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- Committer: Teddy Hogeborn
- Date: 2010-10-11 17:32:23 UTC
- mfrom: (237.7.6 mandos-local)
- Revision ID: teddy@fukt.bsnet.se-20101011173223-tgrfs9i3dweqt0kn
Merge from trunk.
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
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
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
46
37
import socket
47
import argparse
38
import optparse
48
39
import datetime
49
40
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
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
54
48
import sys
55
49
import re
56
50
import os
65
59
import struct
66
60
import fcntl
67
61
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
62
import cPickle as pickle
72
63
import multiprocessing
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
79
64
80
65
import dbus
81
66
import dbus.service
82
from gi.repository import GLib
67
import gobject
68
import avahi
83
69
from dbus.mainloop.glib import DBusGMainLoop
84
70
import ctypes
85
71
import ctypes.util
86
72
import xml.dom.minidom
87
73
import inspect
88
74
89
# Try to find the value of SO_BINDTODEVICE:
90
75
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
93
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
77
except AttributeError:
95
78
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
98
79
from IN import SO_BINDTODEVICE
99
80
except ImportError:
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.10"
118
stored_state_file = "clients.pickle"
119
120
logger = logging.getLogger()
121
syslogger = None
122
123
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
126
except (OSError, AttributeError):
127
128
def if_nametoindex(interface):
129
"Get an interface index the hard way, i.e. using fcntl()"
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
with contextlib.closing(socket.socket()) as s:
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
135
return interface_index
136
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
def initlogger(debug, level=logging.WARNING):
155
"""init logger and add loglevel"""
156
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
syslogger.setFormatter(logging.Formatter
162
('Mandos [%(process)d]: %(levelname)s:'
163
' %(message)s'))
164
logger.addHandler(syslogger)
165
166
if debug:
167
console = logging.StreamHandler()
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
' [%(process)d]:'
170
' %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(console)
173
logger.setLevel(level)
174
175
176
class PGPError(Exception):
177
"""Exception if encryption/decryption fails"""
178
pass
179
180
181
class PGPEngine(object):
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
def __init__(self):
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
199
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
205
def __enter__(self):
206
return self
207
208
def __exit__(self, exc_type, exc_value, traceback):
209
self._cleanup()
210
return False
211
212
def __del__(self):
213
self._cleanup()
214
215
def _cleanup(self):
216
if self.tempdir is not None:
217
# Delete contents of tempdir
218
for root, dirs, files in os.walk(self.tempdir,
219
topdown = False):
220
for filename in files:
221
os.remove(os.path.join(root, filename))
222
for dirname in dirs:
223
os.rmdir(os.path.join(root, dirname))
224
# Remove tempdir
225
os.rmdir(self.tempdir)
226
self.tempdir = None
227
228
def password_encode(self, password):
229
# Passphrase can not be empty and can not contain newlines or
230
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
237
return encoded
238
239
def encrypt(self, data, password):
240
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
243
passfile.write(passphrase)
244
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
246
'--passphrase-file',
247
passfile.name]
248
+ self.gnupgargs,
249
stdin = subprocess.PIPE,
250
stdout = subprocess.PIPE,
251
stderr = subprocess.PIPE)
252
ciphertext, err = proc.communicate(input = data)
253
if proc.returncode != 0:
254
raise PGPError(err)
255
return ciphertext
256
257
def decrypt(self, data, password):
258
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
261
passfile.write(passphrase)
262
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
264
'--passphrase-file',
265
passfile.name]
266
+ self.gnupgargs,
267
stdin = subprocess.PIPE,
268
stdout = subprocess.PIPE,
269
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
271
if proc.returncode != 0:
272
raise PGPError(err)
273
return decrypted_plaintext
274
275
# Pretend that we have an Avahi module
276
class Avahi(object):
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
298
avahi = Avahi()
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.2"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
299
101
300
102
class AvahiError(Exception):
301
103
def __init__(self, value, *args, **kwargs):
302
104
self.value = value
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
306
108
307
109
class AvahiServiceError(AvahiError):
308
110
pass
309
111
310
311
112
class AvahiGroupError(AvahiError):
312
113
pass
313
114
318
119
Attributes:
319
120
interface: integer; avahi.IF_UNSPEC or an interface index.
320
121
Used to optionally bind to the specified interface.
321
name: string; Example: 'Mandos'
322
type: string; Example: '_mandos._tcp'.
323
See <https://www.iana.org/assignments/service-names-port-numbers>
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
324
125
port: integer; what port to announce
325
126
TXT: list of strings; TXT record for the service
326
127
domain: string; Domain to publish on, default to .local if empty.
332
133
server: D-Bus Server
333
134
bus: dbus.SystemBus()
334
135
"""
335
336
def __init__(self,
337
interface = avahi.IF_UNSPEC,
338
name = None,
339
servicetype = None,
340
port = None,
341
TXT = None,
342
domain = "",
343
host = "",
344
max_renames = 32768,
345
protocol = avahi.PROTO_UNSPEC,
346
bus = None):
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
347
140
self.interface = interface
348
141
self.name = name
349
142
self.type = servicetype
357
150
self.group = None # our entry group
358
151
self.server = None
359
152
self.bus = bus
360
self.entry_group_state_changed_match = None
361
362
def rename(self, remove=True):
153
def rename(self):
363
154
"""Derived from the Avahi example code"""
364
155
if self.rename_count >= self.max_renames:
365
logger.critical("No suitable Zeroconf service name found"
366
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
367
158
self.rename_count)
368
raise AvahiServiceError("Too many renames")
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
371
174
self.rename_count += 1
372
logger.info("Changing Zeroconf service name to %r ...",
373
self.name)
374
if remove:
375
self.remove()
376
try:
377
self.add()
378
except dbus.exceptions.DBusException as error:
379
if (error.get_dbus_name()
380
== "org.freedesktop.Avahi.CollisionError"):
381
logger.info("Local Zeroconf service name collision.")
382
return self.rename(remove=False)
383
else:
384
logger.critical("D-Bus Exception", exc_info=error)
385
self.cleanup()
386
os._exit(1)
387
388
175
def remove(self):
389
176
"""Derived from the Avahi example code"""
390
if self.entry_group_state_changed_match is not None:
391
self.entry_group_state_changed_match.remove()
392
self.entry_group_state_changed_match = None
393
177
if self.group is not None:
394
178
self.group.Reset()
395
396
179
def add(self):
397
180
"""Derived from the Avahi example code"""
398
self.remove()
399
181
if self.group is None:
400
182
self.group = dbus.Interface(
401
183
self.bus.get_object(avahi.DBUS_NAME,
402
184
self.server.EntryGroupNew()),
403
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
404
self.entry_group_state_changed_match = (
405
self.group.connect_to_signal(
406
'StateChanged', self.entry_group_state_changed))
407
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
408
190
self.name, self.type)
409
191
self.group.AddService(
410
192
self.interface,
415
197
dbus.UInt16(self.port),
416
198
avahi.string_array_to_txt_array(self.TXT))
417
199
self.group.Commit()
418
419
200
def entry_group_state_changed(self, state, error):
420
201
"""Derived from the Avahi example code"""
421
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
422
203
423
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
424
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
425
206
elif state == avahi.ENTRY_GROUP_COLLISION:
426
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
427
208
self.rename()
428
209
elif state == avahi.ENTRY_GROUP_FAILURE:
429
logger.critical("Avahi: Error in group state changed %s",
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
432
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
433
214
def cleanup(self):
434
215
"""Derived from the Avahi example code"""
435
216
if self.group is not None:
436
try:
437
self.group.Free()
438
except (dbus.exceptions.UnknownMethodException,
439
dbus.exceptions.DBusException):
440
pass
217
self.group.Free()
441
218
self.group = None
442
self.remove()
443
444
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
445
220
"""Derived from the Avahi example code"""
446
logger.debug("Avahi server state change: %i", state)
447
bad_states = {
448
avahi.SERVER_INVALID: "Zeroconf server invalid",
449
avahi.SERVER_REGISTERING: None,
450
avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
avahi.SERVER_FAILURE: "Zeroconf server failure",
452
}
453
if state in bad_states:
454
if bad_states[state] is not None:
455
if error is None:
456
logger.error(bad_states[state])
457
else:
458
logger.error(bad_states[state] + ": %r", error)
459
self.cleanup()
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
460
225
elif state == avahi.SERVER_RUNNING:
461
try:
462
self.add()
463
except dbus.exceptions.DBusException as error:
464
if (error.get_dbus_name()
465
== "org.freedesktop.Avahi.CollisionError"):
466
logger.info("Local Zeroconf service name"
467
" collision.")
468
return self.rename(remove=False)
469
else:
470
logger.critical("D-Bus Exception", exc_info=error)
471
self.cleanup()
472
os._exit(1)
473
else:
474
if error is None:
475
logger.debug("Unknown state: %r", state)
476
else:
477
logger.debug("Unknown state: %r: %r", state, error)
478
226
self.add()
479
227
def activate(self):
480
228
"""Derived from the Avahi example code"""
481
229
if self.server is None:
482
230
self.server = dbus.Interface(
483
231
self.bus.get_object(avahi.DBUS_NAME,
484
avahi.DBUS_PATH_SERVER,
485
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
486
233
avahi.DBUS_INTERFACE_SERVER)
487
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
489
236
self.server_state_changed(self.server.GetState())
490
237
491
238
492
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
494
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
499
return ret
500
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
505
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
509
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
516
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
519
520
# Constants
521
E_SUCCESS = 0
522
E_INTERRUPTED = -52
523
E_AGAIN = -28
524
CRT_OPENPGP = 2
525
CLIENT = 2
526
SHUT_RDWR = 0
527
CRD_CERTIFICATE = 1
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
530
531
# Types
532
class session_int(ctypes.Structure):
533
_fields_ = []
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
536
_fields_ = []
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
544
_fields_ = []
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
551
552
# Exceptions
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
561
# gnutls.strerror()
562
self.code = code
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
566
message, *args)
567
568
class CertificateSecurityError(Error):
569
pass
570
571
# Classes
572
class Credentials(object):
573
def __init__(self):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
578
579
def __del__(self):
580
gnutls.certificate_free_credentials(self._c_object)
581
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
589
True)
590
self.socket = socket
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
595
ctypes.c_void_p))
596
self.credentials = credentials
597
598
def __del__(self):
599
gnutls.deinit(self._c_object)
600
601
def handshake(self):
602
return gnutls.handshake(self._c_object)
603
604
def send(self, data):
605
data = bytes(data)
606
data_len = len(data)
607
while data_len > 0:
608
data_len -= gnutls.record_send(self._c_object,
609
data[-data_len:],
610
data_len)
611
612
def bye(self):
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
619
if result >= 0:
620
return result
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
628
while result < 0:
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
632
return result
633
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
636
637
# Functions
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
642
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
646
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
650
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
653
ctypes.c_size_t]
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
656
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
662
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
667
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
671
ctypes.c_int]
672
handshake_set_private_extensions.restype = None
673
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
676
ctypes.c_void_p]
677
credentials_set.restype = _error_code
678
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
682
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
686
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
695
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
699
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
703
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
708
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
712
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
717
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
754
gnutls = GnuTLS()
755
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
759
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
762
"""
763
connection.send(func(*args, **kwargs))
764
connection.close()
765
766
239
class Client(object):
767
240
"""A representation of a client host served by this server.
768
241
769
242
Attributes:
770
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
771
244
approval_delay: datetime.timedelta(); Time to wait for approval
772
245
approval_duration: datetime.timedelta(); Duration of one approval
773
246
checker: subprocess.Popen(); a running checker process used
774
247
to see if the client lives.
775
248
'None' if no process is running.
776
checker_callback_tag: a GLib event source tag, or None
249
checker_callback_tag: a gobject event source tag, or None
777
250
checker_command: string; External command which is run to check
778
251
if client lives. %() expansions are done at
779
252
runtime with vars(self) as dict, so that for
780
253
instance %(name)s can be used in the command.
781
checker_initiator_tag: a GLib event source tag, or None
254
checker_initiator_tag: a gobject event source tag, or None
782
255
created: datetime.datetime(); (UTC) object creation
783
client_structure: Object describing what attributes a client has
784
and is used for storing the client at exit
785
256
current_checker_command: string; current running checker_command
786
disable_initiator_tag: a GLib event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
787
259
enabled: bool()
788
260
fingerprint: string (40 or 32 hexadecimal digits); used to
789
261
uniquely identify the client
791
263
interval: datetime.timedelta(); How often to start a new checker
792
264
last_approval_request: datetime.datetime(); (UTC) or None
793
265
last_checked_ok: datetime.datetime(); (UTC) or None
794
last_checker_status: integer between 0 and 255 reflecting exit
795
status of last checker. -1 reflects crashed
796
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
last_enabled: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
800
267
name: string; from the config file, used in log messages and
801
268
D-Bus identifiers
802
269
secret: bytestring; sent verbatim (over TLS) to client
803
270
timeout: datetime.timedelta(); How long from last_checked_ok
804
271
until this client is disabled
805
extended_timeout: extra long timeout when secret has been sent
806
272
runtime_expansions: Allowed attributes for runtime expansion.
807
expires: datetime.datetime(); time (UTC) when a client will be
808
disabled, or None
809
server_settings: The server_settings dict from main()
810
273
"""
811
274
812
runtime_expansions = ("approval_delay", "approval_duration",
813
"created", "enabled", "expires",
814
"fingerprint", "host", "interval",
815
"last_approval_request", "last_checked_ok",
816
"last_enabled", "name", "timeout")
817
client_defaults = {
818
"timeout": "PT5M",
819
"extended_timeout": "PT15M",
820
"interval": "PT2M",
821
"checker": "fping -q -- %%(host)s",
822
"host": "",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
826
"enabled": "True",
827
}
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
828
279
829
280
@staticmethod
830
def config_parser(config):
831
"""Construct a new dict of client settings of this form:
832
{ client_name: {setting_name: value, ...}, ...}
833
with exceptions for any special settings as defined above.
834
NOTE: Must be a pure function. Must return the same result
835
value given the same arguments.
836
"""
837
settings = {}
838
for client_name in config.sections():
839
section = dict(config.items(client_name))
840
client = settings[client_name] = {}
841
842
client["host"] = section["host"]
843
# Reformat values from string types to Python types
844
client["approved_by_default"] = config.getboolean(
845
client_name, "approved_by_default")
846
client["enabled"] = config.getboolean(client_name,
847
"enabled")
848
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
client["fingerprint"] = (section["fingerprint"].upper()
853
.replace(" ", ""))
854
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
858
elif "secfile" in section:
859
with open(os.path.expanduser(os.path.expandvars
860
(section["secfile"])),
861
"rb") as secfile:
862
client["secret"] = secfile.read()
863
else:
864
raise TypeError("No secret or secfile for section {}"
865
.format(section))
866
client["timeout"] = string_to_delta(section["timeout"])
867
client["extended_timeout"] = string_to_delta(
868
section["extended_timeout"])
869
client["interval"] = string_to_delta(section["interval"])
870
client["approval_delay"] = string_to_delta(
871
section["approval_delay"])
872
client["approval_duration"] = string_to_delta(
873
section["approval_duration"])
874
client["checker_command"] = section["checker"]
875
client["last_approval_request"] = None
876
client["last_checked_ok"] = None
877
client["last_checker_status"] = -2
878
879
return settings
880
881
def __init__(self, settings, name = None, server_settings=None):
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
882
302
self.name = name
883
if server_settings is None:
884
server_settings = {}
885
self.server_settings = server_settings
886
# adding all client settings
887
for setting, value in settings.items():
888
setattr(self, setting, value)
889
890
if self.enabled:
891
if not hasattr(self, "last_enabled"):
892
self.last_enabled = datetime.datetime.utcnow()
893
if not hasattr(self, "expires"):
894
self.expires = (datetime.datetime.utcnow()
895
+ self.timeout)
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
306
# Uppercase and remove spaces from fingerprint for later
307
# comparison purposes with return value from the fingerprint()
308
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
896
319
else:
897
self.last_enabled = None
898
self.expires = None
899
900
logger.debug("Creating client %r", self.name)
901
logger.debug(" Fingerprint: %s", self.fingerprint)
902
self.created = settings.get("created",
903
datetime.datetime.utcnow())
904
905
# attributes specific for this server instance
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
906
331
self.checker = None
907
332
self.checker_initiator_tag = None
908
333
self.disable_initiator_tag = None
909
334
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
910
336
self.current_checker_command = None
911
self.approved = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
912
341
self.approvals_pending = 0
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
917
if not attr.startswith("_")]
918
self.client_structure.append("client_structure")
919
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
922
if not name.startswith("_"):
923
self.client_structure.append(name)
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
924
347
925
# Send notice to process children that client state has changed
926
348
def send_changedstate(self):
927
with self.changedstate:
928
self.changedstate.notify_all()
929
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
930
353
def enable(self):
931
354
"""Start this client's checker and timeout hooks"""
932
if getattr(self, "enabled", False):
355
if getattr(self, u"enabled", False):
933
356
# Already enabled
934
357
return
935
self.expires = datetime.datetime.utcnow() + self.timeout
936
self.enabled = True
358
self.send_changedstate()
937
359
self.last_enabled = datetime.datetime.utcnow()
938
self.init_checker()
939
self.send_changedstate()
360
# Schedule a new checker to be started an 'interval' from now,
361
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
365
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
940
372
941
373
def disable(self, quiet=True):
942
374
"""Disable this client."""
943
375
if not getattr(self, "enabled", False):
944
376
return False
945
377
if not quiet:
946
logger.info("Disabling client %s", self.name)
947
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
949
383
self.disable_initiator_tag = None
950
self.expires = None
951
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
953
386
self.checker_initiator_tag = None
954
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
955
390
self.enabled = False
956
if not quiet:
957
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
391
# Do not run this again if called by a gobject.timeout_add
959
392
return False
960
393
961
394
def __del__(self):
395
self.disable_hook = None
962
396
self.disable()
963
397
964
def init_checker(self):
965
# Schedule a new checker to be started an 'interval' from now,
966
# and every interval from then on.
967
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
971
self.start_checker)
972
# Schedule a disable() when 'timeout' has passed
973
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
977
# Also start a new checker *right now*.
978
self.start_checker()
979
980
def checker_callback(self, source, condition, connection,
981
command):
398
def checker_callback(self, pid, condition, command):
982
399
"""The checker has completed, so take appropriate actions."""
983
400
self.checker_callback_tag = None
984
401
self.checker = None
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
987
connection.close()
988
989
if returncode >= 0:
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
992
if self.last_checker_status == 0:
993
logger.info("Checker for %(name)s succeeded",
402
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
994
406
vars(self))
995
407
self.checked_ok()
996
408
else:
997
logger.info("Checker for %(name)s failed", vars(self))
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
998
411
else:
999
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
logger.warning("Checker for %(name)s crashed?",
412
logger.warning(u"Checker for %(name)s crashed?",
1002
413
vars(self))
1003
return False
1004
414
1005
415
def checked_ok(self):
1006
"""Assert that the client has been seen, alive and well."""
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
1007
421
self.last_checked_ok = datetime.datetime.utcnow()
1008
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
self.bump_timeout()
1011
1012
def bump_timeout(self, timeout=None):
1013
"""Bump up the timeout for this client."""
1014
if timeout is None:
1015
timeout = self.timeout
1016
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
1018
self.disable_initiator_tag = None
1019
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
1022
self.expires = datetime.datetime.utcnow() + timeout
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
1023
426
1024
427
def need_approval(self):
1025
428
self.last_approval_request = datetime.datetime.utcnow()
1030
433
If a checker already exists, leave it running and do
1031
434
nothing."""
1032
435
# The reason for not killing a running checker is that if we
1033
# did that, and if a checker (for some reason) started running
1034
# slowly and taking more than 'interval' time, then the client
1035
# would inevitably timeout, since no checker would get a
1036
# chance to run to completion. If we instead leave running
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
1037
440
# checkers alone, the checker would have to take more time
1038
441
# than 'timeout' for the client to be disabled, which is as it
1039
442
# should be.
1040
443
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
1043
self.checker.join()
1044
self.checker = None
444
# If a checker exists, make sure it is not a zombie
445
try:
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
if pid:
453
logger.warning(u"Checker was a zombie")
454
gobject.source_remove(self.checker_callback_tag)
455
self.checker_callback(pid, status,
456
self.current_checker_command)
1045
457
# Start a new checker if needed
1046
458
if self.checker is None:
1047
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
1051
459
try:
1052
command = self.checker_command % escaped_attrs
1053
except TypeError as error:
1054
logger.error('Could not format string "%s"',
1055
self.checker_command,
1056
exc_info=error)
1057
return True # Try again later
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
1058
478
self.current_checker_command = command
1059
logger.info("Starting checker %r for %s", command,
1060
self.name)
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1067
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
479
try:
480
logger.info(u"Starting checker %r for %s",
481
command, self.name)
482
# We don't need to redirect stdout and stderr, since
483
# in normal mode, that is already done by daemon(),
484
# and in debug mode we don't want to. (Stdin is
485
# always replaced by /dev/null.)
486
self.checker = subprocess.Popen(command,
487
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
495
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
502
# Re-run this periodically if run by gobject.timeout_add
1085
503
return True
1086
504
1087
505
def stop_checker(self):
1088
506
"""Force the checker process, if any, to stop."""
1089
507
if self.checker_callback_tag:
1090
GLib.source_remove(self.checker_callback_tag)
508
gobject.source_remove(self.checker_callback_tag)
1091
509
self.checker_callback_tag = None
1092
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
1093
511
return
1094
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
516
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
519
if error.errno != errno.ESRCH: # No such process
520
raise
1096
521
self.checker = None
1097
522
1098
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
1103
525
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
526
become properties on the D-Bus.
1105
527
1112
534
"""
1113
535
# Encoding deeply encoded byte arrays is not supported yet by the
1114
536
# "Set" method, so we fail early here:
1115
if byte_arrays and signature != "ay":
1116
raise ValueError("Byte arrays not supported for non-'ay'"
1117
" signature {!r}".format(signature))
1118
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
1119
540
def decorator(func):
1120
541
func._dbus_is_property = True
1121
542
func._dbus_interface = dbus_interface
1122
543
func._dbus_signature = signature
1123
544
func._dbus_access = access
1124
545
func._dbus_name = func.__name__
1125
if func._dbus_name.endswith("_dbus_property"):
546
if func._dbus_name.endswith(u"_dbus_property"):
1126
547
func._dbus_name = func._dbus_name[:-14]
1127
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
return func
1129
1130
return decorator
1131
1132
1133
def dbus_interface_annotations(dbus_interface):
1134
"""Decorator for marking functions returning interface annotations
1135
1136
Usage:
1137
1138
@dbus_interface_annotations("org.example.Interface")
1139
def _foo(self): # Function name does not matter
1140
return {"org.freedesktop.DBus.Deprecated": "true",
1141
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
"false"}
1143
"""
1144
1145
def decorator(func):
1146
func._dbus_is_interface = True
1147
func._dbus_interface = dbus_interface
1148
func._dbus_name = dbus_interface
1149
return func
1150
1151
return decorator
1152
1153
1154
def dbus_annotations(annotations):
1155
"""Decorator to annotate D-Bus methods, signals or properties
1156
Usage:
1157
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
@dbus_service_property("org.example.Interface", signature="b",
1162
access="r")
1163
def Property_dbus_property(self):
1164
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
"""
1168
1169
def decorator(func):
1170
func._dbus_annotations = annotations
1171
return func
1172
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
1173
550
return decorator
1174
551
1175
552
1176
553
class DBusPropertyException(dbus.exceptions.DBusException):
1177
554
"""A base class for D-Bus property-related exceptions
1178
555
"""
1179
pass
556
def __unicode__(self):
557
return unicode(str(self))
1180
558
1181
559
1182
560
class DBusPropertyAccessException(DBusPropertyException):
1191
569
pass
1192
570
1193
571
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
1196
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
1199
"""
1200
1201
@staticmethod
1202
def _is_dbus_thing(thing):
1203
"""Returns a function testing if an attribute is a D-Bus thing
1204
1205
If called like _is_dbus_thing("method") it returns a function
1206
suitable for use as predicate to inspect.getmembers().
1207
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1209
False)
1210
1211
def _get_all_dbus_things(self, thing):
1212
"""Returns a generator of (name, attribute) pairs
1213
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
1215
athing.__get__(self))
1216
for cls in self.__class__.__mro__
1217
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1226
1227
Inserts annotation tags on methods and signals.
1228
"""
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
connection)
1231
try:
1232
document = xml.dom.minidom.parseString(xmlstring)
1233
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1238
annots = dict()
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1248
"annotation")
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1259
)).items():
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1271
== "out"):
1272
arg.setAttribute("name",
1273
"xml_data")
1274
xmlstring = document.toxml("utf-8")
1275
document.unlink()
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1279
exc_info=error)
1280
return xmlstring
1281
1282
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
572
class DBusObjectWithProperties(dbus.service.Object):
1284
573
"""A D-Bus object with properties.
1285
574
1286
575
Classes inheriting from this can use the dbus_service_property
1287
576
decorator to expose methods as D-Bus properties. It exposes the
1288
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
578
"""
1290
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
1291
591
def _get_dbus_property(self, interface_name, property_name):
1292
592
"""Returns a bound method if one exists which is a D-Bus
1293
593
property with the specified name and interface.
1294
594
"""
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
1298
if (value._dbus_name == property_name
1299
and value._dbus_interface == interface_name):
1300
return value.__get__(self)
1301
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
1302
605
# No such property
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1305
1306
@classmethod
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1312
for attr in dir(x))
1313
if name is not None)
1314
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
in_signature="ss",
1317
out_signature="v")
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
1318
612
def Get(self, interface_name, property_name):
1319
613
"""Standard D-Bus property Get() method, see D-Bus standard.
1320
614
"""
1321
615
prop = self._get_dbus_property(interface_name, property_name)
1322
if prop._dbus_access == "write":
616
if prop._dbus_access == u"write":
1323
617
raise DBusPropertyAccessException(property_name)
1324
618
value = prop()
1325
if not hasattr(value, "variant_level"):
619
if not hasattr(value, u"variant_level"):
1326
620
return value
1327
621
return type(value)(value, variant_level=value.variant_level+1)
1328
622
1329
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1330
624
def Set(self, interface_name, property_name, value):
1331
625
"""Standard D-Bus property Set() method, see D-Bus standard.
1332
626
"""
1333
627
prop = self._get_dbus_property(interface_name, property_name)
1334
if prop._dbus_access == "read":
628
if prop._dbus_access == u"read":
1335
629
raise DBusPropertyAccessException(property_name)
1336
if prop._dbus_get_args_options["byte_arrays"]:
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1337
631
# The byte_arrays option is not supported yet on
1338
632
# signatures other than "ay".
1339
if prop._dbus_signature != "ay":
1340
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
1342
.format(prop._dbus_signature))
1343
value = dbus.ByteArray(b''.join(chr(byte)
1344
for byte in value))
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
1345
637
prop(value)
1346
638
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
1349
out_signature="a{sv}")
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1350
641
def GetAll(self, interface_name):
1351
642
"""Standard D-Bus property GetAll() method, see D-Bus
1352
643
standard.
1353
644
1354
645
Note: Will not include properties with access="write".
1355
646
"""
1356
properties = {}
1357
for name, prop in self._get_all_dbus_things("property"):
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1358
649
if (interface_name
1359
650
and interface_name != prop._dbus_interface):
1360
651
# Interface non-empty but did not match
1361
652
continue
1362
653
# Ignore write-only properties
1363
if prop._dbus_access == "write":
654
if prop._dbus_access == u"write":
1364
655
continue
1365
656
value = prop()
1366
if not hasattr(value, "variant_level"):
1367
properties[name] = value
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1368
659
continue
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
1371
return dbus.Dictionary(properties, signature="sv")
1372
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
standard.
1378
"""
1379
pass
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
1380
663
1381
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
out_signature="s",
665
out_signature=u"s",
1383
666
path_keyword='object_path',
1384
667
connection_keyword='connection')
1385
668
def Introspect(self, object_path, connection):
1386
"""Overloading of standard D-Bus method.
1387
1388
Inserts property tags and interface annotation tags.
669
"""Standard D-Bus method, overloaded to insert property tags.
1389
670
"""
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1393
673
try:
1394
674
document = xml.dom.minidom.parseString(xmlstring)
1395
1396
675
def make_tag(document, name, prop):
1397
e = document.createElement("property")
1398
e.setAttribute("name", name)
1399
e.setAttribute("type", prop._dbus_signature)
1400
e.setAttribute("access", prop._dbus_access)
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
1401
680
return e
1402
1403
for if_tag in document.getElementsByTagName("interface"):
1404
# Add property tags
681
for if_tag in document.getElementsByTagName(u"interface"):
1405
682
for tag in (make_tag(document, name, prop)
1406
683
for name, prop
1407
in self._get_all_dbus_things("property")
684
in self._get_all_dbus_properties()
1408
685
if prop._dbus_interface
1409
== if_tag.getAttribute("name")):
686
== if_tag.getAttribute(u"name")):
1410
687
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1413
annots = dict()
1414
for name, prop in self._get_all_dbus_things(
1415
"property"):
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1423
"annotation")
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
1427
688
# Add the names to the return values for the
1428
689
# "org.freedesktop.DBus.Properties" methods
1429
if (if_tag.getAttribute("name")
1430
== "org.freedesktop.DBus.Properties"):
1431
for cn in if_tag.getElementsByTagName("method"):
1432
if cn.getAttribute("name") == "Get":
1433
for arg in cn.getElementsByTagName("arg"):
1434
if (arg.getAttribute("direction")
1435
== "out"):
1436
arg.setAttribute("name", "value")
1437
elif cn.getAttribute("name") == "GetAll":
1438
for arg in cn.getElementsByTagName("arg"):
1439
if (arg.getAttribute("direction")
1440
== "out"):
1441
arg.setAttribute("name", "props")
1442
xmlstring = document.toxml("utf-8")
1443
document.unlink()
1444
except (AttributeError, xml.dom.DOMException,
1445
xml.parsers.expat.ExpatError) as error:
1446
logger.error("Failed to override Introspection method",
1447
exc_info=error)
1448
return xmlstring
1449
1450
try:
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1457
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1462
1463
Note: No signals are sent automatically; they must be sent
1464
manually.
1465
"""
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1471
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1479
pass
1480
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1487
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1490
"""
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
object_path,
1493
connection)
1494
try:
1495
document = xml.dom.minidom.parseString(xmlstring)
1496
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute(
1508
"name",
1509
"objpath_interfaces"
1510
"_and_properties")
1511
xmlstring = document.toxml("utf-8")
1512
document.unlink()
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1517
return xmlstring
1518
1519
def datetime_to_dbus(dt, variant_level=0):
1520
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
if dt is None:
1522
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1524
1525
1526
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1527
"""A class decorator; applied to a subclass of
1528
dbus.service.Object, it will add alternate D-Bus attributes with
1529
interface names according to the "alt_interface_names" mapping.
1530
Usage:
1531
1532
@alternate_dbus_interfaces({"org.example.Interface":
1533
"net.example.AlternateInterface"})
1534
class SampleDBusObject(dbus.service.Object):
1535
@dbus.service.method("org.example.Interface")
1536
def SampleDBusMethod():
1537
pass
1538
1539
The above "SampleDBusMethod" on "SampleDBusObject" will be
1540
reachable via two interfaces: "org.example.Interface" and
1541
"net.example.AlternateInterface", the latter of which will have
1542
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1543
"true", unless "deprecate" is passed with a False value.
1544
1545
This works for methods and signals, and also for D-Bus properties
1546
(from DBusObjectWithProperties) and interfaces (from the
1547
dbus_interface_annotations decorator).
1548
"""
1549
1550
def wrapper(cls):
1551
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1553
attr = {}
1554
interface_names = set()
1555
# Go though all attributes of the class
1556
for attrname, attribute in inspect.getmembers(cls):
1557
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
# with the wrong interface name
1559
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1562
continue
1563
# Create an alternate D-Bus interface name based on
1564
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1567
interface_names.add(alt_interface)
1568
# Is this a D-Bus signal?
1569
if getattr(attribute, "_dbus_is_signal", False):
1570
# Extract the original non-method undecorated
1571
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1574
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1577
else:
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1582
# Create a new, but exactly alike, function
1583
# object, and decorate it to be a new D-Bus signal
1584
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
1589
# Copy annotations, if any
1590
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1593
except AttributeError:
1594
pass
1595
# Define a creator of a function to call both the
1596
# original and alternate functions, so both the
1597
# original and alternate signals gets sent when
1598
# the function is called
1599
def fixscope(func1, func2):
1600
"""This function is a scope container to pass
1601
func1 and func2 to the "call_both" function
1602
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
def call_both(*args, **kwargs):
1606
"""This function will emit two D-Bus
1607
signals by calling func1 and func2"""
1608
func1(*args, **kwargs)
1609
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1614
1615
return call_both
1616
# Create the "call_both" function and add it to
1617
# the class
1618
attr[attrname] = fixscope(attribute, new_function)
1619
# Is this a D-Bus method?
1620
elif getattr(attribute, "_dbus_is_method", False):
1621
# Create a new, but exactly alike, function
1622
# object. Decorate it to be a new D-Bus method
1623
# with the alternate D-Bus interface name. Add it
1624
# to the class.
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1631
# Copy annotations, if any
1632
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1635
except AttributeError:
1636
pass
1637
# Is this a D-Bus property?
1638
elif getattr(attribute, "_dbus_is_property", False):
1639
# Create a new, but exactly alike, function
1640
# object, and decorate it to be a new D-Bus
1641
# property with the alternate D-Bus interface
1642
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1647
["byte_arrays"])
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1650
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
# Is this a D-Bus interface?
1656
elif getattr(attribute, "_dbus_is_interface", False):
1657
# Create a new, but exactly alike, function
1658
# object. Decorate it to be a new D-Bus interface
1659
# with the alternate D-Bus interface name. Add it
1660
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1664
if deprecate:
1665
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1667
for interface_name in interface_names:
1668
1669
@dbus_interface_annotations(interface_name)
1670
def func(self):
1671
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1673
# Find an unused name
1674
for aname in (iname.format(i)
1675
for i in itertools.count()):
1676
if aname not in attr:
1677
attr[aname] = func
1678
break
1679
if interface_names:
1680
# Replace the class with a new subclass of it with
1681
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1684
(cls, ), attr)
1685
else:
1686
cls = type("{}Alternate".format(cls.__name__),
1687
(cls, ), attr)
1688
return cls
1689
1690
return wrapper
1691
1692
1693
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
1695
712
class ClientDBus(Client, DBusObjectWithProperties):
1696
713
"""A Client class using D-Bus
1697
714
1701
718
"""
1702
719
1703
720
runtime_expansions = (Client.runtime_expansions
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
721
+ (u"dbus_object_path",))
1707
722
1708
723
# dbus.service.Object doesn't use super(), so we can't either.
1709
724
1710
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
1711
727
self.bus = bus
1712
728
Client.__init__(self, *args, **kwargs)
1713
729
# Only now, when this client is initialized, can it show up on
1714
730
# the D-Bus
1715
client_object_name = str(self.name).translate(
1716
{ord("."): ord("_"),
1717
ord("-"): ord("_")})
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1720
736
DBusObjectWithProperties.__init__(self, self.bus,
1721
737
self.dbus_object_path)
1722
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1728
""" Modify a variable so that it's a property which announces
1729
its changes to DBus.
1730
1731
transform_fun: Function that takes a value and a variant_level
1732
and transforms it to a D-Bus type.
1733
dbus_name: D-Bus name of the variable
1734
type_func: Function that transform the value before sending it
1735
to the D-Bus. Default: no transform
1736
variant_level: D-Bus variant level. Default: 1
1737
"""
1738
attrname = "_{}".format(dbus_name)
1739
1740
def setter(self, value):
1741
if hasattr(self, "dbus_object_path"):
1742
if (not hasattr(self, attrname) or
1743
type_func(getattr(self, attrname, None))
1744
!= type_func(value)):
1745
if invalidate_only:
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1749
else:
1750
dbus_value = transform_func(
1751
type_func(value),
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1754
dbus_value)
1755
self.PropertiesChanged(
1756
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1759
dbus.Array())
1760
setattr(self, attrname, value)
1761
1762
return property(lambda self: getattr(self, attrname), setter)
1763
1764
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1765
approvals_pending = notifychangeproperty(dbus.Boolean,
1766
"ApprovalPending",
1767
type_func = bool)
1768
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1774
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
"LastCheckedOK")
1776
last_checker_status = notifychangeproperty(dbus.Int16,
1777
"LastCheckerStatus")
1778
last_approval_request = notifychangeproperty(
1779
datetime_to_dbus, "LastApprovalRequest")
1780
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1785
approval_duration = notifychangeproperty(
1786
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1788
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1792
extended_timeout = notifychangeproperty(
1793
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1798
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1802
del notifychangeproperty
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1803
782
1804
783
def __del__(self, *args, **kwargs):
1805
784
try:
1806
785
self.remove_from_connection()
1807
786
except LookupError:
1808
787
pass
1809
if hasattr(DBusObjectWithProperties, "__del__"):
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1810
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
790
Client.__del__(self, *args, **kwargs)
1812
791
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1817
**kwargs)
1818
exitstatus = self.last_checker_status
1819
if exitstatus >= 0:
792
def checker_callback(self, pid, condition, command,
793
*args, **kwargs):
794
self.checker_callback_tag = None
795
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
if os.WIFEXITED(condition):
800
exitstatus = os.WEXITSTATUS(condition)
1820
801
# Emit D-Bus signal
1821
802
self.CheckerCompleted(dbus.Int16(exitstatus),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
803
dbus.Int64(condition),
1824
804
dbus.String(command))
1825
805
else:
1826
806
# Emit D-Bus signal
1827
807
self.CheckerCompleted(dbus.Int16(-1),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
808
dbus.Int64(condition),
1832
809
dbus.String(command))
1833
return ret
810
811
return Client.checker_callback(self, pid, condition, command,
812
*args, **kwargs)
813
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
1834
831
1835
832
def start_checker(self, *args, **kwargs):
1836
old_checker_pid = getattr(self.checker, "pid", None)
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1837
838
r = Client.start_checker(self, *args, **kwargs)
1838
839
# Only if new checker process was started
1839
840
if (self.checker is not None
1840
841
and old_checker_pid != self.checker.pid):
1841
842
# Emit D-Bus signal
1842
843
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
1843
847
return r
1844
848
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
1845
858
def _reset_approved(self):
1846
self.approved = None
859
self._approved = None
1847
860
return False
1848
861
1849
862
def approve(self, value=True):
1850
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
1853
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
1854
869
1855
870
## D-Bus methods, signals & properties
1856
1857
## Interfaces
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1858
872
1859
873
## Signals
1860
874
1861
875
# CheckerCompleted - signal
1862
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
1863
877
def CheckerCompleted(self, exitcode, waitstatus, command):
1864
878
"D-Bus signal"
1865
879
pass
1866
880
1867
881
# CheckerStarted - signal
1868
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
1869
883
def CheckerStarted(self, command):
1870
884
"D-Bus signal"
1871
885
pass
1872
886
1873
887
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
1876
889
def PropertyChanged(self, property, value):
1877
890
"D-Bus signal"
1878
891
pass
1887
900
pass
1888
901
1889
902
# Rejected - signal
1890
@dbus.service.signal(_interface, signature="s")
903
@dbus.service.signal(_interface, signature=u"s")
1891
904
def Rejected(self, reason):
1892
905
"D-Bus signal"
1893
906
pass
1894
907
1895
908
# NeedApproval - signal
1896
@dbus.service.signal(_interface, signature="tb")
909
@dbus.service.signal(_interface, signature=u"tb")
1897
910
def NeedApproval(self, timeout, default):
1898
911
"D-Bus signal"
1899
912
return self.need_approval()
1901
914
## Methods
1902
915
1903
916
# Approve - method
1904
@dbus.service.method(_interface, in_signature="b")
917
@dbus.service.method(_interface, in_signature=u"b")
1905
918
def Approve(self, value):
1906
919
self.approve(value)
1907
920
1908
921
# CheckedOK - method
1909
922
@dbus.service.method(_interface)
1910
923
def CheckedOK(self):
1911
self.checked_ok()
924
return self.checked_ok()
1912
925
1913
926
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
927
@dbus.service.method(_interface)
1916
928
def Enable(self):
1917
929
"D-Bus method"
1918
930
self.enable()
1919
931
1920
932
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
933
@dbus.service.method(_interface)
1923
934
def StartChecker(self):
1924
935
"D-Bus method"
1925
936
self.start_checker()
1926
937
1927
938
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
939
@dbus.service.method(_interface)
1930
940
def Disable(self):
1931
941
"D-Bus method"
1932
942
self.disable()
1933
943
1934
944
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
945
@dbus.service.method(_interface)
1937
946
def StopChecker(self):
1938
947
self.stop_checker()
1940
949
## Properties
1941
950
1942
951
# ApprovalPending - property
1943
@dbus_service_property(_interface, signature="b", access="read")
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1944
953
def ApprovalPending_dbus_property(self):
1945
954
return dbus.Boolean(bool(self.approvals_pending))
1946
955
1947
956
# ApprovedByDefault - property
1948
@dbus_service_property(_interface,
1949
signature="b",
1950
access="readwrite")
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1951
959
def ApprovedByDefault_dbus_property(self, value=None):
1952
960
if value is None: # get
1953
961
return dbus.Boolean(self.approved_by_default)
1954
962
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
1955
966
1956
967
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1958
signature="t",
1959
access="readwrite")
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1960
970
def ApprovalDelay_dbus_property(self, value=None):
1961
971
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
972
return dbus.UInt64(self.approval_delay_milliseconds())
1964
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
1965
977
1966
978
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1968
signature="t",
1969
access="readwrite")
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1970
981
def ApprovalDuration_dbus_property(self, value=None):
1971
982
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1974
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
1975
989
1976
990
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
@dbus_service_property(_interface, signature="s", access="read")
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1980
992
def Name_dbus_property(self):
1981
993
return dbus.String(self.name)
1982
994
1983
995
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1987
997
def Fingerprint_dbus_property(self):
1988
998
return dbus.String(self.fingerprint)
1989
999
1990
1000
# Host - property
1991
@dbus_service_property(_interface,
1992
signature="s",
1993
access="readwrite")
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1994
1003
def Host_dbus_property(self, value=None):
1995
1004
if value is None: # get
1996
1005
return dbus.String(self.host)
1997
self.host = str(value)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1998
1010
1999
1011
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
@dbus_service_property(_interface, signature="s", access="read")
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
2003
1013
def Created_dbus_property(self):
2004
return datetime_to_dbus(self.created)
1014
return dbus.String(self._datetime_to_dbus(self.created))
2005
1015
2006
1016
# LastEnabled - property
2007
@dbus_service_property(_interface, signature="s", access="read")
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
2008
1018
def LastEnabled_dbus_property(self):
2009
return datetime_to_dbus(self.last_enabled)
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
2010
1022
2011
1023
# Enabled - property
2012
@dbus_service_property(_interface,
2013
signature="b",
2014
access="readwrite")
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
2015
1026
def Enabled_dbus_property(self, value=None):
2016
1027
if value is None: # get
2017
1028
return dbus.Boolean(self.enabled)
2021
1032
self.disable()
2022
1033
2023
1034
# LastCheckedOK - property
2024
@dbus_service_property(_interface,
2025
signature="s",
2026
access="readwrite")
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
2027
1037
def LastCheckedOK_dbus_property(self, value=None):
2028
1038
if value is not None:
2029
1039
self.checked_ok()
2030
1040
return
2031
return datetime_to_dbus(self.last_checked_ok)
2032
2033
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
2035
def LastCheckerStatus_dbus_property(self):
2036
return dbus.Int16(self.last_checker_status)
2037
2038
# Expires - property
2039
@dbus_service_property(_interface, signature="s", access="read")
2040
def Expires_dbus_property(self):
2041
return datetime_to_dbus(self.expires)
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
2042
1045
2043
1046
# LastApprovalRequest - property
2044
@dbus_service_property(_interface, signature="s", access="read")
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
2045
1048
def LastApprovalRequest_dbus_property(self):
2046
return datetime_to_dbus(self.last_approval_request)
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
2047
1054
2048
1055
# Timeout - property
2049
@dbus_service_property(_interface,
2050
signature="t",
2051
access="readwrite")
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
2052
1058
def Timeout_dbus_property(self, value=None):
2053
1059
if value is None: # get
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2055
old_timeout = self.timeout
1060
return dbus.UInt64(self.timeout_milliseconds())
2056
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
2057
# Reschedule disabling
2058
if self.enabled:
2059
now = datetime.datetime.utcnow()
2060
self.expires += self.timeout - old_timeout
2061
if self.expires <= now:
2062
# The timeout has passed
2063
self.disable()
2064
else:
2065
if (getattr(self, "disable_initiator_tag", None)
2066
is None):
2067
return
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2071
self.disable)
2072
2073
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2075
signature="t",
2076
access="readwrite")
2077
def ExtendedTimeout_dbus_property(self, value=None):
2078
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
2081
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
2082
1082
2083
1083
# Interval - property
2084
@dbus_service_property(_interface,
2085
signature="t",
2086
access="readwrite")
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
2087
1086
def Interval_dbus_property(self, value=None):
2088
1087
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1088
return dbus.UInt64(self.interval_milliseconds())
2090
1089
self.interval = datetime.timedelta(0, 0, 0, value)
2091
if getattr(self, "checker_initiator_tag", None) is None:
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
2092
1094
return
2093
if self.enabled:
2094
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
2099
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
2100
1101
# Checker - property
2101
@dbus_service_property(_interface,
2102
signature="s",
2103
access="readwrite")
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
2104
1104
def Checker_dbus_property(self, value=None):
2105
1105
if value is None: # get
2106
1106
return dbus.String(self.checker_command)
2107
self.checker_command = str(value)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
2108
1112
2109
1113
# CheckerRunning - property
2110
@dbus_service_property(_interface,
2111
signature="b",
2112
access="readwrite")
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
2113
1116
def CheckerRunning_dbus_property(self, value=None):
2114
1117
if value is None: # get
2115
1118
return dbus.Boolean(self.checker is not None)
2119
1122
self.stop_checker()
2120
1123
2121
1124
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
2125
@dbus_service_property(_interface, signature="o", access="read")
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
2126
1126
def ObjectPath_dbus_property(self):
2127
1127
return self.dbus_object_path # is already a dbus.ObjectPath
2128
1128
2129
1129
# Secret = property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
"invalidates"})
2133
@dbus_service_property(_interface,
2134
signature="ay",
2135
access="write",
2136
byte_arrays=True)
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
2137
1132
def Secret_dbus_property(self, value):
2138
self.secret = bytes(value)
1133
self.secret = str(value)
2139
1134
2140
1135
del _interface
2141
1136
2145
1140
self._pipe = child_pipe
2146
1141
self._pipe.send(('init', fpr, address))
2147
1142
if not self._pipe.recv():
2148
raise KeyError(fpr)
2149
1143
raise KeyError()
1144
2150
1145
def __getattribute__(self, name):
2151
if name == '_pipe':
1146
if(name == '_pipe'):
2152
1147
return super(ProxyClient, self).__getattribute__(name)
2153
1148
self._pipe.send(('getattr', name))
2154
1149
data = self._pipe.recv()
2155
1150
if data[0] == 'data':
2156
1151
return data[1]
2157
1152
if data[0] == 'function':
2158
2159
1153
def func(*args, **kwargs):
2160
1154
self._pipe.send(('funcall', name, args, kwargs))
2161
1155
return self._pipe.recv()[1]
2162
2163
1156
return func
2164
1157
2165
1158
def __setattr__(self, name, value):
2166
if name == '_pipe':
1159
if(name == '_pipe'):
2167
1160
return super(ProxyClient, self).__setattr__(name, value)
2168
1161
self._pipe.send(('setattr', name, value))
2169
1162
2176
1169
2177
1170
def handle(self):
2178
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
logger.info("TCP connection from: %s",
2180
str(self.client_address))
2181
logger.debug("Pipe FD: %d",
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
2182
1175
self.server.child_pipe.fileno())
2183
2184
session = gnutls.ClientSession(self.request)
2185
2186
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
# "+AES-256-CBC", "+SHA1",
2188
# "+COMP-NULL", "+CTYPE-OPENPGP",
2189
# "+DHE-DSS"))
1176
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1182
# Note: gnutls.connection.X509Credentials is really a
1183
# generic GnuTLS certificate credentials object so long as
1184
# no X.509 keys are added to it. Therefore, we can use it
1185
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
2190
1191
# Use a fallback default, since this MUST be set.
2191
1192
priority = self.server.gnutls_priority
2192
1193
if priority is None:
2193
priority = "NORMAL"
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
2197
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
1198
2198
1199
# Start communication using the Mandos protocol
2199
1200
# Get protocol number
2200
1201
line = self.request.makefile().readline()
2201
logger.debug("Protocol version: %r", line)
1202
logger.debug(u"Protocol version: %r", line)
2202
1203
try:
2203
1204
if int(line.strip().split()[0]) > 1:
2204
raise RuntimeError(line)
2205
except (ValueError, IndexError, RuntimeError) as error:
2206
logger.error("Unknown protocol version: %s", error)
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
2207
1208
return
2208
1209
2209
1210
# Start GnuTLS connection
2210
1211
try:
2211
1212
session.handshake()
2212
except gnutls.Error as error:
2213
logger.warning("Handshake failed: %s", error)
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
2214
1215
# Do not run session.bye() here: the session is not
2215
1216
# established. Just abandon the request.
2216
1217
return
2217
logger.debug("Handshake succeeded")
2218
1218
logger.debug(u"Handshake succeeded")
1219
2219
1220
approval_required = False
2220
1221
try:
2221
1222
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
2225
logger.warning("Bad certificate: %s", error)
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
2226
1227
return
2227
logger.debug("Fingerprint: %s", fpr)
2228
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
2229
1230
try:
2230
1231
client = ProxyClient(child_pipe, fpr,
2231
1232
self.client_address)
2239
1240
2240
1241
while True:
2241
1242
if not client.enabled:
2242
logger.info("Client %s is disabled",
2243
client.name)
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
2244
1245
if self.server.use_dbus:
2245
1246
# Emit D-Bus signal
2246
client.Rejected("Disabled")
1247
client.Rejected("Disabled")
2247
1248
return
2248
1249
2249
if client.approved or not client.approval_delay:
1250
if client._approved or not client.approval_delay:
2250
1251
#We are approved or approval is disabled
2251
1252
break
2252
elif client.approved is None:
2253
logger.info("Client %s needs approval",
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
2254
1255
client.name)
2255
1256
if self.server.use_dbus:
2256
1257
# Emit D-Bus signal
2257
1258
client.NeedApproval(
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
2260
1261
else:
2261
logger.warning("Client %s was not approved",
1262
logger.warning(u"Client %s was not approved",
2262
1263
client.name)
2263
1264
if self.server.use_dbus:
2264
1265
# Emit D-Bus signal
2266
1267
return
2267
1268
2268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
2269
1271
time = datetime.datetime.now()
2270
1272
client.changedstate.acquire()
2271
client.changedstate.wait(delay.total_seconds())
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2272
1274
client.changedstate.release()
2273
1275
time2 = datetime.datetime.now()
2274
1276
if (time2 - time) >= delay:
2285
1287
else:
2286
1288
delay -= time2 - time
2287
1289
2288
try:
2289
session.send(client.secret)
2290
except gnutls.Error as error:
2291
logger.warning("gnutls send failed",
2292
exc_info = error)
2293
return
2294
2295
logger.info("Sending secret to %s", client.name)
2296
# bump the timeout using extended_timeout
2297
client.bump_timeout(client.extended_timeout)
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
2298
1305
if self.server.use_dbus:
2299
1306
# Emit D-Bus signal
2300
1307
client.GotSecret()
2304
1311
client.approvals_pending -= 1
2305
1312
try:
2306
1313
session.bye()
2307
except gnutls.Error as error:
2308
logger.warning("GnuTLS bye failed",
2309
exc_info=error)
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
2310
1316
2311
1317
@staticmethod
2312
1318
def peer_certificate(session):
2313
1319
"Return the peer's OpenPGP certificate as a bytestring"
2314
1320
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1323
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
# ...do the normal thing
1325
return session.peer_certificate
2319
1326
list_size = ctypes.c_uint(1)
2320
cert_list = (gnutls.certificate_get_peers
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
2321
1329
(session._c_object, ctypes.byref(list_size)))
2322
1330
if not bool(cert_list) and list_size.value != 0:
2323
raise gnutls.Error("error getting peer certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2324
1333
if list_size.value == 0:
2325
1334
return None
2326
1335
cert = cert_list[0]
2330
1339
def fingerprint(openpgp):
2331
1340
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1341
# New GnuTLS "datum" with the OpenPGP public key
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
2337
1347
# New empty GnuTLS certificate
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1348
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1351
# Import the OpenPGP public key into the certificate
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
2343
1356
# Verify the self signature in the key
2344
1357
crtverify = ctypes.c_uint()
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2347
1361
if crtverify.value != 0:
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2350
1365
# New buffer for the fingerprint
2351
1366
buf = ctypes.create_string_buffer(20)
2352
1367
buf_len = ctypes.c_size_t()
2353
1368
# Get the fingerprint from the certificate into the buffer
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2356
1372
# Deinit the certificate
2357
gnutls.openpgp_crt_deinit(crt)
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1374
# Convert the buffer to a Python bytestring
2359
1375
fpr = ctypes.string_at(buf, buf_len.value)
2360
1376
# Convert the bytestring to hexadecimal notation
2361
hex_fpr = binascii.hexlify(fpr).upper()
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2362
1378
return hex_fpr
2363
1379
2364
1380
2365
1381
class MultiprocessingMixIn(object):
2366
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
2368
1383
def sub_process_main(self, request, address):
2369
1384
try:
2370
1385
self.finish_request(request, address)
2371
except Exception:
1386
except:
2372
1387
self.handle_error(request, address)
2373
1388
self.close_request(request)
2374
1389
2375
1390
def process_request(self, request, address):
2376
1391
"""Start a new process to process the request."""
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
2379
proc.start()
2380
return proc
2381
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
2382
1394
2383
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
1396
""" adds a pipe to the MixIn """
2385
2386
1397
def process_request(self, request, client_address):
2387
1398
"""Overrides and wraps the original process_request().
2388
1399
2389
1400
This function creates a new pipe in self.pipe
2390
1401
"""
2391
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2392
2393
proc = MultiprocessingMixIn.process_request(self, request,
2394
client_address)
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2395
1406
self.child_pipe.close()
2396
self.add_pipe(parent_pipe, proc)
2397
2398
def add_pipe(self, parent_pipe, proc):
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
2399
1410
"""Dummy function; override as necessary"""
2400
raise NotImplementedError()
2401
1411
pass
2402
1412
2403
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2404
1414
socketserver.TCPServer, object):
2409
1419
interface: None or a network interface name (string)
2410
1420
use_ipv6: Boolean; to use IPv6 or not
2411
1421
"""
2412
2413
1422
def __init__(self, server_address, RequestHandlerClass,
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
2417
"""If socketfd is set, use that file descriptor instead of
2418
creating a new one with socket.socket().
2419
"""
1423
interface=None, use_ipv6=True):
2420
1424
self.interface = interface
2421
1425
if use_ipv6:
2422
1426
self.address_family = socket.AF_INET6
2423
if socketfd is not None:
2424
# Save the file descriptor
2425
self.socketfd = socketfd
2426
# Save the original socket.socket() function
2427
self.socket_socket = socket.socket
2428
# To implement --socket, we monkey patch socket.socket.
2429
#
2430
# (When socketserver.TCPServer is a new-style class, we
2431
# could make self.socket into a property instead of monkey
2432
# patching socket.socket.)
2433
#
2434
# Create a one-time-only replacement for socket.socket()
2435
@functools.wraps(socket.socket)
2436
def socket_wrapper(*args, **kwargs):
2437
# Restore original function so subsequent calls are
2438
# not affected.
2439
socket.socket = self.socket_socket
2440
del self.socket_socket
2441
# This time only, return a new socket object from the
2442
# saved file descriptor.
2443
return socket.fromfd(self.socketfd, *args, **kwargs)
2444
# Replace socket.socket() function with wrapper
2445
socket.socket = socket_wrapper
2446
# The socketserver.TCPServer.__init__ will call
2447
# socket.socket(), which might be our replacement,
2448
# socket_wrapper(), if socketfd was set.
2449
1427
socketserver.TCPServer.__init__(self, server_address,
2450
1428
RequestHandlerClass)
2451
2452
1429
def server_bind(self):
2453
1430
"""This overrides the normal server_bind() function
2454
1431
to bind to an interface if one was specified, and also NOT to
2455
1432
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
2457
1433
if self.interface is not None:
2458
1434
if SO_BINDTODEVICE is None:
2459
# Fall back to a hard-coded value which seems to be
2460
# common enough.
2461
logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
SO_BINDTODEVICE = 25
2463
try:
2464
self.socket.setsockopt(
2465
socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
(self.interface + "\0").encode("utf-8"))
2467
except socket.error as error:
2468
if error.errno == errno.EPERM:
2469
logger.error("No permission to bind to"
2470
" interface %s", self.interface)
2471
elif error.errno == errno.ENOPROTOOPT:
2472
logger.error("SO_BINDTODEVICE not available;"
2473
" cannot bind to interface %s",
2474
self.interface)
2475
elif error.errno == errno.ENODEV:
2476
logger.error("Interface %s does not exist,"
2477
" cannot bind", self.interface)
2478
else:
2479
raise
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1437
self.interface)
1438
else:
1439
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1453
else:
1454
raise
2480
1455
# Only bind(2) the socket if we really need to.
2481
1456
if self.server_address[0] or self.server_address[1]:
2482
1457
if not self.server_address[0]:
2483
1458
if self.address_family == socket.AF_INET6:
2484
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
2485
1460
else:
2486
any_address = "0.0.0.0" # INADDR_ANY
1461
any_address = socket.INADDR_ANY
2487
1462
self.server_address = (any_address,
2488
1463
self.server_address[1])
2489
1464
elif not self.server_address[1]:
2490
self.server_address = (self.server_address[0], 0)
1465
self.server_address = (self.server_address[0],
1466
0)
2491
1467
# if self.interface:
2492
1468
# self.server_address = (self.server_address[0],
2493
1469
# 0, # port
2505
1481
gnutls_priority GnuTLS priority string
2506
1482
use_dbus: Boolean; to emit D-Bus signals or not
2507
1483
2508
Assumes a GLib.MainLoop event loop.
1484
Assumes a gobject.MainLoop event loop.
2509
1485
"""
2510
2511
1486
def __init__(self, server_address, RequestHandlerClass,
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2518
1489
self.enabled = False
2519
1490
self.clients = clients
2520
1491
if self.clients is None:
2521
self.clients = {}
1492
self.clients = set()
2522
1493
self.use_dbus = use_dbus
2523
1494
self.gnutls_priority = gnutls_priority
2524
1495
IPv6_TCPServer.__init__(self, server_address,
2525
1496
RequestHandlerClass,
2526
1497
interface = interface,
2527
use_ipv6 = use_ipv6,
2528
socketfd = socketfd)
2529
1498
use_ipv6 = use_ipv6)
2530
1499
def server_activate(self):
2531
1500
if self.enabled:
2532
1501
return socketserver.TCPServer.server_activate(self)
2533
2534
1502
def enable(self):
2535
1503
self.enabled = True
2536
2537
def add_pipe(self, parent_pipe, proc):
1504
def add_pipe(self, parent_pipe):
2538
1505
# Call "handle_ipc" for both data and EOF events
2539
GLib.io_add_watch(
2540
parent_pipe.fileno(),
2541
GLib.IO_IN | GLib.IO_HUP,
2542
functools.partial(self.handle_ipc,
2543
parent_pipe = parent_pipe,
2544
proc = proc))
2545
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
2549
1512
client_object=None):
2550
# error, or the other end of multiprocessing.Pipe has closed
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2552
# Wait for other process to exit
2553
proc.join()
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2554
1529
return False
2555
1530
2556
1531
# Read a request from the child
2561
1536
fpr = request[1]
2562
1537
address = request[2]
2563
1538
2564
for c in self.clients.values():
1539
for c in self.clients:
2565
1540
if c.fingerprint == fpr:
2566
1541
client = c
2567
1542
break
2568
1543
else:
2569
logger.info("Client not found for fingerprint: %s, ad"
2570
"dress: %s", fpr, address)
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2571
1546
if self.use_dbus:
2572
1547
# Emit D-Bus signal
2573
mandos_dbus_service.ClientNotFound(fpr,
2574
address[0])
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2575
1549
parent_pipe.send(False)
2576
1550
return False
2577
1551
2578
GLib.io_add_watch(
2579
parent_pipe.fileno(),
2580
GLib.IO_IN | GLib.IO_HUP,
2581
functools.partial(self.handle_ipc,
2582
parent_pipe = parent_pipe,
2583
proc = proc,
2584
client_object = client))
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2585
1557
parent_pipe.send(True)
2586
# remove the old hook in favor of the new above hook on
2587
# same fileno
1558
# remove the old hook in favor of the new above hook on same fileno
2588
1559
return False
2589
1560
if command == 'funcall':
2590
1561
funcname = request[1]
2591
1562
args = request[2]
2592
1563
kwargs = request[3]
2593
1564
2594
parent_pipe.send(('data', getattr(client_object,
2595
funcname)(*args,
2596
**kwargs)))
2597
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2598
1567
if command == 'getattr':
2599
1568
attrname = request[1]
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2603
1571
else:
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2606
1573
2607
1574
if command == 'setattr':
2608
1575
attrname = request[1]
2609
1576
value = request[2]
2610
1577
setattr(client_object, attrname, value)
2611
1578
2612
1579
return True
2613
1580
2614
1581
2615
def rfc3339_duration_to_delta(duration):
2616
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2617
2618
>>> rfc3339_duration_to_delta("P7D")
2619
datetime.timedelta(7)
2620
>>> rfc3339_duration_to_delta("PT60S")
2621
datetime.timedelta(0, 60)
2622
>>> rfc3339_duration_to_delta("PT60M")
2623
datetime.timedelta(0, 3600)
2624
>>> rfc3339_duration_to_delta("PT24H")
2625
datetime.timedelta(1)
2626
>>> rfc3339_duration_to_delta("P1W")
2627
datetime.timedelta(7)
2628
>>> rfc3339_duration_to_delta("PT5M30S")
2629
datetime.timedelta(0, 330)
2630
>>> rfc3339_duration_to_delta("P1DT3M20S")
2631
datetime.timedelta(1, 200)
2632
"""
2633
2634
# Parsing an RFC 3339 duration with regular expressions is not
2635
# possible - there would have to be multiple places for the same
2636
# values, like seconds. The current code, while more esoteric, is
2637
# cleaner without depending on a parsing library. If Python had a
2638
# built-in library for parsing we would use it, but we'd like to
2639
# avoid excessive use of external libraries.
2640
2641
# New type for defining tokens, syntax, and semantics all-in-one
2642
Token = collections.namedtuple("Token", (
2643
"regexp", # To match token; if "value" is not None, must have
2644
# a "group" containing digits
2645
"value", # datetime.timedelta or None
2646
"followers")) # Tokens valid after this token
2647
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
# the "duration" ABNF definition in RFC 3339, Appendix A.
2649
token_end = Token(re.compile(r"$"), None, frozenset())
2650
token_second = Token(re.compile(r"(\d+)S"),
2651
datetime.timedelta(seconds=1),
2652
frozenset((token_end, )))
2653
token_minute = Token(re.compile(r"(\d+)M"),
2654
datetime.timedelta(minutes=1),
2655
frozenset((token_second, token_end)))
2656
token_hour = Token(re.compile(r"(\d+)H"),
2657
datetime.timedelta(hours=1),
2658
frozenset((token_minute, token_end)))
2659
token_time = Token(re.compile(r"T"),
2660
None,
2661
frozenset((token_hour, token_minute,
2662
token_second)))
2663
token_day = Token(re.compile(r"(\d+)D"),
2664
datetime.timedelta(days=1),
2665
frozenset((token_time, token_end)))
2666
token_month = Token(re.compile(r"(\d+)M"),
2667
datetime.timedelta(weeks=4),
2668
frozenset((token_day, token_end)))
2669
token_year = Token(re.compile(r"(\d+)Y"),
2670
datetime.timedelta(weeks=52),
2671
frozenset((token_month, token_end)))
2672
token_week = Token(re.compile(r"(\d+)W"),
2673
datetime.timedelta(weeks=1),
2674
frozenset((token_end, )))
2675
token_duration = Token(re.compile(r"P"), None,
2676
frozenset((token_year, token_month,
2677
token_day, token_time,
2678
token_week)))
2679
# Define starting values
2680
value = datetime.timedelta() # Value so far
2681
found_token = None
2682
followers = frozenset((token_duration, )) # Following valid tokens
2683
s = duration # String left to parse
2684
# Loop until end token is found
2685
while found_token is not token_end:
2686
# Search for any currently valid tokens
2687
for token in followers:
2688
match = token.regexp.match(s)
2689
if match is not None:
2690
# Token found
2691
if token.value is not None:
2692
# Value found, parse digits
2693
factor = int(match.group(1), 10)
2694
# Add to value so far
2695
value += factor * token.value
2696
# Strip token from string
2697
s = token.regexp.sub("", s, 1)
2698
# Go to found token
2699
found_token = token
2700
# Set valid next tokens
2701
followers = found_token.followers
2702
break
2703
else:
2704
# No currently valid tokens were found
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
.format(duration))
2707
# End token found
2708
return value
2709
2710
2711
1582
def string_to_delta(interval):
2712
1583
"""Parse a string and return a datetime.timedelta
2713
1584
2714
>>> string_to_delta('7d')
1585
>>> string_to_delta(u'7d')
2715
1586
datetime.timedelta(7)
2716
>>> string_to_delta('60s')
1587
>>> string_to_delta(u'60s')
2717
1588
datetime.timedelta(0, 60)
2718
>>> string_to_delta('60m')
1589
>>> string_to_delta(u'60m')
2719
1590
datetime.timedelta(0, 3600)
2720
>>> string_to_delta('24h')
1591
>>> string_to_delta(u'24h')
2721
1592
datetime.timedelta(1)
2722
>>> string_to_delta('1w')
1593
>>> string_to_delta(u'1w')
2723
1594
datetime.timedelta(7)
2724
>>> string_to_delta('5m 30s')
1595
>>> string_to_delta(u'5m 30s')
2725
1596
datetime.timedelta(0, 330)
2726
1597
"""
2727
2728
try:
2729
return rfc3339_duration_to_delta(interval)
2730
except ValueError:
2731
pass
2732
2733
1598
timevalue = datetime.timedelta(0)
2734
1599
for s in interval.split():
2735
1600
try:
2736
suffix = s[-1]
1601
suffix = unicode(s[-1])
2737
1602
value = int(s[:-1])
2738
if suffix == "d":
1603
if suffix == u"d":
2739
1604
delta = datetime.timedelta(value)
2740
elif suffix == "s":
1605
elif suffix == u"s":
2741
1606
delta = datetime.timedelta(0, value)
2742
elif suffix == "m":
1607
elif suffix == u"m":
2743
1608
delta = datetime.timedelta(0, 0, 0, 0, value)
2744
elif suffix == "h":
1609
elif suffix == u"h":
2745
1610
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2746
elif suffix == "w":
1611
elif suffix == u"w":
2747
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2748
1613
else:
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2750
except IndexError as e:
2751
raise ValueError(*(e.args))
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2752
1617
timevalue += delta
2753
1618
return timevalue
2754
1619
2755
1620
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
2756
1645
def daemon(nochdir = False, noclose = False):
2757
1646
"""See daemon(3). Standard BSD Unix function.
2758
1647
2761
1650
sys.exit()
2762
1651
os.setsid()
2763
1652
if not nochdir:
2764
os.chdir("/")
1653
os.chdir(u"/")
2765
1654
if os.fork():
2766
1655
sys.exit()
2767
1656
if not noclose:
2768
1657
# Close all standard open file descriptors
2769
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2770
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
2771
1660
raise OSError(errno.ENODEV,
2772
"{} not a character device"
2773
.format(os.devnull))
1661
u"%s not a character device"
1662
% os.path.devnull)
2774
1663
os.dup2(null, sys.stdin.fileno())
2775
1664
os.dup2(null, sys.stdout.fileno())
2776
1665
os.dup2(null, sys.stderr.fileno())
2783
1672
##################################################################
2784
1673
# Parsing of options, both command line and config file
2785
1674
2786
parser = argparse.ArgumentParser()
2787
parser.add_argument("-v", "--version", action="version",
2788
version = "%(prog)s {}".format(version),
2789
help="show version number and exit")
2790
parser.add_argument("-i", "--interface", metavar="IF",
2791
help="Bind to interface IF")
2792
parser.add_argument("-a", "--address",
2793
help="Address to listen for requests on")
2794
parser.add_argument("-p", "--port", type=int,
2795
help="Port number to receive requests on")
2796
parser.add_argument("--check", action="store_true",
2797
help="Run self-test")
2798
parser.add_argument("--debug", action="store_true",
2799
help="Debug mode; run in foreground and log"
2800
" to terminal", default=None)
2801
parser.add_argument("--debuglevel", metavar="LEVEL",
2802
help="Debug level for stdout output")
2803
parser.add_argument("--priority", help="GnuTLS"
2804
" priority string (see GnuTLS documentation)")
2805
parser.add_argument("--servicename",
2806
metavar="NAME", help="Zeroconf service name")
2807
parser.add_argument("--configdir",
2808
default="/etc/mandos", metavar="DIR",
2809
help="Directory to search for configuration"
2810
" files")
2811
parser.add_argument("--no-dbus", action="store_false",
2812
dest="use_dbus", help="Do not provide D-Bus"
2813
" system bus interface", default=None)
2814
parser.add_argument("--no-ipv6", action="store_false",
2815
dest="use_ipv6", help="Do not use IPv6",
2816
default=None)
2817
parser.add_argument("--no-restore", action="store_false",
2818
dest="restore", help="Do not restore stored"
2819
" state", default=None)
2820
parser.add_argument("--socket", type=int,
2821
help="Specify a file descriptor to a network"
2822
" socket to use instead of creating one")
2823
parser.add_argument("--statedir", metavar="DIR",
2824
help="Directory to save/restore state in")
2825
parser.add_argument("--foreground", action="store_true",
2826
help="Run in foreground", default=None)
2827
parser.add_argument("--no-zeroconf", action="store_false",
2828
dest="zeroconf", help="Do not use Zeroconf",
2829
default=None)
2830
2831
options = parser.parse_args()
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2832
1703
2833
1704
if options.check:
2834
1705
import doctest
2835
fail_count, test_count = doctest.testmod()
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
1706
doctest.testmod()
1707
sys.exit()
2837
1708
2838
1709
# Default values for config file for server-global settings
2839
server_defaults = { "interface": "",
2840
"address": "",
2841
"port": "",
2842
"debug": "False",
2843
"priority":
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2846
"servicename": "Mandos",
2847
"use_dbus": "True",
2848
"use_ipv6": "True",
2849
"debuglevel": "",
2850
"restore": "True",
2851
"socket": "",
2852
"statedir": "/var/lib/mandos",
2853
"foreground": "False",
2854
"zeroconf": "True",
2855
}
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1720
}
2856
1721
2857
1722
# Parse config file for server-global settings
2858
1723
server_config = configparser.SafeConfigParser(server_defaults)
2859
1724
del server_defaults
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2861
1727
# Convert the SafeConfigParser object to a dict
2862
1728
server_settings = server_config.defaults()
2863
1729
# Use the appropriate methods on the non-string config options
2864
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2865
server_settings[option] = server_config.getboolean("DEFAULT",
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2866
1732
option)
2867
1733
if server_settings["port"]:
2868
server_settings["port"] = server_config.getint("DEFAULT",
2869
"port")
2870
if server_settings["socket"]:
2871
server_settings["socket"] = server_config.getint("DEFAULT",
2872
"socket")
2873
# Later, stdin will, and stdout and stderr might, be dup'ed
2874
# over with an opened os.devnull. But we don't want this to
2875
# happen with a supplied network socket.
2876
if 0 <= server_settings["socket"] <= 2:
2877
server_settings["socket"] = os.dup(server_settings
2878
["socket"])
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2879
1736
del server_config
2880
1737
2881
1738
# Override the settings from the config file with command line
2882
1739
# options, if set.
2883
for option in ("interface", "address", "port", "debug",
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2887
1743
value = getattr(options, option)
2888
1744
if value is not None:
2889
1745
server_settings[option] = value
2890
1746
del options
2891
1747
# Force all strings to be unicode
2892
1748
for option in server_settings.keys():
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2895
.decode("utf-8"))
2896
# Force all boolean options to be boolean
2897
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
"foreground", "zeroconf"):
2899
server_settings[option] = bool(server_settings[option])
2900
# Debug implies foreground
2901
if server_settings["debug"]:
2902
server_settings["foreground"] = True
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2903
1751
# Now we have our good server settings in "server_settings"
2904
1752
2905
1753
##################################################################
2906
1754
2907
if (not server_settings["zeroconf"]
2908
and not (server_settings["port"]
2909
or server_settings["socket"] != "")):
2910
parser.error("Needs port or socket to work without Zeroconf")
2911
2912
1755
# For convenience
2913
debug = server_settings["debug"]
2914
debuglevel = server_settings["debuglevel"]
2915
use_dbus = server_settings["use_dbus"]
2916
use_ipv6 = server_settings["use_ipv6"]
2917
stored_state_path = os.path.join(server_settings["statedir"],
2918
stored_state_file)
2919
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2921
2922
if debug:
2923
initlogger(debug, logging.DEBUG)
2924
else:
2925
if not debuglevel:
2926
initlogger(debug)
2927
else:
2928
level = getattr(logging, debuglevel.upper())
2929
initlogger(debug, level)
2930
2931
if server_settings["servicename"] != "Mandos":
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1762
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2936
1766
2937
1767
# Parse config file with clients
2938
client_config = configparser.SafeConfigParser(Client
2939
.client_defaults)
2940
client_config.read(os.path.join(server_settings["configdir"],
2941
"clients.conf"))
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2942
1778
2943
1779
global mandos_dbus_service
2944
1780
mandos_dbus_service = None
2945
1781
2946
socketfd = None
2947
if server_settings["socket"] != "":
2948
socketfd = server_settings["socket"]
2949
tcp_server = MandosServer(
2950
(server_settings["address"], server_settings["port"]),
2951
ClientHandler,
2952
interface=(server_settings["interface"] or None),
2953
use_ipv6=use_ipv6,
2954
gnutls_priority=server_settings["priority"],
2955
use_dbus=use_dbus,
2956
socketfd=socketfd)
2957
if not foreground:
2958
pidfilename = "/run/mandos.pid"
2959
if not os.path.isdir("/run/."):
2960
pidfilename = "/var/run/mandos.pid"
2961
pidfile = None
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2962
1793
try:
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2964
except IOError as e:
2965
logger.error("Could not open file %r", pidfilename,
2966
exc_info=e)
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2967
1797
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2971
1802
try:
2972
uid = pwd.getpwnam(name).pw_uid
2973
gid = pwd.getpwnam(group).pw_gid
2974
break
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2975
1805
except KeyError:
2976
continue
2977
else:
2978
uid = 65534
2979
gid = 65534
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2980
1812
try:
2981
1813
os.setgid(gid)
2982
1814
os.setuid(uid)
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
2986
except OSError as error:
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2989
if error.errno != errno.EPERM:
2990
raise
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
2991
1818
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
2992
1827
if debug:
2993
1828
# Enable all possible GnuTLS debugging
2994
1829
2995
1830
# "Use a log level over 10 to enable all debugging options."
2996
1831
# - GnuTLS manual
2997
gnutls.global_set_log_level(11)
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
2998
1833
2999
@gnutls.log_func
1834
@gnutls.library.types.gnutls_log_func
3000
1835
def debug_gnutls(level, string):
3001
logger.debug("GnuTLS: %s", string[:-1])
1836
logger.debug(u"GnuTLS: %s", string[:-1])
3002
1837
3003
gnutls.global_set_log_function(debug_gnutls)
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
3004
1840
3005
1841
# Redirect stdin so all checkers get /dev/null
3006
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3007
1843
os.dup2(null, sys.stdin.fileno())
3008
1844
if null > 2:
3009
1845
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
3010
1849
3011
1850
# Need to fork before connecting to D-Bus
3012
if not foreground:
1851
if not debug:
3013
1852
# Close all input and output, do double fork, etc.
3014
1853
daemon()
3015
1854
3016
# multiprocessing will use threads, so before we use GLib we need
3017
# to inform GLib that threads will be used.
3018
GLib.threads_init()
3019
3020
1855
global main_loop
3021
1856
# From the Avahi example code
3022
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
1857
DBusGMainLoop(set_as_default=True )
1858
main_loop = gobject.MainLoop()
3024
1859
bus = dbus.SystemBus()
3025
1860
# End of Avahi example code
3026
1861
if use_dbus:
3027
1862
try:
3028
bus_name = dbus.service.BusName("se.recompile.Mandos",
3029
bus,
3030
do_not_queue=True)
3031
old_bus_name = dbus.service.BusName(
3032
"se.bsnet.fukt.Mandos", bus,
3033
do_not_queue=True)
3034
except dbus.exceptions.DBusException as e:
3035
logger.error("Disabling D-Bus:", exc_info=e)
1863
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1864
bus, do_not_queue=True)
1865
except dbus.exceptions.NameExistsException, e:
1866
logger.error(unicode(e) + u", disabling D-Bus")
3036
1867
use_dbus = False
3037
server_settings["use_dbus"] = False
1868
server_settings[u"use_dbus"] = False
3038
1869
tcp_server.use_dbus = False
3039
if zeroconf:
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
service = AvahiServiceToSyslog(
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3045
bus = bus)
3046
if server_settings["interface"]:
3047
service.interface = if_nametoindex(
3048
server_settings["interface"].encode("utf-8"))
1870
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1871
service = AvahiService(name = server_settings[u"servicename"],
1872
servicetype = u"_mandos._tcp",
1873
protocol = protocol, bus = bus)
1874
if server_settings["interface"]:
1875
service.interface = (if_nametoindex
1876
(str(server_settings[u"interface"])))
3049
1877
3050
1878
global multiprocessing_manager
3051
1879
multiprocessing_manager = multiprocessing.Manager()
3053
1881
client_class = Client
3054
1882
if use_dbus:
3055
1883
client_class = functools.partial(ClientDBus, bus = bus)
3056
3057
client_settings = Client.config_parser(client_config)
3058
old_client_settings = {}
3059
clients_data = {}
3060
3061
# This is used to redirect stdout and stderr for checker processes
3062
global wnull
3063
wnull = open(os.devnull, "w") # A writable /dev/null
3064
# Only used if server is running in foreground but not in debug
3065
# mode
3066
if debug or not foreground:
3067
wnull.close()
3068
3069
# Get client data and settings from last running state.
3070
if server_settings["restore"]:
3071
try:
3072
with open(stored_state_path, "rb") as stored_state:
3073
if sys.version_info.major == 2:
3074
clients_data, old_client_settings = pickle.load(
3075
stored_state)
3076
else:
3077
bytes_clients_data, bytes_old_client_settings = (
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3080
## clients_data
3081
# .keys()
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3084
else key): value
3085
for key, value in
3086
bytes_clients_data.items() }
3087
del bytes_clients_data
3088
for key in clients_data:
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3091
for k, v in
3092
clients_data[key].items() }
3093
clients_data[key] = value
3094
# .client_structure
3095
value["client_structure"] = [
3096
(s.decode("utf-8")
3097
if isinstance(s, bytes)
3098
else s) for s in
3099
value["client_structure"] ]
3100
# .name & .host
3101
for k in ("name", "host"):
3102
if isinstance(value[k], bytes):
3103
value[k] = value[k].decode("utf-8")
3104
## old_client_settings
3105
# .keys()
3106
old_client_settings = {
3107
(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_old_client_settings.items() }
3112
del bytes_old_client_settings
3113
# .host
3114
for value in old_client_settings.values():
3115
if isinstance(value["host"], bytes):
3116
value["host"] = (value["host"]
3117
.decode("utf-8"))
3118
os.remove(stored_state_path)
3119
except IOError as e:
3120
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
3123
else:
3124
logger.critical("Could not load persistent state:",
3125
exc_info=e)
3126
raise
3127
except EOFError as e:
3128
logger.warning("Could not load persistent state: "
3129
"EOFError:",
3130
exc_info=e)
3131
3132
with PGPEngine() as pgp:
3133
for client_name, client in clients_data.items():
3134
# Skip removed clients
3135
if client_name not in client_settings:
3136
continue
3137
3138
# Decide which value to use after restoring saved state.
3139
# We have three different values: Old config file,
3140
# new config file, and saved state.
3141
# New config value takes precedence if it differs from old
3142
# config value, otherwise use saved state.
3143
for name, value in client_settings[client_name].items():
3144
try:
3145
# For each value in new config, check if it
3146
# differs from the old config value (Except for
3147
# the "secret" attribute)
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
3151
client[name] = value
3152
except KeyError:
3153
pass
3154
3155
# Clients who has passed its expire date can still be
3156
# enabled if its last checker was successful. A Client
3157
# whose checker succeeded before we stored its state is
3158
# assumed to have successfully run all checkers during
3159
# downtime.
3160
if client["enabled"]:
3161
if datetime.datetime.utcnow() >= client["expires"]:
3162
if not client["last_checked_ok"]:
3163
logger.warning(
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
3167
client["enabled"] = False
3168
elif client["last_checker_status"] != 0:
3169
logger.warning(
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
3175
client["enabled"] = False
3176
else:
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
3180
logger.debug("Last checker succeeded,"
3181
" keeping {} enabled".format(
3182
client_name))
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
3183
1891
try:
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
3187
except PGPError:
3188
# If decryption fails, we use secret from new settings
3189
logger.debug("Failed to decrypt {} old secret".format(
3190
client_name))
3191
client["secret"] = (client_settings[client_name]
3192
["secret"])
3193
3194
# Add/remove clients based on new changes made to config
3195
for client_name in (set(old_client_settings)
3196
- set(client_settings)):
3197
del clients_data[client_name]
3198
for client_name in (set(client_settings)
3199
- set(old_client_settings)):
3200
clients_data[client_name] = client_settings[client_name]
3201
3202
# Create all client objects
3203
for client_name, client in clients_data.items():
3204
tcp_server.clients[client_name] = client_class(
3205
name = client_name,
3206
settings = client,
3207
server_settings = server_settings)
3208
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
3209
1901
if not tcp_server.clients:
3210
logger.warning("No clients defined")
3211
3212
if not foreground:
3213
if pidfile is not None:
3214
pid = os.getpid()
3215
try:
3216
with pidfile:
3217
print(pid, file=pidfile)
3218
except IOError:
3219
logger.error("Could not write to file %r with PID %d",
3220
pidfilename, pid)
3221
del pidfile
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
3222
1916
del pidfilename
3223
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3227
1922
3228
1923
if use_dbus:
3229
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
1924
class MandosDBusService(dbus.service.Object):
3233
1925
"""A D-Bus proxy object"""
3234
3235
1926
def __init__(self):
3236
dbus.service.Object.__init__(self, bus, "/")
3237
3238
_interface = "se.recompile.Mandos"
3239
3240
@dbus.service.signal(_interface, signature="o")
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
3241
1931
def ClientAdded(self, objpath):
3242
1932
"D-Bus signal"
3243
1933
pass
3244
1934
3245
@dbus.service.signal(_interface, signature="ss")
1935
@dbus.service.signal(_interface, signature=u"ss")
3246
1936
def ClientNotFound(self, fingerprint, address):
3247
1937
"D-Bus signal"
3248
1938
pass
3249
1939
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
3252
@dbus.service.signal(_interface, signature="os")
1940
@dbus.service.signal(_interface, signature=u"os")
3253
1941
def ClientRemoved(self, objpath, name):
3254
1942
"D-Bus signal"
3255
1943
pass
3256
1944
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
3259
@dbus.service.method(_interface, out_signature="ao")
1945
@dbus.service.method(_interface, out_signature=u"ao")
3260
1946
def GetAllClients(self):
3261
1947
"D-Bus method"
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
3264
1950
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
3267
1951
@dbus.service.method(_interface,
3268
out_signature="a{oa{sv}}")
1952
out_signature=u"a{oa{sv}}")
3269
1953
def GetAllClientsWithProperties(self):
3270
1954
"D-Bus method"
3271
1955
return dbus.Dictionary(
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
3275
signature="oa{sv}")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
3276
1959
3277
@dbus.service.method(_interface, in_signature="o")
1960
@dbus.service.method(_interface, in_signature=u"o")
3278
1961
def RemoveClient(self, object_path):
3279
1962
"D-Bus method"
3280
for c in tcp_server.clients.values():
1963
for c in tcp_server.clients:
3281
1964
if c.dbus_object_path == object_path:
3282
del tcp_server.clients[c.name]
1965
tcp_server.clients.remove(c)
3283
1966
c.remove_from_connection()
3284
# Don't signal the disabling
1967
# Don't signal anything except ClientRemoved
3285
1968
c.disable(quiet=True)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
3288
1971
return
3289
1972
raise KeyError(object_path)
3290
1973
3291
1974
del _interface
3292
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
out_signature = "a{oa{sa{sv}}}")
3295
def GetManagedObjects(self):
3296
"""D-Bus method"""
3297
return dbus.Dictionary(
3298
{ client.dbus_object_path:
3299
dbus.Dictionary(
3300
{ interface: client.GetAll(interface)
3301
for interface in
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3304
3305
def client_added_signal(self, client):
3306
"""Send the new standard signal and the old signal"""
3307
if use_dbus:
3308
# New standard signal
3309
self.InterfacesAdded(
3310
client.dbus_object_path,
3311
dbus.Dictionary(
3312
{ interface: client.GetAll(interface)
3313
for interface in
3314
client._get_all_interface_names()}))
3315
# Old signal
3316
self.ClientAdded(client.dbus_object_path)
3317
3318
def client_removed_signal(self, client):
3319
"""Send the new standard signal and the old signal"""
3320
if use_dbus:
3321
# New standard signal
3322
self.InterfacesRemoved(
3323
client.dbus_object_path,
3324
client._get_all_interface_names())
3325
# Old signal
3326
self.ClientRemoved(client.dbus_object_path,
3327
client.name)
3328
1975
3329
1976
mandos_dbus_service = MandosDBusService()
3330
1977
3331
# Save modules to variables to exempt the modules from being
3332
# unloaded before the function registered with atexit() is run.
3333
mp = multiprocessing
3334
wn = wnull
3335
1978
def cleanup():
3336
1979
"Cleanup function; run on exit"
3337
if zeroconf:
3338
service.cleanup()
3339
3340
mp.active_children()
3341
wn.close()
3342
if not (tcp_server.clients or client_settings):
3343
return
3344
3345
# Store client before exiting. Secrets are encrypted with key
3346
# based on what config file has. If config file is
3347
# removed/edited, old secret will thus be unrecovable.
3348
clients = {}
3349
with PGPEngine() as pgp:
3350
for client in tcp_server.clients.values():
3351
key = client_settings[client.name]["secret"]
3352
client.encrypted_secret = pgp.encrypt(client.secret,
3353
key)
3354
client_dict = {}
3355
3356
# A list of attributes that can not be pickled
3357
# + secret.
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
3362
exclude.add(name)
3363
3364
client_dict["encrypted_secret"] = (client
3365
.encrypted_secret)
3366
for attr in client.client_structure:
3367
if attr not in exclude:
3368
client_dict[attr] = getattr(client, attr)
3369
3370
clients[client.name] = client_dict
3371
del client_settings[client.name]["secret"]
3372
3373
try:
3374
with tempfile.NamedTemporaryFile(
3375
mode='wb',
3376
suffix=".pickle",
3377
prefix='clients-',
3378
dir=os.path.dirname(stored_state_path),
3379
delete=False) as stored_state:
3380
pickle.dump((clients, client_settings), stored_state,
3381
protocol = 2)
3382
tempname = stored_state.name
3383
os.rename(tempname, stored_state_path)
3384
except (IOError, OSError) as e:
3385
if not debug:
3386
try:
3387
os.remove(tempname)
3388
except NameError:
3389
pass
3390
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
logger.warning("Could not save persistent state: {}"
3392
.format(os.strerror(e.errno)))
3393
else:
3394
logger.warning("Could not save persistent state:",
3395
exc_info=e)
3396
raise
3397
3398
# Delete all clients, and settings from config
1980
service.cleanup()
1981
3399
1982
while tcp_server.clients:
3400
name, client = tcp_server.clients.popitem()
1983
client = tcp_server.clients.pop()
3401
1984
if use_dbus:
3402
1985
client.remove_from_connection()
3403
# Don't signal the disabling
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3404
1988
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
3406
1989
if use_dbus:
3407
mandos_dbus_service.client_removed_signal(client)
3408
client_settings.clear()
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
3409
1993
3410
1994
atexit.register(cleanup)
3411
1995
3412
for client in tcp_server.clients.values():
1996
for client in tcp_server.clients:
3413
1997
if use_dbus:
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
3416
# Need to initiate checking of clients
3417
if client.enabled:
3418
client.init_checker()
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
3419
2001
3420
2002
tcp_server.enable()
3421
2003
tcp_server.server_activate()
3422
2004
3423
2005
# Find out what port we got
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
2006
service.port = tcp_server.socket.getsockname()[1]
3426
2007
if use_ipv6:
3427
logger.info("Now listening on address %r, port %d,"
3428
" flowinfo %d, scope_id %d",
3429
*tcp_server.socket.getsockname())
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
3430
2011
else: # IPv4
3431
logger.info("Now listening on address %r, port %d",
3432
*tcp_server.socket.getsockname())
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
3433
2014
3434
2015
#service.interface = tcp_server.socket.getsockname()[3]
3435
2016
3436
2017
try:
3437
if zeroconf:
3438
# From the Avahi example code
3439
try:
3440
service.activate()
3441
except dbus.exceptions.DBusException as error:
3442
logger.critical("D-Bus Exception", exc_info=error)
3443
cleanup()
3444
sys.exit(1)
3445
# End of Avahi example code
3446
3447
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3448
lambda *args, **kwargs:
3449
(tcp_server.handle_request
3450
(*args[2:], **kwargs) or True))
3451
3452
logger.debug("Starting main loop")
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
2026
2027
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
lambda *args, **kwargs:
2029
(tcp_server.handle_request
2030
(*args[2:], **kwargs) or True))
2031
2032
logger.debug(u"Starting main loop")
3453
2033
main_loop.run()
3454
except AvahiError as error:
3455
logger.critical("Avahi Error", exc_info=error)
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3456
2036
cleanup()
3457
2037
sys.exit(1)
3458
2038
except KeyboardInterrupt:
3459
2039
if debug:
3460
print("", file=sys.stderr)
3461
logger.debug("Server received KeyboardInterrupt")
3462
logger.debug("Server exiting")
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3463
2043
# Must run before the D-Bus bus name gets deregistered
3464
2044
cleanup()
3465
2045
3466
3467
2046
if __name__ == '__main__':
3468
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0