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- Committer: Teddy Hogeborn
- Date: 2024-11-17 16:53:00 UTC
- Revision ID: teddy@recompile.se-20241117165300-02hxm96s8cj9528e
mandos: Avoid closing configured server network socket
If we are passed a pre-created created network socket as a file
descriptor, we must avoid later closing it (when stdin, stdout and
stderr are dup2()ed over with /dev/null) by making sure that the
network file descriptor is not 0, 1, or 2, by creating a new file
descriptor if necessary.
However, when we create a new file descriptor we must check that the
new file descriptor is not 0, 1, or 2 either, and try again until we
get a suitable file descriptor.
If we are passed a pre-created created network socket as a file
descriptor, we must avoid later closing it (when stdin, stdout and
stderr are dup2()ed over with /dev/null) by making sure that the
network file descriptor is not 0, 1, or 2, by creating a new file
descriptor if necessary.
However, when we create a new file descriptor we must check that the
new file descriptor is not 0, 1, or 2 either, and try again until we
get a suitable file descriptor.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- 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
# -*- coding: utf-8; lexical-binding: t -*-
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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 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
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
44
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
38
51
import socket
39
import argparse
40
52
import datetime
41
53
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
49
import sys
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
50
58
import re
51
import os
52
59
import signal
53
60
import subprocess
54
61
import atexit
55
62
import stat
56
import logging
57
63
import logging.handlers
58
64
import pwd
59
65
import contextlib
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
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import random
81
import shlex
65
82
66
83
import dbus
67
84
import dbus.service
68
import gobject
69
import avahi
85
import gi
86
from gi.repository import GLib
70
87
from dbus.mainloop.glib import DBusGMainLoop
71
88
import ctypes
72
89
import ctypes.util
73
90
import xml.dom.minidom
74
91
import inspect
75
92
76
try:
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
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:
77
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
123
except AttributeError:
79
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
80
127
from IN import SO_BINDTODEVICE
81
128
except ImportError:
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.1"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
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 = "1.8.17"
147
stored_state_file = "clients.pickle"
148
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
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
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
" [%(process)d]:"
200
" %(levelname)s:"
201
" %(message)s"))
202
log.addHandler(console)
203
log.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
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
269
def encrypt(self, data, password):
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)
285
return ciphertext
286
287
def decrypt(self, data, password):
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)
303
return decrypted_plaintext
304
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
102
331
103
332
class AvahiError(Exception):
104
333
def __init__(self, value, *args, **kwargs):
105
334
self.value = value
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
109
338
110
339
class AvahiServiceError(AvahiError):
111
340
pass
112
341
342
113
343
class AvahiGroupError(AvahiError):
114
344
pass
115
345
116
346
117
class AvahiService(object):
347
class AvahiService:
118
348
"""An Avahi (Zeroconf) service.
119
349
120
350
Attributes:
121
351
interface: integer; avahi.IF_UNSPEC or an interface index.
122
352
Used to optionally bind to the specified interface.
123
name: string; Example: 'Mandos'
124
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
126
356
port: integer; what port to announce
127
357
TXT: list of strings; TXT record for the service
128
358
domain: string; Domain to publish on, default to .local if empty.
134
364
server: D-Bus Server
135
365
bus: dbus.SystemBus()
136
366
"""
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
141
379
self.interface = interface
142
380
self.name = name
143
381
self.type = servicetype
152
390
self.server = None
153
391
self.bus = bus
154
392
self.entry_group_state_changed_match = None
155
def rename(self):
393
394
def rename(self, remove=True):
156
395
"""Derived from the Avahi example code"""
157
396
if self.rename_count >= self.max_renames:
158
logger.critical("No suitable Zeroconf service name found"
159
" after %i retries, exiting.",
160
self.rename_count)
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
161
400
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
163
logger.info("Changing Zeroconf service name to %r ...",
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
170
try:
171
self.add()
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
176
403
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
177
420
def remove(self):
178
421
"""Derived from the Avahi example code"""
179
422
if self.entry_group_state_changed_match is not None:
181
424
self.entry_group_state_changed_match = None
182
425
if self.group is not None:
183
426
self.group.Reset()
427
184
428
def add(self):
185
429
"""Derived from the Avahi example code"""
186
430
self.remove()
191
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
436
self.entry_group_state_changed_match = (
193
437
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
self.name, self.type)
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
197
441
self.group.AddService(
198
442
self.interface,
199
443
self.protocol,
203
447
dbus.UInt16(self.port),
204
448
avahi.string_array_to_txt_array(self.TXT))
205
449
self.group.Commit()
450
206
451
def entry_group_state_changed(self, state, error):
207
452
"""Derived from the Avahi example code"""
208
logger.debug("Avahi entry group state change: %i", state)
209
453
log.debug("Avahi entry group state change: %i", state)
454
210
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
211
logger.debug("Zeroconf service established.")
456
log.debug("Zeroconf service established.")
212
457
elif state == avahi.ENTRY_GROUP_COLLISION:
213
logger.info("Zeroconf service name collision.")
458
log.info("Zeroconf service name collision.")
214
459
self.rename()
215
460
elif state == avahi.ENTRY_GROUP_FAILURE:
216
logger.critical("Avahi: Error in group state changed %s",
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
220
465
def cleanup(self):
221
466
"""Derived from the Avahi example code"""
222
467
if self.group is not None:
223
468
try:
224
469
self.group.Free()
225
470
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
471
dbus.exceptions.DBusException):
227
472
pass
228
473
self.group = None
229
474
self.remove()
475
230
476
def server_state_changed(self, state, error=None):
231
477
"""Derived from the Avahi example code"""
232
logger.debug("Avahi server state change: %i", state)
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
235
avahi.SERVER_REGISTERING: None,
236
avahi.SERVER_COLLISION:
237
"Zeroconf server name collision",
238
avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
478
log.debug("Avahi server state change: %i", state)
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
}
240
485
if state in bad_states:
241
486
if bad_states[state] is not None:
242
487
if error is None:
243
logger.error(bad_states[state])
488
log.error(bad_states[state])
244
489
else:
245
logger.error(bad_states[state] + ": %r", error)
490
log.error(bad_states[state] + ": %r", error)
246
491
self.cleanup()
247
492
elif state == avahi.SERVER_RUNNING:
248
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
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
249
504
else:
250
505
if error is None:
251
logger.debug("Unknown state: %r", state)
506
log.debug("Unknown state: %r", state)
252
507
else:
253
logger.debug("Unknown state: %r: %r", state, error)
508
log.debug("Unknown state: %r: %r", state, error)
509
254
510
def activate(self):
255
511
"""Derived from the Avahi example code"""
256
512
if self.server is None:
260
516
follow_name_owner_changes=True),
261
517
avahi.DBUS_INTERFACE_SERVER)
262
518
self.server.connect_to_signal("StateChanged",
263
self.server_state_changed)
519
self.server_state_changed)
264
520
self.server_state_changed(self.server.GetState())
265
521
266
522
267
class Client(object):
523
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
525
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
531
return ret
532
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class _session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(_session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
578
579
class _openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
268
875
"""A representation of a client host served by this server.
269
876
270
877
Attributes:
271
_approved: bool(); 'None' if not yet approved/disapproved
878
approved: bool(); None if not yet approved/disapproved
272
879
approval_delay: datetime.timedelta(); Time to wait for approval
273
880
approval_duration: datetime.timedelta(); Duration of one approval
274
checker: subprocess.Popen(); a running checker process used
275
to see if the client lives.
276
'None' if no process is running.
277
checker_callback_tag: a gobject event source tag, or None
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
278
885
checker_command: string; External command which is run to check
279
886
if client lives. %() expansions are done at
280
887
runtime with vars(self) as dict, so that for
281
888
instance %(name)s can be used in the command.
282
checker_initiator_tag: a gobject event source tag, or None
889
checker_initiator_tag: a GLib event source tag, or None
283
890
created: datetime.datetime(); (UTC) object creation
891
client_structure: Object describing what attributes a client has
892
and is used for storing the client at exit
284
893
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
894
disable_initiator_tag: a GLib event source tag, or None
287
895
enabled: bool()
288
896
fingerprint: string (40 or 32 hexadecimal digits); used to
289
uniquely identify the client
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
290
900
host: string; available for use by the checker command
291
901
interval: datetime.timedelta(); How often to start a new checker
292
902
last_approval_request: datetime.datetime(); (UTC) or None
293
903
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
904
last_checker_status: integer between 0 and 255 reflecting exit
905
status of last checker. -1 reflects crashed
906
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
last_enabled: datetime.datetime(); (UTC) or None
295
910
name: string; from the config file, used in log messages and
296
911
D-Bus identifiers
297
912
secret: bytestring; sent verbatim (over TLS) to client
298
913
timeout: datetime.timedelta(); How long from last_checked_ok
299
914
until this client is disabled
300
extended_timeout: extra long timeout when password has been sent
915
extended_timeout: extra long timeout when secret has been sent
301
916
runtime_expansions: Allowed attributes for runtime expansion.
302
917
expires: datetime.datetime(); time (UTC) when a client will be
303
918
disabled, or None
919
server_settings: The server_settings dict from main()
304
920
"""
305
921
306
922
runtime_expansions = ("approval_delay", "approval_duration",
307
"created", "enabled", "fingerprint",
308
"host", "interval", "last_checked_ok",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
309
926
"last_enabled", "name", "timeout")
310
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
311
939
@staticmethod
312
def _timedelta_to_milliseconds(td):
313
"Convert a datetime.timedelta() to milliseconds"
314
return ((td.days * 24 * 60 * 60 * 1000)
315
+ (td.seconds * 1000)
316
+ (td.microseconds // 1000))
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return self._timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return self._timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return self._timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return self._timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
940
def config_parser(config):
941
"""Construct a new dict of client settings of this form:
942
{ client_name: {setting_name: value, ...}, ...}
943
with exceptions for any special settings as defined above.
944
NOTE: Must be a pure function. Must return the same result
945
value given the same arguments.
946
"""
947
settings = {}
948
for client_name in config.sections():
949
section = dict(config.items(client_name))
950
client = settings[client_name] = {}
951
952
client["host"] = section["host"]
953
# Reformat values from string types to Python types
954
client["approved_by_default"] = config.getboolean(
955
client_name, "approved_by_default")
956
client["enabled"] = config.getboolean(client_name,
957
"enabled")
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
964
client["fingerprint"] = (section.get("fingerprint",
965
"").upper()
966
.replace(" ", ""))
967
if not (client["key_id"] or client["fingerprint"]):
968
log.error("Skipping client %s without key_id or"
969
" fingerprint", client_name)
970
del settings[client_name]
971
continue
972
if "secret" in section:
973
client["secret"] = codecs.decode(section["secret"]
974
.encode("utf-8"),
975
"base64")
976
elif "secfile" in section:
977
with open(os.path.expanduser(os.path.expandvars
978
(section["secfile"])),
979
"rb") as secfile:
980
client["secret"] = secfile.read()
981
else:
982
raise TypeError("No secret or secfile for section {}"
983
.format(section))
984
client["timeout"] = string_to_delta(section["timeout"])
985
client["extended_timeout"] = string_to_delta(
986
section["extended_timeout"])
987
client["interval"] = string_to_delta(section["interval"])
988
client["approval_delay"] = string_to_delta(
989
section["approval_delay"])
990
client["approval_duration"] = string_to_delta(
991
section["approval_duration"])
992
client["checker_command"] = section["checker"]
993
client["last_approval_request"] = None
994
client["last_checked_ok"] = None
995
client["last_checker_status"] = -2
996
997
return settings
998
999
def __init__(self, settings, name=None, server_settings=None):
337
1000
self.name = name
338
if config is None:
339
config = {}
340
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
346
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
1001
if server_settings is None:
1002
server_settings = {}
1003
self.server_settings = server_settings
1004
# adding all client settings
1005
for setting, value in settings.items():
1006
setattr(self, setting, value)
1007
1008
if self.enabled:
1009
if not hasattr(self, "last_enabled"):
1010
self.last_enabled = datetime.datetime.utcnow()
1011
if not hasattr(self, "expires"):
1012
self.expires = (datetime.datetime.utcnow()
1013
+ self.timeout)
354
1014
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
1015
self.last_enabled = None
1016
self.expires = None
1017
1018
log.debug("Creating client %r", self.name)
1019
log.debug(" Key ID: %s", self.key_id)
1020
log.debug(" Fingerprint: %s", self.fingerprint)
1021
self.created = settings.get("created",
1022
datetime.datetime.utcnow())
1023
1024
# attributes specific for this server instance
367
1025
self.checker = None
368
1026
self.checker_initiator_tag = None
369
1027
self.disable_initiator_tag = None
370
self.expires = None
371
1028
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
1029
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
1030
self.approved = None
378
1031
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
1032
self.changedstate = multiprocessing_manager.Condition(
1033
multiprocessing_manager.Lock())
1034
self.client_structure = [attr
1035
for attr in self.__dict__.keys()
1036
if not attr.startswith("_")]
1037
self.client_structure.append("client_structure")
1038
1039
for name, t in inspect.getmembers(
1040
type(self), lambda obj: isinstance(obj, property)):
1041
if not name.startswith("_"):
1042
self.client_structure.append(name)
1043
1044
# Send notice to process children that client state has changed
385
1045
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
1046
with self.changedstate:
1047
self.changedstate.notify_all()
1048
390
1049
def enable(self):
391
1050
"""Start this client's checker and timeout hooks"""
392
1051
if getattr(self, "enabled", False):
393
1052
# Already enabled
394
1053
return
395
self.send_changedstate()
1054
self.enabled = True
396
1055
self.last_enabled = datetime.datetime.utcnow()
397
# Schedule a new checker to be started an 'interval' from now,
398
# and every interval from then on.
399
self.checker_initiator_tag = (gobject.timeout_add
400
(self.interval_milliseconds(),
401
self.start_checker))
402
# Schedule a disable() when 'timeout' has passed
403
self.expires = datetime.datetime.utcnow() + self.timeout
404
self.disable_initiator_tag = (gobject.timeout_add
405
(self.timeout_milliseconds(),
406
self.disable))
407
self.enabled = True
408
# Also start a new checker *right now*.
409
self.start_checker()
410
1056
self.init_checker()
1057
self.send_changedstate()
1058
411
1059
def disable(self, quiet=True):
412
1060
"""Disable this client."""
413
1061
if not getattr(self, "enabled", False):
414
1062
return False
415
1063
if not quiet:
1064
log.info("Disabling client %s", self.name)
1065
if getattr(self, "disable_initiator_tag", None) is not None:
1066
GLib.source_remove(self.disable_initiator_tag)
1067
self.disable_initiator_tag = None
1068
self.expires = None
1069
if getattr(self, "checker_initiator_tag", None) is not None:
1070
GLib.source_remove(self.checker_initiator_tag)
1071
self.checker_initiator_tag = None
1072
self.stop_checker()
1073
self.enabled = False
1074
if not quiet:
416
1075
self.send_changedstate()
417
if not quiet:
418
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = None
422
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
425
self.checker_initiator_tag = None
426
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
1076
# Do not run this again if called by a GLib.timeout_add
431
1077
return False
432
1078
433
1079
def __del__(self):
434
self.disable_hook = None
435
1080
self.disable()
436
437
def checker_callback(self, pid, condition, command):
1081
1082
def init_checker(self, randomize_start=False):
1083
# Schedule a new checker to be started a randomly selected
1084
# time (a fraction of 'interval') from now. This spreads out
1085
# the startup of checkers over time when the server is
1086
# started.
1087
if self.checker_initiator_tag is not None:
1088
GLib.source_remove(self.checker_initiator_tag)
1089
interval_milliseconds = int(self.interval.total_seconds()
1090
* 1000)
1091
if randomize_start:
1092
delay_milliseconds = random.randrange(
1093
interval_milliseconds + 1)
1094
else:
1095
delay_milliseconds = interval_milliseconds
1096
self.checker_initiator_tag = GLib.timeout_add(
1097
delay_milliseconds, self.start_checker, randomize_start)
1098
delay = datetime.timedelta(0, 0, 0, delay_milliseconds)
1099
# A checker might take up to an 'interval' of time, so we can
1100
# expire at the soonest one interval after a checker was
1101
# started. Since the initial checker is delayed, the expire
1102
# time might have to be extended.
1103
now = datetime.datetime.utcnow()
1104
self.expires = now + delay + self.interval
1105
# Schedule a disable() at expire time
1106
if self.disable_initiator_tag is not None:
1107
GLib.source_remove(self.disable_initiator_tag)
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int((self.expires - now).total_seconds() * 1000),
1110
self.disable)
1111
1112
def checker_callback(self, source, condition, connection,
1113
command):
438
1114
"""The checker has completed, so take appropriate actions."""
1115
# Read return code from connection (see call_pipe)
1116
returncode = connection.recv()
1117
connection.close()
1118
if self.checker is not None:
1119
self.checker.join()
439
1120
self.checker_callback_tag = None
440
1121
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
444
logger.info("Checker for %(name)s succeeded",
445
vars(self))
1122
1123
if returncode >= 0:
1124
self.last_checker_status = returncode
1125
self.last_checker_signal = None
1126
if self.last_checker_status == 0:
1127
log.info("Checker for %(name)s succeeded", vars(self))
446
1128
self.checked_ok()
447
1129
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
1130
log.info("Checker for %(name)s failed", vars(self))
450
1131
else:
451
logger.warning("Checker for %(name)s crashed?",
452
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1132
self.last_checker_status = -1
1133
self.last_checker_signal = -returncode
1134
log.warning("Checker for %(name)s crashed?", vars(self))
1135
return False
1136
1137
def checked_ok(self):
1138
"""Assert that the client has been seen, alive and well."""
1139
self.last_checked_ok = datetime.datetime.utcnow()
1140
self.last_checker_status = 0
1141
self.last_checker_signal = None
1142
self.bump_timeout()
1143
1144
def bump_timeout(self, timeout=None):
1145
"""Bump up the timeout for this client."""
460
1146
if timeout is None:
461
1147
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(self._timedelta_to_milliseconds(timeout),
467
self.disable))
468
1148
if self.disable_initiator_tag is not None:
1149
GLib.source_remove(self.disable_initiator_tag)
1150
self.disable_initiator_tag = None
1151
if getattr(self, "enabled", False):
1152
self.disable_initiator_tag = GLib.timeout_add(
1153
int(timeout.total_seconds() * 1000), self.disable)
1154
self.expires = datetime.datetime.utcnow() + timeout
1155
469
1156
def need_approval(self):
470
1157
self.last_approval_request = datetime.datetime.utcnow()
471
472
def start_checker(self):
1158
1159
def start_checker(self, start_was_randomized=False):
473
1160
"""Start a new checker subprocess if one is not running.
474
1161
475
1162
If a checker already exists, leave it running and do
476
1163
nothing."""
477
1164
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1165
# did that, and if a checker (for some reason) started running
1166
# slowly and taking more than 'interval' time, then the client
1167
# would inevitably timeout, since no checker would get a
1168
# chance to run to completion. If we instead leave running
482
1169
# checkers alone, the checker would have to take more time
483
1170
# than 'timeout' for the client to be disabled, which is as it
484
1171
# should be.
485
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1172
1173
if self.checker is not None and not self.checker.is_alive():
1174
log.warning("Checker was not alive; joining")
1175
self.checker.join()
1176
self.checker = None
499
1177
# Start a new checker if needed
500
1178
if self.checker is None:
1179
# Escape attributes for the shell
1180
escaped_attrs = {
1181
attr: shlex.quote(str(getattr(self, attr)))
1182
for attr in self.runtime_expansions}
501
1183
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1184
command = self.checker_command % escaped_attrs
1185
except TypeError as error:
1186
log.error('Could not format string "%s"',
1187
self.checker_command, exc_info=error)
1188
return True # Try again later
520
1189
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1190
log.info("Starting checker %r for %s", command, self.name)
1191
# We don't need to redirect stdout and stderr, since
1192
# in normal mode, that is already done by daemon(),
1193
# and in debug mode we don't want to. (Stdin is
1194
# always replaced by /dev/null.)
1195
# The exception is when not debugging but nevertheless
1196
# running in the foreground; use the previously
1197
# created wnull.
1198
popen_args = {"close_fds": True,
1199
"shell": True,
1200
"cwd": "/"}
1201
if (not self.server_settings["debug"]
1202
and self.server_settings["foreground"]):
1203
popen_args.update({"stdout": wnull,
1204
"stderr": wnull})
1205
pipe = multiprocessing.Pipe(duplex=False)
1206
self.checker = multiprocessing.Process(
1207
target=call_pipe,
1208
args=(pipe[1], subprocess.call, command),
1209
kwargs=popen_args)
1210
self.checker.start()
1211
self.checker_callback_tag = GLib.io_add_watch(
1212
GLib.IOChannel.unix_new(pipe[0].fileno()),
1213
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1214
self.checker_callback, pipe[0], command)
1215
if start_was_randomized:
1216
# We were started after a random delay; Schedule a new
1217
# checker to be started an 'interval' from now, and every
1218
# interval from then on.
1219
now = datetime.datetime.utcnow()
1220
self.checker_initiator_tag = GLib.timeout_add(
1221
int(self.interval.total_seconds() * 1000),
1222
self.start_checker)
1223
self.expires = max(self.expires, now + self.interval)
1224
# Don't start a new checker again after same random delay
1225
return False
1226
# Re-run this periodically if run by GLib.timeout_add
545
1227
return True
546
1228
547
1229
def stop_checker(self):
548
1230
"""Force the checker process, if any, to stop."""
549
1231
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1232
GLib.source_remove(self.checker_callback_tag)
551
1233
self.checker_callback_tag = None
552
1234
if getattr(self, "checker", None) is None:
553
1235
return
554
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1236
log.debug("Stopping checker for %(name)s", vars(self))
1237
self.checker.terminate()
563
1238
self.checker = None
564
1239
565
def dbus_service_property(dbus_interface, signature="v",
566
access="readwrite", byte_arrays=False):
1240
1241
def dbus_service_property(dbus_interface,
1242
signature="v",
1243
access="readwrite",
1244
byte_arrays=False):
567
1245
"""Decorators for marking methods of a DBusObjectWithProperties to
568
1246
become properties on the D-Bus.
569
1247
570
1248
The decorated method will be called with no arguments by "Get"
571
1249
and with one argument by "Set".
572
1250
573
1251
The parameters, where they are supported, are the same as
574
1252
dbus.service.method, except there is only "signature", since the
575
1253
type from Get() and the type sent to Set() is the same.
578
1256
# "Set" method, so we fail early here:
579
1257
if byte_arrays and signature != "ay":
580
1258
raise ValueError("Byte arrays not supported for non-'ay'"
581
" signature %r" % signature)
1259
" signature {!r}".format(signature))
1260
582
1261
def decorator(func):
583
1262
func._dbus_is_property = True
584
1263
func._dbus_interface = dbus_interface
587
1266
func._dbus_name = func.__name__
588
1267
if func._dbus_name.endswith("_dbus_property"):
589
1268
func._dbus_name = func._dbus_name[:-14]
590
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
591
return func
1269
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1270
return func
1271
1272
return decorator
1273
1274
1275
def dbus_interface_annotations(dbus_interface):
1276
"""Decorator for marking functions returning interface annotations
1277
1278
Usage:
1279
1280
@dbus_interface_annotations("org.example.Interface")
1281
def _foo(self): # Function name does not matter
1282
return {"org.freedesktop.DBus.Deprecated": "true",
1283
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1284
"false"}
1285
"""
1286
1287
def decorator(func):
1288
func._dbus_is_interface = True
1289
func._dbus_interface = dbus_interface
1290
func._dbus_name = dbus_interface
1291
return func
1292
1293
return decorator
1294
1295
1296
def dbus_annotations(annotations):
1297
"""Decorator to annotate D-Bus methods, signals or properties
1298
Usage:
1299
1300
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1301
"org.freedesktop.DBus.Property."
1302
"EmitsChangedSignal": "false"})
1303
@dbus_service_property("org.example.Interface", signature="b",
1304
access="r")
1305
def Property_dbus_property(self):
1306
return dbus.Boolean(False)
1307
1308
See also the DBusObjectWithAnnotations class.
1309
"""
1310
1311
def decorator(func):
1312
func._dbus_annotations = annotations
1313
return func
1314
592
1315
return decorator
593
1316
594
1317
595
1318
class DBusPropertyException(dbus.exceptions.DBusException):
596
1319
"""A base class for D-Bus property-related exceptions
597
1320
"""
598
def __unicode__(self):
599
return unicode(str(self))
1321
pass
600
1322
601
1323
602
1324
class DBusPropertyAccessException(DBusPropertyException):
611
1333
pass
612
1334
613
1335
614
class DBusObjectWithProperties(dbus.service.Object):
1336
class DBusObjectWithAnnotations(dbus.service.Object):
1337
"""A D-Bus object with annotations.
1338
1339
Classes inheriting from this can use the dbus_annotations
1340
decorator to add annotations to methods or signals.
1341
"""
1342
1343
@staticmethod
1344
def _is_dbus_thing(thing):
1345
"""Returns a function testing if an attribute is a D-Bus thing
1346
1347
If called like _is_dbus_thing("method") it returns a function
1348
suitable for use as predicate to inspect.getmembers().
1349
"""
1350
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1351
False)
1352
1353
def _get_all_dbus_things(self, thing):
1354
"""Returns a generator of (name, attribute) pairs
1355
"""
1356
return ((getattr(athing.__get__(self), "_dbus_name", name),
1357
athing.__get__(self))
1358
for cls in self.__class__.__mro__
1359
for name, athing in
1360
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1361
1362
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
out_signature="s",
1364
path_keyword="object_path",
1365
connection_keyword="connection")
1366
def Introspect(self, object_path, connection):
1367
"""Overloading of standard D-Bus method.
1368
1369
Inserts annotation tags on methods and signals.
1370
"""
1371
xmlstring = dbus.service.Object.Introspect(self, object_path,
1372
connection)
1373
try:
1374
document = xml.dom.minidom.parseString(xmlstring)
1375
1376
for if_tag in document.getElementsByTagName("interface"):
1377
# Add annotation tags
1378
for typ in ("method", "signal"):
1379
for tag in if_tag.getElementsByTagName(typ):
1380
annots = dict()
1381
for name, prop in (self.
1382
_get_all_dbus_things(typ)):
1383
if (name == tag.getAttribute("name")
1384
and prop._dbus_interface
1385
== if_tag.getAttribute("name")):
1386
annots.update(getattr(
1387
prop, "_dbus_annotations", {}))
1388
for name, value in annots.items():
1389
ann_tag = document.createElement(
1390
"annotation")
1391
ann_tag.setAttribute("name", name)
1392
ann_tag.setAttribute("value", value)
1393
tag.appendChild(ann_tag)
1394
# Add interface annotation tags
1395
for annotation, value in dict(
1396
itertools.chain.from_iterable(
1397
annotations().items()
1398
for name, annotations
1399
in self._get_all_dbus_things("interface")
1400
if name == if_tag.getAttribute("name")
1401
)).items():
1402
ann_tag = document.createElement("annotation")
1403
ann_tag.setAttribute("name", annotation)
1404
ann_tag.setAttribute("value", value)
1405
if_tag.appendChild(ann_tag)
1406
# Fix argument name for the Introspect method itself
1407
if (if_tag.getAttribute("name")
1408
== dbus.INTROSPECTABLE_IFACE):
1409
for cn in if_tag.getElementsByTagName("method"):
1410
if cn.getAttribute("name") == "Introspect":
1411
for arg in cn.getElementsByTagName("arg"):
1412
if (arg.getAttribute("direction")
1413
== "out"):
1414
arg.setAttribute("name",
1415
"xml_data")
1416
xmlstring = document.toxml("utf-8")
1417
document.unlink()
1418
except (AttributeError, xml.dom.DOMException,
1419
xml.parsers.expat.ExpatError) as error:
1420
log.error("Failed to override Introspection method",
1421
exc_info=error)
1422
return xmlstring
1423
1424
1425
class DBusObjectWithProperties(DBusObjectWithAnnotations):
615
1426
"""A D-Bus object with properties.
616
1427
617
1428
Classes inheriting from this can use the dbus_service_property
618
1429
decorator to expose methods as D-Bus properties. It exposes the
619
1430
standard Get(), Set(), and GetAll() methods on the D-Bus.
620
1431
"""
621
622
@staticmethod
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
625
626
def _get_all_dbus_properties(self):
627
"""Returns a generator of (name, attribute) pairs
628
"""
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
632
1432
633
1433
def _get_dbus_property(self, interface_name, property_name):
634
1434
"""Returns a bound method if one exists which is a D-Bus
635
1435
property with the specified name and interface.
636
1436
"""
637
for name in (property_name,
638
property_name + "_dbus_property"):
639
prop = getattr(self, name, None)
640
if (prop is None
641
or not self._is_dbus_property(prop)
642
or prop._dbus_name != property_name
643
or (interface_name and prop._dbus_interface
644
and interface_name != prop._dbus_interface)):
645
continue
646
return prop
1437
for cls in self.__class__.__mro__:
1438
for name, value in inspect.getmembers(
1439
cls, self._is_dbus_thing("property")):
1440
if (value._dbus_name == property_name
1441
and value._dbus_interface == interface_name):
1442
return value.__get__(self)
1443
647
1444
# No such property
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
649
+ interface_name + "."
650
+ property_name)
651
652
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1445
raise DBusPropertyNotFound("{}:{}.{}".format(
1446
self.dbus_object_path, interface_name, property_name))
1447
1448
@classmethod
1449
def _get_all_interface_names(cls):
1450
"""Get a sequence of all interfaces supported by an object"""
1451
return (name for name in set(getattr(getattr(x, attr),
1452
"_dbus_interface", None)
1453
for x in (inspect.getmro(cls))
1454
for attr in dir(x))
1455
if name is not None)
1456
1457
@dbus.service.method(dbus.PROPERTIES_IFACE,
1458
in_signature="ss",
653
1459
out_signature="v")
654
1460
def Get(self, interface_name, property_name):
655
1461
"""Standard D-Bus property Get() method, see D-Bus standard.
661
1467
if not hasattr(value, "variant_level"):
662
1468
return value
663
1469
return type(value)(value, variant_level=value.variant_level+1)
664
1470
665
1471
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
666
1472
def Set(self, interface_name, property_name, value):
667
1473
"""Standard D-Bus property Set() method, see D-Bus standard.
673
1479
# The byte_arrays option is not supported yet on
674
1480
# signatures other than "ay".
675
1481
if prop._dbus_signature != "ay":
676
raise ValueError
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
1482
raise ValueError("Byte arrays not supported for non-"
1483
"'ay' signature {!r}"
1484
.format(prop._dbus_signature))
1485
value = dbus.ByteArray(bytes(value))
679
1486
prop(value)
680
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1487
1488
@dbus.service.method(dbus.PROPERTIES_IFACE,
1489
in_signature="s",
682
1490
out_signature="a{sv}")
683
1491
def GetAll(self, interface_name):
684
1492
"""Standard D-Bus property GetAll() method, see D-Bus
686
1494
687
1495
Note: Will not include properties with access="write".
688
1496
"""
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
1497
properties = {}
1498
for name, prop in self._get_all_dbus_things("property"):
691
1499
if (interface_name
692
1500
and interface_name != prop._dbus_interface):
693
1501
# Interface non-empty but did not match
697
1505
continue
698
1506
value = prop()
699
1507
if not hasattr(value, "variant_level"):
700
all[name] = value
1508
properties[name] = value
701
1509
continue
702
all[name] = type(value)(value, variant_level=
703
value.variant_level+1)
704
return dbus.Dictionary(all, signature="sv")
705
1510
properties[name] = type(value)(
1511
value, variant_level=value.variant_level + 1)
1512
return dbus.Dictionary(properties, signature="sv")
1513
1514
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1515
def PropertiesChanged(self, interface_name, changed_properties,
1516
invalidated_properties):
1517
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1518
standard.
1519
"""
1520
pass
1521
706
1522
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
707
1523
out_signature="s",
708
path_keyword='object_path',
709
connection_keyword='connection')
1524
path_keyword="object_path",
1525
connection_keyword="connection")
710
1526
def Introspect(self, object_path, connection):
711
"""Standard D-Bus method, overloaded to insert property tags.
1527
"""Overloading of standard D-Bus method.
1528
1529
Inserts property tags and interface annotation tags.
712
1530
"""
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
714
connection)
1531
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1532
object_path,
1533
connection)
715
1534
try:
716
1535
document = xml.dom.minidom.parseString(xmlstring)
1536
717
1537
def make_tag(document, name, prop):
718
1538
e = document.createElement("property")
719
1539
e.setAttribute("name", name)
720
1540
e.setAttribute("type", prop._dbus_signature)
721
1541
e.setAttribute("access", prop._dbus_access)
722
1542
return e
1543
723
1544
for if_tag in document.getElementsByTagName("interface"):
1545
# Add property tags
724
1546
for tag in (make_tag(document, name, prop)
725
1547
for name, prop
726
in self._get_all_dbus_properties()
1548
in self._get_all_dbus_things("property")
727
1549
if prop._dbus_interface
728
1550
== if_tag.getAttribute("name")):
729
1551
if_tag.appendChild(tag)
1552
# Add annotation tags for properties
1553
for tag in if_tag.getElementsByTagName("property"):
1554
annots = dict()
1555
for name, prop in self._get_all_dbus_things(
1556
"property"):
1557
if (name == tag.getAttribute("name")
1558
and prop._dbus_interface
1559
== if_tag.getAttribute("name")):
1560
annots.update(getattr(
1561
prop, "_dbus_annotations", {}))
1562
for name, value in annots.items():
1563
ann_tag = document.createElement(
1564
"annotation")
1565
ann_tag.setAttribute("name", name)
1566
ann_tag.setAttribute("value", value)
1567
tag.appendChild(ann_tag)
730
1568
# Add the names to the return values for the
731
1569
# "org.freedesktop.DBus.Properties" methods
732
1570
if (if_tag.getAttribute("name")
746
1584
document.unlink()
747
1585
except (AttributeError, xml.dom.DOMException,
748
1586
xml.parsers.expat.ExpatError) as error:
749
logger.error("Failed to override Introspection method",
750
error)
751
return xmlstring
752
753
1587
log.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
try:
1593
dbus.OBJECT_MANAGER_IFACE
1594
except AttributeError:
1595
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1596
1597
1598
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1599
"""A D-Bus object with an ObjectManager.
1600
1601
Classes inheriting from this exposes the standard
1602
GetManagedObjects call and the InterfacesAdded and
1603
InterfacesRemoved signals on the standard
1604
"org.freedesktop.DBus.ObjectManager" interface.
1605
1606
Note: No signals are sent automatically; they must be sent
1607
manually.
1608
"""
1609
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1610
out_signature="a{oa{sa{sv}}}")
1611
def GetManagedObjects(self):
1612
"""This function must be overridden"""
1613
raise NotImplementedError()
1614
1615
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1616
signature="oa{sa{sv}}")
1617
def InterfacesAdded(self, object_path, interfaces_and_properties):
1618
pass
1619
1620
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1621
def InterfacesRemoved(self, object_path, interfaces):
1622
pass
1623
1624
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1625
out_signature="s",
1626
path_keyword="object_path",
1627
connection_keyword="connection")
1628
def Introspect(self, object_path, connection):
1629
"""Overloading of standard D-Bus method.
1630
1631
Override return argument name of GetManagedObjects to be
1632
"objpath_interfaces_and_properties"
1633
"""
1634
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1635
object_path,
1636
connection)
1637
try:
1638
document = xml.dom.minidom.parseString(xmlstring)
1639
1640
for if_tag in document.getElementsByTagName("interface"):
1641
# Fix argument name for the GetManagedObjects method
1642
if (if_tag.getAttribute("name")
1643
== dbus.OBJECT_MANAGER_IFACE):
1644
for cn in if_tag.getElementsByTagName("method"):
1645
if (cn.getAttribute("name")
1646
== "GetManagedObjects"):
1647
for arg in cn.getElementsByTagName("arg"):
1648
if (arg.getAttribute("direction")
1649
== "out"):
1650
arg.setAttribute(
1651
"name",
1652
"objpath_interfaces"
1653
"_and_properties")
1654
xmlstring = document.toxml("utf-8")
1655
document.unlink()
1656
except (AttributeError, xml.dom.DOMException,
1657
xml.parsers.expat.ExpatError) as error:
1658
log.error("Failed to override Introspection method",
1659
exc_info=error)
1660
return xmlstring
1661
1662
1663
def datetime_to_dbus(dt, variant_level=0):
1664
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1665
if dt is None:
1666
return dbus.String("", variant_level=variant_level)
1667
return dbus.String(dt.isoformat(), variant_level=variant_level)
1668
1669
1670
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1671
"""A class decorator; applied to a subclass of
1672
dbus.service.Object, it will add alternate D-Bus attributes with
1673
interface names according to the "alt_interface_names" mapping.
1674
Usage:
1675
1676
@alternate_dbus_interfaces({"org.example.Interface":
1677
"net.example.AlternateInterface"})
1678
class SampleDBusObject(dbus.service.Object):
1679
@dbus.service.method("org.example.Interface")
1680
def SampleDBusMethod():
1681
pass
1682
1683
The above "SampleDBusMethod" on "SampleDBusObject" will be
1684
reachable via two interfaces: "org.example.Interface" and
1685
"net.example.AlternateInterface", the latter of which will have
1686
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1687
"true", unless "deprecate" is passed with a False value.
1688
1689
This works for methods and signals, and also for D-Bus properties
1690
(from DBusObjectWithProperties) and interfaces (from the
1691
dbus_interface_annotations decorator).
1692
"""
1693
1694
def wrapper(cls):
1695
for orig_interface_name, alt_interface_name in (
1696
alt_interface_names.items()):
1697
attr = {}
1698
interface_names = set()
1699
# Go though all attributes of the class
1700
for attrname, attribute in inspect.getmembers(cls):
1701
# Ignore non-D-Bus attributes, and D-Bus attributes
1702
# with the wrong interface name
1703
if (not hasattr(attribute, "_dbus_interface")
1704
or not attribute._dbus_interface.startswith(
1705
orig_interface_name)):
1706
continue
1707
# Create an alternate D-Bus interface name based on
1708
# the current name
1709
alt_interface = attribute._dbus_interface.replace(
1710
orig_interface_name, alt_interface_name)
1711
interface_names.add(alt_interface)
1712
# Is this a D-Bus signal?
1713
if getattr(attribute, "_dbus_is_signal", False):
1714
# Extract the original non-method undecorated
1715
# function by black magic
1716
if sys.version_info.major == 2:
1717
nonmethod_func = (dict(
1718
zip(attribute.func_code.co_freevars,
1719
attribute.__closure__))
1720
["func"].cell_contents)
1721
else:
1722
nonmethod_func = (dict(
1723
zip(attribute.__code__.co_freevars,
1724
attribute.__closure__))
1725
["func"].cell_contents)
1726
# Create a new, but exactly alike, function
1727
# object, and decorate it to be a new D-Bus signal
1728
# with the alternate D-Bus interface name
1729
new_function = copy_function(nonmethod_func)
1730
new_function = (dbus.service.signal(
1731
alt_interface,
1732
attribute._dbus_signature)(new_function))
1733
# Copy annotations, if any
1734
try:
1735
new_function._dbus_annotations = dict(
1736
attribute._dbus_annotations)
1737
except AttributeError:
1738
pass
1739
1740
# Define a creator of a function to call both the
1741
# original and alternate functions, so both the
1742
# original and alternate signals gets sent when
1743
# the function is called
1744
def fixscope(func1, func2):
1745
"""This function is a scope container to pass
1746
func1 and func2 to the "call_both" function
1747
outside of its arguments"""
1748
1749
@functools.wraps(func2)
1750
def call_both(*args, **kwargs):
1751
"""This function will emit two D-Bus
1752
signals by calling func1 and func2"""
1753
func1(*args, **kwargs)
1754
func2(*args, **kwargs)
1755
# Make wrapper function look like a D-Bus
1756
# signal
1757
for name, attr in inspect.getmembers(func2):
1758
if name.startswith("_dbus_"):
1759
setattr(call_both, name, attr)
1760
1761
return call_both
1762
# Create the "call_both" function and add it to
1763
# the class
1764
attr[attrname] = fixscope(attribute, new_function)
1765
# Is this a D-Bus method?
1766
elif getattr(attribute, "_dbus_is_method", False):
1767
# Create a new, but exactly alike, function
1768
# object. Decorate it to be a new D-Bus method
1769
# with the alternate D-Bus interface name. Add it
1770
# to the class.
1771
attr[attrname] = (
1772
dbus.service.method(
1773
alt_interface,
1774
attribute._dbus_in_signature,
1775
attribute._dbus_out_signature)
1776
(copy_function(attribute)))
1777
# Copy annotations, if any
1778
try:
1779
attr[attrname]._dbus_annotations = dict(
1780
attribute._dbus_annotations)
1781
except AttributeError:
1782
pass
1783
# Is this a D-Bus property?
1784
elif getattr(attribute, "_dbus_is_property", False):
1785
# Create a new, but exactly alike, function
1786
# object, and decorate it to be a new D-Bus
1787
# property with the alternate D-Bus interface
1788
# name. Add it to the class.
1789
attr[attrname] = (dbus_service_property(
1790
alt_interface, attribute._dbus_signature,
1791
attribute._dbus_access,
1792
attribute._dbus_get_args_options
1793
["byte_arrays"])
1794
(copy_function(attribute)))
1795
# Copy annotations, if any
1796
try:
1797
attr[attrname]._dbus_annotations = dict(
1798
attribute._dbus_annotations)
1799
except AttributeError:
1800
pass
1801
# Is this a D-Bus interface?
1802
elif getattr(attribute, "_dbus_is_interface", False):
1803
# Create a new, but exactly alike, function
1804
# object. Decorate it to be a new D-Bus interface
1805
# with the alternate D-Bus interface name. Add it
1806
# to the class.
1807
attr[attrname] = (
1808
dbus_interface_annotations(alt_interface)
1809
(copy_function(attribute)))
1810
if deprecate:
1811
# Deprecate all alternate interfaces
1812
iname = "_AlternateDBusNames_interface_annotation{}"
1813
for interface_name in interface_names:
1814
1815
@dbus_interface_annotations(interface_name)
1816
def func(self):
1817
return {"org.freedesktop.DBus.Deprecated":
1818
"true"}
1819
# Find an unused name
1820
for aname in (iname.format(i)
1821
for i in itertools.count()):
1822
if aname not in attr:
1823
attr[aname] = func
1824
break
1825
if interface_names:
1826
# Replace the class with a new subclass of it with
1827
# methods, signals, etc. as created above.
1828
if sys.version_info.major == 2:
1829
cls = type(b"{}Alternate".format(cls.__name__),
1830
(cls, ), attr)
1831
else:
1832
cls = type("{}Alternate".format(cls.__name__),
1833
(cls, ), attr)
1834
return cls
1835
1836
return wrapper
1837
1838
1839
@alternate_dbus_interfaces({"se.recompile.Mandos":
1840
"se.bsnet.fukt.Mandos"})
754
1841
class ClientDBus(Client, DBusObjectWithProperties):
755
1842
"""A Client class using D-Bus
756
1843
757
1844
Attributes:
758
1845
dbus_object_path: dbus.ObjectPath
759
1846
bus: dbus.SystemBus()
760
1847
"""
761
1848
762
1849
runtime_expansions = (Client.runtime_expansions
763
+ ("dbus_object_path",))
764
1850
+ ("dbus_object_path", ))
1851
1852
_interface = "se.recompile.Mandos.Client"
1853
765
1854
# dbus.service.Object doesn't use super(), so we can't either.
766
767
def __init__(self, bus = None, *args, **kwargs):
768
self._approvals_pending = 0
1855
1856
def __init__(self, bus=None, *args, **kwargs):
769
1857
self.bus = bus
770
1858
Client.__init__(self, *args, **kwargs)
771
1859
# Only now, when this client is initialized, can it show up on
772
1860
# the D-Bus
773
client_object_name = unicode(self.name).translate(
1861
client_object_name = str(self.name).translate(
774
1862
{ord("."): ord("_"),
775
1863
ord("-"): ord("_")})
776
self.dbus_object_path = (dbus.ObjectPath
777
("/clients/" + client_object_name))
1864
self.dbus_object_path = dbus.ObjectPath(
1865
"/clients/" + client_object_name)
778
1866
DBusObjectWithProperties.__init__(self, self.bus,
779
1867
self.dbus_object_path)
780
def _set_expires(self, value):
781
old_value = getattr(self, "_expires", None)
782
self._expires = value
783
if hasattr(self, "dbus_object_path") and old_value != value:
784
dbus_time = (self._datetime_to_dbus(self._expires,
785
variant_level=1))
786
self.PropertyChanged(dbus.String("Expires"),
787
dbus_time)
788
expires = property(lambda self: self._expires, _set_expires)
789
del _set_expires
790
791
def _get_approvals_pending(self):
792
return self._approvals_pending
793
def _set_approvals_pending(self, value):
794
old_value = self._approvals_pending
795
self._approvals_pending = value
796
bval = bool(value)
797
if (hasattr(self, "dbus_object_path")
798
and bval is not bool(old_value)):
799
dbus_bool = dbus.Boolean(bval, variant_level=1)
800
self.PropertyChanged(dbus.String("ApprovalPending"),
801
dbus_bool)
802
803
approvals_pending = property(_get_approvals_pending,
804
_set_approvals_pending)
805
del _get_approvals_pending, _set_approvals_pending
806
807
@staticmethod
808
def _datetime_to_dbus(dt, variant_level=0):
809
"""Convert a UTC datetime.datetime() to a D-Bus type."""
810
if dt is None:
811
return dbus.String("", variant_level = variant_level)
812
return dbus.String(dt.isoformat(),
813
variant_level=variant_level)
814
815
def enable(self):
816
oldstate = getattr(self, "enabled", False)
817
r = Client.enable(self)
818
if oldstate != self.enabled:
819
# Emit D-Bus signals
820
self.PropertyChanged(dbus.String("Enabled"),
821
dbus.Boolean(True, variant_level=1))
822
self.PropertyChanged(
823
dbus.String("LastEnabled"),
824
self._datetime_to_dbus(self.last_enabled,
825
variant_level=1))
826
return r
827
828
def disable(self, quiet = False):
829
oldstate = getattr(self, "enabled", False)
830
r = Client.disable(self, quiet=quiet)
831
if not quiet and oldstate != self.enabled:
832
# Emit D-Bus signal
833
self.PropertyChanged(dbus.String("Enabled"),
834
dbus.Boolean(False, variant_level=1))
835
return r
836
1868
1869
def notifychangeproperty(transform_func, dbus_name,
1870
type_func=lambda x: x,
1871
variant_level=1,
1872
invalidate_only=False,
1873
_interface=_interface):
1874
""" Modify a variable so that it's a property which announces
1875
its changes to DBus.
1876
1877
transform_fun: Function that takes a value and a variant_level
1878
and transforms it to a D-Bus type.
1879
dbus_name: D-Bus name of the variable
1880
type_func: Function that transform the value before sending it
1881
to the D-Bus. Default: no transform
1882
variant_level: D-Bus variant level. Default: 1
1883
"""
1884
attrname = "_{}".format(dbus_name)
1885
1886
def setter(self, value):
1887
if hasattr(self, "dbus_object_path"):
1888
if (not hasattr(self, attrname) or
1889
type_func(getattr(self, attrname, None))
1890
!= type_func(value)):
1891
if invalidate_only:
1892
self.PropertiesChanged(
1893
_interface, dbus.Dictionary(),
1894
dbus.Array((dbus_name, )))
1895
else:
1896
dbus_value = transform_func(
1897
type_func(value),
1898
variant_level=variant_level)
1899
self.PropertyChanged(dbus.String(dbus_name),
1900
dbus_value)
1901
self.PropertiesChanged(
1902
_interface,
1903
dbus.Dictionary({dbus.String(dbus_name):
1904
dbus_value}),
1905
dbus.Array())
1906
setattr(self, attrname, value)
1907
1908
return property(lambda self: getattr(self, attrname), setter)
1909
1910
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1911
approvals_pending = notifychangeproperty(dbus.Boolean,
1912
"ApprovalPending",
1913
type_func=bool)
1914
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1915
last_enabled = notifychangeproperty(datetime_to_dbus,
1916
"LastEnabled")
1917
checker = notifychangeproperty(
1918
dbus.Boolean, "CheckerRunning",
1919
type_func=lambda checker: checker is not None)
1920
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1921
"LastCheckedOK")
1922
last_checker_status = notifychangeproperty(dbus.Int16,
1923
"LastCheckerStatus")
1924
last_approval_request = notifychangeproperty(
1925
datetime_to_dbus, "LastApprovalRequest")
1926
approved_by_default = notifychangeproperty(dbus.Boolean,
1927
"ApprovedByDefault")
1928
approval_delay = notifychangeproperty(
1929
dbus.UInt64, "ApprovalDelay",
1930
type_func=lambda td: td.total_seconds() * 1000)
1931
approval_duration = notifychangeproperty(
1932
dbus.UInt64, "ApprovalDuration",
1933
type_func=lambda td: td.total_seconds() * 1000)
1934
host = notifychangeproperty(dbus.String, "Host")
1935
timeout = notifychangeproperty(
1936
dbus.UInt64, "Timeout",
1937
type_func=lambda td: td.total_seconds() * 1000)
1938
extended_timeout = notifychangeproperty(
1939
dbus.UInt64, "ExtendedTimeout",
1940
type_func=lambda td: td.total_seconds() * 1000)
1941
interval = notifychangeproperty(
1942
dbus.UInt64, "Interval",
1943
type_func=lambda td: td.total_seconds() * 1000)
1944
checker_command = notifychangeproperty(dbus.String, "Checker")
1945
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1946
invalidate_only=True)
1947
1948
del notifychangeproperty
1949
837
1950
def __del__(self, *args, **kwargs):
838
1951
try:
839
1952
self.remove_from_connection()
842
1955
if hasattr(DBusObjectWithProperties, "__del__"):
843
1956
DBusObjectWithProperties.__del__(self, *args, **kwargs)
844
1957
Client.__del__(self, *args, **kwargs)
845
846
def checker_callback(self, pid, condition, command,
847
*args, **kwargs):
848
self.checker_callback_tag = None
849
self.checker = None
850
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String("CheckerRunning"),
852
dbus.Boolean(False, variant_level=1))
853
if os.WIFEXITED(condition):
854
exitstatus = os.WEXITSTATUS(condition)
1958
1959
def checker_callback(self, source, condition,
1960
connection, command, *args, **kwargs):
1961
ret = Client.checker_callback(self, source, condition,
1962
connection, command, *args,
1963
**kwargs)
1964
exitstatus = self.last_checker_status
1965
if exitstatus >= 0:
855
1966
# Emit D-Bus signal
856
1967
self.CheckerCompleted(dbus.Int16(exitstatus),
857
dbus.Int64(condition),
1968
# This is specific to GNU libC
1969
dbus.Int64(exitstatus << 8),
858
1970
dbus.String(command))
859
1971
else:
860
1972
# Emit D-Bus signal
861
1973
self.CheckerCompleted(dbus.Int16(-1),
862
dbus.Int64(condition),
1974
dbus.Int64(
1975
# This is specific to GNU libC
1976
(exitstatus << 8)
1977
| self.last_checker_signal),
863
1978
dbus.String(command))
864
865
return Client.checker_callback(self, pid, condition, command,
866
*args, **kwargs)
867
868
def checked_ok(self, *args, **kwargs):
869
Client.checked_ok(self, *args, **kwargs)
870
# Emit D-Bus signal
871
self.PropertyChanged(
872
dbus.String("LastCheckedOK"),
873
(self._datetime_to_dbus(self.last_checked_ok,
874
variant_level=1)))
875
876
def need_approval(self, *args, **kwargs):
877
r = Client.need_approval(self, *args, **kwargs)
878
# Emit D-Bus signal
879
self.PropertyChanged(
880
dbus.String("LastApprovalRequest"),
881
(self._datetime_to_dbus(self.last_approval_request,
882
variant_level=1)))
883
return r
884
1979
return ret
1980
885
1981
def start_checker(self, *args, **kwargs):
886
old_checker = self.checker
887
if self.checker is not None:
888
old_checker_pid = self.checker.pid
889
else:
890
old_checker_pid = None
1982
old_checker_pid = getattr(self.checker, "pid", None)
891
1983
r = Client.start_checker(self, *args, **kwargs)
892
1984
# Only if new checker process was started
893
1985
if (self.checker is not None
894
1986
and old_checker_pid != self.checker.pid):
895
1987
# Emit D-Bus signal
896
1988
self.CheckerStarted(self.current_checker_command)
897
self.PropertyChanged(
898
dbus.String("CheckerRunning"),
899
dbus.Boolean(True, variant_level=1))
900
return r
901
902
def stop_checker(self, *args, **kwargs):
903
old_checker = getattr(self, "checker", None)
904
r = Client.stop_checker(self, *args, **kwargs)
905
if (old_checker is not None
906
and getattr(self, "checker", None) is None):
907
self.PropertyChanged(dbus.String("CheckerRunning"),
908
dbus.Boolean(False, variant_level=1))
909
1989
return r
910
1990
911
1991
def _reset_approved(self):
912
self._approved = None
1992
self.approved = None
913
1993
return False
914
1994
915
1995
def approve(self, value=True):
1996
self.approved = value
1997
GLib.timeout_add(int(self.approval_duration.total_seconds()
1998
* 1000), self._reset_approved)
916
1999
self.send_changedstate()
917
self._approved = value
918
gobject.timeout_add(self._timedelta_to_milliseconds
919
(self.approval_duration),
920
self._reset_approved)
921
922
923
## D-Bus methods, signals & properties
924
_interface = "se.bsnet.fukt.Mandos.Client"
925
926
## Signals
927
2000
2001
# D-Bus methods, signals & properties
2002
2003
# Interfaces
2004
2005
# Signals
2006
928
2007
# CheckerCompleted - signal
929
2008
@dbus.service.signal(_interface, signature="nxs")
930
2009
def CheckerCompleted(self, exitcode, waitstatus, command):
931
2010
"D-Bus signal"
932
2011
pass
933
2012
934
2013
# CheckerStarted - signal
935
2014
@dbus.service.signal(_interface, signature="s")
936
2015
def CheckerStarted(self, command):
937
2016
"D-Bus signal"
938
2017
pass
939
2018
940
2019
# PropertyChanged - signal
2020
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
941
2021
@dbus.service.signal(_interface, signature="sv")
942
2022
def PropertyChanged(self, property, value):
943
2023
"D-Bus signal"
944
2024
pass
945
2025
946
2026
# GotSecret - signal
947
2027
@dbus.service.signal(_interface)
948
2028
def GotSecret(self):
951
2031
server to mandos-client
952
2032
"""
953
2033
pass
954
2034
955
2035
# Rejected - signal
956
2036
@dbus.service.signal(_interface, signature="s")
957
2037
def Rejected(self, reason):
958
2038
"D-Bus signal"
959
2039
pass
960
2040
961
2041
# NeedApproval - signal
962
2042
@dbus.service.signal(_interface, signature="tb")
963
2043
def NeedApproval(self, timeout, default):
964
2044
"D-Bus signal"
965
2045
return self.need_approval()
966
967
## Methods
968
2046
2047
# Methods
2048
969
2049
# Approve - method
970
2050
@dbus.service.method(_interface, in_signature="b")
971
2051
def Approve(self, value):
972
2052
self.approve(value)
973
2053
974
2054
# CheckedOK - method
975
2055
@dbus.service.method(_interface)
976
2056
def CheckedOK(self):
977
2057
self.checked_ok()
978
2058
979
2059
# Enable - method
2060
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
980
2061
@dbus.service.method(_interface)
981
2062
def Enable(self):
982
2063
"D-Bus method"
983
2064
self.enable()
984
2065
985
2066
# StartChecker - method
2067
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
986
2068
@dbus.service.method(_interface)
987
2069
def StartChecker(self):
988
2070
"D-Bus method"
989
2071
self.start_checker()
990
2072
991
2073
# Disable - method
2074
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
992
2075
@dbus.service.method(_interface)
993
2076
def Disable(self):
994
2077
"D-Bus method"
995
2078
self.disable()
996
2079
997
2080
# StopChecker - method
2081
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
998
2082
@dbus.service.method(_interface)
999
2083
def StopChecker(self):
1000
2084
self.stop_checker()
1001
1002
## Properties
1003
2085
2086
# Properties
2087
1004
2088
# ApprovalPending - property
1005
2089
@dbus_service_property(_interface, signature="b", access="read")
1006
2090
def ApprovalPending_dbus_property(self):
1007
2091
return dbus.Boolean(bool(self.approvals_pending))
1008
2092
1009
2093
# ApprovedByDefault - property
1010
@dbus_service_property(_interface, signature="b",
2094
@dbus_service_property(_interface,
2095
signature="b",
1011
2096
access="readwrite")
1012
2097
def ApprovedByDefault_dbus_property(self, value=None):
1013
2098
if value is None: # get
1014
2099
return dbus.Boolean(self.approved_by_default)
1015
old_value = self.approved_by_default
1016
2100
self.approved_by_default = bool(value)
1017
# Emit D-Bus signal
1018
if old_value != self.approved_by_default:
1019
self.PropertyChanged(dbus.String("ApprovedByDefault"),
1020
dbus.Boolean(value, variant_level=1))
1021
2101
1022
2102
# ApprovalDelay - property
1023
@dbus_service_property(_interface, signature="t",
2103
@dbus_service_property(_interface,
2104
signature="t",
1024
2105
access="readwrite")
1025
2106
def ApprovalDelay_dbus_property(self, value=None):
1026
2107
if value is None: # get
1027
return dbus.UInt64(self.approval_delay_milliseconds())
1028
old_value = self.approval_delay
2108
return dbus.UInt64(self.approval_delay.total_seconds()
2109
* 1000)
1029
2110
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1030
# Emit D-Bus signal
1031
if old_value != self.approval_delay:
1032
self.PropertyChanged(dbus.String("ApprovalDelay"),
1033
dbus.UInt64(value, variant_level=1))
1034
2111
1035
2112
# ApprovalDuration - property
1036
@dbus_service_property(_interface, signature="t",
2113
@dbus_service_property(_interface,
2114
signature="t",
1037
2115
access="readwrite")
1038
2116
def ApprovalDuration_dbus_property(self, value=None):
1039
2117
if value is None: # get
1040
return dbus.UInt64(self._timedelta_to_milliseconds(
1041
self.approval_duration))
1042
old_value = self.approval_duration
2118
return dbus.UInt64(self.approval_duration.total_seconds()
2119
* 1000)
1043
2120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1044
# Emit D-Bus signal
1045
if old_value != self.approval_duration:
1046
self.PropertyChanged(dbus.String("ApprovalDuration"),
1047
dbus.UInt64(value, variant_level=1))
1048
2121
1049
2122
# Name - property
2123
@dbus_annotations(
2124
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1050
2125
@dbus_service_property(_interface, signature="s", access="read")
1051
2126
def Name_dbus_property(self):
1052
2127
return dbus.String(self.name)
1053
2128
2129
# KeyID - property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2132
@dbus_service_property(_interface, signature="s", access="read")
2133
def KeyID_dbus_property(self):
2134
return dbus.String(self.key_id)
2135
1054
2136
# Fingerprint - property
2137
@dbus_annotations(
2138
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1055
2139
@dbus_service_property(_interface, signature="s", access="read")
1056
2140
def Fingerprint_dbus_property(self):
1057
2141
return dbus.String(self.fingerprint)
1058
2142
1059
2143
# Host - property
1060
@dbus_service_property(_interface, signature="s",
2144
@dbus_service_property(_interface,
2145
signature="s",
1061
2146
access="readwrite")
1062
2147
def Host_dbus_property(self, value=None):
1063
2148
if value is None: # get
1064
2149
return dbus.String(self.host)
1065
old_value = self.host
1066
self.host = value
1067
# Emit D-Bus signal
1068
if old_value != self.host:
1069
self.PropertyChanged(dbus.String("Host"),
1070
dbus.String(value, variant_level=1))
1071
2150
self.host = str(value)
2151
1072
2152
# Created - property
2153
@dbus_annotations(
2154
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1073
2155
@dbus_service_property(_interface, signature="s", access="read")
1074
2156
def Created_dbus_property(self):
1075
return dbus.String(self._datetime_to_dbus(self.created))
1076
2157
return datetime_to_dbus(self.created)
2158
1077
2159
# LastEnabled - property
1078
2160
@dbus_service_property(_interface, signature="s", access="read")
1079
2161
def LastEnabled_dbus_property(self):
1080
return self._datetime_to_dbus(self.last_enabled)
1081
2162
return datetime_to_dbus(self.last_enabled)
2163
1082
2164
# Enabled - property
1083
@dbus_service_property(_interface, signature="b",
2165
@dbus_service_property(_interface,
2166
signature="b",
1084
2167
access="readwrite")
1085
2168
def Enabled_dbus_property(self, value=None):
1086
2169
if value is None: # get
1089
2172
self.enable()
1090
2173
else:
1091
2174
self.disable()
1092
2175
1093
2176
# LastCheckedOK - property
1094
@dbus_service_property(_interface, signature="s",
2177
@dbus_service_property(_interface,
2178
signature="s",
1095
2179
access="readwrite")
1096
2180
def LastCheckedOK_dbus_property(self, value=None):
1097
2181
if value is not None:
1098
2182
self.checked_ok()
1099
2183
return
1100
return self._datetime_to_dbus(self.last_checked_ok)
1101
2184
return datetime_to_dbus(self.last_checked_ok)
2185
2186
# LastCheckerStatus - property
2187
@dbus_service_property(_interface, signature="n", access="read")
2188
def LastCheckerStatus_dbus_property(self):
2189
return dbus.Int16(self.last_checker_status)
2190
1102
2191
# Expires - property
1103
2192
@dbus_service_property(_interface, signature="s", access="read")
1104
2193
def Expires_dbus_property(self):
1105
return self._datetime_to_dbus(self.expires)
1106
2194
return datetime_to_dbus(self.expires)
2195
1107
2196
# LastApprovalRequest - property
1108
2197
@dbus_service_property(_interface, signature="s", access="read")
1109
2198
def LastApprovalRequest_dbus_property(self):
1110
return self._datetime_to_dbus(self.last_approval_request)
1111
2199
return datetime_to_dbus(self.last_approval_request)
2200
1112
2201
# Timeout - property
1113
@dbus_service_property(_interface, signature="t",
2202
@dbus_service_property(_interface,
2203
signature="t",
1114
2204
access="readwrite")
1115
2205
def Timeout_dbus_property(self, value=None):
1116
2206
if value is None: # get
1117
return dbus.UInt64(self.timeout_milliseconds())
1118
old_value = self.timeout
2207
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2208
old_timeout = self.timeout
1119
2209
self.timeout = datetime.timedelta(0, 0, 0, value)
1120
# Emit D-Bus signal
1121
if old_value != self.timeout:
1122
self.PropertyChanged(dbus.String("Timeout"),
1123
dbus.UInt64(value, variant_level=1))
1124
if getattr(self, "disable_initiator_tag", None) is None:
1125
return
1126
# Reschedule timeout
1127
gobject.source_remove(self.disable_initiator_tag)
1128
self.disable_initiator_tag = None
1129
self.expires = None
1130
time_to_die = (self.
1131
_timedelta_to_milliseconds((self
1132
.last_checked_ok
1133
+ self.timeout)
1134
- datetime.datetime
1135
.utcnow()))
1136
if time_to_die <= 0:
1137
# The timeout has passed
1138
self.disable()
1139
else:
1140
self.expires = (datetime.datetime.utcnow()
1141
+ datetime.timedelta(milliseconds = time_to_die))
1142
self.disable_initiator_tag = (gobject.timeout_add
1143
(time_to_die, self.disable))
2210
# Reschedule disabling
2211
if self.enabled:
2212
now = datetime.datetime.utcnow()
2213
self.expires += self.timeout - old_timeout
2214
if self.expires <= now:
2215
# The timeout has passed
2216
self.disable()
2217
else:
2218
if (getattr(self, "disable_initiator_tag", None)
2219
is None):
2220
return
2221
GLib.source_remove(self.disable_initiator_tag)
2222
self.disable_initiator_tag = GLib.timeout_add(
2223
int((self.expires - now).total_seconds() * 1000),
2224
self.disable)
1144
2225
1145
2226
# ExtendedTimeout - property
1146
@dbus_service_property(_interface, signature="t",
2227
@dbus_service_property(_interface,
2228
signature="t",
1147
2229
access="readwrite")
1148
2230
def ExtendedTimeout_dbus_property(self, value=None):
1149
2231
if value is None: # get
1150
return dbus.UInt64(self.extended_timeout_milliseconds())
1151
old_value = self.extended_timeout
2232
return dbus.UInt64(self.extended_timeout.total_seconds()
2233
* 1000)
1152
2234
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1153
# Emit D-Bus signal
1154
if old_value != self.extended_timeout:
1155
self.PropertyChanged(dbus.String("ExtendedTimeout"),
1156
dbus.UInt64(value, variant_level=1))
1157
2235
1158
2236
# Interval - property
1159
@dbus_service_property(_interface, signature="t",
2237
@dbus_service_property(_interface,
2238
signature="t",
1160
2239
access="readwrite")
1161
2240
def Interval_dbus_property(self, value=None):
1162
2241
if value is None: # get
1163
return dbus.UInt64(self.interval_milliseconds())
1164
old_value = self.interval
2242
return dbus.UInt64(self.interval.total_seconds() * 1000)
1165
2243
self.interval = datetime.timedelta(0, 0, 0, value)
1166
# Emit D-Bus signal
1167
if old_value != self.interval:
1168
self.PropertyChanged(dbus.String("Interval"),
1169
dbus.UInt64(value, variant_level=1))
1170
2244
if getattr(self, "checker_initiator_tag", None) is None:
1171
2245
return
1172
# Reschedule checker run
1173
gobject.source_remove(self.checker_initiator_tag)
1174
self.checker_initiator_tag = (gobject.timeout_add
1175
(value, self.start_checker))
1176
self.start_checker() # Start one now, too
2246
if self.enabled:
2247
# Reschedule checker run
2248
GLib.source_remove(self.checker_initiator_tag)
2249
self.checker_initiator_tag = GLib.timeout_add(
2250
value, self.start_checker)
2251
self.start_checker() # Start one now, too
1177
2252
1178
2253
# Checker - property
1179
@dbus_service_property(_interface, signature="s",
2254
@dbus_service_property(_interface,
2255
signature="s",
1180
2256
access="readwrite")
1181
2257
def Checker_dbus_property(self, value=None):
1182
2258
if value is None: # get
1183
2259
return dbus.String(self.checker_command)
1184
old_value = self.checker_command
1185
self.checker_command = value
1186
# Emit D-Bus signal
1187
if old_value != self.checker_command:
1188
self.PropertyChanged(dbus.String("Checker"),
1189
dbus.String(self.checker_command,
1190
variant_level=1))
1191
2260
self.checker_command = str(value)
2261
1192
2262
# CheckerRunning - property
1193
@dbus_service_property(_interface, signature="b",
2263
@dbus_service_property(_interface,
2264
signature="b",
1194
2265
access="readwrite")
1195
2266
def CheckerRunning_dbus_property(self, value=None):
1196
2267
if value is None: # get
1199
2270
self.start_checker()
1200
2271
else:
1201
2272
self.stop_checker()
1202
2273
1203
2274
# ObjectPath - property
2275
@dbus_annotations(
2276
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2277
"org.freedesktop.DBus.Deprecated": "true"})
1204
2278
@dbus_service_property(_interface, signature="o", access="read")
1205
2279
def ObjectPath_dbus_property(self):
1206
return self.dbus_object_path # is already a dbus.ObjectPath
1207
2280
return self.dbus_object_path # is already a dbus.ObjectPath
2281
1208
2282
# Secret = property
1209
@dbus_service_property(_interface, signature="ay",
1210
access="write", byte_arrays=True)
2283
@dbus_annotations(
2284
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2285
"invalidates"})
2286
@dbus_service_property(_interface,
2287
signature="ay",
2288
access="write",
2289
byte_arrays=True)
1211
2290
def Secret_dbus_property(self, value):
1212
self.secret = str(value)
1213
2291
self.secret = bytes(value)
2292
1214
2293
del _interface
1215
2294
1216
2295
1217
class ProxyClient(object):
1218
def __init__(self, child_pipe, fpr, address):
2296
class ProxyClient:
2297
def __init__(self, child_pipe, key_id, fpr, address):
1219
2298
self._pipe = child_pipe
1220
self._pipe.send(('init', fpr, address))
2299
self._pipe.send(("init", key_id, fpr, address))
1221
2300
if not self._pipe.recv():
1222
raise KeyError()
2301
raise KeyError(key_id or fpr)
1223
2302
1224
2303
def __getattribute__(self, name):
1225
if(name == '_pipe'):
2304
if name == "_pipe":
1226
2305
return super(ProxyClient, self).__getattribute__(name)
1227
self._pipe.send(('getattr', name))
2306
self._pipe.send(("getattr", name))
1228
2307
data = self._pipe.recv()
1229
if data[0] == 'data':
2308
if data[0] == "data":
1230
2309
return data[1]
1231
if data[0] == 'function':
2310
if data[0] == "function":
2311
1232
2312
def func(*args, **kwargs):
1233
self._pipe.send(('funcall', name, args, kwargs))
2313
self._pipe.send(("funcall", name, args, kwargs))
1234
2314
return self._pipe.recv()[1]
2315
1235
2316
return func
1236
2317
1237
2318
def __setattr__(self, name, value):
1238
if(name == '_pipe'):
2319
if name == "_pipe":
1239
2320
return super(ProxyClient, self).__setattr__(name, value)
1240
self._pipe.send(('setattr', name, value))
2321
self._pipe.send(("setattr", name, value))
1241
2322
1242
2323
1243
2324
class ClientHandler(socketserver.BaseRequestHandler, object):
1244
2325
"""A class to handle client connections.
1245
2326
1246
2327
Instantiated once for each connection to handle it.
1247
2328
Note: This will run in its own forked process."""
1248
2329
1249
2330
def handle(self):
1250
2331
with contextlib.closing(self.server.child_pipe) as child_pipe:
1251
logger.info("TCP connection from: %s",
1252
unicode(self.client_address))
1253
logger.debug("Pipe FD: %d",
1254
self.server.child_pipe.fileno())
1255
1256
session = (gnutls.connection
1257
.ClientSession(self.request,
1258
gnutls.connection
1259
.X509Credentials()))
1260
1261
# Note: gnutls.connection.X509Credentials is really a
1262
# generic GnuTLS certificate credentials object so long as
1263
# no X.509 keys are added to it. Therefore, we can use it
1264
# here despite using OpenPGP certificates.
1265
1266
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1267
# "+AES-256-CBC", "+SHA1",
1268
# "+COMP-NULL", "+CTYPE-OPENPGP",
1269
# "+DHE-DSS"))
2332
log.info("TCP connection from: %s",
2333
str(self.client_address))
2334
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2335
2336
session = gnutls.ClientSession(self.request)
2337
2338
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2339
# "+AES-256-CBC", "+SHA1",
2340
# "+COMP-NULL", "+CTYPE-OPENPGP",
2341
# "+DHE-DSS"))
1270
2342
# Use a fallback default, since this MUST be set.
1271
2343
priority = self.server.gnutls_priority
1272
2344
if priority is None:
1273
2345
priority = "NORMAL"
1274
(gnutls.library.functions
1275
.gnutls_priority_set_direct(session._c_object,
1276
priority, None))
2346
gnutls.priority_set_direct(session,
2347
priority.encode("utf-8"), None)
1277
2348
1278
2349
# Start communication using the Mandos protocol
1279
2350
# Get protocol number
1280
2351
line = self.request.makefile().readline()
1281
logger.debug("Protocol version: %r", line)
2352
log.debug("Protocol version: %r", line)
1282
2353
try:
1283
2354
if int(line.strip().split()[0]) > 1:
1284
raise RuntimeError
2355
raise RuntimeError(line)
1285
2356
except (ValueError, IndexError, RuntimeError) as error:
1286
logger.error("Unknown protocol version: %s", error)
2357
log.error("Unknown protocol version: %s", error)
1287
2358
return
1288
2359
1289
2360
# Start GnuTLS connection
1290
2361
try:
1291
2362
session.handshake()
1292
except gnutls.errors.GNUTLSError as error:
1293
logger.warning("Handshake failed: %s", error)
2363
except gnutls.Error as error:
2364
log.warning("Handshake failed: %s", error)
1294
2365
# Do not run session.bye() here: the session is not
1295
2366
# established. Just abandon the request.
1296
2367
return
1297
logger.debug("Handshake succeeded")
2368
log.debug("Handshake succeeded")
1298
2369
1299
2370
approval_required = False
1300
2371
try:
1301
try:
1302
fpr = self.fingerprint(self.peer_certificate
1303
(session))
1304
except (TypeError,
1305
gnutls.errors.GNUTLSError) as error:
1306
logger.warning("Bad certificate: %s", error)
1307
return
1308
logger.debug("Fingerprint: %s", fpr)
1309
1310
try:
1311
client = ProxyClient(child_pipe, fpr,
2372
if gnutls.has_rawpk:
2373
fpr = b""
2374
try:
2375
key_id = self.key_id(
2376
self.peer_certificate(session))
2377
except (TypeError, gnutls.Error) as error:
2378
log.warning("Bad certificate: %s", error)
2379
return
2380
log.debug("Key ID: %s",
2381
key_id.decode("utf-8",
2382
errors="replace"))
2383
2384
else:
2385
key_id = b""
2386
try:
2387
fpr = self.fingerprint(
2388
self.peer_certificate(session))
2389
except (TypeError, gnutls.Error) as error:
2390
log.warning("Bad certificate: %s", error)
2391
return
2392
log.debug("Fingerprint: %s", fpr)
2393
2394
try:
2395
client = ProxyClient(child_pipe, key_id, fpr,
1312
2396
self.client_address)
1313
2397
except KeyError:
1314
2398
return
1315
2399
1316
2400
if client.approval_delay:
1317
2401
delay = client.approval_delay
1318
2402
client.approvals_pending += 1
1319
2403
approval_required = True
1320
2404
1321
2405
while True:
1322
2406
if not client.enabled:
1323
logger.info("Client %s is disabled",
1324
client.name)
2407
log.info("Client %s is disabled", client.name)
1325
2408
if self.server.use_dbus:
1326
2409
# Emit D-Bus signal
1327
client.Rejected("Disabled")
2410
client.Rejected("Disabled")
1328
2411
return
1329
1330
if client._approved or not client.approval_delay:
1331
#We are approved or approval is disabled
2412
2413
if client.approved or not client.approval_delay:
2414
# We are approved or approval is disabled
1332
2415
break
1333
elif client._approved is None:
1334
logger.info("Client %s needs approval",
2416
elif client.approved is None:
2417
log.info("Client %s needs approval",
2418
client.name)
2419
if self.server.use_dbus:
2420
# Emit D-Bus signal
2421
client.NeedApproval(
2422
client.approval_delay.total_seconds()
2423
* 1000, client.approved_by_default)
2424
else:
2425
log.warning("Client %s was not approved",
1335
2426
client.name)
1336
2427
if self.server.use_dbus:
1337
2428
# Emit D-Bus signal
1338
client.NeedApproval(
1339
client.approval_delay_milliseconds(),
1340
client.approved_by_default)
1341
else:
1342
logger.warning("Client %s was not approved",
1343
client.name)
1344
if self.server.use_dbus:
1345
# Emit D-Bus signal
1346
2429
client.Rejected("Denied")
1347
2430
return
1348
1349
#wait until timeout or approved
1350
#x = float(client._timedelta_to_milliseconds(delay))
2431
2432
# wait until timeout or approved
1351
2433
time = datetime.datetime.now()
1352
2434
client.changedstate.acquire()
1353
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2435
client.changedstate.wait(delay.total_seconds())
1354
2436
client.changedstate.release()
1355
2437
time2 = datetime.datetime.now()
1356
2438
if (time2 - time) >= delay:
1357
2439
if not client.approved_by_default:
1358
logger.warning("Client %s timed out while"
1359
" waiting for approval",
1360
client.name)
2440
log.warning("Client %s timed out while"
2441
" waiting for approval",
2442
client.name)
1361
2443
if self.server.use_dbus:
1362
2444
# Emit D-Bus signal
1363
2445
client.Rejected("Approval timed out")
1366
2448
break
1367
2449
else:
1368
2450
delay -= time2 - time
1369
1370
sent_size = 0
1371
while sent_size < len(client.secret):
1372
try:
1373
sent = session.send(client.secret[sent_size:])
1374
except gnutls.errors.GNUTLSError as error:
1375
logger.warning("gnutls send failed")
1376
return
1377
logger.debug("Sent: %d, remaining: %d",
1378
sent, len(client.secret)
1379
- (sent_size + sent))
1380
sent_size += sent
1381
1382
logger.info("Sending secret to %s", client.name)
1383
# bump the timeout as if seen
1384
client.checked_ok(client.extended_timeout)
2451
2452
try:
2453
session.send(client.secret)
2454
except gnutls.Error as error:
2455
log.warning("gnutls send failed", exc_info=error)
2456
return
2457
2458
log.info("Sending secret to %s", client.name)
2459
# bump the timeout using extended_timeout
2460
client.bump_timeout(client.extended_timeout)
1385
2461
if self.server.use_dbus:
1386
2462
# Emit D-Bus signal
1387
2463
client.GotSecret()
1388
2464
1389
2465
finally:
1390
2466
if approval_required:
1391
2467
client.approvals_pending -= 1
1392
2468
try:
1393
2469
session.bye()
1394
except gnutls.errors.GNUTLSError as error:
1395
logger.warning("GnuTLS bye failed")
1396
2470
except gnutls.Error as error:
2471
log.warning("GnuTLS bye failed", exc_info=error)
2472
1397
2473
@staticmethod
1398
2474
def peer_certificate(session):
1399
"Return the peer's OpenPGP certificate as a bytestring"
1400
# If not an OpenPGP certificate...
1401
if (gnutls.library.functions
1402
.gnutls_certificate_type_get(session._c_object)
1403
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1404
# ...do the normal thing
1405
return session.peer_certificate
2475
"Return the peer's certificate as a bytestring"
2476
try:
2477
cert_type = gnutls.certificate_type_get2(
2478
session, gnutls.CTYPE_PEERS)
2479
except AttributeError:
2480
cert_type = gnutls.certificate_type_get(session)
2481
if gnutls.has_rawpk:
2482
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2483
else:
2484
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2485
# If not a valid certificate type...
2486
if cert_type not in valid_cert_types:
2487
log.info("Cert type %r not in %r", cert_type,
2488
valid_cert_types)
2489
# ...return invalid data
2490
return b""
1406
2491
list_size = ctypes.c_uint(1)
1407
cert_list = (gnutls.library.functions
1408
.gnutls_certificate_get_peers
1409
(session._c_object, ctypes.byref(list_size)))
2492
cert_list = (gnutls.certificate_get_peers
2493
(session, ctypes.byref(list_size)))
1410
2494
if not bool(cert_list) and list_size.value != 0:
1411
raise gnutls.errors.GNUTLSError("error getting peer"
1412
" certificate")
2495
raise gnutls.Error("error getting peer certificate")
1413
2496
if list_size.value == 0:
1414
2497
return None
1415
2498
cert = cert_list[0]
1416
2499
return ctypes.string_at(cert.data, cert.size)
1417
2500
2501
@staticmethod
2502
def key_id(certificate):
2503
"Convert a certificate bytestring to a hexdigit key ID"
2504
# New GnuTLS "datum" with the public key
2505
datum = gnutls.datum_t(
2506
ctypes.cast(ctypes.c_char_p(certificate),
2507
ctypes.POINTER(ctypes.c_ubyte)),
2508
ctypes.c_uint(len(certificate)))
2509
# XXX all these need to be created in the gnutls "module"
2510
# New empty GnuTLS certificate
2511
pubkey = gnutls.pubkey_t()
2512
gnutls.pubkey_init(ctypes.byref(pubkey))
2513
# Import the raw public key into the certificate
2514
gnutls.pubkey_import(pubkey,
2515
ctypes.byref(datum),
2516
gnutls.X509_FMT_DER)
2517
# New buffer for the key ID
2518
buf = ctypes.create_string_buffer(32)
2519
buf_len = ctypes.c_size_t(len(buf))
2520
# Get the key ID from the raw public key into the buffer
2521
gnutls.pubkey_get_key_id(
2522
pubkey,
2523
gnutls.KEYID_USE_SHA256,
2524
ctypes.cast(ctypes.byref(buf),
2525
ctypes.POINTER(ctypes.c_ubyte)),
2526
ctypes.byref(buf_len))
2527
# Deinit the certificate
2528
gnutls.pubkey_deinit(pubkey)
2529
2530
# Convert the buffer to a Python bytestring
2531
key_id = ctypes.string_at(buf, buf_len.value)
2532
# Convert the bytestring to hexadecimal notation
2533
hex_key_id = binascii.hexlify(key_id).upper()
2534
return hex_key_id
2535
1418
2536
@staticmethod
1419
2537
def fingerprint(openpgp):
1420
2538
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1421
2539
# New GnuTLS "datum" with the OpenPGP public key
1422
datum = (gnutls.library.types
1423
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1424
ctypes.POINTER
1425
(ctypes.c_ubyte)),
1426
ctypes.c_uint(len(openpgp))))
2540
datum = gnutls.datum_t(
2541
ctypes.cast(ctypes.c_char_p(openpgp),
2542
ctypes.POINTER(ctypes.c_ubyte)),
2543
ctypes.c_uint(len(openpgp)))
1427
2544
# New empty GnuTLS certificate
1428
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1429
(gnutls.library.functions
1430
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2545
crt = gnutls.openpgp_crt_t()
2546
gnutls.openpgp_crt_init(ctypes.byref(crt))
1431
2547
# Import the OpenPGP public key into the certificate
1432
(gnutls.library.functions
1433
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1434
gnutls.library.constants
1435
.GNUTLS_OPENPGP_FMT_RAW))
2548
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2549
gnutls.OPENPGP_FMT_RAW)
1436
2550
# Verify the self signature in the key
1437
2551
crtverify = ctypes.c_uint()
1438
(gnutls.library.functions
1439
.gnutls_openpgp_crt_verify_self(crt, 0,
1440
ctypes.byref(crtverify)))
2552
gnutls.openpgp_crt_verify_self(crt, 0,
2553
ctypes.byref(crtverify))
1441
2554
if crtverify.value != 0:
1442
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1443
raise (gnutls.errors.CertificateSecurityError
1444
("Verify failed"))
2555
gnutls.openpgp_crt_deinit(crt)
2556
raise gnutls.CertificateSecurityError(code
2557
=crtverify.value)
1445
2558
# New buffer for the fingerprint
1446
2559
buf = ctypes.create_string_buffer(20)
1447
2560
buf_len = ctypes.c_size_t()
1448
2561
# Get the fingerprint from the certificate into the buffer
1449
(gnutls.library.functions
1450
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1451
ctypes.byref(buf_len)))
2562
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2563
ctypes.byref(buf_len))
1452
2564
# Deinit the certificate
1453
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2565
gnutls.openpgp_crt_deinit(crt)
1454
2566
# Convert the buffer to a Python bytestring
1455
2567
fpr = ctypes.string_at(buf, buf_len.value)
1456
2568
# Convert the bytestring to hexadecimal notation
1457
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2569
hex_fpr = binascii.hexlify(fpr).upper()
1458
2570
return hex_fpr
1459
2571
1460
2572
1461
class MultiprocessingMixIn(object):
2573
class MultiprocessingMixIn:
1462
2574
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2575
1463
2576
def sub_process_main(self, request, address):
1464
2577
try:
1465
2578
self.finish_request(request, address)
1466
except:
2579
except Exception:
1467
2580
self.handle_error(request, address)
1468
2581
self.close_request(request)
1469
2582
1470
2583
def process_request(self, request, address):
1471
2584
"""Start a new process to process the request."""
1472
multiprocessing.Process(target = self.sub_process_main,
1473
args = (request, address)).start()
1474
1475
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2585
proc = multiprocessing.Process(target=self.sub_process_main,
2586
args=(request, address))
2587
proc.start()
2588
return proc
2589
2590
2591
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1476
2592
""" adds a pipe to the MixIn """
2593
1477
2594
def process_request(self, request, client_address):
1478
2595
"""Overrides and wraps the original process_request().
1479
2596
1480
2597
This function creates a new pipe in self.pipe
1481
2598
"""
1482
2599
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1483
2600
1484
super(MultiprocessingMixInWithPipe,
1485
self).process_request(request, client_address)
2601
proc = MultiprocessingMixIn.process_request(self, request,
2602
client_address)
1486
2603
self.child_pipe.close()
1487
self.add_pipe(parent_pipe)
2604
self.add_pipe(parent_pipe, proc)
1488
2605
1489
def add_pipe(self, parent_pipe):
2606
def add_pipe(self, parent_pipe, proc):
1490
2607
"""Dummy function; override as necessary"""
1491
raise NotImplementedError
2608
raise NotImplementedError()
2609
1492
2610
1493
2611
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1494
socketserver.TCPServer, object):
1495
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1496
2612
socketserver.TCPServer):
2613
"""IPv6-capable TCP server. Accepts None as address and/or port
2614
1497
2615
Attributes:
1498
2616
enabled: Boolean; whether this server is activated yet
1499
2617
interface: None or a network interface name (string)
1500
2618
use_ipv6: Boolean; to use IPv6 or not
1501
2619
"""
2620
1502
2621
def __init__(self, server_address, RequestHandlerClass,
1503
interface=None, use_ipv6=True):
2622
interface=None,
2623
use_ipv6=True,
2624
socketfd=None):
2625
"""If socketfd is set, use that file descriptor instead of
2626
creating a new one with socket.socket().
2627
"""
1504
2628
self.interface = interface
1505
2629
if use_ipv6:
1506
2630
self.address_family = socket.AF_INET6
2631
if socketfd is not None:
2632
# Save the file descriptor
2633
self.socketfd = socketfd
2634
# Save the original socket.socket() function
2635
self.socket_socket = socket.socket
2636
2637
# To implement --socket, we monkey patch socket.socket.
2638
#
2639
# (When socketserver.TCPServer is a new-style class, we
2640
# could make self.socket into a property instead of monkey
2641
# patching socket.socket.)
2642
#
2643
# Create a one-time-only replacement for socket.socket()
2644
@functools.wraps(socket.socket)
2645
def socket_wrapper(*args, **kwargs):
2646
# Restore original function so subsequent calls are
2647
# not affected.
2648
socket.socket = self.socket_socket
2649
del self.socket_socket
2650
# This time only, return a new socket object from the
2651
# saved file descriptor.
2652
return socket.fromfd(self.socketfd, *args, **kwargs)
2653
# Replace socket.socket() function with wrapper
2654
socket.socket = socket_wrapper
2655
# The socketserver.TCPServer.__init__ will call
2656
# socket.socket(), which might be our replacement,
2657
# socket_wrapper(), if socketfd was set.
1507
2658
socketserver.TCPServer.__init__(self, server_address,
1508
2659
RequestHandlerClass)
2660
1509
2661
def server_bind(self):
1510
2662
"""This overrides the normal server_bind() function
1511
2663
to bind to an interface if one was specified, and also NOT to
1512
2664
bind to an address or port if they were not specified."""
2665
global SO_BINDTODEVICE
1513
2666
if self.interface is not None:
1514
2667
if SO_BINDTODEVICE is None:
1515
logger.error("SO_BINDTODEVICE does not exist;"
1516
" cannot bind to interface %s",
1517
self.interface)
1518
else:
1519
try:
1520
self.socket.setsockopt(socket.SOL_SOCKET,
1521
SO_BINDTODEVICE,
1522
str(self.interface
1523
+ '\0'))
1524
except socket.error as error:
1525
if error[0] == errno.EPERM:
1526
logger.error("No permission to"
1527
" bind to interface %s",
1528
self.interface)
1529
elif error[0] == errno.ENOPROTOOPT:
1530
logger.error("SO_BINDTODEVICE not available;"
1531
" cannot bind to interface %s",
1532
self.interface)
1533
else:
1534
raise
2668
# Fall back to a hard-coded value which seems to be
2669
# common enough.
2670
log.warning("SO_BINDTODEVICE not found, trying 25")
2671
SO_BINDTODEVICE = 25
2672
try:
2673
self.socket.setsockopt(
2674
socket.SOL_SOCKET, SO_BINDTODEVICE,
2675
(self.interface + "\0").encode("utf-8"))
2676
except socket.error as error:
2677
if error.errno == errno.EPERM:
2678
log.error("No permission to bind to interface %s",
2679
self.interface)
2680
elif error.errno == errno.ENOPROTOOPT:
2681
log.error("SO_BINDTODEVICE not available; cannot"
2682
" bind to interface %s", self.interface)
2683
elif error.errno == errno.ENODEV:
2684
log.error("Interface %s does not exist, cannot"
2685
" bind", self.interface)
2686
else:
2687
raise
1535
2688
# Only bind(2) the socket if we really need to.
1536
2689
if self.server_address[0] or self.server_address[1]:
2690
if self.server_address[1]:
2691
self.allow_reuse_address = True
1537
2692
if not self.server_address[0]:
1538
2693
if self.address_family == socket.AF_INET6:
1539
any_address = "::" # in6addr_any
2694
any_address = "::" # in6addr_any
1540
2695
else:
1541
any_address = socket.INADDR_ANY
2696
any_address = "0.0.0.0" # INADDR_ANY
1542
2697
self.server_address = (any_address,
1543
2698
self.server_address[1])
1544
2699
elif not self.server_address[1]:
1545
self.server_address = (self.server_address[0],
1546
0)
2700
self.server_address = (self.server_address[0], 0)
1547
2701
# if self.interface:
1548
2702
# self.server_address = (self.server_address[0],
1549
2703
# 0, # port
1555
2709
1556
2710
class MandosServer(IPv6_TCPServer):
1557
2711
"""Mandos server.
1558
2712
1559
2713
Attributes:
1560
2714
clients: set of Client objects
1561
2715
gnutls_priority GnuTLS priority string
1562
2716
use_dbus: Boolean; to emit D-Bus signals or not
1563
1564
Assumes a gobject.MainLoop event loop.
2717
2718
Assumes a GLib.MainLoop event loop.
1565
2719
"""
2720
1566
2721
def __init__(self, server_address, RequestHandlerClass,
1567
interface=None, use_ipv6=True, clients=None,
1568
gnutls_priority=None, use_dbus=True):
2722
interface=None,
2723
use_ipv6=True,
2724
clients=None,
2725
gnutls_priority=None,
2726
use_dbus=True,
2727
socketfd=None):
1569
2728
self.enabled = False
1570
2729
self.clients = clients
1571
2730
if self.clients is None:
1572
self.clients = set()
2731
self.clients = {}
1573
2732
self.use_dbus = use_dbus
1574
2733
self.gnutls_priority = gnutls_priority
1575
2734
IPv6_TCPServer.__init__(self, server_address,
1576
2735
RequestHandlerClass,
1577
interface = interface,
1578
use_ipv6 = use_ipv6)
2736
interface=interface,
2737
use_ipv6=use_ipv6,
2738
socketfd=socketfd)
2739
1579
2740
def server_activate(self):
1580
2741
if self.enabled:
1581
2742
return socketserver.TCPServer.server_activate(self)
2743
1582
2744
def enable(self):
1583
2745
self.enabled = True
1584
def add_pipe(self, parent_pipe):
2746
2747
def add_pipe(self, parent_pipe, proc):
1585
2748
# Call "handle_ipc" for both data and EOF events
1586
gobject.io_add_watch(parent_pipe.fileno(),
1587
gobject.IO_IN | gobject.IO_HUP,
1588
functools.partial(self.handle_ipc,
1589
parent_pipe = parent_pipe))
1590
1591
def handle_ipc(self, source, condition, parent_pipe=None,
2749
GLib.io_add_watch(
2750
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2751
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2752
functools.partial(self.handle_ipc,
2753
parent_pipe=parent_pipe,
2754
proc=proc))
2755
2756
def handle_ipc(self, source, condition,
2757
parent_pipe=None,
2758
proc=None,
1592
2759
client_object=None):
1593
condition_names = {
1594
gobject.IO_IN: "IN", # There is data to read.
1595
gobject.IO_OUT: "OUT", # Data can be written (without
1596
# blocking).
1597
gobject.IO_PRI: "PRI", # There is urgent data to read.
1598
gobject.IO_ERR: "ERR", # Error condition.
1599
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1600
# broken, usually for pipes and
1601
# sockets).
1602
}
1603
conditions_string = ' | '.join(name
1604
for cond, name in
1605
condition_names.iteritems()
1606
if cond & condition)
1607
# error or the other end of multiprocessing.Pipe has closed
1608
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2760
# error, or the other end of multiprocessing.Pipe has closed
2761
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2762
# Wait for other process to exit
2763
proc.join()
1609
2764
return False
1610
2765
1611
2766
# Read a request from the child
1612
2767
request = parent_pipe.recv()
1613
2768
command = request[0]
1614
1615
if command == 'init':
1616
fpr = request[1]
1617
address = request[2]
1618
1619
for c in self.clients:
1620
if c.fingerprint == fpr:
2769
2770
if command == "init":
2771
key_id = request[1].decode("ascii")
2772
fpr = request[2].decode("ascii")
2773
address = request[3]
2774
2775
for c in self.clients.values():
2776
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2777
"27AE41E4649B934CA495991B7852B855"):
2778
continue
2779
if key_id and c.key_id == key_id:
2780
client = c
2781
break
2782
if fpr and c.fingerprint == fpr:
1621
2783
client = c
1622
2784
break
1623
2785
else:
1624
logger.info("Client not found for fingerprint: %s, ad"
1625
"dress: %s", fpr, address)
2786
log.info("Client not found for key ID: %s, address:"
2787
" %s", key_id or fpr, address)
1626
2788
if self.use_dbus:
1627
2789
# Emit D-Bus signal
1628
mandos_dbus_service.ClientNotFound(fpr, address[0])
2790
mandos_dbus_service.ClientNotFound(key_id or fpr,
2791
address[0])
1629
2792
parent_pipe.send(False)
1630
2793
return False
1631
1632
gobject.io_add_watch(parent_pipe.fileno(),
1633
gobject.IO_IN | gobject.IO_HUP,
1634
functools.partial(self.handle_ipc,
1635
parent_pipe = parent_pipe,
1636
client_object = client))
2794
2795
GLib.io_add_watch(
2796
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2797
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2798
functools.partial(self.handle_ipc,
2799
parent_pipe=parent_pipe,
2800
proc=proc,
2801
client_object=client))
1637
2802
parent_pipe.send(True)
1638
# remove the old hook in favor of the new above hook on same fileno
2803
# remove the old hook in favor of the new above hook on
2804
# same fileno
1639
2805
return False
1640
if command == 'funcall':
2806
if command == "funcall":
1641
2807
funcname = request[1]
1642
2808
args = request[2]
1643
2809
kwargs = request[3]
1644
1645
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1646
1647
if command == 'getattr':
2810
2811
parent_pipe.send(("data", getattr(client_object,
2812
funcname)(*args,
2813
**kwargs)))
2814
2815
if command == "getattr":
1648
2816
attrname = request[1]
1649
if callable(client_object.__getattribute__(attrname)):
1650
parent_pipe.send(('function',))
2817
if isinstance(client_object.__getattribute__(attrname),
2818
collections.abc.Callable):
2819
parent_pipe.send(("function", ))
1651
2820
else:
1652
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1653
1654
if command == 'setattr':
2821
parent_pipe.send((
2822
"data", client_object.__getattribute__(attrname)))
2823
2824
if command == "setattr":
1655
2825
attrname = request[1]
1656
2826
value = request[2]
1657
2827
setattr(client_object, attrname, value)
1659
2829
return True
1660
2830
1661
2831
2832
def rfc3339_duration_to_delta(duration):
2833
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2834
2835
>>> timedelta = datetime.timedelta
2836
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2837
True
2838
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2839
True
2840
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2841
True
2842
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2843
True
2844
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2845
True
2846
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2847
True
2848
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2849
True
2850
>>> del timedelta
2851
"""
2852
2853
# Parsing an RFC 3339 duration with regular expressions is not
2854
# possible - there would have to be multiple places for the same
2855
# values, like seconds. The current code, while more esoteric, is
2856
# cleaner without depending on a parsing library. If Python had a
2857
# built-in library for parsing we would use it, but we'd like to
2858
# avoid excessive use of external libraries.
2859
2860
# New type for defining tokens, syntax, and semantics all-in-one
2861
Token = collections.namedtuple("Token", (
2862
"regexp", # To match token; if "value" is not None, must have
2863
# a "group" containing digits
2864
"value", # datetime.timedelta or None
2865
"followers")) # Tokens valid after this token
2866
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2867
# the "duration" ABNF definition in RFC 3339, Appendix A.
2868
token_end = Token(re.compile(r"$"), None, frozenset())
2869
token_second = Token(re.compile(r"(\d+)S"),
2870
datetime.timedelta(seconds=1),
2871
frozenset((token_end, )))
2872
token_minute = Token(re.compile(r"(\d+)M"),
2873
datetime.timedelta(minutes=1),
2874
frozenset((token_second, token_end)))
2875
token_hour = Token(re.compile(r"(\d+)H"),
2876
datetime.timedelta(hours=1),
2877
frozenset((token_minute, token_end)))
2878
token_time = Token(re.compile(r"T"),
2879
None,
2880
frozenset((token_hour, token_minute,
2881
token_second)))
2882
token_day = Token(re.compile(r"(\d+)D"),
2883
datetime.timedelta(days=1),
2884
frozenset((token_time, token_end)))
2885
token_month = Token(re.compile(r"(\d+)M"),
2886
datetime.timedelta(weeks=4),
2887
frozenset((token_day, token_end)))
2888
token_year = Token(re.compile(r"(\d+)Y"),
2889
datetime.timedelta(weeks=52),
2890
frozenset((token_month, token_end)))
2891
token_week = Token(re.compile(r"(\d+)W"),
2892
datetime.timedelta(weeks=1),
2893
frozenset((token_end, )))
2894
token_duration = Token(re.compile(r"P"), None,
2895
frozenset((token_year, token_month,
2896
token_day, token_time,
2897
token_week)))
2898
# Define starting values:
2899
# Value so far
2900
value = datetime.timedelta()
2901
found_token = None
2902
# Following valid tokens
2903
followers = frozenset((token_duration, ))
2904
# String left to parse
2905
s = duration
2906
# Loop until end token is found
2907
while found_token is not token_end:
2908
# Search for any currently valid tokens
2909
for token in followers:
2910
match = token.regexp.match(s)
2911
if match is not None:
2912
# Token found
2913
if token.value is not None:
2914
# Value found, parse digits
2915
factor = int(match.group(1), 10)
2916
# Add to value so far
2917
value += factor * token.value
2918
# Strip token from string
2919
s = token.regexp.sub("", s, 1)
2920
# Go to found token
2921
found_token = token
2922
# Set valid next tokens
2923
followers = found_token.followers
2924
break
2925
else:
2926
# No currently valid tokens were found
2927
raise ValueError("Invalid RFC 3339 duration: {!r}"
2928
.format(duration))
2929
# End token found
2930
return value
2931
2932
1662
2933
def string_to_delta(interval):
1663
2934
"""Parse a string and return a datetime.timedelta
1664
1665
>>> string_to_delta('7d')
1666
datetime.timedelta(7)
1667
>>> string_to_delta('60s')
1668
datetime.timedelta(0, 60)
1669
>>> string_to_delta('60m')
1670
datetime.timedelta(0, 3600)
1671
>>> string_to_delta('24h')
1672
datetime.timedelta(1)
1673
>>> string_to_delta('1w')
1674
datetime.timedelta(7)
1675
>>> string_to_delta('5m 30s')
1676
datetime.timedelta(0, 330)
2935
2936
>>> string_to_delta("7d") == datetime.timedelta(7)
2937
True
2938
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2939
True
2940
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2941
True
2942
>>> string_to_delta("24h") == datetime.timedelta(1)
2943
True
2944
>>> string_to_delta("1w") == datetime.timedelta(7)
2945
True
2946
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2947
True
1677
2948
"""
2949
2950
try:
2951
return rfc3339_duration_to_delta(interval)
2952
except ValueError:
2953
pass
2954
1678
2955
timevalue = datetime.timedelta(0)
1679
2956
for s in interval.split():
1680
2957
try:
1681
suffix = unicode(s[-1])
2958
suffix = s[-1]
1682
2959
value = int(s[:-1])
1683
2960
if suffix == "d":
1684
2961
delta = datetime.timedelta(value)
1691
2968
elif suffix == "w":
1692
2969
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1693
2970
else:
1694
raise ValueError("Unknown suffix %r" % suffix)
1695
except (ValueError, IndexError) as e:
2971
raise ValueError("Unknown suffix {!r}".format(suffix))
2972
except IndexError as e:
1696
2973
raise ValueError(*(e.args))
1697
2974
timevalue += delta
1698
2975
return timevalue
1699
2976
1700
2977
1701
def if_nametoindex(interface):
1702
"""Call the C function if_nametoindex(), or equivalent
1703
1704
Note: This function cannot accept a unicode string."""
1705
global if_nametoindex
1706
try:
1707
if_nametoindex = (ctypes.cdll.LoadLibrary
1708
(ctypes.util.find_library("c"))
1709
.if_nametoindex)
1710
except (OSError, AttributeError):
1711
logger.warning("Doing if_nametoindex the hard way")
1712
def if_nametoindex(interface):
1713
"Get an interface index the hard way, i.e. using fcntl()"
1714
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1715
with contextlib.closing(socket.socket()) as s:
1716
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1717
struct.pack(str("16s16x"),
1718
interface))
1719
interface_index = struct.unpack(str("I"),
1720
ifreq[16:20])[0]
1721
return interface_index
1722
return if_nametoindex(interface)
1723
1724
1725
def daemon(nochdir = False, noclose = False):
2978
def daemon(nochdir=False, noclose=False):
1726
2979
"""See daemon(3). Standard BSD Unix function.
1727
2980
1728
2981
This should really exist as os.daemon, but it doesn't (yet)."""
1729
2982
if os.fork():
1730
2983
sys.exit()
1735
2988
sys.exit()
1736
2989
if not noclose:
1737
2990
# Close all standard open file descriptors
1738
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2991
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1739
2992
if not stat.S_ISCHR(os.fstat(null).st_mode):
1740
2993
raise OSError(errno.ENODEV,
1741
"%s not a character device"
1742
% os.path.devnull)
2994
"{} not a character device"
2995
.format(os.devnull))
1743
2996
os.dup2(null, sys.stdin.fileno())
1744
2997
os.dup2(null, sys.stdout.fileno())
1745
2998
os.dup2(null, sys.stderr.fileno())
1748
3001
1749
3002
1750
3003
def main():
1751
3004
1752
3005
##################################################################
1753
3006
# Parsing of options, both command line and config file
1754
3007
1755
3008
parser = argparse.ArgumentParser()
1756
3009
parser.add_argument("-v", "--version", action="version",
1757
version = "%%(prog)s %s" % version,
3010
version="%(prog)s {}".format(version),
1758
3011
help="show version number and exit")
1759
3012
parser.add_argument("-i", "--interface", metavar="IF",
1760
3013
help="Bind to interface IF")
1766
3019
help="Run self-test")
1767
3020
parser.add_argument("--debug", action="store_true",
1768
3021
help="Debug mode; run in foreground and log"
1769
" to terminal")
3022
" to terminal", default=None)
1770
3023
parser.add_argument("--debuglevel", metavar="LEVEL",
1771
3024
help="Debug level for stdout output")
1772
3025
parser.add_argument("--priority", help="GnuTLS"
1779
3032
" files")
1780
3033
parser.add_argument("--no-dbus", action="store_false",
1781
3034
dest="use_dbus", help="Do not provide D-Bus"
1782
" system bus interface")
3035
" system bus interface", default=None)
1783
3036
parser.add_argument("--no-ipv6", action="store_false",
1784
dest="use_ipv6", help="Do not use IPv6")
3037
dest="use_ipv6", help="Do not use IPv6",
3038
default=None)
3039
parser.add_argument("--no-restore", action="store_false",
3040
dest="restore", help="Do not restore stored"
3041
" state", default=None)
3042
parser.add_argument("--socket", type=int,
3043
help="Specify a file descriptor to a network"
3044
" socket to use instead of creating one")
3045
parser.add_argument("--statedir", metavar="DIR",
3046
help="Directory to save/restore state in")
3047
parser.add_argument("--foreground", action="store_true",
3048
help="Run in foreground", default=None)
3049
parser.add_argument("--no-zeroconf", action="store_false",
3050
dest="zeroconf", help="Do not use Zeroconf",
3051
default=None)
3052
1785
3053
options = parser.parse_args()
1786
1787
if options.check:
1788
import doctest
1789
doctest.testmod()
1790
sys.exit()
1791
3054
1792
3055
# Default values for config file for server-global settings
1793
server_defaults = { "interface": "",
1794
"address": "",
1795
"port": "",
1796
"debug": "False",
1797
"priority":
1798
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1799
"servicename": "Mandos",
1800
"use_dbus": "True",
1801
"use_ipv6": "True",
1802
"debuglevel": "",
1803
}
1804
3056
if gnutls.has_rawpk:
3057
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3058
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3059
else:
3060
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3061
":+SIGN-DSA-SHA256")
3062
server_defaults = {"interface": "",
3063
"address": "",
3064
"port": "",
3065
"debug": "False",
3066
"priority": priority,
3067
"servicename": "Mandos",
3068
"use_dbus": "True",
3069
"use_ipv6": "True",
3070
"debuglevel": "",
3071
"restore": "True",
3072
"socket": "",
3073
"statedir": "/var/lib/mandos",
3074
"foreground": "False",
3075
"zeroconf": "True",
3076
}
3077
del priority
3078
1805
3079
# Parse config file for server-global settings
1806
server_config = configparser.SafeConfigParser(server_defaults)
3080
server_config = configparser.ConfigParser(server_defaults)
1807
3081
del server_defaults
1808
server_config.read(os.path.join(options.configdir,
1809
"mandos.conf"))
1810
# Convert the SafeConfigParser object to a dict
3082
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3083
# Convert the ConfigParser object to a dict
1811
3084
server_settings = server_config.defaults()
1812
3085
# Use the appropriate methods on the non-string config options
1813
for option in ("debug", "use_dbus", "use_ipv6"):
3086
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3087
"foreground", "zeroconf"):
1814
3088
server_settings[option] = server_config.getboolean("DEFAULT",
1815
3089
option)
1816
3090
if server_settings["port"]:
1817
3091
server_settings["port"] = server_config.getint("DEFAULT",
1818
3092
"port")
3093
if server_settings["socket"]:
3094
server_settings["socket"] = server_config.getint("DEFAULT",
3095
"socket")
3096
# Later, stdin will, and stdout and stderr might, be dup'ed
3097
# over with an opened os.devnull. But we don't want this to
3098
# happen with a supplied network socket.
3099
while 0 <= server_settings["socket"] <= 2:
3100
server_settings["socket"] = os.dup(server_settings
3101
["socket"])
1819
3102
del server_config
1820
3103
1821
3104
# Override the settings from the config file with command line
1822
3105
# options, if set.
1823
3106
for option in ("interface", "address", "port", "debug",
1824
"priority", "servicename", "configdir",
1825
"use_dbus", "use_ipv6", "debuglevel"):
3107
"priority", "servicename", "configdir", "use_dbus",
3108
"use_ipv6", "debuglevel", "restore", "statedir",
3109
"socket", "foreground", "zeroconf"):
1826
3110
value = getattr(options, option)
1827
3111
if value is not None:
1828
3112
server_settings[option] = value
1829
3113
del options
1830
3114
# Force all strings to be unicode
1831
3115
for option in server_settings.keys():
1832
if type(server_settings[option]) is str:
1833
server_settings[option] = unicode(server_settings[option])
3116
if isinstance(server_settings[option], bytes):
3117
server_settings[option] = (server_settings[option]
3118
.decode("utf-8"))
3119
# Force all boolean options to be boolean
3120
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3121
"foreground", "zeroconf"):
3122
server_settings[option] = bool(server_settings[option])
3123
# Debug implies foreground
3124
if server_settings["debug"]:
3125
server_settings["foreground"] = True
1834
3126
# Now we have our good server settings in "server_settings"
1835
3127
1836
3128
##################################################################
1837
3129
3130
if (not server_settings["zeroconf"]
3131
and not (server_settings["port"]
3132
or server_settings["socket"] != "")):
3133
parser.error("Needs port or socket to work without Zeroconf")
3134
1838
3135
# For convenience
1839
3136
debug = server_settings["debug"]
1840
3137
debuglevel = server_settings["debuglevel"]
1841
3138
use_dbus = server_settings["use_dbus"]
1842
3139
use_ipv6 = server_settings["use_ipv6"]
3140
stored_state_path = os.path.join(server_settings["statedir"],
3141
stored_state_file)
3142
foreground = server_settings["foreground"]
3143
zeroconf = server_settings["zeroconf"]
3144
3145
if debug:
3146
initlogger(debug, logging.DEBUG)
3147
else:
3148
if not debuglevel:
3149
initlogger(debug)
3150
else:
3151
level = getattr(logging, debuglevel.upper())
3152
initlogger(debug, level)
1843
3153
1844
3154
if server_settings["servicename"] != "Mandos":
1845
syslogger.setFormatter(logging.Formatter
1846
('Mandos (%s) [%%(process)d]:'
1847
' %%(levelname)s: %%(message)s'
1848
% server_settings["servicename"]))
1849
3155
syslogger.setFormatter(
3156
logging.Formatter("Mandos ({}) [%(process)d]:"
3157
" %(levelname)s: %(message)s".format(
3158
server_settings["servicename"])))
3159
1850
3160
# Parse config file with clients
1851
client_defaults = { "timeout": "5m",
1852
"extended_timeout": "15m",
1853
"interval": "2m",
1854
"checker": "fping -q -- %%(host)s",
1855
"host": "",
1856
"approval_delay": "0s",
1857
"approval_duration": "1s",
1858
}
1859
client_config = configparser.SafeConfigParser(client_defaults)
3161
client_config = configparser.ConfigParser(Client.client_defaults)
1860
3162
client_config.read(os.path.join(server_settings["configdir"],
1861
3163
"clients.conf"))
1862
3164
1863
3165
global mandos_dbus_service
1864
3166
mandos_dbus_service = None
1865
1866
tcp_server = MandosServer((server_settings["address"],
1867
server_settings["port"]),
1868
ClientHandler,
1869
interface=(server_settings["interface"]
1870
or None),
1871
use_ipv6=use_ipv6,
1872
gnutls_priority=
1873
server_settings["priority"],
1874
use_dbus=use_dbus)
1875
if not debug:
1876
pidfilename = "/var/run/mandos.pid"
1877
try:
1878
pidfile = open(pidfilename, "w")
1879
except IOError:
1880
logger.error("Could not open file %r", pidfilename)
1881
1882
try:
1883
uid = pwd.getpwnam("_mandos").pw_uid
1884
gid = pwd.getpwnam("_mandos").pw_gid
1885
except KeyError:
1886
try:
1887
uid = pwd.getpwnam("mandos").pw_uid
1888
gid = pwd.getpwnam("mandos").pw_gid
3167
3168
socketfd = None
3169
if server_settings["socket"] != "":
3170
socketfd = server_settings["socket"]
3171
tcp_server = MandosServer(
3172
(server_settings["address"], server_settings["port"]),
3173
ClientHandler,
3174
interface=(server_settings["interface"] or None),
3175
use_ipv6=use_ipv6,
3176
gnutls_priority=server_settings["priority"],
3177
use_dbus=use_dbus,
3178
socketfd=socketfd)
3179
if not foreground:
3180
pidfilename = "/run/mandos.pid"
3181
if not os.path.isdir("/run/."):
3182
pidfilename = "/var/run/mandos.pid"
3183
pidfile = None
3184
try:
3185
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3186
except IOError as e:
3187
log.error("Could not open file %r", pidfilename,
3188
exc_info=e)
3189
3190
for name, group in (("_mandos", "_mandos"),
3191
("mandos", "mandos"),
3192
("nobody", "nogroup")):
3193
try:
3194
uid = pwd.getpwnam(name).pw_uid
3195
gid = pwd.getpwnam(group).pw_gid
3196
break
1889
3197
except KeyError:
1890
try:
1891
uid = pwd.getpwnam("nobody").pw_uid
1892
gid = pwd.getpwnam("nobody").pw_gid
1893
except KeyError:
1894
uid = 65534
1895
gid = 65534
3198
continue
3199
else:
3200
uid = 65534
3201
gid = 65534
1896
3202
try:
1897
3203
os.setgid(gid)
1898
3204
os.setuid(uid)
3205
log.debug("Did setuid/setgid to %s:%s", uid, gid)
1899
3206
except OSError as error:
1900
if error[0] != errno.EPERM:
1901
raise error
1902
1903
if not debug and not debuglevel:
1904
syslogger.setLevel(logging.WARNING)
1905
console.setLevel(logging.WARNING)
1906
if debuglevel:
1907
level = getattr(logging, debuglevel.upper())
1908
syslogger.setLevel(level)
1909
console.setLevel(level)
3207
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3208
os.strerror(error.errno))
3209
if error.errno != errno.EPERM:
3210
raise
1910
3211
1911
3212
if debug:
1912
3213
# Enable all possible GnuTLS debugging
1913
3214
1914
3215
# "Use a log level over 10 to enable all debugging options."
1915
3216
# - GnuTLS manual
1916
gnutls.library.functions.gnutls_global_set_log_level(11)
1917
1918
@gnutls.library.types.gnutls_log_func
3217
gnutls.global_set_log_level(11)
3218
3219
@gnutls.log_func
1919
3220
def debug_gnutls(level, string):
1920
logger.debug("GnuTLS: %s", string[:-1])
1921
1922
(gnutls.library.functions
1923
.gnutls_global_set_log_function(debug_gnutls))
1924
3221
log.debug("GnuTLS: %s",
3222
string[:-1].decode("utf-8", errors="replace"))
3223
3224
gnutls.global_set_log_function(debug_gnutls)
3225
1925
3226
# Redirect stdin so all checkers get /dev/null
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3227
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1927
3228
os.dup2(null, sys.stdin.fileno())
1928
3229
if null > 2:
1929
3230
os.close(null)
1930
else:
1931
# No console logging
1932
logger.removeHandler(console)
1933
3231
1934
3232
# Need to fork before connecting to D-Bus
1935
if not debug:
3233
if not foreground:
1936
3234
# Close all input and output, do double fork, etc.
1937
3235
daemon()
1938
3236
3237
if gi.version_info < (3, 10, 2):
3238
# multiprocessing will use threads, so before we use GLib we
3239
# need to inform GLib that threads will be used.
3240
GLib.threads_init()
3241
1939
3242
global main_loop
1940
3243
# From the Avahi example code
1941
DBusGMainLoop(set_as_default=True )
1942
main_loop = gobject.MainLoop()
1943
bus = dbus.SystemBus()
3244
DBusGMainLoop(set_as_default=True)
3245
main_loop = GLib.MainLoop()
3246
if use_dbus or zeroconf:
3247
bus = dbus.SystemBus()
1944
3248
# End of Avahi example code
1945
3249
if use_dbus:
1946
3250
try:
1947
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1948
bus, do_not_queue=True)
1949
except dbus.exceptions.NameExistsException as e:
1950
logger.error(unicode(e) + ", disabling D-Bus")
3251
bus_name = dbus.service.BusName("se.recompile.Mandos",
3252
bus,
3253
do_not_queue=True)
3254
old_bus_name = dbus.service.BusName(
3255
"se.bsnet.fukt.Mandos", bus,
3256
do_not_queue=True)
3257
except dbus.exceptions.DBusException as e:
3258
log.error("Disabling D-Bus:", exc_info=e)
1951
3259
use_dbus = False
1952
3260
server_settings["use_dbus"] = False
1953
3261
tcp_server.use_dbus = False
1954
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1955
service = AvahiService(name = server_settings["servicename"],
1956
servicetype = "_mandos._tcp",
1957
protocol = protocol, bus = bus)
1958
if server_settings["interface"]:
1959
service.interface = (if_nametoindex
1960
(str(server_settings["interface"])))
1961
3262
if zeroconf:
3263
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3264
service = AvahiServiceToSyslog(
3265
name=server_settings["servicename"],
3266
servicetype="_mandos._tcp",
3267
protocol=protocol,
3268
bus=bus)
3269
if server_settings["interface"]:
3270
service.interface = if_nametoindex(
3271
server_settings["interface"].encode("utf-8"))
3272
1962
3273
global multiprocessing_manager
1963
3274
multiprocessing_manager = multiprocessing.Manager()
1964
3275
1965
3276
client_class = Client
1966
3277
if use_dbus:
1967
client_class = functools.partial(ClientDBus, bus = bus)
1968
def client_config_items(config, section):
1969
special_settings = {
1970
"approved_by_default":
1971
lambda: config.getboolean(section,
1972
"approved_by_default"),
1973
}
1974
for name, value in config.items(section):
3278
client_class = functools.partial(ClientDBus, bus=bus)
3279
3280
client_settings = Client.config_parser(client_config)
3281
old_client_settings = {}
3282
clients_data = {}
3283
3284
# This is used to redirect stdout and stderr for checker processes
3285
global wnull
3286
wnull = open(os.devnull, "w") # A writable /dev/null
3287
# Only used if server is running in foreground but not in debug
3288
# mode
3289
if debug or not foreground:
3290
wnull.close()
3291
3292
# Get client data and settings from last running state.
3293
if server_settings["restore"]:
3294
try:
3295
with open(stored_state_path, "rb") as stored_state:
3296
if sys.version_info.major == 2:
3297
clients_data, old_client_settings = pickle.load(
3298
stored_state)
3299
else:
3300
bytes_clients_data, bytes_old_client_settings = (
3301
pickle.load(stored_state, encoding="bytes"))
3302
# Fix bytes to strings
3303
# clients_data
3304
# .keys()
3305
clients_data = {(key.decode("utf-8")
3306
if isinstance(key, bytes)
3307
else key): value
3308
for key, value in
3309
bytes_clients_data.items()}
3310
del bytes_clients_data
3311
for key in clients_data:
3312
value = {(k.decode("utf-8")
3313
if isinstance(k, bytes) else k): v
3314
for k, v in
3315
clients_data[key].items()}
3316
clients_data[key] = value
3317
# .client_structure
3318
value["client_structure"] = [
3319
(s.decode("utf-8")
3320
if isinstance(s, bytes)
3321
else s) for s in
3322
value["client_structure"]]
3323
# .name, .host, and .checker_command
3324
for k in ("name", "host", "checker_command"):
3325
if isinstance(value[k], bytes):
3326
value[k] = value[k].decode("utf-8")
3327
if "key_id" not in value:
3328
value["key_id"] = ""
3329
elif "fingerprint" not in value:
3330
value["fingerprint"] = ""
3331
# old_client_settings
3332
# .keys()
3333
old_client_settings = {
3334
(key.decode("utf-8")
3335
if isinstance(key, bytes)
3336
else key): value
3337
for key, value in
3338
bytes_old_client_settings.items()}
3339
del bytes_old_client_settings
3340
# .host and .checker_command
3341
for value in old_client_settings.values():
3342
for attribute in ("host", "checker_command"):
3343
if isinstance(value[attribute], bytes):
3344
value[attribute] = (value[attribute]
3345
.decode("utf-8"))
3346
os.remove(stored_state_path)
3347
except IOError as e:
3348
if e.errno == errno.ENOENT:
3349
log.warning("Could not load persistent state:"
3350
" %s", os.strerror(e.errno))
3351
else:
3352
log.critical("Could not load persistent state:",
3353
exc_info=e)
3354
raise
3355
except EOFError as e:
3356
log.warning("Could not load persistent state: EOFError:",
3357
exc_info=e)
3358
3359
with PGPEngine() as pgp:
3360
for client_name, client in clients_data.items():
3361
# Skip removed clients
3362
if client_name not in client_settings:
3363
continue
3364
3365
# Decide which value to use after restoring saved state.
3366
# We have three different values: Old config file,
3367
# new config file, and saved state.
3368
# New config value takes precedence if it differs from old
3369
# config value, otherwise use saved state.
3370
for name, value in client_settings[client_name].items():
3371
try:
3372
# For each value in new config, check if it
3373
# differs from the old config value (Except for
3374
# the "secret" attribute)
3375
if (name != "secret"
3376
and (value !=
3377
old_client_settings[client_name][name])):
3378
client[name] = value
3379
except KeyError:
3380
pass
3381
3382
# Clients who has passed its expire date can still be
3383
# enabled if its last checker was successful. A Client
3384
# whose checker succeeded before we stored its state is
3385
# assumed to have successfully run all checkers during
3386
# downtime.
3387
if client["enabled"]:
3388
if datetime.datetime.utcnow() >= client["expires"]:
3389
if not client["last_checked_ok"]:
3390
log.warning("disabling client %s - Client"
3391
" never performed a successful"
3392
" checker", client_name)
3393
client["enabled"] = False
3394
elif client["last_checker_status"] != 0:
3395
log.warning("disabling client %s - Client"
3396
" last checker failed with error"
3397
" code %s", client_name,
3398
client["last_checker_status"])
3399
client["enabled"] = False
3400
else:
3401
client["expires"] = (
3402
datetime.datetime.utcnow()
3403
+ client["timeout"])
3404
log.debug("Last checker succeeded, keeping %s"
3405
" enabled", client_name)
1975
3406
try:
1976
yield (name, special_settings[name]())
1977
except KeyError:
1978
yield (name, value)
1979
1980
tcp_server.clients.update(set(
1981
client_class(name = section,
1982
config= dict(client_config_items(
1983
client_config, section)))
1984
for section in client_config.sections()))
3407
client["secret"] = pgp.decrypt(
3408
client["encrypted_secret"],
3409
client_settings[client_name]["secret"])
3410
except PGPError:
3411
# If decryption fails, we use secret from new settings
3412
log.debug("Failed to decrypt %s old secret",
3413
client_name)
3414
client["secret"] = (client_settings[client_name]
3415
["secret"])
3416
3417
# Add/remove clients based on new changes made to config
3418
for client_name in (set(old_client_settings)
3419
- set(client_settings)):
3420
del clients_data[client_name]
3421
for client_name in (set(client_settings)
3422
- set(old_client_settings)):
3423
clients_data[client_name] = client_settings[client_name]
3424
3425
# Create all client objects
3426
for client_name, client in clients_data.items():
3427
tcp_server.clients[client_name] = client_class(
3428
name=client_name,
3429
settings=client,
3430
server_settings=server_settings)
3431
1985
3432
if not tcp_server.clients:
1986
logger.warning("No clients defined")
1987
1988
if not debug:
1989
try:
1990
with pidfile:
1991
pid = os.getpid()
1992
pidfile.write(str(pid) + "\n".encode("utf-8"))
1993
del pidfile
1994
except IOError:
1995
logger.error("Could not write to file %r with PID %d",
1996
pidfilename, pid)
1997
except NameError:
1998
# "pidfile" was never created
1999
pass
3433
log.warning("No clients defined")
3434
3435
if not foreground:
3436
if pidfile is not None:
3437
pid = os.getpid()
3438
try:
3439
with pidfile:
3440
print(pid, file=pidfile)
3441
except IOError:
3442
log.error("Could not write to file %r with PID %d",
3443
pidfilename, pid)
3444
del pidfile
2000
3445
del pidfilename
2001
2002
signal.signal(signal.SIGINT, signal.SIG_IGN)
2003
2004
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2005
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2006
3446
3447
for termsig in (signal.SIGHUP, signal.SIGTERM):
3448
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3449
lambda: main_loop.quit() and False)
3450
2007
3451
if use_dbus:
2008
class MandosDBusService(dbus.service.Object):
3452
3453
@alternate_dbus_interfaces(
3454
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3455
class MandosDBusService(DBusObjectWithObjectManager):
2009
3456
"""A D-Bus proxy object"""
3457
2010
3458
def __init__(self):
2011
3459
dbus.service.Object.__init__(self, bus, "/")
2012
_interface = "se.bsnet.fukt.Mandos"
2013
3460
3461
_interface = "se.recompile.Mandos"
3462
2014
3463
@dbus.service.signal(_interface, signature="o")
2015
3464
def ClientAdded(self, objpath):
2016
3465
"D-Bus signal"
2017
3466
pass
2018
3467
2019
3468
@dbus.service.signal(_interface, signature="ss")
2020
def ClientNotFound(self, fingerprint, address):
3469
def ClientNotFound(self, key_id, address):
2021
3470
"D-Bus signal"
2022
3471
pass
2023
3472
3473
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3474
"true"})
2024
3475
@dbus.service.signal(_interface, signature="os")
2025
3476
def ClientRemoved(self, objpath, name):
2026
3477
"D-Bus signal"
2027
3478
pass
2028
3479
3480
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3481
"true"})
2029
3482
@dbus.service.method(_interface, out_signature="ao")
2030
3483
def GetAllClients(self):
2031
3484
"D-Bus method"
2032
return dbus.Array(c.dbus_object_path
2033
for c in tcp_server.clients)
2034
3485
return dbus.Array(c.dbus_object_path for c in
3486
tcp_server.clients.values())
3487
3488
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3489
"true"})
2035
3490
@dbus.service.method(_interface,
2036
3491
out_signature="a{oa{sv}}")
2037
3492
def GetAllClientsWithProperties(self):
2038
3493
"D-Bus method"
2039
3494
return dbus.Dictionary(
2040
((c.dbus_object_path, c.GetAll(""))
2041
for c in tcp_server.clients),
3495
{c.dbus_object_path: c.GetAll(
3496
"se.recompile.Mandos.Client")
3497
for c in tcp_server.clients.values()},
2042
3498
signature="oa{sv}")
2043
3499
2044
3500
@dbus.service.method(_interface, in_signature="o")
2045
3501
def RemoveClient(self, object_path):
2046
3502
"D-Bus method"
2047
for c in tcp_server.clients:
3503
for c in tcp_server.clients.values():
2048
3504
if c.dbus_object_path == object_path:
2049
tcp_server.clients.remove(c)
3505
del tcp_server.clients[c.name]
2050
3506
c.remove_from_connection()
2051
# Don't signal anything except ClientRemoved
3507
# Don't signal the disabling
2052
3508
c.disable(quiet=True)
2053
# Emit D-Bus signal
2054
self.ClientRemoved(object_path, c.name)
3509
# Emit D-Bus signal for removal
3510
self.client_removed_signal(c)
2055
3511
return
2056
3512
raise KeyError(object_path)
2057
3513
2058
3514
del _interface
2059
3515
3516
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3517
out_signature="a{oa{sa{sv}}}")
3518
def GetManagedObjects(self):
3519
"""D-Bus method"""
3520
return dbus.Dictionary(
3521
{client.dbus_object_path:
3522
dbus.Dictionary(
3523
{interface: client.GetAll(interface)
3524
for interface in
3525
client._get_all_interface_names()})
3526
for client in tcp_server.clients.values()})
3527
3528
def client_added_signal(self, client):
3529
"""Send the new standard signal and the old signal"""
3530
if use_dbus:
3531
# New standard signal
3532
self.InterfacesAdded(
3533
client.dbus_object_path,
3534
dbus.Dictionary(
3535
{interface: client.GetAll(interface)
3536
for interface in
3537
client._get_all_interface_names()}))
3538
# Old signal
3539
self.ClientAdded(client.dbus_object_path)
3540
3541
def client_removed_signal(self, client):
3542
"""Send the new standard signal and the old signal"""
3543
if use_dbus:
3544
# New standard signal
3545
self.InterfacesRemoved(
3546
client.dbus_object_path,
3547
client._get_all_interface_names())
3548
# Old signal
3549
self.ClientRemoved(client.dbus_object_path,
3550
client.name)
3551
2060
3552
mandos_dbus_service = MandosDBusService()
2061
3553
3554
# Save modules to variables to exempt the modules from being
3555
# unloaded before the function registered with atexit() is run.
3556
mp = multiprocessing
3557
wn = wnull
3558
2062
3559
def cleanup():
2063
3560
"Cleanup function; run on exit"
2064
service.cleanup()
2065
3561
if zeroconf:
3562
service.cleanup()
3563
3564
mp.active_children()
3565
wn.close()
3566
if not (tcp_server.clients or client_settings):
3567
return
3568
3569
# Store client before exiting. Secrets are encrypted with key
3570
# based on what config file has. If config file is
3571
# removed/edited, old secret will thus be unrecovable.
3572
clients = {}
3573
with PGPEngine() as pgp:
3574
for client in tcp_server.clients.values():
3575
key = client_settings[client.name]["secret"]
3576
client.encrypted_secret = pgp.encrypt(client.secret,
3577
key)
3578
client_dict = {}
3579
3580
# A list of attributes that can not be pickled
3581
# + secret.
3582
exclude = {"bus", "changedstate", "secret",
3583
"checker", "server_settings"}
3584
for name, typ in inspect.getmembers(dbus.service
3585
.Object):
3586
exclude.add(name)
3587
3588
client_dict["encrypted_secret"] = (client
3589
.encrypted_secret)
3590
for attr in client.client_structure:
3591
if attr not in exclude:
3592
client_dict[attr] = getattr(client, attr)
3593
3594
clients[client.name] = client_dict
3595
del client_settings[client.name]["secret"]
3596
3597
try:
3598
with tempfile.NamedTemporaryFile(
3599
mode="wb",
3600
suffix=".pickle",
3601
prefix="clients-",
3602
dir=os.path.dirname(stored_state_path),
3603
delete=False) as stored_state:
3604
pickle.dump((clients, client_settings), stored_state,
3605
protocol=2)
3606
tempname = stored_state.name
3607
os.rename(tempname, stored_state_path)
3608
except (IOError, OSError) as e:
3609
if not debug:
3610
try:
3611
os.remove(tempname)
3612
except NameError:
3613
pass
3614
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3615
log.warning("Could not save persistent state: %s",
3616
os.strerror(e.errno))
3617
else:
3618
log.warning("Could not save persistent state:",
3619
exc_info=e)
3620
raise
3621
3622
# Delete all clients, and settings from config
2066
3623
while tcp_server.clients:
2067
client = tcp_server.clients.pop()
3624
name, client = tcp_server.clients.popitem()
2068
3625
if use_dbus:
2069
3626
client.remove_from_connection()
2070
client.disable_hook = None
2071
# Don't signal anything except ClientRemoved
3627
# Don't signal the disabling
2072
3628
client.disable(quiet=True)
3629
# Emit D-Bus signal for removal
2073
3630
if use_dbus:
2074
# Emit D-Bus signal
2075
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2076
client.name)
2077
3631
mandos_dbus_service.client_removed_signal(client)
3632
client_settings.clear()
3633
2078
3634
atexit.register(cleanup)
2079
2080
for client in tcp_server.clients:
3635
3636
for client in tcp_server.clients.values():
2081
3637
if use_dbus:
2082
# Emit D-Bus signal
2083
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2084
client.enable()
2085
3638
# Emit D-Bus signal for adding
3639
mandos_dbus_service.client_added_signal(client)
3640
# Need to initiate checking of clients
3641
if client.enabled:
3642
client.init_checker(randomize_start=True)
3643
2086
3644
tcp_server.enable()
2087
3645
tcp_server.server_activate()
2088
3646
2089
3647
# Find out what port we got
2090
service.port = tcp_server.socket.getsockname()[1]
3648
if zeroconf:
3649
service.port = tcp_server.socket.getsockname()[1]
2091
3650
if use_ipv6:
2092
logger.info("Now listening on address %r, port %d,"
2093
" flowinfo %d, scope_id %d"
2094
% tcp_server.socket.getsockname())
3651
log.info("Now listening on address %r, port %d, flowinfo %d,"
3652
" scope_id %d", *tcp_server.socket.getsockname())
2095
3653
else: # IPv4
2096
logger.info("Now listening on address %r, port %d"
2097
% tcp_server.socket.getsockname())
2098
2099
#service.interface = tcp_server.socket.getsockname()[3]
2100
3654
log.info("Now listening on address %r, port %d",
3655
*tcp_server.socket.getsockname())
3656
3657
# service.interface = tcp_server.socket.getsockname()[3]
3658
2101
3659
try:
2102
# From the Avahi example code
2103
try:
2104
service.activate()
2105
except dbus.exceptions.DBusException as error:
2106
logger.critical("DBusException: %s", error)
2107
cleanup()
2108
sys.exit(1)
2109
# End of Avahi example code
2110
2111
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2112
lambda *args, **kwargs:
2113
(tcp_server.handle_request
2114
(*args[2:], **kwargs) or True))
2115
2116
logger.debug("Starting main loop")
3660
if zeroconf:
3661
# From the Avahi example code
3662
try:
3663
service.activate()
3664
except dbus.exceptions.DBusException as error:
3665
log.critical("D-Bus Exception", exc_info=error)
3666
cleanup()
3667
sys.exit(1)
3668
# End of Avahi example code
3669
3670
GLib.io_add_watch(
3671
GLib.IOChannel.unix_new(tcp_server.fileno()),
3672
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3673
lambda *args, **kwargs: (tcp_server.handle_request
3674
(*args[2:], **kwargs) or True))
3675
3676
log.debug("Starting main loop")
2117
3677
main_loop.run()
2118
3678
except AvahiError as error:
2119
logger.critical("AvahiError: %s", error)
3679
log.critical("Avahi Error", exc_info=error)
2120
3680
cleanup()
2121
3681
sys.exit(1)
2122
3682
except KeyboardInterrupt:
2123
3683
if debug:
2124
3684
print("", file=sys.stderr)
2125
logger.debug("Server received KeyboardInterrupt")
2126
logger.debug("Server exiting")
3685
log.debug("Server received KeyboardInterrupt")
3686
log.debug("Server exiting")
2127
3687
# Must run before the D-Bus bus name gets deregistered
2128
3688
cleanup()
2129
3689
2130
if __name__ == '__main__':
2131
main()
3690
3691
def parse_test_args():
3692
# type: () -> argparse.Namespace
3693
parser = argparse.ArgumentParser(add_help=False)
3694
parser.add_argument("--check", action="store_true")
3695
parser.add_argument("--prefix", )
3696
args, unknown_args = parser.parse_known_args()
3697
if args.check:
3698
# Remove test options from sys.argv
3699
sys.argv[1:] = unknown_args
3700
return args
3701
3702
# Add all tests from doctest strings
3703
def load_tests(loader, tests, none):
3704
import doctest
3705
tests.addTests(doctest.DocTestSuite())
3706
return tests
3707
3708
if __name__ == "__main__":
3709
options = parse_test_args()
3710
try:
3711
if options.check:
3712
extra_test_prefix = options.prefix
3713
if extra_test_prefix is not None:
3714
if not (unittest.main(argv=[""], exit=False)
3715
.result.wasSuccessful()):
3716
sys.exit(1)
3717
class ExtraTestLoader(unittest.TestLoader):
3718
testMethodPrefix = extra_test_prefix
3719
# Call using ./scriptname --test [--verbose]
3720
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3721
else:
3722
unittest.main(argv=[""])
3723
else:
3724
main()
3725
finally:
3726
logging.shutdown()
3727
3728
# Local Variables:
3729
# run-tests:
3730
# (lambda (&optional extra)
3731
# (if (not (funcall run-tests-in-test-buffer default-directory
3732
# extra))
3733
# (funcall show-test-buffer-in-test-window)
3734
# (funcall remove-test-window)
3735
# (if extra (message "Extra tests run successfully!"))))
3736
# run-tests-in-test-buffer:
3737
# (lambda (dir &optional extra)
3738
# (with-current-buffer (get-buffer-create "*Test*")
3739
# (setq buffer-read-only nil
3740
# default-directory dir)
3741
# (erase-buffer)
3742
# (compilation-mode))
3743
# (let ((process-result
3744
# (let ((inhibit-read-only t))
3745
# (process-file-shell-command
3746
# (funcall get-command-line extra) nil "*Test*"))))
3747
# (and (numberp process-result)
3748
# (= process-result 0))))
3749
# get-command-line:
3750
# (lambda (&optional extra)
3751
# (let ((quoted-script
3752
# (shell-quote-argument (funcall get-script-name))))
3753
# (format
3754
# (concat "%s --check" (if extra " --prefix=atest" ""))
3755
# quoted-script)))
3756
# get-script-name:
3757
# (lambda ()
3758
# (if (fboundp 'file-local-name)
3759
# (file-local-name (buffer-file-name))
3760
# (or (file-remote-p (buffer-file-name) 'localname)
3761
# (buffer-file-name))))
3762
# remove-test-window:
3763
# (lambda ()
3764
# (let ((test-window (get-buffer-window "*Test*")))
3765
# (if test-window (delete-window test-window))))
3766
# show-test-buffer-in-test-window:
3767
# (lambda ()
3768
# (when (not (get-buffer-window-list "*Test*"))
3769
# (setq next-error-last-buffer (get-buffer "*Test*"))
3770
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3771
# (display-buffer-overriding-action
3772
# `((display-buffer-in-side-window) (side . ,side)
3773
# (window-height . fit-window-to-buffer)
3774
# (window-width . fit-window-to-buffer))))
3775
# (display-buffer "*Test*"))))
3776
# eval:
3777
# (progn
3778
# (let* ((run-extra-tests (lambda () (interactive)
3779
# (funcall run-tests t)))
3780
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3781
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3782
# (setq minor-mode-overriding-map-alist
3783
# (cons `(run-tests . ,outer-keymap)
3784
# minor-mode-overriding-map-alist)))
3785
# (add-hook 'after-save-hook run-tests 90 t))
3786
# End:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0