To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 397
- compare with another revision
- download diff
- download tarball
- view history from revision 397
- Committer: Teddy Hogeborn
- Date: 2009-10-30 16:23:43 UTC
- Revision ID: teddy@fukt.bsnet.se-20091030162343-1p2a8bf3gc084kc9
* plugins.d/password-prompt.c: Use environment variables and prompt
text from cryptsetup 1.1.
* plugins.d/password-prompt.xml (ENVIRONMENT): Document change in
environment variables
used.
text from cryptsetup 1.1.
* plugins.d/password-prompt.xml (ENVIRONMENT): Document change in
environment variables
used.
- files added:
- debian/watch
- files removed:
- debian/mandos-client.config
- files renamed:
- mandos-list => mandos-ctl
- files modified:
- INSTALL
added
removed
mandos
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
14
# Copyright © 2008,2009 Teddy Hogeborn
33
33
34
34
from __future__ import division, with_statement, absolute_import
35
35
36
import SocketServer
36
import SocketServer as socketserver
37
37
import socket
38
from optparse import OptionParser
38
import optparse
39
39
import datetime
40
40
import errno
41
41
import gnutls.crypto
44
44
import gnutls.library.functions
45
45
import gnutls.library.constants
46
46
import gnutls.library.types
47
import ConfigParser
47
import ConfigParser as configparser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
53
52
import subprocess
54
53
import atexit
55
54
import stat
57
56
import logging.handlers
58
57
import pwd
59
58
from contextlib import closing
59
import struct
60
import fcntl
61
import functools
60
62
61
63
import dbus
62
64
import dbus.service
65
67
from dbus.mainloop.glib import DBusGMainLoop
66
68
import ctypes
67
69
import ctypes.util
68
69
version = "1.0.2"
70
71
logger = logging.Logger('mandos')
70
import xml.dom.minidom
71
import inspect
72
73
try:
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
75
except AttributeError:
76
try:
77
from IN import SO_BINDTODEVICE
78
except ImportError:
79
SO_BINDTODEVICE = None
80
81
82
version = "1.0.14"
83
84
logger = logging.Logger(u'mandos')
72
85
syslogger = (logging.handlers.SysLogHandler
73
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
87
address = "/dev/log"))
75
88
syslogger.setFormatter(logging.Formatter
76
('Mandos: %(levelname)s: %(message)s'))
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
77
91
logger.addHandler(syslogger)
78
92
79
93
console = logging.StreamHandler()
80
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
' %(message)s'))
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
82
97
logger.addHandler(console)
83
98
84
99
class AvahiError(Exception):
97
112
98
113
class AvahiService(object):
99
114
"""An Avahi (Zeroconf) service.
115
100
116
Attributes:
101
117
interface: integer; avahi.IF_UNSPEC or an interface index.
102
118
Used to optionally bind to the specified interface.
103
name: string; Example: 'Mandos'
104
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
105
121
See <http://www.dns-sd.org/ServiceTypes.html>
106
122
port: integer; what port to announce
107
123
TXT: list of strings; TXT record for the service
110
126
max_renames: integer; maximum number of renames
111
127
rename_count: integer; counter so we only rename after collisions
112
128
a sensible number of times
129
group: D-Bus Entry Group
130
server: D-Bus Server
131
bus: dbus.SystemBus()
113
132
"""
114
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
134
servicetype = None, port = None, TXT = None,
116
domain = "", host = "", max_renames = 32768):
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
117
137
self.interface = interface
118
138
self.name = name
119
139
self.type = servicetype
123
143
self.host = host
124
144
self.rename_count = 0
125
145
self.max_renames = max_renames
146
self.protocol = protocol
147
self.group = None # our entry group
148
self.server = None
149
self.bus = bus
126
150
def rename(self):
127
151
"""Derived from the Avahi example code"""
128
152
if self.rename_count >= self.max_renames:
130
154
u" after %i retries, exiting.",
131
155
self.rename_count)
132
156
raise AvahiServiceError(u"Too many renames")
133
self.name = server.GetAlternativeServiceName(self.name)
157
self.name = self.server.GetAlternativeServiceName(self.name)
134
158
logger.info(u"Changing Zeroconf service name to %r ...",
135
str(self.name))
159
unicode(self.name))
136
160
syslogger.setFormatter(logging.Formatter
137
('Mandos (%s): %%(levelname)s:'
138
' %%(message)s' % self.name))
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
139
164
self.remove()
140
165
self.add()
141
166
self.rename_count += 1
142
167
def remove(self):
143
168
"""Derived from the Avahi example code"""
144
if group is not None:
145
group.Reset()
169
if self.group is not None:
170
self.group.Reset()
146
171
def add(self):
147
172
"""Derived from the Avahi example code"""
148
global group
149
if group is None:
150
group = dbus.Interface(bus.get_object
151
(avahi.DBUS_NAME,
152
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
group.connect_to_signal('StateChanged',
155
entry_group_state_changed)
173
if self.group is None:
174
self.group = dbus.Interface(
175
self.bus.get_object(avahi.DBUS_NAME,
176
self.server.EntryGroupNew()),
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
156
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
157
service.name, service.type)
158
group.AddService(
159
self.interface, # interface
160
avahi.PROTO_INET6, # protocol
161
dbus.UInt32(0), # flags
162
self.name, self.type,
163
self.domain, self.host,
164
dbus.UInt16(self.port),
165
avahi.string_array_to_txt_array(self.TXT))
166
group.Commit()
167
168
# From the Avahi example code:
169
group = None # our entry group
170
# End of Avahi example code
171
172
173
def _datetime_to_dbus(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus type."""
175
return dbus.String(dt.isoformat(), variant_level=variant_level)
176
177
178
class Client(dbus.service.Object):
182
self.name, self.type)
183
self.group.AddService(
184
self.interface,
185
self.protocol,
186
dbus.UInt32(0), # flags
187
self.name, self.type,
188
self.domain, self.host,
189
dbus.UInt16(self.port),
190
avahi.string_array_to_txt_array(self.TXT))
191
self.group.Commit()
192
def entry_group_state_changed(self, state, error):
193
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
195
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
198
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
200
self.rename()
201
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
203
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
206
def cleanup(self):
207
"""Derived from the Avahi example code"""
208
if self.group is not None:
209
self.group.Free()
210
self.group = None
211
def server_state_changed(self, state):
212
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
216
elif state == avahi.SERVER_RUNNING:
217
self.add()
218
def activate(self):
219
"""Derived from the Avahi example code"""
220
if self.server is None:
221
self.server = dbus.Interface(
222
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
224
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
227
self.server_state_changed(self.server.GetState())
228
229
230
class Client(object):
179
231
"""A representation of a client host served by this server.
232
180
233
Attributes:
181
name: string; from the config file, used in log messages
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
182
236
fingerprint: string (40 or 32 hexadecimal digits); used to
183
237
uniquely identify the client
184
238
secret: bytestring; sent verbatim (over TLS) to client
195
249
to see if the client lives.
196
250
'None' if no process is running.
197
251
checker_initiator_tag: a gobject event source tag, or None
198
disable_initiator_tag: - '' -
252
disable_initiator_tag: - '' -
199
253
checker_callback_tag: - '' -
200
254
checker_command: string; External command which is run to check if
201
255
client lives. %() expansions are done at
202
256
runtime with vars(self) as dict, so that for
203
257
instance %(name)s can be used in the command.
204
use_dbus: bool(); Whether to provide D-Bus interface and signals
205
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
258
current_checker_command: string; current running checker_command
206
259
"""
260
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
267
207
268
def timeout_milliseconds(self):
208
269
"Return the 'timeout' attribute in milliseconds"
209
return ((self.timeout.days * 24 * 60 * 60 * 1000)
210
+ (self.timeout.seconds * 1000)
211
+ (self.timeout.microseconds // 1000))
270
return self._timedelta_to_milliseconds(self.timeout)
212
271
213
272
def interval_milliseconds(self):
214
273
"Return the 'interval' attribute in milliseconds"
215
return ((self.interval.days * 24 * 60 * 60 * 1000)
216
+ (self.interval.seconds * 1000)
217
+ (self.interval.microseconds // 1000))
274
return self._timedelta_to_milliseconds(self.interval)
218
275
219
def __init__(self, name = None, disable_hook=None, config=None,
220
use_dbus=True):
276
def __init__(self, name = None, disable_hook=None, config=None):
221
277
"""Note: the 'checker' key in 'config' sets the
222
278
'checker_command' attribute and *not* the 'checker'
223
279
attribute."""
225
281
if config is None:
226
282
config = {}
227
283
logger.debug(u"Creating client %r", self.name)
228
self.use_dbus = use_dbus
229
if self.use_dbus:
230
self.dbus_object_path = (dbus.ObjectPath
231
("/Mandos/clients/"
232
+ self.name.replace(".", "_")))
233
dbus.service.Object.__init__(self, bus,
234
self.dbus_object_path)
235
284
# Uppercase and remove spaces from fingerprint for later
236
285
# comparison purposes with return value from the fingerprint()
237
286
# function
238
self.fingerprint = (config["fingerprint"].upper()
287
self.fingerprint = (config[u"fingerprint"].upper()
239
288
.replace(u" ", u""))
240
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
241
if "secret" in config:
242
self.secret = config["secret"].decode(u"base64")
243
elif "secfile" in config:
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
244
293
with closing(open(os.path.expanduser
245
294
(os.path.expandvars
246
(config["secfile"])))) as secfile:
295
(config[u"secfile"])),
296
"rb")) as secfile:
247
297
self.secret = secfile.read()
248
298
else:
249
299
raise TypeError(u"No secret or secfile for client %s"
250
300
% self.name)
251
self.host = config.get("host", "")
301
self.host = config.get(u"host", u"")
252
302
self.created = datetime.datetime.utcnow()
253
303
self.enabled = False
254
304
self.last_enabled = None
255
305
self.last_checked_ok = None
256
self.timeout = string_to_delta(config["timeout"])
257
self.interval = string_to_delta(config["interval"])
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
258
308
self.disable_hook = disable_hook
259
309
self.checker = None
260
310
self.checker_initiator_tag = None
261
311
self.disable_initiator_tag = None
262
312
self.checker_callback_tag = None
263
self.checker_command = config["checker"]
313
self.checker_command = config[u"checker"]
314
self.current_checker_command = None
315
self.last_connect = None
264
316
265
317
def enable(self):
266
318
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
320
# Already enabled
321
return
267
322
self.last_enabled = datetime.datetime.utcnow()
268
323
# Schedule a new checker to be started an 'interval' from now,
269
324
# and every interval from then on.
277
332
(self.timeout_milliseconds(),
278
333
self.disable))
279
334
self.enabled = True
280
if self.use_dbus:
281
# Emit D-Bus signals
282
self.PropertyChanged(dbus.String(u"enabled"),
283
dbus.Boolean(True, variant_level=1))
284
self.PropertyChanged(dbus.String(u"last_enabled"),
285
(_datetime_to_dbus(self.last_enabled,
286
variant_level=1)))
287
335
288
336
def disable(self):
289
337
"""Disable this client."""
290
338
if not getattr(self, "enabled", False):
291
339
return False
292
340
logger.info(u"Disabling client %s", self.name)
293
if getattr(self, "disable_initiator_tag", False):
341
if getattr(self, u"disable_initiator_tag", False):
294
342
gobject.source_remove(self.disable_initiator_tag)
295
343
self.disable_initiator_tag = None
296
if getattr(self, "checker_initiator_tag", False):
344
if getattr(self, u"checker_initiator_tag", False):
297
345
gobject.source_remove(self.checker_initiator_tag)
298
346
self.checker_initiator_tag = None
299
347
self.stop_checker()
300
348
if self.disable_hook:
301
349
self.disable_hook(self)
302
350
self.enabled = False
303
if self.use_dbus:
304
# Emit D-Bus signal
305
self.PropertyChanged(dbus.String(u"enabled"),
306
dbus.Boolean(False, variant_level=1))
307
351
# Do not run this again if called by a gobject.timeout_add
308
352
return False
309
353
315
359
"""The checker has completed, so take appropriate actions."""
316
360
self.checker_callback_tag = None
317
361
self.checker = None
318
if self.use_dbus:
319
# Emit D-Bus signal
320
self.PropertyChanged(dbus.String(u"checker_running"),
321
dbus.Boolean(False, variant_level=1))
322
if (os.WIFEXITED(condition)
323
and (os.WEXITSTATUS(condition) == 0)):
324
logger.info(u"Checker for %(name)s succeeded",
325
vars(self))
326
if self.use_dbus:
327
# Emit D-Bus signal
328
self.CheckerCompleted(dbus.Boolean(True),
329
dbus.UInt16(condition),
330
dbus.String(command))
331
self.bump_timeout()
332
elif not os.WIFEXITED(condition):
362
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
366
vars(self))
367
self.checked_ok()
368
else:
369
logger.info(u"Checker for %(name)s failed",
370
vars(self))
371
else:
333
372
logger.warning(u"Checker for %(name)s crashed?",
334
373
vars(self))
335
if self.use_dbus:
336
# Emit D-Bus signal
337
self.CheckerCompleted(dbus.Boolean(False),
338
dbus.UInt16(condition),
339
dbus.String(command))
340
else:
341
logger.info(u"Checker for %(name)s failed",
342
vars(self))
343
if self.use_dbus:
344
# Emit D-Bus signal
345
self.CheckerCompleted(dbus.Boolean(False),
346
dbus.UInt16(condition),
347
dbus.String(command))
348
374
349
def bump_timeout(self):
375
def checked_ok(self):
350
376
"""Bump up the timeout for this client.
377
351
378
This should only be called when the client has been seen,
352
379
alive and well.
353
380
"""
356
383
self.disable_initiator_tag = (gobject.timeout_add
357
384
(self.timeout_milliseconds(),
358
385
self.disable))
359
if self.use_dbus:
360
# Emit D-Bus signal
361
self.PropertyChanged(
362
dbus.String(u"last_checked_ok"),
363
(_datetime_to_dbus(self.last_checked_ok,
364
variant_level=1)))
365
386
366
387
def start_checker(self):
367
388
"""Start a new checker subprocess if one is not running.
389
368
390
If a checker already exists, leave it running and do
369
391
nothing."""
370
392
# The reason for not killing a running checker is that if we
375
397
# checkers alone, the checker would have to take more time
376
398
# than 'timeout' for the client to be declared invalid, which
377
399
# is as it should be.
400
401
# If a checker exists, make sure it is not a zombie
402
try:
403
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
405
if (isinstance(error, OSError)
406
and error.errno != errno.ECHILD):
407
raise error
408
else:
409
if pid:
410
logger.warning(u"Checker was a zombie")
411
gobject.source_remove(self.checker_callback_tag)
412
self.checker_callback(pid, status,
413
self.current_checker_command)
414
# Start a new checker if needed
378
415
if self.checker is None:
379
416
try:
380
417
# In case checker_command has exactly one % operator
381
418
command = self.checker_command % self.host
382
419
except TypeError:
383
420
# Escape attributes for the shell
384
escaped_attrs = dict((key, re.escape(str(val)))
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
385
425
for key, val in
386
426
vars(self).iteritems())
387
427
try:
390
430
logger.error(u'Could not format string "%s":'
391
431
u' %s', self.checker_command, error)
392
432
return True # Try again later
433
self.current_checker_command = command
393
434
try:
394
435
logger.info(u"Starting checker %r for %s",
395
436
command, self.name)
399
440
# always replaced by /dev/null.)
400
441
self.checker = subprocess.Popen(command,
401
442
close_fds=True,
402
shell=True, cwd="/")
403
if self.use_dbus:
404
# Emit D-Bus signal
405
self.CheckerStarted(command)
406
self.PropertyChanged(
407
dbus.String("checker_running"),
408
dbus.Boolean(True, variant_level=1))
443
shell=True, cwd=u"/")
409
444
self.checker_callback_tag = (gobject.child_watch_add
410
445
(self.checker.pid,
411
446
self.checker_callback,
412
447
data=command))
448
# The checker may have completed before the gobject
449
# watch was added. Check for this.
450
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
451
if pid:
452
gobject.source_remove(self.checker_callback_tag)
453
self.checker_callback(pid, status, command)
413
454
except OSError, error:
414
455
logger.error(u"Failed to start subprocess: %s",
415
456
error)
421
462
if self.checker_callback_tag:
422
463
gobject.source_remove(self.checker_callback_tag)
423
464
self.checker_callback_tag = None
424
if getattr(self, "checker", None) is None:
465
if getattr(self, u"checker", None) is None:
425
466
return
426
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
427
468
try:
433
474
if error.errno != errno.ESRCH: # No such process
434
475
raise
435
476
self.checker = None
436
if self.use_dbus:
437
self.PropertyChanged(dbus.String(u"checker_running"),
438
dbus.Boolean(False, variant_level=1))
439
477
440
478
def still_valid(self):
441
479
"""Has the timeout not yet passed for this client?"""
442
if not getattr(self, "enabled", False):
480
if not getattr(self, u"enabled", False):
443
481
return False
444
482
now = datetime.datetime.utcnow()
445
483
if self.last_checked_ok is None:
446
484
return now < (self.created + self.timeout)
447
485
else:
448
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
491
"""Decorators for marking methods of a DBusObjectWithProperties to
492
become properties on the D-Bus.
493
494
The decorated method will be called with no arguments by "Get"
495
and with one argument by "Set".
496
497
The parameters, where they are supported, are the same as
498
dbus.service.method, except there is only "signature", since the
499
type from Get() and the type sent to Set() is the same.
500
"""
501
def decorator(func):
502
func._dbus_is_property = True
503
func._dbus_interface = dbus_interface
504
func._dbus_signature = signature
505
func._dbus_access = access
506
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
508
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
510
return func
511
return decorator
512
513
514
class DBusPropertyException(dbus.exceptions.DBusException):
515
"""A base class for D-Bus property-related exceptions
516
"""
517
def __unicode__(self):
518
return unicode(str(self))
519
520
521
class DBusPropertyAccessException(DBusPropertyException):
522
"""A property's access permissions disallows an operation.
523
"""
524
pass
525
526
527
class DBusPropertyNotFound(DBusPropertyException):
528
"""An attempt was made to access a non-existing property.
529
"""
530
pass
531
532
533
class DBusObjectWithProperties(dbus.service.Object):
534
"""A D-Bus object with properties.
535
536
Classes inheriting from this can use the dbus_service_property
537
decorator to expose methods as D-Bus properties. It exposes the
538
standard Get(), Set(), and GetAll() methods on the D-Bus.
539
"""
540
541
@staticmethod
542
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
544
545
def _get_all_dbus_properties(self):
546
"""Returns a generator of (name, attribute) pairs
547
"""
548
return ((prop._dbus_name, prop)
549
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
551
552
def _get_dbus_property(self, interface_name, property_name):
553
"""Returns a bound method if one exists which is a D-Bus
554
property with the specified name and interface.
555
"""
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
566
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
569
+ property_name)
570
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
573
def Get(self, interface_name, property_name):
574
"""Standard D-Bus property Get() method, see D-Bus standard.
575
"""
576
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
578
raise DBusPropertyAccessException(property_name)
579
value = prop()
580
if not hasattr(value, u"variant_level"):
581
return value
582
return type(value)(value, variant_level=value.variant_level+1)
583
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
585
def Set(self, interface_name, property_name, value):
586
"""Standard D-Bus property Set() method, see D-Bus standard.
587
"""
588
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
590
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
594
prop(value)
595
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
598
def GetAll(self, interface_name):
599
"""Standard D-Bus property GetAll() method, see D-Bus
600
standard.
601
602
Note: Will not include properties with access="write".
603
"""
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
606
if (interface_name
607
and interface_name != prop._dbus_interface):
608
# Interface non-empty but did not match
609
continue
610
# Ignore write-only properties
611
if prop._dbus_access == u"write":
612
continue
613
value = prop()
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
616
continue
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
620
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
623
path_keyword='object_path',
624
connection_keyword='connection')
625
def Introspect(self, object_path, connection):
626
"""Standard D-Bus method, overloaded to insert property tags.
627
"""
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
629
connection)
630
try:
631
document = xml.dom.minidom.parseString(xmlstring)
632
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
637
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
639
for tag in (make_tag(document, name, prop)
640
for name, prop
641
in self._get_all_dbus_properties()
642
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
644
if_tag.appendChild(tag)
645
# Add the names to the return values for the
646
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
661
document.unlink()
662
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
666
return xmlstring
667
668
669
class ClientDBus(Client, DBusObjectWithProperties):
670
"""A Client class using D-Bus
671
672
Attributes:
673
dbus_object_path: dbus.ObjectPath
674
bus: dbus.SystemBus()
675
"""
676
# dbus.service.Object doesn't use super(), so we can't either.
677
678
def __init__(self, bus = None, *args, **kwargs):
679
self.bus = bus
680
Client.__init__(self, *args, **kwargs)
681
# Only now, when this client is initialized, can it show up on
682
# the D-Bus
683
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
686
DBusObjectWithProperties.__init__(self, self.bus,
687
self.dbus_object_path)
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
716
717
def __del__(self, *args, **kwargs):
718
try:
719
self.remove_from_connection()
720
except LookupError:
721
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
Client.__del__(self, *args, **kwargs)
725
726
def checker_callback(self, pid, condition, command,
727
*args, **kwargs):
728
self.checker_callback_tag = None
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
if os.WIFEXITED(condition):
734
exitstatus = os.WEXITSTATUS(condition)
735
# Emit D-Bus signal
736
self.CheckerCompleted(dbus.Int16(exitstatus),
737
dbus.Int64(condition),
738
dbus.String(command))
739
else:
740
# Emit D-Bus signal
741
self.CheckerCompleted(dbus.Int16(-1),
742
dbus.Int64(condition),
743
dbus.String(command))
744
745
return Client.checker_callback(self, pid, condition, command,
746
*args, **kwargs)
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
757
def start_checker(self, *args, **kwargs):
758
old_checker = self.checker
759
if self.checker is not None:
760
old_checker_pid = self.checker.pid
761
else:
762
old_checker_pid = None
763
r = Client.start_checker(self, *args, **kwargs)
764
# Only if new checker process was started
765
if (self.checker is not None
766
and old_checker_pid != self.checker.pid):
767
# Emit D-Bus signal
768
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
449
782
450
783
## D-Bus methods & signals
451
_interface = u"org.mandos_system.Mandos.Client"
784
_interface = u"se.bsnet.fukt.Mandos.Client"
452
785
453
# BumpTimeout - method
454
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
455
BumpTimeout.__name__ = "BumpTimeout"
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
456
790
457
791
# CheckerCompleted - signal
458
@dbus.service.signal(_interface, signature="bqs")
459
def CheckerCompleted(self, success, condition, command):
792
@dbus.service.signal(_interface, signature=u"nxs")
793
def CheckerCompleted(self, exitcode, waitstatus, command):
460
794
"D-Bus signal"
461
795
pass
462
796
463
797
# CheckerStarted - signal
464
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
465
799
def CheckerStarted(self, command):
466
800
"D-Bus signal"
467
801
pass
468
802
469
# GetAllProperties - method
470
@dbus.service.method(_interface, out_signature="a{sv}")
471
def GetAllProperties(self):
472
"D-Bus method"
473
return dbus.Dictionary({
474
dbus.String("name"):
475
dbus.String(self.name, variant_level=1),
476
dbus.String("fingerprint"):
477
dbus.String(self.fingerprint, variant_level=1),
478
dbus.String("host"):
479
dbus.String(self.host, variant_level=1),
480
dbus.String("created"):
481
_datetime_to_dbus(self.created, variant_level=1),
482
dbus.String("last_enabled"):
483
(_datetime_to_dbus(self.last_enabled,
484
variant_level=1)
485
if self.last_enabled is not None
486
else dbus.Boolean(False, variant_level=1)),
487
dbus.String("enabled"):
488
dbus.Boolean(self.enabled, variant_level=1),
489
dbus.String("last_checked_ok"):
490
(_datetime_to_dbus(self.last_checked_ok,
491
variant_level=1)
492
if self.last_checked_ok is not None
493
else dbus.Boolean (False, variant_level=1)),
494
dbus.String("timeout"):
495
dbus.UInt64(self.timeout_milliseconds(),
496
variant_level=1),
497
dbus.String("interval"):
498
dbus.UInt64(self.interval_milliseconds(),
499
variant_level=1),
500
dbus.String("checker"):
501
dbus.String(self.checker_command,
502
variant_level=1),
503
dbus.String("checker_running"):
504
dbus.Boolean(self.checker is not None,
505
variant_level=1),
506
}, signature="sv")
507
508
# IsStillValid - method
509
IsStillValid = (dbus.service.method(_interface, out_signature="b")
510
(still_valid))
511
IsStillValid.__name__ = "IsStillValid"
512
513
803
# PropertyChanged - signal
514
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
515
805
def PropertyChanged(self, property, value):
516
806
"D-Bus signal"
517
807
pass
518
808
519
# SetChecker - method
520
@dbus.service.method(_interface, in_signature="s")
521
def SetChecker(self, checker):
522
"D-Bus setter method"
523
self.checker_command = checker
524
# Emit D-Bus signal
525
self.PropertyChanged(dbus.String(u"checker"),
526
dbus.String(self.checker_command,
527
variant_level=1))
528
529
# SetHost - method
530
@dbus.service.method(_interface, in_signature="s")
531
def SetHost(self, host):
532
"D-Bus setter method"
533
self.host = host
534
# Emit D-Bus signal
535
self.PropertyChanged(dbus.String(u"host"),
536
dbus.String(self.host, variant_level=1))
537
538
# SetInterval - method
539
@dbus.service.method(_interface, in_signature="t")
540
def SetInterval(self, milliseconds):
541
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
542
# Emit D-Bus signal
543
self.PropertyChanged(dbus.String(u"interval"),
544
(dbus.UInt64(self.interval_milliseconds(),
545
variant_level=1)))
546
547
# SetSecret - method
548
@dbus.service.method(_interface, in_signature="ay",
549
byte_arrays=True)
550
def SetSecret(self, secret):
551
"D-Bus setter method"
552
self.secret = str(secret)
553
554
# SetTimeout - method
555
@dbus.service.method(_interface, in_signature="t")
556
def SetTimeout(self, milliseconds):
557
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
558
# Emit D-Bus signal
559
self.PropertyChanged(dbus.String(u"timeout"),
560
(dbus.UInt64(self.timeout_milliseconds(),
561
variant_level=1)))
809
# GotSecret - signal
810
@dbus.service.signal(_interface)
811
def GotSecret(self):
812
"D-Bus signal"
813
pass
814
815
# Rejected - signal
816
@dbus.service.signal(_interface)
817
def Rejected(self):
818
"D-Bus signal"
819
pass
562
820
563
821
# Enable - method
564
Enable = dbus.service.method(_interface)(enable)
565
Enable.__name__ = "Enable"
822
@dbus.service.method(_interface)
823
def Enable(self):
824
"D-Bus method"
825
self.enable()
566
826
567
827
# StartChecker - method
568
828
@dbus.service.method(_interface)
577
837
self.disable()
578
838
579
839
# StopChecker - method
580
StopChecker = dbus.service.method(_interface)(stop_checker)
581
StopChecker.__name__ = "StopChecker"
840
@dbus.service.method(_interface)
841
def StopChecker(self):
842
self.stop_checker()
843
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
847
return dbus.String(self.name)
848
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
852
return dbus.String(self.fingerprint)
853
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
858
if value is None: # get
859
return dbus.String(self.host)
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
881
if value is None: # get
882
return dbus.Boolean(self.enabled)
883
if value:
884
self.enable()
885
else:
886
self.disable()
887
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
892
if value is not None:
893
self.checked_ok()
894
return
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
904
if value is None: # get
905
return dbus.UInt64(self.timeout_milliseconds())
906
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
912
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
934
self.interval = datetime.timedelta(0, 0, 0, value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
939
return
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
950
if value is None: # get
951
return dbus.String(self.checker_command)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
962
if value is None: # get
963
return dbus.Boolean(self.checker is not None)
964
if value:
965
self.start_checker()
966
else:
967
self.stop_checker()
968
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
972
return self.dbus_object_path # is already a dbus.ObjectPath
973
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
978
self.secret = str(value)
582
979
583
980
del _interface
584
981
585
982
586
def peer_certificate(session):
587
"Return the peer's OpenPGP certificate as a bytestring"
588
# If not an OpenPGP certificate...
589
if (gnutls.library.functions
590
.gnutls_certificate_type_get(session._c_object)
591
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
592
# ...do the normal thing
593
return session.peer_certificate
594
list_size = ctypes.c_uint()
595
cert_list = (gnutls.library.functions
596
.gnutls_certificate_get_peers
597
(session._c_object, ctypes.byref(list_size)))
598
if list_size.value == 0:
599
return None
600
cert = cert_list[0]
601
return ctypes.string_at(cert.data, cert.size)
602
603
604
def fingerprint(openpgp):
605
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
606
# New GnuTLS "datum" with the OpenPGP public key
607
datum = (gnutls.library.types
608
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
609
ctypes.POINTER
610
(ctypes.c_ubyte)),
611
ctypes.c_uint(len(openpgp))))
612
# New empty GnuTLS certificate
613
crt = gnutls.library.types.gnutls_openpgp_crt_t()
614
(gnutls.library.functions
615
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
616
# Import the OpenPGP public key into the certificate
617
(gnutls.library.functions
618
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
619
gnutls.library.constants
620
.GNUTLS_OPENPGP_FMT_RAW))
621
# Verify the self signature in the key
622
crtverify = ctypes.c_uint()
623
(gnutls.library.functions
624
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
625
if crtverify.value != 0:
626
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
627
raise gnutls.errors.CertificateSecurityError("Verify failed")
628
# New buffer for the fingerprint
629
buf = ctypes.create_string_buffer(20)
630
buf_len = ctypes.c_size_t()
631
# Get the fingerprint from the certificate into the buffer
632
(gnutls.library.functions
633
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
634
ctypes.byref(buf_len)))
635
# Deinit the certificate
636
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
637
# Convert the buffer to a Python bytestring
638
fpr = ctypes.string_at(buf, buf_len.value)
639
# Convert the bytestring to hexadecimal notation
640
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
641
return hex_fpr
642
643
644
class TCP_handler(SocketServer.BaseRequestHandler, object):
645
"""A TCP request handler class.
646
Instantiated by IPv6_TCPServer for each request to handle it.
983
class ClientHandler(socketserver.BaseRequestHandler, object):
984
"""A class to handle client connections.
985
986
Instantiated once for each connection to handle it.
647
987
Note: This will run in its own forked process."""
648
988
649
989
def handle(self):
650
990
logger.info(u"TCP connection from: %s",
651
991
unicode(self.client_address))
652
session = (gnutls.connection
653
.ClientSession(self.request,
654
gnutls.connection
655
.X509Credentials()))
656
657
line = self.request.makefile().readline()
658
logger.debug(u"Protocol version: %r", line)
659
try:
660
if int(line.strip().split()[0]) > 1:
661
raise RuntimeError
662
except (ValueError, IndexError, RuntimeError), error:
663
logger.error(u"Unknown protocol version: %s", error)
664
return
665
666
# Note: gnutls.connection.X509Credentials is really a generic
667
# GnuTLS certificate credentials object so long as no X.509
668
# keys are added to it. Therefore, we can use it here despite
669
# using OpenPGP certificates.
670
671
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
672
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
673
# "+DHE-DSS"))
674
# Use a fallback default, since this MUST be set.
675
priority = self.server.settings.get("priority", "NORMAL")
676
(gnutls.library.functions
677
.gnutls_priority_set_direct(session._c_object,
678
priority, None))
679
680
try:
681
session.handshake()
682
except gnutls.errors.GNUTLSError, error:
683
logger.warning(u"Handshake failed: %s", error)
684
# Do not run session.bye() here: the session is not
685
# established. Just abandon the request.
686
return
687
try:
688
fpr = fingerprint(peer_certificate(session))
689
except (TypeError, gnutls.errors.GNUTLSError), error:
690
logger.warning(u"Bad certificate: %s", error)
691
session.bye()
692
return
693
logger.debug(u"Fingerprint: %s", fpr)
694
for c in self.server.clients:
695
if c.fingerprint == fpr:
696
client = c
697
break
698
else:
699
logger.warning(u"Client not found for fingerprint: %s",
700
fpr)
701
session.bye()
702
return
703
# Have to check if client.still_valid(), since it is possible
704
# that the client timed out while establishing the GnuTLS
705
# session.
706
if not client.still_valid():
707
logger.warning(u"Client %(name)s is invalid",
708
vars(client))
709
session.bye()
710
return
711
## This won't work here, since we're in a fork.
712
# client.bump_timeout()
713
sent_size = 0
714
while sent_size < len(client.secret):
715
sent = session.send(client.secret[sent_size:])
716
logger.debug(u"Sent: %d, remaining: %d",
717
sent, len(client.secret)
718
- (sent_size + sent))
719
sent_size += sent
720
session.bye()
721
722
723
class IPv6_TCPServer(SocketServer.ForkingMixIn,
724
SocketServer.TCPServer, object):
725
"""IPv6 TCP server. Accepts 'None' as address and/or port.
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
995
session = (gnutls.connection
996
.ClientSession(self.request,
997
gnutls.connection
998
.X509Credentials()))
999
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1009
# Note: gnutls.connection.X509Credentials is really a
1010
# generic GnuTLS certificate credentials object so long as
1011
# no X.509 keys are added to it. Therefore, we can use it
1012
# here despite using OpenPGP certificates.
1013
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1018
# Use a fallback default, since this MUST be set.
1019
priority = self.server.gnutls_priority
1020
if priority is None:
1021
priority = u"NORMAL"
1022
(gnutls.library.functions
1023
.gnutls_priority_set_direct(session._c_object,
1024
priority, None))
1025
1026
try:
1027
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1030
# Do not run session.bye() here: the session is not
1031
# established. Just abandon the request.
1032
return
1033
logger.debug(u"Handshake succeeded")
1034
try:
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1041
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1067
1068
@staticmethod
1069
def peer_certificate(session):
1070
"Return the peer's OpenPGP certificate as a bytestring"
1071
# If not an OpenPGP certificate...
1072
if (gnutls.library.functions
1073
.gnutls_certificate_type_get(session._c_object)
1074
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1075
# ...do the normal thing
1076
return session.peer_certificate
1077
list_size = ctypes.c_uint(1)
1078
cert_list = (gnutls.library.functions
1079
.gnutls_certificate_get_peers
1080
(session._c_object, ctypes.byref(list_size)))
1081
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1084
if list_size.value == 0:
1085
return None
1086
cert = cert_list[0]
1087
return ctypes.string_at(cert.data, cert.size)
1088
1089
@staticmethod
1090
def fingerprint(openpgp):
1091
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1092
# New GnuTLS "datum" with the OpenPGP public key
1093
datum = (gnutls.library.types
1094
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1095
ctypes.POINTER
1096
(ctypes.c_ubyte)),
1097
ctypes.c_uint(len(openpgp))))
1098
# New empty GnuTLS certificate
1099
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1100
(gnutls.library.functions
1101
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1102
# Import the OpenPGP public key into the certificate
1103
(gnutls.library.functions
1104
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1105
gnutls.library.constants
1106
.GNUTLS_OPENPGP_FMT_RAW))
1107
# Verify the self signature in the key
1108
crtverify = ctypes.c_uint()
1109
(gnutls.library.functions
1110
.gnutls_openpgp_crt_verify_self(crt, 0,
1111
ctypes.byref(crtverify)))
1112
if crtverify.value != 0:
1113
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
raise (gnutls.errors.CertificateSecurityError
1115
(u"Verify failed"))
1116
# New buffer for the fingerprint
1117
buf = ctypes.create_string_buffer(20)
1118
buf_len = ctypes.c_size_t()
1119
# Get the fingerprint from the certificate into the buffer
1120
(gnutls.library.functions
1121
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1122
ctypes.byref(buf_len)))
1123
# Deinit the certificate
1124
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1125
# Convert the buffer to a Python bytestring
1126
fpr = ctypes.string_at(buf, buf_len.value)
1127
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1129
return hex_fpr
1130
1131
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1134
def process_request(self, request, client_address):
1135
"""Overrides and wraps the original process_request().
1136
1137
This function creates a new pipe in self.pipe
1138
"""
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1145
"""Dummy function; override as necessary"""
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1150
socketserver.TCPServer, object):
1151
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1152
726
1153
Attributes:
727
settings: Server settings
728
clients: Set() of Client objects
729
1154
enabled: Boolean; whether this server is activated yet
1155
interface: None or a network interface name (string)
1156
use_ipv6: Boolean; to use IPv6 or not
730
1157
"""
731
address_family = socket.AF_INET6
732
def __init__(self, *args, **kwargs):
733
if "settings" in kwargs:
734
self.settings = kwargs["settings"]
735
del kwargs["settings"]
736
if "clients" in kwargs:
737
self.clients = kwargs["clients"]
738
del kwargs["clients"]
739
self.enabled = False
740
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1158
def __init__(self, server_address, RequestHandlerClass,
1159
interface=None, use_ipv6=True):
1160
self.interface = interface
1161
if use_ipv6:
1162
self.address_family = socket.AF_INET6
1163
socketserver.TCPServer.__init__(self, server_address,
1164
RequestHandlerClass)
741
1165
def server_bind(self):
742
1166
"""This overrides the normal server_bind() function
743
1167
to bind to an interface if one was specified, and also NOT to
744
1168
bind to an address or port if they were not specified."""
745
if self.settings["interface"]:
746
# 25 is from /usr/include/asm-i486/socket.h
747
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
748
try:
749
self.socket.setsockopt(socket.SOL_SOCKET,
750
SO_BINDTODEVICE,
751
self.settings["interface"])
752
except socket.error, error:
753
if error[0] == errno.EPERM:
754
logger.error(u"No permission to"
755
u" bind to interface %s",
756
self.settings["interface"])
757
else:
758
raise error
1169
if self.interface is not None:
1170
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1173
self.interface)
1174
else:
1175
try:
1176
self.socket.setsockopt(socket.SOL_SOCKET,
1177
SO_BINDTODEVICE,
1178
str(self.interface
1179
+ u'\0'))
1180
except socket.error, error:
1181
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1184
self.interface)
1185
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1188
self.interface)
1189
else:
1190
raise
759
1191
# Only bind(2) the socket if we really need to.
760
1192
if self.server_address[0] or self.server_address[1]:
761
1193
if not self.server_address[0]:
762
in6addr_any = "::"
763
self.server_address = (in6addr_any,
1194
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
1196
else:
1197
any_address = socket.INADDR_ANY
1198
self.server_address = (any_address,
764
1199
self.server_address[1])
765
1200
elif not self.server_address[1]:
766
1201
self.server_address = (self.server_address[0],
767
1202
0)
768
# if self.settings["interface"]:
1203
# if self.interface:
769
1204
# self.server_address = (self.server_address[0],
770
1205
# 0, # port
771
1206
# 0, # flowinfo
772
1207
# if_nametoindex
773
# (self.settings
774
# ["interface"]))
775
return super(IPv6_TCPServer, self).server_bind()
1208
# (self.interface))
1209
return socketserver.TCPServer.server_bind(self)
1210
1211
1212
class MandosServer(IPv6_TCPServer):
1213
"""Mandos server.
1214
1215
Attributes:
1216
clients: set of Client objects
1217
gnutls_priority GnuTLS priority string
1218
use_dbus: Boolean; to emit D-Bus signals or not
1219
1220
Assumes a gobject.MainLoop event loop.
1221
"""
1222
def __init__(self, server_address, RequestHandlerClass,
1223
interface=None, use_ipv6=True, clients=None,
1224
gnutls_priority=None, use_dbus=True):
1225
self.enabled = False
1226
self.clients = clients
1227
if self.clients is None:
1228
self.clients = set()
1229
self.use_dbus = use_dbus
1230
self.gnutls_priority = gnutls_priority
1231
IPv6_TCPServer.__init__(self, server_address,
1232
RequestHandlerClass,
1233
interface = interface,
1234
use_ipv6 = use_ipv6)
776
1235
def server_activate(self):
777
1236
if self.enabled:
778
return super(IPv6_TCPServer, self).server_activate()
1237
return socketserver.TCPServer.server_activate(self)
779
1238
def enable(self):
780
1239
self.enabled = True
1240
def add_pipe(self, pipe):
1241
# Call "handle_ipc" for both data and EOF events
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1245
condition_names = {
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1248
# blocking).
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1252
# broken, usually for pipes and
1253
# sockets).
1254
}
1255
conditions_string = ' | '.join(name
1256
for cond, name in
1257
condition_names.iteritems()
1258
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
1313
return True
781
1314
782
1315
783
1316
def string_to_delta(interval):
784
1317
"""Parse a string and return a datetime.timedelta
785
786
>>> string_to_delta('7d')
1318
1319
>>> string_to_delta(u'7d')
787
1320
datetime.timedelta(7)
788
>>> string_to_delta('60s')
1321
>>> string_to_delta(u'60s')
789
1322
datetime.timedelta(0, 60)
790
>>> string_to_delta('60m')
1323
>>> string_to_delta(u'60m')
791
1324
datetime.timedelta(0, 3600)
792
>>> string_to_delta('24h')
1325
>>> string_to_delta(u'24h')
793
1326
datetime.timedelta(1)
794
1327
>>> string_to_delta(u'1w')
795
1328
datetime.timedelta(7)
796
>>> string_to_delta('5m 30s')
1329
>>> string_to_delta(u'5m 30s')
797
1330
datetime.timedelta(0, 330)
798
1331
"""
799
1332
timevalue = datetime.timedelta(0)
819
1352
return timevalue
820
1353
821
1354
822
def server_state_changed(state):
823
"""Derived from the Avahi example code"""
824
if state == avahi.SERVER_COLLISION:
825
logger.error(u"Zeroconf server name collision")
826
service.remove()
827
elif state == avahi.SERVER_RUNNING:
828
service.add()
829
830
831
def entry_group_state_changed(state, error):
832
"""Derived from the Avahi example code"""
833
logger.debug(u"Avahi state change: %i", state)
834
835
if state == avahi.ENTRY_GROUP_ESTABLISHED:
836
logger.debug(u"Zeroconf service established.")
837
elif state == avahi.ENTRY_GROUP_COLLISION:
838
logger.warning(u"Zeroconf service name collision.")
839
service.rename()
840
elif state == avahi.ENTRY_GROUP_FAILURE:
841
logger.critical(u"Avahi: Error in group state changed %s",
842
unicode(error))
843
raise AvahiGroupError(u"State changed: %s" % unicode(error))
844
845
1355
def if_nametoindex(interface):
846
"""Call the C function if_nametoindex(), or equivalent"""
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
847
1359
global if_nametoindex
848
1360
try:
849
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
850
(ctypes.util.find_library("c"))
1362
(ctypes.util.find_library(u"c"))
851
1363
.if_nametoindex)
852
1364
except (OSError, AttributeError):
853
if "struct" not in sys.modules:
854
import struct
855
if "fcntl" not in sys.modules:
856
import fcntl
1365
logger.warning(u"Doing if_nametoindex the hard way")
857
1366
def if_nametoindex(interface):
858
1367
"Get an interface index the hard way, i.e. using fcntl()"
859
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
860
1369
with closing(socket.socket()) as s:
861
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
862
struct.pack("16s16x", interface))
863
interface_index = struct.unpack("I", ifreq[16:20])[0]
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
864
1375
return interface_index
865
1376
return if_nametoindex(interface)
866
1377
867
1378
868
1379
def daemon(nochdir = False, noclose = False):
869
1380
"""See daemon(3). Standard BSD Unix function.
1381
870
1382
This should really exist as os.daemon, but it doesn't (yet)."""
871
1383
if os.fork():
872
1384
sys.exit()
873
1385
os.setsid()
874
1386
if not nochdir:
875
os.chdir("/")
1387
os.chdir(u"/")
876
1388
if os.fork():
877
1389
sys.exit()
878
1390
if not noclose:
880
1392
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
881
1393
if not stat.S_ISCHR(os.fstat(null).st_mode):
882
1394
raise OSError(errno.ENODEV,
883
"/dev/null not a character device")
1395
u"%s not a character device"
1396
% os.path.devnull)
884
1397
os.dup2(null, sys.stdin.fileno())
885
1398
os.dup2(null, sys.stdout.fileno())
886
1399
os.dup2(null, sys.stderr.fileno())
889
1402
890
1403
891
1404
def main():
892
parser = OptionParser(version = "%%prog %s" % version)
893
parser.add_option("-i", "--interface", type="string",
894
metavar="IF", help="Bind to interface IF")
895
parser.add_option("-a", "--address", type="string",
896
help="Address to listen for requests on")
897
parser.add_option("-p", "--port", type="int",
898
help="Port number to receive requests on")
899
parser.add_option("--check", action="store_true",
900
help="Run self-test")
901
parser.add_option("--debug", action="store_true",
902
help="Debug mode; run in foreground and log to"
903
" terminal")
904
parser.add_option("--priority", type="string", help="GnuTLS"
905
" priority string (see GnuTLS documentation)")
906
parser.add_option("--servicename", type="string", metavar="NAME",
907
help="Zeroconf service name")
908
parser.add_option("--configdir", type="string",
909
default="/etc/mandos", metavar="DIR",
910
help="Directory to search for configuration"
911
" files")
912
parser.add_option("--no-dbus", action="store_false",
913
dest="use_dbus",
914
help="Do not provide D-Bus system bus"
915
" interface")
1405
1406
##################################################################
1407
# Parsing of options, both command line and config file
1408
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
916
1434
options = parser.parse_args()[0]
917
1435
918
1436
if options.check:
921
1439
sys.exit()
922
1440
923
1441
# Default values for config file for server-global settings
924
server_defaults = { "interface": "",
925
"address": "",
926
"port": "",
927
"debug": "False",
928
"priority":
929
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
930
"servicename": "Mandos",
931
"use_dbus": "True",
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
932
1451
}
933
1452
934
1453
# Parse config file for server-global settings
935
server_config = ConfigParser.SafeConfigParser(server_defaults)
1454
server_config = configparser.SafeConfigParser(server_defaults)
936
1455
del server_defaults
937
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1456
server_config.read(os.path.join(options.configdir,
1457
u"mandos.conf"))
938
1458
# Convert the SafeConfigParser object to a dict
939
1459
server_settings = server_config.defaults()
940
# Use getboolean on the boolean config options
941
server_settings["debug"] = (server_config.getboolean
942
("DEFAULT", "debug"))
943
server_settings["use_dbus"] = (server_config.getboolean
944
("DEFAULT", "use_dbus"))
1460
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
1463
option)
1464
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
945
1467
del server_config
946
1468
947
1469
# Override the settings from the config file with command line
948
1470
# options, if set.
949
for option in ("interface", "address", "port", "debug",
950
"priority", "servicename", "configdir",
951
"use_dbus"):
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
952
1474
value = getattr(options, option)
953
1475
if value is not None:
954
1476
server_settings[option] = value
955
1477
del options
1478
# Force all strings to be unicode
1479
for option in server_settings.keys():
1480
if type(server_settings[option]) is str:
1481
server_settings[option] = unicode(server_settings[option])
956
1482
# Now we have our good server settings in "server_settings"
957
1483
1484
##################################################################
1485
958
1486
# For convenience
959
debug = server_settings["debug"]
960
use_dbus = server_settings["use_dbus"]
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
961
1490
962
1491
if not debug:
963
1492
syslogger.setLevel(logging.WARNING)
964
1493
console.setLevel(logging.WARNING)
965
1494
966
if server_settings["servicename"] != "Mandos":
1495
if server_settings[u"servicename"] != u"Mandos":
967
1496
syslogger.setFormatter(logging.Formatter
968
('Mandos (%s): %%(levelname)s:'
969
' %%(message)s'
970
% server_settings["servicename"]))
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
971
1500
972
1501
# Parse config file with clients
973
client_defaults = { "timeout": "1h",
974
"interval": "5m",
975
"checker": "fping -q -- %(host)s",
976
"host": "",
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
977
1506
}
978
client_config = ConfigParser.SafeConfigParser(client_defaults)
979
client_config.read(os.path.join(server_settings["configdir"],
980
"clients.conf"))
981
982
clients = Set()
983
tcp_server = IPv6_TCPServer((server_settings["address"],
984
server_settings["port"]),
985
TCP_handler,
986
settings=server_settings,
987
clients=clients)
988
pidfilename = "/var/run/mandos.pid"
989
try:
990
pidfile = open(pidfilename, "w")
991
except IOError, error:
992
logger.error("Could not open file %r", pidfilename)
993
994
try:
995
uid = pwd.getpwnam("_mandos").pw_uid
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
1510
1511
global mandos_dbus_service
1512
mandos_dbus_service = None
1513
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
1516
ClientHandler,
1517
interface=server_settings[u"interface"],
1518
use_ipv6=use_ipv6,
1519
gnutls_priority=
1520
server_settings[u"priority"],
1521
use_dbus=use_dbus)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
1527
1528
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
996
1531
except KeyError:
997
1532
try:
998
uid = pwd.getpwnam("mandos").pw_uid
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
999
1535
except KeyError:
1000
1536
try:
1001
uid = pwd.getpwnam("nobody").pw_uid
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1002
1539
except KeyError:
1003
1540
uid = 65534
1004
try:
1005
gid = pwd.getpwnam("_mandos").pw_gid
1006
except KeyError:
1007
try:
1008
gid = pwd.getpwnam("mandos").pw_gid
1009
except KeyError:
1010
try:
1011
gid = pwd.getpwnam("nogroup").pw_gid
1012
except KeyError:
1013
1541
gid = 65534
1014
1542
try:
1543
os.setgid(gid)
1015
1544
os.setuid(uid)
1016
os.setgid(gid)
1017
1545
except OSError, error:
1018
1546
if error[0] != errno.EPERM:
1019
1547
raise error
1020
1548
1021
global service
1022
service = AvahiService(name = server_settings["servicename"],
1023
servicetype = "_mandos._tcp", )
1024
if server_settings["interface"]:
1025
service.interface = (if_nametoindex
1026
(server_settings["interface"]))
1549
# Enable all possible GnuTLS debugging
1550
if debug:
1551
# "Use a log level over 10 to enable all debugging options."
1552
# - GnuTLS manual
1553
gnutls.library.functions.gnutls_global_set_log_level(11)
1554
1555
@gnutls.library.types.gnutls_log_func
1556
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
1558
1559
(gnutls.library.functions
1560
.gnutls_global_set_log_function(debug_gnutls))
1027
1561
1028
1562
global main_loop
1029
global bus
1030
global server
1031
1563
# From the Avahi example code
1032
1564
DBusGMainLoop(set_as_default=True )
1033
1565
main_loop = gobject.MainLoop()
1034
1566
bus = dbus.SystemBus()
1035
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1036
avahi.DBUS_PATH_SERVER),
1037
avahi.DBUS_INTERFACE_SERVER)
1038
1567
# End of Avahi example code
1039
1568
if use_dbus:
1040
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos",
1041
bus)
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1570
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
1574
if server_settings["interface"]:
1575
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
1042
1577
1043
clients.update(Set(Client(name = section,
1044
config
1045
= dict(client_config.items(section)),
1046
use_dbus = use_dbus)
1047
for section in client_config.sections()))
1048
if not clients:
1578
client_class = Client
1579
if use_dbus:
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
1585
if not tcp_server.clients:
1049
1586
logger.warning(u"No clients defined")
1050
1587
1051
1588
if debug:
1061
1598
daemon()
1062
1599
1063
1600
try:
1064
pid = os.getpid()
1065
pidfile.write(str(pid) + "\n")
1066
pidfile.close()
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1067
1604
del pidfile
1068
1605
except IOError:
1069
1606
logger.error(u"Could not write to file %r with PID %d",
1075
1612
1076
1613
def cleanup():
1077
1614
"Cleanup function; run on exit"
1078
global group
1079
# From the Avahi example code
1080
if not group is None:
1081
group.Free()
1082
group = None
1083
# End of Avahi example code
1615
service.cleanup()
1084
1616
1085
while clients:
1086
client = clients.pop()
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1087
1619
client.disable_hook = None
1088
1620
client.disable()
1089
1621
1095
1627
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1096
1628
1097
1629
if use_dbus:
1098
class MandosServer(dbus.service.Object):
1630
class MandosDBusService(dbus.service.Object):
1099
1631
"""A D-Bus proxy object"""
1100
1632
def __init__(self):
1101
dbus.service.Object.__init__(self, bus,
1102
"/Mandos")
1103
_interface = u"org.mandos_system.Mandos"
1104
1105
@dbus.service.signal(_interface, signature="oa{sv}")
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1106
1637
def ClientAdded(self, objpath, properties):
1107
1638
"D-Bus signal"
1108
1639
pass
1109
1110
@dbus.service.signal(_interface, signature="o")
1111
def ClientRemoved(self, objpath):
1112
"D-Bus signal"
1113
pass
1114
1115
@dbus.service.method(_interface, out_signature="ao")
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
1647
def ClientRemoved(self, objpath, name):
1648
"D-Bus signal"
1649
pass
1650
1651
@dbus.service.method(_interface, out_signature=u"ao")
1116
1652
def GetAllClients(self):
1117
return dbus.Array(c.dbus_object_path for c in clients)
1118
1119
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1653
"D-Bus method"
1654
return dbus.Array(c.dbus_object_path
1655
for c in tcp_server.clients)
1656
1657
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
1120
1659
def GetAllClientsWithProperties(self):
1660
"D-Bus method"
1121
1661
return dbus.Dictionary(
1122
((c.dbus_object_path, c.GetAllProperties())
1123
for c in clients),
1124
signature="oa{sv}")
1125
1126
@dbus.service.method(_interface, in_signature="o")
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
1665
1666
@dbus.service.method(_interface, in_signature=u"o")
1127
1667
def RemoveClient(self, object_path):
1128
for c in clients:
1668
"D-Bus method"
1669
for c in tcp_server.clients:
1129
1670
if c.dbus_object_path == object_path:
1130
clients.remove(c)
1671
tcp_server.clients.remove(c)
1672
c.remove_from_connection()
1131
1673
# Don't signal anything except ClientRemoved
1132
c.use_dbus = False
1133
c.disable()
1674
c.disable(signal=False)
1134
1675
# Emit D-Bus signal
1135
self.ClientRemoved(object_path)
1676
self.ClientRemoved(object_path, c.name)
1136
1677
return
1137
1678
raise KeyError
1138
@dbus.service.method(_interface)
1139
def Quit(self):
1140
main_loop.quit()
1141
1679
1142
1680
del _interface
1143
1144
mandos_server = MandosServer()
1145
1146
for client in clients:
1681
1682
mandos_dbus_service = MandosDBusService()
1683
1684
for client in tcp_server.clients:
1147
1685
if use_dbus:
1148
1686
# Emit D-Bus signal
1149
mandos_server.ClientAdded(client.dbus_object_path,
1150
client.GetAllProperties())
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1151
1689
client.enable()
1152
1690
1153
1691
tcp_server.enable()
1155
1693
1156
1694
# Find out what port we got
1157
1695
service.port = tcp_server.socket.getsockname()[1]
1158
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1159
u" scope_id %d" % tcp_server.socket.getsockname())
1696
if use_ipv6:
1697
logger.info(u"Now listening on address %r, port %d,"
1698
" flowinfo %d, scope_id %d"
1699
% tcp_server.socket.getsockname())
1700
else: # IPv4
1701
logger.info(u"Now listening on address %r, port %d"
1702
% tcp_server.socket.getsockname())
1160
1703
1161
1704
#service.interface = tcp_server.socket.getsockname()[3]
1162
1705
1163
1706
try:
1164
1707
# From the Avahi example code
1165
server.connect_to_signal("StateChanged", server_state_changed)
1166
1708
try:
1167
server_state_changed(server.GetState())
1709
service.activate()
1168
1710
except dbus.exceptions.DBusException, error:
1169
1711
logger.critical(u"DBusException: %s", error)
1170
1712
sys.exit(1)
1182
1724
sys.exit(1)
1183
1725
except KeyboardInterrupt:
1184
1726
if debug:
1185
print
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
1186
1730
1187
1731
if __name__ == '__main__':
1188
1732
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0