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- Committer: Teddy Hogeborn
- Date: 2009-01-18 00:16:57 UTC
- Revision ID: teddy@fukt.bsnet.se-20090118001657-6mo3ae73ldy5tegf
* debian/mandos-client.postinst: Converted to Bourne shell. Also
minor message change.
* debian/mandos-client.postrm: Minor message change.
* debian/mandos.postinst: Converted to Bourne shell. Also minor
message change.
* debian/mandos.prerm: Minor message change.
minor message change.
* debian/mandos-client.postrm: Minor message change.
* debian/mandos.postinst: Converted to Bourne shell. Also minor
message change.
* debian/mandos.prerm: Minor message change.
- 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", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
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".
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 as socketserver
36
import SocketServer
37
37
import socket
38
38
import optparse
39
39
import datetime
44
44
import gnutls.library.functions
45
45
import gnutls.library.constants
46
46
import gnutls.library.types
47
import ConfigParser as configparser
47
import ConfigParser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
52
53
import subprocess
53
54
import atexit
54
55
import stat
56
57
import logging.handlers
57
58
import pwd
58
59
from contextlib import closing
59
import struct
60
import fcntl
61
import functools
62
60
63
61
import dbus
64
62
import dbus.service
67
65
from dbus.mainloop.glib import DBusGMainLoop
68
66
import ctypes
69
67
import ctypes.util
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 = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
68
69
version = "1.0.5"
70
71
logger = logging.Logger('mandos')
85
72
syslogger = (logging.handlers.SysLogHandler
86
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
74
address = "/dev/log"))
88
75
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
76
('Mandos: %(levelname)s: %(message)s'))
91
77
logger.addHandler(syslogger)
92
78
93
79
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
80
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
' %(message)s'))
97
82
logger.addHandler(console)
98
83
99
84
class AvahiError(Exception):
112
97
113
98
class AvahiService(object):
114
99
"""An Avahi (Zeroconf) service.
115
116
100
Attributes:
117
101
interface: integer; avahi.IF_UNSPEC or an interface index.
118
102
Used to optionally bind to the specified interface.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
103
name: string; Example: 'Mandos'
104
type: string; Example: '_mandos._tcp'.
121
105
See <http://www.dns-sd.org/ServiceTypes.html>
122
106
port: integer; what port to announce
123
107
TXT: list of strings; TXT record for the service
126
110
max_renames: integer; maximum number of renames
127
111
rename_count: integer; counter so we only rename after collisions
128
112
a sensible number of times
129
group: D-Bus Entry Group
130
server: D-Bus Server
131
bus: dbus.SystemBus()
132
113
"""
133
114
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
115
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
116
domain = "", host = "", max_renames = 32768):
137
117
self.interface = interface
138
118
self.name = name
139
119
self.type = servicetype
143
123
self.host = host
144
124
self.rename_count = 0
145
125
self.max_renames = max_renames
146
self.protocol = protocol
147
self.group = None # our entry group
148
self.server = None
149
self.bus = bus
150
126
def rename(self):
151
127
"""Derived from the Avahi example code"""
152
128
if self.rename_count >= self.max_renames:
154
130
u" after %i retries, exiting.",
155
131
self.rename_count)
156
132
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
133
self.name = server.GetAlternativeServiceName(self.name)
158
134
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
135
str(self.name))
160
136
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
137
('Mandos (%s): %%(levelname)s:'
138
' %%(message)s' % self.name))
164
139
self.remove()
165
140
self.add()
166
141
self.rename_count += 1
167
142
def remove(self):
168
143
"""Derived from the Avahi example code"""
169
if self.group is not None:
170
self.group.Reset()
144
if group is not None:
145
group.Reset()
171
146
def add(self):
172
147
"""Derived from the Avahi example code"""
173
if self.group is None:
174
self.group = dbus.Interface(
175
self.bus.get_object(avahi.DBUS_NAME,
176
self.server.EntryGroupNew()),
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
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)
181
156
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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):
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):
231
179
"""A representation of a client host served by this server.
232
233
180
Attributes:
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
181
name: string; from the config file, used in log messages
236
182
fingerprint: string (40 or 32 hexadecimal digits); used to
237
183
uniquely identify the client
238
184
secret: bytestring; sent verbatim (over TLS) to client
249
195
to see if the client lives.
250
196
'None' if no process is running.
251
197
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
198
disable_initiator_tag: - '' -
253
199
checker_callback_tag: - '' -
254
200
checker_command: string; External command which is run to check if
255
201
client lives. %() expansions are done at
256
202
runtime with vars(self) as dict, so that for
257
203
instance %(name)s can be used in the command.
258
current_checker_command: string; current running checker_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
259
206
"""
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
268
207
def timeout_milliseconds(self):
269
208
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
209
return ((self.timeout.days * 24 * 60 * 60 * 1000)
210
+ (self.timeout.seconds * 1000)
211
+ (self.timeout.microseconds // 1000))
271
212
272
213
def interval_milliseconds(self):
273
214
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
215
return ((self.interval.days * 24 * 60 * 60 * 1000)
216
+ (self.interval.seconds * 1000)
217
+ (self.interval.microseconds // 1000))
275
218
276
def __init__(self, name = None, disable_hook=None, config=None):
219
def __init__(self, name = None, disable_hook=None, config=None,
220
use_dbus=True):
277
221
"""Note: the 'checker' key in 'config' sets the
278
222
'checker_command' attribute and *not* the 'checker'
279
223
attribute."""
281
225
if config is None:
282
226
config = {}
283
227
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)
284
235
# Uppercase and remove spaces from fingerprint for later
285
236
# comparison purposes with return value from the fingerprint()
286
237
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
238
self.fingerprint = (config["fingerprint"].upper()
288
239
.replace(u" ", u""))
289
240
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
241
if "secret" in config:
242
self.secret = config["secret"].decode(u"base64")
243
elif "secfile" in config:
293
244
with closing(open(os.path.expanduser
294
245
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
246
(config["secfile"])))) as secfile:
296
247
self.secret = secfile.read()
297
248
else:
298
249
raise TypeError(u"No secret or secfile for client %s"
299
250
% self.name)
300
self.host = config.get(u"host", u"")
251
self.host = config.get("host", "")
301
252
self.created = datetime.datetime.utcnow()
302
253
self.enabled = False
303
254
self.last_enabled = None
304
255
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
256
self.timeout = string_to_delta(config["timeout"])
257
self.interval = string_to_delta(config["interval"])
307
258
self.disable_hook = disable_hook
308
259
self.checker = None
309
260
self.checker_initiator_tag = None
310
261
self.disable_initiator_tag = None
311
262
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
313
self.current_checker_command = None
314
self.last_connect = None
263
self.checker_command = config["checker"]
315
264
316
265
def enable(self):
317
266
"""Start this client's checker and timeout hooks"""
318
if getattr(self, u"enabled", False):
319
# Already enabled
320
return
321
267
self.last_enabled = datetime.datetime.utcnow()
322
268
# Schedule a new checker to be started an 'interval' from now,
323
269
# and every interval from then on.
331
277
(self.timeout_milliseconds(),
332
278
self.disable))
333
279
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)))
334
287
335
288
def disable(self):
336
289
"""Disable this client."""
337
290
if not getattr(self, "enabled", False):
338
291
return False
339
292
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
293
if getattr(self, "disable_initiator_tag", False):
341
294
gobject.source_remove(self.disable_initiator_tag)
342
295
self.disable_initiator_tag = None
343
if getattr(self, u"checker_initiator_tag", False):
296
if getattr(self, "checker_initiator_tag", False):
344
297
gobject.source_remove(self.checker_initiator_tag)
345
298
self.checker_initiator_tag = None
346
299
self.stop_checker()
347
300
if self.disable_hook:
348
301
self.disable_hook(self)
349
302
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))
350
307
# Do not run this again if called by a gobject.timeout_add
351
308
return False
352
309
358
315
"""The checker has completed, so take appropriate actions."""
359
316
self.checker_callback_tag = None
360
317
self.checker = None
361
if os.WIFEXITED(condition):
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
365
vars(self))
366
self.checked_ok()
367
else:
368
logger.info(u"Checker for %(name)s failed",
369
vars(self))
370
else:
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):
371
333
logger.warning(u"Checker for %(name)s crashed?",
372
334
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))
373
348
374
def checked_ok(self):
349
def bump_timeout(self):
375
350
"""Bump up the timeout for this client.
376
377
351
This should only be called when the client has been seen,
378
352
alive and well.
379
353
"""
382
356
self.disable_initiator_tag = (gobject.timeout_add
383
357
(self.timeout_milliseconds(),
384
358
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)))
385
365
386
366
def start_checker(self):
387
367
"""Start a new checker subprocess if one is not running.
388
389
368
If a checker already exists, leave it running and do
390
369
nothing."""
391
370
# The reason for not killing a running checker is that if we
396
375
# checkers alone, the checker would have to take more time
397
376
# than 'timeout' for the client to be declared invalid, which
398
377
# is as it should be.
399
400
# If a checker exists, make sure it is not a zombie
401
try:
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
403
except (AttributeError, OSError), error:
404
if (isinstance(error, OSError)
405
and error.errno != errno.ECHILD):
406
raise error
407
else:
408
if pid:
409
logger.warning(u"Checker was a zombie")
410
gobject.source_remove(self.checker_callback_tag)
411
self.checker_callback(pid, status,
412
self.current_checker_command)
413
# Start a new checker if needed
414
378
if self.checker is None:
415
379
try:
416
380
# In case checker_command has exactly one % operator
417
381
command = self.checker_command % self.host
418
382
except TypeError:
419
383
# Escape attributes for the shell
420
escaped_attrs = dict((key,
421
re.escape(unicode(str(val),
422
errors=
423
u'replace')))
384
escaped_attrs = dict((key, re.escape(str(val)))
424
385
for key, val in
425
386
vars(self).iteritems())
426
387
try:
429
390
logger.error(u'Could not format string "%s":'
430
391
u' %s', self.checker_command, error)
431
392
return True # Try again later
432
self.current_checker_command = command
433
393
try:
434
394
logger.info(u"Starting checker %r for %s",
435
395
command, self.name)
439
399
# always replaced by /dev/null.)
440
400
self.checker = subprocess.Popen(command,
441
401
close_fds=True,
442
shell=True, cwd=u"/")
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
409
self.checker_callback_tag = (gobject.child_watch_add
444
410
(self.checker.pid,
445
411
self.checker_callback,
446
412
data=command))
447
# The checker may have completed before the gobject
448
# watch was added. Check for this.
449
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
450
if pid:
451
gobject.source_remove(self.checker_callback_tag)
452
self.checker_callback(pid, status, command)
453
413
except OSError, error:
454
414
logger.error(u"Failed to start subprocess: %s",
455
415
error)
461
421
if self.checker_callback_tag:
462
422
gobject.source_remove(self.checker_callback_tag)
463
423
self.checker_callback_tag = None
464
if getattr(self, u"checker", None) is None:
424
if getattr(self, "checker", None) is None:
465
425
return
466
426
logger.debug(u"Stopping checker for %(name)s", vars(self))
467
427
try:
473
433
if error.errno != errno.ESRCH: # No such process
474
434
raise
475
435
self.checker = None
436
if self.use_dbus:
437
self.PropertyChanged(dbus.String(u"checker_running"),
438
dbus.Boolean(False, variant_level=1))
476
439
477
440
def still_valid(self):
478
441
"""Has the timeout not yet passed for this client?"""
479
if not getattr(self, u"enabled", False):
442
if not getattr(self, "enabled", False):
480
443
return False
481
444
now = datetime.datetime.utcnow()
482
445
if self.last_checked_ok is None:
483
446
return now < (self.created + self.timeout)
484
447
else:
485
448
return now < (self.last_checked_ok + self.timeout)
486
487
488
def dbus_service_property(dbus_interface, signature=u"v",
489
access=u"readwrite", byte_arrays=False):
490
"""Decorators for marking methods of a DBusObjectWithProperties to
491
become properties on the D-Bus.
492
493
The decorated method will be called with no arguments by "Get"
494
and with one argument by "Set".
495
496
The parameters, where they are supported, are the same as
497
dbus.service.method, except there is only "signature", since the
498
type from Get() and the type sent to Set() is the same.
499
"""
500
def decorator(func):
501
func._dbus_is_property = True
502
func._dbus_interface = dbus_interface
503
func._dbus_signature = signature
504
func._dbus_access = access
505
func._dbus_name = func.__name__
506
if func._dbus_name.endswith(u"_dbus_property"):
507
func._dbus_name = func._dbus_name[:-14]
508
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
509
return func
510
return decorator
511
512
513
class DBusPropertyException(dbus.exceptions.DBusException):
514
"""A base class for D-Bus property-related exceptions
515
"""
516
def __unicode__(self):
517
return unicode(str(self))
518
519
520
class DBusPropertyAccessException(DBusPropertyException):
521
"""A property's access permissions disallows an operation.
522
"""
523
pass
524
525
526
class DBusPropertyNotFound(DBusPropertyException):
527
"""An attempt was made to access a non-existing property.
528
"""
529
pass
530
531
532
class DBusObjectWithProperties(dbus.service.Object):
533
"""A D-Bus object with properties.
534
535
Classes inheriting from this can use the dbus_service_property
536
decorator to expose methods as D-Bus properties. It exposes the
537
standard Get(), Set(), and GetAll() methods on the D-Bus.
538
"""
539
540
@staticmethod
541
def _is_dbus_property(obj):
542
return getattr(obj, u"_dbus_is_property", False)
543
544
def _get_all_dbus_properties(self):
545
"""Returns a generator of (name, attribute) pairs
546
"""
547
return ((prop._dbus_name, prop)
548
for name, prop in
549
inspect.getmembers(self, self._is_dbus_property))
550
551
def _get_dbus_property(self, interface_name, property_name):
552
"""Returns a bound method if one exists which is a D-Bus
553
property with the specified name and interface.
554
"""
555
for name in (property_name,
556
property_name + u"_dbus_property"):
557
prop = getattr(self, name, None)
558
if (prop is None
559
or not self._is_dbus_property(prop)
560
or prop._dbus_name != property_name
561
or (interface_name and prop._dbus_interface
562
and interface_name != prop._dbus_interface)):
563
continue
564
return prop
565
# No such property
566
raise DBusPropertyNotFound(self.dbus_object_path + u":"
567
+ interface_name + u"."
568
+ property_name)
569
570
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
571
out_signature=u"v")
572
def Get(self, interface_name, property_name):
573
"""Standard D-Bus property Get() method, see D-Bus standard.
574
"""
575
prop = self._get_dbus_property(interface_name, property_name)
576
if prop._dbus_access == u"write":
577
raise DBusPropertyAccessException(property_name)
578
value = prop()
579
if not hasattr(value, u"variant_level"):
580
return value
581
return type(value)(value, variant_level=value.variant_level+1)
582
583
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
584
def Set(self, interface_name, property_name, value):
585
"""Standard D-Bus property Set() method, see D-Bus standard.
586
"""
587
prop = self._get_dbus_property(interface_name, property_name)
588
if prop._dbus_access == u"read":
589
raise DBusPropertyAccessException(property_name)
590
if prop._dbus_get_args_options[u"byte_arrays"]:
591
value = dbus.ByteArray(''.join(unichr(byte)
592
for byte in value))
593
prop(value)
594
595
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
596
out_signature=u"a{sv}")
597
def GetAll(self, interface_name):
598
"""Standard D-Bus property GetAll() method, see D-Bus
599
standard.
600
601
Note: Will not include properties with access="write".
602
"""
603
all = {}
604
for name, prop in self._get_all_dbus_properties():
605
if (interface_name
606
and interface_name != prop._dbus_interface):
607
# Interface non-empty but did not match
608
continue
609
# Ignore write-only properties
610
if prop._dbus_access == u"write":
611
continue
612
value = prop()
613
if not hasattr(value, u"variant_level"):
614
all[name] = value
615
continue
616
all[name] = type(value)(value, variant_level=
617
value.variant_level+1)
618
return dbus.Dictionary(all, signature=u"sv")
619
620
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
621
out_signature=u"s",
622
path_keyword='object_path',
623
connection_keyword='connection')
624
def Introspect(self, object_path, connection):
625
"""Standard D-Bus method, overloaded to insert property tags.
626
"""
627
xmlstring = dbus.service.Object.Introspect(self, object_path,
628
connection)
629
document = xml.dom.minidom.parseString(xmlstring)
630
del xmlstring
631
def make_tag(document, name, prop):
632
e = document.createElement(u"property")
633
e.setAttribute(u"name", name)
634
e.setAttribute(u"type", prop._dbus_signature)
635
e.setAttribute(u"access", prop._dbus_access)
636
return e
637
for if_tag in document.getElementsByTagName(u"interface"):
638
for tag in (make_tag(document, name, prop)
639
for name, prop
640
in self._get_all_dbus_properties()
641
if prop._dbus_interface
642
== if_tag.getAttribute(u"name")):
643
if_tag.appendChild(tag)
644
xmlstring = document.toxml(u"utf-8")
645
document.unlink()
646
return xmlstring
647
648
649
class ClientDBus(Client, DBusObjectWithProperties):
650
"""A Client class using D-Bus
651
652
Attributes:
653
dbus_object_path: dbus.ObjectPath
654
bus: dbus.SystemBus()
655
"""
656
# dbus.service.Object doesn't use super(), so we can't either.
657
658
def __init__(self, bus = None, *args, **kwargs):
659
self.bus = bus
660
Client.__init__(self, *args, **kwargs)
661
# Only now, when this client is initialized, can it show up on
662
# the D-Bus
663
self.dbus_object_path = (dbus.ObjectPath
664
(u"/clients/"
665
+ self.name.replace(u".", u"_")))
666
DBusObjectWithProperties.__init__(self, self.bus,
667
self.dbus_object_path)
668
669
@staticmethod
670
def _datetime_to_dbus(dt, variant_level=0):
671
"""Convert a UTC datetime.datetime() to a D-Bus type."""
672
return dbus.String(dt.isoformat(),
673
variant_level=variant_level)
674
675
def enable(self):
676
oldstate = getattr(self, u"enabled", False)
677
r = Client.enable(self)
678
if oldstate != self.enabled:
679
# Emit D-Bus signals
680
self.PropertyChanged(dbus.String(u"enabled"),
681
dbus.Boolean(True, variant_level=1))
682
self.PropertyChanged(
683
dbus.String(u"last_enabled"),
684
self._datetime_to_dbus(self.last_enabled,
685
variant_level=1))
686
return r
687
688
def disable(self, signal = True):
689
oldstate = getattr(self, u"enabled", False)
690
r = Client.disable(self)
691
if signal and oldstate != self.enabled:
692
# Emit D-Bus signal
693
self.PropertyChanged(dbus.String(u"enabled"),
694
dbus.Boolean(False, variant_level=1))
695
return r
696
697
def __del__(self, *args, **kwargs):
698
try:
699
self.remove_from_connection()
700
except LookupError:
701
pass
702
if hasattr(DBusObjectWithProperties, u"__del__"):
703
DBusObjectWithProperties.__del__(self, *args, **kwargs)
704
Client.__del__(self, *args, **kwargs)
705
706
def checker_callback(self, pid, condition, command,
707
*args, **kwargs):
708
self.checker_callback_tag = None
709
self.checker = None
710
# Emit D-Bus signal
711
self.PropertyChanged(dbus.String(u"checker_running"),
712
dbus.Boolean(False, variant_level=1))
713
if os.WIFEXITED(condition):
714
exitstatus = os.WEXITSTATUS(condition)
715
# Emit D-Bus signal
716
self.CheckerCompleted(dbus.Int16(exitstatus),
717
dbus.Int64(condition),
718
dbus.String(command))
719
else:
720
# Emit D-Bus signal
721
self.CheckerCompleted(dbus.Int16(-1),
722
dbus.Int64(condition),
723
dbus.String(command))
724
725
return Client.checker_callback(self, pid, condition, command,
726
*args, **kwargs)
727
728
def checked_ok(self, *args, **kwargs):
729
r = Client.checked_ok(self, *args, **kwargs)
730
# Emit D-Bus signal
731
self.PropertyChanged(
732
dbus.String(u"last_checked_ok"),
733
(self._datetime_to_dbus(self.last_checked_ok,
734
variant_level=1)))
735
return r
736
737
def start_checker(self, *args, **kwargs):
738
old_checker = self.checker
739
if self.checker is not None:
740
old_checker_pid = self.checker.pid
741
else:
742
old_checker_pid = None
743
r = Client.start_checker(self, *args, **kwargs)
744
# Only if new checker process was started
745
if (self.checker is not None
746
and old_checker_pid != self.checker.pid):
747
# Emit D-Bus signal
748
self.CheckerStarted(self.current_checker_command)
749
self.PropertyChanged(
750
dbus.String(u"checker_running"),
751
dbus.Boolean(True, variant_level=1))
752
return r
753
754
def stop_checker(self, *args, **kwargs):
755
old_checker = getattr(self, u"checker", None)
756
r = Client.stop_checker(self, *args, **kwargs)
757
if (old_checker is not None
758
and getattr(self, u"checker", None) is None):
759
self.PropertyChanged(dbus.String(u"checker_running"),
760
dbus.Boolean(False, variant_level=1))
761
return r
762
449
763
450
## D-Bus methods & signals
764
_interface = u"se.bsnet.fukt.Mandos.Client"
451
_interface = u"org.mandos_system.Mandos.Client"
765
452
766
# CheckedOK - method
767
@dbus.service.method(_interface)
768
def CheckedOK(self):
769
return self.checked_ok()
453
# BumpTimeout - method
454
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
455
BumpTimeout.__name__ = "BumpTimeout"
770
456
771
457
# CheckerCompleted - signal
772
@dbus.service.signal(_interface, signature=u"nxs")
773
def CheckerCompleted(self, exitcode, waitstatus, command):
458
@dbus.service.signal(_interface, signature="bqs")
459
def CheckerCompleted(self, success, condition, command):
774
460
"D-Bus signal"
775
461
pass
776
462
777
463
# CheckerStarted - signal
778
@dbus.service.signal(_interface, signature=u"s")
464
@dbus.service.signal(_interface, signature="s")
779
465
def CheckerStarted(self, command):
780
466
"D-Bus signal"
781
467
pass
782
468
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
783
513
# PropertyChanged - signal
784
@dbus.service.signal(_interface, signature=u"sv")
514
@dbus.service.signal(_interface, signature="sv")
785
515
def PropertyChanged(self, property, value):
786
516
"D-Bus signal"
787
517
pass
788
518
789
# ReceivedSecret - signal
790
@dbus.service.signal(_interface)
791
def ReceivedSecret(self):
792
"D-Bus signal"
793
pass
794
795
# Rejected - signal
796
@dbus.service.signal(_interface)
797
def Rejected(self):
798
"D-Bus signal"
799
pass
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)))
800
562
801
563
# Enable - method
802
@dbus.service.method(_interface)
803
def Enable(self):
804
"D-Bus method"
805
self.enable()
564
Enable = dbus.service.method(_interface)(enable)
565
Enable.__name__ = "Enable"
806
566
807
567
# StartChecker - method
808
568
@dbus.service.method(_interface)
817
577
self.disable()
818
578
819
579
# StopChecker - method
820
@dbus.service.method(_interface)
821
def StopChecker(self):
822
self.stop_checker()
823
824
# name - property
825
@dbus_service_property(_interface, signature=u"s", access=u"read")
826
def name_dbus_property(self):
827
return dbus.String(self.name)
828
829
# fingerprint - property
830
@dbus_service_property(_interface, signature=u"s", access=u"read")
831
def fingerprint_dbus_property(self):
832
return dbus.String(self.fingerprint)
833
834
# host - property
835
@dbus_service_property(_interface, signature=u"s",
836
access=u"readwrite")
837
def host_dbus_property(self, value=None):
838
if value is None: # get
839
return dbus.String(self.host)
840
self.host = value
841
# Emit D-Bus signal
842
self.PropertyChanged(dbus.String(u"host"),
843
dbus.String(value, variant_level=1))
844
845
# created - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def created_dbus_property(self):
848
return dbus.String(self._datetime_to_dbus(self.created))
849
850
# last_enabled - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def last_enabled_dbus_property(self):
853
if self.last_enabled is None:
854
return dbus.String(u"")
855
return dbus.String(self._datetime_to_dbus(self.last_enabled))
856
857
# enabled - property
858
@dbus_service_property(_interface, signature=u"b",
859
access=u"readwrite")
860
def enabled_dbus_property(self, value=None):
861
if value is None: # get
862
return dbus.Boolean(self.enabled)
863
if value:
864
self.enable()
865
else:
866
self.disable()
867
868
# last_checked_ok - property
869
@dbus_service_property(_interface, signature=u"s",
870
access=u"readwrite")
871
def last_checked_ok_dbus_property(self, value=None):
872
if value is not None:
873
self.checked_ok()
874
return
875
if self.last_checked_ok is None:
876
return dbus.String(u"")
877
return dbus.String(self._datetime_to_dbus(self
878
.last_checked_ok))
879
880
# timeout - property
881
@dbus_service_property(_interface, signature=u"t",
882
access=u"readwrite")
883
def timeout_dbus_property(self, value=None):
884
if value is None: # get
885
return dbus.UInt64(self.timeout_milliseconds())
886
self.timeout = datetime.timedelta(0, 0, 0, value)
887
# Emit D-Bus signal
888
self.PropertyChanged(dbus.String(u"timeout"),
889
dbus.UInt64(value, variant_level=1))
890
if getattr(self, u"disable_initiator_tag", None) is None:
891
return
892
# Reschedule timeout
893
gobject.source_remove(self.disable_initiator_tag)
894
self.disable_initiator_tag = None
895
time_to_die = (self.
896
_timedelta_to_milliseconds((self
897
.last_checked_ok
898
+ self.timeout)
899
- datetime.datetime
900
.utcnow()))
901
if time_to_die <= 0:
902
# The timeout has passed
903
self.disable()
904
else:
905
self.disable_initiator_tag = (gobject.timeout_add
906
(time_to_die, self.disable))
907
908
# interval - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
def interval_dbus_property(self, value=None):
912
if value is None: # get
913
return dbus.UInt64(self.interval_milliseconds())
914
self.interval = datetime.timedelta(0, 0, 0, value)
915
# Emit D-Bus signal
916
self.PropertyChanged(dbus.String(u"interval"),
917
dbus.UInt64(value, variant_level=1))
918
if getattr(self, u"checker_initiator_tag", None) is None:
919
return
920
# Reschedule checker run
921
gobject.source_remove(self.checker_initiator_tag)
922
self.checker_initiator_tag = (gobject.timeout_add
923
(value, self.start_checker))
924
self.start_checker() # Start one now, too
925
926
# checker - property
927
@dbus_service_property(_interface, signature=u"s",
928
access=u"readwrite")
929
def checker_dbus_property(self, value=None):
930
if value is None: # get
931
return dbus.String(self.checker_command)
932
self.checker_command = value
933
# Emit D-Bus signal
934
self.PropertyChanged(dbus.String(u"checker"),
935
dbus.String(self.checker_command,
936
variant_level=1))
937
938
# checker_running - property
939
@dbus_service_property(_interface, signature=u"b",
940
access=u"readwrite")
941
def checker_running_dbus_property(self, value=None):
942
if value is None: # get
943
return dbus.Boolean(self.checker is not None)
944
if value:
945
self.start_checker()
946
else:
947
self.stop_checker()
948
949
# object_path - property
950
@dbus_service_property(_interface, signature=u"o", access=u"read")
951
def object_path_dbus_property(self):
952
return self.dbus_object_path # is already a dbus.ObjectPath
953
954
# secret = property
955
@dbus_service_property(_interface, signature=u"ay",
956
access=u"write", byte_arrays=True)
957
def secret_dbus_property(self, value):
958
self.secret = str(value)
580
StopChecker = dbus.service.method(_interface)(stop_checker)
581
StopChecker.__name__ = "StopChecker"
959
582
960
583
del _interface
961
584
962
585
963
class ClientHandler(socketserver.BaseRequestHandler, object):
964
"""A class to handle client connections.
965
966
Instantiated once for each connection to handle it.
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.
967
647
Note: This will run in its own forked process."""
968
648
969
649
def handle(self):
970
650
logger.info(u"TCP connection from: %s",
971
651
unicode(self.client_address))
972
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
973
# Open IPC pipe to parent process
974
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
975
session = (gnutls.connection
976
.ClientSession(self.request,
977
gnutls.connection
978
.X509Credentials()))
979
980
line = self.request.makefile().readline()
981
logger.debug(u"Protocol version: %r", line)
982
try:
983
if int(line.strip().split()[0]) > 1:
984
raise RuntimeError
985
except (ValueError, IndexError, RuntimeError), error:
986
logger.error(u"Unknown protocol version: %s", error)
987
return
988
989
# Note: gnutls.connection.X509Credentials is really a
990
# generic GnuTLS certificate credentials object so long as
991
# no X.509 keys are added to it. Therefore, we can use it
992
# here despite using OpenPGP certificates.
993
994
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
995
# u"+AES-256-CBC", u"+SHA1",
996
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
997
# u"+DHE-DSS"))
998
# Use a fallback default, since this MUST be set.
999
priority = self.server.gnutls_priority
1000
if priority is None:
1001
priority = u"NORMAL"
1002
(gnutls.library.functions
1003
.gnutls_priority_set_direct(session._c_object,
1004
priority, None))
1005
1006
try:
1007
session.handshake()
1008
except gnutls.errors.GNUTLSError, error:
1009
logger.warning(u"Handshake failed: %s", error)
1010
# Do not run session.bye() here: the session is not
1011
# established. Just abandon the request.
1012
return
1013
logger.debug(u"Handshake succeeded")
1014
try:
1015
fpr = self.fingerprint(self.peer_certificate(session))
1016
except (TypeError, gnutls.errors.GNUTLSError), error:
1017
logger.warning(u"Bad certificate: %s", error)
1018
session.bye()
1019
return
1020
logger.debug(u"Fingerprint: %s", fpr)
1021
1022
for c in self.server.clients:
1023
if c.fingerprint == fpr:
1024
client = c
1025
break
1026
else:
1027
ipc.write(u"NOTFOUND %s %s\n"
1028
% (fpr, unicode(self.client_address)))
1029
session.bye()
1030
return
1031
# Have to check if client.still_valid(), since it is
1032
# possible that the client timed out while establishing
1033
# the GnuTLS session.
1034
if not client.still_valid():
1035
ipc.write(u"INVALID %s\n" % client.name)
1036
session.bye()
1037
return
1038
ipc.write(u"SENDING %s\n" % client.name)
1039
sent_size = 0
1040
while sent_size < len(client.secret):
1041
sent = session.send(client.secret[sent_size:])
1042
logger.debug(u"Sent: %d, remaining: %d",
1043
sent, len(client.secret)
1044
- (sent_size + sent))
1045
sent_size += sent
1046
session.bye()
1047
1048
@staticmethod
1049
def peer_certificate(session):
1050
"Return the peer's OpenPGP certificate as a bytestring"
1051
# If not an OpenPGP certificate...
1052
if (gnutls.library.functions
1053
.gnutls_certificate_type_get(session._c_object)
1054
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1055
# ...do the normal thing
1056
return session.peer_certificate
1057
list_size = ctypes.c_uint(1)
1058
cert_list = (gnutls.library.functions
1059
.gnutls_certificate_get_peers
1060
(session._c_object, ctypes.byref(list_size)))
1061
if not bool(cert_list) and list_size.value != 0:
1062
raise gnutls.errors.GNUTLSError(u"error getting peer"
1063
u" certificate")
1064
if list_size.value == 0:
1065
return None
1066
cert = cert_list[0]
1067
return ctypes.string_at(cert.data, cert.size)
1068
1069
@staticmethod
1070
def fingerprint(openpgp):
1071
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1072
# New GnuTLS "datum" with the OpenPGP public key
1073
datum = (gnutls.library.types
1074
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1075
ctypes.POINTER
1076
(ctypes.c_ubyte)),
1077
ctypes.c_uint(len(openpgp))))
1078
# New empty GnuTLS certificate
1079
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1080
(gnutls.library.functions
1081
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1082
# Import the OpenPGP public key into the certificate
1083
(gnutls.library.functions
1084
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1085
gnutls.library.constants
1086
.GNUTLS_OPENPGP_FMT_RAW))
1087
# Verify the self signature in the key
1088
crtverify = ctypes.c_uint()
1089
(gnutls.library.functions
1090
.gnutls_openpgp_crt_verify_self(crt, 0,
1091
ctypes.byref(crtverify)))
1092
if crtverify.value != 0:
1093
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1094
raise (gnutls.errors.CertificateSecurityError
1095
(u"Verify failed"))
1096
# New buffer for the fingerprint
1097
buf = ctypes.create_string_buffer(20)
1098
buf_len = ctypes.c_size_t()
1099
# Get the fingerprint from the certificate into the buffer
1100
(gnutls.library.functions
1101
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1102
ctypes.byref(buf_len)))
1103
# Deinit the certificate
1104
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1105
# Convert the buffer to a Python bytestring
1106
fpr = ctypes.string_at(buf, buf_len.value)
1107
# Convert the bytestring to hexadecimal notation
1108
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1109
return hex_fpr
1110
1111
1112
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1113
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1114
def process_request(self, request, client_address):
1115
"""Overrides and wraps the original process_request().
1116
1117
This function creates a new pipe in self.pipe
1118
"""
1119
self.pipe = os.pipe()
1120
super(ForkingMixInWithPipe,
1121
self).process_request(request, client_address)
1122
os.close(self.pipe[1]) # close write end
1123
self.add_pipe(self.pipe[0])
1124
def add_pipe(self, pipe):
1125
"""Dummy function; override as necessary"""
1126
os.close(pipe)
1127
1128
1129
class IPv6_TCPServer(ForkingMixInWithPipe,
1130
socketserver.TCPServer, object):
1131
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1132
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.
1133
726
Attributes:
727
settings: Server settings
728
clients: Set() of Client objects
1134
729
enabled: Boolean; whether this server is activated yet
1135
interface: None or a network interface name (string)
1136
use_ipv6: Boolean; to use IPv6 or not
1137
730
"""
1138
def __init__(self, server_address, RequestHandlerClass,
1139
interface=None, use_ipv6=True):
1140
self.interface = interface
1141
if use_ipv6:
1142
self.address_family = socket.AF_INET6
1143
socketserver.TCPServer.__init__(self, server_address,
1144
RequestHandlerClass)
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)
1145
741
def server_bind(self):
1146
742
"""This overrides the normal server_bind() function
1147
743
to bind to an interface if one was specified, and also NOT to
1148
744
bind to an address or port if they were not specified."""
1149
if self.interface is not None:
1150
if SO_BINDTODEVICE is None:
1151
logger.error(u"SO_BINDTODEVICE does not exist;"
1152
u" cannot bind to interface %s",
1153
self.interface)
1154
else:
1155
try:
1156
self.socket.setsockopt(socket.SOL_SOCKET,
1157
SO_BINDTODEVICE,
1158
str(self.interface
1159
+ u'\0'))
1160
except socket.error, error:
1161
if error[0] == errno.EPERM:
1162
logger.error(u"No permission to"
1163
u" bind to interface %s",
1164
self.interface)
1165
elif error[0] == errno.ENOPROTOOPT:
1166
logger.error(u"SO_BINDTODEVICE not available;"
1167
u" cannot bind to interface %s",
1168
self.interface)
1169
else:
1170
raise
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
1171
759
# Only bind(2) the socket if we really need to.
1172
760
if self.server_address[0] or self.server_address[1]:
1173
761
if not self.server_address[0]:
1174
if self.address_family == socket.AF_INET6:
1175
any_address = u"::" # in6addr_any
1176
else:
1177
any_address = socket.INADDR_ANY
1178
self.server_address = (any_address,
762
in6addr_any = "::"
763
self.server_address = (in6addr_any,
1179
764
self.server_address[1])
1180
765
elif not self.server_address[1]:
1181
766
self.server_address = (self.server_address[0],
1182
767
0)
1183
# if self.interface:
768
# if self.settings["interface"]:
1184
769
# self.server_address = (self.server_address[0],
1185
770
# 0, # port
1186
771
# 0, # flowinfo
1187
772
# if_nametoindex
1188
# (self.interface))
1189
return socketserver.TCPServer.server_bind(self)
1190
1191
1192
class MandosServer(IPv6_TCPServer):
1193
"""Mandos server.
1194
1195
Attributes:
1196
clients: set of Client objects
1197
gnutls_priority GnuTLS priority string
1198
use_dbus: Boolean; to emit D-Bus signals or not
1199
1200
Assumes a gobject.MainLoop event loop.
1201
"""
1202
def __init__(self, server_address, RequestHandlerClass,
1203
interface=None, use_ipv6=True, clients=None,
1204
gnutls_priority=None, use_dbus=True):
1205
self.enabled = False
1206
self.clients = clients
1207
if self.clients is None:
1208
self.clients = set()
1209
self.use_dbus = use_dbus
1210
self.gnutls_priority = gnutls_priority
1211
IPv6_TCPServer.__init__(self, server_address,
1212
RequestHandlerClass,
1213
interface = interface,
1214
use_ipv6 = use_ipv6)
773
# (self.settings
774
# ["interface"]))
775
return super(IPv6_TCPServer, self).server_bind()
1215
776
def server_activate(self):
1216
777
if self.enabled:
1217
return socketserver.TCPServer.server_activate(self)
778
return super(IPv6_TCPServer, self).server_activate()
1218
779
def enable(self):
1219
780
self.enabled = True
1220
def add_pipe(self, pipe):
1221
# Call "handle_ipc" for both data and EOF events
1222
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1223
self.handle_ipc)
1224
def handle_ipc(self, source, condition, file_objects={}):
1225
condition_names = {
1226
gobject.IO_IN: u"IN", # There is data to read.
1227
gobject.IO_OUT: u"OUT", # Data can be written (without
1228
# blocking).
1229
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1230
gobject.IO_ERR: u"ERR", # Error condition.
1231
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1232
# broken, usually for pipes and
1233
# sockets).
1234
}
1235
conditions_string = ' | '.join(name
1236
for cond, name in
1237
condition_names.iteritems()
1238
if cond & condition)
1239
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1240
conditions_string)
1241
1242
# Turn the pipe file descriptor into a Python file object
1243
if source not in file_objects:
1244
file_objects[source] = os.fdopen(source, u"r", 1)
1245
1246
# Read a line from the file object
1247
cmdline = file_objects[source].readline()
1248
if not cmdline: # Empty line means end of file
1249
# close the IPC pipe
1250
file_objects[source].close()
1251
del file_objects[source]
1252
1253
# Stop calling this function
1254
return False
1255
1256
logger.debug(u"IPC command: %r", cmdline)
1257
1258
# Parse and act on command
1259
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1260
1261
if cmd == u"NOTFOUND":
1262
logger.warning(u"Client not found for fingerprint: %s",
1263
args)
1264
if self.use_dbus:
1265
# Emit D-Bus signal
1266
mandos_dbus_service.ClientNotFound(args)
1267
elif cmd == u"INVALID":
1268
for client in self.clients:
1269
if client.name == args:
1270
logger.warning(u"Client %s is invalid", args)
1271
if self.use_dbus:
1272
# Emit D-Bus signal
1273
client.Rejected()
1274
break
1275
else:
1276
logger.error(u"Unknown client %s is invalid", args)
1277
elif cmd == u"SENDING":
1278
for client in self.clients:
1279
if client.name == args:
1280
logger.info(u"Sending secret to %s", client.name)
1281
client.checked_ok()
1282
if self.use_dbus:
1283
# Emit D-Bus signal
1284
client.ReceivedSecret()
1285
break
1286
else:
1287
logger.error(u"Sending secret to unknown client %s",
1288
args)
1289
else:
1290
logger.error(u"Unknown IPC command: %r", cmdline)
1291
1292
# Keep calling this function
1293
return True
1294
781
1295
782
1296
783
def string_to_delta(interval):
1297
784
"""Parse a string and return a datetime.timedelta
1298
1299
>>> string_to_delta(u'7d')
785
786
>>> string_to_delta('7d')
1300
787
datetime.timedelta(7)
1301
>>> string_to_delta(u'60s')
788
>>> string_to_delta('60s')
1302
789
datetime.timedelta(0, 60)
1303
>>> string_to_delta(u'60m')
790
>>> string_to_delta('60m')
1304
791
datetime.timedelta(0, 3600)
1305
>>> string_to_delta(u'24h')
792
>>> string_to_delta('24h')
1306
793
datetime.timedelta(1)
1307
794
>>> string_to_delta(u'1w')
1308
795
datetime.timedelta(7)
1309
>>> string_to_delta(u'5m 30s')
796
>>> string_to_delta('5m 30s')
1310
797
datetime.timedelta(0, 330)
1311
798
"""
1312
799
timevalue = datetime.timedelta(0)
1332
819
return timevalue
1333
820
1334
821
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
1335
845
def if_nametoindex(interface):
1336
"""Call the C function if_nametoindex(), or equivalent
1337
1338
Note: This function cannot accept a unicode string."""
846
"""Call the C function if_nametoindex(), or equivalent"""
1339
847
global if_nametoindex
1340
848
try:
1341
849
if_nametoindex = (ctypes.cdll.LoadLibrary
1342
(ctypes.util.find_library(u"c"))
850
(ctypes.util.find_library("c"))
1343
851
.if_nametoindex)
1344
852
except (OSError, AttributeError):
1345
logger.warning(u"Doing if_nametoindex the hard way")
853
if "struct" not in sys.modules:
854
import struct
855
if "fcntl" not in sys.modules:
856
import fcntl
1346
857
def if_nametoindex(interface):
1347
858
"Get an interface index the hard way, i.e. using fcntl()"
1348
859
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1349
860
with closing(socket.socket()) as s:
1350
861
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1351
struct.pack(str(u"16s16x"),
1352
interface))
1353
interface_index = struct.unpack(str(u"I"),
1354
ifreq[16:20])[0]
862
struct.pack("16s16x", interface))
863
interface_index = struct.unpack("I", ifreq[16:20])[0]
1355
864
return interface_index
1356
865
return if_nametoindex(interface)
1357
866
1358
867
1359
868
def daemon(nochdir = False, noclose = False):
1360
869
"""See daemon(3). Standard BSD Unix function.
1361
1362
870
This should really exist as os.daemon, but it doesn't (yet)."""
1363
871
if os.fork():
1364
872
sys.exit()
1365
873
os.setsid()
1366
874
if not nochdir:
1367
os.chdir(u"/")
875
os.chdir("/")
1368
876
if os.fork():
1369
877
sys.exit()
1370
878
if not noclose:
1372
880
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1373
881
if not stat.S_ISCHR(os.fstat(null).st_mode):
1374
882
raise OSError(errno.ENODEV,
1375
u"/dev/null not a character device")
883
"/dev/null not a character device")
1376
884
os.dup2(null, sys.stdin.fileno())
1377
885
os.dup2(null, sys.stdout.fileno())
1378
886
os.dup2(null, sys.stderr.fileno())
1381
889
1382
890
1383
891
def main():
1384
1385
##################################################################
1386
# Parsing of options, both command line and config file
1387
1388
892
parser = optparse.OptionParser(version = "%%prog %s" % version)
1389
parser.add_option("-i", u"--interface", type=u"string",
1390
metavar="IF", help=u"Bind to interface IF")
1391
parser.add_option("-a", u"--address", type=u"string",
1392
help=u"Address to listen for requests on")
1393
parser.add_option("-p", u"--port", type=u"int",
1394
help=u"Port number to receive requests on")
1395
parser.add_option("--check", action=u"store_true",
1396
help=u"Run self-test")
1397
parser.add_option("--debug", action=u"store_true",
1398
help=u"Debug mode; run in foreground and log to"
1399
u" terminal")
1400
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1401
u" priority string (see GnuTLS documentation)")
1402
parser.add_option("--servicename", type=u"string",
1403
metavar=u"NAME", help=u"Zeroconf service name")
1404
parser.add_option("--configdir", type=u"string",
1405
default=u"/etc/mandos", metavar=u"DIR",
1406
help=u"Directory to search for configuration"
1407
u" files")
1408
parser.add_option("--no-dbus", action=u"store_false",
1409
dest=u"use_dbus", help=u"Do not provide D-Bus"
1410
u" system bus interface")
1411
parser.add_option("--no-ipv6", action=u"store_false",
1412
dest=u"use_ipv6", help=u"Do not use IPv6")
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")
1413
916
options = parser.parse_args()[0]
1414
917
1415
918
if options.check:
1418
921
sys.exit()
1419
922
1420
923
# Default values for config file for server-global settings
1421
server_defaults = { u"interface": u"",
1422
u"address": u"",
1423
u"port": u"",
1424
u"debug": u"False",
1425
u"priority":
1426
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1427
u"servicename": u"Mandos",
1428
u"use_dbus": u"True",
1429
u"use_ipv6": u"True",
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",
1430
932
}
1431
933
1432
934
# Parse config file for server-global settings
1433
server_config = configparser.SafeConfigParser(server_defaults)
935
server_config = ConfigParser.SafeConfigParser(server_defaults)
1434
936
del server_defaults
1435
server_config.read(os.path.join(options.configdir,
1436
u"mandos.conf"))
937
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1437
938
# Convert the SafeConfigParser object to a dict
1438
939
server_settings = server_config.defaults()
1439
# Use the appropriate methods on the non-string config options
1440
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1441
server_settings[option] = server_config.getboolean(u"DEFAULT",
1442
option)
1443
if server_settings["port"]:
1444
server_settings["port"] = server_config.getint(u"DEFAULT",
1445
u"port")
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"))
1446
945
del server_config
1447
946
1448
947
# Override the settings from the config file with command line
1449
948
# options, if set.
1450
for option in (u"interface", u"address", u"port", u"debug",
1451
u"priority", u"servicename", u"configdir",
1452
u"use_dbus", u"use_ipv6"):
949
for option in ("interface", "address", "port", "debug",
950
"priority", "servicename", "configdir",
951
"use_dbus"):
1453
952
value = getattr(options, option)
1454
953
if value is not None:
1455
954
server_settings[option] = value
1456
955
del options
1457
# Force all strings to be unicode
1458
for option in server_settings.keys():
1459
if type(server_settings[option]) is str:
1460
server_settings[option] = unicode(server_settings[option])
1461
956
# Now we have our good server settings in "server_settings"
1462
957
1463
##################################################################
1464
1465
958
# For convenience
1466
debug = server_settings[u"debug"]
1467
use_dbus = server_settings[u"use_dbus"]
1468
use_ipv6 = server_settings[u"use_ipv6"]
959
debug = server_settings["debug"]
960
use_dbus = server_settings["use_dbus"]
1469
961
1470
962
if not debug:
1471
963
syslogger.setLevel(logging.WARNING)
1472
964
console.setLevel(logging.WARNING)
1473
965
1474
if server_settings[u"servicename"] != u"Mandos":
966
if server_settings["servicename"] != "Mandos":
1475
967
syslogger.setFormatter(logging.Formatter
1476
(u'Mandos (%s) [%%(process)d]:'
1477
u' %%(levelname)s: %%(message)s'
1478
% server_settings[u"servicename"]))
968
('Mandos (%s): %%(levelname)s:'
969
' %%(message)s'
970
% server_settings["servicename"]))
1479
971
1480
972
# Parse config file with clients
1481
client_defaults = { u"timeout": u"1h",
1482
u"interval": u"5m",
1483
u"checker": u"fping -q -- %%(host)s",
1484
u"host": u"",
973
client_defaults = { "timeout": "1h",
974
"interval": "5m",
975
"checker": "fping -q -- %%(host)s",
976
"host": "",
1485
977
}
1486
client_config = configparser.SafeConfigParser(client_defaults)
1487
client_config.read(os.path.join(server_settings[u"configdir"],
1488
u"clients.conf"))
1489
1490
global mandos_dbus_service
1491
mandos_dbus_service = None
1492
1493
tcp_server = MandosServer((server_settings[u"address"],
1494
server_settings[u"port"]),
1495
ClientHandler,
1496
interface=server_settings[u"interface"],
1497
use_ipv6=use_ipv6,
1498
gnutls_priority=
1499
server_settings[u"priority"],
1500
use_dbus=use_dbus)
1501
pidfilename = u"/var/run/mandos.pid"
1502
try:
1503
pidfile = open(pidfilename, u"w")
1504
except IOError:
1505
logger.error(u"Could not open file %r", pidfilename)
1506
1507
try:
1508
uid = pwd.getpwnam(u"_mandos").pw_uid
1509
gid = pwd.getpwnam(u"_mandos").pw_gid
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
996
gid = pwd.getpwnam("_mandos").pw_gid
1510
997
except KeyError:
1511
998
try:
1512
uid = pwd.getpwnam(u"mandos").pw_uid
1513
gid = pwd.getpwnam(u"mandos").pw_gid
999
uid = pwd.getpwnam("mandos").pw_uid
1000
gid = pwd.getpwnam("mandos").pw_gid
1514
1001
except KeyError:
1515
1002
try:
1516
uid = pwd.getpwnam(u"nobody").pw_uid
1517
gid = pwd.getpwnam(u"nobody").pw_gid
1003
uid = pwd.getpwnam("nobody").pw_uid
1004
gid = pwd.getpwnam("nogroup").pw_gid
1518
1005
except KeyError:
1519
1006
uid = 65534
1520
1007
gid = 65534
1521
1008
try:
1009
os.setuid(uid)
1522
1010
os.setgid(gid)
1523
os.setuid(uid)
1524
1011
except OSError, error:
1525
1012
if error[0] != errno.EPERM:
1526
1013
raise error
1527
1014
1528
# Enable all possible GnuTLS debugging
1529
if debug:
1530
# "Use a log level over 10 to enable all debugging options."
1531
# - GnuTLS manual
1532
gnutls.library.functions.gnutls_global_set_log_level(11)
1533
1534
@gnutls.library.types.gnutls_log_func
1535
def debug_gnutls(level, string):
1536
logger.debug(u"GnuTLS: %s", string[:-1])
1537
1538
(gnutls.library.functions
1539
.gnutls_global_set_log_function(debug_gnutls))
1015
global service
1016
service = AvahiService(name = server_settings["servicename"],
1017
servicetype = "_mandos._tcp", )
1018
if server_settings["interface"]:
1019
service.interface = (if_nametoindex
1020
(server_settings["interface"]))
1540
1021
1541
1022
global main_loop
1023
global bus
1024
global server
1542
1025
# From the Avahi example code
1543
1026
DBusGMainLoop(set_as_default=True )
1544
1027
main_loop = gobject.MainLoop()
1545
1028
bus = dbus.SystemBus()
1029
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1030
avahi.DBUS_PATH_SERVER),
1031
avahi.DBUS_INTERFACE_SERVER)
1546
1032
# End of Avahi example code
1547
1033
if use_dbus:
1548
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1550
service = AvahiService(name = server_settings[u"servicename"],
1551
servicetype = u"_mandos._tcp",
1552
protocol = protocol, bus = bus)
1553
if server_settings["interface"]:
1554
service.interface = (if_nametoindex
1555
(str(server_settings[u"interface"])))
1034
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos",
1035
bus)
1556
1036
1557
client_class = Client
1558
if use_dbus:
1559
client_class = functools.partial(ClientDBus, bus = bus)
1560
tcp_server.clients.update(set(
1561
client_class(name = section,
1562
config= dict(client_config.items(section)))
1563
for section in client_config.sections()))
1564
if not tcp_server.clients:
1037
clients.update(Set(Client(name = section,
1038
config
1039
= dict(client_config.items(section)),
1040
use_dbus = use_dbus)
1041
for section in client_config.sections()))
1042
if not clients:
1565
1043
logger.warning(u"No clients defined")
1566
1044
1567
1045
if debug:
1577
1055
daemon()
1578
1056
1579
1057
try:
1580
with closing(pidfile):
1581
pid = os.getpid()
1582
pidfile.write(str(pid) + "\n")
1058
pid = os.getpid()
1059
pidfile.write(str(pid) + "\n")
1060
pidfile.close()
1583
1061
del pidfile
1584
1062
except IOError:
1585
1063
logger.error(u"Could not write to file %r with PID %d",
1591
1069
1592
1070
def cleanup():
1593
1071
"Cleanup function; run on exit"
1594
service.cleanup()
1072
global group
1073
# From the Avahi example code
1074
if not group is None:
1075
group.Free()
1076
group = None
1077
# End of Avahi example code
1595
1078
1596
while tcp_server.clients:
1597
client = tcp_server.clients.pop()
1079
while clients:
1080
client = clients.pop()
1598
1081
client.disable_hook = None
1599
1082
client.disable()
1600
1083
1606
1089
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1607
1090
1608
1091
if use_dbus:
1609
class MandosDBusService(dbus.service.Object):
1092
class MandosServer(dbus.service.Object):
1610
1093
"""A D-Bus proxy object"""
1611
1094
def __init__(self):
1612
dbus.service.Object.__init__(self, bus, u"/")
1613
_interface = u"se.bsnet.fukt.Mandos"
1614
1615
@dbus.service.signal(_interface, signature=u"oa{sv}")
1095
dbus.service.Object.__init__(self, bus,
1096
"/Mandos")
1097
_interface = u"org.mandos_system.Mandos"
1098
1099
@dbus.service.signal(_interface, signature="oa{sv}")
1616
1100
def ClientAdded(self, objpath, properties):
1617
1101
"D-Bus signal"
1618
1102
pass
1619
1620
@dbus.service.signal(_interface, signature=u"s")
1621
def ClientNotFound(self, fingerprint):
1622
"D-Bus signal"
1623
pass
1624
1625
@dbus.service.signal(_interface, signature=u"os")
1626
def ClientRemoved(self, objpath, name):
1627
"D-Bus signal"
1628
pass
1629
1630
@dbus.service.method(_interface, out_signature=u"ao")
1103
1104
@dbus.service.signal(_interface, signature="o")
1105
def ClientRemoved(self, objpath):
1106
"D-Bus signal"
1107
pass
1108
1109
@dbus.service.method(_interface, out_signature="ao")
1631
1110
def GetAllClients(self):
1632
"D-Bus method"
1633
return dbus.Array(c.dbus_object_path
1634
for c in tcp_server.clients)
1635
1636
@dbus.service.method(_interface,
1637
out_signature=u"a{oa{sv}}")
1111
return dbus.Array(c.dbus_object_path for c in clients)
1112
1113
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1638
1114
def GetAllClientsWithProperties(self):
1639
"D-Bus method"
1640
1115
return dbus.Dictionary(
1641
((c.dbus_object_path, c.GetAll(u""))
1642
for c in tcp_server.clients),
1643
signature=u"oa{sv}")
1644
1645
@dbus.service.method(_interface, in_signature=u"o")
1116
((c.dbus_object_path, c.GetAllProperties())
1117
for c in clients),
1118
signature="oa{sv}")
1119
1120
@dbus.service.method(_interface, in_signature="o")
1646
1121
def RemoveClient(self, object_path):
1647
"D-Bus method"
1648
for c in tcp_server.clients:
1122
for c in clients:
1649
1123
if c.dbus_object_path == object_path:
1650
tcp_server.clients.remove(c)
1651
c.remove_from_connection()
1124
clients.remove(c)
1652
1125
# Don't signal anything except ClientRemoved
1653
c.disable(signal=False)
1126
c.use_dbus = False
1127
c.disable()
1654
1128
# Emit D-Bus signal
1655
self.ClientRemoved(object_path, c.name)
1129
self.ClientRemoved(object_path)
1656
1130
return
1657
1131
raise KeyError
1658
1132
@dbus.service.method(_interface)
1133
def Quit(self):
1134
main_loop.quit()
1135
1659
1136
del _interface
1660
1661
mandos_dbus_service = MandosDBusService()
1662
1663
for client in tcp_server.clients:
1137
1138
mandos_server = MandosServer()
1139
1140
for client in clients:
1664
1141
if use_dbus:
1665
1142
# Emit D-Bus signal
1666
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1667
client.GetAll(u""))
1143
mandos_server.ClientAdded(client.dbus_object_path,
1144
client.GetAllProperties())
1668
1145
client.enable()
1669
1146
1670
1147
tcp_server.enable()
1672
1149
1673
1150
# Find out what port we got
1674
1151
service.port = tcp_server.socket.getsockname()[1]
1675
if use_ipv6:
1676
logger.info(u"Now listening on address %r, port %d,"
1677
" flowinfo %d, scope_id %d"
1678
% tcp_server.socket.getsockname())
1679
else: # IPv4
1680
logger.info(u"Now listening on address %r, port %d"
1681
% tcp_server.socket.getsockname())
1152
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1153
u" scope_id %d" % tcp_server.socket.getsockname())
1682
1154
1683
1155
#service.interface = tcp_server.socket.getsockname()[3]
1684
1156
1685
1157
try:
1686
1158
# From the Avahi example code
1159
server.connect_to_signal("StateChanged", server_state_changed)
1687
1160
try:
1688
service.activate()
1161
server_state_changed(server.GetState())
1689
1162
except dbus.exceptions.DBusException, error:
1690
1163
logger.critical(u"DBusException: %s", error)
1691
1164
sys.exit(1)
1703
1176
sys.exit(1)
1704
1177
except KeyboardInterrupt:
1705
1178
if debug:
1706
print >> sys.stderr
1707
logger.debug(u"Server received KeyboardInterrupt")
1708
logger.debug(u"Server exiting")
1179
print
1709
1180
1710
1181
if __name__ == '__main__':
1711
1182
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0