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- Committer: Teddy Hogeborn
- Date: 2025-06-27 19:56:23 UTC
- mto: This revision was merged to the branch mainline in revision 414.
- Revision ID: teddy@recompile.se-20250627195623-02t2vap0gixox3mo
Update Debian Policy version to 4.7.2; no other changes necessary.
* debian/control (Standards-Version): Change to "4.7.2".
* debian/control (Standards-Version): Change to "4.7.2".
- files added:
- bugs.xml
- debian/source
- 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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 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 © 2008-2024 Teddy Hogeborn
15
# Copyright © 2008-2024 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
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
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
37
51
import socket
38
import optparse
39
52
import datetime
40
53
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
48
import sys
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
49
58
import re
50
import os
51
59
import signal
52
60
import subprocess
53
61
import atexit
54
62
import stat
55
import logging
56
63
import logging.handlers
57
64
import pwd
58
65
import contextlib
59
66
import struct
60
67
import fcntl
61
68
import functools
62
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
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
64
82
65
83
import dbus
66
84
import dbus.service
67
import gobject
68
import avahi
85
import gi
86
from gi.repository import GLib
69
87
from dbus.mainloop.glib import DBusGMainLoop
70
88
import ctypes
71
89
import ctypes.util
72
90
import xml.dom.minidom
73
91
import inspect
74
92
75
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
# Add os.set_inheritable if it does not exist
114
try:
115
os.set_inheritable
116
except AttributeError:
117
def set_inheritable(fd, inheritable):
118
flags = fcntl.fcntl(fd, fcntl.F_GETFD)
119
if inheritable and ((flags & fcntl.FD_CLOEXEC) != 0):
120
fcntl.fcntl(fd, fcntl.F_SETFL, flags & ~fcntl.FD_CLOEXEC)
121
elif (not inheritable) and ((flags & fcntl.FD_CLOEXEC) == 0):
122
fcntl.fcntl(fd, fcntl.F_SETFL, flags | fcntl.FD_CLOEXEC)
123
os.set_inheritable = set_inheritable
124
del set_inheritable
125
126
# Show warnings by default
127
if not sys.warnoptions:
128
import warnings
129
warnings.simplefilter("default")
130
131
# Try to find the value of SO_BINDTODEVICE:
132
try:
133
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
134
# newer, and it is also the most natural place for it:
76
135
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
136
except AttributeError:
78
137
try:
138
# This is where SO_BINDTODEVICE was up to and including Python
139
# 2.6, and also 3.2:
79
140
from IN import SO_BINDTODEVICE
80
141
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
142
# In Python 2.7 it seems to have been removed entirely.
143
# Try running the C preprocessor:
144
try:
145
cc = subprocess.Popen(["cc", "--language=c", "-E",
146
"/dev/stdin"],
147
stdin=subprocess.PIPE,
148
stdout=subprocess.PIPE)
149
stdout = cc.communicate(
150
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
151
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
152
except (OSError, ValueError, IndexError):
153
# No value found
154
SO_BINDTODEVICE = None
155
156
if sys.version_info < (3, 2):
157
configparser.Configparser = configparser.SafeConfigParser
158
159
version = "1.8.18"
160
stored_state_file = "clients.pickle"
161
162
log = logging.getLogger(os.path.basename(sys.argv[0]))
163
logging.captureWarnings(True) # Show warnings via the logging system
164
syslogger = None
165
166
try:
167
if_nametoindex = ctypes.cdll.LoadLibrary(
168
ctypes.util.find_library("c")).if_nametoindex
169
except (OSError, AttributeError):
170
171
def if_nametoindex(interface):
172
"Get an interface index the hard way, i.e. using fcntl()"
173
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
174
with contextlib.closing(socket.socket()) as s:
175
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
176
struct.pack(b"16s16x", interface))
177
interface_index = struct.unpack("I", ifreq[16:20])[0]
178
return interface_index
179
180
181
def copy_function(func):
182
"""Make a copy of a function"""
183
if sys.version_info.major == 2:
184
return types.FunctionType(func.func_code,
185
func.func_globals,
186
func.func_name,
187
func.func_defaults,
188
func.func_closure)
189
else:
190
return types.FunctionType(func.__code__,
191
func.__globals__,
192
func.__name__,
193
func.__defaults__,
194
func.__closure__)
195
196
197
def initlogger(debug, level=logging.WARNING):
198
"""init logger and add loglevel"""
199
200
global syslogger
201
syslogger = (logging.handlers.SysLogHandler(
202
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
203
address="/dev/log"))
204
syslogger.setFormatter(logging.Formatter
205
("Mandos [%(process)d]: %(levelname)s:"
206
" %(message)s"))
207
log.addHandler(syslogger)
208
209
if debug:
210
console = logging.StreamHandler()
211
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
212
" [%(process)d]:"
213
" %(levelname)s:"
214
" %(message)s"))
215
log.addHandler(console)
216
log.setLevel(level)
217
218
219
class PGPError(Exception):
220
"""Exception if encryption/decryption fails"""
221
pass
222
223
224
class PGPEngine:
225
"""A simple class for OpenPGP symmetric encryption & decryption"""
226
227
def __init__(self):
228
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
229
self.gpg = "gpg"
230
try:
231
output = subprocess.check_output(["gpgconf"])
232
for line in output.splitlines():
233
name, text, path = line.split(b":")
234
if name == b"gpg":
235
self.gpg = path
236
break
237
except OSError as e:
238
if e.errno != errno.ENOENT:
239
raise
240
self.gnupgargs = ["--batch",
241
"--homedir", self.tempdir,
242
"--force-mdc",
243
"--quiet"]
244
# Only GPG version 1 has the --no-use-agent option.
245
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
246
self.gnupgargs.append("--no-use-agent")
247
248
def __enter__(self):
249
return self
250
251
def __exit__(self, exc_type, exc_value, traceback):
252
self._cleanup()
253
return False
254
255
def __del__(self):
256
self._cleanup()
257
258
def _cleanup(self):
259
if self.tempdir is not None:
260
# Delete contents of tempdir
261
for root, dirs, files in os.walk(self.tempdir,
262
topdown=False):
263
for filename in files:
264
os.remove(os.path.join(root, filename))
265
for dirname in dirs:
266
os.rmdir(os.path.join(root, dirname))
267
# Remove tempdir
268
os.rmdir(self.tempdir)
269
self.tempdir = None
270
271
def password_encode(self, password):
272
# Passphrase can not be empty and can not contain newlines or
273
# NUL bytes. So we prefix it and hex encode it.
274
encoded = b"mandos" + binascii.hexlify(password)
275
if len(encoded) > 2048:
276
# GnuPG can't handle long passwords, so encode differently
277
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
278
.replace(b"\n", b"\\n")
279
.replace(b"\0", b"\\x00"))
280
return encoded
281
282
def encrypt(self, data, password):
283
passphrase = self.password_encode(password)
284
with tempfile.NamedTemporaryFile(
285
dir=self.tempdir) as passfile:
286
passfile.write(passphrase)
287
passfile.flush()
288
proc = subprocess.Popen([self.gpg, "--symmetric",
289
"--passphrase-file",
290
passfile.name]
291
+ self.gnupgargs,
292
stdin=subprocess.PIPE,
293
stdout=subprocess.PIPE,
294
stderr=subprocess.PIPE)
295
ciphertext, err = proc.communicate(input=data)
296
if proc.returncode != 0:
297
raise PGPError(err)
298
return ciphertext
299
300
def decrypt(self, data, password):
301
passphrase = self.password_encode(password)
302
with tempfile.NamedTemporaryFile(
303
dir=self.tempdir) as passfile:
304
passfile.write(passphrase)
305
passfile.flush()
306
proc = subprocess.Popen([self.gpg, "--decrypt",
307
"--passphrase-file",
308
passfile.name]
309
+ self.gnupgargs,
310
stdin=subprocess.PIPE,
311
stdout=subprocess.PIPE,
312
stderr=subprocess.PIPE)
313
decrypted_plaintext, err = proc.communicate(input=data)
314
if proc.returncode != 0:
315
raise PGPError(err)
316
return decrypted_plaintext
317
318
319
# Pretend that we have an Avahi module
320
class avahi:
321
"""This isn't so much a class as it is a module-like namespace."""
322
IF_UNSPEC = -1 # avahi-common/address.h
323
PROTO_UNSPEC = -1 # avahi-common/address.h
324
PROTO_INET = 0 # avahi-common/address.h
325
PROTO_INET6 = 1 # avahi-common/address.h
326
DBUS_NAME = "org.freedesktop.Avahi"
327
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
328
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
329
DBUS_PATH_SERVER = "/"
330
331
@staticmethod
332
def string_array_to_txt_array(t):
333
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
334
for s in t), signature="ay")
335
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
336
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
337
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
338
SERVER_INVALID = 0 # avahi-common/defs.h
339
SERVER_REGISTERING = 1 # avahi-common/defs.h
340
SERVER_RUNNING = 2 # avahi-common/defs.h
341
SERVER_COLLISION = 3 # avahi-common/defs.h
342
SERVER_FAILURE = 4 # avahi-common/defs.h
343
101
344
102
345
class AvahiError(Exception):
103
346
def __init__(self, value, *args, **kwargs):
104
347
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
348
return super(AvahiError, self).__init__(value, *args,
349
**kwargs)
350
108
351
109
352
class AvahiServiceError(AvahiError):
110
353
pass
111
354
355
112
356
class AvahiGroupError(AvahiError):
113
357
pass
114
358
115
359
116
class AvahiService(object):
360
class AvahiService:
117
361
"""An Avahi (Zeroconf) service.
118
362
119
363
Attributes:
120
364
interface: integer; avahi.IF_UNSPEC or an interface index.
121
365
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
366
name: string; Example: "Mandos"
367
type: string; Example: "_mandos._tcp".
368
See <https://www.iana.org/assignments/service-names-port-numbers>
125
369
port: integer; what port to announce
126
370
TXT: list of strings; TXT record for the service
127
371
domain: string; Domain to publish on, default to .local if empty.
133
377
server: D-Bus Server
134
378
bus: dbus.SystemBus()
135
379
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
380
381
def __init__(self,
382
interface=avahi.IF_UNSPEC,
383
name=None,
384
servicetype=None,
385
port=None,
386
TXT=None,
387
domain="",
388
host="",
389
max_renames=32768,
390
protocol=avahi.PROTO_UNSPEC,
391
bus=None):
140
392
self.interface = interface
141
393
self.name = name
142
394
self.type = servicetype
150
402
self.group = None # our entry group
151
403
self.server = None
152
404
self.bus = bus
153
def rename(self):
405
self.entry_group_state_changed_match = None
406
407
def rename(self, remove=True):
154
408
"""Derived from the Avahi example code"""
155
409
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
158
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
410
log.critical("No suitable Zeroconf service name found"
411
" after %i retries, exiting.",
412
self.rename_count)
413
raise AvahiServiceError("Too many renames")
414
self.name = str(
415
self.server.GetAlternativeServiceName(self.name))
174
416
self.rename_count += 1
417
log.info("Changing Zeroconf service name to %r ...",
418
self.name)
419
if remove:
420
self.remove()
421
try:
422
self.add()
423
except dbus.exceptions.DBusException as error:
424
if (error.get_dbus_name()
425
== "org.freedesktop.Avahi.CollisionError"):
426
log.info("Local Zeroconf service name collision.")
427
return self.rename(remove=False)
428
else:
429
log.critical("D-Bus Exception", exc_info=error)
430
self.cleanup()
431
os._exit(1)
432
175
433
def remove(self):
176
434
"""Derived from the Avahi example code"""
435
if self.entry_group_state_changed_match is not None:
436
self.entry_group_state_changed_match.remove()
437
self.entry_group_state_changed_match = None
177
438
if self.group is not None:
178
439
self.group.Reset()
440
179
441
def add(self):
180
442
"""Derived from the Avahi example code"""
443
self.remove()
181
444
if self.group is None:
182
445
self.group = dbus.Interface(
183
446
self.bus.get_object(avahi.DBUS_NAME,
184
447
self.server.EntryGroupNew()),
185
448
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
190
self.name, self.type)
449
self.entry_group_state_changed_match = (
450
self.group.connect_to_signal(
451
"StateChanged", self.entry_group_state_changed))
452
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
453
self.name, self.type)
191
454
self.group.AddService(
192
455
self.interface,
193
456
self.protocol,
197
460
dbus.UInt16(self.port),
198
461
avahi.string_array_to_txt_array(self.TXT))
199
462
self.group.Commit()
463
200
464
def entry_group_state_changed(self, state, error):
201
465
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
466
log.debug("Avahi entry group state change: %i", state)
467
204
468
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
469
log.debug("Zeroconf service established.")
206
470
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
471
log.info("Zeroconf service name collision.")
208
472
self.rename()
209
473
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
474
log.critical("Avahi: Error in group state changed %s",
475
str(error))
476
raise AvahiGroupError("State changed: {!s}".format(error))
477
214
478
def cleanup(self):
215
479
"""Derived from the Avahi example code"""
216
480
if self.group is not None:
217
self.group.Free()
481
try:
482
self.group.Free()
483
except (dbus.exceptions.UnknownMethodException,
484
dbus.exceptions.DBusException):
485
pass
218
486
self.group = None
219
def server_state_changed(self, state):
487
self.remove()
488
489
def server_state_changed(self, state, error=None):
220
490
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
491
log.debug("Avahi server state change: %i", state)
492
bad_states = {
493
avahi.SERVER_INVALID: "Zeroconf server invalid",
494
avahi.SERVER_REGISTERING: None,
495
avahi.SERVER_COLLISION: "Zeroconf server name collision",
496
avahi.SERVER_FAILURE: "Zeroconf server failure",
497
}
498
if state in bad_states:
499
if bad_states[state] is not None:
500
if error is None:
501
log.error(bad_states[state])
502
else:
503
log.error(bad_states[state] + ": %r", error)
504
self.cleanup()
225
505
elif state == avahi.SERVER_RUNNING:
226
self.add()
506
try:
507
self.add()
508
except dbus.exceptions.DBusException as error:
509
if (error.get_dbus_name()
510
== "org.freedesktop.Avahi.CollisionError"):
511
log.info("Local Zeroconf service name collision.")
512
return self.rename(remove=False)
513
else:
514
log.critical("D-Bus Exception", exc_info=error)
515
self.cleanup()
516
os._exit(1)
517
else:
518
if error is None:
519
log.debug("Unknown state: %r", state)
520
else:
521
log.debug("Unknown state: %r: %r", state, error)
522
227
523
def activate(self):
228
524
"""Derived from the Avahi example code"""
229
525
if self.server is None:
230
526
self.server = dbus.Interface(
231
527
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
528
avahi.DBUS_PATH_SERVER,
529
follow_name_owner_changes=True),
233
530
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
531
self.server.connect_to_signal("StateChanged",
532
self.server_state_changed)
236
533
self.server_state_changed(self.server.GetState())
237
534
238
535
239
class Client(object):
536
class AvahiServiceToSyslog(AvahiService):
537
def rename(self, *args, **kwargs):
538
"""Add the new name to the syslog messages"""
539
ret = super(AvahiServiceToSyslog, self).rename(*args,
540
**kwargs)
541
syslogger.setFormatter(logging.Formatter(
542
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
543
.format(self.name)))
544
return ret
545
546
547
# Pretend that we have a GnuTLS module
548
class gnutls:
549
"""This isn't so much a class as it is a module-like namespace."""
550
551
library = ctypes.util.find_library("gnutls")
552
if library is None:
553
library = ctypes.util.find_library("gnutls-deb0")
554
_library = ctypes.cdll.LoadLibrary(library)
555
del library
556
557
# Unless otherwise indicated, the constants and types below are
558
# all from the gnutls/gnutls.h C header file.
559
560
# Constants
561
E_SUCCESS = 0
562
E_INTERRUPTED = -52
563
E_AGAIN = -28
564
CRT_OPENPGP = 2
565
CRT_RAWPK = 3
566
CLIENT = 2
567
SHUT_RDWR = 0
568
CRD_CERTIFICATE = 1
569
E_NO_CERTIFICATE_FOUND = -49
570
X509_FMT_DER = 0
571
NO_TICKETS = 1<<10
572
ENABLE_RAWPK = 1<<18
573
CTYPE_PEERS = 3
574
KEYID_USE_SHA256 = 1 # gnutls/x509.h
575
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
576
577
# Types
578
class _session_int(ctypes.Structure):
579
_fields_ = []
580
session_t = ctypes.POINTER(_session_int)
581
582
class certificate_credentials_st(ctypes.Structure):
583
_fields_ = []
584
certificate_credentials_t = ctypes.POINTER(
585
certificate_credentials_st)
586
certificate_type_t = ctypes.c_int
587
588
class datum_t(ctypes.Structure):
589
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
590
("size", ctypes.c_uint)]
591
592
class _openpgp_crt_int(ctypes.Structure):
593
_fields_ = []
594
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
595
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
596
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
597
credentials_type_t = ctypes.c_int
598
transport_ptr_t = ctypes.c_void_p
599
close_request_t = ctypes.c_int
600
601
# Exceptions
602
class Error(Exception):
603
def __init__(self, message=None, code=None, args=()):
604
# Default usage is by a message string, but if a return
605
# code is passed, convert it to a string with
606
# gnutls.strerror()
607
self.code = code
608
if message is None and code is not None:
609
message = gnutls.strerror(code).decode(
610
"utf-8", errors="replace")
611
return super(gnutls.Error, self).__init__(
612
message, *args)
613
614
class CertificateSecurityError(Error):
615
pass
616
617
class PointerTo:
618
def __init__(self, cls):
619
self.cls = cls
620
621
def from_param(self, obj):
622
if not isinstance(obj, self.cls):
623
raise TypeError("Not of type {}: {!r}"
624
.format(self.cls.__name__, obj))
625
return ctypes.byref(obj.from_param(obj))
626
627
class CastToVoidPointer:
628
def __init__(self, cls):
629
self.cls = cls
630
631
def from_param(self, obj):
632
if not isinstance(obj, self.cls):
633
raise TypeError("Not of type {}: {!r}"
634
.format(self.cls.__name__, obj))
635
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
636
637
class With_from_param:
638
@classmethod
639
def from_param(cls, obj):
640
return obj._as_parameter_
641
642
# Classes
643
class Credentials(With_from_param):
644
def __init__(self):
645
self._as_parameter_ = gnutls.certificate_credentials_t()
646
gnutls.certificate_allocate_credentials(self)
647
self.type = gnutls.CRD_CERTIFICATE
648
649
def __del__(self):
650
gnutls.certificate_free_credentials(self)
651
652
class ClientSession(With_from_param):
653
def __init__(self, socket, credentials=None):
654
self._as_parameter_ = gnutls.session_t()
655
gnutls_flags = gnutls.CLIENT
656
if gnutls.check_version(b"3.5.6"):
657
gnutls_flags |= gnutls.NO_TICKETS
658
if gnutls.has_rawpk:
659
gnutls_flags |= gnutls.ENABLE_RAWPK
660
gnutls.init(self, gnutls_flags)
661
del gnutls_flags
662
gnutls.set_default_priority(self)
663
gnutls.transport_set_ptr(self, socket.fileno())
664
gnutls.handshake_set_private_extensions(self, True)
665
self.socket = socket
666
if credentials is None:
667
credentials = gnutls.Credentials()
668
gnutls.credentials_set(self, credentials.type,
669
credentials)
670
self.credentials = credentials
671
672
def __del__(self):
673
gnutls.deinit(self)
674
675
def handshake(self):
676
return gnutls.handshake(self)
677
678
def send(self, data):
679
data = bytes(data)
680
data_len = len(data)
681
while data_len > 0:
682
data_len -= gnutls.record_send(self, data[-data_len:],
683
data_len)
684
685
def bye(self):
686
return gnutls.bye(self, gnutls.SHUT_RDWR)
687
688
# Error handling functions
689
def _error_code(result):
690
"""A function to raise exceptions on errors, suitable
691
for the "restype" attribute on ctypes functions"""
692
if result >= gnutls.E_SUCCESS:
693
return result
694
if result == gnutls.E_NO_CERTIFICATE_FOUND:
695
raise gnutls.CertificateSecurityError(code=result)
696
raise gnutls.Error(code=result)
697
698
def _retry_on_error(result, func, arguments,
699
_error_code=_error_code):
700
"""A function to retry on some errors, suitable
701
for the "errcheck" attribute on ctypes functions"""
702
while result < gnutls.E_SUCCESS:
703
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
704
return _error_code(result)
705
result = func(*arguments)
706
return result
707
708
# Unless otherwise indicated, the function declarations below are
709
# all from the gnutls/gnutls.h C header file.
710
711
# Functions
712
priority_set_direct = _library.gnutls_priority_set_direct
713
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
714
ctypes.POINTER(ctypes.c_char_p)]
715
priority_set_direct.restype = _error_code
716
717
init = _library.gnutls_init
718
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
719
init.restype = _error_code
720
721
set_default_priority = _library.gnutls_set_default_priority
722
set_default_priority.argtypes = [ClientSession]
723
set_default_priority.restype = _error_code
724
725
record_send = _library.gnutls_record_send
726
record_send.argtypes = [ClientSession, ctypes.c_void_p,
727
ctypes.c_size_t]
728
record_send.restype = ctypes.c_ssize_t
729
record_send.errcheck = _retry_on_error
730
731
certificate_allocate_credentials = (
732
_library.gnutls_certificate_allocate_credentials)
733
certificate_allocate_credentials.argtypes = [
734
PointerTo(Credentials)]
735
certificate_allocate_credentials.restype = _error_code
736
737
certificate_free_credentials = (
738
_library.gnutls_certificate_free_credentials)
739
certificate_free_credentials.argtypes = [Credentials]
740
certificate_free_credentials.restype = None
741
742
handshake_set_private_extensions = (
743
_library.gnutls_handshake_set_private_extensions)
744
handshake_set_private_extensions.argtypes = [ClientSession,
745
ctypes.c_int]
746
handshake_set_private_extensions.restype = None
747
748
credentials_set = _library.gnutls_credentials_set
749
credentials_set.argtypes = [ClientSession, credentials_type_t,
750
CastToVoidPointer(Credentials)]
751
credentials_set.restype = _error_code
752
753
strerror = _library.gnutls_strerror
754
strerror.argtypes = [ctypes.c_int]
755
strerror.restype = ctypes.c_char_p
756
757
certificate_type_get = _library.gnutls_certificate_type_get
758
certificate_type_get.argtypes = [ClientSession]
759
certificate_type_get.restype = _error_code
760
761
certificate_get_peers = _library.gnutls_certificate_get_peers
762
certificate_get_peers.argtypes = [ClientSession,
763
ctypes.POINTER(ctypes.c_uint)]
764
certificate_get_peers.restype = ctypes.POINTER(datum_t)
765
766
global_set_log_level = _library.gnutls_global_set_log_level
767
global_set_log_level.argtypes = [ctypes.c_int]
768
global_set_log_level.restype = None
769
770
global_set_log_function = _library.gnutls_global_set_log_function
771
global_set_log_function.argtypes = [log_func]
772
global_set_log_function.restype = None
773
774
deinit = _library.gnutls_deinit
775
deinit.argtypes = [ClientSession]
776
deinit.restype = None
777
778
handshake = _library.gnutls_handshake
779
handshake.argtypes = [ClientSession]
780
handshake.restype = ctypes.c_int
781
handshake.errcheck = _retry_on_error
782
783
transport_set_ptr = _library.gnutls_transport_set_ptr
784
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
785
transport_set_ptr.restype = None
786
787
bye = _library.gnutls_bye
788
bye.argtypes = [ClientSession, close_request_t]
789
bye.restype = ctypes.c_int
790
bye.errcheck = _retry_on_error
791
792
check_version = _library.gnutls_check_version
793
check_version.argtypes = [ctypes.c_char_p]
794
check_version.restype = ctypes.c_char_p
795
796
_need_version = b"3.3.0"
797
if check_version(_need_version) is None:
798
raise self.Error("Needs GnuTLS {} or later"
799
.format(_need_version))
800
801
_tls_rawpk_version = b"3.6.6"
802
has_rawpk = bool(check_version(_tls_rawpk_version))
803
804
if has_rawpk:
805
# Types
806
class pubkey_st(ctypes.Structure):
807
_fields = []
808
pubkey_t = ctypes.POINTER(pubkey_st)
809
810
x509_crt_fmt_t = ctypes.c_int
811
812
# All the function declarations below are from
813
# gnutls/abstract.h
814
pubkey_init = _library.gnutls_pubkey_init
815
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
816
pubkey_init.restype = _error_code
817
818
pubkey_import = _library.gnutls_pubkey_import
819
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
820
x509_crt_fmt_t]
821
pubkey_import.restype = _error_code
822
823
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
824
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
825
ctypes.POINTER(ctypes.c_ubyte),
826
ctypes.POINTER(ctypes.c_size_t)]
827
pubkey_get_key_id.restype = _error_code
828
829
pubkey_deinit = _library.gnutls_pubkey_deinit
830
pubkey_deinit.argtypes = [pubkey_t]
831
pubkey_deinit.restype = None
832
else:
833
# All the function declarations below are from
834
# gnutls/openpgp.h
835
836
openpgp_crt_init = _library.gnutls_openpgp_crt_init
837
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
838
openpgp_crt_init.restype = _error_code
839
840
openpgp_crt_import = _library.gnutls_openpgp_crt_import
841
openpgp_crt_import.argtypes = [openpgp_crt_t,
842
ctypes.POINTER(datum_t),
843
openpgp_crt_fmt_t]
844
openpgp_crt_import.restype = _error_code
845
846
openpgp_crt_verify_self = \
847
_library.gnutls_openpgp_crt_verify_self
848
openpgp_crt_verify_self.argtypes = [
849
openpgp_crt_t,
850
ctypes.c_uint,
851
ctypes.POINTER(ctypes.c_uint),
852
]
853
openpgp_crt_verify_self.restype = _error_code
854
855
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
856
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
857
openpgp_crt_deinit.restype = None
858
859
openpgp_crt_get_fingerprint = (
860
_library.gnutls_openpgp_crt_get_fingerprint)
861
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
862
ctypes.c_void_p,
863
ctypes.POINTER(
864
ctypes.c_size_t)]
865
openpgp_crt_get_fingerprint.restype = _error_code
866
867
if check_version(b"3.6.4"):
868
certificate_type_get2 = _library.gnutls_certificate_type_get2
869
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
870
certificate_type_get2.restype = _error_code
871
872
# Remove non-public functions
873
del _error_code, _retry_on_error
874
875
876
def call_pipe(connection, # : multiprocessing.Connection
877
func, *args, **kwargs):
878
"""This function is meant to be called by multiprocessing.Process
879
880
This function runs func(*args, **kwargs), and writes the resulting
881
return value on the provided multiprocessing.Connection.
882
"""
883
connection.send(func(*args, **kwargs))
884
connection.close()
885
886
887
class Client:
240
888
"""A representation of a client host served by this server.
241
889
242
890
Attributes:
891
approved: bool(); None if not yet approved/disapproved
892
approval_delay: datetime.timedelta(); Time to wait for approval
893
approval_duration: datetime.timedelta(); Duration of one approval
894
checker: multiprocessing.Process(); a running checker process used
895
to see if the client lives. None if no process is
896
running.
897
checker_callback_tag: a GLib event source tag, or None
898
checker_command: string; External command which is run to check
899
if client lives. %() expansions are done at
900
runtime with vars(self) as dict, so that for
901
instance %(name)s can be used in the command.
902
checker_initiator_tag: a GLib event source tag, or None
903
created: datetime.datetime(); (UTC) object creation
904
client_structure: Object describing what attributes a client has
905
and is used for storing the client at exit
906
current_checker_command: string; current running checker_command
907
disable_initiator_tag: a GLib event source tag, or None
908
enabled: bool()
909
fingerprint: string (40 or 32 hexadecimal digits); used to
910
uniquely identify an OpenPGP client
911
key_id: string (64 hexadecimal digits); used to uniquely identify
912
a client using raw public keys
913
host: string; available for use by the checker command
914
interval: datetime.timedelta(); How often to start a new checker
915
last_approval_request: datetime.datetime(); (UTC) or None
916
last_checked_ok: datetime.datetime(); (UTC) or None
917
last_checker_status: integer between 0 and 255 reflecting exit
918
status of last checker. -1 reflects crashed
919
checker, -2 means no checker completed yet.
920
last_checker_signal: The signal which killed the last checker, if
921
last_checker_status is -1
922
last_enabled: datetime.datetime(); (UTC) or None
243
923
name: string; from the config file, used in log messages and
244
924
D-Bus identifiers
245
fingerprint: string (40 or 32 hexadecimal digits); used to
246
uniquely identify the client
247
925
secret: bytestring; sent verbatim (over TLS) to client
248
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
251
enabled: bool()
252
last_checked_ok: datetime.datetime(); (UTC) or None
253
926
timeout: datetime.timedelta(); How long from last_checked_ok
254
927
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
257
checker: subprocess.Popen(); a running checker process used
258
to see if the client lives.
259
'None' if no process is running.
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
265
runtime with vars(self) as dict, so that for
266
instance %(name)s can be used in the command.
267
current_checker_command: string; current running checker_command
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
928
extended_timeout: extra long timeout when secret has been sent
929
runtime_expansions: Allowed attributes for runtime expansion.
930
expires: datetime.datetime(); time (UTC) when a client will be
931
disabled, or None
932
server_settings: The server_settings dict from main()
271
933
"""
272
934
935
runtime_expansions = ("approval_delay", "approval_duration",
936
"created", "enabled", "expires", "key_id",
937
"fingerprint", "host", "interval",
938
"last_approval_request", "last_checked_ok",
939
"last_enabled", "name", "timeout")
940
client_defaults = {
941
"timeout": "PT5M",
942
"extended_timeout": "PT15M",
943
"interval": "PT2M",
944
"checker": "fping -q -- %%(host)s",
945
"host": "",
946
"approval_delay": "PT0S",
947
"approval_duration": "PT1S",
948
"approved_by_default": "True",
949
"enabled": "True",
950
}
951
273
952
@staticmethod
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
279
280
def timeout_milliseconds(self):
281
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
283
284
def interval_milliseconds(self):
285
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
287
288
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
290
291
def __init__(self, name = None, disable_hook=None, config=None):
292
"""Note: the 'checker' key in 'config' sets the
293
'checker_command' attribute and *not* the 'checker'
294
attribute."""
953
def config_parser(config):
954
"""Construct a new dict of client settings of this form:
955
{ client_name: {setting_name: value, ...}, ...}
956
with exceptions for any special settings as defined above.
957
NOTE: Must be a pure function. Must return the same result
958
value given the same arguments.
959
"""
960
settings = {}
961
for client_name in config.sections():
962
section = dict(config.items(client_name))
963
client = settings[client_name] = {}
964
965
client["host"] = section["host"]
966
# Reformat values from string types to Python types
967
client["approved_by_default"] = config.getboolean(
968
client_name, "approved_by_default")
969
client["enabled"] = config.getboolean(client_name,
970
"enabled")
971
972
# Uppercase and remove spaces from key_id and fingerprint
973
# for later comparison purposes with return value from the
974
# key_id() and fingerprint() functions
975
client["key_id"] = (section.get("key_id", "").upper()
976
.replace(" ", ""))
977
client["fingerprint"] = (section.get("fingerprint",
978
"").upper()
979
.replace(" ", ""))
980
if not (client["key_id"] or client["fingerprint"]):
981
log.error("Skipping client %s without key_id or"
982
" fingerprint", client_name)
983
del settings[client_name]
984
continue
985
if "secret" in section:
986
client["secret"] = codecs.decode(section["secret"]
987
.encode("utf-8"),
988
"base64")
989
elif "secfile" in section:
990
with open(os.path.expanduser(os.path.expandvars
991
(section["secfile"])),
992
"rb") as secfile:
993
client["secret"] = secfile.read()
994
else:
995
raise TypeError("No secret or secfile for section {}"
996
.format(section))
997
client["timeout"] = string_to_delta(section["timeout"])
998
client["extended_timeout"] = string_to_delta(
999
section["extended_timeout"])
1000
client["interval"] = string_to_delta(section["interval"])
1001
client["approval_delay"] = string_to_delta(
1002
section["approval_delay"])
1003
client["approval_duration"] = string_to_delta(
1004
section["approval_duration"])
1005
client["checker_command"] = section["checker"]
1006
client["last_approval_request"] = None
1007
client["last_checked_ok"] = None
1008
client["last_checker_status"] = -2
1009
1010
return settings
1011
1012
def __init__(self, settings, name=None, server_settings=None):
295
1013
self.name = name
296
if config is None:
297
config = {}
298
logger.debug(u"Creating client %r", self.name)
299
# Uppercase and remove spaces from fingerprint for later
300
# comparison purposes with return value from the fingerprint()
301
# function
302
self.fingerprint = (config[u"fingerprint"].upper()
303
.replace(u" ", u""))
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
310
"rb") as secfile:
311
self.secret = secfile.read()
1014
if server_settings is None:
1015
server_settings = {}
1016
self.server_settings = server_settings
1017
# adding all client settings
1018
for setting, value in settings.items():
1019
setattr(self, setting, value)
1020
1021
if self.enabled:
1022
if not hasattr(self, "last_enabled"):
1023
self.last_enabled = datetime.datetime.utcnow()
1024
if not hasattr(self, "expires"):
1025
self.expires = (datetime.datetime.utcnow()
1026
+ self.timeout)
312
1027
else:
313
raise TypeError(u"No secret or secfile for client %s"
314
% self.name)
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
317
self.enabled = False
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
1028
self.last_enabled = None
1029
self.expires = None
1030
1031
log.debug("Creating client %r", self.name)
1032
log.debug(" Key ID: %s", self.key_id)
1033
log.debug(" Fingerprint: %s", self.fingerprint)
1034
self.created = settings.get("created",
1035
datetime.datetime.utcnow())
1036
1037
# attributes specific for this server instance
323
1038
self.checker = None
324
1039
self.checker_initiator_tag = None
325
1040
self.disable_initiator_tag = None
326
1041
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
1042
self.current_checker_command = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
332
True)
1043
self.approved = None
333
1044
self.approvals_pending = 0
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
339
1045
self.changedstate = multiprocessing_manager.Condition(
1046
multiprocessing_manager.Lock())
1047
self.client_structure = [attr
1048
for attr in self.__dict__.keys()
1049
if not attr.startswith("_")]
1050
self.client_structure.append("client_structure")
1051
1052
for name, t in inspect.getmembers(
1053
type(self), lambda obj: isinstance(obj, property)):
1054
if not name.startswith("_"):
1055
self.client_structure.append(name)
1056
1057
# Send notice to process children that client state has changed
340
1058
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
344
1059
with self.changedstate:
1060
self.changedstate.notify_all()
1061
345
1062
def enable(self):
346
1063
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
1064
if getattr(self, "enabled", False):
348
1065
# Already enabled
349
1066
return
350
self.send_changedstate()
1067
self.enabled = True
351
1068
self.last_enabled = datetime.datetime.utcnow()
352
# Schedule a new checker to be started an 'interval' from now,
353
# and every interval from then on.
354
self.checker_initiator_tag = (gobject.timeout_add
355
(self.interval_milliseconds(),
356
self.start_checker))
357
# Schedule a disable() when 'timeout' has passed
358
self.disable_initiator_tag = (gobject.timeout_add
359
(self.timeout_milliseconds(),
360
self.disable))
361
self.enabled = True
362
# Also start a new checker *right now*.
363
self.start_checker()
364
1069
self.init_checker()
1070
self.send_changedstate()
1071
365
1072
def disable(self, quiet=True):
366
1073
"""Disable this client."""
367
1074
if not getattr(self, "enabled", False):
368
1075
return False
369
1076
if not quiet:
1077
log.info("Disabling client %s", self.name)
1078
if getattr(self, "disable_initiator_tag", None) is not None:
1079
GLib.source_remove(self.disable_initiator_tag)
1080
self.disable_initiator_tag = None
1081
self.expires = None
1082
if getattr(self, "checker_initiator_tag", None) is not None:
1083
GLib.source_remove(self.checker_initiator_tag)
1084
self.checker_initiator_tag = None
1085
self.stop_checker()
1086
self.enabled = False
1087
if not quiet:
370
1088
self.send_changedstate()
371
if not quiet:
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
382
self.enabled = False
383
# Do not run this again if called by a gobject.timeout_add
1089
# Do not run this again if called by a GLib.timeout_add
384
1090
return False
385
1091
386
1092
def __del__(self):
387
self.disable_hook = None
388
1093
self.disable()
389
390
def checker_callback(self, pid, condition, command):
1094
1095
def init_checker(self, randomize_start=False):
1096
# Schedule a new checker to be started a randomly selected
1097
# time (a fraction of 'interval') from now. This spreads out
1098
# the startup of checkers over time when the server is
1099
# started.
1100
if self.checker_initiator_tag is not None:
1101
GLib.source_remove(self.checker_initiator_tag)
1102
interval_milliseconds = int(self.interval.total_seconds()
1103
* 1000)
1104
if randomize_start:
1105
delay_milliseconds = random.randrange(
1106
interval_milliseconds + 1)
1107
else:
1108
delay_milliseconds = interval_milliseconds
1109
self.checker_initiator_tag = GLib.timeout_add(
1110
delay_milliseconds, self.start_checker, randomize_start)
1111
delay = datetime.timedelta(0, 0, 0, delay_milliseconds)
1112
# A checker might take up to an 'interval' of time, so we can
1113
# expire at the soonest one interval after a checker was
1114
# started. Since the initial checker is delayed, the expire
1115
# time might have to be extended.
1116
now = datetime.datetime.utcnow()
1117
self.expires = now + delay + self.interval
1118
# Schedule a disable() at expire time
1119
if self.disable_initiator_tag is not None:
1120
GLib.source_remove(self.disable_initiator_tag)
1121
self.disable_initiator_tag = GLib.timeout_add(
1122
int((self.expires - now).total_seconds() * 1000),
1123
self.disable)
1124
1125
def checker_callback(self, source, condition, connection,
1126
command):
391
1127
"""The checker has completed, so take appropriate actions."""
1128
# Read return code from connection (see call_pipe)
1129
returncode = connection.recv()
1130
connection.close()
1131
if self.checker is not None:
1132
self.checker.join()
392
1133
self.checker_callback_tag = None
393
1134
self.checker = None
394
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
396
if exitstatus == 0:
397
logger.info(u"Checker for %(name)s succeeded",
398
vars(self))
1135
1136
if returncode >= 0:
1137
self.last_checker_status = returncode
1138
self.last_checker_signal = None
1139
if self.last_checker_status == 0:
1140
log.info("Checker for %(name)s succeeded", vars(self))
399
1141
self.checked_ok()
400
1142
else:
401
logger.info(u"Checker for %(name)s failed",
402
vars(self))
1143
log.info("Checker for %(name)s failed", vars(self))
403
1144
else:
404
logger.warning(u"Checker for %(name)s crashed?",
405
vars(self))
406
1145
self.last_checker_status = -1
1146
self.last_checker_signal = -returncode
1147
log.warning("Checker for %(name)s crashed?", vars(self))
1148
return False
1149
407
1150
def checked_ok(self):
408
"""Bump up the timeout for this client.
409
410
This should only be called when the client has been seen,
411
alive and well.
412
"""
1151
"""Assert that the client has been seen, alive and well."""
413
1152
self.last_checked_ok = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
417
self.disable))
418
419
def start_checker(self):
1153
self.last_checker_status = 0
1154
self.last_checker_signal = None
1155
self.bump_timeout()
1156
1157
def bump_timeout(self, timeout=None):
1158
"""Bump up the timeout for this client."""
1159
if timeout is None:
1160
timeout = self.timeout
1161
if self.disable_initiator_tag is not None:
1162
GLib.source_remove(self.disable_initiator_tag)
1163
self.disable_initiator_tag = None
1164
if getattr(self, "enabled", False):
1165
self.disable_initiator_tag = GLib.timeout_add(
1166
int(timeout.total_seconds() * 1000), self.disable)
1167
self.expires = datetime.datetime.utcnow() + timeout
1168
1169
def need_approval(self):
1170
self.last_approval_request = datetime.datetime.utcnow()
1171
1172
def start_checker(self, start_was_randomized=False):
420
1173
"""Start a new checker subprocess if one is not running.
421
1174
422
1175
If a checker already exists, leave it running and do
423
1176
nothing."""
424
1177
# The reason for not killing a running checker is that if we
425
# did that, then if a checker (for some reason) started
426
# running slowly and taking more than 'interval' time, the
427
# client would inevitably timeout, since no checker would get
428
# a chance to run to completion. If we instead leave running
1178
# did that, and if a checker (for some reason) started running
1179
# slowly and taking more than 'interval' time, then the client
1180
# would inevitably timeout, since no checker would get a
1181
# chance to run to completion. If we instead leave running
429
1182
# checkers alone, the checker would have to take more time
430
1183
# than 'timeout' for the client to be disabled, which is as it
431
1184
# should be.
432
433
# If a checker exists, make sure it is not a zombie
434
try:
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
436
except (AttributeError, OSError), error:
437
if (isinstance(error, OSError)
438
and error.errno != errno.ECHILD):
439
raise error
440
else:
441
if pid:
442
logger.warning(u"Checker was a zombie")
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status,
445
self.current_checker_command)
1185
1186
if self.checker is not None and not self.checker.is_alive():
1187
log.warning("Checker was not alive; joining")
1188
self.checker.join()
1189
self.checker = None
446
1190
# Start a new checker if needed
447
1191
if self.checker is None:
1192
# Escape attributes for the shell
1193
escaped_attrs = {
1194
attr: shlex.quote(str(getattr(self, attr)))
1195
for attr in self.runtime_expansions}
448
1196
try:
449
# In case checker_command has exactly one % operator
450
command = self.checker_command % self.host
451
except TypeError:
452
# Escape attributes for the shell
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
455
errors=
456
u'replace')))
457
for key, val in
458
vars(self).iteritems())
459
try:
460
command = self.checker_command % escaped_attrs
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
464
return True # Try again later
1197
command = self.checker_command % escaped_attrs
1198
except TypeError as error:
1199
log.error('Could not format string "%s"',
1200
self.checker_command, exc_info=error)
1201
return True # Try again later
465
1202
self.current_checker_command = command
466
try:
467
logger.info(u"Starting checker %r for %s",
468
command, self.name)
469
# We don't need to redirect stdout and stderr, since
470
# in normal mode, that is already done by daemon(),
471
# and in debug mode we don't want to. (Stdin is
472
# always replaced by /dev/null.)
473
self.checker = subprocess.Popen(command,
474
close_fds=True,
475
shell=True, cwd=u"/")
476
self.checker_callback_tag = (gobject.child_watch_add
477
(self.checker.pid,
478
self.checker_callback,
479
data=command))
480
# The checker may have completed before the gobject
481
# watch was added. Check for this.
482
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
483
if pid:
484
gobject.source_remove(self.checker_callback_tag)
485
self.checker_callback(pid, status, command)
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
488
error)
489
# Re-run this periodically if run by gobject.timeout_add
1203
log.info("Starting checker %r for %s", command, self.name)
1204
# We don't need to redirect stdout and stderr, since
1205
# in normal mode, that is already done by daemon(),
1206
# and in debug mode we don't want to. (Stdin is
1207
# always replaced by /dev/null.)
1208
# The exception is when not debugging but nevertheless
1209
# running in the foreground; use the previously
1210
# created wnull.
1211
popen_args = {"close_fds": True,
1212
"shell": True,
1213
"cwd": "/"}
1214
if (not self.server_settings["debug"]
1215
and self.server_settings["foreground"]):
1216
popen_args.update({"stdout": wnull,
1217
"stderr": wnull})
1218
pipe = multiprocessing.Pipe(duplex=False)
1219
self.checker = multiprocessing.Process(
1220
target=call_pipe,
1221
args=(pipe[1], subprocess.call, command),
1222
kwargs=popen_args)
1223
self.checker.start()
1224
self.checker_callback_tag = GLib.io_add_watch(
1225
GLib.IOChannel.unix_new(pipe[0].fileno()),
1226
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1227
self.checker_callback, pipe[0], command)
1228
if start_was_randomized:
1229
# We were started after a random delay; Schedule a new
1230
# checker to be started an 'interval' from now, and every
1231
# interval from then on.
1232
now = datetime.datetime.utcnow()
1233
self.checker_initiator_tag = GLib.timeout_add(
1234
int(self.interval.total_seconds() * 1000),
1235
self.start_checker)
1236
self.expires = max(self.expires, now + self.interval)
1237
# Don't start a new checker again after same random delay
1238
return False
1239
# Re-run this periodically if run by GLib.timeout_add
490
1240
return True
491
1241
492
1242
def stop_checker(self):
493
1243
"""Force the checker process, if any, to stop."""
494
1244
if self.checker_callback_tag:
495
gobject.source_remove(self.checker_callback_tag)
1245
GLib.source_remove(self.checker_callback_tag)
496
1246
self.checker_callback_tag = None
497
if getattr(self, u"checker", None) is None:
1247
if getattr(self, "checker", None) is None:
498
1248
return
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
500
try:
501
os.kill(self.checker.pid, signal.SIGTERM)
502
#time.sleep(0.5)
503
#if self.checker.poll() is None:
504
# os.kill(self.checker.pid, signal.SIGKILL)
505
except OSError, error:
506
if error.errno != errno.ESRCH: # No such process
507
raise
1249
log.debug("Stopping checker for %(name)s", vars(self))
1250
self.checker.terminate()
508
1251
self.checker = None
509
1252
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
1253
1254
def dbus_service_property(dbus_interface,
1255
signature="v",
1256
access="readwrite",
1257
byte_arrays=False):
512
1258
"""Decorators for marking methods of a DBusObjectWithProperties to
513
1259
become properties on the D-Bus.
514
1260
515
1261
The decorated method will be called with no arguments by "Get"
516
1262
and with one argument by "Set".
517
1263
518
1264
The parameters, where they are supported, are the same as
519
1265
dbus.service.method, except there is only "signature", since the
520
1266
type from Get() and the type sent to Set() is the same.
521
1267
"""
522
1268
# Encoding deeply encoded byte arrays is not supported yet by the
523
1269
# "Set" method, so we fail early here:
524
if byte_arrays and signature != u"ay":
525
raise ValueError(u"Byte arrays not supported for non-'ay'"
526
u" signature %r" % signature)
1270
if byte_arrays and signature != "ay":
1271
raise ValueError("Byte arrays not supported for non-'ay'"
1272
" signature {!r}".format(signature))
1273
527
1274
def decorator(func):
528
1275
func._dbus_is_property = True
529
1276
func._dbus_interface = dbus_interface
530
1277
func._dbus_signature = signature
531
1278
func._dbus_access = access
532
1279
func._dbus_name = func.__name__
533
if func._dbus_name.endswith(u"_dbus_property"):
1280
if func._dbus_name.endswith("_dbus_property"):
534
1281
func._dbus_name = func._dbus_name[:-14]
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
536
return func
1282
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1283
return func
1284
1285
return decorator
1286
1287
1288
def dbus_interface_annotations(dbus_interface):
1289
"""Decorator for marking functions returning interface annotations
1290
1291
Usage:
1292
1293
@dbus_interface_annotations("org.example.Interface")
1294
def _foo(self): # Function name does not matter
1295
return {"org.freedesktop.DBus.Deprecated": "true",
1296
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1297
"false"}
1298
"""
1299
1300
def decorator(func):
1301
func._dbus_is_interface = True
1302
func._dbus_interface = dbus_interface
1303
func._dbus_name = dbus_interface
1304
return func
1305
1306
return decorator
1307
1308
1309
def dbus_annotations(annotations):
1310
"""Decorator to annotate D-Bus methods, signals or properties
1311
Usage:
1312
1313
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1314
"org.freedesktop.DBus.Property."
1315
"EmitsChangedSignal": "false"})
1316
@dbus_service_property("org.example.Interface", signature="b",
1317
access="r")
1318
def Property_dbus_property(self):
1319
return dbus.Boolean(False)
1320
1321
See also the DBusObjectWithAnnotations class.
1322
"""
1323
1324
def decorator(func):
1325
func._dbus_annotations = annotations
1326
return func
1327
537
1328
return decorator
538
1329
539
1330
540
1331
class DBusPropertyException(dbus.exceptions.DBusException):
541
1332
"""A base class for D-Bus property-related exceptions
542
1333
"""
543
def __unicode__(self):
544
return unicode(str(self))
1334
pass
545
1335
546
1336
547
1337
class DBusPropertyAccessException(DBusPropertyException):
556
1346
pass
557
1347
558
1348
559
class DBusObjectWithProperties(dbus.service.Object):
1349
class DBusObjectWithAnnotations(dbus.service.Object):
1350
"""A D-Bus object with annotations.
1351
1352
Classes inheriting from this can use the dbus_annotations
1353
decorator to add annotations to methods or signals.
1354
"""
1355
1356
@staticmethod
1357
def _is_dbus_thing(thing):
1358
"""Returns a function testing if an attribute is a D-Bus thing
1359
1360
If called like _is_dbus_thing("method") it returns a function
1361
suitable for use as predicate to inspect.getmembers().
1362
"""
1363
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1364
False)
1365
1366
def _get_all_dbus_things(self, thing):
1367
"""Returns a generator of (name, attribute) pairs
1368
"""
1369
return ((getattr(athing.__get__(self), "_dbus_name", name),
1370
athing.__get__(self))
1371
for cls in self.__class__.__mro__
1372
for name, athing in
1373
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1374
1375
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1376
out_signature="s",
1377
path_keyword="object_path",
1378
connection_keyword="connection")
1379
def Introspect(self, object_path, connection):
1380
"""Overloading of standard D-Bus method.
1381
1382
Inserts annotation tags on methods and signals.
1383
"""
1384
xmlstring = dbus.service.Object.Introspect(self, object_path,
1385
connection)
1386
try:
1387
document = xml.dom.minidom.parseString(xmlstring)
1388
1389
for if_tag in document.getElementsByTagName("interface"):
1390
# Add annotation tags
1391
for typ in ("method", "signal"):
1392
for tag in if_tag.getElementsByTagName(typ):
1393
annots = dict()
1394
for name, prop in (self.
1395
_get_all_dbus_things(typ)):
1396
if (name == tag.getAttribute("name")
1397
and prop._dbus_interface
1398
== if_tag.getAttribute("name")):
1399
annots.update(getattr(
1400
prop, "_dbus_annotations", {}))
1401
for name, value in annots.items():
1402
ann_tag = document.createElement(
1403
"annotation")
1404
ann_tag.setAttribute("name", name)
1405
ann_tag.setAttribute("value", value)
1406
tag.appendChild(ann_tag)
1407
# Add interface annotation tags
1408
for annotation, value in dict(
1409
itertools.chain.from_iterable(
1410
annotations().items()
1411
for name, annotations
1412
in self._get_all_dbus_things("interface")
1413
if name == if_tag.getAttribute("name")
1414
)).items():
1415
ann_tag = document.createElement("annotation")
1416
ann_tag.setAttribute("name", annotation)
1417
ann_tag.setAttribute("value", value)
1418
if_tag.appendChild(ann_tag)
1419
# Fix argument name for the Introspect method itself
1420
if (if_tag.getAttribute("name")
1421
== dbus.INTROSPECTABLE_IFACE):
1422
for cn in if_tag.getElementsByTagName("method"):
1423
if cn.getAttribute("name") == "Introspect":
1424
for arg in cn.getElementsByTagName("arg"):
1425
if (arg.getAttribute("direction")
1426
== "out"):
1427
arg.setAttribute("name",
1428
"xml_data")
1429
xmlstring = document.toxml("utf-8")
1430
document.unlink()
1431
except (AttributeError, xml.dom.DOMException,
1432
xml.parsers.expat.ExpatError) as error:
1433
log.error("Failed to override Introspection method",
1434
exc_info=error)
1435
return xmlstring
1436
1437
1438
class DBusObjectWithProperties(DBusObjectWithAnnotations):
560
1439
"""A D-Bus object with properties.
561
1440
562
1441
Classes inheriting from this can use the dbus_service_property
563
1442
decorator to expose methods as D-Bus properties. It exposes the
564
1443
standard Get(), Set(), and GetAll() methods on the D-Bus.
565
1444
"""
566
567
@staticmethod
568
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
570
571
def _get_all_dbus_properties(self):
572
"""Returns a generator of (name, attribute) pairs
573
"""
574
return ((prop._dbus_name, prop)
575
for name, prop in
576
inspect.getmembers(self, self._is_dbus_property))
577
1445
578
1446
def _get_dbus_property(self, interface_name, property_name):
579
1447
"""Returns a bound method if one exists which is a D-Bus
580
1448
property with the specified name and interface.
581
1449
"""
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
585
if (prop is None
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
590
continue
591
return prop
1450
for cls in self.__class__.__mro__:
1451
for name, value in inspect.getmembers(
1452
cls, self._is_dbus_thing("property")):
1453
if (value._dbus_name == property_name
1454
and value._dbus_interface == interface_name):
1455
return value.__get__(self)
1456
592
1457
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
595
+ property_name)
596
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
1458
raise DBusPropertyNotFound("{}:{}.{}".format(
1459
self.dbus_object_path, interface_name, property_name))
1460
1461
@classmethod
1462
def _get_all_interface_names(cls):
1463
"""Get a sequence of all interfaces supported by an object"""
1464
return (name for name in set(getattr(getattr(x, attr),
1465
"_dbus_interface", None)
1466
for x in (inspect.getmro(cls))
1467
for attr in dir(x))
1468
if name is not None)
1469
1470
@dbus.service.method(dbus.PROPERTIES_IFACE,
1471
in_signature="ss",
1472
out_signature="v")
599
1473
def Get(self, interface_name, property_name):
600
1474
"""Standard D-Bus property Get() method, see D-Bus standard.
601
1475
"""
602
1476
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
1477
if prop._dbus_access == "write":
604
1478
raise DBusPropertyAccessException(property_name)
605
1479
value = prop()
606
if not hasattr(value, u"variant_level"):
1480
if not hasattr(value, "variant_level"):
607
1481
return value
608
1482
return type(value)(value, variant_level=value.variant_level+1)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1483
1484
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
1485
def Set(self, interface_name, property_name, value):
612
1486
"""Standard D-Bus property Set() method, see D-Bus standard.
613
1487
"""
614
1488
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
1489
if prop._dbus_access == "read":
616
1490
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
1491
if prop._dbus_get_args_options["byte_arrays"]:
618
1492
# The byte_arrays option is not supported yet on
619
1493
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
621
raise ValueError
622
value = dbus.ByteArray(''.join(unichr(byte)
623
for byte in value))
1494
if prop._dbus_signature != "ay":
1495
raise ValueError("Byte arrays not supported for non-"
1496
"'ay' signature {!r}"
1497
.format(prop._dbus_signature))
1498
value = dbus.ByteArray(bytes(value))
624
1499
prop(value)
625
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
1500
1501
@dbus.service.method(dbus.PROPERTIES_IFACE,
1502
in_signature="s",
1503
out_signature="a{sv}")
628
1504
def GetAll(self, interface_name):
629
1505
"""Standard D-Bus property GetAll() method, see D-Bus
630
1506
standard.
631
1507
632
1508
Note: Will not include properties with access="write".
633
1509
"""
634
all = {}
635
for name, prop in self._get_all_dbus_properties():
1510
properties = {}
1511
for name, prop in self._get_all_dbus_things("property"):
636
1512
if (interface_name
637
1513
and interface_name != prop._dbus_interface):
638
1514
# Interface non-empty but did not match
639
1515
continue
640
1516
# Ignore write-only properties
641
if prop._dbus_access == u"write":
1517
if prop._dbus_access == "write":
642
1518
continue
643
1519
value = prop()
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
1520
if not hasattr(value, "variant_level"):
1521
properties[name] = value
646
1522
continue
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
650
1523
properties[name] = type(value)(
1524
value, variant_level=value.variant_level + 1)
1525
return dbus.Dictionary(properties, signature="sv")
1526
1527
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1528
def PropertiesChanged(self, interface_name, changed_properties,
1529
invalidated_properties):
1530
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1531
standard.
1532
"""
1533
pass
1534
651
1535
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
652
out_signature=u"s",
653
path_keyword='object_path',
654
connection_keyword='connection')
1536
out_signature="s",
1537
path_keyword="object_path",
1538
connection_keyword="connection")
655
1539
def Introspect(self, object_path, connection):
656
"""Standard D-Bus method, overloaded to insert property tags.
1540
"""Overloading of standard D-Bus method.
1541
1542
Inserts property tags and interface annotation tags.
657
1543
"""
658
xmlstring = dbus.service.Object.Introspect(self, object_path,
659
connection)
1544
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1545
object_path,
1546
connection)
660
1547
try:
661
1548
document = xml.dom.minidom.parseString(xmlstring)
1549
662
1550
def make_tag(document, name, prop):
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
1551
e = document.createElement("property")
1552
e.setAttribute("name", name)
1553
e.setAttribute("type", prop._dbus_signature)
1554
e.setAttribute("access", prop._dbus_access)
667
1555
return e
668
for if_tag in document.getElementsByTagName(u"interface"):
1556
1557
for if_tag in document.getElementsByTagName("interface"):
1558
# Add property tags
669
1559
for tag in (make_tag(document, name, prop)
670
1560
for name, prop
671
in self._get_all_dbus_properties()
1561
in self._get_all_dbus_things("property")
672
1562
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
1563
== if_tag.getAttribute("name")):
674
1564
if_tag.appendChild(tag)
1565
# Add annotation tags for properties
1566
for tag in if_tag.getElementsByTagName("property"):
1567
annots = dict()
1568
for name, prop in self._get_all_dbus_things(
1569
"property"):
1570
if (name == tag.getAttribute("name")
1571
and prop._dbus_interface
1572
== if_tag.getAttribute("name")):
1573
annots.update(getattr(
1574
prop, "_dbus_annotations", {}))
1575
for name, value in annots.items():
1576
ann_tag = document.createElement(
1577
"annotation")
1578
ann_tag.setAttribute("name", name)
1579
ann_tag.setAttribute("value", value)
1580
tag.appendChild(ann_tag)
675
1581
# Add the names to the return values for the
676
1582
# "org.freedesktop.DBus.Properties" methods
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
688
== u"out"):
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
691
document.unlink()
692
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
695
error)
696
return xmlstring
697
698
1583
if (if_tag.getAttribute("name")
1584
== "org.freedesktop.DBus.Properties"):
1585
for cn in if_tag.getElementsByTagName("method"):
1586
if cn.getAttribute("name") == "Get":
1587
for arg in cn.getElementsByTagName("arg"):
1588
if (arg.getAttribute("direction")
1589
== "out"):
1590
arg.setAttribute("name", "value")
1591
elif cn.getAttribute("name") == "GetAll":
1592
for arg in cn.getElementsByTagName("arg"):
1593
if (arg.getAttribute("direction")
1594
== "out"):
1595
arg.setAttribute("name", "props")
1596
xmlstring = document.toxml("utf-8")
1597
document.unlink()
1598
except (AttributeError, xml.dom.DOMException,
1599
xml.parsers.expat.ExpatError) as error:
1600
log.error("Failed to override Introspection method",
1601
exc_info=error)
1602
return xmlstring
1603
1604
1605
try:
1606
dbus.OBJECT_MANAGER_IFACE
1607
except AttributeError:
1608
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1609
1610
1611
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1612
"""A D-Bus object with an ObjectManager.
1613
1614
Classes inheriting from this exposes the standard
1615
GetManagedObjects call and the InterfacesAdded and
1616
InterfacesRemoved signals on the standard
1617
"org.freedesktop.DBus.ObjectManager" interface.
1618
1619
Note: No signals are sent automatically; they must be sent
1620
manually.
1621
"""
1622
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1623
out_signature="a{oa{sa{sv}}}")
1624
def GetManagedObjects(self):
1625
"""This function must be overridden"""
1626
raise NotImplementedError()
1627
1628
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1629
signature="oa{sa{sv}}")
1630
def InterfacesAdded(self, object_path, interfaces_and_properties):
1631
pass
1632
1633
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1634
def InterfacesRemoved(self, object_path, interfaces):
1635
pass
1636
1637
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1638
out_signature="s",
1639
path_keyword="object_path",
1640
connection_keyword="connection")
1641
def Introspect(self, object_path, connection):
1642
"""Overloading of standard D-Bus method.
1643
1644
Override return argument name of GetManagedObjects to be
1645
"objpath_interfaces_and_properties"
1646
"""
1647
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1648
object_path,
1649
connection)
1650
try:
1651
document = xml.dom.minidom.parseString(xmlstring)
1652
1653
for if_tag in document.getElementsByTagName("interface"):
1654
# Fix argument name for the GetManagedObjects method
1655
if (if_tag.getAttribute("name")
1656
== dbus.OBJECT_MANAGER_IFACE):
1657
for cn in if_tag.getElementsByTagName("method"):
1658
if (cn.getAttribute("name")
1659
== "GetManagedObjects"):
1660
for arg in cn.getElementsByTagName("arg"):
1661
if (arg.getAttribute("direction")
1662
== "out"):
1663
arg.setAttribute(
1664
"name",
1665
"objpath_interfaces"
1666
"_and_properties")
1667
xmlstring = document.toxml("utf-8")
1668
document.unlink()
1669
except (AttributeError, xml.dom.DOMException,
1670
xml.parsers.expat.ExpatError) as error:
1671
log.error("Failed to override Introspection method",
1672
exc_info=error)
1673
return xmlstring
1674
1675
1676
def datetime_to_dbus(dt, variant_level=0):
1677
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1678
if dt is None:
1679
return dbus.String("", variant_level=variant_level)
1680
return dbus.String(dt.isoformat(), variant_level=variant_level)
1681
1682
1683
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1684
"""A class decorator; applied to a subclass of
1685
dbus.service.Object, it will add alternate D-Bus attributes with
1686
interface names according to the "alt_interface_names" mapping.
1687
Usage:
1688
1689
@alternate_dbus_interfaces({"org.example.Interface":
1690
"net.example.AlternateInterface"})
1691
class SampleDBusObject(dbus.service.Object):
1692
@dbus.service.method("org.example.Interface")
1693
def SampleDBusMethod():
1694
pass
1695
1696
The above "SampleDBusMethod" on "SampleDBusObject" will be
1697
reachable via two interfaces: "org.example.Interface" and
1698
"net.example.AlternateInterface", the latter of which will have
1699
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1700
"true", unless "deprecate" is passed with a False value.
1701
1702
This works for methods and signals, and also for D-Bus properties
1703
(from DBusObjectWithProperties) and interfaces (from the
1704
dbus_interface_annotations decorator).
1705
"""
1706
1707
def wrapper(cls):
1708
for orig_interface_name, alt_interface_name in (
1709
alt_interface_names.items()):
1710
attr = {}
1711
interface_names = set()
1712
# Go though all attributes of the class
1713
for attrname, attribute in inspect.getmembers(cls):
1714
# Ignore non-D-Bus attributes, and D-Bus attributes
1715
# with the wrong interface name
1716
if (not hasattr(attribute, "_dbus_interface")
1717
or not attribute._dbus_interface.startswith(
1718
orig_interface_name)):
1719
continue
1720
# Create an alternate D-Bus interface name based on
1721
# the current name
1722
alt_interface = attribute._dbus_interface.replace(
1723
orig_interface_name, alt_interface_name)
1724
interface_names.add(alt_interface)
1725
# Is this a D-Bus signal?
1726
if getattr(attribute, "_dbus_is_signal", False):
1727
# Extract the original non-method undecorated
1728
# function by black magic
1729
if sys.version_info.major == 2:
1730
nonmethod_func = (dict(
1731
zip(attribute.func_code.co_freevars,
1732
attribute.__closure__))
1733
["func"].cell_contents)
1734
else:
1735
nonmethod_func = (dict(
1736
zip(attribute.__code__.co_freevars,
1737
attribute.__closure__))
1738
["func"].cell_contents)
1739
# Create a new, but exactly alike, function
1740
# object, and decorate it to be a new D-Bus signal
1741
# with the alternate D-Bus interface name
1742
new_function = copy_function(nonmethod_func)
1743
new_function = (dbus.service.signal(
1744
alt_interface,
1745
attribute._dbus_signature)(new_function))
1746
# Copy annotations, if any
1747
try:
1748
new_function._dbus_annotations = dict(
1749
attribute._dbus_annotations)
1750
except AttributeError:
1751
pass
1752
1753
# Define a creator of a function to call both the
1754
# original and alternate functions, so both the
1755
# original and alternate signals gets sent when
1756
# the function is called
1757
def fixscope(func1, func2):
1758
"""This function is a scope container to pass
1759
func1 and func2 to the "call_both" function
1760
outside of its arguments"""
1761
1762
@functools.wraps(func2)
1763
def call_both(*args, **kwargs):
1764
"""This function will emit two D-Bus
1765
signals by calling func1 and func2"""
1766
func1(*args, **kwargs)
1767
func2(*args, **kwargs)
1768
# Make wrapper function look like a D-Bus
1769
# signal
1770
for name, attr in inspect.getmembers(func2):
1771
if name.startswith("_dbus_"):
1772
setattr(call_both, name, attr)
1773
1774
return call_both
1775
# Create the "call_both" function and add it to
1776
# the class
1777
attr[attrname] = fixscope(attribute, new_function)
1778
# Is this a D-Bus method?
1779
elif getattr(attribute, "_dbus_is_method", False):
1780
# Create a new, but exactly alike, function
1781
# object. Decorate it to be a new D-Bus method
1782
# with the alternate D-Bus interface name. Add it
1783
# to the class.
1784
attr[attrname] = (
1785
dbus.service.method(
1786
alt_interface,
1787
attribute._dbus_in_signature,
1788
attribute._dbus_out_signature)
1789
(copy_function(attribute)))
1790
# Copy annotations, if any
1791
try:
1792
attr[attrname]._dbus_annotations = dict(
1793
attribute._dbus_annotations)
1794
except AttributeError:
1795
pass
1796
# Is this a D-Bus property?
1797
elif getattr(attribute, "_dbus_is_property", False):
1798
# Create a new, but exactly alike, function
1799
# object, and decorate it to be a new D-Bus
1800
# property with the alternate D-Bus interface
1801
# name. Add it to the class.
1802
attr[attrname] = (dbus_service_property(
1803
alt_interface, attribute._dbus_signature,
1804
attribute._dbus_access,
1805
attribute._dbus_get_args_options
1806
["byte_arrays"])
1807
(copy_function(attribute)))
1808
# Copy annotations, if any
1809
try:
1810
attr[attrname]._dbus_annotations = dict(
1811
attribute._dbus_annotations)
1812
except AttributeError:
1813
pass
1814
# Is this a D-Bus interface?
1815
elif getattr(attribute, "_dbus_is_interface", False):
1816
# Create a new, but exactly alike, function
1817
# object. Decorate it to be a new D-Bus interface
1818
# with the alternate D-Bus interface name. Add it
1819
# to the class.
1820
attr[attrname] = (
1821
dbus_interface_annotations(alt_interface)
1822
(copy_function(attribute)))
1823
if deprecate:
1824
# Deprecate all alternate interfaces
1825
iname = "_AlternateDBusNames_interface_annotation{}"
1826
for interface_name in interface_names:
1827
1828
@dbus_interface_annotations(interface_name)
1829
def func(self):
1830
return {"org.freedesktop.DBus.Deprecated":
1831
"true"}
1832
# Find an unused name
1833
for aname in (iname.format(i)
1834
for i in itertools.count()):
1835
if aname not in attr:
1836
attr[aname] = func
1837
break
1838
if interface_names:
1839
# Replace the class with a new subclass of it with
1840
# methods, signals, etc. as created above.
1841
if sys.version_info.major == 2:
1842
cls = type(b"{}Alternate".format(cls.__name__),
1843
(cls, ), attr)
1844
else:
1845
cls = type("{}Alternate".format(cls.__name__),
1846
(cls, ), attr)
1847
return cls
1848
1849
return wrapper
1850
1851
1852
@alternate_dbus_interfaces({"se.recompile.Mandos":
1853
"se.bsnet.fukt.Mandos"})
699
1854
class ClientDBus(Client, DBusObjectWithProperties):
700
1855
"""A Client class using D-Bus
701
1856
702
1857
Attributes:
703
1858
dbus_object_path: dbus.ObjectPath
704
1859
bus: dbus.SystemBus()
705
1860
"""
1861
1862
runtime_expansions = (Client.runtime_expansions
1863
+ ("dbus_object_path", ))
1864
1865
_interface = "se.recompile.Mandos.Client"
1866
706
1867
# dbus.service.Object doesn't use super(), so we can't either.
707
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1868
1869
def __init__(self, bus=None, *args, **kwargs):
710
1870
self.bus = bus
711
1871
Client.__init__(self, *args, **kwargs)
712
1872
# Only now, when this client is initialized, can it show up on
713
1873
# the D-Bus
714
self.dbus_object_path = (dbus.ObjectPath
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1874
client_object_name = str(self.name).translate(
1875
{ord("."): ord("_"),
1876
ord("-"): ord("_")})
1877
self.dbus_object_path = dbus.ObjectPath(
1878
"/clients/" + client_object_name)
717
1879
DBusObjectWithProperties.__init__(self, self.bus,
718
1880
self.dbus_object_path)
719
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
725
bval = bool(value)
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
730
dbus_bool)
731
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
735
736
@staticmethod
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
741
742
def enable(self):
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
746
# Emit D-Bus signals
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
752
variant_level=1))
753
return r
754
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
759
# Emit D-Bus signal
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
762
return r
763
1881
1882
def notifychangeproperty(transform_func, dbus_name,
1883
type_func=lambda x: x,
1884
variant_level=1,
1885
invalidate_only=False,
1886
_interface=_interface):
1887
""" Modify a variable so that it's a property which announces
1888
its changes to DBus.
1889
1890
transform_fun: Function that takes a value and a variant_level
1891
and transforms it to a D-Bus type.
1892
dbus_name: D-Bus name of the variable
1893
type_func: Function that transform the value before sending it
1894
to the D-Bus. Default: no transform
1895
variant_level: D-Bus variant level. Default: 1
1896
"""
1897
attrname = "_{}".format(dbus_name)
1898
1899
def setter(self, value):
1900
if hasattr(self, "dbus_object_path"):
1901
if (not hasattr(self, attrname) or
1902
type_func(getattr(self, attrname, None))
1903
!= type_func(value)):
1904
if invalidate_only:
1905
self.PropertiesChanged(
1906
_interface, dbus.Dictionary(),
1907
dbus.Array((dbus_name, )))
1908
else:
1909
dbus_value = transform_func(
1910
type_func(value),
1911
variant_level=variant_level)
1912
self.PropertyChanged(dbus.String(dbus_name),
1913
dbus_value)
1914
self.PropertiesChanged(
1915
_interface,
1916
dbus.Dictionary({dbus.String(dbus_name):
1917
dbus_value}),
1918
dbus.Array())
1919
setattr(self, attrname, value)
1920
1921
return property(lambda self: getattr(self, attrname), setter)
1922
1923
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1924
approvals_pending = notifychangeproperty(dbus.Boolean,
1925
"ApprovalPending",
1926
type_func=bool)
1927
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1928
last_enabled = notifychangeproperty(datetime_to_dbus,
1929
"LastEnabled")
1930
checker = notifychangeproperty(
1931
dbus.Boolean, "CheckerRunning",
1932
type_func=lambda checker: checker is not None)
1933
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1934
"LastCheckedOK")
1935
last_checker_status = notifychangeproperty(dbus.Int16,
1936
"LastCheckerStatus")
1937
last_approval_request = notifychangeproperty(
1938
datetime_to_dbus, "LastApprovalRequest")
1939
approved_by_default = notifychangeproperty(dbus.Boolean,
1940
"ApprovedByDefault")
1941
approval_delay = notifychangeproperty(
1942
dbus.UInt64, "ApprovalDelay",
1943
type_func=lambda td: td.total_seconds() * 1000)
1944
approval_duration = notifychangeproperty(
1945
dbus.UInt64, "ApprovalDuration",
1946
type_func=lambda td: td.total_seconds() * 1000)
1947
host = notifychangeproperty(dbus.String, "Host")
1948
timeout = notifychangeproperty(
1949
dbus.UInt64, "Timeout",
1950
type_func=lambda td: td.total_seconds() * 1000)
1951
extended_timeout = notifychangeproperty(
1952
dbus.UInt64, "ExtendedTimeout",
1953
type_func=lambda td: td.total_seconds() * 1000)
1954
interval = notifychangeproperty(
1955
dbus.UInt64, "Interval",
1956
type_func=lambda td: td.total_seconds() * 1000)
1957
checker_command = notifychangeproperty(dbus.String, "Checker")
1958
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1959
invalidate_only=True)
1960
1961
del notifychangeproperty
1962
764
1963
def __del__(self, *args, **kwargs):
765
1964
try:
766
1965
self.remove_from_connection()
767
1966
except LookupError:
768
1967
pass
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1968
if hasattr(DBusObjectWithProperties, "__del__"):
770
1969
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1970
Client.__del__(self, *args, **kwargs)
772
773
def checker_callback(self, pid, condition, command,
774
*args, **kwargs):
775
self.checker_callback_tag = None
776
self.checker = None
777
# Emit D-Bus signal
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
780
if os.WIFEXITED(condition):
781
exitstatus = os.WEXITSTATUS(condition)
1971
1972
def checker_callback(self, source, condition,
1973
connection, command, *args, **kwargs):
1974
ret = Client.checker_callback(self, source, condition,
1975
connection, command, *args,
1976
**kwargs)
1977
exitstatus = self.last_checker_status
1978
if exitstatus >= 0:
782
1979
# Emit D-Bus signal
783
1980
self.CheckerCompleted(dbus.Int16(exitstatus),
784
dbus.Int64(condition),
1981
# This is specific to GNU libC
1982
dbus.Int64(exitstatus << 8),
785
1983
dbus.String(command))
786
1984
else:
787
1985
# Emit D-Bus signal
788
1986
self.CheckerCompleted(dbus.Int16(-1),
789
dbus.Int64(condition),
1987
dbus.Int64(
1988
# This is specific to GNU libC
1989
(exitstatus << 8)
1990
| self.last_checker_signal),
790
1991
dbus.String(command))
791
792
return Client.checker_callback(self, pid, condition, command,
793
*args, **kwargs)
794
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
797
# Emit D-Bus signal
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
801
variant_level=1)))
802
return r
803
1992
return ret
1993
804
1994
def start_checker(self, *args, **kwargs):
805
old_checker = self.checker
806
if self.checker is not None:
807
old_checker_pid = self.checker.pid
808
else:
809
old_checker_pid = None
1995
old_checker_pid = getattr(self.checker, "pid", None)
810
1996
r = Client.start_checker(self, *args, **kwargs)
811
1997
# Only if new checker process was started
812
1998
if (self.checker is not None
813
1999
and old_checker_pid != self.checker.pid):
814
2000
# Emit D-Bus signal
815
2001
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
819
return r
820
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
828
2002
return r
829
2003
830
2004
def _reset_approved(self):
831
self._approved = None
2005
self.approved = None
832
2006
return False
833
2007
834
2008
def approve(self, value=True):
2009
self.approved = value
2010
GLib.timeout_add(int(self.approval_duration.total_seconds()
2011
* 1000), self._reset_approved)
835
2012
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
838
(self.approval_duration),
839
self._reset_approved)
840
841
842
## D-Bus methods, signals & properties
843
_interface = u"se.bsnet.fukt.Mandos.Client"
844
845
## Signals
846
2013
2014
# D-Bus methods, signals & properties
2015
2016
# Interfaces
2017
2018
# Signals
2019
847
2020
# CheckerCompleted - signal
848
@dbus.service.signal(_interface, signature=u"nxs")
2021
@dbus.service.signal(_interface, signature="nxs")
849
2022
def CheckerCompleted(self, exitcode, waitstatus, command):
850
2023
"D-Bus signal"
851
2024
pass
852
2025
853
2026
# CheckerStarted - signal
854
@dbus.service.signal(_interface, signature=u"s")
2027
@dbus.service.signal(_interface, signature="s")
855
2028
def CheckerStarted(self, command):
856
2029
"D-Bus signal"
857
2030
pass
858
2031
859
2032
# PropertyChanged - signal
860
@dbus.service.signal(_interface, signature=u"sv")
2033
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2034
@dbus.service.signal(_interface, signature="sv")
861
2035
def PropertyChanged(self, property, value):
862
2036
"D-Bus signal"
863
2037
pass
864
2038
865
2039
# GotSecret - signal
866
2040
@dbus.service.signal(_interface)
867
2041
def GotSecret(self):
870
2044
server to mandos-client
871
2045
"""
872
2046
pass
873
2047
874
2048
# Rejected - signal
875
@dbus.service.signal(_interface, signature=u"s")
2049
@dbus.service.signal(_interface, signature="s")
876
2050
def Rejected(self, reason):
877
2051
"D-Bus signal"
878
2052
pass
879
2053
880
2054
# NeedApproval - signal
881
@dbus.service.signal(_interface, signature=u"tb")
2055
@dbus.service.signal(_interface, signature="tb")
882
2056
def NeedApproval(self, timeout, default):
883
2057
"D-Bus signal"
884
pass
885
886
## Methods
2058
return self.need_approval()
2059
2060
# Methods
887
2061
888
2062
# Approve - method
889
@dbus.service.method(_interface, in_signature=u"b")
2063
@dbus.service.method(_interface, in_signature="b")
890
2064
def Approve(self, value):
891
2065
self.approve(value)
892
2066
893
2067
# CheckedOK - method
894
2068
@dbus.service.method(_interface)
895
2069
def CheckedOK(self):
896
return self.checked_ok()
897
2070
self.checked_ok()
2071
898
2072
# Enable - method
2073
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
899
2074
@dbus.service.method(_interface)
900
2075
def Enable(self):
901
2076
"D-Bus method"
902
2077
self.enable()
903
2078
904
2079
# StartChecker - method
2080
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
905
2081
@dbus.service.method(_interface)
906
2082
def StartChecker(self):
907
2083
"D-Bus method"
908
2084
self.start_checker()
909
2085
910
2086
# Disable - method
2087
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
911
2088
@dbus.service.method(_interface)
912
2089
def Disable(self):
913
2090
"D-Bus method"
914
2091
self.disable()
915
2092
916
2093
# StopChecker - method
2094
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
917
2095
@dbus.service.method(_interface)
918
2096
def StopChecker(self):
919
2097
self.stop_checker()
920
921
## Properties
922
2098
2099
# Properties
2100
923
2101
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
2102
@dbus_service_property(_interface, signature="b", access="read")
925
2103
def ApprovalPending_dbus_property(self):
926
2104
return dbus.Boolean(bool(self.approvals_pending))
927
2105
928
2106
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
2107
@dbus_service_property(_interface,
2108
signature="b",
2109
access="readwrite")
931
2110
def ApprovedByDefault_dbus_property(self, value=None):
932
2111
if value is None: # get
933
2112
return dbus.Boolean(self.approved_by_default)
934
2113
self.approved_by_default = bool(value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
938
2114
939
2115
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
2116
@dbus_service_property(_interface,
2117
signature="t",
2118
access="readwrite")
942
2119
def ApprovalDelay_dbus_property(self, value=None):
943
2120
if value is None: # get
944
return dbus.UInt64(self.approval_delay_milliseconds())
2121
return dbus.UInt64(self.approval_delay.total_seconds()
2122
* 1000)
945
2123
self.approval_delay = datetime.timedelta(0, 0, 0, value)
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
949
2124
950
2125
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
2126
@dbus_service_property(_interface,
2127
signature="t",
2128
access="readwrite")
953
2129
def ApprovalDuration_dbus_property(self, value=None):
954
2130
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
956
self.approval_duration))
2131
return dbus.UInt64(self.approval_duration.total_seconds()
2132
* 1000)
957
2133
self.approval_duration = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
961
2134
962
2135
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
2136
@dbus_annotations(
2137
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2138
@dbus_service_property(_interface, signature="s", access="read")
964
2139
def Name_dbus_property(self):
965
2140
return dbus.String(self.name)
966
2141
2142
# KeyID - property
2143
@dbus_annotations(
2144
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2145
@dbus_service_property(_interface, signature="s", access="read")
2146
def KeyID_dbus_property(self):
2147
return dbus.String(self.key_id)
2148
967
2149
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
2150
@dbus_annotations(
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2152
@dbus_service_property(_interface, signature="s", access="read")
969
2153
def Fingerprint_dbus_property(self):
970
2154
return dbus.String(self.fingerprint)
971
2155
972
2156
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
2157
@dbus_service_property(_interface,
2158
signature="s",
2159
access="readwrite")
975
2160
def Host_dbus_property(self, value=None):
976
2161
if value is None: # get
977
2162
return dbus.String(self.host)
978
self.host = value
979
# Emit D-Bus signal
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
982
2163
self.host = str(value)
2164
983
2165
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
2166
@dbus_annotations(
2167
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2168
@dbus_service_property(_interface, signature="s", access="read")
985
2169
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
987
2170
return datetime_to_dbus(self.created)
2171
988
2172
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
2173
@dbus_service_property(_interface, signature="s", access="read")
990
2174
def LastEnabled_dbus_property(self):
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
994
2175
return datetime_to_dbus(self.last_enabled)
2176
995
2177
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
2178
@dbus_service_property(_interface,
2179
signature="b",
2180
access="readwrite")
998
2181
def Enabled_dbus_property(self, value=None):
999
2182
if value is None: # get
1000
2183
return dbus.Boolean(self.enabled)
1002
2185
self.enable()
1003
2186
else:
1004
2187
self.disable()
1005
2188
1006
2189
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
2190
@dbus_service_property(_interface,
2191
signature="s",
2192
access="readwrite")
1009
2193
def LastCheckedOK_dbus_property(self, value=None):
1010
2194
if value is not None:
1011
2195
self.checked_ok()
1012
2196
return
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1016
.last_checked_ok))
1017
2197
return datetime_to_dbus(self.last_checked_ok)
2198
2199
# LastCheckerStatus - property
2200
@dbus_service_property(_interface, signature="n", access="read")
2201
def LastCheckerStatus_dbus_property(self):
2202
return dbus.Int16(self.last_checker_status)
2203
2204
# Expires - property
2205
@dbus_service_property(_interface, signature="s", access="read")
2206
def Expires_dbus_property(self):
2207
return datetime_to_dbus(self.expires)
2208
2209
# LastApprovalRequest - property
2210
@dbus_service_property(_interface, signature="s", access="read")
2211
def LastApprovalRequest_dbus_property(self):
2212
return datetime_to_dbus(self.last_approval_request)
2213
1018
2214
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
2215
@dbus_service_property(_interface,
2216
signature="t",
2217
access="readwrite")
1021
2218
def Timeout_dbus_property(self, value=None):
1022
2219
if value is None: # get
1023
return dbus.UInt64(self.timeout_milliseconds())
2220
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2221
old_timeout = self.timeout
1024
2222
self.timeout = datetime.timedelta(0, 0, 0, value)
1025
# Emit D-Bus signal
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1029
return
1030
# Reschedule timeout
1031
gobject.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1035
.last_checked_ok
1036
+ self.timeout)
1037
- datetime.datetime
1038
.utcnow()))
1039
if time_to_die <= 0:
1040
# The timeout has passed
1041
self.disable()
1042
else:
1043
self.disable_initiator_tag = (gobject.timeout_add
1044
(time_to_die, self.disable))
1045
2223
# Reschedule disabling
2224
if self.enabled:
2225
now = datetime.datetime.utcnow()
2226
self.expires += self.timeout - old_timeout
2227
if self.expires <= now:
2228
# The timeout has passed
2229
self.disable()
2230
else:
2231
if (getattr(self, "disable_initiator_tag", None)
2232
is None):
2233
return
2234
GLib.source_remove(self.disable_initiator_tag)
2235
self.disable_initiator_tag = GLib.timeout_add(
2236
int((self.expires - now).total_seconds() * 1000),
2237
self.disable)
2238
2239
# ExtendedTimeout - property
2240
@dbus_service_property(_interface,
2241
signature="t",
2242
access="readwrite")
2243
def ExtendedTimeout_dbus_property(self, value=None):
2244
if value is None: # get
2245
return dbus.UInt64(self.extended_timeout.total_seconds()
2246
* 1000)
2247
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2248
1046
2249
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
2250
@dbus_service_property(_interface,
2251
signature="t",
2252
access="readwrite")
1049
2253
def Interval_dbus_property(self, value=None):
1050
2254
if value is None: # get
1051
return dbus.UInt64(self.interval_milliseconds())
2255
return dbus.UInt64(self.interval.total_seconds() * 1000)
1052
2256
self.interval = datetime.timedelta(0, 0, 0, value)
1053
# Emit D-Bus signal
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
2257
if getattr(self, "checker_initiator_tag", None) is None:
1057
2258
return
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
2259
if self.enabled:
2260
# Reschedule checker run
2261
GLib.source_remove(self.checker_initiator_tag)
2262
self.checker_initiator_tag = GLib.timeout_add(
2263
value, self.start_checker)
2264
self.start_checker() # Start one now, too
1063
2265
1064
2266
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
2267
@dbus_service_property(_interface,
2268
signature="s",
2269
access="readwrite")
1067
2270
def Checker_dbus_property(self, value=None):
1068
2271
if value is None: # get
1069
2272
return dbus.String(self.checker_command)
1070
self.checker_command = value
1071
# Emit D-Bus signal
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1074
variant_level=1))
1075
2273
self.checker_command = str(value)
2274
1076
2275
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
2276
@dbus_service_property(_interface,
2277
signature="b",
2278
access="readwrite")
1079
2279
def CheckerRunning_dbus_property(self, value=None):
1080
2280
if value is None: # get
1081
2281
return dbus.Boolean(self.checker is not None)
1083
2283
self.start_checker()
1084
2284
else:
1085
2285
self.stop_checker()
1086
2286
1087
2287
# ObjectPath - property
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
2288
@dbus_annotations(
2289
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2290
"org.freedesktop.DBus.Deprecated": "true"})
2291
@dbus_service_property(_interface, signature="o", access="read")
1089
2292
def ObjectPath_dbus_property(self):
1090
return self.dbus_object_path # is already a dbus.ObjectPath
1091
2293
return self.dbus_object_path # is already a dbus.ObjectPath
2294
1092
2295
# Secret = property
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
2296
@dbus_annotations(
2297
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2298
"invalidates"})
2299
@dbus_service_property(_interface,
2300
signature="ay",
2301
access="write",
2302
byte_arrays=True)
1095
2303
def Secret_dbus_property(self, value):
1096
self.secret = str(value)
1097
2304
self.secret = bytes(value)
2305
1098
2306
del _interface
1099
2307
1100
2308
1101
class ProxyClient(object):
1102
def __init__(self, child_pipe, fpr, address):
2309
class ProxyClient:
2310
def __init__(self, child_pipe, key_id, fpr, address):
1103
2311
self._pipe = child_pipe
1104
self._pipe.send(('init', fpr, address))
2312
self._pipe.send(("init", key_id, fpr, address))
1105
2313
if not self._pipe.recv():
1106
raise KeyError()
2314
raise KeyError(key_id or fpr)
1107
2315
1108
2316
def __getattribute__(self, name):
1109
if(name == '_pipe'):
2317
if name == "_pipe":
1110
2318
return super(ProxyClient, self).__getattribute__(name)
1111
self._pipe.send(('getattr', name))
2319
self._pipe.send(("getattr", name))
1112
2320
data = self._pipe.recv()
1113
if data[0] == 'data':
2321
if data[0] == "data":
1114
2322
return data[1]
1115
if data[0] == 'function':
2323
if data[0] == "function":
2324
1116
2325
def func(*args, **kwargs):
1117
self._pipe.send(('funcall', name, args, kwargs))
2326
self._pipe.send(("funcall", name, args, kwargs))
1118
2327
return self._pipe.recv()[1]
2328
1119
2329
return func
1120
2330
1121
2331
def __setattr__(self, name, value):
1122
if(name == '_pipe'):
2332
if name == "_pipe":
1123
2333
return super(ProxyClient, self).__setattr__(name, value)
1124
self._pipe.send(('setattr', name, value))
2334
self._pipe.send(("setattr", name, value))
1125
2335
1126
2336
1127
2337
class ClientHandler(socketserver.BaseRequestHandler, object):
1128
2338
"""A class to handle client connections.
1129
2339
1130
2340
Instantiated once for each connection to handle it.
1131
2341
Note: This will run in its own forked process."""
1132
2342
1133
2343
def handle(self):
1134
2344
with contextlib.closing(self.server.child_pipe) as child_pipe:
1135
logger.info(u"TCP connection from: %s",
1136
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
1138
self.server.child_pipe.fileno())
1139
1140
session = (gnutls.connection
1141
.ClientSession(self.request,
1142
gnutls.connection
1143
.X509Credentials()))
1144
1145
# Note: gnutls.connection.X509Credentials is really a
1146
# generic GnuTLS certificate credentials object so long as
1147
# no X.509 keys are added to it. Therefore, we can use it
1148
# here despite using OpenPGP certificates.
1149
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1153
# u"+DHE-DSS"))
2345
log.info("TCP connection from: %s",
2346
str(self.client_address))
2347
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2348
2349
session = gnutls.ClientSession(self.request)
2350
2351
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2352
# "+AES-256-CBC", "+SHA1",
2353
# "+COMP-NULL", "+CTYPE-OPENPGP",
2354
# "+DHE-DSS"))
1154
2355
# Use a fallback default, since this MUST be set.
1155
2356
priority = self.server.gnutls_priority
1156
2357
if priority is None:
1157
priority = u"NORMAL"
1158
(gnutls.library.functions
1159
.gnutls_priority_set_direct(session._c_object,
1160
priority, None))
2358
priority = "NORMAL"
2359
gnutls.priority_set_direct(session,
2360
priority.encode("utf-8"), None)
1161
2361
1162
2362
# Start communication using the Mandos protocol
1163
2363
# Get protocol number
1164
2364
line = self.request.makefile().readline()
1165
logger.debug(u"Protocol version: %r", line)
2365
log.debug("Protocol version: %r", line)
1166
2366
try:
1167
2367
if int(line.strip().split()[0]) > 1:
1168
raise RuntimeError
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
2368
raise RuntimeError(line)
2369
except (ValueError, IndexError, RuntimeError) as error:
2370
log.error("Unknown protocol version: %s", error)
1171
2371
return
1172
2372
1173
2373
# Start GnuTLS connection
1174
2374
try:
1175
2375
session.handshake()
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
2376
except gnutls.Error as error:
2377
log.warning("Handshake failed: %s", error)
1178
2378
# Do not run session.bye() here: the session is not
1179
2379
# established. Just abandon the request.
1180
2380
return
1181
logger.debug(u"Handshake succeeded")
2381
log.debug("Handshake succeeded")
1182
2382
1183
2383
approval_required = False
1184
2384
try:
1185
try:
1186
fpr = self.fingerprint(self.peer_certificate
1187
(session))
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1190
return
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1193
try:
1194
client = ProxyClient(child_pipe, fpr,
2385
if gnutls.has_rawpk:
2386
fpr = b""
2387
try:
2388
key_id = self.key_id(
2389
self.peer_certificate(session))
2390
except (TypeError, gnutls.Error) as error:
2391
log.warning("Bad certificate: %s", error)
2392
return
2393
log.debug("Key ID: %s",
2394
key_id.decode("utf-8",
2395
errors="replace"))
2396
2397
else:
2398
key_id = b""
2399
try:
2400
fpr = self.fingerprint(
2401
self.peer_certificate(session))
2402
except (TypeError, gnutls.Error) as error:
2403
log.warning("Bad certificate: %s", error)
2404
return
2405
log.debug("Fingerprint: %s", fpr)
2406
2407
try:
2408
client = ProxyClient(child_pipe, key_id, fpr,
1195
2409
self.client_address)
1196
2410
except KeyError:
1197
2411
return
1198
2412
1199
2413
if client.approval_delay:
1200
2414
delay = client.approval_delay
1201
2415
client.approvals_pending += 1
1202
2416
approval_required = True
1203
2417
1204
2418
while True:
1205
2419
if not client.enabled:
1206
logger.warning(u"Client %s is disabled",
1207
client.name)
2420
log.info("Client %s is disabled", client.name)
1208
2421
if self.server.use_dbus:
1209
2422
# Emit D-Bus signal
1210
client.Rejected("Disabled")
2423
client.Rejected("Disabled")
1211
2424
return
1212
1213
if client._approved or not client.approval_delay:
1214
#We are approved or approval is disabled
2425
2426
if client.approved or not client.approval_delay:
2427
# We are approved or approval is disabled
1215
2428
break
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
2429
elif client.approved is None:
2430
log.info("Client %s needs approval",
2431
client.name)
2432
if self.server.use_dbus:
2433
# Emit D-Bus signal
2434
client.NeedApproval(
2435
client.approval_delay.total_seconds()
2436
* 1000, client.approved_by_default)
2437
else:
2438
log.warning("Client %s was not approved",
1218
2439
client.name)
1219
2440
if self.server.use_dbus:
1220
2441
# Emit D-Bus signal
1221
client.NeedApproval(
1222
client.approval_delay_milliseconds(),
1223
client.approved_by_default)
1224
else:
1225
logger.warning(u"Client %s was not approved",
1226
client.name)
1227
if self.server.use_dbus:
1228
# Emit D-Bus signal
1229
2442
client.Rejected("Denied")
1230
2443
return
1231
1232
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
2444
2445
# wait until timeout or approved
1234
2446
time = datetime.datetime.now()
1235
2447
client.changedstate.acquire()
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2448
client.changedstate.wait(delay.total_seconds())
1237
2449
client.changedstate.release()
1238
2450
time2 = datetime.datetime.now()
1239
2451
if (time2 - time) >= delay:
1240
2452
if not client.approved_by_default:
1241
logger.warning("Client %s timed out while"
1242
" waiting for approval",
1243
client.name)
2453
log.warning("Client %s timed out while"
2454
" waiting for approval",
2455
client.name)
1244
2456
if self.server.use_dbus:
1245
2457
# Emit D-Bus signal
1246
2458
client.Rejected("Approval timed out")
1249
2461
break
1250
2462
else:
1251
2463
delay -= time2 - time
1252
1253
sent_size = 0
1254
while sent_size < len(client.secret):
1255
try:
1256
sent = session.send(client.secret[sent_size:])
1257
except (gnutls.errors.GNUTLSError), error:
1258
logger.warning("gnutls send failed")
1259
return
1260
logger.debug(u"Sent: %d, remaining: %d",
1261
sent, len(client.secret)
1262
- (sent_size + sent))
1263
sent_size += sent
1264
1265
logger.info(u"Sending secret to %s", client.name)
1266
# bump the timeout as if seen
1267
client.checked_ok()
2464
2465
try:
2466
session.send(client.secret)
2467
except gnutls.Error as error:
2468
log.warning("gnutls send failed", exc_info=error)
2469
return
2470
2471
log.info("Sending secret to %s", client.name)
2472
# bump the timeout using extended_timeout
2473
client.bump_timeout(client.extended_timeout)
1268
2474
if self.server.use_dbus:
1269
2475
# Emit D-Bus signal
1270
2476
client.GotSecret()
1271
2477
1272
2478
finally:
1273
2479
if approval_required:
1274
2480
client.approvals_pending -= 1
1275
2481
try:
1276
2482
session.bye()
1277
except (gnutls.errors.GNUTLSError), error:
1278
logger.warning("GnuTLS bye failed")
1279
2483
except gnutls.Error as error:
2484
log.warning("GnuTLS bye failed", exc_info=error)
2485
1280
2486
@staticmethod
1281
2487
def peer_certificate(session):
1282
"Return the peer's OpenPGP certificate as a bytestring"
1283
# If not an OpenPGP certificate...
1284
if (gnutls.library.functions
1285
.gnutls_certificate_type_get(session._c_object)
1286
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1287
# ...do the normal thing
1288
return session.peer_certificate
2488
"Return the peer's certificate as a bytestring"
2489
try:
2490
cert_type = gnutls.certificate_type_get2(
2491
session, gnutls.CTYPE_PEERS)
2492
except AttributeError:
2493
cert_type = gnutls.certificate_type_get(session)
2494
if gnutls.has_rawpk:
2495
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2496
else:
2497
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2498
# If not a valid certificate type...
2499
if cert_type not in valid_cert_types:
2500
log.info("Cert type %r not in %r", cert_type,
2501
valid_cert_types)
2502
# ...return invalid data
2503
return b""
1289
2504
list_size = ctypes.c_uint(1)
1290
cert_list = (gnutls.library.functions
1291
.gnutls_certificate_get_peers
1292
(session._c_object, ctypes.byref(list_size)))
2505
cert_list = (gnutls.certificate_get_peers
2506
(session, ctypes.byref(list_size)))
1293
2507
if not bool(cert_list) and list_size.value != 0:
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
2508
raise gnutls.Error("error getting peer certificate")
1296
2509
if list_size.value == 0:
1297
2510
return None
1298
2511
cert = cert_list[0]
1299
2512
return ctypes.string_at(cert.data, cert.size)
1300
2513
2514
@staticmethod
2515
def key_id(certificate):
2516
"Convert a certificate bytestring to a hexdigit key ID"
2517
# New GnuTLS "datum" with the public key
2518
datum = gnutls.datum_t(
2519
ctypes.cast(ctypes.c_char_p(certificate),
2520
ctypes.POINTER(ctypes.c_ubyte)),
2521
ctypes.c_uint(len(certificate)))
2522
# XXX all these need to be created in the gnutls "module"
2523
# New empty GnuTLS certificate
2524
pubkey = gnutls.pubkey_t()
2525
gnutls.pubkey_init(ctypes.byref(pubkey))
2526
# Import the raw public key into the certificate
2527
gnutls.pubkey_import(pubkey,
2528
ctypes.byref(datum),
2529
gnutls.X509_FMT_DER)
2530
# New buffer for the key ID
2531
buf = ctypes.create_string_buffer(32)
2532
buf_len = ctypes.c_size_t(len(buf))
2533
# Get the key ID from the raw public key into the buffer
2534
gnutls.pubkey_get_key_id(
2535
pubkey,
2536
gnutls.KEYID_USE_SHA256,
2537
ctypes.cast(ctypes.byref(buf),
2538
ctypes.POINTER(ctypes.c_ubyte)),
2539
ctypes.byref(buf_len))
2540
# Deinit the certificate
2541
gnutls.pubkey_deinit(pubkey)
2542
2543
# Convert the buffer to a Python bytestring
2544
key_id = ctypes.string_at(buf, buf_len.value)
2545
# Convert the bytestring to hexadecimal notation
2546
hex_key_id = binascii.hexlify(key_id).upper()
2547
return hex_key_id
2548
1301
2549
@staticmethod
1302
2550
def fingerprint(openpgp):
1303
2551
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1304
2552
# New GnuTLS "datum" with the OpenPGP public key
1305
datum = (gnutls.library.types
1306
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1307
ctypes.POINTER
1308
(ctypes.c_ubyte)),
1309
ctypes.c_uint(len(openpgp))))
2553
datum = gnutls.datum_t(
2554
ctypes.cast(ctypes.c_char_p(openpgp),
2555
ctypes.POINTER(ctypes.c_ubyte)),
2556
ctypes.c_uint(len(openpgp)))
1310
2557
# New empty GnuTLS certificate
1311
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1312
(gnutls.library.functions
1313
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2558
crt = gnutls.openpgp_crt_t()
2559
gnutls.openpgp_crt_init(ctypes.byref(crt))
1314
2560
# Import the OpenPGP public key into the certificate
1315
(gnutls.library.functions
1316
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1317
gnutls.library.constants
1318
.GNUTLS_OPENPGP_FMT_RAW))
2561
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2562
gnutls.OPENPGP_FMT_RAW)
1319
2563
# Verify the self signature in the key
1320
2564
crtverify = ctypes.c_uint()
1321
(gnutls.library.functions
1322
.gnutls_openpgp_crt_verify_self(crt, 0,
1323
ctypes.byref(crtverify)))
2565
gnutls.openpgp_crt_verify_self(crt, 0,
2566
ctypes.byref(crtverify))
1324
2567
if crtverify.value != 0:
1325
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1326
raise (gnutls.errors.CertificateSecurityError
1327
(u"Verify failed"))
2568
gnutls.openpgp_crt_deinit(crt)
2569
raise gnutls.CertificateSecurityError(code
2570
=crtverify.value)
1328
2571
# New buffer for the fingerprint
1329
2572
buf = ctypes.create_string_buffer(20)
1330
2573
buf_len = ctypes.c_size_t()
1331
2574
# Get the fingerprint from the certificate into the buffer
1332
(gnutls.library.functions
1333
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1334
ctypes.byref(buf_len)))
2575
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2576
ctypes.byref(buf_len))
1335
2577
# Deinit the certificate
1336
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2578
gnutls.openpgp_crt_deinit(crt)
1337
2579
# Convert the buffer to a Python bytestring
1338
2580
fpr = ctypes.string_at(buf, buf_len.value)
1339
2581
# Convert the bytestring to hexadecimal notation
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2582
hex_fpr = binascii.hexlify(fpr).upper()
1341
2583
return hex_fpr
1342
2584
1343
2585
1344
class MultiprocessingMixIn(object):
2586
class MultiprocessingMixIn:
1345
2587
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2588
1346
2589
def sub_process_main(self, request, address):
1347
2590
try:
1348
2591
self.finish_request(request, address)
1349
except:
2592
except Exception:
1350
2593
self.handle_error(request, address)
1351
2594
self.close_request(request)
1352
2595
1353
2596
def process_request(self, request, address):
1354
2597
"""Start a new process to process the request."""
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1357
1358
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2598
proc = multiprocessing.Process(target=self.sub_process_main,
2599
args=(request, address))
2600
proc.start()
2601
return proc
2602
2603
2604
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1359
2605
""" adds a pipe to the MixIn """
2606
1360
2607
def process_request(self, request, client_address):
1361
2608
"""Overrides and wraps the original process_request().
1362
2609
1363
2610
This function creates a new pipe in self.pipe
1364
2611
"""
1365
2612
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1366
2613
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
2614
proc = MultiprocessingMixIn.process_request(self, request,
2615
client_address)
1369
2616
self.child_pipe.close()
1370
self.add_pipe(parent_pipe)
2617
self.add_pipe(parent_pipe, proc)
1371
2618
1372
def add_pipe(self, parent_pipe):
2619
def add_pipe(self, parent_pipe, proc):
1373
2620
"""Dummy function; override as necessary"""
1374
pass
2621
raise NotImplementedError()
2622
1375
2623
1376
2624
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1377
socketserver.TCPServer, object):
1378
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1379
2625
socketserver.TCPServer):
2626
"""IPv6-capable TCP server. Accepts None as address and/or port
2627
1380
2628
Attributes:
1381
2629
enabled: Boolean; whether this server is activated yet
1382
2630
interface: None or a network interface name (string)
1383
2631
use_ipv6: Boolean; to use IPv6 or not
1384
2632
"""
2633
1385
2634
def __init__(self, server_address, RequestHandlerClass,
1386
interface=None, use_ipv6=True):
2635
interface=None,
2636
use_ipv6=True,
2637
socketfd=None):
2638
"""If socketfd is set, use that file descriptor instead of
2639
creating a new one with socket.socket().
2640
"""
1387
2641
self.interface = interface
1388
2642
if use_ipv6:
1389
2643
self.address_family = socket.AF_INET6
2644
if socketfd is not None:
2645
# Save the file descriptor
2646
self.socketfd = socketfd
2647
# Save the original socket.socket() function
2648
self.socket_socket = socket.socket
2649
2650
# To implement --socket, we monkey patch socket.socket.
2651
#
2652
# (When socketserver.TCPServer is a new-style class, we
2653
# could make self.socket into a property instead of monkey
2654
# patching socket.socket.)
2655
#
2656
# Create a one-time-only replacement for socket.socket()
2657
@functools.wraps(socket.socket)
2658
def socket_wrapper(*args, **kwargs):
2659
# Restore original function so subsequent calls are
2660
# not affected.
2661
socket.socket = self.socket_socket
2662
del self.socket_socket
2663
# This time only, return a new socket object from the
2664
# saved file descriptor.
2665
return socket.fromfd(self.socketfd, *args, **kwargs)
2666
# Replace socket.socket() function with wrapper
2667
socket.socket = socket_wrapper
2668
# The socketserver.TCPServer.__init__ will call
2669
# socket.socket(), which might be our replacement,
2670
# socket_wrapper(), if socketfd was set.
1390
2671
socketserver.TCPServer.__init__(self, server_address,
1391
2672
RequestHandlerClass)
2673
1392
2674
def server_bind(self):
1393
2675
"""This overrides the normal server_bind() function
1394
2676
to bind to an interface if one was specified, and also NOT to
1395
2677
bind to an address or port if they were not specified."""
2678
global SO_BINDTODEVICE
1396
2679
if self.interface is not None:
1397
2680
if SO_BINDTODEVICE is None:
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1400
self.interface)
1401
else:
1402
try:
1403
self.socket.setsockopt(socket.SOL_SOCKET,
1404
SO_BINDTODEVICE,
1405
str(self.interface
1406
+ u'\0'))
1407
except socket.error, error:
1408
if error[0] == errno.EPERM:
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1411
self.interface)
1412
elif error[0] == errno.ENOPROTOOPT:
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1415
self.interface)
1416
else:
1417
raise
2681
# Fall back to a hard-coded value which seems to be
2682
# common enough.
2683
log.warning("SO_BINDTODEVICE not found, trying 25")
2684
SO_BINDTODEVICE = 25
2685
try:
2686
self.socket.setsockopt(
2687
socket.SOL_SOCKET, SO_BINDTODEVICE,
2688
(self.interface + "\0").encode("utf-8"))
2689
except socket.error as error:
2690
if error.errno == errno.EPERM:
2691
log.error("No permission to bind to interface %s",
2692
self.interface)
2693
elif error.errno == errno.ENOPROTOOPT:
2694
log.error("SO_BINDTODEVICE not available; cannot"
2695
" bind to interface %s", self.interface)
2696
elif error.errno == errno.ENODEV:
2697
log.error("Interface %s does not exist, cannot"
2698
" bind", self.interface)
2699
else:
2700
raise
1418
2701
# Only bind(2) the socket if we really need to.
1419
2702
if self.server_address[0] or self.server_address[1]:
2703
if self.server_address[1]:
2704
self.allow_reuse_address = True
1420
2705
if not self.server_address[0]:
1421
2706
if self.address_family == socket.AF_INET6:
1422
any_address = u"::" # in6addr_any
2707
any_address = "::" # in6addr_any
1423
2708
else:
1424
any_address = socket.INADDR_ANY
2709
any_address = "0.0.0.0" # INADDR_ANY
1425
2710
self.server_address = (any_address,
1426
2711
self.server_address[1])
1427
2712
elif not self.server_address[1]:
1428
self.server_address = (self.server_address[0],
1429
0)
2713
self.server_address = (self.server_address[0], 0)
1430
2714
# if self.interface:
1431
2715
# self.server_address = (self.server_address[0],
1432
2716
# 0, # port
1438
2722
1439
2723
class MandosServer(IPv6_TCPServer):
1440
2724
"""Mandos server.
1441
2725
1442
2726
Attributes:
1443
2727
clients: set of Client objects
1444
2728
gnutls_priority GnuTLS priority string
1445
2729
use_dbus: Boolean; to emit D-Bus signals or not
1446
1447
Assumes a gobject.MainLoop event loop.
2730
2731
Assumes a GLib.MainLoop event loop.
1448
2732
"""
2733
1449
2734
def __init__(self, server_address, RequestHandlerClass,
1450
interface=None, use_ipv6=True, clients=None,
1451
gnutls_priority=None, use_dbus=True):
2735
interface=None,
2736
use_ipv6=True,
2737
clients=None,
2738
gnutls_priority=None,
2739
use_dbus=True,
2740
socketfd=None):
1452
2741
self.enabled = False
1453
2742
self.clients = clients
1454
2743
if self.clients is None:
1455
self.clients = set()
2744
self.clients = {}
1456
2745
self.use_dbus = use_dbus
1457
2746
self.gnutls_priority = gnutls_priority
1458
2747
IPv6_TCPServer.__init__(self, server_address,
1459
2748
RequestHandlerClass,
1460
interface = interface,
1461
use_ipv6 = use_ipv6)
2749
interface=interface,
2750
use_ipv6=use_ipv6,
2751
socketfd=socketfd)
2752
1462
2753
def server_activate(self):
1463
2754
if self.enabled:
1464
2755
return socketserver.TCPServer.server_activate(self)
2756
1465
2757
def enable(self):
1466
2758
self.enabled = True
1467
def add_pipe(self, parent_pipe):
2759
2760
def add_pipe(self, parent_pipe, proc):
1468
2761
# Call "handle_ipc" for both data and EOF events
1469
gobject.io_add_watch(parent_pipe.fileno(),
1470
gobject.IO_IN | gobject.IO_HUP,
1471
functools.partial(self.handle_ipc,
1472
parent_pipe = parent_pipe))
1473
1474
def handle_ipc(self, source, condition, parent_pipe=None,
2762
GLib.io_add_watch(
2763
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2764
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2765
functools.partial(self.handle_ipc,
2766
parent_pipe=parent_pipe,
2767
proc=proc))
2768
2769
def handle_ipc(self, source, condition,
2770
parent_pipe=None,
2771
proc=None,
1475
2772
client_object=None):
1476
condition_names = {
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1479
# blocking).
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1483
# broken, usually for pipes and
1484
# sockets).
1485
}
1486
conditions_string = ' | '.join(name
1487
for cond, name in
1488
condition_names.iteritems()
1489
if cond & condition)
1490
# error or the other end of multiprocessing.Pipe has closed
1491
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2773
# error, or the other end of multiprocessing.Pipe has closed
2774
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2775
# Wait for other process to exit
2776
proc.join()
1492
2777
return False
1493
2778
1494
2779
# Read a request from the child
1495
2780
request = parent_pipe.recv()
1496
2781
command = request[0]
1497
1498
if command == 'init':
1499
fpr = request[1]
1500
address = request[2]
1501
1502
for c in self.clients:
1503
if c.fingerprint == fpr:
2782
2783
if command == "init":
2784
key_id = request[1].decode("ascii")
2785
fpr = request[2].decode("ascii")
2786
address = request[3]
2787
2788
for c in self.clients.values():
2789
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2790
"27AE41E4649B934CA495991B7852B855"):
2791
continue
2792
if key_id and c.key_id == key_id:
2793
client = c
2794
break
2795
if fpr and c.fingerprint == fpr:
1504
2796
client = c
1505
2797
break
1506
2798
else:
1507
logger.warning(u"Client not found for fingerprint: %s, ad"
1508
u"dress: %s", fpr, address)
2799
log.info("Client not found for key ID: %s, address:"
2800
" %s", key_id or fpr, address)
1509
2801
if self.use_dbus:
1510
2802
# Emit D-Bus signal
1511
mandos_dbus_service.ClientNotFound(fpr, address)
2803
mandos_dbus_service.ClientNotFound(key_id or fpr,
2804
address[0])
1512
2805
parent_pipe.send(False)
1513
2806
return False
1514
1515
gobject.io_add_watch(parent_pipe.fileno(),
1516
gobject.IO_IN | gobject.IO_HUP,
1517
functools.partial(self.handle_ipc,
1518
parent_pipe = parent_pipe,
1519
client_object = client))
2807
2808
GLib.io_add_watch(
2809
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2810
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2811
functools.partial(self.handle_ipc,
2812
parent_pipe=parent_pipe,
2813
proc=proc,
2814
client_object=client))
1520
2815
parent_pipe.send(True)
1521
# remove the old hook in favor of the new above hook on same fileno
2816
# remove the old hook in favor of the new above hook on
2817
# same fileno
1522
2818
return False
1523
if command == 'funcall':
2819
if command == "funcall":
1524
2820
funcname = request[1]
1525
2821
args = request[2]
1526
2822
kwargs = request[3]
1527
1528
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1529
1530
if command == 'getattr':
2823
2824
parent_pipe.send(("data", getattr(client_object,
2825
funcname)(*args,
2826
**kwargs)))
2827
2828
if command == "getattr":
1531
2829
attrname = request[1]
1532
if callable(client_object.__getattribute__(attrname)):
1533
parent_pipe.send(('function',))
2830
if isinstance(client_object.__getattribute__(attrname),
2831
collections.abc.Callable):
2832
parent_pipe.send(("function", ))
1534
2833
else:
1535
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1536
1537
if command == 'setattr':
2834
parent_pipe.send((
2835
"data", client_object.__getattribute__(attrname)))
2836
2837
if command == "setattr":
1538
2838
attrname = request[1]
1539
2839
value = request[2]
1540
2840
setattr(client_object, attrname, value)
1542
2842
return True
1543
2843
1544
2844
2845
def rfc3339_duration_to_delta(duration):
2846
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2847
2848
>>> timedelta = datetime.timedelta
2849
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2850
True
2851
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2852
True
2853
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2854
True
2855
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2856
True
2857
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2858
True
2859
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2860
True
2861
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2862
True
2863
>>> del timedelta
2864
"""
2865
2866
# Parsing an RFC 3339 duration with regular expressions is not
2867
# possible - there would have to be multiple places for the same
2868
# values, like seconds. The current code, while more esoteric, is
2869
# cleaner without depending on a parsing library. If Python had a
2870
# built-in library for parsing we would use it, but we'd like to
2871
# avoid excessive use of external libraries.
2872
2873
# New type for defining tokens, syntax, and semantics all-in-one
2874
Token = collections.namedtuple("Token", (
2875
"regexp", # To match token; if "value" is not None, must have
2876
# a "group" containing digits
2877
"value", # datetime.timedelta or None
2878
"followers")) # Tokens valid after this token
2879
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2880
# the "duration" ABNF definition in RFC 3339, Appendix A.
2881
token_end = Token(re.compile(r"$"), None, frozenset())
2882
token_second = Token(re.compile(r"(\d+)S"),
2883
datetime.timedelta(seconds=1),
2884
frozenset((token_end, )))
2885
token_minute = Token(re.compile(r"(\d+)M"),
2886
datetime.timedelta(minutes=1),
2887
frozenset((token_second, token_end)))
2888
token_hour = Token(re.compile(r"(\d+)H"),
2889
datetime.timedelta(hours=1),
2890
frozenset((token_minute, token_end)))
2891
token_time = Token(re.compile(r"T"),
2892
None,
2893
frozenset((token_hour, token_minute,
2894
token_second)))
2895
token_day = Token(re.compile(r"(\d+)D"),
2896
datetime.timedelta(days=1),
2897
frozenset((token_time, token_end)))
2898
token_month = Token(re.compile(r"(\d+)M"),
2899
datetime.timedelta(weeks=4),
2900
frozenset((token_day, token_end)))
2901
token_year = Token(re.compile(r"(\d+)Y"),
2902
datetime.timedelta(weeks=52),
2903
frozenset((token_month, token_end)))
2904
token_week = Token(re.compile(r"(\d+)W"),
2905
datetime.timedelta(weeks=1),
2906
frozenset((token_end, )))
2907
token_duration = Token(re.compile(r"P"), None,
2908
frozenset((token_year, token_month,
2909
token_day, token_time,
2910
token_week)))
2911
# Define starting values:
2912
# Value so far
2913
value = datetime.timedelta()
2914
found_token = None
2915
# Following valid tokens
2916
followers = frozenset((token_duration, ))
2917
# String left to parse
2918
s = duration
2919
# Loop until end token is found
2920
while found_token is not token_end:
2921
# Search for any currently valid tokens
2922
for token in followers:
2923
match = token.regexp.match(s)
2924
if match is not None:
2925
# Token found
2926
if token.value is not None:
2927
# Value found, parse digits
2928
factor = int(match.group(1), 10)
2929
# Add to value so far
2930
value += factor * token.value
2931
# Strip token from string
2932
s = token.regexp.sub("", s, 1)
2933
# Go to found token
2934
found_token = token
2935
# Set valid next tokens
2936
followers = found_token.followers
2937
break
2938
else:
2939
# No currently valid tokens were found
2940
raise ValueError("Invalid RFC 3339 duration: {!r}"
2941
.format(duration))
2942
# End token found
2943
return value
2944
2945
1545
2946
def string_to_delta(interval):
1546
2947
"""Parse a string and return a datetime.timedelta
1547
1548
>>> string_to_delta(u'7d')
1549
datetime.timedelta(7)
1550
>>> string_to_delta(u'60s')
1551
datetime.timedelta(0, 60)
1552
>>> string_to_delta(u'60m')
1553
datetime.timedelta(0, 3600)
1554
>>> string_to_delta(u'24h')
1555
datetime.timedelta(1)
1556
>>> string_to_delta(u'1w')
1557
datetime.timedelta(7)
1558
>>> string_to_delta(u'5m 30s')
1559
datetime.timedelta(0, 330)
2948
2949
>>> string_to_delta("7d") == datetime.timedelta(7)
2950
True
2951
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2952
True
2953
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2954
True
2955
>>> string_to_delta("24h") == datetime.timedelta(1)
2956
True
2957
>>> string_to_delta("1w") == datetime.timedelta(7)
2958
True
2959
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2960
True
1560
2961
"""
2962
2963
try:
2964
return rfc3339_duration_to_delta(interval)
2965
except ValueError:
2966
pass
2967
1561
2968
timevalue = datetime.timedelta(0)
1562
2969
for s in interval.split():
1563
2970
try:
1564
suffix = unicode(s[-1])
2971
suffix = s[-1]
1565
2972
value = int(s[:-1])
1566
if suffix == u"d":
2973
if suffix == "d":
1567
2974
delta = datetime.timedelta(value)
1568
elif suffix == u"s":
2975
elif suffix == "s":
1569
2976
delta = datetime.timedelta(0, value)
1570
elif suffix == u"m":
2977
elif suffix == "m":
1571
2978
delta = datetime.timedelta(0, 0, 0, 0, value)
1572
elif suffix == u"h":
2979
elif suffix == "h":
1573
2980
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1574
elif suffix == u"w":
2981
elif suffix == "w":
1575
2982
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1576
2983
else:
1577
raise ValueError(u"Unknown suffix %r" % suffix)
1578
except (ValueError, IndexError), e:
1579
raise ValueError(e.message)
2984
raise ValueError("Unknown suffix {!r}".format(suffix))
2985
except IndexError as e:
2986
raise ValueError(*(e.args))
1580
2987
timevalue += delta
1581
2988
return timevalue
1582
2989
1583
2990
1584
def if_nametoindex(interface):
1585
"""Call the C function if_nametoindex(), or equivalent
1586
1587
Note: This function cannot accept a unicode string."""
1588
global if_nametoindex
1589
try:
1590
if_nametoindex = (ctypes.cdll.LoadLibrary
1591
(ctypes.util.find_library(u"c"))
1592
.if_nametoindex)
1593
except (OSError, AttributeError):
1594
logger.warning(u"Doing if_nametoindex the hard way")
1595
def if_nametoindex(interface):
1596
"Get an interface index the hard way, i.e. using fcntl()"
1597
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1598
with contextlib.closing(socket.socket()) as s:
1599
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1600
struct.pack(str(u"16s16x"),
1601
interface))
1602
interface_index = struct.unpack(str(u"I"),
1603
ifreq[16:20])[0]
1604
return interface_index
1605
return if_nametoindex(interface)
1606
1607
1608
def daemon(nochdir = False, noclose = False):
2991
def daemon(nochdir=False, noclose=False):
1609
2992
"""See daemon(3). Standard BSD Unix function.
1610
2993
1611
2994
This should really exist as os.daemon, but it doesn't (yet)."""
1612
2995
if os.fork():
1613
2996
sys.exit()
1614
2997
os.setsid()
1615
2998
if not nochdir:
1616
os.chdir(u"/")
2999
os.chdir("/")
1617
3000
if os.fork():
1618
3001
sys.exit()
1619
3002
if not noclose:
1620
3003
# Close all standard open file descriptors
1621
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3004
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1622
3005
if not stat.S_ISCHR(os.fstat(null).st_mode):
1623
3006
raise OSError(errno.ENODEV,
1624
u"%s not a character device"
1625
% os.path.devnull)
3007
"{} not a character device"
3008
.format(os.devnull))
1626
3009
os.dup2(null, sys.stdin.fileno())
1627
3010
os.dup2(null, sys.stdout.fileno())
1628
3011
os.dup2(null, sys.stderr.fileno())
1631
3014
1632
3015
1633
3016
def main():
1634
3017
1635
3018
##################################################################
1636
3019
# Parsing of options, both command line and config file
1637
1638
parser = optparse.OptionParser(version = "%%prog %s" % version)
1639
parser.add_option("-i", u"--interface", type=u"string",
1640
metavar="IF", help=u"Bind to interface IF")
1641
parser.add_option("-a", u"--address", type=u"string",
1642
help=u"Address to listen for requests on")
1643
parser.add_option("-p", u"--port", type=u"int",
1644
help=u"Port number to receive requests on")
1645
parser.add_option("--check", action=u"store_true",
1646
help=u"Run self-test")
1647
parser.add_option("--debug", action=u"store_true",
1648
help=u"Debug mode; run in foreground and log to"
1649
u" terminal")
1650
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1651
help=u"Debug level for stdout output")
1652
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1653
u" priority string (see GnuTLS documentation)")
1654
parser.add_option("--servicename", type=u"string",
1655
metavar=u"NAME", help=u"Zeroconf service name")
1656
parser.add_option("--configdir", type=u"string",
1657
default=u"/etc/mandos", metavar=u"DIR",
1658
help=u"Directory to search for configuration"
1659
u" files")
1660
parser.add_option("--no-dbus", action=u"store_false",
1661
dest=u"use_dbus", help=u"Do not provide D-Bus"
1662
u" system bus interface")
1663
parser.add_option("--no-ipv6", action=u"store_false",
1664
dest=u"use_ipv6", help=u"Do not use IPv6")
1665
options = parser.parse_args()[0]
1666
1667
if options.check:
1668
import doctest
1669
doctest.testmod()
1670
sys.exit()
1671
3020
3021
parser = argparse.ArgumentParser()
3022
parser.add_argument("-v", "--version", action="version",
3023
version="%(prog)s {}".format(version),
3024
help="show version number and exit")
3025
parser.add_argument("-i", "--interface", metavar="IF",
3026
help="Bind to interface IF")
3027
parser.add_argument("-a", "--address",
3028
help="Address to listen for requests on")
3029
parser.add_argument("-p", "--port", type=int,
3030
help="Port number to receive requests on")
3031
parser.add_argument("--check", action="store_true",
3032
help="Run self-test")
3033
parser.add_argument("--debug", action="store_true",
3034
help="Debug mode; run in foreground and log"
3035
" to terminal", default=None)
3036
parser.add_argument("--debuglevel", metavar="LEVEL",
3037
help="Debug level for stdout output")
3038
parser.add_argument("--priority", help="GnuTLS"
3039
" priority string (see GnuTLS documentation)")
3040
parser.add_argument("--servicename",
3041
metavar="NAME", help="Zeroconf service name")
3042
parser.add_argument("--configdir",
3043
default="/etc/mandos", metavar="DIR",
3044
help="Directory to search for configuration"
3045
" files")
3046
parser.add_argument("--no-dbus", action="store_false",
3047
dest="use_dbus", help="Do not provide D-Bus"
3048
" system bus interface", default=None)
3049
parser.add_argument("--no-ipv6", action="store_false",
3050
dest="use_ipv6", help="Do not use IPv6",
3051
default=None)
3052
parser.add_argument("--no-restore", action="store_false",
3053
dest="restore", help="Do not restore stored"
3054
" state", default=None)
3055
parser.add_argument("--socket", type=int,
3056
help="Specify a file descriptor to a network"
3057
" socket to use instead of creating one")
3058
parser.add_argument("--statedir", metavar="DIR",
3059
help="Directory to save/restore state in")
3060
parser.add_argument("--foreground", action="store_true",
3061
help="Run in foreground", default=None)
3062
parser.add_argument("--no-zeroconf", action="store_false",
3063
dest="zeroconf", help="Do not use Zeroconf",
3064
default=None)
3065
3066
options = parser.parse_args()
3067
1672
3068
# Default values for config file for server-global settings
1673
server_defaults = { u"interface": u"",
1674
u"address": u"",
1675
u"port": u"",
1676
u"debug": u"False",
1677
u"priority":
1678
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1679
u"servicename": u"Mandos",
1680
u"use_dbus": u"True",
1681
u"use_ipv6": u"True",
1682
u"debuglevel": u"",
1683
}
1684
3069
if gnutls.has_rawpk:
3070
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3071
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3072
else:
3073
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3074
":+SIGN-DSA-SHA256")
3075
server_defaults = {"interface": "",
3076
"address": "",
3077
"port": "",
3078
"debug": "False",
3079
"priority": priority,
3080
"servicename": "Mandos",
3081
"use_dbus": "True",
3082
"use_ipv6": "True",
3083
"debuglevel": "",
3084
"restore": "True",
3085
"socket": "",
3086
"statedir": "/var/lib/mandos",
3087
"foreground": "False",
3088
"zeroconf": "True",
3089
}
3090
del priority
3091
1685
3092
# Parse config file for server-global settings
1686
server_config = configparser.SafeConfigParser(server_defaults)
3093
server_config = configparser.ConfigParser(server_defaults)
1687
3094
del server_defaults
1688
server_config.read(os.path.join(options.configdir,
1689
u"mandos.conf"))
1690
# Convert the SafeConfigParser object to a dict
3095
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3096
# Convert the ConfigParser object to a dict
1691
3097
server_settings = server_config.defaults()
1692
3098
# Use the appropriate methods on the non-string config options
1693
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1694
server_settings[option] = server_config.getboolean(u"DEFAULT",
3099
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3100
"foreground", "zeroconf"):
3101
server_settings[option] = server_config.getboolean("DEFAULT",
1695
3102
option)
1696
3103
if server_settings["port"]:
1697
server_settings["port"] = server_config.getint(u"DEFAULT",
1698
u"port")
3104
server_settings["port"] = server_config.getint("DEFAULT",
3105
"port")
3106
if server_settings["socket"]:
3107
server_settings["socket"] = server_config.getint("DEFAULT",
3108
"socket")
3109
# Later, stdin will, and stdout and stderr might, be dup'ed
3110
# over with an opened os.devnull. But we don't want this to
3111
# happen with a supplied network socket.
3112
while 0 <= server_settings["socket"] <= 2:
3113
server_settings["socket"] = os.dup(server_settings
3114
["socket"])
3115
os.set_inheritable(server_settings["socket"], False)
1699
3116
del server_config
1700
3117
1701
3118
# Override the settings from the config file with command line
1702
3119
# options, if set.
1703
for option in (u"interface", u"address", u"port", u"debug",
1704
u"priority", u"servicename", u"configdir",
1705
u"use_dbus", u"use_ipv6", u"debuglevel"):
3120
for option in ("interface", "address", "port", "debug",
3121
"priority", "servicename", "configdir", "use_dbus",
3122
"use_ipv6", "debuglevel", "restore", "statedir",
3123
"socket", "foreground", "zeroconf"):
1706
3124
value = getattr(options, option)
1707
3125
if value is not None:
1708
3126
server_settings[option] = value
1709
3127
del options
1710
3128
# Force all strings to be unicode
1711
3129
for option in server_settings.keys():
1712
if type(server_settings[option]) is str:
1713
server_settings[option] = unicode(server_settings[option])
3130
if isinstance(server_settings[option], bytes):
3131
server_settings[option] = (server_settings[option]
3132
.decode("utf-8"))
3133
# Force all boolean options to be boolean
3134
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3135
"foreground", "zeroconf"):
3136
server_settings[option] = bool(server_settings[option])
3137
# Debug implies foreground
3138
if server_settings["debug"]:
3139
server_settings["foreground"] = True
1714
3140
# Now we have our good server settings in "server_settings"
1715
3141
1716
3142
##################################################################
1717
3143
3144
if (not server_settings["zeroconf"]
3145
and not (server_settings["port"]
3146
or server_settings["socket"] != "")):
3147
parser.error("Needs port or socket to work without Zeroconf")
3148
1718
3149
# For convenience
1719
debug = server_settings[u"debug"]
1720
debuglevel = server_settings[u"debuglevel"]
1721
use_dbus = server_settings[u"use_dbus"]
1722
use_ipv6 = server_settings[u"use_ipv6"]
1723
1724
if server_settings[u"servicename"] != u"Mandos":
1725
syslogger.setFormatter(logging.Formatter
1726
(u'Mandos (%s) [%%(process)d]:'
1727
u' %%(levelname)s: %%(message)s'
1728
% server_settings[u"servicename"]))
1729
3150
debug = server_settings["debug"]
3151
debuglevel = server_settings["debuglevel"]
3152
use_dbus = server_settings["use_dbus"]
3153
use_ipv6 = server_settings["use_ipv6"]
3154
stored_state_path = os.path.join(server_settings["statedir"],
3155
stored_state_file)
3156
foreground = server_settings["foreground"]
3157
zeroconf = server_settings["zeroconf"]
3158
3159
if debug:
3160
initlogger(debug, logging.DEBUG)
3161
else:
3162
if not debuglevel:
3163
initlogger(debug)
3164
else:
3165
level = getattr(logging, debuglevel.upper())
3166
initlogger(debug, level)
3167
3168
if server_settings["servicename"] != "Mandos":
3169
syslogger.setFormatter(
3170
logging.Formatter("Mandos ({}) [%(process)d]:"
3171
" %(levelname)s: %(message)s".format(
3172
server_settings["servicename"])))
3173
1730
3174
# Parse config file with clients
1731
client_defaults = { u"timeout": u"1h",
1732
u"interval": u"5m",
1733
u"checker": u"fping -q -- %%(host)s",
1734
u"host": u"",
1735
u"approval_delay": u"0s",
1736
u"approval_duration": u"1s",
1737
}
1738
client_config = configparser.SafeConfigParser(client_defaults)
1739
client_config.read(os.path.join(server_settings[u"configdir"],
1740
u"clients.conf"))
1741
3175
client_config = configparser.ConfigParser(Client.client_defaults)
3176
client_config.read(os.path.join(server_settings["configdir"],
3177
"clients.conf"))
3178
1742
3179
global mandos_dbus_service
1743
3180
mandos_dbus_service = None
1744
1745
tcp_server = MandosServer((server_settings[u"address"],
1746
server_settings[u"port"]),
1747
ClientHandler,
1748
interface=(server_settings[u"interface"]
1749
or None),
1750
use_ipv6=use_ipv6,
1751
gnutls_priority=
1752
server_settings[u"priority"],
1753
use_dbus=use_dbus)
1754
pidfilename = u"/var/run/mandos.pid"
1755
try:
1756
pidfile = open(pidfilename, u"w")
1757
except IOError:
1758
logger.error(u"Could not open file %r", pidfilename)
1759
1760
try:
1761
uid = pwd.getpwnam(u"_mandos").pw_uid
1762
gid = pwd.getpwnam(u"_mandos").pw_gid
1763
except KeyError:
1764
try:
1765
uid = pwd.getpwnam(u"mandos").pw_uid
1766
gid = pwd.getpwnam(u"mandos").pw_gid
3181
3182
socketfd = None
3183
if server_settings["socket"] != "":
3184
socketfd = server_settings["socket"]
3185
tcp_server = MandosServer(
3186
(server_settings["address"], server_settings["port"]),
3187
ClientHandler,
3188
interface=(server_settings["interface"] or None),
3189
use_ipv6=use_ipv6,
3190
gnutls_priority=server_settings["priority"],
3191
use_dbus=use_dbus,
3192
socketfd=socketfd)
3193
if not foreground:
3194
pidfilename = "/run/mandos.pid"
3195
if not os.path.isdir("/run/."):
3196
pidfilename = "/var/run/mandos.pid"
3197
pidfile = None
3198
try:
3199
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3200
except IOError as e:
3201
log.error("Could not open file %r", pidfilename,
3202
exc_info=e)
3203
3204
for name, group in (("_mandos", "_mandos"),
3205
("mandos", "mandos"),
3206
("nobody", "nogroup")):
3207
try:
3208
uid = pwd.getpwnam(name).pw_uid
3209
gid = pwd.getpwnam(group).pw_gid
3210
break
1767
3211
except KeyError:
1768
try:
1769
uid = pwd.getpwnam(u"nobody").pw_uid
1770
gid = pwd.getpwnam(u"nobody").pw_gid
1771
except KeyError:
1772
uid = 65534
1773
gid = 65534
3212
continue
3213
else:
3214
uid = 65534
3215
gid = 65534
1774
3216
try:
1775
3217
os.setgid(gid)
1776
3218
os.setuid(uid)
1777
except OSError, error:
1778
if error[0] != errno.EPERM:
1779
raise error
1780
1781
if not debug and not debuglevel:
1782
syslogger.setLevel(logging.WARNING)
1783
console.setLevel(logging.WARNING)
1784
if debuglevel:
1785
level = getattr(logging, debuglevel.upper())
1786
syslogger.setLevel(level)
1787
console.setLevel(level)
3219
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3220
except OSError as error:
3221
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3222
os.strerror(error.errno))
3223
if error.errno != errno.EPERM:
3224
raise
1788
3225
1789
3226
if debug:
1790
3227
# Enable all possible GnuTLS debugging
1791
3228
1792
3229
# "Use a log level over 10 to enable all debugging options."
1793
3230
# - GnuTLS manual
1794
gnutls.library.functions.gnutls_global_set_log_level(11)
1795
1796
@gnutls.library.types.gnutls_log_func
3231
gnutls.global_set_log_level(11)
3232
3233
@gnutls.log_func
1797
3234
def debug_gnutls(level, string):
1798
logger.debug(u"GnuTLS: %s", string[:-1])
1799
1800
(gnutls.library.functions
1801
.gnutls_global_set_log_function(debug_gnutls))
1802
3235
log.debug("GnuTLS: %s",
3236
string[:-1].decode("utf-8", errors="replace"))
3237
3238
gnutls.global_set_log_function(debug_gnutls)
3239
1803
3240
# Redirect stdin so all checkers get /dev/null
1804
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3241
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1805
3242
os.dup2(null, sys.stdin.fileno())
1806
3243
if null > 2:
1807
3244
os.close(null)
1808
else:
1809
# No console logging
1810
logger.removeHandler(console)
1811
1812
3245
3246
# Need to fork before connecting to D-Bus
3247
if not foreground:
3248
# Close all input and output, do double fork, etc.
3249
daemon()
3250
3251
if gi.version_info < (3, 10, 2):
3252
# multiprocessing will use threads, so before we use GLib we
3253
# need to inform GLib that threads will be used.
3254
GLib.threads_init()
3255
1813
3256
global main_loop
1814
3257
# From the Avahi example code
1815
DBusGMainLoop(set_as_default=True )
1816
main_loop = gobject.MainLoop()
1817
bus = dbus.SystemBus()
3258
DBusGMainLoop(set_as_default=True)
3259
main_loop = GLib.MainLoop()
3260
if use_dbus or zeroconf:
3261
bus = dbus.SystemBus()
1818
3262
# End of Avahi example code
1819
3263
if use_dbus:
1820
3264
try:
1821
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1822
bus, do_not_queue=True)
1823
except dbus.exceptions.NameExistsException, e:
1824
logger.error(unicode(e) + u", disabling D-Bus")
3265
bus_name = dbus.service.BusName("se.recompile.Mandos",
3266
bus,
3267
do_not_queue=True)
3268
old_bus_name = dbus.service.BusName(
3269
"se.bsnet.fukt.Mandos", bus,
3270
do_not_queue=True)
3271
except dbus.exceptions.DBusException as e:
3272
log.error("Disabling D-Bus:", exc_info=e)
1825
3273
use_dbus = False
1826
server_settings[u"use_dbus"] = False
3274
server_settings["use_dbus"] = False
1827
3275
tcp_server.use_dbus = False
1828
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1829
service = AvahiService(name = server_settings[u"servicename"],
1830
servicetype = u"_mandos._tcp",
1831
protocol = protocol, bus = bus)
1832
if server_settings["interface"]:
1833
service.interface = (if_nametoindex
1834
(str(server_settings[u"interface"])))
3276
if zeroconf:
3277
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3278
service = AvahiServiceToSyslog(
3279
name=server_settings["servicename"],
3280
servicetype="_mandos._tcp",
3281
protocol=protocol,
3282
bus=bus)
3283
if server_settings["interface"]:
3284
service.interface = if_nametoindex(
3285
server_settings["interface"].encode("utf-8"))
1835
3286
1836
if not debug:
1837
# Close all input and output, do double fork, etc.
1838
daemon()
1839
1840
3287
global multiprocessing_manager
1841
3288
multiprocessing_manager = multiprocessing.Manager()
1842
3289
1843
3290
client_class = Client
1844
3291
if use_dbus:
1845
client_class = functools.partial(ClientDBus, bus = bus)
1846
def client_config_items(config, section):
1847
special_settings = {
1848
"approved_by_default":
1849
lambda: config.getboolean(section,
1850
"approved_by_default"),
1851
}
1852
for name, value in config.items(section):
3292
client_class = functools.partial(ClientDBus, bus=bus)
3293
3294
client_settings = Client.config_parser(client_config)
3295
old_client_settings = {}
3296
clients_data = {}
3297
3298
# This is used to redirect stdout and stderr for checker processes
3299
global wnull
3300
wnull = open(os.devnull, "w") # A writable /dev/null
3301
# Only used if server is running in foreground but not in debug
3302
# mode
3303
if debug or not foreground:
3304
wnull.close()
3305
3306
# Get client data and settings from last running state.
3307
if server_settings["restore"]:
3308
try:
3309
with open(stored_state_path, "rb") as stored_state:
3310
if sys.version_info.major == 2:
3311
clients_data, old_client_settings = pickle.load(
3312
stored_state)
3313
else:
3314
bytes_clients_data, bytes_old_client_settings = (
3315
pickle.load(stored_state, encoding="bytes"))
3316
# Fix bytes to strings
3317
# clients_data
3318
# .keys()
3319
clients_data = {(key.decode("utf-8")
3320
if isinstance(key, bytes)
3321
else key): value
3322
for key, value in
3323
bytes_clients_data.items()}
3324
del bytes_clients_data
3325
for key in clients_data:
3326
value = {(k.decode("utf-8")
3327
if isinstance(k, bytes) else k): v
3328
for k, v in
3329
clients_data[key].items()}
3330
clients_data[key] = value
3331
# .client_structure
3332
value["client_structure"] = [
3333
(s.decode("utf-8")
3334
if isinstance(s, bytes)
3335
else s) for s in
3336
value["client_structure"]]
3337
# .name, .host, and .checker_command
3338
for k in ("name", "host", "checker_command"):
3339
if isinstance(value[k], bytes):
3340
value[k] = value[k].decode("utf-8")
3341
if "key_id" not in value:
3342
value["key_id"] = ""
3343
elif "fingerprint" not in value:
3344
value["fingerprint"] = ""
3345
# old_client_settings
3346
# .keys()
3347
old_client_settings = {
3348
(key.decode("utf-8")
3349
if isinstance(key, bytes)
3350
else key): value
3351
for key, value in
3352
bytes_old_client_settings.items()}
3353
del bytes_old_client_settings
3354
# .host and .checker_command
3355
for value in old_client_settings.values():
3356
for attribute in ("host", "checker_command"):
3357
if isinstance(value[attribute], bytes):
3358
value[attribute] = (value[attribute]
3359
.decode("utf-8"))
3360
os.remove(stored_state_path)
3361
except IOError as e:
3362
if e.errno == errno.ENOENT:
3363
log.warning("Could not load persistent state:"
3364
" %s", os.strerror(e.errno))
3365
else:
3366
log.critical("Could not load persistent state:",
3367
exc_info=e)
3368
raise
3369
except EOFError as e:
3370
log.warning("Could not load persistent state: EOFError:",
3371
exc_info=e)
3372
3373
with PGPEngine() as pgp:
3374
for client_name, client in clients_data.items():
3375
# Skip removed clients
3376
if client_name not in client_settings:
3377
continue
3378
3379
# Decide which value to use after restoring saved state.
3380
# We have three different values: Old config file,
3381
# new config file, and saved state.
3382
# New config value takes precedence if it differs from old
3383
# config value, otherwise use saved state.
3384
for name, value in client_settings[client_name].items():
3385
try:
3386
# For each value in new config, check if it
3387
# differs from the old config value (Except for
3388
# the "secret" attribute)
3389
if (name != "secret"
3390
and (value !=
3391
old_client_settings[client_name][name])):
3392
client[name] = value
3393
except KeyError:
3394
pass
3395
3396
# Clients who has passed its expire date can still be
3397
# enabled if its last checker was successful. A Client
3398
# whose checker succeeded before we stored its state is
3399
# assumed to have successfully run all checkers during
3400
# downtime.
3401
if client["enabled"]:
3402
if datetime.datetime.utcnow() >= client["expires"]:
3403
if not client["last_checked_ok"]:
3404
log.warning("disabling client %s - Client"
3405
" never performed a successful"
3406
" checker", client_name)
3407
client["enabled"] = False
3408
elif client["last_checker_status"] != 0:
3409
log.warning("disabling client %s - Client"
3410
" last checker failed with error"
3411
" code %s", client_name,
3412
client["last_checker_status"])
3413
client["enabled"] = False
3414
else:
3415
client["expires"] = (
3416
datetime.datetime.utcnow()
3417
+ client["timeout"])
3418
log.debug("Last checker succeeded, keeping %s"
3419
" enabled", client_name)
1853
3420
try:
1854
yield (name, special_settings[name]())
1855
except KeyError:
1856
yield (name, value)
1857
1858
tcp_server.clients.update(set(
1859
client_class(name = section,
1860
config= dict(client_config_items(
1861
client_config, section)))
1862
for section in client_config.sections()))
3421
client["secret"] = pgp.decrypt(
3422
client["encrypted_secret"],
3423
client_settings[client_name]["secret"])
3424
except PGPError:
3425
# If decryption fails, we use secret from new settings
3426
log.debug("Failed to decrypt %s old secret",
3427
client_name)
3428
client["secret"] = (client_settings[client_name]
3429
["secret"])
3430
3431
# Add/remove clients based on new changes made to config
3432
for client_name in (set(old_client_settings)
3433
- set(client_settings)):
3434
del clients_data[client_name]
3435
for client_name in (set(client_settings)
3436
- set(old_client_settings)):
3437
clients_data[client_name] = client_settings[client_name]
3438
3439
# Create all client objects
3440
for client_name, client in clients_data.items():
3441
tcp_server.clients[client_name] = client_class(
3442
name=client_name,
3443
settings=client,
3444
server_settings=server_settings)
3445
1863
3446
if not tcp_server.clients:
1864
logger.warning(u"No clients defined")
1865
1866
try:
1867
with pidfile:
3447
log.warning("No clients defined")
3448
3449
if not foreground:
3450
if pidfile is not None:
1868
3451
pid = os.getpid()
1869
pidfile.write(str(pid) + "\n")
3452
try:
3453
with pidfile:
3454
print(pid, file=pidfile)
3455
except IOError:
3456
log.error("Could not write to file %r with PID %d",
3457
pidfilename, pid)
1870
3458
del pidfile
1871
except IOError:
1872
logger.error(u"Could not write to file %r with PID %d",
1873
pidfilename, pid)
1874
except NameError:
1875
# "pidfile" was never created
1876
pass
1877
del pidfilename
1878
1879
if not debug:
1880
signal.signal(signal.SIGINT, signal.SIG_IGN)
1881
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1882
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1883
3459
del pidfilename
3460
3461
for termsig in (signal.SIGHUP, signal.SIGTERM):
3462
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3463
lambda: main_loop.quit() and False)
3464
1884
3465
if use_dbus:
1885
class MandosDBusService(dbus.service.Object):
3466
3467
@alternate_dbus_interfaces(
3468
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3469
class MandosDBusService(DBusObjectWithObjectManager):
1886
3470
"""A D-Bus proxy object"""
3471
1887
3472
def __init__(self):
1888
dbus.service.Object.__init__(self, bus, u"/")
1889
_interface = u"se.bsnet.fukt.Mandos"
1890
1891
@dbus.service.signal(_interface, signature=u"o")
3473
dbus.service.Object.__init__(self, bus, "/")
3474
3475
_interface = "se.recompile.Mandos"
3476
3477
@dbus.service.signal(_interface, signature="o")
1892
3478
def ClientAdded(self, objpath):
1893
3479
"D-Bus signal"
1894
3480
pass
1895
1896
@dbus.service.signal(_interface, signature=u"ss")
1897
def ClientNotFound(self, fingerprint, address):
3481
3482
@dbus.service.signal(_interface, signature="ss")
3483
def ClientNotFound(self, key_id, address):
1898
3484
"D-Bus signal"
1899
3485
pass
1900
1901
@dbus.service.signal(_interface, signature=u"os")
3486
3487
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3488
"true"})
3489
@dbus.service.signal(_interface, signature="os")
1902
3490
def ClientRemoved(self, objpath, name):
1903
3491
"D-Bus signal"
1904
3492
pass
1905
1906
@dbus.service.method(_interface, out_signature=u"ao")
3493
3494
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3495
"true"})
3496
@dbus.service.method(_interface, out_signature="ao")
1907
3497
def GetAllClients(self):
1908
3498
"D-Bus method"
1909
return dbus.Array(c.dbus_object_path
1910
for c in tcp_server.clients)
1911
3499
return dbus.Array(c.dbus_object_path for c in
3500
tcp_server.clients.values())
3501
3502
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3503
"true"})
1912
3504
@dbus.service.method(_interface,
1913
out_signature=u"a{oa{sv}}")
3505
out_signature="a{oa{sv}}")
1914
3506
def GetAllClientsWithProperties(self):
1915
3507
"D-Bus method"
1916
3508
return dbus.Dictionary(
1917
((c.dbus_object_path, c.GetAll(u""))
1918
for c in tcp_server.clients),
1919
signature=u"oa{sv}")
1920
1921
@dbus.service.method(_interface, in_signature=u"o")
3509
{c.dbus_object_path: c.GetAll(
3510
"se.recompile.Mandos.Client")
3511
for c in tcp_server.clients.values()},
3512
signature="oa{sv}")
3513
3514
@dbus.service.method(_interface, in_signature="o")
1922
3515
def RemoveClient(self, object_path):
1923
3516
"D-Bus method"
1924
for c in tcp_server.clients:
3517
for c in tcp_server.clients.values():
1925
3518
if c.dbus_object_path == object_path:
1926
tcp_server.clients.remove(c)
3519
del tcp_server.clients[c.name]
1927
3520
c.remove_from_connection()
1928
# Don't signal anything except ClientRemoved
3521
# Don't signal the disabling
1929
3522
c.disable(quiet=True)
1930
# Emit D-Bus signal
1931
self.ClientRemoved(object_path, c.name)
3523
# Emit D-Bus signal for removal
3524
self.client_removed_signal(c)
1932
3525
return
1933
3526
raise KeyError(object_path)
1934
3527
1935
3528
del _interface
1936
3529
3530
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3531
out_signature="a{oa{sa{sv}}}")
3532
def GetManagedObjects(self):
3533
"""D-Bus method"""
3534
return dbus.Dictionary(
3535
{client.dbus_object_path:
3536
dbus.Dictionary(
3537
{interface: client.GetAll(interface)
3538
for interface in
3539
client._get_all_interface_names()})
3540
for client in tcp_server.clients.values()})
3541
3542
def client_added_signal(self, client):
3543
"""Send the new standard signal and the old signal"""
3544
if use_dbus:
3545
# New standard signal
3546
self.InterfacesAdded(
3547
client.dbus_object_path,
3548
dbus.Dictionary(
3549
{interface: client.GetAll(interface)
3550
for interface in
3551
client._get_all_interface_names()}))
3552
# Old signal
3553
self.ClientAdded(client.dbus_object_path)
3554
3555
def client_removed_signal(self, client):
3556
"""Send the new standard signal and the old signal"""
3557
if use_dbus:
3558
# New standard signal
3559
self.InterfacesRemoved(
3560
client.dbus_object_path,
3561
client._get_all_interface_names())
3562
# Old signal
3563
self.ClientRemoved(client.dbus_object_path,
3564
client.name)
3565
1937
3566
mandos_dbus_service = MandosDBusService()
1938
3567
3568
# Save modules to variables to exempt the modules from being
3569
# unloaded before the function registered with atexit() is run.
3570
mp = multiprocessing
3571
wn = wnull
3572
1939
3573
def cleanup():
1940
3574
"Cleanup function; run on exit"
1941
service.cleanup()
1942
3575
if zeroconf:
3576
service.cleanup()
3577
3578
mp.active_children()
3579
wn.close()
3580
if not (tcp_server.clients or client_settings):
3581
return
3582
3583
# Store client before exiting. Secrets are encrypted with key
3584
# based on what config file has. If config file is
3585
# removed/edited, old secret will thus be unrecovable.
3586
clients = {}
3587
with PGPEngine() as pgp:
3588
for client in tcp_server.clients.values():
3589
key = client_settings[client.name]["secret"]
3590
client.encrypted_secret = pgp.encrypt(client.secret,
3591
key)
3592
client_dict = {}
3593
3594
# A list of attributes that can not be pickled
3595
# + secret.
3596
exclude = {"bus", "changedstate", "secret",
3597
"checker", "server_settings"}
3598
for name, typ in inspect.getmembers(dbus.service
3599
.Object):
3600
exclude.add(name)
3601
3602
client_dict["encrypted_secret"] = (client
3603
.encrypted_secret)
3604
for attr in client.client_structure:
3605
if attr not in exclude:
3606
client_dict[attr] = getattr(client, attr)
3607
3608
clients[client.name] = client_dict
3609
del client_settings[client.name]["secret"]
3610
3611
try:
3612
with tempfile.NamedTemporaryFile(
3613
mode="wb",
3614
suffix=".pickle",
3615
prefix="clients-",
3616
dir=os.path.dirname(stored_state_path),
3617
delete=False) as stored_state:
3618
pickle.dump((clients, client_settings), stored_state,
3619
protocol=2)
3620
tempname = stored_state.name
3621
os.rename(tempname, stored_state_path)
3622
except (IOError, OSError) as e:
3623
if not debug:
3624
try:
3625
os.remove(tempname)
3626
except NameError:
3627
pass
3628
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3629
log.warning("Could not save persistent state: %s",
3630
os.strerror(e.errno))
3631
else:
3632
log.warning("Could not save persistent state:",
3633
exc_info=e)
3634
raise
3635
3636
# Delete all clients, and settings from config
1943
3637
while tcp_server.clients:
1944
client = tcp_server.clients.pop()
3638
name, client = tcp_server.clients.popitem()
1945
3639
if use_dbus:
1946
3640
client.remove_from_connection()
1947
client.disable_hook = None
1948
# Don't signal anything except ClientRemoved
3641
# Don't signal the disabling
1949
3642
client.disable(quiet=True)
3643
# Emit D-Bus signal for removal
1950
3644
if use_dbus:
1951
# Emit D-Bus signal
1952
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1953
client.name)
1954
3645
mandos_dbus_service.client_removed_signal(client)
3646
client_settings.clear()
3647
1955
3648
atexit.register(cleanup)
1956
1957
for client in tcp_server.clients:
3649
3650
for client in tcp_server.clients.values():
1958
3651
if use_dbus:
1959
# Emit D-Bus signal
1960
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1961
client.enable()
1962
3652
# Emit D-Bus signal for adding
3653
mandos_dbus_service.client_added_signal(client)
3654
# Need to initiate checking of clients
3655
if client.enabled:
3656
client.init_checker(randomize_start=True)
3657
1963
3658
tcp_server.enable()
1964
3659
tcp_server.server_activate()
1965
3660
1966
3661
# Find out what port we got
1967
service.port = tcp_server.socket.getsockname()[1]
3662
if zeroconf:
3663
service.port = tcp_server.socket.getsockname()[1]
1968
3664
if use_ipv6:
1969
logger.info(u"Now listening on address %r, port %d,"
1970
" flowinfo %d, scope_id %d"
1971
% tcp_server.socket.getsockname())
3665
log.info("Now listening on address %r, port %d, flowinfo %d,"
3666
" scope_id %d", *tcp_server.socket.getsockname())
1972
3667
else: # IPv4
1973
logger.info(u"Now listening on address %r, port %d"
1974
% tcp_server.socket.getsockname())
1975
1976
#service.interface = tcp_server.socket.getsockname()[3]
1977
3668
log.info("Now listening on address %r, port %d",
3669
*tcp_server.socket.getsockname())
3670
3671
# service.interface = tcp_server.socket.getsockname()[3]
3672
1978
3673
try:
1979
# From the Avahi example code
1980
try:
1981
service.activate()
1982
except dbus.exceptions.DBusException, error:
1983
logger.critical(u"DBusException: %s", error)
1984
cleanup()
1985
sys.exit(1)
1986
# End of Avahi example code
1987
1988
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1989
lambda *args, **kwargs:
1990
(tcp_server.handle_request
1991
(*args[2:], **kwargs) or True))
1992
1993
logger.debug(u"Starting main loop")
3674
if zeroconf:
3675
# From the Avahi example code
3676
try:
3677
service.activate()
3678
except dbus.exceptions.DBusException as error:
3679
log.critical("D-Bus Exception", exc_info=error)
3680
cleanup()
3681
sys.exit(1)
3682
# End of Avahi example code
3683
3684
GLib.io_add_watch(
3685
GLib.IOChannel.unix_new(tcp_server.fileno()),
3686
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3687
lambda *args, **kwargs: (tcp_server.handle_request
3688
(*args[2:], **kwargs) or True))
3689
3690
log.debug("Starting main loop")
1994
3691
main_loop.run()
1995
except AvahiError, error:
1996
logger.critical(u"AvahiError: %s", error)
3692
except AvahiError as error:
3693
log.critical("Avahi Error", exc_info=error)
1997
3694
cleanup()
1998
3695
sys.exit(1)
1999
3696
except KeyboardInterrupt:
2000
3697
if debug:
2001
print >> sys.stderr
2002
logger.debug(u"Server received KeyboardInterrupt")
2003
logger.debug(u"Server exiting")
3698
print("", file=sys.stderr)
3699
log.debug("Server received KeyboardInterrupt")
3700
log.debug("Server exiting")
2004
3701
# Must run before the D-Bus bus name gets deregistered
2005
3702
cleanup()
2006
3703
2007
if __name__ == '__main__':
2008
main()
3704
3705
def parse_test_args():
3706
# type: () -> argparse.Namespace
3707
parser = argparse.ArgumentParser(add_help=False)
3708
parser.add_argument("--check", action="store_true")
3709
parser.add_argument("--prefix", )
3710
args, unknown_args = parser.parse_known_args()
3711
if args.check:
3712
# Remove test options from sys.argv
3713
sys.argv[1:] = unknown_args
3714
return args
3715
3716
# Add all tests from doctest strings
3717
def load_tests(loader, tests, none):
3718
import doctest
3719
tests.addTests(doctest.DocTestSuite())
3720
return tests
3721
3722
if __name__ == "__main__":
3723
options = parse_test_args()
3724
try:
3725
if options.check:
3726
extra_test_prefix = options.prefix
3727
if extra_test_prefix is not None:
3728
if not (unittest.main(argv=[""], exit=False)
3729
.result.wasSuccessful()):
3730
sys.exit(1)
3731
class ExtraTestLoader(unittest.TestLoader):
3732
testMethodPrefix = extra_test_prefix
3733
# Call using ./scriptname --test [--verbose]
3734
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3735
else:
3736
unittest.main(argv=[""])
3737
else:
3738
main()
3739
finally:
3740
logging.shutdown()
3741
3742
# Local Variables:
3743
# run-tests:
3744
# (lambda (&optional extra)
3745
# (if (not (funcall run-tests-in-test-buffer default-directory
3746
# extra))
3747
# (funcall show-test-buffer-in-test-window)
3748
# (funcall remove-test-window)
3749
# (if extra (message "Extra tests run successfully!"))))
3750
# run-tests-in-test-buffer:
3751
# (lambda (dir &optional extra)
3752
# (with-current-buffer (get-buffer-create "*Test*")
3753
# (setq buffer-read-only nil
3754
# default-directory dir)
3755
# (erase-buffer)
3756
# (compilation-mode))
3757
# (let ((process-result
3758
# (let ((inhibit-read-only t))
3759
# (process-file-shell-command
3760
# (funcall get-command-line extra) nil "*Test*"))))
3761
# (and (numberp process-result)
3762
# (= process-result 0))))
3763
# get-command-line:
3764
# (lambda (&optional extra)
3765
# (let ((quoted-script
3766
# (shell-quote-argument (funcall get-script-name))))
3767
# (format
3768
# (concat "%s --check" (if extra " --prefix=atest" ""))
3769
# quoted-script)))
3770
# get-script-name:
3771
# (lambda ()
3772
# (if (fboundp 'file-local-name)
3773
# (file-local-name (buffer-file-name))
3774
# (or (file-remote-p (buffer-file-name) 'localname)
3775
# (buffer-file-name))))
3776
# remove-test-window:
3777
# (lambda ()
3778
# (let ((test-window (get-buffer-window "*Test*")))
3779
# (if test-window (delete-window test-window))))
3780
# show-test-buffer-in-test-window:
3781
# (lambda ()
3782
# (when (not (get-buffer-window-list "*Test*"))
3783
# (setq next-error-last-buffer (get-buffer "*Test*"))
3784
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3785
# (display-buffer-overriding-action
3786
# `((display-buffer-in-side-window) (side . ,side)
3787
# (window-height . fit-window-to-buffer)
3788
# (window-width . fit-window-to-buffer))))
3789
# (display-buffer "*Test*"))))
3790
# eval:
3791
# (progn
3792
# (let* ((run-extra-tests (lambda () (interactive)
3793
# (funcall run-tests t)))
3794
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3795
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3796
# (setq minor-mode-overriding-map-alist
3797
# (cons `(run-tests . ,outer-keymap)
3798
# minor-mode-overriding-map-alist)))
3799
# (add-hook 'after-save-hook run-tests 90 t))
3800
# End:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0