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- Committer: Teddy Hogeborn
- Date: 2022-04-23 21:14:38 UTC
- Revision ID: teddy@recompile.se-20220423211438-qadwdpyodk1zfra5
Debian package: Client: Update Lintian override file
* debian/mandos-client.lintian-overrides: Remove all empty commented
lines. Re-word text to avoid negation. Rename "setuid-binary" tag
to "elevated-privileges".
* debian/mandos-client.lintian-overrides: Remove all empty commented
lines. Re-word text to avoid negation. Rename "setuid-binary" tag
to "elevated-privileges".
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
68
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
69
83
70
84
import dbus
71
85
import dbus.service
72
import gobject
73
import avahi
86
import gi
87
from gi.repository import GLib
74
88
from dbus.mainloop.glib import DBusGMainLoop
75
89
import ctypes
76
90
import ctypes.util
77
91
import xml.dom.minidom
78
92
import inspect
79
import GnuPGInterface
80
81
try:
93
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
82
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
83
123
except AttributeError:
84
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
85
127
from IN import SO_BINDTODEVICE
86
128
except ImportError:
87
SO_BINDTODEVICE = None
88
89
version = "1.5.3"
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.14"
90
147
stored_state_file = "clients.pickle"
91
148
92
149
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
96
152
97
153
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
101
156
except (OSError, AttributeError):
157
102
158
def if_nametoindex(interface):
103
159
"Get an interface index the hard way, i.e. using fcntl()"
104
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
161
with contextlib.closing(socket.socket()) as s:
106
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
165
return interface_index
112
166
113
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
114
184
def initlogger(debug, level=logging.WARNING):
115
185
"""init logger and add loglevel"""
116
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
117
191
syslogger.setFormatter(logging.Formatter
118
192
('Mandos [%(process)d]: %(levelname)s:'
119
193
' %(message)s'))
120
194
logger.addHandler(syslogger)
121
195
122
196
if debug:
123
197
console = logging.StreamHandler()
124
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
134
208
pass
135
209
136
210
137
class PGPEngine(object):
211
class PGPEngine:
138
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
139
214
def __init__(self):
140
self.gnupg = GnuPGInterface.GnuPG()
141
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.gnupg.options.meta_interactive = False
144
self.gnupg.options.homedir = self.tempdir
145
self.gnupg.options.extra_args.extend(['--force-mdc',
146
'--quiet',
147
'--no-use-agent'])
148
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
149
235
def __enter__(self):
150
236
return self
151
152
def __exit__ (self, exc_type, exc_value, traceback):
237
238
def __exit__(self, exc_type, exc_value, traceback):
153
239
self._cleanup()
154
240
return False
155
241
156
242
def __del__(self):
157
243
self._cleanup()
158
244
159
245
def _cleanup(self):
160
246
if self.tempdir is not None:
161
247
# Delete contents of tempdir
162
248
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
249
topdown=False):
164
250
for filename in files:
165
251
os.remove(os.path.join(root, filename))
166
252
for dirname in dirs:
168
254
# Remove tempdir
169
255
os.rmdir(self.tempdir)
170
256
self.tempdir = None
171
257
172
258
def password_encode(self, password):
173
259
# Passphrase can not be empty and can not contain newlines or
174
260
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
176
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
177
269
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
180
try:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
185
f.write(data)
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
188
proc.wait()
189
except IOError as e:
190
raise PGPError(e)
191
self.gnupg.passphrase = None
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
192
285
return ciphertext
193
286
194
287
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
197
try:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
202
f.write(data)
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
205
proc.wait()
206
except IOError as e:
207
raise PGPError(e)
208
self.gnupg.passphrase = None
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
209
303
return decrypted_plaintext
210
304
211
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
212
331
213
332
class AvahiError(Exception):
214
333
def __init__(self, value, *args, **kwargs):
215
334
self.value = value
216
super(AvahiError, self).__init__(value, *args, **kwargs)
217
def __unicode__(self):
218
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
219
338
220
339
class AvahiServiceError(AvahiError):
221
340
pass
222
341
342
223
343
class AvahiGroupError(AvahiError):
224
344
pass
225
345
226
346
227
class AvahiService(object):
347
class AvahiService:
228
348
"""An Avahi (Zeroconf) service.
229
349
230
350
Attributes:
231
351
interface: integer; avahi.IF_UNSPEC or an interface index.
232
352
Used to optionally bind to the specified interface.
233
353
name: string; Example: 'Mandos'
234
354
type: string; Example: '_mandos._tcp'.
235
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
236
356
port: integer; what port to announce
237
357
TXT: list of strings; TXT record for the service
238
358
domain: string; Domain to publish on, default to .local if empty.
244
364
server: D-Bus Server
245
365
bus: dbus.SystemBus()
246
366
"""
247
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
248
servicetype = None, port = None, TXT = None,
249
domain = "", host = "", max_renames = 32768,
250
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
251
379
self.interface = interface
252
380
self.name = name
253
381
self.type = servicetype
262
390
self.server = None
263
391
self.bus = bus
264
392
self.entry_group_state_changed_match = None
265
def rename(self):
393
394
def rename(self, remove=True):
266
395
"""Derived from the Avahi example code"""
267
396
if self.rename_count >= self.max_renames:
268
397
logger.critical("No suitable Zeroconf service name found"
269
398
" after %i retries, exiting.",
270
399
self.rename_count)
271
400
raise AvahiServiceError("Too many renames")
272
self.name = unicode(self.server
273
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
274
404
logger.info("Changing Zeroconf service name to %r ...",
275
405
self.name)
276
self.remove()
406
if remove:
407
self.remove()
277
408
try:
278
409
self.add()
279
410
except dbus.exceptions.DBusException as error:
280
logger.critical("D-Bus Exception", exc_info=error)
281
self.cleanup()
282
os._exit(1)
283
self.rename_count += 1
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
284
420
def remove(self):
285
421
"""Derived from the Avahi example code"""
286
422
if self.entry_group_state_changed_match is not None:
288
424
self.entry_group_state_changed_match = None
289
425
if self.group is not None:
290
426
self.group.Reset()
427
291
428
def add(self):
292
429
"""Derived from the Avahi example code"""
293
430
self.remove()
310
447
dbus.UInt16(self.port),
311
448
avahi.string_array_to_txt_array(self.TXT))
312
449
self.group.Commit()
450
313
451
def entry_group_state_changed(self, state, error):
314
452
"""Derived from the Avahi example code"""
315
453
logger.debug("Avahi entry group state change: %i", state)
316
454
317
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
318
456
logger.debug("Zeroconf service established.")
319
457
elif state == avahi.ENTRY_GROUP_COLLISION:
321
459
self.rename()
322
460
elif state == avahi.ENTRY_GROUP_FAILURE:
323
461
logger.critical("Avahi: Error in group state changed %s",
324
unicode(error))
325
raise AvahiGroupError("State changed: {0!s}"
326
.format(error))
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
327
465
def cleanup(self):
328
466
"""Derived from the Avahi example code"""
329
467
if self.group is not None:
334
472
pass
335
473
self.group = None
336
474
self.remove()
475
337
476
def server_state_changed(self, state, error=None):
338
477
"""Derived from the Avahi example code"""
339
478
logger.debug("Avahi server state change: %i", state)
340
bad_states = { avahi.SERVER_INVALID:
341
"Zeroconf server invalid",
342
avahi.SERVER_REGISTERING: None,
343
avahi.SERVER_COLLISION:
344
"Zeroconf server name collision",
345
avahi.SERVER_FAILURE:
346
"Zeroconf server failure" }
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
347
485
if state in bad_states:
348
486
if bad_states[state] is not None:
349
487
if error is None:
352
490
logger.error(bad_states[state] + ": %r", error)
353
491
self.cleanup()
354
492
elif state == avahi.SERVER_RUNNING:
355
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
356
505
else:
357
506
if error is None:
358
507
logger.debug("Unknown state: %r", state)
359
508
else:
360
509
logger.debug("Unknown state: %r: %r", state, error)
510
361
511
def activate(self):
362
512
"""Derived from the Avahi example code"""
363
513
if self.server is None:
367
517
follow_name_owner_changes=True),
368
518
avahi.DBUS_INTERFACE_SERVER)
369
519
self.server.connect_to_signal("StateChanged",
370
self.server_state_changed)
520
self.server_state_changed)
371
521
self.server_state_changed(self.server.GetState())
372
522
523
373
524
class AvahiServiceToSyslog(AvahiService):
374
def rename(self):
525
def rename(self, *args, **kwargs):
375
526
"""Add the new name to the syslog messages"""
376
ret = AvahiService.rename(self)
377
syslogger.setFormatter(logging.Formatter
378
('Mandos ({0}) [%(process)d]:'
379
' %(levelname)s: %(message)s'
380
.format(self.name)))
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
381
532
return ret
382
533
383
def timedelta_to_milliseconds(td):
384
"Convert a datetime.timedelta() to milliseconds"
385
return ((td.days * 24 * 60 * 60 * 1000)
386
+ (td.seconds * 1000)
387
+ (td.microseconds // 1000))
388
389
class Client(object):
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class _session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(_session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class _openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code).decode(
598
"utf-8", errors="replace")
599
return super(gnutls.Error, self).__init__(
600
message, *args)
601
602
class CertificateSecurityError(Error):
603
pass
604
605
class PointerTo:
606
def __init__(self, cls):
607
self.cls = cls
608
609
def from_param(self, obj):
610
if not isinstance(obj, self.cls):
611
raise TypeError("Not of type {}: {!r}"
612
.format(self.cls.__name__, obj))
613
return ctypes.byref(obj.from_param(obj))
614
615
class CastToVoidPointer:
616
def __init__(self, cls):
617
self.cls = cls
618
619
def from_param(self, obj):
620
if not isinstance(obj, self.cls):
621
raise TypeError("Not of type {}: {!r}"
622
.format(self.cls.__name__, obj))
623
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
624
625
class With_from_param:
626
@classmethod
627
def from_param(cls, obj):
628
return obj._as_parameter_
629
630
# Classes
631
class Credentials(With_from_param):
632
def __init__(self):
633
self._as_parameter_ = gnutls.certificate_credentials_t()
634
gnutls.certificate_allocate_credentials(self)
635
self.type = gnutls.CRD_CERTIFICATE
636
637
def __del__(self):
638
gnutls.certificate_free_credentials(self)
639
640
class ClientSession(With_from_param):
641
def __init__(self, socket, credentials=None):
642
self._as_parameter_ = gnutls.session_t()
643
gnutls_flags = gnutls.CLIENT
644
if gnutls.check_version(b"3.5.6"):
645
gnutls_flags |= gnutls.NO_TICKETS
646
if gnutls.has_rawpk:
647
gnutls_flags |= gnutls.ENABLE_RAWPK
648
gnutls.init(self, gnutls_flags)
649
del gnutls_flags
650
gnutls.set_default_priority(self)
651
gnutls.transport_set_ptr(self, socket.fileno())
652
gnutls.handshake_set_private_extensions(self, True)
653
self.socket = socket
654
if credentials is None:
655
credentials = gnutls.Credentials()
656
gnutls.credentials_set(self, credentials.type,
657
credentials)
658
self.credentials = credentials
659
660
def __del__(self):
661
gnutls.deinit(self)
662
663
def handshake(self):
664
return gnutls.handshake(self)
665
666
def send(self, data):
667
data = bytes(data)
668
data_len = len(data)
669
while data_len > 0:
670
data_len -= gnutls.record_send(self, data[-data_len:],
671
data_len)
672
673
def bye(self):
674
return gnutls.bye(self, gnutls.SHUT_RDWR)
675
676
# Error handling functions
677
def _error_code(result):
678
"""A function to raise exceptions on errors, suitable
679
for the 'restype' attribute on ctypes functions"""
680
if result >= gnutls.E_SUCCESS:
681
return result
682
if result == gnutls.E_NO_CERTIFICATE_FOUND:
683
raise gnutls.CertificateSecurityError(code=result)
684
raise gnutls.Error(code=result)
685
686
def _retry_on_error(result, func, arguments,
687
_error_code=_error_code):
688
"""A function to retry on some errors, suitable
689
for the 'errcheck' attribute on ctypes functions"""
690
while result < gnutls.E_SUCCESS:
691
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
692
return _error_code(result)
693
result = func(*arguments)
694
return result
695
696
# Unless otherwise indicated, the function declarations below are
697
# all from the gnutls/gnutls.h C header file.
698
699
# Functions
700
priority_set_direct = _library.gnutls_priority_set_direct
701
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
702
ctypes.POINTER(ctypes.c_char_p)]
703
priority_set_direct.restype = _error_code
704
705
init = _library.gnutls_init
706
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
707
init.restype = _error_code
708
709
set_default_priority = _library.gnutls_set_default_priority
710
set_default_priority.argtypes = [ClientSession]
711
set_default_priority.restype = _error_code
712
713
record_send = _library.gnutls_record_send
714
record_send.argtypes = [ClientSession, ctypes.c_void_p,
715
ctypes.c_size_t]
716
record_send.restype = ctypes.c_ssize_t
717
record_send.errcheck = _retry_on_error
718
719
certificate_allocate_credentials = (
720
_library.gnutls_certificate_allocate_credentials)
721
certificate_allocate_credentials.argtypes = [
722
PointerTo(Credentials)]
723
certificate_allocate_credentials.restype = _error_code
724
725
certificate_free_credentials = (
726
_library.gnutls_certificate_free_credentials)
727
certificate_free_credentials.argtypes = [Credentials]
728
certificate_free_credentials.restype = None
729
730
handshake_set_private_extensions = (
731
_library.gnutls_handshake_set_private_extensions)
732
handshake_set_private_extensions.argtypes = [ClientSession,
733
ctypes.c_int]
734
handshake_set_private_extensions.restype = None
735
736
credentials_set = _library.gnutls_credentials_set
737
credentials_set.argtypes = [ClientSession, credentials_type_t,
738
CastToVoidPointer(Credentials)]
739
credentials_set.restype = _error_code
740
741
strerror = _library.gnutls_strerror
742
strerror.argtypes = [ctypes.c_int]
743
strerror.restype = ctypes.c_char_p
744
745
certificate_type_get = _library.gnutls_certificate_type_get
746
certificate_type_get.argtypes = [ClientSession]
747
certificate_type_get.restype = _error_code
748
749
certificate_get_peers = _library.gnutls_certificate_get_peers
750
certificate_get_peers.argtypes = [ClientSession,
751
ctypes.POINTER(ctypes.c_uint)]
752
certificate_get_peers.restype = ctypes.POINTER(datum_t)
753
754
global_set_log_level = _library.gnutls_global_set_log_level
755
global_set_log_level.argtypes = [ctypes.c_int]
756
global_set_log_level.restype = None
757
758
global_set_log_function = _library.gnutls_global_set_log_function
759
global_set_log_function.argtypes = [log_func]
760
global_set_log_function.restype = None
761
762
deinit = _library.gnutls_deinit
763
deinit.argtypes = [ClientSession]
764
deinit.restype = None
765
766
handshake = _library.gnutls_handshake
767
handshake.argtypes = [ClientSession]
768
handshake.restype = ctypes.c_int
769
handshake.errcheck = _retry_on_error
770
771
transport_set_ptr = _library.gnutls_transport_set_ptr
772
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
773
transport_set_ptr.restype = None
774
775
bye = _library.gnutls_bye
776
bye.argtypes = [ClientSession, close_request_t]
777
bye.restype = ctypes.c_int
778
bye.errcheck = _retry_on_error
779
780
check_version = _library.gnutls_check_version
781
check_version.argtypes = [ctypes.c_char_p]
782
check_version.restype = ctypes.c_char_p
783
784
_need_version = b"3.3.0"
785
if check_version(_need_version) is None:
786
raise self.Error("Needs GnuTLS {} or later"
787
.format(_need_version))
788
789
_tls_rawpk_version = b"3.6.6"
790
has_rawpk = bool(check_version(_tls_rawpk_version))
791
792
if has_rawpk:
793
# Types
794
class pubkey_st(ctypes.Structure):
795
_fields = []
796
pubkey_t = ctypes.POINTER(pubkey_st)
797
798
x509_crt_fmt_t = ctypes.c_int
799
800
# All the function declarations below are from
801
# gnutls/abstract.h
802
pubkey_init = _library.gnutls_pubkey_init
803
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
804
pubkey_init.restype = _error_code
805
806
pubkey_import = _library.gnutls_pubkey_import
807
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
808
x509_crt_fmt_t]
809
pubkey_import.restype = _error_code
810
811
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
812
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
813
ctypes.POINTER(ctypes.c_ubyte),
814
ctypes.POINTER(ctypes.c_size_t)]
815
pubkey_get_key_id.restype = _error_code
816
817
pubkey_deinit = _library.gnutls_pubkey_deinit
818
pubkey_deinit.argtypes = [pubkey_t]
819
pubkey_deinit.restype = None
820
else:
821
# All the function declarations below are from
822
# gnutls/openpgp.h
823
824
openpgp_crt_init = _library.gnutls_openpgp_crt_init
825
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
826
openpgp_crt_init.restype = _error_code
827
828
openpgp_crt_import = _library.gnutls_openpgp_crt_import
829
openpgp_crt_import.argtypes = [openpgp_crt_t,
830
ctypes.POINTER(datum_t),
831
openpgp_crt_fmt_t]
832
openpgp_crt_import.restype = _error_code
833
834
openpgp_crt_verify_self = \
835
_library.gnutls_openpgp_crt_verify_self
836
openpgp_crt_verify_self.argtypes = [
837
openpgp_crt_t,
838
ctypes.c_uint,
839
ctypes.POINTER(ctypes.c_uint),
840
]
841
openpgp_crt_verify_self.restype = _error_code
842
843
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
844
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
845
openpgp_crt_deinit.restype = None
846
847
openpgp_crt_get_fingerprint = (
848
_library.gnutls_openpgp_crt_get_fingerprint)
849
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
850
ctypes.c_void_p,
851
ctypes.POINTER(
852
ctypes.c_size_t)]
853
openpgp_crt_get_fingerprint.restype = _error_code
854
855
if check_version(b"3.6.4"):
856
certificate_type_get2 = _library.gnutls_certificate_type_get2
857
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
858
certificate_type_get2.restype = _error_code
859
860
# Remove non-public functions
861
del _error_code, _retry_on_error
862
863
864
def call_pipe(connection, # : multiprocessing.Connection
865
func, *args, **kwargs):
866
"""This function is meant to be called by multiprocessing.Process
867
868
This function runs func(*args, **kwargs), and writes the resulting
869
return value on the provided multiprocessing.Connection.
870
"""
871
connection.send(func(*args, **kwargs))
872
connection.close()
873
874
875
class Client:
390
876
"""A representation of a client host served by this server.
391
877
392
878
Attributes:
393
879
approved: bool(); 'None' if not yet approved/disapproved
394
880
approval_delay: datetime.timedelta(); Time to wait for approval
395
881
approval_duration: datetime.timedelta(); Duration of one approval
396
checker: subprocess.Popen(); a running checker process used
397
to see if the client lives.
398
'None' if no process is running.
399
checker_callback_tag: a gobject event source tag, or None
882
checker: multiprocessing.Process(); a running checker process used
883
to see if the client lives. 'None' if no process is
884
running.
885
checker_callback_tag: a GLib event source tag, or None
400
886
checker_command: string; External command which is run to check
401
887
if client lives. %() expansions are done at
402
888
runtime with vars(self) as dict, so that for
403
889
instance %(name)s can be used in the command.
404
checker_initiator_tag: a gobject event source tag, or None
890
checker_initiator_tag: a GLib event source tag, or None
405
891
created: datetime.datetime(); (UTC) object creation
406
892
client_structure: Object describing what attributes a client has
407
893
and is used for storing the client at exit
408
894
current_checker_command: string; current running checker_command
409
disable_initiator_tag: a gobject event source tag, or None
895
disable_initiator_tag: a GLib event source tag, or None
410
896
enabled: bool()
411
897
fingerprint: string (40 or 32 hexadecimal digits); used to
412
uniquely identify the client
898
uniquely identify an OpenPGP client
899
key_id: string (64 hexadecimal digits); used to uniquely identify
900
a client using raw public keys
413
901
host: string; available for use by the checker command
414
902
interval: datetime.timedelta(); How often to start a new checker
415
903
last_approval_request: datetime.datetime(); (UTC) or None
417
905
last_checker_status: integer between 0 and 255 reflecting exit
418
906
status of last checker. -1 reflects crashed
419
907
checker, -2 means no checker completed yet.
908
last_checker_signal: The signal which killed the last checker, if
909
last_checker_status is -1
420
910
last_enabled: datetime.datetime(); (UTC) or None
421
911
name: string; from the config file, used in log messages and
422
912
D-Bus identifiers
427
917
runtime_expansions: Allowed attributes for runtime expansion.
428
918
expires: datetime.datetime(); time (UTC) when a client will be
429
919
disabled, or None
920
server_settings: The server_settings dict from main()
430
921
"""
431
922
432
923
runtime_expansions = ("approval_delay", "approval_duration",
433
"created", "enabled", "fingerprint",
434
"host", "interval", "last_checked_ok",
924
"created", "enabled", "expires", "key_id",
925
"fingerprint", "host", "interval",
926
"last_approval_request", "last_checked_ok",
435
927
"last_enabled", "name", "timeout")
436
client_defaults = { "timeout": "5m",
437
"extended_timeout": "15m",
438
"interval": "2m",
439
"checker": "fping -q -- %%(host)s",
440
"host": "",
441
"approval_delay": "0s",
442
"approval_duration": "1s",
443
"approved_by_default": "True",
444
"enabled": "True",
445
}
446
447
def timeout_milliseconds(self):
448
"Return the 'timeout' attribute in milliseconds"
449
return timedelta_to_milliseconds(self.timeout)
450
451
def extended_timeout_milliseconds(self):
452
"Return the 'extended_timeout' attribute in milliseconds"
453
return timedelta_to_milliseconds(self.extended_timeout)
454
455
def interval_milliseconds(self):
456
"Return the 'interval' attribute in milliseconds"
457
return timedelta_to_milliseconds(self.interval)
458
459
def approval_delay_milliseconds(self):
460
return timedelta_to_milliseconds(self.approval_delay)
928
client_defaults = {
929
"timeout": "PT5M",
930
"extended_timeout": "PT15M",
931
"interval": "PT2M",
932
"checker": "fping -q -- %%(host)s",
933
"host": "",
934
"approval_delay": "PT0S",
935
"approval_duration": "PT1S",
936
"approved_by_default": "True",
937
"enabled": "True",
938
}
461
939
462
940
@staticmethod
463
941
def config_parser(config):
471
949
for client_name in config.sections():
472
950
section = dict(config.items(client_name))
473
951
client = settings[client_name] = {}
474
952
475
953
client["host"] = section["host"]
476
954
# Reformat values from string types to Python types
477
955
client["approved_by_default"] = config.getboolean(
478
956
client_name, "approved_by_default")
479
957
client["enabled"] = config.getboolean(client_name,
480
958
"enabled")
481
959
960
# Uppercase and remove spaces from key_id and fingerprint
961
# for later comparison purposes with return value from the
962
# key_id() and fingerprint() functions
963
client["key_id"] = (section.get("key_id", "").upper()
964
.replace(" ", ""))
482
965
client["fingerprint"] = (section["fingerprint"].upper()
483
966
.replace(" ", ""))
484
967
if "secret" in section:
485
client["secret"] = section["secret"].decode("base64")
968
client["secret"] = codecs.decode(section["secret"]
969
.encode("utf-8"),
970
"base64")
486
971
elif "secfile" in section:
487
972
with open(os.path.expanduser(os.path.expandvars
488
973
(section["secfile"])),
489
974
"rb") as secfile:
490
975
client["secret"] = secfile.read()
491
976
else:
492
raise TypeError("No secret or secfile for section {0}"
977
raise TypeError("No secret or secfile for section {}"
493
978
.format(section))
494
979
client["timeout"] = string_to_delta(section["timeout"])
495
980
client["extended_timeout"] = string_to_delta(
503
988
client["last_approval_request"] = None
504
989
client["last_checked_ok"] = None
505
990
client["last_checker_status"] = -2
506
991
507
992
return settings
508
509
510
def __init__(self, settings, name = None):
511
"""Note: the 'checker' key in 'config' sets the
512
'checker_command' attribute and *not* the 'checker'
513
attribute."""
993
994
def __init__(self, settings, name=None, server_settings=None):
514
995
self.name = name
996
if server_settings is None:
997
server_settings = {}
998
self.server_settings = server_settings
515
999
# adding all client settings
516
for setting, value in settings.iteritems():
1000
for setting, value in settings.items():
517
1001
setattr(self, setting, value)
518
1002
519
1003
if self.enabled:
520
1004
if not hasattr(self, "last_enabled"):
521
1005
self.last_enabled = datetime.datetime.utcnow()
525
1009
else:
526
1010
self.last_enabled = None
527
1011
self.expires = None
528
1012
529
1013
logger.debug("Creating client %r", self.name)
530
# Uppercase and remove spaces from fingerprint for later
531
# comparison purposes with return value from the fingerprint()
532
# function
1014
logger.debug(" Key ID: %s", self.key_id)
533
1015
logger.debug(" Fingerprint: %s", self.fingerprint)
534
1016
self.created = settings.get("created",
535
1017
datetime.datetime.utcnow())
542
1024
self.current_checker_command = None
543
1025
self.approved = None
544
1026
self.approvals_pending = 0
545
self.changedstate = (multiprocessing_manager
546
.Condition(multiprocessing_manager
547
.Lock()))
548
self.client_structure = [attr for attr in
549
self.__dict__.iterkeys()
1027
self.changedstate = multiprocessing_manager.Condition(
1028
multiprocessing_manager.Lock())
1029
self.client_structure = [attr
1030
for attr in self.__dict__.keys()
550
1031
if not attr.startswith("_")]
551
1032
self.client_structure.append("client_structure")
552
553
for name, t in inspect.getmembers(type(self),
554
lambda obj:
555
isinstance(obj,
556
property)):
1033
1034
for name, t in inspect.getmembers(
1035
type(self), lambda obj: isinstance(obj, property)):
557
1036
if not name.startswith("_"):
558
1037
self.client_structure.append(name)
559
1038
560
1039
# Send notice to process children that client state has changed
561
1040
def send_changedstate(self):
562
1041
with self.changedstate:
563
1042
self.changedstate.notify_all()
564
1043
565
1044
def enable(self):
566
1045
"""Start this client's checker and timeout hooks"""
567
1046
if getattr(self, "enabled", False):
568
1047
# Already enabled
569
1048
return
570
self.send_changedstate()
571
1049
self.expires = datetime.datetime.utcnow() + self.timeout
572
1050
self.enabled = True
573
1051
self.last_enabled = datetime.datetime.utcnow()
574
1052
self.init_checker()
575
1053
self.send_changedstate()
1054
576
1055
def disable(self, quiet=True):
577
1056
"""Disable this client."""
578
1057
if not getattr(self, "enabled", False):
579
1058
return False
580
1059
if not quiet:
581
self.send_changedstate()
582
if not quiet:
583
1060
logger.info("Disabling client %s", self.name)
584
if getattr(self, "disable_initiator_tag", False):
585
gobject.source_remove(self.disable_initiator_tag)
1061
if getattr(self, "disable_initiator_tag", None) is not None:
1062
GLib.source_remove(self.disable_initiator_tag)
586
1063
self.disable_initiator_tag = None
587
1064
self.expires = None
588
if getattr(self, "checker_initiator_tag", False):
589
gobject.source_remove(self.checker_initiator_tag)
1065
if getattr(self, "checker_initiator_tag", None) is not None:
1066
GLib.source_remove(self.checker_initiator_tag)
590
1067
self.checker_initiator_tag = None
591
1068
self.stop_checker()
592
1069
self.enabled = False
593
# Do not run this again if called by a gobject.timeout_add
1070
if not quiet:
1071
self.send_changedstate()
1072
# Do not run this again if called by a GLib.timeout_add
594
1073
return False
595
1074
596
1075
def __del__(self):
597
1076
self.disable()
598
1077
599
1078
def init_checker(self):
600
1079
# Schedule a new checker to be started an 'interval' from now,
601
1080
# and every interval from then on.
602
self.checker_initiator_tag = (gobject.timeout_add
603
(self.interval_milliseconds(),
604
self.start_checker))
1081
if self.checker_initiator_tag is not None:
1082
GLib.source_remove(self.checker_initiator_tag)
1083
self.checker_initiator_tag = GLib.timeout_add(
1084
random.randrange(int(self.interval.total_seconds() * 1000
1085
+ 1)),
1086
self.start_checker)
605
1087
# Schedule a disable() when 'timeout' has passed
606
self.disable_initiator_tag = (gobject.timeout_add
607
(self.timeout_milliseconds(),
608
self.disable))
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(self.timeout.total_seconds() * 1000), self.disable)
609
1092
# Also start a new checker *right now*.
610
1093
self.start_checker()
611
612
def checker_callback(self, pid, condition, command):
1094
1095
def checker_callback(self, source, condition, connection,
1096
command):
613
1097
"""The checker has completed, so take appropriate actions."""
1098
# Read return code from connection (see call_pipe)
1099
returncode = connection.recv()
1100
connection.close()
1101
if self.checker is not None:
1102
self.checker.join()
614
1103
self.checker_callback_tag = None
615
1104
self.checker = None
616
if os.WIFEXITED(condition):
617
self.last_checker_status = os.WEXITSTATUS(condition)
1105
1106
if returncode >= 0:
1107
self.last_checker_status = returncode
1108
self.last_checker_signal = None
618
1109
if self.last_checker_status == 0:
619
1110
logger.info("Checker for %(name)s succeeded",
620
1111
vars(self))
621
1112
self.checked_ok()
622
1113
else:
623
logger.info("Checker for %(name)s failed",
624
vars(self))
1114
logger.info("Checker for %(name)s failed", vars(self))
625
1115
else:
626
1116
self.last_checker_status = -1
1117
self.last_checker_signal = -returncode
627
1118
logger.warning("Checker for %(name)s crashed?",
628
1119
vars(self))
629
1120
return False
1121
630
1122
def checked_ok(self):
631
1123
"""Assert that the client has been seen, alive and well."""
632
1124
self.last_checked_ok = datetime.datetime.utcnow()
633
1125
self.last_checker_status = 0
1126
self.last_checker_signal = None
634
1127
self.bump_timeout()
635
1128
636
1129
def bump_timeout(self, timeout=None):
637
1130
"""Bump up the timeout for this client."""
638
1131
if timeout is None:
639
1132
timeout = self.timeout
640
1133
if self.disable_initiator_tag is not None:
641
gobject.source_remove(self.disable_initiator_tag)
1134
GLib.source_remove(self.disable_initiator_tag)
1135
self.disable_initiator_tag = None
642
1136
if getattr(self, "enabled", False):
643
self.disable_initiator_tag = (gobject.timeout_add
644
(timedelta_to_milliseconds
645
(timeout), self.disable))
1137
self.disable_initiator_tag = GLib.timeout_add(
1138
int(timeout.total_seconds() * 1000), self.disable)
646
1139
self.expires = datetime.datetime.utcnow() + timeout
647
1140
648
1141
def need_approval(self):
649
1142
self.last_approval_request = datetime.datetime.utcnow()
650
1143
651
1144
def start_checker(self):
652
1145
"""Start a new checker subprocess if one is not running.
653
1146
654
1147
If a checker already exists, leave it running and do
655
1148
nothing."""
656
1149
# The reason for not killing a running checker is that if we
657
# did that, then if a checker (for some reason) started
658
# running slowly and taking more than 'interval' time, the
659
# client would inevitably timeout, since no checker would get
660
# a chance to run to completion. If we instead leave running
1150
# did that, and if a checker (for some reason) started running
1151
# slowly and taking more than 'interval' time, then the client
1152
# would inevitably timeout, since no checker would get a
1153
# chance to run to completion. If we instead leave running
661
1154
# checkers alone, the checker would have to take more time
662
1155
# than 'timeout' for the client to be disabled, which is as it
663
1156
# should be.
664
665
# If a checker exists, make sure it is not a zombie
666
try:
667
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
668
except (AttributeError, OSError) as error:
669
if (isinstance(error, OSError)
670
and error.errno != errno.ECHILD):
671
raise error
672
else:
673
if pid:
674
logger.warning("Checker was a zombie")
675
gobject.source_remove(self.checker_callback_tag)
676
self.checker_callback(pid, status,
677
self.current_checker_command)
1157
1158
if self.checker is not None and not self.checker.is_alive():
1159
logger.warning("Checker was not alive; joining")
1160
self.checker.join()
1161
self.checker = None
678
1162
# Start a new checker if needed
679
1163
if self.checker is None:
1164
# Escape attributes for the shell
1165
escaped_attrs = {
1166
attr: shlex.quote(str(getattr(self, attr)))
1167
for attr in self.runtime_expansions}
680
1168
try:
681
# In case checker_command has exactly one % operator
682
command = self.checker_command % self.host
683
except TypeError:
684
# Escape attributes for the shell
685
escaped_attrs = dict(
686
(attr,
687
re.escape(unicode(str(getattr(self, attr, "")),
688
errors=
689
'replace')))
690
for attr in
691
self.runtime_expansions)
692
693
try:
694
command = self.checker_command % escaped_attrs
695
except TypeError as error:
696
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1169
command = self.checker_command % escaped_attrs
1170
except TypeError as error:
1171
logger.error('Could not format string "%s"',
1172
self.checker_command,
1173
exc_info=error)
1174
return True # Try again later
699
1175
self.current_checker_command = command
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
self.checker = subprocess.Popen(command,
708
close_fds=True,
709
shell=True, cwd="/")
710
self.checker_callback_tag = (gobject.child_watch_add
711
(self.checker.pid,
712
self.checker_callback,
713
data=command))
714
# The checker may have completed before the gobject
715
# watch was added. Check for this.
716
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
717
if pid:
718
gobject.source_remove(self.checker_callback_tag)
719
self.checker_callback(pid, status, command)
720
except OSError as error:
721
logger.error("Failed to start subprocess",
722
exc_info=error)
723
# Re-run this periodically if run by gobject.timeout_add
1176
logger.info("Starting checker %r for %s", command,
1177
self.name)
1178
# We don't need to redirect stdout and stderr, since
1179
# in normal mode, that is already done by daemon(),
1180
# and in debug mode we don't want to. (Stdin is
1181
# always replaced by /dev/null.)
1182
# The exception is when not debugging but nevertheless
1183
# running in the foreground; use the previously
1184
# created wnull.
1185
popen_args = {"close_fds": True,
1186
"shell": True,
1187
"cwd": "/"}
1188
if (not self.server_settings["debug"]
1189
and self.server_settings["foreground"]):
1190
popen_args.update({"stdout": wnull,
1191
"stderr": wnull})
1192
pipe = multiprocessing.Pipe(duplex=False)
1193
self.checker = multiprocessing.Process(
1194
target=call_pipe,
1195
args=(pipe[1], subprocess.call, command),
1196
kwargs=popen_args)
1197
self.checker.start()
1198
self.checker_callback_tag = GLib.io_add_watch(
1199
GLib.IOChannel.unix_new(pipe[0].fileno()),
1200
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1201
self.checker_callback, pipe[0], command)
1202
# Re-run this periodically if run by GLib.timeout_add
724
1203
return True
725
1204
726
1205
def stop_checker(self):
727
1206
"""Force the checker process, if any, to stop."""
728
1207
if self.checker_callback_tag:
729
gobject.source_remove(self.checker_callback_tag)
1208
GLib.source_remove(self.checker_callback_tag)
730
1209
self.checker_callback_tag = None
731
1210
if getattr(self, "checker", None) is None:
732
1211
return
733
1212
logger.debug("Stopping checker for %(name)s", vars(self))
734
try:
735
self.checker.terminate()
736
#time.sleep(0.5)
737
#if self.checker.poll() is None:
738
# self.checker.kill()
739
except OSError as error:
740
if error.errno != errno.ESRCH: # No such process
741
raise
1213
self.checker.terminate()
742
1214
self.checker = None
743
1215
744
1216
745
def dbus_service_property(dbus_interface, signature="v",
746
access="readwrite", byte_arrays=False):
1217
def dbus_service_property(dbus_interface,
1218
signature="v",
1219
access="readwrite",
1220
byte_arrays=False):
747
1221
"""Decorators for marking methods of a DBusObjectWithProperties to
748
1222
become properties on the D-Bus.
749
1223
750
1224
The decorated method will be called with no arguments by "Get"
751
1225
and with one argument by "Set".
752
1226
753
1227
The parameters, where they are supported, are the same as
754
1228
dbus.service.method, except there is only "signature", since the
755
1229
type from Get() and the type sent to Set() is the same.
758
1232
# "Set" method, so we fail early here:
759
1233
if byte_arrays and signature != "ay":
760
1234
raise ValueError("Byte arrays not supported for non-'ay'"
761
" signature {0!r}".format(signature))
1235
" signature {!r}".format(signature))
1236
762
1237
def decorator(func):
763
1238
func._dbus_is_property = True
764
1239
func._dbus_interface = dbus_interface
767
1242
func._dbus_name = func.__name__
768
1243
if func._dbus_name.endswith("_dbus_property"):
769
1244
func._dbus_name = func._dbus_name[:-14]
770
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1245
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
771
1246
return func
1247
772
1248
return decorator
773
1249
774
1250
775
1251
def dbus_interface_annotations(dbus_interface):
776
"""Decorator for marking functions returning interface annotations.
777
1252
"""Decorator for marking functions returning interface annotations
1253
778
1254
Usage:
779
1255
780
1256
@dbus_interface_annotations("org.example.Interface")
781
1257
def _foo(self): # Function name does not matter
782
1258
return {"org.freedesktop.DBus.Deprecated": "true",
783
1259
"org.freedesktop.DBus.Property.EmitsChangedSignal":
784
1260
"false"}
785
1261
"""
1262
786
1263
def decorator(func):
787
1264
func._dbus_is_interface = True
788
1265
func._dbus_interface = dbus_interface
789
1266
func._dbus_name = dbus_interface
790
1267
return func
1268
791
1269
return decorator
792
1270
793
1271
794
1272
def dbus_annotations(annotations):
795
1273
"""Decorator to annotate D-Bus methods, signals or properties
796
1274
Usage:
797
1275
1276
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1277
"org.freedesktop.DBus.Property."
1278
"EmitsChangedSignal": "false"})
798
1279
@dbus_service_property("org.example.Interface", signature="b",
799
1280
access="r")
800
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
801
"org.freedesktop.DBus.Property."
802
"EmitsChangedSignal": "false"})
803
1281
def Property_dbus_property(self):
804
1282
return dbus.Boolean(False)
1283
1284
See also the DBusObjectWithAnnotations class.
805
1285
"""
1286
806
1287
def decorator(func):
807
1288
func._dbus_annotations = annotations
808
1289
return func
1290
809
1291
return decorator
810
1292
811
1293
812
1294
class DBusPropertyException(dbus.exceptions.DBusException):
813
1295
"""A base class for D-Bus property-related exceptions
814
1296
"""
815
def __unicode__(self):
816
return unicode(str(self))
1297
pass
817
1298
818
1299
819
1300
class DBusPropertyAccessException(DBusPropertyException):
828
1309
pass
829
1310
830
1311
831
class DBusObjectWithProperties(dbus.service.Object):
832
"""A D-Bus object with properties.
833
834
Classes inheriting from this can use the dbus_service_property
835
decorator to expose methods as D-Bus properties. It exposes the
836
standard Get(), Set(), and GetAll() methods on the D-Bus.
1312
class DBusObjectWithAnnotations(dbus.service.Object):
1313
"""A D-Bus object with annotations.
1314
1315
Classes inheriting from this can use the dbus_annotations
1316
decorator to add annotations to methods or signals.
837
1317
"""
838
1318
839
1319
@staticmethod
840
1320
def _is_dbus_thing(thing):
841
1321
"""Returns a function testing if an attribute is a D-Bus thing
842
1322
843
1323
If called like _is_dbus_thing("method") it returns a function
844
1324
suitable for use as predicate to inspect.getmembers().
845
1325
"""
846
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1326
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
847
1327
False)
848
1328
849
1329
def _get_all_dbus_things(self, thing):
850
1330
"""Returns a generator of (name, attribute) pairs
851
1331
"""
852
return ((getattr(athing.__get__(self), "_dbus_name",
853
name),
1332
return ((getattr(athing.__get__(self), "_dbus_name", name),
854
1333
athing.__get__(self))
855
1334
for cls in self.__class__.__mro__
856
1335
for name, athing in
857
inspect.getmembers(cls,
858
self._is_dbus_thing(thing)))
859
1336
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1337
1338
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1339
out_signature="s",
1340
path_keyword='object_path',
1341
connection_keyword='connection')
1342
def Introspect(self, object_path, connection):
1343
"""Overloading of standard D-Bus method.
1344
1345
Inserts annotation tags on methods and signals.
1346
"""
1347
xmlstring = dbus.service.Object.Introspect(self, object_path,
1348
connection)
1349
try:
1350
document = xml.dom.minidom.parseString(xmlstring)
1351
1352
for if_tag in document.getElementsByTagName("interface"):
1353
# Add annotation tags
1354
for typ in ("method", "signal"):
1355
for tag in if_tag.getElementsByTagName(typ):
1356
annots = dict()
1357
for name, prop in (self.
1358
_get_all_dbus_things(typ)):
1359
if (name == tag.getAttribute("name")
1360
and prop._dbus_interface
1361
== if_tag.getAttribute("name")):
1362
annots.update(getattr(
1363
prop, "_dbus_annotations", {}))
1364
for name, value in annots.items():
1365
ann_tag = document.createElement(
1366
"annotation")
1367
ann_tag.setAttribute("name", name)
1368
ann_tag.setAttribute("value", value)
1369
tag.appendChild(ann_tag)
1370
# Add interface annotation tags
1371
for annotation, value in dict(
1372
itertools.chain.from_iterable(
1373
annotations().items()
1374
for name, annotations
1375
in self._get_all_dbus_things("interface")
1376
if name == if_tag.getAttribute("name")
1377
)).items():
1378
ann_tag = document.createElement("annotation")
1379
ann_tag.setAttribute("name", annotation)
1380
ann_tag.setAttribute("value", value)
1381
if_tag.appendChild(ann_tag)
1382
# Fix argument name for the Introspect method itself
1383
if (if_tag.getAttribute("name")
1384
== dbus.INTROSPECTABLE_IFACE):
1385
for cn in if_tag.getElementsByTagName("method"):
1386
if cn.getAttribute("name") == "Introspect":
1387
for arg in cn.getElementsByTagName("arg"):
1388
if (arg.getAttribute("direction")
1389
== "out"):
1390
arg.setAttribute("name",
1391
"xml_data")
1392
xmlstring = document.toxml("utf-8")
1393
document.unlink()
1394
except (AttributeError, xml.dom.DOMException,
1395
xml.parsers.expat.ExpatError) as error:
1396
logger.error("Failed to override Introspection method",
1397
exc_info=error)
1398
return xmlstring
1399
1400
1401
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1402
"""A D-Bus object with properties.
1403
1404
Classes inheriting from this can use the dbus_service_property
1405
decorator to expose methods as D-Bus properties. It exposes the
1406
standard Get(), Set(), and GetAll() methods on the D-Bus.
1407
"""
1408
860
1409
def _get_dbus_property(self, interface_name, property_name):
861
1410
"""Returns a bound method if one exists which is a D-Bus
862
1411
property with the specified name and interface.
863
1412
"""
864
for cls in self.__class__.__mro__:
865
for name, value in (inspect.getmembers
866
(cls,
867
self._is_dbus_thing("property"))):
1413
for cls in self.__class__.__mro__:
1414
for name, value in inspect.getmembers(
1415
cls, self._is_dbus_thing("property")):
868
1416
if (value._dbus_name == property_name
869
1417
and value._dbus_interface == interface_name):
870
1418
return value.__get__(self)
871
1419
872
1420
# No such property
873
raise DBusPropertyNotFound(self.dbus_object_path + ":"
874
+ interface_name + "."
875
+ property_name)
876
877
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1421
raise DBusPropertyNotFound("{}:{}.{}".format(
1422
self.dbus_object_path, interface_name, property_name))
1423
1424
@classmethod
1425
def _get_all_interface_names(cls):
1426
"""Get a sequence of all interfaces supported by an object"""
1427
return (name for name in set(getattr(getattr(x, attr),
1428
"_dbus_interface", None)
1429
for x in (inspect.getmro(cls))
1430
for attr in dir(x))
1431
if name is not None)
1432
1433
@dbus.service.method(dbus.PROPERTIES_IFACE,
1434
in_signature="ss",
878
1435
out_signature="v")
879
1436
def Get(self, interface_name, property_name):
880
1437
"""Standard D-Bus property Get() method, see D-Bus standard.
886
1443
if not hasattr(value, "variant_level"):
887
1444
return value
888
1445
return type(value)(value, variant_level=value.variant_level+1)
889
1446
890
1447
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
891
1448
def Set(self, interface_name, property_name, value):
892
1449
"""Standard D-Bus property Set() method, see D-Bus standard.
898
1455
# The byte_arrays option is not supported yet on
899
1456
# signatures other than "ay".
900
1457
if prop._dbus_signature != "ay":
901
raise ValueError
902
value = dbus.ByteArray(b''.join(chr(byte)
903
for byte in value))
1458
raise ValueError("Byte arrays not supported for non-"
1459
"'ay' signature {!r}"
1460
.format(prop._dbus_signature))
1461
value = dbus.ByteArray(bytes(value))
904
1462
prop(value)
905
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1463
1464
@dbus.service.method(dbus.PROPERTIES_IFACE,
1465
in_signature="s",
907
1466
out_signature="a{sv}")
908
1467
def GetAll(self, interface_name):
909
1468
"""Standard D-Bus property GetAll() method, see D-Bus
910
1469
standard.
911
1470
912
1471
Note: Will not include properties with access="write".
913
1472
"""
914
1473
properties = {}
924
1483
if not hasattr(value, "variant_level"):
925
1484
properties[name] = value
926
1485
continue
927
properties[name] = type(value)(value, variant_level=
928
value.variant_level+1)
1486
properties[name] = type(value)(
1487
value, variant_level=value.variant_level + 1)
929
1488
return dbus.Dictionary(properties, signature="sv")
930
1489
1490
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1491
def PropertiesChanged(self, interface_name, changed_properties,
1492
invalidated_properties):
1493
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1494
standard.
1495
"""
1496
pass
1497
931
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
932
1499
out_signature="s",
933
1500
path_keyword='object_path',
934
1501
connection_keyword='connection')
935
1502
def Introspect(self, object_path, connection):
936
1503
"""Overloading of standard D-Bus method.
937
1504
938
1505
Inserts property tags and interface annotation tags.
939
1506
"""
940
xmlstring = dbus.service.Object.Introspect(self, object_path,
941
connection)
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1508
object_path,
1509
connection)
942
1510
try:
943
1511
document = xml.dom.minidom.parseString(xmlstring)
1512
944
1513
def make_tag(document, name, prop):
945
1514
e = document.createElement("property")
946
1515
e.setAttribute("name", name)
947
1516
e.setAttribute("type", prop._dbus_signature)
948
1517
e.setAttribute("access", prop._dbus_access)
949
1518
return e
1519
950
1520
for if_tag in document.getElementsByTagName("interface"):
951
1521
# Add property tags
952
1522
for tag in (make_tag(document, name, prop)
955
1525
if prop._dbus_interface
956
1526
== if_tag.getAttribute("name")):
957
1527
if_tag.appendChild(tag)
958
# Add annotation tags
959
for typ in ("method", "signal", "property"):
960
for tag in if_tag.getElementsByTagName(typ):
961
annots = dict()
962
for name, prop in (self.
963
_get_all_dbus_things(typ)):
964
if (name == tag.getAttribute("name")
965
and prop._dbus_interface
966
== if_tag.getAttribute("name")):
967
annots.update(getattr
968
(prop,
969
"_dbus_annotations",
970
{}))
971
for name, value in annots.iteritems():
972
ann_tag = document.createElement(
973
"annotation")
974
ann_tag.setAttribute("name", name)
975
ann_tag.setAttribute("value", value)
976
tag.appendChild(ann_tag)
977
# Add interface annotation tags
978
for annotation, value in dict(
979
itertools.chain(
980
*(annotations().iteritems()
981
for name, annotations in
982
self._get_all_dbus_things("interface")
983
if name == if_tag.getAttribute("name")
984
))).iteritems():
985
ann_tag = document.createElement("annotation")
986
ann_tag.setAttribute("name", annotation)
987
ann_tag.setAttribute("value", value)
988
if_tag.appendChild(ann_tag)
1528
# Add annotation tags for properties
1529
for tag in if_tag.getElementsByTagName("property"):
1530
annots = dict()
1531
for name, prop in self._get_all_dbus_things(
1532
"property"):
1533
if (name == tag.getAttribute("name")
1534
and prop._dbus_interface
1535
== if_tag.getAttribute("name")):
1536
annots.update(getattr(
1537
prop, "_dbus_annotations", {}))
1538
for name, value in annots.items():
1539
ann_tag = document.createElement(
1540
"annotation")
1541
ann_tag.setAttribute("name", name)
1542
ann_tag.setAttribute("value", value)
1543
tag.appendChild(ann_tag)
989
1544
# Add the names to the return values for the
990
1545
# "org.freedesktop.DBus.Properties" methods
991
1546
if (if_tag.getAttribute("name")
1010
1565
return xmlstring
1011
1566
1012
1567
1013
def datetime_to_dbus (dt, variant_level=0):
1568
try:
1569
dbus.OBJECT_MANAGER_IFACE
1570
except AttributeError:
1571
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1572
1573
1574
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1575
"""A D-Bus object with an ObjectManager.
1576
1577
Classes inheriting from this exposes the standard
1578
GetManagedObjects call and the InterfacesAdded and
1579
InterfacesRemoved signals on the standard
1580
"org.freedesktop.DBus.ObjectManager" interface.
1581
1582
Note: No signals are sent automatically; they must be sent
1583
manually.
1584
"""
1585
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1586
out_signature="a{oa{sa{sv}}}")
1587
def GetManagedObjects(self):
1588
"""This function must be overridden"""
1589
raise NotImplementedError()
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1592
signature="oa{sa{sv}}")
1593
def InterfacesAdded(self, object_path, interfaces_and_properties):
1594
pass
1595
1596
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1597
def InterfacesRemoved(self, object_path, interfaces):
1598
pass
1599
1600
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1601
out_signature="s",
1602
path_keyword='object_path',
1603
connection_keyword='connection')
1604
def Introspect(self, object_path, connection):
1605
"""Overloading of standard D-Bus method.
1606
1607
Override return argument name of GetManagedObjects to be
1608
"objpath_interfaces_and_properties"
1609
"""
1610
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1611
object_path,
1612
connection)
1613
try:
1614
document = xml.dom.minidom.parseString(xmlstring)
1615
1616
for if_tag in document.getElementsByTagName("interface"):
1617
# Fix argument name for the GetManagedObjects method
1618
if (if_tag.getAttribute("name")
1619
== dbus.OBJECT_MANAGER_IFACE):
1620
for cn in if_tag.getElementsByTagName("method"):
1621
if (cn.getAttribute("name")
1622
== "GetManagedObjects"):
1623
for arg in cn.getElementsByTagName("arg"):
1624
if (arg.getAttribute("direction")
1625
== "out"):
1626
arg.setAttribute(
1627
"name",
1628
"objpath_interfaces"
1629
"_and_properties")
1630
xmlstring = document.toxml("utf-8")
1631
document.unlink()
1632
except (AttributeError, xml.dom.DOMException,
1633
xml.parsers.expat.ExpatError) as error:
1634
logger.error("Failed to override Introspection method",
1635
exc_info=error)
1636
return xmlstring
1637
1638
1639
def datetime_to_dbus(dt, variant_level=0):
1014
1640
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1015
1641
if dt is None:
1016
return dbus.String("", variant_level = variant_level)
1017
return dbus.String(dt.isoformat(),
1018
variant_level=variant_level)
1019
1020
1021
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1022
.__metaclass__):
1023
"""Applied to an empty subclass of a D-Bus object, this metaclass
1024
will add additional D-Bus attributes matching a certain pattern.
1642
return dbus.String("", variant_level=variant_level)
1643
return dbus.String(dt.isoformat(), variant_level=variant_level)
1644
1645
1646
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1647
"""A class decorator; applied to a subclass of
1648
dbus.service.Object, it will add alternate D-Bus attributes with
1649
interface names according to the "alt_interface_names" mapping.
1650
Usage:
1651
1652
@alternate_dbus_interfaces({"org.example.Interface":
1653
"net.example.AlternateInterface"})
1654
class SampleDBusObject(dbus.service.Object):
1655
@dbus.service.method("org.example.Interface")
1656
def SampleDBusMethod():
1657
pass
1658
1659
The above "SampleDBusMethod" on "SampleDBusObject" will be
1660
reachable via two interfaces: "org.example.Interface" and
1661
"net.example.AlternateInterface", the latter of which will have
1662
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1663
"true", unless "deprecate" is passed with a False value.
1664
1665
This works for methods and signals, and also for D-Bus properties
1666
(from DBusObjectWithProperties) and interfaces (from the
1667
dbus_interface_annotations decorator).
1025
1668
"""
1026
def __new__(mcs, name, bases, attr):
1027
# Go through all the base classes which could have D-Bus
1028
# methods, signals, or properties in them
1029
old_interface_names = []
1030
for base in (b for b in bases
1031
if issubclass(b, dbus.service.Object)):
1032
# Go though all attributes of the base class
1033
for attrname, attribute in inspect.getmembers(base):
1669
1670
def wrapper(cls):
1671
for orig_interface_name, alt_interface_name in (
1672
alt_interface_names.items()):
1673
attr = {}
1674
interface_names = set()
1675
# Go though all attributes of the class
1676
for attrname, attribute in inspect.getmembers(cls):
1034
1677
# Ignore non-D-Bus attributes, and D-Bus attributes
1035
1678
# with the wrong interface name
1036
1679
if (not hasattr(attribute, "_dbus_interface")
1037
or not attribute._dbus_interface
1038
.startswith("se.recompile.Mandos")):
1680
or not attribute._dbus_interface.startswith(
1681
orig_interface_name)):
1039
1682
continue
1040
1683
# Create an alternate D-Bus interface name based on
1041
1684
# the current name
1042
alt_interface = (attribute._dbus_interface
1043
.replace("se.recompile.Mandos",
1044
"se.bsnet.fukt.Mandos"))
1045
if alt_interface != attribute._dbus_interface:
1046
old_interface_names.append(alt_interface)
1685
alt_interface = attribute._dbus_interface.replace(
1686
orig_interface_name, alt_interface_name)
1687
interface_names.add(alt_interface)
1047
1688
# Is this a D-Bus signal?
1048
1689
if getattr(attribute, "_dbus_is_signal", False):
1049
# Extract the original non-method function by
1050
# black magic
1051
nonmethod_func = (dict(
1690
# Extract the original non-method undecorated
1691
# function by black magic
1692
if sys.version_info.major == 2:
1693
nonmethod_func = (dict(
1052
1694
zip(attribute.func_code.co_freevars,
1053
attribute.__closure__))["func"]
1054
.cell_contents)
1695
attribute.__closure__))
1696
["func"].cell_contents)
1697
else:
1698
nonmethod_func = (dict(
1699
zip(attribute.__code__.co_freevars,
1700
attribute.__closure__))
1701
["func"].cell_contents)
1055
1702
# Create a new, but exactly alike, function
1056
1703
# object, and decorate it to be a new D-Bus signal
1057
1704
# with the alternate D-Bus interface name
1058
new_function = (dbus.service.signal
1059
(alt_interface,
1060
attribute._dbus_signature)
1061
(types.FunctionType(
1062
nonmethod_func.func_code,
1063
nonmethod_func.func_globals,
1064
nonmethod_func.func_name,
1065
nonmethod_func.func_defaults,
1066
nonmethod_func.func_closure)))
1705
new_function = copy_function(nonmethod_func)
1706
new_function = (dbus.service.signal(
1707
alt_interface,
1708
attribute._dbus_signature)(new_function))
1067
1709
# Copy annotations, if any
1068
1710
try:
1069
new_function._dbus_annotations = (
1070
dict(attribute._dbus_annotations))
1711
new_function._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1071
1713
except AttributeError:
1072
1714
pass
1715
1073
1716
# Define a creator of a function to call both the
1074
# old and new functions, so both the old and new
1075
# signals gets sent when the function is called
1717
# original and alternate functions, so both the
1718
# original and alternate signals gets sent when
1719
# the function is called
1076
1720
def fixscope(func1, func2):
1077
1721
"""This function is a scope container to pass
1078
1722
func1 and func2 to the "call_both" function
1079
1723
outside of its arguments"""
1724
1725
@functools.wraps(func2)
1080
1726
def call_both(*args, **kwargs):
1081
1727
"""This function will emit two D-Bus
1082
1728
signals by calling func1 and func2"""
1083
1729
func1(*args, **kwargs)
1084
1730
func2(*args, **kwargs)
1731
# Make wrapper function look like a D-Bus
1732
# signal
1733
for name, attr in inspect.getmembers(func2):
1734
if name.startswith("_dbus_"):
1735
setattr(call_both, name, attr)
1736
1085
1737
return call_both
1086
1738
# Create the "call_both" function and add it to
1087
1739
# the class
1088
attr[attrname] = fixscope(attribute,
1089
new_function)
1740
attr[attrname] = fixscope(attribute, new_function)
1090
1741
# Is this a D-Bus method?
1091
1742
elif getattr(attribute, "_dbus_is_method", False):
1092
1743
# Create a new, but exactly alike, function
1093
1744
# object. Decorate it to be a new D-Bus method
1094
1745
# with the alternate D-Bus interface name. Add it
1095
1746
# to the class.
1096
attr[attrname] = (dbus.service.method
1097
(alt_interface,
1098
attribute._dbus_in_signature,
1099
attribute._dbus_out_signature)
1100
(types.FunctionType
1101
(attribute.func_code,
1102
attribute.func_globals,
1103
attribute.func_name,
1104
attribute.func_defaults,
1105
attribute.func_closure)))
1747
attr[attrname] = (
1748
dbus.service.method(
1749
alt_interface,
1750
attribute._dbus_in_signature,
1751
attribute._dbus_out_signature)
1752
(copy_function(attribute)))
1106
1753
# Copy annotations, if any
1107
1754
try:
1108
attr[attrname]._dbus_annotations = (
1109
dict(attribute._dbus_annotations))
1755
attr[attrname]._dbus_annotations = dict(
1756
attribute._dbus_annotations)
1110
1757
except AttributeError:
1111
1758
pass
1112
1759
# Is this a D-Bus property?
1115
1762
# object, and decorate it to be a new D-Bus
1116
1763
# property with the alternate D-Bus interface
1117
1764
# name. Add it to the class.
1118
attr[attrname] = (dbus_service_property
1119
(alt_interface,
1120
attribute._dbus_signature,
1121
attribute._dbus_access,
1122
attribute
1123
._dbus_get_args_options
1124
["byte_arrays"])
1125
(types.FunctionType
1126
(attribute.func_code,
1127
attribute.func_globals,
1128
attribute.func_name,
1129
attribute.func_defaults,
1130
attribute.func_closure)))
1765
attr[attrname] = (dbus_service_property(
1766
alt_interface, attribute._dbus_signature,
1767
attribute._dbus_access,
1768
attribute._dbus_get_args_options
1769
["byte_arrays"])
1770
(copy_function(attribute)))
1131
1771
# Copy annotations, if any
1132
1772
try:
1133
attr[attrname]._dbus_annotations = (
1134
dict(attribute._dbus_annotations))
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1135
1775
except AttributeError:
1136
1776
pass
1137
1777
# Is this a D-Bus interface?
1140
1780
# object. Decorate it to be a new D-Bus interface
1141
1781
# with the alternate D-Bus interface name. Add it
1142
1782
# to the class.
1143
attr[attrname] = (dbus_interface_annotations
1144
(alt_interface)
1145
(types.FunctionType
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1151
# Deprecate all old interfaces
1152
basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"
1153
for old_interface_name in old_interface_names:
1154
@dbus_interface_annotations(old_interface_name)
1155
def func(self):
1156
return { "org.freedesktop.DBus.Deprecated": "true" }
1157
# Find an unused name
1158
for aname in (basename.format(i) for i in
1159
itertools.count()):
1160
if aname not in attr:
1161
attr[aname] = func
1162
break
1163
return type.__new__(mcs, name, bases, attr)
1164
1165
1783
attr[attrname] = (
1784
dbus_interface_annotations(alt_interface)
1785
(copy_function(attribute)))
1786
if deprecate:
1787
# Deprecate all alternate interfaces
1788
iname = "_AlternateDBusNames_interface_annotation{}"
1789
for interface_name in interface_names:
1790
1791
@dbus_interface_annotations(interface_name)
1792
def func(self):
1793
return {"org.freedesktop.DBus.Deprecated":
1794
"true"}
1795
# Find an unused name
1796
for aname in (iname.format(i)
1797
for i in itertools.count()):
1798
if aname not in attr:
1799
attr[aname] = func
1800
break
1801
if interface_names:
1802
# Replace the class with a new subclass of it with
1803
# methods, signals, etc. as created above.
1804
if sys.version_info.major == 2:
1805
cls = type(b"{}Alternate".format(cls.__name__),
1806
(cls, ), attr)
1807
else:
1808
cls = type("{}Alternate".format(cls.__name__),
1809
(cls, ), attr)
1810
return cls
1811
1812
return wrapper
1813
1814
1815
@alternate_dbus_interfaces({"se.recompile.Mandos":
1816
"se.bsnet.fukt.Mandos"})
1166
1817
class ClientDBus(Client, DBusObjectWithProperties):
1167
1818
"""A Client class using D-Bus
1168
1819
1169
1820
Attributes:
1170
1821
dbus_object_path: dbus.ObjectPath
1171
1822
bus: dbus.SystemBus()
1172
1823
"""
1173
1824
1174
1825
runtime_expansions = (Client.runtime_expansions
1175
+ ("dbus_object_path",))
1176
1826
+ ("dbus_object_path", ))
1827
1828
_interface = "se.recompile.Mandos.Client"
1829
1177
1830
# dbus.service.Object doesn't use super(), so we can't either.
1178
1179
def __init__(self, bus = None, *args, **kwargs):
1831
1832
def __init__(self, bus=None, *args, **kwargs):
1180
1833
self.bus = bus
1181
1834
Client.__init__(self, *args, **kwargs)
1182
1835
# Only now, when this client is initialized, can it show up on
1183
1836
# the D-Bus
1184
client_object_name = unicode(self.name).translate(
1837
client_object_name = str(self.name).translate(
1185
1838
{ord("."): ord("_"),
1186
1839
ord("-"): ord("_")})
1187
self.dbus_object_path = (dbus.ObjectPath
1188
("/clients/" + client_object_name))
1840
self.dbus_object_path = dbus.ObjectPath(
1841
"/clients/" + client_object_name)
1189
1842
DBusObjectWithProperties.__init__(self, self.bus,
1190
1843
self.dbus_object_path)
1191
1192
def notifychangeproperty(transform_func,
1193
dbus_name, type_func=lambda x: x,
1194
variant_level=1):
1844
1845
def notifychangeproperty(transform_func, dbus_name,
1846
type_func=lambda x: x,
1847
variant_level=1,
1848
invalidate_only=False,
1849
_interface=_interface):
1195
1850
""" Modify a variable so that it's a property which announces
1196
1851
its changes to DBus.
1197
1852
1198
1853
transform_fun: Function that takes a value and a variant_level
1199
1854
and transforms it to a D-Bus type.
1200
1855
dbus_name: D-Bus name of the variable
1202
1857
to the D-Bus. Default: no transform
1203
1858
variant_level: D-Bus variant level. Default: 1
1204
1859
"""
1205
attrname = "_{0}".format(dbus_name)
1860
attrname = "_{}".format(dbus_name)
1861
1206
1862
def setter(self, value):
1207
1863
if hasattr(self, "dbus_object_path"):
1208
1864
if (not hasattr(self, attrname) or
1209
1865
type_func(getattr(self, attrname, None))
1210
1866
!= type_func(value)):
1211
dbus_value = transform_func(type_func(value),
1212
variant_level
1213
=variant_level)
1214
self.PropertyChanged(dbus.String(dbus_name),
1215
dbus_value)
1867
if invalidate_only:
1868
self.PropertiesChanged(
1869
_interface, dbus.Dictionary(),
1870
dbus.Array((dbus_name, )))
1871
else:
1872
dbus_value = transform_func(
1873
type_func(value),
1874
variant_level=variant_level)
1875
self.PropertyChanged(dbus.String(dbus_name),
1876
dbus_value)
1877
self.PropertiesChanged(
1878
_interface,
1879
dbus.Dictionary({dbus.String(dbus_name):
1880
dbus_value}),
1881
dbus.Array())
1216
1882
setattr(self, attrname, value)
1217
1883
1218
1884
return property(lambda self: getattr(self, attrname), setter)
1219
1220
1885
1221
1886
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1222
1887
approvals_pending = notifychangeproperty(dbus.Boolean,
1223
1888
"ApprovalPending",
1224
type_func = bool)
1889
type_func=bool)
1225
1890
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1226
1891
last_enabled = notifychangeproperty(datetime_to_dbus,
1227
1892
"LastEnabled")
1228
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1229
type_func = lambda checker:
1230
checker is not None)
1893
checker = notifychangeproperty(
1894
dbus.Boolean, "CheckerRunning",
1895
type_func=lambda checker: checker is not None)
1231
1896
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1232
1897
"LastCheckedOK")
1233
1898
last_checker_status = notifychangeproperty(dbus.Int16,
1236
1901
datetime_to_dbus, "LastApprovalRequest")
1237
1902
approved_by_default = notifychangeproperty(dbus.Boolean,
1238
1903
"ApprovedByDefault")
1239
approval_delay = notifychangeproperty(dbus.UInt64,
1240
"ApprovalDelay",
1241
type_func =
1242
timedelta_to_milliseconds)
1904
approval_delay = notifychangeproperty(
1905
dbus.UInt64, "ApprovalDelay",
1906
type_func=lambda td: td.total_seconds() * 1000)
1243
1907
approval_duration = notifychangeproperty(
1244
1908
dbus.UInt64, "ApprovalDuration",
1245
type_func = timedelta_to_milliseconds)
1909
type_func=lambda td: td.total_seconds() * 1000)
1246
1910
host = notifychangeproperty(dbus.String, "Host")
1247
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1248
type_func =
1249
timedelta_to_milliseconds)
1911
timeout = notifychangeproperty(
1912
dbus.UInt64, "Timeout",
1913
type_func=lambda td: td.total_seconds() * 1000)
1250
1914
extended_timeout = notifychangeproperty(
1251
1915
dbus.UInt64, "ExtendedTimeout",
1252
type_func = timedelta_to_milliseconds)
1253
interval = notifychangeproperty(dbus.UInt64,
1254
"Interval",
1255
type_func =
1256
timedelta_to_milliseconds)
1916
type_func=lambda td: td.total_seconds() * 1000)
1917
interval = notifychangeproperty(
1918
dbus.UInt64, "Interval",
1919
type_func=lambda td: td.total_seconds() * 1000)
1257
1920
checker_command = notifychangeproperty(dbus.String, "Checker")
1258
1921
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1922
invalidate_only=True)
1923
1259
1924
del notifychangeproperty
1260
1925
1261
1926
def __del__(self, *args, **kwargs):
1262
1927
try:
1263
1928
self.remove_from_connection()
1266
1931
if hasattr(DBusObjectWithProperties, "__del__"):
1267
1932
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1268
1933
Client.__del__(self, *args, **kwargs)
1269
1270
def checker_callback(self, pid, condition, command,
1271
*args, **kwargs):
1272
self.checker_callback_tag = None
1273
self.checker = None
1274
if os.WIFEXITED(condition):
1275
exitstatus = os.WEXITSTATUS(condition)
1934
1935
def checker_callback(self, source, condition,
1936
connection, command, *args, **kwargs):
1937
ret = Client.checker_callback(self, source, condition,
1938
connection, command, *args,
1939
**kwargs)
1940
exitstatus = self.last_checker_status
1941
if exitstatus >= 0:
1276
1942
# Emit D-Bus signal
1277
1943
self.CheckerCompleted(dbus.Int16(exitstatus),
1278
dbus.Int64(condition),
1944
# This is specific to GNU libC
1945
dbus.Int64(exitstatus << 8),
1279
1946
dbus.String(command))
1280
1947
else:
1281
1948
# Emit D-Bus signal
1282
1949
self.CheckerCompleted(dbus.Int16(-1),
1283
dbus.Int64(condition),
1950
dbus.Int64(
1951
# This is specific to GNU libC
1952
(exitstatus << 8)
1953
| self.last_checker_signal),
1284
1954
dbus.String(command))
1285
1286
return Client.checker_callback(self, pid, condition, command,
1287
*args, **kwargs)
1288
1955
return ret
1956
1289
1957
def start_checker(self, *args, **kwargs):
1290
old_checker = self.checker
1291
if self.checker is not None:
1292
old_checker_pid = self.checker.pid
1293
else:
1294
old_checker_pid = None
1958
old_checker_pid = getattr(self.checker, "pid", None)
1295
1959
r = Client.start_checker(self, *args, **kwargs)
1296
1960
# Only if new checker process was started
1297
1961
if (self.checker is not None
1299
1963
# Emit D-Bus signal
1300
1964
self.CheckerStarted(self.current_checker_command)
1301
1965
return r
1302
1966
1303
1967
def _reset_approved(self):
1304
1968
self.approved = None
1305
1969
return False
1306
1970
1307
1971
def approve(self, value=True):
1308
self.send_changedstate()
1309
1972
self.approved = value
1310
gobject.timeout_add(timedelta_to_milliseconds
1311
(self.approval_duration),
1312
self._reset_approved)
1313
1314
1315
## D-Bus methods, signals & properties
1316
_interface = "se.recompile.Mandos.Client"
1317
1318
## Interfaces
1319
1320
@dbus_interface_annotations(_interface)
1321
def _foo(self):
1322
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1323
"false"}
1324
1325
## Signals
1326
1973
GLib.timeout_add(int(self.approval_duration.total_seconds()
1974
* 1000), self._reset_approved)
1975
self.send_changedstate()
1976
1977
# D-Bus methods, signals & properties
1978
1979
# Interfaces
1980
1981
# Signals
1982
1327
1983
# CheckerCompleted - signal
1328
1984
@dbus.service.signal(_interface, signature="nxs")
1329
1985
def CheckerCompleted(self, exitcode, waitstatus, command):
1330
1986
"D-Bus signal"
1331
1987
pass
1332
1988
1333
1989
# CheckerStarted - signal
1334
1990
@dbus.service.signal(_interface, signature="s")
1335
1991
def CheckerStarted(self, command):
1336
1992
"D-Bus signal"
1337
1993
pass
1338
1994
1339
1995
# PropertyChanged - signal
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1340
1997
@dbus.service.signal(_interface, signature="sv")
1341
1998
def PropertyChanged(self, property, value):
1342
1999
"D-Bus signal"
1343
2000
pass
1344
2001
1345
2002
# GotSecret - signal
1346
2003
@dbus.service.signal(_interface)
1347
2004
def GotSecret(self):
1350
2007
server to mandos-client
1351
2008
"""
1352
2009
pass
1353
2010
1354
2011
# Rejected - signal
1355
2012
@dbus.service.signal(_interface, signature="s")
1356
2013
def Rejected(self, reason):
1357
2014
"D-Bus signal"
1358
2015
pass
1359
2016
1360
2017
# NeedApproval - signal
1361
2018
@dbus.service.signal(_interface, signature="tb")
1362
2019
def NeedApproval(self, timeout, default):
1363
2020
"D-Bus signal"
1364
2021
return self.need_approval()
1365
1366
## Methods
1367
2022
2023
# Methods
2024
1368
2025
# Approve - method
1369
2026
@dbus.service.method(_interface, in_signature="b")
1370
2027
def Approve(self, value):
1371
2028
self.approve(value)
1372
2029
1373
2030
# CheckedOK - method
1374
2031
@dbus.service.method(_interface)
1375
2032
def CheckedOK(self):
1376
2033
self.checked_ok()
1377
2034
1378
2035
# Enable - method
2036
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1379
2037
@dbus.service.method(_interface)
1380
2038
def Enable(self):
1381
2039
"D-Bus method"
1382
2040
self.enable()
1383
2041
1384
2042
# StartChecker - method
2043
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1385
2044
@dbus.service.method(_interface)
1386
2045
def StartChecker(self):
1387
2046
"D-Bus method"
1388
2047
self.start_checker()
1389
2048
1390
2049
# Disable - method
2050
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1391
2051
@dbus.service.method(_interface)
1392
2052
def Disable(self):
1393
2053
"D-Bus method"
1394
2054
self.disable()
1395
2055
1396
2056
# StopChecker - method
2057
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1397
2058
@dbus.service.method(_interface)
1398
2059
def StopChecker(self):
1399
2060
self.stop_checker()
1400
1401
## Properties
1402
2061
2062
# Properties
2063
1403
2064
# ApprovalPending - property
1404
2065
@dbus_service_property(_interface, signature="b", access="read")
1405
2066
def ApprovalPending_dbus_property(self):
1406
2067
return dbus.Boolean(bool(self.approvals_pending))
1407
2068
1408
2069
# ApprovedByDefault - property
1409
@dbus_service_property(_interface, signature="b",
2070
@dbus_service_property(_interface,
2071
signature="b",
1410
2072
access="readwrite")
1411
2073
def ApprovedByDefault_dbus_property(self, value=None):
1412
2074
if value is None: # get
1413
2075
return dbus.Boolean(self.approved_by_default)
1414
2076
self.approved_by_default = bool(value)
1415
2077
1416
2078
# ApprovalDelay - property
1417
@dbus_service_property(_interface, signature="t",
2079
@dbus_service_property(_interface,
2080
signature="t",
1418
2081
access="readwrite")
1419
2082
def ApprovalDelay_dbus_property(self, value=None):
1420
2083
if value is None: # get
1421
return dbus.UInt64(self.approval_delay_milliseconds())
2084
return dbus.UInt64(self.approval_delay.total_seconds()
2085
* 1000)
1422
2086
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1423
2087
1424
2088
# ApprovalDuration - property
1425
@dbus_service_property(_interface, signature="t",
2089
@dbus_service_property(_interface,
2090
signature="t",
1426
2091
access="readwrite")
1427
2092
def ApprovalDuration_dbus_property(self, value=None):
1428
2093
if value is None: # get
1429
return dbus.UInt64(timedelta_to_milliseconds(
1430
self.approval_duration))
2094
return dbus.UInt64(self.approval_duration.total_seconds()
2095
* 1000)
1431
2096
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1432
2097
1433
2098
# Name - property
2099
@dbus_annotations(
2100
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1434
2101
@dbus_service_property(_interface, signature="s", access="read")
1435
2102
def Name_dbus_property(self):
1436
2103
return dbus.String(self.name)
1437
2104
2105
# KeyID - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2108
@dbus_service_property(_interface, signature="s", access="read")
2109
def KeyID_dbus_property(self):
2110
return dbus.String(self.key_id)
2111
1438
2112
# Fingerprint - property
2113
@dbus_annotations(
2114
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1439
2115
@dbus_service_property(_interface, signature="s", access="read")
1440
2116
def Fingerprint_dbus_property(self):
1441
2117
return dbus.String(self.fingerprint)
1442
2118
1443
2119
# Host - property
1444
@dbus_service_property(_interface, signature="s",
2120
@dbus_service_property(_interface,
2121
signature="s",
1445
2122
access="readwrite")
1446
2123
def Host_dbus_property(self, value=None):
1447
2124
if value is None: # get
1448
2125
return dbus.String(self.host)
1449
self.host = unicode(value)
1450
2126
self.host = str(value)
2127
1451
2128
# Created - property
2129
@dbus_annotations(
2130
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1452
2131
@dbus_service_property(_interface, signature="s", access="read")
1453
2132
def Created_dbus_property(self):
1454
2133
return datetime_to_dbus(self.created)
1455
2134
1456
2135
# LastEnabled - property
1457
2136
@dbus_service_property(_interface, signature="s", access="read")
1458
2137
def LastEnabled_dbus_property(self):
1459
2138
return datetime_to_dbus(self.last_enabled)
1460
2139
1461
2140
# Enabled - property
1462
@dbus_service_property(_interface, signature="b",
2141
@dbus_service_property(_interface,
2142
signature="b",
1463
2143
access="readwrite")
1464
2144
def Enabled_dbus_property(self, value=None):
1465
2145
if value is None: # get
1468
2148
self.enable()
1469
2149
else:
1470
2150
self.disable()
1471
2151
1472
2152
# LastCheckedOK - property
1473
@dbus_service_property(_interface, signature="s",
2153
@dbus_service_property(_interface,
2154
signature="s",
1474
2155
access="readwrite")
1475
2156
def LastCheckedOK_dbus_property(self, value=None):
1476
2157
if value is not None:
1477
2158
self.checked_ok()
1478
2159
return
1479
2160
return datetime_to_dbus(self.last_checked_ok)
1480
2161
1481
2162
# LastCheckerStatus - property
1482
@dbus_service_property(_interface, signature="n",
1483
access="read")
2163
@dbus_service_property(_interface, signature="n", access="read")
1484
2164
def LastCheckerStatus_dbus_property(self):
1485
2165
return dbus.Int16(self.last_checker_status)
1486
2166
1487
2167
# Expires - property
1488
2168
@dbus_service_property(_interface, signature="s", access="read")
1489
2169
def Expires_dbus_property(self):
1490
2170
return datetime_to_dbus(self.expires)
1491
2171
1492
2172
# LastApprovalRequest - property
1493
2173
@dbus_service_property(_interface, signature="s", access="read")
1494
2174
def LastApprovalRequest_dbus_property(self):
1495
2175
return datetime_to_dbus(self.last_approval_request)
1496
2176
1497
2177
# Timeout - property
1498
@dbus_service_property(_interface, signature="t",
2178
@dbus_service_property(_interface,
2179
signature="t",
1499
2180
access="readwrite")
1500
2181
def Timeout_dbus_property(self, value=None):
1501
2182
if value is None: # get
1502
return dbus.UInt64(self.timeout_milliseconds())
2183
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2184
old_timeout = self.timeout
1503
2185
self.timeout = datetime.timedelta(0, 0, 0, value)
1504
# Reschedule timeout
2186
# Reschedule disabling
1505
2187
if self.enabled:
1506
2188
now = datetime.datetime.utcnow()
1507
time_to_die = timedelta_to_milliseconds(
1508
(self.last_checked_ok + self.timeout) - now)
1509
if time_to_die <= 0:
2189
self.expires += self.timeout - old_timeout
2190
if self.expires <= now:
1510
2191
# The timeout has passed
1511
2192
self.disable()
1512
2193
else:
1513
self.expires = (now +
1514
datetime.timedelta(milliseconds =
1515
time_to_die))
1516
2194
if (getattr(self, "disable_initiator_tag", None)
1517
2195
is None):
1518
2196
return
1519
gobject.source_remove(self.disable_initiator_tag)
1520
self.disable_initiator_tag = (gobject.timeout_add
1521
(time_to_die,
1522
self.disable))
1523
2197
GLib.source_remove(self.disable_initiator_tag)
2198
self.disable_initiator_tag = GLib.timeout_add(
2199
int((self.expires - now).total_seconds() * 1000),
2200
self.disable)
2201
1524
2202
# ExtendedTimeout - property
1525
@dbus_service_property(_interface, signature="t",
2203
@dbus_service_property(_interface,
2204
signature="t",
1526
2205
access="readwrite")
1527
2206
def ExtendedTimeout_dbus_property(self, value=None):
1528
2207
if value is None: # get
1529
return dbus.UInt64(self.extended_timeout_milliseconds())
2208
return dbus.UInt64(self.extended_timeout.total_seconds()
2209
* 1000)
1530
2210
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1531
2211
1532
2212
# Interval - property
1533
@dbus_service_property(_interface, signature="t",
2213
@dbus_service_property(_interface,
2214
signature="t",
1534
2215
access="readwrite")
1535
2216
def Interval_dbus_property(self, value=None):
1536
2217
if value is None: # get
1537
return dbus.UInt64(self.interval_milliseconds())
2218
return dbus.UInt64(self.interval.total_seconds() * 1000)
1538
2219
self.interval = datetime.timedelta(0, 0, 0, value)
1539
2220
if getattr(self, "checker_initiator_tag", None) is None:
1540
2221
return
1541
2222
if self.enabled:
1542
2223
# Reschedule checker run
1543
gobject.source_remove(self.checker_initiator_tag)
1544
self.checker_initiator_tag = (gobject.timeout_add
1545
(value, self.start_checker))
1546
self.start_checker() # Start one now, too
1547
2224
GLib.source_remove(self.checker_initiator_tag)
2225
self.checker_initiator_tag = GLib.timeout_add(
2226
value, self.start_checker)
2227
self.start_checker() # Start one now, too
2228
1548
2229
# Checker - property
1549
@dbus_service_property(_interface, signature="s",
2230
@dbus_service_property(_interface,
2231
signature="s",
1550
2232
access="readwrite")
1551
2233
def Checker_dbus_property(self, value=None):
1552
2234
if value is None: # get
1553
2235
return dbus.String(self.checker_command)
1554
self.checker_command = unicode(value)
1555
2236
self.checker_command = str(value)
2237
1556
2238
# CheckerRunning - property
1557
@dbus_service_property(_interface, signature="b",
2239
@dbus_service_property(_interface,
2240
signature="b",
1558
2241
access="readwrite")
1559
2242
def CheckerRunning_dbus_property(self, value=None):
1560
2243
if value is None: # get
1563
2246
self.start_checker()
1564
2247
else:
1565
2248
self.stop_checker()
1566
2249
1567
2250
# ObjectPath - property
2251
@dbus_annotations(
2252
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2253
"org.freedesktop.DBus.Deprecated": "true"})
1568
2254
@dbus_service_property(_interface, signature="o", access="read")
1569
2255
def ObjectPath_dbus_property(self):
1570
return self.dbus_object_path # is already a dbus.ObjectPath
1571
2256
return self.dbus_object_path # is already a dbus.ObjectPath
2257
1572
2258
# Secret = property
1573
@dbus_service_property(_interface, signature="ay",
1574
access="write", byte_arrays=True)
2259
@dbus_annotations(
2260
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2261
"invalidates"})
2262
@dbus_service_property(_interface,
2263
signature="ay",
2264
access="write",
2265
byte_arrays=True)
1575
2266
def Secret_dbus_property(self, value):
1576
self.secret = str(value)
1577
2267
self.secret = bytes(value)
2268
1578
2269
del _interface
1579
2270
1580
2271
1581
class ProxyClient(object):
1582
def __init__(self, child_pipe, fpr, address):
2272
class ProxyClient:
2273
def __init__(self, child_pipe, key_id, fpr, address):
1583
2274
self._pipe = child_pipe
1584
self._pipe.send(('init', fpr, address))
2275
self._pipe.send(('init', key_id, fpr, address))
1585
2276
if not self._pipe.recv():
1586
raise KeyError()
1587
2277
raise KeyError(key_id or fpr)
2278
1588
2279
def __getattribute__(self, name):
1589
2280
if name == '_pipe':
1590
2281
return super(ProxyClient, self).__getattribute__(name)
1593
2284
if data[0] == 'data':
1594
2285
return data[1]
1595
2286
if data[0] == 'function':
2287
1596
2288
def func(*args, **kwargs):
1597
2289
self._pipe.send(('funcall', name, args, kwargs))
1598
2290
return self._pipe.recv()[1]
2291
1599
2292
return func
1600
2293
1601
2294
def __setattr__(self, name, value):
1602
2295
if name == '_pipe':
1603
2296
return super(ProxyClient, self).__setattr__(name, value)
1604
2297
self._pipe.send(('setattr', name, value))
1605
2298
1606
2299
1607
class ClientDBusTransitional(ClientDBus):
1608
__metaclass__ = AlternateDBusNamesMetaclass
1609
1610
1611
2300
class ClientHandler(socketserver.BaseRequestHandler, object):
1612
2301
"""A class to handle client connections.
1613
2302
1614
2303
Instantiated once for each connection to handle it.
1615
2304
Note: This will run in its own forked process."""
1616
2305
1617
2306
def handle(self):
1618
2307
with contextlib.closing(self.server.child_pipe) as child_pipe:
1619
2308
logger.info("TCP connection from: %s",
1620
unicode(self.client_address))
2309
str(self.client_address))
1621
2310
logger.debug("Pipe FD: %d",
1622
2311
self.server.child_pipe.fileno())
1623
1624
session = (gnutls.connection
1625
.ClientSession(self.request,
1626
gnutls.connection
1627
.X509Credentials()))
1628
1629
# Note: gnutls.connection.X509Credentials is really a
1630
# generic GnuTLS certificate credentials object so long as
1631
# no X.509 keys are added to it. Therefore, we can use it
1632
# here despite using OpenPGP certificates.
1633
1634
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1635
# "+AES-256-CBC", "+SHA1",
1636
# "+COMP-NULL", "+CTYPE-OPENPGP",
1637
# "+DHE-DSS"))
2312
2313
session = gnutls.ClientSession(self.request)
2314
2315
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2316
# "+AES-256-CBC", "+SHA1",
2317
# "+COMP-NULL", "+CTYPE-OPENPGP",
2318
# "+DHE-DSS"))
1638
2319
# Use a fallback default, since this MUST be set.
1639
2320
priority = self.server.gnutls_priority
1640
2321
if priority is None:
1641
2322
priority = "NORMAL"
1642
(gnutls.library.functions
1643
.gnutls_priority_set_direct(session._c_object,
1644
priority, None))
1645
2323
gnutls.priority_set_direct(session,
2324
priority.encode("utf-8"), None)
2325
1646
2326
# Start communication using the Mandos protocol
1647
2327
# Get protocol number
1648
2328
line = self.request.makefile().readline()
1649
2329
logger.debug("Protocol version: %r", line)
1650
2330
try:
1651
2331
if int(line.strip().split()[0]) > 1:
1652
raise RuntimeError
2332
raise RuntimeError(line)
1653
2333
except (ValueError, IndexError, RuntimeError) as error:
1654
2334
logger.error("Unknown protocol version: %s", error)
1655
2335
return
1656
2336
1657
2337
# Start GnuTLS connection
1658
2338
try:
1659
2339
session.handshake()
1660
except gnutls.errors.GNUTLSError as error:
2340
except gnutls.Error as error:
1661
2341
logger.warning("Handshake failed: %s", error)
1662
2342
# Do not run session.bye() here: the session is not
1663
2343
# established. Just abandon the request.
1664
2344
return
1665
2345
logger.debug("Handshake succeeded")
1666
2346
1667
2347
approval_required = False
1668
2348
try:
1669
try:
1670
fpr = self.fingerprint(self.peer_certificate
1671
(session))
1672
except (TypeError,
1673
gnutls.errors.GNUTLSError) as error:
1674
logger.warning("Bad certificate: %s", error)
1675
return
1676
logger.debug("Fingerprint: %s", fpr)
1677
1678
try:
1679
client = ProxyClient(child_pipe, fpr,
2349
if gnutls.has_rawpk:
2350
fpr = b""
2351
try:
2352
key_id = self.key_id(
2353
self.peer_certificate(session))
2354
except (TypeError, gnutls.Error) as error:
2355
logger.warning("Bad certificate: %s", error)
2356
return
2357
logger.debug("Key ID: %s",
2358
key_id.decode("utf-8",
2359
errors="replace"))
2360
2361
else:
2362
key_id = b""
2363
try:
2364
fpr = self.fingerprint(
2365
self.peer_certificate(session))
2366
except (TypeError, gnutls.Error) as error:
2367
logger.warning("Bad certificate: %s", error)
2368
return
2369
logger.debug("Fingerprint: %s", fpr)
2370
2371
try:
2372
client = ProxyClient(child_pipe, key_id, fpr,
1680
2373
self.client_address)
1681
2374
except KeyError:
1682
2375
return
1683
2376
1684
2377
if client.approval_delay:
1685
2378
delay = client.approval_delay
1686
2379
client.approvals_pending += 1
1687
2380
approval_required = True
1688
2381
1689
2382
while True:
1690
2383
if not client.enabled:
1691
2384
logger.info("Client %s is disabled",
1692
client.name)
2385
client.name)
1693
2386
if self.server.use_dbus:
1694
2387
# Emit D-Bus signal
1695
2388
client.Rejected("Disabled")
1696
2389
return
1697
2390
1698
2391
if client.approved or not client.approval_delay:
1699
#We are approved or approval is disabled
2392
# We are approved or approval is disabled
1700
2393
break
1701
2394
elif client.approved is None:
1702
2395
logger.info("Client %s needs approval",
1704
2397
if self.server.use_dbus:
1705
2398
# Emit D-Bus signal
1706
2399
client.NeedApproval(
1707
client.approval_delay_milliseconds(),
1708
client.approved_by_default)
2400
client.approval_delay.total_seconds()
2401
* 1000, client.approved_by_default)
1709
2402
else:
1710
2403
logger.warning("Client %s was not approved",
1711
2404
client.name)
1713
2406
# Emit D-Bus signal
1714
2407
client.Rejected("Denied")
1715
2408
return
1716
1717
#wait until timeout or approved
2409
2410
# wait until timeout or approved
1718
2411
time = datetime.datetime.now()
1719
2412
client.changedstate.acquire()
1720
(client.changedstate.wait
1721
(float(client.timedelta_to_milliseconds(delay)
1722
/ 1000)))
2413
client.changedstate.wait(delay.total_seconds())
1723
2414
client.changedstate.release()
1724
2415
time2 = datetime.datetime.now()
1725
2416
if (time2 - time) >= delay:
1735
2426
break
1736
2427
else:
1737
2428
delay -= time2 - time
1738
1739
sent_size = 0
1740
while sent_size < len(client.secret):
1741
try:
1742
sent = session.send(client.secret[sent_size:])
1743
except gnutls.errors.GNUTLSError as error:
1744
logger.warning("gnutls send failed")
1745
return
1746
logger.debug("Sent: %d, remaining: %d",
1747
sent, len(client.secret)
1748
- (sent_size + sent))
1749
sent_size += sent
1750
2429
2430
try:
2431
session.send(client.secret)
2432
except gnutls.Error as error:
2433
logger.warning("gnutls send failed",
2434
exc_info=error)
2435
return
2436
1751
2437
logger.info("Sending secret to %s", client.name)
1752
2438
# bump the timeout using extended_timeout
1753
2439
client.bump_timeout(client.extended_timeout)
1754
2440
if self.server.use_dbus:
1755
2441
# Emit D-Bus signal
1756
2442
client.GotSecret()
1757
2443
1758
2444
finally:
1759
2445
if approval_required:
1760
2446
client.approvals_pending -= 1
1761
2447
try:
1762
2448
session.bye()
1763
except gnutls.errors.GNUTLSError as error:
1764
logger.warning("GnuTLS bye failed")
1765
2449
except gnutls.Error as error:
2450
logger.warning("GnuTLS bye failed",
2451
exc_info=error)
2452
1766
2453
@staticmethod
1767
2454
def peer_certificate(session):
1768
"Return the peer's OpenPGP certificate as a bytestring"
1769
# If not an OpenPGP certificate...
1770
if (gnutls.library.functions
1771
.gnutls_certificate_type_get(session._c_object)
1772
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1773
# ...do the normal thing
1774
return session.peer_certificate
2455
"Return the peer's certificate as a bytestring"
2456
try:
2457
cert_type = gnutls.certificate_type_get2(
2458
session, gnutls.CTYPE_PEERS)
2459
except AttributeError:
2460
cert_type = gnutls.certificate_type_get(session)
2461
if gnutls.has_rawpk:
2462
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2463
else:
2464
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2465
# If not a valid certificate type...
2466
if cert_type not in valid_cert_types:
2467
logger.info("Cert type %r not in %r", cert_type,
2468
valid_cert_types)
2469
# ...return invalid data
2470
return b""
1775
2471
list_size = ctypes.c_uint(1)
1776
cert_list = (gnutls.library.functions
1777
.gnutls_certificate_get_peers
1778
(session._c_object, ctypes.byref(list_size)))
2472
cert_list = (gnutls.certificate_get_peers
2473
(session, ctypes.byref(list_size)))
1779
2474
if not bool(cert_list) and list_size.value != 0:
1780
raise gnutls.errors.GNUTLSError("error getting peer"
1781
" certificate")
2475
raise gnutls.Error("error getting peer certificate")
1782
2476
if list_size.value == 0:
1783
2477
return None
1784
2478
cert = cert_list[0]
1785
2479
return ctypes.string_at(cert.data, cert.size)
1786
2480
2481
@staticmethod
2482
def key_id(certificate):
2483
"Convert a certificate bytestring to a hexdigit key ID"
2484
# New GnuTLS "datum" with the public key
2485
datum = gnutls.datum_t(
2486
ctypes.cast(ctypes.c_char_p(certificate),
2487
ctypes.POINTER(ctypes.c_ubyte)),
2488
ctypes.c_uint(len(certificate)))
2489
# XXX all these need to be created in the gnutls "module"
2490
# New empty GnuTLS certificate
2491
pubkey = gnutls.pubkey_t()
2492
gnutls.pubkey_init(ctypes.byref(pubkey))
2493
# Import the raw public key into the certificate
2494
gnutls.pubkey_import(pubkey,
2495
ctypes.byref(datum),
2496
gnutls.X509_FMT_DER)
2497
# New buffer for the key ID
2498
buf = ctypes.create_string_buffer(32)
2499
buf_len = ctypes.c_size_t(len(buf))
2500
# Get the key ID from the raw public key into the buffer
2501
gnutls.pubkey_get_key_id(
2502
pubkey,
2503
gnutls.KEYID_USE_SHA256,
2504
ctypes.cast(ctypes.byref(buf),
2505
ctypes.POINTER(ctypes.c_ubyte)),
2506
ctypes.byref(buf_len))
2507
# Deinit the certificate
2508
gnutls.pubkey_deinit(pubkey)
2509
2510
# Convert the buffer to a Python bytestring
2511
key_id = ctypes.string_at(buf, buf_len.value)
2512
# Convert the bytestring to hexadecimal notation
2513
hex_key_id = binascii.hexlify(key_id).upper()
2514
return hex_key_id
2515
1787
2516
@staticmethod
1788
2517
def fingerprint(openpgp):
1789
2518
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1790
2519
# New GnuTLS "datum" with the OpenPGP public key
1791
datum = (gnutls.library.types
1792
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1793
ctypes.POINTER
1794
(ctypes.c_ubyte)),
1795
ctypes.c_uint(len(openpgp))))
2520
datum = gnutls.datum_t(
2521
ctypes.cast(ctypes.c_char_p(openpgp),
2522
ctypes.POINTER(ctypes.c_ubyte)),
2523
ctypes.c_uint(len(openpgp)))
1796
2524
# New empty GnuTLS certificate
1797
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1798
(gnutls.library.functions
1799
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2525
crt = gnutls.openpgp_crt_t()
2526
gnutls.openpgp_crt_init(ctypes.byref(crt))
1800
2527
# Import the OpenPGP public key into the certificate
1801
(gnutls.library.functions
1802
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1803
gnutls.library.constants
1804
.GNUTLS_OPENPGP_FMT_RAW))
2528
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2529
gnutls.OPENPGP_FMT_RAW)
1805
2530
# Verify the self signature in the key
1806
2531
crtverify = ctypes.c_uint()
1807
(gnutls.library.functions
1808
.gnutls_openpgp_crt_verify_self(crt, 0,
1809
ctypes.byref(crtverify)))
2532
gnutls.openpgp_crt_verify_self(crt, 0,
2533
ctypes.byref(crtverify))
1810
2534
if crtverify.value != 0:
1811
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1812
raise (gnutls.errors.CertificateSecurityError
1813
("Verify failed"))
2535
gnutls.openpgp_crt_deinit(crt)
2536
raise gnutls.CertificateSecurityError(code
2537
=crtverify.value)
1814
2538
# New buffer for the fingerprint
1815
2539
buf = ctypes.create_string_buffer(20)
1816
2540
buf_len = ctypes.c_size_t()
1817
2541
# Get the fingerprint from the certificate into the buffer
1818
(gnutls.library.functions
1819
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1820
ctypes.byref(buf_len)))
2542
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2543
ctypes.byref(buf_len))
1821
2544
# Deinit the certificate
1822
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2545
gnutls.openpgp_crt_deinit(crt)
1823
2546
# Convert the buffer to a Python bytestring
1824
2547
fpr = ctypes.string_at(buf, buf_len.value)
1825
2548
# Convert the bytestring to hexadecimal notation
1827
2550
return hex_fpr
1828
2551
1829
2552
1830
class MultiprocessingMixIn(object):
2553
class MultiprocessingMixIn:
1831
2554
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2555
1832
2556
def sub_process_main(self, request, address):
1833
2557
try:
1834
2558
self.finish_request(request, address)
1835
2559
except Exception:
1836
2560
self.handle_error(request, address)
1837
2561
self.close_request(request)
1838
2562
1839
2563
def process_request(self, request, address):
1840
2564
"""Start a new process to process the request."""
1841
proc = multiprocessing.Process(target = self.sub_process_main,
1842
args = (request,
1843
address))
2565
proc = multiprocessing.Process(target=self.sub_process_main,
2566
args=(request, address))
1844
2567
proc.start()
1845
2568
return proc
1846
2569
1847
2570
1848
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2571
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1849
2572
""" adds a pipe to the MixIn """
2573
1850
2574
def process_request(self, request, client_address):
1851
2575
"""Overrides and wraps the original process_request().
1852
2576
1853
2577
This function creates a new pipe in self.pipe
1854
2578
"""
1855
2579
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1856
2580
1857
2581
proc = MultiprocessingMixIn.process_request(self, request,
1858
2582
client_address)
1859
2583
self.child_pipe.close()
1860
2584
self.add_pipe(parent_pipe, proc)
1861
2585
1862
2586
def add_pipe(self, parent_pipe, proc):
1863
2587
"""Dummy function; override as necessary"""
1864
raise NotImplementedError
2588
raise NotImplementedError()
1865
2589
1866
2590
1867
2591
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1868
socketserver.TCPServer, object):
2592
socketserver.TCPServer):
1869
2593
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1870
2594
1871
2595
Attributes:
1872
2596
enabled: Boolean; whether this server is activated yet
1873
2597
interface: None or a network interface name (string)
1874
2598
use_ipv6: Boolean; to use IPv6 or not
1875
2599
"""
2600
1876
2601
def __init__(self, server_address, RequestHandlerClass,
1877
interface=None, use_ipv6=True):
2602
interface=None,
2603
use_ipv6=True,
2604
socketfd=None):
2605
"""If socketfd is set, use that file descriptor instead of
2606
creating a new one with socket.socket().
2607
"""
1878
2608
self.interface = interface
1879
2609
if use_ipv6:
1880
2610
self.address_family = socket.AF_INET6
2611
if socketfd is not None:
2612
# Save the file descriptor
2613
self.socketfd = socketfd
2614
# Save the original socket.socket() function
2615
self.socket_socket = socket.socket
2616
2617
# To implement --socket, we monkey patch socket.socket.
2618
#
2619
# (When socketserver.TCPServer is a new-style class, we
2620
# could make self.socket into a property instead of monkey
2621
# patching socket.socket.)
2622
#
2623
# Create a one-time-only replacement for socket.socket()
2624
@functools.wraps(socket.socket)
2625
def socket_wrapper(*args, **kwargs):
2626
# Restore original function so subsequent calls are
2627
# not affected.
2628
socket.socket = self.socket_socket
2629
del self.socket_socket
2630
# This time only, return a new socket object from the
2631
# saved file descriptor.
2632
return socket.fromfd(self.socketfd, *args, **kwargs)
2633
# Replace socket.socket() function with wrapper
2634
socket.socket = socket_wrapper
2635
# The socketserver.TCPServer.__init__ will call
2636
# socket.socket(), which might be our replacement,
2637
# socket_wrapper(), if socketfd was set.
1881
2638
socketserver.TCPServer.__init__(self, server_address,
1882
2639
RequestHandlerClass)
2640
1883
2641
def server_bind(self):
1884
2642
"""This overrides the normal server_bind() function
1885
2643
to bind to an interface if one was specified, and also NOT to
1886
2644
bind to an address or port if they were not specified."""
2645
global SO_BINDTODEVICE
1887
2646
if self.interface is not None:
1888
2647
if SO_BINDTODEVICE is None:
1889
logger.error("SO_BINDTODEVICE does not exist;"
1890
" cannot bind to interface %s",
1891
self.interface)
1892
else:
1893
try:
1894
self.socket.setsockopt(socket.SOL_SOCKET,
1895
SO_BINDTODEVICE,
1896
str(self.interface
1897
+ '\0'))
1898
except socket.error as error:
1899
if error[0] == errno.EPERM:
1900
logger.error("No permission to"
1901
" bind to interface %s",
1902
self.interface)
1903
elif error[0] == errno.ENOPROTOOPT:
1904
logger.error("SO_BINDTODEVICE not available;"
1905
" cannot bind to interface %s",
1906
self.interface)
1907
else:
1908
raise
2648
# Fall back to a hard-coded value which seems to be
2649
# common enough.
2650
logger.warning("SO_BINDTODEVICE not found, trying 25")
2651
SO_BINDTODEVICE = 25
2652
try:
2653
self.socket.setsockopt(
2654
socket.SOL_SOCKET, SO_BINDTODEVICE,
2655
(self.interface + "\0").encode("utf-8"))
2656
except socket.error as error:
2657
if error.errno == errno.EPERM:
2658
logger.error("No permission to bind to"
2659
" interface %s", self.interface)
2660
elif error.errno == errno.ENOPROTOOPT:
2661
logger.error("SO_BINDTODEVICE not available;"
2662
" cannot bind to interface %s",
2663
self.interface)
2664
elif error.errno == errno.ENODEV:
2665
logger.error("Interface %s does not exist,"
2666
" cannot bind", self.interface)
2667
else:
2668
raise
1909
2669
# Only bind(2) the socket if we really need to.
1910
2670
if self.server_address[0] or self.server_address[1]:
2671
if self.server_address[1]:
2672
self.allow_reuse_address = True
1911
2673
if not self.server_address[0]:
1912
2674
if self.address_family == socket.AF_INET6:
1913
any_address = "::" # in6addr_any
2675
any_address = "::" # in6addr_any
1914
2676
else:
1915
any_address = socket.INADDR_ANY
2677
any_address = "0.0.0.0" # INADDR_ANY
1916
2678
self.server_address = (any_address,
1917
2679
self.server_address[1])
1918
2680
elif not self.server_address[1]:
1919
self.server_address = (self.server_address[0],
1920
0)
2681
self.server_address = (self.server_address[0], 0)
1921
2682
# if self.interface:
1922
2683
# self.server_address = (self.server_address[0],
1923
2684
# 0, # port
1929
2690
1930
2691
class MandosServer(IPv6_TCPServer):
1931
2692
"""Mandos server.
1932
2693
1933
2694
Attributes:
1934
2695
clients: set of Client objects
1935
2696
gnutls_priority GnuTLS priority string
1936
2697
use_dbus: Boolean; to emit D-Bus signals or not
1937
1938
Assumes a gobject.MainLoop event loop.
2698
2699
Assumes a GLib.MainLoop event loop.
1939
2700
"""
2701
1940
2702
def __init__(self, server_address, RequestHandlerClass,
1941
interface=None, use_ipv6=True, clients=None,
1942
gnutls_priority=None, use_dbus=True):
2703
interface=None,
2704
use_ipv6=True,
2705
clients=None,
2706
gnutls_priority=None,
2707
use_dbus=True,
2708
socketfd=None):
1943
2709
self.enabled = False
1944
2710
self.clients = clients
1945
2711
if self.clients is None:
1948
2714
self.gnutls_priority = gnutls_priority
1949
2715
IPv6_TCPServer.__init__(self, server_address,
1950
2716
RequestHandlerClass,
1951
interface = interface,
1952
use_ipv6 = use_ipv6)
2717
interface=interface,
2718
use_ipv6=use_ipv6,
2719
socketfd=socketfd)
2720
1953
2721
def server_activate(self):
1954
2722
if self.enabled:
1955
2723
return socketserver.TCPServer.server_activate(self)
1956
2724
1957
2725
def enable(self):
1958
2726
self.enabled = True
1959
2727
1960
2728
def add_pipe(self, parent_pipe, proc):
1961
2729
# Call "handle_ipc" for both data and EOF events
1962
gobject.io_add_watch(parent_pipe.fileno(),
1963
gobject.IO_IN | gobject.IO_HUP,
1964
functools.partial(self.handle_ipc,
1965
parent_pipe =
1966
parent_pipe,
1967
proc = proc))
1968
1969
def handle_ipc(self, source, condition, parent_pipe=None,
1970
proc = None, client_object=None):
1971
condition_names = {
1972
gobject.IO_IN: "IN", # There is data to read.
1973
gobject.IO_OUT: "OUT", # Data can be written (without
1974
# blocking).
1975
gobject.IO_PRI: "PRI", # There is urgent data to read.
1976
gobject.IO_ERR: "ERR", # Error condition.
1977
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1978
# broken, usually for pipes and
1979
# sockets).
1980
}
1981
conditions_string = ' | '.join(name
1982
for cond, name in
1983
condition_names.iteritems()
1984
if cond & condition)
2730
GLib.io_add_watch(
2731
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2732
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2733
functools.partial(self.handle_ipc,
2734
parent_pipe=parent_pipe,
2735
proc=proc))
2736
2737
def handle_ipc(self, source, condition,
2738
parent_pipe=None,
2739
proc=None,
2740
client_object=None):
1985
2741
# error, or the other end of multiprocessing.Pipe has closed
1986
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2742
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1987
2743
# Wait for other process to exit
1988
2744
proc.join()
1989
2745
return False
1990
2746
1991
2747
# Read a request from the child
1992
2748
request = parent_pipe.recv()
1993
2749
command = request[0]
1994
2750
1995
2751
if command == 'init':
1996
fpr = request[1]
1997
address = request[2]
1998
1999
for c in self.clients.itervalues():
2000
if c.fingerprint == fpr:
2752
key_id = request[1].decode("ascii")
2753
fpr = request[2].decode("ascii")
2754
address = request[3]
2755
2756
for c in self.clients.values():
2757
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2758
"27AE41E4649B934CA495991B7852B855"):
2759
continue
2760
if key_id and c.key_id == key_id:
2761
client = c
2762
break
2763
if fpr and c.fingerprint == fpr:
2001
2764
client = c
2002
2765
break
2003
2766
else:
2004
logger.info("Client not found for fingerprint: %s, ad"
2005
"dress: %s", fpr, address)
2767
logger.info("Client not found for key ID: %s, address"
2768
": %s", key_id or fpr, address)
2006
2769
if self.use_dbus:
2007
2770
# Emit D-Bus signal
2008
mandos_dbus_service.ClientNotFound(fpr,
2771
mandos_dbus_service.ClientNotFound(key_id or fpr,
2009
2772
address[0])
2010
2773
parent_pipe.send(False)
2011
2774
return False
2012
2013
gobject.io_add_watch(parent_pipe.fileno(),
2014
gobject.IO_IN | gobject.IO_HUP,
2015
functools.partial(self.handle_ipc,
2016
parent_pipe =
2017
parent_pipe,
2018
proc = proc,
2019
client_object =
2020
client))
2775
2776
GLib.io_add_watch(
2777
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2778
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2779
functools.partial(self.handle_ipc,
2780
parent_pipe=parent_pipe,
2781
proc=proc,
2782
client_object=client))
2021
2783
parent_pipe.send(True)
2022
2784
# remove the old hook in favor of the new above hook on
2023
2785
# same fileno
2026
2788
funcname = request[1]
2027
2789
args = request[2]
2028
2790
kwargs = request[3]
2029
2791
2030
2792
parent_pipe.send(('data', getattr(client_object,
2031
2793
funcname)(*args,
2032
**kwargs)))
2033
2794
**kwargs)))
2795
2034
2796
if command == 'getattr':
2035
2797
attrname = request[1]
2036
if callable(client_object.__getattribute__(attrname)):
2037
parent_pipe.send(('function',))
2798
if isinstance(client_object.__getattribute__(attrname),
2799
collections.abc.Callable):
2800
parent_pipe.send(('function', ))
2038
2801
else:
2039
parent_pipe.send(('data', client_object
2040
.__getattribute__(attrname)))
2041
2802
parent_pipe.send((
2803
'data', client_object.__getattribute__(attrname)))
2804
2042
2805
if command == 'setattr':
2043
2806
attrname = request[1]
2044
2807
value = request[2]
2045
2808
setattr(client_object, attrname, value)
2046
2809
2047
2810
return True
2048
2811
2049
2812
2813
def rfc3339_duration_to_delta(duration):
2814
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2815
2816
>>> timedelta = datetime.timedelta
2817
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2818
True
2819
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2820
True
2821
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2822
True
2823
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2824
True
2825
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2826
True
2827
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2828
True
2829
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2830
True
2831
>>> del timedelta
2832
"""
2833
2834
# Parsing an RFC 3339 duration with regular expressions is not
2835
# possible - there would have to be multiple places for the same
2836
# values, like seconds. The current code, while more esoteric, is
2837
# cleaner without depending on a parsing library. If Python had a
2838
# built-in library for parsing we would use it, but we'd like to
2839
# avoid excessive use of external libraries.
2840
2841
# New type for defining tokens, syntax, and semantics all-in-one
2842
Token = collections.namedtuple("Token", (
2843
"regexp", # To match token; if "value" is not None, must have
2844
# a "group" containing digits
2845
"value", # datetime.timedelta or None
2846
"followers")) # Tokens valid after this token
2847
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2848
# the "duration" ABNF definition in RFC 3339, Appendix A.
2849
token_end = Token(re.compile(r"$"), None, frozenset())
2850
token_second = Token(re.compile(r"(\d+)S"),
2851
datetime.timedelta(seconds=1),
2852
frozenset((token_end, )))
2853
token_minute = Token(re.compile(r"(\d+)M"),
2854
datetime.timedelta(minutes=1),
2855
frozenset((token_second, token_end)))
2856
token_hour = Token(re.compile(r"(\d+)H"),
2857
datetime.timedelta(hours=1),
2858
frozenset((token_minute, token_end)))
2859
token_time = Token(re.compile(r"T"),
2860
None,
2861
frozenset((token_hour, token_minute,
2862
token_second)))
2863
token_day = Token(re.compile(r"(\d+)D"),
2864
datetime.timedelta(days=1),
2865
frozenset((token_time, token_end)))
2866
token_month = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(weeks=4),
2868
frozenset((token_day, token_end)))
2869
token_year = Token(re.compile(r"(\d+)Y"),
2870
datetime.timedelta(weeks=52),
2871
frozenset((token_month, token_end)))
2872
token_week = Token(re.compile(r"(\d+)W"),
2873
datetime.timedelta(weeks=1),
2874
frozenset((token_end, )))
2875
token_duration = Token(re.compile(r"P"), None,
2876
frozenset((token_year, token_month,
2877
token_day, token_time,
2878
token_week)))
2879
# Define starting values:
2880
# Value so far
2881
value = datetime.timedelta()
2882
found_token = None
2883
# Following valid tokens
2884
followers = frozenset((token_duration, ))
2885
# String left to parse
2886
s = duration
2887
# Loop until end token is found
2888
while found_token is not token_end:
2889
# Search for any currently valid tokens
2890
for token in followers:
2891
match = token.regexp.match(s)
2892
if match is not None:
2893
# Token found
2894
if token.value is not None:
2895
# Value found, parse digits
2896
factor = int(match.group(1), 10)
2897
# Add to value so far
2898
value += factor * token.value
2899
# Strip token from string
2900
s = token.regexp.sub("", s, 1)
2901
# Go to found token
2902
found_token = token
2903
# Set valid next tokens
2904
followers = found_token.followers
2905
break
2906
else:
2907
# No currently valid tokens were found
2908
raise ValueError("Invalid RFC 3339 duration: {!r}"
2909
.format(duration))
2910
# End token found
2911
return value
2912
2913
2050
2914
def string_to_delta(interval):
2051
2915
"""Parse a string and return a datetime.timedelta
2052
2053
>>> string_to_delta('7d')
2054
datetime.timedelta(7)
2055
>>> string_to_delta('60s')
2056
datetime.timedelta(0, 60)
2057
>>> string_to_delta('60m')
2058
datetime.timedelta(0, 3600)
2059
>>> string_to_delta('24h')
2060
datetime.timedelta(1)
2061
>>> string_to_delta('1w')
2062
datetime.timedelta(7)
2063
>>> string_to_delta('5m 30s')
2064
datetime.timedelta(0, 330)
2916
2917
>>> string_to_delta('7d') == datetime.timedelta(7)
2918
True
2919
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2920
True
2921
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2922
True
2923
>>> string_to_delta('24h') == datetime.timedelta(1)
2924
True
2925
>>> string_to_delta('1w') == datetime.timedelta(7)
2926
True
2927
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2928
True
2065
2929
"""
2930
2931
try:
2932
return rfc3339_duration_to_delta(interval)
2933
except ValueError:
2934
pass
2935
2066
2936
timevalue = datetime.timedelta(0)
2067
2937
for s in interval.split():
2068
2938
try:
2069
suffix = unicode(s[-1])
2939
suffix = s[-1]
2070
2940
value = int(s[:-1])
2071
2941
if suffix == "d":
2072
2942
delta = datetime.timedelta(value)
2079
2949
elif suffix == "w":
2080
2950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2081
2951
else:
2082
raise ValueError("Unknown suffix {0!r}"
2083
.format(suffix))
2084
except (ValueError, IndexError) as e:
2952
raise ValueError("Unknown suffix {!r}".format(suffix))
2953
except IndexError as e:
2085
2954
raise ValueError(*(e.args))
2086
2955
timevalue += delta
2087
2956
return timevalue
2088
2957
2089
2958
2090
def daemon(nochdir = False, noclose = False):
2959
def daemon(nochdir=False, noclose=False):
2091
2960
"""See daemon(3). Standard BSD Unix function.
2092
2961
2093
2962
This should really exist as os.daemon, but it doesn't (yet)."""
2094
2963
if os.fork():
2095
2964
sys.exit()
2103
2972
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2104
2973
if not stat.S_ISCHR(os.fstat(null).st_mode):
2105
2974
raise OSError(errno.ENODEV,
2106
"{0} not a character device"
2975
"{} not a character device"
2107
2976
.format(os.devnull))
2108
2977
os.dup2(null, sys.stdin.fileno())
2109
2978
os.dup2(null, sys.stdout.fileno())
2113
2982
2114
2983
2115
2984
def main():
2116
2985
2117
2986
##################################################################
2118
2987
# Parsing of options, both command line and config file
2119
2988
2120
2989
parser = argparse.ArgumentParser()
2121
2990
parser.add_argument("-v", "--version", action="version",
2122
version = "%(prog)s {0}".format(version),
2991
version="%(prog)s {}".format(version),
2123
2992
help="show version number and exit")
2124
2993
parser.add_argument("-i", "--interface", metavar="IF",
2125
2994
help="Bind to interface IF")
2131
3000
help="Run self-test")
2132
3001
parser.add_argument("--debug", action="store_true",
2133
3002
help="Debug mode; run in foreground and log"
2134
" to terminal")
3003
" to terminal", default=None)
2135
3004
parser.add_argument("--debuglevel", metavar="LEVEL",
2136
3005
help="Debug level for stdout output")
2137
3006
parser.add_argument("--priority", help="GnuTLS"
2144
3013
" files")
2145
3014
parser.add_argument("--no-dbus", action="store_false",
2146
3015
dest="use_dbus", help="Do not provide D-Bus"
2147
" system bus interface")
3016
" system bus interface", default=None)
2148
3017
parser.add_argument("--no-ipv6", action="store_false",
2149
dest="use_ipv6", help="Do not use IPv6")
3018
dest="use_ipv6", help="Do not use IPv6",
3019
default=None)
2150
3020
parser.add_argument("--no-restore", action="store_false",
2151
3021
dest="restore", help="Do not restore stored"
2152
" state")
3022
" state", default=None)
3023
parser.add_argument("--socket", type=int,
3024
help="Specify a file descriptor to a network"
3025
" socket to use instead of creating one")
2153
3026
parser.add_argument("--statedir", metavar="DIR",
2154
3027
help="Directory to save/restore state in")
2155
3028
parser.add_argument("--foreground", action="store_true",
3029
help="Run in foreground", default=None)
3030
parser.add_argument("--no-zeroconf", action="store_false",
3031
dest="zeroconf", help="Do not use Zeroconf",
3032
default=None)
3033
2156
3034
options = parser.parse_args()
2157
2158
if options.check:
2159
import doctest
2160
doctest.testmod()
2161
sys.exit()
2162
3035
2163
3036
# Default values for config file for server-global settings
2164
server_defaults = { "interface": "",
2165
"address": "",
2166
"port": "",
2167
"debug": "False",
2168
"priority":
2169
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2170
"servicename": "Mandos",
2171
"use_dbus": "True",
2172
"use_ipv6": "True",
2173
"debuglevel": "",
2174
"restore": "True",
2175
"statedir": "/var/lib/mandos"
2176
}
2177
3037
if gnutls.has_rawpk:
3038
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3039
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3040
else:
3041
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3042
":+SIGN-DSA-SHA256")
3043
server_defaults = {"interface": "",
3044
"address": "",
3045
"port": "",
3046
"debug": "False",
3047
"priority": priority,
3048
"servicename": "Mandos",
3049
"use_dbus": "True",
3050
"use_ipv6": "True",
3051
"debuglevel": "",
3052
"restore": "True",
3053
"socket": "",
3054
"statedir": "/var/lib/mandos",
3055
"foreground": "False",
3056
"zeroconf": "True",
3057
}
3058
del priority
3059
2178
3060
# Parse config file for server-global settings
2179
server_config = configparser.SafeConfigParser(server_defaults)
3061
server_config = configparser.ConfigParser(server_defaults)
2180
3062
del server_defaults
2181
server_config.read(os.path.join(options.configdir,
2182
"mandos.conf"))
2183
# Convert the SafeConfigParser object to a dict
3063
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3064
# Convert the ConfigParser object to a dict
2184
3065
server_settings = server_config.defaults()
2185
3066
# Use the appropriate methods on the non-string config options
2186
for option in ("debug", "use_dbus", "use_ipv6"):
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
2187
3069
server_settings[option] = server_config.getboolean("DEFAULT",
2188
3070
option)
2189
3071
if server_settings["port"]:
2190
3072
server_settings["port"] = server_config.getint("DEFAULT",
2191
3073
"port")
3074
if server_settings["socket"]:
3075
server_settings["socket"] = server_config.getint("DEFAULT",
3076
"socket")
3077
# Later, stdin will, and stdout and stderr might, be dup'ed
3078
# over with an opened os.devnull. But we don't want this to
3079
# happen with a supplied network socket.
3080
if 0 <= server_settings["socket"] <= 2:
3081
server_settings["socket"] = os.dup(server_settings
3082
["socket"])
2192
3083
del server_config
2193
3084
2194
3085
# Override the settings from the config file with command line
2195
3086
# options, if set.
2196
3087
for option in ("interface", "address", "port", "debug",
2197
"priority", "servicename", "configdir",
2198
"use_dbus", "use_ipv6", "debuglevel", "restore",
2199
"statedir"):
3088
"priority", "servicename", "configdir", "use_dbus",
3089
"use_ipv6", "debuglevel", "restore", "statedir",
3090
"socket", "foreground", "zeroconf"):
2200
3091
value = getattr(options, option)
2201
3092
if value is not None:
2202
3093
server_settings[option] = value
2203
3094
del options
2204
3095
# Force all strings to be unicode
2205
3096
for option in server_settings.keys():
2206
if type(server_settings[option]) is str:
2207
server_settings[option] = unicode(server_settings[option])
3097
if isinstance(server_settings[option], bytes):
3098
server_settings[option] = (server_settings[option]
3099
.decode("utf-8"))
3100
# Force all boolean options to be boolean
3101
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3102
"foreground", "zeroconf"):
3103
server_settings[option] = bool(server_settings[option])
3104
# Debug implies foreground
3105
if server_settings["debug"]:
3106
server_settings["foreground"] = True
2208
3107
# Now we have our good server settings in "server_settings"
2209
3108
2210
3109
##################################################################
2211
3110
3111
if (not server_settings["zeroconf"]
3112
and not (server_settings["port"]
3113
or server_settings["socket"] != "")):
3114
parser.error("Needs port or socket to work without Zeroconf")
3115
2212
3116
# For convenience
2213
3117
debug = server_settings["debug"]
2214
3118
debuglevel = server_settings["debuglevel"]
2216
3120
use_ipv6 = server_settings["use_ipv6"]
2217
3121
stored_state_path = os.path.join(server_settings["statedir"],
2218
3122
stored_state_file)
2219
3123
foreground = server_settings["foreground"]
3124
zeroconf = server_settings["zeroconf"]
3125
2220
3126
if debug:
2221
3127
initlogger(debug, logging.DEBUG)
2222
3128
else:
2225
3131
else:
2226
3132
level = getattr(logging, debuglevel.upper())
2227
3133
initlogger(debug, level)
2228
3134
2229
3135
if server_settings["servicename"] != "Mandos":
2230
syslogger.setFormatter(logging.Formatter
2231
('Mandos ({0}) [%(process)d]:'
2232
' %(levelname)s: %(message)s'
2233
.format(server_settings
2234
["servicename"])))
2235
3136
syslogger.setFormatter(
3137
logging.Formatter('Mandos ({}) [%(process)d]:'
3138
' %(levelname)s: %(message)s'.format(
3139
server_settings["servicename"])))
3140
2236
3141
# Parse config file with clients
2237
client_config = configparser.SafeConfigParser(Client
2238
.client_defaults)
3142
client_config = configparser.ConfigParser(Client.client_defaults)
2239
3143
client_config.read(os.path.join(server_settings["configdir"],
2240
3144
"clients.conf"))
2241
3145
2242
3146
global mandos_dbus_service
2243
3147
mandos_dbus_service = None
2244
2245
tcp_server = MandosServer((server_settings["address"],
2246
server_settings["port"]),
2247
ClientHandler,
2248
interface=(server_settings["interface"]
2249
or None),
2250
use_ipv6=use_ipv6,
2251
gnutls_priority=
2252
server_settings["priority"],
2253
use_dbus=use_dbus)
2254
if not debug:
2255
pidfilename = "/var/run/mandos.pid"
3148
3149
socketfd = None
3150
if server_settings["socket"] != "":
3151
socketfd = server_settings["socket"]
3152
tcp_server = MandosServer(
3153
(server_settings["address"], server_settings["port"]),
3154
ClientHandler,
3155
interface=(server_settings["interface"] or None),
3156
use_ipv6=use_ipv6,
3157
gnutls_priority=server_settings["priority"],
3158
use_dbus=use_dbus,
3159
socketfd=socketfd)
3160
if not foreground:
3161
pidfilename = "/run/mandos.pid"
3162
if not os.path.isdir("/run/."):
3163
pidfilename = "/var/run/mandos.pid"
3164
pidfile = None
2256
3165
try:
2257
pidfile = open(pidfilename, "w")
2258
except IOError:
2259
logger.error("Could not open file %r", pidfilename)
2260
2261
for name in ("_mandos", "mandos", "nobody"):
3166
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3167
except IOError as e:
3168
logger.error("Could not open file %r", pidfilename,
3169
exc_info=e)
3170
3171
for name, group in (("_mandos", "_mandos"),
3172
("mandos", "mandos"),
3173
("nobody", "nogroup")):
2262
3174
try:
2263
3175
uid = pwd.getpwnam(name).pw_uid
2264
gid = pwd.getpwnam(name).pw_gid
3176
gid = pwd.getpwnam(group).pw_gid
2265
3177
break
2266
3178
except KeyError:
2267
3179
continue
2271
3183
try:
2272
3184
os.setgid(gid)
2273
3185
os.setuid(uid)
3186
if debug:
3187
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3188
gid))
2274
3189
except OSError as error:
2275
if error[0] != errno.EPERM:
2276
raise error
2277
3190
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3191
.format(uid, gid, os.strerror(error.errno)))
3192
if error.errno != errno.EPERM:
3193
raise
3194
2278
3195
if debug:
2279
3196
# Enable all possible GnuTLS debugging
2280
3197
2281
3198
# "Use a log level over 10 to enable all debugging options."
2282
3199
# - GnuTLS manual
2283
gnutls.library.functions.gnutls_global_set_log_level(11)
2284
2285
@gnutls.library.types.gnutls_log_func
3200
gnutls.global_set_log_level(11)
3201
3202
@gnutls.log_func
2286
3203
def debug_gnutls(level, string):
2287
logger.debug("GnuTLS: %s", string[:-1])
2288
2289
(gnutls.library.functions
2290
.gnutls_global_set_log_function(debug_gnutls))
2291
3204
logger.debug("GnuTLS: %s",
3205
string[:-1].decode("utf-8",
3206
errors="replace"))
3207
3208
gnutls.global_set_log_function(debug_gnutls)
3209
2292
3210
# Redirect stdin so all checkers get /dev/null
2293
3211
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2294
3212
os.dup2(null, sys.stdin.fileno())
2295
3213
if null > 2:
2296
3214
os.close(null)
2297
3215
2298
3216
# Need to fork before connecting to D-Bus
2299
if not debug:
3217
if not foreground:
2300
3218
# Close all input and output, do double fork, etc.
2301
3219
daemon()
2302
2303
gobject.threads_init()
2304
3220
3221
if gi.version_info < (3, 10, 2):
3222
# multiprocessing will use threads, so before we use GLib we
3223
# need to inform GLib that threads will be used.
3224
GLib.threads_init()
3225
2305
3226
global main_loop
2306
3227
# From the Avahi example code
2307
3228
DBusGMainLoop(set_as_default=True)
2308
main_loop = gobject.MainLoop()
3229
main_loop = GLib.MainLoop()
2309
3230
bus = dbus.SystemBus()
2310
3231
# End of Avahi example code
2311
3232
if use_dbus:
2312
3233
try:
2313
3234
bus_name = dbus.service.BusName("se.recompile.Mandos",
2314
bus, do_not_queue=True)
2315
old_bus_name = (dbus.service.BusName
2316
("se.bsnet.fukt.Mandos", bus,
2317
do_not_queue=True))
2318
except dbus.exceptions.NameExistsException as e:
2319
logger.error(unicode(e) + ", disabling D-Bus")
3235
bus,
3236
do_not_queue=True)
3237
old_bus_name = dbus.service.BusName(
3238
"se.bsnet.fukt.Mandos", bus,
3239
do_not_queue=True)
3240
except dbus.exceptions.DBusException as e:
3241
logger.error("Disabling D-Bus:", exc_info=e)
2320
3242
use_dbus = False
2321
3243
server_settings["use_dbus"] = False
2322
3244
tcp_server.use_dbus = False
2323
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2324
service = AvahiServiceToSyslog(name =
2325
server_settings["servicename"],
2326
servicetype = "_mandos._tcp",
2327
protocol = protocol, bus = bus)
2328
if server_settings["interface"]:
2329
service.interface = (if_nametoindex
2330
(str(server_settings["interface"])))
2331
3245
if zeroconf:
3246
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3247
service = AvahiServiceToSyslog(
3248
name=server_settings["servicename"],
3249
servicetype="_mandos._tcp",
3250
protocol=protocol,
3251
bus=bus)
3252
if server_settings["interface"]:
3253
service.interface = if_nametoindex(
3254
server_settings["interface"].encode("utf-8"))
3255
2332
3256
global multiprocessing_manager
2333
3257
multiprocessing_manager = multiprocessing.Manager()
2334
3258
2335
3259
client_class = Client
2336
3260
if use_dbus:
2337
client_class = functools.partial(ClientDBusTransitional,
2338
bus = bus)
2339
3261
client_class = functools.partial(ClientDBus, bus=bus)
3262
2340
3263
client_settings = Client.config_parser(client_config)
2341
3264
old_client_settings = {}
2342
3265
clients_data = {}
2343
3266
3267
# This is used to redirect stdout and stderr for checker processes
3268
global wnull
3269
wnull = open(os.devnull, "w") # A writable /dev/null
3270
# Only used if server is running in foreground but not in debug
3271
# mode
3272
if debug or not foreground:
3273
wnull.close()
3274
2344
3275
# Get client data and settings from last running state.
2345
3276
if server_settings["restore"]:
2346
3277
try:
2347
3278
with open(stored_state_path, "rb") as stored_state:
2348
clients_data, old_client_settings = (pickle.load
2349
(stored_state))
3279
if sys.version_info.major == 2:
3280
clients_data, old_client_settings = pickle.load(
3281
stored_state)
3282
else:
3283
bytes_clients_data, bytes_old_client_settings = (
3284
pickle.load(stored_state, encoding="bytes"))
3285
# Fix bytes to strings
3286
# clients_data
3287
# .keys()
3288
clients_data = {(key.decode("utf-8")
3289
if isinstance(key, bytes)
3290
else key): value
3291
for key, value in
3292
bytes_clients_data.items()}
3293
del bytes_clients_data
3294
for key in clients_data:
3295
value = {(k.decode("utf-8")
3296
if isinstance(k, bytes) else k): v
3297
for k, v in
3298
clients_data[key].items()}
3299
clients_data[key] = value
3300
# .client_structure
3301
value["client_structure"] = [
3302
(s.decode("utf-8")
3303
if isinstance(s, bytes)
3304
else s) for s in
3305
value["client_structure"]]
3306
# .name, .host, and .checker_command
3307
for k in ("name", "host", "checker_command"):
3308
if isinstance(value[k], bytes):
3309
value[k] = value[k].decode("utf-8")
3310
if "key_id" not in value:
3311
value["key_id"] = ""
3312
elif "fingerprint" not in value:
3313
value["fingerprint"] = ""
3314
# old_client_settings
3315
# .keys()
3316
old_client_settings = {
3317
(key.decode("utf-8")
3318
if isinstance(key, bytes)
3319
else key): value
3320
for key, value in
3321
bytes_old_client_settings.items()}
3322
del bytes_old_client_settings
3323
# .host and .checker_command
3324
for value in old_client_settings.values():
3325
for attribute in ("host", "checker_command"):
3326
if isinstance(value[attribute], bytes):
3327
value[attribute] = (value[attribute]
3328
.decode("utf-8"))
2350
3329
os.remove(stored_state_path)
2351
3330
except IOError as e:
2352
logger.warning("Could not load persistent state: {0}"
2353
.format(e))
2354
if e.errno != errno.ENOENT:
3331
if e.errno == errno.ENOENT:
3332
logger.warning("Could not load persistent state:"
3333
" {}".format(os.strerror(e.errno)))
3334
else:
3335
logger.critical("Could not load persistent state:",
3336
exc_info=e)
2355
3337
raise
2356
3338
except EOFError as e:
2357
3339
logger.warning("Could not load persistent state: "
2358
"EOFError: {0}".format(e))
2359
3340
"EOFError:",
3341
exc_info=e)
3342
2360
3343
with PGPEngine() as pgp:
2361
for client_name, client in clients_data.iteritems():
3344
for client_name, client in clients_data.items():
3345
# Skip removed clients
3346
if client_name not in client_settings:
3347
continue
3348
2362
3349
# Decide which value to use after restoring saved state.
2363
3350
# We have three different values: Old config file,
2364
3351
# new config file, and saved state.
2369
3356
# For each value in new config, check if it
2370
3357
# differs from the old config value (Except for
2371
3358
# the "secret" attribute)
2372
if (name != "secret" and
2373
value != old_client_settings[client_name]
2374
[name]):
3359
if (name != "secret"
3360
and (value !=
3361
old_client_settings[client_name][name])):
2375
3362
client[name] = value
2376
3363
except KeyError:
2377
3364
pass
2378
3365
2379
3366
# Clients who has passed its expire date can still be
2380
# enabled if its last checker was successful. Clients
3367
# enabled if its last checker was successful. A Client
2381
3368
# whose checker succeeded before we stored its state is
2382
3369
# assumed to have successfully run all checkers during
2383
3370
# downtime.
2385
3372
if datetime.datetime.utcnow() >= client["expires"]:
2386
3373
if not client["last_checked_ok"]:
2387
3374
logger.warning(
2388
"disabling client {0} - Client never "
2389
"performed a successful checker"
2390
.format(client_name))
3375
"disabling client {} - Client never "
3376
"performed a successful checker".format(
3377
client_name))
2391
3378
client["enabled"] = False
2392
3379
elif client["last_checker_status"] != 0:
2393
3380
logger.warning(
2394
"disabling client {0} - Client "
2395
"last checker failed with error code {1}"
2396
.format(client_name,
2397
client["last_checker_status"]))
3381
"disabling client {} - Client last"
3382
" checker failed with error code"
3383
" {}".format(
3384
client_name,
3385
client["last_checker_status"]))
2398
3386
client["enabled"] = False
2399
3387
else:
2400
client["expires"] = (datetime.datetime
2401
.utcnow()
2402
+ client["timeout"])
3388
client["expires"] = (
3389
datetime.datetime.utcnow()
3390
+ client["timeout"])
2403
3391
logger.debug("Last checker succeeded,"
2404
" keeping {0} enabled"
2405
.format(client_name))
3392
" keeping {} enabled".format(
3393
client_name))
2406
3394
try:
2407
client["secret"] = (
2408
pgp.decrypt(client["encrypted_secret"],
2409
client_settings[client_name]
2410
["secret"]))
3395
client["secret"] = pgp.decrypt(
3396
client["encrypted_secret"],
3397
client_settings[client_name]["secret"])
2411
3398
except PGPError:
2412
3399
# If decryption fails, we use secret from new settings
2413
logger.debug("Failed to decrypt {0} old secret"
2414
.format(client_name))
2415
client["secret"] = (
2416
client_settings[client_name]["secret"])
3400
logger.debug("Failed to decrypt {} old secret".format(
3401
client_name))
3402
client["secret"] = (client_settings[client_name]
3403
["secret"])
2417
3404
2418
2419
3405
# Add/remove clients based on new changes made to config
2420
3406
for client_name in (set(old_client_settings)
2421
3407
- set(client_settings)):
2425
3411
clients_data[client_name] = client_settings[client_name]
2426
3412
2427
3413
# Create all client objects
2428
for client_name, client in clients_data.iteritems():
3414
for client_name, client in clients_data.items():
2429
3415
tcp_server.clients[client_name] = client_class(
2430
name = client_name, settings = client)
2431
3416
name=client_name,
3417
settings=client,
3418
server_settings=server_settings)
3419
2432
3420
if not tcp_server.clients:
2433
3421
logger.warning("No clients defined")
2434
2435
if not debug:
2436
try:
2437
with pidfile:
2438
pid = os.getpid()
2439
pidfile.write(str(pid) + "\n".encode("utf-8"))
2440
del pidfile
2441
except IOError:
2442
logger.error("Could not write to file %r with PID %d",
2443
pidfilename, pid)
2444
except NameError:
2445
# "pidfile" was never created
2446
pass
3422
3423
if not foreground:
3424
if pidfile is not None:
3425
pid = os.getpid()
3426
try:
3427
with pidfile:
3428
print(pid, file=pidfile)
3429
except IOError:
3430
logger.error("Could not write to file %r with PID %d",
3431
pidfilename, pid)
3432
del pidfile
2447
3433
del pidfilename
2448
signal.signal(signal.SIGINT, signal.SIG_IGN)
2449
2450
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2451
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2452
3434
3435
for termsig in (signal.SIGHUP, signal.SIGTERM):
3436
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3437
lambda: main_loop.quit() and False)
3438
2453
3439
if use_dbus:
2454
class MandosDBusService(DBusObjectWithProperties):
3440
3441
@alternate_dbus_interfaces(
3442
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3443
class MandosDBusService(DBusObjectWithObjectManager):
2455
3444
"""A D-Bus proxy object"""
3445
2456
3446
def __init__(self):
2457
3447
dbus.service.Object.__init__(self, bus, "/")
3448
2458
3449
_interface = "se.recompile.Mandos"
2459
2460
@dbus_interface_annotations(_interface)
2461
def _foo(self):
2462
return { "org.freedesktop.DBus.Property"
2463
".EmitsChangedSignal":
2464
"false"}
2465
3450
2466
3451
@dbus.service.signal(_interface, signature="o")
2467
3452
def ClientAdded(self, objpath):
2468
3453
"D-Bus signal"
2469
3454
pass
2470
3455
2471
3456
@dbus.service.signal(_interface, signature="ss")
2472
def ClientNotFound(self, fingerprint, address):
3457
def ClientNotFound(self, key_id, address):
2473
3458
"D-Bus signal"
2474
3459
pass
2475
3460
3461
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3462
"true"})
2476
3463
@dbus.service.signal(_interface, signature="os")
2477
3464
def ClientRemoved(self, objpath, name):
2478
3465
"D-Bus signal"
2479
3466
pass
2480
3467
3468
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3469
"true"})
2481
3470
@dbus.service.method(_interface, out_signature="ao")
2482
3471
def GetAllClients(self):
2483
3472
"D-Bus method"
2484
return dbus.Array(c.dbus_object_path
2485
for c in
2486
tcp_server.clients.itervalues())
2487
3473
return dbus.Array(c.dbus_object_path for c in
3474
tcp_server.clients.values())
3475
3476
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3477
"true"})
2488
3478
@dbus.service.method(_interface,
2489
3479
out_signature="a{oa{sv}}")
2490
3480
def GetAllClientsWithProperties(self):
2491
3481
"D-Bus method"
2492
3482
return dbus.Dictionary(
2493
((c.dbus_object_path, c.GetAll(""))
2494
for c in tcp_server.clients.itervalues()),
3483
{c.dbus_object_path: c.GetAll(
3484
"se.recompile.Mandos.Client")
3485
for c in tcp_server.clients.values()},
2495
3486
signature="oa{sv}")
2496
3487
2497
3488
@dbus.service.method(_interface, in_signature="o")
2498
3489
def RemoveClient(self, object_path):
2499
3490
"D-Bus method"
2500
for c in tcp_server.clients.itervalues():
3491
for c in tcp_server.clients.values():
2501
3492
if c.dbus_object_path == object_path:
2502
3493
del tcp_server.clients[c.name]
2503
3494
c.remove_from_connection()
2504
# Don't signal anything except ClientRemoved
3495
# Don't signal the disabling
2505
3496
c.disable(quiet=True)
2506
# Emit D-Bus signal
2507
self.ClientRemoved(object_path, c.name)
3497
# Emit D-Bus signal for removal
3498
self.client_removed_signal(c)
2508
3499
return
2509
3500
raise KeyError(object_path)
2510
3501
2511
3502
del _interface
2512
2513
class MandosDBusServiceTransitional(MandosDBusService):
2514
__metaclass__ = AlternateDBusNamesMetaclass
2515
mandos_dbus_service = MandosDBusServiceTransitional()
2516
3503
3504
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3505
out_signature="a{oa{sa{sv}}}")
3506
def GetManagedObjects(self):
3507
"""D-Bus method"""
3508
return dbus.Dictionary(
3509
{client.dbus_object_path:
3510
dbus.Dictionary(
3511
{interface: client.GetAll(interface)
3512
for interface in
3513
client._get_all_interface_names()})
3514
for client in tcp_server.clients.values()})
3515
3516
def client_added_signal(self, client):
3517
"""Send the new standard signal and the old signal"""
3518
if use_dbus:
3519
# New standard signal
3520
self.InterfacesAdded(
3521
client.dbus_object_path,
3522
dbus.Dictionary(
3523
{interface: client.GetAll(interface)
3524
for interface in
3525
client._get_all_interface_names()}))
3526
# Old signal
3527
self.ClientAdded(client.dbus_object_path)
3528
3529
def client_removed_signal(self, client):
3530
"""Send the new standard signal and the old signal"""
3531
if use_dbus:
3532
# New standard signal
3533
self.InterfacesRemoved(
3534
client.dbus_object_path,
3535
client._get_all_interface_names())
3536
# Old signal
3537
self.ClientRemoved(client.dbus_object_path,
3538
client.name)
3539
3540
mandos_dbus_service = MandosDBusService()
3541
3542
# Save modules to variables to exempt the modules from being
3543
# unloaded before the function registered with atexit() is run.
3544
mp = multiprocessing
3545
wn = wnull
3546
2517
3547
def cleanup():
2518
3548
"Cleanup function; run on exit"
2519
service.cleanup()
2520
2521
multiprocessing.active_children()
3549
if zeroconf:
3550
service.cleanup()
3551
3552
mp.active_children()
3553
wn.close()
2522
3554
if not (tcp_server.clients or client_settings):
2523
3555
return
2524
3556
2525
3557
# Store client before exiting. Secrets are encrypted with key
2526
3558
# based on what config file has. If config file is
2527
3559
# removed/edited, old secret will thus be unrecovable.
2528
3560
clients = {}
2529
3561
with PGPEngine() as pgp:
2530
for client in tcp_server.clients.itervalues():
3562
for client in tcp_server.clients.values():
2531
3563
key = client_settings[client.name]["secret"]
2532
3564
client.encrypted_secret = pgp.encrypt(client.secret,
2533
3565
key)
2534
3566
client_dict = {}
2535
3567
2536
3568
# A list of attributes that can not be pickled
2537
3569
# + secret.
2538
exclude = set(("bus", "changedstate", "secret",
2539
"checker"))
2540
for name, typ in (inspect.getmembers
2541
(dbus.service.Object)):
3570
exclude = {"bus", "changedstate", "secret",
3571
"checker", "server_settings"}
3572
for name, typ in inspect.getmembers(dbus.service
3573
.Object):
2542
3574
exclude.add(name)
2543
3575
2544
3576
client_dict["encrypted_secret"] = (client
2545
3577
.encrypted_secret)
2546
3578
for attr in client.client_structure:
2547
3579
if attr not in exclude:
2548
3580
client_dict[attr] = getattr(client, attr)
2549
3581
2550
3582
clients[client.name] = client_dict
2551
3583
del client_settings[client.name]["secret"]
2552
3584
2553
3585
try:
2554
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2555
prefix="clients-",
2556
dir=os.path.dirname
2557
(stored_state_path))
2558
with os.fdopen(tempfd, "wb") as stored_state:
2559
pickle.dump((clients, client_settings), stored_state)
3586
with tempfile.NamedTemporaryFile(
3587
mode='wb',
3588
suffix=".pickle",
3589
prefix='clients-',
3590
dir=os.path.dirname(stored_state_path),
3591
delete=False) as stored_state:
3592
pickle.dump((clients, client_settings), stored_state,
3593
protocol=2)
3594
tempname = stored_state.name
2560
3595
os.rename(tempname, stored_state_path)
2561
3596
except (IOError, OSError) as e:
2562
logger.warning("Could not save persistent state: {0}"
2563
.format(e))
2564
3597
if not debug:
2565
3598
try:
2566
3599
os.remove(tempname)
2567
3600
except NameError:
2568
3601
pass
2569
if e.errno not in set((errno.ENOENT, errno.EACCES,
2570
errno.EEXIST)):
2571
raise e
2572
3602
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3603
logger.warning("Could not save persistent state: {}"
3604
.format(os.strerror(e.errno)))
3605
else:
3606
logger.warning("Could not save persistent state:",
3607
exc_info=e)
3608
raise
3609
2573
3610
# Delete all clients, and settings from config
2574
3611
while tcp_server.clients:
2575
3612
name, client = tcp_server.clients.popitem()
2576
3613
if use_dbus:
2577
3614
client.remove_from_connection()
2578
# Don't signal anything except ClientRemoved
3615
# Don't signal the disabling
2579
3616
client.disable(quiet=True)
3617
# Emit D-Bus signal for removal
2580
3618
if use_dbus:
2581
# Emit D-Bus signal
2582
mandos_dbus_service.ClientRemoved(client
2583
.dbus_object_path,
2584
client.name)
3619
mandos_dbus_service.client_removed_signal(client)
2585
3620
client_settings.clear()
2586
3621
2587
3622
atexit.register(cleanup)
2588
2589
for client in tcp_server.clients.itervalues():
3623
3624
for client in tcp_server.clients.values():
2590
3625
if use_dbus:
2591
# Emit D-Bus signal
2592
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3626
# Emit D-Bus signal for adding
3627
mandos_dbus_service.client_added_signal(client)
2593
3628
# Need to initiate checking of clients
2594
3629
if client.enabled:
2595
3630
client.init_checker()
2596
3631
2597
3632
tcp_server.enable()
2598
3633
tcp_server.server_activate()
2599
3634
2600
3635
# Find out what port we got
2601
service.port = tcp_server.socket.getsockname()[1]
3636
if zeroconf:
3637
service.port = tcp_server.socket.getsockname()[1]
2602
3638
if use_ipv6:
2603
3639
logger.info("Now listening on address %r, port %d,"
2604
3640
" flowinfo %d, scope_id %d",
2606
3642
else: # IPv4
2607
3643
logger.info("Now listening on address %r, port %d",
2608
3644
*tcp_server.socket.getsockname())
2609
2610
#service.interface = tcp_server.socket.getsockname()[3]
2611
3645
3646
# service.interface = tcp_server.socket.getsockname()[3]
3647
2612
3648
try:
2613
# From the Avahi example code
2614
try:
2615
service.activate()
2616
except dbus.exceptions.DBusException as error:
2617
logger.critical("D-Bus Exception", exc_info=error)
2618
cleanup()
2619
sys.exit(1)
2620
# End of Avahi example code
2621
2622
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2623
lambda *args, **kwargs:
2624
(tcp_server.handle_request
2625
(*args[2:], **kwargs) or True))
2626
3649
if zeroconf:
3650
# From the Avahi example code
3651
try:
3652
service.activate()
3653
except dbus.exceptions.DBusException as error:
3654
logger.critical("D-Bus Exception", exc_info=error)
3655
cleanup()
3656
sys.exit(1)
3657
# End of Avahi example code
3658
3659
GLib.io_add_watch(
3660
GLib.IOChannel.unix_new(tcp_server.fileno()),
3661
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3662
lambda *args, **kwargs: (tcp_server.handle_request
3663
(*args[2:], **kwargs) or True))
3664
2627
3665
logger.debug("Starting main loop")
2628
3666
main_loop.run()
2629
3667
except AvahiError as error:
2638
3676
# Must run before the D-Bus bus name gets deregistered
2639
3677
cleanup()
2640
3678
3679
3680
def should_only_run_tests():
3681
parser = argparse.ArgumentParser(add_help=False)
3682
parser.add_argument("--check", action='store_true')
3683
args, unknown_args = parser.parse_known_args()
3684
run_tests = args.check
3685
if run_tests:
3686
# Remove --check argument from sys.argv
3687
sys.argv[1:] = unknown_args
3688
return run_tests
3689
3690
# Add all tests from doctest strings
3691
def load_tests(loader, tests, none):
3692
import doctest
3693
tests.addTests(doctest.DocTestSuite())
3694
return tests
3695
2641
3696
if __name__ == '__main__':
2642
main()
3697
try:
3698
if should_only_run_tests():
3699
# Call using ./mandos --check [--verbose]
3700
unittest.main()
3701
else:
3702
main()
3703
finally:
3704
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0