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- Committer: Teddy Hogeborn
- Date: 2016-08-26 18:44:21 UTC
- Revision ID: teddy@recompile.se-20160826184421-gjqjgzxy3lupx9n3
Fix bug where mandos server could not find GnuTLS library
* mandos (GnuTLS): Try to find both "gnutls" and variant name
"gnutls-deb0", for a Debian Jessie system which
does not have the package "gnutls28-dev" installed.
* mandos (GnuTLS): Try to find both "gnutls" and variant name
"gnutls-deb0", for a Debian Jessie system which
does not have the package "gnutls28-dev" installed.
- files added:
- bugs.xml
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
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# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
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
16
#
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
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
19
19
# the Free Software Foundation, either version 3 of the License, or
23
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
25
# GNU General Public License for more details.
26
#
26
#
27
27
# You should have received a copy of the GNU General Public License
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
#
31
# Contact the authors at <mandos@recompile.se>.
32
#
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
37
46
import socket
38
import optparse
47
import argparse
39
48
import datetime
40
49
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
48
54
import sys
49
55
import re
50
56
import os
59
65
import struct
60
66
import fcntl
61
67
import functools
62
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
63
72
import multiprocessing
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
64
79
65
80
import dbus
66
81
import dbus.service
67
import gobject
68
import avahi
82
from gi.repository import GLib
69
83
from dbus.mainloop.glib import DBusGMainLoop
70
84
import ctypes
71
85
import ctypes.util
72
86
import xml.dom.minidom
73
87
import inspect
74
88
89
# Try to find the value of SO_BINDTODEVICE:
75
90
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
76
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
94
except AttributeError:
78
95
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
79
98
from IN import SO_BINDTODEVICE
80
99
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.10"
118
stored_state_file = "clients.pickle"
119
120
logger = logging.getLogger()
121
syslogger = None
122
123
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
126
except (OSError, AttributeError):
127
128
def if_nametoindex(interface):
129
"Get an interface index the hard way, i.e. using fcntl()"
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
with contextlib.closing(socket.socket()) as s:
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
135
return interface_index
136
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
def initlogger(debug, level=logging.WARNING):
155
"""init logger and add loglevel"""
156
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
160
address="/dev/log"))
161
syslogger.setFormatter(logging.Formatter
162
('Mandos [%(process)d]: %(levelname)s:'
163
' %(message)s'))
164
logger.addHandler(syslogger)
165
166
if debug:
167
console = logging.StreamHandler()
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
' [%(process)d]:'
170
' %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(console)
173
logger.setLevel(level)
174
175
176
class PGPError(Exception):
177
"""Exception if encryption/decryption fails"""
178
pass
179
180
181
class PGPEngine(object):
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
def __init__(self):
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
199
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
205
def __enter__(self):
206
return self
207
208
def __exit__(self, exc_type, exc_value, traceback):
209
self._cleanup()
210
return False
211
212
def __del__(self):
213
self._cleanup()
214
215
def _cleanup(self):
216
if self.tempdir is not None:
217
# Delete contents of tempdir
218
for root, dirs, files in os.walk(self.tempdir,
219
topdown=False):
220
for filename in files:
221
os.remove(os.path.join(root, filename))
222
for dirname in dirs:
223
os.rmdir(os.path.join(root, dirname))
224
# Remove tempdir
225
os.rmdir(self.tempdir)
226
self.tempdir = None
227
228
def password_encode(self, password):
229
# Passphrase can not be empty and can not contain newlines or
230
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
237
return encoded
238
239
def encrypt(self, data, password):
240
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
243
passfile.write(passphrase)
244
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
246
'--passphrase-file',
247
passfile.name]
248
+ self.gnupgargs,
249
stdin=subprocess.PIPE,
250
stdout=subprocess.PIPE,
251
stderr=subprocess.PIPE)
252
ciphertext, err = proc.communicate(input=data)
253
if proc.returncode != 0:
254
raise PGPError(err)
255
return ciphertext
256
257
def decrypt(self, data, password):
258
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir=self.tempdir) as passfile:
261
passfile.write(passphrase)
262
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
264
'--passphrase-file',
265
passfile.name]
266
+ self.gnupgargs,
267
stdin=subprocess.PIPE,
268
stdout=subprocess.PIPE,
269
stderr=subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input=data)
271
if proc.returncode != 0:
272
raise PGPError(err)
273
return decrypted_plaintext
274
275
276
# Pretend that we have an Avahi module
277
class Avahi(object):
278
"""This isn't so much a class as it is a module-like namespace.
279
It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
def string_array_to_txt_array(self, t):
290
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
298
SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
300
avahi = Avahi()
301
101
302
102
303
class AvahiError(Exception):
103
304
def __init__(self, value, *args, **kwargs):
104
305
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
108
309
109
310
class AvahiServiceError(AvahiError):
110
311
pass
111
312
313
112
314
class AvahiGroupError(AvahiError):
113
315
pass
114
316
115
317
116
318
class AvahiService(object):
117
319
"""An Avahi (Zeroconf) service.
118
320
119
321
Attributes:
120
322
interface: integer; avahi.IF_UNSPEC or an interface index.
121
323
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
324
name: string; Example: 'Mandos'
325
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
125
327
port: integer; what port to announce
126
328
TXT: list of strings; TXT record for the service
127
329
domain: string; Domain to publish on, default to .local if empty.
133
335
server: D-Bus Server
134
336
bus: dbus.SystemBus()
135
337
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
140
350
self.interface = interface
141
351
self.name = name
142
352
self.type = servicetype
150
360
self.group = None # our entry group
151
361
self.server = None
152
362
self.bus = bus
153
def rename(self):
363
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
154
366
"""Derived from the Avahi example code"""
155
367
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
158
370
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
371
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
162
376
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
377
if remove:
378
self.remove()
168
379
try:
169
380
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
381
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
175
391
def remove(self):
176
392
"""Derived from the Avahi example code"""
393
if self.entry_group_state_changed_match is not None:
394
self.entry_group_state_changed_match.remove()
395
self.entry_group_state_changed_match = None
177
396
if self.group is not None:
178
397
self.group.Reset()
398
179
399
def add(self):
180
400
"""Derived from the Avahi example code"""
401
self.remove()
181
402
if self.group is None:
182
403
self.group = dbus.Interface(
183
404
self.bus.get_object(avahi.DBUS_NAME,
184
405
self.server.EntryGroupNew()),
185
406
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
407
self.entry_group_state_changed_match = (
408
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
410
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
411
self.name, self.type)
191
412
self.group.AddService(
192
413
self.interface,
197
418
dbus.UInt16(self.port),
198
419
avahi.string_array_to_txt_array(self.TXT))
199
420
self.group.Commit()
421
200
422
def entry_group_state_changed(self, state, error):
201
423
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
424
logger.debug("Avahi entry group state change: %i", state)
425
204
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
427
logger.debug("Zeroconf service established.")
206
428
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
429
logger.info("Zeroconf service name collision.")
208
430
self.rename()
209
431
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
432
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
214
436
def cleanup(self):
215
437
"""Derived from the Avahi example code"""
216
438
if self.group is not None:
217
self.group.Free()
439
try:
440
self.group.Free()
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
443
pass
218
444
self.group = None
219
def server_state_changed(self, state):
445
self.remove()
446
447
def server_state_changed(self, state, error=None):
220
448
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
449
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
456
if state in bad_states:
457
if bad_states[state] is not None:
458
if error is None:
459
logger.error(bad_states[state])
460
else:
461
logger.error(bad_states[state] + ": %r", error)
462
self.cleanup()
225
463
elif state == avahi.SERVER_RUNNING:
226
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
476
else:
477
if error is None:
478
logger.debug("Unknown state: %r", state)
479
else:
480
logger.debug("Unknown state: %r: %r", state, error)
481
227
482
def activate(self):
228
483
"""Derived from the Avahi example code"""
229
484
if self.server is None:
230
485
self.server = dbus.Interface(
231
486
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
233
489
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
236
492
self.server_state_changed(self.server.GetState())
237
493
238
494
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = AvahiService.rename(self, *args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
502
return ret
503
504
505
# Pretend that we have a GnuTLS module
506
class GnuTLS(object):
507
"""This isn't so much a class as it is a module-like namespace.
508
It is instantiated once, and simulates having a GnuTLS module."""
509
510
library = ctypes.util.find_library("gnutls")
511
if library is None:
512
library = ctypes.util.find_library("gnutls-deb0")
513
_library = ctypes.cdll.LoadLibrary(library)
514
del library
515
_need_version = b"3.3.0"
516
517
def __init__(self):
518
# Need to use class name "GnuTLS" here, since this method is
519
# called before the assignment to the "gnutls" global variable
520
# happens.
521
if GnuTLS.check_version(self._need_version) is None:
522
raise GnuTLS.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
524
525
# Unless otherwise indicated, the constants and types below are
526
# all from the gnutls/gnutls.h C header file.
527
528
# Constants
529
E_SUCCESS = 0
530
E_INTERRUPTED = -52
531
E_AGAIN = -28
532
CRT_OPENPGP = 2
533
CLIENT = 2
534
SHUT_RDWR = 0
535
CRD_CERTIFICATE = 1
536
E_NO_CERTIFICATE_FOUND = -49
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
539
# Types
540
class session_int(ctypes.Structure):
541
_fields_ = []
542
session_t = ctypes.POINTER(session_int)
543
544
class certificate_credentials_st(ctypes.Structure):
545
_fields_ = []
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
549
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
553
554
class openpgp_crt_int(ctypes.Structure):
555
_fields_ = []
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
562
563
# Exceptions
564
class Error(Exception):
565
# We need to use the class name "GnuTLS" here, since this
566
# exception might be raised from within GnuTLS.__init__,
567
# which is called before the assignment to the "gnutls"
568
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
570
# Default usage is by a message string, but if a return
571
# code is passed, convert it to a string with
572
# gnutls.strerror()
573
self.code = code
574
if message is None and code is not None:
575
message = GnuTLS.strerror(code)
576
return super(GnuTLS.Error, self).__init__(
577
message, *args)
578
579
class CertificateSecurityError(Error):
580
pass
581
582
# Classes
583
class Credentials(object):
584
def __init__(self):
585
self._c_object = gnutls.certificate_credentials_t()
586
gnutls.certificate_allocate_credentials(
587
ctypes.byref(self._c_object))
588
self.type = gnutls.CRD_CERTIFICATE
589
590
def __del__(self):
591
gnutls.certificate_free_credentials(self._c_object)
592
593
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
595
self._c_object = gnutls.session_t()
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
gnutls.set_default_priority(self._c_object)
598
gnutls.transport_set_ptr(self._c_object, socket.fileno())
599
gnutls.handshake_set_private_extensions(self._c_object,
600
True)
601
self.socket = socket
602
if credentials is None:
603
credentials = gnutls.Credentials()
604
gnutls.credentials_set(self._c_object, credentials.type,
605
ctypes.cast(credentials._c_object,
606
ctypes.c_void_p))
607
self.credentials = credentials
608
609
def __del__(self):
610
gnutls.deinit(self._c_object)
611
612
def handshake(self):
613
return gnutls.handshake(self._c_object)
614
615
def send(self, data):
616
data = bytes(data)
617
data_len = len(data)
618
while data_len > 0:
619
data_len -= gnutls.record_send(self._c_object,
620
data[-data_len:],
621
data_len)
622
623
def bye(self):
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
625
626
# Error handling functions
627
def _error_code(result):
628
"""A function to raise exceptions on errors, suitable
629
for the 'restype' attribute on ctypes functions"""
630
if result >= 0:
631
return result
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
635
636
def _retry_on_error(result, func, arguments):
637
"""A function to retry on some errors, suitable
638
for the 'errcheck' attribute on ctypes functions"""
639
while result < 0:
640
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
641
return _error_code(result)
642
result = func(*arguments)
643
return result
644
645
# Unless otherwise indicated, the function declarations below are
646
# all from the gnutls/gnutls.h C header file.
647
648
# Functions
649
priority_set_direct = _library.gnutls_priority_set_direct
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
ctypes.POINTER(ctypes.c_char_p)]
652
priority_set_direct.restype = _error_code
653
654
init = _library.gnutls_init
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
init.restype = _error_code
657
658
set_default_priority = _library.gnutls_set_default_priority
659
set_default_priority.argtypes = [session_t]
660
set_default_priority.restype = _error_code
661
662
record_send = _library.gnutls_record_send
663
record_send.argtypes = [session_t, ctypes.c_void_p,
664
ctypes.c_size_t]
665
record_send.restype = ctypes.c_ssize_t
666
record_send.errcheck = _retry_on_error
667
668
certificate_allocate_credentials = (
669
_library.gnutls_certificate_allocate_credentials)
670
certificate_allocate_credentials.argtypes = [
671
ctypes.POINTER(certificate_credentials_t)]
672
certificate_allocate_credentials.restype = _error_code
673
674
certificate_free_credentials = (
675
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
678
certificate_free_credentials.restype = None
679
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
683
ctypes.c_int]
684
handshake_set_private_extensions.restype = None
685
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
688
ctypes.c_void_p]
689
credentials_set.restype = _error_code
690
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
694
695
certificate_type_get = _library.gnutls_certificate_type_get
696
certificate_type_get.argtypes = [session_t]
697
certificate_type_get.restype = _error_code
698
699
certificate_get_peers = _library.gnutls_certificate_get_peers
700
certificate_get_peers.argtypes = [session_t,
701
ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
703
704
global_set_log_level = _library.gnutls_global_set_log_level
705
global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
707
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
711
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
715
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
720
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
724
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
729
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
733
734
# All the function declarations below are from gnutls/openpgp.h
735
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
739
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
743
openpgp_crt_fmt_t]
744
openpgp_crt_import.restype = _error_code
745
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
750
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
754
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
758
ctypes.c_void_p,
759
ctypes.POINTER(
760
ctypes.c_size_t)]
761
openpgp_crt_get_fingerprint.restype = _error_code
762
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
766
gnutls = GnuTLS()
767
768
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
772
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
775
"""
776
connection.send(func(*args, **kwargs))
777
connection.close()
778
779
239
780
class Client(object):
240
781
"""A representation of a client host served by this server.
241
782
242
783
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
784
approved: bool(); 'None' if not yet approved/disapproved
244
785
approval_delay: datetime.timedelta(); Time to wait for approval
245
786
approval_duration: datetime.timedelta(); Duration of one approval
246
787
checker: subprocess.Popen(); a running checker process used
247
788
to see if the client lives.
248
789
'None' if no process is running.
249
checker_callback_tag: - '' -
790
checker_callback_tag: a GLib event source tag, or None
250
791
checker_command: string; External command which is run to check
251
792
if client lives. %() expansions are done at
252
793
runtime with vars(self) as dict, so that for
253
794
instance %(name)s can be used in the command.
254
checker_initiator_tag: a gobject event source tag, or None
795
checker_initiator_tag: a GLib event source tag, or None
255
796
created: datetime.datetime(); (UTC) object creation
797
client_structure: Object describing what attributes a client has
798
and is used for storing the client at exit
256
799
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: - '' -
800
disable_initiator_tag: a GLib event source tag, or None
259
801
enabled: bool()
260
802
fingerprint: string (40 or 32 hexadecimal digits); used to
261
803
uniquely identify the client
262
804
host: string; available for use by the checker command
263
805
interval: datetime.timedelta(); How often to start a new checker
806
last_approval_request: datetime.datetime(); (UTC) or None
264
807
last_checked_ok: datetime.datetime(); (UTC) or None
265
last_enabled: datetime.datetime(); (UTC)
808
last_checker_status: integer between 0 and 255 reflecting exit
809
status of last checker. -1 reflects crashed
810
checker, -2 means no checker completed yet.
811
last_checker_signal: The signal which killed the last checker, if
812
last_checker_status is -1
813
last_enabled: datetime.datetime(); (UTC) or None
266
814
name: string; from the config file, used in log messages and
267
815
D-Bus identifiers
268
816
secret: bytestring; sent verbatim (over TLS) to client
269
817
timeout: datetime.timedelta(); How long from last_checked_ok
270
818
until this client is disabled
819
extended_timeout: extra long timeout when secret has been sent
271
820
runtime_expansions: Allowed attributes for runtime expansion.
821
expires: datetime.datetime(); time (UTC) when a client will be
822
disabled, or None
823
server_settings: The server_settings dict from main()
272
824
"""
273
274
runtime_expansions = (u"approval_delay", u"approval_duration",
275
u"created", u"enabled", u"fingerprint",
276
u"host", u"interval", u"last_checked_ok",
277
u"last_enabled", u"name", u"timeout")
278
825
826
runtime_expansions = ("approval_delay", "approval_duration",
827
"created", "enabled", "expires",
828
"fingerprint", "host", "interval",
829
"last_approval_request", "last_checked_ok",
830
"last_enabled", "name", "timeout")
831
client_defaults = {
832
"timeout": "PT5M",
833
"extended_timeout": "PT15M",
834
"interval": "PT2M",
835
"checker": "fping -q -- %%(host)s",
836
"host": "",
837
"approval_delay": "PT0S",
838
"approval_duration": "PT1S",
839
"approved_by_default": "True",
840
"enabled": "True",
841
}
842
279
843
@staticmethod
280
def _timedelta_to_milliseconds(td):
281
"Convert a datetime.timedelta() to milliseconds"
282
return ((td.days * 24 * 60 * 60 * 1000)
283
+ (td.seconds * 1000)
284
+ (td.microseconds // 1000))
285
286
def timeout_milliseconds(self):
287
"Return the 'timeout' attribute in milliseconds"
288
return self._timedelta_to_milliseconds(self.timeout)
289
290
def interval_milliseconds(self):
291
"Return the 'interval' attribute in milliseconds"
292
return self._timedelta_to_milliseconds(self.interval)
293
294
def approval_delay_milliseconds(self):
295
return self._timedelta_to_milliseconds(self.approval_delay)
296
297
def __init__(self, name = None, disable_hook=None, config=None):
298
"""Note: the 'checker' key in 'config' sets the
299
'checker_command' attribute and *not* the 'checker'
300
attribute."""
844
def config_parser(config):
845
"""Construct a new dict of client settings of this form:
846
{ client_name: {setting_name: value, ...}, ...}
847
with exceptions for any special settings as defined above.
848
NOTE: Must be a pure function. Must return the same result
849
value given the same arguments.
850
"""
851
settings = {}
852
for client_name in config.sections():
853
section = dict(config.items(client_name))
854
client = settings[client_name] = {}
855
856
client["host"] = section["host"]
857
# Reformat values from string types to Python types
858
client["approved_by_default"] = config.getboolean(
859
client_name, "approved_by_default")
860
client["enabled"] = config.getboolean(client_name,
861
"enabled")
862
863
# Uppercase and remove spaces from fingerprint for later
864
# comparison purposes with return value from the
865
# fingerprint() function
866
client["fingerprint"] = (section["fingerprint"].upper()
867
.replace(" ", ""))
868
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
870
.encode("utf-8"),
871
"base64")
872
elif "secfile" in section:
873
with open(os.path.expanduser(os.path.expandvars
874
(section["secfile"])),
875
"rb") as secfile:
876
client["secret"] = secfile.read()
877
else:
878
raise TypeError("No secret or secfile for section {}"
879
.format(section))
880
client["timeout"] = string_to_delta(section["timeout"])
881
client["extended_timeout"] = string_to_delta(
882
section["extended_timeout"])
883
client["interval"] = string_to_delta(section["interval"])
884
client["approval_delay"] = string_to_delta(
885
section["approval_delay"])
886
client["approval_duration"] = string_to_delta(
887
section["approval_duration"])
888
client["checker_command"] = section["checker"]
889
client["last_approval_request"] = None
890
client["last_checked_ok"] = None
891
client["last_checker_status"] = -2
892
893
return settings
894
895
def __init__(self, settings, name=None, server_settings=None):
301
896
self.name = name
302
if config is None:
303
config = {}
304
logger.debug(u"Creating client %r", self.name)
305
# Uppercase and remove spaces from fingerprint for later
306
# comparison purposes with return value from the fingerprint()
307
# function
308
self.fingerprint = (config[u"fingerprint"].upper()
309
.replace(u" ", u""))
310
logger.debug(u" Fingerprint: %s", self.fingerprint)
311
if u"secret" in config:
312
self.secret = config[u"secret"].decode(u"base64")
313
elif u"secfile" in config:
314
with open(os.path.expanduser(os.path.expandvars
315
(config[u"secfile"])),
316
"rb") as secfile:
317
self.secret = secfile.read()
897
if server_settings is None:
898
server_settings = {}
899
self.server_settings = server_settings
900
# adding all client settings
901
for setting, value in settings.items():
902
setattr(self, setting, value)
903
904
if self.enabled:
905
if not hasattr(self, "last_enabled"):
906
self.last_enabled = datetime.datetime.utcnow()
907
if not hasattr(self, "expires"):
908
self.expires = (datetime.datetime.utcnow()
909
+ self.timeout)
318
910
else:
319
raise TypeError(u"No secret or secfile for client %s"
320
% self.name)
321
self.host = config.get(u"host", u"")
322
self.created = datetime.datetime.utcnow()
323
self.enabled = False
324
self.last_enabled = None
325
self.last_checked_ok = None
326
self.timeout = string_to_delta(config[u"timeout"])
327
self.interval = string_to_delta(config[u"interval"])
328
self.disable_hook = disable_hook
911
self.last_enabled = None
912
self.expires = None
913
914
logger.debug("Creating client %r", self.name)
915
logger.debug(" Fingerprint: %s", self.fingerprint)
916
self.created = settings.get("created",
917
datetime.datetime.utcnow())
918
919
# attributes specific for this server instance
329
920
self.checker = None
330
921
self.checker_initiator_tag = None
331
922
self.disable_initiator_tag = None
332
923
self.checker_callback_tag = None
333
self.checker_command = config[u"checker"]
334
924
self.current_checker_command = None
335
self.last_connect = None
336
self._approved = None
337
self.approved_by_default = config.get(u"approved_by_default",
338
True)
925
self.approved = None
339
926
self.approvals_pending = 0
340
self.approval_delay = string_to_delta(
341
config[u"approval_delay"])
342
self.approval_duration = string_to_delta(
343
config[u"approval_duration"])
344
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
345
927
self.changedstate = multiprocessing_manager.Condition(
928
multiprocessing_manager.Lock())
929
self.client_structure = [attr
930
for attr in self.__dict__.keys()
931
if not attr.startswith("_")]
932
self.client_structure.append("client_structure")
933
934
for name, t in inspect.getmembers(
935
type(self), lambda obj: isinstance(obj, property)):
936
if not name.startswith("_"):
937
self.client_structure.append(name)
938
939
# Send notice to process children that client state has changed
346
940
def send_changedstate(self):
347
self.changedstate.acquire()
348
self.changedstate.notify_all()
349
self.changedstate.release()
350
941
with self.changedstate:
942
self.changedstate.notify_all()
943
351
944
def enable(self):
352
945
"""Start this client's checker and timeout hooks"""
353
if getattr(self, u"enabled", False):
946
if getattr(self, "enabled", False):
354
947
# Already enabled
355
948
return
356
self.send_changedstate()
949
self.expires = datetime.datetime.utcnow() + self.timeout
950
self.enabled = True
357
951
self.last_enabled = datetime.datetime.utcnow()
952
self.init_checker()
953
self.send_changedstate()
954
955
def disable(self, quiet=True):
956
"""Disable this client."""
957
if not getattr(self, "enabled", False):
958
return False
959
if not quiet:
960
logger.info("Disabling client %s", self.name)
961
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
963
self.disable_initiator_tag = None
964
self.expires = None
965
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
967
self.checker_initiator_tag = None
968
self.stop_checker()
969
self.enabled = False
970
if not quiet:
971
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
973
return False
974
975
def __del__(self):
976
self.disable()
977
978
def init_checker(self):
358
979
# Schedule a new checker to be started an 'interval' from now,
359
980
# and every interval from then on.
360
self.checker_initiator_tag = (gobject.timeout_add
361
(self.interval_milliseconds(),
362
self.start_checker))
981
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
984
int(self.interval.total_seconds() * 1000),
985
self.start_checker)
363
986
# Schedule a disable() when 'timeout' has passed
364
self.disable_initiator_tag = (gobject.timeout_add
365
(self.timeout_milliseconds(),
366
self.disable))
367
self.enabled = True
987
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
990
int(self.timeout.total_seconds() * 1000), self.disable)
368
991
# Also start a new checker *right now*.
369
992
self.start_checker()
370
371
def disable(self, quiet=True):
372
"""Disable this client."""
373
if not getattr(self, "enabled", False):
374
return False
375
if not quiet:
376
self.send_changedstate()
377
if not quiet:
378
logger.info(u"Disabling client %s", self.name)
379
if getattr(self, u"disable_initiator_tag", False):
380
gobject.source_remove(self.disable_initiator_tag)
381
self.disable_initiator_tag = None
382
if getattr(self, u"checker_initiator_tag", False):
383
gobject.source_remove(self.checker_initiator_tag)
384
self.checker_initiator_tag = None
385
self.stop_checker()
386
if self.disable_hook:
387
self.disable_hook(self)
388
self.enabled = False
389
# Do not run this again if called by a gobject.timeout_add
390
return False
391
392
def __del__(self):
393
self.disable_hook = None
394
self.disable()
395
396
def checker_callback(self, pid, condition, command):
993
994
def checker_callback(self, source, condition, connection,
995
command):
397
996
"""The checker has completed, so take appropriate actions."""
398
997
self.checker_callback_tag = None
399
998
self.checker = None
400
if os.WIFEXITED(condition):
401
exitstatus = os.WEXITSTATUS(condition)
402
if exitstatus == 0:
403
logger.info(u"Checker for %(name)s succeeded",
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1001
connection.close()
1002
1003
if returncode >= 0:
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
1006
if self.last_checker_status == 0:
1007
logger.info("Checker for %(name)s succeeded",
404
1008
vars(self))
405
1009
self.checked_ok()
406
1010
else:
407
logger.info(u"Checker for %(name)s failed",
408
vars(self))
1011
logger.info("Checker for %(name)s failed", vars(self))
409
1012
else:
410
logger.warning(u"Checker for %(name)s crashed?",
1013
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
logger.warning("Checker for %(name)s crashed?",
411
1016
vars(self))
412
1017
return False
1018
413
1019
def checked_ok(self):
414
"""Bump up the timeout for this client.
415
416
This should only be called when the client has been seen,
417
alive and well.
418
"""
1020
"""Assert that the client has been seen, alive and well."""
419
1021
self.last_checked_ok = datetime.datetime.utcnow()
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = (gobject.timeout_add
422
(self.timeout_milliseconds(),
423
self.disable))
424
1022
self.last_checker_status = 0
1023
self.last_checker_signal = None
1024
self.bump_timeout()
1025
1026
def bump_timeout(self, timeout=None):
1027
"""Bump up the timeout for this client."""
1028
if timeout is None:
1029
timeout = self.timeout
1030
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
1035
int(timeout.total_seconds() * 1000), self.disable)
1036
self.expires = datetime.datetime.utcnow() + timeout
1037
1038
def need_approval(self):
1039
self.last_approval_request = datetime.datetime.utcnow()
1040
425
1041
def start_checker(self):
426
1042
"""Start a new checker subprocess if one is not running.
427
1043
428
1044
If a checker already exists, leave it running and do
429
1045
nothing."""
430
1046
# The reason for not killing a running checker is that if we
431
# did that, then if a checker (for some reason) started
432
# running slowly and taking more than 'interval' time, the
433
# client would inevitably timeout, since no checker would get
434
# a chance to run to completion. If we instead leave running
1047
# did that, and if a checker (for some reason) started running
1048
# slowly and taking more than 'interval' time, then the client
1049
# would inevitably timeout, since no checker would get a
1050
# chance to run to completion. If we instead leave running
435
1051
# checkers alone, the checker would have to take more time
436
1052
# than 'timeout' for the client to be disabled, which is as it
437
1053
# should be.
438
439
# If a checker exists, make sure it is not a zombie
440
try:
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
442
except (AttributeError, OSError), error:
443
if (isinstance(error, OSError)
444
and error.errno != errno.ECHILD):
445
raise error
446
else:
447
if pid:
448
logger.warning(u"Checker was a zombie")
449
gobject.source_remove(self.checker_callback_tag)
450
self.checker_callback(pid, status,
451
self.current_checker_command)
1054
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
1057
self.checker.join()
1058
self.checker = None
452
1059
# Start a new checker if needed
453
1060
if self.checker is None:
1061
# Escape attributes for the shell
1062
escaped_attrs = {
1063
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
454
1065
try:
455
# In case checker_command has exactly one % operator
456
command = self.checker_command % self.host
457
except TypeError:
458
# Escape attributes for the shell
459
escaped_attrs = dict(
460
(attr,
461
re.escape(unicode(str(getattr(self, attr, u"")),
462
errors=
463
u'replace')))
464
for attr in
465
self.runtime_expansions)
466
467
try:
468
command = self.checker_command % escaped_attrs
469
except TypeError, error:
470
logger.error(u'Could not format string "%s":'
471
u' %s', self.checker_command, error)
472
return True # Try again later
1066
command = self.checker_command % escaped_attrs
1067
except TypeError as error:
1068
logger.error('Could not format string "%s"',
1069
self.checker_command,
1070
exc_info=error)
1071
return True # Try again later
473
1072
self.current_checker_command = command
474
try:
475
logger.info(u"Starting checker %r for %s",
476
command, self.name)
477
# We don't need to redirect stdout and stderr, since
478
# in normal mode, that is already done by daemon(),
479
# and in debug mode we don't want to. (Stdin is
480
# always replaced by /dev/null.)
481
self.checker = subprocess.Popen(command,
482
close_fds=True,
483
shell=True, cwd=u"/")
484
self.checker_callback_tag = (gobject.child_watch_add
485
(self.checker.pid,
486
self.checker_callback,
487
data=command))
488
# The checker may have completed before the gobject
489
# watch was added. Check for this.
490
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
491
if pid:
492
gobject.source_remove(self.checker_callback_tag)
493
self.checker_callback(pid, status, command)
494
except OSError, error:
495
logger.error(u"Failed to start subprocess: %s",
496
error)
497
# Re-run this periodically if run by gobject.timeout_add
1073
logger.info("Starting checker %r for %s", command,
1074
self.name)
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1081
# created wnull.
1082
popen_args = {"close_fds": True,
1083
"shell": True,
1084
"cwd": "/"}
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1088
"stderr": wnull})
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1091
target=call_pipe,
1092
args=(pipe[1], subprocess.call, command),
1093
kwargs=popen_args)
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
498
1099
return True
499
1100
500
1101
def stop_checker(self):
501
1102
"""Force the checker process, if any, to stop."""
502
1103
if self.checker_callback_tag:
503
gobject.source_remove(self.checker_callback_tag)
1104
GLib.source_remove(self.checker_callback_tag)
504
1105
self.checker_callback_tag = None
505
if getattr(self, u"checker", None) is None:
1106
if getattr(self, "checker", None) is None:
506
1107
return
507
logger.debug(u"Stopping checker for %(name)s", vars(self))
508
try:
509
os.kill(self.checker.pid, signal.SIGTERM)
510
#time.sleep(0.5)
511
#if self.checker.poll() is None:
512
# os.kill(self.checker.pid, signal.SIGKILL)
513
except OSError, error:
514
if error.errno != errno.ESRCH: # No such process
515
raise
1108
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
516
1110
self.checker = None
517
1111
518
def dbus_service_property(dbus_interface, signature=u"v",
519
access=u"readwrite", byte_arrays=False):
1112
1113
def dbus_service_property(dbus_interface,
1114
signature="v",
1115
access="readwrite",
1116
byte_arrays=False):
520
1117
"""Decorators for marking methods of a DBusObjectWithProperties to
521
1118
become properties on the D-Bus.
522
1119
523
1120
The decorated method will be called with no arguments by "Get"
524
1121
and with one argument by "Set".
525
1122
526
1123
The parameters, where they are supported, are the same as
527
1124
dbus.service.method, except there is only "signature", since the
528
1125
type from Get() and the type sent to Set() is the same.
529
1126
"""
530
1127
# Encoding deeply encoded byte arrays is not supported yet by the
531
1128
# "Set" method, so we fail early here:
532
if byte_arrays and signature != u"ay":
533
raise ValueError(u"Byte arrays not supported for non-'ay'"
534
u" signature %r" % signature)
1129
if byte_arrays and signature != "ay":
1130
raise ValueError("Byte arrays not supported for non-'ay'"
1131
" signature {!r}".format(signature))
1132
535
1133
def decorator(func):
536
1134
func._dbus_is_property = True
537
1135
func._dbus_interface = dbus_interface
538
1136
func._dbus_signature = signature
539
1137
func._dbus_access = access
540
1138
func._dbus_name = func.__name__
541
if func._dbus_name.endswith(u"_dbus_property"):
1139
if func._dbus_name.endswith("_dbus_property"):
542
1140
func._dbus_name = func._dbus_name[:-14]
543
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
544
return func
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1142
return func
1143
1144
return decorator
1145
1146
1147
def dbus_interface_annotations(dbus_interface):
1148
"""Decorator for marking functions returning interface annotations
1149
1150
Usage:
1151
1152
@dbus_interface_annotations("org.example.Interface")
1153
def _foo(self): # Function name does not matter
1154
return {"org.freedesktop.DBus.Deprecated": "true",
1155
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1156
"false"}
1157
"""
1158
1159
def decorator(func):
1160
func._dbus_is_interface = True
1161
func._dbus_interface = dbus_interface
1162
func._dbus_name = dbus_interface
1163
return func
1164
1165
return decorator
1166
1167
1168
def dbus_annotations(annotations):
1169
"""Decorator to annotate D-Bus methods, signals or properties
1170
Usage:
1171
1172
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1173
"org.freedesktop.DBus.Property."
1174
"EmitsChangedSignal": "false"})
1175
@dbus_service_property("org.example.Interface", signature="b",
1176
access="r")
1177
def Property_dbus_property(self):
1178
return dbus.Boolean(False)
1179
1180
See also the DBusObjectWithAnnotations class.
1181
"""
1182
1183
def decorator(func):
1184
func._dbus_annotations = annotations
1185
return func
1186
545
1187
return decorator
546
1188
547
1189
548
1190
class DBusPropertyException(dbus.exceptions.DBusException):
549
1191
"""A base class for D-Bus property-related exceptions
550
1192
"""
551
def __unicode__(self):
552
return unicode(str(self))
1193
pass
553
1194
554
1195
555
1196
class DBusPropertyAccessException(DBusPropertyException):
564
1205
pass
565
1206
566
1207
567
class DBusObjectWithProperties(dbus.service.Object):
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1210
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
1213
"""
1214
1215
@staticmethod
1216
def _is_dbus_thing(thing):
1217
"""Returns a function testing if an attribute is a D-Bus thing
1218
1219
If called like _is_dbus_thing("method") it returns a function
1220
suitable for use as predicate to inspect.getmembers().
1221
"""
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1223
False)
1224
1225
def _get_all_dbus_things(self, thing):
1226
"""Returns a generator of (name, attribute) pairs
1227
"""
1228
return ((getattr(athing.__get__(self), "_dbus_name", name),
1229
athing.__get__(self))
1230
for cls in self.__class__.__mro__
1231
for name, athing in
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1233
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1235
out_signature="s",
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1240
1241
Inserts annotation tags on methods and signals.
1242
"""
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1244
connection)
1245
try:
1246
document = xml.dom.minidom.parseString(xmlstring)
1247
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1252
annots = dict()
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1262
"annotation")
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1273
)).items():
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1285
== "out"):
1286
arg.setAttribute("name",
1287
"xml_data")
1288
xmlstring = document.toxml("utf-8")
1289
document.unlink()
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1293
exc_info=error)
1294
return xmlstring
1295
1296
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
568
1298
"""A D-Bus object with properties.
569
1299
570
1300
Classes inheriting from this can use the dbus_service_property
571
1301
decorator to expose methods as D-Bus properties. It exposes the
572
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
573
1303
"""
574
575
@staticmethod
576
def _is_dbus_property(obj):
577
return getattr(obj, u"_dbus_is_property", False)
578
579
def _get_all_dbus_properties(self):
580
"""Returns a generator of (name, attribute) pairs
581
"""
582
return ((prop._dbus_name, prop)
583
for name, prop in
584
inspect.getmembers(self, self._is_dbus_property))
585
1304
586
1305
def _get_dbus_property(self, interface_name, property_name):
587
1306
"""Returns a bound method if one exists which is a D-Bus
588
1307
property with the specified name and interface.
589
1308
"""
590
for name in (property_name,
591
property_name + u"_dbus_property"):
592
prop = getattr(self, name, None)
593
if (prop is None
594
or not self._is_dbus_property(prop)
595
or prop._dbus_name != property_name
596
or (interface_name and prop._dbus_interface
597
and interface_name != prop._dbus_interface)):
598
continue
599
return prop
1309
for cls in self.__class__.__mro__:
1310
for name, value in inspect.getmembers(
1311
cls, self._is_dbus_thing("property")):
1312
if (value._dbus_name == property_name
1313
and value._dbus_interface == interface_name):
1314
return value.__get__(self)
1315
600
1316
# No such property
601
raise DBusPropertyNotFound(self.dbus_object_path + u":"
602
+ interface_name + u"."
603
+ property_name)
604
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
606
out_signature=u"v")
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
self.dbus_object_path, interface_name, property_name))
1319
1320
@classmethod
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1326
for attr in dir(x))
1327
if name is not None)
1328
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
1330
in_signature="ss",
1331
out_signature="v")
607
1332
def Get(self, interface_name, property_name):
608
1333
"""Standard D-Bus property Get() method, see D-Bus standard.
609
1334
"""
610
1335
prop = self._get_dbus_property(interface_name, property_name)
611
if prop._dbus_access == u"write":
1336
if prop._dbus_access == "write":
612
1337
raise DBusPropertyAccessException(property_name)
613
1338
value = prop()
614
if not hasattr(value, u"variant_level"):
1339
if not hasattr(value, "variant_level"):
615
1340
return value
616
1341
return type(value)(value, variant_level=value.variant_level+1)
617
618
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1342
1343
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
619
1344
def Set(self, interface_name, property_name, value):
620
1345
"""Standard D-Bus property Set() method, see D-Bus standard.
621
1346
"""
622
1347
prop = self._get_dbus_property(interface_name, property_name)
623
if prop._dbus_access == u"read":
1348
if prop._dbus_access == "read":
624
1349
raise DBusPropertyAccessException(property_name)
625
if prop._dbus_get_args_options[u"byte_arrays"]:
1350
if prop._dbus_get_args_options["byte_arrays"]:
626
1351
# The byte_arrays option is not supported yet on
627
1352
# signatures other than "ay".
628
if prop._dbus_signature != u"ay":
629
raise ValueError
630
value = dbus.ByteArray(''.join(unichr(byte)
631
for byte in value))
1353
if prop._dbus_signature != "ay":
1354
raise ValueError("Byte arrays not supported for non-"
1355
"'ay' signature {!r}"
1356
.format(prop._dbus_signature))
1357
value = dbus.ByteArray(b''.join(chr(byte)
1358
for byte in value))
632
1359
prop(value)
633
634
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
635
out_signature=u"a{sv}")
1360
1361
@dbus.service.method(dbus.PROPERTIES_IFACE,
1362
in_signature="s",
1363
out_signature="a{sv}")
636
1364
def GetAll(self, interface_name):
637
1365
"""Standard D-Bus property GetAll() method, see D-Bus
638
1366
standard.
639
1367
640
1368
Note: Will not include properties with access="write".
641
1369
"""
642
all = {}
643
for name, prop in self._get_all_dbus_properties():
1370
properties = {}
1371
for name, prop in self._get_all_dbus_things("property"):
644
1372
if (interface_name
645
1373
and interface_name != prop._dbus_interface):
646
1374
# Interface non-empty but did not match
647
1375
continue
648
1376
# Ignore write-only properties
649
if prop._dbus_access == u"write":
1377
if prop._dbus_access == "write":
650
1378
continue
651
1379
value = prop()
652
if not hasattr(value, u"variant_level"):
653
all[name] = value
1380
if not hasattr(value, "variant_level"):
1381
properties[name] = value
654
1382
continue
655
all[name] = type(value)(value, variant_level=
656
value.variant_level+1)
657
return dbus.Dictionary(all, signature=u"sv")
658
1383
properties[name] = type(value)(
1384
value, variant_level=value.variant_level + 1)
1385
return dbus.Dictionary(properties, signature="sv")
1386
1387
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1388
def PropertiesChanged(self, interface_name, changed_properties,
1389
invalidated_properties):
1390
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1391
standard.
1392
"""
1393
pass
1394
659
1395
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
660
out_signature=u"s",
1396
out_signature="s",
661
1397
path_keyword='object_path',
662
1398
connection_keyword='connection')
663
1399
def Introspect(self, object_path, connection):
664
"""Standard D-Bus method, overloaded to insert property tags.
1400
"""Overloading of standard D-Bus method.
1401
1402
Inserts property tags and interface annotation tags.
665
1403
"""
666
xmlstring = dbus.service.Object.Introspect(self, object_path,
667
connection)
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1405
object_path,
1406
connection)
668
1407
try:
669
1408
document = xml.dom.minidom.parseString(xmlstring)
1409
670
1410
def make_tag(document, name, prop):
671
e = document.createElement(u"property")
672
e.setAttribute(u"name", name)
673
e.setAttribute(u"type", prop._dbus_signature)
674
e.setAttribute(u"access", prop._dbus_access)
1411
e = document.createElement("property")
1412
e.setAttribute("name", name)
1413
e.setAttribute("type", prop._dbus_signature)
1414
e.setAttribute("access", prop._dbus_access)
675
1415
return e
676
for if_tag in document.getElementsByTagName(u"interface"):
1416
1417
for if_tag in document.getElementsByTagName("interface"):
1418
# Add property tags
677
1419
for tag in (make_tag(document, name, prop)
678
1420
for name, prop
679
in self._get_all_dbus_properties()
1421
in self._get_all_dbus_things("property")
680
1422
if prop._dbus_interface
681
== if_tag.getAttribute(u"name")):
1423
== if_tag.getAttribute("name")):
682
1424
if_tag.appendChild(tag)
1425
# Add annotation tags for properties
1426
for tag in if_tag.getElementsByTagName("property"):
1427
annots = dict()
1428
for name, prop in self._get_all_dbus_things(
1429
"property"):
1430
if (name == tag.getAttribute("name")
1431
and prop._dbus_interface
1432
== if_tag.getAttribute("name")):
1433
annots.update(getattr(
1434
prop, "_dbus_annotations", {}))
1435
for name, value in annots.items():
1436
ann_tag = document.createElement(
1437
"annotation")
1438
ann_tag.setAttribute("name", name)
1439
ann_tag.setAttribute("value", value)
1440
tag.appendChild(ann_tag)
683
1441
# Add the names to the return values for the
684
1442
# "org.freedesktop.DBus.Properties" methods
685
if (if_tag.getAttribute(u"name")
686
== u"org.freedesktop.DBus.Properties"):
687
for cn in if_tag.getElementsByTagName(u"method"):
688
if cn.getAttribute(u"name") == u"Get":
689
for arg in cn.getElementsByTagName(u"arg"):
690
if (arg.getAttribute(u"direction")
691
== u"out"):
692
arg.setAttribute(u"name", u"value")
693
elif cn.getAttribute(u"name") == u"GetAll":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"props")
698
xmlstring = document.toxml(u"utf-8")
699
document.unlink()
700
except (AttributeError, xml.dom.DOMException,
701
xml.parsers.expat.ExpatError), error:
702
logger.error(u"Failed to override Introspection method",
703
error)
704
return xmlstring
705
706
1443
if (if_tag.getAttribute("name")
1444
== "org.freedesktop.DBus.Properties"):
1445
for cn in if_tag.getElementsByTagName("method"):
1446
if cn.getAttribute("name") == "Get":
1447
for arg in cn.getElementsByTagName("arg"):
1448
if (arg.getAttribute("direction")
1449
== "out"):
1450
arg.setAttribute("name", "value")
1451
elif cn.getAttribute("name") == "GetAll":
1452
for arg in cn.getElementsByTagName("arg"):
1453
if (arg.getAttribute("direction")
1454
== "out"):
1455
arg.setAttribute("name", "props")
1456
xmlstring = document.toxml("utf-8")
1457
document.unlink()
1458
except (AttributeError, xml.dom.DOMException,
1459
xml.parsers.expat.ExpatError) as error:
1460
logger.error("Failed to override Introspection method",
1461
exc_info=error)
1462
return xmlstring
1463
1464
try:
1465
dbus.OBJECT_MANAGER_IFACE
1466
except AttributeError:
1467
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1468
1469
1470
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1471
"""A D-Bus object with an ObjectManager.
1472
1473
Classes inheriting from this exposes the standard
1474
GetManagedObjects call and the InterfacesAdded and
1475
InterfacesRemoved signals on the standard
1476
"org.freedesktop.DBus.ObjectManager" interface.
1477
1478
Note: No signals are sent automatically; they must be sent
1479
manually.
1480
"""
1481
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1482
out_signature="a{oa{sa{sv}}}")
1483
def GetManagedObjects(self):
1484
"""This function must be overridden"""
1485
raise NotImplementedError()
1486
1487
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1488
signature="oa{sa{sv}}")
1489
def InterfacesAdded(self, object_path, interfaces_and_properties):
1490
pass
1491
1492
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1493
def InterfacesRemoved(self, object_path, interfaces):
1494
pass
1495
1496
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1497
out_signature="s",
1498
path_keyword='object_path',
1499
connection_keyword='connection')
1500
def Introspect(self, object_path, connection):
1501
"""Overloading of standard D-Bus method.
1502
1503
Override return argument name of GetManagedObjects to be
1504
"objpath_interfaces_and_properties"
1505
"""
1506
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1507
object_path,
1508
connection)
1509
try:
1510
document = xml.dom.minidom.parseString(xmlstring)
1511
1512
for if_tag in document.getElementsByTagName("interface"):
1513
# Fix argument name for the GetManagedObjects method
1514
if (if_tag.getAttribute("name")
1515
== dbus.OBJECT_MANAGER_IFACE):
1516
for cn in if_tag.getElementsByTagName("method"):
1517
if (cn.getAttribute("name")
1518
== "GetManagedObjects"):
1519
for arg in cn.getElementsByTagName("arg"):
1520
if (arg.getAttribute("direction")
1521
== "out"):
1522
arg.setAttribute(
1523
"name",
1524
"objpath_interfaces"
1525
"_and_properties")
1526
xmlstring = document.toxml("utf-8")
1527
document.unlink()
1528
except (AttributeError, xml.dom.DOMException,
1529
xml.parsers.expat.ExpatError) as error:
1530
logger.error("Failed to override Introspection method",
1531
exc_info=error)
1532
return xmlstring
1533
1534
1535
def datetime_to_dbus(dt, variant_level=0):
1536
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1537
if dt is None:
1538
return dbus.String("", variant_level=variant_level)
1539
return dbus.String(dt.isoformat(), variant_level=variant_level)
1540
1541
1542
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1543
"""A class decorator; applied to a subclass of
1544
dbus.service.Object, it will add alternate D-Bus attributes with
1545
interface names according to the "alt_interface_names" mapping.
1546
Usage:
1547
1548
@alternate_dbus_interfaces({"org.example.Interface":
1549
"net.example.AlternateInterface"})
1550
class SampleDBusObject(dbus.service.Object):
1551
@dbus.service.method("org.example.Interface")
1552
def SampleDBusMethod():
1553
pass
1554
1555
The above "SampleDBusMethod" on "SampleDBusObject" will be
1556
reachable via two interfaces: "org.example.Interface" and
1557
"net.example.AlternateInterface", the latter of which will have
1558
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1559
"true", unless "deprecate" is passed with a False value.
1560
1561
This works for methods and signals, and also for D-Bus properties
1562
(from DBusObjectWithProperties) and interfaces (from the
1563
dbus_interface_annotations decorator).
1564
"""
1565
1566
def wrapper(cls):
1567
for orig_interface_name, alt_interface_name in (
1568
alt_interface_names.items()):
1569
attr = {}
1570
interface_names = set()
1571
# Go though all attributes of the class
1572
for attrname, attribute in inspect.getmembers(cls):
1573
# Ignore non-D-Bus attributes, and D-Bus attributes
1574
# with the wrong interface name
1575
if (not hasattr(attribute, "_dbus_interface")
1576
or not attribute._dbus_interface.startswith(
1577
orig_interface_name)):
1578
continue
1579
# Create an alternate D-Bus interface name based on
1580
# the current name
1581
alt_interface = attribute._dbus_interface.replace(
1582
orig_interface_name, alt_interface_name)
1583
interface_names.add(alt_interface)
1584
# Is this a D-Bus signal?
1585
if getattr(attribute, "_dbus_is_signal", False):
1586
# Extract the original non-method undecorated
1587
# function by black magic
1588
if sys.version_info.major == 2:
1589
nonmethod_func = (dict(
1590
zip(attribute.func_code.co_freevars,
1591
attribute.__closure__))
1592
["func"].cell_contents)
1593
else:
1594
nonmethod_func = (dict(
1595
zip(attribute.__code__.co_freevars,
1596
attribute.__closure__))
1597
["func"].cell_contents)
1598
# Create a new, but exactly alike, function
1599
# object, and decorate it to be a new D-Bus signal
1600
# with the alternate D-Bus interface name
1601
new_function = copy_function(nonmethod_func)
1602
new_function = (dbus.service.signal(
1603
alt_interface,
1604
attribute._dbus_signature)(new_function))
1605
# Copy annotations, if any
1606
try:
1607
new_function._dbus_annotations = dict(
1608
attribute._dbus_annotations)
1609
except AttributeError:
1610
pass
1611
1612
# Define a creator of a function to call both the
1613
# original and alternate functions, so both the
1614
# original and alternate signals gets sent when
1615
# the function is called
1616
def fixscope(func1, func2):
1617
"""This function is a scope container to pass
1618
func1 and func2 to the "call_both" function
1619
outside of its arguments"""
1620
1621
@functools.wraps(func2)
1622
def call_both(*args, **kwargs):
1623
"""This function will emit two D-Bus
1624
signals by calling func1 and func2"""
1625
func1(*args, **kwargs)
1626
func2(*args, **kwargs)
1627
# Make wrapper function look like a D-Bus
1628
# signal
1629
for name, attr in inspect.getmembers(func2):
1630
if name.startswith("_dbus_"):
1631
setattr(call_both, name, attr)
1632
1633
return call_both
1634
# Create the "call_both" function and add it to
1635
# the class
1636
attr[attrname] = fixscope(attribute, new_function)
1637
# Is this a D-Bus method?
1638
elif getattr(attribute, "_dbus_is_method", False):
1639
# Create a new, but exactly alike, function
1640
# object. Decorate it to be a new D-Bus method
1641
# with the alternate D-Bus interface name. Add it
1642
# to the class.
1643
attr[attrname] = (
1644
dbus.service.method(
1645
alt_interface,
1646
attribute._dbus_in_signature,
1647
attribute._dbus_out_signature)
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1650
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
# Is this a D-Bus property?
1656
elif getattr(attribute, "_dbus_is_property", False):
1657
# Create a new, but exactly alike, function
1658
# object, and decorate it to be a new D-Bus
1659
# property with the alternate D-Bus interface
1660
# name. Add it to the class.
1661
attr[attrname] = (dbus_service_property(
1662
alt_interface, attribute._dbus_signature,
1663
attribute._dbus_access,
1664
attribute._dbus_get_args_options
1665
["byte_arrays"])
1666
(copy_function(attribute)))
1667
# Copy annotations, if any
1668
try:
1669
attr[attrname]._dbus_annotations = dict(
1670
attribute._dbus_annotations)
1671
except AttributeError:
1672
pass
1673
# Is this a D-Bus interface?
1674
elif getattr(attribute, "_dbus_is_interface", False):
1675
# Create a new, but exactly alike, function
1676
# object. Decorate it to be a new D-Bus interface
1677
# with the alternate D-Bus interface name. Add it
1678
# to the class.
1679
attr[attrname] = (
1680
dbus_interface_annotations(alt_interface)
1681
(copy_function(attribute)))
1682
if deprecate:
1683
# Deprecate all alternate interfaces
1684
iname = "_AlternateDBusNames_interface_annotation{}"
1685
for interface_name in interface_names:
1686
1687
@dbus_interface_annotations(interface_name)
1688
def func(self):
1689
return {"org.freedesktop.DBus.Deprecated":
1690
"true"}
1691
# Find an unused name
1692
for aname in (iname.format(i)
1693
for i in itertools.count()):
1694
if aname not in attr:
1695
attr[aname] = func
1696
break
1697
if interface_names:
1698
# Replace the class with a new subclass of it with
1699
# methods, signals, etc. as created above.
1700
if sys.version_info.major == 2:
1701
cls = type(b"{}Alternate".format(cls.__name__),
1702
(cls, ), attr)
1703
else:
1704
cls = type("{}Alternate".format(cls.__name__),
1705
(cls, ), attr)
1706
return cls
1707
1708
return wrapper
1709
1710
1711
@alternate_dbus_interfaces({"se.recompile.Mandos":
1712
"se.bsnet.fukt.Mandos"})
707
1713
class ClientDBus(Client, DBusObjectWithProperties):
708
1714
"""A Client class using D-Bus
709
1715
710
1716
Attributes:
711
1717
dbus_object_path: dbus.ObjectPath
712
1718
bus: dbus.SystemBus()
713
1719
"""
714
1720
715
1721
runtime_expansions = (Client.runtime_expansions
716
+ (u"dbus_object_path",))
717
1722
+ ("dbus_object_path", ))
1723
1724
_interface = "se.recompile.Mandos.Client"
1725
718
1726
# dbus.service.Object doesn't use super(), so we can't either.
719
720
def __init__(self, bus = None, *args, **kwargs):
721
self._approvals_pending = 0
1727
1728
def __init__(self, bus=None, *args, **kwargs):
722
1729
self.bus = bus
723
1730
Client.__init__(self, *args, **kwargs)
724
1731
# Only now, when this client is initialized, can it show up on
725
1732
# the D-Bus
726
client_object_name = unicode(self.name).translate(
727
{ord(u"."): ord(u"_"),
728
ord(u"-"): ord(u"_")})
729
self.dbus_object_path = (dbus.ObjectPath
730
(u"/clients/" + client_object_name))
1733
client_object_name = str(self.name).translate(
1734
{ord("."): ord("_"),
1735
ord("-"): ord("_")})
1736
self.dbus_object_path = dbus.ObjectPath(
1737
"/clients/" + client_object_name)
731
1738
DBusObjectWithProperties.__init__(self, self.bus,
732
1739
self.dbus_object_path)
733
734
def _get_approvals_pending(self):
735
return self._approvals_pending
736
def _set_approvals_pending(self, value):
737
old_value = self._approvals_pending
738
self._approvals_pending = value
739
bval = bool(value)
740
if (hasattr(self, "dbus_object_path")
741
and bval is not bool(old_value)):
742
dbus_bool = dbus.Boolean(bval, variant_level=1)
743
self.PropertyChanged(dbus.String(u"ApprovalPending"),
744
dbus_bool)
745
746
approvals_pending = property(_get_approvals_pending,
747
_set_approvals_pending)
748
del _get_approvals_pending, _set_approvals_pending
749
750
@staticmethod
751
def _datetime_to_dbus(dt, variant_level=0):
752
"""Convert a UTC datetime.datetime() to a D-Bus type."""
753
return dbus.String(dt.isoformat(),
754
variant_level=variant_level)
755
756
def enable(self):
757
oldstate = getattr(self, u"enabled", False)
758
r = Client.enable(self)
759
if oldstate != self.enabled:
760
# Emit D-Bus signals
761
self.PropertyChanged(dbus.String(u"Enabled"),
762
dbus.Boolean(True, variant_level=1))
763
self.PropertyChanged(
764
dbus.String(u"LastEnabled"),
765
self._datetime_to_dbus(self.last_enabled,
766
variant_level=1))
767
return r
768
769
def disable(self, quiet = False):
770
oldstate = getattr(self, u"enabled", False)
771
r = Client.disable(self, quiet=quiet)
772
if not quiet and oldstate != self.enabled:
773
# Emit D-Bus signal
774
self.PropertyChanged(dbus.String(u"Enabled"),
775
dbus.Boolean(False, variant_level=1))
776
return r
777
1740
1741
def notifychangeproperty(transform_func, dbus_name,
1742
type_func=lambda x: x,
1743
variant_level=1,
1744
invalidate_only=False,
1745
_interface=_interface):
1746
""" Modify a variable so that it's a property which announces
1747
its changes to DBus.
1748
1749
transform_fun: Function that takes a value and a variant_level
1750
and transforms it to a D-Bus type.
1751
dbus_name: D-Bus name of the variable
1752
type_func: Function that transform the value before sending it
1753
to the D-Bus. Default: no transform
1754
variant_level: D-Bus variant level. Default: 1
1755
"""
1756
attrname = "_{}".format(dbus_name)
1757
1758
def setter(self, value):
1759
if hasattr(self, "dbus_object_path"):
1760
if (not hasattr(self, attrname) or
1761
type_func(getattr(self, attrname, None))
1762
!= type_func(value)):
1763
if invalidate_only:
1764
self.PropertiesChanged(
1765
_interface, dbus.Dictionary(),
1766
dbus.Array((dbus_name, )))
1767
else:
1768
dbus_value = transform_func(
1769
type_func(value),
1770
variant_level=variant_level)
1771
self.PropertyChanged(dbus.String(dbus_name),
1772
dbus_value)
1773
self.PropertiesChanged(
1774
_interface,
1775
dbus.Dictionary({dbus.String(dbus_name):
1776
dbus_value}),
1777
dbus.Array())
1778
setattr(self, attrname, value)
1779
1780
return property(lambda self: getattr(self, attrname), setter)
1781
1782
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1783
approvals_pending = notifychangeproperty(dbus.Boolean,
1784
"ApprovalPending",
1785
type_func=bool)
1786
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1787
last_enabled = notifychangeproperty(datetime_to_dbus,
1788
"LastEnabled")
1789
checker = notifychangeproperty(
1790
dbus.Boolean, "CheckerRunning",
1791
type_func=lambda checker: checker is not None)
1792
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1793
"LastCheckedOK")
1794
last_checker_status = notifychangeproperty(dbus.Int16,
1795
"LastCheckerStatus")
1796
last_approval_request = notifychangeproperty(
1797
datetime_to_dbus, "LastApprovalRequest")
1798
approved_by_default = notifychangeproperty(dbus.Boolean,
1799
"ApprovedByDefault")
1800
approval_delay = notifychangeproperty(
1801
dbus.UInt64, "ApprovalDelay",
1802
type_func=lambda td: td.total_seconds() * 1000)
1803
approval_duration = notifychangeproperty(
1804
dbus.UInt64, "ApprovalDuration",
1805
type_func=lambda td: td.total_seconds() * 1000)
1806
host = notifychangeproperty(dbus.String, "Host")
1807
timeout = notifychangeproperty(
1808
dbus.UInt64, "Timeout",
1809
type_func=lambda td: td.total_seconds() * 1000)
1810
extended_timeout = notifychangeproperty(
1811
dbus.UInt64, "ExtendedTimeout",
1812
type_func=lambda td: td.total_seconds() * 1000)
1813
interval = notifychangeproperty(
1814
dbus.UInt64, "Interval",
1815
type_func=lambda td: td.total_seconds() * 1000)
1816
checker_command = notifychangeproperty(dbus.String, "Checker")
1817
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1818
invalidate_only=True)
1819
1820
del notifychangeproperty
1821
778
1822
def __del__(self, *args, **kwargs):
779
1823
try:
780
1824
self.remove_from_connection()
781
1825
except LookupError:
782
1826
pass
783
if hasattr(DBusObjectWithProperties, u"__del__"):
1827
if hasattr(DBusObjectWithProperties, "__del__"):
784
1828
DBusObjectWithProperties.__del__(self, *args, **kwargs)
785
1829
Client.__del__(self, *args, **kwargs)
786
787
def checker_callback(self, pid, condition, command,
788
*args, **kwargs):
789
self.checker_callback_tag = None
790
self.checker = None
791
# Emit D-Bus signal
792
self.PropertyChanged(dbus.String(u"CheckerRunning"),
793
dbus.Boolean(False, variant_level=1))
794
if os.WIFEXITED(condition):
795
exitstatus = os.WEXITSTATUS(condition)
1830
1831
def checker_callback(self, source, condition,
1832
connection, command, *args, **kwargs):
1833
ret = Client.checker_callback(self, source, condition,
1834
connection, command, *args,
1835
**kwargs)
1836
exitstatus = self.last_checker_status
1837
if exitstatus >= 0:
796
1838
# Emit D-Bus signal
797
1839
self.CheckerCompleted(dbus.Int16(exitstatus),
798
dbus.Int64(condition),
1840
# This is specific to GNU libC
1841
dbus.Int64(exitstatus << 8),
799
1842
dbus.String(command))
800
1843
else:
801
1844
# Emit D-Bus signal
802
1845
self.CheckerCompleted(dbus.Int16(-1),
803
dbus.Int64(condition),
1846
dbus.Int64(
1847
# This is specific to GNU libC
1848
(exitstatus << 8)
1849
| self.last_checker_signal),
804
1850
dbus.String(command))
805
806
return Client.checker_callback(self, pid, condition, command,
807
*args, **kwargs)
808
809
def checked_ok(self, *args, **kwargs):
810
r = Client.checked_ok(self, *args, **kwargs)
811
# Emit D-Bus signal
812
self.PropertyChanged(
813
dbus.String(u"LastCheckedOK"),
814
(self._datetime_to_dbus(self.last_checked_ok,
815
variant_level=1)))
816
return r
817
1851
return ret
1852
818
1853
def start_checker(self, *args, **kwargs):
819
old_checker = self.checker
820
if self.checker is not None:
821
old_checker_pid = self.checker.pid
822
else:
823
old_checker_pid = None
1854
old_checker_pid = getattr(self.checker, "pid", None)
824
1855
r = Client.start_checker(self, *args, **kwargs)
825
1856
# Only if new checker process was started
826
1857
if (self.checker is not None
827
1858
and old_checker_pid != self.checker.pid):
828
1859
# Emit D-Bus signal
829
1860
self.CheckerStarted(self.current_checker_command)
830
self.PropertyChanged(
831
dbus.String(u"CheckerRunning"),
832
dbus.Boolean(True, variant_level=1))
833
return r
834
835
def stop_checker(self, *args, **kwargs):
836
old_checker = getattr(self, u"checker", None)
837
r = Client.stop_checker(self, *args, **kwargs)
838
if (old_checker is not None
839
and getattr(self, u"checker", None) is None):
840
self.PropertyChanged(dbus.String(u"CheckerRunning"),
841
dbus.Boolean(False, variant_level=1))
842
1861
return r
843
1862
844
1863
def _reset_approved(self):
845
self._approved = None
1864
self.approved = None
846
1865
return False
847
1866
848
1867
def approve(self, value=True):
1868
self.approved = value
1869
GLib.timeout_add(int(self.approval_duration.total_seconds()
1870
* 1000), self._reset_approved)
849
1871
self.send_changedstate()
850
self._approved = value
851
gobject.timeout_add(self._timedelta_to_milliseconds
852
(self.approval_duration),
853
self._reset_approved)
854
855
856
## D-Bus methods, signals & properties
857
_interface = u"se.bsnet.fukt.Mandos.Client"
858
859
## Signals
860
1872
1873
# D-Bus methods, signals & properties
1874
1875
# Interfaces
1876
1877
# Signals
1878
861
1879
# CheckerCompleted - signal
862
@dbus.service.signal(_interface, signature=u"nxs")
1880
@dbus.service.signal(_interface, signature="nxs")
863
1881
def CheckerCompleted(self, exitcode, waitstatus, command):
864
1882
"D-Bus signal"
865
1883
pass
866
1884
867
1885
# CheckerStarted - signal
868
@dbus.service.signal(_interface, signature=u"s")
1886
@dbus.service.signal(_interface, signature="s")
869
1887
def CheckerStarted(self, command):
870
1888
"D-Bus signal"
871
1889
pass
872
1890
873
1891
# PropertyChanged - signal
874
@dbus.service.signal(_interface, signature=u"sv")
1892
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1893
@dbus.service.signal(_interface, signature="sv")
875
1894
def PropertyChanged(self, property, value):
876
1895
"D-Bus signal"
877
1896
pass
878
1897
879
1898
# GotSecret - signal
880
1899
@dbus.service.signal(_interface)
881
1900
def GotSecret(self):
884
1903
server to mandos-client
885
1904
"""
886
1905
pass
887
1906
888
1907
# Rejected - signal
889
@dbus.service.signal(_interface, signature=u"s")
1908
@dbus.service.signal(_interface, signature="s")
890
1909
def Rejected(self, reason):
891
1910
"D-Bus signal"
892
1911
pass
893
1912
894
1913
# NeedApproval - signal
895
@dbus.service.signal(_interface, signature=u"tb")
1914
@dbus.service.signal(_interface, signature="tb")
896
1915
def NeedApproval(self, timeout, default):
897
1916
"D-Bus signal"
898
pass
899
900
## Methods
1917
return self.need_approval()
1918
1919
# Methods
901
1920
902
1921
# Approve - method
903
@dbus.service.method(_interface, in_signature=u"b")
1922
@dbus.service.method(_interface, in_signature="b")
904
1923
def Approve(self, value):
905
1924
self.approve(value)
906
1925
907
1926
# CheckedOK - method
908
1927
@dbus.service.method(_interface)
909
1928
def CheckedOK(self):
910
return self.checked_ok()
911
1929
self.checked_ok()
1930
912
1931
# Enable - method
1932
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
913
1933
@dbus.service.method(_interface)
914
1934
def Enable(self):
915
1935
"D-Bus method"
916
1936
self.enable()
917
1937
918
1938
# StartChecker - method
1939
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
919
1940
@dbus.service.method(_interface)
920
1941
def StartChecker(self):
921
1942
"D-Bus method"
922
1943
self.start_checker()
923
1944
924
1945
# Disable - method
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
925
1947
@dbus.service.method(_interface)
926
1948
def Disable(self):
927
1949
"D-Bus method"
928
1950
self.disable()
929
1951
930
1952
# StopChecker - method
1953
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
931
1954
@dbus.service.method(_interface)
932
1955
def StopChecker(self):
933
1956
self.stop_checker()
934
935
## Properties
936
1957
1958
# Properties
1959
937
1960
# ApprovalPending - property
938
@dbus_service_property(_interface, signature=u"b", access=u"read")
1961
@dbus_service_property(_interface, signature="b", access="read")
939
1962
def ApprovalPending_dbus_property(self):
940
1963
return dbus.Boolean(bool(self.approvals_pending))
941
1964
942
1965
# ApprovedByDefault - property
943
@dbus_service_property(_interface, signature=u"b",
944
access=u"readwrite")
1966
@dbus_service_property(_interface,
1967
signature="b",
1968
access="readwrite")
945
1969
def ApprovedByDefault_dbus_property(self, value=None):
946
1970
if value is None: # get
947
1971
return dbus.Boolean(self.approved_by_default)
948
1972
self.approved_by_default = bool(value)
949
# Emit D-Bus signal
950
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
951
dbus.Boolean(value, variant_level=1))
952
1973
953
1974
# ApprovalDelay - property
954
@dbus_service_property(_interface, signature=u"t",
955
access=u"readwrite")
1975
@dbus_service_property(_interface,
1976
signature="t",
1977
access="readwrite")
956
1978
def ApprovalDelay_dbus_property(self, value=None):
957
1979
if value is None: # get
958
return dbus.UInt64(self.approval_delay_milliseconds())
1980
return dbus.UInt64(self.approval_delay.total_seconds()
1981
* 1000)
959
1982
self.approval_delay = datetime.timedelta(0, 0, 0, value)
960
# Emit D-Bus signal
961
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
962
dbus.UInt64(value, variant_level=1))
963
1983
964
1984
# ApprovalDuration - property
965
@dbus_service_property(_interface, signature=u"t",
966
access=u"readwrite")
1985
@dbus_service_property(_interface,
1986
signature="t",
1987
access="readwrite")
967
1988
def ApprovalDuration_dbus_property(self, value=None):
968
1989
if value is None: # get
969
return dbus.UInt64(self._timedelta_to_milliseconds(
970
self.approval_duration))
1990
return dbus.UInt64(self.approval_duration.total_seconds()
1991
* 1000)
971
1992
self.approval_duration = datetime.timedelta(0, 0, 0, value)
972
# Emit D-Bus signal
973
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
974
dbus.UInt64(value, variant_level=1))
975
1993
976
1994
# Name - property
977
@dbus_service_property(_interface, signature=u"s", access=u"read")
1995
@dbus_annotations(
1996
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1997
@dbus_service_property(_interface, signature="s", access="read")
978
1998
def Name_dbus_property(self):
979
1999
return dbus.String(self.name)
980
2000
981
2001
# Fingerprint - property
982
@dbus_service_property(_interface, signature=u"s", access=u"read")
2002
@dbus_annotations(
2003
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2004
@dbus_service_property(_interface, signature="s", access="read")
983
2005
def Fingerprint_dbus_property(self):
984
2006
return dbus.String(self.fingerprint)
985
2007
986
2008
# Host - property
987
@dbus_service_property(_interface, signature=u"s",
988
access=u"readwrite")
2009
@dbus_service_property(_interface,
2010
signature="s",
2011
access="readwrite")
989
2012
def Host_dbus_property(self, value=None):
990
2013
if value is None: # get
991
2014
return dbus.String(self.host)
992
self.host = value
993
# Emit D-Bus signal
994
self.PropertyChanged(dbus.String(u"Host"),
995
dbus.String(value, variant_level=1))
996
2015
self.host = str(value)
2016
997
2017
# Created - property
998
@dbus_service_property(_interface, signature=u"s", access=u"read")
2018
@dbus_annotations(
2019
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2020
@dbus_service_property(_interface, signature="s", access="read")
999
2021
def Created_dbus_property(self):
1000
return dbus.String(self._datetime_to_dbus(self.created))
1001
2022
return datetime_to_dbus(self.created)
2023
1002
2024
# LastEnabled - property
1003
@dbus_service_property(_interface, signature=u"s", access=u"read")
2025
@dbus_service_property(_interface, signature="s", access="read")
1004
2026
def LastEnabled_dbus_property(self):
1005
if self.last_enabled is None:
1006
return dbus.String(u"")
1007
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1008
2027
return datetime_to_dbus(self.last_enabled)
2028
1009
2029
# Enabled - property
1010
@dbus_service_property(_interface, signature=u"b",
1011
access=u"readwrite")
2030
@dbus_service_property(_interface,
2031
signature="b",
2032
access="readwrite")
1012
2033
def Enabled_dbus_property(self, value=None):
1013
2034
if value is None: # get
1014
2035
return dbus.Boolean(self.enabled)
1016
2037
self.enable()
1017
2038
else:
1018
2039
self.disable()
1019
2040
1020
2041
# LastCheckedOK - property
1021
@dbus_service_property(_interface, signature=u"s",
1022
access=u"readwrite")
2042
@dbus_service_property(_interface,
2043
signature="s",
2044
access="readwrite")
1023
2045
def LastCheckedOK_dbus_property(self, value=None):
1024
2046
if value is not None:
1025
2047
self.checked_ok()
1026
2048
return
1027
if self.last_checked_ok is None:
1028
return dbus.String(u"")
1029
return dbus.String(self._datetime_to_dbus(self
1030
.last_checked_ok))
1031
2049
return datetime_to_dbus(self.last_checked_ok)
2050
2051
# LastCheckerStatus - property
2052
@dbus_service_property(_interface, signature="n", access="read")
2053
def LastCheckerStatus_dbus_property(self):
2054
return dbus.Int16(self.last_checker_status)
2055
2056
# Expires - property
2057
@dbus_service_property(_interface, signature="s", access="read")
2058
def Expires_dbus_property(self):
2059
return datetime_to_dbus(self.expires)
2060
2061
# LastApprovalRequest - property
2062
@dbus_service_property(_interface, signature="s", access="read")
2063
def LastApprovalRequest_dbus_property(self):
2064
return datetime_to_dbus(self.last_approval_request)
2065
1032
2066
# Timeout - property
1033
@dbus_service_property(_interface, signature=u"t",
1034
access=u"readwrite")
2067
@dbus_service_property(_interface,
2068
signature="t",
2069
access="readwrite")
1035
2070
def Timeout_dbus_property(self, value=None):
1036
2071
if value is None: # get
1037
return dbus.UInt64(self.timeout_milliseconds())
2072
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2073
old_timeout = self.timeout
1038
2074
self.timeout = datetime.timedelta(0, 0, 0, value)
1039
# Emit D-Bus signal
1040
self.PropertyChanged(dbus.String(u"Timeout"),
1041
dbus.UInt64(value, variant_level=1))
1042
if getattr(self, u"disable_initiator_tag", None) is None:
1043
return
1044
# Reschedule timeout
1045
gobject.source_remove(self.disable_initiator_tag)
1046
self.disable_initiator_tag = None
1047
time_to_die = (self.
1048
_timedelta_to_milliseconds((self
1049
.last_checked_ok
1050
+ self.timeout)
1051
- datetime.datetime
1052
.utcnow()))
1053
if time_to_die <= 0:
1054
# The timeout has passed
1055
self.disable()
1056
else:
1057
self.disable_initiator_tag = (gobject.timeout_add
1058
(time_to_die, self.disable))
1059
2075
# Reschedule disabling
2076
if self.enabled:
2077
now = datetime.datetime.utcnow()
2078
self.expires += self.timeout - old_timeout
2079
if self.expires <= now:
2080
# The timeout has passed
2081
self.disable()
2082
else:
2083
if (getattr(self, "disable_initiator_tag", None)
2084
is None):
2085
return
2086
GLib.source_remove(self.disable_initiator_tag)
2087
self.disable_initiator_tag = GLib.timeout_add(
2088
int((self.expires - now).total_seconds() * 1000),
2089
self.disable)
2090
2091
# ExtendedTimeout - property
2092
@dbus_service_property(_interface,
2093
signature="t",
2094
access="readwrite")
2095
def ExtendedTimeout_dbus_property(self, value=None):
2096
if value is None: # get
2097
return dbus.UInt64(self.extended_timeout.total_seconds()
2098
* 1000)
2099
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2100
1060
2101
# Interval - property
1061
@dbus_service_property(_interface, signature=u"t",
1062
access=u"readwrite")
2102
@dbus_service_property(_interface,
2103
signature="t",
2104
access="readwrite")
1063
2105
def Interval_dbus_property(self, value=None):
1064
2106
if value is None: # get
1065
return dbus.UInt64(self.interval_milliseconds())
2107
return dbus.UInt64(self.interval.total_seconds() * 1000)
1066
2108
self.interval = datetime.timedelta(0, 0, 0, value)
1067
# Emit D-Bus signal
1068
self.PropertyChanged(dbus.String(u"Interval"),
1069
dbus.UInt64(value, variant_level=1))
1070
if getattr(self, u"checker_initiator_tag", None) is None:
2109
if getattr(self, "checker_initiator_tag", None) is None:
1071
2110
return
1072
# Reschedule checker run
1073
gobject.source_remove(self.checker_initiator_tag)
1074
self.checker_initiator_tag = (gobject.timeout_add
1075
(value, self.start_checker))
1076
self.start_checker() # Start one now, too
2111
if self.enabled:
2112
# Reschedule checker run
2113
GLib.source_remove(self.checker_initiator_tag)
2114
self.checker_initiator_tag = GLib.timeout_add(
2115
value, self.start_checker)
2116
self.start_checker() # Start one now, too
1077
2117
1078
2118
# Checker - property
1079
@dbus_service_property(_interface, signature=u"s",
1080
access=u"readwrite")
2119
@dbus_service_property(_interface,
2120
signature="s",
2121
access="readwrite")
1081
2122
def Checker_dbus_property(self, value=None):
1082
2123
if value is None: # get
1083
2124
return dbus.String(self.checker_command)
1084
self.checker_command = value
1085
# Emit D-Bus signal
1086
self.PropertyChanged(dbus.String(u"Checker"),
1087
dbus.String(self.checker_command,
1088
variant_level=1))
1089
2125
self.checker_command = str(value)
2126
1090
2127
# CheckerRunning - property
1091
@dbus_service_property(_interface, signature=u"b",
1092
access=u"readwrite")
2128
@dbus_service_property(_interface,
2129
signature="b",
2130
access="readwrite")
1093
2131
def CheckerRunning_dbus_property(self, value=None):
1094
2132
if value is None: # get
1095
2133
return dbus.Boolean(self.checker is not None)
1097
2135
self.start_checker()
1098
2136
else:
1099
2137
self.stop_checker()
1100
2138
1101
2139
# ObjectPath - property
1102
@dbus_service_property(_interface, signature=u"o", access=u"read")
2140
@dbus_annotations(
2141
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2142
"org.freedesktop.DBus.Deprecated": "true"})
2143
@dbus_service_property(_interface, signature="o", access="read")
1103
2144
def ObjectPath_dbus_property(self):
1104
return self.dbus_object_path # is already a dbus.ObjectPath
1105
2145
return self.dbus_object_path # is already a dbus.ObjectPath
2146
1106
2147
# Secret = property
1107
@dbus_service_property(_interface, signature=u"ay",
1108
access=u"write", byte_arrays=True)
2148
@dbus_annotations(
2149
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2150
"invalidates"})
2151
@dbus_service_property(_interface,
2152
signature="ay",
2153
access="write",
2154
byte_arrays=True)
1109
2155
def Secret_dbus_property(self, value):
1110
self.secret = str(value)
1111
2156
self.secret = bytes(value)
2157
1112
2158
del _interface
1113
2159
1114
2160
1117
2163
self._pipe = child_pipe
1118
2164
self._pipe.send(('init', fpr, address))
1119
2165
if not self._pipe.recv():
1120
raise KeyError()
2166
raise KeyError(fpr)
1121
2167
1122
2168
def __getattribute__(self, name):
1123
if(name == '_pipe'):
2169
if name == '_pipe':
1124
2170
return super(ProxyClient, self).__getattribute__(name)
1125
2171
self._pipe.send(('getattr', name))
1126
2172
data = self._pipe.recv()
1127
2173
if data[0] == 'data':
1128
2174
return data[1]
1129
2175
if data[0] == 'function':
2176
1130
2177
def func(*args, **kwargs):
1131
2178
self._pipe.send(('funcall', name, args, kwargs))
1132
2179
return self._pipe.recv()[1]
2180
1133
2181
return func
1134
2182
1135
2183
def __setattr__(self, name, value):
1136
if(name == '_pipe'):
2184
if name == '_pipe':
1137
2185
return super(ProxyClient, self).__setattr__(name, value)
1138
2186
self._pipe.send(('setattr', name, value))
1139
2187
1140
2188
1141
2189
class ClientHandler(socketserver.BaseRequestHandler, object):
1142
2190
"""A class to handle client connections.
1143
2191
1144
2192
Instantiated once for each connection to handle it.
1145
2193
Note: This will run in its own forked process."""
1146
2194
1147
2195
def handle(self):
1148
2196
with contextlib.closing(self.server.child_pipe) as child_pipe:
1149
logger.info(u"TCP connection from: %s",
1150
unicode(self.client_address))
1151
logger.debug(u"Pipe FD: %d",
2197
logger.info("TCP connection from: %s",
2198
str(self.client_address))
2199
logger.debug("Pipe FD: %d",
1152
2200
self.server.child_pipe.fileno())
1153
2201
1154
session = (gnutls.connection
1155
.ClientSession(self.request,
1156
gnutls.connection
1157
.X509Credentials()))
1158
1159
# Note: gnutls.connection.X509Credentials is really a
1160
# generic GnuTLS certificate credentials object so long as
1161
# no X.509 keys are added to it. Therefore, we can use it
1162
# here despite using OpenPGP certificates.
1163
1164
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1165
# u"+AES-256-CBC", u"+SHA1",
1166
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1167
# u"+DHE-DSS"))
2202
session = gnutls.ClientSession(self.request)
2203
2204
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2205
# "+AES-256-CBC", "+SHA1",
2206
# "+COMP-NULL", "+CTYPE-OPENPGP",
2207
# "+DHE-DSS"))
1168
2208
# Use a fallback default, since this MUST be set.
1169
2209
priority = self.server.gnutls_priority
1170
2210
if priority is None:
1171
priority = u"NORMAL"
1172
(gnutls.library.functions
1173
.gnutls_priority_set_direct(session._c_object,
1174
priority, None))
2211
priority = "NORMAL"
2212
gnutls.priority_set_direct(session._c_object,
2213
priority.encode("utf-8"),
2214
None)
1175
2215
1176
2216
# Start communication using the Mandos protocol
1177
2217
# Get protocol number
1178
2218
line = self.request.makefile().readline()
1179
logger.debug(u"Protocol version: %r", line)
2219
logger.debug("Protocol version: %r", line)
1180
2220
try:
1181
2221
if int(line.strip().split()[0]) > 1:
1182
raise RuntimeError
1183
except (ValueError, IndexError, RuntimeError), error:
1184
logger.error(u"Unknown protocol version: %s", error)
2222
raise RuntimeError(line)
2223
except (ValueError, IndexError, RuntimeError) as error:
2224
logger.error("Unknown protocol version: %s", error)
1185
2225
return
1186
2226
1187
2227
# Start GnuTLS connection
1188
2228
try:
1189
2229
session.handshake()
1190
except gnutls.errors.GNUTLSError, error:
1191
logger.warning(u"Handshake failed: %s", error)
2230
except gnutls.Error as error:
2231
logger.warning("Handshake failed: %s", error)
1192
2232
# Do not run session.bye() here: the session is not
1193
2233
# established. Just abandon the request.
1194
2234
return
1195
logger.debug(u"Handshake succeeded")
2235
logger.debug("Handshake succeeded")
1196
2236
1197
2237
approval_required = False
1198
2238
try:
1199
2239
try:
1200
fpr = self.fingerprint(self.peer_certificate
1201
(session))
1202
except (TypeError, gnutls.errors.GNUTLSError), error:
1203
logger.warning(u"Bad certificate: %s", error)
2240
fpr = self.fingerprint(
2241
self.peer_certificate(session))
2242
except (TypeError, gnutls.Error) as error:
2243
logger.warning("Bad certificate: %s", error)
1204
2244
return
1205
logger.debug(u"Fingerprint: %s", fpr)
2245
logger.debug("Fingerprint: %s", fpr)
1206
2246
1207
2247
try:
1208
2248
client = ProxyClient(child_pipe, fpr,
1209
2249
self.client_address)
1210
2250
except KeyError:
1211
2251
return
1212
2252
1213
2253
if client.approval_delay:
1214
2254
delay = client.approval_delay
1215
2255
client.approvals_pending += 1
1216
2256
approval_required = True
1217
2257
1218
2258
while True:
1219
2259
if not client.enabled:
1220
logger.warning(u"Client %s is disabled",
1221
client.name)
2260
logger.info("Client %s is disabled",
2261
client.name)
1222
2262
if self.server.use_dbus:
1223
2263
# Emit D-Bus signal
1224
client.Rejected("Disabled")
2264
client.Rejected("Disabled")
1225
2265
return
1226
1227
if client._approved or not client.approval_delay:
1228
#We are approved or approval is disabled
2266
2267
if client.approved or not client.approval_delay:
2268
# We are approved or approval is disabled
1229
2269
break
1230
elif client._approved is None:
1231
logger.info(u"Client %s needs approval",
2270
elif client.approved is None:
2271
logger.info("Client %s needs approval",
1232
2272
client.name)
1233
2273
if self.server.use_dbus:
1234
2274
# Emit D-Bus signal
1235
2275
client.NeedApproval(
1236
client.approval_delay_milliseconds(),
1237
client.approved_by_default)
2276
client.approval_delay.total_seconds()
2277
* 1000, client.approved_by_default)
1238
2278
else:
1239
logger.warning(u"Client %s was not approved",
2279
logger.warning("Client %s was not approved",
1240
2280
client.name)
1241
2281
if self.server.use_dbus:
1242
2282
# Emit D-Bus signal
1243
2283
client.Rejected("Denied")
1244
2284
return
1245
1246
#wait until timeout or approved
1247
#x = float(client._timedelta_to_milliseconds(delay))
2285
2286
# wait until timeout or approved
1248
2287
time = datetime.datetime.now()
1249
2288
client.changedstate.acquire()
1250
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2289
client.changedstate.wait(delay.total_seconds())
1251
2290
client.changedstate.release()
1252
2291
time2 = datetime.datetime.now()
1253
2292
if (time2 - time) >= delay:
1263
2302
break
1264
2303
else:
1265
2304
delay -= time2 - time
1266
1267
sent_size = 0
1268
while sent_size < len(client.secret):
1269
try:
1270
sent = session.send(client.secret[sent_size:])
1271
except (gnutls.errors.GNUTLSError), error:
1272
logger.warning("gnutls send failed")
1273
return
1274
logger.debug(u"Sent: %d, remaining: %d",
1275
sent, len(client.secret)
1276
- (sent_size + sent))
1277
sent_size += sent
1278
1279
logger.info(u"Sending secret to %s", client.name)
1280
# bump the timeout as if seen
1281
client.checked_ok()
2305
2306
try:
2307
session.send(client.secret)
2308
except gnutls.Error as error:
2309
logger.warning("gnutls send failed",
2310
exc_info=error)
2311
return
2312
2313
logger.info("Sending secret to %s", client.name)
2314
# bump the timeout using extended_timeout
2315
client.bump_timeout(client.extended_timeout)
1282
2316
if self.server.use_dbus:
1283
2317
# Emit D-Bus signal
1284
2318
client.GotSecret()
1285
2319
1286
2320
finally:
1287
2321
if approval_required:
1288
2322
client.approvals_pending -= 1
1289
2323
try:
1290
2324
session.bye()
1291
except (gnutls.errors.GNUTLSError), error:
1292
logger.warning("GnuTLS bye failed")
1293
2325
except gnutls.Error as error:
2326
logger.warning("GnuTLS bye failed",
2327
exc_info=error)
2328
1294
2329
@staticmethod
1295
2330
def peer_certificate(session):
1296
2331
"Return the peer's OpenPGP certificate as a bytestring"
1297
2332
# If not an OpenPGP certificate...
1298
if (gnutls.library.functions
1299
.gnutls_certificate_type_get(session._c_object)
1300
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1301
# ...do the normal thing
1302
return session.peer_certificate
2333
if (gnutls.certificate_type_get(session._c_object)
2334
!= gnutls.CRT_OPENPGP):
2335
# ...return invalid data
2336
return b""
1303
2337
list_size = ctypes.c_uint(1)
1304
cert_list = (gnutls.library.functions
1305
.gnutls_certificate_get_peers
2338
cert_list = (gnutls.certificate_get_peers
1306
2339
(session._c_object, ctypes.byref(list_size)))
1307
2340
if not bool(cert_list) and list_size.value != 0:
1308
raise gnutls.errors.GNUTLSError(u"error getting peer"
1309
u" certificate")
2341
raise gnutls.Error("error getting peer certificate")
1310
2342
if list_size.value == 0:
1311
2343
return None
1312
2344
cert = cert_list[0]
1313
2345
return ctypes.string_at(cert.data, cert.size)
1314
2346
1315
2347
@staticmethod
1316
2348
def fingerprint(openpgp):
1317
2349
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1318
2350
# New GnuTLS "datum" with the OpenPGP public key
1319
datum = (gnutls.library.types
1320
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1321
ctypes.POINTER
1322
(ctypes.c_ubyte)),
1323
ctypes.c_uint(len(openpgp))))
2351
datum = gnutls.datum_t(
2352
ctypes.cast(ctypes.c_char_p(openpgp),
2353
ctypes.POINTER(ctypes.c_ubyte)),
2354
ctypes.c_uint(len(openpgp)))
1324
2355
# New empty GnuTLS certificate
1325
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1326
(gnutls.library.functions
1327
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2356
crt = gnutls.openpgp_crt_t()
2357
gnutls.openpgp_crt_init(ctypes.byref(crt))
1328
2358
# Import the OpenPGP public key into the certificate
1329
(gnutls.library.functions
1330
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1331
gnutls.library.constants
1332
.GNUTLS_OPENPGP_FMT_RAW))
2359
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2360
gnutls.OPENPGP_FMT_RAW)
1333
2361
# Verify the self signature in the key
1334
2362
crtverify = ctypes.c_uint()
1335
(gnutls.library.functions
1336
.gnutls_openpgp_crt_verify_self(crt, 0,
1337
ctypes.byref(crtverify)))
2363
gnutls.openpgp_crt_verify_self(crt, 0,
2364
ctypes.byref(crtverify))
1338
2365
if crtverify.value != 0:
1339
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1340
raise (gnutls.errors.CertificateSecurityError
1341
(u"Verify failed"))
2366
gnutls.openpgp_crt_deinit(crt)
2367
raise gnutls.CertificateSecurityError("Verify failed")
1342
2368
# New buffer for the fingerprint
1343
2369
buf = ctypes.create_string_buffer(20)
1344
2370
buf_len = ctypes.c_size_t()
1345
2371
# Get the fingerprint from the certificate into the buffer
1346
(gnutls.library.functions
1347
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1348
ctypes.byref(buf_len)))
2372
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2373
ctypes.byref(buf_len))
1349
2374
# Deinit the certificate
1350
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2375
gnutls.openpgp_crt_deinit(crt)
1351
2376
# Convert the buffer to a Python bytestring
1352
2377
fpr = ctypes.string_at(buf, buf_len.value)
1353
2378
# Convert the bytestring to hexadecimal notation
1354
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2379
hex_fpr = binascii.hexlify(fpr).upper()
1355
2380
return hex_fpr
1356
2381
1357
2382
1358
2383
class MultiprocessingMixIn(object):
1359
2384
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2385
1360
2386
def sub_process_main(self, request, address):
1361
2387
try:
1362
2388
self.finish_request(request, address)
1363
except:
2389
except Exception:
1364
2390
self.handle_error(request, address)
1365
2391
self.close_request(request)
1366
2392
1367
2393
def process_request(self, request, address):
1368
2394
"""Start a new process to process the request."""
1369
multiprocessing.Process(target = self.sub_process_main,
1370
args = (request, address)).start()
2395
proc = multiprocessing.Process(target=self.sub_process_main,
2396
args=(request, address))
2397
proc.start()
2398
return proc
2399
1371
2400
1372
2401
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1373
2402
""" adds a pipe to the MixIn """
2403
1374
2404
def process_request(self, request, client_address):
1375
2405
"""Overrides and wraps the original process_request().
1376
2406
1377
2407
This function creates a new pipe in self.pipe
1378
2408
"""
1379
2409
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1380
2410
1381
super(MultiprocessingMixInWithPipe,
1382
self).process_request(request, client_address)
2411
proc = MultiprocessingMixIn.process_request(self, request,
2412
client_address)
1383
2413
self.child_pipe.close()
1384
self.add_pipe(parent_pipe)
2414
self.add_pipe(parent_pipe, proc)
1385
2415
1386
def add_pipe(self, parent_pipe):
2416
def add_pipe(self, parent_pipe, proc):
1387
2417
"""Dummy function; override as necessary"""
1388
pass
2418
raise NotImplementedError()
2419
1389
2420
1390
2421
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1391
2422
socketserver.TCPServer, object):
1392
2423
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1393
2424
1394
2425
Attributes:
1395
2426
enabled: Boolean; whether this server is activated yet
1396
2427
interface: None or a network interface name (string)
1397
2428
use_ipv6: Boolean; to use IPv6 or not
1398
2429
"""
2430
1399
2431
def __init__(self, server_address, RequestHandlerClass,
1400
interface=None, use_ipv6=True):
2432
interface=None,
2433
use_ipv6=True,
2434
socketfd=None):
2435
"""If socketfd is set, use that file descriptor instead of
2436
creating a new one with socket.socket().
2437
"""
1401
2438
self.interface = interface
1402
2439
if use_ipv6:
1403
2440
self.address_family = socket.AF_INET6
2441
if socketfd is not None:
2442
# Save the file descriptor
2443
self.socketfd = socketfd
2444
# Save the original socket.socket() function
2445
self.socket_socket = socket.socket
2446
2447
# To implement --socket, we monkey patch socket.socket.
2448
#
2449
# (When socketserver.TCPServer is a new-style class, we
2450
# could make self.socket into a property instead of monkey
2451
# patching socket.socket.)
2452
#
2453
# Create a one-time-only replacement for socket.socket()
2454
@functools.wraps(socket.socket)
2455
def socket_wrapper(*args, **kwargs):
2456
# Restore original function so subsequent calls are
2457
# not affected.
2458
socket.socket = self.socket_socket
2459
del self.socket_socket
2460
# This time only, return a new socket object from the
2461
# saved file descriptor.
2462
return socket.fromfd(self.socketfd, *args, **kwargs)
2463
# Replace socket.socket() function with wrapper
2464
socket.socket = socket_wrapper
2465
# The socketserver.TCPServer.__init__ will call
2466
# socket.socket(), which might be our replacement,
2467
# socket_wrapper(), if socketfd was set.
1404
2468
socketserver.TCPServer.__init__(self, server_address,
1405
2469
RequestHandlerClass)
2470
1406
2471
def server_bind(self):
1407
2472
"""This overrides the normal server_bind() function
1408
2473
to bind to an interface if one was specified, and also NOT to
1409
2474
bind to an address or port if they were not specified."""
2475
global SO_BINDTODEVICE
1410
2476
if self.interface is not None:
1411
2477
if SO_BINDTODEVICE is None:
1412
logger.error(u"SO_BINDTODEVICE does not exist;"
1413
u" cannot bind to interface %s",
1414
self.interface)
1415
else:
1416
try:
1417
self.socket.setsockopt(socket.SOL_SOCKET,
1418
SO_BINDTODEVICE,
1419
str(self.interface
1420
+ u'\0'))
1421
except socket.error, error:
1422
if error[0] == errno.EPERM:
1423
logger.error(u"No permission to"
1424
u" bind to interface %s",
1425
self.interface)
1426
elif error[0] == errno.ENOPROTOOPT:
1427
logger.error(u"SO_BINDTODEVICE not available;"
1428
u" cannot bind to interface %s",
1429
self.interface)
1430
else:
1431
raise
2478
# Fall back to a hard-coded value which seems to be
2479
# common enough.
2480
logger.warning("SO_BINDTODEVICE not found, trying 25")
2481
SO_BINDTODEVICE = 25
2482
try:
2483
self.socket.setsockopt(
2484
socket.SOL_SOCKET, SO_BINDTODEVICE,
2485
(self.interface + "\0").encode("utf-8"))
2486
except socket.error as error:
2487
if error.errno == errno.EPERM:
2488
logger.error("No permission to bind to"
2489
" interface %s", self.interface)
2490
elif error.errno == errno.ENOPROTOOPT:
2491
logger.error("SO_BINDTODEVICE not available;"
2492
" cannot bind to interface %s",
2493
self.interface)
2494
elif error.errno == errno.ENODEV:
2495
logger.error("Interface %s does not exist,"
2496
" cannot bind", self.interface)
2497
else:
2498
raise
1432
2499
# Only bind(2) the socket if we really need to.
1433
2500
if self.server_address[0] or self.server_address[1]:
1434
2501
if not self.server_address[0]:
1435
2502
if self.address_family == socket.AF_INET6:
1436
any_address = u"::" # in6addr_any
2503
any_address = "::" # in6addr_any
1437
2504
else:
1438
any_address = socket.INADDR_ANY
2505
any_address = "0.0.0.0" # INADDR_ANY
1439
2506
self.server_address = (any_address,
1440
2507
self.server_address[1])
1441
2508
elif not self.server_address[1]:
1442
self.server_address = (self.server_address[0],
1443
0)
2509
self.server_address = (self.server_address[0], 0)
1444
2510
# if self.interface:
1445
2511
# self.server_address = (self.server_address[0],
1446
2512
# 0, # port
1452
2518
1453
2519
class MandosServer(IPv6_TCPServer):
1454
2520
"""Mandos server.
1455
2521
1456
2522
Attributes:
1457
2523
clients: set of Client objects
1458
2524
gnutls_priority GnuTLS priority string
1459
2525
use_dbus: Boolean; to emit D-Bus signals or not
1460
1461
Assumes a gobject.MainLoop event loop.
2526
2527
Assumes a GLib.MainLoop event loop.
1462
2528
"""
2529
1463
2530
def __init__(self, server_address, RequestHandlerClass,
1464
interface=None, use_ipv6=True, clients=None,
1465
gnutls_priority=None, use_dbus=True):
2531
interface=None,
2532
use_ipv6=True,
2533
clients=None,
2534
gnutls_priority=None,
2535
use_dbus=True,
2536
socketfd=None):
1466
2537
self.enabled = False
1467
2538
self.clients = clients
1468
2539
if self.clients is None:
1469
self.clients = set()
2540
self.clients = {}
1470
2541
self.use_dbus = use_dbus
1471
2542
self.gnutls_priority = gnutls_priority
1472
2543
IPv6_TCPServer.__init__(self, server_address,
1473
2544
RequestHandlerClass,
1474
interface = interface,
1475
use_ipv6 = use_ipv6)
2545
interface=interface,
2546
use_ipv6=use_ipv6,
2547
socketfd=socketfd)
2548
1476
2549
def server_activate(self):
1477
2550
if self.enabled:
1478
2551
return socketserver.TCPServer.server_activate(self)
2552
1479
2553
def enable(self):
1480
2554
self.enabled = True
1481
def add_pipe(self, parent_pipe):
2555
2556
def add_pipe(self, parent_pipe, proc):
1482
2557
# Call "handle_ipc" for both data and EOF events
1483
gobject.io_add_watch(parent_pipe.fileno(),
1484
gobject.IO_IN | gobject.IO_HUP,
1485
functools.partial(self.handle_ipc,
1486
parent_pipe = parent_pipe))
1487
1488
def handle_ipc(self, source, condition, parent_pipe=None,
2558
GLib.io_add_watch(
2559
parent_pipe.fileno(),
2560
GLib.IO_IN | GLib.IO_HUP,
2561
functools.partial(self.handle_ipc,
2562
parent_pipe=parent_pipe,
2563
proc=proc))
2564
2565
def handle_ipc(self, source, condition,
2566
parent_pipe=None,
2567
proc=None,
1489
2568
client_object=None):
1490
condition_names = {
1491
gobject.IO_IN: u"IN", # There is data to read.
1492
gobject.IO_OUT: u"OUT", # Data can be written (without
1493
# blocking).
1494
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1495
gobject.IO_ERR: u"ERR", # Error condition.
1496
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1497
# broken, usually for pipes and
1498
# sockets).
1499
}
1500
conditions_string = ' | '.join(name
1501
for cond, name in
1502
condition_names.iteritems()
1503
if cond & condition)
1504
# error or the other end of multiprocessing.Pipe has closed
1505
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2569
# error, or the other end of multiprocessing.Pipe has closed
2570
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2571
# Wait for other process to exit
2572
proc.join()
1506
2573
return False
1507
2574
1508
2575
# Read a request from the child
1509
2576
request = parent_pipe.recv()
1510
2577
command = request[0]
1511
2578
1512
2579
if command == 'init':
1513
2580
fpr = request[1]
1514
2581
address = request[2]
1515
1516
for c in self.clients:
2582
2583
for c in self.clients.values():
1517
2584
if c.fingerprint == fpr:
1518
2585
client = c
1519
2586
break
1520
2587
else:
1521
logger.warning(u"Client not found for fingerprint: %s, ad"
1522
u"dress: %s", fpr, address)
2588
logger.info("Client not found for fingerprint: %s, ad"
2589
"dress: %s", fpr, address)
1523
2590
if self.use_dbus:
1524
2591
# Emit D-Bus signal
1525
mandos_dbus_service.ClientNotFound(fpr, address[0])
2592
mandos_dbus_service.ClientNotFound(fpr,
2593
address[0])
1526
2594
parent_pipe.send(False)
1527
2595
return False
1528
1529
gobject.io_add_watch(parent_pipe.fileno(),
1530
gobject.IO_IN | gobject.IO_HUP,
1531
functools.partial(self.handle_ipc,
1532
parent_pipe = parent_pipe,
1533
client_object = client))
2596
2597
GLib.io_add_watch(
2598
parent_pipe.fileno(),
2599
GLib.IO_IN | GLib.IO_HUP,
2600
functools.partial(self.handle_ipc,
2601
parent_pipe=parent_pipe,
2602
proc=proc,
2603
client_object=client))
1534
2604
parent_pipe.send(True)
1535
# remove the old hook in favor of the new above hook on same fileno
2605
# remove the old hook in favor of the new above hook on
2606
# same fileno
1536
2607
return False
1537
2608
if command == 'funcall':
1538
2609
funcname = request[1]
1539
2610
args = request[2]
1540
2611
kwargs = request[3]
1541
1542
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2612
2613
parent_pipe.send(('data', getattr(client_object,
2614
funcname)(*args,
2615
**kwargs)))
1543
2616
1544
2617
if command == 'getattr':
1545
2618
attrname = request[1]
1546
if callable(client_object.__getattribute__(attrname)):
1547
parent_pipe.send(('function',))
2619
if isinstance(client_object.__getattribute__(attrname),
2620
collections.Callable):
2621
parent_pipe.send(('function', ))
1548
2622
else:
1549
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1550
2623
parent_pipe.send((
2624
'data', client_object.__getattribute__(attrname)))
2625
1551
2626
if command == 'setattr':
1552
2627
attrname = request[1]
1553
2628
value = request[2]
1556
2631
return True
1557
2632
1558
2633
2634
def rfc3339_duration_to_delta(duration):
2635
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2636
2637
>>> rfc3339_duration_to_delta("P7D")
2638
datetime.timedelta(7)
2639
>>> rfc3339_duration_to_delta("PT60S")
2640
datetime.timedelta(0, 60)
2641
>>> rfc3339_duration_to_delta("PT60M")
2642
datetime.timedelta(0, 3600)
2643
>>> rfc3339_duration_to_delta("PT24H")
2644
datetime.timedelta(1)
2645
>>> rfc3339_duration_to_delta("P1W")
2646
datetime.timedelta(7)
2647
>>> rfc3339_duration_to_delta("PT5M30S")
2648
datetime.timedelta(0, 330)
2649
>>> rfc3339_duration_to_delta("P1DT3M20S")
2650
datetime.timedelta(1, 200)
2651
"""
2652
2653
# Parsing an RFC 3339 duration with regular expressions is not
2654
# possible - there would have to be multiple places for the same
2655
# values, like seconds. The current code, while more esoteric, is
2656
# cleaner without depending on a parsing library. If Python had a
2657
# built-in library for parsing we would use it, but we'd like to
2658
# avoid excessive use of external libraries.
2659
2660
# New type for defining tokens, syntax, and semantics all-in-one
2661
Token = collections.namedtuple("Token", (
2662
"regexp", # To match token; if "value" is not None, must have
2663
# a "group" containing digits
2664
"value", # datetime.timedelta or None
2665
"followers")) # Tokens valid after this token
2666
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2667
# the "duration" ABNF definition in RFC 3339, Appendix A.
2668
token_end = Token(re.compile(r"$"), None, frozenset())
2669
token_second = Token(re.compile(r"(\d+)S"),
2670
datetime.timedelta(seconds=1),
2671
frozenset((token_end, )))
2672
token_minute = Token(re.compile(r"(\d+)M"),
2673
datetime.timedelta(minutes=1),
2674
frozenset((token_second, token_end)))
2675
token_hour = Token(re.compile(r"(\d+)H"),
2676
datetime.timedelta(hours=1),
2677
frozenset((token_minute, token_end)))
2678
token_time = Token(re.compile(r"T"),
2679
None,
2680
frozenset((token_hour, token_minute,
2681
token_second)))
2682
token_day = Token(re.compile(r"(\d+)D"),
2683
datetime.timedelta(days=1),
2684
frozenset((token_time, token_end)))
2685
token_month = Token(re.compile(r"(\d+)M"),
2686
datetime.timedelta(weeks=4),
2687
frozenset((token_day, token_end)))
2688
token_year = Token(re.compile(r"(\d+)Y"),
2689
datetime.timedelta(weeks=52),
2690
frozenset((token_month, token_end)))
2691
token_week = Token(re.compile(r"(\d+)W"),
2692
datetime.timedelta(weeks=1),
2693
frozenset((token_end, )))
2694
token_duration = Token(re.compile(r"P"), None,
2695
frozenset((token_year, token_month,
2696
token_day, token_time,
2697
token_week)))
2698
# Define starting values:
2699
# Value so far
2700
value = datetime.timedelta()
2701
found_token = None
2702
# Following valid tokens
2703
followers = frozenset((token_duration, ))
2704
# String left to parse
2705
s = duration
2706
# Loop until end token is found
2707
while found_token is not token_end:
2708
# Search for any currently valid tokens
2709
for token in followers:
2710
match = token.regexp.match(s)
2711
if match is not None:
2712
# Token found
2713
if token.value is not None:
2714
# Value found, parse digits
2715
factor = int(match.group(1), 10)
2716
# Add to value so far
2717
value += factor * token.value
2718
# Strip token from string
2719
s = token.regexp.sub("", s, 1)
2720
# Go to found token
2721
found_token = token
2722
# Set valid next tokens
2723
followers = found_token.followers
2724
break
2725
else:
2726
# No currently valid tokens were found
2727
raise ValueError("Invalid RFC 3339 duration: {!r}"
2728
.format(duration))
2729
# End token found
2730
return value
2731
2732
1559
2733
def string_to_delta(interval):
1560
2734
"""Parse a string and return a datetime.timedelta
1561
1562
>>> string_to_delta(u'7d')
2735
2736
>>> string_to_delta('7d')
1563
2737
datetime.timedelta(7)
1564
>>> string_to_delta(u'60s')
2738
>>> string_to_delta('60s')
1565
2739
datetime.timedelta(0, 60)
1566
>>> string_to_delta(u'60m')
2740
>>> string_to_delta('60m')
1567
2741
datetime.timedelta(0, 3600)
1568
>>> string_to_delta(u'24h')
2742
>>> string_to_delta('24h')
1569
2743
datetime.timedelta(1)
1570
>>> string_to_delta(u'1w')
2744
>>> string_to_delta('1w')
1571
2745
datetime.timedelta(7)
1572
>>> string_to_delta(u'5m 30s')
2746
>>> string_to_delta('5m 30s')
1573
2747
datetime.timedelta(0, 330)
1574
2748
"""
2749
2750
try:
2751
return rfc3339_duration_to_delta(interval)
2752
except ValueError:
2753
pass
2754
1575
2755
timevalue = datetime.timedelta(0)
1576
2756
for s in interval.split():
1577
2757
try:
1578
suffix = unicode(s[-1])
2758
suffix = s[-1]
1579
2759
value = int(s[:-1])
1580
if suffix == u"d":
2760
if suffix == "d":
1581
2761
delta = datetime.timedelta(value)
1582
elif suffix == u"s":
2762
elif suffix == "s":
1583
2763
delta = datetime.timedelta(0, value)
1584
elif suffix == u"m":
2764
elif suffix == "m":
1585
2765
delta = datetime.timedelta(0, 0, 0, 0, value)
1586
elif suffix == u"h":
2766
elif suffix == "h":
1587
2767
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1588
elif suffix == u"w":
2768
elif suffix == "w":
1589
2769
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1590
2770
else:
1591
raise ValueError(u"Unknown suffix %r" % suffix)
1592
except (ValueError, IndexError), e:
1593
raise ValueError(e.message)
2771
raise ValueError("Unknown suffix {!r}".format(suffix))
2772
except IndexError as e:
2773
raise ValueError(*(e.args))
1594
2774
timevalue += delta
1595
2775
return timevalue
1596
2776
1597
2777
1598
def if_nametoindex(interface):
1599
"""Call the C function if_nametoindex(), or equivalent
1600
1601
Note: This function cannot accept a unicode string."""
1602
global if_nametoindex
1603
try:
1604
if_nametoindex = (ctypes.cdll.LoadLibrary
1605
(ctypes.util.find_library(u"c"))
1606
.if_nametoindex)
1607
except (OSError, AttributeError):
1608
logger.warning(u"Doing if_nametoindex the hard way")
1609
def if_nametoindex(interface):
1610
"Get an interface index the hard way, i.e. using fcntl()"
1611
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1612
with contextlib.closing(socket.socket()) as s:
1613
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1614
struct.pack(str(u"16s16x"),
1615
interface))
1616
interface_index = struct.unpack(str(u"I"),
1617
ifreq[16:20])[0]
1618
return interface_index
1619
return if_nametoindex(interface)
1620
1621
1622
def daemon(nochdir = False, noclose = False):
2778
def daemon(nochdir=False, noclose=False):
1623
2779
"""See daemon(3). Standard BSD Unix function.
1624
2780
1625
2781
This should really exist as os.daemon, but it doesn't (yet)."""
1626
2782
if os.fork():
1627
2783
sys.exit()
1628
2784
os.setsid()
1629
2785
if not nochdir:
1630
os.chdir(u"/")
2786
os.chdir("/")
1631
2787
if os.fork():
1632
2788
sys.exit()
1633
2789
if not noclose:
1634
2790
# Close all standard open file descriptors
1635
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2791
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1636
2792
if not stat.S_ISCHR(os.fstat(null).st_mode):
1637
2793
raise OSError(errno.ENODEV,
1638
u"%s not a character device"
1639
% os.path.devnull)
2794
"{} not a character device"
2795
.format(os.devnull))
1640
2796
os.dup2(null, sys.stdin.fileno())
1641
2797
os.dup2(null, sys.stdout.fileno())
1642
2798
os.dup2(null, sys.stderr.fileno())
1645
2801
1646
2802
1647
2803
def main():
1648
2804
1649
2805
##################################################################
1650
2806
# Parsing of options, both command line and config file
1651
1652
parser = optparse.OptionParser(version = "%%prog %s" % version)
1653
parser.add_option("-i", u"--interface", type=u"string",
1654
metavar="IF", help=u"Bind to interface IF")
1655
parser.add_option("-a", u"--address", type=u"string",
1656
help=u"Address to listen for requests on")
1657
parser.add_option("-p", u"--port", type=u"int",
1658
help=u"Port number to receive requests on")
1659
parser.add_option("--check", action=u"store_true",
1660
help=u"Run self-test")
1661
parser.add_option("--debug", action=u"store_true",
1662
help=u"Debug mode; run in foreground and log to"
1663
u" terminal")
1664
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1665
help=u"Debug level for stdout output")
1666
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1667
u" priority string (see GnuTLS documentation)")
1668
parser.add_option("--servicename", type=u"string",
1669
metavar=u"NAME", help=u"Zeroconf service name")
1670
parser.add_option("--configdir", type=u"string",
1671
default=u"/etc/mandos", metavar=u"DIR",
1672
help=u"Directory to search for configuration"
1673
u" files")
1674
parser.add_option("--no-dbus", action=u"store_false",
1675
dest=u"use_dbus", help=u"Do not provide D-Bus"
1676
u" system bus interface")
1677
parser.add_option("--no-ipv6", action=u"store_false",
1678
dest=u"use_ipv6", help=u"Do not use IPv6")
1679
options = parser.parse_args()[0]
1680
2807
2808
parser = argparse.ArgumentParser()
2809
parser.add_argument("-v", "--version", action="version",
2810
version="%(prog)s {}".format(version),
2811
help="show version number and exit")
2812
parser.add_argument("-i", "--interface", metavar="IF",
2813
help="Bind to interface IF")
2814
parser.add_argument("-a", "--address",
2815
help="Address to listen for requests on")
2816
parser.add_argument("-p", "--port", type=int,
2817
help="Port number to receive requests on")
2818
parser.add_argument("--check", action="store_true",
2819
help="Run self-test")
2820
parser.add_argument("--debug", action="store_true",
2821
help="Debug mode; run in foreground and log"
2822
" to terminal", default=None)
2823
parser.add_argument("--debuglevel", metavar="LEVEL",
2824
help="Debug level for stdout output")
2825
parser.add_argument("--priority", help="GnuTLS"
2826
" priority string (see GnuTLS documentation)")
2827
parser.add_argument("--servicename",
2828
metavar="NAME", help="Zeroconf service name")
2829
parser.add_argument("--configdir",
2830
default="/etc/mandos", metavar="DIR",
2831
help="Directory to search for configuration"
2832
" files")
2833
parser.add_argument("--no-dbus", action="store_false",
2834
dest="use_dbus", help="Do not provide D-Bus"
2835
" system bus interface", default=None)
2836
parser.add_argument("--no-ipv6", action="store_false",
2837
dest="use_ipv6", help="Do not use IPv6",
2838
default=None)
2839
parser.add_argument("--no-restore", action="store_false",
2840
dest="restore", help="Do not restore stored"
2841
" state", default=None)
2842
parser.add_argument("--socket", type=int,
2843
help="Specify a file descriptor to a network"
2844
" socket to use instead of creating one")
2845
parser.add_argument("--statedir", metavar="DIR",
2846
help="Directory to save/restore state in")
2847
parser.add_argument("--foreground", action="store_true",
2848
help="Run in foreground", default=None)
2849
parser.add_argument("--no-zeroconf", action="store_false",
2850
dest="zeroconf", help="Do not use Zeroconf",
2851
default=None)
2852
2853
options = parser.parse_args()
2854
1681
2855
if options.check:
1682
2856
import doctest
1683
doctest.testmod()
1684
sys.exit()
1685
2857
fail_count, test_count = doctest.testmod()
2858
sys.exit(os.EX_OK if fail_count == 0 else 1)
2859
1686
2860
# Default values for config file for server-global settings
1687
server_defaults = { u"interface": u"",
1688
u"address": u"",
1689
u"port": u"",
1690
u"debug": u"False",
1691
u"priority":
1692
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1693
u"servicename": u"Mandos",
1694
u"use_dbus": u"True",
1695
u"use_ipv6": u"True",
1696
u"debuglevel": u"",
1697
}
1698
2861
server_defaults = {"interface": "",
2862
"address": "",
2863
"port": "",
2864
"debug": "False",
2865
"priority":
2866
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2867
":+SIGN-DSA-SHA256",
2868
"servicename": "Mandos",
2869
"use_dbus": "True",
2870
"use_ipv6": "True",
2871
"debuglevel": "",
2872
"restore": "True",
2873
"socket": "",
2874
"statedir": "/var/lib/mandos",
2875
"foreground": "False",
2876
"zeroconf": "True",
2877
}
2878
1699
2879
# Parse config file for server-global settings
1700
2880
server_config = configparser.SafeConfigParser(server_defaults)
1701
2881
del server_defaults
1702
server_config.read(os.path.join(options.configdir,
1703
u"mandos.conf"))
2882
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1704
2883
# Convert the SafeConfigParser object to a dict
1705
2884
server_settings = server_config.defaults()
1706
2885
# Use the appropriate methods on the non-string config options
1707
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1708
server_settings[option] = server_config.getboolean(u"DEFAULT",
2886
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2887
server_settings[option] = server_config.getboolean("DEFAULT",
1709
2888
option)
1710
2889
if server_settings["port"]:
1711
server_settings["port"] = server_config.getint(u"DEFAULT",
1712
u"port")
2890
server_settings["port"] = server_config.getint("DEFAULT",
2891
"port")
2892
if server_settings["socket"]:
2893
server_settings["socket"] = server_config.getint("DEFAULT",
2894
"socket")
2895
# Later, stdin will, and stdout and stderr might, be dup'ed
2896
# over with an opened os.devnull. But we don't want this to
2897
# happen with a supplied network socket.
2898
if 0 <= server_settings["socket"] <= 2:
2899
server_settings["socket"] = os.dup(server_settings
2900
["socket"])
1713
2901
del server_config
1714
2902
1715
2903
# Override the settings from the config file with command line
1716
2904
# options, if set.
1717
for option in (u"interface", u"address", u"port", u"debug",
1718
u"priority", u"servicename", u"configdir",
1719
u"use_dbus", u"use_ipv6", u"debuglevel"):
2905
for option in ("interface", "address", "port", "debug",
2906
"priority", "servicename", "configdir", "use_dbus",
2907
"use_ipv6", "debuglevel", "restore", "statedir",
2908
"socket", "foreground", "zeroconf"):
1720
2909
value = getattr(options, option)
1721
2910
if value is not None:
1722
2911
server_settings[option] = value
1723
2912
del options
1724
2913
# Force all strings to be unicode
1725
2914
for option in server_settings.keys():
1726
if type(server_settings[option]) is str:
1727
server_settings[option] = unicode(server_settings[option])
2915
if isinstance(server_settings[option], bytes):
2916
server_settings[option] = (server_settings[option]
2917
.decode("utf-8"))
2918
# Force all boolean options to be boolean
2919
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2920
"foreground", "zeroconf"):
2921
server_settings[option] = bool(server_settings[option])
2922
# Debug implies foreground
2923
if server_settings["debug"]:
2924
server_settings["foreground"] = True
1728
2925
# Now we have our good server settings in "server_settings"
1729
2926
1730
2927
##################################################################
1731
2928
2929
if (not server_settings["zeroconf"]
2930
and not (server_settings["port"]
2931
or server_settings["socket"] != "")):
2932
parser.error("Needs port or socket to work without Zeroconf")
2933
1732
2934
# For convenience
1733
debug = server_settings[u"debug"]
1734
debuglevel = server_settings[u"debuglevel"]
1735
use_dbus = server_settings[u"use_dbus"]
1736
use_ipv6 = server_settings[u"use_ipv6"]
1737
1738
if server_settings[u"servicename"] != u"Mandos":
1739
syslogger.setFormatter(logging.Formatter
1740
(u'Mandos (%s) [%%(process)d]:'
1741
u' %%(levelname)s: %%(message)s'
1742
% server_settings[u"servicename"]))
1743
2935
debug = server_settings["debug"]
2936
debuglevel = server_settings["debuglevel"]
2937
use_dbus = server_settings["use_dbus"]
2938
use_ipv6 = server_settings["use_ipv6"]
2939
stored_state_path = os.path.join(server_settings["statedir"],
2940
stored_state_file)
2941
foreground = server_settings["foreground"]
2942
zeroconf = server_settings["zeroconf"]
2943
2944
if debug:
2945
initlogger(debug, logging.DEBUG)
2946
else:
2947
if not debuglevel:
2948
initlogger(debug)
2949
else:
2950
level = getattr(logging, debuglevel.upper())
2951
initlogger(debug, level)
2952
2953
if server_settings["servicename"] != "Mandos":
2954
syslogger.setFormatter(
2955
logging.Formatter('Mandos ({}) [%(process)d]:'
2956
' %(levelname)s: %(message)s'.format(
2957
server_settings["servicename"])))
2958
1744
2959
# Parse config file with clients
1745
client_defaults = { u"timeout": u"1h",
1746
u"interval": u"5m",
1747
u"checker": u"fping -q -- %%(host)s",
1748
u"host": u"",
1749
u"approval_delay": u"0s",
1750
u"approval_duration": u"1s",
1751
}
1752
client_config = configparser.SafeConfigParser(client_defaults)
1753
client_config.read(os.path.join(server_settings[u"configdir"],
1754
u"clients.conf"))
1755
2960
client_config = configparser.SafeConfigParser(Client
2961
.client_defaults)
2962
client_config.read(os.path.join(server_settings["configdir"],
2963
"clients.conf"))
2964
1756
2965
global mandos_dbus_service
1757
2966
mandos_dbus_service = None
1758
1759
tcp_server = MandosServer((server_settings[u"address"],
1760
server_settings[u"port"]),
1761
ClientHandler,
1762
interface=(server_settings[u"interface"]
1763
or None),
1764
use_ipv6=use_ipv6,
1765
gnutls_priority=
1766
server_settings[u"priority"],
1767
use_dbus=use_dbus)
1768
if not debug:
1769
pidfilename = u"/var/run/mandos.pid"
1770
try:
1771
pidfile = open(pidfilename, u"w")
1772
except IOError:
1773
logger.error(u"Could not open file %r", pidfilename)
1774
1775
try:
1776
uid = pwd.getpwnam(u"_mandos").pw_uid
1777
gid = pwd.getpwnam(u"_mandos").pw_gid
1778
except KeyError:
1779
try:
1780
uid = pwd.getpwnam(u"mandos").pw_uid
1781
gid = pwd.getpwnam(u"mandos").pw_gid
2967
2968
socketfd = None
2969
if server_settings["socket"] != "":
2970
socketfd = server_settings["socket"]
2971
tcp_server = MandosServer(
2972
(server_settings["address"], server_settings["port"]),
2973
ClientHandler,
2974
interface=(server_settings["interface"] or None),
2975
use_ipv6=use_ipv6,
2976
gnutls_priority=server_settings["priority"],
2977
use_dbus=use_dbus,
2978
socketfd=socketfd)
2979
if not foreground:
2980
pidfilename = "/run/mandos.pid"
2981
if not os.path.isdir("/run/."):
2982
pidfilename = "/var/run/mandos.pid"
2983
pidfile = None
2984
try:
2985
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2986
except IOError as e:
2987
logger.error("Could not open file %r", pidfilename,
2988
exc_info=e)
2989
2990
for name, group in (("_mandos", "_mandos"),
2991
("mandos", "mandos"),
2992
("nobody", "nogroup")):
2993
try:
2994
uid = pwd.getpwnam(name).pw_uid
2995
gid = pwd.getpwnam(group).pw_gid
2996
break
1782
2997
except KeyError:
1783
try:
1784
uid = pwd.getpwnam(u"nobody").pw_uid
1785
gid = pwd.getpwnam(u"nobody").pw_gid
1786
except KeyError:
1787
uid = 65534
1788
gid = 65534
2998
continue
2999
else:
3000
uid = 65534
3001
gid = 65534
1789
3002
try:
1790
3003
os.setgid(gid)
1791
3004
os.setuid(uid)
1792
except OSError, error:
1793
if error[0] != errno.EPERM:
1794
raise error
1795
1796
if not debug and not debuglevel:
1797
syslogger.setLevel(logging.WARNING)
1798
console.setLevel(logging.WARNING)
1799
if debuglevel:
1800
level = getattr(logging, debuglevel.upper())
1801
syslogger.setLevel(level)
1802
console.setLevel(level)
3005
if debug:
3006
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3007
gid))
3008
except OSError as error:
3009
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3010
.format(uid, gid, os.strerror(error.errno)))
3011
if error.errno != errno.EPERM:
3012
raise
1803
3013
1804
3014
if debug:
1805
3015
# Enable all possible GnuTLS debugging
1806
3016
1807
3017
# "Use a log level over 10 to enable all debugging options."
1808
3018
# - GnuTLS manual
1809
gnutls.library.functions.gnutls_global_set_log_level(11)
1810
1811
@gnutls.library.types.gnutls_log_func
3019
gnutls.global_set_log_level(11)
3020
3021
@gnutls.log_func
1812
3022
def debug_gnutls(level, string):
1813
logger.debug(u"GnuTLS: %s", string[:-1])
1814
1815
(gnutls.library.functions
1816
.gnutls_global_set_log_function(debug_gnutls))
1817
3023
logger.debug("GnuTLS: %s", string[:-1])
3024
3025
gnutls.global_set_log_function(debug_gnutls)
3026
1818
3027
# Redirect stdin so all checkers get /dev/null
1819
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3028
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1820
3029
os.dup2(null, sys.stdin.fileno())
1821
3030
if null > 2:
1822
3031
os.close(null)
1823
else:
1824
# No console logging
1825
logger.removeHandler(console)
1826
1827
3032
3033
# Need to fork before connecting to D-Bus
3034
if not foreground:
3035
# Close all input and output, do double fork, etc.
3036
daemon()
3037
3038
# multiprocessing will use threads, so before we use GLib we need
3039
# to inform GLib that threads will be used.
3040
GLib.threads_init()
3041
1828
3042
global main_loop
1829
3043
# From the Avahi example code
1830
DBusGMainLoop(set_as_default=True )
1831
main_loop = gobject.MainLoop()
3044
DBusGMainLoop(set_as_default=True)
3045
main_loop = GLib.MainLoop()
1832
3046
bus = dbus.SystemBus()
1833
3047
# End of Avahi example code
1834
3048
if use_dbus:
1835
3049
try:
1836
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1837
bus, do_not_queue=True)
1838
except dbus.exceptions.NameExistsException, e:
1839
logger.error(unicode(e) + u", disabling D-Bus")
3050
bus_name = dbus.service.BusName("se.recompile.Mandos",
3051
bus,
3052
do_not_queue=True)
3053
old_bus_name = dbus.service.BusName(
3054
"se.bsnet.fukt.Mandos", bus,
3055
do_not_queue=True)
3056
except dbus.exceptions.DBusException as e:
3057
logger.error("Disabling D-Bus:", exc_info=e)
1840
3058
use_dbus = False
1841
server_settings[u"use_dbus"] = False
3059
server_settings["use_dbus"] = False
1842
3060
tcp_server.use_dbus = False
1843
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1844
service = AvahiService(name = server_settings[u"servicename"],
1845
servicetype = u"_mandos._tcp",
1846
protocol = protocol, bus = bus)
1847
if server_settings["interface"]:
1848
service.interface = (if_nametoindex
1849
(str(server_settings[u"interface"])))
3061
if zeroconf:
3062
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3063
service = AvahiServiceToSyslog(
3064
name=server_settings["servicename"],
3065
servicetype="_mandos._tcp",
3066
protocol=protocol,
3067
bus=bus)
3068
if server_settings["interface"]:
3069
service.interface = if_nametoindex(
3070
server_settings["interface"].encode("utf-8"))
1850
3071
1851
if not debug:
1852
# Close all input and output, do double fork, etc.
1853
daemon()
1854
1855
3072
global multiprocessing_manager
1856
3073
multiprocessing_manager = multiprocessing.Manager()
1857
3074
1858
3075
client_class = Client
1859
3076
if use_dbus:
1860
client_class = functools.partial(ClientDBus, bus = bus)
1861
def client_config_items(config, section):
1862
special_settings = {
1863
"approved_by_default":
1864
lambda: config.getboolean(section,
1865
"approved_by_default"),
1866
}
1867
for name, value in config.items(section):
3077
client_class = functools.partial(ClientDBus, bus=bus)
3078
3079
client_settings = Client.config_parser(client_config)
3080
old_client_settings = {}
3081
clients_data = {}
3082
3083
# This is used to redirect stdout and stderr for checker processes
3084
global wnull
3085
wnull = open(os.devnull, "w") # A writable /dev/null
3086
# Only used if server is running in foreground but not in debug
3087
# mode
3088
if debug or not foreground:
3089
wnull.close()
3090
3091
# Get client data and settings from last running state.
3092
if server_settings["restore"]:
3093
try:
3094
with open(stored_state_path, "rb") as stored_state:
3095
if sys.version_info.major == 2:
3096
clients_data, old_client_settings = pickle.load(
3097
stored_state)
3098
else:
3099
bytes_clients_data, bytes_old_client_settings = (
3100
pickle.load(stored_state, encoding="bytes"))
3101
# Fix bytes to strings
3102
# clients_data
3103
# .keys()
3104
clients_data = {(key.decode("utf-8")
3105
if isinstance(key, bytes)
3106
else key): value
3107
for key, value in
3108
bytes_clients_data.items()}
3109
del bytes_clients_data
3110
for key in clients_data:
3111
value = {(k.decode("utf-8")
3112
if isinstance(k, bytes) else k): v
3113
for k, v in
3114
clients_data[key].items()}
3115
clients_data[key] = value
3116
# .client_structure
3117
value["client_structure"] = [
3118
(s.decode("utf-8")
3119
if isinstance(s, bytes)
3120
else s) for s in
3121
value["client_structure"]]
3122
# .name & .host
3123
for k in ("name", "host"):
3124
if isinstance(value[k], bytes):
3125
value[k] = value[k].decode("utf-8")
3126
# old_client_settings
3127
# .keys()
3128
old_client_settings = {
3129
(key.decode("utf-8")
3130
if isinstance(key, bytes)
3131
else key): value
3132
for key, value in
3133
bytes_old_client_settings.items()}
3134
del bytes_old_client_settings
3135
# .host
3136
for value in old_client_settings.values():
3137
if isinstance(value["host"], bytes):
3138
value["host"] = (value["host"]
3139
.decode("utf-8"))
3140
os.remove(stored_state_path)
3141
except IOError as e:
3142
if e.errno == errno.ENOENT:
3143
logger.warning("Could not load persistent state:"
3144
" {}".format(os.strerror(e.errno)))
3145
else:
3146
logger.critical("Could not load persistent state:",
3147
exc_info=e)
3148
raise
3149
except EOFError as e:
3150
logger.warning("Could not load persistent state: "
3151
"EOFError:",
3152
exc_info=e)
3153
3154
with PGPEngine() as pgp:
3155
for client_name, client in clients_data.items():
3156
# Skip removed clients
3157
if client_name not in client_settings:
3158
continue
3159
3160
# Decide which value to use after restoring saved state.
3161
# We have three different values: Old config file,
3162
# new config file, and saved state.
3163
# New config value takes precedence if it differs from old
3164
# config value, otherwise use saved state.
3165
for name, value in client_settings[client_name].items():
3166
try:
3167
# For each value in new config, check if it
3168
# differs from the old config value (Except for
3169
# the "secret" attribute)
3170
if (name != "secret"
3171
and (value !=
3172
old_client_settings[client_name][name])):
3173
client[name] = value
3174
except KeyError:
3175
pass
3176
3177
# Clients who has passed its expire date can still be
3178
# enabled if its last checker was successful. A Client
3179
# whose checker succeeded before we stored its state is
3180
# assumed to have successfully run all checkers during
3181
# downtime.
3182
if client["enabled"]:
3183
if datetime.datetime.utcnow() >= client["expires"]:
3184
if not client["last_checked_ok"]:
3185
logger.warning(
3186
"disabling client {} - Client never "
3187
"performed a successful checker".format(
3188
client_name))
3189
client["enabled"] = False
3190
elif client["last_checker_status"] != 0:
3191
logger.warning(
3192
"disabling client {} - Client last"
3193
" checker failed with error code"
3194
" {}".format(
3195
client_name,
3196
client["last_checker_status"]))
3197
client["enabled"] = False
3198
else:
3199
client["expires"] = (
3200
datetime.datetime.utcnow()
3201
+ client["timeout"])
3202
logger.debug("Last checker succeeded,"
3203
" keeping {} enabled".format(
3204
client_name))
1868
3205
try:
1869
yield (name, special_settings[name]())
1870
except KeyError:
1871
yield (name, value)
1872
1873
tcp_server.clients.update(set(
1874
client_class(name = section,
1875
config= dict(client_config_items(
1876
client_config, section)))
1877
for section in client_config.sections()))
3206
client["secret"] = pgp.decrypt(
3207
client["encrypted_secret"],
3208
client_settings[client_name]["secret"])
3209
except PGPError:
3210
# If decryption fails, we use secret from new settings
3211
logger.debug("Failed to decrypt {} old secret".format(
3212
client_name))
3213
client["secret"] = (client_settings[client_name]
3214
["secret"])
3215
3216
# Add/remove clients based on new changes made to config
3217
for client_name in (set(old_client_settings)
3218
- set(client_settings)):
3219
del clients_data[client_name]
3220
for client_name in (set(client_settings)
3221
- set(old_client_settings)):
3222
clients_data[client_name] = client_settings[client_name]
3223
3224
# Create all client objects
3225
for client_name, client in clients_data.items():
3226
tcp_server.clients[client_name] = client_class(
3227
name=client_name,
3228
settings=client,
3229
server_settings=server_settings)
3230
1878
3231
if not tcp_server.clients:
1879
logger.warning(u"No clients defined")
1880
1881
if not debug:
1882
try:
1883
with pidfile:
1884
pid = os.getpid()
1885
pidfile.write(str(pid) + "\n")
1886
del pidfile
1887
except IOError:
1888
logger.error(u"Could not write to file %r with PID %d",
1889
pidfilename, pid)
1890
except NameError:
1891
# "pidfile" was never created
1892
pass
3232
logger.warning("No clients defined")
3233
3234
if not foreground:
3235
if pidfile is not None:
3236
pid = os.getpid()
3237
try:
3238
with pidfile:
3239
print(pid, file=pidfile)
3240
except IOError:
3241
logger.error("Could not write to file %r with PID %d",
3242
pidfilename, pid)
3243
del pidfile
1893
3244
del pidfilename
1894
1895
signal.signal(signal.SIGINT, signal.SIG_IGN)
1896
1897
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1898
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1899
3245
3246
for termsig in (signal.SIGHUP, signal.SIGTERM):
3247
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3248
lambda: main_loop.quit() and False)
3249
1900
3250
if use_dbus:
1901
class MandosDBusService(dbus.service.Object):
3251
3252
@alternate_dbus_interfaces(
3253
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3254
class MandosDBusService(DBusObjectWithObjectManager):
1902
3255
"""A D-Bus proxy object"""
3256
1903
3257
def __init__(self):
1904
dbus.service.Object.__init__(self, bus, u"/")
1905
_interface = u"se.bsnet.fukt.Mandos"
1906
1907
@dbus.service.signal(_interface, signature=u"o")
3258
dbus.service.Object.__init__(self, bus, "/")
3259
3260
_interface = "se.recompile.Mandos"
3261
3262
@dbus.service.signal(_interface, signature="o")
1908
3263
def ClientAdded(self, objpath):
1909
3264
"D-Bus signal"
1910
3265
pass
1911
1912
@dbus.service.signal(_interface, signature=u"ss")
3266
3267
@dbus.service.signal(_interface, signature="ss")
1913
3268
def ClientNotFound(self, fingerprint, address):
1914
3269
"D-Bus signal"
1915
3270
pass
1916
1917
@dbus.service.signal(_interface, signature=u"os")
3271
3272
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3273
"true"})
3274
@dbus.service.signal(_interface, signature="os")
1918
3275
def ClientRemoved(self, objpath, name):
1919
3276
"D-Bus signal"
1920
3277
pass
1921
1922
@dbus.service.method(_interface, out_signature=u"ao")
3278
3279
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3280
"true"})
3281
@dbus.service.method(_interface, out_signature="ao")
1923
3282
def GetAllClients(self):
1924
3283
"D-Bus method"
1925
return dbus.Array(c.dbus_object_path
1926
for c in tcp_server.clients)
1927
3284
return dbus.Array(c.dbus_object_path for c in
3285
tcp_server.clients.values())
3286
3287
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3288
"true"})
1928
3289
@dbus.service.method(_interface,
1929
out_signature=u"a{oa{sv}}")
3290
out_signature="a{oa{sv}}")
1930
3291
def GetAllClientsWithProperties(self):
1931
3292
"D-Bus method"
1932
3293
return dbus.Dictionary(
1933
((c.dbus_object_path, c.GetAll(u""))
1934
for c in tcp_server.clients),
1935
signature=u"oa{sv}")
1936
1937
@dbus.service.method(_interface, in_signature=u"o")
3294
{c.dbus_object_path: c.GetAll(
3295
"se.recompile.Mandos.Client")
3296
for c in tcp_server.clients.values()},
3297
signature="oa{sv}")
3298
3299
@dbus.service.method(_interface, in_signature="o")
1938
3300
def RemoveClient(self, object_path):
1939
3301
"D-Bus method"
1940
for c in tcp_server.clients:
3302
for c in tcp_server.clients.values():
1941
3303
if c.dbus_object_path == object_path:
1942
tcp_server.clients.remove(c)
3304
del tcp_server.clients[c.name]
1943
3305
c.remove_from_connection()
1944
# Don't signal anything except ClientRemoved
3306
# Don't signal the disabling
1945
3307
c.disable(quiet=True)
1946
# Emit D-Bus signal
1947
self.ClientRemoved(object_path, c.name)
3308
# Emit D-Bus signal for removal
3309
self.client_removed_signal(c)
1948
3310
return
1949
3311
raise KeyError(object_path)
1950
3312
1951
3313
del _interface
1952
3314
3315
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3316
out_signature="a{oa{sa{sv}}}")
3317
def GetManagedObjects(self):
3318
"""D-Bus method"""
3319
return dbus.Dictionary(
3320
{client.dbus_object_path:
3321
dbus.Dictionary(
3322
{interface: client.GetAll(interface)
3323
for interface in
3324
client._get_all_interface_names()})
3325
for client in tcp_server.clients.values()})
3326
3327
def client_added_signal(self, client):
3328
"""Send the new standard signal and the old signal"""
3329
if use_dbus:
3330
# New standard signal
3331
self.InterfacesAdded(
3332
client.dbus_object_path,
3333
dbus.Dictionary(
3334
{interface: client.GetAll(interface)
3335
for interface in
3336
client._get_all_interface_names()}))
3337
# Old signal
3338
self.ClientAdded(client.dbus_object_path)
3339
3340
def client_removed_signal(self, client):
3341
"""Send the new standard signal and the old signal"""
3342
if use_dbus:
3343
# New standard signal
3344
self.InterfacesRemoved(
3345
client.dbus_object_path,
3346
client._get_all_interface_names())
3347
# Old signal
3348
self.ClientRemoved(client.dbus_object_path,
3349
client.name)
3350
1953
3351
mandos_dbus_service = MandosDBusService()
1954
3352
3353
# Save modules to variables to exempt the modules from being
3354
# unloaded before the function registered with atexit() is run.
3355
mp = multiprocessing
3356
wn = wnull
3357
1955
3358
def cleanup():
1956
3359
"Cleanup function; run on exit"
1957
service.cleanup()
1958
3360
if zeroconf:
3361
service.cleanup()
3362
3363
mp.active_children()
3364
wn.close()
3365
if not (tcp_server.clients or client_settings):
3366
return
3367
3368
# Store client before exiting. Secrets are encrypted with key
3369
# based on what config file has. If config file is
3370
# removed/edited, old secret will thus be unrecovable.
3371
clients = {}
3372
with PGPEngine() as pgp:
3373
for client in tcp_server.clients.values():
3374
key = client_settings[client.name]["secret"]
3375
client.encrypted_secret = pgp.encrypt(client.secret,
3376
key)
3377
client_dict = {}
3378
3379
# A list of attributes that can not be pickled
3380
# + secret.
3381
exclude = {"bus", "changedstate", "secret",
3382
"checker", "server_settings"}
3383
for name, typ in inspect.getmembers(dbus.service
3384
.Object):
3385
exclude.add(name)
3386
3387
client_dict["encrypted_secret"] = (client
3388
.encrypted_secret)
3389
for attr in client.client_structure:
3390
if attr not in exclude:
3391
client_dict[attr] = getattr(client, attr)
3392
3393
clients[client.name] = client_dict
3394
del client_settings[client.name]["secret"]
3395
3396
try:
3397
with tempfile.NamedTemporaryFile(
3398
mode='wb',
3399
suffix=".pickle",
3400
prefix='clients-',
3401
dir=os.path.dirname(stored_state_path),
3402
delete=False) as stored_state:
3403
pickle.dump((clients, client_settings), stored_state,
3404
protocol=2)
3405
tempname = stored_state.name
3406
os.rename(tempname, stored_state_path)
3407
except (IOError, OSError) as e:
3408
if not debug:
3409
try:
3410
os.remove(tempname)
3411
except NameError:
3412
pass
3413
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3414
logger.warning("Could not save persistent state: {}"
3415
.format(os.strerror(e.errno)))
3416
else:
3417
logger.warning("Could not save persistent state:",
3418
exc_info=e)
3419
raise
3420
3421
# Delete all clients, and settings from config
1959
3422
while tcp_server.clients:
1960
client = tcp_server.clients.pop()
3423
name, client = tcp_server.clients.popitem()
1961
3424
if use_dbus:
1962
3425
client.remove_from_connection()
1963
client.disable_hook = None
1964
# Don't signal anything except ClientRemoved
3426
# Don't signal the disabling
1965
3427
client.disable(quiet=True)
3428
# Emit D-Bus signal for removal
1966
3429
if use_dbus:
1967
# Emit D-Bus signal
1968
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1969
client.name)
1970
3430
mandos_dbus_service.client_removed_signal(client)
3431
client_settings.clear()
3432
1971
3433
atexit.register(cleanup)
1972
1973
for client in tcp_server.clients:
3434
3435
for client in tcp_server.clients.values():
1974
3436
if use_dbus:
1975
# Emit D-Bus signal
1976
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1977
client.enable()
1978
3437
# Emit D-Bus signal for adding
3438
mandos_dbus_service.client_added_signal(client)
3439
# Need to initiate checking of clients
3440
if client.enabled:
3441
client.init_checker()
3442
1979
3443
tcp_server.enable()
1980
3444
tcp_server.server_activate()
1981
3445
1982
3446
# Find out what port we got
1983
service.port = tcp_server.socket.getsockname()[1]
3447
if zeroconf:
3448
service.port = tcp_server.socket.getsockname()[1]
1984
3449
if use_ipv6:
1985
logger.info(u"Now listening on address %r, port %d,"
1986
" flowinfo %d, scope_id %d"
1987
% tcp_server.socket.getsockname())
3450
logger.info("Now listening on address %r, port %d,"
3451
" flowinfo %d, scope_id %d",
3452
*tcp_server.socket.getsockname())
1988
3453
else: # IPv4
1989
logger.info(u"Now listening on address %r, port %d"
1990
% tcp_server.socket.getsockname())
1991
1992
#service.interface = tcp_server.socket.getsockname()[3]
1993
3454
logger.info("Now listening on address %r, port %d",
3455
*tcp_server.socket.getsockname())
3456
3457
# service.interface = tcp_server.socket.getsockname()[3]
3458
1994
3459
try:
1995
# From the Avahi example code
1996
try:
1997
service.activate()
1998
except dbus.exceptions.DBusException, error:
1999
logger.critical(u"DBusException: %s", error)
2000
cleanup()
2001
sys.exit(1)
2002
# End of Avahi example code
2003
2004
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2005
lambda *args, **kwargs:
2006
(tcp_server.handle_request
2007
(*args[2:], **kwargs) or True))
2008
2009
logger.debug(u"Starting main loop")
3460
if zeroconf:
3461
# From the Avahi example code
3462
try:
3463
service.activate()
3464
except dbus.exceptions.DBusException as error:
3465
logger.critical("D-Bus Exception", exc_info=error)
3466
cleanup()
3467
sys.exit(1)
3468
# End of Avahi example code
3469
3470
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3471
lambda *args, **kwargs:
3472
(tcp_server.handle_request
3473
(*args[2:], **kwargs) or True))
3474
3475
logger.debug("Starting main loop")
2010
3476
main_loop.run()
2011
except AvahiError, error:
2012
logger.critical(u"AvahiError: %s", error)
3477
except AvahiError as error:
3478
logger.critical("Avahi Error", exc_info=error)
2013
3479
cleanup()
2014
3480
sys.exit(1)
2015
3481
except KeyboardInterrupt:
2016
3482
if debug:
2017
print >> sys.stderr
2018
logger.debug(u"Server received KeyboardInterrupt")
2019
logger.debug(u"Server exiting")
3483
print("", file=sys.stderr)
3484
logger.debug("Server received KeyboardInterrupt")
3485
logger.debug("Server exiting")
2020
3486
# Must run before the D-Bus bus name gets deregistered
2021
3487
cleanup()
2022
3488
3489
2023
3490
if __name__ == '__main__':
2024
3491
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0