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- Committer: Teddy Hogeborn
- Date: 2011-11-27 19:37:54 UTC
- mto: (237.12.11 mandos-persistent)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: teddy@recompile.se-20111127193754-4366e18gmi11kew0
* mandos (_timedelta_to_milliseconds): Renamed to
"timedelta_to_milliseconds";
all callers changed.
(Client._approved): Bug fix; renamed to "approved" without
underscore. All users changed.
(ProxyClient): Removed superfluous parens in "if" statements.
(ClientHandler.handle): Bug fix: Emit NewRequest signal *after*
client is found, not before.
"timedelta_to_milliseconds";
all callers changed.
(Client._approved): Bug fix; renamed to "approved" without
underscore. All users changed.
(ProxyClient): Removed superfluous parens in "if" statements.
(ClientHandler.handle): Bug fix: Emit NewRequest signal *after*
client is found, not before.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
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 © 2008-2019 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
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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
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
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
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
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
68
81
69
import dbus
82
70
import dbus.service
83
from gi.repository import GLib
71
import gobject
72
import avahi
84
73
from dbus.mainloop.glib import DBusGMainLoop
85
74
import ctypes
86
75
import ctypes.util
87
76
import xml.dom.minidom
88
77
import inspect
78
import GnuPGInterface
89
79
90
# Try to find the value of SO_BINDTODEVICE:
91
80
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:
94
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
82
except AttributeError:
96
83
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
84
from IN import SO_BINDTODEVICE
100
85
except ImportError:
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 = "1.8.3"
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
119
90
stored_state_file = "clients.pickle"
120
91
121
92
logger = logging.getLogger()
122
syslogger = None
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
123
96
124
97
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
127
101
except (OSError, AttributeError):
128
129
102
def if_nametoindex(interface):
130
103
"Get an interface index the hard way, i.e. using fcntl()"
131
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
105
with contextlib.closing(socket.socket()) as s:
133
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
136
111
return interface_index
137
112
138
113
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):
114
def initlogger(level=logging.WARNING):
156
115
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
116
162
117
syslogger.setFormatter(logging.Formatter
163
118
('Mandos [%(process)d]: %(levelname)s:'
164
119
' %(message)s'))
165
120
logger.addHandler(syslogger)
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)
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)
174
128
logger.setLevel(level)
175
129
176
130
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
131
class CryptoError(Exception):
179
132
pass
180
133
181
134
182
class PGPEngine(object):
135
class Crypto(object):
183
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
186
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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
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
206
146
def __enter__(self):
207
147
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
148
149
def __exit__ (self, exc_type, exc_value, traceback):
210
150
self._cleanup()
211
151
return False
212
152
213
153
def __del__(self):
214
154
self._cleanup()
215
155
216
156
def _cleanup(self):
217
157
if self.tempdir is not None:
218
158
# Delete contents of tempdir
219
159
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
160
topdown = False):
221
161
for filename in files:
222
162
os.remove(os.path.join(root, filename))
223
163
for dirname in dirs:
225
165
# Remove tempdir
226
166
os.rmdir(self.tempdir)
227
167
self.tempdir = None
228
168
229
169
def password_encode(self, password):
230
170
# Passphrase can not be empty and can not contain newlines or
231
171
# NUL bytes. So we prefix it and hex encode it.
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
172
return b"mandos" + binascii.hexlify(password)
173
240
174
def encrypt(self, data, password):
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)
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
256
189
return ciphertext
257
190
258
191
def decrypt(self, data, password):
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)
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
274
206
return decrypted_plaintext
275
207
276
208
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
302
209
303
210
class AvahiError(Exception):
304
211
def __init__(self, value, *args, **kwargs):
305
212
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
309
216
310
217
class AvahiServiceError(AvahiError):
311
218
pass
312
219
313
314
220
class AvahiGroupError(AvahiError):
315
221
pass
316
222
317
223
318
224
class AvahiService(object):
319
225
"""An Avahi (Zeroconf) service.
320
226
321
227
Attributes:
322
228
interface: integer; avahi.IF_UNSPEC or an interface index.
323
229
Used to optionally bind to the specified interface.
324
230
name: string; Example: 'Mandos'
325
231
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
232
See <http://www.dns-sd.org/ServiceTypes.html>
327
233
port: integer; what port to announce
328
234
TXT: list of strings; TXT record for the service
329
235
domain: string; Domain to publish on, default to .local if empty.
335
241
server: D-Bus Server
336
242
bus: dbus.SystemBus()
337
243
"""
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):
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):
350
248
self.interface = interface
351
249
self.name = name
352
250
self.type = servicetype
361
259
self.server = None
362
260
self.bus = bus
363
261
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
262
def rename(self):
366
263
"""Derived from the Avahi example code"""
367
264
if self.rename_count >= self.max_renames:
368
265
logger.critical("No suitable Zeroconf service name found"
369
266
" after %i retries, exiting.",
370
267
self.rename_count)
371
268
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
375
271
logger.info("Changing Zeroconf service name to %r ...",
376
272
self.name)
377
if remove:
378
self.remove()
273
self.remove()
379
274
try:
380
275
self.add()
381
276
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
391
281
def remove(self):
392
282
"""Derived from the Avahi example code"""
393
283
if self.entry_group_state_changed_match is not None:
395
285
self.entry_group_state_changed_match = None
396
286
if self.group is not None:
397
287
self.group.Reset()
398
399
288
def add(self):
400
289
"""Derived from the Avahi example code"""
401
290
self.remove()
418
307
dbus.UInt16(self.port),
419
308
avahi.string_array_to_txt_array(self.TXT))
420
309
self.group.Commit()
421
422
310
def entry_group_state_changed(self, state, error):
423
311
"""Derived from the Avahi example code"""
424
312
logger.debug("Avahi entry group state change: %i", state)
425
313
426
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
315
logger.debug("Zeroconf service established.")
428
316
elif state == avahi.ENTRY_GROUP_COLLISION:
430
318
self.rename()
431
319
elif state == avahi.ENTRY_GROUP_FAILURE:
432
320
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
436
324
def cleanup(self):
437
325
"""Derived from the Avahi example code"""
438
326
if self.group is not None:
443
331
pass
444
332
self.group = None
445
333
self.remove()
446
447
334
def server_state_changed(self, state, error=None):
448
335
"""Derived from the Avahi example code"""
449
336
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
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" }
456
344
if state in bad_states:
457
345
if bad_states[state] is not None:
458
346
if error is None:
461
349
logger.error(bad_states[state] + ": %r", error)
462
350
self.cleanup()
463
351
elif state == avahi.SERVER_RUNNING:
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)
352
self.add()
476
353
else:
477
354
if error is None:
478
355
logger.debug("Unknown state: %r", state)
479
356
else:
480
357
logger.debug("Unknown state: %r: %r", state, error)
481
482
358
def activate(self):
483
359
"""Derived from the Avahi example code"""
484
360
if self.server is None:
488
364
follow_name_owner_changes=True),
489
365
avahi.DBUS_INTERFACE_SERVER)
490
366
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
367
self.server_state_changed)
492
368
self.server_state_changed(self.server.GetState())
493
369
494
495
370
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
371
def rename(self):
497
372
"""Add the new name to the syslog messages"""
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)))
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
502
378
return ret
503
379
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
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
817
386
class Client(object):
818
387
"""A representation of a client host served by this server.
819
388
820
389
Attributes:
821
390
approved: bool(); 'None' if not yet approved/disapproved
822
391
approval_delay: datetime.timedelta(); Time to wait for approval
824
393
checker: subprocess.Popen(); a running checker process used
825
394
to see if the client lives.
826
395
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
396
checker_callback_tag: a gobject event source tag, or None
828
397
checker_command: string; External command which is run to check
829
398
if client lives. %() expansions are done at
830
399
runtime with vars(self) as dict, so that for
831
400
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
401
checker_initiator_tag: a gobject event source tag, or None
833
402
created: datetime.datetime(); (UTC) object creation
834
403
client_structure: Object describing what attributes a client has
835
404
and is used for storing the client at exit
836
405
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
406
disable_initiator_tag: a gobject event source tag, or None
838
407
enabled: bool()
839
408
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
409
uniquely identify the client
843
410
host: string; available for use by the checker command
844
411
interval: datetime.timedelta(); How often to start a new checker
845
412
last_approval_request: datetime.datetime(); (UTC) or None
846
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
847
415
last_checker_status: integer between 0 and 255 reflecting exit
848
416
status of last checker. -1 reflects crashed
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
417
checker, or None.
852
418
last_enabled: datetime.datetime(); (UTC) or None
853
419
name: string; from the config file, used in log messages and
854
420
D-Bus identifiers
855
421
secret: bytestring; sent verbatim (over TLS) to client
856
422
timeout: datetime.timedelta(); How long from last_checked_ok
857
423
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
424
extended_timeout: extra long timeout when password has been sent
859
425
runtime_expansions: Allowed attributes for runtime expansion.
860
426
expires: datetime.datetime(); time (UTC) when a client will be
861
427
disabled, or None
862
server_settings: The server_settings dict from main()
863
428
"""
864
429
865
430
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
869
433
"last_enabled", "name", "timeout")
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):
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."""
937
454
self.name = name
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
455
if config is None:
456
config = {}
955
457
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
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(" ", ""))
957
463
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
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 = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
482
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
962
488
self.checker = None
963
489
self.checker_initiator_tag = None
964
490
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
965
495
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
966
497
self.current_checker_command = None
967
498
self.approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
968
501
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
973
511
if not attr.startswith("_")]
974
512
self.client_structure.append("client_structure")
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
513
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
978
518
if not name.startswith("_"):
979
519
self.client_structure.append(name)
980
520
981
521
# Send notice to process children that client state has changed
982
522
def send_changedstate(self):
983
523
with self.changedstate:
984
524
self.changedstate.notify_all()
985
525
986
526
def enable(self):
987
527
"""Start this client's checker and timeout hooks"""
988
528
if getattr(self, "enabled", False):
989
529
# Already enabled
990
530
return
531
self.send_changedstate()
991
532
self.expires = datetime.datetime.utcnow() + self.timeout
992
533
self.enabled = True
993
534
self.last_enabled = datetime.datetime.utcnow()
994
535
self.init_checker()
995
self.send_changedstate()
996
536
997
537
def disable(self, quiet=True):
998
538
"""Disable this client."""
999
539
if not getattr(self, "enabled", False):
1000
540
return False
1001
541
if not quiet:
542
self.send_changedstate()
543
if not quiet:
1002
544
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
1005
547
self.disable_initiator_tag = None
1006
548
self.expires = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
1009
551
self.checker_initiator_tag = None
1010
552
self.stop_checker()
1011
553
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
554
# Do not run this again if called by a gobject.timeout_add
1015
555
return False
1016
556
1017
557
def __del__(self):
1018
558
self.disable()
1019
559
1020
560
def init_checker(self):
1021
561
# Schedule a new checker to be started an 'interval' from now,
1022
562
# and every interval from then on.
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)
563
self.checker_initiator_tag = (gobject.timeout_add
564
(self.interval_milliseconds(),
565
self.start_checker))
1028
566
# Schedule a disable() when 'timeout' has passed
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)
567
self.disable_initiator_tag = (gobject.timeout_add
568
(self.timeout_milliseconds(),
569
self.disable))
1033
570
# Also start a new checker *right now*.
1034
571
self.start_checker()
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
572
573
def checker_callback(self, pid, condition, command):
1038
574
"""The checker has completed, so take appropriate actions."""
1039
575
self.checker_callback_tag = None
1040
576
self.checker = None
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
577
if os.WIFEXITED(condition):
578
self.last_checker_status = os.WEXITSTATUS(condition)
1048
579
if self.last_checker_status == 0:
1049
580
logger.info("Checker for %(name)s succeeded",
1050
581
vars(self))
1051
582
self.checked_ok()
1052
583
else:
1053
logger.info("Checker for %(name)s failed", vars(self))
584
logger.info("Checker for %(name)s failed",
585
vars(self))
1054
586
else:
1055
587
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
588
logger.warning("Checker for %(name)s crashed?",
1058
589
vars(self))
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."""
590
591
def checked_ok(self, timeout=None):
592
"""Bump up the timeout for this client.
593
594
This should only be called when the client has been seen,
595
alive and well.
596
"""
1070
597
if timeout is None:
1071
598
timeout = self.timeout
599
self.last_checked_ok = datetime.datetime.utcnow()
1072
600
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
601
gobject.source_remove(self.disable_initiator_tag)
1075
602
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
603
self.disable_initiator_tag = (gobject.timeout_add
604
(timedelta_to_milliseconds
605
(timeout), self.disable))
1078
606
self.expires = datetime.datetime.utcnow() + timeout
1079
607
1080
608
def need_approval(self):
1081
609
self.last_approval_request = datetime.datetime.utcnow()
1082
610
1083
611
def start_checker(self):
1084
612
"""Start a new checker subprocess if one is not running.
1085
613
1086
614
If a checker already exists, leave it running and do
1087
615
nothing."""
1088
616
# The reason for not killing a running checker is that if we
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
617
# did that, then if a checker (for some reason) started
618
# running slowly and taking more than 'interval' time, the
619
# client would inevitably timeout, since no checker would get
620
# a chance to run to completion. If we instead leave running
1093
621
# checkers alone, the checker would have to take more time
1094
622
# than 'timeout' for the client to be disabled, which is as it
1095
623
# should be.
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
624
625
# If a checker exists, make sure it is not a zombie
626
try:
627
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
628
except (AttributeError, OSError) as error:
629
if (isinstance(error, OSError)
630
and error.errno != errno.ECHILD):
631
raise error
632
else:
633
if pid:
634
logger.warning("Checker was a zombie")
635
gobject.source_remove(self.checker_callback_tag)
636
self.checker_callback(pid, status,
637
self.current_checker_command)
1101
638
# Start a new checker if needed
1102
639
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}
1107
640
try:
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
641
# In case checker_command has exactly one % operator
642
command = self.checker_command % self.host
643
except TypeError:
644
# Escape attributes for the shell
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
653
try:
654
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
658
return True # Try again later
1114
659
self.current_checker_command = command
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
660
try:
661
logger.info("Starting checker %r for %s",
662
command, self.name)
663
# We don't need to redirect stdout and stderr, since
664
# in normal mode, that is already done by daemon(),
665
# and in debug mode we don't want to. (Stdin is
666
# always replaced by /dev/null.)
667
self.checker = subprocess.Popen(command,
668
close_fds=True,
669
shell=True, cwd="/")
670
self.checker_callback_tag = (gobject.child_watch_add
671
(self.checker.pid,
672
self.checker_callback,
673
data=command))
674
# The checker may have completed before the gobject
675
# watch was added. Check for this.
676
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
677
if pid:
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status, command)
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
682
error)
683
# Re-run this periodically if run by gobject.timeout_add
1141
684
return True
1142
685
1143
686
def stop_checker(self):
1144
687
"""Force the checker process, if any, to stop."""
1145
688
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
689
gobject.source_remove(self.checker_callback_tag)
1147
690
self.checker_callback_tag = None
1148
691
if getattr(self, "checker", None) is None:
1149
692
return
1150
693
logger.debug("Stopping checker for %(name)s", vars(self))
1151
self.checker.terminate()
694
try:
695
os.kill(self.checker.pid, signal.SIGTERM)
696
#time.sleep(0.5)
697
#if self.checker.poll() is None:
698
# os.kill(self.checker.pid, signal.SIGKILL)
699
except OSError as error:
700
if error.errno != errno.ESRCH: # No such process
701
raise
1152
702
self.checker = None
1153
703
1154
704
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
1159
707
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
708
become properties on the D-Bus.
1161
709
1162
710
The decorated method will be called with no arguments by "Get"
1163
711
and with one argument by "Set".
1164
712
1165
713
The parameters, where they are supported, are the same as
1166
714
dbus.service.method, except there is only "signature", since the
1167
715
type from Get() and the type sent to Set() is the same.
1170
718
# "Set" method, so we fail early here:
1171
719
if byte_arrays and signature != "ay":
1172
720
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1174
721
" signature %r" % signature)
1175
722
def decorator(func):
1176
723
func._dbus_is_property = True
1177
724
func._dbus_interface = dbus_interface
1180
727
func._dbus_name = func.__name__
1181
728
if func._dbus_name.endswith("_dbus_property"):
1182
729
func._dbus_name = func._dbus_name[:-14]
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
730
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
731
return func
1229
732
return decorator
1230
733
1231
734
1232
735
class DBusPropertyException(dbus.exceptions.DBusException):
1233
736
"""A base class for D-Bus property-related exceptions
1234
737
"""
1235
pass
738
def __unicode__(self):
739
return unicode(str(self))
1236
740
1237
741
1238
742
class DBusPropertyAccessException(DBusPropertyException):
1247
751
pass
1248
752
1249
753
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):
754
class DBusObjectWithProperties(dbus.service.Object):
1340
755
"""A D-Bus object with properties.
1341
756
1342
757
Classes inheriting from this can use the dbus_service_property
1343
758
decorator to expose methods as D-Bus properties. It exposes the
1344
759
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
760
"""
1346
761
762
@staticmethod
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
765
766
def _get_all_dbus_properties(self):
767
"""Returns a generator of (name, attribute) pairs
768
"""
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
771
for name, prop in
772
inspect.getmembers(cls, self._is_dbus_property))
773
1347
774
def _get_dbus_property(self, interface_name, property_name):
1348
775
"""Returns a bound method if one exists which is a D-Bus
1349
776
property with the specified name and interface.
1350
777
"""
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
1354
781
if (value._dbus_name == property_name
1355
782
and value._dbus_interface == interface_name):
1356
783
return value.__get__(self)
1357
784
1358
785
# No such property
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",
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
788
+ property_name)
789
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
791
out_signature="v")
1374
792
def Get(self, interface_name, property_name):
1375
793
"""Standard D-Bus property Get() method, see D-Bus standard.
1381
799
if not hasattr(value, "variant_level"):
1382
800
return value
1383
801
return type(value)(value, variant_level=value.variant_level+1)
1384
802
1385
803
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
804
def Set(self, interface_name, property_name, value):
1387
805
"""Standard D-Bus property Set() method, see D-Bus standard.
1393
811
# The byte_arrays option is not supported yet on
1394
812
# signatures other than "ay".
1395
813
if prop._dbus_signature != "ay":
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))
814
raise ValueError
815
value = dbus.ByteArray(''.join(unichr(byte)
816
for byte in value))
1401
817
prop(value)
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
820
out_signature="a{sv}")
1406
821
def GetAll(self, interface_name):
1407
822
"""Standard D-Bus property GetAll() method, see D-Bus
1408
823
standard.
1409
824
1410
825
Note: Will not include properties with access="write".
1411
826
"""
1412
827
properties = {}
1413
for name, prop in self._get_all_dbus_things("property"):
828
for name, prop in self._get_all_dbus_properties():
1414
829
if (interface_name
1415
830
and interface_name != prop._dbus_interface):
1416
831
# Interface non-empty but did not match
1422
837
if not hasattr(value, "variant_level"):
1423
838
properties[name] = value
1424
839
continue
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
1427
842
return dbus.Dictionary(properties, signature="sv")
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
843
1437
844
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
845
out_signature="s",
1439
846
path_keyword='object_path',
1440
847
connection_keyword='connection')
1441
848
def Introspect(self, object_path, connection):
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
849
"""Standard D-Bus method, overloaded to insert property tags.
1445
850
"""
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
851
xmlstring = dbus.service.Object.Introspect(self, object_path,
852
connection)
1449
853
try:
1450
854
document = xml.dom.minidom.parseString(xmlstring)
1451
1452
855
def make_tag(document, name, prop):
1453
856
e = document.createElement("property")
1454
857
e.setAttribute("name", name)
1455
858
e.setAttribute("type", prop._dbus_signature)
1456
859
e.setAttribute("access", prop._dbus_access)
1457
860
return e
1458
1459
861
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
1461
862
for tag in (make_tag(document, name, prop)
1462
863
for name, prop
1463
in self._get_all_dbus_things("property")
864
in self._get_all_dbus_properties()
1464
865
if prop._dbus_interface
1465
866
== if_tag.getAttribute("name")):
1466
867
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)
1483
868
# Add the names to the return values for the
1484
869
# "org.freedesktop.DBus.Properties" methods
1485
870
if (if_tag.getAttribute("name")
1500
885
except (AttributeError, xml.dom.DOMException,
1501
886
xml.parsers.expat.ExpatError) as error:
1502
887
logger.error("Failed to override Introspection method",
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):
888
error)
889
return xmlstring
890
891
892
def datetime_to_dbus (dt, variant_level=0):
1579
893
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
894
if dt is None:
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).
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
1607
904
"""
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):
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
1616
912
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
913
# with the wrong interface name
1618
914
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
1621
917
continue
1622
918
# Create an alternate D-Bus interface name based on
1623
919
# the current name
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
1627
923
# Is this a D-Bus signal?
1628
924
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
1633
928
zip(attribute.func_code.co_freevars,
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)
929
attribute.__closure__))["func"]
930
.cell_contents)
1641
931
# Create a new, but exactly alike, function
1642
932
# object, and decorate it to be a new D-Bus signal
1643
933
# with the alternate D-Bus interface name
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
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
1655
943
# Define a creator of a function to call both the
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
1659
946
def fixscope(func1, func2):
1660
947
"""This function is a scope container to pass
1661
948
func1 and func2 to the "call_both" function
1662
949
outside of its arguments"""
1663
1664
@functools.wraps(func2)
1665
950
def call_both(*args, **kwargs):
1666
951
"""This function will emit two D-Bus
1667
952
signals by calling func1 and func2"""
1668
953
func1(*args, **kwargs)
1669
954
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
1676
955
return call_both
1677
956
# Create the "call_both" function and add it to
1678
957
# the class
1679
attr[attrname] = fixscope(attribute, new_function)
958
attr[attrname] = fixscope(attribute,
959
new_function)
1680
960
# Is this a D-Bus method?
1681
961
elif getattr(attribute, "_dbus_is_method", False):
1682
962
# Create a new, but exactly alike, function
1683
963
# object. Decorate it to be a new D-Bus method
1684
964
# with the alternate D-Bus interface name. Add it
1685
965
# to the class.
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
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
1698
976
# Is this a D-Bus property?
1699
977
elif getattr(attribute, "_dbus_is_property", False):
1700
978
# Create a new, but exactly alike, function
1701
979
# object, and decorate it to be a new D-Bus
1702
980
# property with the alternate D-Bus interface
1703
981
# name. Add it to the class.
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"})
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
1756
998
class ClientDBus(Client, DBusObjectWithProperties):
1757
999
"""A Client class using D-Bus
1758
1000
1759
1001
Attributes:
1760
1002
dbus_object_path: dbus.ObjectPath
1761
1003
bus: dbus.SystemBus()
1762
1004
"""
1763
1005
1764
1006
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1007
+ ("dbus_object_path",))
1008
1769
1009
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1010
1011
def __init__(self, bus = None, *args, **kwargs):
1772
1012
self.bus = bus
1773
1013
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
1774
1016
# Only now, when this client is initialized, can it show up on
1775
1017
# the D-Bus
1776
client_object_name = str(self.name).translate(
1018
client_object_name = unicode(self.name).translate(
1777
1019
{ord("."): ord("_"),
1778
1020
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1021
self.dbus_object_path = (dbus.ObjectPath
1022
("/clients/" + client_object_name))
1781
1023
DBusObjectWithProperties.__init__(self, self.bus,
1782
1024
self.dbus_object_path)
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):
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
1789
1029
""" Modify a variable so that it's a property which announces
1790
1030
its changes to DBus.
1791
1031
1792
1032
transform_fun: Function that takes a value and a variant_level
1793
1033
and transforms it to a D-Bus type.
1794
1034
dbus_name: D-Bus name of the variable
1796
1036
to the D-Bus. Default: no transform
1797
1037
variant_level: D-Bus variant level. Default: 1
1798
1038
"""
1799
attrname = "_{}".format(dbus_name)
1800
1039
attrname = "_{0}".format(dbus_name)
1801
1040
def setter(self, value):
1802
1041
if hasattr(self, "dbus_object_path"):
1803
1042
if (not hasattr(self, attrname) or
1804
1043
type_func(getattr(self, attrname, None))
1805
1044
!= type_func(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())
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_value)
1821
1050
setattr(self, attrname, value)
1822
1051
1823
1052
return property(lambda self: getattr(self, attrname), setter)
1824
1053
1054
1825
1055
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
1056
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
1057
"ApprovalPending",
1828
type_func=bool)
1058
type_func = bool)
1829
1059
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
1060
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
1061
"LastEnabled")
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1835
1065
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
1066
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1839
1067
last_approval_request = notifychangeproperty(
1840
1068
datetime_to_dbus, "LastApprovalRequest")
1841
1069
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
1070
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
timedelta_to_milliseconds)
1846
1075
approval_duration = notifychangeproperty(
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = timedelta_to_milliseconds)
1849
1078
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
timedelta_to_milliseconds)
1853
1082
extended_timeout = notifychangeproperty(
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
dbus.UInt16, "ExtendedTimeout",
1084
type_func = timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
timedelta_to_milliseconds)
1859
1089
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1090
1863
1091
del notifychangeproperty
1864
1092
1865
1093
def __del__(self, *args, **kwargs):
1866
1094
try:
1867
1095
self.remove_from_connection()
1870
1098
if hasattr(DBusObjectWithProperties, "__del__"):
1871
1099
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
1100
Client.__del__(self, *args, **kwargs)
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:
1101
1102
def checker_callback(self, pid, condition, command,
1103
*args, **kwargs):
1104
self.checker_callback_tag = None
1105
self.checker = None
1106
if os.WIFEXITED(condition):
1107
exitstatus = os.WEXITSTATUS(condition)
1881
1108
# Emit D-Bus signal
1882
1109
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1110
dbus.Int64(condition),
1885
1111
dbus.String(command))
1886
1112
else:
1887
1113
# Emit D-Bus signal
1888
1114
self.CheckerCompleted(dbus.Int16(-1),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1115
dbus.Int64(condition),
1893
1116
dbus.String(command))
1894
return ret
1895
1117
1118
return Client.checker_callback(self, pid, condition, command,
1119
*args, **kwargs)
1120
1896
1121
def start_checker(self, *args, **kwargs):
1897
old_checker_pid = getattr(self.checker, "pid", None)
1122
old_checker = self.checker
1123
if self.checker is not None:
1124
old_checker_pid = self.checker.pid
1125
else:
1126
old_checker_pid = None
1898
1127
r = Client.start_checker(self, *args, **kwargs)
1899
1128
# Only if new checker process was started
1900
1129
if (self.checker is not None
1902
1131
# Emit D-Bus signal
1903
1132
self.CheckerStarted(self.current_checker_command)
1904
1133
return r
1905
1134
1906
1135
def _reset_approved(self):
1907
1136
self.approved = None
1908
1137
return False
1909
1138
1910
1139
def approve(self, value=True):
1140
self.send_changedstate()
1911
1141
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1142
gobject.timeout_add(timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
1146
1147
## D-Bus methods, signals & properties
1148
_interface = "se.recompile.Mandos.Client"
1149
1150
## Signals
1151
1922
1152
# CheckerCompleted - signal
1923
1153
@dbus.service.signal(_interface, signature="nxs")
1924
1154
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
1155
"D-Bus signal"
1926
1156
pass
1927
1157
1928
1158
# CheckerStarted - signal
1929
1159
@dbus.service.signal(_interface, signature="s")
1930
1160
def CheckerStarted(self, command):
1931
1161
"D-Bus signal"
1932
1162
pass
1933
1163
1934
1164
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1165
@dbus.service.signal(_interface, signature="sv")
1937
1166
def PropertyChanged(self, property, value):
1938
1167
"D-Bus signal"
1939
1168
pass
1940
1169
1941
1170
# GotSecret - signal
1942
1171
@dbus.service.signal(_interface)
1943
1172
def GotSecret(self):
1946
1175
server to mandos-client
1947
1176
"""
1948
1177
pass
1949
1178
1950
1179
# Rejected - signal
1951
1180
@dbus.service.signal(_interface, signature="s")
1952
1181
def Rejected(self, reason):
1953
1182
"D-Bus signal"
1954
1183
pass
1955
1184
1956
1185
# NeedApproval - signal
1957
1186
@dbus.service.signal(_interface, signature="tb")
1958
1187
def NeedApproval(self, timeout, default):
1959
1188
"D-Bus signal"
1960
1189
return self.need_approval()
1961
1962
# Methods
1963
1190
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
1197
pass
1198
1199
## Methods
1200
1964
1201
# Approve - method
1965
1202
@dbus.service.method(_interface, in_signature="b")
1966
1203
def Approve(self, value):
1967
1204
self.approve(value)
1968
1205
1969
1206
# CheckedOK - method
1970
1207
@dbus.service.method(_interface)
1971
1208
def CheckedOK(self):
1972
1209
self.checked_ok()
1973
1210
1974
1211
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1212
@dbus.service.method(_interface)
1977
1213
def Enable(self):
1978
1214
"D-Bus method"
1979
1215
self.enable()
1980
1216
1981
1217
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
1218
@dbus.service.method(_interface)
1984
1219
def StartChecker(self):
1985
1220
"D-Bus method"
1986
1221
self.start_checker()
1987
1222
1988
1223
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1224
@dbus.service.method(_interface)
1991
1225
def Disable(self):
1992
1226
"D-Bus method"
1993
1227
self.disable()
1994
1228
1995
1229
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1230
@dbus.service.method(_interface)
1998
1231
def StopChecker(self):
1999
1232
self.stop_checker()
2000
2001
# Properties
2002
1233
1234
## Properties
1235
2003
1236
# ApprovalPending - property
2004
1237
@dbus_service_property(_interface, signature="b", access="read")
2005
1238
def ApprovalPending_dbus_property(self):
2006
1239
return dbus.Boolean(bool(self.approvals_pending))
2007
1240
2008
1241
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2010
signature="b",
1242
@dbus_service_property(_interface, signature="b",
2011
1243
access="readwrite")
2012
1244
def ApprovedByDefault_dbus_property(self, value=None):
2013
1245
if value is None: # get
2014
1246
return dbus.Boolean(self.approved_by_default)
2015
1247
self.approved_by_default = bool(value)
2016
1248
2017
1249
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2019
signature="t",
1250
@dbus_service_property(_interface, signature="t",
2020
1251
access="readwrite")
2021
1252
def ApprovalDelay_dbus_property(self, value=None):
2022
1253
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1254
return dbus.UInt64(self.approval_delay_milliseconds())
2025
1255
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
1256
2027
1257
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2029
signature="t",
1258
@dbus_service_property(_interface, signature="t",
2030
1259
access="readwrite")
2031
1260
def ApprovalDuration_dbus_property(self, value=None):
2032
1261
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1262
return dbus.UInt64(timedelta_to_milliseconds(
1263
self.approval_duration))
2035
1264
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
1265
2037
1266
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1267
@dbus_service_property(_interface, signature="s", access="read")
2041
1268
def Name_dbus_property(self):
2042
1269
return dbus.String(self.name)
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
1270
2051
1271
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1272
@dbus_service_property(_interface, signature="s", access="read")
2055
1273
def Fingerprint_dbus_property(self):
2056
1274
return dbus.String(self.fingerprint)
2057
1275
2058
1276
# Host - property
2059
@dbus_service_property(_interface,
2060
signature="s",
1277
@dbus_service_property(_interface, signature="s",
2061
1278
access="readwrite")
2062
1279
def Host_dbus_property(self, value=None):
2063
1280
if value is None: # get
2064
1281
return dbus.String(self.host)
2065
self.host = str(value)
2066
1282
self.host = value
1283
2067
1284
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1285
@dbus_service_property(_interface, signature="s", access="read")
2071
1286
def Created_dbus_property(self):
2072
1287
return datetime_to_dbus(self.created)
2073
1288
2074
1289
# LastEnabled - property
2075
1290
@dbus_service_property(_interface, signature="s", access="read")
2076
1291
def LastEnabled_dbus_property(self):
2077
1292
return datetime_to_dbus(self.last_enabled)
2078
1293
2079
1294
# Enabled - property
2080
@dbus_service_property(_interface,
2081
signature="b",
1295
@dbus_service_property(_interface, signature="b",
2082
1296
access="readwrite")
2083
1297
def Enabled_dbus_property(self, value=None):
2084
1298
if value is None: # get
2087
1301
self.enable()
2088
1302
else:
2089
1303
self.disable()
2090
1304
2091
1305
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2093
signature="s",
1306
@dbus_service_property(_interface, signature="s",
2094
1307
access="readwrite")
2095
1308
def LastCheckedOK_dbus_property(self, value=None):
2096
1309
if value is not None:
2097
1310
self.checked_ok()
2098
1311
return
2099
1312
return datetime_to_dbus(self.last_checked_ok)
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
1313
2106
1314
# Expires - property
2107
1315
@dbus_service_property(_interface, signature="s", access="read")
2108
1316
def Expires_dbus_property(self):
2109
1317
return datetime_to_dbus(self.expires)
2110
1318
2111
1319
# LastApprovalRequest - property
2112
1320
@dbus_service_property(_interface, signature="s", access="read")
2113
1321
def LastApprovalRequest_dbus_property(self):
2114
1322
return datetime_to_dbus(self.last_approval_request)
2115
1323
2116
1324
# Timeout - property
2117
@dbus_service_property(_interface,
2118
signature="t",
1325
@dbus_service_property(_interface, signature="t",
2119
1326
access="readwrite")
2120
1327
def Timeout_dbus_property(self, value=None):
2121
1328
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1329
return dbus.UInt64(self.timeout_milliseconds())
2124
1330
self.timeout = datetime.timedelta(0, 0, 0, value)
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
1331
if getattr(self, "disable_initiator_tag", None) is None:
1332
return
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1336
self.expires = None
1337
time_to_die = timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
1342
if time_to_die <= 0:
1343
# The timeout has passed
1344
self.disable()
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
1351
2141
1352
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
1353
@dbus_service_property(_interface, signature="t",
2144
1354
access="readwrite")
2145
1355
def ExtendedTimeout_dbus_property(self, value=None):
2146
1356
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
2149
1358
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
1359
2151
1360
# Interval - property
2152
@dbus_service_property(_interface,
2153
signature="t",
1361
@dbus_service_property(_interface, signature="t",
2154
1362
access="readwrite")
2155
1363
def Interval_dbus_property(self, value=None):
2156
1364
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1365
return dbus.UInt64(self.interval_milliseconds())
2158
1366
self.interval = datetime.timedelta(0, 0, 0, value)
2159
1367
if getattr(self, "checker_initiator_tag", None) is None:
2160
1368
return
2161
1369
if self.enabled:
2162
1370
# 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
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1375
2168
1376
# Checker - property
2169
@dbus_service_property(_interface,
2170
signature="s",
1377
@dbus_service_property(_interface, signature="s",
2171
1378
access="readwrite")
2172
1379
def Checker_dbus_property(self, value=None):
2173
1380
if value is None: # get
2174
1381
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2176
1382
self.checker_command = value
1383
2177
1384
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2179
signature="b",
1385
@dbus_service_property(_interface, signature="b",
2180
1386
access="readwrite")
2181
1387
def CheckerRunning_dbus_property(self, value=None):
2182
1388
if value is None: # get
2185
1391
self.start_checker()
2186
1392
else:
2187
1393
self.stop_checker()
2188
1394
2189
1395
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
1396
@dbus_service_property(_interface, signature="o", access="read")
2194
1397
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1398
return self.dbus_object_path # is already a dbus.ObjectPath
1399
2197
1400
# Secret = property
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)
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
2205
1403
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
2207
1404
self.secret = str(value)
1405
2208
1406
del _interface
2209
1407
2210
1408
2211
1409
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1410
def __init__(self, child_pipe, fpr, address):
2213
1411
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
1412
self._pipe.send(('init', fpr, address))
2215
1413
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2217
1414
raise KeyError()
1415
2218
1416
def __getattribute__(self, name):
2219
1417
if name == '_pipe':
2220
1418
return super(ProxyClient, self).__getattribute__(name)
2223
1421
if data[0] == 'data':
2224
1422
return data[1]
2225
1423
if data[0] == 'function':
2226
2227
1424
def func(*args, **kwargs):
2228
1425
self._pipe.send(('funcall', name, args, kwargs))
2229
1426
return self._pipe.recv()[1]
2230
2231
1427
return func
2232
1428
2233
1429
def __setattr__(self, name, value):
2234
1430
if name == '_pipe':
2235
1431
return super(ProxyClient, self).__setattr__(name, value)
2236
1432
self._pipe.send(('setattr', name, value))
2237
1433
2238
1434
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
2239
1439
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1440
"""A class to handle client connections.
2241
1441
2242
1442
Instantiated once for each connection to handle it.
2243
1443
Note: This will run in its own forked process."""
2244
1444
2245
1445
def handle(self):
2246
1446
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1447
logger.info("TCP connection from: %s",
2248
str(self.client_address))
1448
unicode(self.client_address))
2249
1449
logger.debug("Pipe FD: %d",
2250
1450
self.server.child_pipe.fileno())
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"))
1451
1452
session = (gnutls.connection
1453
.ClientSession(self.request,
1454
gnutls.connection
1455
.X509Credentials()))
1456
1457
# Note: gnutls.connection.X509Credentials is really a
1458
# generic GnuTLS certificate credentials object so long as
1459
# no X.509 keys are added to it. Therefore, we can use it
1460
# here despite using OpenPGP certificates.
1461
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1465
# "+DHE-DSS"))
2258
1466
# Use a fallback default, since this MUST be set.
2259
1467
priority = self.server.gnutls_priority
2260
1468
if priority is None:
2261
1469
priority = "NORMAL"
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1470
(gnutls.library.functions
1471
.gnutls_priority_set_direct(session._c_object,
1472
priority, None))
1473
2266
1474
# Start communication using the Mandos protocol
2267
1475
# Get protocol number
2268
1476
line = self.request.makefile().readline()
2269
1477
logger.debug("Protocol version: %r", line)
2270
1478
try:
2271
1479
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
1480
raise RuntimeError
2273
1481
except (ValueError, IndexError, RuntimeError) as error:
2274
1482
logger.error("Unknown protocol version: %s", error)
2275
1483
return
2276
1484
2277
1485
# Start GnuTLS connection
2278
1486
try:
2279
1487
session.handshake()
2280
except gnutls.Error as error:
1488
except gnutls.errors.GNUTLSError as error:
2281
1489
logger.warning("Handshake failed: %s", error)
2282
1490
# Do not run session.bye() here: the session is not
2283
1491
# established. Just abandon the request.
2284
1492
return
2285
1493
logger.debug("Handshake succeeded")
2286
1494
2287
1495
approval_required = False
2288
1496
try:
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,
1497
try:
1498
fpr = self.fingerprint(self.peer_certificate
1499
(session))
1500
except (TypeError,
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1503
return
1504
logger.debug("Fingerprint: %s", fpr)
1505
1506
try:
1507
client = ProxyClient(child_pipe, fpr,
2311
1508
self.client_address)
2312
1509
except KeyError:
2313
1510
return
2314
1511
1512
if self.server.use_dbus:
1513
# Emit D-Bus signal
1514
client.NewRequest(str(self.client_address))
1515
2315
1516
if client.approval_delay:
2316
1517
delay = client.approval_delay
2317
1518
client.approvals_pending += 1
2318
1519
approval_required = True
2319
1520
2320
1521
while True:
2321
1522
if not client.enabled:
2322
1523
logger.info("Client %s is disabled",
2323
client.name)
1524
client.name)
2324
1525
if self.server.use_dbus:
2325
1526
# Emit D-Bus signal
2326
1527
client.Rejected("Disabled")
2327
1528
return
2328
1529
2329
1530
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1531
#We are approved or approval is disabled
2331
1532
break
2332
1533
elif client.approved is None:
2333
1534
logger.info("Client %s needs approval",
2335
1536
if self.server.use_dbus:
2336
1537
# Emit D-Bus signal
2337
1538
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1539
client.approval_delay_milliseconds(),
1540
client.approved_by_default)
2340
1541
else:
2341
1542
logger.warning("Client %s was not approved",
2342
1543
client.name)
2344
1545
# Emit D-Bus signal
2345
1546
client.Rejected("Denied")
2346
1547
return
2347
2348
# wait until timeout or approved
1548
1549
#wait until timeout or approved
2349
1550
time = datetime.datetime.now()
2350
1551
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
1552
(client.changedstate.wait
1553
(float(client.timedelta_to_milliseconds(delay)
1554
/ 1000)))
2352
1555
client.changedstate.release()
2353
1556
time2 = datetime.datetime.now()
2354
1557
if (time2 - time) >= delay:
2364
1567
break
2365
1568
else:
2366
1569
delay -= time2 - time
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
1570
1571
sent_size = 0
1572
while sent_size < len(client.secret):
1573
try:
1574
sent = session.send(client.secret[sent_size:])
1575
except gnutls.errors.GNUTLSError as error:
1576
logger.warning("gnutls send failed")
1577
return
1578
logger.debug("Sent: %d, remaining: %d",
1579
sent, len(client.secret)
1580
- (sent_size + sent))
1581
sent_size += sent
1582
2375
1583
logger.info("Sending secret to %s", client.name)
2376
1584
# bump the timeout using extended_timeout
2377
client.bump_timeout(client.extended_timeout)
1585
client.checked_ok(client.extended_timeout)
2378
1586
if self.server.use_dbus:
2379
1587
# Emit D-Bus signal
2380
1588
client.GotSecret()
2381
1589
2382
1590
finally:
2383
1591
if approval_required:
2384
1592
client.approvals_pending -= 1
2385
1593
try:
2386
1594
session.bye()
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1595
except gnutls.errors.GNUTLSError as error:
1596
logger.warning("GnuTLS bye failed")
1597
2391
1598
@staticmethod
2392
1599
def peer_certificate(session):
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""
1600
"Return the peer's OpenPGP certificate as a bytestring"
1601
# If not an OpenPGP certificate...
1602
if (gnutls.library.functions
1603
.gnutls_certificate_type_get(session._c_object)
1604
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1605
# ...do the normal thing
1606
return session.peer_certificate
2409
1607
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
1608
cert_list = (gnutls.library.functions
1609
.gnutls_certificate_get_peers
2411
1610
(session._c_object, ctypes.byref(list_size)))
2412
1611
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
1612
raise gnutls.errors.GNUTLSError("error getting peer"
1613
" certificate")
2414
1614
if list_size.value == 0:
2415
1615
return None
2416
1616
cert = cert_list[0]
2417
1617
return ctypes.string_at(cert.data, cert.size)
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
1618
2453
1619
@staticmethod
2454
1620
def fingerprint(openpgp):
2455
1621
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1622
# New GnuTLS "datum" with the OpenPGP public key
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)))
1623
datum = (gnutls.library.types
1624
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1625
ctypes.POINTER
1626
(ctypes.c_ubyte)),
1627
ctypes.c_uint(len(openpgp))))
2461
1628
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1629
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1630
(gnutls.library.functions
1631
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1632
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1633
(gnutls.library.functions
1634
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1635
gnutls.library.constants
1636
.GNUTLS_OPENPGP_FMT_RAW))
2467
1637
# Verify the self signature in the key
2468
1638
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1639
(gnutls.library.functions
1640
.gnutls_openpgp_crt_verify_self(crt, 0,
1641
ctypes.byref(crtverify)))
2471
1642
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1643
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1644
raise (gnutls.errors.CertificateSecurityError
1645
("Verify failed"))
2475
1646
# New buffer for the fingerprint
2476
1647
buf = ctypes.create_string_buffer(20)
2477
1648
buf_len = ctypes.c_size_t()
2478
1649
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1650
(gnutls.library.functions
1651
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1652
ctypes.byref(buf_len)))
2481
1653
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
1654
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1655
# Convert the buffer to a Python bytestring
2484
1656
fpr = ctypes.string_at(buf, buf_len.value)
2485
1657
# Convert the bytestring to hexadecimal notation
2489
1661
2490
1662
class MultiprocessingMixIn(object):
2491
1663
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2493
1664
def sub_process_main(self, request, address):
2494
1665
try:
2495
1666
self.finish_request(request, address)
2496
except Exception:
1667
except:
2497
1668
self.handle_error(request, address)
2498
1669
self.close_request(request)
2499
1670
2500
1671
def process_request(self, request, address):
2501
1672
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1673
proc = multiprocessing.Process(target = self.sub_process_main,
1674
args = (request,
1675
address))
2504
1676
proc.start()
2505
1677
return proc
2506
1678
2507
1679
2508
1680
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1681
""" adds a pipe to the MixIn """
2510
2511
1682
def process_request(self, request, client_address):
2512
1683
"""Overrides and wraps the original process_request().
2513
1684
2514
1685
This function creates a new pipe in self.pipe
2515
1686
"""
2516
1687
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1688
2518
1689
proc = MultiprocessingMixIn.process_request(self, request,
2519
1690
client_address)
2520
1691
self.child_pipe.close()
2521
1692
self.add_pipe(parent_pipe, proc)
2522
1693
2523
1694
def add_pipe(self, parent_pipe, proc):
2524
1695
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
1696
raise NotImplementedError
2526
1697
2527
1698
2528
1699
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1700
socketserver.TCPServer, object):
2530
1701
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
1702
2532
1703
Attributes:
2533
1704
enabled: Boolean; whether this server is activated yet
2534
1705
interface: None or a network interface name (string)
2535
1706
use_ipv6: Boolean; to use IPv6 or not
2536
1707
"""
2537
2538
1708
def __init__(self, server_address, RequestHandlerClass,
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
"""
1709
interface=None, use_ipv6=True):
2545
1710
self.interface = interface
2546
1711
if use_ipv6:
2547
1712
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.
2575
1713
socketserver.TCPServer.__init__(self, server_address,
2576
1714
RequestHandlerClass)
2577
2578
1715
def server_bind(self):
2579
1716
"""This overrides the normal server_bind() function
2580
1717
to bind to an interface if one was specified, and also NOT to
2581
1718
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
1719
if self.interface is not None:
2584
1720
if SO_BINDTODEVICE is None:
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
1721
logger.error("SO_BINDTODEVICE does not exist;"
1722
" cannot bind to interface %s",
1723
self.interface)
1724
else:
1725
try:
1726
self.socket.setsockopt(socket.SOL_SOCKET,
1727
SO_BINDTODEVICE,
1728
str(self.interface
1729
+ '\0'))
1730
except socket.error as error:
1731
if error[0] == errno.EPERM:
1732
logger.error("No permission to"
1733
" bind to interface %s",
1734
self.interface)
1735
elif error[0] == errno.ENOPROTOOPT:
1736
logger.error("SO_BINDTODEVICE not available;"
1737
" cannot bind to interface %s",
1738
self.interface)
1739
else:
1740
raise
2606
1741
# Only bind(2) the socket if we really need to.
2607
1742
if self.server_address[0] or self.server_address[1]:
2608
1743
if not self.server_address[0]:
2609
1744
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
1745
any_address = "::" # in6addr_any
2611
1746
else:
2612
any_address = "0.0.0.0" # INADDR_ANY
1747
any_address = socket.INADDR_ANY
2613
1748
self.server_address = (any_address,
2614
1749
self.server_address[1])
2615
1750
elif not self.server_address[1]:
2616
self.server_address = (self.server_address[0], 0)
1751
self.server_address = (self.server_address[0],
1752
0)
2617
1753
# if self.interface:
2618
1754
# self.server_address = (self.server_address[0],
2619
1755
# 0, # port
2625
1761
2626
1762
class MandosServer(IPv6_TCPServer):
2627
1763
"""Mandos server.
2628
1764
2629
1765
Attributes:
2630
1766
clients: set of Client objects
2631
1767
gnutls_priority GnuTLS priority string
2632
1768
use_dbus: Boolean; to emit D-Bus signals or not
2633
2634
Assumes a GLib.MainLoop event loop.
1769
1770
Assumes a gobject.MainLoop event loop.
2635
1771
"""
2636
2637
1772
def __init__(self, server_address, RequestHandlerClass,
2638
interface=None,
2639
use_ipv6=True,
2640
clients=None,
2641
gnutls_priority=None,
2642
use_dbus=True,
2643
socketfd=None):
1773
interface=None, use_ipv6=True, clients=None,
1774
gnutls_priority=None, use_dbus=True):
2644
1775
self.enabled = False
2645
1776
self.clients = clients
2646
1777
if self.clients is None:
2649
1780
self.gnutls_priority = gnutls_priority
2650
1781
IPv6_TCPServer.__init__(self, server_address,
2651
1782
RequestHandlerClass,
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
1783
interface = interface,
1784
use_ipv6 = use_ipv6)
2656
1785
def server_activate(self):
2657
1786
if self.enabled:
2658
1787
return socketserver.TCPServer.server_activate(self)
2659
1788
2660
1789
def enable(self):
2661
1790
self.enabled = True
2662
1791
2663
1792
def add_pipe(self, parent_pipe, proc):
2664
1793
# Call "handle_ipc" for both data and EOF events
2665
GLib.io_add_watch(
2666
parent_pipe.fileno(),
2667
GLib.IO_IN | GLib.IO_HUP,
2668
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2672
def handle_ipc(self, source, condition,
2673
parent_pipe=None,
2674
proc=None,
2675
client_object=None):
1794
gobject.io_add_watch(parent_pipe.fileno(),
1795
gobject.IO_IN | gobject.IO_HUP,
1796
functools.partial(self.handle_ipc,
1797
parent_pipe =
1798
parent_pipe,
1799
proc = proc))
1800
1801
def handle_ipc(self, source, condition, parent_pipe=None,
1802
proc = None, client_object=None):
1803
condition_names = {
1804
gobject.IO_IN: "IN", # There is data to read.
1805
gobject.IO_OUT: "OUT", # Data can be written (without
1806
# blocking).
1807
gobject.IO_PRI: "PRI", # There is urgent data to read.
1808
gobject.IO_ERR: "ERR", # Error condition.
1809
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1810
# broken, usually for pipes and
1811
# sockets).
1812
}
1813
conditions_string = ' | '.join(name
1814
for cond, name in
1815
condition_names.iteritems()
1816
if cond & condition)
2676
1817
# error, or the other end of multiprocessing.Pipe has closed
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1818
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2678
1819
# Wait for other process to exit
2679
1820
proc.join()
2680
1821
return False
2681
1822
2682
1823
# Read a request from the child
2683
1824
request = parent_pipe.recv()
2684
1825
command = request[0]
2685
1826
2686
1827
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
1828
fpr = request[1]
1829
address = request[2]
1830
1831
for c in self.clients.itervalues():
1832
if c.fingerprint == fpr:
2698
1833
client = c
2699
1834
break
2700
1835
else:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
1836
logger.info("Client not found for fingerprint: %s, ad"
1837
"dress: %s", fpr, address)
2703
1838
if self.use_dbus:
2704
1839
# Emit D-Bus signal
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
1840
mandos_dbus_service.ClientNotFound(fpr,
2706
1841
address[0])
2707
1842
parent_pipe.send(False)
2708
1843
return False
2709
2710
GLib.io_add_watch(
2711
parent_pipe.fileno(),
2712
GLib.IO_IN | GLib.IO_HUP,
2713
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
1844
1845
gobject.io_add_watch(parent_pipe.fileno(),
1846
gobject.IO_IN | gobject.IO_HUP,
1847
functools.partial(self.handle_ipc,
1848
parent_pipe =
1849
parent_pipe,
1850
proc = proc,
1851
client_object =
1852
client))
2717
1853
parent_pipe.send(True)
2718
1854
# remove the old hook in favor of the new above hook on
2719
1855
# same fileno
2722
1858
funcname = request[1]
2723
1859
args = request[2]
2724
1860
kwargs = request[3]
2725
1861
2726
1862
parent_pipe.send(('data', getattr(client_object,
2727
1863
funcname)(*args,
2728
**kwargs)))
2729
1864
**kwargs)))
1865
2730
1866
if command == 'getattr':
2731
1867
attrname = request[1]
2732
if isinstance(client_object.__getattribute__(attrname),
2733
collections.Callable):
2734
parent_pipe.send(('function', ))
1868
if callable(client_object.__getattribute__(attrname)):
1869
parent_pipe.send(('function',))
2735
1870
else:
2736
parent_pipe.send((
2737
'data', client_object.__getattribute__(attrname)))
2738
1871
parent_pipe.send(('data', client_object
1872
.__getattribute__(attrname)))
1873
2739
1874
if command == 'setattr':
2740
1875
attrname = request[1]
2741
1876
value = request[2]
2742
1877
setattr(client_object, attrname, value)
2743
1878
2744
1879
return True
2745
1880
2746
1881
2747
def rfc3339_duration_to_delta(duration):
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
2750
>>> rfc3339_duration_to_delta("P7D")
2751
datetime.timedelta(7)
2752
>>> rfc3339_duration_to_delta("PT60S")
2753
datetime.timedelta(0, 60)
2754
>>> rfc3339_duration_to_delta("PT60M")
2755
datetime.timedelta(0, 3600)
2756
>>> rfc3339_duration_to_delta("PT24H")
2757
datetime.timedelta(1)
2758
>>> rfc3339_duration_to_delta("P1W")
2759
datetime.timedelta(7)
2760
>>> rfc3339_duration_to_delta("PT5M30S")
2761
datetime.timedelta(0, 330)
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
datetime.timedelta(1, 200)
2764
"""
2765
2766
# Parsing an RFC 3339 duration with regular expressions is not
2767
# possible - there would have to be multiple places for the same
2768
# values, like seconds. The current code, while more esoteric, is
2769
# cleaner without depending on a parsing library. If Python had a
2770
# built-in library for parsing we would use it, but we'd like to
2771
# avoid excessive use of external libraries.
2772
2773
# New type for defining tokens, syntax, and semantics all-in-one
2774
Token = collections.namedtuple("Token", (
2775
"regexp", # To match token; if "value" is not None, must have
2776
# a "group" containing digits
2777
"value", # datetime.timedelta or None
2778
"followers")) # Tokens valid after this token
2779
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
# the "duration" ABNF definition in RFC 3339, Appendix A.
2781
token_end = Token(re.compile(r"$"), None, frozenset())
2782
token_second = Token(re.compile(r"(\d+)S"),
2783
datetime.timedelta(seconds=1),
2784
frozenset((token_end, )))
2785
token_minute = Token(re.compile(r"(\d+)M"),
2786
datetime.timedelta(minutes=1),
2787
frozenset((token_second, token_end)))
2788
token_hour = Token(re.compile(r"(\d+)H"),
2789
datetime.timedelta(hours=1),
2790
frozenset((token_minute, token_end)))
2791
token_time = Token(re.compile(r"T"),
2792
None,
2793
frozenset((token_hour, token_minute,
2794
token_second)))
2795
token_day = Token(re.compile(r"(\d+)D"),
2796
datetime.timedelta(days=1),
2797
frozenset((token_time, token_end)))
2798
token_month = Token(re.compile(r"(\d+)M"),
2799
datetime.timedelta(weeks=4),
2800
frozenset((token_day, token_end)))
2801
token_year = Token(re.compile(r"(\d+)Y"),
2802
datetime.timedelta(weeks=52),
2803
frozenset((token_month, token_end)))
2804
token_week = Token(re.compile(r"(\d+)W"),
2805
datetime.timedelta(weeks=1),
2806
frozenset((token_end, )))
2807
token_duration = Token(re.compile(r"P"), None,
2808
frozenset((token_year, token_month,
2809
token_day, token_time,
2810
token_week)))
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2814
found_token = None
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2819
# Loop until end token is found
2820
while found_token is not token_end:
2821
# Search for any currently valid tokens
2822
for token in followers:
2823
match = token.regexp.match(s)
2824
if match is not None:
2825
# Token found
2826
if token.value is not None:
2827
# Value found, parse digits
2828
factor = int(match.group(1), 10)
2829
# Add to value so far
2830
value += factor * token.value
2831
# Strip token from string
2832
s = token.regexp.sub("", s, 1)
2833
# Go to found token
2834
found_token = token
2835
# Set valid next tokens
2836
followers = found_token.followers
2837
break
2838
else:
2839
# No currently valid tokens were found
2840
raise ValueError("Invalid RFC 3339 duration: {!r}"
2841
.format(duration))
2842
# End token found
2843
return value
2844
2845
2846
1882
def string_to_delta(interval):
2847
1883
"""Parse a string and return a datetime.timedelta
2848
1884
2849
1885
>>> string_to_delta('7d')
2850
1886
datetime.timedelta(7)
2851
1887
>>> string_to_delta('60s')
2859
1895
>>> string_to_delta('5m 30s')
2860
1896
datetime.timedelta(0, 330)
2861
1897
"""
2862
2863
try:
2864
return rfc3339_duration_to_delta(interval)
2865
except ValueError:
2866
pass
2867
2868
1898
timevalue = datetime.timedelta(0)
2869
1899
for s in interval.split():
2870
1900
try:
2871
suffix = s[-1]
1901
suffix = unicode(s[-1])
2872
1902
value = int(s[:-1])
2873
1903
if suffix == "d":
2874
1904
delta = datetime.timedelta(value)
2881
1911
elif suffix == "w":
2882
1912
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2883
1913
else:
2884
raise ValueError("Unknown suffix {!r}".format(suffix))
2885
except IndexError as e:
1914
raise ValueError("Unknown suffix %r" % suffix)
1915
except (ValueError, IndexError) as e:
2886
1916
raise ValueError(*(e.args))
2887
1917
timevalue += delta
2888
1918
return timevalue
2889
1919
2890
1920
2891
def daemon(nochdir=False, noclose=False):
1921
def daemon(nochdir = False, noclose = False):
2892
1922
"""See daemon(3). Standard BSD Unix function.
2893
1923
2894
1924
This should really exist as os.daemon, but it doesn't (yet)."""
2895
1925
if os.fork():
2896
1926
sys.exit()
2901
1931
sys.exit()
2902
1932
if not noclose:
2903
1933
# Close all standard open file descriptors
2904
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1934
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2905
1935
if not stat.S_ISCHR(os.fstat(null).st_mode):
2906
1936
raise OSError(errno.ENODEV,
2907
"{} not a character device"
2908
.format(os.devnull))
1937
"%s not a character device"
1938
% os.path.devnull)
2909
1939
os.dup2(null, sys.stdin.fileno())
2910
1940
os.dup2(null, sys.stdout.fileno())
2911
1941
os.dup2(null, sys.stderr.fileno())
2914
1944
2915
1945
2916
1946
def main():
2917
1947
2918
1948
##################################################################
2919
1949
# Parsing of options, both command line and config file
2920
1950
2921
1951
parser = argparse.ArgumentParser()
2922
1952
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
1953
version = "%%(prog)s %s" % version,
2924
1954
help="show version number and exit")
2925
1955
parser.add_argument("-i", "--interface", metavar="IF",
2926
1956
help="Bind to interface IF")
2932
1962
help="Run self-test")
2933
1963
parser.add_argument("--debug", action="store_true",
2934
1964
help="Debug mode; run in foreground and log"
2935
" to terminal", default=None)
1965
" to terminal")
2936
1966
parser.add_argument("--debuglevel", metavar="LEVEL",
2937
1967
help="Debug level for stdout output")
2938
1968
parser.add_argument("--priority", help="GnuTLS"
2945
1975
" files")
2946
1976
parser.add_argument("--no-dbus", action="store_false",
2947
1977
dest="use_dbus", help="Do not provide D-Bus"
2948
" system bus interface", default=None)
1978
" system bus interface")
2949
1979
parser.add_argument("--no-ipv6", action="store_false",
2950
dest="use_ipv6", help="Do not use IPv6",
2951
default=None)
1980
dest="use_ipv6", help="Do not use IPv6")
2952
1981
parser.add_argument("--no-restore", action="store_false",
2953
1982
dest="restore", help="Do not restore stored"
2954
" state", default=None)
2955
parser.add_argument("--socket", type=int,
2956
help="Specify a file descriptor to a network"
2957
" socket to use instead of creating one")
1983
" state")
2958
1984
parser.add_argument("--statedir", metavar="DIR",
2959
1985
help="Directory to save/restore state in")
2960
parser.add_argument("--foreground", action="store_true",
2961
help="Run in foreground", default=None)
2962
parser.add_argument("--no-zeroconf", action="store_false",
2963
dest="zeroconf", help="Do not use Zeroconf",
2964
default=None)
2965
1986
2966
1987
options = parser.parse_args()
2967
1988
2968
1989
if options.check:
2969
1990
import doctest
2970
fail_count, test_count = doctest.testmod()
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
1991
doctest.testmod()
1992
sys.exit()
1993
2973
1994
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
1995
server_defaults = { "interface": "",
1996
"address": "",
1997
"port": "",
1998
"debug": "False",
1999
"priority":
2000
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2001
"servicename": "Mandos",
2002
"use_dbus": "True",
2003
"use_ipv6": "True",
2004
"debuglevel": "",
2005
"restore": "True",
2006
"statedir": "/var/lib/mandos"
2007
}
2008
2997
2009
# Parse config file for server-global settings
2998
2010
server_config = configparser.SafeConfigParser(server_defaults)
2999
2011
del server_defaults
3000
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2012
server_config.read(os.path.join(options.configdir,
2013
"mandos.conf"))
3001
2014
# Convert the SafeConfigParser object to a dict
3002
2015
server_settings = server_config.defaults()
3003
2016
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
2017
for option in ("debug", "use_dbus", "use_ipv6"):
3006
2018
server_settings[option] = server_config.getboolean("DEFAULT",
3007
2019
option)
3008
2020
if server_settings["port"]:
3009
2021
server_settings["port"] = server_config.getint("DEFAULT",
3010
2022
"port")
3011
if server_settings["socket"]:
3012
server_settings["socket"] = server_config.getint("DEFAULT",
3013
"socket")
3014
# Later, stdin will, and stdout and stderr might, be dup'ed
3015
# over with an opened os.devnull. But we don't want this to
3016
# happen with a supplied network socket.
3017
if 0 <= server_settings["socket"] <= 2:
3018
server_settings["socket"] = os.dup(server_settings
3019
["socket"])
3020
2023
del server_config
3021
2024
3022
2025
# Override the settings from the config file with command line
3023
2026
# options, if set.
3024
2027
for option in ("interface", "address", "port", "debug",
3025
"priority", "servicename", "configdir", "use_dbus",
3026
"use_ipv6", "debuglevel", "restore", "statedir",
3027
"socket", "foreground", "zeroconf"):
2028
"priority", "servicename", "configdir",
2029
"use_dbus", "use_ipv6", "debuglevel", "restore",
2030
"statedir"):
3028
2031
value = getattr(options, option)
3029
2032
if value is not None:
3030
2033
server_settings[option] = value
3031
2034
del options
3032
2035
# Force all strings to be unicode
3033
2036
for option in server_settings.keys():
3034
if isinstance(server_settings[option], bytes):
3035
server_settings[option] = (server_settings[option]
3036
.decode("utf-8"))
3037
# Force all boolean options to be boolean
3038
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
"foreground", "zeroconf"):
3040
server_settings[option] = bool(server_settings[option])
3041
# Debug implies foreground
3042
if server_settings["debug"]:
3043
server_settings["foreground"] = True
2037
if type(server_settings[option]) is str:
2038
server_settings[option] = unicode(server_settings[option])
3044
2039
# Now we have our good server settings in "server_settings"
3045
2040
3046
2041
##################################################################
3047
3048
if (not server_settings["zeroconf"]
3049
and not (server_settings["port"]
3050
or server_settings["socket"] != "")):
3051
parser.error("Needs port or socket to work without Zeroconf")
3052
2042
3053
2043
# For convenience
3054
2044
debug = server_settings["debug"]
3055
2045
debuglevel = server_settings["debuglevel"]
3057
2047
use_ipv6 = server_settings["use_ipv6"]
3058
2048
stored_state_path = os.path.join(server_settings["statedir"],
3059
2049
stored_state_file)
3060
foreground = server_settings["foreground"]
3061
zeroconf = server_settings["zeroconf"]
3062
2050
3063
2051
if debug:
3064
initlogger(debug, logging.DEBUG)
2052
initlogger(logging.DEBUG)
3065
2053
else:
3066
2054
if not debuglevel:
3067
initlogger(debug)
2055
initlogger()
3068
2056
else:
3069
2057
level = getattr(logging, debuglevel.upper())
3070
initlogger(debug, level)
3071
2058
initlogger(level)
2059
3072
2060
if server_settings["servicename"] != "Mandos":
3073
syslogger.setFormatter(
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
' %(levelname)s: %(message)s'.format(
3076
server_settings["servicename"])))
3077
2061
syslogger.setFormatter(logging.Formatter
2062
('Mandos (%s) [%%(process)d]:'
2063
' %%(levelname)s: %%(message)s'
2064
% server_settings["servicename"]))
2065
3078
2066
# Parse config file with clients
3079
client_config = configparser.SafeConfigParser(Client
3080
.client_defaults)
2067
client_defaults = { "timeout": "5m",
2068
"extended_timeout": "15m",
2069
"interval": "2m",
2070
"checker": "fping -q -- %%(host)s",
2071
"host": "",
2072
"approval_delay": "0s",
2073
"approval_duration": "1s",
2074
}
2075
client_config = configparser.SafeConfigParser(client_defaults)
3081
2076
client_config.read(os.path.join(server_settings["configdir"],
3082
2077
"clients.conf"))
3083
2078
3084
2079
global mandos_dbus_service
3085
2080
mandos_dbus_service = None
3086
3087
socketfd = None
3088
if server_settings["socket"] != "":
3089
socketfd = server_settings["socket"]
3090
tcp_server = MandosServer(
3091
(server_settings["address"], server_settings["port"]),
3092
ClientHandler,
3093
interface=(server_settings["interface"] or None),
3094
use_ipv6=use_ipv6,
3095
gnutls_priority=server_settings["priority"],
3096
use_dbus=use_dbus,
3097
socketfd=socketfd)
3098
if not foreground:
3099
pidfilename = "/run/mandos.pid"
3100
if not os.path.isdir("/run/."):
3101
pidfilename = "/var/run/mandos.pid"
3102
pidfile = None
3103
try:
3104
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3105
except IOError as e:
3106
logger.error("Could not open file %r", pidfilename,
3107
exc_info=e)
3108
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
3112
try:
3113
uid = pwd.getpwnam(name).pw_uid
3114
gid = pwd.getpwnam(group).pw_gid
3115
break
2081
2082
tcp_server = MandosServer((server_settings["address"],
2083
server_settings["port"]),
2084
ClientHandler,
2085
interface=(server_settings["interface"]
2086
or None),
2087
use_ipv6=use_ipv6,
2088
gnutls_priority=
2089
server_settings["priority"],
2090
use_dbus=use_dbus)
2091
if not debug:
2092
pidfilename = "/var/run/mandos.pid"
2093
try:
2094
pidfile = open(pidfilename, "w")
2095
except IOError:
2096
logger.error("Could not open file %r", pidfilename)
2097
2098
try:
2099
uid = pwd.getpwnam("_mandos").pw_uid
2100
gid = pwd.getpwnam("_mandos").pw_gid
2101
except KeyError:
2102
try:
2103
uid = pwd.getpwnam("mandos").pw_uid
2104
gid = pwd.getpwnam("mandos").pw_gid
3116
2105
except KeyError:
3117
continue
3118
else:
3119
uid = 65534
3120
gid = 65534
2106
try:
2107
uid = pwd.getpwnam("nobody").pw_uid
2108
gid = pwd.getpwnam("nobody").pw_gid
2109
except KeyError:
2110
uid = 65534
2111
gid = 65534
3121
2112
try:
3122
2113
os.setgid(gid)
3123
2114
os.setuid(uid)
3124
if debug:
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
gid))
3127
2115
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
3130
if error.errno != errno.EPERM:
3131
raise
3132
2116
if error[0] != errno.EPERM:
2117
raise error
2118
3133
2119
if debug:
3134
2120
# Enable all possible GnuTLS debugging
3135
2121
3136
2122
# "Use a log level over 10 to enable all debugging options."
3137
2123
# - GnuTLS manual
3138
gnutls.global_set_log_level(11)
3139
3140
@gnutls.log_func
2124
gnutls.library.functions.gnutls_global_set_log_level(11)
2125
2126
@gnutls.library.types.gnutls_log_func
3141
2127
def debug_gnutls(level, string):
3142
2128
logger.debug("GnuTLS: %s", string[:-1])
3143
3144
gnutls.global_set_log_function(debug_gnutls)
3145
2129
2130
(gnutls.library.functions
2131
.gnutls_global_set_log_function(debug_gnutls))
2132
3146
2133
# Redirect stdin so all checkers get /dev/null
3147
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2134
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3148
2135
os.dup2(null, sys.stdin.fileno())
3149
2136
if null > 2:
3150
2137
os.close(null)
3151
2138
else:
2139
# No console logging
2140
logger.removeHandler(console)
2141
3152
2142
# Need to fork before connecting to D-Bus
3153
if not foreground:
2143
if not debug:
3154
2144
# Close all input and output, do double fork, etc.
3155
2145
daemon()
3156
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
3159
GLib.threads_init()
3160
2146
3161
2147
global main_loop
3162
2148
# From the Avahi example code
3163
DBusGMainLoop(set_as_default=True)
3164
main_loop = GLib.MainLoop()
2149
DBusGMainLoop(set_as_default=True )
2150
main_loop = gobject.MainLoop()
3165
2151
bus = dbus.SystemBus()
3166
2152
# End of Avahi example code
3167
2153
if use_dbus:
3168
2154
try:
3169
2155
bus_name = dbus.service.BusName("se.recompile.Mandos",
3170
bus,
3171
do_not_queue=True)
3172
old_bus_name = dbus.service.BusName(
3173
"se.bsnet.fukt.Mandos", bus,
3174
do_not_queue=True)
3175
except dbus.exceptions.DBusException as e:
3176
logger.error("Disabling D-Bus:", exc_info=e)
2156
bus, do_not_queue=True)
2157
old_bus_name = (dbus.service.BusName
2158
("se.bsnet.fukt.Mandos", bus,
2159
do_not_queue=True))
2160
except dbus.exceptions.NameExistsException as e:
2161
logger.error(unicode(e) + ", disabling D-Bus")
3177
2162
use_dbus = False
3178
2163
server_settings["use_dbus"] = False
3179
2164
tcp_server.use_dbus = False
3180
if zeroconf:
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
3187
if server_settings["interface"]:
3188
service.interface = if_nametoindex(
3189
server_settings["interface"].encode("utf-8"))
3190
2165
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2166
service = AvahiServiceToSyslog(name =
2167
server_settings["servicename"],
2168
servicetype = "_mandos._tcp",
2169
protocol = protocol, bus = bus)
2170
if server_settings["interface"]:
2171
service.interface = (if_nametoindex
2172
(str(server_settings["interface"])))
2173
3191
2174
global multiprocessing_manager
3192
2175
multiprocessing_manager = multiprocessing.Manager()
3193
2176
3194
2177
client_class = Client
3195
2178
if use_dbus:
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
3198
client_settings = Client.config_parser(client_config)
2179
client_class = functools.partial(ClientDBusTransitional,
2180
bus = bus)
2181
2182
special_settings = {
2183
# Some settings need to be accessd by special methods;
2184
# booleans need .getboolean(), etc. Here is a list of them:
2185
"approved_by_default":
2186
lambda section:
2187
client_config.getboolean(section, "approved_by_default"),
2188
"enabled":
2189
lambda section:
2190
client_config.getboolean(section, "enabled"),
2191
}
2192
# Construct a new dict of client settings of this form:
2193
# { client_name: {setting_name: value, ...}, ...}
2194
# with exceptions for any special settings as defined above
2195
client_settings = dict((clientname,
2196
dict((setting,
2197
(value
2198
if setting not in special_settings
2199
else special_settings[setting]
2200
(clientname)))
2201
for setting, value in
2202
client_config.items(clientname)))
2203
for clientname in client_config.sections())
2204
3199
2205
old_client_settings = {}
3200
clients_data = {}
3201
3202
# This is used to redirect stdout and stderr for checker processes
3203
global wnull
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3205
# Only used if server is running in foreground but not in debug
3206
# mode
3207
if debug or not foreground:
3208
wnull.close()
3209
2206
clients_data = []
2207
3210
2208
# Get client data and settings from last running state.
3211
2209
if server_settings["restore"]:
3212
2210
try:
3213
2211
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3216
stored_state)
3217
else:
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3222
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3234
clients_data[key] = value
3235
# .client_structure
3236
value["client_structure"] = [
3237
(s.decode("utf-8")
3238
if isinstance(s, bytes)
3239
else s) for s in
3240
value["client_structure"]]
3241
# .name & .host
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3250
# .keys()
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3258
# .host
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3262
.decode("utf-8"))
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
3263
2214
os.remove(stored_state_path)
3264
2215
except IOError as e:
3265
if e.errno == errno.ENOENT:
3266
logger.warning("Could not load persistent state:"
3267
" {}".format(os.strerror(e.errno)))
3268
else:
3269
logger.critical("Could not load persistent state:",
3270
exc_info=e)
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
3271
2219
raise
3272
except EOFError as e:
3273
logger.warning("Could not load persistent state: "
3274
"EOFError:",
3275
exc_info=e)
3276
3277
with PGPEngine() as pgp:
3278
for client_name, client in clients_data.items():
3279
# Skip removed clients
3280
if client_name not in client_settings:
3281
continue
3282
2220
2221
with Crypto() as crypt:
2222
for client in clients_data:
2223
client_name = client["name"]
2224
3283
2225
# Decide which value to use after restoring saved state.
3284
2226
# We have three different values: Old config file,
3285
2227
# new config file, and saved state.
3290
2232
# For each value in new config, check if it
3291
2233
# differs from the old config value (Except for
3292
2234
# the "secret" attribute)
3293
if (name != "secret"
3294
and (value !=
3295
old_client_settings[client_name][name])):
3296
client[name] = value
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
setattr(client, name, value)
3297
2239
except KeyError:
3298
2240
pass
3299
2241
3300
2242
# Clients who has passed its expire date can still be
3301
# enabled if its last checker was successful. A Client
3302
# whose checker succeeded before we stored its state is
3303
# assumed to have successfully run all checkers during
3304
# downtime.
3305
if client["enabled"]:
3306
if datetime.datetime.utcnow() >= client["expires"]:
3307
if not client["last_checked_ok"]:
3308
logger.warning(
3309
"disabling client {} - Client never "
3310
"performed a successful checker".format(
3311
client_name))
3312
client["enabled"] = False
3313
elif client["last_checker_status"] != 0:
3314
logger.warning(
3315
"disabling client {} - Client last"
3316
" checker failed with error code"
3317
" {}".format(
3318
client_name,
3319
client["last_checker_status"]))
2243
# enabled if its last checker was sucessful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"] and client["last_checked_ok"]:
2247
if ((datetime.datetime.utcnow()
2248
- client["last_checked_ok"])
2249
> client["interval"]):
2250
if client["last_checker_status"] != 0:
3320
2251
client["enabled"] = False
3321
2252
else:
3322
client["expires"] = (
3323
datetime.datetime.utcnow()
3324
+ client["timeout"])
3325
logger.debug("Last checker succeeded,"
3326
" keeping {} enabled".format(
3327
client_name))
2253
client["expires"] = (datetime.datetime
2254
.utcnow()
2255
+ client["timeout"])
2256
2257
client["changedstate"] = (multiprocessing_manager
2258
.Condition
2259
(multiprocessing_manager
2260
.Lock()))
2261
if use_dbus:
2262
new_client = (ClientDBusTransitional.__new__
2263
(ClientDBusTransitional))
2264
tcp_server.clients[client_name] = new_client
2265
new_client.bus = bus
2266
for name, value in client.iteritems():
2267
setattr(new_client, name, value)
2268
client_object_name = unicode(client_name).translate(
2269
{ord("."): ord("_"),
2270
ord("-"): ord("_")})
2271
new_client.dbus_object_path = (dbus.ObjectPath
2272
("/clients/"
2273
+ client_object_name))
2274
DBusObjectWithProperties.__init__(new_client,
2275
new_client.bus,
2276
new_client
2277
.dbus_object_path)
2278
else:
2279
tcp_server.clients[client_name] = (Client.__new__
2280
(Client))
2281
for name, value in client.iteritems():
2282
setattr(tcp_server.clients[client_name],
2283
name, value)
2284
3328
2285
try:
3329
client["secret"] = pgp.decrypt(
3330
client["encrypted_secret"],
2286
tcp_server.clients[client_name].secret = (
2287
crypt.decrypt(tcp_server.clients[client_name]
2288
.encrypted_secret,
2289
client_settings[client_name]
2290
["secret"]))
2291
except CryptoError:
2292
# If decryption fails, we use secret from new settings
2293
tcp_server.clients[client_name].secret = (
3331
2294
client_settings[client_name]["secret"])
3332
except PGPError:
3333
# If decryption fails, we use secret from new settings
3334
logger.debug("Failed to decrypt {} old secret".format(
3335
client_name))
3336
client["secret"] = (client_settings[client_name]
3337
["secret"])
3338
3339
# Add/remove clients based on new changes made to config
3340
for client_name in (set(old_client_settings)
3341
- set(client_settings)):
3342
del clients_data[client_name]
3343
for client_name in (set(client_settings)
3344
- set(old_client_settings)):
3345
clients_data[client_name] = client_settings[client_name]
3346
3347
# Create all client objects
3348
for client_name, client in clients_data.items():
3349
tcp_server.clients[client_name] = client_class(
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
2295
2296
# Create/remove clients based on new changes made to config
2297
for clientname in set(old_client_settings) - set(client_settings):
2298
del tcp_server.clients[clientname]
2299
for clientname in set(client_settings) - set(old_client_settings):
2300
tcp_server.clients[clientname] = (client_class(name
2301
= clientname,
2302
config =
2303
client_settings
2304
[clientname]))
2305
3354
2306
if not tcp_server.clients:
3355
2307
logger.warning("No clients defined")
3356
3357
if not foreground:
3358
if pidfile is not None:
3359
pid = os.getpid()
3360
try:
3361
with pidfile:
3362
print(pid, file=pidfile)
3363
except IOError:
3364
logger.error("Could not write to file %r with PID %d",
3365
pidfilename, pid)
3366
del pidfile
2308
2309
if not debug:
2310
try:
2311
with pidfile:
2312
pid = os.getpid()
2313
pidfile.write(str(pid) + "\n".encode("utf-8"))
2314
del pidfile
2315
except IOError:
2316
logger.error("Could not write to file %r with PID %d",
2317
pidfilename, pid)
2318
except NameError:
2319
# "pidfile" was never created
2320
pass
3367
2321
del pidfilename
3368
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
3372
2322
2323
signal.signal(signal.SIGINT, signal.SIG_IGN)
2324
2325
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2326
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2327
3373
2328
if use_dbus:
3374
3375
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
2329
class MandosDBusService(dbus.service.Object):
3378
2330
"""A D-Bus proxy object"""
3379
3380
2331
def __init__(self):
3381
2332
dbus.service.Object.__init__(self, bus, "/")
3382
3383
2333
_interface = "se.recompile.Mandos"
3384
2334
3385
2335
@dbus.service.signal(_interface, signature="o")
3386
2336
def ClientAdded(self, objpath):
3387
2337
"D-Bus signal"
3388
2338
pass
3389
2339
3390
2340
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
2341
def ClientNotFound(self, fingerprint, address):
3392
2342
"D-Bus signal"
3393
2343
pass
3394
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
"true"})
2344
3397
2345
@dbus.service.signal(_interface, signature="os")
3398
2346
def ClientRemoved(self, objpath, name):
3399
2347
"D-Bus signal"
3400
2348
pass
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2349
3404
2350
@dbus.service.method(_interface, out_signature="ao")
3405
2351
def GetAllClients(self):
3406
2352
"D-Bus method"
3407
return dbus.Array(c.dbus_object_path for c in
3408
tcp_server.clients.values())
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2353
return dbus.Array(c.dbus_object_path
2354
for c in
2355
tcp_server.clients.itervalues())
2356
3412
2357
@dbus.service.method(_interface,
3413
2358
out_signature="a{oa{sv}}")
3414
2359
def GetAllClientsWithProperties(self):
3415
2360
"D-Bus method"
3416
2361
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
2362
((c.dbus_object_path, c.GetAll(""))
2363
for c in tcp_server.clients.itervalues()),
3420
2364
signature="oa{sv}")
3421
2365
3422
2366
@dbus.service.method(_interface, in_signature="o")
3423
2367
def RemoveClient(self, object_path):
3424
2368
"D-Bus method"
3425
for c in tcp_server.clients.values():
2369
for c in tcp_server.clients.itervalues():
3426
2370
if c.dbus_object_path == object_path:
3427
2371
del tcp_server.clients[c.name]
3428
2372
c.remove_from_connection()
3429
# Don't signal the disabling
2373
# Don't signal anything except ClientRemoved
3430
2374
c.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
2375
# Emit D-Bus signal
2376
self.ClientRemoved(object_path, c.name)
3433
2377
return
3434
2378
raise KeyError(object_path)
3435
2379
3436
2380
del _interface
3437
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3441
"""D-Bus method"""
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3452
if use_dbus:
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3460
# Old signal
3461
self.ClientAdded(client.dbus_object_path)
3462
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3470
# Old signal
3471
self.ClientRemoved(client.dbus_object_path,
3472
client.name)
3473
3474
mandos_dbus_service = MandosDBusService()
3475
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3479
wn = wnull
3480
2381
2382
class MandosDBusServiceTransitional(MandosDBusService):
2383
__metaclass__ = AlternateDBusNamesMetaclass
2384
mandos_dbus_service = MandosDBusServiceTransitional()
2385
3481
2386
def cleanup():
3482
2387
"Cleanup function; run on exit"
3483
if zeroconf:
3484
service.cleanup()
3485
3486
mp.active_children()
3487
wn.close()
2388
service.cleanup()
2389
2390
multiprocessing.active_children()
3488
2391
if not (tcp_server.clients or client_settings):
3489
2392
return
3490
2393
3491
2394
# Store client before exiting. Secrets are encrypted with key
3492
2395
# based on what config file has. If config file is
3493
2396
# removed/edited, old secret will thus be unrecovable.
3494
clients = {}
3495
with PGPEngine() as pgp:
3496
for client in tcp_server.clients.values():
2397
clients = []
2398
with Crypto() as crypt:
2399
for client in tcp_server.clients.itervalues():
3497
2400
key = client_settings[client.name]["secret"]
3498
client.encrypted_secret = pgp.encrypt(client.secret,
3499
key)
2401
client.encrypted_secret = crypt.encrypt(client.secret,
2402
key)
3500
2403
client_dict = {}
3501
3502
# A list of attributes that can not be pickled
3503
# + secret.
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3506
for name, typ in inspect.getmembers(dbus.service
3507
.Object):
2404
2405
# A list of attributes that will not be stored when
2406
# shutting down.
2407
exclude = set(("bus", "changedstate", "secret"))
2408
for name, typ in (inspect.getmembers
2409
(dbus.service.Object)):
3508
2410
exclude.add(name)
3509
2411
3510
2412
client_dict["encrypted_secret"] = (client
3511
2413
.encrypted_secret)
3512
2414
for attr in client.client_structure:
3513
2415
if attr not in exclude:
3514
2416
client_dict[attr] = getattr(client, attr)
3515
3516
clients[client.name] = client_dict
2417
2418
clients.append(client_dict)
3517
2419
del client_settings[client.name]["secret"]
3518
2420
3519
2421
try:
3520
with tempfile.NamedTemporaryFile(
3521
mode='wb',
3522
suffix=".pickle",
3523
prefix='clients-',
3524
dir=os.path.dirname(stored_state_path),
3525
delete=False) as stored_state:
3526
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
3528
tempname = stored_state.name
3529
os.rename(tempname, stored_state_path)
2422
with os.fdopen(os.open(stored_state_path,
2423
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2424
0600), "wb") as stored_state:
2425
pickle.dump((clients, client_settings), stored_state)
3530
2426
except (IOError, OSError) as e:
3531
if not debug:
3532
try:
3533
os.remove(tempname)
3534
except NameError:
3535
pass
3536
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
logger.warning("Could not save persistent state: {}"
3538
.format(os.strerror(e.errno)))
3539
else:
3540
logger.warning("Could not save persistent state:",
3541
exc_info=e)
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if e.errno not in (errno.ENOENT, errno.EACCES):
3542
2430
raise
3543
2431
3544
2432
# Delete all clients, and settings from config
3545
2433
while tcp_server.clients:
3546
2434
name, client = tcp_server.clients.popitem()
3547
2435
if use_dbus:
3548
2436
client.remove_from_connection()
3549
# Don't signal the disabling
2437
# Don't signal anything except ClientRemoved
3550
2438
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
3552
2439
if use_dbus:
3553
mandos_dbus_service.client_removed_signal(client)
2440
# Emit D-Bus signal
2441
mandos_dbus_service.ClientRemoved(client
2442
.dbus_object_path,
2443
client.name)
3554
2444
client_settings.clear()
3555
2445
3556
2446
atexit.register(cleanup)
3557
3558
for client in tcp_server.clients.values():
2447
2448
for client in tcp_server.clients.itervalues():
3559
2449
if use_dbus:
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
2450
# Emit D-Bus signal
2451
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
2452
# Need to initiate checking of clients
3563
2453
if client.enabled:
3564
2454
client.init_checker()
3565
2455
3566
2456
tcp_server.enable()
3567
2457
tcp_server.server_activate()
3568
2458
3569
2459
# Find out what port we got
3570
if zeroconf:
3571
service.port = tcp_server.socket.getsockname()[1]
2460
service.port = tcp_server.socket.getsockname()[1]
3572
2461
if use_ipv6:
3573
2462
logger.info("Now listening on address %r, port %d,"
3574
" flowinfo %d, scope_id %d",
3575
*tcp_server.socket.getsockname())
2463
" flowinfo %d, scope_id %d"
2464
% tcp_server.socket.getsockname())
3576
2465
else: # IPv4
3577
logger.info("Now listening on address %r, port %d",
3578
*tcp_server.socket.getsockname())
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
2466
logger.info("Now listening on address %r, port %d"
2467
% tcp_server.socket.getsockname())
2468
2469
#service.interface = tcp_server.socket.getsockname()[3]
2470
3582
2471
try:
3583
if zeroconf:
3584
# From the Avahi example code
3585
try:
3586
service.activate()
3587
except dbus.exceptions.DBusException as error:
3588
logger.critical("D-Bus Exception", exc_info=error)
3589
cleanup()
3590
sys.exit(1)
3591
# End of Avahi example code
3592
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3597
2472
# From the Avahi example code
2473
try:
2474
service.activate()
2475
except dbus.exceptions.DBusException as error:
2476
logger.critical("DBusException: %s", error)
2477
cleanup()
2478
sys.exit(1)
2479
# End of Avahi example code
2480
2481
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2482
lambda *args, **kwargs:
2483
(tcp_server.handle_request
2484
(*args[2:], **kwargs) or True))
2485
3598
2486
logger.debug("Starting main loop")
3599
2487
main_loop.run()
3600
2488
except AvahiError as error:
3601
logger.critical("Avahi Error", exc_info=error)
2489
logger.critical("AvahiError: %s", error)
3602
2490
cleanup()
3603
2491
sys.exit(1)
3604
2492
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0