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- Committer: Teddy Hogeborn
- Date: 2009-04-01 03:37:45 UTC
- Revision ID: teddy@fukt.bsnet.se-20090401033745-c89k6bij5opdm1rk
* mandos (ClientDBus.__del__): Bug fix: Correct mispasted code, and do
not try to call
dbus.service.Object.__del__() if it
does not exist.
(ClientDBus.start_checker): Simplify logic.
not try to call
dbus.service.Object.__del__() if it
does not exist.
(ClientDBus.start_checker): Simplify logic.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
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
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
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
55
56
import logging
56
57
import logging.handlers
57
58
import pwd
58
import contextlib
59
import struct
60
import fcntl
61
import functools
62
import cPickle as pickle
63
import multiprocessing
59
from contextlib import closing
64
60
65
61
import dbus
66
62
import dbus.service
69
65
from dbus.mainloop.glib import DBusGMainLoop
70
66
import ctypes
71
67
import ctypes.util
72
import xml.dom.minidom
73
import inspect
74
75
try:
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
except AttributeError:
78
try:
79
from IN import SO_BINDTODEVICE
80
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.1"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
68
69
version = "1.0.8"
70
71
logger = logging.Logger('mandos')
88
72
syslogger = (logging.handlers.SysLogHandler
89
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
74
address = "/dev/log"))
91
75
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
94
78
logger.addHandler(syslogger)
95
79
96
80
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
100
83
logger.addHandler(console)
101
84
102
85
class AvahiError(Exception):
115
98
116
99
class AvahiService(object):
117
100
"""An Avahi (Zeroconf) service.
118
119
101
Attributes:
120
102
interface: integer; avahi.IF_UNSPEC or an interface index.
121
103
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
104
name: string; Example: 'Mandos'
105
type: string; Example: '_mandos._tcp'.
124
106
See <http://www.dns-sd.org/ServiceTypes.html>
125
107
port: integer; what port to announce
126
108
TXT: list of strings; TXT record for the service
129
111
max_renames: integer; maximum number of renames
130
112
rename_count: integer; counter so we only rename after collisions
131
113
a sensible number of times
132
group: D-Bus Entry Group
133
server: D-Bus Server
134
bus: dbus.SystemBus()
135
114
"""
136
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
116
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
140
119
self.interface = interface
141
120
self.name = name
142
121
self.type = servicetype
147
126
self.rename_count = 0
148
127
self.max_renames = max_renames
149
128
self.protocol = protocol
150
self.group = None # our entry group
151
self.server = None
152
self.bus = bus
153
129
def rename(self):
154
130
"""Derived from the Avahi example code"""
155
131
if self.rename_count >= self.max_renames:
157
133
u" after %i retries, exiting.",
158
134
self.rename_count)
159
135
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
136
self.name = server.GetAlternativeServiceName(self.name)
161
137
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
138
str(self.name))
163
139
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
140
('Mandos (%s) [%%(process)d]:'
141
' %%(levelname)s: %%(message)s'
166
142
% self.name))
167
143
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
144
self.add()
174
145
self.rename_count += 1
175
146
def remove(self):
176
147
"""Derived from the Avahi example code"""
177
if self.group is not None:
178
self.group.Reset()
148
if group is not None:
149
group.Reset()
179
150
def add(self):
180
151
"""Derived from the Avahi example code"""
181
if self.group is None:
182
self.group = dbus.Interface(
183
self.bus.get_object(avahi.DBUS_NAME,
184
self.server.EntryGroupNew()),
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
152
global group
153
if group is None:
154
group = dbus.Interface(bus.get_object
155
(avahi.DBUS_NAME,
156
server.EntryGroupNew()),
157
avahi.DBUS_INTERFACE_ENTRY_GROUP)
158
group.connect_to_signal('StateChanged',
159
entry_group_state_changed)
189
160
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
190
self.name, self.type)
191
self.group.AddService(
192
self.interface,
193
self.protocol,
194
dbus.UInt32(0), # flags
195
self.name, self.type,
196
self.domain, self.host,
197
dbus.UInt16(self.port),
198
avahi.string_array_to_txt_array(self.TXT))
199
self.group.Commit()
200
def entry_group_state_changed(self, state, error):
201
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
206
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
208
self.rename()
209
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
214
def cleanup(self):
215
"""Derived from the Avahi example code"""
216
if self.group is not None:
217
self.group.Free()
218
self.group = None
219
def server_state_changed(self, state):
220
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
225
elif state == avahi.SERVER_RUNNING:
226
self.add()
227
def activate(self):
228
"""Derived from the Avahi example code"""
229
if self.server is None:
230
self.server = dbus.Interface(
231
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
233
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
236
self.server_state_changed(self.server.GetState())
161
service.name, service.type)
162
group.AddService(
163
self.interface, # interface
164
self.protocol, # protocol
165
dbus.UInt32(0), # flags
166
self.name, self.type,
167
self.domain, self.host,
168
dbus.UInt16(self.port),
169
avahi.string_array_to_txt_array(self.TXT))
170
group.Commit()
171
172
# From the Avahi example code:
173
group = None # our entry group
174
# End of Avahi example code
175
176
177
def _datetime_to_dbus(dt, variant_level=0):
178
"""Convert a UTC datetime.datetime() to a D-Bus type."""
179
return dbus.String(dt.isoformat(), variant_level=variant_level)
237
180
238
181
239
182
class Client(object):
240
183
"""A representation of a client host served by this server.
241
242
184
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
244
approval_delay: datetime.timedelta(); Time to wait for approval
245
approval_duration: datetime.timedelta(); Duration of one approval
185
name: string; from the config file, used in log messages and
186
D-Bus identifiers
187
fingerprint: string (40 or 32 hexadecimal digits); used to
188
uniquely identify the client
189
secret: bytestring; sent verbatim (over TLS) to client
190
host: string; available for use by the checker command
191
created: datetime.datetime(); (UTC) object creation
192
last_enabled: datetime.datetime(); (UTC)
193
enabled: bool()
194
last_checked_ok: datetime.datetime(); (UTC) or None
195
timeout: datetime.timedelta(); How long from last_checked_ok
196
until this client is invalid
197
interval: datetime.timedelta(); How often to start a new checker
198
disable_hook: If set, called by disable() as disable_hook(self)
246
199
checker: subprocess.Popen(); a running checker process used
247
200
to see if the client lives.
248
201
'None' if no process is running.
249
checker_callback_tag: a gobject event source tag, or None
250
checker_command: string; External command which is run to check
251
if client lives. %() expansions are done at
202
checker_initiator_tag: a gobject event source tag, or None
203
disable_initiator_tag: - '' -
204
checker_callback_tag: - '' -
205
checker_command: string; External command which is run to check if
206
client lives. %() expansions are done at
252
207
runtime with vars(self) as dict, so that for
253
208
instance %(name)s can be used in the command.
254
checker_initiator_tag: a gobject event source tag, or None
255
created: datetime.datetime(); (UTC) object creation
256
209
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
259
enabled: bool()
260
fingerprint: string (40 or 32 hexadecimal digits); used to
261
uniquely identify the client
262
host: string; available for use by the checker command
263
interval: datetime.timedelta(); How often to start a new checker
264
last_approval_request: datetime.datetime(); (UTC) or None
265
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
267
name: string; from the config file, used in log messages and
268
D-Bus identifiers
269
secret: bytestring; sent verbatim (over TLS) to client
270
timeout: datetime.timedelta(); How long from last_checked_ok
271
until this client is disabled
272
runtime_expansions: Allowed attributes for runtime expansion.
273
210
"""
274
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
211
def timeout_milliseconds(self):
288
212
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
213
return ((self.timeout.days * 24 * 60 * 60 * 1000)
214
+ (self.timeout.seconds * 1000)
215
+ (self.timeout.microseconds // 1000))
290
216
291
217
def interval_milliseconds(self):
292
218
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
219
return ((self.interval.days * 24 * 60 * 60 * 1000)
220
+ (self.interval.seconds * 1000)
221
+ (self.interval.microseconds // 1000))
297
222
298
223
def __init__(self, name = None, disable_hook=None, config=None):
299
224
"""Note: the 'checker' key in 'config' sets the
306
231
# Uppercase and remove spaces from fingerprint for later
307
232
# comparison purposes with return value from the fingerprint()
308
233
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
234
self.fingerprint = (config["fingerprint"].upper()
310
235
.replace(u" ", u""))
311
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
240
with closing(open(os.path.expanduser
241
(os.path.expandvars
242
(config["secfile"])))) as secfile:
318
243
self.secret = secfile.read()
319
244
else:
320
245
raise TypeError(u"No secret or secfile for client %s"
321
246
% self.name)
322
self.host = config.get(u"host", u"")
247
self.host = config.get("host", "")
323
248
self.created = datetime.datetime.utcnow()
324
249
self.enabled = False
325
self.last_approval_request = None
326
250
self.last_enabled = None
327
251
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
330
254
self.disable_hook = disable_hook
331
255
self.checker = None
332
256
self.checker_initiator_tag = None
333
257
self.disable_initiator_tag = None
334
258
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
259
self.checker_command = config["checker"]
336
260
self.current_checker_command = None
337
261
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
341
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
347
262
348
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
353
263
def enable(self):
354
264
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
356
# Already enabled
357
return
358
self.send_changedstate()
359
265
self.last_enabled = datetime.datetime.utcnow()
360
266
# Schedule a new checker to be started an 'interval' from now,
361
267
# and every interval from then on.
362
268
self.checker_initiator_tag = (gobject.timeout_add
363
269
(self.interval_milliseconds(),
364
270
self.start_checker))
271
# Also start a new checker *right now*.
272
self.start_checker()
365
273
# Schedule a disable() when 'timeout' has passed
366
274
self.disable_initiator_tag = (gobject.timeout_add
367
275
(self.timeout_milliseconds(),
368
276
self.disable))
369
277
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
372
278
373
def disable(self, quiet=True):
279
def disable(self):
374
280
"""Disable this client."""
375
281
if not getattr(self, "enabled", False):
376
282
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
283
logger.info(u"Disabling client %s", self.name)
284
if getattr(self, "disable_initiator_tag", False):
382
285
gobject.source_remove(self.disable_initiator_tag)
383
286
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
287
if getattr(self, "checker_initiator_tag", False):
385
288
gobject.source_remove(self.checker_initiator_tag)
386
289
self.checker_initiator_tag = None
387
290
self.stop_checker()
414
317
415
318
def checked_ok(self):
416
319
"""Bump up the timeout for this client.
417
418
320
This should only be called when the client has been seen,
419
321
alive and well.
420
322
"""
424
326
(self.timeout_milliseconds(),
425
327
self.disable))
426
328
427
def need_approval(self):
428
self.last_approval_request = datetime.datetime.utcnow()
429
430
329
def start_checker(self):
431
330
"""Start a new checker subprocess if one is not running.
432
433
331
If a checker already exists, leave it running and do
434
332
nothing."""
435
333
# The reason for not killing a running checker is that if we
438
336
# client would inevitably timeout, since no checker would get
439
337
# a chance to run to completion. If we instead leave running
440
338
# checkers alone, the checker would have to take more time
441
# than 'timeout' for the client to be disabled, which is as it
442
# should be.
339
# than 'timeout' for the client to be declared invalid, which
340
# is as it should be.
443
341
444
342
# If a checker exists, make sure it is not a zombie
445
try:
343
if self.checker is not None:
446
344
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
345
if pid:
453
logger.warning(u"Checker was a zombie")
346
logger.warning("Checker was a zombie")
454
347
gobject.source_remove(self.checker_callback_tag)
455
348
self.checker_callback(pid, status,
456
349
self.current_checker_command)
461
354
command = self.checker_command % self.host
462
355
except TypeError:
463
356
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
357
escaped_attrs = dict((key, re.escape(str(val)))
358
for key, val in
359
vars(self).iteritems())
472
360
try:
473
361
command = self.checker_command % escaped_attrs
474
362
except TypeError, error:
485
373
# always replaced by /dev/null.)
486
374
self.checker = subprocess.Popen(command,
487
375
close_fds=True,
488
shell=True, cwd=u"/")
376
shell=True, cwd="/")
489
377
self.checker_callback_tag = (gobject.child_watch_add
490
378
(self.checker.pid,
491
379
self.checker_callback,
507
395
if self.checker_callback_tag:
508
396
gobject.source_remove(self.checker_callback_tag)
509
397
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
398
if getattr(self, "checker", None) is None:
511
399
return
512
400
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
401
try:
514
402
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
403
#os.sleep(0.5)
516
404
#if self.checker.poll() is None:
517
405
# os.kill(self.checker.pid, signal.SIGKILL)
518
406
except OSError, error:
519
407
if error.errno != errno.ESRCH: # No such process
520
408
raise
521
409
self.checker = None
522
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
525
"""Decorators for marking methods of a DBusObjectWithProperties to
526
become properties on the D-Bus.
527
528
The decorated method will be called with no arguments by "Get"
529
and with one argument by "Set".
530
531
The parameters, where they are supported, are the same as
532
dbus.service.method, except there is only "signature", since the
533
type from Get() and the type sent to Set() is the same.
534
"""
535
# Encoding deeply encoded byte arrays is not supported yet by the
536
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
540
def decorator(func):
541
func._dbus_is_property = True
542
func._dbus_interface = dbus_interface
543
func._dbus_signature = signature
544
func._dbus_access = access
545
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
547
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
550
return decorator
551
552
553
class DBusPropertyException(dbus.exceptions.DBusException):
554
"""A base class for D-Bus property-related exceptions
555
"""
556
def __unicode__(self):
557
return unicode(str(self))
558
559
560
class DBusPropertyAccessException(DBusPropertyException):
561
"""A property's access permissions disallows an operation.
562
"""
563
pass
564
565
566
class DBusPropertyNotFound(DBusPropertyException):
567
"""An attempt was made to access a non-existing property.
568
"""
569
pass
570
571
572
class DBusObjectWithProperties(dbus.service.Object):
573
"""A D-Bus object with properties.
574
575
Classes inheriting from this can use the dbus_service_property
576
decorator to expose methods as D-Bus properties. It exposes the
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
"""
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
591
def _get_dbus_property(self, interface_name, property_name):
592
"""Returns a bound method if one exists which is a D-Bus
593
property with the specified name and interface.
594
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
605
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
612
def Get(self, interface_name, property_name):
613
"""Standard D-Bus property Get() method, see D-Bus standard.
614
"""
615
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
617
raise DBusPropertyAccessException(property_name)
618
value = prop()
619
if not hasattr(value, u"variant_level"):
620
return value
621
return type(value)(value, variant_level=value.variant_level+1)
622
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
624
def Set(self, interface_name, property_name, value):
625
"""Standard D-Bus property Set() method, see D-Bus standard.
626
"""
627
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
629
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
631
# The byte_arrays option is not supported yet on
632
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
637
prop(value)
638
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
641
def GetAll(self, interface_name):
642
"""Standard D-Bus property GetAll() method, see D-Bus
643
standard.
644
645
Note: Will not include properties with access="write".
646
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
649
if (interface_name
650
and interface_name != prop._dbus_interface):
651
# Interface non-empty but did not match
652
continue
653
# Ignore write-only properties
654
if prop._dbus_access == u"write":
655
continue
656
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
659
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
663
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
666
path_keyword='object_path',
667
connection_keyword='connection')
668
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
670
"""
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
673
try:
674
document = xml.dom.minidom.parseString(xmlstring)
675
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
680
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
682
for tag in (make_tag(document, name, prop)
683
for name, prop
684
in self._get_all_dbus_properties()
685
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
687
if_tag.appendChild(tag)
688
# Add the names to the return values for the
689
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
712
class ClientDBus(Client, DBusObjectWithProperties):
410
411
def still_valid(self):
412
"""Has the timeout not yet passed for this client?"""
413
if not getattr(self, "enabled", False):
414
return False
415
now = datetime.datetime.utcnow()
416
if self.last_checked_ok is None:
417
return now < (self.created + self.timeout)
418
else:
419
return now < (self.last_checked_ok + self.timeout)
420
421
422
class ClientDBus(Client, dbus.service.Object):
713
423
"""A Client class using D-Bus
714
715
424
Attributes:
716
dbus_object_path: dbus.ObjectPath
717
bus: dbus.SystemBus()
425
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
718
426
"""
719
720
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
722
723
427
# dbus.service.Object doesn't use super(), so we can't either.
724
428
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
self.bus = bus
429
def __init__(self, *args, **kwargs):
728
430
Client.__init__(self, *args, **kwargs)
729
431
# Only now, when this client is initialized, can it show up on
730
432
# the D-Bus
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
433
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
736
DBusObjectWithProperties.__init__(self, self.bus,
737
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
434
("/clients/"
435
+ self.name.replace(".", "_")))
436
dbus.service.Object.__init__(self, bus,
437
self.dbus_object_path)
761
438
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
439
oldstate = getattr(self, "enabled", False)
763
440
r = Client.enable(self)
764
441
if oldstate != self.enabled:
765
442
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
443
self.PropertyChanged(dbus.String(u"enabled"),
767
444
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
445
self.PropertyChanged(dbus.String(u"last_enabled"),
446
(_datetime_to_dbus(self.last_enabled,
447
variant_level=1)))
772
448
return r
773
449
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
450
def disable(self, signal = True):
451
oldstate = getattr(self, "enabled", False)
452
r = Client.disable(self)
453
if signal and oldstate != self.enabled:
778
454
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
455
self.PropertyChanged(dbus.String(u"enabled"),
780
456
dbus.Boolean(False, variant_level=1))
781
457
return r
782
458
785
461
self.remove_from_connection()
786
462
except LookupError:
787
463
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
464
if hasattr(dbus.service.Object, "__del__"):
465
dbus.service.Object.__del__(self, *args, **kwargs)
790
466
Client.__del__(self, *args, **kwargs)
791
467
792
468
def checker_callback(self, pid, condition, command,
794
470
self.checker_callback_tag = None
795
471
self.checker = None
796
472
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
473
self.PropertyChanged(dbus.String(u"checker_running"),
798
474
dbus.Boolean(False, variant_level=1))
799
475
if os.WIFEXITED(condition):
800
476
exitstatus = os.WEXITSTATUS(condition)
815
491
r = Client.checked_ok(self, *args, **kwargs)
816
492
# Emit D-Bus signal
817
493
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
494
dbus.String(u"last_checked_ok"),
495
(_datetime_to_dbus(self.last_checked_ok,
496
variant_level=1)))
830
497
return r
831
498
832
499
def start_checker(self, *args, **kwargs):
842
509
# Emit D-Bus signal
843
510
self.CheckerStarted(self.current_checker_command)
844
511
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
512
dbus.String("checker_running"),
846
513
dbus.Boolean(True, variant_level=1))
847
514
return r
848
515
849
516
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
517
old_checker = getattr(self, "checker", None)
851
518
r = Client.stop_checker(self, *args, **kwargs)
852
519
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
520
and getattr(self, "checker", None) is None):
521
self.PropertyChanged(dbus.String(u"checker_running"),
855
522
dbus.Boolean(False, variant_level=1))
856
523
return r
857
858
def _reset_approved(self):
859
self._approved = None
860
return False
861
862
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
870
## D-Bus methods, signals & properties
524
525
## D-Bus methods & signals
871
526
_interface = u"se.bsnet.fukt.Mandos.Client"
872
527
873
## Signals
528
# CheckedOK - method
529
CheckedOK = dbus.service.method(_interface)(checked_ok)
530
CheckedOK.__name__ = "CheckedOK"
874
531
875
532
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
533
@dbus.service.signal(_interface, signature="nxs")
877
534
def CheckerCompleted(self, exitcode, waitstatus, command):
878
535
"D-Bus signal"
879
536
pass
880
537
881
538
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
539
@dbus.service.signal(_interface, signature="s")
883
540
def CheckerStarted(self, command):
884
541
"D-Bus signal"
885
542
pass
886
543
544
# GetAllProperties - method
545
@dbus.service.method(_interface, out_signature="a{sv}")
546
def GetAllProperties(self):
547
"D-Bus method"
548
return dbus.Dictionary({
549
dbus.String("name"):
550
dbus.String(self.name, variant_level=1),
551
dbus.String("fingerprint"):
552
dbus.String(self.fingerprint, variant_level=1),
553
dbus.String("host"):
554
dbus.String(self.host, variant_level=1),
555
dbus.String("created"):
556
_datetime_to_dbus(self.created, variant_level=1),
557
dbus.String("last_enabled"):
558
(_datetime_to_dbus(self.last_enabled,
559
variant_level=1)
560
if self.last_enabled is not None
561
else dbus.Boolean(False, variant_level=1)),
562
dbus.String("enabled"):
563
dbus.Boolean(self.enabled, variant_level=1),
564
dbus.String("last_checked_ok"):
565
(_datetime_to_dbus(self.last_checked_ok,
566
variant_level=1)
567
if self.last_checked_ok is not None
568
else dbus.Boolean (False, variant_level=1)),
569
dbus.String("timeout"):
570
dbus.UInt64(self.timeout_milliseconds(),
571
variant_level=1),
572
dbus.String("interval"):
573
dbus.UInt64(self.interval_milliseconds(),
574
variant_level=1),
575
dbus.String("checker"):
576
dbus.String(self.checker_command,
577
variant_level=1),
578
dbus.String("checker_running"):
579
dbus.Boolean(self.checker is not None,
580
variant_level=1),
581
dbus.String("object_path"):
582
dbus.ObjectPath(self.dbus_object_path,
583
variant_level=1)
584
}, signature="sv")
585
586
# IsStillValid - method
587
@dbus.service.method(_interface, out_signature="b")
588
def IsStillValid(self):
589
return self.still_valid()
590
887
591
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
592
@dbus.service.signal(_interface, signature="sv")
889
593
def PropertyChanged(self, property, value):
890
594
"D-Bus signal"
891
595
pass
892
596
893
# GotSecret - signal
597
# ReceivedSecret - signal
894
598
@dbus.service.signal(_interface)
895
def GotSecret(self):
896
"""D-Bus signal
897
Is sent after a successful transfer of secret from the Mandos
898
server to mandos-client
899
"""
599
def ReceivedSecret(self):
600
"D-Bus signal"
900
601
pass
901
602
902
603
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
904
def Rejected(self, reason):
604
@dbus.service.signal(_interface)
605
def Rejected(self):
905
606
"D-Bus signal"
906
607
pass
907
608
908
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
910
def NeedApproval(self, timeout, default):
911
"D-Bus signal"
912
return self.need_approval()
913
914
## Methods
915
916
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
918
def Approve(self, value):
919
self.approve(value)
920
921
# CheckedOK - method
922
@dbus.service.method(_interface)
923
def CheckedOK(self):
924
return self.checked_ok()
609
# SetChecker - method
610
@dbus.service.method(_interface, in_signature="s")
611
def SetChecker(self, checker):
612
"D-Bus setter method"
613
self.checker_command = checker
614
# Emit D-Bus signal
615
self.PropertyChanged(dbus.String(u"checker"),
616
dbus.String(self.checker_command,
617
variant_level=1))
618
619
# SetHost - method
620
@dbus.service.method(_interface, in_signature="s")
621
def SetHost(self, host):
622
"D-Bus setter method"
623
self.host = host
624
# Emit D-Bus signal
625
self.PropertyChanged(dbus.String(u"host"),
626
dbus.String(self.host, variant_level=1))
627
628
# SetInterval - method
629
@dbus.service.method(_interface, in_signature="t")
630
def SetInterval(self, milliseconds):
631
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
632
# Emit D-Bus signal
633
self.PropertyChanged(dbus.String(u"interval"),
634
(dbus.UInt64(self.interval_milliseconds(),
635
variant_level=1)))
636
637
# SetSecret - method
638
@dbus.service.method(_interface, in_signature="ay",
639
byte_arrays=True)
640
def SetSecret(self, secret):
641
"D-Bus setter method"
642
self.secret = str(secret)
643
644
# SetTimeout - method
645
@dbus.service.method(_interface, in_signature="t")
646
def SetTimeout(self, milliseconds):
647
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
648
# Emit D-Bus signal
649
self.PropertyChanged(dbus.String(u"timeout"),
650
(dbus.UInt64(self.timeout_milliseconds(),
651
variant_level=1)))
925
652
926
653
# Enable - method
927
@dbus.service.method(_interface)
928
def Enable(self):
929
"D-Bus method"
930
self.enable()
654
Enable = dbus.service.method(_interface)(enable)
655
Enable.__name__ = "Enable"
931
656
932
657
# StartChecker - method
933
658
@dbus.service.method(_interface)
942
667
self.disable()
943
668
944
669
# StopChecker - method
945
@dbus.service.method(_interface)
946
def StopChecker(self):
947
self.stop_checker()
948
949
## Properties
950
951
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
953
def ApprovalPending_dbus_property(self):
954
return dbus.Boolean(bool(self.approvals_pending))
955
956
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
959
def ApprovedByDefault_dbus_property(self, value=None):
960
if value is None: # get
961
return dbus.Boolean(self.approved_by_default)
962
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
967
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
970
def ApprovalDelay_dbus_property(self, value=None):
971
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
978
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
981
def ApprovalDuration_dbus_property(self, value=None):
982
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
990
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
992
def Name_dbus_property(self):
993
return dbus.String(self.name)
994
995
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
997
def Fingerprint_dbus_property(self):
998
return dbus.String(self.fingerprint)
999
1000
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1003
def Host_dbus_property(self, value=None):
1004
if value is None: # get
1005
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1010
1011
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1013
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1015
1016
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1018
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
1023
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1026
def Enabled_dbus_property(self, value=None):
1027
if value is None: # get
1028
return dbus.Boolean(self.enabled)
1029
if value:
1030
self.enable()
1031
else:
1032
self.disable()
1033
1034
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1037
def LastCheckedOK_dbus_property(self, value=None):
1038
if value is not None:
1039
self.checked_ok()
1040
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1045
1046
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1048
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1054
1055
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1058
def Timeout_dbus_property(self, value=None):
1059
if value is None: # get
1060
return dbus.UInt64(self.timeout_milliseconds())
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1082
1083
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1086
def Interval_dbus_property(self, value=None):
1087
if value is None: # get
1088
return dbus.UInt64(self.interval_milliseconds())
1089
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1094
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1101
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1104
def Checker_dbus_property(self, value=None):
1105
if value is None: # get
1106
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1112
1113
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1116
def CheckerRunning_dbus_property(self, value=None):
1117
if value is None: # get
1118
return dbus.Boolean(self.checker is not None)
1119
if value:
1120
self.start_checker()
1121
else:
1122
self.stop_checker()
1123
1124
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1126
def ObjectPath_dbus_property(self):
1127
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1129
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1132
def Secret_dbus_property(self, value):
1133
self.secret = str(value)
670
StopChecker = dbus.service.method(_interface)(stop_checker)
671
StopChecker.__name__ = "StopChecker"
1134
672
1135
673
del _interface
1136
674
1137
675
1138
class ProxyClient(object):
1139
def __init__(self, child_pipe, fpr, address):
1140
self._pipe = child_pipe
1141
self._pipe.send(('init', fpr, address))
1142
if not self._pipe.recv():
1143
raise KeyError()
1144
1145
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1147
return super(ProxyClient, self).__getattribute__(name)
1148
self._pipe.send(('getattr', name))
1149
data = self._pipe.recv()
1150
if data[0] == 'data':
1151
return data[1]
1152
if data[0] == 'function':
1153
def func(*args, **kwargs):
1154
self._pipe.send(('funcall', name, args, kwargs))
1155
return self._pipe.recv()[1]
1156
return func
1157
1158
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1160
return super(ProxyClient, self).__setattr__(name, value)
1161
self._pipe.send(('setattr', name, value))
1162
1163
1164
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
"""A class to handle client connections.
1166
1167
Instantiated once for each connection to handle it.
676
def peer_certificate(session):
677
"Return the peer's OpenPGP certificate as a bytestring"
678
# If not an OpenPGP certificate...
679
if (gnutls.library.functions
680
.gnutls_certificate_type_get(session._c_object)
681
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
682
# ...do the normal thing
683
return session.peer_certificate
684
list_size = ctypes.c_uint(1)
685
cert_list = (gnutls.library.functions
686
.gnutls_certificate_get_peers
687
(session._c_object, ctypes.byref(list_size)))
688
if not bool(cert_list) and list_size.value != 0:
689
raise gnutls.errors.GNUTLSError("error getting peer"
690
" certificate")
691
if list_size.value == 0:
692
return None
693
cert = cert_list[0]
694
return ctypes.string_at(cert.data, cert.size)
695
696
697
def fingerprint(openpgp):
698
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
699
# New GnuTLS "datum" with the OpenPGP public key
700
datum = (gnutls.library.types
701
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
702
ctypes.POINTER
703
(ctypes.c_ubyte)),
704
ctypes.c_uint(len(openpgp))))
705
# New empty GnuTLS certificate
706
crt = gnutls.library.types.gnutls_openpgp_crt_t()
707
(gnutls.library.functions
708
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
709
# Import the OpenPGP public key into the certificate
710
(gnutls.library.functions
711
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
712
gnutls.library.constants
713
.GNUTLS_OPENPGP_FMT_RAW))
714
# Verify the self signature in the key
715
crtverify = ctypes.c_uint()
716
(gnutls.library.functions
717
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
718
if crtverify.value != 0:
719
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
720
raise gnutls.errors.CertificateSecurityError("Verify failed")
721
# New buffer for the fingerprint
722
buf = ctypes.create_string_buffer(20)
723
buf_len = ctypes.c_size_t()
724
# Get the fingerprint from the certificate into the buffer
725
(gnutls.library.functions
726
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
727
ctypes.byref(buf_len)))
728
# Deinit the certificate
729
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
730
# Convert the buffer to a Python bytestring
731
fpr = ctypes.string_at(buf, buf_len.value)
732
# Convert the bytestring to hexadecimal notation
733
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
734
return hex_fpr
735
736
737
class TCP_handler(SocketServer.BaseRequestHandler, object):
738
"""A TCP request handler class.
739
Instantiated by IPv6_TCPServer for each request to handle it.
1168
740
Note: This will run in its own forked process."""
1169
741
1170
742
def handle(self):
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1175
self.server.child_pipe.fileno())
1176
743
logger.info(u"TCP connection from: %s",
744
unicode(self.client_address))
745
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
746
# Open IPC pipe to parent process
747
with closing(os.fdopen(self.server.pipe[1], "w", 1)) as ipc:
1177
748
session = (gnutls.connection
1178
749
.ClientSession(self.request,
1179
750
gnutls.connection
1180
751
.X509Credentials()))
1181
752
753
line = self.request.makefile().readline()
754
logger.debug(u"Protocol version: %r", line)
755
try:
756
if int(line.strip().split()[0]) > 1:
757
raise RuntimeError
758
except (ValueError, IndexError, RuntimeError), error:
759
logger.error(u"Unknown protocol version: %s", error)
760
return
761
1182
762
# Note: gnutls.connection.X509Credentials is really a
1183
763
# generic GnuTLS certificate credentials object so long as
1184
764
# no X.509 keys are added to it. Therefore, we can use it
1185
765
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
766
767
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
768
# "+AES-256-CBC", "+SHA1",
769
# "+COMP-NULL", "+CTYPE-OPENPGP",
770
# "+DHE-DSS"))
1191
771
# Use a fallback default, since this MUST be set.
1192
priority = self.server.gnutls_priority
1193
if priority is None:
1194
priority = u"NORMAL"
772
priority = self.server.settings.get("priority", "NORMAL")
1195
773
(gnutls.library.functions
1196
774
.gnutls_priority_set_direct(session._c_object,
1197
775
priority, None))
1198
1199
# Start communication using the Mandos protocol
1200
# Get protocol number
1201
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1203
try:
1204
if int(line.strip().split()[0]) > 1:
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1208
return
1209
1210
# Start GnuTLS connection
776
1211
777
try:
1212
778
session.handshake()
1213
779
except gnutls.errors.GNUTLSError, error:
1216
782
# established. Just abandon the request.
1217
783
return
1218
784
logger.debug(u"Handshake succeeded")
1219
1220
approval_required = False
1221
785
try:
1222
try:
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1227
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1230
try:
1231
client = ProxyClient(child_pipe, fpr,
1232
self.client_address)
1233
except KeyError:
1234
return
1235
1236
if client.approval_delay:
1237
delay = client.approval_delay
1238
client.approvals_pending += 1
1239
approval_required = True
1240
1241
while True:
1242
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
1245
if self.server.use_dbus:
1246
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1248
return
1249
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
1252
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1255
client.name)
1256
if self.server.use_dbus:
1257
# Emit D-Bus signal
1258
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
1261
else:
1262
logger.warning(u"Client %s was not approved",
1263
client.name)
1264
if self.server.use_dbus:
1265
# Emit D-Bus signal
1266
client.Rejected("Denied")
1267
return
1268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
time = datetime.datetime.now()
1272
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1274
client.changedstate.release()
1275
time2 = datetime.datetime.now()
1276
if (time2 - time) >= delay:
1277
if not client.approved_by_default:
1278
logger.warning("Client %s timed out while"
1279
" waiting for approval",
1280
client.name)
1281
if self.server.use_dbus:
1282
# Emit D-Bus signal
1283
client.Rejected("Approval timed out")
1284
return
1285
else:
1286
break
1287
else:
1288
delay -= time2 - time
1289
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1305
if self.server.use_dbus:
1306
# Emit D-Bus signal
1307
client.GotSecret()
1308
1309
finally:
1310
if approval_required:
1311
client.approvals_pending -= 1
1312
try:
1313
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1316
1317
@staticmethod
1318
def peer_certificate(session):
1319
"Return the peer's OpenPGP certificate as a bytestring"
1320
# If not an OpenPGP certificate...
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1323
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
# ...do the normal thing
1325
return session.peer_certificate
1326
list_size = ctypes.c_uint(1)
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
1329
(session._c_object, ctypes.byref(list_size)))
1330
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1333
if list_size.value == 0:
1334
return None
1335
cert = cert_list[0]
1336
return ctypes.string_at(cert.data, cert.size)
1337
1338
@staticmethod
1339
def fingerprint(openpgp):
1340
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1341
# New GnuTLS "datum" with the OpenPGP public key
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
1347
# New empty GnuTLS certificate
1348
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1351
# Import the OpenPGP public key into the certificate
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
1356
# Verify the self signature in the key
1357
crtverify = ctypes.c_uint()
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
1361
if crtverify.value != 0:
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1365
# New buffer for the fingerprint
1366
buf = ctypes.create_string_buffer(20)
1367
buf_len = ctypes.c_size_t()
1368
# Get the fingerprint from the certificate into the buffer
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
1372
# Deinit the certificate
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1374
# Convert the buffer to a Python bytestring
1375
fpr = ctypes.string_at(buf, buf_len.value)
1376
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1378
return hex_fpr
1379
1380
1381
class MultiprocessingMixIn(object):
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1383
def sub_process_main(self, request, address):
1384
try:
1385
self.finish_request(request, address)
1386
except:
1387
self.handle_error(request, address)
1388
self.close_request(request)
1389
1390
def process_request(self, request, address):
1391
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1394
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
""" adds a pipe to the MixIn """
786
fpr = fingerprint(peer_certificate(session))
787
except (TypeError, gnutls.errors.GNUTLSError), error:
788
logger.warning(u"Bad certificate: %s", error)
789
session.bye()
790
return
791
logger.debug(u"Fingerprint: %s", fpr)
792
793
for c in self.server.clients:
794
if c.fingerprint == fpr:
795
client = c
796
break
797
else:
798
logger.warning(u"Client not found for fingerprint: %s",
799
fpr)
800
ipc.write("NOTFOUND %s\n" % fpr)
801
session.bye()
802
return
803
# Have to check if client.still_valid(), since it is
804
# possible that the client timed out while establishing
805
# the GnuTLS session.
806
if not client.still_valid():
807
logger.warning(u"Client %(name)s is invalid",
808
vars(client))
809
ipc.write("INVALID %s\n" % client.name)
810
session.bye()
811
return
812
ipc.write("SENDING %s\n" % client.name)
813
sent_size = 0
814
while sent_size < len(client.secret):
815
sent = session.send(client.secret[sent_size:])
816
logger.debug(u"Sent: %d, remaining: %d",
817
sent, len(client.secret)
818
- (sent_size + sent))
819
sent_size += sent
820
session.bye()
821
822
823
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
824
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
825
Assumes a gobject.MainLoop event loop.
826
"""
1397
827
def process_request(self, request, client_address):
1398
"""Overrides and wraps the original process_request().
1399
1400
This function creates a new pipe in self.pipe
828
"""This overrides and wraps the original process_request().
829
This function creates a new pipe in self.pipe
1401
830
"""
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
831
self.pipe = os.pipe()
832
super(ForkingMixInWithPipe,
1405
833
self).process_request(request, client_address)
1406
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
834
os.close(self.pipe[1]) # close write end
835
# Call "handle_ipc" for both data and EOF events
836
gobject.io_add_watch(self.pipe[0],
837
gobject.IO_IN | gobject.IO_HUP,
838
self.handle_ipc)
839
def handle_ipc(source, condition):
1410
840
"""Dummy function; override as necessary"""
1411
pass
1412
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
socketserver.TCPServer, object):
841
os.close(source)
842
return False
843
844
845
class IPv6_TCPServer(ForkingMixInWithPipe,
846
SocketServer.TCPServer, object):
1415
847
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1416
1417
848
Attributes:
849
settings: Server settings
850
clients: Set() of Client objects
1418
851
enabled: Boolean; whether this server is activated yet
1419
interface: None or a network interface name (string)
1420
use_ipv6: Boolean; to use IPv6 or not
1421
852
"""
1422
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1424
self.interface = interface
1425
if use_ipv6:
1426
self.address_family = socket.AF_INET6
1427
socketserver.TCPServer.__init__(self, server_address,
1428
RequestHandlerClass)
853
address_family = socket.AF_INET6
854
def __init__(self, *args, **kwargs):
855
if "settings" in kwargs:
856
self.settings = kwargs["settings"]
857
del kwargs["settings"]
858
if "clients" in kwargs:
859
self.clients = kwargs["clients"]
860
del kwargs["clients"]
861
if "use_ipv6" in kwargs:
862
if not kwargs["use_ipv6"]:
863
self.address_family = socket.AF_INET
864
del kwargs["use_ipv6"]
865
self.enabled = False
866
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1429
867
def server_bind(self):
1430
868
"""This overrides the normal server_bind() function
1431
869
to bind to an interface if one was specified, and also NOT to
1432
870
bind to an address or port if they were not specified."""
1433
if self.interface is not None:
1434
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1437
self.interface)
1438
else:
1439
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1453
else:
1454
raise
871
if self.settings["interface"]:
872
# 25 is from /usr/include/asm-i486/socket.h
873
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
874
try:
875
self.socket.setsockopt(socket.SOL_SOCKET,
876
SO_BINDTODEVICE,
877
self.settings["interface"])
878
except socket.error, error:
879
if error[0] == errno.EPERM:
880
logger.error(u"No permission to"
881
u" bind to interface %s",
882
self.settings["interface"])
883
else:
884
raise
1455
885
# Only bind(2) the socket if we really need to.
1456
886
if self.server_address[0] or self.server_address[1]:
1457
887
if not self.server_address[0]:
1458
888
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
889
any_address = "::" # in6addr_any
1460
890
else:
1461
891
any_address = socket.INADDR_ANY
1462
892
self.server_address = (any_address,
1464
894
elif not self.server_address[1]:
1465
895
self.server_address = (self.server_address[0],
1466
896
0)
1467
# if self.interface:
897
# if self.settings["interface"]:
1468
898
# self.server_address = (self.server_address[0],
1469
899
# 0, # port
1470
900
# 0, # flowinfo
1471
901
# if_nametoindex
1472
# (self.interface))
1473
return socketserver.TCPServer.server_bind(self)
1474
1475
1476
class MandosServer(IPv6_TCPServer):
1477
"""Mandos server.
1478
1479
Attributes:
1480
clients: set of Client objects
1481
gnutls_priority GnuTLS priority string
1482
use_dbus: Boolean; to emit D-Bus signals or not
1483
1484
Assumes a gobject.MainLoop event loop.
1485
"""
1486
def __init__(self, server_address, RequestHandlerClass,
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
1489
self.enabled = False
1490
self.clients = clients
1491
if self.clients is None:
1492
self.clients = set()
1493
self.use_dbus = use_dbus
1494
self.gnutls_priority = gnutls_priority
1495
IPv6_TCPServer.__init__(self, server_address,
1496
RequestHandlerClass,
1497
interface = interface,
1498
use_ipv6 = use_ipv6)
902
# (self.settings
903
# ["interface"]))
904
return super(IPv6_TCPServer, self).server_bind()
1499
905
def server_activate(self):
1500
906
if self.enabled:
1501
return socketserver.TCPServer.server_activate(self)
907
return super(IPv6_TCPServer, self).server_activate()
1502
908
def enable(self):
1503
909
self.enabled = True
1504
def add_pipe(self, parent_pipe):
1505
# Call "handle_ipc" for both data and EOF events
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
910
def handle_ipc(self, source, condition, file_objects={}):
1513
911
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
912
gobject.IO_IN: "IN", # There is data to read.
913
gobject.IO_OUT: "OUT", # Data can be written (without
914
# blocking).
915
gobject.IO_PRI: "PRI", # There is urgent data to read.
916
gobject.IO_ERR: "ERR", # Error condition.
917
gobject.IO_HUP: "HUP" # Hung up (the connection has been
918
# broken, usually for pipes and
919
# sockets).
1522
920
}
1523
921
conditions_string = ' | '.join(name
1524
922
for cond, name in
1525
923
condition_names.iteritems()
1526
924
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
925
logger.debug("Handling IPC: FD = %d, condition = %s", source,
926
conditions_string)
927
928
# Turn the pipe file descriptor into a Python file object
929
if source not in file_objects:
930
file_objects[source] = os.fdopen(source, "r", 1)
931
932
# Read a line from the file object
933
cmdline = file_objects[source].readline()
934
if not cmdline: # Empty line means end of file
935
# close the IPC pipe
936
file_objects[source].close()
937
del file_objects[source]
938
939
# Stop calling this function
1529
940
return False
1530
941
1531
# Read a request from the child
1532
request = parent_pipe.recv()
1533
command = request[0]
942
logger.debug("IPC command: %r\n" % cmdline)
1534
943
1535
if command == 'init':
1536
fpr = request[1]
1537
address = request[2]
1538
1539
for c in self.clients:
1540
if c.fingerprint == fpr:
1541
client = c
944
# Parse and act on command
945
cmd, args = cmdline.split(None, 1)
946
if cmd == "NOTFOUND":
947
if self.settings["use_dbus"]:
948
# Emit D-Bus signal
949
mandos_dbus_service.ClientNotFound(args)
950
elif cmd == "INVALID":
951
if self.settings["use_dbus"]:
952
for client in self.clients:
953
if client.name == args:
954
# Emit D-Bus signal
955
client.Rejected()
956
break
957
elif cmd == "SENDING":
958
for client in self.clients:
959
if client.name == args:
960
client.checked_ok()
961
if self.settings["use_dbus"]:
962
# Emit D-Bus signal
963
client.ReceivedSecret()
1542
964
break
1543
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
1546
if self.use_dbus:
1547
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
1549
parent_pipe.send(False)
1550
return False
1551
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1557
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
1559
return False
1560
if command == 'funcall':
1561
funcname = request[1]
1562
args = request[2]
1563
kwargs = request[3]
1564
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
1567
if command == 'getattr':
1568
attrname = request[1]
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
1571
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
965
else:
966
logger.error("Unknown IPC command: %r", cmdline)
1573
967
1574
if command == 'setattr':
1575
attrname = request[1]
1576
value = request[2]
1577
setattr(client_object, attrname, value)
1578
968
# Keep calling this function
1579
969
return True
1580
970
1581
971
1582
972
def string_to_delta(interval):
1583
973
"""Parse a string and return a datetime.timedelta
1584
974
1585
>>> string_to_delta(u'7d')
975
>>> string_to_delta('7d')
1586
976
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
977
>>> string_to_delta('60s')
1588
978
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
979
>>> string_to_delta('60m')
1590
980
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
981
>>> string_to_delta('24h')
1592
982
datetime.timedelta(1)
1593
983
>>> string_to_delta(u'1w')
1594
984
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
985
>>> string_to_delta('5m 30s')
1596
986
datetime.timedelta(0, 330)
1597
987
"""
1598
988
timevalue = datetime.timedelta(0)
1611
1001
elif suffix == u"w":
1612
1002
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
1003
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
1004
raise ValueError
1005
except (ValueError, IndexError):
1006
raise ValueError
1617
1007
timevalue += delta
1618
1008
return timevalue
1619
1009
1620
1010
1011
def server_state_changed(state):
1012
"""Derived from the Avahi example code"""
1013
if state == avahi.SERVER_COLLISION:
1014
logger.error(u"Zeroconf server name collision")
1015
service.remove()
1016
elif state == avahi.SERVER_RUNNING:
1017
service.add()
1018
1019
1020
def entry_group_state_changed(state, error):
1021
"""Derived from the Avahi example code"""
1022
logger.debug(u"Avahi state change: %i", state)
1023
1024
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1025
logger.debug(u"Zeroconf service established.")
1026
elif state == avahi.ENTRY_GROUP_COLLISION:
1027
logger.warning(u"Zeroconf service name collision.")
1028
service.rename()
1029
elif state == avahi.ENTRY_GROUP_FAILURE:
1030
logger.critical(u"Avahi: Error in group state changed %s",
1031
unicode(error))
1032
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1033
1621
1034
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1035
"""Call the C function if_nametoindex(), or equivalent"""
1625
1036
global if_nametoindex
1626
1037
try:
1627
1038
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1039
(ctypes.util.find_library("c"))
1629
1040
.if_nametoindex)
1630
1041
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1042
if "struct" not in sys.modules:
1043
import struct
1044
if "fcntl" not in sys.modules:
1045
import fcntl
1632
1046
def if_nametoindex(interface):
1633
1047
"Get an interface index the hard way, i.e. using fcntl()"
1634
1048
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1049
with closing(socket.socket()) as s:
1636
1050
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1051
struct.pack("16s16x", interface))
1052
interface_index = struct.unpack("I", ifreq[16:20])[0]
1641
1053
return interface_index
1642
1054
return if_nametoindex(interface)
1643
1055
1644
1056
1645
1057
def daemon(nochdir = False, noclose = False):
1646
1058
"""See daemon(3). Standard BSD Unix function.
1647
1648
1059
This should really exist as os.daemon, but it doesn't (yet)."""
1649
1060
if os.fork():
1650
1061
sys.exit()
1651
1062
os.setsid()
1652
1063
if not nochdir:
1653
os.chdir(u"/")
1064
os.chdir("/")
1654
1065
if os.fork():
1655
1066
sys.exit()
1656
1067
if not noclose:
1658
1069
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1659
1070
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
1071
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
1072
"/dev/null not a character device")
1663
1073
os.dup2(null, sys.stdin.fileno())
1664
1074
os.dup2(null, sys.stdout.fileno())
1665
1075
os.dup2(null, sys.stderr.fileno())
1669
1079
1670
1080
def main():
1671
1081
1672
##################################################################
1082
######################################################################
1673
1083
# Parsing of options, both command line and config file
1674
1084
1675
1085
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1086
parser.add_option("-i", "--interface", type="string",
1087
metavar="IF", help="Bind to interface IF")
1088
parser.add_option("-a", "--address", type="string",
1089
help="Address to listen for requests on")
1090
parser.add_option("-p", "--port", type="int",
1091
help="Port number to receive requests on")
1092
parser.add_option("--check", action="store_true",
1093
help="Run self-test")
1094
parser.add_option("--debug", action="store_true",
1095
help="Debug mode; run in foreground and log to"
1096
" terminal")
1097
parser.add_option("--priority", type="string", help="GnuTLS"
1098
" priority string (see GnuTLS documentation)")
1099
parser.add_option("--servicename", type="string", metavar="NAME",
1100
help="Zeroconf service name")
1101
parser.add_option("--configdir", type="string",
1102
default="/etc/mandos", metavar="DIR",
1103
help="Directory to search for configuration"
1104
" files")
1105
parser.add_option("--no-dbus", action="store_false",
1106
dest="use_dbus",
1107
help="Do not provide D-Bus system bus"
1108
" interface")
1109
parser.add_option("--no-ipv6", action="store_false",
1110
dest="use_ipv6", help="Do not use IPv6")
1702
1111
options = parser.parse_args()[0]
1703
1112
1704
1113
if options.check:
1707
1116
sys.exit()
1708
1117
1709
1118
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1119
server_defaults = { "interface": "",
1120
"address": "",
1121
"port": "",
1122
"debug": "False",
1123
"priority":
1124
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1125
"servicename": "Mandos",
1126
"use_dbus": "True",
1127
"use_ipv6": "True",
1720
1128
}
1721
1129
1722
1130
# Parse config file for server-global settings
1723
server_config = configparser.SafeConfigParser(server_defaults)
1131
server_config = ConfigParser.SafeConfigParser(server_defaults)
1724
1132
del server_defaults
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
1133
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1727
1134
# Convert the SafeConfigParser object to a dict
1728
1135
server_settings = server_config.defaults()
1729
1136
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
1732
option)
1137
server_settings["debug"] = server_config.getboolean("DEFAULT",
1138
"debug")
1139
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1140
"use_dbus")
1141
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1142
"use_ipv6")
1733
1143
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
1144
server_settings["port"] = server_config.getint("DEFAULT",
1145
"port")
1736
1146
del server_config
1737
1147
1738
1148
# Override the settings from the config file with command line
1739
1149
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
1150
for option in ("interface", "address", "port", "debug",
1151
"priority", "servicename", "configdir",
1152
"use_dbus", "use_ipv6"):
1743
1153
value = getattr(options, option)
1744
1154
if value is not None:
1745
1155
server_settings[option] = value
1746
1156
del options
1747
# Force all strings to be unicode
1748
for option in server_settings.keys():
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
1751
1157
# Now we have our good server settings in "server_settings"
1752
1158
1753
1159
##################################################################
1754
1160
1755
1161
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1162
debug = server_settings["debug"]
1163
use_dbus = server_settings["use_dbus"]
1164
use_ipv6 = server_settings["use_ipv6"]
1165
1166
if not debug:
1167
syslogger.setLevel(logging.WARNING)
1168
console.setLevel(logging.WARNING)
1169
1170
if server_settings["servicename"] != "Mandos":
1762
1171
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
1172
('Mandos (%s) [%%(process)d]:'
1173
' %%(levelname)s: %%(message)s'
1174
% server_settings["servicename"]))
1766
1175
1767
1176
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1177
client_defaults = { "timeout": "1h",
1178
"interval": "5m",
1179
"checker": "fping -q -- %%(host)s",
1180
"host": "",
1774
1181
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
1778
1182
client_config = ConfigParser.SafeConfigParser(client_defaults)
1183
client_config.read(os.path.join(server_settings["configdir"],
1184
"clients.conf"))
1185
1779
1186
global mandos_dbus_service
1780
1187
mandos_dbus_service = None
1781
1188
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
1793
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
1189
clients = Set()
1190
tcp_server = IPv6_TCPServer((server_settings["address"],
1191
server_settings["port"]),
1192
TCP_handler,
1193
settings=server_settings,
1194
clients=clients, use_ipv6=use_ipv6)
1195
pidfilename = "/var/run/mandos.pid"
1196
try:
1197
pidfile = open(pidfilename, "w")
1198
except IOError:
1199
logger.error("Could not open file %r", pidfilename)
1797
1200
1798
1201
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1202
uid = pwd.getpwnam("_mandos").pw_uid
1203
gid = pwd.getpwnam("_mandos").pw_gid
1801
1204
except KeyError:
1802
1205
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
1206
uid = pwd.getpwnam("mandos").pw_uid
1207
gid = pwd.getpwnam("mandos").pw_gid
1805
1208
except KeyError:
1806
1209
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1210
uid = pwd.getpwnam("nobody").pw_uid
1211
gid = pwd.getpwnam("nogroup").pw_gid
1809
1212
except KeyError:
1810
1213
uid = 65534
1811
1214
gid = 65534
1816
1219
if error[0] != errno.EPERM:
1817
1220
raise error
1818
1221
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1222
# Enable all possible GnuTLS debugging
1827
1223
if debug:
1828
# Enable all possible GnuTLS debugging
1829
1830
1224
# "Use a log level over 10 to enable all debugging options."
1831
1225
# - GnuTLS manual
1832
1226
gnutls.library.functions.gnutls_global_set_log_level(11)
1833
1227
1834
1228
@gnutls.library.types.gnutls_log_func
1835
1229
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1230
logger.debug("GnuTLS: %s", string[:-1])
1837
1231
1838
1232
(gnutls.library.functions
1839
1233
.gnutls_global_set_log_function(debug_gnutls))
1840
1841
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1843
os.dup2(null, sys.stdin.fileno())
1844
if null > 2:
1845
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
1234
1235
global service
1236
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1237
service = AvahiService(name = server_settings["servicename"],
1238
servicetype = "_mandos._tcp",
1239
protocol = protocol)
1240
if server_settings["interface"]:
1241
service.interface = (if_nametoindex
1242
(server_settings["interface"]))
1850
1243
1851
1244
global main_loop
1245
global bus
1246
global server
1852
1247
# From the Avahi example code
1853
1248
DBusGMainLoop(set_as_default=True )
1854
1249
main_loop = gobject.MainLoop()
1855
1250
bus = dbus.SystemBus()
1251
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1252
avahi.DBUS_PATH_SERVER),
1253
avahi.DBUS_INTERFACE_SERVER)
1856
1254
# End of Avahi example code
1857
1255
if use_dbus:
1858
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1860
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
1863
use_dbus = False
1864
server_settings[u"use_dbus"] = False
1865
tcp_server.use_dbus = False
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
1878
global multiprocessing_manager
1879
multiprocessing_manager = multiprocessing.Manager()
1256
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1880
1257
1881
1258
client_class = Client
1882
1259
if use_dbus:
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
1891
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1260
client_class = ClientDBus
1261
clients.update(Set(
1897
1262
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1263
config= dict(client_config.items(section)))
1900
1264
for section in client_config.sections()))
1901
if not tcp_server.clients:
1265
if not clients:
1902
1266
logger.warning(u"No clients defined")
1267
1268
if debug:
1269
# Redirect stdin so all checkers get /dev/null
1270
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1271
os.dup2(null, sys.stdin.fileno())
1272
if null > 2:
1273
os.close(null)
1274
else:
1275
# No console logging
1276
logger.removeHandler(console)
1277
# Close all input and output, do double fork, etc.
1278
daemon()
1279
1280
try:
1281
with closing(pidfile):
1282
pid = os.getpid()
1283
pidfile.write(str(pid) + "\n")
1284
del pidfile
1285
except IOError:
1286
logger.error(u"Could not write to file %r with PID %d",
1287
pidfilename, pid)
1288
except NameError:
1289
# "pidfile" was never created
1290
pass
1291
del pidfilename
1292
1293
def cleanup():
1294
"Cleanup function; run on exit"
1295
global group
1296
# From the Avahi example code
1297
if not group is None:
1298
group.Free()
1299
group = None
1300
# End of Avahi example code
1903
1301
1302
while clients:
1303
client = clients.pop()
1304
client.disable_hook = None
1305
client.disable()
1306
1307
atexit.register(cleanup)
1308
1904
1309
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
1916
del pidfilename
1917
1918
1310
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1920
1311
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
1312
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
1313
1924
1315
class MandosDBusService(dbus.service.Object):
1925
1316
"""A D-Bus proxy object"""
1926
1317
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1318
dbus.service.Object.__init__(self, bus, "/")
1928
1319
_interface = u"se.bsnet.fukt.Mandos"
1929
1320
1930
@dbus.service.signal(_interface, signature=u"o")
1931
def ClientAdded(self, objpath):
1932
"D-Bus signal"
1933
pass
1934
1935
@dbus.service.signal(_interface, signature=u"ss")
1936
def ClientNotFound(self, fingerprint, address):
1937
"D-Bus signal"
1938
pass
1939
1940
@dbus.service.signal(_interface, signature=u"os")
1321
@dbus.service.signal(_interface, signature="oa{sv}")
1322
def ClientAdded(self, objpath, properties):
1323
"D-Bus signal"
1324
pass
1325
1326
@dbus.service.signal(_interface, signature="s")
1327
def ClientNotFound(self, fingerprint):
1328
"D-Bus signal"
1329
pass
1330
1331
@dbus.service.signal(_interface, signature="os")
1941
1332
def ClientRemoved(self, objpath, name):
1942
1333
"D-Bus signal"
1943
1334
pass
1944
1335
1945
@dbus.service.method(_interface, out_signature=u"ao")
1336
@dbus.service.method(_interface, out_signature="ao")
1946
1337
def GetAllClients(self):
1947
1338
"D-Bus method"
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
1339
return dbus.Array(c.dbus_object_path for c in clients)
1950
1340
1951
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
1341
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1953
1342
def GetAllClientsWithProperties(self):
1954
1343
"D-Bus method"
1955
1344
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1345
((c.dbus_object_path, c.GetAllProperties())
1346
for c in clients),
1347
signature="oa{sv}")
1959
1348
1960
@dbus.service.method(_interface, in_signature=u"o")
1349
@dbus.service.method(_interface, in_signature="o")
1961
1350
def RemoveClient(self, object_path):
1962
1351
"D-Bus method"
1963
for c in tcp_server.clients:
1352
for c in clients:
1964
1353
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
1354
clients.remove(c)
1966
1355
c.remove_from_connection()
1967
1356
# Don't signal anything except ClientRemoved
1968
c.disable(quiet=True)
1357
c.disable(signal=False)
1969
1358
# Emit D-Bus signal
1970
1359
self.ClientRemoved(object_path, c.name)
1971
1360
return
1972
raise KeyError(object_path)
1361
raise KeyError
1973
1362
1974
1363
del _interface
1975
1364
1976
1365
mandos_dbus_service = MandosDBusService()
1977
1366
1978
def cleanup():
1979
"Cleanup function; run on exit"
1980
service.cleanup()
1981
1982
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
1984
if use_dbus:
1985
client.remove_from_connection()
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
1988
client.disable(quiet=True)
1989
if use_dbus:
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
1993
1994
atexit.register(cleanup)
1995
1996
for client in tcp_server.clients:
1367
for client in clients:
1997
1368
if use_dbus:
1998
1369
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1370
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1371
client.GetAllProperties())
2000
1372
client.enable()
2001
1373
2002
1374
tcp_server.enable()
2016
1388
2017
1389
try:
2018
1390
# From the Avahi example code
1391
server.connect_to_signal("StateChanged", server_state_changed)
2019
1392
try:
2020
service.activate()
1393
server_state_changed(server.GetState())
2021
1394
except dbus.exceptions.DBusException, error:
2022
1395
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
1396
sys.exit(1)
2025
1397
# End of Avahi example code
2026
1398
2033
1405
main_loop.run()
2034
1406
except AvahiError, error:
2035
1407
logger.critical(u"AvahiError: %s", error)
2036
cleanup()
2037
1408
sys.exit(1)
2038
1409
except KeyboardInterrupt:
2039
1410
if debug:
2040
1411
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2043
# Must run before the D-Bus bus name gets deregistered
2044
cleanup()
1412
logger.debug("Server received KeyboardInterrupt")
1413
logger.debug("Server exiting")
2045
1414
2046
1415
if __name__ == '__main__':
2047
1416
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0