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- Committer: Björn Påhlsson
- Date: 2010-08-22 18:35:37 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: belorn@fukt.bsnet.se-20100822183537-6trr1puyjvk14ejg
* mandos: Added ClientDBus.approve_pending property. Exposed
approved_by_default, approved_delay, approved_duration as
D-Bus properties.
approved_by_default, approved_delay, approved_duration as
D-Bus properties.
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
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
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
51
37
import socket
38
import optparse
52
39
import datetime
53
40
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
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
58
49
import re
50
import os
59
51
import signal
60
52
import subprocess
61
53
import atexit
62
54
import stat
55
import logging
63
56
import logging.handlers
64
57
import pwd
65
58
import contextlib
66
59
import struct
67
60
import fcntl
68
61
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
62
import cPickle as pickle
73
63
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
82
64
83
65
import dbus
84
66
import dbus.service
85
import gi
86
from gi.repository import GLib
67
import gobject
68
import avahi
87
69
from dbus.mainloop.glib import DBusGMainLoop
88
70
import ctypes
89
71
import ctypes.util
90
72
import xml.dom.minidom
91
73
import inspect
92
74
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:
75
try:
135
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
136
77
except AttributeError:
137
78
try:
138
# This is where SO_BINDTODEVICE was up to and including Python
139
# 2.6, and also 3.2:
140
79
from IN import SO_BINDTODEVICE
141
80
except ImportError:
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
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
100
101
multiprocessing_manager = multiprocessing.Manager()
344
102
345
103
class AvahiError(Exception):
346
104
def __init__(self, value, *args, **kwargs):
347
105
self.value = value
348
return super(AvahiError, self).__init__(value, *args,
349
**kwargs)
350
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
351
109
352
110
class AvahiServiceError(AvahiError):
353
111
pass
354
112
355
356
113
class AvahiGroupError(AvahiError):
357
114
pass
358
115
359
116
360
class AvahiService:
117
class AvahiService(object):
361
118
"""An Avahi (Zeroconf) service.
362
119
363
120
Attributes:
364
121
interface: integer; avahi.IF_UNSPEC or an interface index.
365
122
Used to optionally bind to the specified interface.
366
name: string; Example: "Mandos"
367
type: string; Example: "_mandos._tcp".
368
See <https://www.iana.org/assignments/service-names-port-numbers>
123
name: string; Example: u'Mandos'
124
type: string; Example: u'_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
369
126
port: integer; what port to announce
370
127
TXT: list of strings; TXT record for the service
371
128
domain: string; Domain to publish on, default to .local if empty.
377
134
server: D-Bus Server
378
135
bus: dbus.SystemBus()
379
136
"""
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):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = u"", host = u"", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
392
141
self.interface = interface
393
142
self.name = name
394
143
self.type = servicetype
402
151
self.group = None # our entry group
403
152
self.server = None
404
153
self.bus = bus
405
self.entry_group_state_changed_match = None
406
407
def rename(self, remove=True):
154
def rename(self):
408
155
"""Derived from the Avahi example code"""
409
156
if self.rename_count >= self.max_renames:
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))
157
logger.critical(u"No suitable Zeroconf service name found"
158
u" after %i retries, exiting.",
159
self.rename_count)
160
raise AvahiServiceError(u"Too many renames")
161
self.name = self.server.GetAlternativeServiceName(self.name)
162
logger.info(u"Changing Zeroconf service name to %r ...",
163
unicode(self.name))
164
syslogger.setFormatter(logging.Formatter
165
(u'Mandos (%s) [%%(process)d]:'
166
u' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
169
self.add()
416
170
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
433
171
def remove(self):
434
172
"""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
438
173
if self.group is not None:
439
174
self.group.Reset()
440
441
175
def add(self):
442
176
"""Derived from the Avahi example code"""
443
self.remove()
444
177
if self.group is None:
445
178
self.group = dbus.Interface(
446
179
self.bus.get_object(avahi.DBUS_NAME,
447
180
self.server.EntryGroupNew()),
448
181
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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)
182
self.group.connect_to_signal('StateChanged',
183
self
184
.entry_group_state_changed)
185
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
186
self.name, self.type)
454
187
self.group.AddService(
455
188
self.interface,
456
189
self.protocol,
460
193
dbus.UInt16(self.port),
461
194
avahi.string_array_to_txt_array(self.TXT))
462
195
self.group.Commit()
463
464
196
def entry_group_state_changed(self, state, error):
465
197
"""Derived from the Avahi example code"""
466
log.debug("Avahi entry group state change: %i", state)
467
198
logger.debug(u"Avahi state change: %i", state)
199
468
200
if state == avahi.ENTRY_GROUP_ESTABLISHED:
469
log.debug("Zeroconf service established.")
201
logger.debug(u"Zeroconf service established.")
470
202
elif state == avahi.ENTRY_GROUP_COLLISION:
471
log.info("Zeroconf service name collision.")
203
logger.warning(u"Zeroconf service name collision.")
472
204
self.rename()
473
205
elif state == avahi.ENTRY_GROUP_FAILURE:
474
log.critical("Avahi: Error in group state changed %s",
475
str(error))
476
raise AvahiGroupError("State changed: {!s}".format(error))
477
206
logger.critical(u"Avahi: Error in group state changed %s",
207
unicode(error))
208
raise AvahiGroupError(u"State changed: %s"
209
% unicode(error))
478
210
def cleanup(self):
479
211
"""Derived from the Avahi example code"""
480
212
if self.group is not None:
481
try:
482
self.group.Free()
483
except (dbus.exceptions.UnknownMethodException,
484
dbus.exceptions.DBusException):
485
pass
213
self.group.Free()
486
214
self.group = None
487
self.remove()
488
489
def server_state_changed(self, state, error=None):
215
def server_state_changed(self, state):
490
216
"""Derived from the Avahi example code"""
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()
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
505
220
elif state == avahi.SERVER_RUNNING:
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
221
self.add()
523
222
def activate(self):
524
223
"""Derived from the Avahi example code"""
525
224
if self.server is None:
526
225
self.server = dbus.Interface(
527
226
self.bus.get_object(avahi.DBUS_NAME,
528
avahi.DBUS_PATH_SERVER,
529
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
530
228
avahi.DBUS_INTERFACE_SERVER)
531
self.server.connect_to_signal("StateChanged",
532
self.server_state_changed)
229
self.server.connect_to_signal(u"StateChanged",
230
self.server_state_changed)
533
231
self.server_state_changed(self.server.GetState())
534
232
535
233
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:
234
class Client(object):
888
235
"""A representation of a client host served by this server.
889
236
890
237
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
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
240
fingerprint: string (40 or 32 hexadecimal digits); used to
241
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
host: string; available for use by the checker command
903
244
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
245
last_enabled: datetime.datetime(); (UTC)
908
246
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
247
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
923
name: string; from the config file, used in log messages and
924
D-Bus identifiers
925
secret: bytestring; sent verbatim (over TLS) to client
926
248
timeout: datetime.timedelta(); How long from last_checked_ok
927
249
until this client is disabled
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()
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
252
checker: subprocess.Popen(); a running checker process used
253
to see if the client lives.
254
'None' if no process is running.
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
260
runtime with vars(self) as dict, so that for
261
instance %(name)s can be used in the command.
262
current_checker_command: string; current running checker_command
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
933
266
"""
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
267
952
268
@staticmethod
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):
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
def timeout_milliseconds(self):
276
"Return the 'timeout' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.timeout)
278
279
def interval_milliseconds(self):
280
"Return the 'interval' attribute in milliseconds"
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
285
286
def __init__(self, name = None, disable_hook=None, config=None):
287
"""Note: the 'checker' key in 'config' sets the
288
'checker_command' attribute and *not* the 'checker'
289
attribute."""
1013
290
self.name = name
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)
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
294
# Uppercase and remove spaces from fingerprint for later
295
# comparison purposes with return value from the fingerprint()
296
# function
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
1027
307
else:
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
308
#XXX Need to allow secret on demand!
309
raise TypeError(u"No secret or secfile for client %s"
310
% self.name)
311
self.host = config.get(u"host", u"")
312
self.created = datetime.datetime.utcnow()
313
self.enabled = False
314
self.last_enabled = None
315
self.last_checked_ok = None
316
self.timeout = string_to_delta(config[u"timeout"])
317
self.interval = string_to_delta(config[u"interval"])
318
self.disable_hook = disable_hook
1038
319
self.checker = None
1039
320
self.checker_initiator_tag = None
1040
321
self.disable_initiator_tag = None
1041
322
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
1042
324
self.current_checker_command = None
1043
self.approved = None
325
self.last_connect = None
1044
326
self.approvals_pending = 0
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
327
self._approved = None
328
self.approved_by_default = config.get(u"approved_by_default",
329
False)
330
self.approved_delay = string_to_delta(
331
config[u"approved_delay"])
332
self.approved_duration = string_to_delta(
333
config[u"approved_duration"])
334
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
335
1058
336
def send_changedstate(self):
1059
with self.changedstate:
1060
self.changedstate.notify_all()
1061
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
1062
341
def enable(self):
1063
342
"""Start this client's checker and timeout hooks"""
1064
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
1065
344
# Already enabled
1066
345
return
1067
self.enabled = True
346
self.send_changedstate()
1068
347
self.last_enabled = datetime.datetime.utcnow()
1069
self.init_checker()
1070
self.send_changedstate()
1071
348
# Schedule a new checker to be started an 'interval' from now,
349
# and every interval from then on.
350
self.checker_initiator_tag = (gobject.timeout_add
351
(self.interval_milliseconds(),
352
self.start_checker))
353
# Schedule a disable() when 'timeout' has passed
354
self.disable_initiator_tag = (gobject.timeout_add
355
(self.timeout_milliseconds(),
356
self.disable))
357
self.enabled = True
358
# Also start a new checker *right now*.
359
self.start_checker()
360
1072
361
def disable(self, quiet=True):
1073
362
"""Disable this client."""
1074
363
if not getattr(self, "enabled", False):
1075
364
return False
1076
365
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)
366
self.send_changedstate()
367
if not quiet:
368
logger.info(u"Disabling client %s", self.name)
369
if getattr(self, u"disable_initiator_tag", False):
370
gobject.source_remove(self.disable_initiator_tag)
1080
371
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)
372
if getattr(self, u"checker_initiator_tag", False):
373
gobject.source_remove(self.checker_initiator_tag)
1084
374
self.checker_initiator_tag = None
1085
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
1086
378
self.enabled = False
1087
if not quiet:
1088
self.send_changedstate()
1089
# Do not run this again if called by a GLib.timeout_add
379
# Do not run this again if called by a gobject.timeout_add
1090
380
return False
1091
381
1092
382
def __del__(self):
383
self.disable_hook = None
1093
384
self.disable()
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):
385
386
def checker_callback(self, pid, condition, command):
1127
387
"""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()
1133
388
self.checker_callback_tag = None
1134
389
self.checker = None
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))
390
if os.WIFEXITED(condition):
391
exitstatus = os.WEXITSTATUS(condition)
392
if exitstatus == 0:
393
logger.info(u"Checker for %(name)s succeeded",
394
vars(self))
1141
395
self.checked_ok()
1142
396
else:
1143
log.info("Checker for %(name)s failed", vars(self))
397
logger.info(u"Checker for %(name)s failed",
398
vars(self))
1144
399
else:
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
400
logger.warning(u"Checker for %(name)s crashed?",
401
vars(self))
402
1150
403
def checked_ok(self):
1151
"""Assert that the client has been seen, alive and well."""
404
"""Bump up the timeout for this client.
405
406
This should only be called when the client has been seen,
407
alive and well.
408
"""
1152
409
self.last_checked_ok = datetime.datetime.utcnow()
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):
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = (gobject.timeout_add
412
(self.timeout_milliseconds(),
413
self.disable))
414
415
def start_checker(self):
1173
416
"""Start a new checker subprocess if one is not running.
1174
417
1175
418
If a checker already exists, leave it running and do
1176
419
nothing."""
1177
420
# The reason for not killing a running checker is that if we
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
421
# did that, then if a checker (for some reason) started
422
# running slowly and taking more than 'interval' time, the
423
# client would inevitably timeout, since no checker would get
424
# a chance to run to completion. If we instead leave running
1182
425
# checkers alone, the checker would have to take more time
1183
426
# than 'timeout' for the client to be disabled, which is as it
1184
427
# should be.
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
428
429
# If a checker exists, make sure it is not a zombie
430
try:
431
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
432
except (AttributeError, OSError), error:
433
if (isinstance(error, OSError)
434
and error.errno != errno.ECHILD):
435
raise error
436
else:
437
if pid:
438
logger.warning(u"Checker was a zombie")
439
gobject.source_remove(self.checker_callback_tag)
440
self.checker_callback(pid, status,
441
self.current_checker_command)
1190
442
# Start a new checker if needed
1191
443
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}
1196
444
try:
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
445
# In case checker_command has exactly one % operator
446
command = self.checker_command % self.host
447
except TypeError:
448
# Escape attributes for the shell
449
escaped_attrs = dict((key,
450
re.escape(unicode(str(val),
451
errors=
452
u'replace')))
453
for key, val in
454
vars(self).iteritems())
455
try:
456
command = self.checker_command % escaped_attrs
457
except TypeError, error:
458
logger.error(u'Could not format string "%s":'
459
u' %s', self.checker_command, error)
460
return True # Try again later
1202
461
self.current_checker_command = command
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
462
try:
463
logger.info(u"Starting checker %r for %s",
464
command, self.name)
465
# We don't need to redirect stdout and stderr, since
466
# in normal mode, that is already done by daemon(),
467
# and in debug mode we don't want to. (Stdin is
468
# always replaced by /dev/null.)
469
self.checker = subprocess.Popen(command,
470
close_fds=True,
471
shell=True, cwd=u"/")
472
self.checker_callback_tag = (gobject.child_watch_add
473
(self.checker.pid,
474
self.checker_callback,
475
data=command))
476
# The checker may have completed before the gobject
477
# watch was added. Check for this.
478
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
479
if pid:
480
gobject.source_remove(self.checker_callback_tag)
481
self.checker_callback(pid, status, command)
482
except OSError, error:
483
logger.error(u"Failed to start subprocess: %s",
484
error)
485
# Re-run this periodically if run by gobject.timeout_add
1240
486
return True
1241
487
1242
488
def stop_checker(self):
1243
489
"""Force the checker process, if any, to stop."""
1244
490
if self.checker_callback_tag:
1245
GLib.source_remove(self.checker_callback_tag)
491
gobject.source_remove(self.checker_callback_tag)
1246
492
self.checker_callback_tag = None
1247
if getattr(self, "checker", None) is None:
493
if getattr(self, u"checker", None) is None:
1248
494
return
1249
log.debug("Stopping checker for %(name)s", vars(self))
1250
self.checker.terminate()
495
logger.debug(u"Stopping checker for %(name)s", vars(self))
496
try:
497
os.kill(self.checker.pid, signal.SIGTERM)
498
#time.sleep(0.5)
499
#if self.checker.poll() is None:
500
# os.kill(self.checker.pid, signal.SIGKILL)
501
except OSError, error:
502
if error.errno != errno.ESRCH: # No such process
503
raise
1251
504
self.checker = None
1252
505
1253
1254
def dbus_service_property(dbus_interface,
1255
signature="v",
1256
access="readwrite",
1257
byte_arrays=False):
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
1258
508
"""Decorators for marking methods of a DBusObjectWithProperties to
1259
509
become properties on the D-Bus.
1260
510
1261
511
The decorated method will be called with no arguments by "Get"
1262
512
and with one argument by "Set".
1263
513
1264
514
The parameters, where they are supported, are the same as
1265
515
dbus.service.method, except there is only "signature", since the
1266
516
type from Get() and the type sent to Set() is the same.
1267
517
"""
1268
518
# Encoding deeply encoded byte arrays is not supported yet by the
1269
519
# "Set" method, so we fail early here:
1270
if byte_arrays and signature != "ay":
1271
raise ValueError("Byte arrays not supported for non-'ay'"
1272
" signature {!r}".format(signature))
1273
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
1274
523
def decorator(func):
1275
524
func._dbus_is_property = True
1276
525
func._dbus_interface = dbus_interface
1277
526
func._dbus_signature = signature
1278
527
func._dbus_access = access
1279
528
func._dbus_name = func.__name__
1280
if func._dbus_name.endswith("_dbus_property"):
529
if func._dbus_name.endswith(u"_dbus_property"):
1281
530
func._dbus_name = func._dbus_name[:-14]
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
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
532
return func
1328
533
return decorator
1329
534
1330
535
1331
536
class DBusPropertyException(dbus.exceptions.DBusException):
1332
537
"""A base class for D-Bus property-related exceptions
1333
538
"""
1334
pass
539
def __unicode__(self):
540
return unicode(str(self))
1335
541
1336
542
1337
543
class DBusPropertyAccessException(DBusPropertyException):
1346
552
pass
1347
553
1348
554
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):
555
class DBusObjectWithProperties(dbus.service.Object):
1439
556
"""A D-Bus object with properties.
1440
557
1441
558
Classes inheriting from this can use the dbus_service_property
1442
559
decorator to expose methods as D-Bus properties. It exposes the
1443
560
standard Get(), Set(), and GetAll() methods on the D-Bus.
1444
561
"""
1445
562
563
@staticmethod
564
def _is_dbus_property(obj):
565
return getattr(obj, u"_dbus_is_property", False)
566
567
def _get_all_dbus_properties(self):
568
"""Returns a generator of (name, attribute) pairs
569
"""
570
return ((prop._dbus_name, prop)
571
for name, prop in
572
inspect.getmembers(self, self._is_dbus_property))
573
1446
574
def _get_dbus_property(self, interface_name, property_name):
1447
575
"""Returns a bound method if one exists which is a D-Bus
1448
576
property with the specified name and interface.
1449
577
"""
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
578
for name in (property_name,
579
property_name + u"_dbus_property"):
580
prop = getattr(self, name, None)
581
if (prop is None
582
or not self._is_dbus_property(prop)
583
or prop._dbus_name != property_name
584
or (interface_name and prop._dbus_interface
585
and interface_name != prop._dbus_interface)):
586
continue
587
return prop
1457
588
# No such property
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")
589
raise DBusPropertyNotFound(self.dbus_object_path + u":"
590
+ interface_name + u"."
591
+ property_name)
592
593
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
594
out_signature=u"v")
1473
595
def Get(self, interface_name, property_name):
1474
596
"""Standard D-Bus property Get() method, see D-Bus standard.
1475
597
"""
1476
598
prop = self._get_dbus_property(interface_name, property_name)
1477
if prop._dbus_access == "write":
599
if prop._dbus_access == u"write":
1478
600
raise DBusPropertyAccessException(property_name)
1479
601
value = prop()
1480
if not hasattr(value, "variant_level"):
602
if not hasattr(value, u"variant_level"):
1481
603
return value
1482
604
return type(value)(value, variant_level=value.variant_level+1)
1483
1484
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1485
607
def Set(self, interface_name, property_name, value):
1486
608
"""Standard D-Bus property Set() method, see D-Bus standard.
1487
609
"""
1488
610
prop = self._get_dbus_property(interface_name, property_name)
1489
if prop._dbus_access == "read":
611
if prop._dbus_access == u"read":
1490
612
raise DBusPropertyAccessException(property_name)
1491
if prop._dbus_get_args_options["byte_arrays"]:
613
if prop._dbus_get_args_options[u"byte_arrays"]:
1492
614
# The byte_arrays option is not supported yet on
1493
615
# signatures other than "ay".
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))
616
if prop._dbus_signature != u"ay":
617
raise ValueError
618
value = dbus.ByteArray(''.join(unichr(byte)
619
for byte in value))
1499
620
prop(value)
1500
1501
@dbus.service.method(dbus.PROPERTIES_IFACE,
1502
in_signature="s",
1503
out_signature="a{sv}")
621
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
1504
624
def GetAll(self, interface_name):
1505
625
"""Standard D-Bus property GetAll() method, see D-Bus
1506
626
standard.
1507
627
1508
628
Note: Will not include properties with access="write".
1509
629
"""
1510
properties = {}
1511
for name, prop in self._get_all_dbus_things("property"):
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
1512
632
if (interface_name
1513
633
and interface_name != prop._dbus_interface):
1514
634
# Interface non-empty but did not match
1515
635
continue
1516
636
# Ignore write-only properties
1517
if prop._dbus_access == "write":
637
if prop._dbus_access == u"write":
1518
638
continue
1519
639
value = prop()
1520
if not hasattr(value, "variant_level"):
1521
properties[name] = value
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
1522
642
continue
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
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
646
1535
647
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1536
out_signature="s",
1537
path_keyword="object_path",
1538
connection_keyword="connection")
648
out_signature=u"s",
649
path_keyword='object_path',
650
connection_keyword='connection')
1539
651
def Introspect(self, object_path, connection):
1540
"""Overloading of standard D-Bus method.
1541
1542
Inserts property tags and interface annotation tags.
652
"""Standard D-Bus method, overloaded to insert property tags.
1543
653
"""
1544
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1545
object_path,
1546
connection)
654
xmlstring = dbus.service.Object.Introspect(self, object_path,
655
connection)
1547
656
try:
1548
657
document = xml.dom.minidom.parseString(xmlstring)
1549
1550
658
def make_tag(document, name, prop):
1551
e = document.createElement("property")
1552
e.setAttribute("name", name)
1553
e.setAttribute("type", prop._dbus_signature)
1554
e.setAttribute("access", prop._dbus_access)
659
e = document.createElement(u"property")
660
e.setAttribute(u"name", name)
661
e.setAttribute(u"type", prop._dbus_signature)
662
e.setAttribute(u"access", prop._dbus_access)
1555
663
return e
1556
1557
for if_tag in document.getElementsByTagName("interface"):
1558
# Add property tags
664
for if_tag in document.getElementsByTagName(u"interface"):
1559
665
for tag in (make_tag(document, name, prop)
1560
666
for name, prop
1561
in self._get_all_dbus_things("property")
667
in self._get_all_dbus_properties()
1562
668
if prop._dbus_interface
1563
== if_tag.getAttribute("name")):
669
== if_tag.getAttribute(u"name")):
1564
670
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)
1581
671
# Add the names to the return values for the
1582
672
# "org.freedesktop.DBus.Properties" methods
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"})
673
if (if_tag.getAttribute(u"name")
674
== u"org.freedesktop.DBus.Properties"):
675
for cn in if_tag.getElementsByTagName(u"method"):
676
if cn.getAttribute(u"name") == u"Get":
677
for arg in cn.getElementsByTagName(u"arg"):
678
if (arg.getAttribute(u"direction")
679
== u"out"):
680
arg.setAttribute(u"name", u"value")
681
elif cn.getAttribute(u"name") == u"GetAll":
682
for arg in cn.getElementsByTagName(u"arg"):
683
if (arg.getAttribute(u"direction")
684
== u"out"):
685
arg.setAttribute(u"name", u"props")
686
xmlstring = document.toxml(u"utf-8")
687
document.unlink()
688
except (AttributeError, xml.dom.DOMException,
689
xml.parsers.expat.ExpatError), error:
690
logger.error(u"Failed to override Introspection method",
691
error)
692
return xmlstring
693
694
1854
695
class ClientDBus(Client, DBusObjectWithProperties):
1855
696
"""A Client class using D-Bus
1856
697
1857
698
Attributes:
1858
699
dbus_object_path: dbus.ObjectPath
1859
700
bus: dbus.SystemBus()
1860
701
"""
1861
1862
runtime_expansions = (Client.runtime_expansions
1863
+ ("dbus_object_path", ))
1864
1865
_interface = "se.recompile.Mandos.Client"
1866
1867
702
# dbus.service.Object doesn't use super(), so we can't either.
1868
1869
def __init__(self, bus=None, *args, **kwargs):
703
704
def __init__(self, bus = None, *args, **kwargs):
1870
705
self.bus = bus
1871
706
Client.__init__(self, *args, **kwargs)
1872
707
# Only now, when this client is initialized, can it show up on
1873
708
# the D-Bus
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)
709
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1879
712
DBusObjectWithProperties.__init__(self, self.bus,
1880
713
self.dbus_object_path)
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
714
715
@staticmethod
716
def _datetime_to_dbus(dt, variant_level=0):
717
"""Convert a UTC datetime.datetime() to a D-Bus type."""
718
return dbus.String(dt.isoformat(),
719
variant_level=variant_level)
720
721
def enable(self):
722
oldstate = getattr(self, u"enabled", False)
723
r = Client.enable(self)
724
if oldstate != self.enabled:
725
# Emit D-Bus signals
726
self.PropertyChanged(dbus.String(u"enabled"),
727
dbus.Boolean(True, variant_level=1))
728
self.PropertyChanged(
729
dbus.String(u"last_enabled"),
730
self._datetime_to_dbus(self.last_enabled,
731
variant_level=1))
732
return r
733
734
def disable(self, quiet = False):
735
oldstate = getattr(self, u"enabled", False)
736
r = Client.disable(self, quiet=quiet)
737
if not quiet and oldstate != self.enabled:
738
# Emit D-Bus signal
739
self.PropertyChanged(dbus.String(u"enabled"),
740
dbus.Boolean(False, variant_level=1))
741
return r
742
1963
743
def __del__(self, *args, **kwargs):
1964
744
try:
1965
745
self.remove_from_connection()
1966
746
except LookupError:
1967
747
pass
1968
if hasattr(DBusObjectWithProperties, "__del__"):
748
if hasattr(DBusObjectWithProperties, u"__del__"):
1969
749
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1970
750
Client.__del__(self, *args, **kwargs)
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:
751
752
def checker_callback(self, pid, condition, command,
753
*args, **kwargs):
754
self.checker_callback_tag = None
755
self.checker = None
756
# Emit D-Bus signal
757
self.PropertyChanged(dbus.String(u"checker_running"),
758
dbus.Boolean(False, variant_level=1))
759
if os.WIFEXITED(condition):
760
exitstatus = os.WEXITSTATUS(condition)
1979
761
# Emit D-Bus signal
1980
762
self.CheckerCompleted(dbus.Int16(exitstatus),
1981
# This is specific to GNU libC
1982
dbus.Int64(exitstatus << 8),
763
dbus.Int64(condition),
1983
764
dbus.String(command))
1984
765
else:
1985
766
# Emit D-Bus signal
1986
767
self.CheckerCompleted(dbus.Int16(-1),
1987
dbus.Int64(
1988
# This is specific to GNU libC
1989
(exitstatus << 8)
1990
| self.last_checker_signal),
768
dbus.Int64(condition),
1991
769
dbus.String(command))
1992
return ret
1993
770
771
return Client.checker_callback(self, pid, condition, command,
772
*args, **kwargs)
773
774
def checked_ok(self, *args, **kwargs):
775
r = Client.checked_ok(self, *args, **kwargs)
776
# Emit D-Bus signal
777
self.PropertyChanged(
778
dbus.String(u"last_checked_ok"),
779
(self._datetime_to_dbus(self.last_checked_ok,
780
variant_level=1)))
781
return r
782
1994
783
def start_checker(self, *args, **kwargs):
1995
old_checker_pid = getattr(self.checker, "pid", None)
784
old_checker = self.checker
785
if self.checker is not None:
786
old_checker_pid = self.checker.pid
787
else:
788
old_checker_pid = None
1996
789
r = Client.start_checker(self, *args, **kwargs)
1997
790
# Only if new checker process was started
1998
791
if (self.checker is not None
1999
792
and old_checker_pid != self.checker.pid):
2000
793
# Emit D-Bus signal
2001
794
self.CheckerStarted(self.current_checker_command)
795
self.PropertyChanged(
796
dbus.String(u"checker_running"),
797
dbus.Boolean(True, variant_level=1))
798
return r
799
800
def stop_checker(self, *args, **kwargs):
801
old_checker = getattr(self, u"checker", None)
802
r = Client.stop_checker(self, *args, **kwargs)
803
if (old_checker is not None
804
and getattr(self, u"checker", None) is None):
805
self.PropertyChanged(dbus.String(u"checker_running"),
806
dbus.Boolean(False, variant_level=1))
2002
807
return r
2003
808
2004
809
def _reset_approved(self):
2005
self.approved = None
810
self._approved = None
2006
811
return False
2007
812
2008
813
def approve(self, value=True):
2009
self.approved = value
2010
GLib.timeout_add(int(self.approval_duration.total_seconds()
2011
* 1000), self._reset_approved)
2012
self.send_changedstate()
2013
2014
# D-Bus methods, signals & properties
2015
2016
# Interfaces
2017
2018
# Signals
2019
814
self._approved = value
815
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
816
817
def approved_pending(self):
818
return self.approvals_pending > 0
819
820
821
## D-Bus methods, signals & properties
822
_interface = u"se.bsnet.fukt.Mandos.Client"
823
824
## Signals
825
2020
826
# CheckerCompleted - signal
2021
@dbus.service.signal(_interface, signature="nxs")
827
@dbus.service.signal(_interface, signature=u"nxs")
2022
828
def CheckerCompleted(self, exitcode, waitstatus, command):
2023
829
"D-Bus signal"
2024
830
pass
2025
831
2026
832
# CheckerStarted - signal
2027
@dbus.service.signal(_interface, signature="s")
833
@dbus.service.signal(_interface, signature=u"s")
2028
834
def CheckerStarted(self, command):
2029
835
"D-Bus signal"
2030
836
pass
2031
837
2032
838
# PropertyChanged - signal
2033
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2034
@dbus.service.signal(_interface, signature="sv")
839
@dbus.service.signal(_interface, signature=u"sv")
2035
840
def PropertyChanged(self, property, value):
2036
841
"D-Bus signal"
2037
842
pass
2038
843
2039
844
# GotSecret - signal
2040
845
@dbus.service.signal(_interface)
2041
846
def GotSecret(self):
2042
"""D-Bus signal
2043
Is sent after a successful transfer of secret from the Mandos
2044
server to mandos-client
2045
"""
847
"D-Bus signal"
2046
848
pass
2047
849
2048
850
# Rejected - signal
2049
@dbus.service.signal(_interface, signature="s")
851
@dbus.service.signal(_interface, signature=u"s")
2050
852
def Rejected(self, reason):
2051
853
"D-Bus signal"
2052
854
pass
2053
855
2054
856
# NeedApproval - signal
2055
@dbus.service.signal(_interface, signature="tb")
857
@dbus.service.signal(_interface, signature=u"db")
2056
858
def NeedApproval(self, timeout, default):
2057
859
"D-Bus signal"
2058
return self.need_approval()
2059
2060
# Methods
860
pass
861
862
## Methods
2061
863
2062
864
# Approve - method
2063
@dbus.service.method(_interface, in_signature="b")
865
@dbus.service.method(_interface, in_signature=u"b")
2064
866
def Approve(self, value):
2065
867
self.approve(value)
2066
868
2067
869
# CheckedOK - method
2068
870
@dbus.service.method(_interface)
2069
871
def CheckedOK(self):
2070
self.checked_ok()
2071
872
return self.checked_ok()
873
2072
874
# Enable - method
2073
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2074
875
@dbus.service.method(_interface)
2075
876
def Enable(self):
2076
877
"D-Bus method"
2077
878
self.enable()
2078
879
2079
880
# StartChecker - method
2080
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2081
881
@dbus.service.method(_interface)
2082
882
def StartChecker(self):
2083
883
"D-Bus method"
2084
884
self.start_checker()
2085
885
2086
886
# Disable - method
2087
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2088
887
@dbus.service.method(_interface)
2089
888
def Disable(self):
2090
889
"D-Bus method"
2091
890
self.disable()
2092
891
2093
892
# StopChecker - method
2094
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2095
893
@dbus.service.method(_interface)
2096
894
def StopChecker(self):
2097
895
self.stop_checker()
2098
2099
# Properties
2100
2101
# ApprovalPending - property
2102
@dbus_service_property(_interface, signature="b", access="read")
2103
def ApprovalPending_dbus_property(self):
2104
return dbus.Boolean(bool(self.approvals_pending))
2105
2106
# ApprovedByDefault - property
2107
@dbus_service_property(_interface,
2108
signature="b",
2109
access="readwrite")
2110
def ApprovedByDefault_dbus_property(self, value=None):
2111
if value is None: # get
2112
return dbus.Boolean(self.approved_by_default)
2113
self.approved_by_default = bool(value)
2114
2115
# ApprovalDelay - property
2116
@dbus_service_property(_interface,
2117
signature="t",
2118
access="readwrite")
2119
def ApprovalDelay_dbus_property(self, value=None):
2120
if value is None: # get
2121
return dbus.UInt64(self.approval_delay.total_seconds()
2122
* 1000)
2123
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2124
2125
# ApprovalDuration - property
2126
@dbus_service_property(_interface,
2127
signature="t",
2128
access="readwrite")
2129
def ApprovalDuration_dbus_property(self, value=None):
2130
if value is None: # get
2131
return dbus.UInt64(self.approval_duration.total_seconds()
2132
* 1000)
2133
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2134
2135
# Name - property
2136
@dbus_annotations(
2137
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2138
@dbus_service_property(_interface, signature="s", access="read")
2139
def Name_dbus_property(self):
896
897
## Properties
898
899
# approved_pending - property
900
@dbus_service_property(_interface, signature=u"b", access=u"read")
901
def approved_pending_dbus_property(self):
902
return dbus.Boolean(self.approved_pending())
903
904
# approved_by_default - property
905
@dbus_service_property(_interface, signature=u"b",
906
access=u"readwrite")
907
def approved_by_default_dbus_property(self):
908
return dbus.Boolean(self.approved_by_default)
909
910
# approved_delay - property
911
@dbus_service_property(_interface, signature=u"t",
912
access=u"readwrite")
913
def approved_delay_dbus_property(self):
914
return dbus.UInt64(self.approved_delay_milliseconds())
915
916
# approved_duration - property
917
@dbus_service_property(_interface, signature=u"t",
918
access=u"readwrite")
919
def approved_duration_dbus_property(self):
920
return dbus.UInt64(self._timedelta_to_milliseconds(
921
self.approved_duration))
922
923
# name - property
924
@dbus_service_property(_interface, signature=u"s", access=u"read")
925
def name_dbus_property(self):
2140
926
return dbus.String(self.name)
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
2149
# Fingerprint - property
2150
@dbus_annotations(
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2152
@dbus_service_property(_interface, signature="s", access="read")
2153
def Fingerprint_dbus_property(self):
927
928
# fingerprint - property
929
@dbus_service_property(_interface, signature=u"s", access=u"read")
930
def fingerprint_dbus_property(self):
2154
931
return dbus.String(self.fingerprint)
2155
2156
# Host - property
2157
@dbus_service_property(_interface,
2158
signature="s",
2159
access="readwrite")
2160
def Host_dbus_property(self, value=None):
932
933
# host - property
934
@dbus_service_property(_interface, signature=u"s",
935
access=u"readwrite")
936
def host_dbus_property(self, value=None):
2161
937
if value is None: # get
2162
938
return dbus.String(self.host)
2163
self.host = str(value)
2164
2165
# Created - property
2166
@dbus_annotations(
2167
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2168
@dbus_service_property(_interface, signature="s", access="read")
2169
def Created_dbus_property(self):
2170
return datetime_to_dbus(self.created)
2171
2172
# LastEnabled - property
2173
@dbus_service_property(_interface, signature="s", access="read")
2174
def LastEnabled_dbus_property(self):
2175
return datetime_to_dbus(self.last_enabled)
2176
2177
# Enabled - property
2178
@dbus_service_property(_interface,
2179
signature="b",
2180
access="readwrite")
2181
def Enabled_dbus_property(self, value=None):
939
self.host = value
940
# Emit D-Bus signal
941
self.PropertyChanged(dbus.String(u"host"),
942
dbus.String(value, variant_level=1))
943
944
# created - property
945
@dbus_service_property(_interface, signature=u"s", access=u"read")
946
def created_dbus_property(self):
947
return dbus.String(self._datetime_to_dbus(self.created))
948
949
# last_enabled - property
950
@dbus_service_property(_interface, signature=u"s", access=u"read")
951
def last_enabled_dbus_property(self):
952
if self.last_enabled is None:
953
return dbus.String(u"")
954
return dbus.String(self._datetime_to_dbus(self.last_enabled))
955
956
# enabled - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
959
def enabled_dbus_property(self, value=None):
2182
960
if value is None: # get
2183
961
return dbus.Boolean(self.enabled)
2184
962
if value:
2185
963
self.enable()
2186
964
else:
2187
965
self.disable()
2188
2189
# LastCheckedOK - property
2190
@dbus_service_property(_interface,
2191
signature="s",
2192
access="readwrite")
2193
def LastCheckedOK_dbus_property(self, value=None):
966
967
# last_checked_ok - property
968
@dbus_service_property(_interface, signature=u"s",
969
access=u"readwrite")
970
def last_checked_ok_dbus_property(self, value=None):
2194
971
if value is not None:
2195
972
self.checked_ok()
2196
973
return
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
2214
# Timeout - property
2215
@dbus_service_property(_interface,
2216
signature="t",
2217
access="readwrite")
2218
def Timeout_dbus_property(self, value=None):
974
if self.last_checked_ok is None:
975
return dbus.String(u"")
976
return dbus.String(self._datetime_to_dbus(self
977
.last_checked_ok))
978
979
# timeout - property
980
@dbus_service_property(_interface, signature=u"t",
981
access=u"readwrite")
982
def timeout_dbus_property(self, value=None):
2219
983
if value is None: # get
2220
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2221
old_timeout = self.timeout
984
return dbus.UInt64(self.timeout_milliseconds())
2222
985
self.timeout = datetime.timedelta(0, 0, 0, value)
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
2249
# Interval - property
2250
@dbus_service_property(_interface,
2251
signature="t",
2252
access="readwrite")
2253
def Interval_dbus_property(self, value=None):
2254
if value is None: # get
2255
return dbus.UInt64(self.interval.total_seconds() * 1000)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"timeout"),
988
dbus.UInt64(value, variant_level=1))
989
if getattr(self, u"disable_initiator_tag", None) is None:
990
return
991
# Reschedule timeout
992
gobject.source_remove(self.disable_initiator_tag)
993
self.disable_initiator_tag = None
994
time_to_die = (self.
995
_timedelta_to_milliseconds((self
996
.last_checked_ok
997
+ self.timeout)
998
- datetime.datetime
999
.utcnow()))
1000
if time_to_die <= 0:
1001
# The timeout has passed
1002
self.disable()
1003
else:
1004
self.disable_initiator_tag = (gobject.timeout_add
1005
(time_to_die, self.disable))
1006
1007
# interval - property
1008
@dbus_service_property(_interface, signature=u"t",
1009
access=u"readwrite")
1010
def interval_dbus_property(self, value=None):
1011
if value is None: # get
1012
return dbus.UInt64(self.interval_milliseconds())
2256
1013
self.interval = datetime.timedelta(0, 0, 0, value)
2257
if getattr(self, "checker_initiator_tag", None) is None:
1014
# Emit D-Bus signal
1015
self.PropertyChanged(dbus.String(u"interval"),
1016
dbus.UInt64(value, variant_level=1))
1017
if getattr(self, u"checker_initiator_tag", None) is None:
2258
1018
return
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
1019
# Reschedule checker run
1020
gobject.source_remove(self.checker_initiator_tag)
1021
self.checker_initiator_tag = (gobject.timeout_add
1022
(value, self.start_checker))
1023
self.start_checker() # Start one now, too
2265
1024
2266
# Checker - property
2267
@dbus_service_property(_interface,
2268
signature="s",
2269
access="readwrite")
2270
def Checker_dbus_property(self, value=None):
1025
# checker - property
1026
@dbus_service_property(_interface, signature=u"s",
1027
access=u"readwrite")
1028
def checker_dbus_property(self, value=None):
2271
1029
if value is None: # get
2272
1030
return dbus.String(self.checker_command)
2273
self.checker_command = str(value)
2274
2275
# CheckerRunning - property
2276
@dbus_service_property(_interface,
2277
signature="b",
2278
access="readwrite")
2279
def CheckerRunning_dbus_property(self, value=None):
1031
self.checker_command = value
1032
# Emit D-Bus signal
1033
self.PropertyChanged(dbus.String(u"checker"),
1034
dbus.String(self.checker_command,
1035
variant_level=1))
1036
1037
# checker_running - property
1038
@dbus_service_property(_interface, signature=u"b",
1039
access=u"readwrite")
1040
def checker_running_dbus_property(self, value=None):
2280
1041
if value is None: # get
2281
1042
return dbus.Boolean(self.checker is not None)
2282
1043
if value:
2283
1044
self.start_checker()
2284
1045
else:
2285
1046
self.stop_checker()
2286
2287
# ObjectPath - property
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")
2292
def ObjectPath_dbus_property(self):
2293
return self.dbus_object_path # is already a dbus.ObjectPath
2294
2295
# Secret = property
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)
2303
def Secret_dbus_property(self, value):
2304
self.secret = bytes(value)
2305
1047
1048
# object_path - property
1049
@dbus_service_property(_interface, signature=u"o", access=u"read")
1050
def object_path_dbus_property(self):
1051
return self.dbus_object_path # is already a dbus.ObjectPath
1052
1053
# secret = property
1054
@dbus_service_property(_interface, signature=u"ay",
1055
access=u"write", byte_arrays=True)
1056
def secret_dbus_property(self, value):
1057
self.secret = str(value)
1058
2306
1059
del _interface
2307
1060
2308
1061
2309
class ProxyClient:
2310
def __init__(self, child_pipe, key_id, fpr, address):
1062
class ProxyClient(object):
1063
def __init__(self, child_pipe, fpr, address):
2311
1064
self._pipe = child_pipe
2312
self._pipe.send(("init", key_id, fpr, address))
1065
self._pipe.send(('init', fpr, address))
2313
1066
if not self._pipe.recv():
2314
raise KeyError(key_id or fpr)
1067
raise KeyError()
2315
1068
2316
1069
def __getattribute__(self, name):
2317
if name == "_pipe":
1070
if(name == '_pipe'):
2318
1071
return super(ProxyClient, self).__getattribute__(name)
2319
self._pipe.send(("getattr", name))
1072
self._pipe.send(('getattr', name))
2320
1073
data = self._pipe.recv()
2321
if data[0] == "data":
1074
if data[0] == 'data':
2322
1075
return data[1]
2323
if data[0] == "function":
2324
1076
if data[0] == 'function':
2325
1077
def func(*args, **kwargs):
2326
self._pipe.send(("funcall", name, args, kwargs))
1078
self._pipe.send(('funcall', name, args, kwargs))
2327
1079
return self._pipe.recv()[1]
2328
2329
1080
return func
2330
1081
2331
1082
def __setattr__(self, name, value):
2332
if name == "_pipe":
1083
if(name == '_pipe'):
2333
1084
return super(ProxyClient, self).__setattr__(name, value)
2334
self._pipe.send(("setattr", name, value))
1085
self._pipe.send(('setattr', name, value))
2335
1086
2336
1087
2337
1088
class ClientHandler(socketserver.BaseRequestHandler, object):
2338
1089
"""A class to handle client connections.
2339
1090
2340
1091
Instantiated once for each connection to handle it.
2341
1092
Note: This will run in its own forked process."""
2342
1093
2343
1094
def handle(self):
2344
1095
with contextlib.closing(self.server.child_pipe) as child_pipe:
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"))
1096
logger.info(u"TCP connection from: %s",
1097
unicode(self.client_address))
1098
logger.debug(u"Pipe FD: %d",
1099
self.server.child_pipe.fileno())
1100
1101
session = (gnutls.connection
1102
.ClientSession(self.request,
1103
gnutls.connection
1104
.X509Credentials()))
1105
1106
# Note: gnutls.connection.X509Credentials is really a
1107
# generic GnuTLS certificate credentials object so long as
1108
# no X.509 keys are added to it. Therefore, we can use it
1109
# here despite using OpenPGP certificates.
1110
1111
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1112
# u"+AES-256-CBC", u"+SHA1",
1113
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1114
# u"+DHE-DSS"))
2355
1115
# Use a fallback default, since this MUST be set.
2356
1116
priority = self.server.gnutls_priority
2357
1117
if priority is None:
2358
priority = "NORMAL"
2359
gnutls.priority_set_direct(session,
2360
priority.encode("utf-8"), None)
1118
priority = u"NORMAL"
1119
(gnutls.library.functions
1120
.gnutls_priority_set_direct(session._c_object,
1121
priority, None))
2361
1122
2362
1123
# Start communication using the Mandos protocol
2363
1124
# Get protocol number
2364
1125
line = self.request.makefile().readline()
2365
log.debug("Protocol version: %r", line)
1126
logger.debug(u"Protocol version: %r", line)
2366
1127
try:
2367
1128
if int(line.strip().split()[0]) > 1:
2368
raise RuntimeError(line)
2369
except (ValueError, IndexError, RuntimeError) as error:
2370
log.error("Unknown protocol version: %s", error)
1129
raise RuntimeError
1130
except (ValueError, IndexError, RuntimeError), error:
1131
logger.error(u"Unknown protocol version: %s", error)
2371
1132
return
2372
1133
2373
1134
# Start GnuTLS connection
2374
1135
try:
2375
1136
session.handshake()
2376
except gnutls.Error as error:
2377
log.warning("Handshake failed: %s", error)
1137
except gnutls.errors.GNUTLSError, error:
1138
logger.warning(u"Handshake failed: %s", error)
2378
1139
# Do not run session.bye() here: the session is not
2379
1140
# established. Just abandon the request.
2380
1141
return
2381
log.debug("Handshake succeeded")
1142
logger.debug(u"Handshake succeeded")
2382
1143
2383
1144
approval_required = False
2384
1145
try:
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,
1146
try:
1147
fpr = self.fingerprint(self.peer_certificate
1148
(session))
1149
except (TypeError, gnutls.errors.GNUTLSError), error:
1150
logger.warning(u"Bad certificate: %s", error)
1151
return
1152
logger.debug(u"Fingerprint: %s", fpr)
1153
1154
try:
1155
client = ProxyClient(child_pipe, fpr,
2409
1156
self.client_address)
2410
1157
except KeyError:
2411
1158
return
2412
2413
if client.approval_delay:
2414
delay = client.approval_delay
1159
1160
if client.approved_delay:
1161
delay = client.approved_delay
2415
1162
client.approvals_pending += 1
2416
1163
approval_required = True
2417
1164
2418
1165
while True:
2419
1166
if not client.enabled:
2420
log.info("Client %s is disabled", client.name)
1167
logger.warning(u"Client %s is disabled",
1168
client.name)
2421
1169
if self.server.use_dbus:
2422
1170
# Emit D-Bus signal
2423
client.Rejected("Disabled")
1171
client.Rejected("Disabled")
2424
1172
return
2425
2426
if client.approved or not client.approval_delay:
2427
# We are approved or approval is disabled
1173
1174
if client._approved or not client.approved_delay:
1175
#We are approved or approval is disabled
2428
1176
break
2429
elif client.approved is None:
2430
log.info("Client %s needs approval",
2431
client.name)
1177
elif client._approved is None:
1178
logger.info(u"Client %s need approval",
1179
client.name)
2432
1180
if self.server.use_dbus:
2433
1181
# Emit D-Bus signal
2434
1182
client.NeedApproval(
2435
client.approval_delay.total_seconds()
2436
* 1000, client.approved_by_default)
1183
client.approved_delay_milliseconds(),
1184
client.approved_by_default)
2437
1185
else:
2438
log.warning("Client %s was not approved",
2439
client.name)
1186
logger.warning(u"Client %s was not approved",
1187
client.name)
2440
1188
if self.server.use_dbus:
2441
1189
# Emit D-Bus signal
2442
client.Rejected("Denied")
1190
client.Rejected("Disapproved")
2443
1191
return
2444
2445
# wait until timeout or approved
1192
1193
#wait until timeout or approved
1194
#x = float(client._timedelta_to_milliseconds(delay))
2446
1195
time = datetime.datetime.now()
2447
1196
client.changedstate.acquire()
2448
client.changedstate.wait(delay.total_seconds())
1197
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2449
1198
client.changedstate.release()
2450
1199
time2 = datetime.datetime.now()
2451
1200
if (time2 - time) >= delay:
2452
1201
if not client.approved_by_default:
2453
log.warning("Client %s timed out while"
2454
" waiting for approval",
2455
client.name)
1202
logger.warning("Client %s timed out while"
1203
" waiting for approval",
1204
client.name)
2456
1205
if self.server.use_dbus:
2457
1206
# Emit D-Bus signal
2458
client.Rejected("Approval timed out")
1207
client.Rejected("Time out")
2459
1208
return
2460
1209
else:
2461
1210
break
2462
1211
else:
2463
1212
delay -= time2 - time
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)
1213
1214
sent_size = 0
1215
while sent_size < len(client.secret):
1216
# XXX handle session exception
1217
sent = session.send(client.secret[sent_size:])
1218
logger.debug(u"Sent: %d, remaining: %d",
1219
sent, len(client.secret)
1220
- (sent_size + sent))
1221
sent_size += sent
1222
1223
logger.info(u"Sending secret to %s", client.name)
1224
# bump the timeout as if seen
1225
client.checked_ok()
2474
1226
if self.server.use_dbus:
2475
1227
# Emit D-Bus signal
2476
1228
client.GotSecret()
2477
1229
2478
1230
finally:
2479
1231
if approval_required:
2480
1232
client.approvals_pending -= 1
2481
try:
2482
session.bye()
2483
except gnutls.Error as error:
2484
log.warning("GnuTLS bye failed", exc_info=error)
2485
1233
session.bye()
1234
2486
1235
@staticmethod
2487
1236
def peer_certificate(session):
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""
1237
"Return the peer's OpenPGP certificate as a bytestring"
1238
# If not an OpenPGP certificate...
1239
if (gnutls.library.functions
1240
.gnutls_certificate_type_get(session._c_object)
1241
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1242
# ...do the normal thing
1243
return session.peer_certificate
2504
1244
list_size = ctypes.c_uint(1)
2505
cert_list = (gnutls.certificate_get_peers
2506
(session, ctypes.byref(list_size)))
1245
cert_list = (gnutls.library.functions
1246
.gnutls_certificate_get_peers
1247
(session._c_object, ctypes.byref(list_size)))
2507
1248
if not bool(cert_list) and list_size.value != 0:
2508
raise gnutls.Error("error getting peer certificate")
1249
raise gnutls.errors.GNUTLSError(u"error getting peer"
1250
u" certificate")
2509
1251
if list_size.value == 0:
2510
1252
return None
2511
1253
cert = cert_list[0]
2512
1254
return ctypes.string_at(cert.data, cert.size)
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
1255
2549
1256
@staticmethod
2550
1257
def fingerprint(openpgp):
2551
1258
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2552
1259
# New GnuTLS "datum" with the OpenPGP public key
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)))
1260
datum = (gnutls.library.types
1261
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1262
ctypes.POINTER
1263
(ctypes.c_ubyte)),
1264
ctypes.c_uint(len(openpgp))))
2557
1265
# New empty GnuTLS certificate
2558
crt = gnutls.openpgp_crt_t()
2559
gnutls.openpgp_crt_init(ctypes.byref(crt))
1266
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1267
(gnutls.library.functions
1268
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2560
1269
# Import the OpenPGP public key into the certificate
2561
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2562
gnutls.OPENPGP_FMT_RAW)
1270
(gnutls.library.functions
1271
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1272
gnutls.library.constants
1273
.GNUTLS_OPENPGP_FMT_RAW))
2563
1274
# Verify the self signature in the key
2564
1275
crtverify = ctypes.c_uint()
2565
gnutls.openpgp_crt_verify_self(crt, 0,
2566
ctypes.byref(crtverify))
1276
(gnutls.library.functions
1277
.gnutls_openpgp_crt_verify_self(crt, 0,
1278
ctypes.byref(crtverify)))
2567
1279
if crtverify.value != 0:
2568
gnutls.openpgp_crt_deinit(crt)
2569
raise gnutls.CertificateSecurityError(code
2570
=crtverify.value)
1280
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1281
raise (gnutls.errors.CertificateSecurityError
1282
(u"Verify failed"))
2571
1283
# New buffer for the fingerprint
2572
1284
buf = ctypes.create_string_buffer(20)
2573
1285
buf_len = ctypes.c_size_t()
2574
1286
# Get the fingerprint from the certificate into the buffer
2575
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2576
ctypes.byref(buf_len))
1287
(gnutls.library.functions
1288
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1289
ctypes.byref(buf_len)))
2577
1290
# Deinit the certificate
2578
gnutls.openpgp_crt_deinit(crt)
1291
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2579
1292
# Convert the buffer to a Python bytestring
2580
1293
fpr = ctypes.string_at(buf, buf_len.value)
2581
1294
# Convert the bytestring to hexadecimal notation
2582
hex_fpr = binascii.hexlify(fpr).upper()
1295
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2583
1296
return hex_fpr
2584
1297
2585
1298
2586
class MultiprocessingMixIn:
1299
class MultiprocessingMixIn(object):
2587
1300
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2588
2589
1301
def sub_process_main(self, request, address):
2590
1302
try:
2591
1303
self.finish_request(request, address)
2592
except Exception:
1304
except:
2593
1305
self.handle_error(request, address)
2594
1306
self.close_request(request)
2595
1307
2596
1308
def process_request(self, request, address):
2597
1309
"""Start a new process to process the request."""
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):
1310
multiprocessing.Process(target = self.sub_process_main,
1311
args = (request, address)).start()
1312
1313
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2605
1314
""" adds a pipe to the MixIn """
2606
2607
1315
def process_request(self, request, client_address):
2608
1316
"""Overrides and wraps the original process_request().
2609
1317
2610
1318
This function creates a new pipe in self.pipe
2611
1319
"""
2612
1320
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2613
1321
2614
proc = MultiprocessingMixIn.process_request(self, request,
2615
client_address)
2616
self.child_pipe.close()
2617
self.add_pipe(parent_pipe, proc)
2618
2619
def add_pipe(self, parent_pipe, proc):
1322
super(MultiprocessingMixInWithPipe,
1323
self).process_request(request, client_address)
1324
self.add_pipe(parent_pipe)
1325
def add_pipe(self, parent_pipe):
2620
1326
"""Dummy function; override as necessary"""
2621
raise NotImplementedError()
2622
1327
pass
2623
1328
2624
1329
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2625
socketserver.TCPServer):
2626
"""IPv6-capable TCP server. Accepts None as address and/or port
2627
1330
socketserver.TCPServer, object):
1331
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1332
2628
1333
Attributes:
2629
1334
enabled: Boolean; whether this server is activated yet
2630
1335
interface: None or a network interface name (string)
2631
1336
use_ipv6: Boolean; to use IPv6 or not
2632
1337
"""
2633
2634
1338
def __init__(self, server_address, RequestHandlerClass,
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
"""
1339
interface=None, use_ipv6=True):
2641
1340
self.interface = interface
2642
1341
if use_ipv6:
2643
1342
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.
2671
1343
socketserver.TCPServer.__init__(self, server_address,
2672
1344
RequestHandlerClass)
2673
2674
1345
def server_bind(self):
2675
1346
"""This overrides the normal server_bind() function
2676
1347
to bind to an interface if one was specified, and also NOT to
2677
1348
bind to an address or port if they were not specified."""
2678
global SO_BINDTODEVICE
2679
1349
if self.interface is not None:
2680
1350
if SO_BINDTODEVICE is None:
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
1351
logger.error(u"SO_BINDTODEVICE does not exist;"
1352
u" cannot bind to interface %s",
1353
self.interface)
1354
else:
1355
try:
1356
self.socket.setsockopt(socket.SOL_SOCKET,
1357
SO_BINDTODEVICE,
1358
str(self.interface
1359
+ u'\0'))
1360
except socket.error, error:
1361
if error[0] == errno.EPERM:
1362
logger.error(u"No permission to"
1363
u" bind to interface %s",
1364
self.interface)
1365
elif error[0] == errno.ENOPROTOOPT:
1366
logger.error(u"SO_BINDTODEVICE not available;"
1367
u" cannot bind to interface %s",
1368
self.interface)
1369
else:
1370
raise
2701
1371
# Only bind(2) the socket if we really need to.
2702
1372
if self.server_address[0] or self.server_address[1]:
2703
if self.server_address[1]:
2704
self.allow_reuse_address = True
2705
1373
if not self.server_address[0]:
2706
1374
if self.address_family == socket.AF_INET6:
2707
any_address = "::" # in6addr_any
1375
any_address = u"::" # in6addr_any
2708
1376
else:
2709
any_address = "0.0.0.0" # INADDR_ANY
1377
any_address = socket.INADDR_ANY
2710
1378
self.server_address = (any_address,
2711
1379
self.server_address[1])
2712
1380
elif not self.server_address[1]:
2713
self.server_address = (self.server_address[0], 0)
1381
self.server_address = (self.server_address[0],
1382
0)
2714
1383
# if self.interface:
2715
1384
# self.server_address = (self.server_address[0],
2716
1385
# 0, # port
2722
1391
2723
1392
class MandosServer(IPv6_TCPServer):
2724
1393
"""Mandos server.
2725
1394
2726
1395
Attributes:
2727
1396
clients: set of Client objects
2728
1397
gnutls_priority GnuTLS priority string
2729
1398
use_dbus: Boolean; to emit D-Bus signals or not
2730
2731
Assumes a GLib.MainLoop event loop.
1399
1400
Assumes a gobject.MainLoop event loop.
2732
1401
"""
2733
2734
1402
def __init__(self, server_address, RequestHandlerClass,
2735
interface=None,
2736
use_ipv6=True,
2737
clients=None,
2738
gnutls_priority=None,
2739
use_dbus=True,
2740
socketfd=None):
1403
interface=None, use_ipv6=True, clients=None,
1404
gnutls_priority=None, use_dbus=True):
2741
1405
self.enabled = False
2742
1406
self.clients = clients
2743
1407
if self.clients is None:
2744
self.clients = {}
1408
self.clients = set()
2745
1409
self.use_dbus = use_dbus
2746
1410
self.gnutls_priority = gnutls_priority
2747
1411
IPv6_TCPServer.__init__(self, server_address,
2748
1412
RequestHandlerClass,
2749
interface=interface,
2750
use_ipv6=use_ipv6,
2751
socketfd=socketfd)
2752
1413
interface = interface,
1414
use_ipv6 = use_ipv6)
2753
1415
def server_activate(self):
2754
1416
if self.enabled:
2755
1417
return socketserver.TCPServer.server_activate(self)
2756
2757
1418
def enable(self):
2758
1419
self.enabled = True
2759
2760
def add_pipe(self, parent_pipe, proc):
1420
def add_pipe(self, parent_pipe):
2761
1421
# Call "handle_ipc" for both data and EOF events
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,
1422
gobject.io_add_watch(parent_pipe.fileno(),
1423
gobject.IO_IN | gobject.IO_HUP,
1424
functools.partial(self.handle_ipc,
1425
parent_pipe = parent_pipe))
1426
1427
def handle_ipc(self, source, condition, parent_pipe=None,
2772
1428
client_object=None):
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()
2777
return False
2778
1429
condition_names = {
1430
gobject.IO_IN: u"IN", # There is data to read.
1431
gobject.IO_OUT: u"OUT", # Data can be written (without
1432
# blocking).
1433
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1434
gobject.IO_ERR: u"ERR", # Error condition.
1435
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1436
# broken, usually for pipes and
1437
# sockets).
1438
}
1439
conditions_string = ' | '.join(name
1440
for cond, name in
1441
condition_names.iteritems()
1442
if cond & condition)
1443
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1444
conditions_string)
1445
2779
1446
# Read a request from the child
2780
1447
request = parent_pipe.recv()
2781
1448
command = request[0]
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:
1449
1450
if command == 'init':
1451
fpr = request[1]
1452
address = request[2]
1453
1454
for c in self.clients:
1455
if c.fingerprint == fpr:
2796
1456
client = c
2797
1457
break
2798
1458
else:
2799
log.info("Client not found for key ID: %s, address:"
2800
" %s", key_id or fpr, address)
1459
logger.warning(u"Client not found for fingerprint: %s, ad"
1460
u"dress: %s", fpr, address)
2801
1461
if self.use_dbus:
2802
1462
# Emit D-Bus signal
2803
mandos_dbus_service.ClientNotFound(key_id or fpr,
2804
address[0])
1463
mandos_dbus_service.ClientNotFound(fpr, address)
2805
1464
parent_pipe.send(False)
2806
1465
return False
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))
1466
1467
gobject.io_add_watch(parent_pipe.fileno(),
1468
gobject.IO_IN | gobject.IO_HUP,
1469
functools.partial(self.handle_ipc,
1470
parent_pipe = parent_pipe,
1471
client_object = client))
2815
1472
parent_pipe.send(True)
2816
# remove the old hook in favor of the new above hook on
2817
# same fileno
1473
# remove the old hook in favor of the new above hook on same fileno
2818
1474
return False
2819
if command == "funcall":
1475
if command == 'funcall':
2820
1476
funcname = request[1]
2821
1477
args = request[2]
2822
1478
kwargs = request[3]
2823
2824
parent_pipe.send(("data", getattr(client_object,
2825
funcname)(*args,
2826
**kwargs)))
2827
2828
if command == "getattr":
1479
1480
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1481
1482
if command == 'getattr':
2829
1483
attrname = request[1]
2830
if isinstance(client_object.__getattribute__(attrname),
2831
collections.abc.Callable):
2832
parent_pipe.send(("function", ))
1484
if callable(client_object.__getattribute__(attrname)):
1485
parent_pipe.send(('function',))
2833
1486
else:
2834
parent_pipe.send((
2835
"data", client_object.__getattribute__(attrname)))
1487
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2836
1488
2837
if command == "setattr":
1489
if command == 'setattr':
2838
1490
attrname = request[1]
2839
1491
value = request[2]
2840
1492
setattr(client_object, attrname, value)
2841
1493
2842
1494
return True
2843
1495
2844
1496
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
2946
1497
def string_to_delta(interval):
2947
1498
"""Parse a string and return a datetime.timedelta
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
1499
1500
>>> string_to_delta(u'7d')
1501
datetime.timedelta(7)
1502
>>> string_to_delta(u'60s')
1503
datetime.timedelta(0, 60)
1504
>>> string_to_delta(u'60m')
1505
datetime.timedelta(0, 3600)
1506
>>> string_to_delta(u'24h')
1507
datetime.timedelta(1)
1508
>>> string_to_delta(u'1w')
1509
datetime.timedelta(7)
1510
>>> string_to_delta(u'5m 30s')
1511
datetime.timedelta(0, 330)
2961
1512
"""
2962
2963
try:
2964
return rfc3339_duration_to_delta(interval)
2965
except ValueError:
2966
pass
2967
2968
1513
timevalue = datetime.timedelta(0)
2969
1514
for s in interval.split():
2970
1515
try:
2971
suffix = s[-1]
1516
suffix = unicode(s[-1])
2972
1517
value = int(s[:-1])
2973
if suffix == "d":
1518
if suffix == u"d":
2974
1519
delta = datetime.timedelta(value)
2975
elif suffix == "s":
1520
elif suffix == u"s":
2976
1521
delta = datetime.timedelta(0, value)
2977
elif suffix == "m":
1522
elif suffix == u"m":
2978
1523
delta = datetime.timedelta(0, 0, 0, 0, value)
2979
elif suffix == "h":
1524
elif suffix == u"h":
2980
1525
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2981
elif suffix == "w":
1526
elif suffix == u"w":
2982
1527
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2983
1528
else:
2984
raise ValueError("Unknown suffix {!r}".format(suffix))
2985
except IndexError as e:
2986
raise ValueError(*(e.args))
1529
raise ValueError(u"Unknown suffix %r" % suffix)
1530
except (ValueError, IndexError), e:
1531
raise ValueError(e.message)
2987
1532
timevalue += delta
2988
1533
return timevalue
2989
1534
2990
1535
2991
def daemon(nochdir=False, noclose=False):
1536
def if_nametoindex(interface):
1537
"""Call the C function if_nametoindex(), or equivalent
1538
1539
Note: This function cannot accept a unicode string."""
1540
global if_nametoindex
1541
try:
1542
if_nametoindex = (ctypes.cdll.LoadLibrary
1543
(ctypes.util.find_library(u"c"))
1544
.if_nametoindex)
1545
except (OSError, AttributeError):
1546
logger.warning(u"Doing if_nametoindex the hard way")
1547
def if_nametoindex(interface):
1548
"Get an interface index the hard way, i.e. using fcntl()"
1549
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1550
with contextlib.closing(socket.socket()) as s:
1551
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1552
struct.pack(str(u"16s16x"),
1553
interface))
1554
interface_index = struct.unpack(str(u"I"),
1555
ifreq[16:20])[0]
1556
return interface_index
1557
return if_nametoindex(interface)
1558
1559
1560
def daemon(nochdir = False, noclose = False):
2992
1561
"""See daemon(3). Standard BSD Unix function.
2993
1562
2994
1563
This should really exist as os.daemon, but it doesn't (yet)."""
2995
1564
if os.fork():
2996
1565
sys.exit()
2997
1566
os.setsid()
2998
1567
if not nochdir:
2999
os.chdir("/")
1568
os.chdir(u"/")
3000
1569
if os.fork():
3001
1570
sys.exit()
3002
1571
if not noclose:
3003
1572
# Close all standard open file descriptors
3004
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1573
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3005
1574
if not stat.S_ISCHR(os.fstat(null).st_mode):
3006
1575
raise OSError(errno.ENODEV,
3007
"{} not a character device"
3008
.format(os.devnull))
1576
u"%s not a character device"
1577
% os.path.devnull)
3009
1578
os.dup2(null, sys.stdin.fileno())
3010
1579
os.dup2(null, sys.stdout.fileno())
3011
1580
os.dup2(null, sys.stderr.fileno())
3014
1583
3015
1584
3016
1585
def main():
3017
1586
3018
1587
##################################################################
3019
1588
# Parsing of options, both command line and config file
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
1589
1590
parser = optparse.OptionParser(version = "%%prog %s" % version)
1591
parser.add_option("-i", u"--interface", type=u"string",
1592
metavar="IF", help=u"Bind to interface IF")
1593
parser.add_option("-a", u"--address", type=u"string",
1594
help=u"Address to listen for requests on")
1595
parser.add_option("-p", u"--port", type=u"int",
1596
help=u"Port number to receive requests on")
1597
parser.add_option("--check", action=u"store_true",
1598
help=u"Run self-test")
1599
parser.add_option("--debug", action=u"store_true",
1600
help=u"Debug mode; run in foreground and log to"
1601
u" terminal")
1602
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1603
u" priority string (see GnuTLS documentation)")
1604
parser.add_option("--servicename", type=u"string",
1605
metavar=u"NAME", help=u"Zeroconf service name")
1606
parser.add_option("--configdir", type=u"string",
1607
default=u"/etc/mandos", metavar=u"DIR",
1608
help=u"Directory to search for configuration"
1609
u" files")
1610
parser.add_option("--no-dbus", action=u"store_false",
1611
dest=u"use_dbus", help=u"Do not provide D-Bus"
1612
u" system bus interface")
1613
parser.add_option("--no-ipv6", action=u"store_false",
1614
dest=u"use_ipv6", help=u"Do not use IPv6")
1615
options = parser.parse_args()[0]
1616
1617
if options.check:
1618
import doctest
1619
doctest.testmod()
1620
sys.exit()
1621
3068
1622
# Default values for config file for server-global settings
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
1623
server_defaults = { u"interface": u"",
1624
u"address": u"",
1625
u"port": u"",
1626
u"debug": u"False",
1627
u"priority":
1628
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1629
u"servicename": u"Mandos",
1630
u"use_dbus": u"True",
1631
u"use_ipv6": u"True",
1632
}
1633
3092
1634
# Parse config file for server-global settings
3093
server_config = configparser.ConfigParser(server_defaults)
1635
server_config = configparser.SafeConfigParser(server_defaults)
3094
1636
del server_defaults
3095
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3096
# Convert the ConfigParser object to a dict
1637
server_config.read(os.path.join(options.configdir,
1638
u"mandos.conf"))
1639
# Convert the SafeConfigParser object to a dict
3097
1640
server_settings = server_config.defaults()
3098
1641
# Use the appropriate methods on the non-string config options
3099
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3100
"foreground", "zeroconf"):
3101
server_settings[option] = server_config.getboolean("DEFAULT",
1642
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1643
server_settings[option] = server_config.getboolean(u"DEFAULT",
3102
1644
option)
3103
1645
if server_settings["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)
1646
server_settings["port"] = server_config.getint(u"DEFAULT",
1647
u"port")
3116
1648
del server_config
3117
1649
3118
1650
# Override the settings from the config file with command line
3119
1651
# options, if set.
3120
for option in ("interface", "address", "port", "debug",
3121
"priority", "servicename", "configdir", "use_dbus",
3122
"use_ipv6", "debuglevel", "restore", "statedir",
3123
"socket", "foreground", "zeroconf"):
1652
for option in (u"interface", u"address", u"port", u"debug",
1653
u"priority", u"servicename", u"configdir",
1654
u"use_dbus", u"use_ipv6"):
3124
1655
value = getattr(options, option)
3125
1656
if value is not None:
3126
1657
server_settings[option] = value
3127
1658
del options
3128
1659
# Force all strings to be unicode
3129
1660
for option in server_settings.keys():
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
1661
if type(server_settings[option]) is str:
1662
server_settings[option] = unicode(server_settings[option])
3140
1663
# Now we have our good server settings in "server_settings"
3141
1664
3142
1665
##################################################################
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
1666
3149
1667
# For convenience
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
1668
debug = server_settings[u"debug"]
1669
use_dbus = server_settings[u"use_dbus"]
1670
use_ipv6 = server_settings[u"use_ipv6"]
1671
1672
if not debug:
1673
syslogger.setLevel(logging.WARNING)
1674
console.setLevel(logging.WARNING)
1675
1676
if server_settings[u"servicename"] != u"Mandos":
1677
syslogger.setFormatter(logging.Formatter
1678
(u'Mandos (%s) [%%(process)d]:'
1679
u' %%(levelname)s: %%(message)s'
1680
% server_settings[u"servicename"]))
1681
3174
1682
# Parse config file with clients
3175
client_config = configparser.ConfigParser(Client.client_defaults)
3176
client_config.read(os.path.join(server_settings["configdir"],
3177
"clients.conf"))
3178
1683
client_defaults = { u"timeout": u"1h",
1684
u"interval": u"5m",
1685
u"checker": u"fping -q -- %%(host)s",
1686
u"host": u"",
1687
u"approved_delay": u"5m",
1688
u"approved_duration": u"1s",
1689
}
1690
client_config = configparser.SafeConfigParser(client_defaults)
1691
client_config.read(os.path.join(server_settings[u"configdir"],
1692
u"clients.conf"))
1693
3179
1694
global mandos_dbus_service
3180
1695
mandos_dbus_service = None
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
1696
1697
tcp_server = MandosServer((server_settings[u"address"],
1698
server_settings[u"port"]),
1699
ClientHandler,
1700
interface=server_settings[u"interface"],
1701
use_ipv6=use_ipv6,
1702
gnutls_priority=
1703
server_settings[u"priority"],
1704
use_dbus=use_dbus)
1705
pidfilename = u"/var/run/mandos.pid"
1706
try:
1707
pidfile = open(pidfilename, u"w")
1708
except IOError:
1709
logger.error(u"Could not open file %r", pidfilename)
1710
1711
try:
1712
uid = pwd.getpwnam(u"_mandos").pw_uid
1713
gid = pwd.getpwnam(u"_mandos").pw_gid
1714
except KeyError:
1715
try:
1716
uid = pwd.getpwnam(u"mandos").pw_uid
1717
gid = pwd.getpwnam(u"mandos").pw_gid
3211
1718
except KeyError:
3212
continue
3213
else:
3214
uid = 65534
3215
gid = 65534
1719
try:
1720
uid = pwd.getpwnam(u"nobody").pw_uid
1721
gid = pwd.getpwnam(u"nobody").pw_gid
1722
except KeyError:
1723
uid = 65534
1724
gid = 65534
3216
1725
try:
3217
1726
os.setgid(gid)
3218
1727
os.setuid(uid)
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
3225
1728
except OSError, error:
1729
if error[0] != errno.EPERM:
1730
raise error
1731
1732
# Enable all possible GnuTLS debugging
3226
1733
if debug:
3227
# Enable all possible GnuTLS debugging
3228
3229
1734
# "Use a log level over 10 to enable all debugging options."
3230
1735
# - GnuTLS manual
3231
gnutls.global_set_log_level(11)
3232
3233
@gnutls.log_func
1736
gnutls.library.functions.gnutls_global_set_log_level(11)
1737
1738
@gnutls.library.types.gnutls_log_func
3234
1739
def debug_gnutls(level, string):
3235
log.debug("GnuTLS: %s",
3236
string[:-1].decode("utf-8", errors="replace"))
3237
3238
gnutls.global_set_log_function(debug_gnutls)
3239
3240
# Redirect stdin so all checkers get /dev/null
3241
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3242
os.dup2(null, sys.stdin.fileno())
3243
if null > 2:
3244
os.close(null)
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
1740
logger.debug(u"GnuTLS: %s", string[:-1])
1741
1742
(gnutls.library.functions
1743
.gnutls_global_set_log_function(debug_gnutls))
1744
3256
1745
global main_loop
3257
1746
# From the Avahi example code
3258
DBusGMainLoop(set_as_default=True)
3259
main_loop = GLib.MainLoop()
3260
if use_dbus or zeroconf:
3261
bus = dbus.SystemBus()
1747
DBusGMainLoop(set_as_default=True )
1748
main_loop = gobject.MainLoop()
1749
bus = dbus.SystemBus()
3262
1750
# End of Avahi example code
3263
1751
if use_dbus:
3264
1752
try:
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)
1753
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1754
bus, do_not_queue=True)
1755
except dbus.exceptions.NameExistsException, e:
1756
logger.error(unicode(e) + u", disabling D-Bus")
3273
1757
use_dbus = False
3274
server_settings["use_dbus"] = False
1758
server_settings[u"use_dbus"] = False
3275
1759
tcp_server.use_dbus = False
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"))
3286
3287
global multiprocessing_manager
3288
multiprocessing_manager = multiprocessing.Manager()
3289
1760
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1761
service = AvahiService(name = server_settings[u"servicename"],
1762
servicetype = u"_mandos._tcp",
1763
protocol = protocol, bus = bus)
1764
if server_settings["interface"]:
1765
service.interface = (if_nametoindex
1766
(str(server_settings[u"interface"])))
1767
3290
1768
client_class = Client
3291
1769
if use_dbus:
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)
1770
client_class = functools.partial(ClientDBus, bus = bus)
1771
def client_config_items(config, section):
1772
special_settings = {
1773
"approved_by_default":
1774
lambda: config.getboolean(section,
1775
"approved_by_default"),
1776
}
1777
for name, value in config.items(section):
3420
1778
try:
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
1779
yield (name, special_settings[name]())
1780
except KeyError:
1781
yield (name, value)
1782
1783
tcp_server.clients.update(set(
1784
client_class(name = section,
1785
config= dict(client_config_items(
1786
client_config, section)))
1787
for section in client_config.sections()))
3446
1788
if not tcp_server.clients:
3447
log.warning("No clients defined")
3448
3449
if not foreground:
3450
if pidfile is not None:
1789
logger.warning(u"No clients defined")
1790
1791
if debug:
1792
# Redirect stdin so all checkers get /dev/null
1793
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1794
os.dup2(null, sys.stdin.fileno())
1795
if null > 2:
1796
os.close(null)
1797
else:
1798
# No console logging
1799
logger.removeHandler(console)
1800
# Close all input and output, do double fork, etc.
1801
daemon()
1802
1803
try:
1804
with pidfile:
3451
1805
pid = os.getpid()
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)
1806
pidfile.write(str(pid) + "\n")
3458
1807
del pidfile
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
1808
except IOError:
1809
logger.error(u"Could not write to file %r with PID %d",
1810
pidfilename, pid)
1811
except NameError:
1812
# "pidfile" was never created
1813
pass
1814
del pidfilename
1815
1816
if not debug:
1817
signal.signal(signal.SIGINT, signal.SIG_IGN)
1818
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1819
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1820
3465
1821
if use_dbus:
3466
3467
@alternate_dbus_interfaces(
3468
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3469
class MandosDBusService(DBusObjectWithObjectManager):
1822
class MandosDBusService(dbus.service.Object):
3470
1823
"""A D-Bus proxy object"""
3471
3472
1824
def __init__(self):
3473
dbus.service.Object.__init__(self, bus, "/")
3474
3475
_interface = "se.recompile.Mandos"
3476
3477
@dbus.service.signal(_interface, signature="o")
1825
dbus.service.Object.__init__(self, bus, u"/")
1826
_interface = u"se.bsnet.fukt.Mandos"
1827
1828
@dbus.service.signal(_interface, signature=u"o")
3478
1829
def ClientAdded(self, objpath):
3479
1830
"D-Bus signal"
3480
1831
pass
3481
3482
@dbus.service.signal(_interface, signature="ss")
3483
def ClientNotFound(self, key_id, address):
1832
1833
@dbus.service.signal(_interface, signature=u"ss")
1834
def ClientNotFound(self, fingerprint, address):
3484
1835
"D-Bus signal"
3485
1836
pass
3486
3487
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3488
"true"})
3489
@dbus.service.signal(_interface, signature="os")
1837
1838
@dbus.service.signal(_interface, signature=u"os")
3490
1839
def ClientRemoved(self, objpath, name):
3491
1840
"D-Bus signal"
3492
1841
pass
3493
3494
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3495
"true"})
3496
@dbus.service.method(_interface, out_signature="ao")
1842
1843
@dbus.service.method(_interface, out_signature=u"ao")
3497
1844
def GetAllClients(self):
3498
1845
"D-Bus method"
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"})
1846
return dbus.Array(c.dbus_object_path
1847
for c in tcp_server.clients)
1848
3504
1849
@dbus.service.method(_interface,
3505
out_signature="a{oa{sv}}")
1850
out_signature=u"a{oa{sv}}")
3506
1851
def GetAllClientsWithProperties(self):
3507
1852
"D-Bus method"
3508
1853
return dbus.Dictionary(
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")
1854
((c.dbus_object_path, c.GetAll(u""))
1855
for c in tcp_server.clients),
1856
signature=u"oa{sv}")
1857
1858
@dbus.service.method(_interface, in_signature=u"o")
3515
1859
def RemoveClient(self, object_path):
3516
1860
"D-Bus method"
3517
for c in tcp_server.clients.values():
1861
for c in tcp_server.clients:
3518
1862
if c.dbus_object_path == object_path:
3519
del tcp_server.clients[c.name]
1863
tcp_server.clients.remove(c)
3520
1864
c.remove_from_connection()
3521
# Don't signal the disabling
1865
# Don't signal anything except ClientRemoved
3522
1866
c.disable(quiet=True)
3523
# Emit D-Bus signal for removal
3524
self.client_removed_signal(c)
1867
# Emit D-Bus signal
1868
self.ClientRemoved(object_path, c.name)
3525
1869
return
3526
1870
raise KeyError(object_path)
3527
1871
3528
1872
del _interface
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
1873
3566
1874
mandos_dbus_service = MandosDBusService()
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
1875
3573
1876
def cleanup():
3574
1877
"Cleanup function; run on exit"
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
1878
service.cleanup()
1879
3637
1880
while tcp_server.clients:
3638
name, client = tcp_server.clients.popitem()
1881
client = tcp_server.clients.pop()
3639
1882
if use_dbus:
3640
1883
client.remove_from_connection()
3641
# Don't signal the disabling
1884
client.disable_hook = None
1885
# Don't signal anything except ClientRemoved
3642
1886
client.disable(quiet=True)
3643
# Emit D-Bus signal for removal
3644
1887
if use_dbus:
3645
mandos_dbus_service.client_removed_signal(client)
3646
client_settings.clear()
3647
1888
# Emit D-Bus signal
1889
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1890
client.name)
1891
3648
1892
atexit.register(cleanup)
3649
3650
for client in tcp_server.clients.values():
1893
1894
for client in tcp_server.clients:
3651
1895
if use_dbus:
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
1896
# Emit D-Bus signal
1897
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1898
client.enable()
1899
3658
1900
tcp_server.enable()
3659
1901
tcp_server.server_activate()
3660
1902
3661
1903
# Find out what port we got
3662
if zeroconf:
3663
service.port = tcp_server.socket.getsockname()[1]
1904
service.port = tcp_server.socket.getsockname()[1]
3664
1905
if use_ipv6:
3665
log.info("Now listening on address %r, port %d, flowinfo %d,"
3666
" scope_id %d", *tcp_server.socket.getsockname())
1906
logger.info(u"Now listening on address %r, port %d,"
1907
" flowinfo %d, scope_id %d"
1908
% tcp_server.socket.getsockname())
3667
1909
else: # IPv4
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
1910
logger.info(u"Now listening on address %r, port %d"
1911
% tcp_server.socket.getsockname())
1912
1913
#service.interface = tcp_server.socket.getsockname()[3]
1914
3673
1915
try:
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")
1916
# From the Avahi example code
1917
try:
1918
service.activate()
1919
except dbus.exceptions.DBusException, error:
1920
logger.critical(u"DBusException: %s", error)
1921
cleanup()
1922
sys.exit(1)
1923
# End of Avahi example code
1924
1925
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1926
lambda *args, **kwargs:
1927
(tcp_server.handle_request
1928
(*args[2:], **kwargs) or True))
1929
1930
logger.debug(u"Starting main loop")
3691
1931
main_loop.run()
3692
except AvahiError as error:
3693
log.critical("Avahi Error", exc_info=error)
1932
except AvahiError, error:
1933
logger.critical(u"AvahiError: %s", error)
3694
1934
cleanup()
3695
1935
sys.exit(1)
3696
1936
except KeyboardInterrupt:
3697
1937
if debug:
3698
print("", file=sys.stderr)
3699
log.debug("Server received KeyboardInterrupt")
3700
log.debug("Server exiting")
1938
print >> sys.stderr
1939
logger.debug(u"Server received KeyboardInterrupt")
1940
logger.debug(u"Server exiting")
3701
1941
# Must run before the D-Bus bus name gets deregistered
3702
1942
cleanup()
3703
1943
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:
1944
if __name__ == '__main__':
1945
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0