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- Committer: Teddy Hogeborn
- Date: 2011-10-09 15:19:47 UTC
- mto: (505.2.5 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 513.
- Revision ID: teddy@recompile.se-20111009151947-w884h03ctjj4qnp6
* mandos (Client.checked_ok): Set "expires" after setting timeout.
(MultiprocessingMixIn.process_request): Return process object.
(MultiprocessingMixInWithPipe.process_request): Receive proc object
and pass it to
add_pipe. Do not
use super().
(MultiprocessingMixInWithPipe.add_pipe): Take "proc" argument. All
callers changed.
(MandosServer.add_pipe): Take "proc" argument. All callers changed.
(MandosServer.handle_ipc): Take "proc" argument. All callers
changed. Wait for process completion
when pipe closes.
(main/cleanup): Remove any zombies.
(MultiprocessingMixIn.process_request): Return process object.
(MultiprocessingMixInWithPipe.process_request): Receive proc object
and pass it to
add_pipe. Do not
use super().
(MultiprocessingMixInWithPipe.add_pipe): Take "proc" argument. All
callers changed.
(MandosServer.add_pipe): Take "proc" argument. All callers changed.
(MandosServer.handle_ipc): Take "proc" argument. All callers
changed. Wait for process completion
when pipe closes.
(main/cleanup): Remove any zombies.
- 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
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
66
83
67
import dbus
84
68
import dbus.service
85
import gi
86
from gi.repository import GLib
69
import gobject
70
import avahi
87
71
from dbus.mainloop.glib import DBusGMainLoop
88
72
import ctypes
89
73
import ctypes.util
90
74
import xml.dom.minidom
91
75
import inspect
92
76
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
97
# Add collections.abc.Callable if it does not exist
98
try:
99
collections.abc.Callable
100
except AttributeError:
101
class abc:
102
Callable = collections.Callable
103
collections.abc = abc
104
del abc
105
106
# Show warnings by default
107
if not sys.warnoptions:
108
import warnings
109
warnings.simplefilter("default")
110
111
# Try to find the value of SO_BINDTODEVICE:
112
try:
113
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
114
# newer, and it is also the most natural place for it:
77
try:
115
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
116
79
except AttributeError:
117
80
try:
118
# This is where SO_BINDTODEVICE was up to and including Python
119
# 2.6, and also 3.2:
120
81
from IN import SO_BINDTODEVICE
121
82
except ImportError:
122
# In Python 2.7 it seems to have been removed entirely.
123
# Try running the C preprocessor:
124
try:
125
cc = subprocess.Popen(["cc", "--language=c", "-E",
126
"/dev/stdin"],
127
stdin=subprocess.PIPE,
128
stdout=subprocess.PIPE)
129
stdout = cc.communicate(
130
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
131
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
132
except (OSError, ValueError, IndexError):
133
# No value found
134
SO_BINDTODEVICE = None
135
136
if sys.version_info < (3, 2):
137
configparser.Configparser = configparser.SafeConfigParser
138
139
version = "1.8.9"
140
stored_state_file = "clients.pickle"
141
142
logger = logging.getLogger()
143
logging.captureWarnings(True) # Show warnings via the logging system
144
syslogger = None
145
146
try:
147
if_nametoindex = ctypes.cdll.LoadLibrary(
148
ctypes.util.find_library("c")).if_nametoindex
149
except (OSError, AttributeError):
150
151
def if_nametoindex(interface):
152
"Get an interface index the hard way, i.e. using fcntl()"
153
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
154
with contextlib.closing(socket.socket()) as s:
155
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
156
struct.pack(b"16s16x", interface))
157
interface_index = struct.unpack("I", ifreq[16:20])[0]
158
return interface_index
159
160
161
def copy_function(func):
162
"""Make a copy of a function"""
163
if sys.version_info.major == 2:
164
return types.FunctionType(func.func_code,
165
func.func_globals,
166
func.func_name,
167
func.func_defaults,
168
func.func_closure)
169
else:
170
return types.FunctionType(func.__code__,
171
func.__globals__,
172
func.__name__,
173
func.__defaults__,
174
func.__closure__)
175
176
177
def initlogger(debug, level=logging.WARNING):
178
"""init logger and add loglevel"""
179
180
global syslogger
181
syslogger = (logging.handlers.SysLogHandler(
182
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
183
address="/dev/log"))
184
syslogger.setFormatter(logging.Formatter
185
('Mandos [%(process)d]: %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(syslogger)
188
189
if debug:
190
console = logging.StreamHandler()
191
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
192
' [%(process)d]:'
193
' %(levelname)s:'
194
' %(message)s'))
195
logger.addHandler(console)
196
logger.setLevel(level)
197
198
199
class PGPError(Exception):
200
"""Exception if encryption/decryption fails"""
201
pass
202
203
204
class PGPEngine:
205
"""A simple class for OpenPGP symmetric encryption & decryption"""
206
207
def __init__(self):
208
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
209
self.gpg = "gpg"
210
try:
211
output = subprocess.check_output(["gpgconf"])
212
for line in output.splitlines():
213
name, text, path = line.split(b":")
214
if name == b"gpg":
215
self.gpg = path
216
break
217
except OSError as e:
218
if e.errno != errno.ENOENT:
219
raise
220
self.gnupgargs = ['--batch',
221
'--homedir', self.tempdir,
222
'--force-mdc',
223
'--quiet']
224
# Only GPG version 1 has the --no-use-agent option.
225
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
226
self.gnupgargs.append("--no-use-agent")
227
228
def __enter__(self):
229
return self
230
231
def __exit__(self, exc_type, exc_value, traceback):
232
self._cleanup()
233
return False
234
235
def __del__(self):
236
self._cleanup()
237
238
def _cleanup(self):
239
if self.tempdir is not None:
240
# Delete contents of tempdir
241
for root, dirs, files in os.walk(self.tempdir,
242
topdown=False):
243
for filename in files:
244
os.remove(os.path.join(root, filename))
245
for dirname in dirs:
246
os.rmdir(os.path.join(root, dirname))
247
# Remove tempdir
248
os.rmdir(self.tempdir)
249
self.tempdir = None
250
251
def password_encode(self, password):
252
# Passphrase can not be empty and can not contain newlines or
253
# NUL bytes. So we prefix it and hex encode it.
254
encoded = b"mandos" + binascii.hexlify(password)
255
if len(encoded) > 2048:
256
# GnuPG can't handle long passwords, so encode differently
257
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
258
.replace(b"\n", b"\\n")
259
.replace(b"\0", b"\\x00"))
260
return encoded
261
262
def encrypt(self, data, password):
263
passphrase = self.password_encode(password)
264
with tempfile.NamedTemporaryFile(
265
dir=self.tempdir) as passfile:
266
passfile.write(passphrase)
267
passfile.flush()
268
proc = subprocess.Popen([self.gpg, '--symmetric',
269
'--passphrase-file',
270
passfile.name]
271
+ self.gnupgargs,
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
ciphertext, err = proc.communicate(input=data)
276
if proc.returncode != 0:
277
raise PGPError(err)
278
return ciphertext
279
280
def decrypt(self, data, password):
281
passphrase = self.password_encode(password)
282
with tempfile.NamedTemporaryFile(
283
dir=self.tempdir) as passfile:
284
passfile.write(passphrase)
285
passfile.flush()
286
proc = subprocess.Popen([self.gpg, '--decrypt',
287
'--passphrase-file',
288
passfile.name]
289
+ self.gnupgargs,
290
stdin=subprocess.PIPE,
291
stdout=subprocess.PIPE,
292
stderr=subprocess.PIPE)
293
decrypted_plaintext, err = proc.communicate(input=data)
294
if proc.returncode != 0:
295
raise PGPError(err)
296
return decrypted_plaintext
297
298
299
# Pretend that we have an Avahi module
300
class avahi:
301
"""This isn't so much a class as it is a module-like namespace."""
302
IF_UNSPEC = -1 # avahi-common/address.h
303
PROTO_UNSPEC = -1 # avahi-common/address.h
304
PROTO_INET = 0 # avahi-common/address.h
305
PROTO_INET6 = 1 # avahi-common/address.h
306
DBUS_NAME = "org.freedesktop.Avahi"
307
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
308
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
309
DBUS_PATH_SERVER = "/"
310
311
@staticmethod
312
def string_array_to_txt_array(t):
313
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
314
for s in t), signature="ay")
315
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
316
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
317
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
318
SERVER_INVALID = 0 # avahi-common/defs.h
319
SERVER_REGISTERING = 1 # avahi-common/defs.h
320
SERVER_RUNNING = 2 # avahi-common/defs.h
321
SERVER_COLLISION = 3 # avahi-common/defs.h
322
SERVER_FAILURE = 4 # avahi-common/defs.h
323
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
324
103
325
104
class AvahiError(Exception):
326
105
def __init__(self, value, *args, **kwargs):
327
106
self.value = value
328
return super(AvahiError, self).__init__(value, *args,
329
**kwargs)
330
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
331
110
332
111
class AvahiServiceError(AvahiError):
333
112
pass
334
113
335
336
114
class AvahiGroupError(AvahiError):
337
115
pass
338
116
339
117
340
class AvahiService:
118
class AvahiService(object):
341
119
"""An Avahi (Zeroconf) service.
342
120
343
121
Attributes:
344
122
interface: integer; avahi.IF_UNSPEC or an interface index.
345
123
Used to optionally bind to the specified interface.
346
124
name: string; Example: 'Mandos'
347
125
type: string; Example: '_mandos._tcp'.
348
See <https://www.iana.org/assignments/service-names-port-numbers>
126
See <http://www.dns-sd.org/ServiceTypes.html>
349
127
port: integer; what port to announce
350
128
TXT: list of strings; TXT record for the service
351
129
domain: string; Domain to publish on, default to .local if empty.
357
135
server: D-Bus Server
358
136
bus: dbus.SystemBus()
359
137
"""
360
361
def __init__(self,
362
interface=avahi.IF_UNSPEC,
363
name=None,
364
servicetype=None,
365
port=None,
366
TXT=None,
367
domain="",
368
host="",
369
max_renames=32768,
370
protocol=avahi.PROTO_UNSPEC,
371
bus=None):
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
372
142
self.interface = interface
373
143
self.name = name
374
144
self.type = servicetype
383
153
self.server = None
384
154
self.bus = bus
385
155
self.entry_group_state_changed_match = None
386
387
def rename(self, remove=True):
156
def rename(self):
388
157
"""Derived from the Avahi example code"""
389
158
if self.rename_count >= self.max_renames:
390
159
logger.critical("No suitable Zeroconf service name found"
391
160
" after %i retries, exiting.",
392
161
self.rename_count)
393
162
raise AvahiServiceError("Too many renames")
394
self.name = str(
395
self.server.GetAlternativeServiceName(self.name))
396
self.rename_count += 1
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
397
165
logger.info("Changing Zeroconf service name to %r ...",
398
166
self.name)
399
if remove:
400
self.remove()
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
401
172
try:
402
173
self.add()
403
174
except dbus.exceptions.DBusException as error:
404
if (error.get_dbus_name()
405
== "org.freedesktop.Avahi.CollisionError"):
406
logger.info("Local Zeroconf service name collision.")
407
return self.rename(remove=False)
408
else:
409
logger.critical("D-Bus Exception", exc_info=error)
410
self.cleanup()
411
os._exit(1)
412
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
178
self.rename_count += 1
413
179
def remove(self):
414
180
"""Derived from the Avahi example code"""
415
181
if self.entry_group_state_changed_match is not None:
417
183
self.entry_group_state_changed_match = None
418
184
if self.group is not None:
419
185
self.group.Reset()
420
421
186
def add(self):
422
187
"""Derived from the Avahi example code"""
423
188
self.remove()
428
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
429
194
self.entry_group_state_changed_match = (
430
195
self.group.connect_to_signal(
431
'StateChanged', self.entry_group_state_changed))
196
'StateChanged', self .entry_group_state_changed))
432
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
433
198
self.name, self.type)
434
199
self.group.AddService(
440
205
dbus.UInt16(self.port),
441
206
avahi.string_array_to_txt_array(self.TXT))
442
207
self.group.Commit()
443
444
208
def entry_group_state_changed(self, state, error):
445
209
"""Derived from the Avahi example code"""
446
210
logger.debug("Avahi entry group state change: %i", state)
447
211
448
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
449
213
logger.debug("Zeroconf service established.")
450
214
elif state == avahi.ENTRY_GROUP_COLLISION:
452
216
self.rename()
453
217
elif state == avahi.ENTRY_GROUP_FAILURE:
454
218
logger.critical("Avahi: Error in group state changed %s",
455
str(error))
456
raise AvahiGroupError("State changed: {!s}".format(error))
457
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
458
222
def cleanup(self):
459
223
"""Derived from the Avahi example code"""
460
224
if self.group is not None:
461
225
try:
462
226
self.group.Free()
463
227
except (dbus.exceptions.UnknownMethodException,
464
dbus.exceptions.DBusException):
228
dbus.exceptions.DBusException) as e:
465
229
pass
466
230
self.group = None
467
231
self.remove()
468
469
232
def server_state_changed(self, state, error=None):
470
233
"""Derived from the Avahi example code"""
471
234
logger.debug("Avahi server state change: %i", state)
472
bad_states = {
473
avahi.SERVER_INVALID: "Zeroconf server invalid",
474
avahi.SERVER_REGISTERING: None,
475
avahi.SERVER_COLLISION: "Zeroconf server name collision",
476
avahi.SERVER_FAILURE: "Zeroconf server failure",
477
}
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
478
242
if state in bad_states:
479
243
if bad_states[state] is not None:
480
244
if error is None:
483
247
logger.error(bad_states[state] + ": %r", error)
484
248
self.cleanup()
485
249
elif state == avahi.SERVER_RUNNING:
486
try:
487
self.add()
488
except dbus.exceptions.DBusException as error:
489
if (error.get_dbus_name()
490
== "org.freedesktop.Avahi.CollisionError"):
491
logger.info("Local Zeroconf service name"
492
" collision.")
493
return self.rename(remove=False)
494
else:
495
logger.critical("D-Bus Exception", exc_info=error)
496
self.cleanup()
497
os._exit(1)
250
self.add()
498
251
else:
499
252
if error is None:
500
253
logger.debug("Unknown state: %r", state)
501
254
else:
502
255
logger.debug("Unknown state: %r: %r", state, error)
503
504
256
def activate(self):
505
257
"""Derived from the Avahi example code"""
506
258
if self.server is None:
510
262
follow_name_owner_changes=True),
511
263
avahi.DBUS_INTERFACE_SERVER)
512
264
self.server.connect_to_signal("StateChanged",
513
self.server_state_changed)
265
self.server_state_changed)
514
266
self.server_state_changed(self.server.GetState())
515
267
516
268
517
class AvahiServiceToSyslog(AvahiService):
518
def rename(self, *args, **kwargs):
519
"""Add the new name to the syslog messages"""
520
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
521
syslogger.setFormatter(logging.Formatter(
522
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
523
.format(self.name)))
524
return ret
525
526
527
# Pretend that we have a GnuTLS module
528
class gnutls:
529
"""This isn't so much a class as it is a module-like namespace."""
530
531
library = ctypes.util.find_library("gnutls")
532
if library is None:
533
library = ctypes.util.find_library("gnutls-deb0")
534
_library = ctypes.cdll.LoadLibrary(library)
535
del library
536
537
# Unless otherwise indicated, the constants and types below are
538
# all from the gnutls/gnutls.h C header file.
539
540
# Constants
541
E_SUCCESS = 0
542
E_INTERRUPTED = -52
543
E_AGAIN = -28
544
CRT_OPENPGP = 2
545
CRT_RAWPK = 3
546
CLIENT = 2
547
SHUT_RDWR = 0
548
CRD_CERTIFICATE = 1
549
E_NO_CERTIFICATE_FOUND = -49
550
X509_FMT_DER = 0
551
NO_TICKETS = 1<<10
552
ENABLE_RAWPK = 1<<18
553
CTYPE_PEERS = 3
554
KEYID_USE_SHA256 = 1 # gnutls/x509.h
555
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
556
557
# Types
558
class session_int(ctypes.Structure):
559
_fields_ = []
560
session_t = ctypes.POINTER(session_int)
561
562
class certificate_credentials_st(ctypes.Structure):
563
_fields_ = []
564
certificate_credentials_t = ctypes.POINTER(
565
certificate_credentials_st)
566
certificate_type_t = ctypes.c_int
567
568
class datum_t(ctypes.Structure):
569
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
570
('size', ctypes.c_uint)]
571
572
class openpgp_crt_int(ctypes.Structure):
573
_fields_ = []
574
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
575
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
576
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
577
credentials_type_t = ctypes.c_int
578
transport_ptr_t = ctypes.c_void_p
579
close_request_t = ctypes.c_int
580
581
# Exceptions
582
class Error(Exception):
583
def __init__(self, message=None, code=None, args=()):
584
# Default usage is by a message string, but if a return
585
# code is passed, convert it to a string with
586
# gnutls.strerror()
587
self.code = code
588
if message is None and code is not None:
589
message = gnutls.strerror(code)
590
return super(gnutls.Error, self).__init__(
591
message, *args)
592
593
class CertificateSecurityError(Error):
594
pass
595
596
# Classes
597
class Credentials:
598
def __init__(self):
599
self._c_object = gnutls.certificate_credentials_t()
600
gnutls.certificate_allocate_credentials(
601
ctypes.byref(self._c_object))
602
self.type = gnutls.CRD_CERTIFICATE
603
604
def __del__(self):
605
gnutls.certificate_free_credentials(self._c_object)
606
607
class ClientSession:
608
def __init__(self, socket, credentials=None):
609
self._c_object = gnutls.session_t()
610
gnutls_flags = gnutls.CLIENT
611
if gnutls.check_version(b"3.5.6"):
612
gnutls_flags |= gnutls.NO_TICKETS
613
if gnutls.has_rawpk:
614
gnutls_flags |= gnutls.ENABLE_RAWPK
615
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
616
del gnutls_flags
617
gnutls.set_default_priority(self._c_object)
618
gnutls.transport_set_ptr(self._c_object, socket.fileno())
619
gnutls.handshake_set_private_extensions(self._c_object,
620
True)
621
self.socket = socket
622
if credentials is None:
623
credentials = gnutls.Credentials()
624
gnutls.credentials_set(self._c_object, credentials.type,
625
ctypes.cast(credentials._c_object,
626
ctypes.c_void_p))
627
self.credentials = credentials
628
629
def __del__(self):
630
gnutls.deinit(self._c_object)
631
632
def handshake(self):
633
return gnutls.handshake(self._c_object)
634
635
def send(self, data):
636
data = bytes(data)
637
data_len = len(data)
638
while data_len > 0:
639
data_len -= gnutls.record_send(self._c_object,
640
data[-data_len:],
641
data_len)
642
643
def bye(self):
644
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
645
646
# Error handling functions
647
def _error_code(result):
648
"""A function to raise exceptions on errors, suitable
649
for the 'restype' attribute on ctypes functions"""
650
if result >= 0:
651
return result
652
if result == gnutls.E_NO_CERTIFICATE_FOUND:
653
raise gnutls.CertificateSecurityError(code=result)
654
raise gnutls.Error(code=result)
655
656
def _retry_on_error(result, func, arguments):
657
"""A function to retry on some errors, suitable
658
for the 'errcheck' attribute on ctypes functions"""
659
while result < 0:
660
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
661
return _error_code(result)
662
result = func(*arguments)
663
return result
664
665
# Unless otherwise indicated, the function declarations below are
666
# all from the gnutls/gnutls.h C header file.
667
668
# Functions
669
priority_set_direct = _library.gnutls_priority_set_direct
670
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
671
ctypes.POINTER(ctypes.c_char_p)]
672
priority_set_direct.restype = _error_code
673
674
init = _library.gnutls_init
675
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
676
init.restype = _error_code
677
678
set_default_priority = _library.gnutls_set_default_priority
679
set_default_priority.argtypes = [session_t]
680
set_default_priority.restype = _error_code
681
682
record_send = _library.gnutls_record_send
683
record_send.argtypes = [session_t, ctypes.c_void_p,
684
ctypes.c_size_t]
685
record_send.restype = ctypes.c_ssize_t
686
record_send.errcheck = _retry_on_error
687
688
certificate_allocate_credentials = (
689
_library.gnutls_certificate_allocate_credentials)
690
certificate_allocate_credentials.argtypes = [
691
ctypes.POINTER(certificate_credentials_t)]
692
certificate_allocate_credentials.restype = _error_code
693
694
certificate_free_credentials = (
695
_library.gnutls_certificate_free_credentials)
696
certificate_free_credentials.argtypes = [
697
certificate_credentials_t]
698
certificate_free_credentials.restype = None
699
700
handshake_set_private_extensions = (
701
_library.gnutls_handshake_set_private_extensions)
702
handshake_set_private_extensions.argtypes = [session_t,
703
ctypes.c_int]
704
handshake_set_private_extensions.restype = None
705
706
credentials_set = _library.gnutls_credentials_set
707
credentials_set.argtypes = [session_t, credentials_type_t,
708
ctypes.c_void_p]
709
credentials_set.restype = _error_code
710
711
strerror = _library.gnutls_strerror
712
strerror.argtypes = [ctypes.c_int]
713
strerror.restype = ctypes.c_char_p
714
715
certificate_type_get = _library.gnutls_certificate_type_get
716
certificate_type_get.argtypes = [session_t]
717
certificate_type_get.restype = _error_code
718
719
certificate_get_peers = _library.gnutls_certificate_get_peers
720
certificate_get_peers.argtypes = [session_t,
721
ctypes.POINTER(ctypes.c_uint)]
722
certificate_get_peers.restype = ctypes.POINTER(datum_t)
723
724
global_set_log_level = _library.gnutls_global_set_log_level
725
global_set_log_level.argtypes = [ctypes.c_int]
726
global_set_log_level.restype = None
727
728
global_set_log_function = _library.gnutls_global_set_log_function
729
global_set_log_function.argtypes = [log_func]
730
global_set_log_function.restype = None
731
732
deinit = _library.gnutls_deinit
733
deinit.argtypes = [session_t]
734
deinit.restype = None
735
736
handshake = _library.gnutls_handshake
737
handshake.argtypes = [session_t]
738
handshake.restype = _error_code
739
handshake.errcheck = _retry_on_error
740
741
transport_set_ptr = _library.gnutls_transport_set_ptr
742
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
743
transport_set_ptr.restype = None
744
745
bye = _library.gnutls_bye
746
bye.argtypes = [session_t, close_request_t]
747
bye.restype = _error_code
748
bye.errcheck = _retry_on_error
749
750
check_version = _library.gnutls_check_version
751
check_version.argtypes = [ctypes.c_char_p]
752
check_version.restype = ctypes.c_char_p
753
754
_need_version = b"3.3.0"
755
if check_version(_need_version) is None:
756
raise self.Error("Needs GnuTLS {} or later"
757
.format(_need_version))
758
759
_tls_rawpk_version = b"3.6.6"
760
has_rawpk = bool(check_version(_tls_rawpk_version))
761
762
if has_rawpk:
763
# Types
764
class pubkey_st(ctypes.Structure):
765
_fields = []
766
pubkey_t = ctypes.POINTER(pubkey_st)
767
768
x509_crt_fmt_t = ctypes.c_int
769
770
# All the function declarations below are from gnutls/abstract.h
771
pubkey_init = _library.gnutls_pubkey_init
772
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
773
pubkey_init.restype = _error_code
774
775
pubkey_import = _library.gnutls_pubkey_import
776
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
777
x509_crt_fmt_t]
778
pubkey_import.restype = _error_code
779
780
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
781
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
782
ctypes.POINTER(ctypes.c_ubyte),
783
ctypes.POINTER(ctypes.c_size_t)]
784
pubkey_get_key_id.restype = _error_code
785
786
pubkey_deinit = _library.gnutls_pubkey_deinit
787
pubkey_deinit.argtypes = [pubkey_t]
788
pubkey_deinit.restype = None
789
else:
790
# All the function declarations below are from gnutls/openpgp.h
791
792
openpgp_crt_init = _library.gnutls_openpgp_crt_init
793
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
794
openpgp_crt_init.restype = _error_code
795
796
openpgp_crt_import = _library.gnutls_openpgp_crt_import
797
openpgp_crt_import.argtypes = [openpgp_crt_t,
798
ctypes.POINTER(datum_t),
799
openpgp_crt_fmt_t]
800
openpgp_crt_import.restype = _error_code
801
802
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
803
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
804
ctypes.POINTER(ctypes.c_uint)]
805
openpgp_crt_verify_self.restype = _error_code
806
807
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
808
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
809
openpgp_crt_deinit.restype = None
810
811
openpgp_crt_get_fingerprint = (
812
_library.gnutls_openpgp_crt_get_fingerprint)
813
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
814
ctypes.c_void_p,
815
ctypes.POINTER(
816
ctypes.c_size_t)]
817
openpgp_crt_get_fingerprint.restype = _error_code
818
819
if check_version(b"3.6.4"):
820
certificate_type_get2 = _library.gnutls_certificate_type_get2
821
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
822
certificate_type_get2.restype = _error_code
823
824
# Remove non-public functions
825
del _error_code, _retry_on_error
826
827
828
def call_pipe(connection, # : multiprocessing.Connection
829
func, *args, **kwargs):
830
"""This function is meant to be called by multiprocessing.Process
831
832
This function runs func(*args, **kwargs), and writes the resulting
833
return value on the provided multiprocessing.Connection.
834
"""
835
connection.send(func(*args, **kwargs))
836
connection.close()
837
838
839
class Client:
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
class Client(object):
840
276
"""A representation of a client host served by this server.
841
277
842
278
Attributes:
843
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
844
280
approval_delay: datetime.timedelta(); Time to wait for approval
845
281
approval_duration: datetime.timedelta(); Duration of one approval
846
checker: multiprocessing.Process(); a running checker process used
847
to see if the client lives. 'None' if no process is
848
running.
849
checker_callback_tag: a GLib event source tag, or None
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
850
286
checker_command: string; External command which is run to check
851
287
if client lives. %() expansions are done at
852
288
runtime with vars(self) as dict, so that for
853
289
instance %(name)s can be used in the command.
854
checker_initiator_tag: a GLib event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
855
291
created: datetime.datetime(); (UTC) object creation
856
client_structure: Object describing what attributes a client has
857
and is used for storing the client at exit
858
292
current_checker_command: string; current running checker_command
859
disable_initiator_tag: a GLib event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
860
295
enabled: bool()
861
296
fingerprint: string (40 or 32 hexadecimal digits); used to
862
uniquely identify an OpenPGP client
863
key_id: string (64 hexadecimal digits); used to uniquely identify
864
a client using raw public keys
297
uniquely identify the client
865
298
host: string; available for use by the checker command
866
299
interval: datetime.timedelta(); How often to start a new checker
867
300
last_approval_request: datetime.datetime(); (UTC) or None
868
301
last_checked_ok: datetime.datetime(); (UTC) or None
869
last_checker_status: integer between 0 and 255 reflecting exit
870
status of last checker. -1 reflects crashed
871
checker, -2 means no checker completed yet.
872
last_checker_signal: The signal which killed the last checker, if
873
last_checker_status is -1
874
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
875
303
name: string; from the config file, used in log messages and
876
304
D-Bus identifiers
877
305
secret: bytestring; sent verbatim (over TLS) to client
878
306
timeout: datetime.timedelta(); How long from last_checked_ok
879
307
until this client is disabled
880
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
881
309
runtime_expansions: Allowed attributes for runtime expansion.
882
310
expires: datetime.datetime(); time (UTC) when a client will be
883
311
disabled, or None
884
server_settings: The server_settings dict from main()
885
312
"""
886
313
887
314
runtime_expansions = ("approval_delay", "approval_duration",
888
"created", "enabled", "expires", "key_id",
889
"fingerprint", "host", "interval",
890
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
891
317
"last_enabled", "name", "timeout")
892
client_defaults = {
893
"timeout": "PT5M",
894
"extended_timeout": "PT15M",
895
"interval": "PT2M",
896
"checker": "fping -q -- %%(host)s",
897
"host": "",
898
"approval_delay": "PT0S",
899
"approval_duration": "PT1S",
900
"approved_by_default": "True",
901
"enabled": "True",
902
}
903
904
@staticmethod
905
def config_parser(config):
906
"""Construct a new dict of client settings of this form:
907
{ client_name: {setting_name: value, ...}, ...}
908
with exceptions for any special settings as defined above.
909
NOTE: Must be a pure function. Must return the same result
910
value given the same arguments.
911
"""
912
settings = {}
913
for client_name in config.sections():
914
section = dict(config.items(client_name))
915
client = settings[client_name] = {}
916
917
client["host"] = section["host"]
918
# Reformat values from string types to Python types
919
client["approved_by_default"] = config.getboolean(
920
client_name, "approved_by_default")
921
client["enabled"] = config.getboolean(client_name,
922
"enabled")
923
924
# Uppercase and remove spaces from key_id and fingerprint
925
# for later comparison purposes with return value from the
926
# key_id() and fingerprint() functions
927
client["key_id"] = (section.get("key_id", "").upper()
928
.replace(" ", ""))
929
client["fingerprint"] = (section["fingerprint"].upper()
930
.replace(" ", ""))
931
if "secret" in section:
932
client["secret"] = codecs.decode(section["secret"]
933
.encode("utf-8"),
934
"base64")
935
elif "secfile" in section:
936
with open(os.path.expanduser(os.path.expandvars
937
(section["secfile"])),
938
"rb") as secfile:
939
client["secret"] = secfile.read()
940
else:
941
raise TypeError("No secret or secfile for section {}"
942
.format(section))
943
client["timeout"] = string_to_delta(section["timeout"])
944
client["extended_timeout"] = string_to_delta(
945
section["extended_timeout"])
946
client["interval"] = string_to_delta(section["interval"])
947
client["approval_delay"] = string_to_delta(
948
section["approval_delay"])
949
client["approval_duration"] = string_to_delta(
950
section["approval_duration"])
951
client["checker_command"] = section["checker"]
952
client["last_approval_request"] = None
953
client["last_checked_ok"] = None
954
client["last_checker_status"] = -2
955
956
return settings
957
958
def __init__(self, settings, name=None, server_settings=None):
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
959
338
self.name = name
960
if server_settings is None:
961
server_settings = {}
962
self.server_settings = server_settings
963
# adding all client settings
964
for setting, value in settings.items():
965
setattr(self, setting, value)
966
967
if self.enabled:
968
if not hasattr(self, "last_enabled"):
969
self.last_enabled = datetime.datetime.utcnow()
970
if not hasattr(self, "expires"):
971
self.expires = (datetime.datetime.utcnow()
972
+ self.timeout)
973
else:
974
self.last_enabled = None
975
self.expires = None
976
339
if config is None:
340
config = {}
977
341
logger.debug("Creating client %r", self.name)
978
logger.debug(" Key ID: %s", self.key_id)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
979
347
logger.debug(" Fingerprint: %s", self.fingerprint)
980
self.created = settings.get("created",
981
datetime.datetime.utcnow())
982
983
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
355
else:
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
984
369
self.checker = None
985
370
self.checker_initiator_tag = None
986
371
self.disable_initiator_tag = None
372
self.expires = None
987
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
988
375
self.current_checker_command = None
989
self.approved = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
990
380
self.approvals_pending = 0
991
self.changedstate = multiprocessing_manager.Condition(
992
multiprocessing_manager.Lock())
993
self.client_structure = [attr
994
for attr in self.__dict__.keys()
995
if not attr.startswith("_")]
996
self.client_structure.append("client_structure")
997
998
for name, t in inspect.getmembers(
999
type(self), lambda obj: isinstance(obj, property)):
1000
if not name.startswith("_"):
1001
self.client_structure.append(name)
1002
1003
# Send notice to process children that client state has changed
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
1004
389
def send_changedstate(self):
1005
with self.changedstate:
1006
self.changedstate.notify_all()
1007
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1008
394
def enable(self):
1009
395
"""Start this client's checker and timeout hooks"""
1010
396
if getattr(self, "enabled", False):
1011
397
# Already enabled
1012
398
return
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
1013
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
1014
410
self.enabled = True
1015
411
self.last_enabled = datetime.datetime.utcnow()
1016
self.init_checker()
1017
self.send_changedstate()
1018
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1019
415
def disable(self, quiet=True):
1020
416
"""Disable this client."""
1021
417
if not getattr(self, "enabled", False):
1022
418
return False
1023
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
1024
422
logger.info("Disabling client %s", self.name)
1025
if getattr(self, "disable_initiator_tag", None) is not None:
1026
GLib.source_remove(self.disable_initiator_tag)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1027
425
self.disable_initiator_tag = None
1028
426
self.expires = None
1029
if getattr(self, "checker_initiator_tag", None) is not None:
1030
GLib.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1031
429
self.checker_initiator_tag = None
1032
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
1033
433
self.enabled = False
1034
if not quiet:
1035
self.send_changedstate()
1036
# Do not run this again if called by a GLib.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
1037
435
return False
1038
436
1039
437
def __del__(self):
438
self.disable_hook = None
1040
439
self.disable()
1041
1042
def init_checker(self):
1043
# Schedule a new checker to be started an 'interval' from now,
1044
# and every interval from then on.
1045
if self.checker_initiator_tag is not None:
1046
GLib.source_remove(self.checker_initiator_tag)
1047
self.checker_initiator_tag = GLib.timeout_add(
1048
random.randrange(int(self.interval.total_seconds() * 1000
1049
+ 1)),
1050
self.start_checker)
1051
# Schedule a disable() when 'timeout' has passed
1052
if self.disable_initiator_tag is not None:
1053
GLib.source_remove(self.disable_initiator_tag)
1054
self.disable_initiator_tag = GLib.timeout_add(
1055
int(self.timeout.total_seconds() * 1000), self.disable)
1056
# Also start a new checker *right now*.
1057
self.start_checker()
1058
1059
def checker_callback(self, source, condition, connection,
1060
command):
440
441
def checker_callback(self, pid, condition, command):
1061
442
"""The checker has completed, so take appropriate actions."""
1062
# Read return code from connection (see call_pipe)
1063
returncode = connection.recv()
1064
connection.close()
1065
if self.checker is not None:
1066
self.checker.join()
1067
443
self.checker_callback_tag = None
1068
444
self.checker = None
1069
1070
if returncode >= 0:
1071
self.last_checker_status = returncode
1072
self.last_checker_signal = None
1073
if self.last_checker_status == 0:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
1074
448
logger.info("Checker for %(name)s succeeded",
1075
449
vars(self))
1076
450
self.checked_ok()
1077
451
else:
1078
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1079
454
else:
1080
self.last_checker_status = -1
1081
self.last_checker_signal = -returncode
1082
455
logger.warning("Checker for %(name)s crashed?",
1083
456
vars(self))
1084
return False
1085
1086
def checked_ok(self):
1087
"""Assert that the client has been seen, alive and well."""
1088
self.last_checked_ok = datetime.datetime.utcnow()
1089
self.last_checker_status = 0
1090
self.last_checker_signal = None
1091
self.bump_timeout()
1092
1093
def bump_timeout(self, timeout=None):
1094
"""Bump up the timeout for this client."""
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
1095
464
if timeout is None:
1096
465
timeout = self.timeout
1097
if self.disable_initiator_tag is not None:
1098
GLib.source_remove(self.disable_initiator_tag)
1099
self.disable_initiator_tag = None
1100
if getattr(self, "enabled", False):
1101
self.disable_initiator_tag = GLib.timeout_add(
1102
int(timeout.total_seconds() * 1000), self.disable)
1103
self.expires = datetime.datetime.utcnow() + timeout
1104
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
472
1105
473
def need_approval(self):
1106
474
self.last_approval_request = datetime.datetime.utcnow()
1107
475
1108
476
def start_checker(self):
1109
477
"""Start a new checker subprocess if one is not running.
1110
478
1111
479
If a checker already exists, leave it running and do
1112
480
nothing."""
1113
481
# The reason for not killing a running checker is that if we
1114
# did that, and if a checker (for some reason) started running
1115
# slowly and taking more than 'interval' time, then the client
1116
# would inevitably timeout, since no checker would get a
1117
# chance to run to completion. If we instead leave running
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1118
486
# checkers alone, the checker would have to take more time
1119
487
# than 'timeout' for the client to be disabled, which is as it
1120
488
# should be.
1121
1122
if self.checker is not None and not self.checker.is_alive():
1123
logger.warning("Checker was not alive; joining")
1124
self.checker.join()
1125
self.checker = None
489
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1126
503
# Start a new checker if needed
1127
504
if self.checker is None:
1128
# Escape attributes for the shell
1129
escaped_attrs = {
1130
attr: re.escape(str(getattr(self, attr)))
1131
for attr in self.runtime_expansions}
1132
505
try:
1133
command = self.checker_command % escaped_attrs
1134
except TypeError as error:
1135
logger.error('Could not format string "%s"',
1136
self.checker_command,
1137
exc_info=error)
1138
return True # Try again later
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
508
except TypeError:
509
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
518
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1139
524
self.current_checker_command = command
1140
logger.info("Starting checker %r for %s", command,
1141
self.name)
1142
# We don't need to redirect stdout and stderr, since
1143
# in normal mode, that is already done by daemon(),
1144
# and in debug mode we don't want to. (Stdin is
1145
# always replaced by /dev/null.)
1146
# The exception is when not debugging but nevertheless
1147
# running in the foreground; use the previously
1148
# created wnull.
1149
popen_args = {"close_fds": True,
1150
"shell": True,
1151
"cwd": "/"}
1152
if (not self.server_settings["debug"]
1153
and self.server_settings["foreground"]):
1154
popen_args.update({"stdout": wnull,
1155
"stderr": wnull})
1156
pipe = multiprocessing.Pipe(duplex=False)
1157
self.checker = multiprocessing.Process(
1158
target=call_pipe,
1159
args=(pipe[1], subprocess.call, command),
1160
kwargs=popen_args)
1161
self.checker.start()
1162
self.checker_callback_tag = GLib.io_add_watch(
1163
GLib.IOChannel.unix_new(pipe[0].fileno()),
1164
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1165
self.checker_callback, pipe[0], command)
1166
# Re-run this periodically if run by GLib.timeout_add
525
try:
526
logger.info("Starting checker %r for %s",
527
command, self.name)
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
533
close_fds=True,
534
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
547
error)
548
# Re-run this periodically if run by gobject.timeout_add
1167
549
return True
1168
550
1169
551
def stop_checker(self):
1170
552
"""Force the checker process, if any, to stop."""
1171
553
if self.checker_callback_tag:
1172
GLib.source_remove(self.checker_callback_tag)
554
gobject.source_remove(self.checker_callback_tag)
1173
555
self.checker_callback_tag = None
1174
556
if getattr(self, "checker", None) is None:
1175
557
return
1176
558
logger.debug("Stopping checker for %(name)s", vars(self))
1177
self.checker.terminate()
559
try:
560
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
566
raise
1178
567
self.checker = None
1179
568
1180
569
1181
def dbus_service_property(dbus_interface,
1182
signature="v",
1183
access="readwrite",
1184
byte_arrays=False):
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1185
572
"""Decorators for marking methods of a DBusObjectWithProperties to
1186
573
become properties on the D-Bus.
1187
574
1188
575
The decorated method will be called with no arguments by "Get"
1189
576
and with one argument by "Set".
1190
577
1191
578
The parameters, where they are supported, are the same as
1192
579
dbus.service.method, except there is only "signature", since the
1193
580
type from Get() and the type sent to Set() is the same.
1196
583
# "Set" method, so we fail early here:
1197
584
if byte_arrays and signature != "ay":
1198
585
raise ValueError("Byte arrays not supported for non-'ay'"
1199
" signature {!r}".format(signature))
1200
586
" signature %r" % signature)
1201
587
def decorator(func):
1202
588
func._dbus_is_property = True
1203
589
func._dbus_interface = dbus_interface
1206
592
func._dbus_name = func.__name__
1207
593
if func._dbus_name.endswith("_dbus_property"):
1208
594
func._dbus_name = func._dbus_name[:-14]
1209
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1210
return func
1211
1212
return decorator
1213
1214
1215
def dbus_interface_annotations(dbus_interface):
1216
"""Decorator for marking functions returning interface annotations
1217
1218
Usage:
1219
1220
@dbus_interface_annotations("org.example.Interface")
1221
def _foo(self): # Function name does not matter
1222
return {"org.freedesktop.DBus.Deprecated": "true",
1223
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1224
"false"}
1225
"""
1226
1227
def decorator(func):
1228
func._dbus_is_interface = True
1229
func._dbus_interface = dbus_interface
1230
func._dbus_name = dbus_interface
1231
return func
1232
1233
return decorator
1234
1235
1236
def dbus_annotations(annotations):
1237
"""Decorator to annotate D-Bus methods, signals or properties
1238
Usage:
1239
1240
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1241
"org.freedesktop.DBus.Property."
1242
"EmitsChangedSignal": "false"})
1243
@dbus_service_property("org.example.Interface", signature="b",
1244
access="r")
1245
def Property_dbus_property(self):
1246
return dbus.Boolean(False)
1247
1248
See also the DBusObjectWithAnnotations class.
1249
"""
1250
1251
def decorator(func):
1252
func._dbus_annotations = annotations
1253
return func
1254
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
1255
597
return decorator
1256
598
1257
599
1258
600
class DBusPropertyException(dbus.exceptions.DBusException):
1259
601
"""A base class for D-Bus property-related exceptions
1260
602
"""
1261
pass
603
def __unicode__(self):
604
return unicode(str(self))
1262
605
1263
606
1264
607
class DBusPropertyAccessException(DBusPropertyException):
1273
616
pass
1274
617
1275
618
1276
class DBusObjectWithAnnotations(dbus.service.Object):
1277
"""A D-Bus object with annotations.
1278
1279
Classes inheriting from this can use the dbus_annotations
1280
decorator to add annotations to methods or signals.
1281
"""
1282
1283
@staticmethod
1284
def _is_dbus_thing(thing):
1285
"""Returns a function testing if an attribute is a D-Bus thing
1286
1287
If called like _is_dbus_thing("method") it returns a function
1288
suitable for use as predicate to inspect.getmembers().
1289
"""
1290
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1291
False)
1292
1293
def _get_all_dbus_things(self, thing):
1294
"""Returns a generator of (name, attribute) pairs
1295
"""
1296
return ((getattr(athing.__get__(self), "_dbus_name", name),
1297
athing.__get__(self))
1298
for cls in self.__class__.__mro__
1299
for name, athing in
1300
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1301
1302
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1303
out_signature="s",
1304
path_keyword='object_path',
1305
connection_keyword='connection')
1306
def Introspect(self, object_path, connection):
1307
"""Overloading of standard D-Bus method.
1308
1309
Inserts annotation tags on methods and signals.
1310
"""
1311
xmlstring = dbus.service.Object.Introspect(self, object_path,
1312
connection)
1313
try:
1314
document = xml.dom.minidom.parseString(xmlstring)
1315
1316
for if_tag in document.getElementsByTagName("interface"):
1317
# Add annotation tags
1318
for typ in ("method", "signal"):
1319
for tag in if_tag.getElementsByTagName(typ):
1320
annots = dict()
1321
for name, prop in (self.
1322
_get_all_dbus_things(typ)):
1323
if (name == tag.getAttribute("name")
1324
and prop._dbus_interface
1325
== if_tag.getAttribute("name")):
1326
annots.update(getattr(
1327
prop, "_dbus_annotations", {}))
1328
for name, value in annots.items():
1329
ann_tag = document.createElement(
1330
"annotation")
1331
ann_tag.setAttribute("name", name)
1332
ann_tag.setAttribute("value", value)
1333
tag.appendChild(ann_tag)
1334
# Add interface annotation tags
1335
for annotation, value in dict(
1336
itertools.chain.from_iterable(
1337
annotations().items()
1338
for name, annotations
1339
in self._get_all_dbus_things("interface")
1340
if name == if_tag.getAttribute("name")
1341
)).items():
1342
ann_tag = document.createElement("annotation")
1343
ann_tag.setAttribute("name", annotation)
1344
ann_tag.setAttribute("value", value)
1345
if_tag.appendChild(ann_tag)
1346
# Fix argument name for the Introspect method itself
1347
if (if_tag.getAttribute("name")
1348
== dbus.INTROSPECTABLE_IFACE):
1349
for cn in if_tag.getElementsByTagName("method"):
1350
if cn.getAttribute("name") == "Introspect":
1351
for arg in cn.getElementsByTagName("arg"):
1352
if (arg.getAttribute("direction")
1353
== "out"):
1354
arg.setAttribute("name",
1355
"xml_data")
1356
xmlstring = document.toxml("utf-8")
1357
document.unlink()
1358
except (AttributeError, xml.dom.DOMException,
1359
xml.parsers.expat.ExpatError) as error:
1360
logger.error("Failed to override Introspection method",
1361
exc_info=error)
1362
return xmlstring
1363
1364
1365
class DBusObjectWithProperties(DBusObjectWithAnnotations):
619
class DBusObjectWithProperties(dbus.service.Object):
1366
620
"""A D-Bus object with properties.
1367
621
1368
622
Classes inheriting from this can use the dbus_service_property
1369
623
decorator to expose methods as D-Bus properties. It exposes the
1370
624
standard Get(), Set(), and GetAll() methods on the D-Bus.
1371
625
"""
1372
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
1373
639
def _get_dbus_property(self, interface_name, property_name):
1374
640
"""Returns a bound method if one exists which is a D-Bus
1375
641
property with the specified name and interface.
1376
642
"""
1377
for cls in self.__class__.__mro__:
1378
for name, value in inspect.getmembers(
1379
cls, self._is_dbus_thing("property")):
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
1380
646
if (value._dbus_name == property_name
1381
647
and value._dbus_interface == interface_name):
1382
648
return value.__get__(self)
1383
649
1384
650
# No such property
1385
raise DBusPropertyNotFound("{}:{}.{}".format(
1386
self.dbus_object_path, interface_name, property_name))
1387
1388
@classmethod
1389
def _get_all_interface_names(cls):
1390
"""Get a sequence of all interfaces supported by an object"""
1391
return (name for name in set(getattr(getattr(x, attr),
1392
"_dbus_interface", None)
1393
for x in (inspect.getmro(cls))
1394
for attr in dir(x))
1395
if name is not None)
1396
1397
@dbus.service.method(dbus.PROPERTIES_IFACE,
1398
in_signature="ss",
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1399
656
out_signature="v")
1400
657
def Get(self, interface_name, property_name):
1401
658
"""Standard D-Bus property Get() method, see D-Bus standard.
1407
664
if not hasattr(value, "variant_level"):
1408
665
return value
1409
666
return type(value)(value, variant_level=value.variant_level+1)
1410
667
1411
668
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1412
669
def Set(self, interface_name, property_name, value):
1413
670
"""Standard D-Bus property Set() method, see D-Bus standard.
1419
676
# The byte_arrays option is not supported yet on
1420
677
# signatures other than "ay".
1421
678
if prop._dbus_signature != "ay":
1422
raise ValueError("Byte arrays not supported for non-"
1423
"'ay' signature {!r}"
1424
.format(prop._dbus_signature))
1425
value = dbus.ByteArray(bytes(value))
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
1426
682
prop(value)
1427
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
1429
in_signature="s",
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1430
685
out_signature="a{sv}")
1431
686
def GetAll(self, interface_name):
1432
687
"""Standard D-Bus property GetAll() method, see D-Bus
1433
688
standard.
1434
689
1435
690
Note: Will not include properties with access="write".
1436
691
"""
1437
properties = {}
1438
for name, prop in self._get_all_dbus_things("property"):
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
1439
694
if (interface_name
1440
695
and interface_name != prop._dbus_interface):
1441
696
# Interface non-empty but did not match
1445
700
continue
1446
701
value = prop()
1447
702
if not hasattr(value, "variant_level"):
1448
properties[name] = value
703
all[name] = value
1449
704
continue
1450
properties[name] = type(value)(
1451
value, variant_level=value.variant_level + 1)
1452
return dbus.Dictionary(properties, signature="sv")
1453
1454
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1455
def PropertiesChanged(self, interface_name, changed_properties,
1456
invalidated_properties):
1457
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1458
standard.
1459
"""
1460
pass
1461
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
1462
709
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
710
out_signature="s",
1464
711
path_keyword='object_path',
1465
712
connection_keyword='connection')
1466
713
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Inserts property tags and interface annotation tags.
714
"""Standard D-Bus method, overloaded to insert property tags.
1470
715
"""
1471
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1472
object_path,
1473
connection)
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
1474
718
try:
1475
719
document = xml.dom.minidom.parseString(xmlstring)
1476
1477
720
def make_tag(document, name, prop):
1478
721
e = document.createElement("property")
1479
722
e.setAttribute("name", name)
1480
723
e.setAttribute("type", prop._dbus_signature)
1481
724
e.setAttribute("access", prop._dbus_access)
1482
725
return e
1483
1484
726
for if_tag in document.getElementsByTagName("interface"):
1485
# Add property tags
1486
727
for tag in (make_tag(document, name, prop)
1487
728
for name, prop
1488
in self._get_all_dbus_things("property")
729
in self._get_all_dbus_properties()
1489
730
if prop._dbus_interface
1490
731
== if_tag.getAttribute("name")):
1491
732
if_tag.appendChild(tag)
1492
# Add annotation tags for properties
1493
for tag in if_tag.getElementsByTagName("property"):
1494
annots = dict()
1495
for name, prop in self._get_all_dbus_things(
1496
"property"):
1497
if (name == tag.getAttribute("name")
1498
and prop._dbus_interface
1499
== if_tag.getAttribute("name")):
1500
annots.update(getattr(
1501
prop, "_dbus_annotations", {}))
1502
for name, value in annots.items():
1503
ann_tag = document.createElement(
1504
"annotation")
1505
ann_tag.setAttribute("name", name)
1506
ann_tag.setAttribute("value", value)
1507
tag.appendChild(ann_tag)
1508
733
# Add the names to the return values for the
1509
734
# "org.freedesktop.DBus.Properties" methods
1510
735
if (if_tag.getAttribute("name")
1525
750
except (AttributeError, xml.dom.DOMException,
1526
751
xml.parsers.expat.ExpatError) as error:
1527
752
logger.error("Failed to override Introspection method",
1528
exc_info=error)
1529
return xmlstring
1530
1531
1532
try:
1533
dbus.OBJECT_MANAGER_IFACE
1534
except AttributeError:
1535
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1536
1537
1538
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1539
"""A D-Bus object with an ObjectManager.
1540
1541
Classes inheriting from this exposes the standard
1542
GetManagedObjects call and the InterfacesAdded and
1543
InterfacesRemoved signals on the standard
1544
"org.freedesktop.DBus.ObjectManager" interface.
1545
1546
Note: No signals are sent automatically; they must be sent
1547
manually.
1548
"""
1549
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1550
out_signature="a{oa{sa{sv}}}")
1551
def GetManagedObjects(self):
1552
"""This function must be overridden"""
1553
raise NotImplementedError()
1554
1555
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1556
signature="oa{sa{sv}}")
1557
def InterfacesAdded(self, object_path, interfaces_and_properties):
1558
pass
1559
1560
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1561
def InterfacesRemoved(self, object_path, interfaces):
1562
pass
1563
1564
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1565
out_signature="s",
1566
path_keyword='object_path',
1567
connection_keyword='connection')
1568
def Introspect(self, object_path, connection):
1569
"""Overloading of standard D-Bus method.
1570
1571
Override return argument name of GetManagedObjects to be
1572
"objpath_interfaces_and_properties"
1573
"""
1574
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1575
object_path,
1576
connection)
1577
try:
1578
document = xml.dom.minidom.parseString(xmlstring)
1579
1580
for if_tag in document.getElementsByTagName("interface"):
1581
# Fix argument name for the GetManagedObjects method
1582
if (if_tag.getAttribute("name")
1583
== dbus.OBJECT_MANAGER_IFACE):
1584
for cn in if_tag.getElementsByTagName("method"):
1585
if (cn.getAttribute("name")
1586
== "GetManagedObjects"):
1587
for arg in cn.getElementsByTagName("arg"):
1588
if (arg.getAttribute("direction")
1589
== "out"):
1590
arg.setAttribute(
1591
"name",
1592
"objpath_interfaces"
1593
"_and_properties")
1594
xmlstring = document.toxml("utf-8")
1595
document.unlink()
1596
except (AttributeError, xml.dom.DOMException,
1597
xml.parsers.expat.ExpatError) as error:
1598
logger.error("Failed to override Introspection method",
1599
exc_info=error)
1600
return xmlstring
1601
1602
1603
def datetime_to_dbus(dt, variant_level=0):
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
1604
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1605
759
if dt is None:
1606
return dbus.String("", variant_level=variant_level)
1607
return dbus.String(dt.isoformat(), variant_level=variant_level)
1608
1609
1610
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1611
"""A class decorator; applied to a subclass of
1612
dbus.service.Object, it will add alternate D-Bus attributes with
1613
interface names according to the "alt_interface_names" mapping.
1614
Usage:
1615
1616
@alternate_dbus_interfaces({"org.example.Interface":
1617
"net.example.AlternateInterface"})
1618
class SampleDBusObject(dbus.service.Object):
1619
@dbus.service.method("org.example.Interface")
1620
def SampleDBusMethod():
1621
pass
1622
1623
The above "SampleDBusMethod" on "SampleDBusObject" will be
1624
reachable via two interfaces: "org.example.Interface" and
1625
"net.example.AlternateInterface", the latter of which will have
1626
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1627
"true", unless "deprecate" is passed with a False value.
1628
1629
This works for methods and signals, and also for D-Bus properties
1630
(from DBusObjectWithProperties) and interfaces (from the
1631
dbus_interface_annotations decorator).
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1632
768
"""
1633
1634
def wrapper(cls):
1635
for orig_interface_name, alt_interface_name in (
1636
alt_interface_names.items()):
1637
attr = {}
1638
interface_names = set()
1639
# Go though all attributes of the class
1640
for attrname, attribute in inspect.getmembers(cls):
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1641
776
# Ignore non-D-Bus attributes, and D-Bus attributes
1642
777
# with the wrong interface name
1643
778
if (not hasattr(attribute, "_dbus_interface")
1644
or not attribute._dbus_interface.startswith(
1645
orig_interface_name)):
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1646
781
continue
1647
782
# Create an alternate D-Bus interface name based on
1648
783
# the current name
1649
alt_interface = attribute._dbus_interface.replace(
1650
orig_interface_name, alt_interface_name)
1651
interface_names.add(alt_interface)
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1652
787
# Is this a D-Bus signal?
1653
788
if getattr(attribute, "_dbus_is_signal", False):
1654
# Extract the original non-method undecorated
1655
# function by black magic
1656
if sys.version_info.major == 2:
1657
nonmethod_func = (dict(
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
1658
792
zip(attribute.func_code.co_freevars,
1659
attribute.__closure__))
1660
["func"].cell_contents)
1661
else:
1662
nonmethod_func = (dict(
1663
zip(attribute.__code__.co_freevars,
1664
attribute.__closure__))
1665
["func"].cell_contents)
793
attribute.__closure__))["func"]
794
.cell_contents)
1666
795
# Create a new, but exactly alike, function
1667
796
# object, and decorate it to be a new D-Bus signal
1668
797
# with the alternate D-Bus interface name
1669
new_function = copy_function(nonmethod_func)
1670
new_function = (dbus.service.signal(
1671
alt_interface,
1672
attribute._dbus_signature)(new_function))
1673
# Copy annotations, if any
1674
try:
1675
new_function._dbus_annotations = dict(
1676
attribute._dbus_annotations)
1677
except AttributeError:
1678
pass
1679
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1680
807
# Define a creator of a function to call both the
1681
# original and alternate functions, so both the
1682
# original and alternate signals gets sent when
1683
# the function is called
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1684
810
def fixscope(func1, func2):
1685
811
"""This function is a scope container to pass
1686
812
func1 and func2 to the "call_both" function
1687
813
outside of its arguments"""
1688
1689
@functools.wraps(func2)
1690
814
def call_both(*args, **kwargs):
1691
815
"""This function will emit two D-Bus
1692
816
signals by calling func1 and func2"""
1693
817
func1(*args, **kwargs)
1694
818
func2(*args, **kwargs)
1695
# Make wrapper function look like a D-Bus
1696
# signal
1697
for name, attr in inspect.getmembers(func2):
1698
if name.startswith("_dbus_"):
1699
setattr(call_both, name, attr)
1700
1701
819
return call_both
1702
820
# Create the "call_both" function and add it to
1703
821
# the class
1704
attr[attrname] = fixscope(attribute, new_function)
822
attr[attrname] = fixscope(attribute,
823
new_function)
1705
824
# Is this a D-Bus method?
1706
825
elif getattr(attribute, "_dbus_is_method", False):
1707
826
# Create a new, but exactly alike, function
1708
827
# object. Decorate it to be a new D-Bus method
1709
828
# with the alternate D-Bus interface name. Add it
1710
829
# to the class.
1711
attr[attrname] = (
1712
dbus.service.method(
1713
alt_interface,
1714
attribute._dbus_in_signature,
1715
attribute._dbus_out_signature)
1716
(copy_function(attribute)))
1717
# Copy annotations, if any
1718
try:
1719
attr[attrname]._dbus_annotations = dict(
1720
attribute._dbus_annotations)
1721
except AttributeError:
1722
pass
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
1723
840
# Is this a D-Bus property?
1724
841
elif getattr(attribute, "_dbus_is_property", False):
1725
842
# Create a new, but exactly alike, function
1726
843
# object, and decorate it to be a new D-Bus
1727
844
# property with the alternate D-Bus interface
1728
845
# name. Add it to the class.
1729
attr[attrname] = (dbus_service_property(
1730
alt_interface, attribute._dbus_signature,
1731
attribute._dbus_access,
1732
attribute._dbus_get_args_options
1733
["byte_arrays"])
1734
(copy_function(attribute)))
1735
# Copy annotations, if any
1736
try:
1737
attr[attrname]._dbus_annotations = dict(
1738
attribute._dbus_annotations)
1739
except AttributeError:
1740
pass
1741
# Is this a D-Bus interface?
1742
elif getattr(attribute, "_dbus_is_interface", False):
1743
# Create a new, but exactly alike, function
1744
# object. Decorate it to be a new D-Bus interface
1745
# with the alternate D-Bus interface name. Add it
1746
# to the class.
1747
attr[attrname] = (
1748
dbus_interface_annotations(alt_interface)
1749
(copy_function(attribute)))
1750
if deprecate:
1751
# Deprecate all alternate interfaces
1752
iname = "_AlternateDBusNames_interface_annotation{}"
1753
for interface_name in interface_names:
1754
1755
@dbus_interface_annotations(interface_name)
1756
def func(self):
1757
return {"org.freedesktop.DBus.Deprecated":
1758
"true"}
1759
# Find an unused name
1760
for aname in (iname.format(i)
1761
for i in itertools.count()):
1762
if aname not in attr:
1763
attr[aname] = func
1764
break
1765
if interface_names:
1766
# Replace the class with a new subclass of it with
1767
# methods, signals, etc. as created above.
1768
if sys.version_info.major == 2:
1769
cls = type(b"{}Alternate".format(cls.__name__),
1770
(cls, ), attr)
1771
else:
1772
cls = type("{}Alternate".format(cls.__name__),
1773
(cls, ), attr)
1774
return cls
1775
1776
return wrapper
1777
1778
1779
@alternate_dbus_interfaces({"se.recompile.Mandos":
1780
"se.bsnet.fukt.Mandos"})
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
1781
861
class ClientDBus(Client, DBusObjectWithProperties):
1782
862
"""A Client class using D-Bus
1783
863
1784
864
Attributes:
1785
865
dbus_object_path: dbus.ObjectPath
1786
866
bus: dbus.SystemBus()
1787
867
"""
1788
868
1789
869
runtime_expansions = (Client.runtime_expansions
1790
+ ("dbus_object_path", ))
1791
1792
_interface = "se.recompile.Mandos.Client"
1793
870
+ ("dbus_object_path",))
871
1794
872
# dbus.service.Object doesn't use super(), so we can't either.
1795
1796
def __init__(self, bus=None, *args, **kwargs):
873
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1797
876
self.bus = bus
1798
877
Client.__init__(self, *args, **kwargs)
1799
878
# Only now, when this client is initialized, can it show up on
1800
879
# the D-Bus
1801
client_object_name = str(self.name).translate(
880
client_object_name = unicode(self.name).translate(
1802
881
{ord("."): ord("_"),
1803
882
ord("-"): ord("_")})
1804
self.dbus_object_path = dbus.ObjectPath(
1805
"/clients/" + client_object_name)
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1806
885
DBusObjectWithProperties.__init__(self, self.bus,
1807
886
self.dbus_object_path)
1808
1809
def notifychangeproperty(transform_func, dbus_name,
1810
type_func=lambda x: x,
1811
variant_level=1,
1812
invalidate_only=False,
1813
_interface=_interface):
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
1814
891
""" Modify a variable so that it's a property which announces
1815
892
its changes to DBus.
1816
893
1817
transform_fun: Function that takes a value and a variant_level
1818
and transforms it to a D-Bus type.
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
1819
896
dbus_name: D-Bus name of the variable
1820
897
type_func: Function that transform the value before sending it
1821
898
to the D-Bus. Default: no transform
1822
899
variant_level: D-Bus variant level. Default: 1
1823
900
"""
1824
attrname = "_{}".format(dbus_name)
1825
901
attrname = "_{0}".format(dbus_name)
1826
902
def setter(self, value):
1827
903
if hasattr(self, "dbus_object_path"):
1828
904
if (not hasattr(self, attrname) or
1829
905
type_func(getattr(self, attrname, None))
1830
906
!= type_func(value)):
1831
if invalidate_only:
1832
self.PropertiesChanged(
1833
_interface, dbus.Dictionary(),
1834
dbus.Array((dbus_name, )))
1835
else:
1836
dbus_value = transform_func(
1837
type_func(value),
1838
variant_level=variant_level)
1839
self.PropertyChanged(dbus.String(dbus_name),
1840
dbus_value)
1841
self.PropertiesChanged(
1842
_interface,
1843
dbus.Dictionary({dbus.String(dbus_name):
1844
dbus_value}),
1845
dbus.Array())
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_value)
1846
911
setattr(self, attrname, value)
1847
912
1848
913
return property(lambda self: getattr(self, attrname), setter)
1849
914
915
1850
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1851
917
approvals_pending = notifychangeproperty(dbus.Boolean,
1852
918
"ApprovalPending",
1853
type_func=bool)
919
type_func = bool)
1854
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1855
921
last_enabled = notifychangeproperty(datetime_to_dbus,
1856
922
"LastEnabled")
1857
checker = notifychangeproperty(
1858
dbus.Boolean, "CheckerRunning",
1859
type_func=lambda checker: checker is not None)
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
1860
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1861
927
"LastCheckedOK")
1862
last_checker_status = notifychangeproperty(dbus.Int16,
1863
"LastCheckerStatus")
1864
928
last_approval_request = notifychangeproperty(
1865
929
datetime_to_dbus, "LastApprovalRequest")
1866
930
approved_by_default = notifychangeproperty(dbus.Boolean,
1867
931
"ApprovedByDefault")
1868
approval_delay = notifychangeproperty(
1869
dbus.UInt64, "ApprovalDelay",
1870
type_func=lambda td: td.total_seconds() * 1000)
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
1871
936
approval_duration = notifychangeproperty(
1872
dbus.UInt64, "ApprovalDuration",
1873
type_func=lambda td: td.total_seconds() * 1000)
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1874
939
host = notifychangeproperty(dbus.String, "Host")
1875
timeout = notifychangeproperty(
1876
dbus.UInt64, "Timeout",
1877
type_func=lambda td: td.total_seconds() * 1000)
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
1878
943
extended_timeout = notifychangeproperty(
1879
dbus.UInt64, "ExtendedTimeout",
1880
type_func=lambda td: td.total_seconds() * 1000)
1881
interval = notifychangeproperty(
1882
dbus.UInt64, "Interval",
1883
type_func=lambda td: td.total_seconds() * 1000)
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
1884
950
checker_command = notifychangeproperty(dbus.String, "Checker")
1885
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1886
invalidate_only=True)
1887
951
1888
952
del notifychangeproperty
1889
953
1890
954
def __del__(self, *args, **kwargs):
1891
955
try:
1892
956
self.remove_from_connection()
1895
959
if hasattr(DBusObjectWithProperties, "__del__"):
1896
960
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1897
961
Client.__del__(self, *args, **kwargs)
1898
1899
def checker_callback(self, source, condition,
1900
connection, command, *args, **kwargs):
1901
ret = Client.checker_callback(self, source, condition,
1902
connection, command, *args,
1903
**kwargs)
1904
exitstatus = self.last_checker_status
1905
if exitstatus >= 0:
962
963
def checker_callback(self, pid, condition, command,
964
*args, **kwargs):
965
self.checker_callback_tag = None
966
self.checker = None
967
if os.WIFEXITED(condition):
968
exitstatus = os.WEXITSTATUS(condition)
1906
969
# Emit D-Bus signal
1907
970
self.CheckerCompleted(dbus.Int16(exitstatus),
1908
# This is specific to GNU libC
1909
dbus.Int64(exitstatus << 8),
971
dbus.Int64(condition),
1910
972
dbus.String(command))
1911
973
else:
1912
974
# Emit D-Bus signal
1913
975
self.CheckerCompleted(dbus.Int16(-1),
1914
dbus.Int64(
1915
# This is specific to GNU libC
1916
(exitstatus << 8)
1917
| self.last_checker_signal),
976
dbus.Int64(condition),
1918
977
dbus.String(command))
1919
return ret
1920
978
979
return Client.checker_callback(self, pid, condition, command,
980
*args, **kwargs)
981
1921
982
def start_checker(self, *args, **kwargs):
1922
old_checker_pid = getattr(self.checker, "pid", None)
983
old_checker = self.checker
984
if self.checker is not None:
985
old_checker_pid = self.checker.pid
986
else:
987
old_checker_pid = None
1923
988
r = Client.start_checker(self, *args, **kwargs)
1924
989
# Only if new checker process was started
1925
990
if (self.checker is not None
1927
992
# Emit D-Bus signal
1928
993
self.CheckerStarted(self.current_checker_command)
1929
994
return r
1930
995
1931
996
def _reset_approved(self):
1932
self.approved = None
997
self._approved = None
1933
998
return False
1934
999
1935
1000
def approve(self, value=True):
1936
self.approved = value
1937
GLib.timeout_add(int(self.approval_duration.total_seconds()
1938
* 1000), self._reset_approved)
1939
1001
self.send_changedstate()
1940
1941
# D-Bus methods, signals & properties
1942
1943
# Interfaces
1944
1945
# Signals
1946
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1010
1011
## Signals
1012
1947
1013
# CheckerCompleted - signal
1948
1014
@dbus.service.signal(_interface, signature="nxs")
1949
1015
def CheckerCompleted(self, exitcode, waitstatus, command):
1950
1016
"D-Bus signal"
1951
1017
pass
1952
1018
1953
1019
# CheckerStarted - signal
1954
1020
@dbus.service.signal(_interface, signature="s")
1955
1021
def CheckerStarted(self, command):
1956
1022
"D-Bus signal"
1957
1023
pass
1958
1024
1959
1025
# PropertyChanged - signal
1960
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1961
1026
@dbus.service.signal(_interface, signature="sv")
1962
1027
def PropertyChanged(self, property, value):
1963
1028
"D-Bus signal"
1964
1029
pass
1965
1030
1966
1031
# GotSecret - signal
1967
1032
@dbus.service.signal(_interface)
1968
1033
def GotSecret(self):
1971
1036
server to mandos-client
1972
1037
"""
1973
1038
pass
1974
1039
1975
1040
# Rejected - signal
1976
1041
@dbus.service.signal(_interface, signature="s")
1977
1042
def Rejected(self, reason):
1978
1043
"D-Bus signal"
1979
1044
pass
1980
1045
1981
1046
# NeedApproval - signal
1982
1047
@dbus.service.signal(_interface, signature="tb")
1983
1048
def NeedApproval(self, timeout, default):
1984
1049
"D-Bus signal"
1985
1050
return self.need_approval()
1986
1987
# Methods
1988
1051
1052
## Methods
1053
1989
1054
# Approve - method
1990
1055
@dbus.service.method(_interface, in_signature="b")
1991
1056
def Approve(self, value):
1992
1057
self.approve(value)
1993
1058
1994
1059
# CheckedOK - method
1995
1060
@dbus.service.method(_interface)
1996
1061
def CheckedOK(self):
1997
1062
self.checked_ok()
1998
1063
1999
1064
# Enable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
1065
@dbus.service.method(_interface)
2002
1066
def Enable(self):
2003
1067
"D-Bus method"
2004
1068
self.enable()
2005
1069
2006
1070
# StartChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1071
@dbus.service.method(_interface)
2009
1072
def StartChecker(self):
2010
1073
"D-Bus method"
2011
1074
self.start_checker()
2012
1075
2013
1076
# Disable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1077
@dbus.service.method(_interface)
2016
1078
def Disable(self):
2017
1079
"D-Bus method"
2018
1080
self.disable()
2019
1081
2020
1082
# StopChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1083
@dbus.service.method(_interface)
2023
1084
def StopChecker(self):
2024
1085
self.stop_checker()
2025
2026
# Properties
2027
1086
1087
## Properties
1088
2028
1089
# ApprovalPending - property
2029
1090
@dbus_service_property(_interface, signature="b", access="read")
2030
1091
def ApprovalPending_dbus_property(self):
2031
1092
return dbus.Boolean(bool(self.approvals_pending))
2032
1093
2033
1094
# ApprovedByDefault - property
2034
@dbus_service_property(_interface,
2035
signature="b",
1095
@dbus_service_property(_interface, signature="b",
2036
1096
access="readwrite")
2037
1097
def ApprovedByDefault_dbus_property(self, value=None):
2038
1098
if value is None: # get
2039
1099
return dbus.Boolean(self.approved_by_default)
2040
1100
self.approved_by_default = bool(value)
2041
1101
2042
1102
# ApprovalDelay - property
2043
@dbus_service_property(_interface,
2044
signature="t",
1103
@dbus_service_property(_interface, signature="t",
2045
1104
access="readwrite")
2046
1105
def ApprovalDelay_dbus_property(self, value=None):
2047
1106
if value is None: # get
2048
return dbus.UInt64(self.approval_delay.total_seconds()
2049
* 1000)
1107
return dbus.UInt64(self.approval_delay_milliseconds())
2050
1108
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2051
1109
2052
1110
# ApprovalDuration - property
2053
@dbus_service_property(_interface,
2054
signature="t",
1111
@dbus_service_property(_interface, signature="t",
2055
1112
access="readwrite")
2056
1113
def ApprovalDuration_dbus_property(self, value=None):
2057
1114
if value is None: # get
2058
return dbus.UInt64(self.approval_duration.total_seconds()
2059
* 1000)
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
2060
1117
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2061
1118
2062
1119
# Name - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
1120
@dbus_service_property(_interface, signature="s", access="read")
2066
1121
def Name_dbus_property(self):
2067
1122
return dbus.String(self.name)
2068
2069
# KeyID - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2072
@dbus_service_property(_interface, signature="s", access="read")
2073
def KeyID_dbus_property(self):
2074
return dbus.String(self.key_id)
2075
1123
2076
1124
# Fingerprint - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
1125
@dbus_service_property(_interface, signature="s", access="read")
2080
1126
def Fingerprint_dbus_property(self):
2081
1127
return dbus.String(self.fingerprint)
2082
1128
2083
1129
# Host - property
2084
@dbus_service_property(_interface,
2085
signature="s",
1130
@dbus_service_property(_interface, signature="s",
2086
1131
access="readwrite")
2087
1132
def Host_dbus_property(self, value=None):
2088
1133
if value is None: # get
2089
1134
return dbus.String(self.host)
2090
self.host = str(value)
2091
1135
self.host = value
1136
2092
1137
# Created - property
2093
@dbus_annotations(
2094
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2095
1138
@dbus_service_property(_interface, signature="s", access="read")
2096
1139
def Created_dbus_property(self):
2097
return datetime_to_dbus(self.created)
2098
1140
return dbus.String(datetime_to_dbus(self.created))
1141
2099
1142
# LastEnabled - property
2100
1143
@dbus_service_property(_interface, signature="s", access="read")
2101
1144
def LastEnabled_dbus_property(self):
2102
1145
return datetime_to_dbus(self.last_enabled)
2103
1146
2104
1147
# Enabled - property
2105
@dbus_service_property(_interface,
2106
signature="b",
1148
@dbus_service_property(_interface, signature="b",
2107
1149
access="readwrite")
2108
1150
def Enabled_dbus_property(self, value=None):
2109
1151
if value is None: # get
2112
1154
self.enable()
2113
1155
else:
2114
1156
self.disable()
2115
1157
2116
1158
# LastCheckedOK - property
2117
@dbus_service_property(_interface,
2118
signature="s",
1159
@dbus_service_property(_interface, signature="s",
2119
1160
access="readwrite")
2120
1161
def LastCheckedOK_dbus_property(self, value=None):
2121
1162
if value is not None:
2122
1163
self.checked_ok()
2123
1164
return
2124
1165
return datetime_to_dbus(self.last_checked_ok)
2125
2126
# LastCheckerStatus - property
2127
@dbus_service_property(_interface, signature="n", access="read")
2128
def LastCheckerStatus_dbus_property(self):
2129
return dbus.Int16(self.last_checker_status)
2130
1166
2131
1167
# Expires - property
2132
1168
@dbus_service_property(_interface, signature="s", access="read")
2133
1169
def Expires_dbus_property(self):
2134
1170
return datetime_to_dbus(self.expires)
2135
1171
2136
1172
# LastApprovalRequest - property
2137
1173
@dbus_service_property(_interface, signature="s", access="read")
2138
1174
def LastApprovalRequest_dbus_property(self):
2139
1175
return datetime_to_dbus(self.last_approval_request)
2140
1176
2141
1177
# Timeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
1178
@dbus_service_property(_interface, signature="t",
2144
1179
access="readwrite")
2145
1180
def Timeout_dbus_property(self, value=None):
2146
1181
if value is None: # get
2147
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2148
old_timeout = self.timeout
1182
return dbus.UInt64(self.timeout_milliseconds())
2149
1183
self.timeout = datetime.timedelta(0, 0, 0, value)
2150
# Reschedule disabling
2151
if self.enabled:
2152
now = datetime.datetime.utcnow()
2153
self.expires += self.timeout - old_timeout
2154
if self.expires <= now:
2155
# The timeout has passed
2156
self.disable()
2157
else:
2158
if (getattr(self, "disable_initiator_tag", None)
2159
is None):
2160
return
2161
GLib.source_remove(self.disable_initiator_tag)
2162
self.disable_initiator_tag = GLib.timeout_add(
2163
int((self.expires - now).total_seconds() * 1000),
2164
self.disable)
2165
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
2166
1206
# ExtendedTimeout - property
2167
@dbus_service_property(_interface,
2168
signature="t",
1207
@dbus_service_property(_interface, signature="t",
2169
1208
access="readwrite")
2170
1209
def ExtendedTimeout_dbus_property(self, value=None):
2171
1210
if value is None: # get
2172
return dbus.UInt64(self.extended_timeout.total_seconds()
2173
* 1000)
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2174
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2175
1213
2176
1214
# Interval - property
2177
@dbus_service_property(_interface,
2178
signature="t",
1215
@dbus_service_property(_interface, signature="t",
2179
1216
access="readwrite")
2180
1217
def Interval_dbus_property(self, value=None):
2181
1218
if value is None: # get
2182
return dbus.UInt64(self.interval.total_seconds() * 1000)
1219
return dbus.UInt64(self.interval_milliseconds())
2183
1220
self.interval = datetime.timedelta(0, 0, 0, value)
2184
1221
if getattr(self, "checker_initiator_tag", None) is None:
2185
1222
return
2186
if self.enabled:
2187
# Reschedule checker run
2188
GLib.source_remove(self.checker_initiator_tag)
2189
self.checker_initiator_tag = GLib.timeout_add(
2190
value, self.start_checker)
2191
self.start_checker() # Start one now, too
2192
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
2193
1229
# Checker - property
2194
@dbus_service_property(_interface,
2195
signature="s",
1230
@dbus_service_property(_interface, signature="s",
2196
1231
access="readwrite")
2197
1232
def Checker_dbus_property(self, value=None):
2198
1233
if value is None: # get
2199
1234
return dbus.String(self.checker_command)
2200
self.checker_command = str(value)
2201
1235
self.checker_command = value
1236
2202
1237
# CheckerRunning - property
2203
@dbus_service_property(_interface,
2204
signature="b",
1238
@dbus_service_property(_interface, signature="b",
2205
1239
access="readwrite")
2206
1240
def CheckerRunning_dbus_property(self, value=None):
2207
1241
if value is None: # get
2210
1244
self.start_checker()
2211
1245
else:
2212
1246
self.stop_checker()
2213
1247
2214
1248
# ObjectPath - property
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2217
"org.freedesktop.DBus.Deprecated": "true"})
2218
1249
@dbus_service_property(_interface, signature="o", access="read")
2219
1250
def ObjectPath_dbus_property(self):
2220
return self.dbus_object_path # is already a dbus.ObjectPath
2221
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
2222
1253
# Secret = property
2223
@dbus_annotations(
2224
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2225
"invalidates"})
2226
@dbus_service_property(_interface,
2227
signature="ay",
2228
access="write",
2229
byte_arrays=True)
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
2230
1256
def Secret_dbus_property(self, value):
2231
self.secret = bytes(value)
2232
1257
self.secret = str(value)
1258
2233
1259
del _interface
2234
1260
2235
1261
2236
class ProxyClient:
2237
def __init__(self, child_pipe, key_id, fpr, address):
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
2238
1264
self._pipe = child_pipe
2239
self._pipe.send(('init', key_id, fpr, address))
1265
self._pipe.send(('init', fpr, address))
2240
1266
if not self._pipe.recv():
2241
raise KeyError(key_id or fpr)
2242
1267
raise KeyError()
1268
2243
1269
def __getattribute__(self, name):
2244
if name == '_pipe':
1270
if(name == '_pipe'):
2245
1271
return super(ProxyClient, self).__getattribute__(name)
2246
1272
self._pipe.send(('getattr', name))
2247
1273
data = self._pipe.recv()
2248
1274
if data[0] == 'data':
2249
1275
return data[1]
2250
1276
if data[0] == 'function':
2251
2252
1277
def func(*args, **kwargs):
2253
1278
self._pipe.send(('funcall', name, args, kwargs))
2254
1279
return self._pipe.recv()[1]
2255
2256
1280
return func
2257
1281
2258
1282
def __setattr__(self, name, value):
2259
if name == '_pipe':
1283
if(name == '_pipe'):
2260
1284
return super(ProxyClient, self).__setattr__(name, value)
2261
1285
self._pipe.send(('setattr', name, value))
2262
1286
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
2263
1289
2264
1290
class ClientHandler(socketserver.BaseRequestHandler, object):
2265
1291
"""A class to handle client connections.
2266
1292
2267
1293
Instantiated once for each connection to handle it.
2268
1294
Note: This will run in its own forked process."""
2269
1295
2270
1296
def handle(self):
2271
1297
with contextlib.closing(self.server.child_pipe) as child_pipe:
2272
1298
logger.info("TCP connection from: %s",
2273
str(self.client_address))
1299
unicode(self.client_address))
2274
1300
logger.debug("Pipe FD: %d",
2275
1301
self.server.child_pipe.fileno())
2276
2277
session = gnutls.ClientSession(self.request)
2278
2279
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2280
# "+AES-256-CBC", "+SHA1",
2281
# "+COMP-NULL", "+CTYPE-OPENPGP",
2282
# "+DHE-DSS"))
1302
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1312
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
2283
1317
# Use a fallback default, since this MUST be set.
2284
1318
priority = self.server.gnutls_priority
2285
1319
if priority is None:
2286
1320
priority = "NORMAL"
2287
gnutls.priority_set_direct(session._c_object,
2288
priority.encode("utf-8"),
2289
None)
2290
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
1324
2291
1325
# Start communication using the Mandos protocol
2292
1326
# Get protocol number
2293
1327
line = self.request.makefile().readline()
2294
1328
logger.debug("Protocol version: %r", line)
2295
1329
try:
2296
1330
if int(line.strip().split()[0]) > 1:
2297
raise RuntimeError(line)
1331
raise RuntimeError
2298
1332
except (ValueError, IndexError, RuntimeError) as error:
2299
1333
logger.error("Unknown protocol version: %s", error)
2300
1334
return
2301
1335
2302
1336
# Start GnuTLS connection
2303
1337
try:
2304
1338
session.handshake()
2305
except gnutls.Error as error:
1339
except gnutls.errors.GNUTLSError as error:
2306
1340
logger.warning("Handshake failed: %s", error)
2307
1341
# Do not run session.bye() here: the session is not
2308
1342
# established. Just abandon the request.
2309
1343
return
2310
1344
logger.debug("Handshake succeeded")
2311
1345
2312
1346
approval_required = False
2313
1347
try:
2314
if gnutls.has_rawpk:
2315
fpr = b""
2316
try:
2317
key_id = self.key_id(
2318
self.peer_certificate(session))
2319
except (TypeError, gnutls.Error) as error:
2320
logger.warning("Bad certificate: %s", error)
2321
return
2322
logger.debug("Key ID: %s", key_id)
2323
2324
else:
2325
key_id = b""
2326
try:
2327
fpr = self.fingerprint(
2328
self.peer_certificate(session))
2329
except (TypeError, gnutls.Error) as error:
2330
logger.warning("Bad certificate: %s", error)
2331
return
2332
logger.debug("Fingerprint: %s", fpr)
2333
2334
try:
2335
client = ProxyClient(child_pipe, key_id, fpr,
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
2336
1359
self.client_address)
2337
1360
except KeyError:
2338
1361
return
2339
1362
2340
1363
if client.approval_delay:
2341
1364
delay = client.approval_delay
2342
1365
client.approvals_pending += 1
2343
1366
approval_required = True
2344
1367
2345
1368
while True:
2346
1369
if not client.enabled:
2347
1370
logger.info("Client %s is disabled",
2348
client.name)
1371
client.name)
2349
1372
if self.server.use_dbus:
2350
1373
# Emit D-Bus signal
2351
1374
client.Rejected("Disabled")
2352
1375
return
2353
2354
if client.approved or not client.approval_delay:
2355
# We are approved or approval is disabled
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
2356
1379
break
2357
elif client.approved is None:
1380
elif client._approved is None:
2358
1381
logger.info("Client %s needs approval",
2359
1382
client.name)
2360
1383
if self.server.use_dbus:
2361
1384
# Emit D-Bus signal
2362
1385
client.NeedApproval(
2363
client.approval_delay.total_seconds()
2364
* 1000, client.approved_by_default)
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
2365
1388
else:
2366
1389
logger.warning("Client %s was not approved",
2367
1390
client.name)
2369
1392
# Emit D-Bus signal
2370
1393
client.Rejected("Denied")
2371
1394
return
2372
2373
# wait until timeout or approved
1395
1396
#wait until timeout or approved
2374
1397
time = datetime.datetime.now()
2375
1398
client.changedstate.acquire()
2376
client.changedstate.wait(delay.total_seconds())
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
2377
1402
client.changedstate.release()
2378
1403
time2 = datetime.datetime.now()
2379
1404
if (time2 - time) >= delay:
2389
1414
break
2390
1415
else:
2391
1416
delay -= time2 - time
2392
2393
try:
2394
session.send(client.secret)
2395
except gnutls.Error as error:
2396
logger.warning("gnutls send failed",
2397
exc_info=error)
2398
return
2399
1417
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
1429
2400
1430
logger.info("Sending secret to %s", client.name)
2401
# bump the timeout using extended_timeout
2402
client.bump_timeout(client.extended_timeout)
1431
# bump the timeout as if seen
1432
client.checked_ok(client.extended_timeout)
2403
1433
if self.server.use_dbus:
2404
1434
# Emit D-Bus signal
2405
1435
client.GotSecret()
2406
1436
2407
1437
finally:
2408
1438
if approval_required:
2409
1439
client.approvals_pending -= 1
2410
1440
try:
2411
1441
session.bye()
2412
except gnutls.Error as error:
2413
logger.warning("GnuTLS bye failed",
2414
exc_info=error)
2415
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
1444
2416
1445
@staticmethod
2417
1446
def peer_certificate(session):
2418
"Return the peer's certificate as a bytestring"
2419
try:
2420
cert_type = gnutls.certificate_type_get2(session._c_object,
2421
gnutls.CTYPE_PEERS)
2422
except AttributeError:
2423
cert_type = gnutls.certificate_type_get(session._c_object)
2424
if gnutls.has_rawpk:
2425
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2426
else:
2427
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2428
# If not a valid certificate type...
2429
if cert_type not in valid_cert_types:
2430
logger.info("Cert type %r not in %r", cert_type,
2431
valid_cert_types)
2432
# ...return invalid data
2433
return b""
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
2434
1454
list_size = ctypes.c_uint(1)
2435
cert_list = (gnutls.certificate_get_peers
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
2436
1457
(session._c_object, ctypes.byref(list_size)))
2437
1458
if not bool(cert_list) and list_size.value != 0:
2438
raise gnutls.Error("error getting peer certificate")
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
2439
1461
if list_size.value == 0:
2440
1462
return None
2441
1463
cert = cert_list[0]
2442
1464
return ctypes.string_at(cert.data, cert.size)
2443
2444
@staticmethod
2445
def key_id(certificate):
2446
"Convert a certificate bytestring to a hexdigit key ID"
2447
# New GnuTLS "datum" with the public key
2448
datum = gnutls.datum_t(
2449
ctypes.cast(ctypes.c_char_p(certificate),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.c_uint(len(certificate)))
2452
# XXX all these need to be created in the gnutls "module"
2453
# New empty GnuTLS certificate
2454
pubkey = gnutls.pubkey_t()
2455
gnutls.pubkey_init(ctypes.byref(pubkey))
2456
# Import the raw public key into the certificate
2457
gnutls.pubkey_import(pubkey,
2458
ctypes.byref(datum),
2459
gnutls.X509_FMT_DER)
2460
# New buffer for the key ID
2461
buf = ctypes.create_string_buffer(32)
2462
buf_len = ctypes.c_size_t(len(buf))
2463
# Get the key ID from the raw public key into the buffer
2464
gnutls.pubkey_get_key_id(pubkey,
2465
gnutls.KEYID_USE_SHA256,
2466
ctypes.cast(ctypes.byref(buf),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.byref(buf_len))
2469
# Deinit the certificate
2470
gnutls.pubkey_deinit(pubkey)
2471
2472
# Convert the buffer to a Python bytestring
2473
key_id = ctypes.string_at(buf, buf_len.value)
2474
# Convert the bytestring to hexadecimal notation
2475
hex_key_id = binascii.hexlify(key_id).upper()
2476
return hex_key_id
2477
1465
2478
1466
@staticmethod
2479
1467
def fingerprint(openpgp):
2480
1468
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2481
1469
# New GnuTLS "datum" with the OpenPGP public key
2482
datum = gnutls.datum_t(
2483
ctypes.cast(ctypes.c_char_p(openpgp),
2484
ctypes.POINTER(ctypes.c_ubyte)),
2485
ctypes.c_uint(len(openpgp)))
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
2486
1475
# New empty GnuTLS certificate
2487
crt = gnutls.openpgp_crt_t()
2488
gnutls.openpgp_crt_init(ctypes.byref(crt))
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2489
1479
# Import the OpenPGP public key into the certificate
2490
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2491
gnutls.OPENPGP_FMT_RAW)
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2492
1484
# Verify the self signature in the key
2493
1485
crtverify = ctypes.c_uint()
2494
gnutls.openpgp_crt_verify_self(crt, 0,
2495
ctypes.byref(crtverify))
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2496
1489
if crtverify.value != 0:
2497
gnutls.openpgp_crt_deinit(crt)
2498
raise gnutls.CertificateSecurityError(code
2499
=crtverify.value)
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
2500
1493
# New buffer for the fingerprint
2501
1494
buf = ctypes.create_string_buffer(20)
2502
1495
buf_len = ctypes.c_size_t()
2503
1496
# Get the fingerprint from the certificate into the buffer
2504
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2505
ctypes.byref(buf_len))
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2506
1500
# Deinit the certificate
2507
gnutls.openpgp_crt_deinit(crt)
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2508
1502
# Convert the buffer to a Python bytestring
2509
1503
fpr = ctypes.string_at(buf, buf_len.value)
2510
1504
# Convert the bytestring to hexadecimal notation
2511
hex_fpr = binascii.hexlify(fpr).upper()
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2512
1506
return hex_fpr
2513
1507
2514
1508
2515
class MultiprocessingMixIn:
1509
class MultiprocessingMixIn(object):
2516
1510
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2517
2518
1511
def sub_process_main(self, request, address):
2519
1512
try:
2520
1513
self.finish_request(request, address)
2521
except Exception:
1514
except:
2522
1515
self.handle_error(request, address)
2523
1516
self.close_request(request)
2524
1517
2525
1518
def process_request(self, request, address):
2526
1519
"""Start a new process to process the request."""
2527
proc = multiprocessing.Process(target=self.sub_process_main,
2528
args=(request, address))
1520
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
2529
1523
proc.start()
2530
1524
return proc
2531
1525
2532
1526
2533
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2534
1528
""" adds a pipe to the MixIn """
2535
2536
1529
def process_request(self, request, client_address):
2537
1530
"""Overrides and wraps the original process_request().
2538
1531
2539
1532
This function creates a new pipe in self.pipe
2540
1533
"""
2541
1534
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2542
1535
2543
1536
proc = MultiprocessingMixIn.process_request(self, request,
2544
1537
client_address)
2545
1538
self.child_pipe.close()
2546
1539
self.add_pipe(parent_pipe, proc)
2547
1540
2548
1541
def add_pipe(self, parent_pipe, proc):
2549
1542
"""Dummy function; override as necessary"""
2550
raise NotImplementedError()
1543
raise NotImplementedError
2551
1544
2552
1545
2553
1546
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2554
socketserver.TCPServer):
1547
socketserver.TCPServer, object):
2555
1548
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2556
1549
2557
1550
Attributes:
2558
1551
enabled: Boolean; whether this server is activated yet
2559
1552
interface: None or a network interface name (string)
2560
1553
use_ipv6: Boolean; to use IPv6 or not
2561
1554
"""
2562
2563
1555
def __init__(self, server_address, RequestHandlerClass,
2564
interface=None,
2565
use_ipv6=True,
2566
socketfd=None):
2567
"""If socketfd is set, use that file descriptor instead of
2568
creating a new one with socket.socket().
2569
"""
1556
interface=None, use_ipv6=True):
2570
1557
self.interface = interface
2571
1558
if use_ipv6:
2572
1559
self.address_family = socket.AF_INET6
2573
if socketfd is not None:
2574
# Save the file descriptor
2575
self.socketfd = socketfd
2576
# Save the original socket.socket() function
2577
self.socket_socket = socket.socket
2578
2579
# To implement --socket, we monkey patch socket.socket.
2580
#
2581
# (When socketserver.TCPServer is a new-style class, we
2582
# could make self.socket into a property instead of monkey
2583
# patching socket.socket.)
2584
#
2585
# Create a one-time-only replacement for socket.socket()
2586
@functools.wraps(socket.socket)
2587
def socket_wrapper(*args, **kwargs):
2588
# Restore original function so subsequent calls are
2589
# not affected.
2590
socket.socket = self.socket_socket
2591
del self.socket_socket
2592
# This time only, return a new socket object from the
2593
# saved file descriptor.
2594
return socket.fromfd(self.socketfd, *args, **kwargs)
2595
# Replace socket.socket() function with wrapper
2596
socket.socket = socket_wrapper
2597
# The socketserver.TCPServer.__init__ will call
2598
# socket.socket(), which might be our replacement,
2599
# socket_wrapper(), if socketfd was set.
2600
1560
socketserver.TCPServer.__init__(self, server_address,
2601
1561
RequestHandlerClass)
2602
2603
1562
def server_bind(self):
2604
1563
"""This overrides the normal server_bind() function
2605
1564
to bind to an interface if one was specified, and also NOT to
2606
1565
bind to an address or port if they were not specified."""
2607
global SO_BINDTODEVICE
2608
1566
if self.interface is not None:
2609
1567
if SO_BINDTODEVICE is None:
2610
# Fall back to a hard-coded value which seems to be
2611
# common enough.
2612
logger.warning("SO_BINDTODEVICE not found, trying 25")
2613
SO_BINDTODEVICE = 25
2614
try:
2615
self.socket.setsockopt(
2616
socket.SOL_SOCKET, SO_BINDTODEVICE,
2617
(self.interface + "\0").encode("utf-8"))
2618
except socket.error as error:
2619
if error.errno == errno.EPERM:
2620
logger.error("No permission to bind to"
2621
" interface %s", self.interface)
2622
elif error.errno == errno.ENOPROTOOPT:
2623
logger.error("SO_BINDTODEVICE not available;"
2624
" cannot bind to interface %s",
2625
self.interface)
2626
elif error.errno == errno.ENODEV:
2627
logger.error("Interface %s does not exist,"
2628
" cannot bind", self.interface)
2629
else:
2630
raise
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1570
self.interface)
1571
else:
1572
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
1585
self.interface)
1586
else:
1587
raise
2631
1588
# Only bind(2) the socket if we really need to.
2632
1589
if self.server_address[0] or self.server_address[1]:
2633
if self.server_address[1]:
2634
self.allow_reuse_address = True
2635
1590
if not self.server_address[0]:
2636
1591
if self.address_family == socket.AF_INET6:
2637
any_address = "::" # in6addr_any
1592
any_address = "::" # in6addr_any
2638
1593
else:
2639
any_address = "0.0.0.0" # INADDR_ANY
1594
any_address = socket.INADDR_ANY
2640
1595
self.server_address = (any_address,
2641
1596
self.server_address[1])
2642
1597
elif not self.server_address[1]:
2643
self.server_address = (self.server_address[0], 0)
1598
self.server_address = (self.server_address[0],
1599
0)
2644
1600
# if self.interface:
2645
1601
# self.server_address = (self.server_address[0],
2646
1602
# 0, # port
2652
1608
2653
1609
class MandosServer(IPv6_TCPServer):
2654
1610
"""Mandos server.
2655
1611
2656
1612
Attributes:
2657
1613
clients: set of Client objects
2658
1614
gnutls_priority GnuTLS priority string
2659
1615
use_dbus: Boolean; to emit D-Bus signals or not
2660
2661
Assumes a GLib.MainLoop event loop.
1616
1617
Assumes a gobject.MainLoop event loop.
2662
1618
"""
2663
2664
1619
def __init__(self, server_address, RequestHandlerClass,
2665
interface=None,
2666
use_ipv6=True,
2667
clients=None,
2668
gnutls_priority=None,
2669
use_dbus=True,
2670
socketfd=None):
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
2671
1622
self.enabled = False
2672
1623
self.clients = clients
2673
1624
if self.clients is None:
2674
self.clients = {}
1625
self.clients = set()
2675
1626
self.use_dbus = use_dbus
2676
1627
self.gnutls_priority = gnutls_priority
2677
1628
IPv6_TCPServer.__init__(self, server_address,
2678
1629
RequestHandlerClass,
2679
interface=interface,
2680
use_ipv6=use_ipv6,
2681
socketfd=socketfd)
2682
1630
interface = interface,
1631
use_ipv6 = use_ipv6)
2683
1632
def server_activate(self):
2684
1633
if self.enabled:
2685
1634
return socketserver.TCPServer.server_activate(self)
2686
1635
2687
1636
def enable(self):
2688
1637
self.enabled = True
2689
1638
2690
1639
def add_pipe(self, parent_pipe, proc):
2691
1640
# Call "handle_ipc" for both data and EOF events
2692
GLib.io_add_watch(
2693
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2694
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2695
functools.partial(self.handle_ipc,
2696
parent_pipe=parent_pipe,
2697
proc=proc))
2698
2699
def handle_ipc(self, source, condition,
2700
parent_pipe=None,
2701
proc=None,
2702
client_object=None):
2703
# error, or the other end of multiprocessing.Pipe has closed
2704
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2705
# Wait for other process to exit
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
1647
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
1664
# error or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2706
1666
proc.join()
2707
1667
return False
2708
1668
2709
1669
# Read a request from the child
2710
1670
request = parent_pipe.recv()
2711
1671
command = request[0]
2712
1672
2713
1673
if command == 'init':
2714
key_id = request[1].decode("ascii")
2715
fpr = request[2].decode("ascii")
2716
address = request[3]
2717
2718
for c in self.clients.values():
2719
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2720
continue
2721
if key_id and c.key_id == key_id:
2722
client = c
2723
break
2724
if fpr and c.fingerprint == fpr:
1674
fpr = request[1]
1675
address = request[2]
1676
1677
for c in self.clients:
1678
if c.fingerprint == fpr:
2725
1679
client = c
2726
1680
break
2727
1681
else:
2728
logger.info("Client not found for key ID: %s, address"
2729
": %s", key_id or fpr, address)
1682
logger.info("Client not found for fingerprint: %s, ad"
1683
"dress: %s", fpr, address)
2730
1684
if self.use_dbus:
2731
1685
# Emit D-Bus signal
2732
mandos_dbus_service.ClientNotFound(key_id or fpr,
1686
mandos_dbus_service.ClientNotFound(fpr,
2733
1687
address[0])
2734
1688
parent_pipe.send(False)
2735
1689
return False
2736
2737
GLib.io_add_watch(
2738
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2739
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2740
functools.partial(self.handle_ipc,
2741
parent_pipe=parent_pipe,
2742
proc=proc,
2743
client_object=client))
1690
1691
gobject.io_add_watch(parent_pipe.fileno(),
1692
gobject.IO_IN | gobject.IO_HUP,
1693
functools.partial(self.handle_ipc,
1694
parent_pipe =
1695
parent_pipe,
1696
proc = proc,
1697
client_object =
1698
client))
2744
1699
parent_pipe.send(True)
2745
1700
# remove the old hook in favor of the new above hook on
2746
1701
# same fileno
2749
1704
funcname = request[1]
2750
1705
args = request[2]
2751
1706
kwargs = request[3]
2752
1707
2753
1708
parent_pipe.send(('data', getattr(client_object,
2754
1709
funcname)(*args,
2755
**kwargs)))
2756
1710
**kwargs)))
1711
2757
1712
if command == 'getattr':
2758
1713
attrname = request[1]
2759
if isinstance(client_object.__getattribute__(attrname),
2760
collections.abc.Callable):
2761
parent_pipe.send(('function', ))
1714
if callable(client_object.__getattribute__(attrname)):
1715
parent_pipe.send(('function',))
2762
1716
else:
2763
parent_pipe.send((
2764
'data', client_object.__getattribute__(attrname)))
2765
1717
parent_pipe.send(('data', client_object
1718
.__getattribute__(attrname)))
1719
2766
1720
if command == 'setattr':
2767
1721
attrname = request[1]
2768
1722
value = request[2]
2769
1723
setattr(client_object, attrname, value)
2770
1724
2771
1725
return True
2772
1726
2773
1727
2774
def rfc3339_duration_to_delta(duration):
2775
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2776
2777
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2780
True
2781
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2782
True
2783
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2784
True
2785
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2786
True
2787
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2788
True
2789
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2790
True
2791
"""
2792
2793
# Parsing an RFC 3339 duration with regular expressions is not
2794
# possible - there would have to be multiple places for the same
2795
# values, like seconds. The current code, while more esoteric, is
2796
# cleaner without depending on a parsing library. If Python had a
2797
# built-in library for parsing we would use it, but we'd like to
2798
# avoid excessive use of external libraries.
2799
2800
# New type for defining tokens, syntax, and semantics all-in-one
2801
Token = collections.namedtuple("Token", (
2802
"regexp", # To match token; if "value" is not None, must have
2803
# a "group" containing digits
2804
"value", # datetime.timedelta or None
2805
"followers")) # Tokens valid after this token
2806
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2807
# the "duration" ABNF definition in RFC 3339, Appendix A.
2808
token_end = Token(re.compile(r"$"), None, frozenset())
2809
token_second = Token(re.compile(r"(\d+)S"),
2810
datetime.timedelta(seconds=1),
2811
frozenset((token_end, )))
2812
token_minute = Token(re.compile(r"(\d+)M"),
2813
datetime.timedelta(minutes=1),
2814
frozenset((token_second, token_end)))
2815
token_hour = Token(re.compile(r"(\d+)H"),
2816
datetime.timedelta(hours=1),
2817
frozenset((token_minute, token_end)))
2818
token_time = Token(re.compile(r"T"),
2819
None,
2820
frozenset((token_hour, token_minute,
2821
token_second)))
2822
token_day = Token(re.compile(r"(\d+)D"),
2823
datetime.timedelta(days=1),
2824
frozenset((token_time, token_end)))
2825
token_month = Token(re.compile(r"(\d+)M"),
2826
datetime.timedelta(weeks=4),
2827
frozenset((token_day, token_end)))
2828
token_year = Token(re.compile(r"(\d+)Y"),
2829
datetime.timedelta(weeks=52),
2830
frozenset((token_month, token_end)))
2831
token_week = Token(re.compile(r"(\d+)W"),
2832
datetime.timedelta(weeks=1),
2833
frozenset((token_end, )))
2834
token_duration = Token(re.compile(r"P"), None,
2835
frozenset((token_year, token_month,
2836
token_day, token_time,
2837
token_week)))
2838
# Define starting values:
2839
# Value so far
2840
value = datetime.timedelta()
2841
found_token = None
2842
# Following valid tokens
2843
followers = frozenset((token_duration, ))
2844
# String left to parse
2845
s = duration
2846
# Loop until end token is found
2847
while found_token is not token_end:
2848
# Search for any currently valid tokens
2849
for token in followers:
2850
match = token.regexp.match(s)
2851
if match is not None:
2852
# Token found
2853
if token.value is not None:
2854
# Value found, parse digits
2855
factor = int(match.group(1), 10)
2856
# Add to value so far
2857
value += factor * token.value
2858
# Strip token from string
2859
s = token.regexp.sub("", s, 1)
2860
# Go to found token
2861
found_token = token
2862
# Set valid next tokens
2863
followers = found_token.followers
2864
break
2865
else:
2866
# No currently valid tokens were found
2867
raise ValueError("Invalid RFC 3339 duration: {!r}"
2868
.format(duration))
2869
# End token found
2870
return value
2871
2872
2873
1728
def string_to_delta(interval):
2874
1729
"""Parse a string and return a datetime.timedelta
2875
2876
>>> string_to_delta('7d') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2879
True
2880
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2881
True
2882
>>> string_to_delta('24h') == datetime.timedelta(1)
2883
True
2884
>>> string_to_delta('1w') == datetime.timedelta(7)
2885
True
2886
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2887
True
1730
1731
>>> string_to_delta('7d')
1732
datetime.timedelta(7)
1733
>>> string_to_delta('60s')
1734
datetime.timedelta(0, 60)
1735
>>> string_to_delta('60m')
1736
datetime.timedelta(0, 3600)
1737
>>> string_to_delta('24h')
1738
datetime.timedelta(1)
1739
>>> string_to_delta('1w')
1740
datetime.timedelta(7)
1741
>>> string_to_delta('5m 30s')
1742
datetime.timedelta(0, 330)
2888
1743
"""
2889
2890
try:
2891
return rfc3339_duration_to_delta(interval)
2892
except ValueError:
2893
pass
2894
2895
1744
timevalue = datetime.timedelta(0)
2896
1745
for s in interval.split():
2897
1746
try:
2898
suffix = s[-1]
1747
suffix = unicode(s[-1])
2899
1748
value = int(s[:-1])
2900
1749
if suffix == "d":
2901
1750
delta = datetime.timedelta(value)
2908
1757
elif suffix == "w":
2909
1758
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2910
1759
else:
2911
raise ValueError("Unknown suffix {!r}".format(suffix))
2912
except IndexError as e:
1760
raise ValueError("Unknown suffix %r" % suffix)
1761
except (ValueError, IndexError) as e:
2913
1762
raise ValueError(*(e.args))
2914
1763
timevalue += delta
2915
1764
return timevalue
2916
1765
2917
1766
2918
def daemon(nochdir=False, noclose=False):
1767
def if_nametoindex(interface):
1768
"""Call the C function if_nametoindex(), or equivalent
1769
1770
Note: This function cannot accept a unicode string."""
1771
global if_nametoindex
1772
try:
1773
if_nametoindex = (ctypes.cdll.LoadLibrary
1774
(ctypes.util.find_library("c"))
1775
.if_nametoindex)
1776
except (OSError, AttributeError):
1777
logger.warning("Doing if_nametoindex the hard way")
1778
def if_nametoindex(interface):
1779
"Get an interface index the hard way, i.e. using fcntl()"
1780
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1781
with contextlib.closing(socket.socket()) as s:
1782
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1783
struct.pack(str("16s16x"),
1784
interface))
1785
interface_index = struct.unpack(str("I"),
1786
ifreq[16:20])[0]
1787
return interface_index
1788
return if_nametoindex(interface)
1789
1790
1791
def daemon(nochdir = False, noclose = False):
2919
1792
"""See daemon(3). Standard BSD Unix function.
2920
1793
2921
1794
This should really exist as os.daemon, but it doesn't (yet)."""
2922
1795
if os.fork():
2923
1796
sys.exit()
2928
1801
sys.exit()
2929
1802
if not noclose:
2930
1803
# Close all standard open file descriptors
2931
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1804
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2932
1805
if not stat.S_ISCHR(os.fstat(null).st_mode):
2933
1806
raise OSError(errno.ENODEV,
2934
"{} not a character device"
2935
.format(os.devnull))
1807
"%s not a character device"
1808
% os.path.devnull)
2936
1809
os.dup2(null, sys.stdin.fileno())
2937
1810
os.dup2(null, sys.stdout.fileno())
2938
1811
os.dup2(null, sys.stderr.fileno())
2941
1814
2942
1815
2943
1816
def main():
2944
1817
2945
1818
##################################################################
2946
1819
# Parsing of options, both command line and config file
2947
1820
2948
1821
parser = argparse.ArgumentParser()
2949
1822
parser.add_argument("-v", "--version", action="version",
2950
version="%(prog)s {}".format(version),
1823
version = "%%(prog)s %s" % version,
2951
1824
help="show version number and exit")
2952
1825
parser.add_argument("-i", "--interface", metavar="IF",
2953
1826
help="Bind to interface IF")
2959
1832
help="Run self-test")
2960
1833
parser.add_argument("--debug", action="store_true",
2961
1834
help="Debug mode; run in foreground and log"
2962
" to terminal", default=None)
1835
" to terminal")
2963
1836
parser.add_argument("--debuglevel", metavar="LEVEL",
2964
1837
help="Debug level for stdout output")
2965
1838
parser.add_argument("--priority", help="GnuTLS"
2972
1845
" files")
2973
1846
parser.add_argument("--no-dbus", action="store_false",
2974
1847
dest="use_dbus", help="Do not provide D-Bus"
2975
" system bus interface", default=None)
1848
" system bus interface")
2976
1849
parser.add_argument("--no-ipv6", action="store_false",
2977
dest="use_ipv6", help="Do not use IPv6",
2978
default=None)
2979
parser.add_argument("--no-restore", action="store_false",
2980
dest="restore", help="Do not restore stored"
2981
" state", default=None)
2982
parser.add_argument("--socket", type=int,
2983
help="Specify a file descriptor to a network"
2984
" socket to use instead of creating one")
2985
parser.add_argument("--statedir", metavar="DIR",
2986
help="Directory to save/restore state in")
2987
parser.add_argument("--foreground", action="store_true",
2988
help="Run in foreground", default=None)
2989
parser.add_argument("--no-zeroconf", action="store_false",
2990
dest="zeroconf", help="Do not use Zeroconf",
2991
default=None)
2992
1850
dest="use_ipv6", help="Do not use IPv6")
2993
1851
options = parser.parse_args()
2994
1852
1853
if options.check:
1854
import doctest
1855
doctest.testmod()
1856
sys.exit()
1857
2995
1858
# Default values for config file for server-global settings
2996
if gnutls.has_rawpk:
2997
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2998
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2999
else:
3000
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3001
":+SIGN-DSA-SHA256")
3002
server_defaults = {"interface": "",
3003
"address": "",
3004
"port": "",
3005
"debug": "False",
3006
"priority": priority,
3007
"servicename": "Mandos",
3008
"use_dbus": "True",
3009
"use_ipv6": "True",
3010
"debuglevel": "",
3011
"restore": "True",
3012
"socket": "",
3013
"statedir": "/var/lib/mandos",
3014
"foreground": "False",
3015
"zeroconf": "True",
3016
}
3017
del priority
3018
1859
server_defaults = { "interface": "",
1860
"address": "",
1861
"port": "",
1862
"debug": "False",
1863
"priority":
1864
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1865
"servicename": "Mandos",
1866
"use_dbus": "True",
1867
"use_ipv6": "True",
1868
"debuglevel": "",
1869
}
1870
3019
1871
# Parse config file for server-global settings
3020
server_config = configparser.ConfigParser(server_defaults)
1872
server_config = configparser.SafeConfigParser(server_defaults)
3021
1873
del server_defaults
3022
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3023
# Convert the ConfigParser object to a dict
1874
server_config.read(os.path.join(options.configdir,
1875
"mandos.conf"))
1876
# Convert the SafeConfigParser object to a dict
3024
1877
server_settings = server_config.defaults()
3025
1878
# Use the appropriate methods on the non-string config options
3026
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3027
"foreground", "zeroconf"):
1879
for option in ("debug", "use_dbus", "use_ipv6"):
3028
1880
server_settings[option] = server_config.getboolean("DEFAULT",
3029
1881
option)
3030
1882
if server_settings["port"]:
3031
1883
server_settings["port"] = server_config.getint("DEFAULT",
3032
1884
"port")
3033
if server_settings["socket"]:
3034
server_settings["socket"] = server_config.getint("DEFAULT",
3035
"socket")
3036
# Later, stdin will, and stdout and stderr might, be dup'ed
3037
# over with an opened os.devnull. But we don't want this to
3038
# happen with a supplied network socket.
3039
if 0 <= server_settings["socket"] <= 2:
3040
server_settings["socket"] = os.dup(server_settings
3041
["socket"])
3042
1885
del server_config
3043
1886
3044
1887
# Override the settings from the config file with command line
3045
1888
# options, if set.
3046
1889
for option in ("interface", "address", "port", "debug",
3047
"priority", "servicename", "configdir", "use_dbus",
3048
"use_ipv6", "debuglevel", "restore", "statedir",
3049
"socket", "foreground", "zeroconf"):
1890
"priority", "servicename", "configdir",
1891
"use_dbus", "use_ipv6", "debuglevel"):
3050
1892
value = getattr(options, option)
3051
1893
if value is not None:
3052
1894
server_settings[option] = value
3053
1895
del options
3054
1896
# Force all strings to be unicode
3055
1897
for option in server_settings.keys():
3056
if isinstance(server_settings[option], bytes):
3057
server_settings[option] = (server_settings[option]
3058
.decode("utf-8"))
3059
# Force all boolean options to be boolean
3060
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3061
"foreground", "zeroconf"):
3062
server_settings[option] = bool(server_settings[option])
3063
# Debug implies foreground
3064
if server_settings["debug"]:
3065
server_settings["foreground"] = True
1898
if type(server_settings[option]) is str:
1899
server_settings[option] = unicode(server_settings[option])
3066
1900
# Now we have our good server settings in "server_settings"
3067
1901
3068
1902
##################################################################
3069
3070
if (not server_settings["zeroconf"]
3071
and not (server_settings["port"]
3072
or server_settings["socket"] != "")):
3073
parser.error("Needs port or socket to work without Zeroconf")
3074
1903
3075
1904
# For convenience
3076
1905
debug = server_settings["debug"]
3077
1906
debuglevel = server_settings["debuglevel"]
3078
1907
use_dbus = server_settings["use_dbus"]
3079
1908
use_ipv6 = server_settings["use_ipv6"]
3080
stored_state_path = os.path.join(server_settings["statedir"],
3081
stored_state_file)
3082
foreground = server_settings["foreground"]
3083
zeroconf = server_settings["zeroconf"]
3084
3085
if debug:
3086
initlogger(debug, logging.DEBUG)
3087
else:
3088
if not debuglevel:
3089
initlogger(debug)
3090
else:
3091
level = getattr(logging, debuglevel.upper())
3092
initlogger(debug, level)
3093
1909
3094
1910
if server_settings["servicename"] != "Mandos":
3095
syslogger.setFormatter(
3096
logging.Formatter('Mandos ({}) [%(process)d]:'
3097
' %(levelname)s: %(message)s'.format(
3098
server_settings["servicename"])))
3099
1911
syslogger.setFormatter(logging.Formatter
1912
('Mandos (%s) [%%(process)d]:'
1913
' %%(levelname)s: %%(message)s'
1914
% server_settings["servicename"]))
1915
3100
1916
# Parse config file with clients
3101
client_config = configparser.ConfigParser(Client.client_defaults)
1917
client_defaults = { "timeout": "5m",
1918
"extended_timeout": "15m",
1919
"interval": "2m",
1920
"checker": "fping -q -- %%(host)s",
1921
"host": "",
1922
"approval_delay": "0s",
1923
"approval_duration": "1s",
1924
}
1925
client_config = configparser.SafeConfigParser(client_defaults)
3102
1926
client_config.read(os.path.join(server_settings["configdir"],
3103
1927
"clients.conf"))
3104
1928
3105
1929
global mandos_dbus_service
3106
1930
mandos_dbus_service = None
3107
3108
socketfd = None
3109
if server_settings["socket"] != "":
3110
socketfd = server_settings["socket"]
3111
tcp_server = MandosServer(
3112
(server_settings["address"], server_settings["port"]),
3113
ClientHandler,
3114
interface=(server_settings["interface"] or None),
3115
use_ipv6=use_ipv6,
3116
gnutls_priority=server_settings["priority"],
3117
use_dbus=use_dbus,
3118
socketfd=socketfd)
3119
if not foreground:
3120
pidfilename = "/run/mandos.pid"
3121
if not os.path.isdir("/run/."):
3122
pidfilename = "/var/run/mandos.pid"
3123
pidfile = None
3124
try:
3125
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3126
except IOError as e:
3127
logger.error("Could not open file %r", pidfilename,
3128
exc_info=e)
3129
3130
for name, group in (("_mandos", "_mandos"),
3131
("mandos", "mandos"),
3132
("nobody", "nogroup")):
3133
try:
3134
uid = pwd.getpwnam(name).pw_uid
3135
gid = pwd.getpwnam(group).pw_gid
3136
break
1931
1932
tcp_server = MandosServer((server_settings["address"],
1933
server_settings["port"]),
1934
ClientHandler,
1935
interface=(server_settings["interface"]
1936
or None),
1937
use_ipv6=use_ipv6,
1938
gnutls_priority=
1939
server_settings["priority"],
1940
use_dbus=use_dbus)
1941
if not debug:
1942
pidfilename = "/var/run/mandos.pid"
1943
try:
1944
pidfile = open(pidfilename, "w")
1945
except IOError:
1946
logger.error("Could not open file %r", pidfilename)
1947
1948
try:
1949
uid = pwd.getpwnam("_mandos").pw_uid
1950
gid = pwd.getpwnam("_mandos").pw_gid
1951
except KeyError:
1952
try:
1953
uid = pwd.getpwnam("mandos").pw_uid
1954
gid = pwd.getpwnam("mandos").pw_gid
3137
1955
except KeyError:
3138
continue
3139
else:
3140
uid = 65534
3141
gid = 65534
1956
try:
1957
uid = pwd.getpwnam("nobody").pw_uid
1958
gid = pwd.getpwnam("nobody").pw_gid
1959
except KeyError:
1960
uid = 65534
1961
gid = 65534
3142
1962
try:
3143
1963
os.setgid(gid)
3144
1964
os.setuid(uid)
3145
if debug:
3146
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3147
gid))
3148
1965
except OSError as error:
3149
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3150
.format(uid, gid, os.strerror(error.errno)))
3151
if error.errno != errno.EPERM:
3152
raise
3153
1966
if error[0] != errno.EPERM:
1967
raise error
1968
1969
if not debug and not debuglevel:
1970
syslogger.setLevel(logging.WARNING)
1971
console.setLevel(logging.WARNING)
1972
if debuglevel:
1973
level = getattr(logging, debuglevel.upper())
1974
syslogger.setLevel(level)
1975
console.setLevel(level)
1976
3154
1977
if debug:
3155
1978
# Enable all possible GnuTLS debugging
3156
1979
3157
1980
# "Use a log level over 10 to enable all debugging options."
3158
1981
# - GnuTLS manual
3159
gnutls.global_set_log_level(11)
3160
3161
@gnutls.log_func
1982
gnutls.library.functions.gnutls_global_set_log_level(11)
1983
1984
@gnutls.library.types.gnutls_log_func
3162
1985
def debug_gnutls(level, string):
3163
1986
logger.debug("GnuTLS: %s", string[:-1])
3164
3165
gnutls.global_set_log_function(debug_gnutls)
3166
1987
1988
(gnutls.library.functions
1989
.gnutls_global_set_log_function(debug_gnutls))
1990
3167
1991
# Redirect stdin so all checkers get /dev/null
3168
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1992
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3169
1993
os.dup2(null, sys.stdin.fileno())
3170
1994
if null > 2:
3171
1995
os.close(null)
3172
1996
else:
1997
# No console logging
1998
logger.removeHandler(console)
1999
3173
2000
# Need to fork before connecting to D-Bus
3174
if not foreground:
2001
if not debug:
3175
2002
# Close all input and output, do double fork, etc.
3176
2003
daemon()
3177
3178
if gi.version_info < (3, 10, 2):
3179
# multiprocessing will use threads, so before we use GLib we
3180
# need to inform GLib that threads will be used.
3181
GLib.threads_init()
3182
2004
3183
2005
global main_loop
3184
2006
# From the Avahi example code
3185
DBusGMainLoop(set_as_default=True)
3186
main_loop = GLib.MainLoop()
2007
DBusGMainLoop(set_as_default=True )
2008
main_loop = gobject.MainLoop()
3187
2009
bus = dbus.SystemBus()
3188
2010
# End of Avahi example code
3189
2011
if use_dbus:
3190
2012
try:
3191
2013
bus_name = dbus.service.BusName("se.recompile.Mandos",
3192
bus,
3193
do_not_queue=True)
3194
old_bus_name = dbus.service.BusName(
3195
"se.bsnet.fukt.Mandos", bus,
3196
do_not_queue=True)
3197
except dbus.exceptions.DBusException as e:
3198
logger.error("Disabling D-Bus:", exc_info=e)
2014
bus, do_not_queue=True)
2015
old_bus_name = (dbus.service.BusName
2016
("se.bsnet.fukt.Mandos", bus,
2017
do_not_queue=True))
2018
except dbus.exceptions.NameExistsException as e:
2019
logger.error(unicode(e) + ", disabling D-Bus")
3199
2020
use_dbus = False
3200
2021
server_settings["use_dbus"] = False
3201
2022
tcp_server.use_dbus = False
3202
if zeroconf:
3203
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3204
service = AvahiServiceToSyslog(
3205
name=server_settings["servicename"],
3206
servicetype="_mandos._tcp",
3207
protocol=protocol,
3208
bus=bus)
3209
if server_settings["interface"]:
3210
service.interface = if_nametoindex(
3211
server_settings["interface"].encode("utf-8"))
3212
2023
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2024
service = AvahiService(name = server_settings["servicename"],
2025
servicetype = "_mandos._tcp",
2026
protocol = protocol, bus = bus)
2027
if server_settings["interface"]:
2028
service.interface = (if_nametoindex
2029
(str(server_settings["interface"])))
2030
3213
2031
global multiprocessing_manager
3214
2032
multiprocessing_manager = multiprocessing.Manager()
3215
2033
3216
2034
client_class = Client
3217
2035
if use_dbus:
3218
client_class = functools.partial(ClientDBus, bus=bus)
3219
3220
client_settings = Client.config_parser(client_config)
3221
old_client_settings = {}
3222
clients_data = {}
3223
3224
# This is used to redirect stdout and stderr for checker processes
3225
global wnull
3226
wnull = open(os.devnull, "w") # A writable /dev/null
3227
# Only used if server is running in foreground but not in debug
3228
# mode
3229
if debug or not foreground:
3230
wnull.close()
3231
3232
# Get client data and settings from last running state.
3233
if server_settings["restore"]:
3234
try:
3235
with open(stored_state_path, "rb") as stored_state:
3236
if sys.version_info.major == 2:
3237
clients_data, old_client_settings = pickle.load(
3238
stored_state)
3239
else:
3240
bytes_clients_data, bytes_old_client_settings = (
3241
pickle.load(stored_state, encoding="bytes"))
3242
# Fix bytes to strings
3243
# clients_data
3244
# .keys()
3245
clients_data = {(key.decode("utf-8")
3246
if isinstance(key, bytes)
3247
else key): value
3248
for key, value in
3249
bytes_clients_data.items()}
3250
del bytes_clients_data
3251
for key in clients_data:
3252
value = {(k.decode("utf-8")
3253
if isinstance(k, bytes) else k): v
3254
for k, v in
3255
clients_data[key].items()}
3256
clients_data[key] = value
3257
# .client_structure
3258
value["client_structure"] = [
3259
(s.decode("utf-8")
3260
if isinstance(s, bytes)
3261
else s) for s in
3262
value["client_structure"]]
3263
# .name, .host, and .checker_command
3264
for k in ("name", "host", "checker_command"):
3265
if isinstance(value[k], bytes):
3266
value[k] = value[k].decode("utf-8")
3267
if "key_id" not in value:
3268
value["key_id"] = ""
3269
elif "fingerprint" not in value:
3270
value["fingerprint"] = ""
3271
# old_client_settings
3272
# .keys()
3273
old_client_settings = {
3274
(key.decode("utf-8")
3275
if isinstance(key, bytes)
3276
else key): value
3277
for key, value in
3278
bytes_old_client_settings.items()}
3279
del bytes_old_client_settings
3280
# .host and .checker_command
3281
for value in old_client_settings.values():
3282
for attribute in ("host", "checker_command"):
3283
if isinstance(value[attribute], bytes):
3284
value[attribute] = (value[attribute]
3285
.decode("utf-8"))
3286
os.remove(stored_state_path)
3287
except IOError as e:
3288
if e.errno == errno.ENOENT:
3289
logger.warning("Could not load persistent state:"
3290
" {}".format(os.strerror(e.errno)))
3291
else:
3292
logger.critical("Could not load persistent state:",
3293
exc_info=e)
3294
raise
3295
except EOFError as e:
3296
logger.warning("Could not load persistent state: "
3297
"EOFError:",
3298
exc_info=e)
3299
3300
with PGPEngine() as pgp:
3301
for client_name, client in clients_data.items():
3302
# Skip removed clients
3303
if client_name not in client_settings:
3304
continue
3305
3306
# Decide which value to use after restoring saved state.
3307
# We have three different values: Old config file,
3308
# new config file, and saved state.
3309
# New config value takes precedence if it differs from old
3310
# config value, otherwise use saved state.
3311
for name, value in client_settings[client_name].items():
3312
try:
3313
# For each value in new config, check if it
3314
# differs from the old config value (Except for
3315
# the "secret" attribute)
3316
if (name != "secret"
3317
and (value !=
3318
old_client_settings[client_name][name])):
3319
client[name] = value
3320
except KeyError:
3321
pass
3322
3323
# Clients who has passed its expire date can still be
3324
# enabled if its last checker was successful. A Client
3325
# whose checker succeeded before we stored its state is
3326
# assumed to have successfully run all checkers during
3327
# downtime.
3328
if client["enabled"]:
3329
if datetime.datetime.utcnow() >= client["expires"]:
3330
if not client["last_checked_ok"]:
3331
logger.warning(
3332
"disabling client {} - Client never "
3333
"performed a successful checker".format(
3334
client_name))
3335
client["enabled"] = False
3336
elif client["last_checker_status"] != 0:
3337
logger.warning(
3338
"disabling client {} - Client last"
3339
" checker failed with error code"
3340
" {}".format(
3341
client_name,
3342
client["last_checker_status"]))
3343
client["enabled"] = False
3344
else:
3345
client["expires"] = (
3346
datetime.datetime.utcnow()
3347
+ client["timeout"])
3348
logger.debug("Last checker succeeded,"
3349
" keeping {} enabled".format(
3350
client_name))
2036
client_class = functools.partial(ClientDBusTransitional,
2037
bus = bus)
2038
def client_config_items(config, section):
2039
special_settings = {
2040
"approved_by_default":
2041
lambda: config.getboolean(section,
2042
"approved_by_default"),
2043
}
2044
for name, value in config.items(section):
3351
2045
try:
3352
client["secret"] = pgp.decrypt(
3353
client["encrypted_secret"],
3354
client_settings[client_name]["secret"])
3355
except PGPError:
3356
# If decryption fails, we use secret from new settings
3357
logger.debug("Failed to decrypt {} old secret".format(
3358
client_name))
3359
client["secret"] = (client_settings[client_name]
3360
["secret"])
3361
3362
# Add/remove clients based on new changes made to config
3363
for client_name in (set(old_client_settings)
3364
- set(client_settings)):
3365
del clients_data[client_name]
3366
for client_name in (set(client_settings)
3367
- set(old_client_settings)):
3368
clients_data[client_name] = client_settings[client_name]
3369
3370
# Create all client objects
3371
for client_name, client in clients_data.items():
3372
tcp_server.clients[client_name] = client_class(
3373
name=client_name,
3374
settings=client,
3375
server_settings=server_settings)
3376
2046
yield (name, special_settings[name]())
2047
except KeyError:
2048
yield (name, value)
2049
2050
tcp_server.clients.update(set(
2051
client_class(name = section,
2052
config= dict(client_config_items(
2053
client_config, section)))
2054
for section in client_config.sections()))
3377
2055
if not tcp_server.clients:
3378
2056
logger.warning("No clients defined")
3379
3380
if not foreground:
3381
if pidfile is not None:
3382
pid = os.getpid()
3383
try:
3384
with pidfile:
3385
print(pid, file=pidfile)
3386
except IOError:
3387
logger.error("Could not write to file %r with PID %d",
3388
pidfilename, pid)
3389
del pidfile
2057
2058
if not debug:
2059
try:
2060
with pidfile:
2061
pid = os.getpid()
2062
pidfile.write(str(pid) + "\n".encode("utf-8"))
2063
del pidfile
2064
except IOError:
2065
logger.error("Could not write to file %r with PID %d",
2066
pidfilename, pid)
2067
except NameError:
2068
# "pidfile" was never created
2069
pass
3390
2070
del pidfilename
3391
3392
for termsig in (signal.SIGHUP, signal.SIGTERM):
3393
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3394
lambda: main_loop.quit() and False)
3395
2071
2072
signal.signal(signal.SIGINT, signal.SIG_IGN)
2073
2074
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2075
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2076
3396
2077
if use_dbus:
3397
3398
@alternate_dbus_interfaces(
3399
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3400
class MandosDBusService(DBusObjectWithObjectManager):
2078
class MandosDBusService(dbus.service.Object):
3401
2079
"""A D-Bus proxy object"""
3402
3403
2080
def __init__(self):
3404
2081
dbus.service.Object.__init__(self, bus, "/")
3405
3406
2082
_interface = "se.recompile.Mandos"
3407
2083
3408
2084
@dbus.service.signal(_interface, signature="o")
3409
2085
def ClientAdded(self, objpath):
3410
2086
"D-Bus signal"
3411
2087
pass
3412
2088
3413
2089
@dbus.service.signal(_interface, signature="ss")
3414
def ClientNotFound(self, key_id, address):
2090
def ClientNotFound(self, fingerprint, address):
3415
2091
"D-Bus signal"
3416
2092
pass
3417
3418
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3419
"true"})
2093
3420
2094
@dbus.service.signal(_interface, signature="os")
3421
2095
def ClientRemoved(self, objpath, name):
3422
2096
"D-Bus signal"
3423
2097
pass
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2098
3427
2099
@dbus.service.method(_interface, out_signature="ao")
3428
2100
def GetAllClients(self):
3429
2101
"D-Bus method"
3430
return dbus.Array(c.dbus_object_path for c in
3431
tcp_server.clients.values())
3432
3433
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3434
"true"})
2102
return dbus.Array(c.dbus_object_path
2103
for c in tcp_server.clients)
2104
3435
2105
@dbus.service.method(_interface,
3436
2106
out_signature="a{oa{sv}}")
3437
2107
def GetAllClientsWithProperties(self):
3438
2108
"D-Bus method"
3439
2109
return dbus.Dictionary(
3440
{c.dbus_object_path: c.GetAll(
3441
"se.recompile.Mandos.Client")
3442
for c in tcp_server.clients.values()},
2110
((c.dbus_object_path, c.GetAll(""))
2111
for c in tcp_server.clients),
3443
2112
signature="oa{sv}")
3444
2113
3445
2114
@dbus.service.method(_interface, in_signature="o")
3446
2115
def RemoveClient(self, object_path):
3447
2116
"D-Bus method"
3448
for c in tcp_server.clients.values():
2117
for c in tcp_server.clients:
3449
2118
if c.dbus_object_path == object_path:
3450
del tcp_server.clients[c.name]
2119
tcp_server.clients.remove(c)
3451
2120
c.remove_from_connection()
3452
# Don't signal the disabling
2121
# Don't signal anything except ClientRemoved
3453
2122
c.disable(quiet=True)
3454
# Emit D-Bus signal for removal
3455
self.client_removed_signal(c)
2123
# Emit D-Bus signal
2124
self.ClientRemoved(object_path, c.name)
3456
2125
return
3457
2126
raise KeyError(object_path)
3458
2127
3459
2128
del _interface
3460
3461
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3462
out_signature="a{oa{sa{sv}}}")
3463
def GetManagedObjects(self):
3464
"""D-Bus method"""
3465
return dbus.Dictionary(
3466
{client.dbus_object_path:
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()})
3471
for client in tcp_server.clients.values()})
3472
3473
def client_added_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3475
if use_dbus:
3476
# New standard signal
3477
self.InterfacesAdded(
3478
client.dbus_object_path,
3479
dbus.Dictionary(
3480
{interface: client.GetAll(interface)
3481
for interface in
3482
client._get_all_interface_names()}))
3483
# Old signal
3484
self.ClientAdded(client.dbus_object_path)
3485
3486
def client_removed_signal(self, client):
3487
"""Send the new standard signal and the old signal"""
3488
if use_dbus:
3489
# New standard signal
3490
self.InterfacesRemoved(
3491
client.dbus_object_path,
3492
client._get_all_interface_names())
3493
# Old signal
3494
self.ClientRemoved(client.dbus_object_path,
3495
client.name)
3496
3497
mandos_dbus_service = MandosDBusService()
3498
3499
# Save modules to variables to exempt the modules from being
3500
# unloaded before the function registered with atexit() is run.
3501
mp = multiprocessing
3502
wn = wnull
3503
2129
2130
class MandosDBusServiceTransitional(MandosDBusService):
2131
__metaclass__ = AlternateDBusNamesMetaclass
2132
mandos_dbus_service = MandosDBusServiceTransitional()
2133
3504
2134
def cleanup():
3505
2135
"Cleanup function; run on exit"
3506
if zeroconf:
3507
service.cleanup()
3508
3509
mp.active_children()
3510
wn.close()
3511
if not (tcp_server.clients or client_settings):
3512
return
3513
3514
# Store client before exiting. Secrets are encrypted with key
3515
# based on what config file has. If config file is
3516
# removed/edited, old secret will thus be unrecovable.
3517
clients = {}
3518
with PGPEngine() as pgp:
3519
for client in tcp_server.clients.values():
3520
key = client_settings[client.name]["secret"]
3521
client.encrypted_secret = pgp.encrypt(client.secret,
3522
key)
3523
client_dict = {}
3524
3525
# A list of attributes that can not be pickled
3526
# + secret.
3527
exclude = {"bus", "changedstate", "secret",
3528
"checker", "server_settings"}
3529
for name, typ in inspect.getmembers(dbus.service
3530
.Object):
3531
exclude.add(name)
3532
3533
client_dict["encrypted_secret"] = (client
3534
.encrypted_secret)
3535
for attr in client.client_structure:
3536
if attr not in exclude:
3537
client_dict[attr] = getattr(client, attr)
3538
3539
clients[client.name] = client_dict
3540
del client_settings[client.name]["secret"]
3541
3542
try:
3543
with tempfile.NamedTemporaryFile(
3544
mode='wb',
3545
suffix=".pickle",
3546
prefix='clients-',
3547
dir=os.path.dirname(stored_state_path),
3548
delete=False) as stored_state:
3549
pickle.dump((clients, client_settings), stored_state,
3550
protocol=2)
3551
tempname = stored_state.name
3552
os.rename(tempname, stored_state_path)
3553
except (IOError, OSError) as e:
3554
if not debug:
3555
try:
3556
os.remove(tempname)
3557
except NameError:
3558
pass
3559
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3560
logger.warning("Could not save persistent state: {}"
3561
.format(os.strerror(e.errno)))
3562
else:
3563
logger.warning("Could not save persistent state:",
3564
exc_info=e)
3565
raise
3566
3567
# Delete all clients, and settings from config
2136
service.cleanup()
2137
2138
multiprocessing.active_children()
3568
2139
while tcp_server.clients:
3569
name, client = tcp_server.clients.popitem()
2140
client = tcp_server.clients.pop()
3570
2141
if use_dbus:
3571
2142
client.remove_from_connection()
3572
# Don't signal the disabling
2143
client.disable_hook = None
2144
# Don't signal anything except ClientRemoved
3573
2145
client.disable(quiet=True)
3574
# Emit D-Bus signal for removal
3575
2146
if use_dbus:
3576
mandos_dbus_service.client_removed_signal(client)
3577
client_settings.clear()
3578
2147
# Emit D-Bus signal
2148
mandos_dbus_service.ClientRemoved(client
2149
.dbus_object_path,
2150
client.name)
2151
3579
2152
atexit.register(cleanup)
3580
3581
for client in tcp_server.clients.values():
2153
2154
for client in tcp_server.clients:
3582
2155
if use_dbus:
3583
# Emit D-Bus signal for adding
3584
mandos_dbus_service.client_added_signal(client)
3585
# Need to initiate checking of clients
3586
if client.enabled:
3587
client.init_checker()
3588
2156
# Emit D-Bus signal
2157
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2158
client.enable()
2159
3589
2160
tcp_server.enable()
3590
2161
tcp_server.server_activate()
3591
2162
3592
2163
# Find out what port we got
3593
if zeroconf:
3594
service.port = tcp_server.socket.getsockname()[1]
2164
service.port = tcp_server.socket.getsockname()[1]
3595
2165
if use_ipv6:
3596
2166
logger.info("Now listening on address %r, port %d,"
3597
" flowinfo %d, scope_id %d",
3598
*tcp_server.socket.getsockname())
2167
" flowinfo %d, scope_id %d"
2168
% tcp_server.socket.getsockname())
3599
2169
else: # IPv4
3600
logger.info("Now listening on address %r, port %d",
3601
*tcp_server.socket.getsockname())
3602
3603
# service.interface = tcp_server.socket.getsockname()[3]
3604
2170
logger.info("Now listening on address %r, port %d"
2171
% tcp_server.socket.getsockname())
2172
2173
#service.interface = tcp_server.socket.getsockname()[3]
2174
3605
2175
try:
3606
if zeroconf:
3607
# From the Avahi example code
3608
try:
3609
service.activate()
3610
except dbus.exceptions.DBusException as error:
3611
logger.critical("D-Bus Exception", exc_info=error)
3612
cleanup()
3613
sys.exit(1)
3614
# End of Avahi example code
3615
3616
GLib.io_add_watch(
3617
GLib.IOChannel.unix_new(tcp_server.fileno()),
3618
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3619
lambda *args, **kwargs: (tcp_server.handle_request
3620
(*args[2:], **kwargs) or True))
3621
2176
# From the Avahi example code
2177
try:
2178
service.activate()
2179
except dbus.exceptions.DBusException as error:
2180
logger.critical("DBusException: %s", error)
2181
cleanup()
2182
sys.exit(1)
2183
# End of Avahi example code
2184
2185
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2186
lambda *args, **kwargs:
2187
(tcp_server.handle_request
2188
(*args[2:], **kwargs) or True))
2189
3622
2190
logger.debug("Starting main loop")
3623
2191
main_loop.run()
3624
2192
except AvahiError as error:
3625
logger.critical("Avahi Error", exc_info=error)
2193
logger.critical("AvahiError: %s", error)
3626
2194
cleanup()
3627
2195
sys.exit(1)
3628
2196
except KeyboardInterrupt:
3633
2201
# Must run before the D-Bus bus name gets deregistered
3634
2202
cleanup()
3635
2203
3636
3637
def should_only_run_tests():
3638
parser = argparse.ArgumentParser(add_help=False)
3639
parser.add_argument("--check", action='store_true')
3640
args, unknown_args = parser.parse_known_args()
3641
run_tests = args.check
3642
if run_tests:
3643
# Remove --check argument from sys.argv
3644
sys.argv[1:] = unknown_args
3645
return run_tests
3646
3647
# Add all tests from doctest strings
3648
def load_tests(loader, tests, none):
3649
import doctest
3650
tests.addTests(doctest.DocTestSuite())
3651
return tests
3652
2204
3653
2205
if __name__ == '__main__':
3654
try:
3655
if should_only_run_tests():
3656
# Call using ./mandos --check [--verbose]
3657
unittest.main()
3658
else:
3659
main()
3660
finally:
3661
logging.shutdown()
2206
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0