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- Committer: Teddy Hogeborn
- Date: 2009-01-31 10:33:17 UTC
- mfrom: (24.1.129 mandos)
- Revision ID: teddy@fukt.bsnet.se-20090131103317-wzqvyr532sjcjt7u
Merge from Björn:
* mandos-ctl: New option "--remove-client". Only default to listing
clients if no clients were given on the command line.
* plugins.d/mandos-client.c: Lower kernel log level while bringing up
network interface. New option "--delay"
to control the maximum delay to wait for
running interface.
* plugins.d/mandos-client.xml (SYNOPSIS, OPTIONS): New option
"--delay".
* mandos-ctl: New option "--remove-client". Only default to listing
clients if no clients were given on the command line.
* plugins.d/mandos-client.c: Lower kernel log level while bringing up
network interface. New option "--delay"
to control the maximum delay to wait for
running interface.
* plugins.d/mandos-client.xml (SYNOPSIS, OPTIONS): New option
"--delay".
- 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
181
name: string; from the config file, used in log messages and
235
182
D-Bus identifiers
249
196
to see if the client lives.
250
197
'None' if no process is running.
251
198
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
199
disable_initiator_tag: - '' -
253
200
checker_callback_tag: - '' -
254
201
checker_command: string; External command which is run to check if
255
202
client lives. %() expansions are done at
256
203
runtime with vars(self) as dict, so that for
257
204
instance %(name)s can be used in the command.
258
current_checker_command: string; current running checker_command
205
use_dbus: bool(); Whether to provide D-Bus interface and signals
206
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
259
207
"""
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
208
def timeout_milliseconds(self):
269
209
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
210
return ((self.timeout.days * 24 * 60 * 60 * 1000)
211
+ (self.timeout.seconds * 1000)
212
+ (self.timeout.microseconds // 1000))
271
213
272
214
def interval_milliseconds(self):
273
215
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
216
return ((self.interval.days * 24 * 60 * 60 * 1000)
217
+ (self.interval.seconds * 1000)
218
+ (self.interval.microseconds // 1000))
275
219
276
def __init__(self, name = None, disable_hook=None, config=None):
220
def __init__(self, name = None, disable_hook=None, config=None,
221
use_dbus=True):
277
222
"""Note: the 'checker' key in 'config' sets the
278
223
'checker_command' attribute and *not* the 'checker'
279
224
attribute."""
281
226
if config is None:
282
227
config = {}
283
228
logger.debug(u"Creating client %r", self.name)
229
self.use_dbus = False # During __init__
284
230
# Uppercase and remove spaces from fingerprint for later
285
231
# comparison purposes with return value from the fingerprint()
286
232
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
233
self.fingerprint = (config["fingerprint"].upper()
288
234
.replace(u" ", u""))
289
235
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:
236
if "secret" in config:
237
self.secret = config["secret"].decode(u"base64")
238
elif "secfile" in config:
293
239
with closing(open(os.path.expanduser
294
240
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
241
(config["secfile"])))) as secfile:
297
242
self.secret = secfile.read()
298
243
else:
299
244
raise TypeError(u"No secret or secfile for client %s"
300
245
% self.name)
301
self.host = config.get(u"host", u"")
246
self.host = config.get("host", "")
302
247
self.created = datetime.datetime.utcnow()
303
248
self.enabled = False
304
249
self.last_enabled = None
305
250
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
251
self.timeout = string_to_delta(config["timeout"])
252
self.interval = string_to_delta(config["interval"])
308
253
self.disable_hook = disable_hook
309
254
self.checker = None
310
255
self.checker_initiator_tag = None
311
256
self.disable_initiator_tag = None
312
257
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
314
self.current_checker_command = None
258
self.checker_command = config["checker"]
315
259
self.last_connect = None
260
# Only now, when this client is initialized, can it show up on
261
# the D-Bus
262
self.use_dbus = use_dbus
263
if self.use_dbus:
264
self.dbus_object_path = (dbus.ObjectPath
265
("/clients/"
266
+ self.name.replace(".", "_")))
267
dbus.service.Object.__init__(self, bus,
268
self.dbus_object_path)
316
269
317
270
def enable(self):
318
271
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
320
# Already enabled
321
return
322
272
self.last_enabled = datetime.datetime.utcnow()
323
273
# Schedule a new checker to be started an 'interval' from now,
324
274
# and every interval from then on.
332
282
(self.timeout_milliseconds(),
333
283
self.disable))
334
284
self.enabled = True
285
if self.use_dbus:
286
# Emit D-Bus signals
287
self.PropertyChanged(dbus.String(u"enabled"),
288
dbus.Boolean(True, variant_level=1))
289
self.PropertyChanged(dbus.String(u"last_enabled"),
290
(_datetime_to_dbus(self.last_enabled,
291
variant_level=1)))
335
292
336
293
def disable(self):
337
294
"""Disable this client."""
338
295
if not getattr(self, "enabled", False):
339
296
return False
340
297
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
298
if getattr(self, "disable_initiator_tag", False):
342
299
gobject.source_remove(self.disable_initiator_tag)
343
300
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
301
if getattr(self, "checker_initiator_tag", False):
345
302
gobject.source_remove(self.checker_initiator_tag)
346
303
self.checker_initiator_tag = None
347
304
self.stop_checker()
348
305
if self.disable_hook:
349
306
self.disable_hook(self)
350
307
self.enabled = False
308
if self.use_dbus:
309
# Emit D-Bus signal
310
self.PropertyChanged(dbus.String(u"enabled"),
311
dbus.Boolean(False, variant_level=1))
351
312
# Do not run this again if called by a gobject.timeout_add
352
313
return False
353
314
359
320
"""The checker has completed, so take appropriate actions."""
360
321
self.checker_callback_tag = None
361
322
self.checker = None
323
if self.use_dbus:
324
# Emit D-Bus signal
325
self.PropertyChanged(dbus.String(u"checker_running"),
326
dbus.Boolean(False, variant_level=1))
362
327
if os.WIFEXITED(condition):
363
328
exitstatus = os.WEXITSTATUS(condition)
364
329
if exitstatus == 0:
368
333
else:
369
334
logger.info(u"Checker for %(name)s failed",
370
335
vars(self))
336
if self.use_dbus:
337
# Emit D-Bus signal
338
self.CheckerCompleted(dbus.Int16(exitstatus),
339
dbus.Int64(condition),
340
dbus.String(command))
371
341
else:
372
342
logger.warning(u"Checker for %(name)s crashed?",
373
343
vars(self))
344
if self.use_dbus:
345
# Emit D-Bus signal
346
self.CheckerCompleted(dbus.Int16(-1),
347
dbus.Int64(condition),
348
dbus.String(command))
374
349
375
350
def checked_ok(self):
376
351
"""Bump up the timeout for this client.
377
378
352
This should only be called when the client has been seen,
379
353
alive and well.
380
354
"""
383
357
self.disable_initiator_tag = (gobject.timeout_add
384
358
(self.timeout_milliseconds(),
385
359
self.disable))
360
if self.use_dbus:
361
# Emit D-Bus signal
362
self.PropertyChanged(
363
dbus.String(u"last_checked_ok"),
364
(_datetime_to_dbus(self.last_checked_ok,
365
variant_level=1)))
386
366
387
367
def start_checker(self):
388
368
"""Start a new checker subprocess if one is not running.
389
390
369
If a checker already exists, leave it running and do
391
370
nothing."""
392
371
# The reason for not killing a running checker is that if we
397
376
# checkers alone, the checker would have to take more time
398
377
# than 'timeout' for the client to be declared invalid, which
399
378
# 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
415
379
if self.checker is None:
416
380
try:
417
381
# In case checker_command has exactly one % operator
418
382
command = self.checker_command % self.host
419
383
except TypeError:
420
384
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
385
escaped_attrs = dict((key, re.escape(str(val)))
425
386
for key, val in
426
387
vars(self).iteritems())
427
388
try:
430
391
logger.error(u'Could not format string "%s":'
431
392
u' %s', self.checker_command, error)
432
393
return True # Try again later
433
self.current_checker_command = command
434
394
try:
435
395
logger.info(u"Starting checker %r for %s",
436
396
command, self.name)
440
400
# always replaced by /dev/null.)
441
401
self.checker = subprocess.Popen(command,
442
402
close_fds=True,
443
shell=True, cwd=u"/")
403
shell=True, cwd="/")
404
if self.use_dbus:
405
# Emit D-Bus signal
406
self.CheckerStarted(command)
407
self.PropertyChanged(
408
dbus.String("checker_running"),
409
dbus.Boolean(True, variant_level=1))
444
410
self.checker_callback_tag = (gobject.child_watch_add
445
411
(self.checker.pid,
446
412
self.checker_callback,
447
413
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)
454
414
except OSError, error:
455
415
logger.error(u"Failed to start subprocess: %s",
456
416
error)
462
422
if self.checker_callback_tag:
463
423
gobject.source_remove(self.checker_callback_tag)
464
424
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
425
if getattr(self, "checker", None) is None:
466
426
return
467
427
logger.debug(u"Stopping checker for %(name)s", vars(self))
468
428
try:
474
434
if error.errno != errno.ESRCH: # No such process
475
435
raise
476
436
self.checker = None
437
if self.use_dbus:
438
self.PropertyChanged(dbus.String(u"checker_running"),
439
dbus.Boolean(False, variant_level=1))
477
440
478
441
def still_valid(self):
479
442
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
443
if not getattr(self, "enabled", False):
481
444
return False
482
445
now = datetime.datetime.utcnow()
483
446
if self.last_checked_ok is None:
484
447
return now < (self.created + self.timeout)
485
448
else:
486
449
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
782
450
783
451
## D-Bus methods & signals
784
452
_interface = u"se.bsnet.fukt.Mandos.Client"
785
453
786
454
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
455
CheckedOK = dbus.service.method(_interface)(checked_ok)
456
CheckedOK.__name__ = "CheckedOK"
790
457
791
458
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
459
@dbus.service.signal(_interface, signature="nxs")
793
460
def CheckerCompleted(self, exitcode, waitstatus, command):
794
461
"D-Bus signal"
795
462
pass
796
463
797
464
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
465
@dbus.service.signal(_interface, signature="s")
799
466
def CheckerStarted(self, command):
800
467
"D-Bus signal"
801
468
pass
802
469
470
# GetAllProperties - method
471
@dbus.service.method(_interface, out_signature="a{sv}")
472
def GetAllProperties(self):
473
"D-Bus method"
474
return dbus.Dictionary({
475
dbus.String("name"):
476
dbus.String(self.name, variant_level=1),
477
dbus.String("fingerprint"):
478
dbus.String(self.fingerprint, variant_level=1),
479
dbus.String("host"):
480
dbus.String(self.host, variant_level=1),
481
dbus.String("created"):
482
_datetime_to_dbus(self.created, variant_level=1),
483
dbus.String("last_enabled"):
484
(_datetime_to_dbus(self.last_enabled,
485
variant_level=1)
486
if self.last_enabled is not None
487
else dbus.Boolean(False, variant_level=1)),
488
dbus.String("enabled"):
489
dbus.Boolean(self.enabled, variant_level=1),
490
dbus.String("last_checked_ok"):
491
(_datetime_to_dbus(self.last_checked_ok,
492
variant_level=1)
493
if self.last_checked_ok is not None
494
else dbus.Boolean (False, variant_level=1)),
495
dbus.String("timeout"):
496
dbus.UInt64(self.timeout_milliseconds(),
497
variant_level=1),
498
dbus.String("interval"):
499
dbus.UInt64(self.interval_milliseconds(),
500
variant_level=1),
501
dbus.String("checker"):
502
dbus.String(self.checker_command,
503
variant_level=1),
504
dbus.String("checker_running"):
505
dbus.Boolean(self.checker is not None,
506
variant_level=1),
507
dbus.String("object_path"):
508
dbus.ObjectPath(self.dbus_object_path,
509
variant_level=1)
510
}, signature="sv")
511
512
# IsStillValid - method
513
IsStillValid = (dbus.service.method(_interface, out_signature="b")
514
(still_valid))
515
IsStillValid.__name__ = "IsStillValid"
516
803
517
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
518
@dbus.service.signal(_interface, signature="sv")
805
519
def PropertyChanged(self, property, value):
806
520
"D-Bus signal"
807
521
pass
808
522
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
523
# SetChecker - method
524
@dbus.service.method(_interface, in_signature="s")
525
def SetChecker(self, checker):
526
"D-Bus setter method"
527
self.checker_command = checker
528
# Emit D-Bus signal
529
self.PropertyChanged(dbus.String(u"checker"),
530
dbus.String(self.checker_command,
531
variant_level=1))
532
533
# SetHost - method
534
@dbus.service.method(_interface, in_signature="s")
535
def SetHost(self, host):
536
"D-Bus setter method"
537
self.host = host
538
# Emit D-Bus signal
539
self.PropertyChanged(dbus.String(u"host"),
540
dbus.String(self.host, variant_level=1))
541
542
# SetInterval - method
543
@dbus.service.method(_interface, in_signature="t")
544
def SetInterval(self, milliseconds):
545
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
546
# Emit D-Bus signal
547
self.PropertyChanged(dbus.String(u"interval"),
548
(dbus.UInt64(self.interval_milliseconds(),
549
variant_level=1)))
550
551
# SetSecret - method
552
@dbus.service.method(_interface, in_signature="ay",
553
byte_arrays=True)
554
def SetSecret(self, secret):
555
"D-Bus setter method"
556
self.secret = str(secret)
557
558
# SetTimeout - method
559
@dbus.service.method(_interface, in_signature="t")
560
def SetTimeout(self, milliseconds):
561
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
562
# Emit D-Bus signal
563
self.PropertyChanged(dbus.String(u"timeout"),
564
(dbus.UInt64(self.timeout_milliseconds(),
565
variant_level=1)))
820
566
821
567
# Enable - method
822
@dbus.service.method(_interface)
823
def Enable(self):
824
"D-Bus method"
825
self.enable()
568
Enable = dbus.service.method(_interface)(enable)
569
Enable.__name__ = "Enable"
826
570
827
571
# StartChecker - method
828
572
@dbus.service.method(_interface)
837
581
self.disable()
838
582
839
583
# StopChecker - method
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)
584
StopChecker = dbus.service.method(_interface)(stop_checker)
585
StopChecker.__name__ = "StopChecker"
979
586
980
587
del _interface
981
588
982
589
983
class ClientHandler(socketserver.BaseRequestHandler, object):
984
"""A class to handle client connections.
985
986
Instantiated once for each connection to handle it.
590
def peer_certificate(session):
591
"Return the peer's OpenPGP certificate as a bytestring"
592
# If not an OpenPGP certificate...
593
if (gnutls.library.functions
594
.gnutls_certificate_type_get(session._c_object)
595
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
596
# ...do the normal thing
597
return session.peer_certificate
598
list_size = ctypes.c_uint(1)
599
cert_list = (gnutls.library.functions
600
.gnutls_certificate_get_peers
601
(session._c_object, ctypes.byref(list_size)))
602
if not bool(cert_list) and list_size.value != 0:
603
raise gnutls.errors.GNUTLSError("error getting peer"
604
" certificate")
605
if list_size.value == 0:
606
return None
607
cert = cert_list[0]
608
return ctypes.string_at(cert.data, cert.size)
609
610
611
def fingerprint(openpgp):
612
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
613
# New GnuTLS "datum" with the OpenPGP public key
614
datum = (gnutls.library.types
615
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
616
ctypes.POINTER
617
(ctypes.c_ubyte)),
618
ctypes.c_uint(len(openpgp))))
619
# New empty GnuTLS certificate
620
crt = gnutls.library.types.gnutls_openpgp_crt_t()
621
(gnutls.library.functions
622
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
623
# Import the OpenPGP public key into the certificate
624
(gnutls.library.functions
625
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
626
gnutls.library.constants
627
.GNUTLS_OPENPGP_FMT_RAW))
628
# Verify the self signature in the key
629
crtverify = ctypes.c_uint()
630
(gnutls.library.functions
631
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
632
if crtverify.value != 0:
633
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
634
raise gnutls.errors.CertificateSecurityError("Verify failed")
635
# New buffer for the fingerprint
636
buf = ctypes.create_string_buffer(20)
637
buf_len = ctypes.c_size_t()
638
# Get the fingerprint from the certificate into the buffer
639
(gnutls.library.functions
640
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
641
ctypes.byref(buf_len)))
642
# Deinit the certificate
643
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
644
# Convert the buffer to a Python bytestring
645
fpr = ctypes.string_at(buf, buf_len.value)
646
# Convert the bytestring to hexadecimal notation
647
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
648
return hex_fpr
649
650
651
class TCP_handler(SocketServer.BaseRequestHandler, object):
652
"""A TCP request handler class.
653
Instantiated by IPv6_TCPServer for each request to handle it.
987
654
Note: This will run in its own forked process."""
988
655
989
656
def handle(self):
990
657
logger.info(u"TCP connection from: %s",
991
658
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
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
659
session = (gnutls.connection
660
.ClientSession(self.request,
661
gnutls.connection
662
.X509Credentials()))
663
664
line = self.request.makefile().readline()
665
logger.debug(u"Protocol version: %r", line)
666
try:
667
if int(line.strip().split()[0]) > 1:
668
raise RuntimeError
669
except (ValueError, IndexError, RuntimeError), error:
670
logger.error(u"Unknown protocol version: %s", error)
671
return
672
673
# Note: gnutls.connection.X509Credentials is really a generic
674
# GnuTLS certificate credentials object so long as no X.509
675
# keys are added to it. Therefore, we can use it here despite
676
# using OpenPGP certificates.
677
678
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
679
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
680
# "+DHE-DSS"))
681
# Use a fallback default, since this MUST be set.
682
priority = self.server.settings.get("priority", "NORMAL")
683
(gnutls.library.functions
684
.gnutls_priority_set_direct(session._c_object,
685
priority, None))
686
687
try:
688
session.handshake()
689
except gnutls.errors.GNUTLSError, error:
690
logger.warning(u"Handshake failed: %s", error)
691
# Do not run session.bye() here: the session is not
692
# established. Just abandon the request.
693
return
694
logger.debug(u"Handshake succeeded")
695
try:
696
fpr = fingerprint(peer_certificate(session))
697
except (TypeError, gnutls.errors.GNUTLSError), error:
698
logger.warning(u"Bad certificate: %s", error)
699
session.bye()
700
return
701
logger.debug(u"Fingerprint: %s", fpr)
702
703
for c in self.server.clients:
704
if c.fingerprint == fpr:
705
client = c
706
break
707
else:
708
logger.warning(u"Client not found for fingerprint: %s",
709
fpr)
710
session.bye()
711
return
712
# Have to check if client.still_valid(), since it is possible
713
# that the client timed out while establishing the GnuTLS
714
# session.
715
if not client.still_valid():
716
logger.warning(u"Client %(name)s is invalid",
717
vars(client))
718
session.bye()
719
return
720
## This won't work here, since we're in a fork.
721
# client.checked_ok()
722
sent_size = 0
723
while sent_size < len(client.secret):
724
sent = session.send(client.secret[sent_size:])
725
logger.debug(u"Sent: %d, remaining: %d",
726
sent, len(client.secret)
727
- (sent_size + sent))
728
sent_size += sent
729
session.bye()
730
731
732
class IPv6_TCPServer(SocketServer.ForkingMixIn,
733
SocketServer.TCPServer, object):
734
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1153
735
Attributes:
736
settings: Server settings
737
clients: Set() of Client objects
1154
738
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
1157
739
"""
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)
740
address_family = socket.AF_INET6
741
def __init__(self, *args, **kwargs):
742
if "settings" in kwargs:
743
self.settings = kwargs["settings"]
744
del kwargs["settings"]
745
if "clients" in kwargs:
746
self.clients = kwargs["clients"]
747
del kwargs["clients"]
748
self.enabled = False
749
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1165
750
def server_bind(self):
1166
751
"""This overrides the normal server_bind() function
1167
752
to bind to an interface if one was specified, and also NOT to
1168
753
bind to an address or port if they were not specified."""
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
754
if self.settings["interface"]:
755
# 25 is from /usr/include/asm-i486/socket.h
756
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
757
try:
758
self.socket.setsockopt(socket.SOL_SOCKET,
759
SO_BINDTODEVICE,
760
self.settings["interface"])
761
except socket.error, error:
762
if error[0] == errno.EPERM:
763
logger.error(u"No permission to"
764
u" bind to interface %s",
765
self.settings["interface"])
766
else:
767
raise error
1191
768
# Only bind(2) the socket if we really need to.
1192
769
if self.server_address[0] or self.server_address[1]:
1193
770
if not self.server_address[0]:
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,
771
in6addr_any = "::"
772
self.server_address = (in6addr_any,
1199
773
self.server_address[1])
1200
774
elif not self.server_address[1]:
1201
775
self.server_address = (self.server_address[0],
1202
776
0)
1203
# if self.interface:
777
# if self.settings["interface"]:
1204
778
# self.server_address = (self.server_address[0],
1205
779
# 0, # port
1206
780
# 0, # flowinfo
1207
781
# if_nametoindex
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)
782
# (self.settings
783
# ["interface"]))
784
return super(IPv6_TCPServer, self).server_bind()
1235
785
def server_activate(self):
1236
786
if self.enabled:
1237
return socketserver.TCPServer.server_activate(self)
787
return super(IPv6_TCPServer, self).server_activate()
1238
788
def enable(self):
1239
789
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
1314
790
1315
791
1316
792
def string_to_delta(interval):
1317
793
"""Parse a string and return a datetime.timedelta
1318
794
1319
>>> string_to_delta(u'7d')
795
>>> string_to_delta('7d')
1320
796
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
797
>>> string_to_delta('60s')
1322
798
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
799
>>> string_to_delta('60m')
1324
800
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
801
>>> string_to_delta('24h')
1326
802
datetime.timedelta(1)
1327
803
>>> string_to_delta(u'1w')
1328
804
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
805
>>> string_to_delta('5m 30s')
1330
806
datetime.timedelta(0, 330)
1331
807
"""
1332
808
timevalue = datetime.timedelta(0)
1352
828
return timevalue
1353
829
1354
830
831
def server_state_changed(state):
832
"""Derived from the Avahi example code"""
833
if state == avahi.SERVER_COLLISION:
834
logger.error(u"Zeroconf server name collision")
835
service.remove()
836
elif state == avahi.SERVER_RUNNING:
837
service.add()
838
839
840
def entry_group_state_changed(state, error):
841
"""Derived from the Avahi example code"""
842
logger.debug(u"Avahi state change: %i", state)
843
844
if state == avahi.ENTRY_GROUP_ESTABLISHED:
845
logger.debug(u"Zeroconf service established.")
846
elif state == avahi.ENTRY_GROUP_COLLISION:
847
logger.warning(u"Zeroconf service name collision.")
848
service.rename()
849
elif state == avahi.ENTRY_GROUP_FAILURE:
850
logger.critical(u"Avahi: Error in group state changed %s",
851
unicode(error))
852
raise AvahiGroupError(u"State changed: %s" % unicode(error))
853
1355
854
def if_nametoindex(interface):
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
855
"""Call the C function if_nametoindex(), or equivalent"""
1359
856
global if_nametoindex
1360
857
try:
1361
858
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
859
(ctypes.util.find_library("c"))
1363
860
.if_nametoindex)
1364
861
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
862
if "struct" not in sys.modules:
863
import struct
864
if "fcntl" not in sys.modules:
865
import fcntl
1366
866
def if_nametoindex(interface):
1367
867
"Get an interface index the hard way, i.e. using fcntl()"
1368
868
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
869
with closing(socket.socket()) as s:
1370
870
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
871
struct.pack("16s16x", interface))
872
interface_index = struct.unpack("I", ifreq[16:20])[0]
1375
873
return interface_index
1376
874
return if_nametoindex(interface)
1377
875
1378
876
1379
877
def daemon(nochdir = False, noclose = False):
1380
878
"""See daemon(3). Standard BSD Unix function.
1381
1382
879
This should really exist as os.daemon, but it doesn't (yet)."""
1383
880
if os.fork():
1384
881
sys.exit()
1385
882
os.setsid()
1386
883
if not nochdir:
1387
os.chdir(u"/")
884
os.chdir("/")
1388
885
if os.fork():
1389
886
sys.exit()
1390
887
if not noclose:
1392
889
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1393
890
if not stat.S_ISCHR(os.fstat(null).st_mode):
1394
891
raise OSError(errno.ENODEV,
1395
u"/dev/null not a character device")
892
"/dev/null not a character device")
1396
893
os.dup2(null, sys.stdin.fileno())
1397
894
os.dup2(null, sys.stdout.fileno())
1398
895
os.dup2(null, sys.stderr.fileno())
1401
898
1402
899
1403
900
def main():
1404
1405
##################################################################
1406
# Parsing of options, both command line and config file
1407
1408
901
parser = optparse.OptionParser(version = "%%prog %s" % version)
1409
parser.add_option("-i", u"--interface", type=u"string",
1410
metavar="IF", help=u"Bind to interface IF")
1411
parser.add_option("-a", u"--address", type=u"string",
1412
help=u"Address to listen for requests on")
1413
parser.add_option("-p", u"--port", type=u"int",
1414
help=u"Port number to receive requests on")
1415
parser.add_option("--check", action=u"store_true",
1416
help=u"Run self-test")
1417
parser.add_option("--debug", action=u"store_true",
1418
help=u"Debug mode; run in foreground and log to"
1419
u" terminal")
1420
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1421
u" priority string (see GnuTLS documentation)")
1422
parser.add_option("--servicename", type=u"string",
1423
metavar=u"NAME", help=u"Zeroconf service name")
1424
parser.add_option("--configdir", type=u"string",
1425
default=u"/etc/mandos", metavar=u"DIR",
1426
help=u"Directory to search for configuration"
1427
u" files")
1428
parser.add_option("--no-dbus", action=u"store_false",
1429
dest=u"use_dbus", help=u"Do not provide D-Bus"
1430
u" system bus interface")
1431
parser.add_option("--no-ipv6", action=u"store_false",
1432
dest=u"use_ipv6", help=u"Do not use IPv6")
902
parser.add_option("-i", "--interface", type="string",
903
metavar="IF", help="Bind to interface IF")
904
parser.add_option("-a", "--address", type="string",
905
help="Address to listen for requests on")
906
parser.add_option("-p", "--port", type="int",
907
help="Port number to receive requests on")
908
parser.add_option("--check", action="store_true",
909
help="Run self-test")
910
parser.add_option("--debug", action="store_true",
911
help="Debug mode; run in foreground and log to"
912
" terminal")
913
parser.add_option("--priority", type="string", help="GnuTLS"
914
" priority string (see GnuTLS documentation)")
915
parser.add_option("--servicename", type="string", metavar="NAME",
916
help="Zeroconf service name")
917
parser.add_option("--configdir", type="string",
918
default="/etc/mandos", metavar="DIR",
919
help="Directory to search for configuration"
920
" files")
921
parser.add_option("--no-dbus", action="store_false",
922
dest="use_dbus",
923
help="Do not provide D-Bus system bus"
924
" interface")
1433
925
options = parser.parse_args()[0]
1434
926
1435
927
if options.check:
1438
930
sys.exit()
1439
931
1440
932
# Default values for config file for server-global settings
1441
server_defaults = { u"interface": u"",
1442
u"address": u"",
1443
u"port": u"",
1444
u"debug": u"False",
1445
u"priority":
1446
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1447
u"servicename": u"Mandos",
1448
u"use_dbus": u"True",
1449
u"use_ipv6": u"True",
933
server_defaults = { "interface": "",
934
"address": "",
935
"port": "",
936
"debug": "False",
937
"priority":
938
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
939
"servicename": "Mandos",
940
"use_dbus": "True",
1450
941
}
1451
942
1452
943
# Parse config file for server-global settings
1453
server_config = configparser.SafeConfigParser(server_defaults)
944
server_config = ConfigParser.SafeConfigParser(server_defaults)
1454
945
del server_defaults
1455
server_config.read(os.path.join(options.configdir,
1456
u"mandos.conf"))
946
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1457
947
# Convert the SafeConfigParser object to a dict
1458
948
server_settings = server_config.defaults()
1459
949
# Use the appropriate methods on the non-string config options
1460
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1461
server_settings[option] = server_config.getboolean(u"DEFAULT",
1462
option)
950
server_settings["debug"] = server_config.getboolean("DEFAULT",
951
"debug")
952
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
953
"use_dbus")
1463
954
if server_settings["port"]:
1464
server_settings["port"] = server_config.getint(u"DEFAULT",
1465
u"port")
955
server_settings["port"] = server_config.getint("DEFAULT",
956
"port")
1466
957
del server_config
1467
958
1468
959
# Override the settings from the config file with command line
1469
960
# options, if set.
1470
for option in (u"interface", u"address", u"port", u"debug",
1471
u"priority", u"servicename", u"configdir",
1472
u"use_dbus", u"use_ipv6"):
961
for option in ("interface", "address", "port", "debug",
962
"priority", "servicename", "configdir",
963
"use_dbus"):
1473
964
value = getattr(options, option)
1474
965
if value is not None:
1475
966
server_settings[option] = value
1476
967
del options
1477
# Force all strings to be unicode
1478
for option in server_settings.keys():
1479
if type(server_settings[option]) is str:
1480
server_settings[option] = unicode(server_settings[option])
1481
968
# Now we have our good server settings in "server_settings"
1482
969
1483
##################################################################
1484
1485
970
# For convenience
1486
debug = server_settings[u"debug"]
1487
use_dbus = server_settings[u"use_dbus"]
1488
use_ipv6 = server_settings[u"use_ipv6"]
971
debug = server_settings["debug"]
972
use_dbus = server_settings["use_dbus"]
973
974
def sigsegvhandler(signum, frame):
975
raise RuntimeError('Segmentation fault')
1489
976
1490
977
if not debug:
1491
978
syslogger.setLevel(logging.WARNING)
1492
979
console.setLevel(logging.WARNING)
980
else:
981
signal.signal(signal.SIGSEGV, sigsegvhandler)
1493
982
1494
if server_settings[u"servicename"] != u"Mandos":
983
if server_settings["servicename"] != "Mandos":
1495
984
syslogger.setFormatter(logging.Formatter
1496
(u'Mandos (%s) [%%(process)d]:'
1497
u' %%(levelname)s: %%(message)s'
1498
% server_settings[u"servicename"]))
985
('Mandos (%s): %%(levelname)s:'
986
' %%(message)s'
987
% server_settings["servicename"]))
1499
988
1500
989
# Parse config file with clients
1501
client_defaults = { u"timeout": u"1h",
1502
u"interval": u"5m",
1503
u"checker": u"fping -q -- %%(host)s",
1504
u"host": u"",
990
client_defaults = { "timeout": "1h",
991
"interval": "5m",
992
"checker": "fping -q -- %%(host)s",
993
"host": "",
1505
994
}
1506
client_config = configparser.SafeConfigParser(client_defaults)
1507
client_config.read(os.path.join(server_settings[u"configdir"],
1508
u"clients.conf"))
1509
1510
global mandos_dbus_service
1511
mandos_dbus_service = None
1512
1513
tcp_server = MandosServer((server_settings[u"address"],
1514
server_settings[u"port"]),
1515
ClientHandler,
1516
interface=server_settings[u"interface"],
1517
use_ipv6=use_ipv6,
1518
gnutls_priority=
1519
server_settings[u"priority"],
1520
use_dbus=use_dbus)
1521
pidfilename = u"/var/run/mandos.pid"
1522
try:
1523
pidfile = open(pidfilename, u"w")
1524
except IOError:
1525
logger.error(u"Could not open file %r", pidfilename)
1526
1527
try:
1528
uid = pwd.getpwnam(u"_mandos").pw_uid
1529
gid = pwd.getpwnam(u"_mandos").pw_gid
995
client_config = ConfigParser.SafeConfigParser(client_defaults)
996
client_config.read(os.path.join(server_settings["configdir"],
997
"clients.conf"))
998
999
clients = Set()
1000
tcp_server = IPv6_TCPServer((server_settings["address"],
1001
server_settings["port"]),
1002
TCP_handler,
1003
settings=server_settings,
1004
clients=clients)
1005
pidfilename = "/var/run/mandos.pid"
1006
try:
1007
pidfile = open(pidfilename, "w")
1008
except IOError, error:
1009
logger.error("Could not open file %r", pidfilename)
1010
1011
try:
1012
uid = pwd.getpwnam("_mandos").pw_uid
1013
gid = pwd.getpwnam("_mandos").pw_gid
1530
1014
except KeyError:
1531
1015
try:
1532
uid = pwd.getpwnam(u"mandos").pw_uid
1533
gid = pwd.getpwnam(u"mandos").pw_gid
1016
uid = pwd.getpwnam("mandos").pw_uid
1017
gid = pwd.getpwnam("mandos").pw_gid
1534
1018
except KeyError:
1535
1019
try:
1536
uid = pwd.getpwnam(u"nobody").pw_uid
1537
gid = pwd.getpwnam(u"nobody").pw_gid
1020
uid = pwd.getpwnam("nobody").pw_uid
1021
gid = pwd.getpwnam("nogroup").pw_gid
1538
1022
except KeyError:
1539
1023
uid = 65534
1540
1024
gid = 65534
1553
1037
1554
1038
@gnutls.library.types.gnutls_log_func
1555
1039
def debug_gnutls(level, string):
1556
logger.debug(u"GnuTLS: %s", string[:-1])
1040
logger.debug("GnuTLS: %s", string[:-1])
1557
1041
1558
1042
(gnutls.library.functions
1559
1043
.gnutls_global_set_log_function(debug_gnutls))
1560
1044
1045
global service
1046
service = AvahiService(name = server_settings["servicename"],
1047
servicetype = "_mandos._tcp", )
1048
if server_settings["interface"]:
1049
service.interface = (if_nametoindex
1050
(server_settings["interface"]))
1051
1561
1052
global main_loop
1053
global bus
1054
global server
1562
1055
# From the Avahi example code
1563
1056
DBusGMainLoop(set_as_default=True )
1564
1057
main_loop = gobject.MainLoop()
1565
1058
bus = dbus.SystemBus()
1059
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1060
avahi.DBUS_PATH_SERVER),
1061
avahi.DBUS_INTERFACE_SERVER)
1566
1062
# End of Avahi example code
1567
1063
if use_dbus:
1568
1064
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1569
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1570
service = AvahiService(name = server_settings[u"servicename"],
1571
servicetype = u"_mandos._tcp",
1572
protocol = protocol, bus = bus)
1573
if server_settings["interface"]:
1574
service.interface = (if_nametoindex
1575
(str(server_settings[u"interface"])))
1576
1065
1577
client_class = Client
1578
if use_dbus:
1579
client_class = functools.partial(ClientDBus, bus = bus)
1580
tcp_server.clients.update(set(
1581
client_class(name = section,
1582
config= dict(client_config.items(section)))
1583
for section in client_config.sections()))
1584
if not tcp_server.clients:
1066
clients.update(Set(Client(name = section,
1067
config
1068
= dict(client_config.items(section)),
1069
use_dbus = use_dbus)
1070
for section in client_config.sections()))
1071
if not clients:
1585
1072
logger.warning(u"No clients defined")
1586
1073
1587
1074
if debug:
1597
1084
daemon()
1598
1085
1599
1086
try:
1600
with closing(pidfile):
1601
pid = os.getpid()
1602
pidfile.write(str(pid) + "\n")
1087
pid = os.getpid()
1088
pidfile.write(str(pid) + "\n")
1089
pidfile.close()
1603
1090
del pidfile
1604
1091
except IOError:
1605
1092
logger.error(u"Could not write to file %r with PID %d",
1611
1098
1612
1099
def cleanup():
1613
1100
"Cleanup function; run on exit"
1614
service.cleanup()
1101
global group
1102
# From the Avahi example code
1103
if not group is None:
1104
group.Free()
1105
group = None
1106
# End of Avahi example code
1615
1107
1616
while tcp_server.clients:
1617
client = tcp_server.clients.pop()
1108
while clients:
1109
client = clients.pop()
1618
1110
client.disable_hook = None
1619
1111
client.disable()
1620
1112
1626
1118
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1627
1119
1628
1120
if use_dbus:
1629
class MandosDBusService(dbus.service.Object):
1121
class MandosServer(dbus.service.Object):
1630
1122
"""A D-Bus proxy object"""
1631
1123
def __init__(self):
1632
dbus.service.Object.__init__(self, bus, u"/")
1124
dbus.service.Object.__init__(self, bus, "/")
1633
1125
_interface = u"se.bsnet.fukt.Mandos"
1634
1126
1635
@dbus.service.signal(_interface, signature=u"oa{sv}")
1127
@dbus.service.signal(_interface, signature="oa{sv}")
1636
1128
def ClientAdded(self, objpath, properties):
1637
1129
"D-Bus signal"
1638
1130
pass
1639
1131
1640
@dbus.service.signal(_interface, signature=u"s")
1641
def ClientNotFound(self, fingerprint):
1642
"D-Bus signal"
1643
pass
1644
1645
@dbus.service.signal(_interface, signature=u"os")
1132
@dbus.service.signal(_interface, signature="os")
1646
1133
def ClientRemoved(self, objpath, name):
1647
1134
"D-Bus signal"
1648
1135
pass
1649
1136
1650
@dbus.service.method(_interface, out_signature=u"ao")
1137
@dbus.service.method(_interface, out_signature="ao")
1651
1138
def GetAllClients(self):
1652
1139
"D-Bus method"
1653
return dbus.Array(c.dbus_object_path
1654
for c in tcp_server.clients)
1140
return dbus.Array(c.dbus_object_path for c in clients)
1655
1141
1656
@dbus.service.method(_interface,
1657
out_signature=u"a{oa{sv}}")
1142
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1658
1143
def GetAllClientsWithProperties(self):
1659
1144
"D-Bus method"
1660
1145
return dbus.Dictionary(
1661
((c.dbus_object_path, c.GetAll(u""))
1662
for c in tcp_server.clients),
1663
signature=u"oa{sv}")
1146
((c.dbus_object_path, c.GetAllProperties())
1147
for c in clients),
1148
signature="oa{sv}")
1664
1149
1665
@dbus.service.method(_interface, in_signature=u"o")
1150
@dbus.service.method(_interface, in_signature="o")
1666
1151
def RemoveClient(self, object_path):
1667
1152
"D-Bus method"
1668
for c in tcp_server.clients:
1153
for c in clients:
1669
1154
if c.dbus_object_path == object_path:
1670
tcp_server.clients.remove(c)
1671
c.remove_from_connection()
1155
clients.remove(c)
1672
1156
# Don't signal anything except ClientRemoved
1673
c.disable(signal=False)
1157
c.use_dbus = False
1158
c.disable()
1674
1159
# Emit D-Bus signal
1675
1160
self.ClientRemoved(object_path, c.name)
1676
1161
return
1678
1163
1679
1164
del _interface
1680
1165
1681
mandos_dbus_service = MandosDBusService()
1166
mandos_server = MandosServer()
1682
1167
1683
for client in tcp_server.clients:
1168
for client in clients:
1684
1169
if use_dbus:
1685
1170
# Emit D-Bus signal
1686
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1687
client.GetAll(u""))
1171
mandos_server.ClientAdded(client.dbus_object_path,
1172
client.GetAllProperties())
1688
1173
client.enable()
1689
1174
1690
1175
tcp_server.enable()
1692
1177
1693
1178
# Find out what port we got
1694
1179
service.port = tcp_server.socket.getsockname()[1]
1695
if use_ipv6:
1696
logger.info(u"Now listening on address %r, port %d,"
1697
" flowinfo %d, scope_id %d"
1698
% tcp_server.socket.getsockname())
1699
else: # IPv4
1700
logger.info(u"Now listening on address %r, port %d"
1701
% tcp_server.socket.getsockname())
1180
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1181
u" scope_id %d" % tcp_server.socket.getsockname())
1702
1182
1703
1183
#service.interface = tcp_server.socket.getsockname()[3]
1704
1184
1705
1185
try:
1706
1186
# From the Avahi example code
1187
server.connect_to_signal("StateChanged", server_state_changed)
1707
1188
try:
1708
service.activate()
1189
server_state_changed(server.GetState())
1709
1190
except dbus.exceptions.DBusException, error:
1710
1191
logger.critical(u"DBusException: %s", error)
1711
1192
sys.exit(1)
1723
1204
sys.exit(1)
1724
1205
except KeyboardInterrupt:
1725
1206
if debug:
1726
print >> sys.stderr
1727
logger.debug(u"Server received KeyboardInterrupt")
1728
logger.debug(u"Server exiting")
1207
print
1729
1208
1730
1209
if __name__ == '__main__':
1731
1210
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0