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- Committer: Teddy Hogeborn
- Date: 2008-09-13 15:36:18 UTC
- Revision ID: teddy@fukt.bsnet.se-20080913153618-atp386q2bqj0ku99
* Makefile (install-client-nokey): Do "&&" instead of ";" to catch
errors.
* README: Kill the straight quotes. Add copyright notice.
* overview.xml: Improved wording.
errors.
* README: Kill the straight quotes. Add copyright notice.
* overview.xml: Improved wording.
- files added:
- etc-plugins.d-README
- files removed:
- .bzr-builddeb
- debian
- debian/po
- debian/source
- network-hooks.d
- 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
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
59
67
60
import dbus
68
import dbus.service
69
61
import gobject
70
62
import avahi
71
63
from dbus.mainloop.glib import DBusGMainLoop
72
64
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 = "1.4.1"
87
88
#logger = logging.getLogger('mandos')
65
66
version = "1.0"
67
89
68
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'))
69
syslogger = logging.handlers.SysLogHandler\
70
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
71
address = "/dev/log")
72
syslogger.setFormatter(logging.Formatter\
73
('Mandos: %(levelname)s: %(message)s'))
96
74
logger.addHandler(syslogger)
97
75
98
76
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
77
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
101
78
' %(message)s'))
102
79
logger.addHandler(console)
103
80
104
81
class AvahiError(Exception):
105
def __init__(self, value, *args, **kwargs):
82
def __init__(self, value):
106
83
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
84
def __str__(self):
85
return repr(self.value)
110
86
111
87
class AvahiServiceError(AvahiError):
112
88
pass
117
93
118
94
class AvahiService(object):
119
95
"""An Avahi (Zeroconf) service.
120
121
96
Attributes:
122
97
interface: integer; avahi.IF_UNSPEC or an interface index.
123
98
Used to optionally bind to the specified interface.
131
106
max_renames: integer; maximum number of renames
132
107
rename_count: integer; counter so we only rename after collisions
133
108
a sensible number of times
134
group: D-Bus Entry Group
135
server: D-Bus Server
136
bus: dbus.SystemBus()
137
109
"""
138
110
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):
111
type = None, port = None, TXT = None, domain = "",
112
host = "", max_renames = 32768):
142
113
self.interface = interface
143
114
self.name = name
144
self.type = servicetype
115
self.type = type
145
116
self.port = port
146
self.TXT = TXT if TXT is not None else []
117
if TXT is None:
118
self.TXT = []
119
else:
120
self.TXT = TXT
147
121
self.domain = domain
148
122
self.host = host
149
123
self.rename_count = 0
150
124
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
125
def rename(self):
157
126
"""Derived from the Avahi example code"""
158
127
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)
128
logger.critical(u"No suitable Zeroconf service name found"
129
u" after %i retries, exiting.",
130
rename_count)
162
131
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))
132
self.name = server.GetAlternativeServiceName(self.name)
133
logger.info(u"Changing Zeroconf service name to %r ...",
134
str(self.name))
135
syslogger.setFormatter(logging.Formatter\
136
('Mandos (%s): %%(levelname)s:'
137
' %%(message)s' % self.name))
171
138
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)
139
self.add()
178
140
self.rename_count += 1
179
141
def remove(self):
180
142
"""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()
143
if group is not None:
144
group.Reset()
186
145
def add(self):
187
146
"""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
147
global group
148
if group is None:
149
group = dbus.Interface\
150
(bus.get_object(avahi.DBUS_NAME,
151
server.EntryGroupNew()),
152
avahi.DBUS_INTERFACE_ENTRY_GROUP)
153
group.connect_to_signal('StateChanged',
154
entry_group_state_changed)
155
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
156
service.name, service.type)
157
group.AddService(
158
self.interface, # interface
159
avahi.PROTO_INET6, # protocol
160
dbus.UInt32(0), # flags
161
self.name, self.type,
162
self.domain, self.host,
163
dbus.UInt16(self.port),
164
avahi.string_array_to_txt_array(self.TXT))
165
group.Commit()
166
167
# From the Avahi example code:
168
group = None # our entry group
169
# End of Avahi example code
170
171
275
172
class Client(object):
276
173
"""A representation of a client host served by this server.
277
278
174
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
175
name: string; from the config file, used in log messages
176
fingerprint: string (40 or 32 hexadecimal digits); used to
177
uniquely identify the client
178
secret: bytestring; sent verbatim (over TLS) to client
179
host: string; available for use by the checker command
180
created: datetime.datetime(); object creation, not client host
181
last_checked_ok: datetime.datetime() or None if not yet checked OK
182
timeout: datetime.timedelta(); How long from last_checked_ok
183
until this client is invalid
184
interval: datetime.timedelta(); How often to start a new checker
185
stop_hook: If set, called by stop() as stop_hook(self)
186
checker: subprocess.Popen(); a running checker process used
187
to see if the client lives.
188
'None' if no process is running.
189
checker_initiator_tag: a gobject event source tag, or None
190
stop_initiator_tag: - '' -
191
checker_callback_tag: - '' -
192
checker_command: string; External command which is run to check if
193
client lives. %() expansions are done at
288
194
runtime with vars(self) as dict, so that for
289
195
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
196
Private attibutes:
197
_timeout: Real variable for 'timeout'
198
_interval: Real variable for 'interval'
199
_timeout_milliseconds: Used when calling gobject.timeout_add()
200
_interval_milliseconds: - '' -
312
201
"""
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):
202
def _set_timeout(self, timeout):
203
"Setter function for 'timeout' attribute"
204
self._timeout = timeout
205
self._timeout_milliseconds = ((self.timeout.days
206
* 24 * 60 * 60 * 1000)
207
+ (self.timeout.seconds * 1000)
208
+ (self.timeout.microseconds
209
// 1000))
210
timeout = property(lambda self: self._timeout,
211
_set_timeout)
212
del _set_timeout
213
def _set_interval(self, interval):
214
"Setter function for 'interval' attribute"
215
self._interval = interval
216
self._interval_milliseconds = ((self.interval.days
217
* 24 * 60 * 60 * 1000)
218
+ (self.interval.seconds
219
* 1000)
220
+ (self.interval.microseconds
221
// 1000))
222
interval = property(lambda self: self._interval,
223
_set_interval)
224
del _set_interval
225
def __init__(self, name = None, stop_hook=None, config={}):
335
226
"""Note: the 'checker' key in 'config' sets the
336
227
'checker_command' attribute and *not* the 'checker'
337
228
attribute."""
338
229
self.name = name
339
if config is None:
340
config = {}
341
logger.debug("Creating client %r", self.name)
230
logger.debug(u"Creating client %r", self.name)
342
231
# Uppercase and remove spaces from fingerprint for later
343
232
# comparison purposes with return value from the fingerprint()
344
233
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
logger.debug(" Fingerprint: %s", self.fingerprint)
234
self.fingerprint = config["fingerprint"].upper()\
235
.replace(u" ", u"")
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
348
237
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
238
self.secret = config["secret"].decode(u"base64")
350
239
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()
240
sf = open(config["secfile"])
241
self.secret = sf.read()
242
sf.close()
355
243
else:
356
raise TypeError("No secret or secfile for client %s"
244
raise TypeError(u"No secret or secfile for client %s"
357
245
% self.name)
358
246
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
247
self.created = datetime.datetime.now()
363
248
self.last_checked_ok = None
364
249
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
250
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
251
self.stop_hook = stop_hook
369
252
self.checker = None
370
253
self.checker_initiator_tag = None
371
self.disable_initiator_tag = None
372
self.expires = None
254
self.stop_initiator_tag = None
373
255
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):
256
self.check_command = config["checker"]
257
def start(self):
395
258
"""Start this client's checker and timeout hooks"""
396
if getattr(self, "enabled", False):
397
# Already enabled
398
return
399
self.send_changedstate()
400
259
# Schedule a new checker to be started an 'interval' from now,
401
260
# 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()
261
self.checker_initiator_tag = gobject.timeout_add\
262
(self._interval_milliseconds,
263
self.start_checker)
412
264
# Also start a new checker *right now*.
413
265
self.start_checker()
414
415
def disable(self, quiet=True):
416
"""Disable this client."""
417
if not getattr(self, "enabled", False):
266
# Schedule a stop() when 'timeout' has passed
267
self.stop_initiator_tag = gobject.timeout_add\
268
(self._timeout_milliseconds,
269
self.stop)
270
def stop(self):
271
"""Stop this client.
272
The possibility that a client might be restarted is left open,
273
but not currently used."""
274
# If this client doesn't have a secret, it is already stopped.
275
if hasattr(self, "secret") and self.secret:
276
logger.info(u"Stopping client %s", self.name)
277
self.secret = None
278
else:
418
279
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
280
if getattr(self, "stop_initiator_tag", False):
281
gobject.source_remove(self.stop_initiator_tag)
282
self.stop_initiator_tag = None
427
283
if getattr(self, "checker_initiator_tag", False):
428
284
gobject.source_remove(self.checker_initiator_tag)
429
285
self.checker_initiator_tag = None
430
286
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
self.enabled = False
287
if self.stop_hook:
288
self.stop_hook(self)
434
289
# Do not run this again if called by a gobject.timeout_add
435
290
return False
436
437
291
def __del__(self):
438
self.disable_hook = None
439
self.disable()
440
441
def checker_callback(self, pid, condition, command):
292
self.stop_hook = None
293
self.stop()
294
def checker_callback(self, pid, condition):
442
295
"""The checker has completed, so take appropriate actions."""
296
now = datetime.datetime.now()
443
297
self.checker_callback_tag = None
444
298
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?",
299
if os.WIFEXITED(condition) \
300
and (os.WEXITSTATUS(condition) == 0):
301
logger.info(u"Checker for %(name)s succeeded",
302
vars(self))
303
self.last_checked_ok = now
304
gobject.source_remove(self.stop_initiator_tag)
305
self.stop_initiator_tag = gobject.timeout_add\
306
(self._timeout_milliseconds,
307
self.stop)
308
elif not os.WIFEXITED(condition):
309
logger.warning(u"Checker for %(name)s crashed?",
456
310
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
if self.disable_initiator_tag is not None:
468
gobject.source_remove(self.disable_initiator_tag)
469
if getattr(self, "enabled", False):
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
473
self.expires = datetime.datetime.utcnow() + timeout
474
475
def need_approval(self):
476
self.last_approval_request = datetime.datetime.utcnow()
477
311
else:
312
logger.info(u"Checker for %(name)s failed",
313
vars(self))
478
314
def start_checker(self):
479
315
"""Start a new checker subprocess if one is not running.
480
481
316
If a checker already exists, leave it running and do
482
317
nothing."""
483
318
# The reason for not killing a running checker is that if we
486
321
# client would inevitably timeout, since no checker would get
487
322
# a chance to run to completion. If we instead leave running
488
323
# checkers alone, the checker would have to take more time
489
# than 'timeout' for the client to be disabled, which is as it
490
# should be.
491
492
# If a checker exists, make sure it is not a zombie
493
try:
494
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
498
raise error
499
else:
500
if pid:
501
logger.warning("Checker was a zombie")
502
gobject.source_remove(self.checker_callback_tag)
503
self.checker_callback(pid, status,
504
self.current_checker_command)
505
# Start a new checker if needed
324
# than 'timeout' for the client to be declared invalid, which
325
# is as it should be.
506
326
if self.checker is None:
507
327
try:
508
# In case checker_command has exactly one % operator
509
command = self.checker_command % self.host
328
# In case check_command has exactly one % operator
329
command = self.check_command % self.host
510
330
except TypeError:
511
331
# Escape attributes for the shell
512
escaped_attrs = dict(
513
(attr,
514
re.escape(unicode(str(getattr(self, attr, "")),
515
errors=
516
'replace')))
517
for attr in
518
self.runtime_expansions)
519
332
escaped_attrs = dict((key, re.escape(str(val)))
333
for key, val in
334
vars(self).iteritems())
520
335
try:
521
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
336
command = self.check_command % escaped_attrs
337
except TypeError, error:
338
logger.error(u'Could not format string "%s":'
339
u' %s', self.check_command, error)
525
340
return True # Try again later
526
self.current_checker_command = command
527
341
try:
528
logger.info("Starting checker %r for %s",
342
logger.info(u"Starting checker %r for %s",
529
343
command, self.name)
530
344
# We don't need to redirect stdout and stderr, since
531
345
# in normal mode, that is already done by daemon(),
534
348
self.checker = subprocess.Popen(command,
535
349
close_fds=True,
536
350
shell=True, cwd="/")
537
self.checker_callback_tag = (gobject.child_watch_add
538
(self.checker.pid,
539
self.checker_callback,
540
data=command))
541
# The checker may have completed before the gobject
542
# watch was added. Check for this.
543
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
544
if pid:
545
gobject.source_remove(self.checker_callback_tag)
546
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
351
self.checker_callback_tag = gobject.child_watch_add\
352
(self.checker.pid,
353
self.checker_callback)
354
except OSError, error:
355
logger.error(u"Failed to start subprocess: %s",
549
356
error)
550
357
# Re-run this periodically if run by gobject.timeout_add
551
358
return True
552
553
359
def stop_checker(self):
554
360
"""Force the checker process, if any, to stop."""
555
361
if self.checker_callback_tag:
557
363
self.checker_callback_tag = None
558
364
if getattr(self, "checker", None) is None:
559
365
return
560
logger.debug("Stopping checker for %(name)s", vars(self))
366
logger.debug(u"Stopping checker for %(name)s", vars(self))
561
367
try:
562
368
os.kill(self.checker.pid, signal.SIGTERM)
563
#time.sleep(0.5)
369
#os.sleep(0.5)
564
370
#if self.checker.poll() is None:
565
371
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
372
except OSError, error:
567
373
if error.errno != errno.ESRCH: # No such process
568
374
raise
569
375
self.checker = None
570
571
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
574
"""Decorators for marking methods of a DBusObjectWithProperties to
575
become properties on the D-Bus.
576
577
The decorated method will be called with no arguments by "Get"
578
and with one argument by "Set".
579
580
The parameters, where they are supported, are the same as
581
dbus.service.method, except there is only "signature", since the
582
type from Get() and the type sent to Set() is the same.
583
"""
584
# Encoding deeply encoded byte arrays is not supported yet by the
585
# "Set" method, so we fail early here:
586
if byte_arrays and signature != "ay":
587
raise ValueError("Byte arrays not supported for non-'ay'"
588
" signature %r" % signature)
589
def decorator(func):
590
func._dbus_is_property = True
591
func._dbus_interface = dbus_interface
592
func._dbus_signature = signature
593
func._dbus_access = access
594
func._dbus_name = func.__name__
595
if func._dbus_name.endswith("_dbus_property"):
596
func._dbus_name = func._dbus_name[:-14]
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
598
return func
599
return decorator
600
601
602
class DBusPropertyException(dbus.exceptions.DBusException):
603
"""A base class for D-Bus property-related exceptions
604
"""
605
def __unicode__(self):
606
return unicode(str(self))
607
608
609
class DBusPropertyAccessException(DBusPropertyException):
610
"""A property's access permissions disallows an operation.
611
"""
612
pass
613
614
615
class DBusPropertyNotFound(DBusPropertyException):
616
"""An attempt was made to access a non-existing property.
617
"""
618
pass
619
620
621
class DBusObjectWithProperties(dbus.service.Object):
622
"""A D-Bus object with properties.
623
624
Classes inheriting from this can use the dbus_service_property
625
decorator to expose methods as D-Bus properties. It exposes the
626
standard Get(), Set(), and GetAll() methods on the D-Bus.
627
"""
628
629
@staticmethod
630
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
632
633
def _get_all_dbus_properties(self):
634
"""Returns a generator of (name, attribute) pairs
635
"""
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
638
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
640
641
def _get_dbus_property(self, interface_name, property_name):
642
"""Returns a bound method if one exists which is a D-Bus
643
property with the specified name and interface.
644
"""
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
648
if (value._dbus_name == property_name
649
and value._dbus_interface == interface_name):
650
return value.__get__(self)
651
652
# No such property
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
655
+ property_name)
656
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
658
out_signature="v")
659
def Get(self, interface_name, property_name):
660
"""Standard D-Bus property Get() method, see D-Bus standard.
661
"""
662
prop = self._get_dbus_property(interface_name, property_name)
663
if prop._dbus_access == "write":
664
raise DBusPropertyAccessException(property_name)
665
value = prop()
666
if not hasattr(value, "variant_level"):
667
return value
668
return type(value)(value, variant_level=value.variant_level+1)
669
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
671
def Set(self, interface_name, property_name, value):
672
"""Standard D-Bus property Set() method, see D-Bus standard.
673
"""
674
prop = self._get_dbus_property(interface_name, property_name)
675
if prop._dbus_access == "read":
676
raise DBusPropertyAccessException(property_name)
677
if prop._dbus_get_args_options["byte_arrays"]:
678
# The byte_arrays option is not supported yet on
679
# signatures other than "ay".
680
if prop._dbus_signature != "ay":
681
raise ValueError
682
value = dbus.ByteArray(''.join(unichr(byte)
683
for byte in value))
684
prop(value)
685
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
687
out_signature="a{sv}")
688
def GetAll(self, interface_name):
689
"""Standard D-Bus property GetAll() method, see D-Bus
690
standard.
691
692
Note: Will not include properties with access="write".
693
"""
694
all = {}
695
for name, prop in self._get_all_dbus_properties():
696
if (interface_name
697
and interface_name != prop._dbus_interface):
698
# Interface non-empty but did not match
699
continue
700
# Ignore write-only properties
701
if prop._dbus_access == "write":
702
continue
703
value = prop()
704
if not hasattr(value, "variant_level"):
705
all[name] = value
706
continue
707
all[name] = type(value)(value, variant_level=
708
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
710
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
712
out_signature="s",
713
path_keyword='object_path',
714
connection_keyword='connection')
715
def Introspect(self, object_path, connection):
716
"""Standard D-Bus method, overloaded to insert property tags.
717
"""
718
xmlstring = dbus.service.Object.Introspect(self, object_path,
719
connection)
720
try:
721
document = xml.dom.minidom.parseString(xmlstring)
722
def make_tag(document, name, prop):
723
e = document.createElement("property")
724
e.setAttribute("name", name)
725
e.setAttribute("type", prop._dbus_signature)
726
e.setAttribute("access", prop._dbus_access)
727
return e
728
for if_tag in document.getElementsByTagName("interface"):
729
for tag in (make_tag(document, name, prop)
730
for name, prop
731
in self._get_all_dbus_properties()
732
if prop._dbus_interface
733
== if_tag.getAttribute("name")):
734
if_tag.appendChild(tag)
735
# Add the names to the return values for the
736
# "org.freedesktop.DBus.Properties" methods
737
if (if_tag.getAttribute("name")
738
== "org.freedesktop.DBus.Properties"):
739
for cn in if_tag.getElementsByTagName("method"):
740
if cn.getAttribute("name") == "Get":
741
for arg in cn.getElementsByTagName("arg"):
742
if (arg.getAttribute("direction")
743
== "out"):
744
arg.setAttribute("name", "value")
745
elif cn.getAttribute("name") == "GetAll":
746
for arg in cn.getElementsByTagName("arg"):
747
if (arg.getAttribute("direction")
748
== "out"):
749
arg.setAttribute("name", "props")
750
xmlstring = document.toxml("utf-8")
751
document.unlink()
752
except (AttributeError, xml.dom.DOMException,
753
xml.parsers.expat.ExpatError) as error:
754
logger.error("Failed to override Introspection method",
755
error)
756
return xmlstring
757
758
759
def datetime_to_dbus (dt, variant_level=0):
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
761
if dt is None:
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
765
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
.__metaclass__):
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
770
"""
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
778
# Ignore non-D-Bus attributes, and D-Bus attributes
779
# with the wrong interface name
780
if (not hasattr(attribute, "_dbus_interface")
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
783
continue
784
# Create an alternate D-Bus interface name based on
785
# the current name
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
789
# Is this a D-Bus signal?
790
if getattr(attribute, "_dbus_is_signal", False):
791
# Extract the original non-method function by
792
# black magic
793
nonmethod_func = (dict(
794
zip(attribute.func_code.co_freevars,
795
attribute.__closure__))["func"]
796
.cell_contents)
797
# Create a new, but exactly alike, function
798
# object, and decorate it to be a new D-Bus signal
799
# with the alternate D-Bus interface name
800
new_function = (dbus.service.signal
801
(alt_interface,
802
attribute._dbus_signature)
803
(types.FunctionType(
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
809
# Define a creator of a function to call both the
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
812
def fixscope(func1, func2):
813
"""This function is a scope container to pass
814
func1 and func2 to the "call_both" function
815
outside of its arguments"""
816
def call_both(*args, **kwargs):
817
"""This function will emit two D-Bus
818
signals by calling func1 and func2"""
819
func1(*args, **kwargs)
820
func2(*args, **kwargs)
821
return call_both
822
# Create the "call_both" function and add it to
823
# the class
824
attr[attrname] = fixscope(attribute,
825
new_function)
826
# Is this a D-Bus method?
827
elif getattr(attribute, "_dbus_is_method", False):
828
# Create a new, but exactly alike, function
829
# object. Decorate it to be a new D-Bus method
830
# with the alternate D-Bus interface name. Add it
831
# to the class.
832
attr[attrname] = (dbus.service.method
833
(alt_interface,
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
836
(types.FunctionType
837
(attribute.func_code,
838
attribute.func_globals,
839
attribute.func_name,
840
attribute.func_defaults,
841
attribute.func_closure)))
842
# Is this a D-Bus property?
843
elif getattr(attribute, "_dbus_is_property", False):
844
# Create a new, but exactly alike, function
845
# object, and decorate it to be a new D-Bus
846
# property with the alternate D-Bus interface
847
# name. Add it to the class.
848
attr[attrname] = (dbus_service_property
849
(alt_interface,
850
attribute._dbus_signature,
851
attribute._dbus_access,
852
attribute
853
._dbus_get_args_options
854
["byte_arrays"])
855
(types.FunctionType
856
(attribute.func_code,
857
attribute.func_globals,
858
attribute.func_name,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
862
863
class ClientDBus(Client, DBusObjectWithProperties):
864
"""A Client class using D-Bus
865
866
Attributes:
867
dbus_object_path: dbus.ObjectPath
868
bus: dbus.SystemBus()
869
"""
870
871
runtime_expansions = (Client.runtime_expansions
872
+ ("dbus_object_path",))
873
874
# dbus.service.Object doesn't use super(), so we can't either.
875
876
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
878
self.bus = bus
879
Client.__init__(self, *args, **kwargs)
880
# Only now, when this client is initialized, can it show up on
881
# the D-Bus
882
client_object_name = unicode(self.name).translate(
883
{ord("."): ord("_"),
884
ord("-"): ord("_")})
885
self.dbus_object_path = (dbus.ObjectPath
886
("/clients/" + client_object_name))
887
DBusObjectWithProperties.__init__(self, self.bus,
888
self.dbus_object_path)
889
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
892
variant_level=1):
893
""" Modify a variable so that it's a property which announces
894
its changes to DBus.
895
896
transform_fun: Function that takes a value and a variant_level
897
and transforms it to a D-Bus type.
898
dbus_name: D-Bus name of the variable
899
type_func: Function that transform the value before sending it
900
to the D-Bus. Default: no transform
901
variant_level: D-Bus variant level. Default: 1
902
"""
903
attrname = "_{0}".format(dbus_name)
904
def setter(self, value):
905
if hasattr(self, "dbus_object_path"):
906
if (not hasattr(self, attrname) or
907
type_func(getattr(self, attrname, None))
908
!= type_func(value)):
909
dbus_value = transform_func(type_func(value),
910
variant_level
911
=variant_level)
912
self.PropertyChanged(dbus.String(dbus_name),
913
dbus_value)
914
setattr(self, attrname, value)
915
916
return property(lambda self: getattr(self, attrname), setter)
917
918
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
920
approvals_pending = notifychangeproperty(dbus.Boolean,
921
"ApprovalPending",
922
type_func = bool)
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
924
last_enabled = notifychangeproperty(datetime_to_dbus,
925
"LastEnabled")
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
928
checker is not None)
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
930
"LastCheckedOK")
931
last_approval_request = notifychangeproperty(
932
datetime_to_dbus, "LastApprovalRequest")
933
approved_by_default = notifychangeproperty(dbus.Boolean,
934
"ApprovedByDefault")
935
approval_delay = notifychangeproperty(dbus.UInt16,
936
"ApprovalDelay",
937
type_func =
938
_timedelta_to_milliseconds)
939
approval_duration = notifychangeproperty(
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
942
host = notifychangeproperty(dbus.String, "Host")
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
944
type_func =
945
_timedelta_to_milliseconds)
946
extended_timeout = notifychangeproperty(
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
950
"Interval",
951
type_func =
952
_timedelta_to_milliseconds)
953
checker_command = notifychangeproperty(dbus.String, "Checker")
954
955
del notifychangeproperty
956
957
def __del__(self, *args, **kwargs):
958
try:
959
self.remove_from_connection()
960
except LookupError:
961
pass
962
if hasattr(DBusObjectWithProperties, "__del__"):
963
DBusObjectWithProperties.__del__(self, *args, **kwargs)
964
Client.__del__(self, *args, **kwargs)
965
966
def checker_callback(self, pid, condition, command,
967
*args, **kwargs):
968
self.checker_callback_tag = None
969
self.checker = None
970
if os.WIFEXITED(condition):
971
exitstatus = os.WEXITSTATUS(condition)
972
# Emit D-Bus signal
973
self.CheckerCompleted(dbus.Int16(exitstatus),
974
dbus.Int64(condition),
975
dbus.String(command))
976
else:
977
# Emit D-Bus signal
978
self.CheckerCompleted(dbus.Int16(-1),
979
dbus.Int64(condition),
980
dbus.String(command))
981
982
return Client.checker_callback(self, pid, condition, command,
983
*args, **kwargs)
984
985
def start_checker(self, *args, **kwargs):
986
old_checker = self.checker
987
if self.checker is not None:
988
old_checker_pid = self.checker.pid
989
else:
990
old_checker_pid = None
991
r = Client.start_checker(self, *args, **kwargs)
992
# Only if new checker process was started
993
if (self.checker is not None
994
and old_checker_pid != self.checker.pid):
995
# Emit D-Bus signal
996
self.CheckerStarted(self.current_checker_command)
997
return r
998
999
def _reset_approved(self):
1000
self._approved = None
1001
return False
1002
1003
def approve(self, value=True):
1004
self.send_changedstate()
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1007
(self.approval_duration),
1008
self._reset_approved)
1009
1010
1011
## D-Bus methods, signals & properties
1012
_interface = "se.recompile.Mandos.Client"
1013
1014
## Signals
1015
1016
# CheckerCompleted - signal
1017
@dbus.service.signal(_interface, signature="nxs")
1018
def CheckerCompleted(self, exitcode, waitstatus, command):
1019
"D-Bus signal"
1020
pass
1021
1022
# CheckerStarted - signal
1023
@dbus.service.signal(_interface, signature="s")
1024
def CheckerStarted(self, command):
1025
"D-Bus signal"
1026
pass
1027
1028
# PropertyChanged - signal
1029
@dbus.service.signal(_interface, signature="sv")
1030
def PropertyChanged(self, property, value):
1031
"D-Bus signal"
1032
pass
1033
1034
# GotSecret - signal
1035
@dbus.service.signal(_interface)
1036
def GotSecret(self):
1037
"""D-Bus signal
1038
Is sent after a successful transfer of secret from the Mandos
1039
server to mandos-client
1040
"""
1041
pass
1042
1043
# Rejected - signal
1044
@dbus.service.signal(_interface, signature="s")
1045
def Rejected(self, reason):
1046
"D-Bus signal"
1047
pass
1048
1049
# NeedApproval - signal
1050
@dbus.service.signal(_interface, signature="tb")
1051
def NeedApproval(self, timeout, default):
1052
"D-Bus signal"
1053
return self.need_approval()
1054
1055
## Methods
1056
1057
# Approve - method
1058
@dbus.service.method(_interface, in_signature="b")
1059
def Approve(self, value):
1060
self.approve(value)
1061
1062
# CheckedOK - method
1063
@dbus.service.method(_interface)
1064
def CheckedOK(self):
1065
self.checked_ok()
1066
1067
# Enable - method
1068
@dbus.service.method(_interface)
1069
def Enable(self):
1070
"D-Bus method"
1071
self.enable()
1072
1073
# StartChecker - method
1074
@dbus.service.method(_interface)
1075
def StartChecker(self):
1076
"D-Bus method"
1077
self.start_checker()
1078
1079
# Disable - method
1080
@dbus.service.method(_interface)
1081
def Disable(self):
1082
"D-Bus method"
1083
self.disable()
1084
1085
# StopChecker - method
1086
@dbus.service.method(_interface)
1087
def StopChecker(self):
1088
self.stop_checker()
1089
1090
## Properties
1091
1092
# ApprovalPending - property
1093
@dbus_service_property(_interface, signature="b", access="read")
1094
def ApprovalPending_dbus_property(self):
1095
return dbus.Boolean(bool(self.approvals_pending))
1096
1097
# ApprovedByDefault - property
1098
@dbus_service_property(_interface, signature="b",
1099
access="readwrite")
1100
def ApprovedByDefault_dbus_property(self, value=None):
1101
if value is None: # get
1102
return dbus.Boolean(self.approved_by_default)
1103
self.approved_by_default = bool(value)
1104
1105
# ApprovalDelay - property
1106
@dbus_service_property(_interface, signature="t",
1107
access="readwrite")
1108
def ApprovalDelay_dbus_property(self, value=None):
1109
if value is None: # get
1110
return dbus.UInt64(self.approval_delay_milliseconds())
1111
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1112
1113
# ApprovalDuration - property
1114
@dbus_service_property(_interface, signature="t",
1115
access="readwrite")
1116
def ApprovalDuration_dbus_property(self, value=None):
1117
if value is None: # get
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1119
self.approval_duration))
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1121
1122
# Name - property
1123
@dbus_service_property(_interface, signature="s", access="read")
1124
def Name_dbus_property(self):
1125
return dbus.String(self.name)
1126
1127
# Fingerprint - property
1128
@dbus_service_property(_interface, signature="s", access="read")
1129
def Fingerprint_dbus_property(self):
1130
return dbus.String(self.fingerprint)
1131
1132
# Host - property
1133
@dbus_service_property(_interface, signature="s",
1134
access="readwrite")
1135
def Host_dbus_property(self, value=None):
1136
if value is None: # get
1137
return dbus.String(self.host)
1138
self.host = value
1139
1140
# Created - property
1141
@dbus_service_property(_interface, signature="s", access="read")
1142
def Created_dbus_property(self):
1143
return dbus.String(datetime_to_dbus(self.created))
1144
1145
# LastEnabled - property
1146
@dbus_service_property(_interface, signature="s", access="read")
1147
def LastEnabled_dbus_property(self):
1148
return datetime_to_dbus(self.last_enabled)
1149
1150
# Enabled - property
1151
@dbus_service_property(_interface, signature="b",
1152
access="readwrite")
1153
def Enabled_dbus_property(self, value=None):
1154
if value is None: # get
1155
return dbus.Boolean(self.enabled)
1156
if value:
1157
self.enable()
1158
else:
1159
self.disable()
1160
1161
# LastCheckedOK - property
1162
@dbus_service_property(_interface, signature="s",
1163
access="readwrite")
1164
def LastCheckedOK_dbus_property(self, value=None):
1165
if value is not None:
1166
self.checked_ok()
1167
return
1168
return datetime_to_dbus(self.last_checked_ok)
1169
1170
# Expires - property
1171
@dbus_service_property(_interface, signature="s", access="read")
1172
def Expires_dbus_property(self):
1173
return datetime_to_dbus(self.expires)
1174
1175
# LastApprovalRequest - property
1176
@dbus_service_property(_interface, signature="s", access="read")
1177
def LastApprovalRequest_dbus_property(self):
1178
return datetime_to_dbus(self.last_approval_request)
1179
1180
# Timeout - property
1181
@dbus_service_property(_interface, signature="t",
1182
access="readwrite")
1183
def Timeout_dbus_property(self, value=None):
1184
if value is None: # get
1185
return dbus.UInt64(self.timeout_milliseconds())
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
1187
if getattr(self, "disable_initiator_tag", None) is None:
1188
return
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
1198
if time_to_die <= 0:
1199
# The timeout has passed
1200
self.disable()
1201
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
1207
1208
# ExtendedTimeout - property
1209
@dbus_service_property(_interface, signature="t",
1210
access="readwrite")
1211
def ExtendedTimeout_dbus_property(self, value=None):
1212
if value is None: # get
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1215
1216
# Interval - property
1217
@dbus_service_property(_interface, signature="t",
1218
access="readwrite")
1219
def Interval_dbus_property(self, value=None):
1220
if value is None: # get
1221
return dbus.UInt64(self.interval_milliseconds())
1222
self.interval = datetime.timedelta(0, 0, 0, value)
1223
if getattr(self, "checker_initiator_tag", None) is None:
1224
return
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
1230
1231
# Checker - property
1232
@dbus_service_property(_interface, signature="s",
1233
access="readwrite")
1234
def Checker_dbus_property(self, value=None):
1235
if value is None: # get
1236
return dbus.String(self.checker_command)
1237
self.checker_command = value
1238
1239
# CheckerRunning - property
1240
@dbus_service_property(_interface, signature="b",
1241
access="readwrite")
1242
def CheckerRunning_dbus_property(self, value=None):
1243
if value is None: # get
1244
return dbus.Boolean(self.checker is not None)
1245
if value:
1246
self.start_checker()
1247
else:
1248
self.stop_checker()
1249
1250
# ObjectPath - property
1251
@dbus_service_property(_interface, signature="o", access="read")
1252
def ObjectPath_dbus_property(self):
1253
return self.dbus_object_path # is already a dbus.ObjectPath
1254
1255
# Secret = property
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
1258
def Secret_dbus_property(self, value):
1259
self.secret = str(value)
1260
1261
del _interface
1262
1263
1264
class ProxyClient(object):
1265
def __init__(self, child_pipe, fpr, address):
1266
self._pipe = child_pipe
1267
self._pipe.send(('init', fpr, address))
1268
if not self._pipe.recv():
1269
raise KeyError()
1270
1271
def __getattribute__(self, name):
1272
if(name == '_pipe'):
1273
return super(ProxyClient, self).__getattribute__(name)
1274
self._pipe.send(('getattr', name))
1275
data = self._pipe.recv()
1276
if data[0] == 'data':
1277
return data[1]
1278
if data[0] == 'function':
1279
def func(*args, **kwargs):
1280
self._pipe.send(('funcall', name, args, kwargs))
1281
return self._pipe.recv()[1]
1282
return func
1283
1284
def __setattr__(self, name, value):
1285
if(name == '_pipe'):
1286
return super(ProxyClient, self).__setattr__(name, value)
1287
self._pipe.send(('setattr', name, value))
1288
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
1291
1292
class ClientHandler(socketserver.BaseRequestHandler, object):
1293
"""A class to handle client connections.
1294
1295
Instantiated once for each connection to handle it.
376
def still_valid(self):
377
"""Has the timeout not yet passed for this client?"""
378
now = datetime.datetime.now()
379
if self.last_checked_ok is None:
380
return now < (self.created + self.timeout)
381
else:
382
return now < (self.last_checked_ok + self.timeout)
383
384
385
def peer_certificate(session):
386
"Return the peer's OpenPGP certificate as a bytestring"
387
# If not an OpenPGP certificate...
388
if gnutls.library.functions.gnutls_certificate_type_get\
389
(session._c_object) \
390
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
391
# ...do the normal thing
392
return session.peer_certificate
393
list_size = ctypes.c_uint()
394
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
395
(session._c_object, ctypes.byref(list_size))
396
if list_size.value == 0:
397
return None
398
cert = cert_list[0]
399
return ctypes.string_at(cert.data, cert.size)
400
401
402
def fingerprint(openpgp):
403
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
404
# New GnuTLS "datum" with the OpenPGP public key
405
datum = gnutls.library.types.gnutls_datum_t\
406
(ctypes.cast(ctypes.c_char_p(openpgp),
407
ctypes.POINTER(ctypes.c_ubyte)),
408
ctypes.c_uint(len(openpgp)))
409
# New empty GnuTLS certificate
410
crt = gnutls.library.types.gnutls_openpgp_crt_t()
411
gnutls.library.functions.gnutls_openpgp_crt_init\
412
(ctypes.byref(crt))
413
# Import the OpenPGP public key into the certificate
414
gnutls.library.functions.gnutls_openpgp_crt_import\
415
(crt, ctypes.byref(datum),
416
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
417
# Verify the self signature in the key
418
crtverify = ctypes.c_uint();
419
gnutls.library.functions.gnutls_openpgp_crt_verify_self\
420
(crt, 0, ctypes.byref(crtverify))
421
if crtverify.value != 0:
422
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
423
raise gnutls.errors.CertificateSecurityError("Verify failed")
424
# New buffer for the fingerprint
425
buffer = ctypes.create_string_buffer(20)
426
buffer_length = ctypes.c_size_t()
427
# Get the fingerprint from the certificate into the buffer
428
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
429
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
430
# Deinit the certificate
431
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
432
# Convert the buffer to a Python bytestring
433
fpr = ctypes.string_at(buffer, buffer_length.value)
434
# Convert the bytestring to hexadecimal notation
435
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
436
return hex_fpr
437
438
439
class tcp_handler(SocketServer.BaseRequestHandler, object):
440
"""A TCP request handler class.
441
Instantiated by IPv6_TCPServer for each request to handle it.
1296
442
Note: This will run in its own forked process."""
1297
443
1298
444
def handle(self):
1299
with contextlib.closing(self.server.child_pipe) as child_pipe:
1300
logger.info("TCP connection from: %s",
1301
unicode(self.client_address))
1302
logger.debug("Pipe FD: %d",
1303
self.server.child_pipe.fileno())
1304
1305
session = (gnutls.connection
1306
.ClientSession(self.request,
1307
gnutls.connection
1308
.X509Credentials()))
1309
1310
# Note: gnutls.connection.X509Credentials is really a
1311
# generic GnuTLS certificate credentials object so long as
1312
# no X.509 keys are added to it. Therefore, we can use it
1313
# here despite using OpenPGP certificates.
1314
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1318
# "+DHE-DSS"))
1319
# Use a fallback default, since this MUST be set.
1320
priority = self.server.gnutls_priority
1321
if priority is None:
1322
priority = "NORMAL"
1323
(gnutls.library.functions
1324
.gnutls_priority_set_direct(session._c_object,
1325
priority, None))
1326
1327
# Start communication using the Mandos protocol
1328
# Get protocol number
1329
line = self.request.makefile().readline()
1330
logger.debug("Protocol version: %r", line)
1331
try:
1332
if int(line.strip().split()[0]) > 1:
1333
raise RuntimeError
1334
except (ValueError, IndexError, RuntimeError) as error:
1335
logger.error("Unknown protocol version: %s", error)
1336
return
1337
1338
# Start GnuTLS connection
1339
try:
1340
session.handshake()
1341
except gnutls.errors.GNUTLSError as error:
1342
logger.warning("Handshake failed: %s", error)
1343
# Do not run session.bye() here: the session is not
1344
# established. Just abandon the request.
1345
return
1346
logger.debug("Handshake succeeded")
1347
1348
approval_required = False
1349
try:
1350
try:
1351
fpr = self.fingerprint(self.peer_certificate
1352
(session))
1353
except (TypeError,
1354
gnutls.errors.GNUTLSError) as error:
1355
logger.warning("Bad certificate: %s", error)
1356
return
1357
logger.debug("Fingerprint: %s", fpr)
1358
1359
try:
1360
client = ProxyClient(child_pipe, fpr,
1361
self.client_address)
1362
except KeyError:
1363
return
1364
1365
if client.approval_delay:
1366
delay = client.approval_delay
1367
client.approvals_pending += 1
1368
approval_required = True
1369
1370
while True:
1371
if not client.enabled:
1372
logger.info("Client %s is disabled",
1373
client.name)
1374
if self.server.use_dbus:
1375
# Emit D-Bus signal
1376
client.Rejected("Disabled")
1377
return
1378
1379
if client._approved or not client.approval_delay:
1380
#We are approved or approval is disabled
1381
break
1382
elif client._approved is None:
1383
logger.info("Client %s needs approval",
1384
client.name)
1385
if self.server.use_dbus:
1386
# Emit D-Bus signal
1387
client.NeedApproval(
1388
client.approval_delay_milliseconds(),
1389
client.approved_by_default)
1390
else:
1391
logger.warning("Client %s was not approved",
1392
client.name)
1393
if self.server.use_dbus:
1394
# Emit D-Bus signal
1395
client.Rejected("Denied")
1396
return
1397
1398
#wait until timeout or approved
1399
time = datetime.datetime.now()
1400
client.changedstate.acquire()
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
1404
client.changedstate.release()
1405
time2 = datetime.datetime.now()
1406
if (time2 - time) >= delay:
1407
if not client.approved_by_default:
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1410
client.name)
1411
if self.server.use_dbus:
1412
# Emit D-Bus signal
1413
client.Rejected("Approval timed out")
1414
return
1415
else:
1416
break
1417
else:
1418
delay -= time2 - time
1419
1420
sent_size = 0
1421
while sent_size < len(client.secret):
1422
try:
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1426
return
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1430
sent_size += sent
1431
1432
logger.info("Sending secret to %s", client.name)
1433
# bump the timeout using extended_timeout
1434
client.checked_ok(client.extended_timeout)
1435
if self.server.use_dbus:
1436
# Emit D-Bus signal
1437
client.GotSecret()
1438
1439
finally:
1440
if approval_required:
1441
client.approvals_pending -= 1
1442
try:
1443
session.bye()
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
1446
1447
@staticmethod
1448
def peer_certificate(session):
1449
"Return the peer's OpenPGP certificate as a bytestring"
1450
# If not an OpenPGP certificate...
1451
if (gnutls.library.functions
1452
.gnutls_certificate_type_get(session._c_object)
1453
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1454
# ...do the normal thing
1455
return session.peer_certificate
1456
list_size = ctypes.c_uint(1)
1457
cert_list = (gnutls.library.functions
1458
.gnutls_certificate_get_peers
1459
(session._c_object, ctypes.byref(list_size)))
1460
if not bool(cert_list) and list_size.value != 0:
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
1463
if list_size.value == 0:
1464
return None
1465
cert = cert_list[0]
1466
return ctypes.string_at(cert.data, cert.size)
1467
1468
@staticmethod
1469
def fingerprint(openpgp):
1470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1471
# New GnuTLS "datum" with the OpenPGP public key
1472
datum = (gnutls.library.types
1473
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1474
ctypes.POINTER
1475
(ctypes.c_ubyte)),
1476
ctypes.c_uint(len(openpgp))))
1477
# New empty GnuTLS certificate
1478
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1479
(gnutls.library.functions
1480
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1481
# Import the OpenPGP public key into the certificate
1482
(gnutls.library.functions
1483
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
gnutls.library.constants
1485
.GNUTLS_OPENPGP_FMT_RAW))
1486
# Verify the self signature in the key
1487
crtverify = ctypes.c_uint()
1488
(gnutls.library.functions
1489
.gnutls_openpgp_crt_verify_self(crt, 0,
1490
ctypes.byref(crtverify)))
1491
if crtverify.value != 0:
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
raise (gnutls.errors.CertificateSecurityError
1494
("Verify failed"))
1495
# New buffer for the fingerprint
1496
buf = ctypes.create_string_buffer(20)
1497
buf_len = ctypes.c_size_t()
1498
# Get the fingerprint from the certificate into the buffer
1499
(gnutls.library.functions
1500
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
ctypes.byref(buf_len)))
1502
# Deinit the certificate
1503
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1504
# Convert the buffer to a Python bytestring
1505
fpr = ctypes.string_at(buf, buf_len.value)
1506
# Convert the bytestring to hexadecimal notation
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1508
return hex_fpr
1509
1510
1511
class MultiprocessingMixIn(object):
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1513
def sub_process_main(self, request, address):
1514
try:
1515
self.finish_request(request, address)
1516
except:
1517
self.handle_error(request, address)
1518
self.close_request(request)
1519
1520
def process_request(self, request, address):
1521
"""Start a new process to process the request."""
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1523
args = (request,
1524
address))
1525
proc.start()
1526
return proc
1527
1528
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1530
""" adds a pipe to the MixIn """
1531
def process_request(self, request, client_address):
1532
"""Overrides and wraps the original process_request().
1533
1534
This function creates a new pipe in self.pipe
1535
"""
1536
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1537
1538
proc = MultiprocessingMixIn.process_request(self, request,
1539
client_address)
1540
self.child_pipe.close()
1541
self.add_pipe(parent_pipe, proc)
1542
1543
def add_pipe(self, parent_pipe, proc):
1544
"""Dummy function; override as necessary"""
1545
raise NotImplementedError
1546
1547
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1549
socketserver.TCPServer, object):
1550
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1551
445
logger.info(u"TCP connection from: %s",
446
unicode(self.client_address))
447
session = gnutls.connection.ClientSession\
448
(self.request, gnutls.connection.X509Credentials())
449
450
line = self.request.makefile().readline()
451
logger.debug(u"Protocol version: %r", line)
452
try:
453
if int(line.strip().split()[0]) > 1:
454
raise RuntimeError
455
except (ValueError, IndexError, RuntimeError), error:
456
logger.error(u"Unknown protocol version: %s", error)
457
return
458
459
# Note: gnutls.connection.X509Credentials is really a generic
460
# GnuTLS certificate credentials object so long as no X.509
461
# keys are added to it. Therefore, we can use it here despite
462
# using OpenPGP certificates.
463
464
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
465
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
466
# "+DHE-DSS"))
467
priority = "NORMAL" # Fallback default, since this
468
# MUST be set.
469
if self.server.settings["priority"]:
470
priority = self.server.settings["priority"]
471
gnutls.library.functions.gnutls_priority_set_direct\
472
(session._c_object, priority, None);
473
474
try:
475
session.handshake()
476
except gnutls.errors.GNUTLSError, error:
477
logger.warning(u"Handshake failed: %s", error)
478
# Do not run session.bye() here: the session is not
479
# established. Just abandon the request.
480
return
481
try:
482
fpr = fingerprint(peer_certificate(session))
483
except (TypeError, gnutls.errors.GNUTLSError), error:
484
logger.warning(u"Bad certificate: %s", error)
485
session.bye()
486
return
487
logger.debug(u"Fingerprint: %s", fpr)
488
client = None
489
for c in self.server.clients:
490
if c.fingerprint == fpr:
491
client = c
492
break
493
if not client:
494
logger.warning(u"Client not found for fingerprint: %s",
495
fpr)
496
session.bye()
497
return
498
# Have to check if client.still_valid(), since it is possible
499
# that the client timed out while establishing the GnuTLS
500
# session.
501
if not client.still_valid():
502
logger.warning(u"Client %(name)s is invalid",
503
vars(client))
504
session.bye()
505
return
506
sent_size = 0
507
while sent_size < len(client.secret):
508
sent = session.send(client.secret[sent_size:])
509
logger.debug(u"Sent: %d, remaining: %d",
510
sent, len(client.secret)
511
- (sent_size + sent))
512
sent_size += sent
513
session.bye()
514
515
516
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
517
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1552
518
Attributes:
519
settings: Server settings
520
clients: Set() of Client objects
1553
521
enabled: Boolean; whether this server is activated yet
1554
interface: None or a network interface name (string)
1555
use_ipv6: Boolean; to use IPv6 or not
1556
522
"""
1557
def __init__(self, server_address, RequestHandlerClass,
1558
interface=None, use_ipv6=True):
1559
self.interface = interface
1560
if use_ipv6:
1561
self.address_family = socket.AF_INET6
1562
socketserver.TCPServer.__init__(self, server_address,
1563
RequestHandlerClass)
523
address_family = socket.AF_INET6
524
def __init__(self, *args, **kwargs):
525
if "settings" in kwargs:
526
self.settings = kwargs["settings"]
527
del kwargs["settings"]
528
if "clients" in kwargs:
529
self.clients = kwargs["clients"]
530
del kwargs["clients"]
531
self.enabled = False
532
return super(type(self), self).__init__(*args, **kwargs)
1564
533
def server_bind(self):
1565
534
"""This overrides the normal server_bind() function
1566
535
to bind to an interface if one was specified, and also NOT to
1567
536
bind to an address or port if they were not specified."""
1568
if self.interface is not None:
1569
if SO_BINDTODEVICE is None:
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
1572
self.interface)
1573
else:
1574
try:
1575
self.socket.setsockopt(socket.SOL_SOCKET,
1576
SO_BINDTODEVICE,
1577
str(self.interface
1578
+ '\0'))
1579
except socket.error as error:
1580
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
1583
self.interface)
1584
elif error[0] == errno.ENOPROTOOPT:
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
1587
self.interface)
1588
else:
1589
raise
537
if self.settings["interface"]:
538
# 25 is from /usr/include/asm-i486/socket.h
539
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
540
try:
541
self.socket.setsockopt(socket.SOL_SOCKET,
542
SO_BINDTODEVICE,
543
self.settings["interface"])
544
except socket.error, error:
545
if error[0] == errno.EPERM:
546
logger.error(u"No permission to"
547
u" bind to interface %s",
548
self.settings["interface"])
549
else:
550
raise error
1590
551
# Only bind(2) the socket if we really need to.
1591
552
if self.server_address[0] or self.server_address[1]:
1592
553
if not self.server_address[0]:
1593
if self.address_family == socket.AF_INET6:
1594
any_address = "::" # in6addr_any
1595
else:
1596
any_address = socket.INADDR_ANY
1597
self.server_address = (any_address,
554
in6addr_any = "::"
555
self.server_address = (in6addr_any,
1598
556
self.server_address[1])
1599
557
elif not self.server_address[1]:
1600
558
self.server_address = (self.server_address[0],
1601
559
0)
1602
# if self.interface:
560
# if self.settings["interface"]:
1603
561
# self.server_address = (self.server_address[0],
1604
562
# 0, # port
1605
563
# 0, # flowinfo
1606
564
# if_nametoindex
1607
# (self.interface))
1608
return socketserver.TCPServer.server_bind(self)
1609
1610
1611
class MandosServer(IPv6_TCPServer):
1612
"""Mandos server.
1613
1614
Attributes:
1615
clients: set of Client objects
1616
gnutls_priority GnuTLS priority string
1617
use_dbus: Boolean; to emit D-Bus signals or not
1618
1619
Assumes a gobject.MainLoop event loop.
1620
"""
1621
def __init__(self, server_address, RequestHandlerClass,
1622
interface=None, use_ipv6=True, clients=None,
1623
gnutls_priority=None, use_dbus=True):
1624
self.enabled = False
1625
self.clients = clients
1626
if self.clients is None:
1627
self.clients = set()
1628
self.use_dbus = use_dbus
1629
self.gnutls_priority = gnutls_priority
1630
IPv6_TCPServer.__init__(self, server_address,
1631
RequestHandlerClass,
1632
interface = interface,
1633
use_ipv6 = use_ipv6)
565
# (self.settings
566
# ["interface"]))
567
return super(type(self), self).server_bind()
1634
568
def server_activate(self):
1635
569
if self.enabled:
1636
return socketserver.TCPServer.server_activate(self)
1637
570
return super(type(self), self).server_activate()
1638
571
def enable(self):
1639
572
self.enabled = True
1640
1641
def add_pipe(self, parent_pipe, proc):
1642
# Call "handle_ipc" for both data and EOF events
1643
gobject.io_add_watch(parent_pipe.fileno(),
1644
gobject.IO_IN | gobject.IO_HUP,
1645
functools.partial(self.handle_ipc,
1646
parent_pipe =
1647
parent_pipe,
1648
proc = proc))
1649
1650
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1652
condition_names = {
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1655
# blocking).
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1659
# broken, usually for pipes and
1660
# sockets).
1661
}
1662
conditions_string = ' | '.join(name
1663
for cond, name in
1664
condition_names.iteritems()
1665
if cond & condition)
1666
# error, or the other end of multiprocessing.Pipe has closed
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1668
# Wait for other process to exit
1669
proc.join()
1670
return False
1671
1672
# Read a request from the child
1673
request = parent_pipe.recv()
1674
command = request[0]
1675
1676
if command == 'init':
1677
fpr = request[1]
1678
address = request[2]
1679
1680
for c in self.clients:
1681
if c.fingerprint == fpr:
1682
client = c
1683
break
1684
else:
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
1687
if self.use_dbus:
1688
# Emit D-Bus signal
1689
mandos_dbus_service.ClientNotFound(fpr,
1690
address[0])
1691
parent_pipe.send(False)
1692
return False
1693
1694
gobject.io_add_watch(parent_pipe.fileno(),
1695
gobject.IO_IN | gobject.IO_HUP,
1696
functools.partial(self.handle_ipc,
1697
parent_pipe =
1698
parent_pipe,
1699
proc = proc,
1700
client_object =
1701
client))
1702
parent_pipe.send(True)
1703
# remove the old hook in favor of the new above hook on
1704
# same fileno
1705
return False
1706
if command == 'funcall':
1707
funcname = request[1]
1708
args = request[2]
1709
kwargs = request[3]
1710
1711
parent_pipe.send(('data', getattr(client_object,
1712
funcname)(*args,
1713
**kwargs)))
1714
1715
if command == 'getattr':
1716
attrname = request[1]
1717
if callable(client_object.__getattribute__(attrname)):
1718
parent_pipe.send(('function',))
1719
else:
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1722
1723
if command == 'setattr':
1724
attrname = request[1]
1725
value = request[2]
1726
setattr(client_object, attrname, value)
1727
1728
return True
1729
573
1730
574
1731
575
def string_to_delta(interval):
1732
576
"""Parse a string and return a datetime.timedelta
1733
577
1734
578
>>> string_to_delta('7d')
1735
579
datetime.timedelta(7)
1736
580
>>> string_to_delta('60s')
1739
583
datetime.timedelta(0, 3600)
1740
584
>>> string_to_delta('24h')
1741
585
datetime.timedelta(1)
1742
>>> string_to_delta('1w')
586
>>> string_to_delta(u'1w')
1743
587
datetime.timedelta(7)
1744
588
>>> string_to_delta('5m 30s')
1745
589
datetime.timedelta(0, 330)
1747
591
timevalue = datetime.timedelta(0)
1748
592
for s in interval.split():
1749
593
try:
1750
suffix = unicode(s[-1])
1751
value = int(s[:-1])
1752
if suffix == "d":
594
suffix=unicode(s[-1])
595
value=int(s[:-1])
596
if suffix == u"d":
1753
597
delta = datetime.timedelta(value)
1754
elif suffix == "s":
598
elif suffix == u"s":
1755
599
delta = datetime.timedelta(0, value)
1756
elif suffix == "m":
600
elif suffix == u"m":
1757
601
delta = datetime.timedelta(0, 0, 0, 0, value)
1758
elif suffix == "h":
602
elif suffix == u"h":
1759
603
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1760
elif suffix == "w":
604
elif suffix == u"w":
1761
605
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1762
606
else:
1763
raise ValueError("Unknown suffix %r" % suffix)
1764
except (ValueError, IndexError) as e:
1765
raise ValueError(*(e.args))
607
raise ValueError
608
except (ValueError, IndexError):
609
raise ValueError
1766
610
timevalue += delta
1767
611
return timevalue
1768
612
1769
613
614
def server_state_changed(state):
615
"""Derived from the Avahi example code"""
616
if state == avahi.SERVER_COLLISION:
617
logger.error(u"Zeroconf server name collision")
618
service.remove()
619
elif state == avahi.SERVER_RUNNING:
620
service.add()
621
622
623
def entry_group_state_changed(state, error):
624
"""Derived from the Avahi example code"""
625
logger.debug(u"Avahi state change: %i", state)
626
627
if state == avahi.ENTRY_GROUP_ESTABLISHED:
628
logger.debug(u"Zeroconf service established.")
629
elif state == avahi.ENTRY_GROUP_COLLISION:
630
logger.warning(u"Zeroconf service name collision.")
631
service.rename()
632
elif state == avahi.ENTRY_GROUP_FAILURE:
633
logger.critical(u"Avahi: Error in group state changed %s",
634
unicode(error))
635
raise AvahiGroupError("State changed: %s", str(error))
636
1770
637
def if_nametoindex(interface):
1771
"""Call the C function if_nametoindex(), or equivalent
1772
1773
Note: This function cannot accept a unicode string."""
638
"""Call the C function if_nametoindex(), or equivalent"""
1774
639
global if_nametoindex
1775
640
try:
1776
if_nametoindex = (ctypes.cdll.LoadLibrary
1777
(ctypes.util.find_library("c"))
1778
.if_nametoindex)
641
if "ctypes.util" not in sys.modules:
642
import ctypes.util
643
if_nametoindex = ctypes.cdll.LoadLibrary\
644
(ctypes.util.find_library("c")).if_nametoindex
1779
645
except (OSError, AttributeError):
1780
logger.warning("Doing if_nametoindex the hard way")
646
if "struct" not in sys.modules:
647
import struct
648
if "fcntl" not in sys.modules:
649
import fcntl
1781
650
def if_nametoindex(interface):
1782
651
"Get an interface index the hard way, i.e. using fcntl()"
1783
652
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1784
with contextlib.closing(socket.socket()) as s:
1785
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
struct.pack(str("16s16x"),
1787
interface))
1788
interface_index = struct.unpack(str("I"),
1789
ifreq[16:20])[0]
653
s = socket.socket()
654
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
655
struct.pack("16s16x", interface))
656
s.close()
657
interface_index = struct.unpack("I", ifreq[16:20])[0]
1790
658
return interface_index
1791
659
return if_nametoindex(interface)
1792
660
1793
661
1794
662
def daemon(nochdir = False, noclose = False):
1795
663
"""See daemon(3). Standard BSD Unix function.
1796
1797
664
This should really exist as os.daemon, but it doesn't (yet)."""
1798
665
if os.fork():
1799
666
sys.exit()
1807
674
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1808
675
if not stat.S_ISCHR(os.fstat(null).st_mode):
1809
676
raise OSError(errno.ENODEV,
1810
"%s not a character device"
1811
% os.path.devnull)
677
"/dev/null not a character device")
1812
678
os.dup2(null, sys.stdin.fileno())
1813
679
os.dup2(null, sys.stdout.fileno())
1814
680
os.dup2(null, sys.stderr.fileno())
1817
683
1818
684
1819
685
def main():
1820
1821
##################################################################
1822
# Parsing of options, both command line and config file
1823
1824
parser = argparse.ArgumentParser()
1825
parser.add_argument("-v", "--version", action="version",
1826
version = "%%(prog)s %s" % version,
1827
help="show version number and exit")
1828
parser.add_argument("-i", "--interface", metavar="IF",
1829
help="Bind to interface IF")
1830
parser.add_argument("-a", "--address",
1831
help="Address to listen for requests on")
1832
parser.add_argument("-p", "--port", type=int,
1833
help="Port number to receive requests on")
1834
parser.add_argument("--check", action="store_true",
1835
help="Run self-test")
1836
parser.add_argument("--debug", action="store_true",
1837
help="Debug mode; run in foreground and log"
1838
" to terminal")
1839
parser.add_argument("--debuglevel", metavar="LEVEL",
1840
help="Debug level for stdout output")
1841
parser.add_argument("--priority", help="GnuTLS"
1842
" priority string (see GnuTLS documentation)")
1843
parser.add_argument("--servicename",
1844
metavar="NAME", help="Zeroconf service name")
1845
parser.add_argument("--configdir",
1846
default="/etc/mandos", metavar="DIR",
1847
help="Directory to search for configuration"
1848
" files")
1849
parser.add_argument("--no-dbus", action="store_false",
1850
dest="use_dbus", help="Do not provide D-Bus"
1851
" system bus interface")
1852
parser.add_argument("--no-ipv6", action="store_false",
1853
dest="use_ipv6", help="Do not use IPv6")
1854
options = parser.parse_args()
686
global main_loop_started
687
main_loop_started = False
688
689
parser = OptionParser(version = "%%prog %s" % version)
690
parser.add_option("-i", "--interface", type="string",
691
metavar="IF", help="Bind to interface IF")
692
parser.add_option("-a", "--address", type="string",
693
help="Address to listen for requests on")
694
parser.add_option("-p", "--port", type="int",
695
help="Port number to receive requests on")
696
parser.add_option("--check", action="store_true", default=False,
697
help="Run self-test")
698
parser.add_option("--debug", action="store_true",
699
help="Debug mode; run in foreground and log to"
700
" terminal")
701
parser.add_option("--priority", type="string", help="GnuTLS"
702
" priority string (see GnuTLS documentation)")
703
parser.add_option("--servicename", type="string", metavar="NAME",
704
help="Zeroconf service name")
705
parser.add_option("--configdir", type="string",
706
default="/etc/mandos", metavar="DIR",
707
help="Directory to search for configuration"
708
" files")
709
(options, args) = parser.parse_args()
1855
710
1856
711
if options.check:
1857
712
import doctest
1866
721
"priority":
1867
722
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
723
"servicename": "Mandos",
1869
"use_dbus": "True",
1870
"use_ipv6": "True",
1871
"debuglevel": "",
1872
724
}
1873
725
1874
726
# Parse config file for server-global settings
1875
server_config = configparser.SafeConfigParser(server_defaults)
727
server_config = ConfigParser.SafeConfigParser(server_defaults)
1876
728
del server_defaults
1877
server_config.read(os.path.join(options.configdir,
1878
"mandos.conf"))
729
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1879
730
# Convert the SafeConfigParser object to a dict
1880
731
server_settings = server_config.defaults()
1881
# Use the appropriate methods on the non-string config options
1882
for option in ("debug", "use_dbus", "use_ipv6"):
1883
server_settings[option] = server_config.getboolean("DEFAULT",
1884
option)
1885
if server_settings["port"]:
1886
server_settings["port"] = server_config.getint("DEFAULT",
1887
"port")
732
# Use getboolean on the boolean config option
733
server_settings["debug"] = server_config.getboolean\
734
("DEFAULT", "debug")
1888
735
del server_config
1889
736
1890
737
# Override the settings from the config file with command line
1891
738
# options, if set.
1892
739
for option in ("interface", "address", "port", "debug",
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
740
"priority", "servicename", "configdir"):
1895
741
value = getattr(options, option)
1896
742
if value is not None:
1897
743
server_settings[option] = value
1898
744
del options
1899
# Force all strings to be unicode
1900
for option in server_settings.keys():
1901
if type(server_settings[option]) is str:
1902
server_settings[option] = unicode(server_settings[option])
1903
745
# Now we have our good server settings in "server_settings"
1904
746
1905
##################################################################
1906
1907
# For convenience
1908
747
debug = server_settings["debug"]
1909
debuglevel = server_settings["debuglevel"]
1910
use_dbus = server_settings["use_dbus"]
1911
use_ipv6 = server_settings["use_ipv6"]
748
749
if not debug:
750
syslogger.setLevel(logging.WARNING)
751
console.setLevel(logging.WARNING)
1912
752
1913
753
if server_settings["servicename"] != "Mandos":
1914
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
754
syslogger.setFormatter(logging.Formatter\
755
('Mandos (%s): %%(levelname)s:'
756
' %%(message)s'
1917
757
% server_settings["servicename"]))
1918
758
1919
759
# Parse config file with clients
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1922
"interval": "2m",
1923
"checker": "fping -q -- %%(host)s",
760
client_defaults = { "timeout": "1h",
761
"interval": "5m",
762
"checker": "fping -q -- %(host)s",
1924
763
"host": "",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1927
764
}
1928
client_config = configparser.SafeConfigParser(client_defaults)
765
client_config = ConfigParser.SafeConfigParser(client_defaults)
1929
766
client_config.read(os.path.join(server_settings["configdir"],
1930
767
"clients.conf"))
1931
768
1932
global mandos_dbus_service
1933
mandos_dbus_service = None
1934
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1937
ClientHandler,
1938
interface=(server_settings["interface"]
1939
or None),
1940
use_ipv6=use_ipv6,
1941
gnutls_priority=
1942
server_settings["priority"],
1943
use_dbus=use_dbus)
1944
if not debug:
1945
pidfilename = "/var/run/mandos.pid"
1946
try:
1947
pidfile = open(pidfilename, "w")
1948
except IOError:
1949
logger.error("Could not open file %r", pidfilename)
1950
1951
try:
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1954
except KeyError:
1955
try:
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
1958
except KeyError:
1959
try:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1962
except KeyError:
1963
uid = 65534
1964
gid = 65534
1965
try:
769
clients = Set()
770
tcp_server = IPv6_TCPServer((server_settings["address"],
771
server_settings["port"]),
772
tcp_handler,
773
settings=server_settings,
774
clients=clients)
775
pidfilename = "/var/run/mandos.pid"
776
try:
777
pidfile = open(pidfilename, "w")
778
except IOError, error:
779
logger.error("Could not open file %r", pidfilename)
780
781
uid = 65534
782
gid = 65534
783
try:
784
uid = pwd.getpwnam("mandos").pw_uid
785
except KeyError:
786
try:
787
uid = pwd.getpwnam("nobody").pw_uid
788
except KeyError:
789
pass
790
try:
791
gid = pwd.getpwnam("mandos").pw_gid
792
except KeyError:
793
try:
794
gid = pwd.getpwnam("nogroup").pw_gid
795
except KeyError:
796
pass
797
try:
798
os.setuid(uid)
1966
799
os.setgid(gid)
1967
os.setuid(uid)
1968
except OSError as error:
800
except OSError, error:
1969
801
if error[0] != errno.EPERM:
1970
802
raise error
1971
803
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1975
if debuglevel:
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
804
global service
805
service = AvahiService(name = server_settings["servicename"],
806
type = "_mandos._tcp", );
807
if server_settings["interface"]:
808
service.interface = if_nametoindex\
809
(server_settings["interface"])
810
811
global main_loop
812
global bus
813
global server
814
# From the Avahi example code
815
DBusGMainLoop(set_as_default=True )
816
main_loop = gobject.MainLoop()
817
bus = dbus.SystemBus()
818
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
819
avahi.DBUS_PATH_SERVER),
820
avahi.DBUS_INTERFACE_SERVER)
821
# End of Avahi example code
822
823
def remove_from_clients(client):
824
clients.remove(client)
825
if not clients:
826
logger.critical(u"No clients left, exiting")
827
sys.exit()
828
829
clients.update(Set(Client(name = section,
830
stop_hook = remove_from_clients,
831
config
832
= dict(client_config.items(section)))
833
for section in client_config.sections()))
834
if not clients:
835
logger.critical(u"No clients defined")
836
sys.exit(1)
1979
837
1980
838
if debug:
1981
# Enable all possible GnuTLS debugging
1982
1983
# "Use a log level over 10 to enable all debugging options."
1984
# - GnuTLS manual
1985
gnutls.library.functions.gnutls_global_set_log_level(11)
1986
1987
@gnutls.library.types.gnutls_log_func
1988
def debug_gnutls(level, string):
1989
logger.debug("GnuTLS: %s", string[:-1])
1990
1991
(gnutls.library.functions
1992
.gnutls_global_set_log_function(debug_gnutls))
1993
1994
839
# Redirect stdin so all checkers get /dev/null
1995
840
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1996
841
os.dup2(null, sys.stdin.fileno())
1999
844
else:
2000
845
# No console logging
2001
846
logger.removeHandler(console)
2002
2003
# Need to fork before connecting to D-Bus
2004
if not debug:
2005
847
# Close all input and output, do double fork, etc.
2006
848
daemon()
2007
849
2008
global main_loop
2009
# From the Avahi example code
2010
DBusGMainLoop(set_as_default=True )
2011
main_loop = gobject.MainLoop()
2012
bus = dbus.SystemBus()
2013
# End of Avahi example code
2014
if use_dbus:
2015
try:
2016
bus_name = dbus.service.BusName("se.recompile.Mandos",
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2020
do_not_queue=True))
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
2023
use_dbus = False
2024
server_settings["use_dbus"] = False
2025
tcp_server.use_dbus = False
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
2029
protocol = protocol, bus = bus)
2030
if server_settings["interface"]:
2031
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
2033
2034
global multiprocessing_manager
2035
multiprocessing_manager = multiprocessing.Manager()
2036
2037
client_class = Client
2038
if use_dbus:
2039
client_class = functools.partial(ClientDBusTransitional,
2040
bus = bus)
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2046
}
2047
for name, value in config.items(section):
2048
try:
2049
yield (name, special_settings[name]())
2050
except KeyError:
2051
yield (name, value)
2052
2053
tcp_server.clients.update(set(
2054
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
2057
for section in client_config.sections()))
2058
if not tcp_server.clients:
2059
logger.warning("No clients defined")
850
try:
851
pid = os.getpid()
852
pidfile.write(str(pid) + "\n")
853
pidfile.close()
854
del pidfile
855
except IOError, err:
856
logger.error(u"Could not write to file %r with PID %d",
857
pidfilename, pid)
858
except NameError:
859
# "pidfile" was never created
860
pass
861
del pidfilename
862
863
def cleanup():
864
"Cleanup function; run on exit"
865
global group
866
# From the Avahi example code
867
if not group is None:
868
group.Free()
869
group = None
870
# End of Avahi example code
2060
871
872
while clients:
873
client = clients.pop()
874
client.stop_hook = None
875
client.stop()
876
877
atexit.register(cleanup)
878
2061
879
if not debug:
2062
try:
2063
with pidfile:
2064
pid = os.getpid()
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
del pidfile
2067
except IOError:
2068
logger.error("Could not write to file %r with PID %d",
2069
pidfilename, pid)
2070
except NameError:
2071
# "pidfile" was never created
2072
pass
2073
del pidfilename
2074
2075
880
signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
2077
881
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
882
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2079
883
2080
if use_dbus:
2081
class MandosDBusService(dbus.service.Object):
2082
"""A D-Bus proxy object"""
2083
def __init__(self):
2084
dbus.service.Object.__init__(self, bus, "/")
2085
_interface = "se.recompile.Mandos"
2086
2087
@dbus.service.signal(_interface, signature="o")
2088
def ClientAdded(self, objpath):
2089
"D-Bus signal"
2090
pass
2091
2092
@dbus.service.signal(_interface, signature="ss")
2093
def ClientNotFound(self, fingerprint, address):
2094
"D-Bus signal"
2095
pass
2096
2097
@dbus.service.signal(_interface, signature="os")
2098
def ClientRemoved(self, objpath, name):
2099
"D-Bus signal"
2100
pass
2101
2102
@dbus.service.method(_interface, out_signature="ao")
2103
def GetAllClients(self):
2104
"D-Bus method"
2105
return dbus.Array(c.dbus_object_path
2106
for c in tcp_server.clients)
2107
2108
@dbus.service.method(_interface,
2109
out_signature="a{oa{sv}}")
2110
def GetAllClientsWithProperties(self):
2111
"D-Bus method"
2112
return dbus.Dictionary(
2113
((c.dbus_object_path, c.GetAll(""))
2114
for c in tcp_server.clients),
2115
signature="oa{sv}")
2116
2117
@dbus.service.method(_interface, in_signature="o")
2118
def RemoveClient(self, object_path):
2119
"D-Bus method"
2120
for c in tcp_server.clients:
2121
if c.dbus_object_path == object_path:
2122
tcp_server.clients.remove(c)
2123
c.remove_from_connection()
2124
# Don't signal anything except ClientRemoved
2125
c.disable(quiet=True)
2126
# Emit D-Bus signal
2127
self.ClientRemoved(object_path, c.name)
2128
return
2129
raise KeyError(object_path)
2130
2131
del _interface
2132
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2136
2137
def cleanup():
2138
"Cleanup function; run on exit"
2139
service.cleanup()
2140
2141
multiprocessing.active_children()
2142
while tcp_server.clients:
2143
client = tcp_server.clients.pop()
2144
if use_dbus:
2145
client.remove_from_connection()
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
2148
client.disable(quiet=True)
2149
if use_dbus:
2150
# Emit D-Bus signal
2151
mandos_dbus_service.ClientRemoved(client
2152
.dbus_object_path,
2153
client.name)
2154
2155
atexit.register(cleanup)
2156
2157
for client in tcp_server.clients:
2158
if use_dbus:
2159
# Emit D-Bus signal
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2161
client.enable()
884
for client in clients:
885
client.start()
2162
886
2163
887
tcp_server.enable()
2164
888
tcp_server.server_activate()
2165
889
2166
890
# Find out what port we got
2167
891
service.port = tcp_server.socket.getsockname()[1]
2168
if use_ipv6:
2169
logger.info("Now listening on address %r, port %d,"
2170
" flowinfo %d, scope_id %d"
2171
% tcp_server.socket.getsockname())
2172
else: # IPv4
2173
logger.info("Now listening on address %r, port %d"
2174
% tcp_server.socket.getsockname())
892
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
893
u" scope_id %d" % tcp_server.socket.getsockname())
2175
894
2176
895
#service.interface = tcp_server.socket.getsockname()[3]
2177
896
2178
897
try:
2179
898
# From the Avahi example code
899
server.connect_to_signal("StateChanged", server_state_changed)
2180
900
try:
2181
service.activate()
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2184
cleanup()
901
server_state_changed(server.GetState())
902
except dbus.exceptions.DBusException, error:
903
logger.critical(u"DBusException: %s", error)
2185
904
sys.exit(1)
2186
905
# End of Avahi example code
2187
906
2188
907
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2189
908
lambda *args, **kwargs:
2190
(tcp_server.handle_request
2191
(*args[2:], **kwargs) or True))
909
tcp_server.handle_request\
910
(*args[2:], **kwargs) or True)
2192
911
2193
logger.debug("Starting main loop")
912
logger.debug(u"Starting main loop")
913
main_loop_started = True
2194
914
main_loop.run()
2195
except AvahiError as error:
2196
logger.critical("AvahiError: %s", error)
2197
cleanup()
915
except AvahiError, error:
916
logger.critical(u"AvahiError: %s" + unicode(error))
2198
917
sys.exit(1)
2199
918
except KeyboardInterrupt:
2200
919
if debug:
2201
print("", file=sys.stderr)
2202
logger.debug("Server received KeyboardInterrupt")
2203
logger.debug("Server exiting")
2204
# Must run before the D-Bus bus name gets deregistered
2205
cleanup()
2206
920
print
2207
921
2208
922
if __name__ == '__main__':
2209
923
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0