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- Committer: Teddy Hogeborn
- Date: 2019-02-10 09:38:36 UTC
- mfrom: (237.4.104 release)
- Revision ID: teddy@recompile.se-20190210093836-46rh0gpzxvhvazem
Merge from release branch
- files added:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
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2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# 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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
68
80
69
81
import dbus
70
82
import dbus.service
71
import gobject
72
import avahi
83
from gi.repository import GLib
73
84
from dbus.mainloop.glib import DBusGMainLoop
74
85
import ctypes
75
86
import ctypes.util
76
87
import xml.dom.minidom
77
88
import inspect
78
import GnuPGInterface
79
89
90
# Try to find the value of SO_BINDTODEVICE:
80
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
81
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
95
except AttributeError:
83
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
84
99
from IN import SO_BINDTODEVICE
85
100
except ImportError:
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.1"
90
119
stored_state_file = "clients.pickle"
91
120
92
121
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
122
syslogger = None
96
123
97
124
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
101
127
except (OSError, AttributeError):
128
102
129
def if_nametoindex(interface):
103
130
"Get an interface index the hard way, i.e. using fcntl()"
104
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
132
with contextlib.closing(socket.socket()) as s:
106
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
136
return interface_index
112
137
113
138
114
def initlogger(level=logging.WARNING):
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
115
156
"""init logger and add loglevel"""
116
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
117
162
syslogger.setFormatter(logging.Formatter
118
163
('Mandos [%(process)d]: %(levelname)s:'
119
164
' %(message)s'))
120
165
logger.addHandler(syslogger)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
128
174
logger.setLevel(level)
129
175
130
176
135
181
136
182
class PGPEngine(object):
137
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
138
185
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
147
206
def __enter__(self):
148
207
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
208
209
def __exit__(self, exc_type, exc_value, traceback):
151
210
self._cleanup()
152
211
return False
153
212
154
213
def __del__(self):
155
214
self._cleanup()
156
215
157
216
def _cleanup(self):
158
217
if self.tempdir is not None:
159
218
# Delete contents of tempdir
160
219
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
220
topdown=False):
162
221
for filename in files:
163
222
os.remove(os.path.join(root, filename))
164
223
for dirname in dirs:
166
225
# Remove tempdir
167
226
os.rmdir(self.tempdir)
168
227
self.tempdir = None
169
228
170
229
def password_encode(self, password):
171
230
# Passphrase can not be empty and can not contain newlines or
172
231
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
175
240
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
190
256
return ciphertext
191
257
192
258
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
207
274
return decrypted_plaintext
208
275
209
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
210
303
211
304
class AvahiError(Exception):
212
305
def __init__(self, value, *args, **kwargs):
213
306
self.value = value
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
217
310
218
311
class AvahiServiceError(AvahiError):
219
312
pass
220
313
314
221
315
class AvahiGroupError(AvahiError):
222
316
pass
223
317
224
318
225
319
class AvahiService(object):
226
320
"""An Avahi (Zeroconf) service.
227
321
228
322
Attributes:
229
323
interface: integer; avahi.IF_UNSPEC or an interface index.
230
324
Used to optionally bind to the specified interface.
231
325
name: string; Example: 'Mandos'
232
326
type: string; Example: '_mandos._tcp'.
233
See <http://www.dns-sd.org/ServiceTypes.html>
327
See <https://www.iana.org/assignments/service-names-port-numbers>
234
328
port: integer; what port to announce
235
329
TXT: list of strings; TXT record for the service
236
330
domain: string; Domain to publish on, default to .local if empty.
242
336
server: D-Bus Server
243
337
bus: dbus.SystemBus()
244
338
"""
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
249
351
self.interface = interface
250
352
self.name = name
251
353
self.type = servicetype
260
362
self.server = None
261
363
self.bus = bus
262
364
self.entry_group_state_changed_match = None
263
def rename(self):
365
366
def rename(self, remove=True):
264
367
"""Derived from the Avahi example code"""
265
368
if self.rename_count >= self.max_renames:
266
369
logger.critical("No suitable Zeroconf service name found"
267
370
" after %i retries, exiting.",
268
371
self.rename_count)
269
372
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
272
376
logger.info("Changing Zeroconf service name to %r ...",
273
377
self.name)
274
self.remove()
378
if remove:
379
self.remove()
275
380
try:
276
381
self.add()
277
382
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
282
392
def remove(self):
283
393
"""Derived from the Avahi example code"""
284
394
if self.entry_group_state_changed_match is not None:
286
396
self.entry_group_state_changed_match = None
287
397
if self.group is not None:
288
398
self.group.Reset()
399
289
400
def add(self):
290
401
"""Derived from the Avahi example code"""
291
402
self.remove()
308
419
dbus.UInt16(self.port),
309
420
avahi.string_array_to_txt_array(self.TXT))
310
421
self.group.Commit()
422
311
423
def entry_group_state_changed(self, state, error):
312
424
"""Derived from the Avahi example code"""
313
425
logger.debug("Avahi entry group state change: %i", state)
314
426
315
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
316
428
logger.debug("Zeroconf service established.")
317
429
elif state == avahi.ENTRY_GROUP_COLLISION:
319
431
self.rename()
320
432
elif state == avahi.ENTRY_GROUP_FAILURE:
321
433
logger.critical("Avahi: Error in group state changed %s",
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
325
437
def cleanup(self):
326
438
"""Derived from the Avahi example code"""
327
439
if self.group is not None:
332
444
pass
333
445
self.group = None
334
446
self.remove()
447
335
448
def server_state_changed(self, state, error=None):
336
449
"""Derived from the Avahi example code"""
337
450
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
345
457
if state in bad_states:
346
458
if bad_states[state] is not None:
347
459
if error is None:
350
462
logger.error(bad_states[state] + ": %r", error)
351
463
self.cleanup()
352
464
elif state == avahi.SERVER_RUNNING:
353
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
354
477
else:
355
478
if error is None:
356
479
logger.debug("Unknown state: %r", state)
357
480
else:
358
481
logger.debug("Unknown state: %r: %r", state, error)
482
359
483
def activate(self):
360
484
"""Derived from the Avahi example code"""
361
485
if self.server is None:
365
489
follow_name_owner_changes=True),
366
490
avahi.DBUS_INTERFACE_SERVER)
367
491
self.server.connect_to_signal("StateChanged",
368
self.server_state_changed)
492
self.server_state_changed)
369
493
self.server_state_changed(self.server.GetState())
370
494
495
371
496
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
497
def rename(self, *args, **kwargs):
373
498
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
379
503
return ret
380
504
381
def _timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
387
828
class Client(object):
388
829
"""A representation of a client host served by this server.
389
830
390
831
Attributes:
391
_approved: bool(); 'None' if not yet approved/disapproved
832
approved: bool(); 'None' if not yet approved/disapproved
392
833
approval_delay: datetime.timedelta(); Time to wait for approval
393
834
approval_duration: datetime.timedelta(); Duration of one approval
394
835
checker: subprocess.Popen(); a running checker process used
395
836
to see if the client lives.
396
837
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
838
checker_callback_tag: a GLib event source tag, or None
398
839
checker_command: string; External command which is run to check
399
840
if client lives. %() expansions are done at
400
841
runtime with vars(self) as dict, so that for
401
842
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
843
checker_initiator_tag: a GLib event source tag, or None
403
844
created: datetime.datetime(); (UTC) object creation
404
845
client_structure: Object describing what attributes a client has
405
846
and is used for storing the client at exit
406
847
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
848
disable_initiator_tag: a GLib event source tag, or None
408
849
enabled: bool()
409
850
fingerprint: string (40 or 32 hexadecimal digits); used to
410
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
411
854
host: string; available for use by the checker command
412
855
interval: datetime.timedelta(); How often to start a new checker
413
856
last_approval_request: datetime.datetime(); (UTC) or None
414
857
last_checked_ok: datetime.datetime(); (UTC) or None
415
416
858
last_checker_status: integer between 0 and 255 reflecting exit
417
859
status of last checker. -1 reflects crashed
418
checker, or None.
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
419
863
last_enabled: datetime.datetime(); (UTC) or None
420
864
name: string; from the config file, used in log messages and
421
865
D-Bus identifiers
422
866
secret: bytestring; sent verbatim (over TLS) to client
423
867
timeout: datetime.timedelta(); How long from last_checked_ok
424
868
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
869
extended_timeout: extra long timeout when secret has been sent
426
870
runtime_expansions: Allowed attributes for runtime expansion.
427
871
expires: datetime.datetime(); time (UTC) when a client will be
428
872
disabled, or None
873
server_settings: The server_settings dict from main()
429
874
"""
430
875
431
876
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
434
880
"last_enabled", "name", "timeout")
435
436
def timeout_milliseconds(self):
437
"Return the 'timeout' attribute in milliseconds"
438
return _timedelta_to_milliseconds(self.timeout)
439
440
def extended_timeout_milliseconds(self):
441
"Return the 'extended_timeout' attribute in milliseconds"
442
return _timedelta_to_milliseconds(self.extended_timeout)
443
444
def interval_milliseconds(self):
445
"Return the 'interval' attribute in milliseconds"
446
return _timedelta_to_milliseconds(self.interval)
447
448
def approval_delay_milliseconds(self):
449
return _timedelta_to_milliseconds(self.approval_delay)
450
451
def __init__(self, name = None, config=None):
452
"""Note: the 'checker' key in 'config' sets the
453
'checker_command' attribute and *not* the 'checker'
454
attribute."""
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
455
948
self.name = name
456
if config is None:
457
config = {}
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
458
966
logger.debug("Creating client %r", self.name)
459
# Uppercase and remove spaces from fingerprint for later
460
# comparison purposes with return value from the fingerprint()
461
# function
462
self.fingerprint = (config["fingerprint"].upper()
463
.replace(" ", ""))
967
logger.debug(" Key ID: %s", self.key_id)
464
968
logger.debug(" Fingerprint: %s", self.fingerprint)
465
if "secret" in config:
466
self.secret = config["secret"].decode("base64")
467
elif "secfile" in config:
468
with open(os.path.expanduser(os.path.expandvars
469
(config["secfile"])),
470
"rb") as secfile:
471
self.secret = secfile.read()
472
else:
473
raise TypeError("No secret or secfile for client %s"
474
% self.name)
475
self.host = config.get("host", "")
476
self.created = datetime.datetime.utcnow()
477
self.enabled = config.get("enabled", True)
478
self.last_approval_request = None
479
if self.enabled:
480
self.last_enabled = datetime.datetime.utcnow()
481
else:
482
self.last_enabled = None
483
self.last_checked_ok = None
484
self.last_checker_status = None
485
self.timeout = string_to_delta(config["timeout"])
486
self.extended_timeout = string_to_delta(config
487
["extended_timeout"])
488
self.interval = string_to_delta(config["interval"])
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
489
973
self.checker = None
490
974
self.checker_initiator_tag = None
491
975
self.disable_initiator_tag = None
492
if self.enabled:
493
self.expires = datetime.datetime.utcnow() + self.timeout
494
else:
495
self.expires = None
496
976
self.checker_callback_tag = None
497
self.checker_command = config["checker"]
498
977
self.current_checker_command = None
499
self._approved = None
500
self.approved_by_default = config.get("approved_by_default",
501
True)
978
self.approved = None
502
979
self.approvals_pending = 0
503
self.approval_delay = string_to_delta(
504
config["approval_delay"])
505
self.approval_duration = string_to_delta(
506
config["approval_duration"])
507
self.changedstate = (multiprocessing_manager
508
.Condition(multiprocessing_manager
509
.Lock()))
510
self.client_structure = [attr for attr in
511
self.__dict__.iterkeys()
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
512
984
if not attr.startswith("_")]
513
985
self.client_structure.append("client_structure")
514
515
for name, t in inspect.getmembers(type(self),
516
lambda obj:
517
isinstance(obj,
518
property)):
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
519
989
if not name.startswith("_"):
520
990
self.client_structure.append(name)
521
991
522
992
# Send notice to process children that client state has changed
523
993
def send_changedstate(self):
524
994
with self.changedstate:
525
995
self.changedstate.notify_all()
526
996
527
997
def enable(self):
528
998
"""Start this client's checker and timeout hooks"""
529
999
if getattr(self, "enabled", False):
530
1000
# Already enabled
531
1001
return
532
self.send_changedstate()
533
1002
self.expires = datetime.datetime.utcnow() + self.timeout
534
1003
self.enabled = True
535
1004
self.last_enabled = datetime.datetime.utcnow()
536
1005
self.init_checker()
537
1006
self.send_changedstate()
1007
538
1008
def disable(self, quiet=True):
539
1009
"""Disable this client."""
540
1010
if not getattr(self, "enabled", False):
541
1011
return False
542
1012
if not quiet:
543
self.send_changedstate()
544
if not quiet:
545
1013
logger.info("Disabling client %s", self.name)
546
if getattr(self, "disable_initiator_tag", False):
547
gobject.source_remove(self.disable_initiator_tag)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
548
1016
self.disable_initiator_tag = None
549
1017
self.expires = None
550
if getattr(self, "checker_initiator_tag", False):
551
gobject.source_remove(self.checker_initiator_tag)
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
552
1020
self.checker_initiator_tag = None
553
1021
self.stop_checker()
554
1022
self.enabled = False
555
# Do not run this again if called by a gobject.timeout_add
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
556
1026
return False
557
1027
558
1028
def __del__(self):
559
1029
self.disable()
560
1030
561
1031
def init_checker(self):
562
1032
# Schedule a new checker to be started an 'interval' from now,
563
1033
# and every interval from then on.
564
self.checker_initiator_tag = (gobject.timeout_add
565
(self.interval_milliseconds(),
566
self.start_checker))
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
567
1039
# Schedule a disable() when 'timeout' has passed
568
self.disable_initiator_tag = (gobject.timeout_add
569
(self.timeout_milliseconds(),
570
self.disable))
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
571
1044
# Also start a new checker *right now*.
572
1045
self.start_checker()
573
574
def checker_callback(self, pid, condition, command):
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
575
1049
"""The checker has completed, so take appropriate actions."""
576
1050
self.checker_callback_tag = None
577
1051
self.checker = None
578
if os.WIFEXITED(condition):
579
self.last_checker_status = os.WEXITSTATUS(condition)
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
580
1059
if self.last_checker_status == 0:
581
1060
logger.info("Checker for %(name)s succeeded",
582
1061
vars(self))
583
1062
self.checked_ok()
584
1063
else:
585
logger.info("Checker for %(name)s failed",
586
vars(self))
1064
logger.info("Checker for %(name)s failed", vars(self))
587
1065
else:
588
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
589
1068
logger.warning("Checker for %(name)s crashed?",
590
1069
vars(self))
591
592
def checked_ok(self, timeout=None):
593
"""Bump up the timeout for this client.
594
595
This should only be called when the client has been seen,
596
alive and well.
597
"""
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
598
1081
if timeout is None:
599
1082
timeout = self.timeout
600
self.last_checked_ok = datetime.datetime.utcnow()
601
1083
if self.disable_initiator_tag is not None:
602
gobject.source_remove(self.disable_initiator_tag)
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
603
1086
if getattr(self, "enabled", False):
604
self.disable_initiator_tag = (gobject.timeout_add
605
(_timedelta_to_milliseconds
606
(timeout), self.disable))
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
607
1089
self.expires = datetime.datetime.utcnow() + timeout
608
1090
609
1091
def need_approval(self):
610
1092
self.last_approval_request = datetime.datetime.utcnow()
611
1093
612
1094
def start_checker(self):
613
1095
"""Start a new checker subprocess if one is not running.
614
1096
615
1097
If a checker already exists, leave it running and do
616
1098
nothing."""
617
1099
# The reason for not killing a running checker is that if we
618
# did that, then if a checker (for some reason) started
619
# running slowly and taking more than 'interval' time, the
620
# client would inevitably timeout, since no checker would get
621
# a chance to run to completion. If we instead leave running
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
622
1104
# checkers alone, the checker would have to take more time
623
1105
# than 'timeout' for the client to be disabled, which is as it
624
1106
# should be.
625
626
# If a checker exists, make sure it is not a zombie
627
try:
628
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
629
except (AttributeError, OSError) as error:
630
if (isinstance(error, OSError)
631
and error.errno != errno.ECHILD):
632
raise error
633
else:
634
if pid:
635
logger.warning("Checker was a zombie")
636
gobject.source_remove(self.checker_callback_tag)
637
self.checker_callback(pid, status,
638
self.current_checker_command)
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
639
1112
# Start a new checker if needed
640
1113
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
641
1118
try:
642
# In case checker_command has exactly one % operator
643
command = self.checker_command % self.host
644
except TypeError:
645
# Escape attributes for the shell
646
escaped_attrs = dict(
647
(attr,
648
re.escape(unicode(str(getattr(self, attr, "")),
649
errors=
650
'replace')))
651
for attr in
652
self.runtime_expansions)
653
654
try:
655
command = self.checker_command % escaped_attrs
656
except TypeError as error:
657
logger.error('Could not format string "%s":'
658
' %s', self.checker_command, error)
659
return True # Try again later
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
660
1125
self.current_checker_command = command
661
try:
662
logger.info("Starting checker %r for %s",
663
command, self.name)
664
# We don't need to redirect stdout and stderr, since
665
# in normal mode, that is already done by daemon(),
666
# and in debug mode we don't want to. (Stdin is
667
# always replaced by /dev/null.)
668
self.checker = subprocess.Popen(command,
669
close_fds=True,
670
shell=True, cwd="/")
671
self.checker_callback_tag = (gobject.child_watch_add
672
(self.checker.pid,
673
self.checker_callback,
674
data=command))
675
# The checker may have completed before the gobject
676
# watch was added. Check for this.
677
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
if pid:
679
gobject.source_remove(self.checker_callback_tag)
680
self.checker_callback(pid, status, command)
681
except OSError as error:
682
logger.error("Failed to start subprocess: %s",
683
error)
684
# Re-run this periodically if run by gobject.timeout_add
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
685
1152
return True
686
1153
687
1154
def stop_checker(self):
688
1155
"""Force the checker process, if any, to stop."""
689
1156
if self.checker_callback_tag:
690
gobject.source_remove(self.checker_callback_tag)
1157
GLib.source_remove(self.checker_callback_tag)
691
1158
self.checker_callback_tag = None
692
1159
if getattr(self, "checker", None) is None:
693
1160
return
694
1161
logger.debug("Stopping checker for %(name)s", vars(self))
695
try:
696
os.kill(self.checker.pid, signal.SIGTERM)
697
#time.sleep(0.5)
698
#if self.checker.poll() is None:
699
# os.kill(self.checker.pid, signal.SIGKILL)
700
except OSError as error:
701
if error.errno != errno.ESRCH: # No such process
702
raise
1162
self.checker.terminate()
703
1163
self.checker = None
704
1164
705
1165
706
def dbus_service_property(dbus_interface, signature="v",
707
access="readwrite", byte_arrays=False):
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
708
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
709
1171
become properties on the D-Bus.
710
1172
711
1173
The decorated method will be called with no arguments by "Get"
712
1174
and with one argument by "Set".
713
1175
714
1176
The parameters, where they are supported, are the same as
715
1177
dbus.service.method, except there is only "signature", since the
716
1178
type from Get() and the type sent to Set() is the same.
719
1181
# "Set" method, so we fail early here:
720
1182
if byte_arrays and signature != "ay":
721
1183
raise ValueError("Byte arrays not supported for non-'ay'"
722
" signature %r" % signature)
1184
" signature {!r}".format(signature))
1185
723
1186
def decorator(func):
724
1187
func._dbus_is_property = True
725
1188
func._dbus_interface = dbus_interface
728
1191
func._dbus_name = func.__name__
729
1192
if func._dbus_name.endswith("_dbus_property"):
730
1193
func._dbus_name = func._dbus_name[:-14]
731
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
732
return func
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
733
1240
return decorator
734
1241
735
1242
736
1243
class DBusPropertyException(dbus.exceptions.DBusException):
737
1244
"""A base class for D-Bus property-related exceptions
738
1245
"""
739
def __unicode__(self):
740
return unicode(str(self))
1246
pass
741
1247
742
1248
743
1249
class DBusPropertyAccessException(DBusPropertyException):
752
1258
pass
753
1259
754
1260
755
class DBusObjectWithProperties(dbus.service.Object):
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
756
1351
"""A D-Bus object with properties.
757
1352
758
1353
Classes inheriting from this can use the dbus_service_property
759
1354
decorator to expose methods as D-Bus properties. It exposes the
760
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
761
1356
"""
762
763
@staticmethod
764
def _is_dbus_property(obj):
765
return getattr(obj, "_dbus_is_property", False)
766
767
def _get_all_dbus_properties(self):
768
"""Returns a generator of (name, attribute) pairs
769
"""
770
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
771
for cls in self.__class__.__mro__
772
for name, prop in
773
inspect.getmembers(cls, self._is_dbus_property))
774
1357
775
1358
def _get_dbus_property(self, interface_name, property_name):
776
1359
"""Returns a bound method if one exists which is a D-Bus
777
1360
property with the specified name and interface.
778
1361
"""
779
for cls in self.__class__.__mro__:
780
for name, value in (inspect.getmembers
781
(cls, self._is_dbus_property)):
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
782
1365
if (value._dbus_name == property_name
783
1366
and value._dbus_interface == interface_name):
784
1367
return value.__get__(self)
785
1368
786
1369
# No such property
787
raise DBusPropertyNotFound(self.dbus_object_path + ":"
788
+ interface_name + "."
789
+ property_name)
790
791
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
792
1384
out_signature="v")
793
1385
def Get(self, interface_name, property_name):
794
1386
"""Standard D-Bus property Get() method, see D-Bus standard.
800
1392
if not hasattr(value, "variant_level"):
801
1393
return value
802
1394
return type(value)(value, variant_level=value.variant_level+1)
803
1395
804
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
805
1397
def Set(self, interface_name, property_name, value):
806
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
812
1404
# The byte_arrays option is not supported yet on
813
1405
# signatures other than "ay".
814
1406
if prop._dbus_signature != "ay":
815
raise ValueError
816
value = dbus.ByteArray(''.join(unichr(byte)
817
for byte in value))
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
818
1412
prop(value)
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
821
1416
out_signature="a{sv}")
822
1417
def GetAll(self, interface_name):
823
1418
"""Standard D-Bus property GetAll() method, see D-Bus
824
1419
standard.
825
1420
826
1421
Note: Will not include properties with access="write".
827
1422
"""
828
1423
properties = {}
829
for name, prop in self._get_all_dbus_properties():
1424
for name, prop in self._get_all_dbus_things("property"):
830
1425
if (interface_name
831
1426
and interface_name != prop._dbus_interface):
832
1427
# Interface non-empty but did not match
838
1433
if not hasattr(value, "variant_level"):
839
1434
properties[name] = value
840
1435
continue
841
properties[name] = type(value)(value, variant_level=
842
value.variant_level+1)
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
843
1438
return dbus.Dictionary(properties, signature="sv")
844
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
845
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
846
1449
out_signature="s",
847
1450
path_keyword='object_path',
848
1451
connection_keyword='connection')
849
1452
def Introspect(self, object_path, connection):
850
"""Standard D-Bus method, overloaded to insert property tags.
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
851
1456
"""
852
xmlstring = dbus.service.Object.Introspect(self, object_path,
853
connection)
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
854
1460
try:
855
1461
document = xml.dom.minidom.parseString(xmlstring)
1462
856
1463
def make_tag(document, name, prop):
857
1464
e = document.createElement("property")
858
1465
e.setAttribute("name", name)
859
1466
e.setAttribute("type", prop._dbus_signature)
860
1467
e.setAttribute("access", prop._dbus_access)
861
1468
return e
1469
862
1470
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
863
1472
for tag in (make_tag(document, name, prop)
864
1473
for name, prop
865
in self._get_all_dbus_properties()
1474
in self._get_all_dbus_things("property")
866
1475
if prop._dbus_interface
867
1476
== if_tag.getAttribute("name")):
868
1477
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
869
1494
# Add the names to the return values for the
870
1495
# "org.freedesktop.DBus.Properties" methods
871
1496
if (if_tag.getAttribute("name")
886
1511
except (AttributeError, xml.dom.DOMException,
887
1512
xml.parsers.expat.ExpatError) as error:
888
1513
logger.error("Failed to override Introspection method",
889
error)
890
return xmlstring
891
892
893
def datetime_to_dbus (dt, variant_level=0):
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
894
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
895
1591
if dt is None:
896
return dbus.String("", variant_level = variant_level)
897
return dbus.String(dt.isoformat(),
898
variant_level=variant_level)
899
900
901
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
.__metaclass__):
903
"""Applied to an empty subclass of a D-Bus object, this metaclass
904
will add additional D-Bus attributes matching a certain pattern.
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
905
1618
"""
906
def __new__(mcs, name, bases, attr):
907
# Go through all the base classes which could have D-Bus
908
# methods, signals, or properties in them
909
for base in (b for b in bases
910
if issubclass(b, dbus.service.Object)):
911
# Go though all attributes of the base class
912
for attrname, attribute in inspect.getmembers(base):
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
913
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
914
1628
# with the wrong interface name
915
1629
if (not hasattr(attribute, "_dbus_interface")
916
or not attribute._dbus_interface
917
.startswith("se.recompile.Mandos")):
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
918
1632
continue
919
1633
# Create an alternate D-Bus interface name based on
920
1634
# the current name
921
alt_interface = (attribute._dbus_interface
922
.replace("se.recompile.Mandos",
923
"se.bsnet.fukt.Mandos"))
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
924
1638
# Is this a D-Bus signal?
925
1639
if getattr(attribute, "_dbus_is_signal", False):
926
# Extract the original non-method function by
927
# black magic
928
nonmethod_func = (dict(
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
929
1644
zip(attribute.func_code.co_freevars,
930
attribute.__closure__))["func"]
931
.cell_contents)
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
932
1652
# Create a new, but exactly alike, function
933
1653
# object, and decorate it to be a new D-Bus signal
934
1654
# with the alternate D-Bus interface name
935
new_function = (dbus.service.signal
936
(alt_interface,
937
attribute._dbus_signature)
938
(types.FunctionType(
939
nonmethod_func.func_code,
940
nonmethod_func.func_globals,
941
nonmethod_func.func_name,
942
nonmethod_func.func_defaults,
943
nonmethod_func.func_closure)))
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
944
1666
# Define a creator of a function to call both the
945
# old and new functions, so both the old and new
946
# signals gets sent when the function is called
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
947
1670
def fixscope(func1, func2):
948
1671
"""This function is a scope container to pass
949
1672
func1 and func2 to the "call_both" function
950
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
951
1676
def call_both(*args, **kwargs):
952
1677
"""This function will emit two D-Bus
953
1678
signals by calling func1 and func2"""
954
1679
func1(*args, **kwargs)
955
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
956
1687
return call_both
957
1688
# Create the "call_both" function and add it to
958
1689
# the class
959
attr[attrname] = fixscope(attribute,
960
new_function)
1690
attr[attrname] = fixscope(attribute, new_function)
961
1691
# Is this a D-Bus method?
962
1692
elif getattr(attribute, "_dbus_is_method", False):
963
1693
# Create a new, but exactly alike, function
964
1694
# object. Decorate it to be a new D-Bus method
965
1695
# with the alternate D-Bus interface name. Add it
966
1696
# to the class.
967
attr[attrname] = (dbus.service.method
968
(alt_interface,
969
attribute._dbus_in_signature,
970
attribute._dbus_out_signature)
971
(types.FunctionType
972
(attribute.func_code,
973
attribute.func_globals,
974
attribute.func_name,
975
attribute.func_defaults,
976
attribute.func_closure)))
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
977
1709
# Is this a D-Bus property?
978
1710
elif getattr(attribute, "_dbus_is_property", False):
979
1711
# Create a new, but exactly alike, function
980
1712
# object, and decorate it to be a new D-Bus
981
1713
# property with the alternate D-Bus interface
982
1714
# name. Add it to the class.
983
attr[attrname] = (dbus_service_property
984
(alt_interface,
985
attribute._dbus_signature,
986
attribute._dbus_access,
987
attribute
988
._dbus_get_args_options
989
["byte_arrays"])
990
(types.FunctionType
991
(attribute.func_code,
992
attribute.func_globals,
993
attribute.func_name,
994
attribute.func_defaults,
995
attribute.func_closure)))
996
return type.__new__(mcs, name, bases, attr)
997
998
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
999
1767
class ClientDBus(Client, DBusObjectWithProperties):
1000
1768
"""A Client class using D-Bus
1001
1769
1002
1770
Attributes:
1003
1771
dbus_object_path: dbus.ObjectPath
1004
1772
bus: dbus.SystemBus()
1005
1773
"""
1006
1774
1007
1775
runtime_expansions = (Client.runtime_expansions
1008
+ ("dbus_object_path",))
1009
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
1010
1780
# dbus.service.Object doesn't use super(), so we can't either.
1011
1012
def __init__(self, bus = None, *args, **kwargs):
1781
1782
def __init__(self, bus=None, *args, **kwargs):
1013
1783
self.bus = bus
1014
1784
Client.__init__(self, *args, **kwargs)
1015
1016
self._approvals_pending = 0
1017
1785
# Only now, when this client is initialized, can it show up on
1018
1786
# the D-Bus
1019
client_object_name = unicode(self.name).translate(
1787
client_object_name = str(self.name).translate(
1020
1788
{ord("."): ord("_"),
1021
1789
ord("-"): ord("_")})
1022
self.dbus_object_path = (dbus.ObjectPath
1023
("/clients/" + client_object_name))
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
1024
1792
DBusObjectWithProperties.__init__(self, self.bus,
1025
1793
self.dbus_object_path)
1026
1027
def notifychangeproperty(transform_func,
1028
dbus_name, type_func=lambda x: x,
1029
variant_level=1):
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1030
1800
""" Modify a variable so that it's a property which announces
1031
1801
its changes to DBus.
1032
1802
1033
1803
transform_fun: Function that takes a value and a variant_level
1034
1804
and transforms it to a D-Bus type.
1035
1805
dbus_name: D-Bus name of the variable
1037
1807
to the D-Bus. Default: no transform
1038
1808
variant_level: D-Bus variant level. Default: 1
1039
1809
"""
1040
attrname = "_{0}".format(dbus_name)
1810
attrname = "_{}".format(dbus_name)
1811
1041
1812
def setter(self, value):
1042
1813
if hasattr(self, "dbus_object_path"):
1043
1814
if (not hasattr(self, attrname) or
1044
1815
type_func(getattr(self, attrname, None))
1045
1816
!= type_func(value)):
1046
dbus_value = transform_func(type_func(value),
1047
variant_level
1048
=variant_level)
1049
self.PropertyChanged(dbus.String(dbus_name),
1050
dbus_value)
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1051
1832
setattr(self, attrname, value)
1052
1833
1053
1834
return property(lambda self: getattr(self, attrname), setter)
1054
1055
1835
1056
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1057
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1058
1838
"ApprovalPending",
1059
type_func = bool)
1839
type_func=bool)
1060
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1061
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1062
1842
"LastEnabled")
1063
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1064
type_func = lambda checker:
1065
checker is not None)
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1066
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1067
1847
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1068
1850
last_approval_request = notifychangeproperty(
1069
1851
datetime_to_dbus, "LastApprovalRequest")
1070
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1071
1853
"ApprovedByDefault")
1072
approval_delay = notifychangeproperty(dbus.UInt16,
1073
"ApprovalDelay",
1074
type_func =
1075
_timedelta_to_milliseconds)
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1076
1857
approval_duration = notifychangeproperty(
1077
dbus.UInt16, "ApprovalDuration",
1078
type_func = _timedelta_to_milliseconds)
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1079
1860
host = notifychangeproperty(dbus.String, "Host")
1080
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1081
type_func =
1082
_timedelta_to_milliseconds)
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1083
1864
extended_timeout = notifychangeproperty(
1084
dbus.UInt16, "ExtendedTimeout",
1085
type_func = _timedelta_to_milliseconds)
1086
interval = notifychangeproperty(dbus.UInt16,
1087
"Interval",
1088
type_func =
1089
_timedelta_to_milliseconds)
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1090
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1091
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1092
1874
del notifychangeproperty
1093
1875
1094
1876
def __del__(self, *args, **kwargs):
1095
1877
try:
1096
1878
self.remove_from_connection()
1099
1881
if hasattr(DBusObjectWithProperties, "__del__"):
1100
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1101
1883
Client.__del__(self, *args, **kwargs)
1102
1103
def checker_callback(self, pid, condition, command,
1104
*args, **kwargs):
1105
self.checker_callback_tag = None
1106
self.checker = None
1107
if os.WIFEXITED(condition):
1108
exitstatus = os.WEXITSTATUS(condition)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1109
1892
# Emit D-Bus signal
1110
1893
self.CheckerCompleted(dbus.Int16(exitstatus),
1111
dbus.Int64(condition),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1112
1896
dbus.String(command))
1113
1897
else:
1114
1898
# Emit D-Bus signal
1115
1899
self.CheckerCompleted(dbus.Int16(-1),
1116
dbus.Int64(condition),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1117
1904
dbus.String(command))
1118
1119
return Client.checker_callback(self, pid, condition, command,
1120
*args, **kwargs)
1121
1905
return ret
1906
1122
1907
def start_checker(self, *args, **kwargs):
1123
old_checker = self.checker
1124
if self.checker is not None:
1125
old_checker_pid = self.checker.pid
1126
else:
1127
old_checker_pid = None
1908
old_checker_pid = getattr(self.checker, "pid", None)
1128
1909
r = Client.start_checker(self, *args, **kwargs)
1129
1910
# Only if new checker process was started
1130
1911
if (self.checker is not None
1132
1913
# Emit D-Bus signal
1133
1914
self.CheckerStarted(self.current_checker_command)
1134
1915
return r
1135
1916
1136
1917
def _reset_approved(self):
1137
self._approved = None
1918
self.approved = None
1138
1919
return False
1139
1920
1140
1921
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1141
1925
self.send_changedstate()
1142
self._approved = value
1143
gobject.timeout_add(_timedelta_to_milliseconds
1144
(self.approval_duration),
1145
self._reset_approved)
1146
1147
1148
## D-Bus methods, signals & properties
1149
_interface = "se.recompile.Mandos.Client"
1150
1151
## Signals
1152
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1153
1933
# CheckerCompleted - signal
1154
1934
@dbus.service.signal(_interface, signature="nxs")
1155
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
1156
1936
"D-Bus signal"
1157
1937
pass
1158
1938
1159
1939
# CheckerStarted - signal
1160
1940
@dbus.service.signal(_interface, signature="s")
1161
1941
def CheckerStarted(self, command):
1162
1942
"D-Bus signal"
1163
1943
pass
1164
1944
1165
1945
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1166
1947
@dbus.service.signal(_interface, signature="sv")
1167
1948
def PropertyChanged(self, property, value):
1168
1949
"D-Bus signal"
1169
1950
pass
1170
1951
1171
1952
# GotSecret - signal
1172
1953
@dbus.service.signal(_interface)
1173
1954
def GotSecret(self):
1176
1957
server to mandos-client
1177
1958
"""
1178
1959
pass
1179
1960
1180
1961
# Rejected - signal
1181
1962
@dbus.service.signal(_interface, signature="s")
1182
1963
def Rejected(self, reason):
1183
1964
"D-Bus signal"
1184
1965
pass
1185
1966
1186
1967
# NeedApproval - signal
1187
1968
@dbus.service.signal(_interface, signature="tb")
1188
1969
def NeedApproval(self, timeout, default):
1189
1970
"D-Bus signal"
1190
1971
return self.need_approval()
1191
1192
# NeRwequest - signal
1193
@dbus.service.signal(_interface, signature="s")
1194
def NewRequest(self, ip):
1195
"""D-Bus signal
1196
Is sent after a client request a password.
1197
"""
1198
pass
1199
1200
## Methods
1201
1972
1973
# Methods
1974
1202
1975
# Approve - method
1203
1976
@dbus.service.method(_interface, in_signature="b")
1204
1977
def Approve(self, value):
1205
1978
self.approve(value)
1206
1979
1207
1980
# CheckedOK - method
1208
1981
@dbus.service.method(_interface)
1209
1982
def CheckedOK(self):
1210
1983
self.checked_ok()
1211
1984
1212
1985
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1213
1987
@dbus.service.method(_interface)
1214
1988
def Enable(self):
1215
1989
"D-Bus method"
1216
1990
self.enable()
1217
1991
1218
1992
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1219
1994
@dbus.service.method(_interface)
1220
1995
def StartChecker(self):
1221
1996
"D-Bus method"
1222
1997
self.start_checker()
1223
1998
1224
1999
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1225
2001
@dbus.service.method(_interface)
1226
2002
def Disable(self):
1227
2003
"D-Bus method"
1228
2004
self.disable()
1229
2005
1230
2006
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1231
2008
@dbus.service.method(_interface)
1232
2009
def StopChecker(self):
1233
2010
self.stop_checker()
1234
1235
## Properties
1236
2011
2012
# Properties
2013
1237
2014
# ApprovalPending - property
1238
2015
@dbus_service_property(_interface, signature="b", access="read")
1239
2016
def ApprovalPending_dbus_property(self):
1240
2017
return dbus.Boolean(bool(self.approvals_pending))
1241
2018
1242
2019
# ApprovedByDefault - property
1243
@dbus_service_property(_interface, signature="b",
2020
@dbus_service_property(_interface,
2021
signature="b",
1244
2022
access="readwrite")
1245
2023
def ApprovedByDefault_dbus_property(self, value=None):
1246
2024
if value is None: # get
1247
2025
return dbus.Boolean(self.approved_by_default)
1248
2026
self.approved_by_default = bool(value)
1249
2027
1250
2028
# ApprovalDelay - property
1251
@dbus_service_property(_interface, signature="t",
2029
@dbus_service_property(_interface,
2030
signature="t",
1252
2031
access="readwrite")
1253
2032
def ApprovalDelay_dbus_property(self, value=None):
1254
2033
if value is None: # get
1255
return dbus.UInt64(self.approval_delay_milliseconds())
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1256
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1257
2037
1258
2038
# ApprovalDuration - property
1259
@dbus_service_property(_interface, signature="t",
2039
@dbus_service_property(_interface,
2040
signature="t",
1260
2041
access="readwrite")
1261
2042
def ApprovalDuration_dbus_property(self, value=None):
1262
2043
if value is None: # get
1263
return dbus.UInt64(_timedelta_to_milliseconds(
1264
self.approval_duration))
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1265
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1266
2047
1267
2048
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1268
2051
@dbus_service_property(_interface, signature="s", access="read")
1269
2052
def Name_dbus_property(self):
1270
2053
return dbus.String(self.name)
1271
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1272
2062
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1273
2065
@dbus_service_property(_interface, signature="s", access="read")
1274
2066
def Fingerprint_dbus_property(self):
1275
2067
return dbus.String(self.fingerprint)
1276
2068
1277
2069
# Host - property
1278
@dbus_service_property(_interface, signature="s",
2070
@dbus_service_property(_interface,
2071
signature="s",
1279
2072
access="readwrite")
1280
2073
def Host_dbus_property(self, value=None):
1281
2074
if value is None: # get
1282
2075
return dbus.String(self.host)
1283
self.host = value
1284
2076
self.host = str(value)
2077
1285
2078
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1286
2081
@dbus_service_property(_interface, signature="s", access="read")
1287
2082
def Created_dbus_property(self):
1288
2083
return datetime_to_dbus(self.created)
1289
2084
1290
2085
# LastEnabled - property
1291
2086
@dbus_service_property(_interface, signature="s", access="read")
1292
2087
def LastEnabled_dbus_property(self):
1293
2088
return datetime_to_dbus(self.last_enabled)
1294
2089
1295
2090
# Enabled - property
1296
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1297
2093
access="readwrite")
1298
2094
def Enabled_dbus_property(self, value=None):
1299
2095
if value is None: # get
1302
2098
self.enable()
1303
2099
else:
1304
2100
self.disable()
1305
2101
1306
2102
# LastCheckedOK - property
1307
@dbus_service_property(_interface, signature="s",
2103
@dbus_service_property(_interface,
2104
signature="s",
1308
2105
access="readwrite")
1309
2106
def LastCheckedOK_dbus_property(self, value=None):
1310
2107
if value is not None:
1311
2108
self.checked_ok()
1312
2109
return
1313
2110
return datetime_to_dbus(self.last_checked_ok)
1314
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1315
2117
# Expires - property
1316
2118
@dbus_service_property(_interface, signature="s", access="read")
1317
2119
def Expires_dbus_property(self):
1318
2120
return datetime_to_dbus(self.expires)
1319
2121
1320
2122
# LastApprovalRequest - property
1321
2123
@dbus_service_property(_interface, signature="s", access="read")
1322
2124
def LastApprovalRequest_dbus_property(self):
1323
2125
return datetime_to_dbus(self.last_approval_request)
1324
2126
1325
2127
# Timeout - property
1326
@dbus_service_property(_interface, signature="t",
2128
@dbus_service_property(_interface,
2129
signature="t",
1327
2130
access="readwrite")
1328
2131
def Timeout_dbus_property(self, value=None):
1329
2132
if value is None: # get
1330
return dbus.UInt64(self.timeout_milliseconds())
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1331
2135
self.timeout = datetime.timedelta(0, 0, 0, value)
1332
if getattr(self, "disable_initiator_tag", None) is None:
1333
return
1334
# Reschedule timeout
1335
gobject.source_remove(self.disable_initiator_tag)
1336
self.disable_initiator_tag = None
1337
self.expires = None
1338
time_to_die = _timedelta_to_milliseconds((self
1339
.last_checked_ok
1340
+ self.timeout)
1341
- datetime.datetime
1342
.utcnow())
1343
if time_to_die <= 0:
1344
# The timeout has passed
1345
self.disable()
1346
else:
1347
self.expires = (datetime.datetime.utcnow()
1348
+ datetime.timedelta(milliseconds =
1349
time_to_die))
1350
self.disable_initiator_tag = (gobject.timeout_add
1351
(time_to_die, self.disable))
1352
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1353
2152
# ExtendedTimeout - property
1354
@dbus_service_property(_interface, signature="t",
2153
@dbus_service_property(_interface,
2154
signature="t",
1355
2155
access="readwrite")
1356
2156
def ExtendedTimeout_dbus_property(self, value=None):
1357
2157
if value is None: # get
1358
return dbus.UInt64(self.extended_timeout_milliseconds())
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1359
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1360
2161
1361
2162
# Interval - property
1362
@dbus_service_property(_interface, signature="t",
2163
@dbus_service_property(_interface,
2164
signature="t",
1363
2165
access="readwrite")
1364
2166
def Interval_dbus_property(self, value=None):
1365
2167
if value is None: # get
1366
return dbus.UInt64(self.interval_milliseconds())
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1367
2169
self.interval = datetime.timedelta(0, 0, 0, value)
1368
2170
if getattr(self, "checker_initiator_tag", None) is None:
1369
2171
return
1370
2172
if self.enabled:
1371
2173
# Reschedule checker run
1372
gobject.source_remove(self.checker_initiator_tag)
1373
self.checker_initiator_tag = (gobject.timeout_add
1374
(value, self.start_checker))
1375
self.start_checker() # Start one now, too
1376
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1377
2179
# Checker - property
1378
@dbus_service_property(_interface, signature="s",
2180
@dbus_service_property(_interface,
2181
signature="s",
1379
2182
access="readwrite")
1380
2183
def Checker_dbus_property(self, value=None):
1381
2184
if value is None: # get
1382
2185
return dbus.String(self.checker_command)
1383
self.checker_command = value
1384
2186
self.checker_command = str(value)
2187
1385
2188
# CheckerRunning - property
1386
@dbus_service_property(_interface, signature="b",
2189
@dbus_service_property(_interface,
2190
signature="b",
1387
2191
access="readwrite")
1388
2192
def CheckerRunning_dbus_property(self, value=None):
1389
2193
if value is None: # get
1392
2196
self.start_checker()
1393
2197
else:
1394
2198
self.stop_checker()
1395
2199
1396
2200
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
1397
2204
@dbus_service_property(_interface, signature="o", access="read")
1398
2205
def ObjectPath_dbus_property(self):
1399
return self.dbus_object_path # is already a dbus.ObjectPath
1400
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1401
2208
# Secret = property
1402
@dbus_service_property(_interface, signature="ay",
1403
access="write", byte_arrays=True)
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1404
2216
def Secret_dbus_property(self, value):
1405
self.secret = str(value)
1406
2217
self.secret = bytes(value)
2218
1407
2219
del _interface
1408
2220
1409
2221
1410
2222
class ProxyClient(object):
1411
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1412
2224
self._pipe = child_pipe
1413
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
1414
2226
if not self._pipe.recv():
1415
raise KeyError()
1416
2227
raise KeyError(key_id or fpr)
2228
1417
2229
def __getattribute__(self, name):
1418
if(name == '_pipe'):
2230
if name == '_pipe':
1419
2231
return super(ProxyClient, self).__getattribute__(name)
1420
2232
self._pipe.send(('getattr', name))
1421
2233
data = self._pipe.recv()
1422
2234
if data[0] == 'data':
1423
2235
return data[1]
1424
2236
if data[0] == 'function':
2237
1425
2238
def func(*args, **kwargs):
1426
2239
self._pipe.send(('funcall', name, args, kwargs))
1427
2240
return self._pipe.recv()[1]
2241
1428
2242
return func
1429
2243
1430
2244
def __setattr__(self, name, value):
1431
if(name == '_pipe'):
2245
if name == '_pipe':
1432
2246
return super(ProxyClient, self).__setattr__(name, value)
1433
2247
self._pipe.send(('setattr', name, value))
1434
2248
1435
2249
1436
class ClientDBusTransitional(ClientDBus):
1437
__metaclass__ = AlternateDBusNamesMetaclass
1438
1439
1440
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1441
2251
"""A class to handle client connections.
1442
2252
1443
2253
Instantiated once for each connection to handle it.
1444
2254
Note: This will run in its own forked process."""
1445
2255
1446
2256
def handle(self):
1447
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
1448
2258
logger.info("TCP connection from: %s",
1449
unicode(self.client_address))
2259
str(self.client_address))
1450
2260
logger.debug("Pipe FD: %d",
1451
2261
self.server.child_pipe.fileno())
1452
1453
session = (gnutls.connection
1454
.ClientSession(self.request,
1455
gnutls.connection
1456
.X509Credentials()))
1457
1458
# Note: gnutls.connection.X509Credentials is really a
1459
# generic GnuTLS certificate credentials object so long as
1460
# no X.509 keys are added to it. Therefore, we can use it
1461
# here despite using OpenPGP certificates.
1462
1463
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1464
# "+AES-256-CBC", "+SHA1",
1465
# "+COMP-NULL", "+CTYPE-OPENPGP",
1466
# "+DHE-DSS"))
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1467
2269
# Use a fallback default, since this MUST be set.
1468
2270
priority = self.server.gnutls_priority
1469
2271
if priority is None:
1470
2272
priority = "NORMAL"
1471
(gnutls.library.functions
1472
.gnutls_priority_set_direct(session._c_object,
1473
priority, None))
1474
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1475
2277
# Start communication using the Mandos protocol
1476
2278
# Get protocol number
1477
2279
line = self.request.makefile().readline()
1478
2280
logger.debug("Protocol version: %r", line)
1479
2281
try:
1480
2282
if int(line.strip().split()[0]) > 1:
1481
raise RuntimeError
2283
raise RuntimeError(line)
1482
2284
except (ValueError, IndexError, RuntimeError) as error:
1483
2285
logger.error("Unknown protocol version: %s", error)
1484
2286
return
1485
2287
1486
2288
# Start GnuTLS connection
1487
2289
try:
1488
2290
session.handshake()
1489
except gnutls.errors.GNUTLSError as error:
2291
except gnutls.Error as error:
1490
2292
logger.warning("Handshake failed: %s", error)
1491
2293
# Do not run session.bye() here: the session is not
1492
2294
# established. Just abandon the request.
1493
2295
return
1494
2296
logger.debug("Handshake succeeded")
1495
2297
1496
2298
approval_required = False
1497
2299
try:
1498
try:
1499
fpr = self.fingerprint(self.peer_certificate
1500
(session))
1501
except (TypeError,
1502
gnutls.errors.GNUTLSError) as error:
1503
logger.warning("Bad certificate: %s", error)
1504
return
1505
logger.debug("Fingerprint: %s", fpr)
1506
if self.server.use_dbus:
1507
# Emit D-Bus signal
1508
client.NewRequest(str(self.client_address))
1509
1510
try:
1511
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1512
2322
self.client_address)
1513
2323
except KeyError:
1514
2324
return
1515
2325
1516
2326
if client.approval_delay:
1517
2327
delay = client.approval_delay
1518
2328
client.approvals_pending += 1
1519
2329
approval_required = True
1520
2330
1521
2331
while True:
1522
2332
if not client.enabled:
1523
2333
logger.info("Client %s is disabled",
1524
client.name)
2334
client.name)
1525
2335
if self.server.use_dbus:
1526
2336
# Emit D-Bus signal
1527
2337
client.Rejected("Disabled")
1528
2338
return
1529
1530
if client._approved or not client.approval_delay:
1531
#We are approved or approval is disabled
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1532
2342
break
1533
elif client._approved is None:
2343
elif client.approved is None:
1534
2344
logger.info("Client %s needs approval",
1535
2345
client.name)
1536
2346
if self.server.use_dbus:
1537
2347
# Emit D-Bus signal
1538
2348
client.NeedApproval(
1539
client.approval_delay_milliseconds(),
1540
client.approved_by_default)
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1541
2351
else:
1542
2352
logger.warning("Client %s was not approved",
1543
2353
client.name)
1545
2355
# Emit D-Bus signal
1546
2356
client.Rejected("Denied")
1547
2357
return
1548
1549
#wait until timeout or approved
2358
2359
# wait until timeout or approved
1550
2360
time = datetime.datetime.now()
1551
2361
client.changedstate.acquire()
1552
(client.changedstate.wait
1553
(float(client._timedelta_to_milliseconds(delay)
1554
/ 1000)))
2362
client.changedstate.wait(delay.total_seconds())
1555
2363
client.changedstate.release()
1556
2364
time2 = datetime.datetime.now()
1557
2365
if (time2 - time) >= delay:
1567
2375
break
1568
2376
else:
1569
2377
delay -= time2 - time
1570
1571
sent_size = 0
1572
while sent_size < len(client.secret):
1573
try:
1574
sent = session.send(client.secret[sent_size:])
1575
except gnutls.errors.GNUTLSError as error:
1576
logger.warning("gnutls send failed")
1577
return
1578
logger.debug("Sent: %d, remaining: %d",
1579
sent, len(client.secret)
1580
- (sent_size + sent))
1581
sent_size += sent
1582
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1583
2386
logger.info("Sending secret to %s", client.name)
1584
2387
# bump the timeout using extended_timeout
1585
client.checked_ok(client.extended_timeout)
2388
client.bump_timeout(client.extended_timeout)
1586
2389
if self.server.use_dbus:
1587
2390
# Emit D-Bus signal
1588
2391
client.GotSecret()
1589
2392
1590
2393
finally:
1591
2394
if approval_required:
1592
2395
client.approvals_pending -= 1
1593
2396
try:
1594
2397
session.bye()
1595
except gnutls.errors.GNUTLSError as error:
1596
logger.warning("GnuTLS bye failed")
1597
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1598
2402
@staticmethod
1599
2403
def peer_certificate(session):
1600
"Return the peer's OpenPGP certificate as a bytestring"
1601
# If not an OpenPGP certificate...
1602
if (gnutls.library.functions
1603
.gnutls_certificate_type_get(session._c_object)
1604
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1605
# ...do the normal thing
1606
return session.peer_certificate
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1607
2420
list_size = ctypes.c_uint(1)
1608
cert_list = (gnutls.library.functions
1609
.gnutls_certificate_get_peers
2421
cert_list = (gnutls.certificate_get_peers
1610
2422
(session._c_object, ctypes.byref(list_size)))
1611
2423
if not bool(cert_list) and list_size.value != 0:
1612
raise gnutls.errors.GNUTLSError("error getting peer"
1613
" certificate")
2424
raise gnutls.Error("error getting peer certificate")
1614
2425
if list_size.value == 0:
1615
2426
return None
1616
2427
cert = cert_list[0]
1617
2428
return ctypes.string_at(cert.data, cert.size)
1618
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1619
2464
@staticmethod
1620
2465
def fingerprint(openpgp):
1621
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1622
2467
# New GnuTLS "datum" with the OpenPGP public key
1623
datum = (gnutls.library.types
1624
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1625
ctypes.POINTER
1626
(ctypes.c_ubyte)),
1627
ctypes.c_uint(len(openpgp))))
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1628
2472
# New empty GnuTLS certificate
1629
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1630
(gnutls.library.functions
1631
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1632
2475
# Import the OpenPGP public key into the certificate
1633
(gnutls.library.functions
1634
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1635
gnutls.library.constants
1636
.GNUTLS_OPENPGP_FMT_RAW))
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1637
2478
# Verify the self signature in the key
1638
2479
crtverify = ctypes.c_uint()
1639
(gnutls.library.functions
1640
.gnutls_openpgp_crt_verify_self(crt, 0,
1641
ctypes.byref(crtverify)))
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1642
2482
if crtverify.value != 0:
1643
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1644
raise (gnutls.errors.CertificateSecurityError
1645
("Verify failed"))
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1646
2486
# New buffer for the fingerprint
1647
2487
buf = ctypes.create_string_buffer(20)
1648
2488
buf_len = ctypes.c_size_t()
1649
2489
# Get the fingerprint from the certificate into the buffer
1650
(gnutls.library.functions
1651
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1652
ctypes.byref(buf_len)))
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1653
2492
# Deinit the certificate
1654
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2493
gnutls.openpgp_crt_deinit(crt)
1655
2494
# Convert the buffer to a Python bytestring
1656
2495
fpr = ctypes.string_at(buf, buf_len.value)
1657
2496
# Convert the bytestring to hexadecimal notation
1661
2500
1662
2501
class MultiprocessingMixIn(object):
1663
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
1664
2504
def sub_process_main(self, request, address):
1665
2505
try:
1666
2506
self.finish_request(request, address)
1667
except:
2507
except Exception:
1668
2508
self.handle_error(request, address)
1669
2509
self.close_request(request)
1670
2510
1671
2511
def process_request(self, request, address):
1672
2512
"""Start a new process to process the request."""
1673
proc = multiprocessing.Process(target = self.sub_process_main,
1674
args = (request,
1675
address))
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1676
2515
proc.start()
1677
2516
return proc
1678
2517
1679
2518
1680
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1681
2520
""" adds a pipe to the MixIn """
2521
1682
2522
def process_request(self, request, client_address):
1683
2523
"""Overrides and wraps the original process_request().
1684
2524
1685
2525
This function creates a new pipe in self.pipe
1686
2526
"""
1687
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1688
2528
1689
2529
proc = MultiprocessingMixIn.process_request(self, request,
1690
2530
client_address)
1691
2531
self.child_pipe.close()
1692
2532
self.add_pipe(parent_pipe, proc)
1693
2533
1694
2534
def add_pipe(self, parent_pipe, proc):
1695
2535
"""Dummy function; override as necessary"""
1696
raise NotImplementedError
2536
raise NotImplementedError()
1697
2537
1698
2538
1699
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1700
2540
socketserver.TCPServer, object):
1701
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1702
2542
1703
2543
Attributes:
1704
2544
enabled: Boolean; whether this server is activated yet
1705
2545
interface: None or a network interface name (string)
1706
2546
use_ipv6: Boolean; to use IPv6 or not
1707
2547
"""
2548
1708
2549
def __init__(self, server_address, RequestHandlerClass,
1709
interface=None, use_ipv6=True):
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1710
2556
self.interface = interface
1711
2557
if use_ipv6:
1712
2558
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
1713
2586
socketserver.TCPServer.__init__(self, server_address,
1714
2587
RequestHandlerClass)
2588
1715
2589
def server_bind(self):
1716
2590
"""This overrides the normal server_bind() function
1717
2591
to bind to an interface if one was specified, and also NOT to
1718
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
1719
2594
if self.interface is not None:
1720
2595
if SO_BINDTODEVICE is None:
1721
logger.error("SO_BINDTODEVICE does not exist;"
1722
" cannot bind to interface %s",
1723
self.interface)
1724
else:
1725
try:
1726
self.socket.setsockopt(socket.SOL_SOCKET,
1727
SO_BINDTODEVICE,
1728
str(self.interface
1729
+ '\0'))
1730
except socket.error as error:
1731
if error[0] == errno.EPERM:
1732
logger.error("No permission to"
1733
" bind to interface %s",
1734
self.interface)
1735
elif error[0] == errno.ENOPROTOOPT:
1736
logger.error("SO_BINDTODEVICE not available;"
1737
" cannot bind to interface %s",
1738
self.interface)
1739
else:
1740
raise
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1741
2617
# Only bind(2) the socket if we really need to.
1742
2618
if self.server_address[0] or self.server_address[1]:
1743
2619
if not self.server_address[0]:
1744
2620
if self.address_family == socket.AF_INET6:
1745
any_address = "::" # in6addr_any
2621
any_address = "::" # in6addr_any
1746
2622
else:
1747
any_address = socket.INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
1748
2624
self.server_address = (any_address,
1749
2625
self.server_address[1])
1750
2626
elif not self.server_address[1]:
1751
self.server_address = (self.server_address[0],
1752
0)
2627
self.server_address = (self.server_address[0], 0)
1753
2628
# if self.interface:
1754
2629
# self.server_address = (self.server_address[0],
1755
2630
# 0, # port
1761
2636
1762
2637
class MandosServer(IPv6_TCPServer):
1763
2638
"""Mandos server.
1764
2639
1765
2640
Attributes:
1766
2641
clients: set of Client objects
1767
2642
gnutls_priority GnuTLS priority string
1768
2643
use_dbus: Boolean; to emit D-Bus signals or not
1769
1770
Assumes a gobject.MainLoop event loop.
2644
2645
Assumes a GLib.MainLoop event loop.
1771
2646
"""
2647
1772
2648
def __init__(self, server_address, RequestHandlerClass,
1773
interface=None, use_ipv6=True, clients=None,
1774
gnutls_priority=None, use_dbus=True):
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1775
2655
self.enabled = False
1776
2656
self.clients = clients
1777
2657
if self.clients is None:
1780
2660
self.gnutls_priority = gnutls_priority
1781
2661
IPv6_TCPServer.__init__(self, server_address,
1782
2662
RequestHandlerClass,
1783
interface = interface,
1784
use_ipv6 = use_ipv6)
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1785
2667
def server_activate(self):
1786
2668
if self.enabled:
1787
2669
return socketserver.TCPServer.server_activate(self)
1788
2670
1789
2671
def enable(self):
1790
2672
self.enabled = True
1791
2673
1792
2674
def add_pipe(self, parent_pipe, proc):
1793
2675
# Call "handle_ipc" for both data and EOF events
1794
gobject.io_add_watch(parent_pipe.fileno(),
1795
gobject.IO_IN | gobject.IO_HUP,
1796
functools.partial(self.handle_ipc,
1797
parent_pipe =
1798
parent_pipe,
1799
proc = proc))
1800
1801
def handle_ipc(self, source, condition, parent_pipe=None,
1802
proc = None, client_object=None):
1803
condition_names = {
1804
gobject.IO_IN: "IN", # There is data to read.
1805
gobject.IO_OUT: "OUT", # Data can be written (without
1806
# blocking).
1807
gobject.IO_PRI: "PRI", # There is urgent data to read.
1808
gobject.IO_ERR: "ERR", # Error condition.
1809
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1810
# broken, usually for pipes and
1811
# sockets).
1812
}
1813
conditions_string = ' | '.join(name
1814
for cond, name in
1815
condition_names.iteritems()
1816
if cond & condition)
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1817
2687
# error, or the other end of multiprocessing.Pipe has closed
1818
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1819
2689
# Wait for other process to exit
1820
2690
proc.join()
1821
2691
return False
1822
2692
1823
2693
# Read a request from the child
1824
2694
request = parent_pipe.recv()
1825
2695
command = request[0]
1826
2696
1827
2697
if command == 'init':
1828
fpr = request[1]
1829
address = request[2]
1830
1831
for c in self.clients.itervalues():
1832
if c.fingerprint == fpr:
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1833
2709
client = c
1834
2710
break
1835
2711
else:
1836
logger.info("Client not found for fingerprint: %s, ad"
1837
"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1838
2714
if self.use_dbus:
1839
2715
# Emit D-Bus signal
1840
mandos_dbus_service.ClientNotFound(fpr,
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1841
2717
address[0])
1842
2718
parent_pipe.send(False)
1843
2719
return False
1844
1845
gobject.io_add_watch(parent_pipe.fileno(),
1846
gobject.IO_IN | gobject.IO_HUP,
1847
functools.partial(self.handle_ipc,
1848
parent_pipe =
1849
parent_pipe,
1850
proc = proc,
1851
client_object =
1852
client))
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1853
2728
parent_pipe.send(True)
1854
2729
# remove the old hook in favor of the new above hook on
1855
2730
# same fileno
1858
2733
funcname = request[1]
1859
2734
args = request[2]
1860
2735
kwargs = request[3]
1861
2736
1862
2737
parent_pipe.send(('data', getattr(client_object,
1863
2738
funcname)(*args,
1864
**kwargs)))
1865
2739
**kwargs)))
2740
1866
2741
if command == 'getattr':
1867
2742
attrname = request[1]
1868
if callable(client_object.__getattribute__(attrname)):
1869
parent_pipe.send(('function',))
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1870
2746
else:
1871
parent_pipe.send(('data', client_object
1872
.__getattribute__(attrname)))
1873
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1874
2750
if command == 'setattr':
1875
2751
attrname = request[1]
1876
2752
value = request[2]
1877
2753
setattr(client_object, attrname, value)
1878
2754
1879
2755
return True
1880
2756
1881
2757
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
1882
2857
def string_to_delta(interval):
1883
2858
"""Parse a string and return a datetime.timedelta
1884
2859
1885
2860
>>> string_to_delta('7d')
1886
2861
datetime.timedelta(7)
1887
2862
>>> string_to_delta('60s')
1895
2870
>>> string_to_delta('5m 30s')
1896
2871
datetime.timedelta(0, 330)
1897
2872
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
1898
2879
timevalue = datetime.timedelta(0)
1899
2880
for s in interval.split():
1900
2881
try:
1901
suffix = unicode(s[-1])
2882
suffix = s[-1]
1902
2883
value = int(s[:-1])
1903
2884
if suffix == "d":
1904
2885
delta = datetime.timedelta(value)
1911
2892
elif suffix == "w":
1912
2893
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1913
2894
else:
1914
raise ValueError("Unknown suffix %r" % suffix)
1915
except (ValueError, IndexError) as e:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1916
2897
raise ValueError(*(e.args))
1917
2898
timevalue += delta
1918
2899
return timevalue
1919
2900
1920
2901
1921
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
1922
2903
"""See daemon(3). Standard BSD Unix function.
1923
2904
1924
2905
This should really exist as os.daemon, but it doesn't (yet)."""
1925
2906
if os.fork():
1926
2907
sys.exit()
1931
2912
sys.exit()
1932
2913
if not noclose:
1933
2914
# Close all standard open file descriptors
1934
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1935
2916
if not stat.S_ISCHR(os.fstat(null).st_mode):
1936
2917
raise OSError(errno.ENODEV,
1937
"%s not a character device"
1938
% os.path.devnull)
2918
"{} not a character device"
2919
.format(os.devnull))
1939
2920
os.dup2(null, sys.stdin.fileno())
1940
2921
os.dup2(null, sys.stdout.fileno())
1941
2922
os.dup2(null, sys.stderr.fileno())
1944
2925
1945
2926
1946
2927
def main():
1947
2928
1948
2929
##################################################################
1949
2930
# Parsing of options, both command line and config file
1950
2931
1951
2932
parser = argparse.ArgumentParser()
1952
2933
parser.add_argument("-v", "--version", action="version",
1953
version = "%%(prog)s %s" % version,
2934
version="%(prog)s {}".format(version),
1954
2935
help="show version number and exit")
1955
2936
parser.add_argument("-i", "--interface", metavar="IF",
1956
2937
help="Bind to interface IF")
1962
2943
help="Run self-test")
1963
2944
parser.add_argument("--debug", action="store_true",
1964
2945
help="Debug mode; run in foreground and log"
1965
" to terminal")
2946
" to terminal", default=None)
1966
2947
parser.add_argument("--debuglevel", metavar="LEVEL",
1967
2948
help="Debug level for stdout output")
1968
2949
parser.add_argument("--priority", help="GnuTLS"
1975
2956
" files")
1976
2957
parser.add_argument("--no-dbus", action="store_false",
1977
2958
dest="use_dbus", help="Do not provide D-Bus"
1978
" system bus interface")
2959
" system bus interface", default=None)
1979
2960
parser.add_argument("--no-ipv6", action="store_false",
1980
dest="use_ipv6", help="Do not use IPv6")
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
1981
2963
parser.add_argument("--no-restore", action="store_false",
1982
2964
dest="restore", help="Do not restore stored"
1983
" state")
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
1984
2969
parser.add_argument("--statedir", metavar="DIR",
1985
2970
help="Directory to save/restore state in")
1986
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
2976
1987
2977
options = parser.parse_args()
1988
2978
1989
2979
if options.check:
1990
2980
import doctest
1991
doctest.testmod()
1992
sys.exit()
1993
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1994
2984
# Default values for config file for server-global settings
1995
server_defaults = { "interface": "",
1996
"address": "",
1997
"port": "",
1998
"debug": "False",
1999
"priority":
2000
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2001
"servicename": "Mandos",
2002
"use_dbus": "True",
2003
"use_ipv6": "True",
2004
"debuglevel": "",
2005
"restore": "True",
2006
"statedir": "/var/lib/mandos"
2007
}
2008
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2009
3008
# Parse config file for server-global settings
2010
3009
server_config = configparser.SafeConfigParser(server_defaults)
2011
3010
del server_defaults
2012
server_config.read(os.path.join(options.configdir,
2013
"mandos.conf"))
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2014
3012
# Convert the SafeConfigParser object to a dict
2015
3013
server_settings = server_config.defaults()
2016
3014
# Use the appropriate methods on the non-string config options
2017
for option in ("debug", "use_dbus", "use_ipv6"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2018
3017
server_settings[option] = server_config.getboolean("DEFAULT",
2019
3018
option)
2020
3019
if server_settings["port"]:
2021
3020
server_settings["port"] = server_config.getint("DEFAULT",
2022
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
2023
3031
del server_config
2024
3032
2025
3033
# Override the settings from the config file with command line
2026
3034
# options, if set.
2027
3035
for option in ("interface", "address", "port", "debug",
2028
"priority", "servicename", "configdir",
2029
"use_dbus", "use_ipv6", "debuglevel", "restore",
2030
"statedir"):
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
2031
3039
value = getattr(options, option)
2032
3040
if value is not None:
2033
3041
server_settings[option] = value
2034
3042
del options
2035
3043
# Force all strings to be unicode
2036
3044
for option in server_settings.keys():
2037
if type(server_settings[option]) is str:
2038
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
2039
3055
# Now we have our good server settings in "server_settings"
2040
3056
2041
3057
##################################################################
2042
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
2043
3064
# For convenience
2044
3065
debug = server_settings["debug"]
2045
3066
debuglevel = server_settings["debuglevel"]
2047
3068
use_ipv6 = server_settings["use_ipv6"]
2048
3069
stored_state_path = os.path.join(server_settings["statedir"],
2049
3070
stored_state_file)
2050
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
2051
3074
if debug:
2052
initlogger(logging.DEBUG)
3075
initlogger(debug, logging.DEBUG)
2053
3076
else:
2054
3077
if not debuglevel:
2055
initlogger()
3078
initlogger(debug)
2056
3079
else:
2057
3080
level = getattr(logging, debuglevel.upper())
2058
initlogger(level)
2059
3081
initlogger(debug, level)
3082
2060
3083
if server_settings["servicename"] != "Mandos":
2061
syslogger.setFormatter(logging.Formatter
2062
('Mandos (%s) [%%(process)d]:'
2063
' %%(levelname)s: %%(message)s'
2064
% server_settings["servicename"]))
2065
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2066
3089
# Parse config file with clients
2067
client_defaults = { "timeout": "5m",
2068
"extended_timeout": "15m",
2069
"interval": "2m",
2070
"checker": "fping -q -- %%(host)s",
2071
"host": "",
2072
"approval_delay": "0s",
2073
"approval_duration": "1s",
2074
}
2075
client_config = configparser.SafeConfigParser(client_defaults)
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
2076
3092
client_config.read(os.path.join(server_settings["configdir"],
2077
3093
"clients.conf"))
2078
3094
2079
3095
global mandos_dbus_service
2080
3096
mandos_dbus_service = None
2081
2082
tcp_server = MandosServer((server_settings["address"],
2083
server_settings["port"]),
2084
ClientHandler,
2085
interface=(server_settings["interface"]
2086
or None),
2087
use_ipv6=use_ipv6,
2088
gnutls_priority=
2089
server_settings["priority"],
2090
use_dbus=use_dbus)
2091
if not debug:
2092
pidfilename = "/var/run/mandos.pid"
2093
try:
2094
pidfile = open(pidfilename, "w")
2095
except IOError:
2096
logger.error("Could not open file %r", pidfilename)
2097
2098
try:
2099
uid = pwd.getpwnam("_mandos").pw_uid
2100
gid = pwd.getpwnam("_mandos").pw_gid
2101
except KeyError:
2102
try:
2103
uid = pwd.getpwnam("mandos").pw_uid
2104
gid = pwd.getpwnam("mandos").pw_gid
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2105
3127
except KeyError:
2106
try:
2107
uid = pwd.getpwnam("nobody").pw_uid
2108
gid = pwd.getpwnam("nobody").pw_gid
2109
except KeyError:
2110
uid = 65534
2111
gid = 65534
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2112
3132
try:
2113
3133
os.setgid(gid)
2114
3134
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
2115
3138
except OSError as error:
2116
if error[0] != errno.EPERM:
2117
raise error
2118
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2119
3144
if debug:
2120
3145
# Enable all possible GnuTLS debugging
2121
3146
2122
3147
# "Use a log level over 10 to enable all debugging options."
2123
3148
# - GnuTLS manual
2124
gnutls.library.functions.gnutls_global_set_log_level(11)
2125
2126
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2127
3152
def debug_gnutls(level, string):
2128
3153
logger.debug("GnuTLS: %s", string[:-1])
2129
2130
(gnutls.library.functions
2131
.gnutls_global_set_log_function(debug_gnutls))
2132
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2133
3157
# Redirect stdin so all checkers get /dev/null
2134
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2135
3159
os.dup2(null, sys.stdin.fileno())
2136
3160
if null > 2:
2137
3161
os.close(null)
2138
else:
2139
# No console logging
2140
logger.removeHandler(console)
2141
3162
2142
3163
# Need to fork before connecting to D-Bus
2143
if not debug:
3164
if not foreground:
2144
3165
# Close all input and output, do double fork, etc.
2145
3166
daemon()
2146
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2147
3172
global main_loop
2148
3173
# From the Avahi example code
2149
DBusGMainLoop(set_as_default=True )
2150
main_loop = gobject.MainLoop()
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2151
3176
bus = dbus.SystemBus()
2152
3177
# End of Avahi example code
2153
3178
if use_dbus:
2154
3179
try:
2155
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
2156
bus, do_not_queue=True)
2157
old_bus_name = (dbus.service.BusName
2158
("se.bsnet.fukt.Mandos", bus,
2159
do_not_queue=True))
2160
except dbus.exceptions.NameExistsException as e:
2161
logger.error(unicode(e) + ", disabling D-Bus")
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2162
3188
use_dbus = False
2163
3189
server_settings["use_dbus"] = False
2164
3190
tcp_server.use_dbus = False
2165
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2166
service = AvahiServiceToSyslog(name =
2167
server_settings["servicename"],
2168
servicetype = "_mandos._tcp",
2169
protocol = protocol, bus = bus)
2170
if server_settings["interface"]:
2171
service.interface = (if_nametoindex
2172
(str(server_settings["interface"])))
2173
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2174
3202
global multiprocessing_manager
2175
3203
multiprocessing_manager = multiprocessing.Manager()
2176
3204
2177
3205
client_class = Client
2178
3206
if use_dbus:
2179
client_class = functools.partial(ClientDBusTransitional,
2180
bus = bus)
2181
2182
special_settings = {
2183
# Some settings need to be accessd by special methods;
2184
# booleans need .getboolean(), etc. Here is a list of them:
2185
"approved_by_default":
2186
lambda section:
2187
client_config.getboolean(section, "approved_by_default"),
2188
"enabled":
2189
lambda section:
2190
client_config.getboolean(section, "enabled"),
2191
}
2192
# Construct a new dict of client settings of this form:
2193
# { client_name: {setting_name: value, ...}, ...}
2194
# with exceptions for any special settings as defined above
2195
client_settings = dict((clientname,
2196
dict((setting,
2197
(value
2198
if setting not in special_settings
2199
else special_settings[setting]
2200
(clientname)))
2201
for setting, value in
2202
client_config.items(clientname)))
2203
for clientname in client_config.sections())
2204
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
2205
3210
old_client_settings = {}
2206
clients_data = []
2207
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
2208
3221
# Get client data and settings from last running state.
2209
3222
if server_settings["restore"]:
2210
3223
try:
2211
3224
with open(stored_state_path, "rb") as stored_state:
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2214
3274
os.remove(stored_state_path)
2215
3275
except IOError as e:
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2219
3282
raise
2220
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
2221
3288
with PGPEngine() as pgp:
2222
for client in clients_data:
2223
client_name = client["name"]
2224
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
2225
3294
# Decide which value to use after restoring saved state.
2226
3295
# We have three different values: Old config file,
2227
3296
# new config file, and saved state.
2232
3301
# For each value in new config, check if it
2233
3302
# differs from the old config value (Except for
2234
3303
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
setattr(client, name, value)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
2239
3308
except KeyError:
2240
3309
pass
2241
3310
2242
3311
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was sucessful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"] and client["last_checked_ok"]:
2247
if ((datetime.datetime.utcnow()
2248
- client["last_checked_ok"])
2249
> client["interval"]):
2250
if client["last_checker_status"] != 0:
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
2251
3331
client["enabled"] = False
2252
3332
else:
2253
client["expires"] = (datetime.datetime
2254
.utcnow()
2255
+ client["timeout"])
2256
2257
client["changedstate"] = (multiprocessing_manager
2258
.Condition
2259
(multiprocessing_manager
2260
.Lock()))
2261
if use_dbus:
2262
new_client = (ClientDBusTransitional.__new__
2263
(ClientDBusTransitional))
2264
tcp_server.clients[client_name] = new_client
2265
new_client.bus = bus
2266
for name, value in client.iteritems():
2267
setattr(new_client, name, value)
2268
client_object_name = unicode(client_name).translate(
2269
{ord("."): ord("_"),
2270
ord("-"): ord("_")})
2271
new_client.dbus_object_path = (dbus.ObjectPath
2272
("/clients/"
2273
+ client_object_name))
2274
DBusObjectWithProperties.__init__(new_client,
2275
new_client.bus,
2276
new_client
2277
.dbus_object_path)
2278
else:
2279
tcp_server.clients[client_name] = (Client.__new__
2280
(Client))
2281
for name, value in client.iteritems():
2282
setattr(tcp_server.clients[client_name],
2283
name, value)
2284
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2285
3339
try:
2286
tcp_server.clients[client_name].secret = (
2287
pgp.decrypt(tcp_server.clients[client_name]
2288
.encrypted_secret,
2289
client_settings[client_name]
2290
["secret"]))
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
2291
3343
except PGPError:
2292
3344
# If decryption fails, we use secret from new settings
2293
tcp_server.clients[client_name].secret = (
2294
client_settings[client_name]["secret"])
2295
2296
# Create/remove clients based on new changes made to config
2297
for clientname in set(old_client_settings) - set(client_settings):
2298
del tcp_server.clients[clientname]
2299
for clientname in set(client_settings) - set(old_client_settings):
2300
tcp_server.clients[clientname] = (client_class(name
2301
= clientname,
2302
config =
2303
client_settings
2304
[clientname]))
2305
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
2306
3365
if not tcp_server.clients:
2307
3366
logger.warning("No clients defined")
2308
2309
if not debug:
2310
try:
2311
with pidfile:
2312
pid = os.getpid()
2313
pidfile.write(str(pid) + "\n".encode("utf-8"))
2314
del pidfile
2315
except IOError:
2316
logger.error("Could not write to file %r with PID %d",
2317
pidfilename, pid)
2318
except NameError:
2319
# "pidfile" was never created
2320
pass
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2321
3378
del pidfilename
2322
2323
signal.signal(signal.SIGINT, signal.SIG_IGN)
2324
2325
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2326
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2327
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2328
3384
if use_dbus:
2329
class MandosDBusService(dbus.service.Object):
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2330
3389
"""A D-Bus proxy object"""
3390
2331
3391
def __init__(self):
2332
3392
dbus.service.Object.__init__(self, bus, "/")
3393
2333
3394
_interface = "se.recompile.Mandos"
2334
3395
2335
3396
@dbus.service.signal(_interface, signature="o")
2336
3397
def ClientAdded(self, objpath):
2337
3398
"D-Bus signal"
2338
3399
pass
2339
3400
2340
3401
@dbus.service.signal(_interface, signature="ss")
2341
def ClientNotFound(self, fingerprint, address):
3402
def ClientNotFound(self, key_id, address):
2342
3403
"D-Bus signal"
2343
3404
pass
2344
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2345
3408
@dbus.service.signal(_interface, signature="os")
2346
3409
def ClientRemoved(self, objpath, name):
2347
3410
"D-Bus signal"
2348
3411
pass
2349
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2350
3415
@dbus.service.method(_interface, out_signature="ao")
2351
3416
def GetAllClients(self):
2352
3417
"D-Bus method"
2353
return dbus.Array(c.dbus_object_path
2354
for c in
2355
tcp_server.clients.itervalues())
2356
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2357
3423
@dbus.service.method(_interface,
2358
3424
out_signature="a{oa{sv}}")
2359
3425
def GetAllClientsWithProperties(self):
2360
3426
"D-Bus method"
2361
3427
return dbus.Dictionary(
2362
((c.dbus_object_path, c.GetAll(""))
2363
for c in tcp_server.clients.itervalues()),
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2364
3431
signature="oa{sv}")
2365
3432
2366
3433
@dbus.service.method(_interface, in_signature="o")
2367
3434
def RemoveClient(self, object_path):
2368
3435
"D-Bus method"
2369
for c in tcp_server.clients.itervalues():
3436
for c in tcp_server.clients.values():
2370
3437
if c.dbus_object_path == object_path:
2371
3438
del tcp_server.clients[c.name]
2372
3439
c.remove_from_connection()
2373
# Don't signal anything except ClientRemoved
3440
# Don't signal the disabling
2374
3441
c.disable(quiet=True)
2375
# Emit D-Bus signal
2376
self.ClientRemoved(object_path, c.name)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2377
3444
return
2378
3445
raise KeyError(object_path)
2379
3446
2380
3447
del _interface
2381
2382
class MandosDBusServiceTransitional(MandosDBusService):
2383
__metaclass__ = AlternateDBusNamesMetaclass
2384
mandos_dbus_service = MandosDBusServiceTransitional()
2385
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2386
3492
def cleanup():
2387
3493
"Cleanup function; run on exit"
2388
service.cleanup()
2389
2390
multiprocessing.active_children()
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2391
3499
if not (tcp_server.clients or client_settings):
2392
3500
return
2393
3501
2394
3502
# Store client before exiting. Secrets are encrypted with key
2395
3503
# based on what config file has. If config file is
2396
3504
# removed/edited, old secret will thus be unrecovable.
2397
clients = []
3505
clients = {}
2398
3506
with PGPEngine() as pgp:
2399
for client in tcp_server.clients.itervalues():
3507
for client in tcp_server.clients.values():
2400
3508
key = client_settings[client.name]["secret"]
2401
3509
client.encrypted_secret = pgp.encrypt(client.secret,
2402
3510
key)
2403
3511
client_dict = {}
2404
2405
# A list of attributes that will not be stored when
2406
# shutting down.
2407
exclude = set(("bus", "changedstate", "secret"))
2408
for name, typ in (inspect.getmembers
2409
(dbus.service.Object)):
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
2410
3519
exclude.add(name)
2411
3520
2412
3521
client_dict["encrypted_secret"] = (client
2413
3522
.encrypted_secret)
2414
3523
for attr in client.client_structure:
2415
3524
if attr not in exclude:
2416
3525
client_dict[attr] = getattr(client, attr)
2417
2418
clients.append(client_dict)
3526
3527
clients[client.name] = client_dict
2419
3528
del client_settings[client.name]["secret"]
2420
3529
2421
3530
try:
2422
with os.fdopen(os.open(stored_state_path,
2423
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2424
0600), "wb") as stored_state:
2425
pickle.dump((clients, client_settings), stored_state)
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
2426
3541
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if e.errno not in (errno.ENOENT, errno.EACCES):
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2430
3553
raise
2431
3554
2432
3555
# Delete all clients, and settings from config
2433
3556
while tcp_server.clients:
2434
3557
name, client = tcp_server.clients.popitem()
2435
3558
if use_dbus:
2436
3559
client.remove_from_connection()
2437
# Don't signal anything except ClientRemoved
3560
# Don't signal the disabling
2438
3561
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
2439
3563
if use_dbus:
2440
# Emit D-Bus signal
2441
mandos_dbus_service.ClientRemoved(client
2442
.dbus_object_path,
2443
client.name)
3564
mandos_dbus_service.client_removed_signal(client)
2444
3565
client_settings.clear()
2445
3566
2446
3567
atexit.register(cleanup)
2447
2448
for client in tcp_server.clients.itervalues():
3568
3569
for client in tcp_server.clients.values():
2449
3570
if use_dbus:
2450
# Emit D-Bus signal
2451
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2452
3573
# Need to initiate checking of clients
2453
3574
if client.enabled:
2454
3575
client.init_checker()
2455
3576
2456
3577
tcp_server.enable()
2457
3578
tcp_server.server_activate()
2458
3579
2459
3580
# Find out what port we got
2460
service.port = tcp_server.socket.getsockname()[1]
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2461
3583
if use_ipv6:
2462
3584
logger.info("Now listening on address %r, port %d,"
2463
" flowinfo %d, scope_id %d"
2464
% tcp_server.socket.getsockname())
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2465
3587
else: # IPv4
2466
logger.info("Now listening on address %r, port %d"
2467
% tcp_server.socket.getsockname())
2468
2469
#service.interface = tcp_server.socket.getsockname()[3]
2470
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2471
3593
try:
2472
# From the Avahi example code
2473
try:
2474
service.activate()
2475
except dbus.exceptions.DBusException as error:
2476
logger.critical("DBusException: %s", error)
2477
cleanup()
2478
sys.exit(1)
2479
# End of Avahi example code
2480
2481
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2482
lambda *args, **kwargs:
2483
(tcp_server.handle_request
2484
(*args[2:], **kwargs) or True))
2485
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2486
3609
logger.debug("Starting main loop")
2487
3610
main_loop.run()
2488
3611
except AvahiError as error:
2489
logger.critical("AvahiError: %s", error)
3612
logger.critical("Avahi Error", exc_info=error)
2490
3613
cleanup()
2491
3614
sys.exit(1)
2492
3615
except KeyboardInterrupt:
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Version: 2.0.2.dev0