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- Committer: Teddy Hogeborn
- Date: 2011-04-02 06:37:18 UTC
- Revision ID: teddy@fukt.bsnet.se-20110402063718-13ldrcuu0t33sdc4
* mandos: Tolerate restarting Avahi servers. Also Changed to new
"except x as y" exception syntax.
(AvahiService.entry_group_state_changed_match): New; contains the
SignalMatch object.
(AvahiService.remove): Really remove the group and the signal
connection, if any.
(AvahiService.add): Always create a new group and signal connection.
(AvahiService.cleanup): Changed to simply call remove().
(AvahiService.server_state_changed): Handle and log more bad states.
(AvahiService.activate): Set "follow_name_owner_changes=True" on the
Avahi Server proxy object.
(ClientDBus.checked_ok): Do not return anything.
(ClientDBus.CheckedOK): Do not return anything, as documented.
* mandos-monitor: Call D-Bus methods asynchronously.
"except x as y" exception syntax.
(AvahiService.entry_group_state_changed_match): New; contains the
SignalMatch object.
(AvahiService.remove): Really remove the group and the signal
connection, if any.
(AvahiService.add): Always create a new group and signal connection.
(AvahiService.cleanup): Changed to simply call remove().
(AvahiService.server_state_changed): Handle and log more bad states.
(AvahiService.activate): Set "follow_name_owner_changes=True" on the
Avahi Server proxy object.
(ClientDBus.checked_ok): Do not return anything.
(ClientDBus.CheckedOK): Do not return anything, as documented.
* mandos-monitor: Call D-Bus methods asynchronously.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
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
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
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
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
65
82
66
import dbus
83
67
import dbus.service
84
import gi
85
from gi.repository import GLib
68
import gobject
69
import avahi
86
70
from dbus.mainloop.glib import DBusGMainLoop
87
71
import ctypes
88
72
import ctypes.util
89
73
import xml.dom.minidom
90
74
import inspect
91
75
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
str = unicode
95
96
# Show warnings by default
97
if not sys.warnoptions:
98
import warnings
99
warnings.simplefilter("default")
100
101
# Try to find the value of SO_BINDTODEVICE:
102
76
try:
103
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
104
# newer, and it is also the most natural place for it:
105
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
106
78
except AttributeError:
107
79
try:
108
# This is where SO_BINDTODEVICE was up to and including Python
109
# 2.6, and also 3.2:
110
80
from IN import SO_BINDTODEVICE
111
81
except ImportError:
112
# In Python 2.7 it seems to have been removed entirely.
113
# Try running the C preprocessor:
114
try:
115
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
"/dev/stdin"],
117
stdin=subprocess.PIPE,
118
stdout=subprocess.PIPE)
119
stdout = cc.communicate(
120
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
121
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
122
except (OSError, ValueError, IndexError):
123
# No value found
124
SO_BINDTODEVICE = None
125
126
if sys.version_info < (3, 2):
127
configparser.Configparser = configparser.SafeConfigParser
128
129
version = "1.8.9"
130
stored_state_file = "clients.pickle"
131
132
logger = logging.getLogger()
133
logging.captureWarnings(True) # Show warnings via the logging system
134
syslogger = None
135
136
try:
137
if_nametoindex = ctypes.cdll.LoadLibrary(
138
ctypes.util.find_library("c")).if_nametoindex
139
except (OSError, AttributeError):
140
141
def if_nametoindex(interface):
142
"Get an interface index the hard way, i.e. using fcntl()"
143
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
144
with contextlib.closing(socket.socket()) as s:
145
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
146
struct.pack(b"16s16x", interface))
147
interface_index = struct.unpack("I", ifreq[16:20])[0]
148
return interface_index
149
150
151
def copy_function(func):
152
"""Make a copy of a function"""
153
if sys.version_info.major == 2:
154
return types.FunctionType(func.func_code,
155
func.func_globals,
156
func.func_name,
157
func.func_defaults,
158
func.func_closure)
159
else:
160
return types.FunctionType(func.__code__,
161
func.__globals__,
162
func.__name__,
163
func.__defaults__,
164
func.__closure__)
165
166
167
def initlogger(debug, level=logging.WARNING):
168
"""init logger and add loglevel"""
169
170
global syslogger
171
syslogger = (logging.handlers.SysLogHandler(
172
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
173
address="/dev/log"))
174
syslogger.setFormatter(logging.Formatter
175
('Mandos [%(process)d]: %(levelname)s:'
176
' %(message)s'))
177
logger.addHandler(syslogger)
178
179
if debug:
180
console = logging.StreamHandler()
181
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
182
' [%(process)d]:'
183
' %(levelname)s:'
184
' %(message)s'))
185
logger.addHandler(console)
186
logger.setLevel(level)
187
188
189
class PGPError(Exception):
190
"""Exception if encryption/decryption fails"""
191
pass
192
193
194
class PGPEngine:
195
"""A simple class for OpenPGP symmetric encryption & decryption"""
196
197
def __init__(self):
198
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
199
self.gpg = "gpg"
200
try:
201
output = subprocess.check_output(["gpgconf"])
202
for line in output.splitlines():
203
name, text, path = line.split(b":")
204
if name == b"gpg":
205
self.gpg = path
206
break
207
except OSError as e:
208
if e.errno != errno.ENOENT:
209
raise
210
self.gnupgargs = ['--batch',
211
'--homedir', self.tempdir,
212
'--force-mdc',
213
'--quiet']
214
# Only GPG version 1 has the --no-use-agent option.
215
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
216
self.gnupgargs.append("--no-use-agent")
217
218
def __enter__(self):
219
return self
220
221
def __exit__(self, exc_type, exc_value, traceback):
222
self._cleanup()
223
return False
224
225
def __del__(self):
226
self._cleanup()
227
228
def _cleanup(self):
229
if self.tempdir is not None:
230
# Delete contents of tempdir
231
for root, dirs, files in os.walk(self.tempdir,
232
topdown=False):
233
for filename in files:
234
os.remove(os.path.join(root, filename))
235
for dirname in dirs:
236
os.rmdir(os.path.join(root, dirname))
237
# Remove tempdir
238
os.rmdir(self.tempdir)
239
self.tempdir = None
240
241
def password_encode(self, password):
242
# Passphrase can not be empty and can not contain newlines or
243
# NUL bytes. So we prefix it and hex encode it.
244
encoded = b"mandos" + binascii.hexlify(password)
245
if len(encoded) > 2048:
246
# GnuPG can't handle long passwords, so encode differently
247
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
248
.replace(b"\n", b"\\n")
249
.replace(b"\0", b"\\x00"))
250
return encoded
251
252
def encrypt(self, data, password):
253
passphrase = self.password_encode(password)
254
with tempfile.NamedTemporaryFile(
255
dir=self.tempdir) as passfile:
256
passfile.write(passphrase)
257
passfile.flush()
258
proc = subprocess.Popen([self.gpg, '--symmetric',
259
'--passphrase-file',
260
passfile.name]
261
+ self.gnupgargs,
262
stdin=subprocess.PIPE,
263
stdout=subprocess.PIPE,
264
stderr=subprocess.PIPE)
265
ciphertext, err = proc.communicate(input=data)
266
if proc.returncode != 0:
267
raise PGPError(err)
268
return ciphertext
269
270
def decrypt(self, data, password):
271
passphrase = self.password_encode(password)
272
with tempfile.NamedTemporaryFile(
273
dir=self.tempdir) as passfile:
274
passfile.write(passphrase)
275
passfile.flush()
276
proc = subprocess.Popen([self.gpg, '--decrypt',
277
'--passphrase-file',
278
passfile.name]
279
+ self.gnupgargs,
280
stdin=subprocess.PIPE,
281
stdout=subprocess.PIPE,
282
stderr=subprocess.PIPE)
283
decrypted_plaintext, err = proc.communicate(input=data)
284
if proc.returncode != 0:
285
raise PGPError(err)
286
return decrypted_plaintext
287
288
289
# Pretend that we have an Avahi module
290
class avahi:
291
"""This isn't so much a class as it is a module-like namespace."""
292
IF_UNSPEC = -1 # avahi-common/address.h
293
PROTO_UNSPEC = -1 # avahi-common/address.h
294
PROTO_INET = 0 # avahi-common/address.h
295
PROTO_INET6 = 1 # avahi-common/address.h
296
DBUS_NAME = "org.freedesktop.Avahi"
297
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
298
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
299
DBUS_PATH_SERVER = "/"
300
301
@staticmethod
302
def string_array_to_txt_array(t):
303
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
304
for s in t), signature="ay")
305
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
306
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
307
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
308
SERVER_INVALID = 0 # avahi-common/defs.h
309
SERVER_REGISTERING = 1 # avahi-common/defs.h
310
SERVER_RUNNING = 2 # avahi-common/defs.h
311
SERVER_COLLISION = 3 # avahi-common/defs.h
312
SERVER_FAILURE = 4 # avahi-common/defs.h
313
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
314
102
315
103
class AvahiError(Exception):
316
104
def __init__(self, value, *args, **kwargs):
317
105
self.value = value
318
return super(AvahiError, self).__init__(value, *args,
319
**kwargs)
320
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
321
109
322
110
class AvahiServiceError(AvahiError):
323
111
pass
324
112
325
326
113
class AvahiGroupError(AvahiError):
327
114
pass
328
115
329
116
330
class AvahiService:
117
class AvahiService(object):
331
118
"""An Avahi (Zeroconf) service.
332
119
333
120
Attributes:
334
121
interface: integer; avahi.IF_UNSPEC or an interface index.
335
122
Used to optionally bind to the specified interface.
336
123
name: string; Example: 'Mandos'
337
124
type: string; Example: '_mandos._tcp'.
338
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
339
126
port: integer; what port to announce
340
127
TXT: list of strings; TXT record for the service
341
128
domain: string; Domain to publish on, default to .local if empty.
347
134
server: D-Bus Server
348
135
bus: dbus.SystemBus()
349
136
"""
350
351
def __init__(self,
352
interface=avahi.IF_UNSPEC,
353
name=None,
354
servicetype=None,
355
port=None,
356
TXT=None,
357
domain="",
358
host="",
359
max_renames=32768,
360
protocol=avahi.PROTO_UNSPEC,
361
bus=None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
362
141
self.interface = interface
363
142
self.name = name
364
143
self.type = servicetype
373
152
self.server = None
374
153
self.bus = bus
375
154
self.entry_group_state_changed_match = None
376
377
def rename(self, remove=True):
155
def rename(self):
378
156
"""Derived from the Avahi example code"""
379
157
if self.rename_count >= self.max_renames:
380
158
logger.critical("No suitable Zeroconf service name found"
381
159
" after %i retries, exiting.",
382
160
self.rename_count)
383
161
raise AvahiServiceError("Too many renames")
384
self.name = str(
385
self.server.GetAlternativeServiceName(self.name))
386
self.rename_count += 1
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
387
163
logger.info("Changing Zeroconf service name to %r ...",
388
164
self.name)
389
if remove:
390
self.remove()
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
391
170
try:
392
171
self.add()
393
172
except dbus.exceptions.DBusException as error:
394
if (error.get_dbus_name()
395
== "org.freedesktop.Avahi.CollisionError"):
396
logger.info("Local Zeroconf service name collision.")
397
return self.rename(remove=False)
398
else:
399
logger.critical("D-Bus Exception", exc_info=error)
400
self.cleanup()
401
os._exit(1)
402
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
176
self.rename_count += 1
403
177
def remove(self):
404
178
"""Derived from the Avahi example code"""
179
if self.group is not None:
180
try:
181
self.group.Free()
182
except (dbus.exceptions.UnknownMethodException,
183
dbus.exceptions.DBusException) as e:
184
pass
185
self.group = None
405
186
if self.entry_group_state_changed_match is not None:
406
187
self.entry_group_state_changed_match.remove()
407
188
self.entry_group_state_changed_match = None
408
if self.group is not None:
409
self.group.Reset()
410
411
189
def add(self):
412
190
"""Derived from the Avahi example code"""
413
191
self.remove()
414
if self.group is None:
415
self.group = dbus.Interface(
416
self.bus.get_object(avahi.DBUS_NAME,
417
self.server.EntryGroupNew()),
418
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
self.group = dbus.Interface(
193
self.bus.get_object(avahi.DBUS_NAME,
194
self.server.EntryGroupNew(),
195
follow_name_owner_changes=True),
196
avahi.DBUS_INTERFACE_ENTRY_GROUP)
419
197
self.entry_group_state_changed_match = (
420
198
self.group.connect_to_signal(
421
'StateChanged', self.entry_group_state_changed))
199
'StateChanged', self .entry_group_state_changed))
422
200
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
423
201
self.name, self.type)
424
202
self.group.AddService(
430
208
dbus.UInt16(self.port),
431
209
avahi.string_array_to_txt_array(self.TXT))
432
210
self.group.Commit()
433
434
211
def entry_group_state_changed(self, state, error):
435
212
"""Derived from the Avahi example code"""
436
213
logger.debug("Avahi entry group state change: %i", state)
437
214
438
215
if state == avahi.ENTRY_GROUP_ESTABLISHED:
439
216
logger.debug("Zeroconf service established.")
440
217
elif state == avahi.ENTRY_GROUP_COLLISION:
442
219
self.rename()
443
220
elif state == avahi.ENTRY_GROUP_FAILURE:
444
221
logger.critical("Avahi: Error in group state changed %s",
445
str(error))
446
raise AvahiGroupError("State changed: {!s}".format(error))
447
222
unicode(error))
223
raise AvahiGroupError("State changed: %s"
224
% unicode(error))
448
225
def cleanup(self):
449
226
"""Derived from the Avahi example code"""
450
if self.group is not None:
451
try:
452
self.group.Free()
453
except (dbus.exceptions.UnknownMethodException,
454
dbus.exceptions.DBusException):
455
pass
456
self.group = None
457
227
self.remove()
458
459
228
def server_state_changed(self, state, error=None):
460
229
"""Derived from the Avahi example code"""
461
230
logger.debug("Avahi server state change: %i", state)
462
bad_states = {
463
avahi.SERVER_INVALID: "Zeroconf server invalid",
464
avahi.SERVER_REGISTERING: None,
465
avahi.SERVER_COLLISION: "Zeroconf server name collision",
466
avahi.SERVER_FAILURE: "Zeroconf server failure",
467
}
231
bad_states = { avahi.SERVER_INVALID:
232
"Zeroconf server invalid",
233
avahi.SERVER_REGISTERING: None,
234
avahi.SERVER_COLLISION:
235
"Zeroconf server name collision",
236
avahi.SERVER_FAILURE:
237
"Zeroconf server failure" }
468
238
if state in bad_states:
469
if bad_states[state] is not None:
470
if error is None:
471
logger.error(bad_states[state])
472
else:
473
logger.error(bad_states[state] + ": %r", error)
474
self.cleanup()
239
if bad_states[state]:
240
logger.error(bad_states[state])
241
self.remove()
475
242
elif state == avahi.SERVER_RUNNING:
476
try:
477
self.add()
478
except dbus.exceptions.DBusException as error:
479
if (error.get_dbus_name()
480
== "org.freedesktop.Avahi.CollisionError"):
481
logger.info("Local Zeroconf service name"
482
" collision.")
483
return self.rename(remove=False)
484
else:
485
logger.critical("D-Bus Exception", exc_info=error)
486
self.cleanup()
487
os._exit(1)
243
self.add()
488
244
else:
489
if error is None:
490
logger.debug("Unknown state: %r", state)
491
else:
492
logger.debug("Unknown state: %r: %r", state, error)
493
245
logger.debug("Unknown state: %r", state)
494
246
def activate(self):
495
247
"""Derived from the Avahi example code"""
496
248
if self.server is None:
500
252
follow_name_owner_changes=True),
501
253
avahi.DBUS_INTERFACE_SERVER)
502
254
self.server.connect_to_signal("StateChanged",
503
self.server_state_changed)
255
self.server_state_changed)
504
256
self.server_state_changed(self.server.GetState())
505
257
506
258
507
class AvahiServiceToSyslog(AvahiService):
508
def rename(self, *args, **kwargs):
509
"""Add the new name to the syslog messages"""
510
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
511
syslogger.setFormatter(logging.Formatter(
512
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
513
.format(self.name)))
514
return ret
515
516
517
# Pretend that we have a GnuTLS module
518
class gnutls:
519
"""This isn't so much a class as it is a module-like namespace."""
520
521
library = ctypes.util.find_library("gnutls")
522
if library is None:
523
library = ctypes.util.find_library("gnutls-deb0")
524
_library = ctypes.cdll.LoadLibrary(library)
525
del library
526
527
# Unless otherwise indicated, the constants and types below are
528
# all from the gnutls/gnutls.h C header file.
529
530
# Constants
531
E_SUCCESS = 0
532
E_INTERRUPTED = -52
533
E_AGAIN = -28
534
CRT_OPENPGP = 2
535
CRT_RAWPK = 3
536
CLIENT = 2
537
SHUT_RDWR = 0
538
CRD_CERTIFICATE = 1
539
E_NO_CERTIFICATE_FOUND = -49
540
X509_FMT_DER = 0
541
NO_TICKETS = 1<<10
542
ENABLE_RAWPK = 1<<18
543
CTYPE_PEERS = 3
544
KEYID_USE_SHA256 = 1 # gnutls/x509.h
545
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
546
547
# Types
548
class session_int(ctypes.Structure):
549
_fields_ = []
550
session_t = ctypes.POINTER(session_int)
551
552
class certificate_credentials_st(ctypes.Structure):
553
_fields_ = []
554
certificate_credentials_t = ctypes.POINTER(
555
certificate_credentials_st)
556
certificate_type_t = ctypes.c_int
557
558
class datum_t(ctypes.Structure):
559
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
560
('size', ctypes.c_uint)]
561
562
class openpgp_crt_int(ctypes.Structure):
563
_fields_ = []
564
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
565
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
566
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
567
credentials_type_t = ctypes.c_int
568
transport_ptr_t = ctypes.c_void_p
569
close_request_t = ctypes.c_int
570
571
# Exceptions
572
class Error(Exception):
573
def __init__(self, message=None, code=None, args=()):
574
# Default usage is by a message string, but if a return
575
# code is passed, convert it to a string with
576
# gnutls.strerror()
577
self.code = code
578
if message is None and code is not None:
579
message = gnutls.strerror(code)
580
return super(gnutls.Error, self).__init__(
581
message, *args)
582
583
class CertificateSecurityError(Error):
584
pass
585
586
# Classes
587
class Credentials:
588
def __init__(self):
589
self._c_object = gnutls.certificate_credentials_t()
590
gnutls.certificate_allocate_credentials(
591
ctypes.byref(self._c_object))
592
self.type = gnutls.CRD_CERTIFICATE
593
594
def __del__(self):
595
gnutls.certificate_free_credentials(self._c_object)
596
597
class ClientSession:
598
def __init__(self, socket, credentials=None):
599
self._c_object = gnutls.session_t()
600
gnutls_flags = gnutls.CLIENT
601
if gnutls.check_version(b"3.5.6"):
602
gnutls_flags |= gnutls.NO_TICKETS
603
if gnutls.has_rawpk:
604
gnutls_flags |= gnutls.ENABLE_RAWPK
605
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
606
del gnutls_flags
607
gnutls.set_default_priority(self._c_object)
608
gnutls.transport_set_ptr(self._c_object, socket.fileno())
609
gnutls.handshake_set_private_extensions(self._c_object,
610
True)
611
self.socket = socket
612
if credentials is None:
613
credentials = gnutls.Credentials()
614
gnutls.credentials_set(self._c_object, credentials.type,
615
ctypes.cast(credentials._c_object,
616
ctypes.c_void_p))
617
self.credentials = credentials
618
619
def __del__(self):
620
gnutls.deinit(self._c_object)
621
622
def handshake(self):
623
return gnutls.handshake(self._c_object)
624
625
def send(self, data):
626
data = bytes(data)
627
data_len = len(data)
628
while data_len > 0:
629
data_len -= gnutls.record_send(self._c_object,
630
data[-data_len:],
631
data_len)
632
633
def bye(self):
634
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
635
636
# Error handling functions
637
def _error_code(result):
638
"""A function to raise exceptions on errors, suitable
639
for the 'restype' attribute on ctypes functions"""
640
if result >= 0:
641
return result
642
if result == gnutls.E_NO_CERTIFICATE_FOUND:
643
raise gnutls.CertificateSecurityError(code=result)
644
raise gnutls.Error(code=result)
645
646
def _retry_on_error(result, func, arguments):
647
"""A function to retry on some errors, suitable
648
for the 'errcheck' attribute on ctypes functions"""
649
while result < 0:
650
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
651
return _error_code(result)
652
result = func(*arguments)
653
return result
654
655
# Unless otherwise indicated, the function declarations below are
656
# all from the gnutls/gnutls.h C header file.
657
658
# Functions
659
priority_set_direct = _library.gnutls_priority_set_direct
660
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
661
ctypes.POINTER(ctypes.c_char_p)]
662
priority_set_direct.restype = _error_code
663
664
init = _library.gnutls_init
665
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
666
init.restype = _error_code
667
668
set_default_priority = _library.gnutls_set_default_priority
669
set_default_priority.argtypes = [session_t]
670
set_default_priority.restype = _error_code
671
672
record_send = _library.gnutls_record_send
673
record_send.argtypes = [session_t, ctypes.c_void_p,
674
ctypes.c_size_t]
675
record_send.restype = ctypes.c_ssize_t
676
record_send.errcheck = _retry_on_error
677
678
certificate_allocate_credentials = (
679
_library.gnutls_certificate_allocate_credentials)
680
certificate_allocate_credentials.argtypes = [
681
ctypes.POINTER(certificate_credentials_t)]
682
certificate_allocate_credentials.restype = _error_code
683
684
certificate_free_credentials = (
685
_library.gnutls_certificate_free_credentials)
686
certificate_free_credentials.argtypes = [
687
certificate_credentials_t]
688
certificate_free_credentials.restype = None
689
690
handshake_set_private_extensions = (
691
_library.gnutls_handshake_set_private_extensions)
692
handshake_set_private_extensions.argtypes = [session_t,
693
ctypes.c_int]
694
handshake_set_private_extensions.restype = None
695
696
credentials_set = _library.gnutls_credentials_set
697
credentials_set.argtypes = [session_t, credentials_type_t,
698
ctypes.c_void_p]
699
credentials_set.restype = _error_code
700
701
strerror = _library.gnutls_strerror
702
strerror.argtypes = [ctypes.c_int]
703
strerror.restype = ctypes.c_char_p
704
705
certificate_type_get = _library.gnutls_certificate_type_get
706
certificate_type_get.argtypes = [session_t]
707
certificate_type_get.restype = _error_code
708
709
certificate_get_peers = _library.gnutls_certificate_get_peers
710
certificate_get_peers.argtypes = [session_t,
711
ctypes.POINTER(ctypes.c_uint)]
712
certificate_get_peers.restype = ctypes.POINTER(datum_t)
713
714
global_set_log_level = _library.gnutls_global_set_log_level
715
global_set_log_level.argtypes = [ctypes.c_int]
716
global_set_log_level.restype = None
717
718
global_set_log_function = _library.gnutls_global_set_log_function
719
global_set_log_function.argtypes = [log_func]
720
global_set_log_function.restype = None
721
722
deinit = _library.gnutls_deinit
723
deinit.argtypes = [session_t]
724
deinit.restype = None
725
726
handshake = _library.gnutls_handshake
727
handshake.argtypes = [session_t]
728
handshake.restype = _error_code
729
handshake.errcheck = _retry_on_error
730
731
transport_set_ptr = _library.gnutls_transport_set_ptr
732
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
733
transport_set_ptr.restype = None
734
735
bye = _library.gnutls_bye
736
bye.argtypes = [session_t, close_request_t]
737
bye.restype = _error_code
738
bye.errcheck = _retry_on_error
739
740
check_version = _library.gnutls_check_version
741
check_version.argtypes = [ctypes.c_char_p]
742
check_version.restype = ctypes.c_char_p
743
744
_need_version = b"3.3.0"
745
if check_version(_need_version) is None:
746
raise self.Error("Needs GnuTLS {} or later"
747
.format(_need_version))
748
749
_tls_rawpk_version = b"3.6.6"
750
has_rawpk = bool(check_version(_tls_rawpk_version))
751
752
if has_rawpk:
753
# Types
754
class pubkey_st(ctypes.Structure):
755
_fields = []
756
pubkey_t = ctypes.POINTER(pubkey_st)
757
758
x509_crt_fmt_t = ctypes.c_int
759
760
# All the function declarations below are from gnutls/abstract.h
761
pubkey_init = _library.gnutls_pubkey_init
762
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
763
pubkey_init.restype = _error_code
764
765
pubkey_import = _library.gnutls_pubkey_import
766
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
767
x509_crt_fmt_t]
768
pubkey_import.restype = _error_code
769
770
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
771
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
772
ctypes.POINTER(ctypes.c_ubyte),
773
ctypes.POINTER(ctypes.c_size_t)]
774
pubkey_get_key_id.restype = _error_code
775
776
pubkey_deinit = _library.gnutls_pubkey_deinit
777
pubkey_deinit.argtypes = [pubkey_t]
778
pubkey_deinit.restype = None
779
else:
780
# All the function declarations below are from gnutls/openpgp.h
781
782
openpgp_crt_init = _library.gnutls_openpgp_crt_init
783
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
784
openpgp_crt_init.restype = _error_code
785
786
openpgp_crt_import = _library.gnutls_openpgp_crt_import
787
openpgp_crt_import.argtypes = [openpgp_crt_t,
788
ctypes.POINTER(datum_t),
789
openpgp_crt_fmt_t]
790
openpgp_crt_import.restype = _error_code
791
792
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
793
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
794
ctypes.POINTER(ctypes.c_uint)]
795
openpgp_crt_verify_self.restype = _error_code
796
797
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
798
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
799
openpgp_crt_deinit.restype = None
800
801
openpgp_crt_get_fingerprint = (
802
_library.gnutls_openpgp_crt_get_fingerprint)
803
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
804
ctypes.c_void_p,
805
ctypes.POINTER(
806
ctypes.c_size_t)]
807
openpgp_crt_get_fingerprint.restype = _error_code
808
809
if check_version(b"3.6.4"):
810
certificate_type_get2 = _library.gnutls_certificate_type_get2
811
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
812
certificate_type_get2.restype = _error_code
813
814
# Remove non-public functions
815
del _error_code, _retry_on_error
816
817
818
def call_pipe(connection, # : multiprocessing.Connection
819
func, *args, **kwargs):
820
"""This function is meant to be called by multiprocessing.Process
821
822
This function runs func(*args, **kwargs), and writes the resulting
823
return value on the provided multiprocessing.Connection.
824
"""
825
connection.send(func(*args, **kwargs))
826
connection.close()
827
828
829
class Client:
259
class Client(object):
830
260
"""A representation of a client host served by this server.
831
261
832
262
Attributes:
833
approved: bool(); 'None' if not yet approved/disapproved
263
_approved: bool(); 'None' if not yet approved/disapproved
834
264
approval_delay: datetime.timedelta(); Time to wait for approval
835
265
approval_duration: datetime.timedelta(); Duration of one approval
836
checker: multiprocessing.Process(); a running checker process used
837
to see if the client lives. 'None' if no process is
838
running.
839
checker_callback_tag: a GLib event source tag, or None
266
checker: subprocess.Popen(); a running checker process used
267
to see if the client lives.
268
'None' if no process is running.
269
checker_callback_tag: a gobject event source tag, or None
840
270
checker_command: string; External command which is run to check
841
271
if client lives. %() expansions are done at
842
272
runtime with vars(self) as dict, so that for
843
273
instance %(name)s can be used in the command.
844
checker_initiator_tag: a GLib event source tag, or None
274
checker_initiator_tag: a gobject event source tag, or None
845
275
created: datetime.datetime(); (UTC) object creation
846
client_structure: Object describing what attributes a client has
847
and is used for storing the client at exit
848
276
current_checker_command: string; current running checker_command
849
disable_initiator_tag: a GLib event source tag, or None
277
disable_hook: If set, called by disable() as disable_hook(self)
278
disable_initiator_tag: a gobject event source tag, or None
850
279
enabled: bool()
851
280
fingerprint: string (40 or 32 hexadecimal digits); used to
852
uniquely identify an OpenPGP client
853
key_id: string (64 hexadecimal digits); used to uniquely identify
854
a client using raw public keys
281
uniquely identify the client
855
282
host: string; available for use by the checker command
856
283
interval: datetime.timedelta(); How often to start a new checker
857
284
last_approval_request: datetime.datetime(); (UTC) or None
858
285
last_checked_ok: datetime.datetime(); (UTC) or None
859
last_checker_status: integer between 0 and 255 reflecting exit
860
status of last checker. -1 reflects crashed
861
checker, -2 means no checker completed yet.
862
last_checker_signal: The signal which killed the last checker, if
863
last_checker_status is -1
864
last_enabled: datetime.datetime(); (UTC) or None
286
last_enabled: datetime.datetime(); (UTC)
865
287
name: string; from the config file, used in log messages and
866
288
D-Bus identifiers
867
289
secret: bytestring; sent verbatim (over TLS) to client
868
290
timeout: datetime.timedelta(); How long from last_checked_ok
869
291
until this client is disabled
870
extended_timeout: extra long timeout when secret has been sent
871
292
runtime_expansions: Allowed attributes for runtime expansion.
872
expires: datetime.datetime(); time (UTC) when a client will be
873
disabled, or None
874
server_settings: The server_settings dict from main()
875
293
"""
876
294
877
295
runtime_expansions = ("approval_delay", "approval_duration",
878
"created", "enabled", "expires", "key_id",
879
"fingerprint", "host", "interval",
880
"last_approval_request", "last_checked_ok",
296
"created", "enabled", "fingerprint",
297
"host", "interval", "last_checked_ok",
881
298
"last_enabled", "name", "timeout")
882
client_defaults = {
883
"timeout": "PT5M",
884
"extended_timeout": "PT15M",
885
"interval": "PT2M",
886
"checker": "fping -q -- %%(host)s",
887
"host": "",
888
"approval_delay": "PT0S",
889
"approval_duration": "PT1S",
890
"approved_by_default": "True",
891
"enabled": "True",
892
}
893
299
894
300
@staticmethod
895
def config_parser(config):
896
"""Construct a new dict of client settings of this form:
897
{ client_name: {setting_name: value, ...}, ...}
898
with exceptions for any special settings as defined above.
899
NOTE: Must be a pure function. Must return the same result
900
value given the same arguments.
901
"""
902
settings = {}
903
for client_name in config.sections():
904
section = dict(config.items(client_name))
905
client = settings[client_name] = {}
906
907
client["host"] = section["host"]
908
# Reformat values from string types to Python types
909
client["approved_by_default"] = config.getboolean(
910
client_name, "approved_by_default")
911
client["enabled"] = config.getboolean(client_name,
912
"enabled")
913
914
# Uppercase and remove spaces from key_id and fingerprint
915
# for later comparison purposes with return value from the
916
# key_id() and fingerprint() functions
917
client["key_id"] = (section.get("key_id", "").upper()
918
.replace(" ", ""))
919
client["fingerprint"] = (section["fingerprint"].upper()
920
.replace(" ", ""))
921
if "secret" in section:
922
client["secret"] = codecs.decode(section["secret"]
923
.encode("utf-8"),
924
"base64")
925
elif "secfile" in section:
926
with open(os.path.expanduser(os.path.expandvars
927
(section["secfile"])),
928
"rb") as secfile:
929
client["secret"] = secfile.read()
930
else:
931
raise TypeError("No secret or secfile for section {}"
932
.format(section))
933
client["timeout"] = string_to_delta(section["timeout"])
934
client["extended_timeout"] = string_to_delta(
935
section["extended_timeout"])
936
client["interval"] = string_to_delta(section["interval"])
937
client["approval_delay"] = string_to_delta(
938
section["approval_delay"])
939
client["approval_duration"] = string_to_delta(
940
section["approval_duration"])
941
client["checker_command"] = section["checker"]
942
client["last_approval_request"] = None
943
client["last_checked_ok"] = None
944
client["last_checker_status"] = -2
945
946
return settings
947
948
def __init__(self, settings, name=None, server_settings=None):
301
def _timedelta_to_milliseconds(td):
302
"Convert a datetime.timedelta() to milliseconds"
303
return ((td.days * 24 * 60 * 60 * 1000)
304
+ (td.seconds * 1000)
305
+ (td.microseconds // 1000))
306
307
def timeout_milliseconds(self):
308
"Return the 'timeout' attribute in milliseconds"
309
return self._timedelta_to_milliseconds(self.timeout)
310
311
def interval_milliseconds(self):
312
"Return the 'interval' attribute in milliseconds"
313
return self._timedelta_to_milliseconds(self.interval)
314
315
def approval_delay_milliseconds(self):
316
return self._timedelta_to_milliseconds(self.approval_delay)
317
318
def __init__(self, name = None, disable_hook=None, config=None):
319
"""Note: the 'checker' key in 'config' sets the
320
'checker_command' attribute and *not* the 'checker'
321
attribute."""
949
322
self.name = name
950
if server_settings is None:
951
server_settings = {}
952
self.server_settings = server_settings
953
# adding all client settings
954
for setting, value in settings.items():
955
setattr(self, setting, value)
956
957
if self.enabled:
958
if not hasattr(self, "last_enabled"):
959
self.last_enabled = datetime.datetime.utcnow()
960
if not hasattr(self, "expires"):
961
self.expires = (datetime.datetime.utcnow()
962
+ self.timeout)
963
else:
964
self.last_enabled = None
965
self.expires = None
966
323
if config is None:
324
config = {}
967
325
logger.debug("Creating client %r", self.name)
968
logger.debug(" Key ID: %s", self.key_id)
326
# Uppercase and remove spaces from fingerprint for later
327
# comparison purposes with return value from the fingerprint()
328
# function
329
self.fingerprint = (config["fingerprint"].upper()
330
.replace(" ", ""))
969
331
logger.debug(" Fingerprint: %s", self.fingerprint)
970
self.created = settings.get("created",
971
datetime.datetime.utcnow())
972
973
# attributes specific for this server instance
332
if "secret" in config:
333
self.secret = config["secret"].decode("base64")
334
elif "secfile" in config:
335
with open(os.path.expanduser(os.path.expandvars
336
(config["secfile"])),
337
"rb") as secfile:
338
self.secret = secfile.read()
339
else:
340
raise TypeError("No secret or secfile for client %s"
341
% self.name)
342
self.host = config.get("host", "")
343
self.created = datetime.datetime.utcnow()
344
self.enabled = False
345
self.last_approval_request = None
346
self.last_enabled = None
347
self.last_checked_ok = None
348
self.timeout = string_to_delta(config["timeout"])
349
self.interval = string_to_delta(config["interval"])
350
self.disable_hook = disable_hook
974
351
self.checker = None
975
352
self.checker_initiator_tag = None
976
353
self.disable_initiator_tag = None
977
354
self.checker_callback_tag = None
355
self.checker_command = config["checker"]
978
356
self.current_checker_command = None
979
self.approved = None
357
self.last_connect = None
358
self._approved = None
359
self.approved_by_default = config.get("approved_by_default",
360
True)
980
361
self.approvals_pending = 0
981
self.changedstate = multiprocessing_manager.Condition(
982
multiprocessing_manager.Lock())
983
self.client_structure = [attr
984
for attr in self.__dict__.keys()
985
if not attr.startswith("_")]
986
self.client_structure.append("client_structure")
987
988
for name, t in inspect.getmembers(
989
type(self), lambda obj: isinstance(obj, property)):
990
if not name.startswith("_"):
991
self.client_structure.append(name)
992
993
# Send notice to process children that client state has changed
362
self.approval_delay = string_to_delta(
363
config["approval_delay"])
364
self.approval_duration = string_to_delta(
365
config["approval_duration"])
366
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
367
994
368
def send_changedstate(self):
995
with self.changedstate:
996
self.changedstate.notify_all()
997
369
self.changedstate.acquire()
370
self.changedstate.notify_all()
371
self.changedstate.release()
372
998
373
def enable(self):
999
374
"""Start this client's checker and timeout hooks"""
1000
375
if getattr(self, "enabled", False):
1001
376
# Already enabled
1002
377
return
1003
self.expires = datetime.datetime.utcnow() + self.timeout
1004
self.enabled = True
378
self.send_changedstate()
1005
379
self.last_enabled = datetime.datetime.utcnow()
1006
self.init_checker()
1007
self.send_changedstate()
1008
380
# Schedule a new checker to be started an 'interval' from now,
381
# and every interval from then on.
382
self.checker_initiator_tag = (gobject.timeout_add
383
(self.interval_milliseconds(),
384
self.start_checker))
385
# Schedule a disable() when 'timeout' has passed
386
self.disable_initiator_tag = (gobject.timeout_add
387
(self.timeout_milliseconds(),
388
self.disable))
389
self.enabled = True
390
# Also start a new checker *right now*.
391
self.start_checker()
392
1009
393
def disable(self, quiet=True):
1010
394
"""Disable this client."""
1011
395
if not getattr(self, "enabled", False):
1012
396
return False
1013
397
if not quiet:
398
self.send_changedstate()
399
if not quiet:
1014
400
logger.info("Disabling client %s", self.name)
1015
if getattr(self, "disable_initiator_tag", None) is not None:
1016
GLib.source_remove(self.disable_initiator_tag)
401
if getattr(self, "disable_initiator_tag", False):
402
gobject.source_remove(self.disable_initiator_tag)
1017
403
self.disable_initiator_tag = None
1018
self.expires = None
1019
if getattr(self, "checker_initiator_tag", None) is not None:
1020
GLib.source_remove(self.checker_initiator_tag)
404
if getattr(self, "checker_initiator_tag", False):
405
gobject.source_remove(self.checker_initiator_tag)
1021
406
self.checker_initiator_tag = None
1022
407
self.stop_checker()
408
if self.disable_hook:
409
self.disable_hook(self)
1023
410
self.enabled = False
1024
if not quiet:
1025
self.send_changedstate()
1026
# Do not run this again if called by a GLib.timeout_add
411
# Do not run this again if called by a gobject.timeout_add
1027
412
return False
1028
413
1029
414
def __del__(self):
415
self.disable_hook = None
1030
416
self.disable()
1031
1032
def init_checker(self):
1033
# Schedule a new checker to be started an 'interval' from now,
1034
# and every interval from then on.
1035
if self.checker_initiator_tag is not None:
1036
GLib.source_remove(self.checker_initiator_tag)
1037
self.checker_initiator_tag = GLib.timeout_add(
1038
int(self.interval.total_seconds() * 1000),
1039
self.start_checker)
1040
# Schedule a disable() when 'timeout' has passed
1041
if self.disable_initiator_tag is not None:
1042
GLib.source_remove(self.disable_initiator_tag)
1043
self.disable_initiator_tag = GLib.timeout_add(
1044
int(self.timeout.total_seconds() * 1000), self.disable)
1045
# Also start a new checker *right now*.
1046
self.start_checker()
1047
1048
def checker_callback(self, source, condition, connection,
1049
command):
417
418
def checker_callback(self, pid, condition, command):
1050
419
"""The checker has completed, so take appropriate actions."""
1051
# Read return code from connection (see call_pipe)
1052
returncode = connection.recv()
1053
connection.close()
1054
if self.checker is not None:
1055
self.checker.join()
1056
420
self.checker_callback_tag = None
1057
421
self.checker = None
1058
1059
if returncode >= 0:
1060
self.last_checker_status = returncode
1061
self.last_checker_signal = None
1062
if self.last_checker_status == 0:
422
if os.WIFEXITED(condition):
423
exitstatus = os.WEXITSTATUS(condition)
424
if exitstatus == 0:
1063
425
logger.info("Checker for %(name)s succeeded",
1064
426
vars(self))
1065
427
self.checked_ok()
1066
428
else:
1067
logger.info("Checker for %(name)s failed", vars(self))
429
logger.info("Checker for %(name)s failed",
430
vars(self))
1068
431
else:
1069
self.last_checker_status = -1
1070
self.last_checker_signal = -returncode
1071
432
logger.warning("Checker for %(name)s crashed?",
1072
433
vars(self))
1073
return False
1074
434
1075
435
def checked_ok(self):
1076
"""Assert that the client has been seen, alive and well."""
436
"""Bump up the timeout for this client.
437
438
This should only be called when the client has been seen,
439
alive and well.
440
"""
1077
441
self.last_checked_ok = datetime.datetime.utcnow()
1078
self.last_checker_status = 0
1079
self.last_checker_signal = None
1080
self.bump_timeout()
1081
1082
def bump_timeout(self, timeout=None):
1083
"""Bump up the timeout for this client."""
1084
if timeout is None:
1085
timeout = self.timeout
1086
if self.disable_initiator_tag is not None:
1087
GLib.source_remove(self.disable_initiator_tag)
1088
self.disable_initiator_tag = None
1089
if getattr(self, "enabled", False):
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(timeout.total_seconds() * 1000), self.disable)
1092
self.expires = datetime.datetime.utcnow() + timeout
1093
442
gobject.source_remove(self.disable_initiator_tag)
443
self.disable_initiator_tag = (gobject.timeout_add
444
(self.timeout_milliseconds(),
445
self.disable))
446
1094
447
def need_approval(self):
1095
448
self.last_approval_request = datetime.datetime.utcnow()
1096
449
1097
450
def start_checker(self):
1098
451
"""Start a new checker subprocess if one is not running.
1099
452
1100
453
If a checker already exists, leave it running and do
1101
454
nothing."""
1102
455
# The reason for not killing a running checker is that if we
1103
# did that, and if a checker (for some reason) started running
1104
# slowly and taking more than 'interval' time, then the client
1105
# would inevitably timeout, since no checker would get a
1106
# chance to run to completion. If we instead leave running
456
# did that, then if a checker (for some reason) started
457
# running slowly and taking more than 'interval' time, the
458
# client would inevitably timeout, since no checker would get
459
# a chance to run to completion. If we instead leave running
1107
460
# checkers alone, the checker would have to take more time
1108
461
# than 'timeout' for the client to be disabled, which is as it
1109
462
# should be.
1110
1111
if self.checker is not None and not self.checker.is_alive():
1112
logger.warning("Checker was not alive; joining")
1113
self.checker.join()
1114
self.checker = None
463
464
# If a checker exists, make sure it is not a zombie
465
try:
466
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
467
except (AttributeError, OSError) as error:
468
if (isinstance(error, OSError)
469
and error.errno != errno.ECHILD):
470
raise error
471
else:
472
if pid:
473
logger.warning("Checker was a zombie")
474
gobject.source_remove(self.checker_callback_tag)
475
self.checker_callback(pid, status,
476
self.current_checker_command)
1115
477
# Start a new checker if needed
1116
478
if self.checker is None:
1117
# Escape attributes for the shell
1118
escaped_attrs = {
1119
attr: re.escape(str(getattr(self, attr)))
1120
for attr in self.runtime_expansions}
1121
479
try:
1122
command = self.checker_command % escaped_attrs
1123
except TypeError as error:
1124
logger.error('Could not format string "%s"',
1125
self.checker_command,
1126
exc_info=error)
1127
return True # Try again later
480
# In case checker_command has exactly one % operator
481
command = self.checker_command % self.host
482
except TypeError:
483
# Escape attributes for the shell
484
escaped_attrs = dict(
485
(attr,
486
re.escape(unicode(str(getattr(self, attr, "")),
487
errors=
488
'replace')))
489
for attr in
490
self.runtime_expansions)
491
492
try:
493
command = self.checker_command % escaped_attrs
494
except TypeError as error:
495
logger.error('Could not format string "%s":'
496
' %s', self.checker_command, error)
497
return True # Try again later
1128
498
self.current_checker_command = command
1129
logger.info("Starting checker %r for %s", command,
1130
self.name)
1131
# We don't need to redirect stdout and stderr, since
1132
# in normal mode, that is already done by daemon(),
1133
# and in debug mode we don't want to. (Stdin is
1134
# always replaced by /dev/null.)
1135
# The exception is when not debugging but nevertheless
1136
# running in the foreground; use the previously
1137
# created wnull.
1138
popen_args = {"close_fds": True,
1139
"shell": True,
1140
"cwd": "/"}
1141
if (not self.server_settings["debug"]
1142
and self.server_settings["foreground"]):
1143
popen_args.update({"stdout": wnull,
1144
"stderr": wnull})
1145
pipe = multiprocessing.Pipe(duplex=False)
1146
self.checker = multiprocessing.Process(
1147
target=call_pipe,
1148
args=(pipe[1], subprocess.call, command),
1149
kwargs=popen_args)
1150
self.checker.start()
1151
self.checker_callback_tag = GLib.io_add_watch(
1152
GLib.IOChannel.unix_new(pipe[0].fileno()),
1153
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1154
self.checker_callback, pipe[0], command)
1155
# Re-run this periodically if run by GLib.timeout_add
499
try:
500
logger.info("Starting checker %r for %s",
501
command, self.name)
502
# We don't need to redirect stdout and stderr, since
503
# in normal mode, that is already done by daemon(),
504
# and in debug mode we don't want to. (Stdin is
505
# always replaced by /dev/null.)
506
self.checker = subprocess.Popen(command,
507
close_fds=True,
508
shell=True, cwd="/")
509
self.checker_callback_tag = (gobject.child_watch_add
510
(self.checker.pid,
511
self.checker_callback,
512
data=command))
513
# The checker may have completed before the gobject
514
# watch was added. Check for this.
515
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
516
if pid:
517
gobject.source_remove(self.checker_callback_tag)
518
self.checker_callback(pid, status, command)
519
except OSError as error:
520
logger.error("Failed to start subprocess: %s",
521
error)
522
# Re-run this periodically if run by gobject.timeout_add
1156
523
return True
1157
524
1158
525
def stop_checker(self):
1159
526
"""Force the checker process, if any, to stop."""
1160
527
if self.checker_callback_tag:
1161
GLib.source_remove(self.checker_callback_tag)
528
gobject.source_remove(self.checker_callback_tag)
1162
529
self.checker_callback_tag = None
1163
530
if getattr(self, "checker", None) is None:
1164
531
return
1165
532
logger.debug("Stopping checker for %(name)s", vars(self))
1166
self.checker.terminate()
533
try:
534
os.kill(self.checker.pid, signal.SIGTERM)
535
#time.sleep(0.5)
536
#if self.checker.poll() is None:
537
# os.kill(self.checker.pid, signal.SIGKILL)
538
except OSError as error:
539
if error.errno != errno.ESRCH: # No such process
540
raise
1167
541
self.checker = None
1168
542
1169
1170
def dbus_service_property(dbus_interface,
1171
signature="v",
1172
access="readwrite",
1173
byte_arrays=False):
543
def dbus_service_property(dbus_interface, signature="v",
544
access="readwrite", byte_arrays=False):
1174
545
"""Decorators for marking methods of a DBusObjectWithProperties to
1175
546
become properties on the D-Bus.
1176
547
1177
548
The decorated method will be called with no arguments by "Get"
1178
549
and with one argument by "Set".
1179
550
1180
551
The parameters, where they are supported, are the same as
1181
552
dbus.service.method, except there is only "signature", since the
1182
553
type from Get() and the type sent to Set() is the same.
1185
556
# "Set" method, so we fail early here:
1186
557
if byte_arrays and signature != "ay":
1187
558
raise ValueError("Byte arrays not supported for non-'ay'"
1188
" signature {!r}".format(signature))
1189
559
" signature %r" % signature)
1190
560
def decorator(func):
1191
561
func._dbus_is_property = True
1192
562
func._dbus_interface = dbus_interface
1195
565
func._dbus_name = func.__name__
1196
566
if func._dbus_name.endswith("_dbus_property"):
1197
567
func._dbus_name = func._dbus_name[:-14]
1198
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1199
return func
1200
1201
return decorator
1202
1203
1204
def dbus_interface_annotations(dbus_interface):
1205
"""Decorator for marking functions returning interface annotations
1206
1207
Usage:
1208
1209
@dbus_interface_annotations("org.example.Interface")
1210
def _foo(self): # Function name does not matter
1211
return {"org.freedesktop.DBus.Deprecated": "true",
1212
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1213
"false"}
1214
"""
1215
1216
def decorator(func):
1217
func._dbus_is_interface = True
1218
func._dbus_interface = dbus_interface
1219
func._dbus_name = dbus_interface
1220
return func
1221
1222
return decorator
1223
1224
1225
def dbus_annotations(annotations):
1226
"""Decorator to annotate D-Bus methods, signals or properties
1227
Usage:
1228
1229
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property."
1231
"EmitsChangedSignal": "false"})
1232
@dbus_service_property("org.example.Interface", signature="b",
1233
access="r")
1234
def Property_dbus_property(self):
1235
return dbus.Boolean(False)
1236
1237
See also the DBusObjectWithAnnotations class.
1238
"""
1239
1240
def decorator(func):
1241
func._dbus_annotations = annotations
1242
return func
1243
568
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
569
return func
1244
570
return decorator
1245
571
1246
572
1247
573
class DBusPropertyException(dbus.exceptions.DBusException):
1248
574
"""A base class for D-Bus property-related exceptions
1249
575
"""
1250
pass
576
def __unicode__(self):
577
return unicode(str(self))
1251
578
1252
579
1253
580
class DBusPropertyAccessException(DBusPropertyException):
1262
589
pass
1263
590
1264
591
1265
class DBusObjectWithAnnotations(dbus.service.Object):
1266
"""A D-Bus object with annotations.
1267
1268
Classes inheriting from this can use the dbus_annotations
1269
decorator to add annotations to methods or signals.
1270
"""
1271
1272
@staticmethod
1273
def _is_dbus_thing(thing):
1274
"""Returns a function testing if an attribute is a D-Bus thing
1275
1276
If called like _is_dbus_thing("method") it returns a function
1277
suitable for use as predicate to inspect.getmembers().
1278
"""
1279
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1280
False)
1281
1282
def _get_all_dbus_things(self, thing):
1283
"""Returns a generator of (name, attribute) pairs
1284
"""
1285
return ((getattr(athing.__get__(self), "_dbus_name", name),
1286
athing.__get__(self))
1287
for cls in self.__class__.__mro__
1288
for name, athing in
1289
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1290
1291
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1292
out_signature="s",
1293
path_keyword='object_path',
1294
connection_keyword='connection')
1295
def Introspect(self, object_path, connection):
1296
"""Overloading of standard D-Bus method.
1297
1298
Inserts annotation tags on methods and signals.
1299
"""
1300
xmlstring = dbus.service.Object.Introspect(self, object_path,
1301
connection)
1302
try:
1303
document = xml.dom.minidom.parseString(xmlstring)
1304
1305
for if_tag in document.getElementsByTagName("interface"):
1306
# Add annotation tags
1307
for typ in ("method", "signal"):
1308
for tag in if_tag.getElementsByTagName(typ):
1309
annots = dict()
1310
for name, prop in (self.
1311
_get_all_dbus_things(typ)):
1312
if (name == tag.getAttribute("name")
1313
and prop._dbus_interface
1314
== if_tag.getAttribute("name")):
1315
annots.update(getattr(
1316
prop, "_dbus_annotations", {}))
1317
for name, value in annots.items():
1318
ann_tag = document.createElement(
1319
"annotation")
1320
ann_tag.setAttribute("name", name)
1321
ann_tag.setAttribute("value", value)
1322
tag.appendChild(ann_tag)
1323
# Add interface annotation tags
1324
for annotation, value in dict(
1325
itertools.chain.from_iterable(
1326
annotations().items()
1327
for name, annotations
1328
in self._get_all_dbus_things("interface")
1329
if name == if_tag.getAttribute("name")
1330
)).items():
1331
ann_tag = document.createElement("annotation")
1332
ann_tag.setAttribute("name", annotation)
1333
ann_tag.setAttribute("value", value)
1334
if_tag.appendChild(ann_tag)
1335
# Fix argument name for the Introspect method itself
1336
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
1338
for cn in if_tag.getElementsByTagName("method"):
1339
if cn.getAttribute("name") == "Introspect":
1340
for arg in cn.getElementsByTagName("arg"):
1341
if (arg.getAttribute("direction")
1342
== "out"):
1343
arg.setAttribute("name",
1344
"xml_data")
1345
xmlstring = document.toxml("utf-8")
1346
document.unlink()
1347
except (AttributeError, xml.dom.DOMException,
1348
xml.parsers.expat.ExpatError) as error:
1349
logger.error("Failed to override Introspection method",
1350
exc_info=error)
1351
return xmlstring
1352
1353
1354
class DBusObjectWithProperties(DBusObjectWithAnnotations):
592
class DBusObjectWithProperties(dbus.service.Object):
1355
593
"""A D-Bus object with properties.
1356
594
1357
595
Classes inheriting from this can use the dbus_service_property
1358
596
decorator to expose methods as D-Bus properties. It exposes the
1359
597
standard Get(), Set(), and GetAll() methods on the D-Bus.
1360
598
"""
1361
599
600
@staticmethod
601
def _is_dbus_property(obj):
602
return getattr(obj, "_dbus_is_property", False)
603
604
def _get_all_dbus_properties(self):
605
"""Returns a generator of (name, attribute) pairs
606
"""
607
return ((prop._dbus_name, prop)
608
for name, prop in
609
inspect.getmembers(self, self._is_dbus_property))
610
1362
611
def _get_dbus_property(self, interface_name, property_name):
1363
612
"""Returns a bound method if one exists which is a D-Bus
1364
613
property with the specified name and interface.
1365
614
"""
1366
for cls in self.__class__.__mro__:
1367
for name, value in inspect.getmembers(
1368
cls, self._is_dbus_thing("property")):
1369
if (value._dbus_name == property_name
1370
and value._dbus_interface == interface_name):
1371
return value.__get__(self)
1372
615
for name in (property_name,
616
property_name + "_dbus_property"):
617
prop = getattr(self, name, None)
618
if (prop is None
619
or not self._is_dbus_property(prop)
620
or prop._dbus_name != property_name
621
or (interface_name and prop._dbus_interface
622
and interface_name != prop._dbus_interface)):
623
continue
624
return prop
1373
625
# No such property
1374
raise DBusPropertyNotFound("{}:{}.{}".format(
1375
self.dbus_object_path, interface_name, property_name))
1376
1377
@classmethod
1378
def _get_all_interface_names(cls):
1379
"""Get a sequence of all interfaces supported by an object"""
1380
return (name for name in set(getattr(getattr(x, attr),
1381
"_dbus_interface", None)
1382
for x in (inspect.getmro(cls))
1383
for attr in dir(x))
1384
if name is not None)
1385
1386
@dbus.service.method(dbus.PROPERTIES_IFACE,
1387
in_signature="ss",
626
raise DBusPropertyNotFound(self.dbus_object_path + ":"
627
+ interface_name + "."
628
+ property_name)
629
630
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1388
631
out_signature="v")
1389
632
def Get(self, interface_name, property_name):
1390
633
"""Standard D-Bus property Get() method, see D-Bus standard.
1396
639
if not hasattr(value, "variant_level"):
1397
640
return value
1398
641
return type(value)(value, variant_level=value.variant_level+1)
1399
642
1400
643
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1401
644
def Set(self, interface_name, property_name, value):
1402
645
"""Standard D-Bus property Set() method, see D-Bus standard.
1408
651
# The byte_arrays option is not supported yet on
1409
652
# signatures other than "ay".
1410
653
if prop._dbus_signature != "ay":
1411
raise ValueError("Byte arrays not supported for non-"
1412
"'ay' signature {!r}"
1413
.format(prop._dbus_signature))
1414
value = dbus.ByteArray(bytes(value))
654
raise ValueError
655
value = dbus.ByteArray(''.join(unichr(byte)
656
for byte in value))
1415
657
prop(value)
1416
1417
@dbus.service.method(dbus.PROPERTIES_IFACE,
1418
in_signature="s",
658
659
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1419
660
out_signature="a{sv}")
1420
661
def GetAll(self, interface_name):
1421
662
"""Standard D-Bus property GetAll() method, see D-Bus
1423
664
1424
665
Note: Will not include properties with access="write".
1425
666
"""
1426
properties = {}
1427
for name, prop in self._get_all_dbus_things("property"):
667
all = {}
668
for name, prop in self._get_all_dbus_properties():
1428
669
if (interface_name
1429
670
and interface_name != prop._dbus_interface):
1430
671
# Interface non-empty but did not match
1434
675
continue
1435
676
value = prop()
1436
677
if not hasattr(value, "variant_level"):
1437
properties[name] = value
678
all[name] = value
1438
679
continue
1439
properties[name] = type(value)(
1440
value, variant_level=value.variant_level + 1)
1441
return dbus.Dictionary(properties, signature="sv")
1442
1443
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1444
def PropertiesChanged(self, interface_name, changed_properties,
1445
invalidated_properties):
1446
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1447
standard.
1448
"""
1449
pass
1450
680
all[name] = type(value)(value, variant_level=
681
value.variant_level+1)
682
return dbus.Dictionary(all, signature="sv")
683
1451
684
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1452
685
out_signature="s",
1453
686
path_keyword='object_path',
1454
687
connection_keyword='connection')
1455
688
def Introspect(self, object_path, connection):
1456
"""Overloading of standard D-Bus method.
1457
1458
Inserts property tags and interface annotation tags.
689
"""Standard D-Bus method, overloaded to insert property tags.
1459
690
"""
1460
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1461
object_path,
1462
connection)
691
xmlstring = dbus.service.Object.Introspect(self, object_path,
692
connection)
1463
693
try:
1464
694
document = xml.dom.minidom.parseString(xmlstring)
1465
1466
695
def make_tag(document, name, prop):
1467
696
e = document.createElement("property")
1468
697
e.setAttribute("name", name)
1469
698
e.setAttribute("type", prop._dbus_signature)
1470
699
e.setAttribute("access", prop._dbus_access)
1471
700
return e
1472
1473
701
for if_tag in document.getElementsByTagName("interface"):
1474
# Add property tags
1475
702
for tag in (make_tag(document, name, prop)
1476
703
for name, prop
1477
in self._get_all_dbus_things("property")
704
in self._get_all_dbus_properties()
1478
705
if prop._dbus_interface
1479
706
== if_tag.getAttribute("name")):
1480
707
if_tag.appendChild(tag)
1481
# Add annotation tags for properties
1482
for tag in if_tag.getElementsByTagName("property"):
1483
annots = dict()
1484
for name, prop in self._get_all_dbus_things(
1485
"property"):
1486
if (name == tag.getAttribute("name")
1487
and prop._dbus_interface
1488
== if_tag.getAttribute("name")):
1489
annots.update(getattr(
1490
prop, "_dbus_annotations", {}))
1491
for name, value in annots.items():
1492
ann_tag = document.createElement(
1493
"annotation")
1494
ann_tag.setAttribute("name", name)
1495
ann_tag.setAttribute("value", value)
1496
tag.appendChild(ann_tag)
1497
708
# Add the names to the return values for the
1498
709
# "org.freedesktop.DBus.Properties" methods
1499
710
if (if_tag.getAttribute("name")
1514
725
except (AttributeError, xml.dom.DOMException,
1515
726
xml.parsers.expat.ExpatError) as error:
1516
727
logger.error("Failed to override Introspection method",
1517
exc_info=error)
1518
return xmlstring
1519
1520
1521
try:
1522
dbus.OBJECT_MANAGER_IFACE
1523
except AttributeError:
1524
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1525
1526
1527
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1528
"""A D-Bus object with an ObjectManager.
1529
1530
Classes inheriting from this exposes the standard
1531
GetManagedObjects call and the InterfacesAdded and
1532
InterfacesRemoved signals on the standard
1533
"org.freedesktop.DBus.ObjectManager" interface.
1534
1535
Note: No signals are sent automatically; they must be sent
1536
manually.
1537
"""
1538
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1539
out_signature="a{oa{sa{sv}}}")
1540
def GetManagedObjects(self):
1541
"""This function must be overridden"""
1542
raise NotImplementedError()
1543
1544
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1545
signature="oa{sa{sv}}")
1546
def InterfacesAdded(self, object_path, interfaces_and_properties):
1547
pass
1548
1549
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1550
def InterfacesRemoved(self, object_path, interfaces):
1551
pass
1552
1553
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1554
out_signature="s",
1555
path_keyword='object_path',
1556
connection_keyword='connection')
1557
def Introspect(self, object_path, connection):
1558
"""Overloading of standard D-Bus method.
1559
1560
Override return argument name of GetManagedObjects to be
1561
"objpath_interfaces_and_properties"
1562
"""
1563
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1564
object_path,
1565
connection)
1566
try:
1567
document = xml.dom.minidom.parseString(xmlstring)
1568
1569
for if_tag in document.getElementsByTagName("interface"):
1570
# Fix argument name for the GetManagedObjects method
1571
if (if_tag.getAttribute("name")
1572
== dbus.OBJECT_MANAGER_IFACE):
1573
for cn in if_tag.getElementsByTagName("method"):
1574
if (cn.getAttribute("name")
1575
== "GetManagedObjects"):
1576
for arg in cn.getElementsByTagName("arg"):
1577
if (arg.getAttribute("direction")
1578
== "out"):
1579
arg.setAttribute(
1580
"name",
1581
"objpath_interfaces"
1582
"_and_properties")
1583
xmlstring = document.toxml("utf-8")
1584
document.unlink()
1585
except (AttributeError, xml.dom.DOMException,
1586
xml.parsers.expat.ExpatError) as error:
1587
logger.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
def datetime_to_dbus(dt, variant_level=0):
1593
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1594
if dt is None:
1595
return dbus.String("", variant_level=variant_level)
1596
return dbus.String(dt.isoformat(), variant_level=variant_level)
1597
1598
1599
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1600
"""A class decorator; applied to a subclass of
1601
dbus.service.Object, it will add alternate D-Bus attributes with
1602
interface names according to the "alt_interface_names" mapping.
1603
Usage:
1604
1605
@alternate_dbus_interfaces({"org.example.Interface":
1606
"net.example.AlternateInterface"})
1607
class SampleDBusObject(dbus.service.Object):
1608
@dbus.service.method("org.example.Interface")
1609
def SampleDBusMethod():
1610
pass
1611
1612
The above "SampleDBusMethod" on "SampleDBusObject" will be
1613
reachable via two interfaces: "org.example.Interface" and
1614
"net.example.AlternateInterface", the latter of which will have
1615
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1616
"true", unless "deprecate" is passed with a False value.
1617
1618
This works for methods and signals, and also for D-Bus properties
1619
(from DBusObjectWithProperties) and interfaces (from the
1620
dbus_interface_annotations decorator).
1621
"""
1622
1623
def wrapper(cls):
1624
for orig_interface_name, alt_interface_name in (
1625
alt_interface_names.items()):
1626
attr = {}
1627
interface_names = set()
1628
# Go though all attributes of the class
1629
for attrname, attribute in inspect.getmembers(cls):
1630
# Ignore non-D-Bus attributes, and D-Bus attributes
1631
# with the wrong interface name
1632
if (not hasattr(attribute, "_dbus_interface")
1633
or not attribute._dbus_interface.startswith(
1634
orig_interface_name)):
1635
continue
1636
# Create an alternate D-Bus interface name based on
1637
# the current name
1638
alt_interface = attribute._dbus_interface.replace(
1639
orig_interface_name, alt_interface_name)
1640
interface_names.add(alt_interface)
1641
# Is this a D-Bus signal?
1642
if getattr(attribute, "_dbus_is_signal", False):
1643
# Extract the original non-method undecorated
1644
# function by black magic
1645
if sys.version_info.major == 2:
1646
nonmethod_func = (dict(
1647
zip(attribute.func_code.co_freevars,
1648
attribute.__closure__))
1649
["func"].cell_contents)
1650
else:
1651
nonmethod_func = (dict(
1652
zip(attribute.__code__.co_freevars,
1653
attribute.__closure__))
1654
["func"].cell_contents)
1655
# Create a new, but exactly alike, function
1656
# object, and decorate it to be a new D-Bus signal
1657
# with the alternate D-Bus interface name
1658
new_function = copy_function(nonmethod_func)
1659
new_function = (dbus.service.signal(
1660
alt_interface,
1661
attribute._dbus_signature)(new_function))
1662
# Copy annotations, if any
1663
try:
1664
new_function._dbus_annotations = dict(
1665
attribute._dbus_annotations)
1666
except AttributeError:
1667
pass
1668
1669
# Define a creator of a function to call both the
1670
# original and alternate functions, so both the
1671
# original and alternate signals gets sent when
1672
# the function is called
1673
def fixscope(func1, func2):
1674
"""This function is a scope container to pass
1675
func1 and func2 to the "call_both" function
1676
outside of its arguments"""
1677
1678
@functools.wraps(func2)
1679
def call_both(*args, **kwargs):
1680
"""This function will emit two D-Bus
1681
signals by calling func1 and func2"""
1682
func1(*args, **kwargs)
1683
func2(*args, **kwargs)
1684
# Make wrapper function look like a D-Bus
1685
# signal
1686
for name, attr in inspect.getmembers(func2):
1687
if name.startswith("_dbus_"):
1688
setattr(call_both, name, attr)
1689
1690
return call_both
1691
# Create the "call_both" function and add it to
1692
# the class
1693
attr[attrname] = fixscope(attribute, new_function)
1694
# Is this a D-Bus method?
1695
elif getattr(attribute, "_dbus_is_method", False):
1696
# Create a new, but exactly alike, function
1697
# object. Decorate it to be a new D-Bus method
1698
# with the alternate D-Bus interface name. Add it
1699
# to the class.
1700
attr[attrname] = (
1701
dbus.service.method(
1702
alt_interface,
1703
attribute._dbus_in_signature,
1704
attribute._dbus_out_signature)
1705
(copy_function(attribute)))
1706
# Copy annotations, if any
1707
try:
1708
attr[attrname]._dbus_annotations = dict(
1709
attribute._dbus_annotations)
1710
except AttributeError:
1711
pass
1712
# Is this a D-Bus property?
1713
elif getattr(attribute, "_dbus_is_property", False):
1714
# Create a new, but exactly alike, function
1715
# object, and decorate it to be a new D-Bus
1716
# property with the alternate D-Bus interface
1717
# name. Add it to the class.
1718
attr[attrname] = (dbus_service_property(
1719
alt_interface, attribute._dbus_signature,
1720
attribute._dbus_access,
1721
attribute._dbus_get_args_options
1722
["byte_arrays"])
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
1730
# Is this a D-Bus interface?
1731
elif getattr(attribute, "_dbus_is_interface", False):
1732
# Create a new, but exactly alike, function
1733
# object. Decorate it to be a new D-Bus interface
1734
# with the alternate D-Bus interface name. Add it
1735
# to the class.
1736
attr[attrname] = (
1737
dbus_interface_annotations(alt_interface)
1738
(copy_function(attribute)))
1739
if deprecate:
1740
# Deprecate all alternate interfaces
1741
iname = "_AlternateDBusNames_interface_annotation{}"
1742
for interface_name in interface_names:
1743
1744
@dbus_interface_annotations(interface_name)
1745
def func(self):
1746
return {"org.freedesktop.DBus.Deprecated":
1747
"true"}
1748
# Find an unused name
1749
for aname in (iname.format(i)
1750
for i in itertools.count()):
1751
if aname not in attr:
1752
attr[aname] = func
1753
break
1754
if interface_names:
1755
# Replace the class with a new subclass of it with
1756
# methods, signals, etc. as created above.
1757
if sys.version_info.major == 2:
1758
cls = type(b"{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
else:
1761
cls = type("{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
return cls
1764
1765
return wrapper
1766
1767
1768
@alternate_dbus_interfaces({"se.recompile.Mandos":
1769
"se.bsnet.fukt.Mandos"})
728
error)
729
return xmlstring
730
731
1770
732
class ClientDBus(Client, DBusObjectWithProperties):
1771
733
"""A Client class using D-Bus
1772
734
1773
735
Attributes:
1774
736
dbus_object_path: dbus.ObjectPath
1775
737
bus: dbus.SystemBus()
1776
738
"""
1777
739
1778
740
runtime_expansions = (Client.runtime_expansions
1779
+ ("dbus_object_path", ))
1780
1781
_interface = "se.recompile.Mandos.Client"
1782
741
+ ("dbus_object_path",))
742
1783
743
# dbus.service.Object doesn't use super(), so we can't either.
1784
1785
def __init__(self, bus=None, *args, **kwargs):
744
745
def __init__(self, bus = None, *args, **kwargs):
746
self._approvals_pending = 0
1786
747
self.bus = bus
1787
748
Client.__init__(self, *args, **kwargs)
1788
749
# Only now, when this client is initialized, can it show up on
1789
750
# the D-Bus
1790
client_object_name = str(self.name).translate(
751
client_object_name = unicode(self.name).translate(
1791
752
{ord("."): ord("_"),
1792
753
ord("-"): ord("_")})
1793
self.dbus_object_path = dbus.ObjectPath(
1794
"/clients/" + client_object_name)
754
self.dbus_object_path = (dbus.ObjectPath
755
("/clients/" + client_object_name))
1795
756
DBusObjectWithProperties.__init__(self, self.bus,
1796
757
self.dbus_object_path)
1797
1798
def notifychangeproperty(transform_func, dbus_name,
1799
type_func=lambda x: x,
1800
variant_level=1,
1801
invalidate_only=False,
1802
_interface=_interface):
1803
""" Modify a variable so that it's a property which announces
1804
its changes to DBus.
1805
1806
transform_fun: Function that takes a value and a variant_level
1807
and transforms it to a D-Bus type.
1808
dbus_name: D-Bus name of the variable
1809
type_func: Function that transform the value before sending it
1810
to the D-Bus. Default: no transform
1811
variant_level: D-Bus variant level. Default: 1
1812
"""
1813
attrname = "_{}".format(dbus_name)
1814
1815
def setter(self, value):
1816
if hasattr(self, "dbus_object_path"):
1817
if (not hasattr(self, attrname) or
1818
type_func(getattr(self, attrname, None))
1819
!= type_func(value)):
1820
if invalidate_only:
1821
self.PropertiesChanged(
1822
_interface, dbus.Dictionary(),
1823
dbus.Array((dbus_name, )))
1824
else:
1825
dbus_value = transform_func(
1826
type_func(value),
1827
variant_level=variant_level)
1828
self.PropertyChanged(dbus.String(dbus_name),
1829
dbus_value)
1830
self.PropertiesChanged(
1831
_interface,
1832
dbus.Dictionary({dbus.String(dbus_name):
1833
dbus_value}),
1834
dbus.Array())
1835
setattr(self, attrname, value)
1836
1837
return property(lambda self: getattr(self, attrname), setter)
1838
1839
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1840
approvals_pending = notifychangeproperty(dbus.Boolean,
1841
"ApprovalPending",
1842
type_func=bool)
1843
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1844
last_enabled = notifychangeproperty(datetime_to_dbus,
1845
"LastEnabled")
1846
checker = notifychangeproperty(
1847
dbus.Boolean, "CheckerRunning",
1848
type_func=lambda checker: checker is not None)
1849
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1850
"LastCheckedOK")
1851
last_checker_status = notifychangeproperty(dbus.Int16,
1852
"LastCheckerStatus")
1853
last_approval_request = notifychangeproperty(
1854
datetime_to_dbus, "LastApprovalRequest")
1855
approved_by_default = notifychangeproperty(dbus.Boolean,
1856
"ApprovedByDefault")
1857
approval_delay = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDelay",
1859
type_func=lambda td: td.total_seconds() * 1000)
1860
approval_duration = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDuration",
1862
type_func=lambda td: td.total_seconds() * 1000)
1863
host = notifychangeproperty(dbus.String, "Host")
1864
timeout = notifychangeproperty(
1865
dbus.UInt64, "Timeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
extended_timeout = notifychangeproperty(
1868
dbus.UInt64, "ExtendedTimeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
interval = notifychangeproperty(
1871
dbus.UInt64, "Interval",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
checker_command = notifychangeproperty(dbus.String, "Checker")
1874
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1875
invalidate_only=True)
1876
1877
del notifychangeproperty
1878
758
759
def _get_approvals_pending(self):
760
return self._approvals_pending
761
def _set_approvals_pending(self, value):
762
old_value = self._approvals_pending
763
self._approvals_pending = value
764
bval = bool(value)
765
if (hasattr(self, "dbus_object_path")
766
and bval is not bool(old_value)):
767
dbus_bool = dbus.Boolean(bval, variant_level=1)
768
self.PropertyChanged(dbus.String("ApprovalPending"),
769
dbus_bool)
770
771
approvals_pending = property(_get_approvals_pending,
772
_set_approvals_pending)
773
del _get_approvals_pending, _set_approvals_pending
774
775
@staticmethod
776
def _datetime_to_dbus(dt, variant_level=0):
777
"""Convert a UTC datetime.datetime() to a D-Bus type."""
778
return dbus.String(dt.isoformat(),
779
variant_level=variant_level)
780
781
def enable(self):
782
oldstate = getattr(self, "enabled", False)
783
r = Client.enable(self)
784
if oldstate != self.enabled:
785
# Emit D-Bus signals
786
self.PropertyChanged(dbus.String("Enabled"),
787
dbus.Boolean(True, variant_level=1))
788
self.PropertyChanged(
789
dbus.String("LastEnabled"),
790
self._datetime_to_dbus(self.last_enabled,
791
variant_level=1))
792
return r
793
794
def disable(self, quiet = False):
795
oldstate = getattr(self, "enabled", False)
796
r = Client.disable(self, quiet=quiet)
797
if not quiet and oldstate != self.enabled:
798
# Emit D-Bus signal
799
self.PropertyChanged(dbus.String("Enabled"),
800
dbus.Boolean(False, variant_level=1))
801
return r
802
1879
803
def __del__(self, *args, **kwargs):
1880
804
try:
1881
805
self.remove_from_connection()
1884
808
if hasattr(DBusObjectWithProperties, "__del__"):
1885
809
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1886
810
Client.__del__(self, *args, **kwargs)
1887
1888
def checker_callback(self, source, condition,
1889
connection, command, *args, **kwargs):
1890
ret = Client.checker_callback(self, source, condition,
1891
connection, command, *args,
1892
**kwargs)
1893
exitstatus = self.last_checker_status
1894
if exitstatus >= 0:
811
812
def checker_callback(self, pid, condition, command,
813
*args, **kwargs):
814
self.checker_callback_tag = None
815
self.checker = None
816
# Emit D-Bus signal
817
self.PropertyChanged(dbus.String("CheckerRunning"),
818
dbus.Boolean(False, variant_level=1))
819
if os.WIFEXITED(condition):
820
exitstatus = os.WEXITSTATUS(condition)
1895
821
# Emit D-Bus signal
1896
822
self.CheckerCompleted(dbus.Int16(exitstatus),
1897
# This is specific to GNU libC
1898
dbus.Int64(exitstatus << 8),
823
dbus.Int64(condition),
1899
824
dbus.String(command))
1900
825
else:
1901
826
# Emit D-Bus signal
1902
827
self.CheckerCompleted(dbus.Int16(-1),
1903
dbus.Int64(
1904
# This is specific to GNU libC
1905
(exitstatus << 8)
1906
| self.last_checker_signal),
828
dbus.Int64(condition),
1907
829
dbus.String(command))
1908
return ret
1909
830
831
return Client.checker_callback(self, pid, condition, command,
832
*args, **kwargs)
833
834
def checked_ok(self, *args, **kwargs):
835
Client.checked_ok(self, *args, **kwargs)
836
# Emit D-Bus signal
837
self.PropertyChanged(
838
dbus.String("LastCheckedOK"),
839
(self._datetime_to_dbus(self.last_checked_ok,
840
variant_level=1)))
841
842
def need_approval(self, *args, **kwargs):
843
r = Client.need_approval(self, *args, **kwargs)
844
# Emit D-Bus signal
845
self.PropertyChanged(
846
dbus.String("LastApprovalRequest"),
847
(self._datetime_to_dbus(self.last_approval_request,
848
variant_level=1)))
849
return r
850
1910
851
def start_checker(self, *args, **kwargs):
1911
old_checker_pid = getattr(self.checker, "pid", None)
852
old_checker = self.checker
853
if self.checker is not None:
854
old_checker_pid = self.checker.pid
855
else:
856
old_checker_pid = None
1912
857
r = Client.start_checker(self, *args, **kwargs)
1913
858
# Only if new checker process was started
1914
859
if (self.checker is not None
1915
860
and old_checker_pid != self.checker.pid):
1916
861
# Emit D-Bus signal
1917
862
self.CheckerStarted(self.current_checker_command)
863
self.PropertyChanged(
864
dbus.String("CheckerRunning"),
865
dbus.Boolean(True, variant_level=1))
866
return r
867
868
def stop_checker(self, *args, **kwargs):
869
old_checker = getattr(self, "checker", None)
870
r = Client.stop_checker(self, *args, **kwargs)
871
if (old_checker is not None
872
and getattr(self, "checker", None) is None):
873
self.PropertyChanged(dbus.String("CheckerRunning"),
874
dbus.Boolean(False, variant_level=1))
1918
875
return r
1919
876
1920
877
def _reset_approved(self):
1921
self.approved = None
878
self._approved = None
1922
879
return False
1923
880
1924
881
def approve(self, value=True):
1925
self.approved = value
1926
GLib.timeout_add(int(self.approval_duration.total_seconds()
1927
* 1000), self._reset_approved)
1928
882
self.send_changedstate()
1929
1930
# D-Bus methods, signals & properties
1931
1932
# Interfaces
1933
1934
# Signals
1935
883
self._approved = value
884
gobject.timeout_add(self._timedelta_to_milliseconds
885
(self.approval_duration),
886
self._reset_approved)
887
888
889
## D-Bus methods, signals & properties
890
_interface = "se.bsnet.fukt.Mandos.Client"
891
892
## Signals
893
1936
894
# CheckerCompleted - signal
1937
895
@dbus.service.signal(_interface, signature="nxs")
1938
896
def CheckerCompleted(self, exitcode, waitstatus, command):
1939
897
"D-Bus signal"
1940
898
pass
1941
899
1942
900
# CheckerStarted - signal
1943
901
@dbus.service.signal(_interface, signature="s")
1944
902
def CheckerStarted(self, command):
1945
903
"D-Bus signal"
1946
904
pass
1947
905
1948
906
# PropertyChanged - signal
1949
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1950
907
@dbus.service.signal(_interface, signature="sv")
1951
908
def PropertyChanged(self, property, value):
1952
909
"D-Bus signal"
1953
910
pass
1954
911
1955
912
# GotSecret - signal
1956
913
@dbus.service.signal(_interface)
1957
914
def GotSecret(self):
1960
917
server to mandos-client
1961
918
"""
1962
919
pass
1963
920
1964
921
# Rejected - signal
1965
922
@dbus.service.signal(_interface, signature="s")
1966
923
def Rejected(self, reason):
1967
924
"D-Bus signal"
1968
925
pass
1969
926
1970
927
# NeedApproval - signal
1971
928
@dbus.service.signal(_interface, signature="tb")
1972
929
def NeedApproval(self, timeout, default):
1973
930
"D-Bus signal"
1974
931
return self.need_approval()
1975
1976
# Methods
1977
932
933
## Methods
934
1978
935
# Approve - method
1979
936
@dbus.service.method(_interface, in_signature="b")
1980
937
def Approve(self, value):
1981
938
self.approve(value)
1982
939
1983
940
# CheckedOK - method
1984
941
@dbus.service.method(_interface)
1985
942
def CheckedOK(self):
1986
943
self.checked_ok()
1987
944
1988
945
# Enable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
946
@dbus.service.method(_interface)
1991
947
def Enable(self):
1992
948
"D-Bus method"
1993
949
self.enable()
1994
950
1995
951
# StartChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
952
@dbus.service.method(_interface)
1998
953
def StartChecker(self):
1999
954
"D-Bus method"
2000
955
self.start_checker()
2001
956
2002
957
# Disable - method
2003
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2004
958
@dbus.service.method(_interface)
2005
959
def Disable(self):
2006
960
"D-Bus method"
2007
961
self.disable()
2008
962
2009
963
# StopChecker - method
2010
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2011
964
@dbus.service.method(_interface)
2012
965
def StopChecker(self):
2013
966
self.stop_checker()
2014
2015
# Properties
2016
967
968
## Properties
969
2017
970
# ApprovalPending - property
2018
971
@dbus_service_property(_interface, signature="b", access="read")
2019
972
def ApprovalPending_dbus_property(self):
2020
973
return dbus.Boolean(bool(self.approvals_pending))
2021
974
2022
975
# ApprovedByDefault - property
2023
@dbus_service_property(_interface,
2024
signature="b",
976
@dbus_service_property(_interface, signature="b",
2025
977
access="readwrite")
2026
978
def ApprovedByDefault_dbus_property(self, value=None):
2027
979
if value is None: # get
2028
980
return dbus.Boolean(self.approved_by_default)
2029
981
self.approved_by_default = bool(value)
2030
982
# Emit D-Bus signal
983
self.PropertyChanged(dbus.String("ApprovedByDefault"),
984
dbus.Boolean(value, variant_level=1))
985
2031
986
# ApprovalDelay - property
2032
@dbus_service_property(_interface,
2033
signature="t",
987
@dbus_service_property(_interface, signature="t",
2034
988
access="readwrite")
2035
989
def ApprovalDelay_dbus_property(self, value=None):
2036
990
if value is None: # get
2037
return dbus.UInt64(self.approval_delay.total_seconds()
2038
* 1000)
991
return dbus.UInt64(self.approval_delay_milliseconds())
2039
992
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2040
993
# Emit D-Bus signal
994
self.PropertyChanged(dbus.String("ApprovalDelay"),
995
dbus.UInt64(value, variant_level=1))
996
2041
997
# ApprovalDuration - property
2042
@dbus_service_property(_interface,
2043
signature="t",
998
@dbus_service_property(_interface, signature="t",
2044
999
access="readwrite")
2045
1000
def ApprovalDuration_dbus_property(self, value=None):
2046
1001
if value is None: # get
2047
return dbus.UInt64(self.approval_duration.total_seconds()
2048
* 1000)
1002
return dbus.UInt64(self._timedelta_to_milliseconds(
1003
self.approval_duration))
2049
1004
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2050
1005
# Emit D-Bus signal
1006
self.PropertyChanged(dbus.String("ApprovalDuration"),
1007
dbus.UInt64(value, variant_level=1))
1008
2051
1009
# Name - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1010
@dbus_service_property(_interface, signature="s", access="read")
2055
1011
def Name_dbus_property(self):
2056
1012
return dbus.String(self.name)
2057
2058
# KeyID - property
2059
@dbus_annotations(
2060
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2061
@dbus_service_property(_interface, signature="s", access="read")
2062
def KeyID_dbus_property(self):
2063
return dbus.String(self.key_id)
2064
1013
2065
1014
# Fingerprint - property
2066
@dbus_annotations(
2067
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2068
1015
@dbus_service_property(_interface, signature="s", access="read")
2069
1016
def Fingerprint_dbus_property(self):
2070
1017
return dbus.String(self.fingerprint)
2071
1018
2072
1019
# Host - property
2073
@dbus_service_property(_interface,
2074
signature="s",
1020
@dbus_service_property(_interface, signature="s",
2075
1021
access="readwrite")
2076
1022
def Host_dbus_property(self, value=None):
2077
1023
if value is None: # get
2078
1024
return dbus.String(self.host)
2079
self.host = str(value)
2080
1025
self.host = value
1026
# Emit D-Bus signal
1027
self.PropertyChanged(dbus.String("Host"),
1028
dbus.String(value, variant_level=1))
1029
2081
1030
# Created - property
2082
@dbus_annotations(
2083
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2084
1031
@dbus_service_property(_interface, signature="s", access="read")
2085
1032
def Created_dbus_property(self):
2086
return datetime_to_dbus(self.created)
2087
1033
return dbus.String(self._datetime_to_dbus(self.created))
1034
2088
1035
# LastEnabled - property
2089
1036
@dbus_service_property(_interface, signature="s", access="read")
2090
1037
def LastEnabled_dbus_property(self):
2091
return datetime_to_dbus(self.last_enabled)
2092
1038
if self.last_enabled is None:
1039
return dbus.String("")
1040
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1041
2093
1042
# Enabled - property
2094
@dbus_service_property(_interface,
2095
signature="b",
1043
@dbus_service_property(_interface, signature="b",
2096
1044
access="readwrite")
2097
1045
def Enabled_dbus_property(self, value=None):
2098
1046
if value is None: # get
2101
1049
self.enable()
2102
1050
else:
2103
1051
self.disable()
2104
1052
2105
1053
# LastCheckedOK - property
2106
@dbus_service_property(_interface,
2107
signature="s",
1054
@dbus_service_property(_interface, signature="s",
2108
1055
access="readwrite")
2109
1056
def LastCheckedOK_dbus_property(self, value=None):
2110
1057
if value is not None:
2111
1058
self.checked_ok()
2112
1059
return
2113
return datetime_to_dbus(self.last_checked_ok)
2114
2115
# LastCheckerStatus - property
2116
@dbus_service_property(_interface, signature="n", access="read")
2117
def LastCheckerStatus_dbus_property(self):
2118
return dbus.Int16(self.last_checker_status)
2119
2120
# Expires - property
2121
@dbus_service_property(_interface, signature="s", access="read")
2122
def Expires_dbus_property(self):
2123
return datetime_to_dbus(self.expires)
2124
1060
if self.last_checked_ok is None:
1061
return dbus.String("")
1062
return dbus.String(self._datetime_to_dbus(self
1063
.last_checked_ok))
1064
2125
1065
# LastApprovalRequest - property
2126
1066
@dbus_service_property(_interface, signature="s", access="read")
2127
1067
def LastApprovalRequest_dbus_property(self):
2128
return datetime_to_dbus(self.last_approval_request)
2129
1068
if self.last_approval_request is None:
1069
return dbus.String("")
1070
return dbus.String(self.
1071
_datetime_to_dbus(self
1072
.last_approval_request))
1073
2130
1074
# Timeout - property
2131
@dbus_service_property(_interface,
2132
signature="t",
1075
@dbus_service_property(_interface, signature="t",
2133
1076
access="readwrite")
2134
1077
def Timeout_dbus_property(self, value=None):
2135
1078
if value is None: # get
2136
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2137
old_timeout = self.timeout
1079
return dbus.UInt64(self.timeout_milliseconds())
2138
1080
self.timeout = datetime.timedelta(0, 0, 0, value)
2139
# Reschedule disabling
2140
if self.enabled:
2141
now = datetime.datetime.utcnow()
2142
self.expires += self.timeout - old_timeout
2143
if self.expires <= now:
2144
# The timeout has passed
2145
self.disable()
2146
else:
2147
if (getattr(self, "disable_initiator_tag", None)
2148
is None):
2149
return
2150
GLib.source_remove(self.disable_initiator_tag)
2151
self.disable_initiator_tag = GLib.timeout_add(
2152
int((self.expires - now).total_seconds() * 1000),
2153
self.disable)
2154
2155
# ExtendedTimeout - property
2156
@dbus_service_property(_interface,
2157
signature="t",
2158
access="readwrite")
2159
def ExtendedTimeout_dbus_property(self, value=None):
2160
if value is None: # get
2161
return dbus.UInt64(self.extended_timeout.total_seconds()
2162
* 1000)
2163
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2164
1081
# Emit D-Bus signal
1082
self.PropertyChanged(dbus.String("Timeout"),
1083
dbus.UInt64(value, variant_level=1))
1084
if getattr(self, "disable_initiator_tag", None) is None:
1085
return
1086
# Reschedule timeout
1087
gobject.source_remove(self.disable_initiator_tag)
1088
self.disable_initiator_tag = None
1089
time_to_die = (self.
1090
_timedelta_to_milliseconds((self
1091
.last_checked_ok
1092
+ self.timeout)
1093
- datetime.datetime
1094
.utcnow()))
1095
if time_to_die <= 0:
1096
# The timeout has passed
1097
self.disable()
1098
else:
1099
self.disable_initiator_tag = (gobject.timeout_add
1100
(time_to_die, self.disable))
1101
2165
1102
# Interval - property
2166
@dbus_service_property(_interface,
2167
signature="t",
1103
@dbus_service_property(_interface, signature="t",
2168
1104
access="readwrite")
2169
1105
def Interval_dbus_property(self, value=None):
2170
1106
if value is None: # get
2171
return dbus.UInt64(self.interval.total_seconds() * 1000)
1107
return dbus.UInt64(self.interval_milliseconds())
2172
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Interval"),
1111
dbus.UInt64(value, variant_level=1))
2173
1112
if getattr(self, "checker_initiator_tag", None) is None:
2174
1113
return
2175
if self.enabled:
2176
# Reschedule checker run
2177
GLib.source_remove(self.checker_initiator_tag)
2178
self.checker_initiator_tag = GLib.timeout_add(
2179
value, self.start_checker)
2180
self.start_checker() # Start one now, too
1114
# Reschedule checker run
1115
gobject.source_remove(self.checker_initiator_tag)
1116
self.checker_initiator_tag = (gobject.timeout_add
1117
(value, self.start_checker))
1118
self.start_checker() # Start one now, too
2181
1119
2182
1120
# Checker - property
2183
@dbus_service_property(_interface,
2184
signature="s",
1121
@dbus_service_property(_interface, signature="s",
2185
1122
access="readwrite")
2186
1123
def Checker_dbus_property(self, value=None):
2187
1124
if value is None: # get
2188
1125
return dbus.String(self.checker_command)
2189
self.checker_command = str(value)
2190
1126
self.checker_command = value
1127
# Emit D-Bus signal
1128
self.PropertyChanged(dbus.String("Checker"),
1129
dbus.String(self.checker_command,
1130
variant_level=1))
1131
2191
1132
# CheckerRunning - property
2192
@dbus_service_property(_interface,
2193
signature="b",
1133
@dbus_service_property(_interface, signature="b",
2194
1134
access="readwrite")
2195
1135
def CheckerRunning_dbus_property(self, value=None):
2196
1136
if value is None: # get
2199
1139
self.start_checker()
2200
1140
else:
2201
1141
self.stop_checker()
2202
1142
2203
1143
# ObjectPath - property
2204
@dbus_annotations(
2205
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2206
"org.freedesktop.DBus.Deprecated": "true"})
2207
1144
@dbus_service_property(_interface, signature="o", access="read")
2208
1145
def ObjectPath_dbus_property(self):
2209
return self.dbus_object_path # is already a dbus.ObjectPath
2210
1146
return self.dbus_object_path # is already a dbus.ObjectPath
1147
2211
1148
# Secret = property
2212
@dbus_annotations(
2213
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2214
"invalidates"})
2215
@dbus_service_property(_interface,
2216
signature="ay",
2217
access="write",
2218
byte_arrays=True)
1149
@dbus_service_property(_interface, signature="ay",
1150
access="write", byte_arrays=True)
2219
1151
def Secret_dbus_property(self, value):
2220
self.secret = bytes(value)
2221
1152
self.secret = str(value)
1153
2222
1154
del _interface
2223
1155
2224
1156
2225
class ProxyClient:
2226
def __init__(self, child_pipe, key_id, fpr, address):
1157
class ProxyClient(object):
1158
def __init__(self, child_pipe, fpr, address):
2227
1159
self._pipe = child_pipe
2228
self._pipe.send(('init', key_id, fpr, address))
1160
self._pipe.send(('init', fpr, address))
2229
1161
if not self._pipe.recv():
2230
raise KeyError(key_id or fpr)
1162
raise KeyError()
2231
1163
2232
1164
def __getattribute__(self, name):
2233
if name == '_pipe':
1165
if(name == '_pipe'):
2234
1166
return super(ProxyClient, self).__getattribute__(name)
2235
1167
self._pipe.send(('getattr', name))
2236
1168
data = self._pipe.recv()
2237
1169
if data[0] == 'data':
2238
1170
return data[1]
2239
1171
if data[0] == 'function':
2240
2241
1172
def func(*args, **kwargs):
2242
1173
self._pipe.send(('funcall', name, args, kwargs))
2243
1174
return self._pipe.recv()[1]
2244
2245
1175
return func
2246
1176
2247
1177
def __setattr__(self, name, value):
2248
if name == '_pipe':
1178
if(name == '_pipe'):
2249
1179
return super(ProxyClient, self).__setattr__(name, value)
2250
1180
self._pipe.send(('setattr', name, value))
2251
1181
2252
1182
2253
1183
class ClientHandler(socketserver.BaseRequestHandler, object):
2254
1184
"""A class to handle client connections.
2255
1185
2256
1186
Instantiated once for each connection to handle it.
2257
1187
Note: This will run in its own forked process."""
2258
1188
2259
1189
def handle(self):
2260
1190
with contextlib.closing(self.server.child_pipe) as child_pipe:
2261
1191
logger.info("TCP connection from: %s",
2262
str(self.client_address))
1192
unicode(self.client_address))
2263
1193
logger.debug("Pipe FD: %d",
2264
1194
self.server.child_pipe.fileno())
2265
1195
2266
session = gnutls.ClientSession(self.request)
2267
2268
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2269
# "+AES-256-CBC", "+SHA1",
2270
# "+COMP-NULL", "+CTYPE-OPENPGP",
2271
# "+DHE-DSS"))
1196
session = (gnutls.connection
1197
.ClientSession(self.request,
1198
gnutls.connection
1199
.X509Credentials()))
1200
1201
# Note: gnutls.connection.X509Credentials is really a
1202
# generic GnuTLS certificate credentials object so long as
1203
# no X.509 keys are added to it. Therefore, we can use it
1204
# here despite using OpenPGP certificates.
1205
1206
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1207
# "+AES-256-CBC", "+SHA1",
1208
# "+COMP-NULL", "+CTYPE-OPENPGP",
1209
# "+DHE-DSS"))
2272
1210
# Use a fallback default, since this MUST be set.
2273
1211
priority = self.server.gnutls_priority
2274
1212
if priority is None:
2275
1213
priority = "NORMAL"
2276
gnutls.priority_set_direct(session._c_object,
2277
priority.encode("utf-8"),
2278
None)
1214
(gnutls.library.functions
1215
.gnutls_priority_set_direct(session._c_object,
1216
priority, None))
2279
1217
2280
1218
# Start communication using the Mandos protocol
2281
1219
# Get protocol number
2283
1221
logger.debug("Protocol version: %r", line)
2284
1222
try:
2285
1223
if int(line.strip().split()[0]) > 1:
2286
raise RuntimeError(line)
1224
raise RuntimeError
2287
1225
except (ValueError, IndexError, RuntimeError) as error:
2288
1226
logger.error("Unknown protocol version: %s", error)
2289
1227
return
2291
1229
# Start GnuTLS connection
2292
1230
try:
2293
1231
session.handshake()
2294
except gnutls.Error as error:
1232
except gnutls.errors.GNUTLSError as error:
2295
1233
logger.warning("Handshake failed: %s", error)
2296
1234
# Do not run session.bye() here: the session is not
2297
1235
# established. Just abandon the request.
2300
1238
2301
1239
approval_required = False
2302
1240
try:
2303
if gnutls.has_rawpk:
2304
fpr = b""
2305
try:
2306
key_id = self.key_id(
2307
self.peer_certificate(session))
2308
except (TypeError, gnutls.Error) as error:
2309
logger.warning("Bad certificate: %s", error)
2310
return
2311
logger.debug("Key ID: %s", key_id)
2312
2313
else:
2314
key_id = b""
2315
try:
2316
fpr = self.fingerprint(
2317
self.peer_certificate(session))
2318
except (TypeError, gnutls.Error) as error:
2319
logger.warning("Bad certificate: %s", error)
2320
return
2321
logger.debug("Fingerprint: %s", fpr)
2322
2323
try:
2324
client = ProxyClient(child_pipe, key_id, fpr,
1241
try:
1242
fpr = self.fingerprint(self.peer_certificate
1243
(session))
1244
except (TypeError,
1245
gnutls.errors.GNUTLSError) as error:
1246
logger.warning("Bad certificate: %s", error)
1247
return
1248
logger.debug("Fingerprint: %s", fpr)
1249
1250
try:
1251
client = ProxyClient(child_pipe, fpr,
2325
1252
self.client_address)
2326
1253
except KeyError:
2327
1254
return
2328
1255
2329
1256
if client.approval_delay:
2330
1257
delay = client.approval_delay
2331
1258
client.approvals_pending += 1
2332
1259
approval_required = True
2333
1260
2334
1261
while True:
2335
1262
if not client.enabled:
2336
logger.info("Client %s is disabled",
2337
client.name)
1263
logger.warning("Client %s is disabled",
1264
client.name)
2338
1265
if self.server.use_dbus:
2339
1266
# Emit D-Bus signal
2340
client.Rejected("Disabled")
1267
client.Rejected("Disabled")
2341
1268
return
2342
2343
if client.approved or not client.approval_delay:
2344
# We are approved or approval is disabled
1269
1270
if client._approved or not client.approval_delay:
1271
#We are approved or approval is disabled
2345
1272
break
2346
elif client.approved is None:
1273
elif client._approved is None:
2347
1274
logger.info("Client %s needs approval",
2348
1275
client.name)
2349
1276
if self.server.use_dbus:
2350
1277
# Emit D-Bus signal
2351
1278
client.NeedApproval(
2352
client.approval_delay.total_seconds()
2353
* 1000, client.approved_by_default)
1279
client.approval_delay_milliseconds(),
1280
client.approved_by_default)
2354
1281
else:
2355
1282
logger.warning("Client %s was not approved",
2356
1283
client.name)
2358
1285
# Emit D-Bus signal
2359
1286
client.Rejected("Denied")
2360
1287
return
2361
2362
# wait until timeout or approved
1288
1289
#wait until timeout or approved
1290
#x = float(client._timedelta_to_milliseconds(delay))
2363
1291
time = datetime.datetime.now()
2364
1292
client.changedstate.acquire()
2365
client.changedstate.wait(delay.total_seconds())
1293
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2366
1294
client.changedstate.release()
2367
1295
time2 = datetime.datetime.now()
2368
1296
if (time2 - time) >= delay:
2378
1306
break
2379
1307
else:
2380
1308
delay -= time2 - time
2381
2382
try:
2383
session.send(client.secret)
2384
except gnutls.Error as error:
2385
logger.warning("gnutls send failed",
2386
exc_info=error)
2387
return
1309
1310
sent_size = 0
1311
while sent_size < len(client.secret):
1312
try:
1313
sent = session.send(client.secret[sent_size:])
1314
except gnutls.errors.GNUTLSError as error:
1315
logger.warning("gnutls send failed")
1316
return
1317
logger.debug("Sent: %d, remaining: %d",
1318
sent, len(client.secret)
1319
- (sent_size + sent))
1320
sent_size += sent
2388
1321
2389
1322
logger.info("Sending secret to %s", client.name)
2390
# bump the timeout using extended_timeout
2391
client.bump_timeout(client.extended_timeout)
1323
# bump the timeout as if seen
1324
client.checked_ok()
2392
1325
if self.server.use_dbus:
2393
1326
# Emit D-Bus signal
2394
1327
client.GotSecret()
2395
1328
2396
1329
finally:
2397
1330
if approval_required:
2398
1331
client.approvals_pending -= 1
2399
1332
try:
2400
1333
session.bye()
2401
except gnutls.Error as error:
2402
logger.warning("GnuTLS bye failed",
2403
exc_info=error)
2404
1334
except gnutls.errors.GNUTLSError as error:
1335
logger.warning("GnuTLS bye failed")
1336
2405
1337
@staticmethod
2406
1338
def peer_certificate(session):
2407
"Return the peer's certificate as a bytestring"
2408
try:
2409
cert_type = gnutls.certificate_type_get2(session._c_object,
2410
gnutls.CTYPE_PEERS)
2411
except AttributeError:
2412
cert_type = gnutls.certificate_type_get(session._c_object)
2413
if gnutls.has_rawpk:
2414
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2415
else:
2416
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2417
# If not a valid certificate type...
2418
if cert_type not in valid_cert_types:
2419
logger.info("Cert type %r not in %r", cert_type,
2420
valid_cert_types)
2421
# ...return invalid data
2422
return b""
1339
"Return the peer's OpenPGP certificate as a bytestring"
1340
# If not an OpenPGP certificate...
1341
if (gnutls.library.functions
1342
.gnutls_certificate_type_get(session._c_object)
1343
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1344
# ...do the normal thing
1345
return session.peer_certificate
2423
1346
list_size = ctypes.c_uint(1)
2424
cert_list = (gnutls.certificate_get_peers
1347
cert_list = (gnutls.library.functions
1348
.gnutls_certificate_get_peers
2425
1349
(session._c_object, ctypes.byref(list_size)))
2426
1350
if not bool(cert_list) and list_size.value != 0:
2427
raise gnutls.Error("error getting peer certificate")
1351
raise gnutls.errors.GNUTLSError("error getting peer"
1352
" certificate")
2428
1353
if list_size.value == 0:
2429
1354
return None
2430
1355
cert = cert_list[0]
2431
1356
return ctypes.string_at(cert.data, cert.size)
2432
2433
@staticmethod
2434
def key_id(certificate):
2435
"Convert a certificate bytestring to a hexdigit key ID"
2436
# New GnuTLS "datum" with the public key
2437
datum = gnutls.datum_t(
2438
ctypes.cast(ctypes.c_char_p(certificate),
2439
ctypes.POINTER(ctypes.c_ubyte)),
2440
ctypes.c_uint(len(certificate)))
2441
# XXX all these need to be created in the gnutls "module"
2442
# New empty GnuTLS certificate
2443
pubkey = gnutls.pubkey_t()
2444
gnutls.pubkey_init(ctypes.byref(pubkey))
2445
# Import the raw public key into the certificate
2446
gnutls.pubkey_import(pubkey,
2447
ctypes.byref(datum),
2448
gnutls.X509_FMT_DER)
2449
# New buffer for the key ID
2450
buf = ctypes.create_string_buffer(32)
2451
buf_len = ctypes.c_size_t(len(buf))
2452
# Get the key ID from the raw public key into the buffer
2453
gnutls.pubkey_get_key_id(pubkey,
2454
gnutls.KEYID_USE_SHA256,
2455
ctypes.cast(ctypes.byref(buf),
2456
ctypes.POINTER(ctypes.c_ubyte)),
2457
ctypes.byref(buf_len))
2458
# Deinit the certificate
2459
gnutls.pubkey_deinit(pubkey)
2460
2461
# Convert the buffer to a Python bytestring
2462
key_id = ctypes.string_at(buf, buf_len.value)
2463
# Convert the bytestring to hexadecimal notation
2464
hex_key_id = binascii.hexlify(key_id).upper()
2465
return hex_key_id
2466
1357
2467
1358
@staticmethod
2468
1359
def fingerprint(openpgp):
2469
1360
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2470
1361
# New GnuTLS "datum" with the OpenPGP public key
2471
datum = gnutls.datum_t(
2472
ctypes.cast(ctypes.c_char_p(openpgp),
2473
ctypes.POINTER(ctypes.c_ubyte)),
2474
ctypes.c_uint(len(openpgp)))
1362
datum = (gnutls.library.types
1363
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1364
ctypes.POINTER
1365
(ctypes.c_ubyte)),
1366
ctypes.c_uint(len(openpgp))))
2475
1367
# New empty GnuTLS certificate
2476
crt = gnutls.openpgp_crt_t()
2477
gnutls.openpgp_crt_init(ctypes.byref(crt))
1368
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2478
1371
# Import the OpenPGP public key into the certificate
2479
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2480
gnutls.OPENPGP_FMT_RAW)
1372
(gnutls.library.functions
1373
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1374
gnutls.library.constants
1375
.GNUTLS_OPENPGP_FMT_RAW))
2481
1376
# Verify the self signature in the key
2482
1377
crtverify = ctypes.c_uint()
2483
gnutls.openpgp_crt_verify_self(crt, 0,
2484
ctypes.byref(crtverify))
1378
(gnutls.library.functions
1379
.gnutls_openpgp_crt_verify_self(crt, 0,
1380
ctypes.byref(crtverify)))
2485
1381
if crtverify.value != 0:
2486
gnutls.openpgp_crt_deinit(crt)
2487
raise gnutls.CertificateSecurityError(code
2488
=crtverify.value)
1382
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1383
raise (gnutls.errors.CertificateSecurityError
1384
("Verify failed"))
2489
1385
# New buffer for the fingerprint
2490
1386
buf = ctypes.create_string_buffer(20)
2491
1387
buf_len = ctypes.c_size_t()
2492
1388
# Get the fingerprint from the certificate into the buffer
2493
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2494
ctypes.byref(buf_len))
1389
(gnutls.library.functions
1390
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1391
ctypes.byref(buf_len)))
2495
1392
# Deinit the certificate
2496
gnutls.openpgp_crt_deinit(crt)
1393
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2497
1394
# Convert the buffer to a Python bytestring
2498
1395
fpr = ctypes.string_at(buf, buf_len.value)
2499
1396
# Convert the bytestring to hexadecimal notation
2500
hex_fpr = binascii.hexlify(fpr).upper()
1397
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2501
1398
return hex_fpr
2502
1399
2503
1400
2504
class MultiprocessingMixIn:
1401
class MultiprocessingMixIn(object):
2505
1402
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2506
2507
1403
def sub_process_main(self, request, address):
2508
1404
try:
2509
1405
self.finish_request(request, address)
2510
except Exception:
1406
except:
2511
1407
self.handle_error(request, address)
2512
1408
self.close_request(request)
2513
1409
2514
1410
def process_request(self, request, address):
2515
1411
"""Start a new process to process the request."""
2516
proc = multiprocessing.Process(target=self.sub_process_main,
2517
args=(request, address))
2518
proc.start()
2519
return proc
2520
2521
2522
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1412
multiprocessing.Process(target = self.sub_process_main,
1413
args = (request, address)).start()
1414
1415
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2523
1416
""" adds a pipe to the MixIn """
2524
2525
1417
def process_request(self, request, client_address):
2526
1418
"""Overrides and wraps the original process_request().
2527
1419
2528
1420
This function creates a new pipe in self.pipe
2529
1421
"""
2530
1422
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2531
1423
2532
proc = MultiprocessingMixIn.process_request(self, request,
2533
client_address)
1424
super(MultiprocessingMixInWithPipe,
1425
self).process_request(request, client_address)
2534
1426
self.child_pipe.close()
2535
self.add_pipe(parent_pipe, proc)
1427
self.add_pipe(parent_pipe)
2536
1428
2537
def add_pipe(self, parent_pipe, proc):
1429
def add_pipe(self, parent_pipe):
2538
1430
"""Dummy function; override as necessary"""
2539
raise NotImplementedError()
2540
1431
raise NotImplementedError
2541
1432
2542
1433
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2543
socketserver.TCPServer):
1434
socketserver.TCPServer, object):
2544
1435
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2545
1436
2546
1437
Attributes:
2547
1438
enabled: Boolean; whether this server is activated yet
2548
1439
interface: None or a network interface name (string)
2549
1440
use_ipv6: Boolean; to use IPv6 or not
2550
1441
"""
2551
2552
1442
def __init__(self, server_address, RequestHandlerClass,
2553
interface=None,
2554
use_ipv6=True,
2555
socketfd=None):
2556
"""If socketfd is set, use that file descriptor instead of
2557
creating a new one with socket.socket().
2558
"""
1443
interface=None, use_ipv6=True):
2559
1444
self.interface = interface
2560
1445
if use_ipv6:
2561
1446
self.address_family = socket.AF_INET6
2562
if socketfd is not None:
2563
# Save the file descriptor
2564
self.socketfd = socketfd
2565
# Save the original socket.socket() function
2566
self.socket_socket = socket.socket
2567
2568
# To implement --socket, we monkey patch socket.socket.
2569
#
2570
# (When socketserver.TCPServer is a new-style class, we
2571
# could make self.socket into a property instead of monkey
2572
# patching socket.socket.)
2573
#
2574
# Create a one-time-only replacement for socket.socket()
2575
@functools.wraps(socket.socket)
2576
def socket_wrapper(*args, **kwargs):
2577
# Restore original function so subsequent calls are
2578
# not affected.
2579
socket.socket = self.socket_socket
2580
del self.socket_socket
2581
# This time only, return a new socket object from the
2582
# saved file descriptor.
2583
return socket.fromfd(self.socketfd, *args, **kwargs)
2584
# Replace socket.socket() function with wrapper
2585
socket.socket = socket_wrapper
2586
# The socketserver.TCPServer.__init__ will call
2587
# socket.socket(), which might be our replacement,
2588
# socket_wrapper(), if socketfd was set.
2589
1447
socketserver.TCPServer.__init__(self, server_address,
2590
1448
RequestHandlerClass)
2591
2592
1449
def server_bind(self):
2593
1450
"""This overrides the normal server_bind() function
2594
1451
to bind to an interface if one was specified, and also NOT to
2595
1452
bind to an address or port if they were not specified."""
2596
global SO_BINDTODEVICE
2597
1453
if self.interface is not None:
2598
1454
if SO_BINDTODEVICE is None:
2599
# Fall back to a hard-coded value which seems to be
2600
# common enough.
2601
logger.warning("SO_BINDTODEVICE not found, trying 25")
2602
SO_BINDTODEVICE = 25
2603
try:
2604
self.socket.setsockopt(
2605
socket.SOL_SOCKET, SO_BINDTODEVICE,
2606
(self.interface + "\0").encode("utf-8"))
2607
except socket.error as error:
2608
if error.errno == errno.EPERM:
2609
logger.error("No permission to bind to"
2610
" interface %s", self.interface)
2611
elif error.errno == errno.ENOPROTOOPT:
2612
logger.error("SO_BINDTODEVICE not available;"
2613
" cannot bind to interface %s",
2614
self.interface)
2615
elif error.errno == errno.ENODEV:
2616
logger.error("Interface %s does not exist,"
2617
" cannot bind", self.interface)
2618
else:
2619
raise
1455
logger.error("SO_BINDTODEVICE does not exist;"
1456
" cannot bind to interface %s",
1457
self.interface)
1458
else:
1459
try:
1460
self.socket.setsockopt(socket.SOL_SOCKET,
1461
SO_BINDTODEVICE,
1462
str(self.interface
1463
+ '\0'))
1464
except socket.error as error:
1465
if error[0] == errno.EPERM:
1466
logger.error("No permission to"
1467
" bind to interface %s",
1468
self.interface)
1469
elif error[0] == errno.ENOPROTOOPT:
1470
logger.error("SO_BINDTODEVICE not available;"
1471
" cannot bind to interface %s",
1472
self.interface)
1473
else:
1474
raise
2620
1475
# Only bind(2) the socket if we really need to.
2621
1476
if self.server_address[0] or self.server_address[1]:
2622
if self.server_address[1]:
2623
self.allow_reuse_address = True
2624
1477
if not self.server_address[0]:
2625
1478
if self.address_family == socket.AF_INET6:
2626
any_address = "::" # in6addr_any
1479
any_address = "::" # in6addr_any
2627
1480
else:
2628
any_address = "0.0.0.0" # INADDR_ANY
1481
any_address = socket.INADDR_ANY
2629
1482
self.server_address = (any_address,
2630
1483
self.server_address[1])
2631
1484
elif not self.server_address[1]:
2632
self.server_address = (self.server_address[0], 0)
1485
self.server_address = (self.server_address[0],
1486
0)
2633
1487
# if self.interface:
2634
1488
# self.server_address = (self.server_address[0],
2635
1489
# 0, # port
2641
1495
2642
1496
class MandosServer(IPv6_TCPServer):
2643
1497
"""Mandos server.
2644
1498
2645
1499
Attributes:
2646
1500
clients: set of Client objects
2647
1501
gnutls_priority GnuTLS priority string
2648
1502
use_dbus: Boolean; to emit D-Bus signals or not
2649
2650
Assumes a GLib.MainLoop event loop.
1503
1504
Assumes a gobject.MainLoop event loop.
2651
1505
"""
2652
2653
1506
def __init__(self, server_address, RequestHandlerClass,
2654
interface=None,
2655
use_ipv6=True,
2656
clients=None,
2657
gnutls_priority=None,
2658
use_dbus=True,
2659
socketfd=None):
1507
interface=None, use_ipv6=True, clients=None,
1508
gnutls_priority=None, use_dbus=True):
2660
1509
self.enabled = False
2661
1510
self.clients = clients
2662
1511
if self.clients is None:
2663
self.clients = {}
1512
self.clients = set()
2664
1513
self.use_dbus = use_dbus
2665
1514
self.gnutls_priority = gnutls_priority
2666
1515
IPv6_TCPServer.__init__(self, server_address,
2667
1516
RequestHandlerClass,
2668
interface=interface,
2669
use_ipv6=use_ipv6,
2670
socketfd=socketfd)
2671
1517
interface = interface,
1518
use_ipv6 = use_ipv6)
2672
1519
def server_activate(self):
2673
1520
if self.enabled:
2674
1521
return socketserver.TCPServer.server_activate(self)
2675
2676
1522
def enable(self):
2677
1523
self.enabled = True
2678
2679
def add_pipe(self, parent_pipe, proc):
1524
def add_pipe(self, parent_pipe):
2680
1525
# Call "handle_ipc" for both data and EOF events
2681
GLib.io_add_watch(
2682
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2683
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2684
functools.partial(self.handle_ipc,
2685
parent_pipe=parent_pipe,
2686
proc=proc))
2687
2688
def handle_ipc(self, source, condition,
2689
parent_pipe=None,
2690
proc=None,
1526
gobject.io_add_watch(parent_pipe.fileno(),
1527
gobject.IO_IN | gobject.IO_HUP,
1528
functools.partial(self.handle_ipc,
1529
parent_pipe = parent_pipe))
1530
1531
def handle_ipc(self, source, condition, parent_pipe=None,
2691
1532
client_object=None):
2692
# error, or the other end of multiprocessing.Pipe has closed
2693
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2694
# Wait for other process to exit
2695
proc.join()
1533
condition_names = {
1534
gobject.IO_IN: "IN", # There is data to read.
1535
gobject.IO_OUT: "OUT", # Data can be written (without
1536
# blocking).
1537
gobject.IO_PRI: "PRI", # There is urgent data to read.
1538
gobject.IO_ERR: "ERR", # Error condition.
1539
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1540
# broken, usually for pipes and
1541
# sockets).
1542
}
1543
conditions_string = ' | '.join(name
1544
for cond, name in
1545
condition_names.iteritems()
1546
if cond & condition)
1547
# error or the other end of multiprocessing.Pipe has closed
1548
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2696
1549
return False
2697
1550
2698
1551
# Read a request from the child
2699
1552
request = parent_pipe.recv()
2700
1553
command = request[0]
2701
1554
2702
1555
if command == 'init':
2703
key_id = request[1].decode("ascii")
2704
fpr = request[2].decode("ascii")
2705
address = request[3]
2706
2707
for c in self.clients.values():
2708
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2709
continue
2710
if key_id and c.key_id == key_id:
2711
client = c
2712
break
2713
if fpr and c.fingerprint == fpr:
1556
fpr = request[1]
1557
address = request[2]
1558
1559
for c in self.clients:
1560
if c.fingerprint == fpr:
2714
1561
client = c
2715
1562
break
2716
1563
else:
2717
logger.info("Client not found for key ID: %s, address"
2718
": %s", key_id or fpr, address)
1564
logger.warning("Client not found for fingerprint: %s, ad"
1565
"dress: %s", fpr, address)
2719
1566
if self.use_dbus:
2720
1567
# Emit D-Bus signal
2721
mandos_dbus_service.ClientNotFound(key_id or fpr,
2722
address[0])
1568
mandos_dbus_service.ClientNotFound(fpr, address[0])
2723
1569
parent_pipe.send(False)
2724
1570
return False
2725
2726
GLib.io_add_watch(
2727
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2728
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2729
functools.partial(self.handle_ipc,
2730
parent_pipe=parent_pipe,
2731
proc=proc,
2732
client_object=client))
1571
1572
gobject.io_add_watch(parent_pipe.fileno(),
1573
gobject.IO_IN | gobject.IO_HUP,
1574
functools.partial(self.handle_ipc,
1575
parent_pipe = parent_pipe,
1576
client_object = client))
2733
1577
parent_pipe.send(True)
2734
# remove the old hook in favor of the new above hook on
2735
# same fileno
1578
# remove the old hook in favor of the new above hook on same fileno
2736
1579
return False
2737
1580
if command == 'funcall':
2738
1581
funcname = request[1]
2739
1582
args = request[2]
2740
1583
kwargs = request[3]
2741
2742
parent_pipe.send(('data', getattr(client_object,
2743
funcname)(*args,
2744
**kwargs)))
1584
1585
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2745
1586
2746
1587
if command == 'getattr':
2747
1588
attrname = request[1]
2748
if isinstance(client_object.__getattribute__(attrname),
2749
collections.Callable):
2750
parent_pipe.send(('function', ))
1589
if callable(client_object.__getattribute__(attrname)):
1590
parent_pipe.send(('function',))
2751
1591
else:
2752
parent_pipe.send((
2753
'data', client_object.__getattribute__(attrname)))
2754
1592
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1593
2755
1594
if command == 'setattr':
2756
1595
attrname = request[1]
2757
1596
value = request[2]
2760
1599
return True
2761
1600
2762
1601
2763
def rfc3339_duration_to_delta(duration):
2764
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2765
2766
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2767
True
2768
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2771
True
2772
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2773
True
2774
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2775
True
2776
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2777
True
2778
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2779
True
2780
"""
2781
2782
# Parsing an RFC 3339 duration with regular expressions is not
2783
# possible - there would have to be multiple places for the same
2784
# values, like seconds. The current code, while more esoteric, is
2785
# cleaner without depending on a parsing library. If Python had a
2786
# built-in library for parsing we would use it, but we'd like to
2787
# avoid excessive use of external libraries.
2788
2789
# New type for defining tokens, syntax, and semantics all-in-one
2790
Token = collections.namedtuple("Token", (
2791
"regexp", # To match token; if "value" is not None, must have
2792
# a "group" containing digits
2793
"value", # datetime.timedelta or None
2794
"followers")) # Tokens valid after this token
2795
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2796
# the "duration" ABNF definition in RFC 3339, Appendix A.
2797
token_end = Token(re.compile(r"$"), None, frozenset())
2798
token_second = Token(re.compile(r"(\d+)S"),
2799
datetime.timedelta(seconds=1),
2800
frozenset((token_end, )))
2801
token_minute = Token(re.compile(r"(\d+)M"),
2802
datetime.timedelta(minutes=1),
2803
frozenset((token_second, token_end)))
2804
token_hour = Token(re.compile(r"(\d+)H"),
2805
datetime.timedelta(hours=1),
2806
frozenset((token_minute, token_end)))
2807
token_time = Token(re.compile(r"T"),
2808
None,
2809
frozenset((token_hour, token_minute,
2810
token_second)))
2811
token_day = Token(re.compile(r"(\d+)D"),
2812
datetime.timedelta(days=1),
2813
frozenset((token_time, token_end)))
2814
token_month = Token(re.compile(r"(\d+)M"),
2815
datetime.timedelta(weeks=4),
2816
frozenset((token_day, token_end)))
2817
token_year = Token(re.compile(r"(\d+)Y"),
2818
datetime.timedelta(weeks=52),
2819
frozenset((token_month, token_end)))
2820
token_week = Token(re.compile(r"(\d+)W"),
2821
datetime.timedelta(weeks=1),
2822
frozenset((token_end, )))
2823
token_duration = Token(re.compile(r"P"), None,
2824
frozenset((token_year, token_month,
2825
token_day, token_time,
2826
token_week)))
2827
# Define starting values:
2828
# Value so far
2829
value = datetime.timedelta()
2830
found_token = None
2831
# Following valid tokens
2832
followers = frozenset((token_duration, ))
2833
# String left to parse
2834
s = duration
2835
# Loop until end token is found
2836
while found_token is not token_end:
2837
# Search for any currently valid tokens
2838
for token in followers:
2839
match = token.regexp.match(s)
2840
if match is not None:
2841
# Token found
2842
if token.value is not None:
2843
# Value found, parse digits
2844
factor = int(match.group(1), 10)
2845
# Add to value so far
2846
value += factor * token.value
2847
# Strip token from string
2848
s = token.regexp.sub("", s, 1)
2849
# Go to found token
2850
found_token = token
2851
# Set valid next tokens
2852
followers = found_token.followers
2853
break
2854
else:
2855
# No currently valid tokens were found
2856
raise ValueError("Invalid RFC 3339 duration: {!r}"
2857
.format(duration))
2858
# End token found
2859
return value
2860
2861
2862
1602
def string_to_delta(interval):
2863
1603
"""Parse a string and return a datetime.timedelta
2864
2865
>>> string_to_delta('7d') == datetime.timedelta(7)
2866
True
2867
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2868
True
2869
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2870
True
2871
>>> string_to_delta('24h') == datetime.timedelta(1)
2872
True
2873
>>> string_to_delta('1w') == datetime.timedelta(7)
2874
True
2875
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2876
True
1604
1605
>>> string_to_delta('7d')
1606
datetime.timedelta(7)
1607
>>> string_to_delta('60s')
1608
datetime.timedelta(0, 60)
1609
>>> string_to_delta('60m')
1610
datetime.timedelta(0, 3600)
1611
>>> string_to_delta('24h')
1612
datetime.timedelta(1)
1613
>>> string_to_delta('1w')
1614
datetime.timedelta(7)
1615
>>> string_to_delta('5m 30s')
1616
datetime.timedelta(0, 330)
2877
1617
"""
2878
2879
try:
2880
return rfc3339_duration_to_delta(interval)
2881
except ValueError:
2882
pass
2883
2884
1618
timevalue = datetime.timedelta(0)
2885
1619
for s in interval.split():
2886
1620
try:
2887
suffix = s[-1]
1621
suffix = unicode(s[-1])
2888
1622
value = int(s[:-1])
2889
1623
if suffix == "d":
2890
1624
delta = datetime.timedelta(value)
2897
1631
elif suffix == "w":
2898
1632
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2899
1633
else:
2900
raise ValueError("Unknown suffix {!r}".format(suffix))
2901
except IndexError as e:
1634
raise ValueError("Unknown suffix %r" % suffix)
1635
except (ValueError, IndexError) as e:
2902
1636
raise ValueError(*(e.args))
2903
1637
timevalue += delta
2904
1638
return timevalue
2905
1639
2906
1640
2907
def daemon(nochdir=False, noclose=False):
1641
def if_nametoindex(interface):
1642
"""Call the C function if_nametoindex(), or equivalent
1643
1644
Note: This function cannot accept a unicode string."""
1645
global if_nametoindex
1646
try:
1647
if_nametoindex = (ctypes.cdll.LoadLibrary
1648
(ctypes.util.find_library("c"))
1649
.if_nametoindex)
1650
except (OSError, AttributeError):
1651
logger.warning("Doing if_nametoindex the hard way")
1652
def if_nametoindex(interface):
1653
"Get an interface index the hard way, i.e. using fcntl()"
1654
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1655
with contextlib.closing(socket.socket()) as s:
1656
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1657
struct.pack(str("16s16x"),
1658
interface))
1659
interface_index = struct.unpack(str("I"),
1660
ifreq[16:20])[0]
1661
return interface_index
1662
return if_nametoindex(interface)
1663
1664
1665
def daemon(nochdir = False, noclose = False):
2908
1666
"""See daemon(3). Standard BSD Unix function.
2909
1667
2910
1668
This should really exist as os.daemon, but it doesn't (yet)."""
2911
1669
if os.fork():
2912
1670
sys.exit()
2917
1675
sys.exit()
2918
1676
if not noclose:
2919
1677
# Close all standard open file descriptors
2920
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1678
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2921
1679
if not stat.S_ISCHR(os.fstat(null).st_mode):
2922
1680
raise OSError(errno.ENODEV,
2923
"{} not a character device"
2924
.format(os.devnull))
1681
"%s not a character device"
1682
% os.path.devnull)
2925
1683
os.dup2(null, sys.stdin.fileno())
2926
1684
os.dup2(null, sys.stdout.fileno())
2927
1685
os.dup2(null, sys.stderr.fileno())
2930
1688
2931
1689
2932
1690
def main():
2933
1691
2934
1692
##################################################################
2935
1693
# Parsing of options, both command line and config file
2936
1694
2937
1695
parser = argparse.ArgumentParser()
2938
1696
parser.add_argument("-v", "--version", action="version",
2939
version="%(prog)s {}".format(version),
1697
version = "%%(prog)s %s" % version,
2940
1698
help="show version number and exit")
2941
1699
parser.add_argument("-i", "--interface", metavar="IF",
2942
1700
help="Bind to interface IF")
2948
1706
help="Run self-test")
2949
1707
parser.add_argument("--debug", action="store_true",
2950
1708
help="Debug mode; run in foreground and log"
2951
" to terminal", default=None)
1709
" to terminal")
2952
1710
parser.add_argument("--debuglevel", metavar="LEVEL",
2953
1711
help="Debug level for stdout output")
2954
1712
parser.add_argument("--priority", help="GnuTLS"
2961
1719
" files")
2962
1720
parser.add_argument("--no-dbus", action="store_false",
2963
1721
dest="use_dbus", help="Do not provide D-Bus"
2964
" system bus interface", default=None)
1722
" system bus interface")
2965
1723
parser.add_argument("--no-ipv6", action="store_false",
2966
dest="use_ipv6", help="Do not use IPv6",
2967
default=None)
2968
parser.add_argument("--no-restore", action="store_false",
2969
dest="restore", help="Do not restore stored"
2970
" state", default=None)
2971
parser.add_argument("--socket", type=int,
2972
help="Specify a file descriptor to a network"
2973
" socket to use instead of creating one")
2974
parser.add_argument("--statedir", metavar="DIR",
2975
help="Directory to save/restore state in")
2976
parser.add_argument("--foreground", action="store_true",
2977
help="Run in foreground", default=None)
2978
parser.add_argument("--no-zeroconf", action="store_false",
2979
dest="zeroconf", help="Do not use Zeroconf",
2980
default=None)
2981
1724
dest="use_ipv6", help="Do not use IPv6")
2982
1725
options = parser.parse_args()
2983
1726
1727
if options.check:
1728
import doctest
1729
doctest.testmod()
1730
sys.exit()
1731
2984
1732
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1733
server_defaults = { "interface": "",
1734
"address": "",
1735
"port": "",
1736
"debug": "False",
1737
"priority":
1738
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1739
"servicename": "Mandos",
1740
"use_dbus": "True",
1741
"use_ipv6": "True",
1742
"debuglevel": "",
1743
}
1744
3008
1745
# Parse config file for server-global settings
3009
server_config = configparser.ConfigParser(server_defaults)
1746
server_config = configparser.SafeConfigParser(server_defaults)
3010
1747
del server_defaults
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3012
# Convert the ConfigParser object to a dict
1748
server_config.read(os.path.join(options.configdir,
1749
"mandos.conf"))
1750
# Convert the SafeConfigParser object to a dict
3013
1751
server_settings = server_config.defaults()
3014
1752
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
1753
for option in ("debug", "use_dbus", "use_ipv6"):
3017
1754
server_settings[option] = server_config.getboolean("DEFAULT",
3018
1755
option)
3019
1756
if server_settings["port"]:
3020
1757
server_settings["port"] = server_config.getint("DEFAULT",
3021
1758
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
3031
1759
del server_config
3032
1760
3033
1761
# Override the settings from the config file with command line
3034
1762
# options, if set.
3035
1763
for option in ("interface", "address", "port", "debug",
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1764
"priority", "servicename", "configdir",
1765
"use_dbus", "use_ipv6", "debuglevel"):
3039
1766
value = getattr(options, option)
3040
1767
if value is not None:
3041
1768
server_settings[option] = value
3042
1769
del options
3043
1770
# Force all strings to be unicode
3044
1771
for option in server_settings.keys():
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1772
if type(server_settings[option]) is str:
1773
server_settings[option] = unicode(server_settings[option])
3055
1774
# Now we have our good server settings in "server_settings"
3056
1775
3057
1776
##################################################################
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
1777
3064
1778
# For convenience
3065
1779
debug = server_settings["debug"]
3066
1780
debuglevel = server_settings["debuglevel"]
3067
1781
use_dbus = server_settings["use_dbus"]
3068
1782
use_ipv6 = server_settings["use_ipv6"]
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
3074
if debug:
3075
initlogger(debug, logging.DEBUG)
3076
else:
3077
if not debuglevel:
3078
initlogger(debug)
3079
else:
3080
level = getattr(logging, debuglevel.upper())
3081
initlogger(debug, level)
3082
1783
3083
1784
if server_settings["servicename"] != "Mandos":
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
1785
syslogger.setFormatter(logging.Formatter
1786
('Mandos (%s) [%%(process)d]:'
1787
' %%(levelname)s: %%(message)s'
1788
% server_settings["servicename"]))
1789
3089
1790
# Parse config file with clients
3090
client_config = configparser.ConfigParser(Client.client_defaults)
1791
client_defaults = { "timeout": "1h",
1792
"interval": "5m",
1793
"checker": "fping -q -- %%(host)s",
1794
"host": "",
1795
"approval_delay": "0s",
1796
"approval_duration": "1s",
1797
}
1798
client_config = configparser.SafeConfigParser(client_defaults)
3091
1799
client_config.read(os.path.join(server_settings["configdir"],
3092
1800
"clients.conf"))
3093
1801
3094
1802
global mandos_dbus_service
3095
1803
mandos_dbus_service = None
3096
3097
socketfd = None
3098
if server_settings["socket"] != "":
3099
socketfd = server_settings["socket"]
3100
tcp_server = MandosServer(
3101
(server_settings["address"], server_settings["port"]),
3102
ClientHandler,
3103
interface=(server_settings["interface"] or None),
3104
use_ipv6=use_ipv6,
3105
gnutls_priority=server_settings["priority"],
3106
use_dbus=use_dbus,
3107
socketfd=socketfd)
3108
if not foreground:
3109
pidfilename = "/run/mandos.pid"
3110
if not os.path.isdir("/run/."):
3111
pidfilename = "/var/run/mandos.pid"
3112
pidfile = None
3113
try:
3114
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3115
except IOError as e:
3116
logger.error("Could not open file %r", pidfilename,
3117
exc_info=e)
3118
3119
for name, group in (("_mandos", "_mandos"),
3120
("mandos", "mandos"),
3121
("nobody", "nogroup")):
3122
try:
3123
uid = pwd.getpwnam(name).pw_uid
3124
gid = pwd.getpwnam(group).pw_gid
3125
break
1804
1805
tcp_server = MandosServer((server_settings["address"],
1806
server_settings["port"]),
1807
ClientHandler,
1808
interface=(server_settings["interface"]
1809
or None),
1810
use_ipv6=use_ipv6,
1811
gnutls_priority=
1812
server_settings["priority"],
1813
use_dbus=use_dbus)
1814
if not debug:
1815
pidfilename = "/var/run/mandos.pid"
1816
try:
1817
pidfile = open(pidfilename, "w")
1818
except IOError:
1819
logger.error("Could not open file %r", pidfilename)
1820
1821
try:
1822
uid = pwd.getpwnam("_mandos").pw_uid
1823
gid = pwd.getpwnam("_mandos").pw_gid
1824
except KeyError:
1825
try:
1826
uid = pwd.getpwnam("mandos").pw_uid
1827
gid = pwd.getpwnam("mandos").pw_gid
3126
1828
except KeyError:
3127
continue
3128
else:
3129
uid = 65534
3130
gid = 65534
1829
try:
1830
uid = pwd.getpwnam("nobody").pw_uid
1831
gid = pwd.getpwnam("nobody").pw_gid
1832
except KeyError:
1833
uid = 65534
1834
gid = 65534
3131
1835
try:
3132
1836
os.setgid(gid)
3133
1837
os.setuid(uid)
3134
if debug:
3135
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3136
gid))
3137
1838
except OSError as error:
3138
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3139
.format(uid, gid, os.strerror(error.errno)))
3140
if error.errno != errno.EPERM:
3141
raise
1839
if error[0] != errno.EPERM:
1840
raise error
1841
1842
if not debug and not debuglevel:
1843
syslogger.setLevel(logging.WARNING)
1844
console.setLevel(logging.WARNING)
1845
if debuglevel:
1846
level = getattr(logging, debuglevel.upper())
1847
syslogger.setLevel(level)
1848
console.setLevel(level)
3142
1849
3143
1850
if debug:
3144
1851
# Enable all possible GnuTLS debugging
3145
1852
3146
1853
# "Use a log level over 10 to enable all debugging options."
3147
1854
# - GnuTLS manual
3148
gnutls.global_set_log_level(11)
3149
3150
@gnutls.log_func
1855
gnutls.library.functions.gnutls_global_set_log_level(11)
1856
1857
@gnutls.library.types.gnutls_log_func
3151
1858
def debug_gnutls(level, string):
3152
1859
logger.debug("GnuTLS: %s", string[:-1])
3153
3154
gnutls.global_set_log_function(debug_gnutls)
3155
1860
1861
(gnutls.library.functions
1862
.gnutls_global_set_log_function(debug_gnutls))
1863
3156
1864
# Redirect stdin so all checkers get /dev/null
3157
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1865
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
1866
os.dup2(null, sys.stdin.fileno())
3159
1867
if null > 2:
3160
1868
os.close(null)
3161
1869
else:
1870
# No console logging
1871
logger.removeHandler(console)
1872
3162
1873
# Need to fork before connecting to D-Bus
3163
if not foreground:
1874
if not debug:
3164
1875
# Close all input and output, do double fork, etc.
3165
1876
daemon()
3166
3167
if gi.version_info < (3, 10, 2):
3168
# multiprocessing will use threads, so before we use GLib we
3169
# need to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
1877
3172
1878
global main_loop
3173
1879
# From the Avahi example code
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
1880
DBusGMainLoop(set_as_default=True )
1881
main_loop = gobject.MainLoop()
3176
1882
bus = dbus.SystemBus()
3177
1883
# End of Avahi example code
3178
1884
if use_dbus:
3179
1885
try:
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
1886
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1887
bus, do_not_queue=True)
1888
except dbus.exceptions.NameExistsException as e:
1889
logger.error(unicode(e) + ", disabling D-Bus")
3188
1890
use_dbus = False
3189
1891
server_settings["use_dbus"] = False
3190
1892
tcp_server.use_dbus = False
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
1893
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1894
service = AvahiService(name = server_settings["servicename"],
1895
servicetype = "_mandos._tcp",
1896
protocol = protocol, bus = bus)
1897
if server_settings["interface"]:
1898
service.interface = (if_nametoindex
1899
(str(server_settings["interface"])))
1900
3202
1901
global multiprocessing_manager
3203
1902
multiprocessing_manager = multiprocessing.Manager()
3204
1903
3205
1904
client_class = Client
3206
1905
if use_dbus:
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
3210
old_client_settings = {}
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
3221
# Get client data and settings from last running state.
3222
if server_settings["restore"]:
3223
try:
3224
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name, .host, and .checker_command
3253
for k in ("name", "host", "checker_command"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if "key_id" not in value:
3257
value["key_id"] = ""
3258
elif "fingerprint" not in value:
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host and .checker_command
3270
for value in old_client_settings.values():
3271
for attribute in ("host", "checker_command"):
3272
if isinstance(value[attribute], bytes):
3273
value[attribute] = (value[attribute]
3274
.decode("utf-8"))
3275
os.remove(stored_state_path)
3276
except IOError as e:
3277
if e.errno == errno.ENOENT:
3278
logger.warning("Could not load persistent state:"
3279
" {}".format(os.strerror(e.errno)))
3280
else:
3281
logger.critical("Could not load persistent state:",
3282
exc_info=e)
3283
raise
3284
except EOFError as e:
3285
logger.warning("Could not load persistent state: "
3286
"EOFError:",
3287
exc_info=e)
3288
3289
with PGPEngine() as pgp:
3290
for client_name, client in clients_data.items():
3291
# Skip removed clients
3292
if client_name not in client_settings:
3293
continue
3294
3295
# Decide which value to use after restoring saved state.
3296
# We have three different values: Old config file,
3297
# new config file, and saved state.
3298
# New config value takes precedence if it differs from old
3299
# config value, otherwise use saved state.
3300
for name, value in client_settings[client_name].items():
3301
try:
3302
# For each value in new config, check if it
3303
# differs from the old config value (Except for
3304
# the "secret" attribute)
3305
if (name != "secret"
3306
and (value !=
3307
old_client_settings[client_name][name])):
3308
client[name] = value
3309
except KeyError:
3310
pass
3311
3312
# Clients who has passed its expire date can still be
3313
# enabled if its last checker was successful. A Client
3314
# whose checker succeeded before we stored its state is
3315
# assumed to have successfully run all checkers during
3316
# downtime.
3317
if client["enabled"]:
3318
if datetime.datetime.utcnow() >= client["expires"]:
3319
if not client["last_checked_ok"]:
3320
logger.warning(
3321
"disabling client {} - Client never "
3322
"performed a successful checker".format(
3323
client_name))
3324
client["enabled"] = False
3325
elif client["last_checker_status"] != 0:
3326
logger.warning(
3327
"disabling client {} - Client last"
3328
" checker failed with error code"
3329
" {}".format(
3330
client_name,
3331
client["last_checker_status"]))
3332
client["enabled"] = False
3333
else:
3334
client["expires"] = (
3335
datetime.datetime.utcnow()
3336
+ client["timeout"])
3337
logger.debug("Last checker succeeded,"
3338
" keeping {} enabled".format(
3339
client_name))
1906
client_class = functools.partial(ClientDBus, bus = bus)
1907
def client_config_items(config, section):
1908
special_settings = {
1909
"approved_by_default":
1910
lambda: config.getboolean(section,
1911
"approved_by_default"),
1912
}
1913
for name, value in config.items(section):
3340
1914
try:
3341
client["secret"] = pgp.decrypt(
3342
client["encrypted_secret"],
3343
client_settings[client_name]["secret"])
3344
except PGPError:
3345
# If decryption fails, we use secret from new settings
3346
logger.debug("Failed to decrypt {} old secret".format(
3347
client_name))
3348
client["secret"] = (client_settings[client_name]
3349
["secret"])
3350
3351
# Add/remove clients based on new changes made to config
3352
for client_name in (set(old_client_settings)
3353
- set(client_settings)):
3354
del clients_data[client_name]
3355
for client_name in (set(client_settings)
3356
- set(old_client_settings)):
3357
clients_data[client_name] = client_settings[client_name]
3358
3359
# Create all client objects
3360
for client_name, client in clients_data.items():
3361
tcp_server.clients[client_name] = client_class(
3362
name=client_name,
3363
settings=client,
3364
server_settings=server_settings)
3365
1915
yield (name, special_settings[name]())
1916
except KeyError:
1917
yield (name, value)
1918
1919
tcp_server.clients.update(set(
1920
client_class(name = section,
1921
config= dict(client_config_items(
1922
client_config, section)))
1923
for section in client_config.sections()))
3366
1924
if not tcp_server.clients:
3367
1925
logger.warning("No clients defined")
3368
3369
if not foreground:
3370
if pidfile is not None:
3371
pid = os.getpid()
3372
try:
3373
with pidfile:
3374
print(pid, file=pidfile)
3375
except IOError:
3376
logger.error("Could not write to file %r with PID %d",
3377
pidfilename, pid)
3378
del pidfile
1926
1927
if not debug:
1928
try:
1929
with pidfile:
1930
pid = os.getpid()
1931
pidfile.write(str(pid) + "\n".encode("utf-8"))
1932
del pidfile
1933
except IOError:
1934
logger.error("Could not write to file %r with PID %d",
1935
pidfilename, pid)
1936
except NameError:
1937
# "pidfile" was never created
1938
pass
3379
1939
del pidfilename
3380
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
lambda: main_loop.quit() and False)
3384
1940
1941
signal.signal(signal.SIGINT, signal.SIG_IGN)
1942
1943
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1944
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1945
3385
1946
if use_dbus:
3386
3387
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
1947
class MandosDBusService(dbus.service.Object):
3390
1948
"""A D-Bus proxy object"""
3391
3392
1949
def __init__(self):
3393
1950
dbus.service.Object.__init__(self, bus, "/")
3394
3395
_interface = "se.recompile.Mandos"
3396
1951
_interface = "se.bsnet.fukt.Mandos"
1952
3397
1953
@dbus.service.signal(_interface, signature="o")
3398
1954
def ClientAdded(self, objpath):
3399
1955
"D-Bus signal"
3400
1956
pass
3401
1957
3402
1958
@dbus.service.signal(_interface, signature="ss")
3403
def ClientNotFound(self, key_id, address):
1959
def ClientNotFound(self, fingerprint, address):
3404
1960
"D-Bus signal"
3405
1961
pass
3406
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
"true"})
1962
3409
1963
@dbus.service.signal(_interface, signature="os")
3410
1964
def ClientRemoved(self, objpath, name):
3411
1965
"D-Bus signal"
3412
1966
pass
3413
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
"true"})
1967
3416
1968
@dbus.service.method(_interface, out_signature="ao")
3417
1969
def GetAllClients(self):
3418
1970
"D-Bus method"
3419
return dbus.Array(c.dbus_object_path for c in
3420
tcp_server.clients.values())
3421
3422
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3423
"true"})
1971
return dbus.Array(c.dbus_object_path
1972
for c in tcp_server.clients)
1973
3424
1974
@dbus.service.method(_interface,
3425
1975
out_signature="a{oa{sv}}")
3426
1976
def GetAllClientsWithProperties(self):
3427
1977
"D-Bus method"
3428
1978
return dbus.Dictionary(
3429
{c.dbus_object_path: c.GetAll(
3430
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
1979
((c.dbus_object_path, c.GetAll(""))
1980
for c in tcp_server.clients),
3432
1981
signature="oa{sv}")
3433
1982
3434
1983
@dbus.service.method(_interface, in_signature="o")
3435
1984
def RemoveClient(self, object_path):
3436
1985
"D-Bus method"
3437
for c in tcp_server.clients.values():
1986
for c in tcp_server.clients:
3438
1987
if c.dbus_object_path == object_path:
3439
del tcp_server.clients[c.name]
1988
tcp_server.clients.remove(c)
3440
1989
c.remove_from_connection()
3441
# Don't signal the disabling
1990
# Don't signal anything except ClientRemoved
3442
1991
c.disable(quiet=True)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
1992
# Emit D-Bus signal
1993
self.ClientRemoved(object_path, c.name)
3445
1994
return
3446
1995
raise KeyError(object_path)
3447
1996
3448
1997
del _interface
3449
3450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
3452
def GetManagedObjects(self):
3453
"""D-Bus method"""
3454
return dbus.Dictionary(
3455
{client.dbus_object_path:
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3461
3462
def client_added_signal(self, client):
3463
"""Send the new standard signal and the old signal"""
3464
if use_dbus:
3465
# New standard signal
3466
self.InterfacesAdded(
3467
client.dbus_object_path,
3468
dbus.Dictionary(
3469
{interface: client.GetAll(interface)
3470
for interface in
3471
client._get_all_interface_names()}))
3472
# Old signal
3473
self.ClientAdded(client.dbus_object_path)
3474
3475
def client_removed_signal(self, client):
3476
"""Send the new standard signal and the old signal"""
3477
if use_dbus:
3478
# New standard signal
3479
self.InterfacesRemoved(
3480
client.dbus_object_path,
3481
client._get_all_interface_names())
3482
# Old signal
3483
self.ClientRemoved(client.dbus_object_path,
3484
client.name)
3485
1998
3486
1999
mandos_dbus_service = MandosDBusService()
3487
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3491
wn = wnull
3492
2000
3493
2001
def cleanup():
3494
2002
"Cleanup function; run on exit"
3495
if zeroconf:
3496
service.cleanup()
3497
3498
mp.active_children()
3499
wn.close()
3500
if not (tcp_server.clients or client_settings):
3501
return
3502
3503
# Store client before exiting. Secrets are encrypted with key
3504
# based on what config file has. If config file is
3505
# removed/edited, old secret will thus be unrecovable.
3506
clients = {}
3507
with PGPEngine() as pgp:
3508
for client in tcp_server.clients.values():
3509
key = client_settings[client.name]["secret"]
3510
client.encrypted_secret = pgp.encrypt(client.secret,
3511
key)
3512
client_dict = {}
3513
3514
# A list of attributes that can not be pickled
3515
# + secret.
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
3518
for name, typ in inspect.getmembers(dbus.service
3519
.Object):
3520
exclude.add(name)
3521
3522
client_dict["encrypted_secret"] = (client
3523
.encrypted_secret)
3524
for attr in client.client_structure:
3525
if attr not in exclude:
3526
client_dict[attr] = getattr(client, attr)
3527
3528
clients[client.name] = client_dict
3529
del client_settings[client.name]["secret"]
3530
3531
try:
3532
with tempfile.NamedTemporaryFile(
3533
mode='wb',
3534
suffix=".pickle",
3535
prefix='clients-',
3536
dir=os.path.dirname(stored_state_path),
3537
delete=False) as stored_state:
3538
pickle.dump((clients, client_settings), stored_state,
3539
protocol=2)
3540
tempname = stored_state.name
3541
os.rename(tempname, stored_state_path)
3542
except (IOError, OSError) as e:
3543
if not debug:
3544
try:
3545
os.remove(tempname)
3546
except NameError:
3547
pass
3548
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3549
logger.warning("Could not save persistent state: {}"
3550
.format(os.strerror(e.errno)))
3551
else:
3552
logger.warning("Could not save persistent state:",
3553
exc_info=e)
3554
raise
3555
3556
# Delete all clients, and settings from config
2003
service.cleanup()
2004
3557
2005
while tcp_server.clients:
3558
name, client = tcp_server.clients.popitem()
2006
client = tcp_server.clients.pop()
3559
2007
if use_dbus:
3560
2008
client.remove_from_connection()
3561
# Don't signal the disabling
2009
client.disable_hook = None
2010
# Don't signal anything except ClientRemoved
3562
2011
client.disable(quiet=True)
3563
# Emit D-Bus signal for removal
3564
2012
if use_dbus:
3565
mandos_dbus_service.client_removed_signal(client)
3566
client_settings.clear()
3567
2013
# Emit D-Bus signal
2014
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2015
client.name)
2016
3568
2017
atexit.register(cleanup)
3569
3570
for client in tcp_server.clients.values():
2018
2019
for client in tcp_server.clients:
3571
2020
if use_dbus:
3572
# Emit D-Bus signal for adding
3573
mandos_dbus_service.client_added_signal(client)
3574
# Need to initiate checking of clients
3575
if client.enabled:
3576
client.init_checker()
3577
2021
# Emit D-Bus signal
2022
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2023
client.enable()
2024
3578
2025
tcp_server.enable()
3579
2026
tcp_server.server_activate()
3580
2027
3581
2028
# Find out what port we got
3582
if zeroconf:
3583
service.port = tcp_server.socket.getsockname()[1]
2029
service.port = tcp_server.socket.getsockname()[1]
3584
2030
if use_ipv6:
3585
2031
logger.info("Now listening on address %r, port %d,"
3586
" flowinfo %d, scope_id %d",
3587
*tcp_server.socket.getsockname())
2032
" flowinfo %d, scope_id %d"
2033
% tcp_server.socket.getsockname())
3588
2034
else: # IPv4
3589
logger.info("Now listening on address %r, port %d",
3590
*tcp_server.socket.getsockname())
3591
3592
# service.interface = tcp_server.socket.getsockname()[3]
3593
2035
logger.info("Now listening on address %r, port %d"
2036
% tcp_server.socket.getsockname())
2037
2038
#service.interface = tcp_server.socket.getsockname()[3]
2039
3594
2040
try:
3595
if zeroconf:
3596
# From the Avahi example code
3597
try:
3598
service.activate()
3599
except dbus.exceptions.DBusException as error:
3600
logger.critical("D-Bus Exception", exc_info=error)
3601
cleanup()
3602
sys.exit(1)
3603
# End of Avahi example code
3604
3605
GLib.io_add_watch(
3606
GLib.IOChannel.unix_new(tcp_server.fileno()),
3607
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3608
lambda *args, **kwargs: (tcp_server.handle_request
3609
(*args[2:], **kwargs) or True))
3610
2041
# From the Avahi example code
2042
try:
2043
service.activate()
2044
except dbus.exceptions.DBusException as error:
2045
logger.critical("DBusException: %s", error)
2046
cleanup()
2047
sys.exit(1)
2048
# End of Avahi example code
2049
2050
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2051
lambda *args, **kwargs:
2052
(tcp_server.handle_request
2053
(*args[2:], **kwargs) or True))
2054
3611
2055
logger.debug("Starting main loop")
3612
2056
main_loop.run()
3613
2057
except AvahiError as error:
3614
logger.critical("Avahi Error", exc_info=error)
2058
logger.critical("AvahiError: %s", error)
3615
2059
cleanup()
3616
2060
sys.exit(1)
3617
2061
except KeyboardInterrupt:
3622
2066
# Must run before the D-Bus bus name gets deregistered
3623
2067
cleanup()
3624
2068
3625
3626
def should_only_run_tests():
3627
parser = argparse.ArgumentParser(add_help=False)
3628
parser.add_argument("--check", action='store_true')
3629
args, unknown_args = parser.parse_known_args()
3630
run_tests = args.check
3631
if run_tests:
3632
# Remove --check argument from sys.argv
3633
sys.argv[1:] = unknown_args
3634
return run_tests
3635
3636
# Add all tests from doctest strings
3637
def load_tests(loader, tests, none):
3638
import doctest
3639
tests.addTests(doctest.DocTestSuite())
3640
return tests
3641
3642
2069
if __name__ == '__main__':
3643
try:
3644
if should_only_run_tests():
3645
# Call using ./mandos --check [--verbose]
3646
unittest.main()
3647
else:
3648
main()
3649
finally:
3650
logging.shutdown()
2070
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0