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- Committer: Teddy Hogeborn
- Date: 2008-09-04 07:30:58 UTC
- mfrom: (24.1.87 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080904073058-h21spydersnh8jml
* README: Improved wording.
- files added:
- plugins.d/usplash
- files removed:
- .bzr-builddeb
- debian
- debian/po
- debian/source
- files renamed:
- plugins.d/mandos-client.c => plugins.d/password-request.c
- plugins.d/mandos-client.xml => plugins.d/password-request.xml
- 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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
16
15
#
17
16
# This program is free software: you can redistribute it and/or modify
18
17
# it under the terms of the GNU General Public License as published by
28
27
# along with this program. If not, see
29
28
# <http://www.gnu.org/licenses/>.
30
29
#
31
# Contact the authors at <mandos@recompile.se>.
30
# Contact the authors at <mandos@fukt.bsnet.se>.
32
31
#
33
32
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
33
from __future__ import division
36
34
37
import SocketServer as socketserver
35
import SocketServer
38
36
import socket
39
import argparse
37
import select
38
from optparse import OptionParser
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
45
44
import gnutls.library.functions
46
45
import gnutls.library.constants
47
46
import gnutls.library.types
48
import ConfigParser as configparser
47
import ConfigParser
49
48
import sys
50
49
import re
51
50
import os
52
51
import signal
52
from sets import Set
53
53
import subprocess
54
54
import atexit
55
55
import stat
56
56
import logging
57
57
import logging.handlers
58
import pwd
59
import contextlib
60
import struct
61
import fcntl
62
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
58
67
59
import dbus
68
import dbus.service
69
60
import gobject
70
61
import avahi
71
62
from dbus.mainloop.glib import DBusGMainLoop
72
63
import ctypes
73
import ctypes.util
74
import xml.dom.minidom
75
import inspect
76
77
try:
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
except AttributeError:
80
try:
81
from IN import SO_BINDTODEVICE
82
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.4.0"
87
88
#logger = logging.getLogger('mandos')
64
65
version = "1.0"
66
89
67
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
68
syslogger = logging.handlers.SysLogHandler\
69
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
70
address = "/dev/log")
71
syslogger.setFormatter(logging.Formatter\
72
('Mandos: %(levelname)s: %(message)s'))
96
73
logger.addHandler(syslogger)
97
74
98
75
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
76
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
101
77
' %(message)s'))
102
78
logger.addHandler(console)
103
79
104
80
class AvahiError(Exception):
105
def __init__(self, value, *args, **kwargs):
81
def __init__(self, value):
106
82
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
83
def __str__(self):
84
return repr(self.value)
110
85
111
86
class AvahiServiceError(AvahiError):
112
87
pass
117
92
118
93
class AvahiService(object):
119
94
"""An Avahi (Zeroconf) service.
120
121
95
Attributes:
122
96
interface: integer; avahi.IF_UNSPEC or an interface index.
123
97
Used to optionally bind to the specified interface.
131
105
max_renames: integer; maximum number of renames
132
106
rename_count: integer; counter so we only rename after collisions
133
107
a sensible number of times
134
group: D-Bus Entry Group
135
server: D-Bus Server
136
bus: dbus.SystemBus()
137
108
"""
138
109
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
110
type = None, port = None, TXT = None, domain = "",
111
host = "", max_renames = 32768):
142
112
self.interface = interface
143
113
self.name = name
144
self.type = servicetype
114
self.type = type
145
115
self.port = port
146
self.TXT = TXT if TXT is not None else []
116
if TXT is None:
117
self.TXT = []
118
else:
119
self.TXT = TXT
147
120
self.domain = domain
148
121
self.host = host
149
122
self.rename_count = 0
150
123
self.max_renames = max_renames
151
self.protocol = protocol
152
self.group = None # our entry group
153
self.server = None
154
self.bus = bus
155
self.entry_group_state_changed_match = None
156
124
def rename(self):
157
125
"""Derived from the Avahi example code"""
158
126
if self.rename_count >= self.max_renames:
159
logger.critical("No suitable Zeroconf service name found"
160
" after %i retries, exiting.",
161
self.rename_count)
127
logger.critical(u"No suitable Zeroconf service name found"
128
u" after %i retries, exiting.",
129
rename_count)
162
130
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
165
logger.info("Changing Zeroconf service name to %r ...",
166
self.name)
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
131
self.name = server.GetAlternativeServiceName(self.name)
132
logger.info(u"Changing Zeroconf service name to %r ...",
133
str(self.name))
134
syslogger.setFormatter(logging.Formatter\
135
('Mandos (%s): %%(levelname)s:'
136
' %%(message)s' % self.name))
171
137
self.remove()
172
try:
173
self.add()
174
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
138
self.add()
178
139
self.rename_count += 1
179
140
def remove(self):
180
141
"""Derived from the Avahi example code"""
181
if self.entry_group_state_changed_match is not None:
182
self.entry_group_state_changed_match.remove()
183
self.entry_group_state_changed_match = None
184
if self.group is not None:
185
self.group.Reset()
142
if group is not None:
143
group.Reset()
186
144
def add(self):
187
145
"""Derived from the Avahi example code"""
188
self.remove()
189
if self.group is None:
190
self.group = dbus.Interface(
191
self.bus.get_object(avahi.DBUS_NAME,
192
self.server.EntryGroupNew()),
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
self.entry_group_state_changed_match = (
195
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
self.name, self.type)
199
self.group.AddService(
200
self.interface,
201
self.protocol,
202
dbus.UInt32(0), # flags
203
self.name, self.type,
204
self.domain, self.host,
205
dbus.UInt16(self.port),
206
avahi.string_array_to_txt_array(self.TXT))
207
self.group.Commit()
208
def entry_group_state_changed(self, state, error):
209
"""Derived from the Avahi example code"""
210
logger.debug("Avahi entry group state change: %i", state)
211
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
logger.debug("Zeroconf service established.")
214
elif state == avahi.ENTRY_GROUP_COLLISION:
215
logger.info("Zeroconf service name collision.")
216
self.rename()
217
elif state == avahi.ENTRY_GROUP_FAILURE:
218
logger.critical("Avahi: Error in group state changed %s",
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
222
def cleanup(self):
223
"""Derived from the Avahi example code"""
224
if self.group is not None:
225
try:
226
self.group.Free()
227
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
229
pass
230
self.group = None
231
self.remove()
232
def server_state_changed(self, state, error=None):
233
"""Derived from the Avahi example code"""
234
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
242
if state in bad_states:
243
if bad_states[state] is not None:
244
if error is None:
245
logger.error(bad_states[state])
246
else:
247
logger.error(bad_states[state] + ": %r", error)
248
self.cleanup()
249
elif state == avahi.SERVER_RUNNING:
250
self.add()
251
else:
252
if error is None:
253
logger.debug("Unknown state: %r", state)
254
else:
255
logger.debug("Unknown state: %r: %r", state, error)
256
def activate(self):
257
"""Derived from the Avahi example code"""
258
if self.server is None:
259
self.server = dbus.Interface(
260
self.bus.get_object(avahi.DBUS_NAME,
261
avahi.DBUS_PATH_SERVER,
262
follow_name_owner_changes=True),
263
avahi.DBUS_INTERFACE_SERVER)
264
self.server.connect_to_signal("StateChanged",
265
self.server_state_changed)
266
self.server_state_changed(self.server.GetState())
267
268
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
146
global group
147
if group is None:
148
group = dbus.Interface\
149
(bus.get_object(avahi.DBUS_NAME,
150
server.EntryGroupNew()),
151
avahi.DBUS_INTERFACE_ENTRY_GROUP)
152
group.connect_to_signal('StateChanged',
153
entry_group_state_changed)
154
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
155
service.name, service.type)
156
group.AddService(
157
self.interface, # interface
158
avahi.PROTO_INET6, # protocol
159
dbus.UInt32(0), # flags
160
self.name, self.type,
161
self.domain, self.host,
162
dbus.UInt16(self.port),
163
avahi.string_array_to_txt_array(self.TXT))
164
group.Commit()
165
166
# From the Avahi example code:
167
group = None # our entry group
168
# End of Avahi example code
169
170
275
171
class Client(object):
276
172
"""A representation of a client host served by this server.
277
278
173
Attributes:
279
_approved: bool(); 'None' if not yet approved/disapproved
280
approval_delay: datetime.timedelta(); Time to wait for approval
281
approval_duration: datetime.timedelta(); Duration of one approval
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
286
checker_command: string; External command which is run to check
287
if client lives. %() expansions are done at
174
name: string; from the config file, used in log messages
175
fingerprint: string (40 or 32 hexadecimal digits); used to
176
uniquely identify the client
177
secret: bytestring; sent verbatim (over TLS) to client
178
host: string; available for use by the checker command
179
created: datetime.datetime(); object creation, not client host
180
last_checked_ok: datetime.datetime() or None if not yet checked OK
181
timeout: datetime.timedelta(); How long from last_checked_ok
182
until this client is invalid
183
interval: datetime.timedelta(); How often to start a new checker
184
stop_hook: If set, called by stop() as stop_hook(self)
185
checker: subprocess.Popen(); a running checker process used
186
to see if the client lives.
187
'None' if no process is running.
188
checker_initiator_tag: a gobject event source tag, or None
189
stop_initiator_tag: - '' -
190
checker_callback_tag: - '' -
191
checker_command: string; External command which is run to check if
192
client lives. %() expansions are done at
288
193
runtime with vars(self) as dict, so that for
289
194
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
291
created: datetime.datetime(); (UTC) object creation
292
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
295
enabled: bool()
296
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
298
host: string; available for use by the checker command
299
interval: datetime.timedelta(); How often to start a new checker
300
last_approval_request: datetime.datetime(); (UTC) or None
301
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
303
name: string; from the config file, used in log messages and
304
D-Bus identifiers
305
secret: bytestring; sent verbatim (over TLS) to client
306
timeout: datetime.timedelta(); How long from last_checked_ok
307
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
309
runtime_expansions: Allowed attributes for runtime expansion.
310
expires: datetime.datetime(); time (UTC) when a client will be
311
disabled, or None
195
Private attibutes:
196
_timeout: Real variable for 'timeout'
197
_interval: Real variable for 'interval'
198
_timeout_milliseconds: Used when calling gobject.timeout_add()
199
_interval_milliseconds: - '' -
312
200
"""
313
314
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
317
"last_enabled", "name", "timeout")
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
201
def _set_timeout(self, timeout):
202
"Setter function for 'timeout' attribute"
203
self._timeout = timeout
204
self._timeout_milliseconds = ((self.timeout.days
205
* 24 * 60 * 60 * 1000)
206
+ (self.timeout.seconds * 1000)
207
+ (self.timeout.microseconds
208
// 1000))
209
timeout = property(lambda self: self._timeout,
210
_set_timeout)
211
del _set_timeout
212
def _set_interval(self, interval):
213
"Setter function for 'interval' attribute"
214
self._interval = interval
215
self._interval_milliseconds = ((self.interval.days
216
* 24 * 60 * 60 * 1000)
217
+ (self.interval.seconds
218
* 1000)
219
+ (self.interval.microseconds
220
// 1000))
221
interval = property(lambda self: self._interval,
222
_set_interval)
223
del _set_interval
224
def __init__(self, name = None, stop_hook=None, config={}):
335
225
"""Note: the 'checker' key in 'config' sets the
336
226
'checker_command' attribute and *not* the 'checker'
337
227
attribute."""
338
228
self.name = name
339
if config is None:
340
config = {}
341
logger.debug("Creating client %r", self.name)
229
logger.debug(u"Creating client %r", self.name)
342
230
# Uppercase and remove spaces from fingerprint for later
343
231
# comparison purposes with return value from the fingerprint()
344
232
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
logger.debug(" Fingerprint: %s", self.fingerprint)
233
self.fingerprint = config["fingerprint"].upper()\
234
.replace(u" ", u"")
235
logger.debug(u" Fingerprint: %s", self.fingerprint)
348
236
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
237
self.secret = config["secret"].decode(u"base64")
350
238
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
239
sf = open(config["secfile"])
240
self.secret = sf.read()
241
sf.close()
355
242
else:
356
raise TypeError("No secret or secfile for client %s"
243
raise TypeError(u"No secret or secfile for client %s"
357
244
% self.name)
358
245
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
246
self.created = datetime.datetime.now()
363
247
self.last_checked_ok = None
364
248
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
249
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
250
self.stop_hook = stop_hook
369
251
self.checker = None
370
252
self.checker_initiator_tag = None
371
self.disable_initiator_tag = None
372
self.expires = None
253
self.stop_initiator_tag = None
373
254
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
375
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
389
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
394
def enable(self):
255
self.check_command = config["checker"]
256
def start(self):
395
257
"""Start this client's checker and timeout hooks"""
396
if getattr(self, "enabled", False):
397
# Already enabled
398
return
399
self.send_changedstate()
400
258
# Schedule a new checker to be started an 'interval' from now,
401
259
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
410
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
260
self.checker_initiator_tag = gobject.timeout_add\
261
(self._interval_milliseconds,
262
self.start_checker)
412
263
# Also start a new checker *right now*.
413
264
self.start_checker()
414
415
def disable(self, quiet=True):
416
"""Disable this client."""
417
if not getattr(self, "enabled", False):
265
# Schedule a stop() when 'timeout' has passed
266
self.stop_initiator_tag = gobject.timeout_add\
267
(self._timeout_milliseconds,
268
self.stop)
269
def stop(self):
270
"""Stop this client.
271
The possibility that a client might be restarted is left open,
272
but not currently used."""
273
# If this client doesn't have a secret, it is already stopped.
274
if hasattr(self, "secret") and self.secret:
275
logger.info(u"Stopping client %s", self.name)
276
self.secret = None
277
else:
418
278
return False
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
425
self.disable_initiator_tag = None
426
self.expires = None
279
if getattr(self, "stop_initiator_tag", False):
280
gobject.source_remove(self.stop_initiator_tag)
281
self.stop_initiator_tag = None
427
282
if getattr(self, "checker_initiator_tag", False):
428
283
gobject.source_remove(self.checker_initiator_tag)
429
284
self.checker_initiator_tag = None
430
285
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
self.enabled = False
286
if self.stop_hook:
287
self.stop_hook(self)
434
288
# Do not run this again if called by a gobject.timeout_add
435
289
return False
436
437
290
def __del__(self):
438
self.disable_hook = None
439
self.disable()
440
441
def checker_callback(self, pid, condition, command):
291
self.stop_hook = None
292
self.stop()
293
def checker_callback(self, pid, condition):
442
294
"""The checker has completed, so take appropriate actions."""
295
now = datetime.datetime.now()
443
296
self.checker_callback_tag = None
444
297
self.checker = None
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
448
logger.info("Checker for %(name)s succeeded",
449
vars(self))
450
self.checked_ok()
451
else:
452
logger.info("Checker for %(name)s failed",
453
vars(self))
454
else:
455
logger.warning("Checker for %(name)s crashed?",
298
if os.WIFEXITED(condition) \
299
and (os.WEXITSTATUS(condition) == 0):
300
logger.info(u"Checker for %(name)s succeeded",
301
vars(self))
302
self.last_checked_ok = now
303
gobject.source_remove(self.stop_initiator_tag)
304
self.stop_initiator_tag = gobject.timeout_add\
305
(self._timeout_milliseconds,
306
self.stop)
307
elif not os.WIFEXITED(condition):
308
logger.warning(u"Checker for %(name)s crashed?",
456
309
vars(self))
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
464
if timeout is None:
465
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
472
473
def need_approval(self):
474
self.last_approval_request = datetime.datetime.utcnow()
475
310
else:
311
logger.info(u"Checker for %(name)s failed",
312
vars(self))
476
313
def start_checker(self):
477
314
"""Start a new checker subprocess if one is not running.
478
479
315
If a checker already exists, leave it running and do
480
316
nothing."""
481
317
# The reason for not killing a running checker is that if we
484
320
# client would inevitably timeout, since no checker would get
485
321
# a chance to run to completion. If we instead leave running
486
322
# checkers alone, the checker would have to take more time
487
# than 'timeout' for the client to be disabled, which is as it
488
# should be.
489
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
503
# Start a new checker if needed
323
# than 'timeout' for the client to be declared invalid, which
324
# is as it should be.
504
325
if self.checker is None:
505
326
try:
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
327
# In case check_command has exactly one % operator
328
command = self.check_command % self.host
508
329
except TypeError:
509
330
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
331
escaped_attrs = dict((key, re.escape(str(val)))
332
for key, val in
333
vars(self).iteritems())
518
334
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
335
command = self.check_command % escaped_attrs
336
except TypeError, error:
337
logger.error(u'Could not format string "%s":'
338
u' %s', self.check_command, error)
523
339
return True # Try again later
524
self.current_checker_command = command
525
340
try:
526
logger.info("Starting checker %r for %s",
341
logger.info(u"Starting checker %r for %s",
527
342
command, self.name)
528
343
# We don't need to redirect stdout and stderr, since
529
344
# in normal mode, that is already done by daemon(),
532
347
self.checker = subprocess.Popen(command,
533
348
close_fds=True,
534
349
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
350
self.checker_callback_tag = gobject.child_watch_add\
351
(self.checker.pid,
352
self.checker_callback)
353
except OSError, error:
354
logger.error(u"Failed to start subprocess: %s",
547
355
error)
548
356
# Re-run this periodically if run by gobject.timeout_add
549
357
return True
550
551
358
def stop_checker(self):
552
359
"""Force the checker process, if any, to stop."""
553
360
if self.checker_callback_tag:
555
362
self.checker_callback_tag = None
556
363
if getattr(self, "checker", None) is None:
557
364
return
558
logger.debug("Stopping checker for %(name)s", vars(self))
365
logger.debug(u"Stopping checker for %(name)s", vars(self))
559
366
try:
560
367
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
368
#os.sleep(0.5)
562
369
#if self.checker.poll() is None:
563
370
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
371
except OSError, error:
565
372
if error.errno != errno.ESRCH: # No such process
566
373
raise
567
374
self.checker = None
568
569
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
572
"""Decorators for marking methods of a DBusObjectWithProperties to
573
become properties on the D-Bus.
574
575
The decorated method will be called with no arguments by "Get"
576
and with one argument by "Set".
577
578
The parameters, where they are supported, are the same as
579
dbus.service.method, except there is only "signature", since the
580
type from Get() and the type sent to Set() is the same.
581
"""
582
# Encoding deeply encoded byte arrays is not supported yet by the
583
# "Set" method, so we fail early here:
584
if byte_arrays and signature != "ay":
585
raise ValueError("Byte arrays not supported for non-'ay'"
586
" signature %r" % signature)
587
def decorator(func):
588
func._dbus_is_property = True
589
func._dbus_interface = dbus_interface
590
func._dbus_signature = signature
591
func._dbus_access = access
592
func._dbus_name = func.__name__
593
if func._dbus_name.endswith("_dbus_property"):
594
func._dbus_name = func._dbus_name[:-14]
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
597
return decorator
598
599
600
class DBusPropertyException(dbus.exceptions.DBusException):
601
"""A base class for D-Bus property-related exceptions
602
"""
603
def __unicode__(self):
604
return unicode(str(self))
605
606
607
class DBusPropertyAccessException(DBusPropertyException):
608
"""A property's access permissions disallows an operation.
609
"""
610
pass
611
612
613
class DBusPropertyNotFound(DBusPropertyException):
614
"""An attempt was made to access a non-existing property.
615
"""
616
pass
617
618
619
class DBusObjectWithProperties(dbus.service.Object):
620
"""A D-Bus object with properties.
621
622
Classes inheriting from this can use the dbus_service_property
623
decorator to expose methods as D-Bus properties. It exposes the
624
standard Get(), Set(), and GetAll() methods on the D-Bus.
625
"""
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
639
def _get_dbus_property(self, interface_name, property_name):
640
"""Returns a bound method if one exists which is a D-Bus
641
property with the specified name and interface.
642
"""
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
646
if (value._dbus_name == property_name
647
and value._dbus_interface == interface_name):
648
return value.__get__(self)
649
650
# No such property
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
656
out_signature="v")
657
def Get(self, interface_name, property_name):
658
"""Standard D-Bus property Get() method, see D-Bus standard.
659
"""
660
prop = self._get_dbus_property(interface_name, property_name)
661
if prop._dbus_access == "write":
662
raise DBusPropertyAccessException(property_name)
663
value = prop()
664
if not hasattr(value, "variant_level"):
665
return value
666
return type(value)(value, variant_level=value.variant_level+1)
667
668
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
669
def Set(self, interface_name, property_name, value):
670
"""Standard D-Bus property Set() method, see D-Bus standard.
671
"""
672
prop = self._get_dbus_property(interface_name, property_name)
673
if prop._dbus_access == "read":
674
raise DBusPropertyAccessException(property_name)
675
if prop._dbus_get_args_options["byte_arrays"]:
676
# The byte_arrays option is not supported yet on
677
# signatures other than "ay".
678
if prop._dbus_signature != "ay":
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
682
prop(value)
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
685
out_signature="a{sv}")
686
def GetAll(self, interface_name):
687
"""Standard D-Bus property GetAll() method, see D-Bus
688
standard.
689
690
Note: Will not include properties with access="write".
691
"""
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
694
if (interface_name
695
and interface_name != prop._dbus_interface):
696
# Interface non-empty but did not match
697
continue
698
# Ignore write-only properties
699
if prop._dbus_access == "write":
700
continue
701
value = prop()
702
if not hasattr(value, "variant_level"):
703
all[name] = value
704
continue
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
709
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
710
out_signature="s",
711
path_keyword='object_path',
712
connection_keyword='connection')
713
def Introspect(self, object_path, connection):
714
"""Standard D-Bus method, overloaded to insert property tags.
715
"""
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
718
try:
719
document = xml.dom.minidom.parseString(xmlstring)
720
def make_tag(document, name, prop):
721
e = document.createElement("property")
722
e.setAttribute("name", name)
723
e.setAttribute("type", prop._dbus_signature)
724
e.setAttribute("access", prop._dbus_access)
725
return e
726
for if_tag in document.getElementsByTagName("interface"):
727
for tag in (make_tag(document, name, prop)
728
for name, prop
729
in self._get_all_dbus_properties()
730
if prop._dbus_interface
731
== if_tag.getAttribute("name")):
732
if_tag.appendChild(tag)
733
# Add the names to the return values for the
734
# "org.freedesktop.DBus.Properties" methods
735
if (if_tag.getAttribute("name")
736
== "org.freedesktop.DBus.Properties"):
737
for cn in if_tag.getElementsByTagName("method"):
738
if cn.getAttribute("name") == "Get":
739
for arg in cn.getElementsByTagName("arg"):
740
if (arg.getAttribute("direction")
741
== "out"):
742
arg.setAttribute("name", "value")
743
elif cn.getAttribute("name") == "GetAll":
744
for arg in cn.getElementsByTagName("arg"):
745
if (arg.getAttribute("direction")
746
== "out"):
747
arg.setAttribute("name", "props")
748
xmlstring = document.toxml("utf-8")
749
document.unlink()
750
except (AttributeError, xml.dom.DOMException,
751
xml.parsers.expat.ExpatError) as error:
752
logger.error("Failed to override Introspection method",
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
if dt is None:
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
768
"""
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
776
# Ignore non-D-Bus attributes, and D-Bus attributes
777
# with the wrong interface name
778
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
781
continue
782
# Create an alternate D-Bus interface name based on
783
# the current name
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
787
# Is this a D-Bus signal?
788
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
792
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
794
.cell_contents)
795
# Create a new, but exactly alike, function
796
# object, and decorate it to be a new D-Bus signal
797
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
807
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
810
def fixscope(func1, func2):
811
"""This function is a scope container to pass
812
func1 and func2 to the "call_both" function
813
outside of its arguments"""
814
def call_both(*args, **kwargs):
815
"""This function will emit two D-Bus
816
signals by calling func1 and func2"""
817
func1(*args, **kwargs)
818
func2(*args, **kwargs)
819
return call_both
820
# Create the "call_both" function and add it to
821
# the class
822
attr[attrname] = fixscope(attribute,
823
new_function)
824
# Is this a D-Bus method?
825
elif getattr(attribute, "_dbus_is_method", False):
826
# Create a new, but exactly alike, function
827
# object. Decorate it to be a new D-Bus method
828
# with the alternate D-Bus interface name. Add it
829
# to the class.
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
840
# Is this a D-Bus property?
841
elif getattr(attribute, "_dbus_is_property", False):
842
# Create a new, but exactly alike, function
843
# object, and decorate it to be a new D-Bus
844
# property with the alternate D-Bus interface
845
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
861
class ClientDBus(Client, DBusObjectWithProperties):
862
"""A Client class using D-Bus
863
864
Attributes:
865
dbus_object_path: dbus.ObjectPath
866
bus: dbus.SystemBus()
867
"""
868
869
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
871
872
# dbus.service.Object doesn't use super(), so we can't either.
873
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
876
self.bus = bus
877
Client.__init__(self, *args, **kwargs)
878
# Only now, when this client is initialized, can it show up on
879
# the D-Bus
880
client_object_name = unicode(self.name).translate(
881
{ord("."): ord("_"),
882
ord("-"): ord("_")})
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
885
DBusObjectWithProperties.__init__(self, self.bus,
886
self.dbus_object_path)
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
891
""" Modify a variable so that it's a property which announces
892
its changes to DBus.
893
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
896
dbus_name: D-Bus name of the variable
897
type_func: Function that transform the value before sending it
898
to the D-Bus. Default: no transform
899
variant_level: D-Bus variant level. Default: 1
900
"""
901
attrname = "_{0}".format(dbus_name)
902
def setter(self, value):
903
if hasattr(self, "dbus_object_path"):
904
if (not hasattr(self, attrname) or
905
type_func(getattr(self, attrname, None))
906
!= type_func(value)):
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_value)
911
setattr(self, attrname, value)
912
913
return property(lambda self: getattr(self, attrname), setter)
914
915
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
917
approvals_pending = notifychangeproperty(dbus.Boolean,
918
"ApprovalPending",
919
type_func = bool)
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
921
last_enabled = notifychangeproperty(datetime_to_dbus,
922
"LastEnabled")
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
927
"LastCheckedOK")
928
last_approval_request = notifychangeproperty(
929
datetime_to_dbus, "LastApprovalRequest")
930
approved_by_default = notifychangeproperty(dbus.Boolean,
931
"ApprovedByDefault")
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
936
approval_duration = notifychangeproperty(
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
939
host = notifychangeproperty(dbus.String, "Host")
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
943
extended_timeout = notifychangeproperty(
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
950
checker_command = notifychangeproperty(dbus.String, "Checker")
951
952
del notifychangeproperty
953
954
def __del__(self, *args, **kwargs):
955
try:
956
self.remove_from_connection()
957
except LookupError:
958
pass
959
if hasattr(DBusObjectWithProperties, "__del__"):
960
DBusObjectWithProperties.__del__(self, *args, **kwargs)
961
Client.__del__(self, *args, **kwargs)
962
963
def checker_callback(self, pid, condition, command,
964
*args, **kwargs):
965
self.checker_callback_tag = None
966
self.checker = None
967
if os.WIFEXITED(condition):
968
exitstatus = os.WEXITSTATUS(condition)
969
# Emit D-Bus signal
970
self.CheckerCompleted(dbus.Int16(exitstatus),
971
dbus.Int64(condition),
972
dbus.String(command))
973
else:
974
# Emit D-Bus signal
975
self.CheckerCompleted(dbus.Int16(-1),
976
dbus.Int64(condition),
977
dbus.String(command))
978
979
return Client.checker_callback(self, pid, condition, command,
980
*args, **kwargs)
981
982
def start_checker(self, *args, **kwargs):
983
old_checker = self.checker
984
if self.checker is not None:
985
old_checker_pid = self.checker.pid
986
else:
987
old_checker_pid = None
988
r = Client.start_checker(self, *args, **kwargs)
989
# Only if new checker process was started
990
if (self.checker is not None
991
and old_checker_pid != self.checker.pid):
992
# Emit D-Bus signal
993
self.CheckerStarted(self.current_checker_command)
994
return r
995
996
def _reset_approved(self):
997
self._approved = None
998
return False
999
1000
def approve(self, value=True):
1001
self.send_changedstate()
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1010
1011
## Signals
1012
1013
# CheckerCompleted - signal
1014
@dbus.service.signal(_interface, signature="nxs")
1015
def CheckerCompleted(self, exitcode, waitstatus, command):
1016
"D-Bus signal"
1017
pass
1018
1019
# CheckerStarted - signal
1020
@dbus.service.signal(_interface, signature="s")
1021
def CheckerStarted(self, command):
1022
"D-Bus signal"
1023
pass
1024
1025
# PropertyChanged - signal
1026
@dbus.service.signal(_interface, signature="sv")
1027
def PropertyChanged(self, property, value):
1028
"D-Bus signal"
1029
pass
1030
1031
# GotSecret - signal
1032
@dbus.service.signal(_interface)
1033
def GotSecret(self):
1034
"""D-Bus signal
1035
Is sent after a successful transfer of secret from the Mandos
1036
server to mandos-client
1037
"""
1038
pass
1039
1040
# Rejected - signal
1041
@dbus.service.signal(_interface, signature="s")
1042
def Rejected(self, reason):
1043
"D-Bus signal"
1044
pass
1045
1046
# NeedApproval - signal
1047
@dbus.service.signal(_interface, signature="tb")
1048
def NeedApproval(self, timeout, default):
1049
"D-Bus signal"
1050
return self.need_approval()
1051
1052
## Methods
1053
1054
# Approve - method
1055
@dbus.service.method(_interface, in_signature="b")
1056
def Approve(self, value):
1057
self.approve(value)
1058
1059
# CheckedOK - method
1060
@dbus.service.method(_interface)
1061
def CheckedOK(self):
1062
self.checked_ok()
1063
1064
# Enable - method
1065
@dbus.service.method(_interface)
1066
def Enable(self):
1067
"D-Bus method"
1068
self.enable()
1069
1070
# StartChecker - method
1071
@dbus.service.method(_interface)
1072
def StartChecker(self):
1073
"D-Bus method"
1074
self.start_checker()
1075
1076
# Disable - method
1077
@dbus.service.method(_interface)
1078
def Disable(self):
1079
"D-Bus method"
1080
self.disable()
1081
1082
# StopChecker - method
1083
@dbus.service.method(_interface)
1084
def StopChecker(self):
1085
self.stop_checker()
1086
1087
## Properties
1088
1089
# ApprovalPending - property
1090
@dbus_service_property(_interface, signature="b", access="read")
1091
def ApprovalPending_dbus_property(self):
1092
return dbus.Boolean(bool(self.approvals_pending))
1093
1094
# ApprovedByDefault - property
1095
@dbus_service_property(_interface, signature="b",
1096
access="readwrite")
1097
def ApprovedByDefault_dbus_property(self, value=None):
1098
if value is None: # get
1099
return dbus.Boolean(self.approved_by_default)
1100
self.approved_by_default = bool(value)
1101
1102
# ApprovalDelay - property
1103
@dbus_service_property(_interface, signature="t",
1104
access="readwrite")
1105
def ApprovalDelay_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.UInt64(self.approval_delay_milliseconds())
1108
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1109
1110
# ApprovalDuration - property
1111
@dbus_service_property(_interface, signature="t",
1112
access="readwrite")
1113
def ApprovalDuration_dbus_property(self, value=None):
1114
if value is None: # get
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
1117
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1118
1119
# Name - property
1120
@dbus_service_property(_interface, signature="s", access="read")
1121
def Name_dbus_property(self):
1122
return dbus.String(self.name)
1123
1124
# Fingerprint - property
1125
@dbus_service_property(_interface, signature="s", access="read")
1126
def Fingerprint_dbus_property(self):
1127
return dbus.String(self.fingerprint)
1128
1129
# Host - property
1130
@dbus_service_property(_interface, signature="s",
1131
access="readwrite")
1132
def Host_dbus_property(self, value=None):
1133
if value is None: # get
1134
return dbus.String(self.host)
1135
self.host = value
1136
1137
# Created - property
1138
@dbus_service_property(_interface, signature="s", access="read")
1139
def Created_dbus_property(self):
1140
return dbus.String(datetime_to_dbus(self.created))
1141
1142
# LastEnabled - property
1143
@dbus_service_property(_interface, signature="s", access="read")
1144
def LastEnabled_dbus_property(self):
1145
return datetime_to_dbus(self.last_enabled)
1146
1147
# Enabled - property
1148
@dbus_service_property(_interface, signature="b",
1149
access="readwrite")
1150
def Enabled_dbus_property(self, value=None):
1151
if value is None: # get
1152
return dbus.Boolean(self.enabled)
1153
if value:
1154
self.enable()
1155
else:
1156
self.disable()
1157
1158
# LastCheckedOK - property
1159
@dbus_service_property(_interface, signature="s",
1160
access="readwrite")
1161
def LastCheckedOK_dbus_property(self, value=None):
1162
if value is not None:
1163
self.checked_ok()
1164
return
1165
return datetime_to_dbus(self.last_checked_ok)
1166
1167
# Expires - property
1168
@dbus_service_property(_interface, signature="s", access="read")
1169
def Expires_dbus_property(self):
1170
return datetime_to_dbus(self.expires)
1171
1172
# LastApprovalRequest - property
1173
@dbus_service_property(_interface, signature="s", access="read")
1174
def LastApprovalRequest_dbus_property(self):
1175
return datetime_to_dbus(self.last_approval_request)
1176
1177
# Timeout - property
1178
@dbus_service_property(_interface, signature="t",
1179
access="readwrite")
1180
def Timeout_dbus_property(self, value=None):
1181
if value is None: # get
1182
return dbus.UInt64(self.timeout_milliseconds())
1183
self.timeout = datetime.timedelta(0, 0, 0, value)
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
1206
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
1208
access="readwrite")
1209
def ExtendedTimeout_dbus_property(self, value=None):
1210
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1213
1214
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
1216
access="readwrite")
1217
def Interval_dbus_property(self, value=None):
1218
if value is None: # get
1219
return dbus.UInt64(self.interval_milliseconds())
1220
self.interval = datetime.timedelta(0, 0, 0, value)
1221
if getattr(self, "checker_initiator_tag", None) is None:
1222
return
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
1229
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
1231
access="readwrite")
1232
def Checker_dbus_property(self, value=None):
1233
if value is None: # get
1234
return dbus.String(self.checker_command)
1235
self.checker_command = value
1236
1237
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
1239
access="readwrite")
1240
def CheckerRunning_dbus_property(self, value=None):
1241
if value is None: # get
1242
return dbus.Boolean(self.checker is not None)
1243
if value:
1244
self.start_checker()
1245
else:
1246
self.stop_checker()
1247
1248
# ObjectPath - property
1249
@dbus_service_property(_interface, signature="o", access="read")
1250
def ObjectPath_dbus_property(self):
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
1253
# Secret = property
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
1256
def Secret_dbus_property(self, value):
1257
self.secret = str(value)
1258
1259
del _interface
1260
1261
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
1264
self._pipe = child_pipe
1265
self._pipe.send(('init', fpr, address))
1266
if not self._pipe.recv():
1267
raise KeyError()
1268
1269
def __getattribute__(self, name):
1270
if(name == '_pipe'):
1271
return super(ProxyClient, self).__getattribute__(name)
1272
self._pipe.send(('getattr', name))
1273
data = self._pipe.recv()
1274
if data[0] == 'data':
1275
return data[1]
1276
if data[0] == 'function':
1277
def func(*args, **kwargs):
1278
self._pipe.send(('funcall', name, args, kwargs))
1279
return self._pipe.recv()[1]
1280
return func
1281
1282
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
1284
return super(ProxyClient, self).__setattr__(name, value)
1285
self._pipe.send(('setattr', name, value))
1286
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
1289
1290
class ClientHandler(socketserver.BaseRequestHandler, object):
1291
"""A class to handle client connections.
1292
1293
Instantiated once for each connection to handle it.
375
def still_valid(self):
376
"""Has the timeout not yet passed for this client?"""
377
now = datetime.datetime.now()
378
if self.last_checked_ok is None:
379
return now < (self.created + self.timeout)
380
else:
381
return now < (self.last_checked_ok + self.timeout)
382
383
384
def peer_certificate(session):
385
"Return the peer's OpenPGP certificate as a bytestring"
386
# If not an OpenPGP certificate...
387
if gnutls.library.functions.gnutls_certificate_type_get\
388
(session._c_object) \
389
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
390
# ...do the normal thing
391
return session.peer_certificate
392
list_size = ctypes.c_uint()
393
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
394
(session._c_object, ctypes.byref(list_size))
395
if list_size.value == 0:
396
return None
397
cert = cert_list[0]
398
return ctypes.string_at(cert.data, cert.size)
399
400
401
def fingerprint(openpgp):
402
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
403
# New GnuTLS "datum" with the OpenPGP public key
404
datum = gnutls.library.types.gnutls_datum_t\
405
(ctypes.cast(ctypes.c_char_p(openpgp),
406
ctypes.POINTER(ctypes.c_ubyte)),
407
ctypes.c_uint(len(openpgp)))
408
# New empty GnuTLS certificate
409
crt = gnutls.library.types.gnutls_openpgp_crt_t()
410
gnutls.library.functions.gnutls_openpgp_crt_init\
411
(ctypes.byref(crt))
412
# Import the OpenPGP public key into the certificate
413
gnutls.library.functions.gnutls_openpgp_crt_import\
414
(crt, ctypes.byref(datum),
415
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
416
# Verify the self signature in the key
417
crtverify = ctypes.c_uint();
418
gnutls.library.functions.gnutls_openpgp_crt_verify_self\
419
(crt, 0, ctypes.byref(crtverify))
420
if crtverify.value != 0:
421
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
422
raise gnutls.errors.CertificateSecurityError("Verify failed")
423
# New buffer for the fingerprint
424
buffer = ctypes.create_string_buffer(20)
425
buffer_length = ctypes.c_size_t()
426
# Get the fingerprint from the certificate into the buffer
427
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
428
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
429
# Deinit the certificate
430
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
431
# Convert the buffer to a Python bytestring
432
fpr = ctypes.string_at(buffer, buffer_length.value)
433
# Convert the bytestring to hexadecimal notation
434
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
435
return hex_fpr
436
437
438
class tcp_handler(SocketServer.BaseRequestHandler, object):
439
"""A TCP request handler class.
440
Instantiated by IPv6_TCPServer for each request to handle it.
1294
441
Note: This will run in its own forked process."""
1295
442
1296
443
def handle(self):
1297
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
1300
logger.debug("Pipe FD: %d",
1301
self.server.child_pipe.fileno())
1302
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1312
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
1317
# Use a fallback default, since this MUST be set.
1318
priority = self.server.gnutls_priority
1319
if priority is None:
1320
priority = "NORMAL"
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
1324
1325
# Start communication using the Mandos protocol
1326
# Get protocol number
1327
line = self.request.makefile().readline()
1328
logger.debug("Protocol version: %r", line)
1329
try:
1330
if int(line.strip().split()[0]) > 1:
1331
raise RuntimeError
1332
except (ValueError, IndexError, RuntimeError) as error:
1333
logger.error("Unknown protocol version: %s", error)
1334
return
1335
1336
# Start GnuTLS connection
1337
try:
1338
session.handshake()
1339
except gnutls.errors.GNUTLSError as error:
1340
logger.warning("Handshake failed: %s", error)
1341
# Do not run session.bye() here: the session is not
1342
# established. Just abandon the request.
1343
return
1344
logger.debug("Handshake succeeded")
1345
1346
approval_required = False
1347
try:
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
1359
self.client_address)
1360
except KeyError:
1361
return
1362
1363
if client.approval_delay:
1364
delay = client.approval_delay
1365
client.approvals_pending += 1
1366
approval_required = True
1367
1368
while True:
1369
if not client.enabled:
1370
logger.info("Client %s is disabled",
1371
client.name)
1372
if self.server.use_dbus:
1373
# Emit D-Bus signal
1374
client.Rejected("Disabled")
1375
return
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
1379
break
1380
elif client._approved is None:
1381
logger.info("Client %s needs approval",
1382
client.name)
1383
if self.server.use_dbus:
1384
# Emit D-Bus signal
1385
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
1388
else:
1389
logger.warning("Client %s was not approved",
1390
client.name)
1391
if self.server.use_dbus:
1392
# Emit D-Bus signal
1393
client.Rejected("Denied")
1394
return
1395
1396
#wait until timeout or approved
1397
time = datetime.datetime.now()
1398
client.changedstate.acquire()
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
1402
client.changedstate.release()
1403
time2 = datetime.datetime.now()
1404
if (time2 - time) >= delay:
1405
if not client.approved_by_default:
1406
logger.warning("Client %s timed out while"
1407
" waiting for approval",
1408
client.name)
1409
if self.server.use_dbus:
1410
# Emit D-Bus signal
1411
client.Rejected("Approval timed out")
1412
return
1413
else:
1414
break
1415
else:
1416
delay -= time2 - time
1417
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
1429
1430
logger.info("Sending secret to %s", client.name)
1431
# bump the timeout using extended_timeout
1432
client.checked_ok(client.extended_timeout)
1433
if self.server.use_dbus:
1434
# Emit D-Bus signal
1435
client.GotSecret()
1436
1437
finally:
1438
if approval_required:
1439
client.approvals_pending -= 1
1440
try:
1441
session.bye()
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
1444
1445
@staticmethod
1446
def peer_certificate(session):
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
1454
list_size = ctypes.c_uint(1)
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
1457
(session._c_object, ctypes.byref(list_size)))
1458
if not bool(cert_list) and list_size.value != 0:
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
1461
if list_size.value == 0:
1462
return None
1463
cert = cert_list[0]
1464
return ctypes.string_at(cert.data, cert.size)
1465
1466
@staticmethod
1467
def fingerprint(openpgp):
1468
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1469
# New GnuTLS "datum" with the OpenPGP public key
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
1475
# New empty GnuTLS certificate
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1479
# Import the OpenPGP public key into the certificate
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
1484
# Verify the self signature in the key
1485
crtverify = ctypes.c_uint()
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
1489
if crtverify.value != 0:
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
1493
# New buffer for the fingerprint
1494
buf = ctypes.create_string_buffer(20)
1495
buf_len = ctypes.c_size_t()
1496
# Get the fingerprint from the certificate into the buffer
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
1500
# Deinit the certificate
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1502
# Convert the buffer to a Python bytestring
1503
fpr = ctypes.string_at(buf, buf_len.value)
1504
# Convert the bytestring to hexadecimal notation
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1506
return hex_fpr
1507
1508
1509
class MultiprocessingMixIn(object):
1510
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1511
def sub_process_main(self, request, address):
1512
try:
1513
self.finish_request(request, address)
1514
except:
1515
self.handle_error(request, address)
1516
self.close_request(request)
1517
1518
def process_request(self, request, address):
1519
"""Start a new process to process the request."""
1520
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
1523
proc.start()
1524
return proc
1525
1526
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1528
""" adds a pipe to the MixIn """
1529
def process_request(self, request, client_address):
1530
"""Overrides and wraps the original process_request().
1531
1532
This function creates a new pipe in self.pipe
1533
"""
1534
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1535
1536
proc = MultiprocessingMixIn.process_request(self, request,
1537
client_address)
1538
self.child_pipe.close()
1539
self.add_pipe(parent_pipe, proc)
1540
1541
def add_pipe(self, parent_pipe, proc):
1542
"""Dummy function; override as necessary"""
1543
raise NotImplementedError
1544
1545
1546
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1547
socketserver.TCPServer, object):
1548
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1549
444
logger.info(u"TCP connection from: %s",
445
unicode(self.client_address))
446
session = gnutls.connection.ClientSession\
447
(self.request, gnutls.connection.X509Credentials())
448
449
line = self.request.makefile().readline()
450
logger.debug(u"Protocol version: %r", line)
451
try:
452
if int(line.strip().split()[0]) > 1:
453
raise RuntimeError
454
except (ValueError, IndexError, RuntimeError), error:
455
logger.error(u"Unknown protocol version: %s", error)
456
return
457
458
# Note: gnutls.connection.X509Credentials is really a generic
459
# GnuTLS certificate credentials object so long as no X.509
460
# keys are added to it. Therefore, we can use it here despite
461
# using OpenPGP certificates.
462
463
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
464
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
465
# "+DHE-DSS"))
466
priority = "NORMAL" # Fallback default, since this
467
# MUST be set.
468
if self.server.settings["priority"]:
469
priority = self.server.settings["priority"]
470
gnutls.library.functions.gnutls_priority_set_direct\
471
(session._c_object, priority, None);
472
473
try:
474
session.handshake()
475
except gnutls.errors.GNUTLSError, error:
476
logger.warning(u"Handshake failed: %s", error)
477
# Do not run session.bye() here: the session is not
478
# established. Just abandon the request.
479
return
480
try:
481
fpr = fingerprint(peer_certificate(session))
482
except (TypeError, gnutls.errors.GNUTLSError), error:
483
logger.warning(u"Bad certificate: %s", error)
484
session.bye()
485
return
486
logger.debug(u"Fingerprint: %s", fpr)
487
client = None
488
for c in self.server.clients:
489
if c.fingerprint == fpr:
490
client = c
491
break
492
if not client:
493
logger.warning(u"Client not found for fingerprint: %s",
494
fpr)
495
session.bye()
496
return
497
# Have to check if client.still_valid(), since it is possible
498
# that the client timed out while establishing the GnuTLS
499
# session.
500
if not client.still_valid():
501
logger.warning(u"Client %(name)s is invalid",
502
vars(client))
503
session.bye()
504
return
505
sent_size = 0
506
while sent_size < len(client.secret):
507
sent = session.send(client.secret[sent_size:])
508
logger.debug(u"Sent: %d, remaining: %d",
509
sent, len(client.secret)
510
- (sent_size + sent))
511
sent_size += sent
512
session.bye()
513
514
515
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
516
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1550
517
Attributes:
1551
enabled: Boolean; whether this server is activated yet
1552
interface: None or a network interface name (string)
1553
use_ipv6: Boolean; to use IPv6 or not
518
settings: Server settings
519
clients: Set() of Client objects
1554
520
"""
1555
def __init__(self, server_address, RequestHandlerClass,
1556
interface=None, use_ipv6=True):
1557
self.interface = interface
1558
if use_ipv6:
1559
self.address_family = socket.AF_INET6
1560
socketserver.TCPServer.__init__(self, server_address,
1561
RequestHandlerClass)
521
address_family = socket.AF_INET6
522
def __init__(self, *args, **kwargs):
523
if "settings" in kwargs:
524
self.settings = kwargs["settings"]
525
del kwargs["settings"]
526
if "clients" in kwargs:
527
self.clients = kwargs["clients"]
528
del kwargs["clients"]
529
return super(type(self), self).__init__(*args, **kwargs)
1562
530
def server_bind(self):
1563
531
"""This overrides the normal server_bind() function
1564
532
to bind to an interface if one was specified, and also NOT to
1565
533
bind to an address or port if they were not specified."""
1566
if self.interface is not None:
1567
if SO_BINDTODEVICE is None:
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1570
self.interface)
1571
else:
1572
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
1585
self.interface)
1586
else:
1587
raise
534
if self.settings["interface"]:
535
# 25 is from /usr/include/asm-i486/socket.h
536
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
537
try:
538
self.socket.setsockopt(socket.SOL_SOCKET,
539
SO_BINDTODEVICE,
540
self.settings["interface"])
541
except socket.error, error:
542
if error[0] == errno.EPERM:
543
logger.error(u"No permission to"
544
u" bind to interface %s",
545
self.settings["interface"])
546
else:
547
raise error
1588
548
# Only bind(2) the socket if we really need to.
1589
549
if self.server_address[0] or self.server_address[1]:
1590
550
if not self.server_address[0]:
1591
if self.address_family == socket.AF_INET6:
1592
any_address = "::" # in6addr_any
1593
else:
1594
any_address = socket.INADDR_ANY
1595
self.server_address = (any_address,
551
in6addr_any = "::"
552
self.server_address = (in6addr_any,
1596
553
self.server_address[1])
1597
554
elif not self.server_address[1]:
1598
555
self.server_address = (self.server_address[0],
1599
556
0)
1600
# if self.interface:
557
# if self.settings["interface"]:
1601
558
# self.server_address = (self.server_address[0],
1602
559
# 0, # port
1603
560
# 0, # flowinfo
1604
561
# if_nametoindex
1605
# (self.interface))
1606
return socketserver.TCPServer.server_bind(self)
1607
1608
1609
class MandosServer(IPv6_TCPServer):
1610
"""Mandos server.
1611
1612
Attributes:
1613
clients: set of Client objects
1614
gnutls_priority GnuTLS priority string
1615
use_dbus: Boolean; to emit D-Bus signals or not
1616
1617
Assumes a gobject.MainLoop event loop.
1618
"""
1619
def __init__(self, server_address, RequestHandlerClass,
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
1622
self.enabled = False
1623
self.clients = clients
1624
if self.clients is None:
1625
self.clients = set()
1626
self.use_dbus = use_dbus
1627
self.gnutls_priority = gnutls_priority
1628
IPv6_TCPServer.__init__(self, server_address,
1629
RequestHandlerClass,
1630
interface = interface,
1631
use_ipv6 = use_ipv6)
1632
def server_activate(self):
1633
if self.enabled:
1634
return socketserver.TCPServer.server_activate(self)
1635
1636
def enable(self):
1637
self.enabled = True
1638
1639
def add_pipe(self, parent_pipe, proc):
1640
# Call "handle_ipc" for both data and EOF events
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
1647
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
1664
# error, or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1666
# Wait for other process to exit
1667
proc.join()
1668
return False
1669
1670
# Read a request from the child
1671
request = parent_pipe.recv()
1672
command = request[0]
1673
1674
if command == 'init':
1675
fpr = request[1]
1676
address = request[2]
1677
1678
for c in self.clients:
1679
if c.fingerprint == fpr:
1680
client = c
1681
break
1682
else:
1683
logger.info("Client not found for fingerprint: %s, ad"
1684
"dress: %s", fpr, address)
1685
if self.use_dbus:
1686
# Emit D-Bus signal
1687
mandos_dbus_service.ClientNotFound(fpr,
1688
address[0])
1689
parent_pipe.send(False)
1690
return False
1691
1692
gobject.io_add_watch(parent_pipe.fileno(),
1693
gobject.IO_IN | gobject.IO_HUP,
1694
functools.partial(self.handle_ipc,
1695
parent_pipe =
1696
parent_pipe,
1697
proc = proc,
1698
client_object =
1699
client))
1700
parent_pipe.send(True)
1701
# remove the old hook in favor of the new above hook on
1702
# same fileno
1703
return False
1704
if command == 'funcall':
1705
funcname = request[1]
1706
args = request[2]
1707
kwargs = request[3]
1708
1709
parent_pipe.send(('data', getattr(client_object,
1710
funcname)(*args,
1711
**kwargs)))
1712
1713
if command == 'getattr':
1714
attrname = request[1]
1715
if callable(client_object.__getattribute__(attrname)):
1716
parent_pipe.send(('function',))
1717
else:
1718
parent_pipe.send(('data', client_object
1719
.__getattribute__(attrname)))
1720
1721
if command == 'setattr':
1722
attrname = request[1]
1723
value = request[2]
1724
setattr(client_object, attrname, value)
1725
1726
return True
562
# (self.settings
563
# ["interface"]))
564
return super(type(self), self).server_bind()
1727
565
1728
566
1729
567
def string_to_delta(interval):
1730
568
"""Parse a string and return a datetime.timedelta
1731
569
1732
570
>>> string_to_delta('7d')
1733
571
datetime.timedelta(7)
1734
572
>>> string_to_delta('60s')
1737
575
datetime.timedelta(0, 3600)
1738
576
>>> string_to_delta('24h')
1739
577
datetime.timedelta(1)
1740
>>> string_to_delta('1w')
578
>>> string_to_delta(u'1w')
1741
579
datetime.timedelta(7)
1742
580
>>> string_to_delta('5m 30s')
1743
581
datetime.timedelta(0, 330)
1745
583
timevalue = datetime.timedelta(0)
1746
584
for s in interval.split():
1747
585
try:
1748
suffix = unicode(s[-1])
1749
value = int(s[:-1])
1750
if suffix == "d":
586
suffix=unicode(s[-1])
587
value=int(s[:-1])
588
if suffix == u"d":
1751
589
delta = datetime.timedelta(value)
1752
elif suffix == "s":
590
elif suffix == u"s":
1753
591
delta = datetime.timedelta(0, value)
1754
elif suffix == "m":
592
elif suffix == u"m":
1755
593
delta = datetime.timedelta(0, 0, 0, 0, value)
1756
elif suffix == "h":
594
elif suffix == u"h":
1757
595
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1758
elif suffix == "w":
596
elif suffix == u"w":
1759
597
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1760
598
else:
1761
raise ValueError("Unknown suffix %r" % suffix)
1762
except (ValueError, IndexError) as e:
1763
raise ValueError(*(e.args))
599
raise ValueError
600
except (ValueError, IndexError):
601
raise ValueError
1764
602
timevalue += delta
1765
603
return timevalue
1766
604
1767
605
606
def server_state_changed(state):
607
"""Derived from the Avahi example code"""
608
if state == avahi.SERVER_COLLISION:
609
logger.error(u"Zeroconf server name collision")
610
service.remove()
611
elif state == avahi.SERVER_RUNNING:
612
service.add()
613
614
615
def entry_group_state_changed(state, error):
616
"""Derived from the Avahi example code"""
617
logger.debug(u"Avahi state change: %i", state)
618
619
if state == avahi.ENTRY_GROUP_ESTABLISHED:
620
logger.debug(u"Zeroconf service established.")
621
elif state == avahi.ENTRY_GROUP_COLLISION:
622
logger.warning(u"Zeroconf service name collision.")
623
service.rename()
624
elif state == avahi.ENTRY_GROUP_FAILURE:
625
logger.critical(u"Avahi: Error in group state changed %s",
626
unicode(error))
627
raise AvahiGroupError("State changed: %s", str(error))
628
1768
629
def if_nametoindex(interface):
1769
"""Call the C function if_nametoindex(), or equivalent
1770
1771
Note: This function cannot accept a unicode string."""
630
"""Call the C function if_nametoindex(), or equivalent"""
1772
631
global if_nametoindex
1773
632
try:
1774
if_nametoindex = (ctypes.cdll.LoadLibrary
1775
(ctypes.util.find_library("c"))
1776
.if_nametoindex)
633
if "ctypes.util" not in sys.modules:
634
import ctypes.util
635
if_nametoindex = ctypes.cdll.LoadLibrary\
636
(ctypes.util.find_library("c")).if_nametoindex
1777
637
except (OSError, AttributeError):
1778
logger.warning("Doing if_nametoindex the hard way")
638
if "struct" not in sys.modules:
639
import struct
640
if "fcntl" not in sys.modules:
641
import fcntl
1779
642
def if_nametoindex(interface):
1780
643
"Get an interface index the hard way, i.e. using fcntl()"
1781
644
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1782
with contextlib.closing(socket.socket()) as s:
1783
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1784
struct.pack(str("16s16x"),
1785
interface))
1786
interface_index = struct.unpack(str("I"),
1787
ifreq[16:20])[0]
645
s = socket.socket()
646
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
647
struct.pack("16s16x", interface))
648
s.close()
649
interface_index = struct.unpack("I", ifreq[16:20])[0]
1788
650
return interface_index
1789
651
return if_nametoindex(interface)
1790
652
1791
653
1792
654
def daemon(nochdir = False, noclose = False):
1793
655
"""See daemon(3). Standard BSD Unix function.
1794
1795
656
This should really exist as os.daemon, but it doesn't (yet)."""
1796
657
if os.fork():
1797
658
sys.exit()
1805
666
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1806
667
if not stat.S_ISCHR(os.fstat(null).st_mode):
1807
668
raise OSError(errno.ENODEV,
1808
"%s not a character device"
1809
% os.path.devnull)
669
"/dev/null not a character device")
1810
670
os.dup2(null, sys.stdin.fileno())
1811
671
os.dup2(null, sys.stdout.fileno())
1812
672
os.dup2(null, sys.stderr.fileno())
1815
675
1816
676
1817
677
def main():
1818
1819
##################################################################
1820
# Parsing of options, both command line and config file
1821
1822
parser = argparse.ArgumentParser()
1823
parser.add_argument("-v", "--version", action="version",
1824
version = "%%(prog)s %s" % version,
1825
help="show version number and exit")
1826
parser.add_argument("-i", "--interface", metavar="IF",
1827
help="Bind to interface IF")
1828
parser.add_argument("-a", "--address",
1829
help="Address to listen for requests on")
1830
parser.add_argument("-p", "--port", type=int,
1831
help="Port number to receive requests on")
1832
parser.add_argument("--check", action="store_true",
1833
help="Run self-test")
1834
parser.add_argument("--debug", action="store_true",
1835
help="Debug mode; run in foreground and log"
1836
" to terminal")
1837
parser.add_argument("--debuglevel", metavar="LEVEL",
1838
help="Debug level for stdout output")
1839
parser.add_argument("--priority", help="GnuTLS"
1840
" priority string (see GnuTLS documentation)")
1841
parser.add_argument("--servicename",
1842
metavar="NAME", help="Zeroconf service name")
1843
parser.add_argument("--configdir",
1844
default="/etc/mandos", metavar="DIR",
1845
help="Directory to search for configuration"
1846
" files")
1847
parser.add_argument("--no-dbus", action="store_false",
1848
dest="use_dbus", help="Do not provide D-Bus"
1849
" system bus interface")
1850
parser.add_argument("--no-ipv6", action="store_false",
1851
dest="use_ipv6", help="Do not use IPv6")
1852
options = parser.parse_args()
678
global main_loop_started
679
main_loop_started = False
680
681
parser = OptionParser(version = "%%prog %s" % version)
682
parser.add_option("-i", "--interface", type="string",
683
metavar="IF", help="Bind to interface IF")
684
parser.add_option("-a", "--address", type="string",
685
help="Address to listen for requests on")
686
parser.add_option("-p", "--port", type="int",
687
help="Port number to receive requests on")
688
parser.add_option("--check", action="store_true", default=False,
689
help="Run self-test")
690
parser.add_option("--debug", action="store_true",
691
help="Debug mode; run in foreground and log to"
692
" terminal")
693
parser.add_option("--priority", type="string", help="GnuTLS"
694
" priority string (see GnuTLS documentation)")
695
parser.add_option("--servicename", type="string", metavar="NAME",
696
help="Zeroconf service name")
697
parser.add_option("--configdir", type="string",
698
default="/etc/mandos", metavar="DIR",
699
help="Directory to search for configuration"
700
" files")
701
(options, args) = parser.parse_args()
1853
702
1854
703
if options.check:
1855
704
import doctest
1864
713
"priority":
1865
714
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1866
715
"servicename": "Mandos",
1867
"use_dbus": "True",
1868
"use_ipv6": "True",
1869
"debuglevel": "",
1870
716
}
1871
717
1872
718
# Parse config file for server-global settings
1873
server_config = configparser.SafeConfigParser(server_defaults)
719
server_config = ConfigParser.SafeConfigParser(server_defaults)
1874
720
del server_defaults
1875
server_config.read(os.path.join(options.configdir,
1876
"mandos.conf"))
721
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1877
722
# Convert the SafeConfigParser object to a dict
1878
723
server_settings = server_config.defaults()
1879
# Use the appropriate methods on the non-string config options
1880
for option in ("debug", "use_dbus", "use_ipv6"):
1881
server_settings[option] = server_config.getboolean("DEFAULT",
1882
option)
1883
if server_settings["port"]:
1884
server_settings["port"] = server_config.getint("DEFAULT",
1885
"port")
724
# Use getboolean on the boolean config option
725
server_settings["debug"] = server_config.getboolean\
726
("DEFAULT", "debug")
1886
727
del server_config
1887
728
1888
729
# Override the settings from the config file with command line
1889
730
# options, if set.
1890
731
for option in ("interface", "address", "port", "debug",
1891
"priority", "servicename", "configdir",
1892
"use_dbus", "use_ipv6", "debuglevel"):
732
"priority", "servicename", "configdir"):
1893
733
value = getattr(options, option)
1894
734
if value is not None:
1895
735
server_settings[option] = value
1896
736
del options
1897
# Force all strings to be unicode
1898
for option in server_settings.keys():
1899
if type(server_settings[option]) is str:
1900
server_settings[option] = unicode(server_settings[option])
1901
737
# Now we have our good server settings in "server_settings"
1902
738
1903
##################################################################
1904
1905
# For convenience
1906
739
debug = server_settings["debug"]
1907
debuglevel = server_settings["debuglevel"]
1908
use_dbus = server_settings["use_dbus"]
1909
use_ipv6 = server_settings["use_ipv6"]
740
741
if not debug:
742
syslogger.setLevel(logging.WARNING)
743
console.setLevel(logging.WARNING)
1910
744
1911
745
if server_settings["servicename"] != "Mandos":
1912
syslogger.setFormatter(logging.Formatter
1913
('Mandos (%s) [%%(process)d]:'
1914
' %%(levelname)s: %%(message)s'
746
syslogger.setFormatter(logging.Formatter\
747
('Mandos (%s): %%(levelname)s:'
748
' %%(message)s'
1915
749
% server_settings["servicename"]))
1916
750
1917
751
# Parse config file with clients
1918
client_defaults = { "timeout": "5m",
1919
"extended_timeout": "15m",
1920
"interval": "2m",
1921
"checker": "fping -q -- %%(host)s",
752
client_defaults = { "timeout": "1h",
753
"interval": "5m",
754
"checker": "fping -q -- %(host)s",
1922
755
"host": "",
1923
"approval_delay": "0s",
1924
"approval_duration": "1s",
1925
756
}
1926
client_config = configparser.SafeConfigParser(client_defaults)
757
client_config = ConfigParser.SafeConfigParser(client_defaults)
1927
758
client_config.read(os.path.join(server_settings["configdir"],
1928
759
"clients.conf"))
1929
760
1930
global mandos_dbus_service
1931
mandos_dbus_service = None
1932
1933
tcp_server = MandosServer((server_settings["address"],
1934
server_settings["port"]),
1935
ClientHandler,
1936
interface=(server_settings["interface"]
1937
or None),
1938
use_ipv6=use_ipv6,
1939
gnutls_priority=
1940
server_settings["priority"],
1941
use_dbus=use_dbus)
1942
if not debug:
1943
pidfilename = "/var/run/mandos.pid"
1944
try:
1945
pidfile = open(pidfilename, "w")
1946
except IOError:
1947
logger.error("Could not open file %r", pidfilename)
1948
1949
try:
1950
uid = pwd.getpwnam("_mandos").pw_uid
1951
gid = pwd.getpwnam("_mandos").pw_gid
1952
except KeyError:
1953
try:
1954
uid = pwd.getpwnam("mandos").pw_uid
1955
gid = pwd.getpwnam("mandos").pw_gid
1956
except KeyError:
1957
try:
1958
uid = pwd.getpwnam("nobody").pw_uid
1959
gid = pwd.getpwnam("nobody").pw_gid
1960
except KeyError:
1961
uid = 65534
1962
gid = 65534
1963
try:
1964
os.setgid(gid)
1965
os.setuid(uid)
1966
except OSError as error:
1967
if error[0] != errno.EPERM:
1968
raise error
1969
1970
if not debug and not debuglevel:
1971
syslogger.setLevel(logging.WARNING)
1972
console.setLevel(logging.WARNING)
1973
if debuglevel:
1974
level = getattr(logging, debuglevel.upper())
1975
syslogger.setLevel(level)
1976
console.setLevel(level)
761
global service
762
service = AvahiService(name = server_settings["servicename"],
763
type = "_mandos._tcp", );
764
if server_settings["interface"]:
765
service.interface = if_nametoindex\
766
(server_settings["interface"])
767
768
global main_loop
769
global bus
770
global server
771
# From the Avahi example code
772
DBusGMainLoop(set_as_default=True )
773
main_loop = gobject.MainLoop()
774
bus = dbus.SystemBus()
775
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
776
avahi.DBUS_PATH_SERVER),
777
avahi.DBUS_INTERFACE_SERVER)
778
# End of Avahi example code
779
780
clients = Set()
781
def remove_from_clients(client):
782
clients.remove(client)
783
if not clients:
784
logger.critical(u"No clients left, exiting")
785
sys.exit()
786
787
clients.update(Set(Client(name = section,
788
stop_hook = remove_from_clients,
789
config
790
= dict(client_config.items(section)))
791
for section in client_config.sections()))
792
if not clients:
793
logger.critical(u"No clients defined")
794
sys.exit(1)
1977
795
1978
796
if debug:
1979
# Enable all possible GnuTLS debugging
1980
1981
# "Use a log level over 10 to enable all debugging options."
1982
# - GnuTLS manual
1983
gnutls.library.functions.gnutls_global_set_log_level(11)
1984
1985
@gnutls.library.types.gnutls_log_func
1986
def debug_gnutls(level, string):
1987
logger.debug("GnuTLS: %s", string[:-1])
1988
1989
(gnutls.library.functions
1990
.gnutls_global_set_log_function(debug_gnutls))
1991
1992
797
# Redirect stdin so all checkers get /dev/null
1993
798
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1994
799
os.dup2(null, sys.stdin.fileno())
1997
802
else:
1998
803
# No console logging
1999
804
logger.removeHandler(console)
2000
2001
# Need to fork before connecting to D-Bus
2002
if not debug:
2003
805
# Close all input and output, do double fork, etc.
2004
806
daemon()
2005
807
2006
global main_loop
2007
# From the Avahi example code
2008
DBusGMainLoop(set_as_default=True )
2009
main_loop = gobject.MainLoop()
2010
bus = dbus.SystemBus()
2011
# End of Avahi example code
2012
if use_dbus:
2013
try:
2014
bus_name = dbus.service.BusName("se.recompile.Mandos",
2015
bus, do_not_queue=True)
2016
old_bus_name = (dbus.service.BusName
2017
("se.bsnet.fukt.Mandos", bus,
2018
do_not_queue=True))
2019
except dbus.exceptions.NameExistsException as e:
2020
logger.error(unicode(e) + ", disabling D-Bus")
2021
use_dbus = False
2022
server_settings["use_dbus"] = False
2023
tcp_server.use_dbus = False
2024
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2025
service = AvahiService(name = server_settings["servicename"],
2026
servicetype = "_mandos._tcp",
2027
protocol = protocol, bus = bus)
2028
if server_settings["interface"]:
2029
service.interface = (if_nametoindex
2030
(str(server_settings["interface"])))
2031
2032
global multiprocessing_manager
2033
multiprocessing_manager = multiprocessing.Manager()
2034
2035
client_class = Client
2036
if use_dbus:
2037
client_class = functools.partial(ClientDBusTransitional,
2038
bus = bus)
2039
def client_config_items(config, section):
2040
special_settings = {
2041
"approved_by_default":
2042
lambda: config.getboolean(section,
2043
"approved_by_default"),
2044
}
2045
for name, value in config.items(section):
2046
try:
2047
yield (name, special_settings[name]())
2048
except KeyError:
2049
yield (name, value)
2050
2051
tcp_server.clients.update(set(
2052
client_class(name = section,
2053
config= dict(client_config_items(
2054
client_config, section)))
2055
for section in client_config.sections()))
2056
if not tcp_server.clients:
2057
logger.warning("No clients defined")
808
pidfilename = "/var/run/mandos/mandos.pid"
809
pid = os.getpid()
810
try:
811
pidfile = open(pidfilename, "w")
812
pidfile.write(str(pid) + "\n")
813
pidfile.close()
814
del pidfile
815
except IOError, err:
816
logger.error(u"Could not write %s file with PID %d",
817
pidfilename, os.getpid())
818
819
def cleanup():
820
"Cleanup function; run on exit"
821
global group
822
# From the Avahi example code
823
if not group is None:
824
group.Free()
825
group = None
826
# End of Avahi example code
2058
827
828
while clients:
829
client = clients.pop()
830
client.stop_hook = None
831
client.stop()
832
833
atexit.register(cleanup)
834
2059
835
if not debug:
2060
try:
2061
with pidfile:
2062
pid = os.getpid()
2063
pidfile.write(str(pid) + "\n".encode("utf-8"))
2064
del pidfile
2065
except IOError:
2066
logger.error("Could not write to file %r with PID %d",
2067
pidfilename, pid)
2068
except NameError:
2069
# "pidfile" was never created
2070
pass
2071
del pidfilename
2072
2073
836
signal.signal(signal.SIGINT, signal.SIG_IGN)
2074
2075
837
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2076
838
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2077
839
2078
if use_dbus:
2079
class MandosDBusService(dbus.service.Object):
2080
"""A D-Bus proxy object"""
2081
def __init__(self):
2082
dbus.service.Object.__init__(self, bus, "/")
2083
_interface = "se.recompile.Mandos"
2084
2085
@dbus.service.signal(_interface, signature="o")
2086
def ClientAdded(self, objpath):
2087
"D-Bus signal"
2088
pass
2089
2090
@dbus.service.signal(_interface, signature="ss")
2091
def ClientNotFound(self, fingerprint, address):
2092
"D-Bus signal"
2093
pass
2094
2095
@dbus.service.signal(_interface, signature="os")
2096
def ClientRemoved(self, objpath, name):
2097
"D-Bus signal"
2098
pass
2099
2100
@dbus.service.method(_interface, out_signature="ao")
2101
def GetAllClients(self):
2102
"D-Bus method"
2103
return dbus.Array(c.dbus_object_path
2104
for c in tcp_server.clients)
2105
2106
@dbus.service.method(_interface,
2107
out_signature="a{oa{sv}}")
2108
def GetAllClientsWithProperties(self):
2109
"D-Bus method"
2110
return dbus.Dictionary(
2111
((c.dbus_object_path, c.GetAll(""))
2112
for c in tcp_server.clients),
2113
signature="oa{sv}")
2114
2115
@dbus.service.method(_interface, in_signature="o")
2116
def RemoveClient(self, object_path):
2117
"D-Bus method"
2118
for c in tcp_server.clients:
2119
if c.dbus_object_path == object_path:
2120
tcp_server.clients.remove(c)
2121
c.remove_from_connection()
2122
# Don't signal anything except ClientRemoved
2123
c.disable(quiet=True)
2124
# Emit D-Bus signal
2125
self.ClientRemoved(object_path, c.name)
2126
return
2127
raise KeyError(object_path)
2128
2129
del _interface
2130
2131
class MandosDBusServiceTransitional(MandosDBusService):
2132
__metaclass__ = AlternateDBusNamesMetaclass
2133
mandos_dbus_service = MandosDBusServiceTransitional()
2134
2135
def cleanup():
2136
"Cleanup function; run on exit"
2137
service.cleanup()
2138
2139
multiprocessing.active_children()
2140
while tcp_server.clients:
2141
client = tcp_server.clients.pop()
2142
if use_dbus:
2143
client.remove_from_connection()
2144
client.disable_hook = None
2145
# Don't signal anything except ClientRemoved
2146
client.disable(quiet=True)
2147
if use_dbus:
2148
# Emit D-Bus signal
2149
mandos_dbus_service.ClientRemoved(client
2150
.dbus_object_path,
2151
client.name)
2152
2153
atexit.register(cleanup)
2154
2155
for client in tcp_server.clients:
2156
if use_dbus:
2157
# Emit D-Bus signal
2158
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2159
client.enable()
2160
2161
tcp_server.enable()
2162
tcp_server.server_activate()
2163
840
for client in clients:
841
client.start()
842
843
tcp_server = IPv6_TCPServer((server_settings["address"],
844
server_settings["port"]),
845
tcp_handler,
846
settings=server_settings,
847
clients=clients)
2164
848
# Find out what port we got
2165
849
service.port = tcp_server.socket.getsockname()[1]
2166
if use_ipv6:
2167
logger.info("Now listening on address %r, port %d,"
2168
" flowinfo %d, scope_id %d"
2169
% tcp_server.socket.getsockname())
2170
else: # IPv4
2171
logger.info("Now listening on address %r, port %d"
2172
% tcp_server.socket.getsockname())
850
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
851
u" scope_id %d" % tcp_server.socket.getsockname())
2173
852
2174
853
#service.interface = tcp_server.socket.getsockname()[3]
2175
854
2176
855
try:
2177
856
# From the Avahi example code
857
server.connect_to_signal("StateChanged", server_state_changed)
2178
858
try:
2179
service.activate()
2180
except dbus.exceptions.DBusException as error:
2181
logger.critical("DBusException: %s", error)
2182
cleanup()
859
server_state_changed(server.GetState())
860
except dbus.exceptions.DBusException, error:
861
logger.critical(u"DBusException: %s", error)
2183
862
sys.exit(1)
2184
863
# End of Avahi example code
2185
864
2186
865
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2187
866
lambda *args, **kwargs:
2188
(tcp_server.handle_request
2189
(*args[2:], **kwargs) or True))
867
tcp_server.handle_request\
868
(*args[2:], **kwargs) or True)
2190
869
2191
logger.debug("Starting main loop")
870
logger.debug(u"Starting main loop")
871
main_loop_started = True
2192
872
main_loop.run()
2193
except AvahiError as error:
2194
logger.critical("AvahiError: %s", error)
2195
cleanup()
873
except AvahiError, error:
874
logger.critical(u"AvahiError: %s" + unicode(error))
2196
875
sys.exit(1)
2197
876
except KeyboardInterrupt:
2198
877
if debug:
2199
print("", file=sys.stderr)
2200
logger.debug("Server received KeyboardInterrupt")
2201
logger.debug("Server exiting")
2202
# Must run before the D-Bus bus name gets deregistered
2203
cleanup()
2204
878
print
2205
879
2206
880
if __name__ == '__main__':
2207
881
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0