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- Committer: Teddy Hogeborn
- Date: 2016-02-21 14:24:01 UTC
- Revision ID: teddy@recompile.se-20160221142401-j7glu6a2hg604d1e
Use AddressSanitizer and UndefinedBehaviorSanitizer.
* Makefile (SANITIZE): New; set to all sanitizing options depending on
GCC version.
(CFLAGS): Added "$(SANITIZE)".
* Makefile (SANITIZE): New; set to all sanitizing options depending on
GCC version.
(CFLAGS): Added "$(SANITIZE)".
- files added:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
43
import socket
38
import optparse
44
import argparse
39
45
import datetime
40
46
import errno
41
import gnutls.crypto
42
47
import gnutls.connection
43
48
import gnutls.errors
44
49
import gnutls.library.functions
45
50
import gnutls.library.constants
46
51
import gnutls.library.types
47
import ConfigParser as configparser
52
try:
53
import ConfigParser as configparser
54
except ImportError:
55
import configparser
48
56
import sys
49
57
import re
50
58
import os
55
63
import logging
56
64
import logging.handlers
57
65
import pwd
58
from contextlib import closing
66
import contextlib
59
67
import struct
60
68
import fcntl
61
69
import functools
70
try:
71
import cPickle as pickle
72
except ImportError:
73
import pickle
74
import multiprocessing
75
import types
76
import binascii
77
import tempfile
78
import itertools
79
import collections
80
import codecs
62
81
63
82
import dbus
64
83
import dbus.service
65
import gobject
84
try:
85
import gobject
86
except ImportError:
87
from gi.repository import GObject as gobject
66
88
import avahi
67
89
from dbus.mainloop.glib import DBusGMainLoop
68
90
import ctypes
69
91
import ctypes.util
92
import xml.dom.minidom
93
import inspect
70
94
71
95
try:
72
96
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
76
100
except ImportError:
77
101
SO_BINDTODEVICE = None
78
102
79
80
version = "1.0.8"
81
82
logger = logging.Logger(u'mandos')
83
syslogger = (logging.handlers.SysLogHandler
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
89
logger.addHandler(syslogger)
90
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
95
logger.addHandler(console)
103
if sys.version_info.major == 2:
104
str = unicode
105
106
version = "1.7.1"
107
stored_state_file = "clients.pickle"
108
109
logger = logging.getLogger()
110
syslogger = None
111
112
try:
113
if_nametoindex = ctypes.cdll.LoadLibrary(
114
ctypes.util.find_library("c")).if_nametoindex
115
except (OSError, AttributeError):
116
117
def if_nametoindex(interface):
118
"Get an interface index the hard way, i.e. using fcntl()"
119
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
120
with contextlib.closing(socket.socket()) as s:
121
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
122
struct.pack(b"16s16x", interface))
123
interface_index = struct.unpack("I", ifreq[16:20])[0]
124
return interface_index
125
126
127
def initlogger(debug, level=logging.WARNING):
128
"""init logger and add loglevel"""
129
130
global syslogger
131
syslogger = (logging.handlers.SysLogHandler(
132
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
133
address = "/dev/log"))
134
syslogger.setFormatter(logging.Formatter
135
('Mandos [%(process)d]: %(levelname)s:'
136
' %(message)s'))
137
logger.addHandler(syslogger)
138
139
if debug:
140
console = logging.StreamHandler()
141
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
142
' [%(process)d]:'
143
' %(levelname)s:'
144
' %(message)s'))
145
logger.addHandler(console)
146
logger.setLevel(level)
147
148
149
class PGPError(Exception):
150
"""Exception if encryption/decryption fails"""
151
pass
152
153
154
class PGPEngine(object):
155
"""A simple class for OpenPGP symmetric encryption & decryption"""
156
157
def __init__(self):
158
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
159
self.gnupgargs = ['--batch',
160
'--home', self.tempdir,
161
'--force-mdc',
162
'--quiet',
163
'--no-use-agent']
164
165
def __enter__(self):
166
return self
167
168
def __exit__(self, exc_type, exc_value, traceback):
169
self._cleanup()
170
return False
171
172
def __del__(self):
173
self._cleanup()
174
175
def _cleanup(self):
176
if self.tempdir is not None:
177
# Delete contents of tempdir
178
for root, dirs, files in os.walk(self.tempdir,
179
topdown = False):
180
for filename in files:
181
os.remove(os.path.join(root, filename))
182
for dirname in dirs:
183
os.rmdir(os.path.join(root, dirname))
184
# Remove tempdir
185
os.rmdir(self.tempdir)
186
self.tempdir = None
187
188
def password_encode(self, password):
189
# Passphrase can not be empty and can not contain newlines or
190
# NUL bytes. So we prefix it and hex encode it.
191
encoded = b"mandos" + binascii.hexlify(password)
192
if len(encoded) > 2048:
193
# GnuPG can't handle long passwords, so encode differently
194
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
195
.replace(b"\n", b"\\n")
196
.replace(b"\0", b"\\x00"))
197
return encoded
198
199
def encrypt(self, data, password):
200
passphrase = self.password_encode(password)
201
with tempfile.NamedTemporaryFile(
202
dir=self.tempdir) as passfile:
203
passfile.write(passphrase)
204
passfile.flush()
205
proc = subprocess.Popen(['gpg', '--symmetric',
206
'--passphrase-file',
207
passfile.name]
208
+ self.gnupgargs,
209
stdin = subprocess.PIPE,
210
stdout = subprocess.PIPE,
211
stderr = subprocess.PIPE)
212
ciphertext, err = proc.communicate(input = data)
213
if proc.returncode != 0:
214
raise PGPError(err)
215
return ciphertext
216
217
def decrypt(self, data, password):
218
passphrase = self.password_encode(password)
219
with tempfile.NamedTemporaryFile(
220
dir = self.tempdir) as passfile:
221
passfile.write(passphrase)
222
passfile.flush()
223
proc = subprocess.Popen(['gpg', '--decrypt',
224
'--passphrase-file',
225
passfile.name]
226
+ self.gnupgargs,
227
stdin = subprocess.PIPE,
228
stdout = subprocess.PIPE,
229
stderr = subprocess.PIPE)
230
decrypted_plaintext, err = proc.communicate(input = data)
231
if proc.returncode != 0:
232
raise PGPError(err)
233
return decrypted_plaintext
234
96
235
97
236
class AvahiError(Exception):
98
237
def __init__(self, value, *args, **kwargs):
99
238
self.value = value
100
super(AvahiError, self).__init__(value, *args, **kwargs)
101
def __unicode__(self):
102
return unicode(repr(self.value))
239
return super(AvahiError, self).__init__(value, *args,
240
**kwargs)
241
103
242
104
243
class AvahiServiceError(AvahiError):
105
244
pass
106
245
246
107
247
class AvahiGroupError(AvahiError):
108
248
pass
109
249
114
254
Attributes:
115
255
interface: integer; avahi.IF_UNSPEC or an interface index.
116
256
Used to optionally bind to the specified interface.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
119
See <http://www.dns-sd.org/ServiceTypes.html>
257
name: string; Example: 'Mandos'
258
type: string; Example: '_mandos._tcp'.
259
See <https://www.iana.org/assignments/service-names-port-numbers>
120
260
port: integer; what port to announce
121
261
TXT: list of strings; TXT record for the service
122
262
domain: string; Domain to publish on, default to .local if empty.
128
268
server: D-Bus Server
129
269
bus: dbus.SystemBus()
130
270
"""
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
132
servicetype = None, port = None, TXT = None,
133
domain = u"", host = u"", max_renames = 32768,
134
protocol = avahi.PROTO_UNSPEC, bus = None):
271
272
def __init__(self,
273
interface = avahi.IF_UNSPEC,
274
name = None,
275
servicetype = None,
276
port = None,
277
TXT = None,
278
domain = "",
279
host = "",
280
max_renames = 32768,
281
protocol = avahi.PROTO_UNSPEC,
282
bus = None):
135
283
self.interface = interface
136
284
self.name = name
137
285
self.type = servicetype
145
293
self.group = None # our entry group
146
294
self.server = None
147
295
self.bus = bus
148
def rename(self):
296
self.entry_group_state_changed_match = None
297
298
def rename(self, remove=True):
149
299
"""Derived from the Avahi example code"""
150
300
if self.rename_count >= self.max_renames:
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
301
logger.critical("No suitable Zeroconf service name found"
302
" after %i retries, exiting.",
153
303
self.rename_count)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
156
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
158
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
162
self.remove()
163
self.add()
304
raise AvahiServiceError("Too many renames")
305
self.name = str(
306
self.server.GetAlternativeServiceName(self.name))
164
307
self.rename_count += 1
308
logger.info("Changing Zeroconf service name to %r ...",
309
self.name)
310
if remove:
311
self.remove()
312
try:
313
self.add()
314
except dbus.exceptions.DBusException as error:
315
if (error.get_dbus_name()
316
== "org.freedesktop.Avahi.CollisionError"):
317
logger.info("Local Zeroconf service name collision.")
318
return self.rename(remove=False)
319
else:
320
logger.critical("D-Bus Exception", exc_info=error)
321
self.cleanup()
322
os._exit(1)
323
165
324
def remove(self):
166
325
"""Derived from the Avahi example code"""
326
if self.entry_group_state_changed_match is not None:
327
self.entry_group_state_changed_match.remove()
328
self.entry_group_state_changed_match = None
167
329
if self.group is not None:
168
330
self.group.Reset()
331
169
332
def add(self):
170
333
"""Derived from the Avahi example code"""
334
self.remove()
171
335
if self.group is None:
172
336
self.group = dbus.Interface(
173
337
self.bus.get_object(avahi.DBUS_NAME,
174
338
self.server.EntryGroupNew()),
175
339
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
340
self.entry_group_state_changed_match = (
341
self.group.connect_to_signal(
342
'StateChanged', self.entry_group_state_changed))
343
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
179
344
self.name, self.type)
180
345
self.group.AddService(
181
346
self.interface,
186
351
dbus.UInt16(self.port),
187
352
avahi.string_array_to_txt_array(self.TXT))
188
353
self.group.Commit()
354
189
355
def entry_group_state_changed(self, state, error):
190
356
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
357
logger.debug("Avahi entry group state change: %i", state)
192
358
193
359
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
360
logger.debug("Zeroconf service established.")
195
361
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
362
logger.info("Zeroconf service name collision.")
197
363
self.rename()
198
364
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
200
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
365
logger.critical("Avahi: Error in group state changed %s",
366
str(error))
367
raise AvahiGroupError("State changed: {!s}".format(error))
368
203
369
def cleanup(self):
204
370
"""Derived from the Avahi example code"""
205
371
if self.group is not None:
206
self.group.Free()
372
try:
373
self.group.Free()
374
except (dbus.exceptions.UnknownMethodException,
375
dbus.exceptions.DBusException):
376
pass
207
377
self.group = None
208
def server_state_changed(self, state):
378
self.remove()
379
380
def server_state_changed(self, state, error=None):
209
381
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
382
logger.debug("Avahi server state change: %i", state)
383
bad_states = {
384
avahi.SERVER_INVALID: "Zeroconf server invalid",
385
avahi.SERVER_REGISTERING: None,
386
avahi.SERVER_COLLISION: "Zeroconf server name collision",
387
avahi.SERVER_FAILURE: "Zeroconf server failure",
388
}
389
if state in bad_states:
390
if bad_states[state] is not None:
391
if error is None:
392
logger.error(bad_states[state])
393
else:
394
logger.error(bad_states[state] + ": %r", error)
395
self.cleanup()
213
396
elif state == avahi.SERVER_RUNNING:
214
self.add()
397
try:
398
self.add()
399
except dbus.exceptions.DBusException as error:
400
if (error.get_dbus_name()
401
== "org.freedesktop.Avahi.CollisionError"):
402
logger.info("Local Zeroconf service name"
403
" collision.")
404
return self.rename(remove=False)
405
else:
406
logger.critical("D-Bus Exception", exc_info=error)
407
self.cleanup()
408
os._exit(1)
409
else:
410
if error is None:
411
logger.debug("Unknown state: %r", state)
412
else:
413
logger.debug("Unknown state: %r: %r", state, error)
414
215
415
def activate(self):
216
416
"""Derived from the Avahi example code"""
217
417
if self.server is None:
218
418
self.server = dbus.Interface(
219
419
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
420
avahi.DBUS_PATH_SERVER,
421
follow_name_owner_changes=True),
221
422
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
423
self.server.connect_to_signal("StateChanged",
424
self.server_state_changed)
224
425
self.server_state_changed(self.server.GetState())
225
426
226
427
428
class AvahiServiceToSyslog(AvahiService):
429
def rename(self, *args, **kwargs):
430
"""Add the new name to the syslog messages"""
431
ret = AvahiService.rename(self, *args, **kwargs)
432
syslogger.setFormatter(logging.Formatter(
433
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
434
.format(self.name)))
435
return ret
436
437
def call_pipe(connection, # : multiprocessing.Connection
438
func, *args, **kwargs):
439
"""This function is meant to be called by multiprocessing.Process
440
441
This function runs func(*args, **kwargs), and writes the resulting
442
return value on the provided multiprocessing.Connection.
443
"""
444
connection.send(func(*args, **kwargs))
445
connection.close()
446
227
447
class Client(object):
228
448
"""A representation of a client host served by this server.
229
449
230
450
Attributes:
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
451
approved: bool(); 'None' if not yet approved/disapproved
452
approval_delay: datetime.timedelta(); Time to wait for approval
453
approval_duration: datetime.timedelta(); Duration of one approval
245
454
checker: subprocess.Popen(); a running checker process used
246
455
to see if the client lives.
247
456
'None' if no process is running.
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
457
checker_callback_tag: a gobject event source tag, or None
458
checker_command: string; External command which is run to check
459
if client lives. %() expansions are done at
253
460
runtime with vars(self) as dict, so that for
254
461
instance %(name)s can be used in the command.
462
checker_initiator_tag: a gobject event source tag, or None
463
created: datetime.datetime(); (UTC) object creation
464
client_structure: Object describing what attributes a client has
465
and is used for storing the client at exit
255
466
current_checker_command: string; current running checker_command
467
disable_initiator_tag: a gobject event source tag, or None
468
enabled: bool()
469
fingerprint: string (40 or 32 hexadecimal digits); used to
470
uniquely identify the client
471
host: string; available for use by the checker command
472
interval: datetime.timedelta(); How often to start a new checker
473
last_approval_request: datetime.datetime(); (UTC) or None
474
last_checked_ok: datetime.datetime(); (UTC) or None
475
last_checker_status: integer between 0 and 255 reflecting exit
476
status of last checker. -1 reflects crashed
477
checker, -2 means no checker completed yet.
478
last_checker_signal: The signal which killed the last checker, if
479
last_checker_status is -1
480
last_enabled: datetime.datetime(); (UTC) or None
481
name: string; from the config file, used in log messages and
482
D-Bus identifiers
483
secret: bytestring; sent verbatim (over TLS) to client
484
timeout: datetime.timedelta(); How long from last_checked_ok
485
until this client is disabled
486
extended_timeout: extra long timeout when secret has been sent
487
runtime_expansions: Allowed attributes for runtime expansion.
488
expires: datetime.datetime(); time (UTC) when a client will be
489
disabled, or None
490
server_settings: The server_settings dict from main()
256
491
"""
257
492
493
runtime_expansions = ("approval_delay", "approval_duration",
494
"created", "enabled", "expires",
495
"fingerprint", "host", "interval",
496
"last_approval_request", "last_checked_ok",
497
"last_enabled", "name", "timeout")
498
client_defaults = {
499
"timeout": "PT5M",
500
"extended_timeout": "PT15M",
501
"interval": "PT2M",
502
"checker": "fping -q -- %%(host)s",
503
"host": "",
504
"approval_delay": "PT0S",
505
"approval_duration": "PT1S",
506
"approved_by_default": "True",
507
"enabled": "True",
508
}
509
258
510
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
264
265
def timeout_milliseconds(self):
266
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
268
269
def interval_milliseconds(self):
270
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
276
attribute."""
511
def config_parser(config):
512
"""Construct a new dict of client settings of this form:
513
{ client_name: {setting_name: value, ...}, ...}
514
with exceptions for any special settings as defined above.
515
NOTE: Must be a pure function. Must return the same result
516
value given the same arguments.
517
"""
518
settings = {}
519
for client_name in config.sections():
520
section = dict(config.items(client_name))
521
client = settings[client_name] = {}
522
523
client["host"] = section["host"]
524
# Reformat values from string types to Python types
525
client["approved_by_default"] = config.getboolean(
526
client_name, "approved_by_default")
527
client["enabled"] = config.getboolean(client_name,
528
"enabled")
529
530
# Uppercase and remove spaces from fingerprint for later
531
# comparison purposes with return value from the
532
# fingerprint() function
533
client["fingerprint"] = (section["fingerprint"].upper()
534
.replace(" ", ""))
535
if "secret" in section:
536
client["secret"] = section["secret"].decode("base64")
537
elif "secfile" in section:
538
with open(os.path.expanduser(os.path.expandvars
539
(section["secfile"])),
540
"rb") as secfile:
541
client["secret"] = secfile.read()
542
else:
543
raise TypeError("No secret or secfile for section {}"
544
.format(section))
545
client["timeout"] = string_to_delta(section["timeout"])
546
client["extended_timeout"] = string_to_delta(
547
section["extended_timeout"])
548
client["interval"] = string_to_delta(section["interval"])
549
client["approval_delay"] = string_to_delta(
550
section["approval_delay"])
551
client["approval_duration"] = string_to_delta(
552
section["approval_duration"])
553
client["checker_command"] = section["checker"]
554
client["last_approval_request"] = None
555
client["last_checked_ok"] = None
556
client["last_checker_status"] = -2
557
558
return settings
559
560
def __init__(self, settings, name = None, server_settings=None):
277
561
self.name = name
278
if config is None:
279
config = {}
280
logger.debug(u"Creating client %r", self.name)
281
# Uppercase and remove spaces from fingerprint for later
282
# comparison purposes with return value from the fingerprint()
283
# function
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
562
if server_settings is None:
563
server_settings = {}
564
self.server_settings = server_settings
565
# adding all client settings
566
for setting, value in settings.items():
567
setattr(self, setting, value)
568
569
if self.enabled:
570
if not hasattr(self, "last_enabled"):
571
self.last_enabled = datetime.datetime.utcnow()
572
if not hasattr(self, "expires"):
573
self.expires = (datetime.datetime.utcnow()
574
+ self.timeout)
294
575
else:
295
raise TypeError(u"No secret or secfile for client %s"
296
% self.name)
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
299
self.enabled = False
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
576
self.last_enabled = None
577
self.expires = None
578
579
logger.debug("Creating client %r", self.name)
580
logger.debug(" Fingerprint: %s", self.fingerprint)
581
self.created = settings.get("created",
582
datetime.datetime.utcnow())
583
584
# attributes specific for this server instance
305
585
self.checker = None
306
586
self.checker_initiator_tag = None
307
587
self.disable_initiator_tag = None
308
588
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
310
589
self.current_checker_command = None
311
self.last_connect = None
590
self.approved = None
591
self.approvals_pending = 0
592
self.changedstate = multiprocessing_manager.Condition(
593
multiprocessing_manager.Lock())
594
self.client_structure = [attr
595
for attr in self.__dict__.iterkeys()
596
if not attr.startswith("_")]
597
self.client_structure.append("client_structure")
598
599
for name, t in inspect.getmembers(
600
type(self), lambda obj: isinstance(obj, property)):
601
if not name.startswith("_"):
602
self.client_structure.append(name)
603
604
# Send notice to process children that client state has changed
605
def send_changedstate(self):
606
with self.changedstate:
607
self.changedstate.notify_all()
312
608
313
609
def enable(self):
314
610
"""Start this client's checker and timeout hooks"""
315
if getattr(self, u"enabled", False):
611
if getattr(self, "enabled", False):
316
612
# Already enabled
317
613
return
614
self.expires = datetime.datetime.utcnow() + self.timeout
615
self.enabled = True
318
616
self.last_enabled = datetime.datetime.utcnow()
319
# Schedule a new checker to be started an 'interval' from now,
320
# and every interval from then on.
321
self.checker_initiator_tag = (gobject.timeout_add
322
(self.interval_milliseconds(),
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
326
# Schedule a disable() when 'timeout' has passed
327
self.disable_initiator_tag = (gobject.timeout_add
328
(self.timeout_milliseconds(),
329
self.disable))
330
self.enabled = True
617
self.init_checker()
618
self.send_changedstate()
331
619
332
def disable(self):
620
def disable(self, quiet=True):
333
621
"""Disable this client."""
334
622
if not getattr(self, "enabled", False):
335
623
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
624
if not quiet:
625
logger.info("Disabling client %s", self.name)
626
if getattr(self, "disable_initiator_tag", None) is not None:
338
627
gobject.source_remove(self.disable_initiator_tag)
339
628
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
629
self.expires = None
630
if getattr(self, "checker_initiator_tag", None) is not None:
341
631
gobject.source_remove(self.checker_initiator_tag)
342
632
self.checker_initiator_tag = None
343
633
self.stop_checker()
344
if self.disable_hook:
345
self.disable_hook(self)
346
634
self.enabled = False
635
if not quiet:
636
self.send_changedstate()
347
637
# Do not run this again if called by a gobject.timeout_add
348
638
return False
349
639
350
640
def __del__(self):
351
self.disable_hook = None
352
641
self.disable()
353
642
354
def checker_callback(self, pid, condition, command):
643
def init_checker(self):
644
# Schedule a new checker to be started an 'interval' from now,
645
# and every interval from then on.
646
if self.checker_initiator_tag is not None:
647
gobject.source_remove(self.checker_initiator_tag)
648
self.checker_initiator_tag = gobject.timeout_add(
649
int(self.interval.total_seconds() * 1000),
650
self.start_checker)
651
# Schedule a disable() when 'timeout' has passed
652
if self.disable_initiator_tag is not None:
653
gobject.source_remove(self.disable_initiator_tag)
654
self.disable_initiator_tag = gobject.timeout_add(
655
int(self.timeout.total_seconds() * 1000), self.disable)
656
# Also start a new checker *right now*.
657
self.start_checker()
658
659
def checker_callback(self, source, condition, connection,
660
command):
355
661
"""The checker has completed, so take appropriate actions."""
356
662
self.checker_callback_tag = None
357
663
self.checker = None
358
if os.WIFEXITED(condition):
359
exitstatus = os.WEXITSTATUS(condition)
360
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
664
# Read return code from connection (see call_pipe)
665
returncode = connection.recv()
666
connection.close()
667
668
if returncode >= 0:
669
self.last_checker_status = returncode
670
self.last_checker_signal = None
671
if self.last_checker_status == 0:
672
logger.info("Checker for %(name)s succeeded",
362
673
vars(self))
363
674
self.checked_ok()
364
675
else:
365
logger.info(u"Checker for %(name)s failed",
366
vars(self))
676
logger.info("Checker for %(name)s failed", vars(self))
367
677
else:
368
logger.warning(u"Checker for %(name)s crashed?",
678
self.last_checker_status = -1
679
self.last_checker_signal = -returncode
680
logger.warning("Checker for %(name)s crashed?",
369
681
vars(self))
682
return False
370
683
371
684
def checked_ok(self):
372
"""Bump up the timeout for this client.
373
374
This should only be called when the client has been seen,
375
alive and well.
376
"""
685
"""Assert that the client has been seen, alive and well."""
377
686
self.last_checked_ok = datetime.datetime.utcnow()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
687
self.last_checker_status = 0
688
self.last_checker_signal = None
689
self.bump_timeout()
690
691
def bump_timeout(self, timeout=None):
692
"""Bump up the timeout for this client."""
693
if timeout is None:
694
timeout = self.timeout
695
if self.disable_initiator_tag is not None:
696
gobject.source_remove(self.disable_initiator_tag)
697
self.disable_initiator_tag = None
698
if getattr(self, "enabled", False):
699
self.disable_initiator_tag = gobject.timeout_add(
700
int(timeout.total_seconds() * 1000), self.disable)
701
self.expires = datetime.datetime.utcnow() + timeout
702
703
def need_approval(self):
704
self.last_approval_request = datetime.datetime.utcnow()
382
705
383
706
def start_checker(self):
384
707
"""Start a new checker subprocess if one is not running.
386
709
If a checker already exists, leave it running and do
387
710
nothing."""
388
711
# The reason for not killing a running checker is that if we
389
# did that, then if a checker (for some reason) started
390
# running slowly and taking more than 'interval' time, the
391
# client would inevitably timeout, since no checker would get
392
# a chance to run to completion. If we instead leave running
712
# did that, and if a checker (for some reason) started running
713
# slowly and taking more than 'interval' time, then the client
714
# would inevitably timeout, since no checker would get a
715
# chance to run to completion. If we instead leave running
393
716
# checkers alone, the checker would have to take more time
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
717
# than 'timeout' for the client to be disabled, which is as it
718
# should be.
396
719
397
# If a checker exists, make sure it is not a zombie
398
if self.checker is not None:
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
400
if pid:
401
logger.warning(u"Checker was a zombie")
402
gobject.source_remove(self.checker_callback_tag)
403
self.checker_callback(pid, status,
404
self.current_checker_command)
720
if self.checker is not None and not self.checker.is_alive():
721
logger.warning("Checker was not alive; joining")
722
self.checker.join()
723
self.checker = None
405
724
# Start a new checker if needed
406
725
if self.checker is None:
726
# Escape attributes for the shell
727
escaped_attrs = {
728
attr: re.escape(str(getattr(self, attr)))
729
for attr in self.runtime_expansions }
407
730
try:
408
# In case checker_command has exactly one % operator
409
command = self.checker_command % self.host
410
except TypeError:
411
# Escape attributes for the shell
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
416
for key, val in
417
vars(self).iteritems())
418
try:
419
command = self.checker_command % escaped_attrs
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
423
return True # Try again later
731
command = self.checker_command % escaped_attrs
732
except TypeError as error:
733
logger.error('Could not format string "%s"',
734
self.checker_command,
735
exc_info=error)
736
return True # Try again later
424
737
self.current_checker_command = command
425
try:
426
logger.info(u"Starting checker %r for %s",
427
command, self.name)
428
# We don't need to redirect stdout and stderr, since
429
# in normal mode, that is already done by daemon(),
430
# and in debug mode we don't want to. (Stdin is
431
# always replaced by /dev/null.)
432
self.checker = subprocess.Popen(command,
433
close_fds=True,
434
shell=True, cwd=u"/")
435
self.checker_callback_tag = (gobject.child_watch_add
436
(self.checker.pid,
437
self.checker_callback,
438
data=command))
439
# The checker may have completed before the gobject
440
# watch was added. Check for this.
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
442
if pid:
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status, command)
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
447
error)
738
logger.info("Starting checker %r for %s", command,
739
self.name)
740
# We don't need to redirect stdout and stderr, since
741
# in normal mode, that is already done by daemon(),
742
# and in debug mode we don't want to. (Stdin is
743
# always replaced by /dev/null.)
744
# The exception is when not debugging but nevertheless
745
# running in the foreground; use the previously
746
# created wnull.
747
popen_args = { "close_fds": True,
748
"shell": True,
749
"cwd": "/" }
750
if (not self.server_settings["debug"]
751
and self.server_settings["foreground"]):
752
popen_args.update({"stdout": wnull,
753
"stderr": wnull })
754
pipe = multiprocessing.Pipe(duplex = False)
755
self.checker = multiprocessing.Process(
756
target = call_pipe,
757
args = (pipe[1], subprocess.call, command),
758
kwargs = popen_args)
759
self.checker.start()
760
self.checker_callback_tag = gobject.io_add_watch(
761
pipe[0].fileno(), gobject.IO_IN,
762
self.checker_callback, pipe[0], command)
448
763
# Re-run this periodically if run by gobject.timeout_add
449
764
return True
450
765
453
768
if self.checker_callback_tag:
454
769
gobject.source_remove(self.checker_callback_tag)
455
770
self.checker_callback_tag = None
456
if getattr(self, u"checker", None) is None:
771
if getattr(self, "checker", None) is None:
457
772
return
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
459
try:
460
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
462
#if self.checker.poll() is None:
463
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
465
if error.errno != errno.ESRCH: # No such process
466
raise
773
logger.debug("Stopping checker for %(name)s", vars(self))
774
self.checker.terminate()
467
775
self.checker = None
468
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
472
return False
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
476
else:
477
return now < (self.last_checked_ok + self.timeout)
478
479
480
class ClientDBus(Client, dbus.service.Object):
776
777
778
def dbus_service_property(dbus_interface,
779
signature="v",
780
access="readwrite",
781
byte_arrays=False):
782
"""Decorators for marking methods of a DBusObjectWithProperties to
783
become properties on the D-Bus.
784
785
The decorated method will be called with no arguments by "Get"
786
and with one argument by "Set".
787
788
The parameters, where they are supported, are the same as
789
dbus.service.method, except there is only "signature", since the
790
type from Get() and the type sent to Set() is the same.
791
"""
792
# Encoding deeply encoded byte arrays is not supported yet by the
793
# "Set" method, so we fail early here:
794
if byte_arrays and signature != "ay":
795
raise ValueError("Byte arrays not supported for non-'ay'"
796
" signature {!r}".format(signature))
797
798
def decorator(func):
799
func._dbus_is_property = True
800
func._dbus_interface = dbus_interface
801
func._dbus_signature = signature
802
func._dbus_access = access
803
func._dbus_name = func.__name__
804
if func._dbus_name.endswith("_dbus_property"):
805
func._dbus_name = func._dbus_name[:-14]
806
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
807
return func
808
809
return decorator
810
811
812
def dbus_interface_annotations(dbus_interface):
813
"""Decorator for marking functions returning interface annotations
814
815
Usage:
816
817
@dbus_interface_annotations("org.example.Interface")
818
def _foo(self): # Function name does not matter
819
return {"org.freedesktop.DBus.Deprecated": "true",
820
"org.freedesktop.DBus.Property.EmitsChangedSignal":
821
"false"}
822
"""
823
824
def decorator(func):
825
func._dbus_is_interface = True
826
func._dbus_interface = dbus_interface
827
func._dbus_name = dbus_interface
828
return func
829
830
return decorator
831
832
833
def dbus_annotations(annotations):
834
"""Decorator to annotate D-Bus methods, signals or properties
835
Usage:
836
837
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
838
"org.freedesktop.DBus.Property."
839
"EmitsChangedSignal": "false"})
840
@dbus_service_property("org.example.Interface", signature="b",
841
access="r")
842
def Property_dbus_property(self):
843
return dbus.Boolean(False)
844
845
See also the DBusObjectWithAnnotations class.
846
"""
847
848
def decorator(func):
849
func._dbus_annotations = annotations
850
return func
851
852
return decorator
853
854
855
class DBusPropertyException(dbus.exceptions.DBusException):
856
"""A base class for D-Bus property-related exceptions
857
"""
858
pass
859
860
861
class DBusPropertyAccessException(DBusPropertyException):
862
"""A property's access permissions disallows an operation.
863
"""
864
pass
865
866
867
class DBusPropertyNotFound(DBusPropertyException):
868
"""An attempt was made to access a non-existing property.
869
"""
870
pass
871
872
873
class DBusObjectWithAnnotations(dbus.service.Object):
874
"""A D-Bus object with annotations.
875
876
Classes inheriting from this can use the dbus_annotations
877
decorator to add annotations to methods or signals.
878
"""
879
880
@staticmethod
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
883
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
886
"""
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
False)
889
890
def _get_all_dbus_things(self, thing):
891
"""Returns a generator of (name, attribute) pairs
892
"""
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
896
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
898
899
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
900
out_signature = "s",
901
path_keyword = 'object_path',
902
connection_keyword = 'connection')
903
def Introspect(self, object_path, connection):
904
"""Overloading of standard D-Bus method.
905
906
Inserts annotation tags on methods and signals.
907
"""
908
xmlstring = dbus.service.Object.Introspect(self, object_path,
909
connection)
910
try:
911
document = xml.dom.minidom.parseString(xmlstring)
912
913
for if_tag in document.getElementsByTagName("interface"):
914
# Add annotation tags
915
for typ in ("method", "signal"):
916
for tag in if_tag.getElementsByTagName(typ):
917
annots = dict()
918
for name, prop in (self.
919
_get_all_dbus_things(typ)):
920
if (name == tag.getAttribute("name")
921
and prop._dbus_interface
922
== if_tag.getAttribute("name")):
923
annots.update(getattr(
924
prop, "_dbus_annotations", {}))
925
for name, value in annots.items():
926
ann_tag = document.createElement(
927
"annotation")
928
ann_tag.setAttribute("name", name)
929
ann_tag.setAttribute("value", value)
930
tag.appendChild(ann_tag)
931
# Add interface annotation tags
932
for annotation, value in dict(
933
itertools.chain.from_iterable(
934
annotations().items()
935
for name, annotations
936
in self._get_all_dbus_things("interface")
937
if name == if_tag.getAttribute("name")
938
)).items():
939
ann_tag = document.createElement("annotation")
940
ann_tag.setAttribute("name", annotation)
941
ann_tag.setAttribute("value", value)
942
if_tag.appendChild(ann_tag)
943
# Fix argument name for the Introspect method itself
944
if (if_tag.getAttribute("name")
945
== dbus.INTROSPECTABLE_IFACE):
946
for cn in if_tag.getElementsByTagName("method"):
947
if cn.getAttribute("name") == "Introspect":
948
for arg in cn.getElementsByTagName("arg"):
949
if (arg.getAttribute("direction")
950
== "out"):
951
arg.setAttribute("name",
952
"xml_data")
953
xmlstring = document.toxml("utf-8")
954
document.unlink()
955
except (AttributeError, xml.dom.DOMException,
956
xml.parsers.expat.ExpatError) as error:
957
logger.error("Failed to override Introspection method",
958
exc_info=error)
959
return xmlstring
960
961
962
class DBusObjectWithProperties(DBusObjectWithAnnotations):
963
"""A D-Bus object with properties.
964
965
Classes inheriting from this can use the dbus_service_property
966
decorator to expose methods as D-Bus properties. It exposes the
967
standard Get(), Set(), and GetAll() methods on the D-Bus.
968
"""
969
970
def _get_dbus_property(self, interface_name, property_name):
971
"""Returns a bound method if one exists which is a D-Bus
972
property with the specified name and interface.
973
"""
974
for cls in self.__class__.__mro__:
975
for name, value in inspect.getmembers(
976
cls, self._is_dbus_thing("property")):
977
if (value._dbus_name == property_name
978
and value._dbus_interface == interface_name):
979
return value.__get__(self)
980
981
# No such property
982
raise DBusPropertyNotFound("{}:{}.{}".format(
983
self.dbus_object_path, interface_name, property_name))
984
985
@classmethod
986
def _get_all_interface_names(cls):
987
"""Get a sequence of all interfaces supported by an object"""
988
return (name for name in set(getattr(getattr(x, attr),
989
"_dbus_interface", None)
990
for x in (inspect.getmro(cls))
991
for attr in dir(x))
992
if name is not None)
993
994
@dbus.service.method(dbus.PROPERTIES_IFACE,
995
in_signature="ss",
996
out_signature="v")
997
def Get(self, interface_name, property_name):
998
"""Standard D-Bus property Get() method, see D-Bus standard.
999
"""
1000
prop = self._get_dbus_property(interface_name, property_name)
1001
if prop._dbus_access == "write":
1002
raise DBusPropertyAccessException(property_name)
1003
value = prop()
1004
if not hasattr(value, "variant_level"):
1005
return value
1006
return type(value)(value, variant_level=value.variant_level+1)
1007
1008
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1009
def Set(self, interface_name, property_name, value):
1010
"""Standard D-Bus property Set() method, see D-Bus standard.
1011
"""
1012
prop = self._get_dbus_property(interface_name, property_name)
1013
if prop._dbus_access == "read":
1014
raise DBusPropertyAccessException(property_name)
1015
if prop._dbus_get_args_options["byte_arrays"]:
1016
# The byte_arrays option is not supported yet on
1017
# signatures other than "ay".
1018
if prop._dbus_signature != "ay":
1019
raise ValueError("Byte arrays not supported for non-"
1020
"'ay' signature {!r}"
1021
.format(prop._dbus_signature))
1022
value = dbus.ByteArray(b''.join(chr(byte)
1023
for byte in value))
1024
prop(value)
1025
1026
@dbus.service.method(dbus.PROPERTIES_IFACE,
1027
in_signature="s",
1028
out_signature="a{sv}")
1029
def GetAll(self, interface_name):
1030
"""Standard D-Bus property GetAll() method, see D-Bus
1031
standard.
1032
1033
Note: Will not include properties with access="write".
1034
"""
1035
properties = {}
1036
for name, prop in self._get_all_dbus_things("property"):
1037
if (interface_name
1038
and interface_name != prop._dbus_interface):
1039
# Interface non-empty but did not match
1040
continue
1041
# Ignore write-only properties
1042
if prop._dbus_access == "write":
1043
continue
1044
value = prop()
1045
if not hasattr(value, "variant_level"):
1046
properties[name] = value
1047
continue
1048
properties[name] = type(value)(
1049
value, variant_level = value.variant_level + 1)
1050
return dbus.Dictionary(properties, signature="sv")
1051
1052
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1053
def PropertiesChanged(self, interface_name, changed_properties,
1054
invalidated_properties):
1055
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1056
standard.
1057
"""
1058
pass
1059
1060
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1061
out_signature="s",
1062
path_keyword='object_path',
1063
connection_keyword='connection')
1064
def Introspect(self, object_path, connection):
1065
"""Overloading of standard D-Bus method.
1066
1067
Inserts property tags and interface annotation tags.
1068
"""
1069
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1070
object_path,
1071
connection)
1072
try:
1073
document = xml.dom.minidom.parseString(xmlstring)
1074
1075
def make_tag(document, name, prop):
1076
e = document.createElement("property")
1077
e.setAttribute("name", name)
1078
e.setAttribute("type", prop._dbus_signature)
1079
e.setAttribute("access", prop._dbus_access)
1080
return e
1081
1082
for if_tag in document.getElementsByTagName("interface"):
1083
# Add property tags
1084
for tag in (make_tag(document, name, prop)
1085
for name, prop
1086
in self._get_all_dbus_things("property")
1087
if prop._dbus_interface
1088
== if_tag.getAttribute("name")):
1089
if_tag.appendChild(tag)
1090
# Add annotation tags for properties
1091
for tag in if_tag.getElementsByTagName("property"):
1092
annots = dict()
1093
for name, prop in self._get_all_dbus_things(
1094
"property"):
1095
if (name == tag.getAttribute("name")
1096
and prop._dbus_interface
1097
== if_tag.getAttribute("name")):
1098
annots.update(getattr(
1099
prop, "_dbus_annotations", {}))
1100
for name, value in annots.items():
1101
ann_tag = document.createElement(
1102
"annotation")
1103
ann_tag.setAttribute("name", name)
1104
ann_tag.setAttribute("value", value)
1105
tag.appendChild(ann_tag)
1106
# Add the names to the return values for the
1107
# "org.freedesktop.DBus.Properties" methods
1108
if (if_tag.getAttribute("name")
1109
== "org.freedesktop.DBus.Properties"):
1110
for cn in if_tag.getElementsByTagName("method"):
1111
if cn.getAttribute("name") == "Get":
1112
for arg in cn.getElementsByTagName("arg"):
1113
if (arg.getAttribute("direction")
1114
== "out"):
1115
arg.setAttribute("name", "value")
1116
elif cn.getAttribute("name") == "GetAll":
1117
for arg in cn.getElementsByTagName("arg"):
1118
if (arg.getAttribute("direction")
1119
== "out"):
1120
arg.setAttribute("name", "props")
1121
xmlstring = document.toxml("utf-8")
1122
document.unlink()
1123
except (AttributeError, xml.dom.DOMException,
1124
xml.parsers.expat.ExpatError) as error:
1125
logger.error("Failed to override Introspection method",
1126
exc_info=error)
1127
return xmlstring
1128
1129
try:
1130
dbus.OBJECT_MANAGER_IFACE
1131
except AttributeError:
1132
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1133
1134
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1135
"""A D-Bus object with an ObjectManager.
1136
1137
Classes inheriting from this exposes the standard
1138
GetManagedObjects call and the InterfacesAdded and
1139
InterfacesRemoved signals on the standard
1140
"org.freedesktop.DBus.ObjectManager" interface.
1141
1142
Note: No signals are sent automatically; they must be sent
1143
manually.
1144
"""
1145
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1146
out_signature = "a{oa{sa{sv}}}")
1147
def GetManagedObjects(self):
1148
"""This function must be overridden"""
1149
raise NotImplementedError()
1150
1151
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1152
signature = "oa{sa{sv}}")
1153
def InterfacesAdded(self, object_path, interfaces_and_properties):
1154
pass
1155
1156
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1157
def InterfacesRemoved(self, object_path, interfaces):
1158
pass
1159
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1164
def Introspect(self, object_path, connection):
1165
"""Overloading of standard D-Bus method.
1166
1167
Override return argument name of GetManagedObjects to be
1168
"objpath_interfaces_and_properties"
1169
"""
1170
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1171
object_path,
1172
connection)
1173
try:
1174
document = xml.dom.minidom.parseString(xmlstring)
1175
1176
for if_tag in document.getElementsByTagName("interface"):
1177
# Fix argument name for the GetManagedObjects method
1178
if (if_tag.getAttribute("name")
1179
== dbus.OBJECT_MANAGER_IFACE):
1180
for cn in if_tag.getElementsByTagName("method"):
1181
if (cn.getAttribute("name")
1182
== "GetManagedObjects"):
1183
for arg in cn.getElementsByTagName("arg"):
1184
if (arg.getAttribute("direction")
1185
== "out"):
1186
arg.setAttribute(
1187
"name",
1188
"objpath_interfaces"
1189
"_and_properties")
1190
xmlstring = document.toxml("utf-8")
1191
document.unlink()
1192
except (AttributeError, xml.dom.DOMException,
1193
xml.parsers.expat.ExpatError) as error:
1194
logger.error("Failed to override Introspection method",
1195
exc_info = error)
1196
return xmlstring
1197
1198
def datetime_to_dbus(dt, variant_level=0):
1199
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1200
if dt is None:
1201
return dbus.String("", variant_level = variant_level)
1202
return dbus.String(dt.isoformat(), variant_level=variant_level)
1203
1204
1205
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1206
"""A class decorator; applied to a subclass of
1207
dbus.service.Object, it will add alternate D-Bus attributes with
1208
interface names according to the "alt_interface_names" mapping.
1209
Usage:
1210
1211
@alternate_dbus_interfaces({"org.example.Interface":
1212
"net.example.AlternateInterface"})
1213
class SampleDBusObject(dbus.service.Object):
1214
@dbus.service.method("org.example.Interface")
1215
def SampleDBusMethod():
1216
pass
1217
1218
The above "SampleDBusMethod" on "SampleDBusObject" will be
1219
reachable via two interfaces: "org.example.Interface" and
1220
"net.example.AlternateInterface", the latter of which will have
1221
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1222
"true", unless "deprecate" is passed with a False value.
1223
1224
This works for methods and signals, and also for D-Bus properties
1225
(from DBusObjectWithProperties) and interfaces (from the
1226
dbus_interface_annotations decorator).
1227
"""
1228
1229
def wrapper(cls):
1230
for orig_interface_name, alt_interface_name in (
1231
alt_interface_names.items()):
1232
attr = {}
1233
interface_names = set()
1234
# Go though all attributes of the class
1235
for attrname, attribute in inspect.getmembers(cls):
1236
# Ignore non-D-Bus attributes, and D-Bus attributes
1237
# with the wrong interface name
1238
if (not hasattr(attribute, "_dbus_interface")
1239
or not attribute._dbus_interface.startswith(
1240
orig_interface_name)):
1241
continue
1242
# Create an alternate D-Bus interface name based on
1243
# the current name
1244
alt_interface = attribute._dbus_interface.replace(
1245
orig_interface_name, alt_interface_name)
1246
interface_names.add(alt_interface)
1247
# Is this a D-Bus signal?
1248
if getattr(attribute, "_dbus_is_signal", False):
1249
if sys.version_info.major == 2:
1250
# Extract the original non-method undecorated
1251
# function by black magic
1252
nonmethod_func = (dict(
1253
zip(attribute.func_code.co_freevars,
1254
attribute.__closure__))
1255
["func"].cell_contents)
1256
else:
1257
nonmethod_func = attribute
1258
# Create a new, but exactly alike, function
1259
# object, and decorate it to be a new D-Bus signal
1260
# with the alternate D-Bus interface name
1261
if sys.version_info.major == 2:
1262
new_function = types.FunctionType(
1263
nonmethod_func.func_code,
1264
nonmethod_func.func_globals,
1265
nonmethod_func.func_name,
1266
nonmethod_func.func_defaults,
1267
nonmethod_func.func_closure)
1268
else:
1269
new_function = types.FunctionType(
1270
nonmethod_func.__code__,
1271
nonmethod_func.__globals__,
1272
nonmethod_func.__name__,
1273
nonmethod_func.__defaults__,
1274
nonmethod_func.__closure__)
1275
new_function = (dbus.service.signal(
1276
alt_interface,
1277
attribute._dbus_signature)(new_function))
1278
# Copy annotations, if any
1279
try:
1280
new_function._dbus_annotations = dict(
1281
attribute._dbus_annotations)
1282
except AttributeError:
1283
pass
1284
# Define a creator of a function to call both the
1285
# original and alternate functions, so both the
1286
# original and alternate signals gets sent when
1287
# the function is called
1288
def fixscope(func1, func2):
1289
"""This function is a scope container to pass
1290
func1 and func2 to the "call_both" function
1291
outside of its arguments"""
1292
1293
@functools.wraps(func2)
1294
def call_both(*args, **kwargs):
1295
"""This function will emit two D-Bus
1296
signals by calling func1 and func2"""
1297
func1(*args, **kwargs)
1298
func2(*args, **kwargs)
1299
# Make wrapper function look like a D-Bus signal
1300
for name, attr in inspect.getmembers(func2):
1301
if name.startswith("_dbus_"):
1302
setattr(call_both, name, attr)
1303
1304
return call_both
1305
# Create the "call_both" function and add it to
1306
# the class
1307
attr[attrname] = fixscope(attribute, new_function)
1308
# Is this a D-Bus method?
1309
elif getattr(attribute, "_dbus_is_method", False):
1310
# Create a new, but exactly alike, function
1311
# object. Decorate it to be a new D-Bus method
1312
# with the alternate D-Bus interface name. Add it
1313
# to the class.
1314
attr[attrname] = (
1315
dbus.service.method(
1316
alt_interface,
1317
attribute._dbus_in_signature,
1318
attribute._dbus_out_signature)
1319
(types.FunctionType(attribute.func_code,
1320
attribute.func_globals,
1321
attribute.func_name,
1322
attribute.func_defaults,
1323
attribute.func_closure)))
1324
# Copy annotations, if any
1325
try:
1326
attr[attrname]._dbus_annotations = dict(
1327
attribute._dbus_annotations)
1328
except AttributeError:
1329
pass
1330
# Is this a D-Bus property?
1331
elif getattr(attribute, "_dbus_is_property", False):
1332
# Create a new, but exactly alike, function
1333
# object, and decorate it to be a new D-Bus
1334
# property with the alternate D-Bus interface
1335
# name. Add it to the class.
1336
attr[attrname] = (dbus_service_property(
1337
alt_interface, attribute._dbus_signature,
1338
attribute._dbus_access,
1339
attribute._dbus_get_args_options
1340
["byte_arrays"])
1341
(types.FunctionType(
1342
attribute.func_code,
1343
attribute.func_globals,
1344
attribute.func_name,
1345
attribute.func_defaults,
1346
attribute.func_closure)))
1347
# Copy annotations, if any
1348
try:
1349
attr[attrname]._dbus_annotations = dict(
1350
attribute._dbus_annotations)
1351
except AttributeError:
1352
pass
1353
# Is this a D-Bus interface?
1354
elif getattr(attribute, "_dbus_is_interface", False):
1355
# Create a new, but exactly alike, function
1356
# object. Decorate it to be a new D-Bus interface
1357
# with the alternate D-Bus interface name. Add it
1358
# to the class.
1359
attr[attrname] = (
1360
dbus_interface_annotations(alt_interface)
1361
(types.FunctionType(attribute.func_code,
1362
attribute.func_globals,
1363
attribute.func_name,
1364
attribute.func_defaults,
1365
attribute.func_closure)))
1366
if deprecate:
1367
# Deprecate all alternate interfaces
1368
iname="_AlternateDBusNames_interface_annotation{}"
1369
for interface_name in interface_names:
1370
1371
@dbus_interface_annotations(interface_name)
1372
def func(self):
1373
return { "org.freedesktop.DBus.Deprecated":
1374
"true" }
1375
# Find an unused name
1376
for aname in (iname.format(i)
1377
for i in itertools.count()):
1378
if aname not in attr:
1379
attr[aname] = func
1380
break
1381
if interface_names:
1382
# Replace the class with a new subclass of it with
1383
# methods, signals, etc. as created above.
1384
cls = type(b"{}Alternate".format(cls.__name__),
1385
(cls, ), attr)
1386
return cls
1387
1388
return wrapper
1389
1390
1391
@alternate_dbus_interfaces({"se.recompile.Mandos":
1392
"se.bsnet.fukt.Mandos"})
1393
class ClientDBus(Client, DBusObjectWithProperties):
481
1394
"""A Client class using D-Bus
482
1395
483
1396
Attributes:
484
1397
dbus_object_path: dbus.ObjectPath
485
1398
bus: dbus.SystemBus()
486
1399
"""
1400
1401
runtime_expansions = (Client.runtime_expansions
1402
+ ("dbus_object_path", ))
1403
1404
_interface = "se.recompile.Mandos.Client"
1405
487
1406
# dbus.service.Object doesn't use super(), so we can't either.
488
1407
489
1408
def __init__(self, bus = None, *args, **kwargs):
491
1410
Client.__init__(self, *args, **kwargs)
492
1411
# Only now, when this client is initialized, can it show up on
493
1412
# the D-Bus
494
self.dbus_object_path = (dbus.ObjectPath
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
506
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
510
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
517
return r
518
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
523
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
526
return r
1413
client_object_name = str(self.name).translate(
1414
{ord("."): ord("_"),
1415
ord("-"): ord("_")})
1416
self.dbus_object_path = dbus.ObjectPath(
1417
"/clients/" + client_object_name)
1418
DBusObjectWithProperties.__init__(self, self.bus,
1419
self.dbus_object_path)
1420
1421
def notifychangeproperty(transform_func, dbus_name,
1422
type_func=lambda x: x,
1423
variant_level=1,
1424
invalidate_only=False,
1425
_interface=_interface):
1426
""" Modify a variable so that it's a property which announces
1427
its changes to DBus.
1428
1429
transform_fun: Function that takes a value and a variant_level
1430
and transforms it to a D-Bus type.
1431
dbus_name: D-Bus name of the variable
1432
type_func: Function that transform the value before sending it
1433
to the D-Bus. Default: no transform
1434
variant_level: D-Bus variant level. Default: 1
1435
"""
1436
attrname = "_{}".format(dbus_name)
1437
1438
def setter(self, value):
1439
if hasattr(self, "dbus_object_path"):
1440
if (not hasattr(self, attrname) or
1441
type_func(getattr(self, attrname, None))
1442
!= type_func(value)):
1443
if invalidate_only:
1444
self.PropertiesChanged(
1445
_interface, dbus.Dictionary(),
1446
dbus.Array((dbus_name, )))
1447
else:
1448
dbus_value = transform_func(
1449
type_func(value),
1450
variant_level = variant_level)
1451
self.PropertyChanged(dbus.String(dbus_name),
1452
dbus_value)
1453
self.PropertiesChanged(
1454
_interface,
1455
dbus.Dictionary({ dbus.String(dbus_name):
1456
dbus_value }),
1457
dbus.Array())
1458
setattr(self, attrname, value)
1459
1460
return property(lambda self: getattr(self, attrname), setter)
1461
1462
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1463
approvals_pending = notifychangeproperty(dbus.Boolean,
1464
"ApprovalPending",
1465
type_func = bool)
1466
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1467
last_enabled = notifychangeproperty(datetime_to_dbus,
1468
"LastEnabled")
1469
checker = notifychangeproperty(
1470
dbus.Boolean, "CheckerRunning",
1471
type_func = lambda checker: checker is not None)
1472
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1473
"LastCheckedOK")
1474
last_checker_status = notifychangeproperty(dbus.Int16,
1475
"LastCheckerStatus")
1476
last_approval_request = notifychangeproperty(
1477
datetime_to_dbus, "LastApprovalRequest")
1478
approved_by_default = notifychangeproperty(dbus.Boolean,
1479
"ApprovedByDefault")
1480
approval_delay = notifychangeproperty(
1481
dbus.UInt64, "ApprovalDelay",
1482
type_func = lambda td: td.total_seconds() * 1000)
1483
approval_duration = notifychangeproperty(
1484
dbus.UInt64, "ApprovalDuration",
1485
type_func = lambda td: td.total_seconds() * 1000)
1486
host = notifychangeproperty(dbus.String, "Host")
1487
timeout = notifychangeproperty(
1488
dbus.UInt64, "Timeout",
1489
type_func = lambda td: td.total_seconds() * 1000)
1490
extended_timeout = notifychangeproperty(
1491
dbus.UInt64, "ExtendedTimeout",
1492
type_func = lambda td: td.total_seconds() * 1000)
1493
interval = notifychangeproperty(
1494
dbus.UInt64, "Interval",
1495
type_func = lambda td: td.total_seconds() * 1000)
1496
checker_command = notifychangeproperty(dbus.String, "Checker")
1497
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1498
invalidate_only=True)
1499
1500
del notifychangeproperty
527
1501
528
1502
def __del__(self, *args, **kwargs):
529
1503
try:
530
1504
self.remove_from_connection()
531
1505
except LookupError:
532
1506
pass
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1507
if hasattr(DBusObjectWithProperties, "__del__"):
1508
DBusObjectWithProperties.__del__(self, *args, **kwargs)
535
1509
Client.__del__(self, *args, **kwargs)
536
1510
537
def checker_callback(self, pid, condition, command,
538
*args, **kwargs):
539
self.checker_callback_tag = None
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
544
if os.WIFEXITED(condition):
545
exitstatus = os.WEXITSTATUS(condition)
1511
def checker_callback(self, source, condition,
1512
connection, command, *args, **kwargs):
1513
ret = Client.checker_callback(self, source, condition,
1514
connection, command, *args,
1515
**kwargs)
1516
exitstatus = self.last_checker_status
1517
if exitstatus >= 0:
546
1518
# Emit D-Bus signal
547
1519
self.CheckerCompleted(dbus.Int16(exitstatus),
548
dbus.Int64(condition),
1520
# This is specific to GNU libC
1521
dbus.Int64(exitstatus << 8),
549
1522
dbus.String(command))
550
1523
else:
551
1524
# Emit D-Bus signal
552
1525
self.CheckerCompleted(dbus.Int16(-1),
553
dbus.Int64(condition),
1526
dbus.Int64(
1527
# This is specific to GNU libC
1528
(exitstatus << 8)
1529
| self.last_checker_signal),
554
1530
dbus.String(command))
555
556
return Client.checker_callback(self, pid, condition, command,
557
*args, **kwargs)
558
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
561
# Emit D-Bus signal
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
566
return r
1531
return ret
567
1532
568
1533
def start_checker(self, *args, **kwargs):
569
old_checker = self.checker
570
if self.checker is not None:
571
old_checker_pid = self.checker.pid
572
else:
573
old_checker_pid = None
1534
old_checker_pid = getattr(self.checker, "pid", None)
574
1535
r = Client.start_checker(self, *args, **kwargs)
575
1536
# Only if new checker process was started
576
1537
if (self.checker is not None
577
1538
and old_checker_pid != self.checker.pid):
578
1539
# Emit D-Bus signal
579
1540
self.CheckerStarted(self.current_checker_command)
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
583
return r
584
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
592
return r
593
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
596
597
# CheckedOK - method
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
1541
return r
1542
1543
def _reset_approved(self):
1544
self.approved = None
1545
return False
1546
1547
def approve(self, value=True):
1548
self.approved = value
1549
gobject.timeout_add(int(self.approval_duration.total_seconds()
1550
* 1000), self._reset_approved)
1551
self.send_changedstate()
1552
1553
## D-Bus methods, signals & properties
1554
1555
## Interfaces
1556
1557
## Signals
601
1558
602
1559
# CheckerCompleted - signal
603
@dbus.service.signal(_interface, signature=u"nxs")
1560
@dbus.service.signal(_interface, signature="nxs")
604
1561
def CheckerCompleted(self, exitcode, waitstatus, command):
605
1562
"D-Bus signal"
606
1563
pass
607
1564
608
1565
# CheckerStarted - signal
609
@dbus.service.signal(_interface, signature=u"s")
1566
@dbus.service.signal(_interface, signature="s")
610
1567
def CheckerStarted(self, command):
611
1568
"D-Bus signal"
612
1569
pass
613
1570
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
617
"D-Bus method"
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
642
variant_level=1),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
645
variant_level=1),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
648
variant_level=1),
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
651
variant_level=1),
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
654
variant_level=1)
655
}, signature=u"sv")
656
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
661
662
1571
# PropertyChanged - signal
663
@dbus.service.signal(_interface, signature=u"sv")
1572
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1573
@dbus.service.signal(_interface, signature="sv")
664
1574
def PropertyChanged(self, property, value):
665
1575
"D-Bus signal"
666
1576
pass
667
1577
668
# ReceivedSecret - signal
1578
# GotSecret - signal
669
1579
@dbus.service.signal(_interface)
670
def ReceivedSecret(self):
671
"D-Bus signal"
1580
def GotSecret(self):
1581
"""D-Bus signal
1582
Is sent after a successful transfer of secret from the Mandos
1583
server to mandos-client
1584
"""
672
1585
pass
673
1586
674
1587
# Rejected - signal
675
@dbus.service.signal(_interface)
676
def Rejected(self):
1588
@dbus.service.signal(_interface, signature="s")
1589
def Rejected(self, reason):
677
1590
"D-Bus signal"
678
1591
pass
679
1592
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
685
# Emit D-Bus signal
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
688
variant_level=1))
689
690
# SetHost - method
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
694
self.host = host
695
# Emit D-Bus signal
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
698
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
703
# Emit D-Bus signal
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
706
variant_level=1)))
707
708
# SetSecret - method
709
@dbus.service.method(_interface, in_signature=u"ay",
710
byte_arrays=True)
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
714
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
719
# Emit D-Bus signal
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
722
variant_level=1)))
1593
# NeedApproval - signal
1594
@dbus.service.signal(_interface, signature="tb")
1595
def NeedApproval(self, timeout, default):
1596
"D-Bus signal"
1597
return self.need_approval()
1598
1599
## Methods
1600
1601
# Approve - method
1602
@dbus.service.method(_interface, in_signature="b")
1603
def Approve(self, value):
1604
self.approve(value)
1605
1606
# CheckedOK - method
1607
@dbus.service.method(_interface)
1608
def CheckedOK(self):
1609
self.checked_ok()
723
1610
724
1611
# Enable - method
1612
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
725
1613
@dbus.service.method(_interface)
726
1614
def Enable(self):
727
1615
"D-Bus method"
728
1616
self.enable()
729
1617
730
1618
# StartChecker - method
1619
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
731
1620
@dbus.service.method(_interface)
732
1621
def StartChecker(self):
733
1622
"D-Bus method"
734
1623
self.start_checker()
735
1624
736
1625
# Disable - method
1626
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
737
1627
@dbus.service.method(_interface)
738
1628
def Disable(self):
739
1629
"D-Bus method"
740
1630
self.disable()
741
1631
742
1632
# StopChecker - method
1633
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
743
1634
@dbus.service.method(_interface)
744
1635
def StopChecker(self):
745
1636
self.stop_checker()
746
1637
1638
## Properties
1639
1640
# ApprovalPending - property
1641
@dbus_service_property(_interface, signature="b", access="read")
1642
def ApprovalPending_dbus_property(self):
1643
return dbus.Boolean(bool(self.approvals_pending))
1644
1645
# ApprovedByDefault - property
1646
@dbus_service_property(_interface,
1647
signature="b",
1648
access="readwrite")
1649
def ApprovedByDefault_dbus_property(self, value=None):
1650
if value is None: # get
1651
return dbus.Boolean(self.approved_by_default)
1652
self.approved_by_default = bool(value)
1653
1654
# ApprovalDelay - property
1655
@dbus_service_property(_interface,
1656
signature="t",
1657
access="readwrite")
1658
def ApprovalDelay_dbus_property(self, value=None):
1659
if value is None: # get
1660
return dbus.UInt64(self.approval_delay.total_seconds()
1661
* 1000)
1662
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1663
1664
# ApprovalDuration - property
1665
@dbus_service_property(_interface,
1666
signature="t",
1667
access="readwrite")
1668
def ApprovalDuration_dbus_property(self, value=None):
1669
if value is None: # get
1670
return dbus.UInt64(self.approval_duration.total_seconds()
1671
* 1000)
1672
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1673
1674
# Name - property
1675
@dbus_annotations(
1676
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1677
@dbus_service_property(_interface, signature="s", access="read")
1678
def Name_dbus_property(self):
1679
return dbus.String(self.name)
1680
1681
# Fingerprint - property
1682
@dbus_annotations(
1683
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1684
@dbus_service_property(_interface, signature="s", access="read")
1685
def Fingerprint_dbus_property(self):
1686
return dbus.String(self.fingerprint)
1687
1688
# Host - property
1689
@dbus_service_property(_interface,
1690
signature="s",
1691
access="readwrite")
1692
def Host_dbus_property(self, value=None):
1693
if value is None: # get
1694
return dbus.String(self.host)
1695
self.host = str(value)
1696
1697
# Created - property
1698
@dbus_annotations(
1699
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1700
@dbus_service_property(_interface, signature="s", access="read")
1701
def Created_dbus_property(self):
1702
return datetime_to_dbus(self.created)
1703
1704
# LastEnabled - property
1705
@dbus_service_property(_interface, signature="s", access="read")
1706
def LastEnabled_dbus_property(self):
1707
return datetime_to_dbus(self.last_enabled)
1708
1709
# Enabled - property
1710
@dbus_service_property(_interface,
1711
signature="b",
1712
access="readwrite")
1713
def Enabled_dbus_property(self, value=None):
1714
if value is None: # get
1715
return dbus.Boolean(self.enabled)
1716
if value:
1717
self.enable()
1718
else:
1719
self.disable()
1720
1721
# LastCheckedOK - property
1722
@dbus_service_property(_interface,
1723
signature="s",
1724
access="readwrite")
1725
def LastCheckedOK_dbus_property(self, value=None):
1726
if value is not None:
1727
self.checked_ok()
1728
return
1729
return datetime_to_dbus(self.last_checked_ok)
1730
1731
# LastCheckerStatus - property
1732
@dbus_service_property(_interface, signature="n", access="read")
1733
def LastCheckerStatus_dbus_property(self):
1734
return dbus.Int16(self.last_checker_status)
1735
1736
# Expires - property
1737
@dbus_service_property(_interface, signature="s", access="read")
1738
def Expires_dbus_property(self):
1739
return datetime_to_dbus(self.expires)
1740
1741
# LastApprovalRequest - property
1742
@dbus_service_property(_interface, signature="s", access="read")
1743
def LastApprovalRequest_dbus_property(self):
1744
return datetime_to_dbus(self.last_approval_request)
1745
1746
# Timeout - property
1747
@dbus_service_property(_interface,
1748
signature="t",
1749
access="readwrite")
1750
def Timeout_dbus_property(self, value=None):
1751
if value is None: # get
1752
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1753
old_timeout = self.timeout
1754
self.timeout = datetime.timedelta(0, 0, 0, value)
1755
# Reschedule disabling
1756
if self.enabled:
1757
now = datetime.datetime.utcnow()
1758
self.expires += self.timeout - old_timeout
1759
if self.expires <= now:
1760
# The timeout has passed
1761
self.disable()
1762
else:
1763
if (getattr(self, "disable_initiator_tag", None)
1764
is None):
1765
return
1766
gobject.source_remove(self.disable_initiator_tag)
1767
self.disable_initiator_tag = gobject.timeout_add(
1768
int((self.expires - now).total_seconds() * 1000),
1769
self.disable)
1770
1771
# ExtendedTimeout - property
1772
@dbus_service_property(_interface,
1773
signature="t",
1774
access="readwrite")
1775
def ExtendedTimeout_dbus_property(self, value=None):
1776
if value is None: # get
1777
return dbus.UInt64(self.extended_timeout.total_seconds()
1778
* 1000)
1779
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1780
1781
# Interval - property
1782
@dbus_service_property(_interface,
1783
signature="t",
1784
access="readwrite")
1785
def Interval_dbus_property(self, value=None):
1786
if value is None: # get
1787
return dbus.UInt64(self.interval.total_seconds() * 1000)
1788
self.interval = datetime.timedelta(0, 0, 0, value)
1789
if getattr(self, "checker_initiator_tag", None) is None:
1790
return
1791
if self.enabled:
1792
# Reschedule checker run
1793
gobject.source_remove(self.checker_initiator_tag)
1794
self.checker_initiator_tag = gobject.timeout_add(
1795
value, self.start_checker)
1796
self.start_checker() # Start one now, too
1797
1798
# Checker - property
1799
@dbus_service_property(_interface,
1800
signature="s",
1801
access="readwrite")
1802
def Checker_dbus_property(self, value=None):
1803
if value is None: # get
1804
return dbus.String(self.checker_command)
1805
self.checker_command = str(value)
1806
1807
# CheckerRunning - property
1808
@dbus_service_property(_interface,
1809
signature="b",
1810
access="readwrite")
1811
def CheckerRunning_dbus_property(self, value=None):
1812
if value is None: # get
1813
return dbus.Boolean(self.checker is not None)
1814
if value:
1815
self.start_checker()
1816
else:
1817
self.stop_checker()
1818
1819
# ObjectPath - property
1820
@dbus_annotations(
1821
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
1822
"org.freedesktop.DBus.Deprecated": "true"})
1823
@dbus_service_property(_interface, signature="o", access="read")
1824
def ObjectPath_dbus_property(self):
1825
return self.dbus_object_path # is already a dbus.ObjectPath
1826
1827
# Secret = property
1828
@dbus_annotations(
1829
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1830
"invalidates"})
1831
@dbus_service_property(_interface,
1832
signature="ay",
1833
access="write",
1834
byte_arrays=True)
1835
def Secret_dbus_property(self, value):
1836
self.secret = bytes(value)
1837
747
1838
del _interface
748
1839
749
1840
1841
class ProxyClient(object):
1842
def __init__(self, child_pipe, fpr, address):
1843
self._pipe = child_pipe
1844
self._pipe.send(('init', fpr, address))
1845
if not self._pipe.recv():
1846
raise KeyError(fpr)
1847
1848
def __getattribute__(self, name):
1849
if name == '_pipe':
1850
return super(ProxyClient, self).__getattribute__(name)
1851
self._pipe.send(('getattr', name))
1852
data = self._pipe.recv()
1853
if data[0] == 'data':
1854
return data[1]
1855
if data[0] == 'function':
1856
1857
def func(*args, **kwargs):
1858
self._pipe.send(('funcall', name, args, kwargs))
1859
return self._pipe.recv()[1]
1860
1861
return func
1862
1863
def __setattr__(self, name, value):
1864
if name == '_pipe':
1865
return super(ProxyClient, self).__setattr__(name, value)
1866
self._pipe.send(('setattr', name, value))
1867
1868
750
1869
class ClientHandler(socketserver.BaseRequestHandler, object):
751
1870
"""A class to handle client connections.
752
1871
754
1873
Note: This will run in its own forked process."""
755
1874
756
1875
def handle(self):
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
762
session = (gnutls.connection
763
.ClientSession(self.request,
764
gnutls.connection
765
.X509Credentials()))
1876
with contextlib.closing(self.server.child_pipe) as child_pipe:
1877
logger.info("TCP connection from: %s",
1878
str(self.client_address))
1879
logger.debug("Pipe FD: %d",
1880
self.server.child_pipe.fileno())
766
1881
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
1882
session = gnutls.connection.ClientSession(
1883
self.request, gnutls.connection.X509Credentials())
775
1884
776
1885
# Note: gnutls.connection.X509Credentials is really a
777
1886
# generic GnuTLS certificate credentials object so long as
778
1887
# no X.509 keys are added to it. Therefore, we can use it
779
1888
# here despite using OpenPGP certificates.
780
1889
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1890
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1891
# "+AES-256-CBC", "+SHA1",
1892
# "+COMP-NULL", "+CTYPE-OPENPGP",
1893
# "+DHE-DSS"))
785
1894
# Use a fallback default, since this MUST be set.
786
1895
priority = self.server.gnutls_priority
787
1896
if priority is None:
788
priority = u"NORMAL"
789
(gnutls.library.functions
790
.gnutls_priority_set_direct(session._c_object,
791
priority, None))
792
1897
priority = "NORMAL"
1898
gnutls.library.functions.gnutls_priority_set_direct(
1899
session._c_object, priority, None)
1900
1901
# Start communication using the Mandos protocol
1902
# Get protocol number
1903
line = self.request.makefile().readline()
1904
logger.debug("Protocol version: %r", line)
1905
try:
1906
if int(line.strip().split()[0]) > 1:
1907
raise RuntimeError(line)
1908
except (ValueError, IndexError, RuntimeError) as error:
1909
logger.error("Unknown protocol version: %s", error)
1910
return
1911
1912
# Start GnuTLS connection
793
1913
try:
794
1914
session.handshake()
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1915
except gnutls.errors.GNUTLSError as error:
1916
logger.warning("Handshake failed: %s", error)
797
1917
# Do not run session.bye() here: the session is not
798
1918
# established. Just abandon the request.
799
1919
return
800
logger.debug(u"Handshake succeeded")
1920
logger.debug("Handshake succeeded")
1921
1922
approval_required = False
801
1923
try:
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
805
session.bye()
806
return
807
logger.debug(u"Fingerprint: %s", fpr)
1924
try:
1925
fpr = self.fingerprint(
1926
self.peer_certificate(session))
1927
except (TypeError,
1928
gnutls.errors.GNUTLSError) as error:
1929
logger.warning("Bad certificate: %s", error)
1930
return
1931
logger.debug("Fingerprint: %s", fpr)
1932
1933
try:
1934
client = ProxyClient(child_pipe, fpr,
1935
self.client_address)
1936
except KeyError:
1937
return
1938
1939
if client.approval_delay:
1940
delay = client.approval_delay
1941
client.approvals_pending += 1
1942
approval_required = True
1943
1944
while True:
1945
if not client.enabled:
1946
logger.info("Client %s is disabled",
1947
client.name)
1948
if self.server.use_dbus:
1949
# Emit D-Bus signal
1950
client.Rejected("Disabled")
1951
return
1952
1953
if client.approved or not client.approval_delay:
1954
#We are approved or approval is disabled
1955
break
1956
elif client.approved is None:
1957
logger.info("Client %s needs approval",
1958
client.name)
1959
if self.server.use_dbus:
1960
# Emit D-Bus signal
1961
client.NeedApproval(
1962
client.approval_delay.total_seconds()
1963
* 1000, client.approved_by_default)
1964
else:
1965
logger.warning("Client %s was not approved",
1966
client.name)
1967
if self.server.use_dbus:
1968
# Emit D-Bus signal
1969
client.Rejected("Denied")
1970
return
1971
1972
#wait until timeout or approved
1973
time = datetime.datetime.now()
1974
client.changedstate.acquire()
1975
client.changedstate.wait(delay.total_seconds())
1976
client.changedstate.release()
1977
time2 = datetime.datetime.now()
1978
if (time2 - time) >= delay:
1979
if not client.approved_by_default:
1980
logger.warning("Client %s timed out while"
1981
" waiting for approval",
1982
client.name)
1983
if self.server.use_dbus:
1984
# Emit D-Bus signal
1985
client.Rejected("Approval timed out")
1986
return
1987
else:
1988
break
1989
else:
1990
delay -= time2 - time
1991
1992
sent_size = 0
1993
while sent_size < len(client.secret):
1994
try:
1995
sent = session.send(client.secret[sent_size:])
1996
except gnutls.errors.GNUTLSError as error:
1997
logger.warning("gnutls send failed",
1998
exc_info=error)
1999
return
2000
logger.debug("Sent: %d, remaining: %d", sent,
2001
len(client.secret) - (sent_size
2002
+ sent))
2003
sent_size += sent
2004
2005
logger.info("Sending secret to %s", client.name)
2006
# bump the timeout using extended_timeout
2007
client.bump_timeout(client.extended_timeout)
2008
if self.server.use_dbus:
2009
# Emit D-Bus signal
2010
client.GotSecret()
808
2011
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s\n" % fpr)
815
session.bye()
816
return
817
# Have to check if client.still_valid(), since it is
818
# possible that the client timed out while establishing
819
# the GnuTLS session.
820
if not client.still_valid():
821
ipc.write(u"INVALID %s\n" % client.name)
822
session.bye()
823
return
824
ipc.write(u"SENDING %s\n" % client.name)
825
sent_size = 0
826
while sent_size < len(client.secret):
827
sent = session.send(client.secret[sent_size:])
828
logger.debug(u"Sent: %d, remaining: %d",
829
sent, len(client.secret)
830
- (sent_size + sent))
831
sent_size += sent
832
session.bye()
2012
finally:
2013
if approval_required:
2014
client.approvals_pending -= 1
2015
try:
2016
session.bye()
2017
except gnutls.errors.GNUTLSError as error:
2018
logger.warning("GnuTLS bye failed",
2019
exc_info=error)
833
2020
834
2021
@staticmethod
835
2022
def peer_certificate(session):
836
2023
"Return the peer's OpenPGP certificate as a bytestring"
837
2024
# If not an OpenPGP certificate...
838
if (gnutls.library.functions
839
.gnutls_certificate_type_get(session._c_object)
2025
if (gnutls.library.functions.gnutls_certificate_type_get(
2026
session._c_object)
840
2027
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
841
2028
# ...do the normal thing
842
2029
return session.peer_certificate
845
2032
.gnutls_certificate_get_peers
846
2033
(session._c_object, ctypes.byref(list_size)))
847
2034
if not bool(cert_list) and list_size.value != 0:
848
raise gnutls.errors.GNUTLSError(u"error getting peer"
849
u" certificate")
2035
raise gnutls.errors.GNUTLSError("error getting peer"
2036
" certificate")
850
2037
if list_size.value == 0:
851
2038
return None
852
2039
cert = cert_list[0]
856
2043
def fingerprint(openpgp):
857
2044
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
858
2045
# New GnuTLS "datum" with the OpenPGP public key
859
datum = (gnutls.library.types
860
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
861
ctypes.POINTER
862
(ctypes.c_ubyte)),
863
ctypes.c_uint(len(openpgp))))
2046
datum = gnutls.library.types.gnutls_datum_t(
2047
ctypes.cast(ctypes.c_char_p(openpgp),
2048
ctypes.POINTER(ctypes.c_ubyte)),
2049
ctypes.c_uint(len(openpgp)))
864
2050
# New empty GnuTLS certificate
865
2051
crt = gnutls.library.types.gnutls_openpgp_crt_t()
866
(gnutls.library.functions
867
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2052
gnutls.library.functions.gnutls_openpgp_crt_init(
2053
ctypes.byref(crt))
868
2054
# Import the OpenPGP public key into the certificate
869
(gnutls.library.functions
870
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
871
gnutls.library.constants
872
.GNUTLS_OPENPGP_FMT_RAW))
2055
gnutls.library.functions.gnutls_openpgp_crt_import(
2056
crt, ctypes.byref(datum),
2057
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
873
2058
# Verify the self signature in the key
874
2059
crtverify = ctypes.c_uint()
875
(gnutls.library.functions
876
.gnutls_openpgp_crt_verify_self(crt, 0,
877
ctypes.byref(crtverify)))
2060
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2061
crt, 0, ctypes.byref(crtverify))
878
2062
if crtverify.value != 0:
879
2063
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
880
raise (gnutls.errors.CertificateSecurityError
881
(u"Verify failed"))
2064
raise gnutls.errors.CertificateSecurityError(
2065
"Verify failed")
882
2066
# New buffer for the fingerprint
883
2067
buf = ctypes.create_string_buffer(20)
884
2068
buf_len = ctypes.c_size_t()
885
2069
# Get the fingerprint from the certificate into the buffer
886
(gnutls.library.functions
887
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
888
ctypes.byref(buf_len)))
2070
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2071
crt, ctypes.byref(buf), ctypes.byref(buf_len))
889
2072
# Deinit the certificate
890
2073
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
891
2074
# Convert the buffer to a Python bytestring
892
2075
fpr = ctypes.string_at(buf, buf_len.value)
893
2076
# Convert the bytestring to hexadecimal notation
894
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2077
hex_fpr = binascii.hexlify(fpr).upper()
895
2078
return hex_fpr
896
2079
897
2080
898
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
899
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
2081
class MultiprocessingMixIn(object):
2082
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2083
2084
def sub_process_main(self, request, address):
2085
try:
2086
self.finish_request(request, address)
2087
except Exception:
2088
self.handle_error(request, address)
2089
self.close_request(request)
2090
2091
def process_request(self, request, address):
2092
"""Start a new process to process the request."""
2093
proc = multiprocessing.Process(target = self.sub_process_main,
2094
args = (request, address))
2095
proc.start()
2096
return proc
2097
2098
2099
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2100
""" adds a pipe to the MixIn """
2101
900
2102
def process_request(self, request, client_address):
901
2103
"""Overrides and wraps the original process_request().
902
2104
903
This function creates a new pipe in self.pipe
2105
This function creates a new pipe in self.pipe
904
2106
"""
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
907
self).process_request(request, client_address)
908
os.close(self.pipe[1]) # close write end
909
self.add_pipe(self.pipe[0])
910
def add_pipe(self, pipe):
2107
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2108
2109
proc = MultiprocessingMixIn.process_request(self, request,
2110
client_address)
2111
self.child_pipe.close()
2112
self.add_pipe(parent_pipe, proc)
2113
2114
def add_pipe(self, parent_pipe, proc):
911
2115
"""Dummy function; override as necessary"""
912
os.close(pipe)
913
914
915
class IPv6_TCPServer(ForkingMixInWithPipe,
2116
raise NotImplementedError()
2117
2118
2119
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
916
2120
socketserver.TCPServer, object):
917
2121
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
918
2122
921
2125
interface: None or a network interface name (string)
922
2126
use_ipv6: Boolean; to use IPv6 or not
923
2127
"""
2128
924
2129
def __init__(self, server_address, RequestHandlerClass,
925
interface=None, use_ipv6=True):
2130
interface=None,
2131
use_ipv6=True,
2132
socketfd=None):
2133
"""If socketfd is set, use that file descriptor instead of
2134
creating a new one with socket.socket().
2135
"""
926
2136
self.interface = interface
927
2137
if use_ipv6:
928
2138
self.address_family = socket.AF_INET6
2139
if socketfd is not None:
2140
# Save the file descriptor
2141
self.socketfd = socketfd
2142
# Save the original socket.socket() function
2143
self.socket_socket = socket.socket
2144
# To implement --socket, we monkey patch socket.socket.
2145
#
2146
# (When socketserver.TCPServer is a new-style class, we
2147
# could make self.socket into a property instead of monkey
2148
# patching socket.socket.)
2149
#
2150
# Create a one-time-only replacement for socket.socket()
2151
@functools.wraps(socket.socket)
2152
def socket_wrapper(*args, **kwargs):
2153
# Restore original function so subsequent calls are
2154
# not affected.
2155
socket.socket = self.socket_socket
2156
del self.socket_socket
2157
# This time only, return a new socket object from the
2158
# saved file descriptor.
2159
return socket.fromfd(self.socketfd, *args, **kwargs)
2160
# Replace socket.socket() function with wrapper
2161
socket.socket = socket_wrapper
2162
# The socketserver.TCPServer.__init__ will call
2163
# socket.socket(), which might be our replacement,
2164
# socket_wrapper(), if socketfd was set.
929
2165
socketserver.TCPServer.__init__(self, server_address,
930
2166
RequestHandlerClass)
2167
931
2168
def server_bind(self):
932
2169
"""This overrides the normal server_bind() function
933
2170
to bind to an interface if one was specified, and also NOT to
934
2171
bind to an address or port if they were not specified."""
935
2172
if self.interface is not None:
936
2173
if SO_BINDTODEVICE is None:
937
logger.error(u"SO_BINDTODEVICE does not exist;"
938
u" cannot bind to interface %s",
2174
logger.error("SO_BINDTODEVICE does not exist;"
2175
" cannot bind to interface %s",
939
2176
self.interface)
940
2177
else:
941
2178
try:
942
self.socket.setsockopt(socket.SOL_SOCKET,
943
SO_BINDTODEVICE,
944
str(self.interface
945
+ u'\0'))
946
except socket.error, error:
947
if error[0] == errno.EPERM:
948
logger.error(u"No permission to"
949
u" bind to interface %s",
950
self.interface)
951
elif error[0] == errno.ENOPROTOOPT:
952
logger.error(u"SO_BINDTODEVICE not available;"
953
u" cannot bind to interface %s",
954
self.interface)
2179
self.socket.setsockopt(
2180
socket.SOL_SOCKET, SO_BINDTODEVICE,
2181
(self.interface + "\0").encode("utf-8"))
2182
except socket.error as error:
2183
if error.errno == errno.EPERM:
2184
logger.error("No permission to bind to"
2185
" interface %s", self.interface)
2186
elif error.errno == errno.ENOPROTOOPT:
2187
logger.error("SO_BINDTODEVICE not available;"
2188
" cannot bind to interface %s",
2189
self.interface)
2190
elif error.errno == errno.ENODEV:
2191
logger.error("Interface %s does not exist,"
2192
" cannot bind", self.interface)
955
2193
else:
956
2194
raise
957
2195
# Only bind(2) the socket if we really need to.
958
2196
if self.server_address[0] or self.server_address[1]:
959
2197
if not self.server_address[0]:
960
2198
if self.address_family == socket.AF_INET6:
961
any_address = u"::" # in6addr_any
2199
any_address = "::" # in6addr_any
962
2200
else:
963
any_address = socket.INADDR_ANY
2201
any_address = "0.0.0.0" # INADDR_ANY
964
2202
self.server_address = (any_address,
965
2203
self.server_address[1])
966
2204
elif not self.server_address[1]:
967
self.server_address = (self.server_address[0],
968
0)
2205
self.server_address = (self.server_address[0], 0)
969
2206
# if self.interface:
970
2207
# self.server_address = (self.server_address[0],
971
2208
# 0, # port
982
2219
clients: set of Client objects
983
2220
gnutls_priority GnuTLS priority string
984
2221
use_dbus: Boolean; to emit D-Bus signals or not
985
clients: set of Client objects
986
gnutls_priority GnuTLS priority string
987
use_dbus: Boolean; to emit D-Bus signals or not
988
2222
989
2223
Assumes a gobject.MainLoop event loop.
990
2224
"""
2225
991
2226
def __init__(self, server_address, RequestHandlerClass,
992
interface=None, use_ipv6=True, clients=None,
993
gnutls_priority=None, use_dbus=True):
2227
interface=None,
2228
use_ipv6=True,
2229
clients=None,
2230
gnutls_priority=None,
2231
use_dbus=True,
2232
socketfd=None):
994
2233
self.enabled = False
995
2234
self.clients = clients
996
2235
if self.clients is None:
997
self.clients = set()
2236
self.clients = {}
998
2237
self.use_dbus = use_dbus
999
2238
self.gnutls_priority = gnutls_priority
1000
2239
IPv6_TCPServer.__init__(self, server_address,
1001
2240
RequestHandlerClass,
1002
2241
interface = interface,
1003
use_ipv6 = use_ipv6)
2242
use_ipv6 = use_ipv6,
2243
socketfd = socketfd)
2244
1004
2245
def server_activate(self):
1005
2246
if self.enabled:
1006
2247
return socketserver.TCPServer.server_activate(self)
2248
1007
2249
def enable(self):
1008
2250
self.enabled = True
1009
def add_pipe(self, pipe):
2251
2252
def add_pipe(self, parent_pipe, proc):
1010
2253
# Call "handle_ipc" for both data and EOF events
1011
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1012
self.handle_ipc)
1013
def handle_ipc(self, source, condition, file_objects={}):
1014
condition_names = {
1015
gobject.IO_IN: u"IN", # There is data to read.
1016
gobject.IO_OUT: u"OUT", # Data can be written (without
1017
# blocking).
1018
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1019
gobject.IO_ERR: u"ERR", # Error condition.
1020
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1021
# broken, usually for pipes and
1022
# sockets).
1023
}
1024
conditions_string = ' | '.join(name
1025
for cond, name in
1026
condition_names.iteritems()
1027
if cond & condition)
1028
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1029
conditions_string)
1030
1031
# Turn the pipe file descriptor into a Python file object
1032
if source not in file_objects:
1033
file_objects[source] = os.fdopen(source, u"r", 1)
1034
1035
# Read a line from the file object
1036
cmdline = file_objects[source].readline()
1037
if not cmdline: # Empty line means end of file
1038
# close the IPC pipe
1039
file_objects[source].close()
1040
del file_objects[source]
1041
1042
# Stop calling this function
1043
return False
1044
1045
logger.debug(u"IPC command: %r", cmdline)
1046
1047
# Parse and act on command
1048
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1049
1050
if cmd == u"NOTFOUND":
1051
logger.warning(u"Client not found for fingerprint: %s",
1052
args)
1053
if self.use_dbus:
1054
# Emit D-Bus signal
1055
mandos_dbus_service.ClientNotFound(args)
1056
elif cmd == u"INVALID":
1057
for client in self.clients:
1058
if client.name == args:
1059
logger.warning(u"Client %s is invalid", args)
1060
if self.use_dbus:
1061
# Emit D-Bus signal
1062
client.Rejected()
1063
break
1064
else:
1065
logger.error(u"Unknown client %s is invalid", args)
1066
elif cmd == u"SENDING":
1067
for client in self.clients:
1068
if client.name == args:
1069
logger.info(u"Sending secret to %s", client.name)
1070
client.checked_ok()
1071
if self.use_dbus:
1072
# Emit D-Bus signal
1073
client.ReceivedSecret()
1074
break
1075
else:
1076
logger.error(u"Sending secret to unknown client %s",
1077
args)
2254
gobject.io_add_watch(
2255
parent_pipe.fileno(),
2256
gobject.IO_IN | gobject.IO_HUP,
2257
functools.partial(self.handle_ipc,
2258
parent_pipe = parent_pipe,
2259
proc = proc))
2260
2261
def handle_ipc(self, source, condition,
2262
parent_pipe=None,
2263
proc = None,
2264
client_object=None):
2265
# error, or the other end of multiprocessing.Pipe has closed
2266
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2267
# Wait for other process to exit
2268
proc.join()
2269
return False
2270
2271
# Read a request from the child
2272
request = parent_pipe.recv()
2273
command = request[0]
2274
2275
if command == 'init':
2276
fpr = request[1]
2277
address = request[2]
2278
2279
for c in self.clients.itervalues():
2280
if c.fingerprint == fpr:
2281
client = c
2282
break
2283
else:
2284
logger.info("Client not found for fingerprint: %s, ad"
2285
"dress: %s", fpr, address)
2286
if self.use_dbus:
2287
# Emit D-Bus signal
2288
mandos_dbus_service.ClientNotFound(fpr,
2289
address[0])
2290
parent_pipe.send(False)
2291
return False
2292
2293
gobject.io_add_watch(
2294
parent_pipe.fileno(),
2295
gobject.IO_IN | gobject.IO_HUP,
2296
functools.partial(self.handle_ipc,
2297
parent_pipe = parent_pipe,
2298
proc = proc,
2299
client_object = client))
2300
parent_pipe.send(True)
2301
# remove the old hook in favor of the new above hook on
2302
# same fileno
2303
return False
2304
if command == 'funcall':
2305
funcname = request[1]
2306
args = request[2]
2307
kwargs = request[3]
2308
2309
parent_pipe.send(('data', getattr(client_object,
2310
funcname)(*args,
2311
**kwargs)))
2312
2313
if command == 'getattr':
2314
attrname = request[1]
2315
if isinstance(client_object.__getattribute__(attrname),
2316
collections.Callable):
2317
parent_pipe.send(('function', ))
2318
else:
2319
parent_pipe.send((
2320
'data', client_object.__getattribute__(attrname)))
2321
2322
if command == 'setattr':
2323
attrname = request[1]
2324
value = request[2]
2325
setattr(client_object, attrname, value)
2326
2327
return True
2328
2329
2330
def rfc3339_duration_to_delta(duration):
2331
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2332
2333
>>> rfc3339_duration_to_delta("P7D")
2334
datetime.timedelta(7)
2335
>>> rfc3339_duration_to_delta("PT60S")
2336
datetime.timedelta(0, 60)
2337
>>> rfc3339_duration_to_delta("PT60M")
2338
datetime.timedelta(0, 3600)
2339
>>> rfc3339_duration_to_delta("PT24H")
2340
datetime.timedelta(1)
2341
>>> rfc3339_duration_to_delta("P1W")
2342
datetime.timedelta(7)
2343
>>> rfc3339_duration_to_delta("PT5M30S")
2344
datetime.timedelta(0, 330)
2345
>>> rfc3339_duration_to_delta("P1DT3M20S")
2346
datetime.timedelta(1, 200)
2347
"""
2348
2349
# Parsing an RFC 3339 duration with regular expressions is not
2350
# possible - there would have to be multiple places for the same
2351
# values, like seconds. The current code, while more esoteric, is
2352
# cleaner without depending on a parsing library. If Python had a
2353
# built-in library for parsing we would use it, but we'd like to
2354
# avoid excessive use of external libraries.
2355
2356
# New type for defining tokens, syntax, and semantics all-in-one
2357
Token = collections.namedtuple("Token", (
2358
"regexp", # To match token; if "value" is not None, must have
2359
# a "group" containing digits
2360
"value", # datetime.timedelta or None
2361
"followers")) # Tokens valid after this token
2362
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2363
# the "duration" ABNF definition in RFC 3339, Appendix A.
2364
token_end = Token(re.compile(r"$"), None, frozenset())
2365
token_second = Token(re.compile(r"(\d+)S"),
2366
datetime.timedelta(seconds=1),
2367
frozenset((token_end, )))
2368
token_minute = Token(re.compile(r"(\d+)M"),
2369
datetime.timedelta(minutes=1),
2370
frozenset((token_second, token_end)))
2371
token_hour = Token(re.compile(r"(\d+)H"),
2372
datetime.timedelta(hours=1),
2373
frozenset((token_minute, token_end)))
2374
token_time = Token(re.compile(r"T"),
2375
None,
2376
frozenset((token_hour, token_minute,
2377
token_second)))
2378
token_day = Token(re.compile(r"(\d+)D"),
2379
datetime.timedelta(days=1),
2380
frozenset((token_time, token_end)))
2381
token_month = Token(re.compile(r"(\d+)M"),
2382
datetime.timedelta(weeks=4),
2383
frozenset((token_day, token_end)))
2384
token_year = Token(re.compile(r"(\d+)Y"),
2385
datetime.timedelta(weeks=52),
2386
frozenset((token_month, token_end)))
2387
token_week = Token(re.compile(r"(\d+)W"),
2388
datetime.timedelta(weeks=1),
2389
frozenset((token_end, )))
2390
token_duration = Token(re.compile(r"P"), None,
2391
frozenset((token_year, token_month,
2392
token_day, token_time,
2393
token_week)))
2394
# Define starting values
2395
value = datetime.timedelta() # Value so far
2396
found_token = None
2397
followers = frozenset((token_duration, )) # Following valid tokens
2398
s = duration # String left to parse
2399
# Loop until end token is found
2400
while found_token is not token_end:
2401
# Search for any currently valid tokens
2402
for token in followers:
2403
match = token.regexp.match(s)
2404
if match is not None:
2405
# Token found
2406
if token.value is not None:
2407
# Value found, parse digits
2408
factor = int(match.group(1), 10)
2409
# Add to value so far
2410
value += factor * token.value
2411
# Strip token from string
2412
s = token.regexp.sub("", s, 1)
2413
# Go to found token
2414
found_token = token
2415
# Set valid next tokens
2416
followers = found_token.followers
2417
break
1078
2418
else:
1079
logger.error(u"Unknown IPC command: %r", cmdline)
1080
1081
# Keep calling this function
1082
return True
2419
# No currently valid tokens were found
2420
raise ValueError("Invalid RFC 3339 duration: {!r}"
2421
.format(duration))
2422
# End token found
2423
return value
1083
2424
1084
2425
1085
2426
def string_to_delta(interval):
1086
2427
"""Parse a string and return a datetime.timedelta
1087
2428
1088
>>> string_to_delta(u'7d')
2429
>>> string_to_delta('7d')
1089
2430
datetime.timedelta(7)
1090
>>> string_to_delta(u'60s')
2431
>>> string_to_delta('60s')
1091
2432
datetime.timedelta(0, 60)
1092
>>> string_to_delta(u'60m')
2433
>>> string_to_delta('60m')
1093
2434
datetime.timedelta(0, 3600)
1094
>>> string_to_delta(u'24h')
2435
>>> string_to_delta('24h')
1095
2436
datetime.timedelta(1)
1096
>>> string_to_delta(u'1w')
2437
>>> string_to_delta('1w')
1097
2438
datetime.timedelta(7)
1098
>>> string_to_delta(u'5m 30s')
2439
>>> string_to_delta('5m 30s')
1099
2440
datetime.timedelta(0, 330)
1100
2441
"""
2442
2443
try:
2444
return rfc3339_duration_to_delta(interval)
2445
except ValueError:
2446
pass
2447
1101
2448
timevalue = datetime.timedelta(0)
1102
2449
for s in interval.split():
1103
2450
try:
1104
suffix = unicode(s[-1])
2451
suffix = s[-1]
1105
2452
value = int(s[:-1])
1106
if suffix == u"d":
2453
if suffix == "d":
1107
2454
delta = datetime.timedelta(value)
1108
elif suffix == u"s":
2455
elif suffix == "s":
1109
2456
delta = datetime.timedelta(0, value)
1110
elif suffix == u"m":
2457
elif suffix == "m":
1111
2458
delta = datetime.timedelta(0, 0, 0, 0, value)
1112
elif suffix == u"h":
2459
elif suffix == "h":
1113
2460
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1114
elif suffix == u"w":
2461
elif suffix == "w":
1115
2462
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1116
2463
else:
1117
raise ValueError
1118
except (ValueError, IndexError):
1119
raise ValueError
2464
raise ValueError("Unknown suffix {!r}".format(suffix))
2465
except IndexError as e:
2466
raise ValueError(*(e.args))
1120
2467
timevalue += delta
1121
2468
return timevalue
1122
2469
1123
2470
1124
def if_nametoindex(interface):
1125
"""Call the C function if_nametoindex(), or equivalent
1126
1127
Note: This function cannot accept a unicode string."""
1128
global if_nametoindex
1129
try:
1130
if_nametoindex = (ctypes.cdll.LoadLibrary
1131
(ctypes.util.find_library(u"c"))
1132
.if_nametoindex)
1133
except (OSError, AttributeError):
1134
logger.warning(u"Doing if_nametoindex the hard way")
1135
def if_nametoindex(interface):
1136
"Get an interface index the hard way, i.e. using fcntl()"
1137
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1138
with closing(socket.socket()) as s:
1139
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1140
struct.pack(str(u"16s16x"),
1141
interface))
1142
interface_index = struct.unpack(str(u"I"),
1143
ifreq[16:20])[0]
1144
return interface_index
1145
return if_nametoindex(interface)
1146
1147
1148
2471
def daemon(nochdir = False, noclose = False):
1149
2472
"""See daemon(3). Standard BSD Unix function.
1150
2473
1153
2476
sys.exit()
1154
2477
os.setsid()
1155
2478
if not nochdir:
1156
os.chdir(u"/")
2479
os.chdir("/")
1157
2480
if os.fork():
1158
2481
sys.exit()
1159
2482
if not noclose:
1160
2483
# Close all standard open file descriptors
1161
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2484
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1162
2485
if not stat.S_ISCHR(os.fstat(null).st_mode):
1163
2486
raise OSError(errno.ENODEV,
1164
u"/dev/null not a character device")
2487
"{} not a character device"
2488
.format(os.devnull))
1165
2489
os.dup2(null, sys.stdin.fileno())
1166
2490
os.dup2(null, sys.stdout.fileno())
1167
2491
os.dup2(null, sys.stderr.fileno())
1171
2495
1172
2496
def main():
1173
2497
1174
######################################################################
2498
##################################################################
1175
2499
# Parsing of options, both command line and config file
1176
2500
1177
parser = optparse.OptionParser(version = "%%prog %s" % version)
1178
parser.add_option("-i", u"--interface", type=u"string",
1179
metavar="IF", help=u"Bind to interface IF")
1180
parser.add_option("-a", u"--address", type=u"string",
1181
help=u"Address to listen for requests on")
1182
parser.add_option("-p", u"--port", type=u"int",
1183
help=u"Port number to receive requests on")
1184
parser.add_option("--check", action=u"store_true",
1185
help=u"Run self-test")
1186
parser.add_option("--debug", action=u"store_true",
1187
help=u"Debug mode; run in foreground and log to"
1188
u" terminal")
1189
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1190
u" priority string (see GnuTLS documentation)")
1191
parser.add_option("--servicename", type=u"string",
1192
metavar=u"NAME", help=u"Zeroconf service name")
1193
parser.add_option("--configdir", type=u"string",
1194
default=u"/etc/mandos", metavar=u"DIR",
1195
help=u"Directory to search for configuration"
1196
u" files")
1197
parser.add_option("--no-dbus", action=u"store_false",
1198
dest=u"use_dbus", help=u"Do not provide D-Bus"
1199
u" system bus interface")
1200
parser.add_option("--no-ipv6", action=u"store_false",
1201
dest=u"use_ipv6", help=u"Do not use IPv6")
1202
options = parser.parse_args()[0]
2501
parser = argparse.ArgumentParser()
2502
parser.add_argument("-v", "--version", action="version",
2503
version = "%(prog)s {}".format(version),
2504
help="show version number and exit")
2505
parser.add_argument("-i", "--interface", metavar="IF",
2506
help="Bind to interface IF")
2507
parser.add_argument("-a", "--address",
2508
help="Address to listen for requests on")
2509
parser.add_argument("-p", "--port", type=int,
2510
help="Port number to receive requests on")
2511
parser.add_argument("--check", action="store_true",
2512
help="Run self-test")
2513
parser.add_argument("--debug", action="store_true",
2514
help="Debug mode; run in foreground and log"
2515
" to terminal", default=None)
2516
parser.add_argument("--debuglevel", metavar="LEVEL",
2517
help="Debug level for stdout output")
2518
parser.add_argument("--priority", help="GnuTLS"
2519
" priority string (see GnuTLS documentation)")
2520
parser.add_argument("--servicename",
2521
metavar="NAME", help="Zeroconf service name")
2522
parser.add_argument("--configdir",
2523
default="/etc/mandos", metavar="DIR",
2524
help="Directory to search for configuration"
2525
" files")
2526
parser.add_argument("--no-dbus", action="store_false",
2527
dest="use_dbus", help="Do not provide D-Bus"
2528
" system bus interface", default=None)
2529
parser.add_argument("--no-ipv6", action="store_false",
2530
dest="use_ipv6", help="Do not use IPv6",
2531
default=None)
2532
parser.add_argument("--no-restore", action="store_false",
2533
dest="restore", help="Do not restore stored"
2534
" state", default=None)
2535
parser.add_argument("--socket", type=int,
2536
help="Specify a file descriptor to a network"
2537
" socket to use instead of creating one")
2538
parser.add_argument("--statedir", metavar="DIR",
2539
help="Directory to save/restore state in")
2540
parser.add_argument("--foreground", action="store_true",
2541
help="Run in foreground", default=None)
2542
parser.add_argument("--no-zeroconf", action="store_false",
2543
dest="zeroconf", help="Do not use Zeroconf",
2544
default=None)
2545
2546
options = parser.parse_args()
1203
2547
1204
2548
if options.check:
1205
2549
import doctest
1206
doctest.testmod()
1207
sys.exit()
2550
fail_count, test_count = doctest.testmod()
2551
sys.exit(os.EX_OK if fail_count == 0 else 1)
1208
2552
1209
2553
# Default values for config file for server-global settings
1210
server_defaults = { u"interface": u"",
1211
u"address": u"",
1212
u"port": u"",
1213
u"debug": u"False",
1214
u"priority":
1215
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1216
u"servicename": u"Mandos",
1217
u"use_dbus": u"True",
1218
u"use_ipv6": u"True",
1219
}
2554
server_defaults = { "interface": "",
2555
"address": "",
2556
"port": "",
2557
"debug": "False",
2558
"priority":
2559
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2560
":+SIGN-DSA-SHA256",
2561
"servicename": "Mandos",
2562
"use_dbus": "True",
2563
"use_ipv6": "True",
2564
"debuglevel": "",
2565
"restore": "True",
2566
"socket": "",
2567
"statedir": "/var/lib/mandos",
2568
"foreground": "False",
2569
"zeroconf": "True",
2570
}
1220
2571
1221
2572
# Parse config file for server-global settings
1222
2573
server_config = configparser.SafeConfigParser(server_defaults)
1223
2574
del server_defaults
1224
server_config.read(os.path.join(options.configdir,
1225
u"mandos.conf"))
2575
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1226
2576
# Convert the SafeConfigParser object to a dict
1227
2577
server_settings = server_config.defaults()
1228
2578
# Use the appropriate methods on the non-string config options
1229
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1230
server_settings[option] = server_config.getboolean(u"DEFAULT",
2579
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2580
server_settings[option] = server_config.getboolean("DEFAULT",
1231
2581
option)
1232
2582
if server_settings["port"]:
1233
server_settings["port"] = server_config.getint(u"DEFAULT",
1234
u"port")
2583
server_settings["port"] = server_config.getint("DEFAULT",
2584
"port")
2585
if server_settings["socket"]:
2586
server_settings["socket"] = server_config.getint("DEFAULT",
2587
"socket")
2588
# Later, stdin will, and stdout and stderr might, be dup'ed
2589
# over with an opened os.devnull. But we don't want this to
2590
# happen with a supplied network socket.
2591
if 0 <= server_settings["socket"] <= 2:
2592
server_settings["socket"] = os.dup(server_settings
2593
["socket"])
1235
2594
del server_config
1236
2595
1237
2596
# Override the settings from the config file with command line
1238
2597
# options, if set.
1239
for option in (u"interface", u"address", u"port", u"debug",
1240
u"priority", u"servicename", u"configdir",
1241
u"use_dbus", u"use_ipv6"):
2598
for option in ("interface", "address", "port", "debug",
2599
"priority", "servicename", "configdir", "use_dbus",
2600
"use_ipv6", "debuglevel", "restore", "statedir",
2601
"socket", "foreground", "zeroconf"):
1242
2602
value = getattr(options, option)
1243
2603
if value is not None:
1244
2604
server_settings[option] = value
1245
2605
del options
1246
2606
# Force all strings to be unicode
1247
2607
for option in server_settings.keys():
1248
if type(server_settings[option]) is str:
1249
server_settings[option] = unicode(server_settings[option])
2608
if isinstance(server_settings[option], bytes):
2609
server_settings[option] = (server_settings[option]
2610
.decode("utf-8"))
2611
# Force all boolean options to be boolean
2612
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2613
"foreground", "zeroconf"):
2614
server_settings[option] = bool(server_settings[option])
2615
# Debug implies foreground
2616
if server_settings["debug"]:
2617
server_settings["foreground"] = True
1250
2618
# Now we have our good server settings in "server_settings"
1251
2619
1252
2620
##################################################################
1253
2621
2622
if (not server_settings["zeroconf"]
2623
and not (server_settings["port"]
2624
or server_settings["socket"] != "")):
2625
parser.error("Needs port or socket to work without Zeroconf")
2626
1254
2627
# For convenience
1255
debug = server_settings[u"debug"]
1256
use_dbus = server_settings[u"use_dbus"]
1257
use_ipv6 = server_settings[u"use_ipv6"]
1258
1259
if not debug:
1260
syslogger.setLevel(logging.WARNING)
1261
console.setLevel(logging.WARNING)
1262
1263
if server_settings[u"servicename"] != u"Mandos":
1264
syslogger.setFormatter(logging.Formatter
1265
(u'Mandos (%s) [%%(process)d]:'
1266
u' %%(levelname)s: %%(message)s'
1267
% server_settings[u"servicename"]))
2628
debug = server_settings["debug"]
2629
debuglevel = server_settings["debuglevel"]
2630
use_dbus = server_settings["use_dbus"]
2631
use_ipv6 = server_settings["use_ipv6"]
2632
stored_state_path = os.path.join(server_settings["statedir"],
2633
stored_state_file)
2634
foreground = server_settings["foreground"]
2635
zeroconf = server_settings["zeroconf"]
2636
2637
if debug:
2638
initlogger(debug, logging.DEBUG)
2639
else:
2640
if not debuglevel:
2641
initlogger(debug)
2642
else:
2643
level = getattr(logging, debuglevel.upper())
2644
initlogger(debug, level)
2645
2646
if server_settings["servicename"] != "Mandos":
2647
syslogger.setFormatter(
2648
logging.Formatter('Mandos ({}) [%(process)d]:'
2649
' %(levelname)s: %(message)s'.format(
2650
server_settings["servicename"])))
1268
2651
1269
2652
# Parse config file with clients
1270
client_defaults = { u"timeout": u"1h",
1271
u"interval": u"5m",
1272
u"checker": u"fping -q -- %%(host)s",
1273
u"host": u"",
1274
}
1275
client_config = configparser.SafeConfigParser(client_defaults)
1276
client_config.read(os.path.join(server_settings[u"configdir"],
1277
u"clients.conf"))
2653
client_config = configparser.SafeConfigParser(Client
2654
.client_defaults)
2655
client_config.read(os.path.join(server_settings["configdir"],
2656
"clients.conf"))
1278
2657
1279
2658
global mandos_dbus_service
1280
2659
mandos_dbus_service = None
1281
2660
1282
tcp_server = MandosServer((server_settings[u"address"],
1283
server_settings[u"port"]),
1284
ClientHandler,
1285
interface=server_settings[u"interface"],
1286
use_ipv6=use_ipv6,
1287
gnutls_priority=
1288
server_settings[u"priority"],
1289
use_dbus=use_dbus)
1290
pidfilename = u"/var/run/mandos.pid"
1291
try:
1292
pidfile = open(pidfilename, u"w")
1293
except IOError:
1294
logger.error(u"Could not open file %r", pidfilename)
2661
socketfd = None
2662
if server_settings["socket"] != "":
2663
socketfd = server_settings["socket"]
2664
tcp_server = MandosServer(
2665
(server_settings["address"], server_settings["port"]),
2666
ClientHandler,
2667
interface=(server_settings["interface"] or None),
2668
use_ipv6=use_ipv6,
2669
gnutls_priority=server_settings["priority"],
2670
use_dbus=use_dbus,
2671
socketfd=socketfd)
2672
if not foreground:
2673
pidfilename = "/run/mandos.pid"
2674
if not os.path.isdir("/run/."):
2675
pidfilename = "/var/run/mandos.pid"
2676
pidfile = None
2677
try:
2678
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2679
except IOError as e:
2680
logger.error("Could not open file %r", pidfilename,
2681
exc_info=e)
1295
2682
1296
try:
1297
uid = pwd.getpwnam(u"_mandos").pw_uid
1298
gid = pwd.getpwnam(u"_mandos").pw_gid
1299
except KeyError:
2683
for name in ("_mandos", "mandos", "nobody"):
1300
2684
try:
1301
uid = pwd.getpwnam(u"mandos").pw_uid
1302
gid = pwd.getpwnam(u"mandos").pw_gid
2685
uid = pwd.getpwnam(name).pw_uid
2686
gid = pwd.getpwnam(name).pw_gid
2687
break
1303
2688
except KeyError:
1304
try:
1305
uid = pwd.getpwnam(u"nobody").pw_uid
1306
gid = pwd.getpwnam(u"nobody").pw_gid
1307
except KeyError:
1308
uid = 65534
1309
gid = 65534
2689
continue
2690
else:
2691
uid = 65534
2692
gid = 65534
1310
2693
try:
1311
2694
os.setgid(gid)
1312
2695
os.setuid(uid)
1313
except OSError, error:
1314
if error[0] != errno.EPERM:
1315
raise error
2696
except OSError as error:
2697
if error.errno != errno.EPERM:
2698
raise
1316
2699
1317
# Enable all possible GnuTLS debugging
1318
2700
if debug:
2701
# Enable all possible GnuTLS debugging
2702
1319
2703
# "Use a log level over 10 to enable all debugging options."
1320
2704
# - GnuTLS manual
1321
2705
gnutls.library.functions.gnutls_global_set_log_level(11)
1322
2706
1323
2707
@gnutls.library.types.gnutls_log_func
1324
2708
def debug_gnutls(level, string):
1325
logger.debug(u"GnuTLS: %s", string[:-1])
1326
1327
(gnutls.library.functions
1328
.gnutls_global_set_log_function(debug_gnutls))
2709
logger.debug("GnuTLS: %s", string[:-1])
2710
2711
gnutls.library.functions.gnutls_global_set_log_function(
2712
debug_gnutls)
2713
2714
# Redirect stdin so all checkers get /dev/null
2715
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2716
os.dup2(null, sys.stdin.fileno())
2717
if null > 2:
2718
os.close(null)
2719
2720
# Need to fork before connecting to D-Bus
2721
if not foreground:
2722
# Close all input and output, do double fork, etc.
2723
daemon()
2724
2725
# multiprocessing will use threads, so before we use gobject we
2726
# need to inform gobject that threads will be used.
2727
gobject.threads_init()
1329
2728
1330
2729
global main_loop
1331
2730
# From the Avahi example code
1332
DBusGMainLoop(set_as_default=True )
2731
DBusGMainLoop(set_as_default=True)
1333
2732
main_loop = gobject.MainLoop()
1334
2733
bus = dbus.SystemBus()
1335
2734
# End of Avahi example code
1336
2735
if use_dbus:
1337
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1338
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1339
service = AvahiService(name = server_settings[u"servicename"],
1340
servicetype = u"_mandos._tcp",
1341
protocol = protocol, bus = bus)
1342
if server_settings["interface"]:
1343
service.interface = (if_nametoindex
1344
(str(server_settings[u"interface"])))
2736
try:
2737
bus_name = dbus.service.BusName("se.recompile.Mandos",
2738
bus,
2739
do_not_queue=True)
2740
old_bus_name = dbus.service.BusName(
2741
"se.bsnet.fukt.Mandos", bus,
2742
do_not_queue=True)
2743
except dbus.exceptions.DBusException as e:
2744
logger.error("Disabling D-Bus:", exc_info=e)
2745
use_dbus = False
2746
server_settings["use_dbus"] = False
2747
tcp_server.use_dbus = False
2748
if zeroconf:
2749
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2750
service = AvahiServiceToSyslog(
2751
name = server_settings["servicename"],
2752
servicetype = "_mandos._tcp",
2753
protocol = protocol,
2754
bus = bus)
2755
if server_settings["interface"]:
2756
service.interface = if_nametoindex(
2757
server_settings["interface"].encode("utf-8"))
2758
2759
global multiprocessing_manager
2760
multiprocessing_manager = multiprocessing.Manager()
1345
2761
1346
2762
client_class = Client
1347
2763
if use_dbus:
1348
2764
client_class = functools.partial(ClientDBus, bus = bus)
1349
tcp_server.clients.update(set(
1350
client_class(name = section,
1351
config= dict(client_config.items(section)))
1352
for section in client_config.sections()))
2765
2766
client_settings = Client.config_parser(client_config)
2767
old_client_settings = {}
2768
clients_data = {}
2769
2770
# This is used to redirect stdout and stderr for checker processes
2771
global wnull
2772
wnull = open(os.devnull, "w") # A writable /dev/null
2773
# Only used if server is running in foreground but not in debug
2774
# mode
2775
if debug or not foreground:
2776
wnull.close()
2777
2778
# Get client data and settings from last running state.
2779
if server_settings["restore"]:
2780
try:
2781
with open(stored_state_path, "rb") as stored_state:
2782
clients_data, old_client_settings = pickle.load(
2783
stored_state)
2784
os.remove(stored_state_path)
2785
except IOError as e:
2786
if e.errno == errno.ENOENT:
2787
logger.warning("Could not load persistent state:"
2788
" {}".format(os.strerror(e.errno)))
2789
else:
2790
logger.critical("Could not load persistent state:",
2791
exc_info=e)
2792
raise
2793
except EOFError as e:
2794
logger.warning("Could not load persistent state: "
2795
"EOFError:",
2796
exc_info=e)
2797
2798
with PGPEngine() as pgp:
2799
for client_name, client in clients_data.items():
2800
# Skip removed clients
2801
if client_name not in client_settings:
2802
continue
2803
2804
# Decide which value to use after restoring saved state.
2805
# We have three different values: Old config file,
2806
# new config file, and saved state.
2807
# New config value takes precedence if it differs from old
2808
# config value, otherwise use saved state.
2809
for name, value in client_settings[client_name].items():
2810
try:
2811
# For each value in new config, check if it
2812
# differs from the old config value (Except for
2813
# the "secret" attribute)
2814
if (name != "secret"
2815
and (value !=
2816
old_client_settings[client_name][name])):
2817
client[name] = value
2818
except KeyError:
2819
pass
2820
2821
# Clients who has passed its expire date can still be
2822
# enabled if its last checker was successful. A Client
2823
# whose checker succeeded before we stored its state is
2824
# assumed to have successfully run all checkers during
2825
# downtime.
2826
if client["enabled"]:
2827
if datetime.datetime.utcnow() >= client["expires"]:
2828
if not client["last_checked_ok"]:
2829
logger.warning(
2830
"disabling client {} - Client never "
2831
"performed a successful checker".format(
2832
client_name))
2833
client["enabled"] = False
2834
elif client["last_checker_status"] != 0:
2835
logger.warning(
2836
"disabling client {} - Client last"
2837
" checker failed with error code"
2838
" {}".format(
2839
client_name,
2840
client["last_checker_status"]))
2841
client["enabled"] = False
2842
else:
2843
client["expires"] = (
2844
datetime.datetime.utcnow()
2845
+ client["timeout"])
2846
logger.debug("Last checker succeeded,"
2847
" keeping {} enabled".format(
2848
client_name))
2849
try:
2850
client["secret"] = pgp.decrypt(
2851
client["encrypted_secret"],
2852
client_settings[client_name]["secret"])
2853
except PGPError:
2854
# If decryption fails, we use secret from new settings
2855
logger.debug("Failed to decrypt {} old secret".format(
2856
client_name))
2857
client["secret"] = (client_settings[client_name]
2858
["secret"])
2859
2860
# Add/remove clients based on new changes made to config
2861
for client_name in (set(old_client_settings)
2862
- set(client_settings)):
2863
del clients_data[client_name]
2864
for client_name in (set(client_settings)
2865
- set(old_client_settings)):
2866
clients_data[client_name] = client_settings[client_name]
2867
2868
# Create all client objects
2869
for client_name, client in clients_data.items():
2870
tcp_server.clients[client_name] = client_class(
2871
name = client_name,
2872
settings = client,
2873
server_settings = server_settings)
2874
1353
2875
if not tcp_server.clients:
1354
logger.warning(u"No clients defined")
1355
1356
if debug:
1357
# Redirect stdin so all checkers get /dev/null
1358
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1359
os.dup2(null, sys.stdin.fileno())
1360
if null > 2:
1361
os.close(null)
1362
else:
1363
# No console logging
1364
logger.removeHandler(console)
1365
# Close all input and output, do double fork, etc.
1366
daemon()
1367
1368
try:
1369
with closing(pidfile):
2876
logger.warning("No clients defined")
2877
2878
if not foreground:
2879
if pidfile is not None:
1370
2880
pid = os.getpid()
1371
pidfile.write(str(pid) + "\n")
2881
try:
2882
with pidfile:
2883
print(pid, file=pidfile)
2884
except IOError:
2885
logger.error("Could not write to file %r with PID %d",
2886
pidfilename, pid)
1372
2887
del pidfile
1373
except IOError:
1374
logger.error(u"Could not write to file %r with PID %d",
1375
pidfilename, pid)
1376
except NameError:
1377
# "pidfile" was never created
1378
pass
1379
del pidfilename
1380
1381
def cleanup():
1382
"Cleanup function; run on exit"
1383
service.cleanup()
1384
1385
while tcp_server.clients:
1386
client = tcp_server.clients.pop()
1387
client.disable_hook = None
1388
client.disable()
1389
1390
atexit.register(cleanup)
1391
1392
if not debug:
1393
signal.signal(signal.SIGINT, signal.SIG_IGN)
2888
del pidfilename
2889
1394
2890
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1395
2891
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1396
2892
1397
2893
if use_dbus:
1398
class MandosDBusService(dbus.service.Object):
2894
2895
@alternate_dbus_interfaces(
2896
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2897
class MandosDBusService(DBusObjectWithObjectManager):
1399
2898
"""A D-Bus proxy object"""
2899
1400
2900
def __init__(self):
1401
dbus.service.Object.__init__(self, bus, u"/")
1402
_interface = u"se.bsnet.fukt.Mandos"
1403
1404
@dbus.service.signal(_interface, signature=u"oa{sv}")
1405
def ClientAdded(self, objpath, properties):
1406
"D-Bus signal"
1407
pass
1408
1409
@dbus.service.signal(_interface, signature=u"s")
1410
def ClientNotFound(self, fingerprint):
1411
"D-Bus signal"
1412
pass
1413
1414
@dbus.service.signal(_interface, signature=u"os")
2901
dbus.service.Object.__init__(self, bus, "/")
2902
2903
_interface = "se.recompile.Mandos"
2904
2905
@dbus.service.signal(_interface, signature="o")
2906
def ClientAdded(self, objpath):
2907
"D-Bus signal"
2908
pass
2909
2910
@dbus.service.signal(_interface, signature="ss")
2911
def ClientNotFound(self, fingerprint, address):
2912
"D-Bus signal"
2913
pass
2914
2915
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2916
"true"})
2917
@dbus.service.signal(_interface, signature="os")
1415
2918
def ClientRemoved(self, objpath, name):
1416
2919
"D-Bus signal"
1417
2920
pass
1418
2921
1419
@dbus.service.method(_interface, out_signature=u"ao")
2922
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2923
"true"})
2924
@dbus.service.method(_interface, out_signature="ao")
1420
2925
def GetAllClients(self):
1421
2926
"D-Bus method"
1422
return dbus.Array(c.dbus_object_path
1423
for c in tcp_server.clients)
2927
return dbus.Array(c.dbus_object_path for c in
2928
tcp_server.clients.itervalues())
1424
2929
2930
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2931
"true"})
1425
2932
@dbus.service.method(_interface,
1426
out_signature=u"a{oa{sv}}")
2933
out_signature="a{oa{sv}}")
1427
2934
def GetAllClientsWithProperties(self):
1428
2935
"D-Bus method"
1429
2936
return dbus.Dictionary(
1430
((c.dbus_object_path, c.GetAllProperties())
1431
for c in tcp_server.clients),
1432
signature=u"oa{sv}")
2937
{ c.dbus_object_path: c.GetAll(
2938
"se.recompile.Mandos.Client")
2939
for c in tcp_server.clients.itervalues() },
2940
signature="oa{sv}")
1433
2941
1434
@dbus.service.method(_interface, in_signature=u"o")
2942
@dbus.service.method(_interface, in_signature="o")
1435
2943
def RemoveClient(self, object_path):
1436
2944
"D-Bus method"
1437
for c in tcp_server.clients:
2945
for c in tcp_server.clients.itervalues():
1438
2946
if c.dbus_object_path == object_path:
1439
tcp_server.clients.remove(c)
2947
del tcp_server.clients[c.name]
1440
2948
c.remove_from_connection()
1441
# Don't signal anything except ClientRemoved
1442
c.disable(signal=False)
1443
# Emit D-Bus signal
1444
self.ClientRemoved(object_path, c.name)
2949
# Don't signal the disabling
2950
c.disable(quiet=True)
2951
# Emit D-Bus signal for removal
2952
self.client_removed_signal(c)
1445
2953
return
1446
raise KeyError
2954
raise KeyError(object_path)
1447
2955
1448
2956
del _interface
2957
2958
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2959
out_signature = "a{oa{sa{sv}}}")
2960
def GetManagedObjects(self):
2961
"""D-Bus method"""
2962
return dbus.Dictionary(
2963
{ client.dbus_object_path:
2964
dbus.Dictionary(
2965
{ interface: client.GetAll(interface)
2966
for interface in
2967
client._get_all_interface_names()})
2968
for client in tcp_server.clients.values()})
2969
2970
def client_added_signal(self, client):
2971
"""Send the new standard signal and the old signal"""
2972
if use_dbus:
2973
# New standard signal
2974
self.InterfacesAdded(
2975
client.dbus_object_path,
2976
dbus.Dictionary(
2977
{ interface: client.GetAll(interface)
2978
for interface in
2979
client._get_all_interface_names()}))
2980
# Old signal
2981
self.ClientAdded(client.dbus_object_path)
2982
2983
def client_removed_signal(self, client):
2984
"""Send the new standard signal and the old signal"""
2985
if use_dbus:
2986
# New standard signal
2987
self.InterfacesRemoved(
2988
client.dbus_object_path,
2989
client._get_all_interface_names())
2990
# Old signal
2991
self.ClientRemoved(client.dbus_object_path,
2992
client.name)
1449
2993
1450
2994
mandos_dbus_service = MandosDBusService()
1451
2995
1452
for client in tcp_server.clients:
2996
def cleanup():
2997
"Cleanup function; run on exit"
2998
if zeroconf:
2999
service.cleanup()
3000
3001
multiprocessing.active_children()
3002
wnull.close()
3003
if not (tcp_server.clients or client_settings):
3004
return
3005
3006
# Store client before exiting. Secrets are encrypted with key
3007
# based on what config file has. If config file is
3008
# removed/edited, old secret will thus be unrecovable.
3009
clients = {}
3010
with PGPEngine() as pgp:
3011
for client in tcp_server.clients.itervalues():
3012
key = client_settings[client.name]["secret"]
3013
client.encrypted_secret = pgp.encrypt(client.secret,
3014
key)
3015
client_dict = {}
3016
3017
# A list of attributes that can not be pickled
3018
# + secret.
3019
exclude = { "bus", "changedstate", "secret",
3020
"checker", "server_settings" }
3021
for name, typ in inspect.getmembers(dbus.service
3022
.Object):
3023
exclude.add(name)
3024
3025
client_dict["encrypted_secret"] = (client
3026
.encrypted_secret)
3027
for attr in client.client_structure:
3028
if attr not in exclude:
3029
client_dict[attr] = getattr(client, attr)
3030
3031
clients[client.name] = client_dict
3032
del client_settings[client.name]["secret"]
3033
3034
try:
3035
with tempfile.NamedTemporaryFile(
3036
mode='wb',
3037
suffix=".pickle",
3038
prefix='clients-',
3039
dir=os.path.dirname(stored_state_path),
3040
delete=False) as stored_state:
3041
pickle.dump((clients, client_settings), stored_state)
3042
tempname = stored_state.name
3043
os.rename(tempname, stored_state_path)
3044
except (IOError, OSError) as e:
3045
if not debug:
3046
try:
3047
os.remove(tempname)
3048
except NameError:
3049
pass
3050
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3051
logger.warning("Could not save persistent state: {}"
3052
.format(os.strerror(e.errno)))
3053
else:
3054
logger.warning("Could not save persistent state:",
3055
exc_info=e)
3056
raise
3057
3058
# Delete all clients, and settings from config
3059
while tcp_server.clients:
3060
name, client = tcp_server.clients.popitem()
3061
if use_dbus:
3062
client.remove_from_connection()
3063
# Don't signal the disabling
3064
client.disable(quiet=True)
3065
# Emit D-Bus signal for removal
3066
if use_dbus:
3067
mandos_dbus_service.client_removed_signal(client)
3068
client_settings.clear()
3069
3070
atexit.register(cleanup)
3071
3072
for client in tcp_server.clients.itervalues():
1453
3073
if use_dbus:
1454
# Emit D-Bus signal
1455
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1456
client.GetAllProperties())
1457
client.enable()
3074
# Emit D-Bus signal for adding
3075
mandos_dbus_service.client_added_signal(client)
3076
# Need to initiate checking of clients
3077
if client.enabled:
3078
client.init_checker()
1458
3079
1459
3080
tcp_server.enable()
1460
3081
tcp_server.server_activate()
1461
3082
1462
3083
# Find out what port we got
1463
service.port = tcp_server.socket.getsockname()[1]
3084
if zeroconf:
3085
service.port = tcp_server.socket.getsockname()[1]
1464
3086
if use_ipv6:
1465
logger.info(u"Now listening on address %r, port %d,"
1466
" flowinfo %d, scope_id %d"
1467
% tcp_server.socket.getsockname())
3087
logger.info("Now listening on address %r, port %d,"
3088
" flowinfo %d, scope_id %d",
3089
*tcp_server.socket.getsockname())
1468
3090
else: # IPv4
1469
logger.info(u"Now listening on address %r, port %d"
1470
% tcp_server.socket.getsockname())
3091
logger.info("Now listening on address %r, port %d",
3092
*tcp_server.socket.getsockname())
1471
3093
1472
3094
#service.interface = tcp_server.socket.getsockname()[3]
1473
3095
1474
3096
try:
1475
# From the Avahi example code
1476
try:
1477
service.activate()
1478
except dbus.exceptions.DBusException, error:
1479
logger.critical(u"DBusException: %s", error)
1480
sys.exit(1)
1481
# End of Avahi example code
3097
if zeroconf:
3098
# From the Avahi example code
3099
try:
3100
service.activate()
3101
except dbus.exceptions.DBusException as error:
3102
logger.critical("D-Bus Exception", exc_info=error)
3103
cleanup()
3104
sys.exit(1)
3105
# End of Avahi example code
1482
3106
1483
3107
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1484
3108
lambda *args, **kwargs:
1485
3109
(tcp_server.handle_request
1486
3110
(*args[2:], **kwargs) or True))
1487
3111
1488
logger.debug(u"Starting main loop")
3112
logger.debug("Starting main loop")
1489
3113
main_loop.run()
1490
except AvahiError, error:
1491
logger.critical(u"AvahiError: %s", error)
3114
except AvahiError as error:
3115
logger.critical("Avahi Error", exc_info=error)
3116
cleanup()
1492
3117
sys.exit(1)
1493
3118
except KeyboardInterrupt:
1494
3119
if debug:
1495
print >> sys.stderr
1496
logger.debug(u"Server received KeyboardInterrupt")
1497
logger.debug(u"Server exiting")
3120
print("", file=sys.stderr)
3121
logger.debug("Server received KeyboardInterrupt")
3122
logger.debug("Server exiting")
3123
# Must run before the D-Bus bus name gets deregistered
3124
cleanup()
3125
1498
3126
1499
3127
if __name__ == '__main__':
1500
3128
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0