(server_defaults)
1725
1204
del server_defaults
1726
1205
server_config.read(os.path.join(options.configdir,
1727
"mandos.conf"))
1206
u"mandos.conf"))
1728
1207
# Convert the SafeConfigParser object to a dict
1729
1208
server_settings = server_config.defaults()
1730
1209
# 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",
1210
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1211
server_settings[option] = server_config.getboolean(u"DEFAULT",
1733
1212
option)
1734
1213
if server_settings["port"]:
1735
server_settings["port"] = server_config.getint("DEFAULT",
1736
"port")
1214
server_settings["port"] = server_config.getint(u"DEFAULT",
1215
u"port")
1737
1216
del server_config
1738
1217
1739
1218
# Override the settings from the config file with command line
1740
1219
# options, if set.
1741
for option in ("interface", "address", "port", "debug",
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
1220
for option in (u"interface", u"address", u"port", u"debug",
1221
u"priority", u"servicename", u"configdir",
1222
u"use_dbus", u"use_ipv6"):
1744
1223
value = getattr(options, option)
1745
1224
if value is not None:
1746
1225
server_settings[option] = value
1754
1233
##################################################################
1755
1234
1756
1235
# 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":
1236
debug = server_settings[u"debug"]
1237
use_dbus = server_settings[u"use_dbus"]
1238
use_ipv6 = server_settings[u"use_ipv6"]
1239
1240
if not debug:
1241
syslogger.setLevel(logging.WARNING)
1242
console.setLevel(logging.WARNING)
1243
1244
if server_settings[u"servicename"] != u"Mandos":
1763
1245
syslogger.setFormatter(logging.Formatter
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
1246
(u'Mandos (%s) [%%(process)d]:'
1247
u' %%(levelname)s: %%(message)s'
1248
% server_settings[u"servicename"]))
1767
1249
1768
1250
# 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",
1251
client_defaults = { u"timeout": u"1h",
1252
u"interval": u"5m",
1253
u"checker": u"fping -q -- %%(host)s",
1254
u"host": u"",
1775
1255
}
1776
1256
client_config = configparser.SafeConfigParser(client_defaults)
1777
client_config.read(os.path.join(server_settings["configdir"],
1778
"clients.conf"))
1257
client_config.read(os.path.join(server_settings[u"configdir"],
1258
u"clients.conf"))
1779
1259
1780
1260
global mandos_dbus_service
1781
1261
mandos_dbus_service = None
1782
1262
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)
1263
clients = set()
1264
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1265
server_settings[u"port"]),
1266
ClientHandler,
1267
interface=
1268
server_settings[u"interface"],
1269
use_ipv6=use_ipv6,
1270
clients=clients,
1271
gnutls_priority=
1272
server_settings[u"priority"],
1273
use_dbus=use_dbus)
1274
pidfilename = u"/var/run/mandos.pid"
1275
try:
1276
pidfile = open(pidfilename, u"w")
1277
except IOError:
1278
logger.error(u"Could not open file %r", pidfilename)
1798
1279
1799
1280
try:
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
1281
uid = pwd.getpwnam(u"_mandos").pw_uid
1282
gid = pwd.getpwnam(u"_mandos").pw_gid
1802
1283
except KeyError:
1803
1284
try:
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
1285
uid = pwd.getpwnam(u"mandos").pw_uid
1286
gid = pwd.getpwnam(u"mandos").pw_gid
1806
1287
except KeyError:
1807
1288
try:
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1289
uid = pwd.getpwnam(u"nobody").pw_uid
1290
gid = pwd.getpwnam(u"nobody").pw_gid
1810
1291
except KeyError:
1811
1292
uid = 65534
1812
1293
gid = 65534
1817
1298
if error[0] != errno.EPERM:
1818
1299
raise error
1819
1300
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
1301
# Enable all possible GnuTLS debugging
1828
1302
if debug:
1829
# Enable all possible GnuTLS debugging
1830
1831
1303
# "Use a log level over 10 to enable all debugging options."
1832
1304
# - GnuTLS manual
1833
1305
gnutls.library.functions.gnutls_global_set_log_level(11)
1834
1306
1835
1307
@gnutls.library.types.gnutls_log_func
1836
1308
def debug_gnutls(level, string):
1837
logger.debug("GnuTLS: %s", string[:-1])
1309
logger.debug(u"GnuTLS: %s", string[:-1])
1838
1310
1839
1311
(gnutls.library.functions
1840
1312
.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
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()
1855
1313
1856
1314
global main_loop
1857
1315
# From the Avahi example code
1860
1318
bus = dbus.SystemBus()
1861
1319
# End of Avahi example code
1862
1320
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
1321
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1871
1322
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1323
service = AvahiService(name = server_settings[u"servicename"],
1324
servicetype = u"_mandos._tcp",
1874
1325
protocol = protocol, bus = bus)
1875
1326
if server_settings["interface"]:
1876
1327
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
1878
1879
global multiprocessing_manager
1880
multiprocessing_manager = multiprocessing.Manager()
1328
(str(server_settings[u"interface"])))
1881
1329
1882
1330
client_class = Client
1883
1331
if use_dbus:
1884
1332
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(
1333
clients.update(set(
1898
1334
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1335
config= dict(client_config.items(section)))
1901
1336
for section in client_config.sections()))
1902
if not tcp_server.clients:
1903
logger.warning("No clients defined")
1337
if not clients:
1338
logger.warning(u"No clients defined")
1339
1340
if debug:
1341
# Redirect stdin so all checkers get /dev/null
1342
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1343
os.dup2(null, sys.stdin.fileno())
1344
if null > 2:
1345
os.close(null)
1346
else:
1347
# No console logging
1348
logger.removeHandler(console)
1349
# Close all input and output, do double fork, etc.
1350
daemon()
1351
1352
try:
1353
with closing(pidfile):
1354
pid = os.getpid()
1355
pidfile.write(str(pid) + "\n")
1356
del pidfile
1357
except IOError:
1358
logger.error(u"Could not write to file %r with PID %d",
1359
pidfilename, pid)
1360
except NameError:
1361
# "pidfile" was never created
1362
pass
1363
del pidfilename
1364
1365
def cleanup():
1366
"Cleanup function; run on exit"
1367
service.cleanup()
1904
1368
1369
while clients:
1370
client = clients.pop()
1371
client.disable_hook = None
1372
client.disable()
1373
1374
atexit.register(cleanup)
1375
1905
1376
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
1377
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
1921
1378
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1922
1379
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1923
1380
1925
1382
class MandosDBusService(dbus.service.Object):
1926
1383
"""A D-Bus proxy object"""
1927
1384
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")
1385
dbus.service.Object.__init__(self, bus, u"/")
1386
_interface = u"se.bsnet.fukt.Mandos"
1387
1388
@dbus.service.signal(_interface, signature=u"oa{sv}")
1389
def ClientAdded(self, objpath, properties):
1390
"D-Bus signal"
1391
pass
1392
1393
@dbus.service.signal(_interface, signature=u"s")
1394
def ClientNotFound(self, fingerprint):
1395
"D-Bus signal"
1396
pass
1397
1398
@dbus.service.signal(_interface, signature=u"os")
1942
1399
def ClientRemoved(self, objpath, name):
1943
1400
"D-Bus signal"
1944
1401
pass
1945
1402
1946
@dbus.service.method(_interface, out_signature="ao")
1403
@dbus.service.method(_interface, out_signature=u"ao")
1947
1404
def GetAllClients(self):
1948
1405
"D-Bus method"
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
1406
return dbus.Array(c.dbus_object_path for c in clients)
1951
1407
1952
1408
@dbus.service.method(_interface,
1953
out_signature="a{oa{sv}}")
1409
out_signature=u"a{oa{sv}}")
1954
1410
def GetAllClientsWithProperties(self):
1955
1411
"D-Bus method"
1956
1412
return dbus.Dictionary(
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
1959
signature="oa{sv}")
1413
((c.dbus_object_path, c.GetAllProperties())
1414
for c in clients),
1415
signature=u"oa{sv}")
1960
1416
1961
@dbus.service.method(_interface, in_signature="o")
1417
@dbus.service.method(_interface, in_signature=u"o")
1962
1418
def RemoveClient(self, object_path):
1963
1419
"D-Bus method"
1964
for c in tcp_server.clients:
1420
for c in clients:
1965
1421
if c.dbus_object_path == object_path:
1966
tcp_server.clients.remove(c)
1422
clients.remove(c)
1967
1423
c.remove_from_connection()
1968
1424
# Don't signal anything except ClientRemoved
1969
c.disable(quiet=True)
1425
c.disable(signal=False)
1970
1426
# Emit D-Bus signal
1971
1427
self.ClientRemoved(object_path, c.name)
1972
1428
return
1973
raise KeyError(object_path)
1429
raise KeyError
1974
1430
1975
1431
del _interface
1976
1432
1977
1433
mandos_dbus_service = MandosDBusService()
1978
1434
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:
1435
for client in clients:
1998
1436
if use_dbus:
1999
1437
# Emit D-Bus signal
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1438
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1439
client.GetAllProperties())
2001
1440
client.enable()
2002
1441
2003
1442
tcp_server.enable()
2006
1445
# Find out what port we got
2007
1446
service.port = tcp_server.socket.getsockname()[1]
2008
1447
if use_ipv6:
2009
logger.info("Now listening on address %r, port %d,"
1448
logger.info(u"Now listening on address %r, port %d,"
2010
1449
" flowinfo %d, scope_id %d"
2011
1450
% tcp_server.socket.getsockname())
2012
1451
else: # IPv4
2013
logger.info("Now listening on address %r, port %d"
1452
logger.info(u"Now listening on address %r, port %d"
2014
1453
% tcp_server.socket.getsockname())
2015
1454
2016
1455
#service.interface = tcp_server.socket.getsockname()[3]
2020
1459
try:
2021
1460
service.activate()
2022
1461
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
1462
logger.critical(u"DBusException: %s", error)
2025
1463
sys.exit(1)
2026
1464
# End of Avahi example code
2027
1465
2030
1468
(tcp_server.handle_request
2031
1469
(*args[2:], **kwargs) or True))
2032
1470
2033
logger.debug("Starting main loop")
1471
logger.debug(u"Starting main loop")
2034
1472
main_loop.run()
2035
1473
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
2037
cleanup()
1474
logger.critical(u"AvahiError: %s", error)
2038
1475
sys.exit(1)
2039
1476
except KeyboardInterrupt:
2040
1477
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()
1478
print >> sys.stderr
1479
logger.debug(u"Server received KeyboardInterrupt")
1480
logger.debug(u"Server exiting")
2046
1481
2047
1482
if __name__ == '__main__':
2048
1483
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0