To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 237.7.671
- compare with another revision
- download diff
- download tarball
- view history from revision 237.7.671
- Committer: Teddy Hogeborn
- Date: 2019-07-25 21:42:40 UTC
- mto: This revision was merged to the branch mainline in revision 384.
- Revision ID: teddy@recompile.se-20190725214240-31i9qehf60xb8yu4
Use hexadecimal unicode character references, not decimal
* mandos-options.xml (priority): Use "​" instead of "​"
to make it slightly more clear that ZERO WIDTH SPACE is intended.
* mandos-options.xml (priority): Use "​" instead of "​"
to make it slightly more clear that ZERO WIDTH SPACE is intended.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
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 = "1.8.4"
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
131
class CryptoError(Exception):
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
132
179
pass
133
180
134
181
135
class Crypto(object):
182
class PGPEngine(object):
136
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
137
185
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
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
146
206
def __enter__(self):
147
207
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
208
209
def __exit__(self, exc_type, exc_value, traceback):
150
210
self._cleanup()
151
211
return False
152
212
153
213
def __del__(self):
154
214
self._cleanup()
155
215
156
216
def _cleanup(self):
157
217
if self.tempdir is not None:
158
218
# Delete contents of tempdir
159
219
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
220
topdown=False):
161
221
for filename in files:
162
222
os.remove(os.path.join(root, filename))
163
223
for dirname in dirs:
165
225
# Remove tempdir
166
226
os.rmdir(self.tempdir)
167
227
self.tempdir = None
168
228
169
229
def password_encode(self, password):
170
230
# Passphrase can not be empty and can not contain newlines or
171
231
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
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
174
240
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
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)
189
256
return ciphertext
190
257
191
258
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
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)
206
274
return decrypted_plaintext
207
275
208
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
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(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
209
302
210
303
class AvahiError(Exception):
211
304
def __init__(self, value, *args, **kwargs):
212
305
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
216
309
217
310
class AvahiServiceError(AvahiError):
218
311
pass
219
312
313
220
314
class AvahiGroupError(AvahiError):
221
315
pass
222
316
223
317
224
318
class AvahiService(object):
225
319
"""An Avahi (Zeroconf) service.
226
320
227
321
Attributes:
228
322
interface: integer; avahi.IF_UNSPEC or an interface index.
229
323
Used to optionally bind to the specified interface.
230
324
name: string; Example: 'Mandos'
231
325
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
326
See <https://www.iana.org/assignments/service-names-port-numbers>
233
327
port: integer; what port to announce
234
328
TXT: list of strings; TXT record for the service
235
329
domain: string; Domain to publish on, default to .local if empty.
241
335
server: D-Bus Server
242
336
bus: dbus.SystemBus()
243
337
"""
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
248
350
self.interface = interface
249
351
self.name = name
250
352
self.type = servicetype
259
361
self.server = None
260
362
self.bus = bus
261
363
self.entry_group_state_changed_match = None
262
def rename(self):
364
365
def rename(self, remove=True):
263
366
"""Derived from the Avahi example code"""
264
367
if self.rename_count >= self.max_renames:
265
368
logger.critical("No suitable Zeroconf service name found"
266
369
" after %i retries, exiting.",
267
370
self.rename_count)
268
371
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
271
375
logger.info("Changing Zeroconf service name to %r ...",
272
376
self.name)
273
self.remove()
377
if remove:
378
self.remove()
274
379
try:
275
380
self.add()
276
381
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
281
391
def remove(self):
282
392
"""Derived from the Avahi example code"""
283
393
if self.entry_group_state_changed_match is not None:
285
395
self.entry_group_state_changed_match = None
286
396
if self.group is not None:
287
397
self.group.Reset()
398
288
399
def add(self):
289
400
"""Derived from the Avahi example code"""
290
401
self.remove()
307
418
dbus.UInt16(self.port),
308
419
avahi.string_array_to_txt_array(self.TXT))
309
420
self.group.Commit()
421
310
422
def entry_group_state_changed(self, state, error):
311
423
"""Derived from the Avahi example code"""
312
424
logger.debug("Avahi entry group state change: %i", state)
313
425
314
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
427
logger.debug("Zeroconf service established.")
316
428
elif state == avahi.ENTRY_GROUP_COLLISION:
318
430
self.rename()
319
431
elif state == avahi.ENTRY_GROUP_FAILURE:
320
432
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
324
436
def cleanup(self):
325
437
"""Derived from the Avahi example code"""
326
438
if self.group is not None:
331
443
pass
332
444
self.group = None
333
445
self.remove()
446
334
447
def server_state_changed(self, state, error=None):
335
448
"""Derived from the Avahi example code"""
336
449
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
344
456
if state in bad_states:
345
457
if bad_states[state] is not None:
346
458
if error is None:
349
461
logger.error(bad_states[state] + ": %r", error)
350
462
self.cleanup()
351
463
elif state == avahi.SERVER_RUNNING:
352
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
353
476
else:
354
477
if error is None:
355
478
logger.debug("Unknown state: %r", state)
356
479
else:
357
480
logger.debug("Unknown state: %r: %r", state, error)
481
358
482
def activate(self):
359
483
"""Derived from the Avahi example code"""
360
484
if self.server is None:
364
488
follow_name_owner_changes=True),
365
489
avahi.DBUS_INTERFACE_SERVER)
366
490
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
491
self.server_state_changed)
368
492
self.server_state_changed(self.server.GetState())
369
493
494
370
495
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
496
def rename(self, *args, **kwargs):
372
497
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
378
502
return ret
379
503
380
def _timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
386
817
class Client(object):
387
818
"""A representation of a client host served by this server.
388
819
389
820
Attributes:
390
_approved: bool(); 'None' if not yet approved/disapproved
821
approved: bool(); 'None' if not yet approved/disapproved
391
822
approval_delay: datetime.timedelta(); Time to wait for approval
392
823
approval_duration: datetime.timedelta(); Duration of one approval
393
824
checker: subprocess.Popen(); a running checker process used
394
825
to see if the client lives.
395
826
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
827
checker_callback_tag: a GLib event source tag, or None
397
828
checker_command: string; External command which is run to check
398
829
if client lives. %() expansions are done at
399
830
runtime with vars(self) as dict, so that for
400
831
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
832
checker_initiator_tag: a GLib event source tag, or None
402
833
created: datetime.datetime(); (UTC) object creation
403
834
client_structure: Object describing what attributes a client has
404
835
and is used for storing the client at exit
405
836
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
837
disable_initiator_tag: a GLib event source tag, or None
407
838
enabled: bool()
408
839
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
410
843
host: string; available for use by the checker command
411
844
interval: datetime.timedelta(); How often to start a new checker
412
845
last_approval_request: datetime.datetime(); (UTC) or None
413
846
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
847
last_checker_status: integer between 0 and 255 reflecting exit
416
848
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC)
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
419
853
name: string; from the config file, used in log messages and
420
854
D-Bus identifiers
421
855
secret: bytestring; sent verbatim (over TLS) to client
422
856
timeout: datetime.timedelta(); How long from last_checked_ok
423
857
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
858
extended_timeout: extra long timeout when secret has been sent
425
859
runtime_expansions: Allowed attributes for runtime expansion.
426
860
expires: datetime.datetime(); time (UTC) when a client will be
427
861
disabled, or None
862
server_settings: The server_settings dict from main()
428
863
"""
429
864
430
865
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
433
869
"last_enabled", "name", "timeout")
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
454
937
self.name = name
455
if config is None:
456
config = {}
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
457
955
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
956
logger.debug(" Key ID: %s", self.key_id)
463
957
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = True
477
self.last_approval_request = None
478
self.last_enabled = datetime.datetime.utcnow()
479
self.last_checked_ok = None
480
self.last_checker_status = None
481
self.timeout = string_to_delta(config["timeout"])
482
self.extended_timeout = string_to_delta(config
483
["extended_timeout"])
484
self.interval = string_to_delta(config["interval"])
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
485
962
self.checker = None
486
963
self.checker_initiator_tag = None
487
964
self.disable_initiator_tag = None
488
self.expires = datetime.datetime.utcnow() + self.timeout
489
965
self.checker_callback_tag = None
490
self.checker_command = config["checker"]
491
966
self.current_checker_command = None
492
self._approved = None
493
self.approved_by_default = config.get("approved_by_default",
494
True)
967
self.approved = None
495
968
self.approvals_pending = 0
496
self.approval_delay = string_to_delta(
497
config["approval_delay"])
498
self.approval_duration = string_to_delta(
499
config["approval_duration"])
500
self.changedstate = (multiprocessing_manager
501
.Condition(multiprocessing_manager
502
.Lock()))
503
self.client_structure = [attr for attr in
504
self.__dict__.iterkeys()
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
505
973
if not attr.startswith("_")]
506
974
self.client_structure.append("client_structure")
507
508
for name, t in inspect.getmembers(type(self),
509
lambda obj:
510
isinstance(obj,
511
property)):
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
512
978
if not name.startswith("_"):
513
979
self.client_structure.append(name)
514
980
515
981
# Send notice to process children that client state has changed
516
982
def send_changedstate(self):
517
983
with self.changedstate:
518
984
self.changedstate.notify_all()
519
985
520
986
def enable(self):
521
987
"""Start this client's checker and timeout hooks"""
522
988
if getattr(self, "enabled", False):
523
989
# Already enabled
524
990
return
525
self.send_changedstate()
526
991
self.expires = datetime.datetime.utcnow() + self.timeout
527
992
self.enabled = True
528
993
self.last_enabled = datetime.datetime.utcnow()
529
994
self.init_checker()
530
995
self.send_changedstate()
996
531
997
def disable(self, quiet=True):
532
998
"""Disable this client."""
533
999
if not getattr(self, "enabled", False):
534
1000
return False
535
1001
if not quiet:
536
self.send_changedstate()
537
if not quiet:
538
1002
logger.info("Disabling client %s", self.name)
539
if getattr(self, "disable_initiator_tag", False):
540
gobject.source_remove(self.disable_initiator_tag)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
541
1005
self.disable_initiator_tag = None
542
1006
self.expires = None
543
if getattr(self, "checker_initiator_tag", False):
544
gobject.source_remove(self.checker_initiator_tag)
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
545
1009
self.checker_initiator_tag = None
546
1010
self.stop_checker()
547
1011
self.enabled = False
548
# Do not run this again if called by a gobject.timeout_add
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
549
1015
return False
550
1016
551
1017
def __del__(self):
552
1018
self.disable()
553
1019
554
1020
def init_checker(self):
555
1021
# Schedule a new checker to be started an 'interval' from now,
556
1022
# and every interval from then on.
557
self.checker_initiator_tag = (gobject.timeout_add
558
(self.interval_milliseconds(),
559
self.start_checker))
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
560
1028
# Schedule a disable() when 'timeout' has passed
561
self.disable_initiator_tag = (gobject.timeout_add
562
(self.timeout_milliseconds(),
563
self.disable))
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
564
1033
# Also start a new checker *right now*.
565
1034
self.start_checker()
566
567
def checker_callback(self, pid, condition, command):
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
568
1038
"""The checker has completed, so take appropriate actions."""
569
1039
self.checker_callback_tag = None
570
1040
self.checker = None
571
if os.WIFEXITED(condition):
572
self.last_checker_status = os.WEXITSTATUS(condition)
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
573
1048
if self.last_checker_status == 0:
574
1049
logger.info("Checker for %(name)s succeeded",
575
1050
vars(self))
576
1051
self.checked_ok()
577
1052
else:
578
logger.info("Checker for %(name)s failed",
579
vars(self))
1053
logger.info("Checker for %(name)s failed", vars(self))
580
1054
else:
581
1055
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
582
1057
logger.warning("Checker for %(name)s crashed?",
583
1058
vars(self))
584
585
def checked_ok(self, timeout=None):
586
"""Bump up the timeout for this client.
587
588
This should only be called when the client has been seen,
589
alive and well.
590
"""
1059
return False
1060
1061
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
1063
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
591
1070
if timeout is None:
592
1071
timeout = self.timeout
593
self.last_checked_ok = datetime.datetime.utcnow()
594
1072
if self.disable_initiator_tag is not None:
595
gobject.source_remove(self.disable_initiator_tag)
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
596
1075
if getattr(self, "enabled", False):
597
self.disable_initiator_tag = (gobject.timeout_add
598
(_timedelta_to_milliseconds
599
(timeout), self.disable))
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
600
1078
self.expires = datetime.datetime.utcnow() + timeout
601
1079
602
1080
def need_approval(self):
603
1081
self.last_approval_request = datetime.datetime.utcnow()
604
1082
605
1083
def start_checker(self):
606
1084
"""Start a new checker subprocess if one is not running.
607
1085
608
1086
If a checker already exists, leave it running and do
609
1087
nothing."""
610
1088
# The reason for not killing a running checker is that if we
611
# did that, then if a checker (for some reason) started
612
# running slowly and taking more than 'interval' time, the
613
# client would inevitably timeout, since no checker would get
614
# a chance to run to completion. If we instead leave running
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
615
1093
# checkers alone, the checker would have to take more time
616
1094
# than 'timeout' for the client to be disabled, which is as it
617
1095
# should be.
618
619
# If a checker exists, make sure it is not a zombie
620
try:
621
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
622
except (AttributeError, OSError) as error:
623
if (isinstance(error, OSError)
624
and error.errno != errno.ECHILD):
625
raise error
626
else:
627
if pid:
628
logger.warning("Checker was a zombie")
629
gobject.source_remove(self.checker_callback_tag)
630
self.checker_callback(pid, status,
631
self.current_checker_command)
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
632
1101
# Start a new checker if needed
633
1102
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
634
1107
try:
635
# In case checker_command has exactly one % operator
636
command = self.checker_command % self.host
637
except TypeError:
638
# Escape attributes for the shell
639
escaped_attrs = dict(
640
(attr,
641
re.escape(unicode(str(getattr(self, attr, "")),
642
errors=
643
'replace')))
644
for attr in
645
self.runtime_expansions)
646
647
try:
648
command = self.checker_command % escaped_attrs
649
except TypeError as error:
650
logger.error('Could not format string "%s":'
651
' %s', self.checker_command, error)
652
return True # Try again later
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
return True # Try again later
653
1114
self.current_checker_command = command
654
try:
655
logger.info("Starting checker %r for %s",
656
command, self.name)
657
# We don't need to redirect stdout and stderr, since
658
# in normal mode, that is already done by daemon(),
659
# and in debug mode we don't want to. (Stdin is
660
# always replaced by /dev/null.)
661
self.checker = subprocess.Popen(command,
662
close_fds=True,
663
shell=True, cwd="/")
664
self.checker_callback_tag = (gobject.child_watch_add
665
(self.checker.pid,
666
self.checker_callback,
667
data=command))
668
# The checker may have completed before the gobject
669
# watch was added. Check for this.
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
if pid:
672
gobject.source_remove(self.checker_callback_tag)
673
self.checker_callback(pid, status, command)
674
except OSError as error:
675
logger.error("Failed to start subprocess: %s",
676
error)
677
# Re-run this periodically if run by gobject.timeout_add
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
678
1141
return True
679
1142
680
1143
def stop_checker(self):
681
1144
"""Force the checker process, if any, to stop."""
682
1145
if self.checker_callback_tag:
683
gobject.source_remove(self.checker_callback_tag)
1146
GLib.source_remove(self.checker_callback_tag)
684
1147
self.checker_callback_tag = None
685
1148
if getattr(self, "checker", None) is None:
686
1149
return
687
1150
logger.debug("Stopping checker for %(name)s", vars(self))
688
try:
689
os.kill(self.checker.pid, signal.SIGTERM)
690
#time.sleep(0.5)
691
#if self.checker.poll() is None:
692
# os.kill(self.checker.pid, signal.SIGKILL)
693
except OSError as error:
694
if error.errno != errno.ESRCH: # No such process
695
raise
1151
self.checker.terminate()
696
1152
self.checker = None
697
1153
698
1154
699
def dbus_service_property(dbus_interface, signature="v",
700
access="readwrite", byte_arrays=False):
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
701
1159
"""Decorators for marking methods of a DBusObjectWithProperties to
702
1160
become properties on the D-Bus.
703
1161
704
1162
The decorated method will be called with no arguments by "Get"
705
1163
and with one argument by "Set".
706
1164
707
1165
The parameters, where they are supported, are the same as
708
1166
dbus.service.method, except there is only "signature", since the
709
1167
type from Get() and the type sent to Set() is the same.
712
1170
# "Set" method, so we fail early here:
713
1171
if byte_arrays and signature != "ay":
714
1172
raise ValueError("Byte arrays not supported for non-'ay'"
715
" signature %r" % signature)
1173
" signature {!r}".format(signature))
1174
716
1175
def decorator(func):
717
1176
func._dbus_is_property = True
718
1177
func._dbus_interface = dbus_interface
721
1180
func._dbus_name = func.__name__
722
1181
if func._dbus_name.endswith("_dbus_property"):
723
1182
func._dbus_name = func._dbus_name[:-14]
724
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
725
return func
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
726
1229
return decorator
727
1230
728
1231
729
1232
class DBusPropertyException(dbus.exceptions.DBusException):
730
1233
"""A base class for D-Bus property-related exceptions
731
1234
"""
732
def __unicode__(self):
733
return unicode(str(self))
1235
pass
734
1236
735
1237
736
1238
class DBusPropertyAccessException(DBusPropertyException):
745
1247
pass
746
1248
747
1249
748
class DBusObjectWithProperties(dbus.service.Object):
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
749
1340
"""A D-Bus object with properties.
750
1341
751
1342
Classes inheriting from this can use the dbus_service_property
752
1343
decorator to expose methods as D-Bus properties. It exposes the
753
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
754
1345
"""
755
756
@staticmethod
757
def _is_dbus_property(obj):
758
return getattr(obj, "_dbus_is_property", False)
759
760
def _get_all_dbus_properties(self):
761
"""Returns a generator of (name, attribute) pairs
762
"""
763
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
764
for cls in self.__class__.__mro__
765
for name, prop in
766
inspect.getmembers(cls, self._is_dbus_property))
767
1346
768
1347
def _get_dbus_property(self, interface_name, property_name):
769
1348
"""Returns a bound method if one exists which is a D-Bus
770
1349
property with the specified name and interface.
771
1350
"""
772
for cls in self.__class__.__mro__:
773
for name, value in (inspect.getmembers
774
(cls, self._is_dbus_property)):
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
775
1354
if (value._dbus_name == property_name
776
1355
and value._dbus_interface == interface_name):
777
1356
return value.__get__(self)
778
1357
779
1358
# No such property
780
raise DBusPropertyNotFound(self.dbus_object_path + ":"
781
+ interface_name + "."
782
+ property_name)
783
784
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
785
1373
out_signature="v")
786
1374
def Get(self, interface_name, property_name):
787
1375
"""Standard D-Bus property Get() method, see D-Bus standard.
793
1381
if not hasattr(value, "variant_level"):
794
1382
return value
795
1383
return type(value)(value, variant_level=value.variant_level+1)
796
1384
797
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
798
1386
def Set(self, interface_name, property_name, value):
799
1387
"""Standard D-Bus property Set() method, see D-Bus standard.
805
1393
# The byte_arrays option is not supported yet on
806
1394
# signatures other than "ay".
807
1395
if prop._dbus_signature != "ay":
808
raise ValueError
809
value = dbus.ByteArray(''.join(unichr(byte)
810
for byte in value))
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
for byte in value))
811
1401
prop(value)
812
813
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
814
1405
out_signature="a{sv}")
815
1406
def GetAll(self, interface_name):
816
1407
"""Standard D-Bus property GetAll() method, see D-Bus
817
1408
standard.
818
1409
819
1410
Note: Will not include properties with access="write".
820
1411
"""
821
1412
properties = {}
822
for name, prop in self._get_all_dbus_properties():
1413
for name, prop in self._get_all_dbus_things("property"):
823
1414
if (interface_name
824
1415
and interface_name != prop._dbus_interface):
825
1416
# Interface non-empty but did not match
831
1422
if not hasattr(value, "variant_level"):
832
1423
properties[name] = value
833
1424
continue
834
properties[name] = type(value)(value, variant_level=
835
value.variant_level+1)
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
836
1427
return dbus.Dictionary(properties, signature="sv")
837
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
838
1437
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
839
1438
out_signature="s",
840
1439
path_keyword='object_path',
841
1440
connection_keyword='connection')
842
1441
def Introspect(self, object_path, connection):
843
"""Standard D-Bus method, overloaded to insert property tags.
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
844
1445
"""
845
xmlstring = dbus.service.Object.Introspect(self, object_path,
846
connection)
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
847
1449
try:
848
1450
document = xml.dom.minidom.parseString(xmlstring)
1451
849
1452
def make_tag(document, name, prop):
850
1453
e = document.createElement("property")
851
1454
e.setAttribute("name", name)
852
1455
e.setAttribute("type", prop._dbus_signature)
853
1456
e.setAttribute("access", prop._dbus_access)
854
1457
return e
1458
855
1459
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
856
1461
for tag in (make_tag(document, name, prop)
857
1462
for name, prop
858
in self._get_all_dbus_properties()
1463
in self._get_all_dbus_things("property")
859
1464
if prop._dbus_interface
860
1465
== if_tag.getAttribute("name")):
861
1466
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
862
1483
# Add the names to the return values for the
863
1484
# "org.freedesktop.DBus.Properties" methods
864
1485
if (if_tag.getAttribute("name")
879
1500
except (AttributeError, xml.dom.DOMException,
880
1501
xml.parsers.expat.ExpatError) as error:
881
1502
logger.error("Failed to override Introspection method",
882
error)
883
return xmlstring
884
885
886
def datetime_to_dbus (dt, variant_level=0):
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
887
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
888
1580
if dt is None:
889
return dbus.String("", variant_level = variant_level)
890
return dbus.String(dt.isoformat(),
891
variant_level=variant_level)
892
893
894
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
895
.__metaclass__):
896
"""Applied to an empty subclass of a D-Bus object, this metaclass
897
will add additional D-Bus attributes matching a certain pattern.
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
898
1607
"""
899
def __new__(mcs, name, bases, attr):
900
# Go through all the base classes which could have D-Bus
901
# methods, signals, or properties in them
902
for base in (b for b in bases
903
if issubclass(b, dbus.service.Object)):
904
# Go though all attributes of the base class
905
for attrname, attribute in inspect.getmembers(base):
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
906
1616
# Ignore non-D-Bus attributes, and D-Bus attributes
907
1617
# with the wrong interface name
908
1618
if (not hasattr(attribute, "_dbus_interface")
909
or not attribute._dbus_interface
910
.startswith("se.recompile.Mandos")):
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
911
1621
continue
912
1622
# Create an alternate D-Bus interface name based on
913
1623
# the current name
914
alt_interface = (attribute._dbus_interface
915
.replace("se.recompile.Mandos",
916
"se.bsnet.fukt.Mandos"))
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
917
1627
# Is this a D-Bus signal?
918
1628
if getattr(attribute, "_dbus_is_signal", False):
919
# Extract the original non-method function by
920
# black magic
921
nonmethod_func = (dict(
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
922
1633
zip(attribute.func_code.co_freevars,
923
attribute.__closure__))["func"]
924
.cell_contents)
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
925
1641
# Create a new, but exactly alike, function
926
1642
# object, and decorate it to be a new D-Bus signal
927
1643
# with the alternate D-Bus interface name
928
new_function = (dbus.service.signal
929
(alt_interface,
930
attribute._dbus_signature)
931
(types.FunctionType(
932
nonmethod_func.func_code,
933
nonmethod_func.func_globals,
934
nonmethod_func.func_name,
935
nonmethod_func.func_defaults,
936
nonmethod_func.func_closure)))
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
937
1655
# Define a creator of a function to call both the
938
# old and new functions, so both the old and new
939
# signals gets sent when the function is called
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
940
1659
def fixscope(func1, func2):
941
1660
"""This function is a scope container to pass
942
1661
func1 and func2 to the "call_both" function
943
1662
outside of its arguments"""
1663
1664
@functools.wraps(func2)
944
1665
def call_both(*args, **kwargs):
945
1666
"""This function will emit two D-Bus
946
1667
signals by calling func1 and func2"""
947
1668
func1(*args, **kwargs)
948
1669
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
949
1676
return call_both
950
1677
# Create the "call_both" function and add it to
951
1678
# the class
952
attr[attrname] = fixscope(attribute,
953
new_function)
1679
attr[attrname] = fixscope(attribute, new_function)
954
1680
# Is this a D-Bus method?
955
1681
elif getattr(attribute, "_dbus_is_method", False):
956
1682
# Create a new, but exactly alike, function
957
1683
# object. Decorate it to be a new D-Bus method
958
1684
# with the alternate D-Bus interface name. Add it
959
1685
# to the class.
960
attr[attrname] = (dbus.service.method
961
(alt_interface,
962
attribute._dbus_in_signature,
963
attribute._dbus_out_signature)
964
(types.FunctionType
965
(attribute.func_code,
966
attribute.func_globals,
967
attribute.func_name,
968
attribute.func_defaults,
969
attribute.func_closure)))
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
970
1698
# Is this a D-Bus property?
971
1699
elif getattr(attribute, "_dbus_is_property", False):
972
1700
# Create a new, but exactly alike, function
973
1701
# object, and decorate it to be a new D-Bus
974
1702
# property with the alternate D-Bus interface
975
1703
# name. Add it to the class.
976
attr[attrname] = (dbus_service_property
977
(alt_interface,
978
attribute._dbus_signature,
979
attribute._dbus_access,
980
attribute
981
._dbus_get_args_options
982
["byte_arrays"])
983
(types.FunctionType
984
(attribute.func_code,
985
attribute.func_globals,
986
attribute.func_name,
987
attribute.func_defaults,
988
attribute.func_closure)))
989
return type.__new__(mcs, name, bases, attr)
990
991
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
992
1756
class ClientDBus(Client, DBusObjectWithProperties):
993
1757
"""A Client class using D-Bus
994
1758
995
1759
Attributes:
996
1760
dbus_object_path: dbus.ObjectPath
997
1761
bus: dbus.SystemBus()
998
1762
"""
999
1763
1000
1764
runtime_expansions = (Client.runtime_expansions
1001
+ ("dbus_object_path",))
1002
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1003
1769
# dbus.service.Object doesn't use super(), so we can't either.
1004
1005
def __init__(self, bus = None, *args, **kwargs):
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1006
1772
self.bus = bus
1007
1773
Client.__init__(self, *args, **kwargs)
1008
1009
self._approvals_pending = 0
1010
1774
# Only now, when this client is initialized, can it show up on
1011
1775
# the D-Bus
1012
client_object_name = unicode(self.name).translate(
1776
client_object_name = str(self.name).translate(
1013
1777
{ord("."): ord("_"),
1014
1778
ord("-"): ord("_")})
1015
self.dbus_object_path = (dbus.ObjectPath
1016
("/clients/" + client_object_name))
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1017
1781
DBusObjectWithProperties.__init__(self, self.bus,
1018
1782
self.dbus_object_path)
1019
1020
def notifychangeproperty(transform_func,
1021
dbus_name, type_func=lambda x: x,
1022
variant_level=1):
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
1023
1789
""" Modify a variable so that it's a property which announces
1024
1790
its changes to DBus.
1025
1791
1026
1792
transform_fun: Function that takes a value and a variant_level
1027
1793
and transforms it to a D-Bus type.
1028
1794
dbus_name: D-Bus name of the variable
1030
1796
to the D-Bus. Default: no transform
1031
1797
variant_level: D-Bus variant level. Default: 1
1032
1798
"""
1033
attrname = "_{0}".format(dbus_name)
1799
attrname = "_{}".format(dbus_name)
1800
1034
1801
def setter(self, value):
1035
1802
if hasattr(self, "dbus_object_path"):
1036
1803
if (not hasattr(self, attrname) or
1037
1804
type_func(getattr(self, attrname, None))
1038
1805
!= type_func(value)):
1039
dbus_value = transform_func(type_func(value),
1040
variant_level
1041
=variant_level)
1042
self.PropertyChanged(dbus.String(dbus_name),
1043
dbus_value)
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
1044
1821
setattr(self, attrname, value)
1045
1822
1046
1823
return property(lambda self: getattr(self, attrname), setter)
1047
1048
1824
1049
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1050
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1051
1827
"ApprovalPending",
1052
type_func = bool)
1828
type_func=bool)
1053
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1054
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1055
1831
"LastEnabled")
1056
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1057
type_func = lambda checker:
1058
checker is not None)
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1059
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1060
1836
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1061
1839
last_approval_request = notifychangeproperty(
1062
1840
datetime_to_dbus, "LastApprovalRequest")
1063
1841
approved_by_default = notifychangeproperty(dbus.Boolean,
1064
1842
"ApprovedByDefault")
1065
approval_delay = notifychangeproperty(dbus.UInt16,
1066
"ApprovalDelay",
1067
type_func =
1068
_timedelta_to_milliseconds)
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1069
1846
approval_duration = notifychangeproperty(
1070
dbus.UInt16, "ApprovalDuration",
1071
type_func = _timedelta_to_milliseconds)
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1072
1849
host = notifychangeproperty(dbus.String, "Host")
1073
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1074
type_func =
1075
_timedelta_to_milliseconds)
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1076
1853
extended_timeout = notifychangeproperty(
1077
dbus.UInt16, "ExtendedTimeout",
1078
type_func = _timedelta_to_milliseconds)
1079
interval = notifychangeproperty(dbus.UInt16,
1080
"Interval",
1081
type_func =
1082
_timedelta_to_milliseconds)
1854
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1083
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1084
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1085
1863
del notifychangeproperty
1086
1864
1087
1865
def __del__(self, *args, **kwargs):
1088
1866
try:
1089
1867
self.remove_from_connection()
1092
1870
if hasattr(DBusObjectWithProperties, "__del__"):
1093
1871
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1094
1872
Client.__del__(self, *args, **kwargs)
1095
1096
def checker_callback(self, pid, condition, command,
1097
*args, **kwargs):
1098
self.checker_callback_tag = None
1099
self.checker = None
1100
if os.WIFEXITED(condition):
1101
exitstatus = os.WEXITSTATUS(condition)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1102
1881
# Emit D-Bus signal
1103
1882
self.CheckerCompleted(dbus.Int16(exitstatus),
1104
dbus.Int64(condition),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1105
1885
dbus.String(command))
1106
1886
else:
1107
1887
# Emit D-Bus signal
1108
1888
self.CheckerCompleted(dbus.Int16(-1),
1109
dbus.Int64(condition),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1110
1893
dbus.String(command))
1111
1112
return Client.checker_callback(self, pid, condition, command,
1113
*args, **kwargs)
1114
1894
return ret
1895
1115
1896
def start_checker(self, *args, **kwargs):
1116
old_checker = self.checker
1117
if self.checker is not None:
1118
old_checker_pid = self.checker.pid
1119
else:
1120
old_checker_pid = None
1897
old_checker_pid = getattr(self.checker, "pid", None)
1121
1898
r = Client.start_checker(self, *args, **kwargs)
1122
1899
# Only if new checker process was started
1123
1900
if (self.checker is not None
1125
1902
# Emit D-Bus signal
1126
1903
self.CheckerStarted(self.current_checker_command)
1127
1904
return r
1128
1905
1129
1906
def _reset_approved(self):
1130
self._approved = None
1907
self.approved = None
1131
1908
return False
1132
1909
1133
1910
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1134
1914
self.send_changedstate()
1135
self._approved = value
1136
gobject.timeout_add(_timedelta_to_milliseconds
1137
(self.approval_duration),
1138
self._reset_approved)
1139
1140
1141
## D-Bus methods, signals & properties
1142
_interface = "se.recompile.Mandos.Client"
1143
1144
## Signals
1145
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1146
1922
# CheckerCompleted - signal
1147
1923
@dbus.service.signal(_interface, signature="nxs")
1148
1924
def CheckerCompleted(self, exitcode, waitstatus, command):
1149
1925
"D-Bus signal"
1150
1926
pass
1151
1927
1152
1928
# CheckerStarted - signal
1153
1929
@dbus.service.signal(_interface, signature="s")
1154
1930
def CheckerStarted(self, command):
1155
1931
"D-Bus signal"
1156
1932
pass
1157
1933
1158
1934
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1159
1936
@dbus.service.signal(_interface, signature="sv")
1160
1937
def PropertyChanged(self, property, value):
1161
1938
"D-Bus signal"
1162
1939
pass
1163
1940
1164
1941
# GotSecret - signal
1165
1942
@dbus.service.signal(_interface)
1166
1943
def GotSecret(self):
1169
1946
server to mandos-client
1170
1947
"""
1171
1948
pass
1172
1949
1173
1950
# Rejected - signal
1174
1951
@dbus.service.signal(_interface, signature="s")
1175
1952
def Rejected(self, reason):
1176
1953
"D-Bus signal"
1177
1954
pass
1178
1955
1179
1956
# NeedApproval - signal
1180
1957
@dbus.service.signal(_interface, signature="tb")
1181
1958
def NeedApproval(self, timeout, default):
1182
1959
"D-Bus signal"
1183
1960
return self.need_approval()
1184
1185
# NeRwequest - signal
1186
@dbus.service.signal(_interface, signature="s")
1187
def NewRequest(self, ip):
1188
"""D-Bus signal
1189
Is sent after a client request a password.
1190
"""
1191
pass
1192
1193
## Methods
1194
1961
1962
# Methods
1963
1195
1964
# Approve - method
1196
1965
@dbus.service.method(_interface, in_signature="b")
1197
1966
def Approve(self, value):
1198
1967
self.approve(value)
1199
1968
1200
1969
# CheckedOK - method
1201
1970
@dbus.service.method(_interface)
1202
1971
def CheckedOK(self):
1203
1972
self.checked_ok()
1204
1973
1205
1974
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1206
1976
@dbus.service.method(_interface)
1207
1977
def Enable(self):
1208
1978
"D-Bus method"
1209
1979
self.enable()
1210
1980
1211
1981
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1212
1983
@dbus.service.method(_interface)
1213
1984
def StartChecker(self):
1214
1985
"D-Bus method"
1215
1986
self.start_checker()
1216
1987
1217
1988
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1218
1990
@dbus.service.method(_interface)
1219
1991
def Disable(self):
1220
1992
"D-Bus method"
1221
1993
self.disable()
1222
1994
1223
1995
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1224
1997
@dbus.service.method(_interface)
1225
1998
def StopChecker(self):
1226
1999
self.stop_checker()
1227
1228
## Properties
1229
2000
2001
# Properties
2002
1230
2003
# ApprovalPending - property
1231
2004
@dbus_service_property(_interface, signature="b", access="read")
1232
2005
def ApprovalPending_dbus_property(self):
1233
2006
return dbus.Boolean(bool(self.approvals_pending))
1234
2007
1235
2008
# ApprovedByDefault - property
1236
@dbus_service_property(_interface, signature="b",
2009
@dbus_service_property(_interface,
2010
signature="b",
1237
2011
access="readwrite")
1238
2012
def ApprovedByDefault_dbus_property(self, value=None):
1239
2013
if value is None: # get
1240
2014
return dbus.Boolean(self.approved_by_default)
1241
2015
self.approved_by_default = bool(value)
1242
2016
1243
2017
# ApprovalDelay - property
1244
@dbus_service_property(_interface, signature="t",
2018
@dbus_service_property(_interface,
2019
signature="t",
1245
2020
access="readwrite")
1246
2021
def ApprovalDelay_dbus_property(self, value=None):
1247
2022
if value is None: # get
1248
return dbus.UInt64(self.approval_delay_milliseconds())
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1249
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1250
2026
1251
2027
# ApprovalDuration - property
1252
@dbus_service_property(_interface, signature="t",
2028
@dbus_service_property(_interface,
2029
signature="t",
1253
2030
access="readwrite")
1254
2031
def ApprovalDuration_dbus_property(self, value=None):
1255
2032
if value is None: # get
1256
return dbus.UInt64(_timedelta_to_milliseconds(
1257
self.approval_duration))
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1258
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1259
2036
1260
2037
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1261
2040
@dbus_service_property(_interface, signature="s", access="read")
1262
2041
def Name_dbus_property(self):
1263
2042
return dbus.String(self.name)
1264
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1265
2051
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1266
2054
@dbus_service_property(_interface, signature="s", access="read")
1267
2055
def Fingerprint_dbus_property(self):
1268
2056
return dbus.String(self.fingerprint)
1269
2057
1270
2058
# Host - property
1271
@dbus_service_property(_interface, signature="s",
2059
@dbus_service_property(_interface,
2060
signature="s",
1272
2061
access="readwrite")
1273
2062
def Host_dbus_property(self, value=None):
1274
2063
if value is None: # get
1275
2064
return dbus.String(self.host)
1276
self.host = value
1277
2065
self.host = str(value)
2066
1278
2067
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1279
2070
@dbus_service_property(_interface, signature="s", access="read")
1280
2071
def Created_dbus_property(self):
1281
return dbus.String(datetime_to_dbus(self.created))
1282
2072
return datetime_to_dbus(self.created)
2073
1283
2074
# LastEnabled - property
1284
2075
@dbus_service_property(_interface, signature="s", access="read")
1285
2076
def LastEnabled_dbus_property(self):
1286
2077
return datetime_to_dbus(self.last_enabled)
1287
2078
1288
2079
# Enabled - property
1289
@dbus_service_property(_interface, signature="b",
2080
@dbus_service_property(_interface,
2081
signature="b",
1290
2082
access="readwrite")
1291
2083
def Enabled_dbus_property(self, value=None):
1292
2084
if value is None: # get
1295
2087
self.enable()
1296
2088
else:
1297
2089
self.disable()
1298
2090
1299
2091
# LastCheckedOK - property
1300
@dbus_service_property(_interface, signature="s",
2092
@dbus_service_property(_interface,
2093
signature="s",
1301
2094
access="readwrite")
1302
2095
def LastCheckedOK_dbus_property(self, value=None):
1303
2096
if value is not None:
1304
2097
self.checked_ok()
1305
2098
return
1306
2099
return datetime_to_dbus(self.last_checked_ok)
1307
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
1308
2106
# Expires - property
1309
2107
@dbus_service_property(_interface, signature="s", access="read")
1310
2108
def Expires_dbus_property(self):
1311
2109
return datetime_to_dbus(self.expires)
1312
2110
1313
2111
# LastApprovalRequest - property
1314
2112
@dbus_service_property(_interface, signature="s", access="read")
1315
2113
def LastApprovalRequest_dbus_property(self):
1316
2114
return datetime_to_dbus(self.last_approval_request)
1317
2115
1318
2116
# Timeout - property
1319
@dbus_service_property(_interface, signature="t",
2117
@dbus_service_property(_interface,
2118
signature="t",
1320
2119
access="readwrite")
1321
2120
def Timeout_dbus_property(self, value=None):
1322
2121
if value is None: # get
1323
return dbus.UInt64(self.timeout_milliseconds())
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1324
2124
self.timeout = datetime.timedelta(0, 0, 0, value)
1325
if getattr(self, "disable_initiator_tag", None) is None:
1326
return
1327
# Reschedule timeout
1328
gobject.source_remove(self.disable_initiator_tag)
1329
self.disable_initiator_tag = None
1330
self.expires = None
1331
time_to_die = _timedelta_to_milliseconds((self
1332
.last_checked_ok
1333
+ self.timeout)
1334
- datetime.datetime
1335
.utcnow())
1336
if time_to_die <= 0:
1337
# The timeout has passed
1338
self.disable()
1339
else:
1340
self.expires = (datetime.datetime.utcnow()
1341
+ datetime.timedelta(milliseconds =
1342
time_to_die))
1343
self.disable_initiator_tag = (gobject.timeout_add
1344
(time_to_die, self.disable))
1345
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1346
2141
# ExtendedTimeout - property
1347
@dbus_service_property(_interface, signature="t",
2142
@dbus_service_property(_interface,
2143
signature="t",
1348
2144
access="readwrite")
1349
2145
def ExtendedTimeout_dbus_property(self, value=None):
1350
2146
if value is None: # get
1351
return dbus.UInt64(self.extended_timeout_milliseconds())
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1352
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1353
2150
1354
2151
# Interval - property
1355
@dbus_service_property(_interface, signature="t",
2152
@dbus_service_property(_interface,
2153
signature="t",
1356
2154
access="readwrite")
1357
2155
def Interval_dbus_property(self, value=None):
1358
2156
if value is None: # get
1359
return dbus.UInt64(self.interval_milliseconds())
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1360
2158
self.interval = datetime.timedelta(0, 0, 0, value)
1361
2159
if getattr(self, "checker_initiator_tag", None) is None:
1362
2160
return
1363
# Reschedule checker run
1364
gobject.source_remove(self.checker_initiator_tag)
1365
self.checker_initiator_tag = (gobject.timeout_add
1366
(value, self.start_checker))
1367
self.start_checker() # Start one now, too
1368
2161
if self.enabled:
2162
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1369
2168
# Checker - property
1370
@dbus_service_property(_interface, signature="s",
2169
@dbus_service_property(_interface,
2170
signature="s",
1371
2171
access="readwrite")
1372
2172
def Checker_dbus_property(self, value=None):
1373
2173
if value is None: # get
1374
2174
return dbus.String(self.checker_command)
1375
self.checker_command = value
1376
2175
self.checker_command = str(value)
2176
1377
2177
# CheckerRunning - property
1378
@dbus_service_property(_interface, signature="b",
2178
@dbus_service_property(_interface,
2179
signature="b",
1379
2180
access="readwrite")
1380
2181
def CheckerRunning_dbus_property(self, value=None):
1381
2182
if value is None: # get
1384
2185
self.start_checker()
1385
2186
else:
1386
2187
self.stop_checker()
1387
2188
1388
2189
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
1389
2193
@dbus_service_property(_interface, signature="o", access="read")
1390
2194
def ObjectPath_dbus_property(self):
1391
return self.dbus_object_path # is already a dbus.ObjectPath
1392
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1393
2197
# Secret = property
1394
@dbus_service_property(_interface, signature="ay",
1395
access="write", byte_arrays=True)
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1396
2205
def Secret_dbus_property(self, value):
1397
self.secret = str(value)
1398
2206
self.secret = bytes(value)
2207
1399
2208
del _interface
1400
2209
1401
2210
1402
2211
class ProxyClient(object):
1403
def __init__(self, child_pipe, fpr, address):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1404
2213
self._pipe = child_pipe
1405
self._pipe.send(('init', fpr, address))
2214
self._pipe.send(('init', key_id, fpr, address))
1406
2215
if not self._pipe.recv():
1407
raise KeyError()
1408
2216
raise KeyError(key_id or fpr)
2217
1409
2218
def __getattribute__(self, name):
1410
if(name == '_pipe'):
2219
if name == '_pipe':
1411
2220
return super(ProxyClient, self).__getattribute__(name)
1412
2221
self._pipe.send(('getattr', name))
1413
2222
data = self._pipe.recv()
1414
2223
if data[0] == 'data':
1415
2224
return data[1]
1416
2225
if data[0] == 'function':
2226
1417
2227
def func(*args, **kwargs):
1418
2228
self._pipe.send(('funcall', name, args, kwargs))
1419
2229
return self._pipe.recv()[1]
2230
1420
2231
return func
1421
2232
1422
2233
def __setattr__(self, name, value):
1423
if(name == '_pipe'):
2234
if name == '_pipe':
1424
2235
return super(ProxyClient, self).__setattr__(name, value)
1425
2236
self._pipe.send(('setattr', name, value))
1426
2237
1427
2238
1428
class ClientDBusTransitional(ClientDBus):
1429
__metaclass__ = AlternateDBusNamesMetaclass
1430
1431
1432
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1433
2240
"""A class to handle client connections.
1434
2241
1435
2242
Instantiated once for each connection to handle it.
1436
2243
Note: This will run in its own forked process."""
1437
2244
1438
2245
def handle(self):
1439
2246
with contextlib.closing(self.server.child_pipe) as child_pipe:
1440
2247
logger.info("TCP connection from: %s",
1441
unicode(self.client_address))
2248
str(self.client_address))
1442
2249
logger.debug("Pipe FD: %d",
1443
2250
self.server.child_pipe.fileno())
1444
1445
session = (gnutls.connection
1446
.ClientSession(self.request,
1447
gnutls.connection
1448
.X509Credentials()))
1449
1450
# Note: gnutls.connection.X509Credentials is really a
1451
# generic GnuTLS certificate credentials object so long as
1452
# no X.509 keys are added to it. Therefore, we can use it
1453
# here despite using OpenPGP certificates.
1454
1455
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1456
# "+AES-256-CBC", "+SHA1",
1457
# "+COMP-NULL", "+CTYPE-OPENPGP",
1458
# "+DHE-DSS"))
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1459
2258
# Use a fallback default, since this MUST be set.
1460
2259
priority = self.server.gnutls_priority
1461
2260
if priority is None:
1462
2261
priority = "NORMAL"
1463
(gnutls.library.functions
1464
.gnutls_priority_set_direct(session._c_object,
1465
priority, None))
1466
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1467
2266
# Start communication using the Mandos protocol
1468
2267
# Get protocol number
1469
2268
line = self.request.makefile().readline()
1470
2269
logger.debug("Protocol version: %r", line)
1471
2270
try:
1472
2271
if int(line.strip().split()[0]) > 1:
1473
raise RuntimeError
2272
raise RuntimeError(line)
1474
2273
except (ValueError, IndexError, RuntimeError) as error:
1475
2274
logger.error("Unknown protocol version: %s", error)
1476
2275
return
1477
2276
1478
2277
# Start GnuTLS connection
1479
2278
try:
1480
2279
session.handshake()
1481
except gnutls.errors.GNUTLSError as error:
2280
except gnutls.Error as error:
1482
2281
logger.warning("Handshake failed: %s", error)
1483
2282
# Do not run session.bye() here: the session is not
1484
2283
# established. Just abandon the request.
1485
2284
return
1486
2285
logger.debug("Handshake succeeded")
1487
2286
1488
2287
approval_required = False
1489
2288
try:
1490
try:
1491
fpr = self.fingerprint(self.peer_certificate
1492
(session))
1493
except (TypeError,
1494
gnutls.errors.GNUTLSError) as error:
1495
logger.warning("Bad certificate: %s", error)
1496
return
1497
logger.debug("Fingerprint: %s", fpr)
1498
if self.server.use_dbus:
1499
# Emit D-Bus signal
1500
client.NewRequest(str(self.client_address))
1501
1502
try:
1503
client = ProxyClient(child_pipe, fpr,
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1504
2311
self.client_address)
1505
2312
except KeyError:
1506
2313
return
1507
2314
1508
2315
if client.approval_delay:
1509
2316
delay = client.approval_delay
1510
2317
client.approvals_pending += 1
1511
2318
approval_required = True
1512
2319
1513
2320
while True:
1514
2321
if not client.enabled:
1515
2322
logger.info("Client %s is disabled",
1516
client.name)
2323
client.name)
1517
2324
if self.server.use_dbus:
1518
2325
# Emit D-Bus signal
1519
2326
client.Rejected("Disabled")
1520
2327
return
1521
1522
if client._approved or not client.approval_delay:
1523
#We are approved or approval is disabled
2328
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1524
2331
break
1525
elif client._approved is None:
2332
elif client.approved is None:
1526
2333
logger.info("Client %s needs approval",
1527
2334
client.name)
1528
2335
if self.server.use_dbus:
1529
2336
# Emit D-Bus signal
1530
2337
client.NeedApproval(
1531
client.approval_delay_milliseconds(),
1532
client.approved_by_default)
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1533
2340
else:
1534
2341
logger.warning("Client %s was not approved",
1535
2342
client.name)
1537
2344
# Emit D-Bus signal
1538
2345
client.Rejected("Denied")
1539
2346
return
1540
1541
#wait until timeout or approved
2347
2348
# wait until timeout or approved
1542
2349
time = datetime.datetime.now()
1543
2350
client.changedstate.acquire()
1544
(client.changedstate.wait
1545
(float(client._timedelta_to_milliseconds(delay)
1546
/ 1000)))
2351
client.changedstate.wait(delay.total_seconds())
1547
2352
client.changedstate.release()
1548
2353
time2 = datetime.datetime.now()
1549
2354
if (time2 - time) >= delay:
1559
2364
break
1560
2365
else:
1561
2366
delay -= time2 - time
1562
1563
sent_size = 0
1564
while sent_size < len(client.secret):
1565
try:
1566
sent = session.send(client.secret[sent_size:])
1567
except gnutls.errors.GNUTLSError as error:
1568
logger.warning("gnutls send failed")
1569
return
1570
logger.debug("Sent: %d, remaining: %d",
1571
sent, len(client.secret)
1572
- (sent_size + sent))
1573
sent_size += sent
1574
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1575
2375
logger.info("Sending secret to %s", client.name)
1576
2376
# bump the timeout using extended_timeout
1577
client.checked_ok(client.extended_timeout)
2377
client.bump_timeout(client.extended_timeout)
1578
2378
if self.server.use_dbus:
1579
2379
# Emit D-Bus signal
1580
2380
client.GotSecret()
1581
2381
1582
2382
finally:
1583
2383
if approval_required:
1584
2384
client.approvals_pending -= 1
1585
2385
try:
1586
2386
session.bye()
1587
except gnutls.errors.GNUTLSError as error:
1588
logger.warning("GnuTLS bye failed")
1589
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1590
2391
@staticmethod
1591
2392
def peer_certificate(session):
1592
"Return the peer's OpenPGP certificate as a bytestring"
1593
# If not an OpenPGP certificate...
1594
if (gnutls.library.functions
1595
.gnutls_certificate_type_get(session._c_object)
1596
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1597
# ...do the normal thing
1598
return session.peer_certificate
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1599
2409
list_size = ctypes.c_uint(1)
1600
cert_list = (gnutls.library.functions
1601
.gnutls_certificate_get_peers
2410
cert_list = (gnutls.certificate_get_peers
1602
2411
(session._c_object, ctypes.byref(list_size)))
1603
2412
if not bool(cert_list) and list_size.value != 0:
1604
raise gnutls.errors.GNUTLSError("error getting peer"
1605
" certificate")
2413
raise gnutls.Error("error getting peer certificate")
1606
2414
if list_size.value == 0:
1607
2415
return None
1608
2416
cert = cert_list[0]
1609
2417
return ctypes.string_at(cert.data, cert.size)
1610
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1611
2453
@staticmethod
1612
2454
def fingerprint(openpgp):
1613
2455
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1614
2456
# New GnuTLS "datum" with the OpenPGP public key
1615
datum = (gnutls.library.types
1616
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1617
ctypes.POINTER
1618
(ctypes.c_ubyte)),
1619
ctypes.c_uint(len(openpgp))))
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1620
2461
# New empty GnuTLS certificate
1621
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1622
(gnutls.library.functions
1623
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1624
2464
# Import the OpenPGP public key into the certificate
1625
(gnutls.library.functions
1626
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1627
gnutls.library.constants
1628
.GNUTLS_OPENPGP_FMT_RAW))
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1629
2467
# Verify the self signature in the key
1630
2468
crtverify = ctypes.c_uint()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_verify_self(crt, 0,
1633
ctypes.byref(crtverify)))
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1634
2471
if crtverify.value != 0:
1635
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1636
raise (gnutls.errors.CertificateSecurityError
1637
("Verify failed"))
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1638
2475
# New buffer for the fingerprint
1639
2476
buf = ctypes.create_string_buffer(20)
1640
2477
buf_len = ctypes.c_size_t()
1641
2478
# Get the fingerprint from the certificate into the buffer
1642
(gnutls.library.functions
1643
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1644
ctypes.byref(buf_len)))
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1645
2481
# Deinit the certificate
1646
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2482
gnutls.openpgp_crt_deinit(crt)
1647
2483
# Convert the buffer to a Python bytestring
1648
2484
fpr = ctypes.string_at(buf, buf_len.value)
1649
2485
# Convert the bytestring to hexadecimal notation
1653
2489
1654
2490
class MultiprocessingMixIn(object):
1655
2491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
1656
2493
def sub_process_main(self, request, address):
1657
2494
try:
1658
2495
self.finish_request(request, address)
1659
except:
2496
except Exception:
1660
2497
self.handle_error(request, address)
1661
2498
self.close_request(request)
1662
2499
1663
2500
def process_request(self, request, address):
1664
2501
"""Start a new process to process the request."""
1665
proc = multiprocessing.Process(target = self.sub_process_main,
1666
args = (request,
1667
address))
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1668
2504
proc.start()
1669
2505
return proc
1670
2506
1671
2507
1672
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1673
2509
""" adds a pipe to the MixIn """
2510
1674
2511
def process_request(self, request, client_address):
1675
2512
"""Overrides and wraps the original process_request().
1676
2513
1677
2514
This function creates a new pipe in self.pipe
1678
2515
"""
1679
2516
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1680
2517
1681
2518
proc = MultiprocessingMixIn.process_request(self, request,
1682
2519
client_address)
1683
2520
self.child_pipe.close()
1684
2521
self.add_pipe(parent_pipe, proc)
1685
2522
1686
2523
def add_pipe(self, parent_pipe, proc):
1687
2524
"""Dummy function; override as necessary"""
1688
raise NotImplementedError
2525
raise NotImplementedError()
1689
2526
1690
2527
1691
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1692
2529
socketserver.TCPServer, object):
1693
2530
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1694
2531
1695
2532
Attributes:
1696
2533
enabled: Boolean; whether this server is activated yet
1697
2534
interface: None or a network interface name (string)
1698
2535
use_ipv6: Boolean; to use IPv6 or not
1699
2536
"""
2537
1700
2538
def __init__(self, server_address, RequestHandlerClass,
1701
interface=None, use_ipv6=True):
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1702
2545
self.interface = interface
1703
2546
if use_ipv6:
1704
2547
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
1705
2575
socketserver.TCPServer.__init__(self, server_address,
1706
2576
RequestHandlerClass)
2577
1707
2578
def server_bind(self):
1708
2579
"""This overrides the normal server_bind() function
1709
2580
to bind to an interface if one was specified, and also NOT to
1710
2581
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
1711
2583
if self.interface is not None:
1712
2584
if SO_BINDTODEVICE is None:
1713
logger.error("SO_BINDTODEVICE does not exist;"
1714
" cannot bind to interface %s",
1715
self.interface)
1716
else:
1717
try:
1718
self.socket.setsockopt(socket.SOL_SOCKET,
1719
SO_BINDTODEVICE,
1720
str(self.interface
1721
+ '\0'))
1722
except socket.error as error:
1723
if error[0] == errno.EPERM:
1724
logger.error("No permission to"
1725
" bind to interface %s",
1726
self.interface)
1727
elif error[0] == errno.ENOPROTOOPT:
1728
logger.error("SO_BINDTODEVICE not available;"
1729
" cannot bind to interface %s",
1730
self.interface)
1731
else:
1732
raise
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1733
2606
# Only bind(2) the socket if we really need to.
1734
2607
if self.server_address[0] or self.server_address[1]:
2608
if self.server_address[1]:
2609
self.allow_reuse_address = True
1735
2610
if not self.server_address[0]:
1736
2611
if self.address_family == socket.AF_INET6:
1737
any_address = "::" # in6addr_any
2612
any_address = "::" # in6addr_any
1738
2613
else:
1739
any_address = socket.INADDR_ANY
2614
any_address = "0.0.0.0" # INADDR_ANY
1740
2615
self.server_address = (any_address,
1741
2616
self.server_address[1])
1742
2617
elif not self.server_address[1]:
1743
self.server_address = (self.server_address[0],
1744
0)
2618
self.server_address = (self.server_address[0], 0)
1745
2619
# if self.interface:
1746
2620
# self.server_address = (self.server_address[0],
1747
2621
# 0, # port
1753
2627
1754
2628
class MandosServer(IPv6_TCPServer):
1755
2629
"""Mandos server.
1756
2630
1757
2631
Attributes:
1758
2632
clients: set of Client objects
1759
2633
gnutls_priority GnuTLS priority string
1760
2634
use_dbus: Boolean; to emit D-Bus signals or not
1761
1762
Assumes a gobject.MainLoop event loop.
2635
2636
Assumes a GLib.MainLoop event loop.
1763
2637
"""
2638
1764
2639
def __init__(self, server_address, RequestHandlerClass,
1765
interface=None, use_ipv6=True, clients=None,
1766
gnutls_priority=None, use_dbus=True):
2640
interface=None,
2641
use_ipv6=True,
2642
clients=None,
2643
gnutls_priority=None,
2644
use_dbus=True,
2645
socketfd=None):
1767
2646
self.enabled = False
1768
2647
self.clients = clients
1769
2648
if self.clients is None:
1772
2651
self.gnutls_priority = gnutls_priority
1773
2652
IPv6_TCPServer.__init__(self, server_address,
1774
2653
RequestHandlerClass,
1775
interface = interface,
1776
use_ipv6 = use_ipv6)
2654
interface=interface,
2655
use_ipv6=use_ipv6,
2656
socketfd=socketfd)
2657
1777
2658
def server_activate(self):
1778
2659
if self.enabled:
1779
2660
return socketserver.TCPServer.server_activate(self)
1780
2661
1781
2662
def enable(self):
1782
2663
self.enabled = True
1783
2664
1784
2665
def add_pipe(self, parent_pipe, proc):
1785
2666
# Call "handle_ipc" for both data and EOF events
1786
gobject.io_add_watch(parent_pipe.fileno(),
1787
gobject.IO_IN | gobject.IO_HUP,
1788
functools.partial(self.handle_ipc,
1789
parent_pipe =
1790
parent_pipe,
1791
proc = proc))
1792
1793
def handle_ipc(self, source, condition, parent_pipe=None,
1794
proc = None, client_object=None):
1795
condition_names = {
1796
gobject.IO_IN: "IN", # There is data to read.
1797
gobject.IO_OUT: "OUT", # Data can be written (without
1798
# blocking).
1799
gobject.IO_PRI: "PRI", # There is urgent data to read.
1800
gobject.IO_ERR: "ERR", # Error condition.
1801
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1802
# broken, usually for pipes and
1803
# sockets).
1804
}
1805
conditions_string = ' | '.join(name
1806
for cond, name in
1807
condition_names.iteritems()
1808
if cond & condition)
2667
GLib.io_add_watch(
2668
parent_pipe.fileno(),
2669
GLib.IO_IN | GLib.IO_HUP,
2670
functools.partial(self.handle_ipc,
2671
parent_pipe=parent_pipe,
2672
proc=proc))
2673
2674
def handle_ipc(self, source, condition,
2675
parent_pipe=None,
2676
proc=None,
2677
client_object=None):
1809
2678
# error, or the other end of multiprocessing.Pipe has closed
1810
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2679
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1811
2680
# Wait for other process to exit
1812
2681
proc.join()
1813
2682
return False
1814
2683
1815
2684
# Read a request from the child
1816
2685
request = parent_pipe.recv()
1817
2686
command = request[0]
1818
2687
1819
2688
if command == 'init':
1820
fpr = request[1]
1821
address = request[2]
1822
1823
for c in self.clients.itervalues():
1824
if c.fingerprint == fpr:
2689
key_id = request[1].decode("ascii")
2690
fpr = request[2].decode("ascii")
2691
address = request[3]
2692
2693
for c in self.clients.values():
2694
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2695
continue
2696
if key_id and c.key_id == key_id:
2697
client = c
2698
break
2699
if fpr and c.fingerprint == fpr:
1825
2700
client = c
1826
2701
break
1827
2702
else:
1828
logger.info("Client not found for fingerprint: %s, ad"
1829
"dress: %s", fpr, address)
2703
logger.info("Client not found for key ID: %s, address"
2704
": %s", key_id or fpr, address)
1830
2705
if self.use_dbus:
1831
2706
# Emit D-Bus signal
1832
mandos_dbus_service.ClientNotFound(fpr,
2707
mandos_dbus_service.ClientNotFound(key_id or fpr,
1833
2708
address[0])
1834
2709
parent_pipe.send(False)
1835
2710
return False
1836
1837
gobject.io_add_watch(parent_pipe.fileno(),
1838
gobject.IO_IN | gobject.IO_HUP,
1839
functools.partial(self.handle_ipc,
1840
parent_pipe =
1841
parent_pipe,
1842
proc = proc,
1843
client_object =
1844
client))
2711
2712
GLib.io_add_watch(
2713
parent_pipe.fileno(),
2714
GLib.IO_IN | GLib.IO_HUP,
2715
functools.partial(self.handle_ipc,
2716
parent_pipe=parent_pipe,
2717
proc=proc,
2718
client_object=client))
1845
2719
parent_pipe.send(True)
1846
2720
# remove the old hook in favor of the new above hook on
1847
2721
# same fileno
1850
2724
funcname = request[1]
1851
2725
args = request[2]
1852
2726
kwargs = request[3]
1853
2727
1854
2728
parent_pipe.send(('data', getattr(client_object,
1855
2729
funcname)(*args,
1856
**kwargs)))
1857
2730
**kwargs)))
2731
1858
2732
if command == 'getattr':
1859
2733
attrname = request[1]
1860
if callable(client_object.__getattribute__(attrname)):
1861
parent_pipe.send(('function',))
2734
if isinstance(client_object.__getattribute__(attrname),
2735
collections.Callable):
2736
parent_pipe.send(('function', ))
1862
2737
else:
1863
parent_pipe.send(('data', client_object
1864
.__getattribute__(attrname)))
1865
2738
parent_pipe.send((
2739
'data', client_object.__getattribute__(attrname)))
2740
1866
2741
if command == 'setattr':
1867
2742
attrname = request[1]
1868
2743
value = request[2]
1869
2744
setattr(client_object, attrname, value)
1870
2745
1871
2746
return True
1872
2747
1873
2748
2749
def rfc3339_duration_to_delta(duration):
2750
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2751
2752
>>> rfc3339_duration_to_delta("P7D")
2753
datetime.timedelta(7)
2754
>>> rfc3339_duration_to_delta("PT60S")
2755
datetime.timedelta(0, 60)
2756
>>> rfc3339_duration_to_delta("PT60M")
2757
datetime.timedelta(0, 3600)
2758
>>> rfc3339_duration_to_delta("PT24H")
2759
datetime.timedelta(1)
2760
>>> rfc3339_duration_to_delta("P1W")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT5M30S")
2763
datetime.timedelta(0, 330)
2764
>>> rfc3339_duration_to_delta("P1DT3M20S")
2765
datetime.timedelta(1, 200)
2766
"""
2767
2768
# Parsing an RFC 3339 duration with regular expressions is not
2769
# possible - there would have to be multiple places for the same
2770
# values, like seconds. The current code, while more esoteric, is
2771
# cleaner without depending on a parsing library. If Python had a
2772
# built-in library for parsing we would use it, but we'd like to
2773
# avoid excessive use of external libraries.
2774
2775
# New type for defining tokens, syntax, and semantics all-in-one
2776
Token = collections.namedtuple("Token", (
2777
"regexp", # To match token; if "value" is not None, must have
2778
# a "group" containing digits
2779
"value", # datetime.timedelta or None
2780
"followers")) # Tokens valid after this token
2781
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2782
# the "duration" ABNF definition in RFC 3339, Appendix A.
2783
token_end = Token(re.compile(r"$"), None, frozenset())
2784
token_second = Token(re.compile(r"(\d+)S"),
2785
datetime.timedelta(seconds=1),
2786
frozenset((token_end, )))
2787
token_minute = Token(re.compile(r"(\d+)M"),
2788
datetime.timedelta(minutes=1),
2789
frozenset((token_second, token_end)))
2790
token_hour = Token(re.compile(r"(\d+)H"),
2791
datetime.timedelta(hours=1),
2792
frozenset((token_minute, token_end)))
2793
token_time = Token(re.compile(r"T"),
2794
None,
2795
frozenset((token_hour, token_minute,
2796
token_second)))
2797
token_day = Token(re.compile(r"(\d+)D"),
2798
datetime.timedelta(days=1),
2799
frozenset((token_time, token_end)))
2800
token_month = Token(re.compile(r"(\d+)M"),
2801
datetime.timedelta(weeks=4),
2802
frozenset((token_day, token_end)))
2803
token_year = Token(re.compile(r"(\d+)Y"),
2804
datetime.timedelta(weeks=52),
2805
frozenset((token_month, token_end)))
2806
token_week = Token(re.compile(r"(\d+)W"),
2807
datetime.timedelta(weeks=1),
2808
frozenset((token_end, )))
2809
token_duration = Token(re.compile(r"P"), None,
2810
frozenset((token_year, token_month,
2811
token_day, token_time,
2812
token_week)))
2813
# Define starting values:
2814
# Value so far
2815
value = datetime.timedelta()
2816
found_token = None
2817
# Following valid tokens
2818
followers = frozenset((token_duration, ))
2819
# String left to parse
2820
s = duration
2821
# Loop until end token is found
2822
while found_token is not token_end:
2823
# Search for any currently valid tokens
2824
for token in followers:
2825
match = token.regexp.match(s)
2826
if match is not None:
2827
# Token found
2828
if token.value is not None:
2829
# Value found, parse digits
2830
factor = int(match.group(1), 10)
2831
# Add to value so far
2832
value += factor * token.value
2833
# Strip token from string
2834
s = token.regexp.sub("", s, 1)
2835
# Go to found token
2836
found_token = token
2837
# Set valid next tokens
2838
followers = found_token.followers
2839
break
2840
else:
2841
# No currently valid tokens were found
2842
raise ValueError("Invalid RFC 3339 duration: {!r}"
2843
.format(duration))
2844
# End token found
2845
return value
2846
2847
1874
2848
def string_to_delta(interval):
1875
2849
"""Parse a string and return a datetime.timedelta
1876
2850
1877
2851
>>> string_to_delta('7d')
1878
2852
datetime.timedelta(7)
1879
2853
>>> string_to_delta('60s')
1887
2861
>>> string_to_delta('5m 30s')
1888
2862
datetime.timedelta(0, 330)
1889
2863
"""
2864
2865
try:
2866
return rfc3339_duration_to_delta(interval)
2867
except ValueError:
2868
pass
2869
1890
2870
timevalue = datetime.timedelta(0)
1891
2871
for s in interval.split():
1892
2872
try:
1893
suffix = unicode(s[-1])
2873
suffix = s[-1]
1894
2874
value = int(s[:-1])
1895
2875
if suffix == "d":
1896
2876
delta = datetime.timedelta(value)
1903
2883
elif suffix == "w":
1904
2884
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1905
2885
else:
1906
raise ValueError("Unknown suffix %r" % suffix)
1907
except (ValueError, IndexError) as e:
2886
raise ValueError("Unknown suffix {!r}".format(suffix))
2887
except IndexError as e:
1908
2888
raise ValueError(*(e.args))
1909
2889
timevalue += delta
1910
2890
return timevalue
1911
2891
1912
2892
1913
def daemon(nochdir = False, noclose = False):
2893
def daemon(nochdir=False, noclose=False):
1914
2894
"""See daemon(3). Standard BSD Unix function.
1915
2895
1916
2896
This should really exist as os.daemon, but it doesn't (yet)."""
1917
2897
if os.fork():
1918
2898
sys.exit()
1923
2903
sys.exit()
1924
2904
if not noclose:
1925
2905
# Close all standard open file descriptors
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2906
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1927
2907
if not stat.S_ISCHR(os.fstat(null).st_mode):
1928
2908
raise OSError(errno.ENODEV,
1929
"%s not a character device"
1930
% os.path.devnull)
2909
"{} not a character device"
2910
.format(os.devnull))
1931
2911
os.dup2(null, sys.stdin.fileno())
1932
2912
os.dup2(null, sys.stdout.fileno())
1933
2913
os.dup2(null, sys.stderr.fileno())
1936
2916
1937
2917
1938
2918
def main():
1939
2919
1940
2920
##################################################################
1941
2921
# Parsing of options, both command line and config file
1942
2922
1943
2923
parser = argparse.ArgumentParser()
1944
2924
parser.add_argument("-v", "--version", action="version",
1945
version = "%%(prog)s %s" % version,
2925
version="%(prog)s {}".format(version),
1946
2926
help="show version number and exit")
1947
2927
parser.add_argument("-i", "--interface", metavar="IF",
1948
2928
help="Bind to interface IF")
1954
2934
help="Run self-test")
1955
2935
parser.add_argument("--debug", action="store_true",
1956
2936
help="Debug mode; run in foreground and log"
1957
" to terminal")
2937
" to terminal", default=None)
1958
2938
parser.add_argument("--debuglevel", metavar="LEVEL",
1959
2939
help="Debug level for stdout output")
1960
2940
parser.add_argument("--priority", help="GnuTLS"
1967
2947
" files")
1968
2948
parser.add_argument("--no-dbus", action="store_false",
1969
2949
dest="use_dbus", help="Do not provide D-Bus"
1970
" system bus interface")
2950
" system bus interface", default=None)
1971
2951
parser.add_argument("--no-ipv6", action="store_false",
1972
dest="use_ipv6", help="Do not use IPv6")
2952
dest="use_ipv6", help="Do not use IPv6",
2953
default=None)
1973
2954
parser.add_argument("--no-restore", action="store_false",
1974
2955
dest="restore", help="Do not restore stored"
1975
" state")
2956
" state", default=None)
2957
parser.add_argument("--socket", type=int,
2958
help="Specify a file descriptor to a network"
2959
" socket to use instead of creating one")
1976
2960
parser.add_argument("--statedir", metavar="DIR",
1977
2961
help="Directory to save/restore state in")
1978
2962
parser.add_argument("--foreground", action="store_true",
2963
help="Run in foreground", default=None)
2964
parser.add_argument("--no-zeroconf", action="store_false",
2965
dest="zeroconf", help="Do not use Zeroconf",
2966
default=None)
2967
1979
2968
options = parser.parse_args()
1980
2969
1981
2970
if options.check:
1982
2971
import doctest
1983
doctest.testmod()
1984
sys.exit()
1985
2972
fail_count, test_count = doctest.testmod()
2973
sys.exit(os.EX_OK if fail_count == 0 else 1)
2974
1986
2975
# Default values for config file for server-global settings
1987
server_defaults = { "interface": "",
1988
"address": "",
1989
"port": "",
1990
"debug": "False",
1991
"priority":
1992
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1993
"servicename": "Mandos",
1994
"use_dbus": "True",
1995
"use_ipv6": "True",
1996
"debuglevel": "",
1997
"restore": "True",
1998
"statedir": "/var/lib/mandos"
1999
}
2000
2976
if gnutls.has_rawpk:
2977
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2978
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2979
else:
2980
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2981
":+SIGN-DSA-SHA256")
2982
server_defaults = {"interface": "",
2983
"address": "",
2984
"port": "",
2985
"debug": "False",
2986
"priority": priority,
2987
"servicename": "Mandos",
2988
"use_dbus": "True",
2989
"use_ipv6": "True",
2990
"debuglevel": "",
2991
"restore": "True",
2992
"socket": "",
2993
"statedir": "/var/lib/mandos",
2994
"foreground": "False",
2995
"zeroconf": "True",
2996
}
2997
del priority
2998
2001
2999
# Parse config file for server-global settings
2002
3000
server_config = configparser.SafeConfigParser(server_defaults)
2003
3001
del server_defaults
2004
server_config.read(os.path.join(options.configdir,
2005
"mandos.conf"))
3002
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2006
3003
# Convert the SafeConfigParser object to a dict
2007
3004
server_settings = server_config.defaults()
2008
3005
# Use the appropriate methods on the non-string config options
2009
for option in ("debug", "use_dbus", "use_ipv6"):
3006
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3007
"foreground", "zeroconf"):
2010
3008
server_settings[option] = server_config.getboolean("DEFAULT",
2011
3009
option)
2012
3010
if server_settings["port"]:
2013
3011
server_settings["port"] = server_config.getint("DEFAULT",
2014
3012
"port")
3013
if server_settings["socket"]:
3014
server_settings["socket"] = server_config.getint("DEFAULT",
3015
"socket")
3016
# Later, stdin will, and stdout and stderr might, be dup'ed
3017
# over with an opened os.devnull. But we don't want this to
3018
# happen with a supplied network socket.
3019
if 0 <= server_settings["socket"] <= 2:
3020
server_settings["socket"] = os.dup(server_settings
3021
["socket"])
2015
3022
del server_config
2016
3023
2017
3024
# Override the settings from the config file with command line
2018
3025
# options, if set.
2019
3026
for option in ("interface", "address", "port", "debug",
2020
"priority", "servicename", "configdir",
2021
"use_dbus", "use_ipv6", "debuglevel", "restore",
2022
"statedir"):
3027
"priority", "servicename", "configdir", "use_dbus",
3028
"use_ipv6", "debuglevel", "restore", "statedir",
3029
"socket", "foreground", "zeroconf"):
2023
3030
value = getattr(options, option)
2024
3031
if value is not None:
2025
3032
server_settings[option] = value
2026
3033
del options
2027
3034
# Force all strings to be unicode
2028
3035
for option in server_settings.keys():
2029
if type(server_settings[option]) is str:
2030
server_settings[option] = unicode(server_settings[option])
3036
if isinstance(server_settings[option], bytes):
3037
server_settings[option] = (server_settings[option]
3038
.decode("utf-8"))
3039
# Force all boolean options to be boolean
3040
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3041
"foreground", "zeroconf"):
3042
server_settings[option] = bool(server_settings[option])
3043
# Debug implies foreground
3044
if server_settings["debug"]:
3045
server_settings["foreground"] = True
2031
3046
# Now we have our good server settings in "server_settings"
2032
3047
2033
3048
##################################################################
2034
3049
3050
if (not server_settings["zeroconf"]
3051
and not (server_settings["port"]
3052
or server_settings["socket"] != "")):
3053
parser.error("Needs port or socket to work without Zeroconf")
3054
2035
3055
# For convenience
2036
3056
debug = server_settings["debug"]
2037
3057
debuglevel = server_settings["debuglevel"]
2039
3059
use_ipv6 = server_settings["use_ipv6"]
2040
3060
stored_state_path = os.path.join(server_settings["statedir"],
2041
3061
stored_state_file)
2042
3062
foreground = server_settings["foreground"]
3063
zeroconf = server_settings["zeroconf"]
3064
2043
3065
if debug:
2044
initlogger(logging.DEBUG)
3066
initlogger(debug, logging.DEBUG)
2045
3067
else:
2046
3068
if not debuglevel:
2047
initlogger()
3069
initlogger(debug)
2048
3070
else:
2049
3071
level = getattr(logging, debuglevel.upper())
2050
initlogger(level)
2051
3072
initlogger(debug, level)
3073
2052
3074
if server_settings["servicename"] != "Mandos":
2053
syslogger.setFormatter(logging.Formatter
2054
('Mandos (%s) [%%(process)d]:'
2055
' %%(levelname)s: %%(message)s'
2056
% server_settings["servicename"]))
2057
3075
syslogger.setFormatter(
3076
logging.Formatter('Mandos ({}) [%(process)d]:'
3077
' %(levelname)s: %(message)s'.format(
3078
server_settings["servicename"])))
3079
2058
3080
# Parse config file with clients
2059
client_defaults = { "timeout": "5m",
2060
"extended_timeout": "15m",
2061
"interval": "2m",
2062
"checker": "fping -q -- %%(host)s",
2063
"host": "",
2064
"approval_delay": "0s",
2065
"approval_duration": "1s",
2066
}
2067
client_config = configparser.SafeConfigParser(client_defaults)
3081
client_config = configparser.SafeConfigParser(Client
3082
.client_defaults)
2068
3083
client_config.read(os.path.join(server_settings["configdir"],
2069
3084
"clients.conf"))
2070
3085
2071
3086
global mandos_dbus_service
2072
3087
mandos_dbus_service = None
2073
2074
tcp_server = MandosServer((server_settings["address"],
2075
server_settings["port"]),
2076
ClientHandler,
2077
interface=(server_settings["interface"]
2078
or None),
2079
use_ipv6=use_ipv6,
2080
gnutls_priority=
2081
server_settings["priority"],
2082
use_dbus=use_dbus)
2083
if not debug:
2084
pidfilename = "/var/run/mandos.pid"
2085
try:
2086
pidfile = open(pidfilename, "w")
2087
except IOError:
2088
logger.error("Could not open file %r", pidfilename)
2089
2090
try:
2091
uid = pwd.getpwnam("_mandos").pw_uid
2092
gid = pwd.getpwnam("_mandos").pw_gid
2093
except KeyError:
2094
try:
2095
uid = pwd.getpwnam("mandos").pw_uid
2096
gid = pwd.getpwnam("mandos").pw_gid
3088
3089
socketfd = None
3090
if server_settings["socket"] != "":
3091
socketfd = server_settings["socket"]
3092
tcp_server = MandosServer(
3093
(server_settings["address"], server_settings["port"]),
3094
ClientHandler,
3095
interface=(server_settings["interface"] or None),
3096
use_ipv6=use_ipv6,
3097
gnutls_priority=server_settings["priority"],
3098
use_dbus=use_dbus,
3099
socketfd=socketfd)
3100
if not foreground:
3101
pidfilename = "/run/mandos.pid"
3102
if not os.path.isdir("/run/."):
3103
pidfilename = "/var/run/mandos.pid"
3104
pidfile = None
3105
try:
3106
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3107
except IOError as e:
3108
logger.error("Could not open file %r", pidfilename,
3109
exc_info=e)
3110
3111
for name, group in (("_mandos", "_mandos"),
3112
("mandos", "mandos"),
3113
("nobody", "nogroup")):
3114
try:
3115
uid = pwd.getpwnam(name).pw_uid
3116
gid = pwd.getpwnam(group).pw_gid
3117
break
2097
3118
except KeyError:
2098
try:
2099
uid = pwd.getpwnam("nobody").pw_uid
2100
gid = pwd.getpwnam("nobody").pw_gid
2101
except KeyError:
2102
uid = 65534
2103
gid = 65534
3119
continue
3120
else:
3121
uid = 65534
3122
gid = 65534
2104
3123
try:
2105
3124
os.setgid(gid)
2106
3125
os.setuid(uid)
3126
if debug:
3127
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3128
gid))
2107
3129
except OSError as error:
2108
if error[0] != errno.EPERM:
2109
raise error
2110
3130
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3131
.format(uid, gid, os.strerror(error.errno)))
3132
if error.errno != errno.EPERM:
3133
raise
3134
2111
3135
if debug:
2112
3136
# Enable all possible GnuTLS debugging
2113
3137
2114
3138
# "Use a log level over 10 to enable all debugging options."
2115
3139
# - GnuTLS manual
2116
gnutls.library.functions.gnutls_global_set_log_level(11)
2117
2118
@gnutls.library.types.gnutls_log_func
3140
gnutls.global_set_log_level(11)
3141
3142
@gnutls.log_func
2119
3143
def debug_gnutls(level, string):
2120
3144
logger.debug("GnuTLS: %s", string[:-1])
2121
2122
(gnutls.library.functions
2123
.gnutls_global_set_log_function(debug_gnutls))
2124
3145
3146
gnutls.global_set_log_function(debug_gnutls)
3147
2125
3148
# Redirect stdin so all checkers get /dev/null
2126
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2127
3150
os.dup2(null, sys.stdin.fileno())
2128
3151
if null > 2:
2129
3152
os.close(null)
2130
else:
2131
# No console logging
2132
logger.removeHandler(console)
2133
3153
2134
3154
# Need to fork before connecting to D-Bus
2135
if not debug:
3155
if not foreground:
2136
3156
# Close all input and output, do double fork, etc.
2137
3157
daemon()
2138
3158
3159
# multiprocessing will use threads, so before we use GLib we need
3160
# to inform GLib that threads will be used.
3161
GLib.threads_init()
3162
2139
3163
global main_loop
2140
3164
# From the Avahi example code
2141
DBusGMainLoop(set_as_default=True )
2142
main_loop = gobject.MainLoop()
3165
DBusGMainLoop(set_as_default=True)
3166
main_loop = GLib.MainLoop()
2143
3167
bus = dbus.SystemBus()
2144
3168
# End of Avahi example code
2145
3169
if use_dbus:
2146
3170
try:
2147
3171
bus_name = dbus.service.BusName("se.recompile.Mandos",
2148
bus, do_not_queue=True)
2149
old_bus_name = (dbus.service.BusName
2150
("se.bsnet.fukt.Mandos", bus,
2151
do_not_queue=True))
2152
except dbus.exceptions.NameExistsException as e:
2153
logger.error(unicode(e) + ", disabling D-Bus")
3172
bus,
3173
do_not_queue=True)
3174
old_bus_name = dbus.service.BusName(
3175
"se.bsnet.fukt.Mandos", bus,
3176
do_not_queue=True)
3177
except dbus.exceptions.DBusException as e:
3178
logger.error("Disabling D-Bus:", exc_info=e)
2154
3179
use_dbus = False
2155
3180
server_settings["use_dbus"] = False
2156
3181
tcp_server.use_dbus = False
2157
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2158
service = AvahiServiceToSyslog(name =
2159
server_settings["servicename"],
2160
servicetype = "_mandos._tcp",
2161
protocol = protocol, bus = bus)
2162
if server_settings["interface"]:
2163
service.interface = (if_nametoindex
2164
(str(server_settings["interface"])))
2165
3182
if zeroconf:
3183
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3184
service = AvahiServiceToSyslog(
3185
name=server_settings["servicename"],
3186
servicetype="_mandos._tcp",
3187
protocol=protocol,
3188
bus=bus)
3189
if server_settings["interface"]:
3190
service.interface = if_nametoindex(
3191
server_settings["interface"].encode("utf-8"))
3192
2166
3193
global multiprocessing_manager
2167
3194
multiprocessing_manager = multiprocessing.Manager()
2168
3195
2169
3196
client_class = Client
2170
3197
if use_dbus:
2171
client_class = functools.partial(ClientDBusTransitional,
2172
bus = bus)
2173
2174
special_settings = {
2175
# Some settings need to be accessd by special methods;
2176
# booleans need .getboolean(), etc. Here is a list of them:
2177
"approved_by_default":
2178
lambda section:
2179
client_config.getboolean(section, "approved_by_default"),
2180
}
2181
# Construct a new dict of client settings of this form:
2182
# { client_name: {setting_name: value, ...}, ...}
2183
# with exceptions for any special settings as defined above
2184
client_settings = dict((clientname,
2185
dict((setting,
2186
(value
2187
if setting not in special_settings
2188
else special_settings[setting]
2189
(clientname)))
2190
for setting, value in
2191
client_config.items(clientname)))
2192
for clientname in client_config.sections())
2193
3198
client_class = functools.partial(ClientDBus, bus=bus)
3199
3200
client_settings = Client.config_parser(client_config)
2194
3201
old_client_settings = {}
2195
clients_data = []
2196
3202
clients_data = {}
3203
3204
# This is used to redirect stdout and stderr for checker processes
3205
global wnull
3206
wnull = open(os.devnull, "w") # A writable /dev/null
3207
# Only used if server is running in foreground but not in debug
3208
# mode
3209
if debug or not foreground:
3210
wnull.close()
3211
2197
3212
# Get client data and settings from last running state.
2198
3213
if server_settings["restore"]:
2199
3214
try:
2200
3215
with open(stored_state_path, "rb") as stored_state:
2201
clients_data, old_client_settings = (pickle.load
2202
(stored_state))
3216
if sys.version_info.major == 2:
3217
clients_data, old_client_settings = pickle.load(
3218
stored_state)
3219
else:
3220
bytes_clients_data, bytes_old_client_settings = (
3221
pickle.load(stored_state, encoding="bytes"))
3222
# Fix bytes to strings
3223
# clients_data
3224
# .keys()
3225
clients_data = {(key.decode("utf-8")
3226
if isinstance(key, bytes)
3227
else key): value
3228
for key, value in
3229
bytes_clients_data.items()}
3230
del bytes_clients_data
3231
for key in clients_data:
3232
value = {(k.decode("utf-8")
3233
if isinstance(k, bytes) else k): v
3234
for k, v in
3235
clients_data[key].items()}
3236
clients_data[key] = value
3237
# .client_structure
3238
value["client_structure"] = [
3239
(s.decode("utf-8")
3240
if isinstance(s, bytes)
3241
else s) for s in
3242
value["client_structure"]]
3243
# .name & .host
3244
for k in ("name", "host"):
3245
if isinstance(value[k], bytes):
3246
value[k] = value[k].decode("utf-8")
3247
if not value.has_key("key_id"):
3248
value["key_id"] = ""
3249
elif not value.has_key("fingerprint"):
3250
value["fingerprint"] = ""
3251
# old_client_settings
3252
# .keys()
3253
old_client_settings = {
3254
(key.decode("utf-8")
3255
if isinstance(key, bytes)
3256
else key): value
3257
for key, value in
3258
bytes_old_client_settings.items()}
3259
del bytes_old_client_settings
3260
# .host
3261
for value in old_client_settings.values():
3262
if isinstance(value["host"], bytes):
3263
value["host"] = (value["host"]
3264
.decode("utf-8"))
2203
3265
os.remove(stored_state_path)
2204
3266
except IOError as e:
2205
logger.warning("Could not load persistent state: {0}"
2206
.format(e))
2207
if e.errno != errno.ENOENT:
3267
if e.errno == errno.ENOENT:
3268
logger.warning("Could not load persistent state:"
3269
" {}".format(os.strerror(e.errno)))
3270
else:
3271
logger.critical("Could not load persistent state:",
3272
exc_info=e)
2208
3273
raise
2209
2210
with Crypto() as crypt:
2211
for client in clients_data:
2212
client_name = client["name"]
2213
3274
except EOFError as e:
3275
logger.warning("Could not load persistent state: "
3276
"EOFError:",
3277
exc_info=e)
3278
3279
with PGPEngine() as pgp:
3280
for client_name, client in clients_data.items():
3281
# Skip removed clients
3282
if client_name not in client_settings:
3283
continue
3284
2214
3285
# Decide which value to use after restoring saved state.
2215
3286
# We have three different values: Old config file,
2216
3287
# new config file, and saved state.
2221
3292
# For each value in new config, check if it
2222
3293
# differs from the old config value (Except for
2223
3294
# the "secret" attribute)
2224
if (name != "secret" and
2225
value != old_client_settings[client_name]
2226
[name]):
2227
setattr(client, name, value)
3295
if (name != "secret"
3296
and (value !=
3297
old_client_settings[client_name][name])):
3298
client[name] = value
2228
3299
except KeyError:
2229
3300
pass
2230
3301
2231
3302
# Clients who has passed its expire date can still be
2232
# enabled if its last checker was sucessful. Clients
2233
# whose checker failed before we stored its state is
2234
# assumed to have failed all checkers during downtime.
2235
if client["enabled"] and client["last_checked_ok"]:
2236
if ((datetime.datetime.utcnow()
2237
- client["last_checked_ok"])
2238
> client["interval"]):
2239
if client["last_checker_status"] != 0:
3303
# enabled if its last checker was successful. A Client
3304
# whose checker succeeded before we stored its state is
3305
# assumed to have successfully run all checkers during
3306
# downtime.
3307
if client["enabled"]:
3308
if datetime.datetime.utcnow() >= client["expires"]:
3309
if not client["last_checked_ok"]:
3310
logger.warning(
3311
"disabling client {} - Client never "
3312
"performed a successful checker".format(
3313
client_name))
3314
client["enabled"] = False
3315
elif client["last_checker_status"] != 0:
3316
logger.warning(
3317
"disabling client {} - Client last"
3318
" checker failed with error code"
3319
" {}".format(
3320
client_name,
3321
client["last_checker_status"]))
2240
3322
client["enabled"] = False
2241
3323
else:
2242
client["expires"] = (datetime.datetime
2243
.utcnow()
2244
+ client["timeout"])
2245
2246
client["changedstate"] = (multiprocessing_manager
2247
.Condition
2248
(multiprocessing_manager
2249
.Lock()))
2250
if use_dbus:
2251
new_client = (ClientDBusTransitional.__new__
2252
(ClientDBusTransitional))
2253
tcp_server.clients[client_name] = new_client
2254
new_client.bus = bus
2255
for name, value in client.iteritems():
2256
setattr(new_client, name, value)
2257
client_object_name = unicode(client_name).translate(
2258
{ord("."): ord("_"),
2259
ord("-"): ord("_")})
2260
new_client.dbus_object_path = (dbus.ObjectPath
2261
("/clients/"
2262
+ client_object_name))
2263
DBusObjectWithProperties.__init__(new_client,
2264
new_client.bus,
2265
new_client
2266
.dbus_object_path)
2267
else:
2268
tcp_server.clients[client_name] = (Client.__new__
2269
(Client))
2270
for name, value in client.iteritems():
2271
setattr(tcp_server.clients[client_name],
2272
name, value)
2273
3324
client["expires"] = (
3325
datetime.datetime.utcnow()
3326
+ client["timeout"])
3327
logger.debug("Last checker succeeded,"
3328
" keeping {} enabled".format(
3329
client_name))
2274
3330
try:
2275
tcp_server.clients[client_name].secret = (
2276
crypt.decrypt(tcp_server.clients[client_name]
2277
.encrypted_secret,
2278
client_settings[client_name]
2279
["secret"]))
2280
except CryptoError:
3331
client["secret"] = pgp.decrypt(
3332
client["encrypted_secret"],
3333
client_settings[client_name]["secret"])
3334
except PGPError:
2281
3335
# If decryption fails, we use secret from new settings
2282
tcp_server.clients[client_name].secret = (
2283
client_settings[client_name]["secret"])
2284
2285
# Create/remove clients based on new changes made to config
2286
for clientname in set(old_client_settings) - set(client_settings):
2287
del tcp_server.clients[clientname]
2288
for clientname in set(client_settings) - set(old_client_settings):
2289
tcp_server.clients[clientname] = (client_class(name
2290
= clientname,
2291
config =
2292
client_settings
2293
[clientname]))
2294
3336
logger.debug("Failed to decrypt {} old secret".format(
3337
client_name))
3338
client["secret"] = (client_settings[client_name]
3339
["secret"])
3340
3341
# Add/remove clients based on new changes made to config
3342
for client_name in (set(old_client_settings)
3343
- set(client_settings)):
3344
del clients_data[client_name]
3345
for client_name in (set(client_settings)
3346
- set(old_client_settings)):
3347
clients_data[client_name] = client_settings[client_name]
3348
3349
# Create all client objects
3350
for client_name, client in clients_data.items():
3351
tcp_server.clients[client_name] = client_class(
3352
name=client_name,
3353
settings=client,
3354
server_settings=server_settings)
3355
2295
3356
if not tcp_server.clients:
2296
3357
logger.warning("No clients defined")
2297
2298
if not debug:
2299
try:
2300
with pidfile:
2301
pid = os.getpid()
2302
pidfile.write(str(pid) + "\n".encode("utf-8"))
2303
del pidfile
2304
except IOError:
2305
logger.error("Could not write to file %r with PID %d",
2306
pidfilename, pid)
2307
except NameError:
2308
# "pidfile" was never created
2309
pass
3358
3359
if not foreground:
3360
if pidfile is not None:
3361
pid = os.getpid()
3362
try:
3363
with pidfile:
3364
print(pid, file=pidfile)
3365
except IOError:
3366
logger.error("Could not write to file %r with PID %d",
3367
pidfilename, pid)
3368
del pidfile
2310
3369
del pidfilename
2311
2312
signal.signal(signal.SIGINT, signal.SIG_IGN)
2313
2314
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2315
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2316
3370
3371
for termsig in (signal.SIGHUP, signal.SIGTERM):
3372
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3373
lambda: main_loop.quit() and False)
3374
2317
3375
if use_dbus:
2318
class MandosDBusService(dbus.service.Object):
3376
3377
@alternate_dbus_interfaces(
3378
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3379
class MandosDBusService(DBusObjectWithObjectManager):
2319
3380
"""A D-Bus proxy object"""
3381
2320
3382
def __init__(self):
2321
3383
dbus.service.Object.__init__(self, bus, "/")
3384
2322
3385
_interface = "se.recompile.Mandos"
2323
3386
2324
3387
@dbus.service.signal(_interface, signature="o")
2325
3388
def ClientAdded(self, objpath):
2326
3389
"D-Bus signal"
2327
3390
pass
2328
3391
2329
3392
@dbus.service.signal(_interface, signature="ss")
2330
def ClientNotFound(self, fingerprint, address):
3393
def ClientNotFound(self, key_id, address):
2331
3394
"D-Bus signal"
2332
3395
pass
2333
3396
3397
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3398
"true"})
2334
3399
@dbus.service.signal(_interface, signature="os")
2335
3400
def ClientRemoved(self, objpath, name):
2336
3401
"D-Bus signal"
2337
3402
pass
2338
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
2339
3406
@dbus.service.method(_interface, out_signature="ao")
2340
3407
def GetAllClients(self):
2341
3408
"D-Bus method"
2342
return dbus.Array(c.dbus_object_path
2343
for c in
2344
tcp_server.clients.itervalues())
2345
3409
return dbus.Array(c.dbus_object_path for c in
3410
tcp_server.clients.values())
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2346
3414
@dbus.service.method(_interface,
2347
3415
out_signature="a{oa{sv}}")
2348
3416
def GetAllClientsWithProperties(self):
2349
3417
"D-Bus method"
2350
3418
return dbus.Dictionary(
2351
((c.dbus_object_path, c.GetAll(""))
2352
for c in tcp_server.clients.itervalues()),
3419
{c.dbus_object_path: c.GetAll(
3420
"se.recompile.Mandos.Client")
3421
for c in tcp_server.clients.values()},
2353
3422
signature="oa{sv}")
2354
3423
2355
3424
@dbus.service.method(_interface, in_signature="o")
2356
3425
def RemoveClient(self, object_path):
2357
3426
"D-Bus method"
2358
for c in tcp_server.clients.itervalues():
3427
for c in tcp_server.clients.values():
2359
3428
if c.dbus_object_path == object_path:
2360
3429
del tcp_server.clients[c.name]
2361
3430
c.remove_from_connection()
2362
# Don't signal anything except ClientRemoved
3431
# Don't signal the disabling
2363
3432
c.disable(quiet=True)
2364
# Emit D-Bus signal
2365
self.ClientRemoved(object_path, c.name)
3433
# Emit D-Bus signal for removal
3434
self.client_removed_signal(c)
2366
3435
return
2367
3436
raise KeyError(object_path)
2368
3437
2369
3438
del _interface
2370
2371
class MandosDBusServiceTransitional(MandosDBusService):
2372
__metaclass__ = AlternateDBusNamesMetaclass
2373
mandos_dbus_service = MandosDBusServiceTransitional()
2374
3439
3440
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3441
out_signature="a{oa{sa{sv}}}")
3442
def GetManagedObjects(self):
3443
"""D-Bus method"""
3444
return dbus.Dictionary(
3445
{client.dbus_object_path:
3446
dbus.Dictionary(
3447
{interface: client.GetAll(interface)
3448
for interface in
3449
client._get_all_interface_names()})
3450
for client in tcp_server.clients.values()})
3451
3452
def client_added_signal(self, client):
3453
"""Send the new standard signal and the old signal"""
3454
if use_dbus:
3455
# New standard signal
3456
self.InterfacesAdded(
3457
client.dbus_object_path,
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()}))
3462
# Old signal
3463
self.ClientAdded(client.dbus_object_path)
3464
3465
def client_removed_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesRemoved(
3470
client.dbus_object_path,
3471
client._get_all_interface_names())
3472
# Old signal
3473
self.ClientRemoved(client.dbus_object_path,
3474
client.name)
3475
3476
mandos_dbus_service = MandosDBusService()
3477
3478
# Save modules to variables to exempt the modules from being
3479
# unloaded before the function registered with atexit() is run.
3480
mp = multiprocessing
3481
wn = wnull
3482
2375
3483
def cleanup():
2376
3484
"Cleanup function; run on exit"
2377
service.cleanup()
2378
2379
multiprocessing.active_children()
3485
if zeroconf:
3486
service.cleanup()
3487
3488
mp.active_children()
3489
wn.close()
2380
3490
if not (tcp_server.clients or client_settings):
2381
3491
return
2382
3492
2383
3493
# Store client before exiting. Secrets are encrypted with key
2384
3494
# based on what config file has. If config file is
2385
3495
# removed/edited, old secret will thus be unrecovable.
2386
clients = []
2387
with Crypto() as crypt:
2388
for client in tcp_server.clients.itervalues():
3496
clients = {}
3497
with PGPEngine() as pgp:
3498
for client in tcp_server.clients.values():
2389
3499
key = client_settings[client.name]["secret"]
2390
client.encrypted_secret = crypt.encrypt(client.secret,
2391
key)
3500
client.encrypted_secret = pgp.encrypt(client.secret,
3501
key)
2392
3502
client_dict = {}
2393
2394
# A list of attributes that will not be stored when
2395
# shutting down.
2396
exclude = set(("bus", "changedstate", "secret"))
2397
for name, typ in (inspect.getmembers
2398
(dbus.service.Object)):
3503
3504
# A list of attributes that can not be pickled
3505
# + secret.
3506
exclude = {"bus", "changedstate", "secret",
3507
"checker", "server_settings"}
3508
for name, typ in inspect.getmembers(dbus.service
3509
.Object):
2399
3510
exclude.add(name)
2400
3511
2401
3512
client_dict["encrypted_secret"] = (client
2402
3513
.encrypted_secret)
2403
3514
for attr in client.client_structure:
2404
3515
if attr not in exclude:
2405
3516
client_dict[attr] = getattr(client, attr)
2406
2407
clients.append(client_dict)
3517
3518
clients[client.name] = client_dict
2408
3519
del client_settings[client.name]["secret"]
2409
3520
2410
3521
try:
2411
with os.fdopen(os.open(stored_state_path,
2412
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2413
0600), "wb") as stored_state:
2414
pickle.dump((clients, client_settings), stored_state)
3522
with tempfile.NamedTemporaryFile(
3523
mode='wb',
3524
suffix=".pickle",
3525
prefix='clients-',
3526
dir=os.path.dirname(stored_state_path),
3527
delete=False) as stored_state:
3528
pickle.dump((clients, client_settings), stored_state,
3529
protocol=2)
3530
tempname = stored_state.name
3531
os.rename(tempname, stored_state_path)
2415
3532
except (IOError, OSError) as e:
2416
logger.warning("Could not save persistent state: {0}"
2417
.format(e))
2418
if e.errno not in (errno.ENOENT, errno.EACCES):
3533
if not debug:
3534
try:
3535
os.remove(tempname)
3536
except NameError:
3537
pass
3538
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3539
logger.warning("Could not save persistent state: {}"
3540
.format(os.strerror(e.errno)))
3541
else:
3542
logger.warning("Could not save persistent state:",
3543
exc_info=e)
2419
3544
raise
2420
3545
2421
3546
# Delete all clients, and settings from config
2422
3547
while tcp_server.clients:
2423
3548
name, client = tcp_server.clients.popitem()
2424
3549
if use_dbus:
2425
3550
client.remove_from_connection()
2426
# Don't signal anything except ClientRemoved
3551
# Don't signal the disabling
2427
3552
client.disable(quiet=True)
3553
# Emit D-Bus signal for removal
2428
3554
if use_dbus:
2429
# Emit D-Bus signal
2430
mandos_dbus_service.ClientRemoved(client
2431
.dbus_object_path,
2432
client.name)
3555
mandos_dbus_service.client_removed_signal(client)
2433
3556
client_settings.clear()
2434
3557
2435
3558
atexit.register(cleanup)
2436
2437
for client in tcp_server.clients.itervalues():
3559
3560
for client in tcp_server.clients.values():
2438
3561
if use_dbus:
2439
# Emit D-Bus signal
2440
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
# Emit D-Bus signal for adding
3563
mandos_dbus_service.client_added_signal(client)
2441
3564
# Need to initiate checking of clients
2442
3565
if client.enabled:
2443
3566
client.init_checker()
2444
3567
2445
3568
tcp_server.enable()
2446
3569
tcp_server.server_activate()
2447
3570
2448
3571
# Find out what port we got
2449
service.port = tcp_server.socket.getsockname()[1]
3572
if zeroconf:
3573
service.port = tcp_server.socket.getsockname()[1]
2450
3574
if use_ipv6:
2451
3575
logger.info("Now listening on address %r, port %d,"
2452
" flowinfo %d, scope_id %d"
2453
% tcp_server.socket.getsockname())
3576
" flowinfo %d, scope_id %d",
3577
*tcp_server.socket.getsockname())
2454
3578
else: # IPv4
2455
logger.info("Now listening on address %r, port %d"
2456
% tcp_server.socket.getsockname())
2457
2458
#service.interface = tcp_server.socket.getsockname()[3]
2459
3579
logger.info("Now listening on address %r, port %d",
3580
*tcp_server.socket.getsockname())
3581
3582
# service.interface = tcp_server.socket.getsockname()[3]
3583
2460
3584
try:
2461
# From the Avahi example code
2462
try:
2463
service.activate()
2464
except dbus.exceptions.DBusException as error:
2465
logger.critical("DBusException: %s", error)
2466
cleanup()
2467
sys.exit(1)
2468
# End of Avahi example code
2469
2470
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2471
lambda *args, **kwargs:
2472
(tcp_server.handle_request
2473
(*args[2:], **kwargs) or True))
2474
3585
if zeroconf:
3586
# From the Avahi example code
3587
try:
3588
service.activate()
3589
except dbus.exceptions.DBusException as error:
3590
logger.critical("D-Bus Exception", exc_info=error)
3591
cleanup()
3592
sys.exit(1)
3593
# End of Avahi example code
3594
3595
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3596
lambda *args, **kwargs:
3597
(tcp_server.handle_request
3598
(*args[2:], **kwargs) or True))
3599
2475
3600
logger.debug("Starting main loop")
2476
3601
main_loop.run()
2477
3602
except AvahiError as error:
2478
logger.critical("AvahiError: %s", error)
3603
logger.critical("Avahi Error", exc_info=error)
2479
3604
cleanup()
2480
3605
sys.exit(1)
2481
3606
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0