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- Committer: teddy at recompile
- Date: 2011-12-27 14:15:40 UTC
- mto: (237.7.109 trunk) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: teddy@recompile.se-20111227141540-ajrabf33q59jfa7t
Reorder TODO entries
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -b
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
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
68
82
69
import dbus
83
70
import dbus.service
84
import gi
85
from gi.repository import GLib
71
import gobject
72
import avahi
86
73
from dbus.mainloop.glib import DBusGMainLoop
87
74
import ctypes
88
75
import ctypes.util
89
76
import xml.dom.minidom
90
77
import inspect
91
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
78
import GnuPGInterface
79
101
80
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
82
except AttributeError:
106
83
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
84
from IN import SO_BINDTODEVICE
110
85
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
124
125
if sys.version_info.major == 2:
126
str = unicode
127
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.9"
86
SO_BINDTODEVICE = None
87
88
version = "1.4.1"
132
89
stored_state_file = "clients.pickle"
133
90
134
91
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
137
95
138
96
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
141
100
except (OSError, AttributeError):
142
143
101
def if_nametoindex(interface):
144
102
"Get an interface index the hard way, i.e. using fcntl()"
145
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
104
with contextlib.closing(socket.socket()) as s:
147
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
150
110
return interface_index
151
111
152
112
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
113
def initlogger(debug, level=logging.WARNING):
170
114
"""init logger and add loglevel"""
171
172
global syslogger
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
115
176
116
syslogger.setFormatter(logging.Formatter
177
117
('Mandos [%(process)d]: %(levelname)s:'
178
118
' %(message)s'))
179
119
logger.addHandler(syslogger)
180
120
181
121
if debug:
182
122
console = logging.StreamHandler()
183
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
193
133
pass
194
134
195
135
196
class PGPEngine:
136
class PGPEngine(object):
197
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
199
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
200
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == b"gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
214
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
220
147
def __enter__(self):
221
148
return self
222
223
def __exit__(self, exc_type, exc_value, traceback):
149
150
def __exit__ (self, exc_type, exc_value, traceback):
224
151
self._cleanup()
225
152
return False
226
153
227
154
def __del__(self):
228
155
self._cleanup()
229
156
230
157
def _cleanup(self):
231
158
if self.tempdir is not None:
232
159
# Delete contents of tempdir
233
160
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
161
topdown = False):
235
162
for filename in files:
236
163
os.remove(os.path.join(root, filename))
237
164
for dirname in dirs:
239
166
# Remove tempdir
240
167
os.rmdir(self.tempdir)
241
168
self.tempdir = None
242
169
243
170
def password_encode(self, password):
244
171
# Passphrase can not be empty and can not contain newlines or
245
172
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
252
return encoded
253
173
return b"mandos" + binascii.hexlify(password)
174
254
175
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
259
passfile.flush()
260
proc = subprocess.Popen([self.gpg, '--symmetric',
261
'--passphrase-file',
262
passfile.name]
263
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
269
raise PGPError(err)
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
270
190
return ciphertext
271
191
272
192
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
277
passfile.flush()
278
proc = subprocess.Popen([self.gpg, '--decrypt',
279
'--passphrase-file',
280
passfile.name]
281
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
287
raise PGPError(err)
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
288
207
return decrypted_plaintext
289
208
290
209
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
316
210
317
211
class AvahiError(Exception):
318
212
def __init__(self, value, *args, **kwargs):
319
213
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
323
217
324
218
class AvahiServiceError(AvahiError):
325
219
pass
326
220
327
328
221
class AvahiGroupError(AvahiError):
329
222
pass
330
223
331
224
332
class AvahiService:
225
class AvahiService(object):
333
226
"""An Avahi (Zeroconf) service.
334
227
335
228
Attributes:
336
229
interface: integer; avahi.IF_UNSPEC or an interface index.
337
230
Used to optionally bind to the specified interface.
338
231
name: string; Example: 'Mandos'
339
232
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
233
See <http://www.dns-sd.org/ServiceTypes.html>
341
234
port: integer; what port to announce
342
235
TXT: list of strings; TXT record for the service
343
236
domain: string; Domain to publish on, default to .local if empty.
349
242
server: D-Bus Server
350
243
bus: dbus.SystemBus()
351
244
"""
352
353
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
364
249
self.interface = interface
365
250
self.name = name
366
251
self.type = servicetype
375
260
self.server = None
376
261
self.bus = bus
377
262
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
263
def rename(self):
380
264
"""Derived from the Avahi example code"""
381
265
if self.rename_count >= self.max_renames:
382
266
logger.critical("No suitable Zeroconf service name found"
383
267
" after %i retries, exiting.",
384
268
self.rename_count)
385
269
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
389
272
logger.info("Changing Zeroconf service name to %r ...",
390
273
self.name)
391
if remove:
392
self.remove()
274
self.remove()
393
275
try:
394
276
self.add()
395
277
except dbus.exceptions.DBusException as error:
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
405
282
def remove(self):
406
283
"""Derived from the Avahi example code"""
407
284
if self.entry_group_state_changed_match is not None:
409
286
self.entry_group_state_changed_match = None
410
287
if self.group is not None:
411
288
self.group.Reset()
412
413
289
def add(self):
414
290
"""Derived from the Avahi example code"""
415
291
self.remove()
432
308
dbus.UInt16(self.port),
433
309
avahi.string_array_to_txt_array(self.TXT))
434
310
self.group.Commit()
435
436
311
def entry_group_state_changed(self, state, error):
437
312
"""Derived from the Avahi example code"""
438
313
logger.debug("Avahi entry group state change: %i", state)
439
314
440
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
316
logger.debug("Zeroconf service established.")
442
317
elif state == avahi.ENTRY_GROUP_COLLISION:
444
319
self.rename()
445
320
elif state == avahi.ENTRY_GROUP_FAILURE:
446
321
logger.critical("Avahi: Error in group state changed %s",
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
450
325
def cleanup(self):
451
326
"""Derived from the Avahi example code"""
452
327
if self.group is not None:
457
332
pass
458
333
self.group = None
459
334
self.remove()
460
461
335
def server_state_changed(self, state, error=None):
462
336
"""Derived from the Avahi example code"""
463
337
logger.debug("Avahi server state change: %i", state)
464
bad_states = {
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
469
}
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
470
345
if state in bad_states:
471
346
if bad_states[state] is not None:
472
347
if error is None:
475
350
logger.error(bad_states[state] + ": %r", error)
476
351
self.cleanup()
477
352
elif state == avahi.SERVER_RUNNING:
478
try:
479
self.add()
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
484
" collision.")
485
return self.rename(remove=False)
486
else:
487
logger.critical("D-Bus Exception", exc_info=error)
488
self.cleanup()
489
os._exit(1)
353
self.add()
490
354
else:
491
355
if error is None:
492
356
logger.debug("Unknown state: %r", state)
493
357
else:
494
358
logger.debug("Unknown state: %r: %r", state, error)
495
496
359
def activate(self):
497
360
"""Derived from the Avahi example code"""
498
361
if self.server is None:
502
365
follow_name_owner_changes=True),
503
366
avahi.DBUS_INTERFACE_SERVER)
504
367
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
368
self.server_state_changed)
506
369
self.server_state_changed(self.server.GetState())
507
370
508
509
371
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
372
def rename(self):
511
373
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
.format(self.name)))
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
516
379
return ret
517
380
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
823
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
826
"""
827
connection.send(func(*args, **kwargs))
828
connection.close()
829
830
831
class Client:
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
387
class Client(object):
832
388
"""A representation of a client host served by this server.
833
389
834
390
Attributes:
835
391
approved: bool(); 'None' if not yet approved/disapproved
836
392
approval_delay: datetime.timedelta(); Time to wait for approval
837
393
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
394
checker: subprocess.Popen(); a running checker process used
395
to see if the client lives.
396
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
842
398
checker_command: string; External command which is run to check
843
399
if client lives. %() expansions are done at
844
400
runtime with vars(self) as dict, so that for
845
401
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
402
checker_initiator_tag: a gobject event source tag, or None
847
403
created: datetime.datetime(); (UTC) object creation
848
404
client_structure: Object describing what attributes a client has
849
405
and is used for storing the client at exit
850
406
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
407
disable_initiator_tag: a gobject event source tag, or None
852
408
enabled: bool()
853
409
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
410
uniquely identify the client
857
411
host: string; available for use by the checker command
858
412
interval: datetime.timedelta(); How often to start a new checker
859
413
last_approval_request: datetime.datetime(); (UTC) or None
860
414
last_checked_ok: datetime.datetime(); (UTC) or None
861
415
last_checker_status: integer between 0 and 255 reflecting exit
862
416
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
417
checker, or None.
866
418
last_enabled: datetime.datetime(); (UTC) or None
867
419
name: string; from the config file, used in log messages and
868
420
D-Bus identifiers
869
421
secret: bytestring; sent verbatim (over TLS) to client
870
422
timeout: datetime.timedelta(); How long from last_checked_ok
871
423
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
424
extended_timeout: extra long timeout when password has been sent
873
425
runtime_expansions: Allowed attributes for runtime expansion.
874
426
expires: datetime.datetime(); time (UTC) when a client will be
875
427
disabled, or None
876
server_settings: The server_settings dict from main()
877
428
"""
878
429
879
430
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
883
433
"last_enabled", "name", "timeout")
884
client_defaults = {
885
"timeout": "PT5M",
886
"extended_timeout": "PT15M",
887
"interval": "PT2M",
888
"checker": "fping -q -- %%(host)s",
889
"host": "",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
893
"enabled": "True",
894
}
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
444
445
def timeout_milliseconds(self):
446
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
452
453
def interval_milliseconds(self):
454
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
456
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
895
459
896
460
@staticmethod
897
461
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
462
""" Construct a new dict of client settings of this form:
899
463
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
903
"""
464
with exceptions for any special settings as defined above"""
904
465
settings = {}
905
466
for client_name in config.sections():
906
467
section = dict(config.items(client_name))
907
468
client = settings[client_name] = {}
908
469
909
470
client["host"] = section["host"]
910
471
# Reformat values from string types to Python types
911
472
client["approved_by_default"] = config.getboolean(
912
473
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
914
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
921
476
client["fingerprint"] = (section["fingerprint"].upper()
922
477
.replace(" ", ""))
923
478
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
479
client["secret"] = section["secret"].decode("base64")
927
480
elif "secfile" in section:
928
481
with open(os.path.expanduser(os.path.expandvars
929
482
(section["secfile"])),
930
483
"rb") as secfile:
931
484
client["secret"] = secfile.read()
932
485
else:
933
raise TypeError("No secret or secfile for section {}"
934
.format(section))
486
raise TypeError("No secret or secfile for section %s"
487
% section)
935
488
client["timeout"] = string_to_delta(section["timeout"])
936
489
client["extended_timeout"] = string_to_delta(
937
490
section["extended_timeout"])
943
496
client["checker_command"] = section["checker"]
944
497
client["last_approval_request"] = None
945
498
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
947
507
948
508
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
509
510
511
def __init__(self, settings, name = None):
512
"""Note: the 'checker' key in 'config' sets the
513
'checker_command' attribute and *not* the 'checker'
514
attribute."""
951
515
self.name = name
952
if server_settings is None:
953
server_settings = {}
954
self.server_settings = server_settings
955
516
# adding all client settings
956
for setting, value in settings.items():
517
for setting, value in settings.iteritems():
957
518
setattr(self, setting, value)
958
959
if self.enabled:
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
964
+ self.timeout)
965
else:
966
self.last_enabled = None
967
self.expires = None
968
519
969
520
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
521
# Uppercase and remove spaces from fingerprint for later
522
# comparison purposes with return value from the fingerprint()
523
# function
971
524
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
525
self.created = settings.get("created", datetime.datetime.utcnow())
974
526
975
527
# attributes specific for this server instance
976
528
self.checker = None
980
532
self.current_checker_command = None
981
533
self.approved = None
982
534
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
987
540
if not attr.startswith("_")]
988
541
self.client_structure.append("client_structure")
989
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
992
547
if not name.startswith("_"):
993
548
self.client_structure.append(name)
994
549
995
550
# Send notice to process children that client state has changed
996
551
def send_changedstate(self):
997
552
with self.changedstate:
998
553
self.changedstate.notify_all()
999
554
1000
555
def enable(self):
1001
556
"""Start this client's checker and timeout hooks"""
1002
557
if getattr(self, "enabled", False):
1003
558
# Already enabled
1004
559
return
560
self.send_changedstate()
1005
561
self.expires = datetime.datetime.utcnow() + self.timeout
1006
562
self.enabled = True
1007
563
self.last_enabled = datetime.datetime.utcnow()
1008
564
self.init_checker()
1009
self.send_changedstate()
1010
565
1011
566
def disable(self, quiet=True):
1012
567
"""Disable this client."""
1013
568
if not getattr(self, "enabled", False):
1014
569
return False
1015
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
1016
573
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
1019
576
self.disable_initiator_tag = None
1020
577
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
1023
580
self.checker_initiator_tag = None
1024
581
self.stop_checker()
1025
582
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
583
# Do not run this again if called by a gobject.timeout_add
1029
584
return False
1030
585
1031
586
def __del__(self):
1032
587
self.disable()
1033
588
1034
589
def init_checker(self):
1035
590
# Schedule a new checker to be started an 'interval' from now,
1036
591
# and every interval from then on.
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1041
self.start_checker)
592
self.checker_initiator_tag = (gobject.timeout_add
593
(self.interval_milliseconds(),
594
self.start_checker))
1042
595
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
596
self.disable_initiator_tag = (gobject.timeout_add
597
(self.timeout_milliseconds(),
598
self.disable))
1047
599
# Also start a new checker *right now*.
1048
600
self.start_checker()
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
601
602
def checker_callback(self, pid, condition, command):
1052
603
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
if self.checker is not None:
1057
self.checker.join()
1058
604
self.checker_callback_tag = None
1059
605
self.checker = None
1060
1061
if returncode >= 0:
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
606
if os.WIFEXITED(condition):
607
self.last_checker_status = os.WEXITSTATUS(condition)
1064
608
if self.last_checker_status == 0:
1065
609
logger.info("Checker for %(name)s succeeded",
1066
610
vars(self))
1067
611
self.checked_ok()
1068
612
else:
1069
logger.info("Checker for %(name)s failed", vars(self))
613
logger.info("Checker for %(name)s failed",
614
vars(self))
1070
615
else:
1071
616
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
1073
617
logger.warning("Checker for %(name)s crashed?",
1074
618
vars(self))
1075
return False
1076
1077
def checked_ok(self):
1078
"""Assert that the client has been seen, alive and well."""
1079
self.last_checked_ok = datetime.datetime.utcnow()
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
self.bump_timeout()
1083
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
619
620
def checked_ok(self, timeout=None):
621
"""Bump up the timeout for this client.
622
623
This should only be called when the client has been seen,
624
alive and well.
625
"""
1086
626
if timeout is None:
1087
627
timeout = self.timeout
628
self.last_checked_ok = datetime.datetime.utcnow()
1088
629
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
630
gobject.source_remove(self.disable_initiator_tag)
1091
631
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
1094
635
self.expires = datetime.datetime.utcnow() + timeout
1095
636
1096
637
def need_approval(self):
1097
638
self.last_approval_request = datetime.datetime.utcnow()
1098
639
1099
640
def start_checker(self):
1100
641
"""Start a new checker subprocess if one is not running.
1101
642
1102
643
If a checker already exists, leave it running and do
1103
644
nothing."""
1104
645
# The reason for not killing a running checker is that if we
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
646
# did that, then if a checker (for some reason) started
647
# running slowly and taking more than 'interval' time, the
648
# client would inevitably timeout, since no checker would get
649
# a chance to run to completion. If we instead leave running
1109
650
# checkers alone, the checker would have to take more time
1110
651
# than 'timeout' for the client to be disabled, which is as it
1111
652
# should be.
1112
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1115
self.checker.join()
1116
self.checker = None
653
654
# If a checker exists, make sure it is not a zombie
655
try:
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
657
except (AttributeError, OSError) as error:
658
if (isinstance(error, OSError)
659
and error.errno != errno.ECHILD):
660
raise error
661
else:
662
if pid:
663
logger.warning("Checker was a zombie")
664
gobject.source_remove(self.checker_callback_tag)
665
self.checker_callback(pid, status,
666
self.current_checker_command)
1117
667
# Start a new checker if needed
1118
668
if self.checker is None:
1119
# Escape attributes for the shell
1120
escaped_attrs = {
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
1123
669
try:
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1128
exc_info=error)
1129
return True # Try again later
670
# In case checker_command has exactly one % operator
671
command = self.checker_command % self.host
672
except TypeError:
673
# Escape attributes for the shell
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
682
try:
683
command = self.checker_command % escaped_attrs
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
687
return True # Try again later
1130
688
self.current_checker_command = command
1131
logger.info("Starting checker %r for %s", command,
1132
self.name)
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1139
# created wnull.
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
689
try:
690
logger.info("Starting checker %r for %s",
691
command, self.name)
692
# We don't need to redirect stdout and stderr, since
693
# in normal mode, that is already done by daemon(),
694
# and in debug mode we don't want to. (Stdin is
695
# always replaced by /dev/null.)
696
self.checker = subprocess.Popen(command,
697
close_fds=True,
698
shell=True, cwd="/")
699
self.checker_callback_tag = (gobject.child_watch_add
700
(self.checker.pid,
701
self.checker_callback,
702
data=command))
703
# The checker may have completed before the gobject
704
# watch was added. Check for this.
705
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
706
if pid:
707
gobject.source_remove(self.checker_callback_tag)
708
self.checker_callback(pid, status, command)
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
711
error)
712
# Re-run this periodically if run by gobject.timeout_add
1158
713
return True
1159
714
1160
715
def stop_checker(self):
1161
716
"""Force the checker process, if any, to stop."""
1162
717
if self.checker_callback_tag:
1163
GLib.source_remove(self.checker_callback_tag)
718
gobject.source_remove(self.checker_callback_tag)
1164
719
self.checker_callback_tag = None
1165
720
if getattr(self, "checker", None) is None:
1166
721
return
1167
722
logger.debug("Stopping checker for %(name)s", vars(self))
1168
self.checker.terminate()
723
try:
724
os.kill(self.checker.pid, signal.SIGTERM)
725
#time.sleep(0.5)
726
#if self.checker.poll() is None:
727
# os.kill(self.checker.pid, signal.SIGKILL)
728
except OSError as error:
729
if error.errno != errno.ESRCH: # No such process
730
raise
1169
731
self.checker = None
1170
732
1171
733
1172
def dbus_service_property(dbus_interface,
1173
signature="v",
1174
access="readwrite",
1175
byte_arrays=False):
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
1176
736
"""Decorators for marking methods of a DBusObjectWithProperties to
1177
737
become properties on the D-Bus.
1178
738
1179
739
The decorated method will be called with no arguments by "Get"
1180
740
and with one argument by "Set".
1181
741
1182
742
The parameters, where they are supported, are the same as
1183
743
dbus.service.method, except there is only "signature", since the
1184
744
type from Get() and the type sent to Set() is the same.
1187
747
# "Set" method, so we fail early here:
1188
748
if byte_arrays and signature != "ay":
1189
749
raise ValueError("Byte arrays not supported for non-'ay'"
1190
" signature {!r}".format(signature))
1191
750
" signature %r" % signature)
1192
751
def decorator(func):
1193
752
func._dbus_is_property = True
1194
753
func._dbus_interface = dbus_interface
1197
756
func._dbus_name = func.__name__
1198
757
if func._dbus_name.endswith("_dbus_property"):
1199
758
func._dbus_name = func._dbus_name[:-14]
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1201
return func
1202
1203
return decorator
1204
1205
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1208
1209
Usage:
1210
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
"false"}
1216
"""
1217
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1222
return func
1223
1224
return decorator
1225
1226
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1229
Usage:
1230
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1235
access="r")
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1244
return func
1245
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
760
return func
1246
761
return decorator
1247
762
1248
763
1249
764
class DBusPropertyException(dbus.exceptions.DBusException):
1250
765
"""A base class for D-Bus property-related exceptions
1251
766
"""
1252
pass
767
def __unicode__(self):
768
return unicode(str(self))
1253
769
1254
770
1255
771
class DBusPropertyAccessException(DBusPropertyException):
1264
780
pass
1265
781
1266
782
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1272
"""
1273
1274
@staticmethod
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1277
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1280
"""
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
False)
1283
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1286
"""
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1290
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
783
class DBusObjectWithProperties(dbus.service.Object):
1357
784
"""A D-Bus object with properties.
1358
785
1359
786
Classes inheriting from this can use the dbus_service_property
1360
787
decorator to expose methods as D-Bus properties. It exposes the
1361
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
1362
789
"""
1363
790
791
@staticmethod
792
def _is_dbus_property(obj):
793
return getattr(obj, "_dbus_is_property", False)
794
795
def _get_all_dbus_properties(self):
796
"""Returns a generator of (name, attribute) pairs
797
"""
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
800
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
802
1364
803
def _get_dbus_property(self, interface_name, property_name):
1365
804
"""Returns a bound method if one exists which is a D-Bus
1366
805
property with the specified name and interface.
1367
806
"""
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
1371
810
if (value._dbus_name == property_name
1372
811
and value._dbus_interface == interface_name):
1373
812
return value.__get__(self)
1374
813
1375
814
# No such property
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1389
in_signature="ss",
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
817
+ property_name)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1390
820
out_signature="v")
1391
821
def Get(self, interface_name, property_name):
1392
822
"""Standard D-Bus property Get() method, see D-Bus standard.
1398
828
if not hasattr(value, "variant_level"):
1399
829
return value
1400
830
return type(value)(value, variant_level=value.variant_level+1)
1401
831
1402
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1403
833
def Set(self, interface_name, property_name, value):
1404
834
"""Standard D-Bus property Set() method, see D-Bus standard.
1410
840
# The byte_arrays option is not supported yet on
1411
841
# signatures other than "ay".
1412
842
if prop._dbus_signature != "ay":
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(b''.join(chr(byte)
1417
for byte in value))
843
raise ValueError
844
value = dbus.ByteArray(''.join(unichr(byte)
845
for byte in value))
1418
846
prop(value)
1419
1420
@dbus.service.method(dbus.PROPERTIES_IFACE,
1421
in_signature="s",
847
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1422
849
out_signature="a{sv}")
1423
850
def GetAll(self, interface_name):
1424
851
"""Standard D-Bus property GetAll() method, see D-Bus
1425
852
standard.
1426
853
1427
854
Note: Will not include properties with access="write".
1428
855
"""
1429
856
properties = {}
1430
for name, prop in self._get_all_dbus_things("property"):
857
for name, prop in self._get_all_dbus_properties():
1431
858
if (interface_name
1432
859
and interface_name != prop._dbus_interface):
1433
860
# Interface non-empty but did not match
1439
866
if not hasattr(value, "variant_level"):
1440
867
properties[name] = value
1441
868
continue
1442
properties[name] = type(value)(
1443
value, variant_level=value.variant_level + 1)
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
1444
871
return dbus.Dictionary(properties, signature="sv")
1445
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
def PropertiesChanged(self, interface_name, changed_properties,
1448
invalidated_properties):
1449
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1450
standard.
1451
"""
1452
pass
1453
872
1454
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1455
874
out_signature="s",
1456
875
path_keyword='object_path',
1457
876
connection_keyword='connection')
1458
877
def Introspect(self, object_path, connection):
1459
"""Overloading of standard D-Bus method.
1460
1461
Inserts property tags and interface annotation tags.
878
"""Standard D-Bus method, overloaded to insert property tags.
1462
879
"""
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1464
object_path,
1465
connection)
880
xmlstring = dbus.service.Object.Introspect(self, object_path,
881
connection)
1466
882
try:
1467
883
document = xml.dom.minidom.parseString(xmlstring)
1468
1469
884
def make_tag(document, name, prop):
1470
885
e = document.createElement("property")
1471
886
e.setAttribute("name", name)
1472
887
e.setAttribute("type", prop._dbus_signature)
1473
888
e.setAttribute("access", prop._dbus_access)
1474
889
return e
1475
1476
890
for if_tag in document.getElementsByTagName("interface"):
1477
# Add property tags
1478
891
for tag in (make_tag(document, name, prop)
1479
892
for name, prop
1480
in self._get_all_dbus_things("property")
893
in self._get_all_dbus_properties()
1481
894
if prop._dbus_interface
1482
895
== if_tag.getAttribute("name")):
1483
896
if_tag.appendChild(tag)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1486
annots = dict()
1487
for name, prop in self._get_all_dbus_things(
1488
"property"):
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1496
"annotation")
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
1500
897
# Add the names to the return values for the
1501
898
# "org.freedesktop.DBus.Properties" methods
1502
899
if (if_tag.getAttribute("name")
1517
914
except (AttributeError, xml.dom.DOMException,
1518
915
xml.parsers.expat.ExpatError) as error:
1519
916
logger.error("Failed to override Introspection method",
1520
exc_info=error)
1521
return xmlstring
1522
1523
1524
try:
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1528
1529
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1532
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1537
1538
Note: No signals are sent automatically; they must be sent
1539
manually.
1540
"""
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1546
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1550
pass
1551
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1554
pass
1555
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
out_signature="s",
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1562
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1565
"""
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1567
object_path,
1568
connection)
1569
try:
1570
document = xml.dom.minidom.parseString(xmlstring)
1571
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute(
1583
"name",
1584
"objpath_interfaces"
1585
"_and_properties")
1586
xmlstring = document.toxml("utf-8")
1587
document.unlink()
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1591
exc_info=error)
1592
return xmlstring
1593
1594
1595
def datetime_to_dbus(dt, variant_level=0):
917
error)
918
return xmlstring
919
920
921
def datetime_to_dbus (dt, variant_level=0):
1596
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
923
if dt is None:
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1600
1601
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1606
Usage:
1607
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1613
pass
1614
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1620
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
1624
933
"""
1625
1626
def wrapper(cls):
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1629
attr = {}
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
1633
941
# Ignore non-D-Bus attributes, and D-Bus attributes
1634
942
# with the wrong interface name
1635
943
if (not hasattr(attribute, "_dbus_interface")
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
1638
946
continue
1639
947
# Create an alternate D-Bus interface name based on
1640
948
# the current name
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
1644
952
# Is this a D-Bus signal?
1645
953
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
1650
957
zip(attribute.func_code.co_freevars,
1651
attribute.__closure__))
1652
["func"].cell_contents)
1653
else:
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
958
attribute.__closure__))["func"]
959
.cell_contents)
1658
960
# Create a new, but exactly alike, function
1659
961
# object, and decorate it to be a new D-Bus signal
1660
962
# with the alternate D-Bus interface name
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1663
alt_interface,
1664
attribute._dbus_signature)(new_function))
1665
# Copy annotations, if any
1666
try:
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1669
except AttributeError:
1670
pass
1671
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
1672
972
# Define a creator of a function to call both the
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
1676
975
def fixscope(func1, func2):
1677
976
"""This function is a scope container to pass
1678
977
func1 and func2 to the "call_both" function
1679
978
outside of its arguments"""
1680
1681
@functools.wraps(func2)
1682
979
def call_both(*args, **kwargs):
1683
980
"""This function will emit two D-Bus
1684
981
signals by calling func1 and func2"""
1685
982
func1(*args, **kwargs)
1686
983
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1688
# signal
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1692
1693
984
return call_both
1694
985
# Create the "call_both" function and add it to
1695
986
# the class
1696
attr[attrname] = fixscope(attribute, new_function)
987
attr[attrname] = fixscope(attribute,
988
new_function)
1697
989
# Is this a D-Bus method?
1698
990
elif getattr(attribute, "_dbus_is_method", False):
1699
991
# Create a new, but exactly alike, function
1700
992
# object. Decorate it to be a new D-Bus method
1701
993
# with the alternate D-Bus interface name. Add it
1702
994
# to the class.
1703
attr[attrname] = (
1704
dbus.service.method(
1705
alt_interface,
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1709
# Copy annotations, if any
1710
try:
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1714
pass
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1715
1005
# Is this a D-Bus property?
1716
1006
elif getattr(attribute, "_dbus_is_property", False):
1717
1007
# Create a new, but exactly alike, function
1718
1008
# object, and decorate it to be a new D-Bus
1719
1009
# property with the alternate D-Bus interface
1720
1010
# name. Add it to the class.
1721
attr[attrname] = (dbus_service_property(
1722
alt_interface, attribute._dbus_signature,
1723
attribute._dbus_access,
1724
attribute._dbus_get_args_options
1725
["byte_arrays"])
1726
(copy_function(attribute)))
1727
# Copy annotations, if any
1728
try:
1729
attr[attrname]._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1732
pass
1733
# Is this a D-Bus interface?
1734
elif getattr(attribute, "_dbus_is_interface", False):
1735
# Create a new, but exactly alike, function
1736
# object. Decorate it to be a new D-Bus interface
1737
# with the alternate D-Bus interface name. Add it
1738
# to the class.
1739
attr[attrname] = (
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1742
if deprecate:
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1746
1747
@dbus_interface_annotations(interface_name)
1748
def func(self):
1749
return {"org.freedesktop.DBus.Deprecated":
1750
"true"}
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1755
attr[aname] = func
1756
break
1757
if interface_names:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
else:
1764
cls = type("{}Alternate".format(cls.__name__),
1765
(cls, ), attr)
1766
return cls
1767
1768
return wrapper
1769
1770
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
1773
1027
class ClientDBus(Client, DBusObjectWithProperties):
1774
1028
"""A Client class using D-Bus
1775
1029
1776
1030
Attributes:
1777
1031
dbus_object_path: dbus.ObjectPath
1778
1032
bus: dbus.SystemBus()
1779
1033
"""
1780
1034
1781
1035
runtime_expansions = (Client.runtime_expansions
1782
+ ("dbus_object_path", ))
1783
1784
_interface = "se.recompile.Mandos.Client"
1785
1036
+ ("dbus_object_path",))
1037
1786
1038
# dbus.service.Object doesn't use super(), so we can't either.
1787
1788
def __init__(self, bus=None, *args, **kwargs):
1039
1040
def __init__(self, bus = None, *args, **kwargs):
1789
1041
self.bus = bus
1790
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
1791
1046
# Only now, when this client is initialized, can it show up on
1792
1047
# the D-Bus
1793
client_object_name = str(self.name).translate(
1048
client_object_name = unicode(self.name).translate(
1794
1049
{ord("."): ord("_"),
1795
1050
ord("-"): ord("_")})
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
1051
self.dbus_object_path = (dbus.ObjectPath
1052
("/clients/" + client_object_name))
1798
1053
DBusObjectWithProperties.__init__(self, self.bus,
1799
1054
self.dbus_object_path)
1800
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1803
variant_level=1,
1804
invalidate_only=False,
1805
_interface=_interface):
1055
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1806
1059
""" Modify a variable so that it's a property which announces
1807
1060
its changes to DBus.
1808
1061
1809
1062
transform_fun: Function that takes a value and a variant_level
1810
1063
and transforms it to a D-Bus type.
1811
1064
dbus_name: D-Bus name of the variable
1813
1066
to the D-Bus. Default: no transform
1814
1067
variant_level: D-Bus variant level. Default: 1
1815
1068
"""
1816
attrname = "_{}".format(dbus_name)
1817
1069
attrname = "_{0}".format(dbus_name)
1818
1070
def setter(self, value):
1819
1071
if hasattr(self, "dbus_object_path"):
1820
1072
if (not hasattr(self, attrname) or
1821
1073
type_func(getattr(self, attrname, None))
1822
1074
!= type_func(value)):
1823
if invalidate_only:
1824
self.PropertiesChanged(
1825
_interface, dbus.Dictionary(),
1826
dbus.Array((dbus_name, )))
1827
else:
1828
dbus_value = transform_func(
1829
type_func(value),
1830
variant_level=variant_level)
1831
self.PropertyChanged(dbus.String(dbus_name),
1832
dbus_value)
1833
self.PropertiesChanged(
1834
_interface,
1835
dbus.Dictionary({dbus.String(dbus_name):
1836
dbus_value}),
1837
dbus.Array())
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1838
1080
setattr(self, attrname, value)
1839
1081
1840
1082
return property(lambda self: getattr(self, attrname), setter)
1841
1083
1084
1842
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1843
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1844
1087
"ApprovalPending",
1845
type_func=bool)
1088
type_func = bool)
1846
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1847
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1848
1091
"LastEnabled")
1849
checker = notifychangeproperty(
1850
dbus.Boolean, "CheckerRunning",
1851
type_func=lambda checker: checker is not None)
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1852
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1853
1096
"LastCheckedOK")
1854
last_checker_status = notifychangeproperty(dbus.Int16,
1855
"LastCheckerStatus")
1856
1097
last_approval_request = notifychangeproperty(
1857
1098
datetime_to_dbus, "LastApprovalRequest")
1858
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1859
1100
"ApprovedByDefault")
1860
approval_delay = notifychangeproperty(
1861
dbus.UInt64, "ApprovalDelay",
1862
type_func=lambda td: td.total_seconds() * 1000)
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1863
1105
approval_duration = notifychangeproperty(
1864
1106
dbus.UInt64, "ApprovalDuration",
1865
type_func=lambda td: td.total_seconds() * 1000)
1107
type_func = timedelta_to_milliseconds)
1866
1108
host = notifychangeproperty(dbus.String, "Host")
1867
timeout = notifychangeproperty(
1868
dbus.UInt64, "Timeout",
1869
type_func=lambda td: td.total_seconds() * 1000)
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1870
1112
extended_timeout = notifychangeproperty(
1871
1113
dbus.UInt64, "ExtendedTimeout",
1872
type_func=lambda td: td.total_seconds() * 1000)
1873
interval = notifychangeproperty(
1874
dbus.UInt64, "Interval",
1875
type_func=lambda td: td.total_seconds() * 1000)
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1876
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1877
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1878
invalidate_only=True)
1879
1120
1880
1121
del notifychangeproperty
1881
1122
1882
1123
def __del__(self, *args, **kwargs):
1883
1124
try:
1884
1125
self.remove_from_connection()
1887
1128
if hasattr(DBusObjectWithProperties, "__del__"):
1888
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1889
1130
Client.__del__(self, *args, **kwargs)
1890
1891
def checker_callback(self, source, condition,
1892
connection, command, *args, **kwargs):
1893
ret = Client.checker_callback(self, source, condition,
1894
connection, command, *args,
1895
**kwargs)
1896
exitstatus = self.last_checker_status
1897
if exitstatus >= 0:
1131
1132
def checker_callback(self, pid, condition, command,
1133
*args, **kwargs):
1134
self.checker_callback_tag = None
1135
self.checker = None
1136
if os.WIFEXITED(condition):
1137
exitstatus = os.WEXITSTATUS(condition)
1898
1138
# Emit D-Bus signal
1899
1139
self.CheckerCompleted(dbus.Int16(exitstatus),
1900
# This is specific to GNU libC
1901
dbus.Int64(exitstatus << 8),
1140
dbus.Int64(condition),
1902
1141
dbus.String(command))
1903
1142
else:
1904
1143
# Emit D-Bus signal
1905
1144
self.CheckerCompleted(dbus.Int16(-1),
1906
dbus.Int64(
1907
# This is specific to GNU libC
1908
(exitstatus << 8)
1909
| self.last_checker_signal),
1145
dbus.Int64(condition),
1910
1146
dbus.String(command))
1911
return ret
1912
1147
1148
return Client.checker_callback(self, pid, condition, command,
1149
*args, **kwargs)
1150
1913
1151
def start_checker(self, *args, **kwargs):
1914
old_checker_pid = getattr(self.checker, "pid", None)
1152
old_checker = self.checker
1153
if self.checker is not None:
1154
old_checker_pid = self.checker.pid
1155
else:
1156
old_checker_pid = None
1915
1157
r = Client.start_checker(self, *args, **kwargs)
1916
1158
# Only if new checker process was started
1917
1159
if (self.checker is not None
1919
1161
# Emit D-Bus signal
1920
1162
self.CheckerStarted(self.current_checker_command)
1921
1163
return r
1922
1164
1923
1165
def _reset_approved(self):
1924
1166
self.approved = None
1925
1167
return False
1926
1168
1927
1169
def approve(self, value=True):
1170
self.send_changedstate()
1928
1171
self.approved = value
1929
GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
* 1000), self._reset_approved)
1931
self.send_changedstate()
1932
1933
# D-Bus methods, signals & properties
1934
1935
# Interfaces
1936
1937
# Signals
1938
1172
gobject.timeout_add(timedelta_to_milliseconds
1173
(self.approval_duration),
1174
self._reset_approved)
1175
1176
1177
## D-Bus methods, signals & properties
1178
_interface = "se.recompile.Mandos.Client"
1179
1180
## Signals
1181
1939
1182
# CheckerCompleted - signal
1940
1183
@dbus.service.signal(_interface, signature="nxs")
1941
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
1942
1185
"D-Bus signal"
1943
1186
pass
1944
1187
1945
1188
# CheckerStarted - signal
1946
1189
@dbus.service.signal(_interface, signature="s")
1947
1190
def CheckerStarted(self, command):
1948
1191
"D-Bus signal"
1949
1192
pass
1950
1193
1951
1194
# PropertyChanged - signal
1952
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1953
1195
@dbus.service.signal(_interface, signature="sv")
1954
1196
def PropertyChanged(self, property, value):
1955
1197
"D-Bus signal"
1956
1198
pass
1957
1199
1958
1200
# GotSecret - signal
1959
1201
@dbus.service.signal(_interface)
1960
1202
def GotSecret(self):
1963
1205
server to mandos-client
1964
1206
"""
1965
1207
pass
1966
1208
1967
1209
# Rejected - signal
1968
1210
@dbus.service.signal(_interface, signature="s")
1969
1211
def Rejected(self, reason):
1970
1212
"D-Bus signal"
1971
1213
pass
1972
1214
1973
1215
# NeedApproval - signal
1974
1216
@dbus.service.signal(_interface, signature="tb")
1975
1217
def NeedApproval(self, timeout, default):
1976
1218
"D-Bus signal"
1977
1219
return self.need_approval()
1978
1979
# Methods
1980
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
1227
pass
1228
1229
## Methods
1230
1981
1231
# Approve - method
1982
1232
@dbus.service.method(_interface, in_signature="b")
1983
1233
def Approve(self, value):
1984
1234
self.approve(value)
1985
1235
1986
1236
# CheckedOK - method
1987
1237
@dbus.service.method(_interface)
1988
1238
def CheckedOK(self):
1989
1239
self.checked_ok()
1990
1240
1991
1241
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1993
1242
@dbus.service.method(_interface)
1994
1243
def Enable(self):
1995
1244
"D-Bus method"
1996
1245
self.enable()
1997
1246
1998
1247
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2000
1248
@dbus.service.method(_interface)
2001
1249
def StartChecker(self):
2002
1250
"D-Bus method"
2003
1251
self.start_checker()
2004
1252
2005
1253
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2007
1254
@dbus.service.method(_interface)
2008
1255
def Disable(self):
2009
1256
"D-Bus method"
2010
1257
self.disable()
2011
1258
2012
1259
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2014
1260
@dbus.service.method(_interface)
2015
1261
def StopChecker(self):
2016
1262
self.stop_checker()
2017
2018
# Properties
2019
1263
1264
## Properties
1265
2020
1266
# ApprovalPending - property
2021
1267
@dbus_service_property(_interface, signature="b", access="read")
2022
1268
def ApprovalPending_dbus_property(self):
2023
1269
return dbus.Boolean(bool(self.approvals_pending))
2024
1270
2025
1271
# ApprovedByDefault - property
2026
@dbus_service_property(_interface,
2027
signature="b",
1272
@dbus_service_property(_interface, signature="b",
2028
1273
access="readwrite")
2029
1274
def ApprovedByDefault_dbus_property(self, value=None):
2030
1275
if value is None: # get
2031
1276
return dbus.Boolean(self.approved_by_default)
2032
1277
self.approved_by_default = bool(value)
2033
1278
2034
1279
# ApprovalDelay - property
2035
@dbus_service_property(_interface,
2036
signature="t",
1280
@dbus_service_property(_interface, signature="t",
2037
1281
access="readwrite")
2038
1282
def ApprovalDelay_dbus_property(self, value=None):
2039
1283
if value is None: # get
2040
return dbus.UInt64(self.approval_delay.total_seconds()
2041
* 1000)
1284
return dbus.UInt64(self.approval_delay_milliseconds())
2042
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2043
1286
2044
1287
# ApprovalDuration - property
2045
@dbus_service_property(_interface,
2046
signature="t",
1288
@dbus_service_property(_interface, signature="t",
2047
1289
access="readwrite")
2048
1290
def ApprovalDuration_dbus_property(self, value=None):
2049
1291
if value is None: # get
2050
return dbus.UInt64(self.approval_duration.total_seconds()
2051
* 1000)
1292
return dbus.UInt64(timedelta_to_milliseconds(
1293
self.approval_duration))
2052
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2053
1295
2054
1296
# Name - property
2055
@dbus_annotations(
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
1297
@dbus_service_property(_interface, signature="s", access="read")
2058
1298
def Name_dbus_property(self):
2059
1299
return dbus.String(self.name)
2060
2061
# KeyID - property
2062
@dbus_annotations(
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2067
1300
2068
1301
# Fingerprint - property
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
1302
@dbus_service_property(_interface, signature="s", access="read")
2072
1303
def Fingerprint_dbus_property(self):
2073
1304
return dbus.String(self.fingerprint)
2074
1305
2075
1306
# Host - property
2076
@dbus_service_property(_interface,
2077
signature="s",
1307
@dbus_service_property(_interface, signature="s",
2078
1308
access="readwrite")
2079
1309
def Host_dbus_property(self, value=None):
2080
1310
if value is None: # get
2081
1311
return dbus.String(self.host)
2082
self.host = str(value)
2083
1312
self.host = unicode(value)
1313
2084
1314
# Created - property
2085
@dbus_annotations(
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
1315
@dbus_service_property(_interface, signature="s", access="read")
2088
1316
def Created_dbus_property(self):
2089
1317
return datetime_to_dbus(self.created)
2090
1318
2091
1319
# LastEnabled - property
2092
1320
@dbus_service_property(_interface, signature="s", access="read")
2093
1321
def LastEnabled_dbus_property(self):
2094
1322
return datetime_to_dbus(self.last_enabled)
2095
1323
2096
1324
# Enabled - property
2097
@dbus_service_property(_interface,
2098
signature="b",
1325
@dbus_service_property(_interface, signature="b",
2099
1326
access="readwrite")
2100
1327
def Enabled_dbus_property(self, value=None):
2101
1328
if value is None: # get
2104
1331
self.enable()
2105
1332
else:
2106
1333
self.disable()
2107
1334
2108
1335
# LastCheckedOK - property
2109
@dbus_service_property(_interface,
2110
signature="s",
1336
@dbus_service_property(_interface, signature="s",
2111
1337
access="readwrite")
2112
1338
def LastCheckedOK_dbus_property(self, value=None):
2113
1339
if value is not None:
2114
1340
self.checked_ok()
2115
1341
return
2116
1342
return datetime_to_dbus(self.last_checked_ok)
2117
2118
# LastCheckerStatus - property
2119
@dbus_service_property(_interface, signature="n", access="read")
2120
def LastCheckerStatus_dbus_property(self):
2121
return dbus.Int16(self.last_checker_status)
2122
1343
2123
1344
# Expires - property
2124
1345
@dbus_service_property(_interface, signature="s", access="read")
2125
1346
def Expires_dbus_property(self):
2126
1347
return datetime_to_dbus(self.expires)
2127
1348
2128
1349
# LastApprovalRequest - property
2129
1350
@dbus_service_property(_interface, signature="s", access="read")
2130
1351
def LastApprovalRequest_dbus_property(self):
2131
1352
return datetime_to_dbus(self.last_approval_request)
2132
1353
2133
1354
# Timeout - property
2134
@dbus_service_property(_interface,
2135
signature="t",
1355
@dbus_service_property(_interface, signature="t",
2136
1356
access="readwrite")
2137
1357
def Timeout_dbus_property(self, value=None):
2138
1358
if value is None: # get
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
1359
return dbus.UInt64(self.timeout_milliseconds())
2141
1360
self.timeout = datetime.timedelta(0, 0, 0, value)
2142
# Reschedule disabling
2143
if self.enabled:
2144
now = datetime.datetime.utcnow()
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
2147
# The timeout has passed
2148
self.disable()
2149
else:
2150
if (getattr(self, "disable_initiator_tag", None)
2151
is None):
2152
return
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
2156
self.disable)
2157
1361
if getattr(self, "disable_initiator_tag", None) is None:
1362
return
1363
# Reschedule timeout
1364
gobject.source_remove(self.disable_initiator_tag)
1365
self.disable_initiator_tag = None
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1372
if time_to_die <= 0:
1373
# The timeout has passed
1374
self.disable()
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1379
self.disable_initiator_tag = (gobject.timeout_add
1380
(time_to_die, self.disable))
1381
2158
1382
# ExtendedTimeout - property
2159
@dbus_service_property(_interface,
2160
signature="t",
1383
@dbus_service_property(_interface, signature="t",
2161
1384
access="readwrite")
2162
1385
def ExtendedTimeout_dbus_property(self, value=None):
2163
1386
if value is None: # get
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
2165
* 1000)
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
2166
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
1389
2168
1390
# Interval - property
2169
@dbus_service_property(_interface,
2170
signature="t",
1391
@dbus_service_property(_interface, signature="t",
2171
1392
access="readwrite")
2172
1393
def Interval_dbus_property(self, value=None):
2173
1394
if value is None: # get
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1395
return dbus.UInt64(self.interval_milliseconds())
2175
1396
self.interval = datetime.timedelta(0, 0, 0, value)
2176
1397
if getattr(self, "checker_initiator_tag", None) is None:
2177
1398
return
2178
1399
if self.enabled:
2179
1400
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
2184
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
2185
1406
# Checker - property
2186
@dbus_service_property(_interface,
2187
signature="s",
1407
@dbus_service_property(_interface, signature="s",
2188
1408
access="readwrite")
2189
1409
def Checker_dbus_property(self, value=None):
2190
1410
if value is None: # get
2191
1411
return dbus.String(self.checker_command)
2192
self.checker_command = str(value)
2193
1412
self.checker_command = unicode(value)
1413
2194
1414
# CheckerRunning - property
2195
@dbus_service_property(_interface,
2196
signature="b",
1415
@dbus_service_property(_interface, signature="b",
2197
1416
access="readwrite")
2198
1417
def CheckerRunning_dbus_property(self, value=None):
2199
1418
if value is None: # get
2202
1421
self.start_checker()
2203
1422
else:
2204
1423
self.stop_checker()
2205
1424
2206
1425
# ObjectPath - property
2207
@dbus_annotations(
2208
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
"org.freedesktop.DBus.Deprecated": "true"})
2210
1426
@dbus_service_property(_interface, signature="o", access="read")
2211
1427
def ObjectPath_dbus_property(self):
2212
return self.dbus_object_path # is already a dbus.ObjectPath
2213
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1429
2214
1430
# Secret = property
2215
@dbus_annotations(
2216
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
"invalidates"})
2218
@dbus_service_property(_interface,
2219
signature="ay",
2220
access="write",
2221
byte_arrays=True)
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
2222
1433
def Secret_dbus_property(self, value):
2223
self.secret = bytes(value)
2224
1434
self.secret = str(value)
1435
2225
1436
del _interface
2226
1437
2227
1438
2228
class ProxyClient:
2229
def __init__(self, child_pipe, key_id, fpr, address):
1439
class ProxyClient(object):
1440
def __init__(self, child_pipe, fpr, address):
2230
1441
self._pipe = child_pipe
2231
self._pipe.send(('init', key_id, fpr, address))
1442
self._pipe.send(('init', fpr, address))
2232
1443
if not self._pipe.recv():
2233
raise KeyError(key_id or fpr)
2234
1444
raise KeyError()
1445
2235
1446
def __getattribute__(self, name):
2236
1447
if name == '_pipe':
2237
1448
return super(ProxyClient, self).__getattribute__(name)
2240
1451
if data[0] == 'data':
2241
1452
return data[1]
2242
1453
if data[0] == 'function':
2243
2244
1454
def func(*args, **kwargs):
2245
1455
self._pipe.send(('funcall', name, args, kwargs))
2246
1456
return self._pipe.recv()[1]
2247
2248
1457
return func
2249
1458
2250
1459
def __setattr__(self, name, value):
2251
1460
if name == '_pipe':
2252
1461
return super(ProxyClient, self).__setattr__(name, value)
2253
1462
self._pipe.send(('setattr', name, value))
2254
1463
2255
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
2256
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
2257
1470
"""A class to handle client connections.
2258
1471
2259
1472
Instantiated once for each connection to handle it.
2260
1473
Note: This will run in its own forked process."""
2261
1474
2262
1475
def handle(self):
2263
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
2264
1477
logger.info("TCP connection from: %s",
2265
str(self.client_address))
1478
unicode(self.client_address))
2266
1479
logger.debug("Pipe FD: %d",
2267
1480
self.server.child_pipe.fileno())
2268
2269
session = gnutls.ClientSession(self.request)
2270
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
# "+DHE-DSS"))
1481
1482
session = (gnutls.connection
1483
.ClientSession(self.request,
1484
gnutls.connection
1485
.X509Credentials()))
1486
1487
# Note: gnutls.connection.X509Credentials is really a
1488
# generic GnuTLS certificate credentials object so long as
1489
# no X.509 keys are added to it. Therefore, we can use it
1490
# here despite using OpenPGP certificates.
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
2275
1496
# Use a fallback default, since this MUST be set.
2276
1497
priority = self.server.gnutls_priority
2277
1498
if priority is None:
2278
1499
priority = "NORMAL"
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
2281
None)
2282
1500
(gnutls.library.functions
1501
.gnutls_priority_set_direct(session._c_object,
1502
priority, None))
1503
2283
1504
# Start communication using the Mandos protocol
2284
1505
# Get protocol number
2285
1506
line = self.request.makefile().readline()
2286
1507
logger.debug("Protocol version: %r", line)
2287
1508
try:
2288
1509
if int(line.strip().split()[0]) > 1:
2289
raise RuntimeError(line)
1510
raise RuntimeError
2290
1511
except (ValueError, IndexError, RuntimeError) as error:
2291
1512
logger.error("Unknown protocol version: %s", error)
2292
1513
return
2293
1514
2294
1515
# Start GnuTLS connection
2295
1516
try:
2296
1517
session.handshake()
2297
except gnutls.Error as error:
1518
except gnutls.errors.GNUTLSError as error:
2298
1519
logger.warning("Handshake failed: %s", error)
2299
1520
# Do not run session.bye() here: the session is not
2300
1521
# established. Just abandon the request.
2301
1522
return
2302
1523
logger.debug("Handshake succeeded")
2303
1524
2304
1525
approval_required = False
2305
1526
try:
2306
if gnutls.has_rawpk:
2307
fpr = b""
2308
try:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2313
return
2314
logger.debug("Key ID: %s", key_id)
2315
2316
else:
2317
key_id = b""
2318
try:
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2323
return
2324
logger.debug("Fingerprint: %s", fpr)
2325
2326
try:
2327
client = ProxyClient(child_pipe, key_id, fpr,
1527
try:
1528
fpr = self.fingerprint(self.peer_certificate
1529
(session))
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1533
return
1534
logger.debug("Fingerprint: %s", fpr)
1535
1536
try:
1537
client = ProxyClient(child_pipe, fpr,
2328
1538
self.client_address)
2329
1539
except KeyError:
2330
1540
return
2331
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
2332
1546
if client.approval_delay:
2333
1547
delay = client.approval_delay
2334
1548
client.approvals_pending += 1
2335
1549
approval_required = True
2336
1550
2337
1551
while True:
2338
1552
if not client.enabled:
2339
1553
logger.info("Client %s is disabled",
2340
client.name)
1554
client.name)
2341
1555
if self.server.use_dbus:
2342
1556
# Emit D-Bus signal
2343
1557
client.Rejected("Disabled")
2344
1558
return
2345
1559
2346
1560
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
1561
#We are approved or approval is disabled
2348
1562
break
2349
1563
elif client.approved is None:
2350
1564
logger.info("Client %s needs approval",
2352
1566
if self.server.use_dbus:
2353
1567
# Emit D-Bus signal
2354
1568
client.NeedApproval(
2355
client.approval_delay.total_seconds()
2356
* 1000, client.approved_by_default)
1569
client.approval_delay_milliseconds(),
1570
client.approved_by_default)
2357
1571
else:
2358
1572
logger.warning("Client %s was not approved",
2359
1573
client.name)
2361
1575
# Emit D-Bus signal
2362
1576
client.Rejected("Denied")
2363
1577
return
2364
2365
# wait until timeout or approved
1578
1579
#wait until timeout or approved
2366
1580
time = datetime.datetime.now()
2367
1581
client.changedstate.acquire()
2368
client.changedstate.wait(delay.total_seconds())
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
2369
1585
client.changedstate.release()
2370
1586
time2 = datetime.datetime.now()
2371
1587
if (time2 - time) >= delay:
2381
1597
break
2382
1598
else:
2383
1599
delay -= time2 - time
2384
2385
try:
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
2389
exc_info=error)
2390
return
2391
1600
1601
sent_size = 0
1602
while sent_size < len(client.secret):
1603
try:
1604
sent = session.send(client.secret[sent_size:])
1605
except gnutls.errors.GNUTLSError as error:
1606
logger.warning("gnutls send failed")
1607
return
1608
logger.debug("Sent: %d, remaining: %d",
1609
sent, len(client.secret)
1610
- (sent_size + sent))
1611
sent_size += sent
1612
2392
1613
logger.info("Sending secret to %s", client.name)
2393
1614
# bump the timeout using extended_timeout
2394
client.bump_timeout(client.extended_timeout)
1615
client.checked_ok(client.extended_timeout)
2395
1616
if self.server.use_dbus:
2396
1617
# Emit D-Bus signal
2397
1618
client.GotSecret()
2398
1619
2399
1620
finally:
2400
1621
if approval_required:
2401
1622
client.approvals_pending -= 1
2402
1623
try:
2403
1624
session.bye()
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
2406
exc_info=error)
2407
1625
except gnutls.errors.GNUTLSError as error:
1626
logger.warning("GnuTLS bye failed")
1627
2408
1628
@staticmethod
2409
1629
def peer_certificate(session):
2410
"Return the peer's certificate as a bytestring"
2411
try:
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
gnutls.CTYPE_PEERS)
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
else:
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2423
valid_cert_types)
2424
# ...return invalid data
2425
return b""
1630
"Return the peer's OpenPGP certificate as a bytestring"
1631
# If not an OpenPGP certificate...
1632
if (gnutls.library.functions
1633
.gnutls_certificate_type_get(session._c_object)
1634
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1635
# ...do the normal thing
1636
return session.peer_certificate
2426
1637
list_size = ctypes.c_uint(1)
2427
cert_list = (gnutls.certificate_get_peers
1638
cert_list = (gnutls.library.functions
1639
.gnutls_certificate_get_peers
2428
1640
(session._c_object, ctypes.byref(list_size)))
2429
1641
if not bool(cert_list) and list_size.value != 0:
2430
raise gnutls.Error("error getting peer certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
2431
1644
if list_size.value == 0:
2432
1645
return None
2433
1646
cert = cert_list[0]
2434
1647
return ctypes.string_at(cert.data, cert.size)
2435
2436
@staticmethod
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2463
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2468
return hex_key_id
2469
1648
2470
1649
@staticmethod
2471
1650
def fingerprint(openpgp):
2472
1651
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2473
1652
# New GnuTLS "datum" with the OpenPGP public key
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
1653
datum = (gnutls.library.types
1654
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1655
ctypes.POINTER
1656
(ctypes.c_ubyte)),
1657
ctypes.c_uint(len(openpgp))))
2478
1658
# New empty GnuTLS certificate
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1659
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1660
(gnutls.library.functions
1661
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2481
1662
# Import the OpenPGP public key into the certificate
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1663
(gnutls.library.functions
1664
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1665
gnutls.library.constants
1666
.GNUTLS_OPENPGP_FMT_RAW))
2484
1667
# Verify the self signature in the key
2485
1668
crtverify = ctypes.c_uint()
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1669
(gnutls.library.functions
1670
.gnutls_openpgp_crt_verify_self(crt, 0,
1671
ctypes.byref(crtverify)))
2488
1672
if crtverify.value != 0:
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
2491
=crtverify.value)
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1674
raise (gnutls.errors.CertificateSecurityError
1675
("Verify failed"))
2492
1676
# New buffer for the fingerprint
2493
1677
buf = ctypes.create_string_buffer(20)
2494
1678
buf_len = ctypes.c_size_t()
2495
1679
# Get the fingerprint from the certificate into the buffer
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1680
(gnutls.library.functions
1681
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1682
ctypes.byref(buf_len)))
2498
1683
# Deinit the certificate
2499
gnutls.openpgp_crt_deinit(crt)
1684
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2500
1685
# Convert the buffer to a Python bytestring
2501
1686
fpr = ctypes.string_at(buf, buf_len.value)
2502
1687
# Convert the bytestring to hexadecimal notation
2504
1689
return hex_fpr
2505
1690
2506
1691
2507
class MultiprocessingMixIn:
1692
class MultiprocessingMixIn(object):
2508
1693
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
2510
1694
def sub_process_main(self, request, address):
2511
1695
try:
2512
1696
self.finish_request(request, address)
2513
1697
except Exception:
2514
1698
self.handle_error(request, address)
2515
1699
self.close_request(request)
2516
1700
2517
1701
def process_request(self, request, address):
2518
1702
"""Start a new process to process the request."""
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
2521
1706
proc.start()
2522
1707
return proc
2523
1708
2524
1709
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2526
1711
""" adds a pipe to the MixIn """
2527
2528
1712
def process_request(self, request, client_address):
2529
1713
"""Overrides and wraps the original process_request().
2530
1714
2531
1715
This function creates a new pipe in self.pipe
2532
1716
"""
2533
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
1718
2535
1719
proc = MultiprocessingMixIn.process_request(self, request,
2536
1720
client_address)
2537
1721
self.child_pipe.close()
2538
1722
self.add_pipe(parent_pipe, proc)
2539
1723
2540
1724
def add_pipe(self, parent_pipe, proc):
2541
1725
"""Dummy function; override as necessary"""
2542
raise NotImplementedError()
1726
raise NotImplementedError
2543
1727
2544
1728
2545
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2546
socketserver.TCPServer):
1730
socketserver.TCPServer, object):
2547
1731
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2548
1732
2549
1733
Attributes:
2550
1734
enabled: Boolean; whether this server is activated yet
2551
1735
interface: None or a network interface name (string)
2552
1736
use_ipv6: Boolean; to use IPv6 or not
2553
1737
"""
2554
2555
1738
def __init__(self, server_address, RequestHandlerClass,
2556
interface=None,
2557
use_ipv6=True,
2558
socketfd=None):
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
2561
"""
1739
interface=None, use_ipv6=True):
2562
1740
self.interface = interface
2563
1741
if use_ipv6:
2564
1742
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2570
2571
# To implement --socket, we monkey patch socket.socket.
2572
#
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2576
#
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2581
# not affected.
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
2592
1743
socketserver.TCPServer.__init__(self, server_address,
2593
1744
RequestHandlerClass)
2594
2595
1745
def server_bind(self):
2596
1746
"""This overrides the normal server_bind() function
2597
1747
to bind to an interface if one was specified, and also NOT to
2598
1748
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
2600
1749
if self.interface is not None:
2601
1750
if SO_BINDTODEVICE is None:
2602
# Fall back to a hard-coded value which seems to be
2603
# common enough.
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2606
try:
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2617
self.interface)
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
2621
else:
2622
raise
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1753
self.interface)
1754
else:
1755
try:
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1757
SO_BINDTODEVICE,
1758
str(self.interface
1759
+ '\0'))
1760
except socket.error as error:
1761
if error[0] == errno.EPERM:
1762
logger.error("No permission to"
1763
" bind to interface %s",
1764
self.interface)
1765
elif error[0] == errno.ENOPROTOOPT:
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1768
self.interface)
1769
else:
1770
raise
2623
1771
# Only bind(2) the socket if we really need to.
2624
1772
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
2627
1773
if not self.server_address[0]:
2628
1774
if self.address_family == socket.AF_INET6:
2629
any_address = "::" # in6addr_any
1775
any_address = "::" # in6addr_any
2630
1776
else:
2631
any_address = "0.0.0.0" # INADDR_ANY
1777
any_address = socket.INADDR_ANY
2632
1778
self.server_address = (any_address,
2633
1779
self.server_address[1])
2634
1780
elif not self.server_address[1]:
2635
self.server_address = (self.server_address[0], 0)
1781
self.server_address = (self.server_address[0],
1782
0)
2636
1783
# if self.interface:
2637
1784
# self.server_address = (self.server_address[0],
2638
1785
# 0, # port
2644
1791
2645
1792
class MandosServer(IPv6_TCPServer):
2646
1793
"""Mandos server.
2647
1794
2648
1795
Attributes:
2649
1796
clients: set of Client objects
2650
1797
gnutls_priority GnuTLS priority string
2651
1798
use_dbus: Boolean; to emit D-Bus signals or not
2652
2653
Assumes a GLib.MainLoop event loop.
1799
1800
Assumes a gobject.MainLoop event loop.
2654
1801
"""
2655
2656
1802
def __init__(self, server_address, RequestHandlerClass,
2657
interface=None,
2658
use_ipv6=True,
2659
clients=None,
2660
gnutls_priority=None,
2661
use_dbus=True,
2662
socketfd=None):
1803
interface=None, use_ipv6=True, clients=None,
1804
gnutls_priority=None, use_dbus=True):
2663
1805
self.enabled = False
2664
1806
self.clients = clients
2665
1807
if self.clients is None:
2668
1810
self.gnutls_priority = gnutls_priority
2669
1811
IPv6_TCPServer.__init__(self, server_address,
2670
1812
RequestHandlerClass,
2671
interface=interface,
2672
use_ipv6=use_ipv6,
2673
socketfd=socketfd)
2674
1813
interface = interface,
1814
use_ipv6 = use_ipv6)
2675
1815
def server_activate(self):
2676
1816
if self.enabled:
2677
1817
return socketserver.TCPServer.server_activate(self)
2678
1818
2679
1819
def enable(self):
2680
1820
self.enabled = True
2681
1821
2682
1822
def add_pipe(self, parent_pipe, proc):
2683
1823
# Call "handle_ipc" for both data and EOF events
2684
GLib.io_add_watch(
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2689
proc=proc))
2690
2691
def handle_ipc(self, source, condition,
2692
parent_pipe=None,
2693
proc=None,
2694
client_object=None):
1824
gobject.io_add_watch(parent_pipe.fileno(),
1825
gobject.IO_IN | gobject.IO_HUP,
1826
functools.partial(self.handle_ipc,
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1832
proc = None, client_object=None):
1833
condition_names = {
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1836
# blocking).
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1840
# broken, usually for pipes and
1841
# sockets).
1842
}
1843
conditions_string = ' | '.join(name
1844
for cond, name in
1845
condition_names.iteritems()
1846
if cond & condition)
2695
1847
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2697
1849
# Wait for other process to exit
2698
1850
proc.join()
2699
1851
return False
2700
1852
2701
1853
# Read a request from the child
2702
1854
request = parent_pipe.recv()
2703
1855
command = request[0]
2704
1856
2705
1857
if command == 'init':
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2709
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
continue
2713
if key_id and c.key_id == key_id:
2714
client = c
2715
break
2716
if fpr and c.fingerprint == fpr:
1858
fpr = request[1]
1859
address = request[2]
1860
1861
for c in self.clients.itervalues():
1862
if c.fingerprint == fpr:
2717
1863
client = c
2718
1864
break
2719
1865
else:
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
2722
1868
if self.use_dbus:
2723
1869
# Emit D-Bus signal
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
1870
mandos_dbus_service.ClientNotFound(fpr,
2725
1871
address[0])
2726
1872
parent_pipe.send(False)
2727
1873
return False
2728
2729
GLib.io_add_watch(
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2734
proc=proc,
2735
client_object=client))
1874
1875
gobject.io_add_watch(parent_pipe.fileno(),
1876
gobject.IO_IN | gobject.IO_HUP,
1877
functools.partial(self.handle_ipc,
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
2736
1883
parent_pipe.send(True)
2737
1884
# remove the old hook in favor of the new above hook on
2738
1885
# same fileno
2741
1888
funcname = request[1]
2742
1889
args = request[2]
2743
1890
kwargs = request[3]
2744
1891
2745
1892
parent_pipe.send(('data', getattr(client_object,
2746
1893
funcname)(*args,
2747
**kwargs)))
2748
1894
**kwargs)))
1895
2749
1896
if command == 'getattr':
2750
1897
attrname = request[1]
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
1898
if callable(client_object.__getattribute__(attrname)):
1899
parent_pipe.send(('function',))
2754
1900
else:
2755
parent_pipe.send((
2756
'data', client_object.__getattribute__(attrname)))
2757
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1903
2758
1904
if command == 'setattr':
2759
1905
attrname = request[1]
2760
1906
value = request[2]
2761
1907
setattr(client_object, attrname, value)
2762
1908
2763
1909
return True
2764
1910
2765
1911
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
True
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
True
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
True
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
True
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
True
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
True
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2782
True
2783
"""
2784
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2791
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2811
None,
2812
frozenset((token_hour, token_minute,
2813
token_second)))
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2829
token_week)))
2830
# Define starting values:
2831
# Value so far
2832
value = datetime.timedelta()
2833
found_token = None
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2837
s = duration
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2844
# Token found
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2852
# Go to found token
2853
found_token = token
2854
# Set valid next tokens
2855
followers = found_token.followers
2856
break
2857
else:
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
2860
.format(duration))
2861
# End token found
2862
return value
2863
2864
2865
1912
def string_to_delta(interval):
2866
1913
"""Parse a string and return a datetime.timedelta
2867
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
True
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
True
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
True
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
True
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
True
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2879
True
1914
1915
>>> string_to_delta('7d')
1916
datetime.timedelta(7)
1917
>>> string_to_delta('60s')
1918
datetime.timedelta(0, 60)
1919
>>> string_to_delta('60m')
1920
datetime.timedelta(0, 3600)
1921
>>> string_to_delta('24h')
1922
datetime.timedelta(1)
1923
>>> string_to_delta('1w')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('5m 30s')
1926
datetime.timedelta(0, 330)
2880
1927
"""
2881
2882
try:
2883
return rfc3339_duration_to_delta(interval)
2884
except ValueError:
2885
pass
2886
2887
1928
timevalue = datetime.timedelta(0)
2888
1929
for s in interval.split():
2889
1930
try:
2890
suffix = s[-1]
1931
suffix = unicode(s[-1])
2891
1932
value = int(s[:-1])
2892
1933
if suffix == "d":
2893
1934
delta = datetime.timedelta(value)
2900
1941
elif suffix == "w":
2901
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2902
1943
else:
2903
raise ValueError("Unknown suffix {!r}".format(suffix))
2904
except IndexError as e:
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
2905
1946
raise ValueError(*(e.args))
2906
1947
timevalue += delta
2907
1948
return timevalue
2908
1949
2909
1950
2910
def daemon(nochdir=False, noclose=False):
1951
def daemon(nochdir = False, noclose = False):
2911
1952
"""See daemon(3). Standard BSD Unix function.
2912
1953
2913
1954
This should really exist as os.daemon, but it doesn't (yet)."""
2914
1955
if os.fork():
2915
1956
sys.exit()
2920
1961
sys.exit()
2921
1962
if not noclose:
2922
1963
# Close all standard open file descriptors
2923
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2924
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
2925
1966
raise OSError(errno.ENODEV,
2926
"{} not a character device"
2927
.format(os.devnull))
1967
"%s not a character device"
1968
% os.path.devnull)
2928
1969
os.dup2(null, sys.stdin.fileno())
2929
1970
os.dup2(null, sys.stdout.fileno())
2930
1971
os.dup2(null, sys.stderr.fileno())
2933
1974
2934
1975
2935
1976
def main():
2936
1977
2937
1978
##################################################################
2938
1979
# Parsing of options, both command line and config file
2939
1980
2940
1981
parser = argparse.ArgumentParser()
2941
1982
parser.add_argument("-v", "--version", action="version",
2942
version="%(prog)s {}".format(version),
1983
version = "%%(prog)s %s" % version,
2943
1984
help="show version number and exit")
2944
1985
parser.add_argument("-i", "--interface", metavar="IF",
2945
1986
help="Bind to interface IF")
2951
1992
help="Run self-test")
2952
1993
parser.add_argument("--debug", action="store_true",
2953
1994
help="Debug mode; run in foreground and log"
2954
" to terminal", default=None)
1995
" to terminal")
2955
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
2956
1997
help="Debug level for stdout output")
2957
1998
parser.add_argument("--priority", help="GnuTLS"
2964
2005
" files")
2965
2006
parser.add_argument("--no-dbus", action="store_false",
2966
2007
dest="use_dbus", help="Do not provide D-Bus"
2967
" system bus interface", default=None)
2008
" system bus interface")
2968
2009
parser.add_argument("--no-ipv6", action="store_false",
2969
dest="use_ipv6", help="Do not use IPv6",
2970
default=None)
2010
dest="use_ipv6", help="Do not use IPv6")
2971
2011
parser.add_argument("--no-restore", action="store_false",
2972
2012
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2013
" state")
2977
2014
parser.add_argument("--statedir", metavar="DIR",
2978
2015
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2983
default=None)
2984
2016
2985
2017
options = parser.parse_args()
2986
2018
2019
if options.check:
2020
import doctest
2021
doctest.testmod()
2022
sys.exit()
2023
2987
2024
# Default values for config file for server-global settings
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
else:
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2995
"address": "",
2996
"port": "",
2997
"debug": "False",
2998
"priority": priority,
2999
"servicename": "Mandos",
3000
"use_dbus": "True",
3001
"use_ipv6": "True",
3002
"debuglevel": "",
3003
"restore": "True",
3004
"socket": "",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
3007
"zeroconf": "True",
3008
}
3009
del priority
3010
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
2037
}
2038
3011
2039
# Parse config file for server-global settings
3012
server_config = configparser.ConfigParser(server_defaults)
2040
server_config = configparser.SafeConfigParser(server_defaults)
3013
2041
del server_defaults
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
2042
server_config.read(os.path.join(options.configdir,
2043
"mandos.conf"))
2044
# Convert the SafeConfigParser object to a dict
3016
2045
server_settings = server_config.defaults()
3017
2046
# Use the appropriate methods on the non-string config options
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
2047
for option in ("debug", "use_dbus", "use_ipv6"):
3020
2048
server_settings[option] = server_config.getboolean("DEFAULT",
3021
2049
option)
3022
2050
if server_settings["port"]:
3023
2051
server_settings["port"] = server_config.getint("DEFAULT",
3024
2052
"port")
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3027
"socket")
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
3033
["socket"])
3034
2053
del server_config
3035
2054
3036
2055
# Override the settings from the config file with command line
3037
2056
# options, if set.
3038
2057
for option in ("interface", "address", "port", "debug",
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
3042
2061
value = getattr(options, option)
3043
2062
if value is not None:
3044
2063
server_settings[option] = value
3045
2064
del options
3046
2065
# Force all strings to be unicode
3047
2066
for option in server_settings.keys():
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3050
.decode("utf-8"))
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
2067
if type(server_settings[option]) is str:
2068
server_settings[option] = unicode(server_settings[option])
3058
2069
# Now we have our good server settings in "server_settings"
3059
2070
3060
2071
##################################################################
3061
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
3066
2072
3067
2073
# For convenience
3068
2074
debug = server_settings["debug"]
3069
2075
debuglevel = server_settings["debuglevel"]
3071
2077
use_ipv6 = server_settings["use_ipv6"]
3072
2078
stored_state_path = os.path.join(server_settings["statedir"],
3073
2079
stored_state_file)
3074
foreground = server_settings["foreground"]
3075
zeroconf = server_settings["zeroconf"]
3076
2080
3077
2081
if debug:
3078
2082
initlogger(debug, logging.DEBUG)
3079
2083
else:
3082
2086
else:
3083
2087
level = getattr(logging, debuglevel.upper())
3084
2088
initlogger(debug, level)
3085
2089
3086
2090
if server_settings["servicename"] != "Mandos":
3087
syslogger.setFormatter(
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
3089
' %(levelname)s: %(message)s'.format(
3090
server_settings["servicename"])))
3091
2091
syslogger.setFormatter(logging.Formatter
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
2095
3092
2096
# Parse config file with clients
3093
client_config = configparser.ConfigParser(Client.client_defaults)
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
3094
2098
client_config.read(os.path.join(server_settings["configdir"],
3095
2099
"clients.conf"))
3096
2100
3097
2101
global mandos_dbus_service
3098
2102
mandos_dbus_service = None
3099
3100
socketfd = None
3101
if server_settings["socket"] != "":
3102
socketfd = server_settings["socket"]
3103
tcp_server = MandosServer(
3104
(server_settings["address"], server_settings["port"]),
3105
ClientHandler,
3106
interface=(server_settings["interface"] or None),
3107
use_ipv6=use_ipv6,
3108
gnutls_priority=server_settings["priority"],
3109
use_dbus=use_dbus,
3110
socketfd=socketfd)
3111
if not foreground:
3112
pidfilename = "/run/mandos.pid"
3113
if not os.path.isdir("/run/."):
3114
pidfilename = "/var/run/mandos.pid"
3115
pidfile = None
3116
try:
3117
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3118
except IOError as e:
3119
logger.error("Could not open file %r", pidfilename,
3120
exc_info=e)
3121
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
3125
try:
3126
uid = pwd.getpwnam(name).pw_uid
3127
gid = pwd.getpwnam(group).pw_gid
3128
break
2103
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
2106
ClientHandler,
2107
interface=(server_settings["interface"]
2108
or None),
2109
use_ipv6=use_ipv6,
2110
gnutls_priority=
2111
server_settings["priority"],
2112
use_dbus=use_dbus)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2115
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
2119
2120
try:
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
2123
except KeyError:
2124
try:
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
3129
2127
except KeyError:
3130
continue
3131
else:
3132
uid = 65534
3133
gid = 65534
2128
try:
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
2131
except KeyError:
2132
uid = 65534
2133
gid = 65534
3134
2134
try:
3135
2135
os.setgid(gid)
3136
2136
os.setuid(uid)
3137
if debug:
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
gid))
3140
2137
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
3144
raise
3145
2138
if error[0] != errno.EPERM:
2139
raise error
2140
3146
2141
if debug:
3147
2142
# Enable all possible GnuTLS debugging
3148
2143
3149
2144
# "Use a log level over 10 to enable all debugging options."
3150
2145
# - GnuTLS manual
3151
gnutls.global_set_log_level(11)
3152
3153
@gnutls.log_func
2146
gnutls.library.functions.gnutls_global_set_log_level(11)
2147
2148
@gnutls.library.types.gnutls_log_func
3154
2149
def debug_gnutls(level, string):
3155
2150
logger.debug("GnuTLS: %s", string[:-1])
3156
3157
gnutls.global_set_log_function(debug_gnutls)
3158
2151
2152
(gnutls.library.functions
2153
.gnutls_global_set_log_function(debug_gnutls))
2154
3159
2155
# Redirect stdin so all checkers get /dev/null
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2156
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3161
2157
os.dup2(null, sys.stdin.fileno())
3162
2158
if null > 2:
3163
2159
os.close(null)
3164
2160
3165
2161
# Need to fork before connecting to D-Bus
3166
if not foreground:
2162
if not debug:
3167
2163
# Close all input and output, do double fork, etc.
3168
2164
daemon()
3169
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
3173
GLib.threads_init()
3174
2165
2166
gobject.threads_init()
2167
3175
2168
global main_loop
3176
2169
# From the Avahi example code
3177
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
2170
DBusGMainLoop(set_as_default=True )
2171
main_loop = gobject.MainLoop()
3179
2172
bus = dbus.SystemBus()
3180
2173
# End of Avahi example code
3181
2174
if use_dbus:
3182
2175
try:
3183
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
3184
bus,
3185
do_not_queue=True)
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3188
do_not_queue=True)
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
2177
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
3191
2183
use_dbus = False
3192
2184
server_settings["use_dbus"] = False
3193
2185
tcp_server.use_dbus = False
3194
if zeroconf:
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3199
protocol=protocol,
3200
bus=bus)
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
3204
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
2191
if server_settings["interface"]:
2192
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
2194
3205
2195
global multiprocessing_manager
3206
2196
multiprocessing_manager = multiprocessing.Manager()
3207
2197
3208
2198
client_class = Client
3209
2199
if use_dbus:
3210
client_class = functools.partial(ClientDBus, bus=bus)
3211
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
3212
2203
client_settings = Client.config_parser(client_config)
3213
2204
old_client_settings = {}
3214
2205
clients_data = {}
3215
3216
# This is used to redirect stdout and stderr for checker processes
3217
global wnull
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3220
# mode
3221
if debug or not foreground:
3222
wnull.close()
3223
2206
3224
2207
# Get client data and settings from last running state.
3225
2208
if server_settings["restore"]:
3226
2209
try:
3227
2210
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3230
stored_state)
3231
else:
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3235
# clients_data
3236
# .keys()
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3239
else key): value
3240
for key, value in
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3246
for k, v in
3247
clients_data[key].items()}
3248
clients_data[key] = value
3249
# .client_structure
3250
value["client_structure"] = [
3251
(s.decode("utf-8")
3252
if isinstance(s, bytes)
3253
else s) for s in
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3264
# .keys()
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3268
else key): value
3269
for key, value in
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
3277
.decode("utf-8"))
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
3278
2213
os.remove(stored_state_path)
3279
2214
except IOError as e:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3283
else:
3284
logger.critical("Could not load persistent state:",
3285
exc_info=e)
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
3286
2218
raise
3287
2219
except EOFError as e:
3288
2220
logger.warning("Could not load persistent state: "
3289
"EOFError:",
3290
exc_info=e)
3291
2221
"EOFError: {0}".format(e))
2222
3292
2223
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
3296
continue
3297
2224
for client_name, client in clients_data.iteritems():
3298
2225
# Decide which value to use after restoring saved state.
3299
2226
# We have three different values: Old config file,
3300
2227
# new config file, and saved state.
3305
2232
# For each value in new config, check if it
3306
2233
# differs from the old config value (Except for
3307
2234
# the "secret" attribute)
3308
if (name != "secret"
3309
and (value !=
3310
old_client_settings[client_name][name])):
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
3311
2238
client[name] = value
3312
2239
except KeyError:
3313
2240
pass
3314
2241
3315
2242
# Clients who has passed its expire date can still be
3316
# enabled if its last checker was successful. A Client
3317
# whose checker succeeded before we stored its state is
3318
# assumed to have successfully run all checkers during
3319
# downtime.
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
3320
2246
if client["enabled"]:
3321
2247
if datetime.datetime.utcnow() >= client["expires"]:
3322
2248
if not client["last_checked_ok"]:
3323
2249
logger.warning(
3324
"disabling client {} - Client never "
3325
"performed a successful checker".format(
3326
client_name))
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
3327
2253
client["enabled"] = False
3328
2254
elif client["last_checker_status"] != 0:
3329
2255
logger.warning(
3330
"disabling client {} - Client last"
3331
" checker failed with error code"
3332
" {}".format(
3333
client_name,
3334
client["last_checker_status"]))
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
3335
2260
client["enabled"] = False
3336
2261
else:
3337
client["expires"] = (
3338
datetime.datetime.utcnow()
3339
+ client["timeout"])
3340
logger.debug("Last checker succeeded,"
3341
" keeping {} enabled".format(
3342
client_name))
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
3343
2266
try:
3344
client["secret"] = pgp.decrypt(
3345
client["encrypted_secret"],
3346
client_settings[client_name]["secret"])
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
3347
2271
except PGPError:
3348
2272
# If decryption fails, we use secret from new settings
3349
logger.debug("Failed to decrypt {} old secret".format(
3350
client_name))
3351
client["secret"] = (client_settings[client_name]
3352
["secret"])
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
3353
2277
2278
3354
2279
# Add/remove clients based on new changes made to config
3355
for client_name in (set(old_client_settings)
3356
- set(client_settings)):
2280
for client_name in set(old_client_settings) - set(client_settings):
3357
2281
del clients_data[client_name]
3358
for client_name in (set(client_settings)
3359
- set(old_client_settings)):
2282
for client_name in set(client_settings) - set(old_client_settings):
3360
2283
clients_data[client_name] = client_settings[client_name]
3361
2284
3362
# Create all client objects
3363
for client_name, client in clients_data.items():
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
3364
2287
tcp_server.clients[client_name] = client_class(
3365
name=client_name,
3366
settings=client,
3367
server_settings=server_settings)
3368
2288
name = client_name, settings = client)
2289
3369
2290
if not tcp_server.clients:
3370
2291
logger.warning("No clients defined")
3371
3372
if not foreground:
3373
if pidfile is not None:
3374
pid = os.getpid()
3375
try:
3376
with pidfile:
3377
print(pid, file=pidfile)
3378
except IOError:
3379
logger.error("Could not write to file %r with PID %d",
3380
pidfilename, pid)
3381
del pidfile
2292
2293
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
3382
2305
del pidfilename
3383
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
3387
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2310
3388
2311
if use_dbus:
3389
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
2312
class MandosDBusService(dbus.service.Object):
3393
2313
"""A D-Bus proxy object"""
3394
3395
2314
def __init__(self):
3396
2315
dbus.service.Object.__init__(self, bus, "/")
3397
3398
2316
_interface = "se.recompile.Mandos"
3399
2317
3400
2318
@dbus.service.signal(_interface, signature="o")
3401
2319
def ClientAdded(self, objpath):
3402
2320
"D-Bus signal"
3403
2321
pass
3404
2322
3405
2323
@dbus.service.signal(_interface, signature="ss")
3406
def ClientNotFound(self, key_id, address):
2324
def ClientNotFound(self, fingerprint, address):
3407
2325
"D-Bus signal"
3408
2326
pass
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2327
3412
2328
@dbus.service.signal(_interface, signature="os")
3413
2329
def ClientRemoved(self, objpath, name):
3414
2330
"D-Bus signal"
3415
2331
pass
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2332
3419
2333
@dbus.service.method(_interface, out_signature="ao")
3420
2334
def GetAllClients(self):
3421
2335
"D-Bus method"
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2336
return dbus.Array(c.dbus_object_path
2337
for c in
2338
tcp_server.clients.itervalues())
2339
3427
2340
@dbus.service.method(_interface,
3428
2341
out_signature="a{oa{sv}}")
3429
2342
def GetAllClientsWithProperties(self):
3430
2343
"D-Bus method"
3431
2344
return dbus.Dictionary(
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
3435
2347
signature="oa{sv}")
3436
2348
3437
2349
@dbus.service.method(_interface, in_signature="o")
3438
2350
def RemoveClient(self, object_path):
3439
2351
"D-Bus method"
3440
for c in tcp_server.clients.values():
2352
for c in tcp_server.clients.itervalues():
3441
2353
if c.dbus_object_path == object_path:
3442
2354
del tcp_server.clients[c.name]
3443
2355
c.remove_from_connection()
3444
# Don't signal the disabling
2356
# Don't signal anything except ClientRemoved
3445
2357
c.disable(quiet=True)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
2358
# Emit D-Bus signal
2359
self.ClientRemoved(object_path, c.name)
3448
2360
return
3449
2361
raise KeyError(object_path)
3450
2362
3451
2363
del _interface
3452
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3456
"""D-Bus method"""
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3464
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3471
dbus.Dictionary(
3472
{interface: client.GetAll(interface)
3473
for interface in
3474
client._get_all_interface_names()}))
3475
# Old signal
3476
self.ClientAdded(client.dbus_object_path)
3477
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3480
if use_dbus:
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3485
# Old signal
3486
self.ClientRemoved(client.dbus_object_path,
3487
client.name)
3488
3489
mandos_dbus_service = MandosDBusService()
3490
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
3494
wn = wnull
3495
2364
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
2368
3496
2369
def cleanup():
3497
2370
"Cleanup function; run on exit"
3498
if zeroconf:
3499
service.cleanup()
3500
3501
mp.active_children()
3502
wn.close()
2371
service.cleanup()
2372
2373
multiprocessing.active_children()
3503
2374
if not (tcp_server.clients or client_settings):
3504
2375
return
3505
2376
3506
2377
# Store client before exiting. Secrets are encrypted with key
3507
2378
# based on what config file has. If config file is
3508
2379
# removed/edited, old secret will thus be unrecovable.
3509
2380
clients = {}
3510
2381
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
2382
for client in tcp_server.clients.itervalues():
3512
2383
key = client_settings[client.name]["secret"]
3513
2384
client.encrypted_secret = pgp.encrypt(client.secret,
3514
2385
key)
3515
2386
client_dict = {}
3516
2387
3517
2388
# A list of attributes that can not be pickled
3518
2389
# + secret.
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
3522
.Object):
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
3523
2394
exclude.add(name)
3524
2395
3525
2396
client_dict["encrypted_secret"] = (client
3526
2397
.encrypted_secret)
3527
2398
for attr in client.client_structure:
3528
2399
if attr not in exclude:
3529
2400
client_dict[attr] = getattr(client, attr)
3530
2401
3531
2402
clients[client.name] = client_dict
3532
2403
del client_settings[client.name]["secret"]
3533
2404
3534
2405
try:
3535
with tempfile.NamedTemporaryFile(
3536
mode='wb',
3537
suffix=".pickle",
3538
prefix='clients-',
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3542
protocol=2)
3543
tempname = stored_state.name
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
3544
2412
os.rename(tempname, stored_state_path)
3545
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
3546
2416
if not debug:
3547
2417
try:
3548
2418
os.remove(tempname)
3549
2419
except NameError:
3550
2420
pass
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3554
else:
3555
logger.warning("Could not save persistent state:",
3556
exc_info=e)
3557
raise
3558
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
3559
2425
# Delete all clients, and settings from config
3560
2426
while tcp_server.clients:
3561
2427
name, client = tcp_server.clients.popitem()
3562
2428
if use_dbus:
3563
2429
client.remove_from_connection()
3564
# Don't signal the disabling
2430
# Don't signal anything except ClientRemoved
3565
2431
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
3567
2432
if use_dbus:
3568
mandos_dbus_service.client_removed_signal(client)
2433
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
2436
client.name)
3569
2437
client_settings.clear()
3570
2438
3571
2439
atexit.register(cleanup)
3572
3573
for client in tcp_server.clients.values():
2440
2441
for client in tcp_server.clients.itervalues():
3574
2442
if use_dbus:
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3577
2445
# Need to initiate checking of clients
3578
2446
if client.enabled:
3579
2447
client.init_checker()
3580
2448
3581
2449
tcp_server.enable()
3582
2450
tcp_server.server_activate()
3583
2451
3584
2452
# Find out what port we got
3585
if zeroconf:
3586
service.port = tcp_server.socket.getsockname()[1]
2453
service.port = tcp_server.socket.getsockname()[1]
3587
2454
if use_ipv6:
3588
2455
logger.info("Now listening on address %r, port %d,"
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
2456
" flowinfo %d, scope_id %d"
2457
% tcp_server.socket.getsockname())
3591
2458
else: # IPv4
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3594
3595
# service.interface = tcp_server.socket.getsockname()[3]
3596
2459
logger.info("Now listening on address %r, port %d"
2460
% tcp_server.socket.getsockname())
2461
2462
#service.interface = tcp_server.socket.getsockname()[3]
2463
3597
2464
try:
3598
if zeroconf:
3599
# From the Avahi example code
3600
try:
3601
service.activate()
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3604
cleanup()
3605
sys.exit(1)
3606
# End of Avahi example code
3607
3608
GLib.io_add_watch(
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
3613
2465
# From the Avahi example code
2466
try:
2467
service.activate()
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2470
cleanup()
2471
sys.exit(1)
2472
# End of Avahi example code
2473
2474
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2475
lambda *args, **kwargs:
2476
(tcp_server.handle_request
2477
(*args[2:], **kwargs) or True))
2478
3614
2479
logger.debug("Starting main loop")
3615
2480
main_loop.run()
3616
2481
except AvahiError as error:
3617
logger.critical("Avahi Error", exc_info=error)
2482
logger.critical("AvahiError: %s", error)
3618
2483
cleanup()
3619
2484
sys.exit(1)
3620
2485
except KeyboardInterrupt:
3625
2490
# Must run before the D-Bus bus name gets deregistered
3626
2491
cleanup()
3627
2492
3628
3629
def should_only_run_tests():
3630
parser = argparse.ArgumentParser(add_help=False)
3631
parser.add_argument("--check", action='store_true')
3632
args, unknown_args = parser.parse_known_args()
3633
run_tests = args.check
3634
if run_tests:
3635
# Remove --check argument from sys.argv
3636
sys.argv[1:] = unknown_args
3637
return run_tests
3638
3639
# Add all tests from doctest strings
3640
def load_tests(loader, tests, none):
3641
import doctest
3642
tests.addTests(doctest.DocTestSuite())
3643
return tests
3644
3645
2493
if __name__ == '__main__':
3646
try:
3647
if should_only_run_tests():
3648
# Call using ./mandos --check [--verbose]
3649
unittest.main()
3650
else:
3651
main()
3652
finally:
3653
logging.shutdown()
2494
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0