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- Committer: Teddy Hogeborn
- Date: 2010-11-16 18:10:22 UTC
- mfrom: (275.1.1 mandos-release)
- mto: (237.12.2 mandos-persistent) (24.1.171 mandos) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 282.
- Revision ID: teddy@fukt.bsnet.se-20101116181022-oz0dahg0q4jnyb0y
Merge from Björn
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
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2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
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# Mandos server - give out binary blobs to connecting clients.
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#
5
#
6
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# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
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# Copyright © 2008-2016 Björn Påhlsson
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#
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# Copyright © 2008-2010 Teddy Hogeborn
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# Copyright © 2008-2010 Björn Påhlsson
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#
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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
19
19
# the Free Software Foundation, either version 3 of the License, or
23
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
25
# GNU General Public License for more details.
26
#
26
#
27
27
# You should have received a copy of the GNU General Public License
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@recompile.se>.
32
#
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
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
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
276
# Pretend that we have an Avahi module
277
class Avahi(object):
278
"""This isn't so much a class as it is a module-like namespace.
279
It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
def string_array_to_txt_array(self, t):
290
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
298
SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
300
avahi = Avahi()
301
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.3"
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)
302
101
303
102
class AvahiError(Exception):
304
103
def __init__(self, value, *args, **kwargs):
305
104
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
309
108
310
109
class AvahiServiceError(AvahiError):
311
110
pass
312
111
313
314
112
class AvahiGroupError(AvahiError):
315
113
pass
316
114
317
115
318
116
class AvahiService(object):
319
117
"""An Avahi (Zeroconf) service.
320
118
321
119
Attributes:
322
120
interface: integer; avahi.IF_UNSPEC or an interface index.
323
121
Used to optionally bind to the specified interface.
324
name: string; Example: 'Mandos'
325
type: string; Example: '_mandos._tcp'.
326
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>
327
125
port: integer; what port to announce
328
126
TXT: list of strings; TXT record for the service
329
127
domain: string; Domain to publish on, default to .local if empty.
335
133
server: D-Bus Server
336
134
bus: dbus.SystemBus()
337
135
"""
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
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):
350
140
self.interface = interface
351
141
self.name = name
352
142
self.type = servicetype
360
150
self.group = None # our entry group
361
151
self.server = None
362
152
self.bus = bus
363
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
153
def rename(self):
366
154
"""Derived from the Avahi example code"""
367
155
if self.rename_count >= self.max_renames:
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
370
158
self.rename_count)
371
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
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)
374
174
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
376
self.name)
377
if remove:
378
self.remove()
379
try:
380
self.add()
381
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
391
175
def remove(self):
392
176
"""Derived from the Avahi example code"""
393
if self.entry_group_state_changed_match is not None:
394
self.entry_group_state_changed_match.remove()
395
self.entry_group_state_changed_match = None
396
177
if self.group is not None:
397
178
self.group.Reset()
398
399
179
def add(self):
400
180
"""Derived from the Avahi example code"""
401
self.remove()
402
181
if self.group is None:
403
182
self.group = dbus.Interface(
404
183
self.bus.get_object(avahi.DBUS_NAME,
405
184
self.server.EntryGroupNew()),
406
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
407
self.entry_group_state_changed_match = (
408
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
410
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' ...",
411
190
self.name, self.type)
412
191
self.group.AddService(
413
192
self.interface,
418
197
dbus.UInt16(self.port),
419
198
avahi.string_array_to_txt_array(self.TXT))
420
199
self.group.Commit()
421
422
200
def entry_group_state_changed(self, state, error):
423
201
"""Derived from the Avahi example code"""
424
logger.debug("Avahi entry group state change: %i", state)
425
202
logger.debug(u"Avahi entry group state change: %i", state)
203
426
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
428
206
elif state == avahi.ENTRY_GROUP_COLLISION:
429
logger.info("Zeroconf service name collision.")
207
logger.info(u"Zeroconf service name collision.")
430
208
self.rename()
431
209
elif state == avahi.ENTRY_GROUP_FAILURE:
432
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
436
214
def cleanup(self):
437
215
"""Derived from the Avahi example code"""
438
216
if self.group is not None:
439
try:
440
self.group.Free()
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
443
pass
217
self.group.Free()
444
218
self.group = None
445
self.remove()
446
447
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
448
220
"""Derived from the Avahi example code"""
449
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
456
if state in bad_states:
457
if bad_states[state] is not None:
458
if error is None:
459
logger.error(bad_states[state])
460
else:
461
logger.error(bad_states[state] + ": %r", error)
462
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()
463
225
elif state == avahi.SERVER_RUNNING:
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
476
else:
477
if error is None:
478
logger.debug("Unknown state: %r", state)
479
else:
480
logger.debug("Unknown state: %r: %r", state, error)
481
226
self.add()
482
227
def activate(self):
483
228
"""Derived from the Avahi example code"""
484
229
if self.server is None:
485
230
self.server = dbus.Interface(
486
231
self.bus.get_object(avahi.DBUS_NAME,
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
489
233
avahi.DBUS_INTERFACE_SERVER)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
492
236
self.server_state_changed(self.server.GetState())
493
237
494
238
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = AvahiService.rename(self, *args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
502
return ret
503
504
505
# Pretend that we have a GnuTLS module
506
class GnuTLS(object):
507
"""This isn't so much a class as it is a module-like namespace.
508
It is instantiated once, and simulates having a GnuTLS module."""
509
510
_library = ctypes.cdll.LoadLibrary(
511
ctypes.util.find_library("gnutls"))
512
_need_version = b"3.3.0"
513
514
def __init__(self):
515
# Need to use class name "GnuTLS" here, since this method is
516
# called before the assignment to the "gnutls" global variable
517
# happens.
518
if GnuTLS.check_version(self._need_version) is None:
519
raise GnuTLS.Error("Needs GnuTLS {} or later"
520
.format(self._need_version))
521
522
# Unless otherwise indicated, the constants and types below are
523
# all from the gnutls/gnutls.h C header file.
524
525
# Constants
526
E_SUCCESS = 0
527
E_INTERRUPTED = -52
528
E_AGAIN = -28
529
CRT_OPENPGP = 2
530
CLIENT = 2
531
SHUT_RDWR = 0
532
CRD_CERTIFICATE = 1
533
E_NO_CERTIFICATE_FOUND = -49
534
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
535
536
# Types
537
class session_int(ctypes.Structure):
538
_fields_ = []
539
session_t = ctypes.POINTER(session_int)
540
541
class certificate_credentials_st(ctypes.Structure):
542
_fields_ = []
543
certificate_credentials_t = ctypes.POINTER(
544
certificate_credentials_st)
545
certificate_type_t = ctypes.c_int
546
547
class datum_t(ctypes.Structure):
548
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
549
('size', ctypes.c_uint)]
550
551
class openpgp_crt_int(ctypes.Structure):
552
_fields_ = []
553
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
554
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
555
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
556
credentials_type_t = ctypes.c_int
557
transport_ptr_t = ctypes.c_void_p
558
close_request_t = ctypes.c_int
559
560
# Exceptions
561
class Error(Exception):
562
# We need to use the class name "GnuTLS" here, since this
563
# exception might be raised from within GnuTLS.__init__,
564
# which is called before the assignment to the "gnutls"
565
# global variable has happened.
566
def __init__(self, message=None, code=None, args=()):
567
# Default usage is by a message string, but if a return
568
# code is passed, convert it to a string with
569
# gnutls.strerror()
570
self.code = code
571
if message is None and code is not None:
572
message = GnuTLS.strerror(code)
573
return super(GnuTLS.Error, self).__init__(
574
message, *args)
575
576
class CertificateSecurityError(Error):
577
pass
578
579
# Classes
580
class Credentials(object):
581
def __init__(self):
582
self._c_object = gnutls.certificate_credentials_t()
583
gnutls.certificate_allocate_credentials(
584
ctypes.byref(self._c_object))
585
self.type = gnutls.CRD_CERTIFICATE
586
587
def __del__(self):
588
gnutls.certificate_free_credentials(self._c_object)
589
590
class ClientSession(object):
591
def __init__(self, socket, credentials=None):
592
self._c_object = gnutls.session_t()
593
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
594
gnutls.set_default_priority(self._c_object)
595
gnutls.transport_set_ptr(self._c_object, socket.fileno())
596
gnutls.handshake_set_private_extensions(self._c_object,
597
True)
598
self.socket = socket
599
if credentials is None:
600
credentials = gnutls.Credentials()
601
gnutls.credentials_set(self._c_object, credentials.type,
602
ctypes.cast(credentials._c_object,
603
ctypes.c_void_p))
604
self.credentials = credentials
605
606
def __del__(self):
607
gnutls.deinit(self._c_object)
608
609
def handshake(self):
610
return gnutls.handshake(self._c_object)
611
612
def send(self, data):
613
data = bytes(data)
614
data_len = len(data)
615
while data_len > 0:
616
data_len -= gnutls.record_send(self._c_object,
617
data[-data_len:],
618
data_len)
619
620
def bye(self):
621
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
622
623
# Error handling functions
624
def _error_code(result):
625
"""A function to raise exceptions on errors, suitable
626
for the 'restype' attribute on ctypes functions"""
627
if result >= 0:
628
return result
629
if result == gnutls.E_NO_CERTIFICATE_FOUND:
630
raise gnutls.CertificateSecurityError(code=result)
631
raise gnutls.Error(code=result)
632
633
def _retry_on_error(result, func, arguments):
634
"""A function to retry on some errors, suitable
635
for the 'errcheck' attribute on ctypes functions"""
636
while result < 0:
637
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
638
return _error_code(result)
639
result = func(*arguments)
640
return result
641
642
# Unless otherwise indicated, the function declarations below are
643
# all from the gnutls/gnutls.h C header file.
644
645
# Functions
646
priority_set_direct = _library.gnutls_priority_set_direct
647
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
648
ctypes.POINTER(ctypes.c_char_p)]
649
priority_set_direct.restype = _error_code
650
651
init = _library.gnutls_init
652
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
653
init.restype = _error_code
654
655
set_default_priority = _library.gnutls_set_default_priority
656
set_default_priority.argtypes = [session_t]
657
set_default_priority.restype = _error_code
658
659
record_send = _library.gnutls_record_send
660
record_send.argtypes = [session_t, ctypes.c_void_p,
661
ctypes.c_size_t]
662
record_send.restype = ctypes.c_ssize_t
663
record_send.errcheck = _retry_on_error
664
665
certificate_allocate_credentials = (
666
_library.gnutls_certificate_allocate_credentials)
667
certificate_allocate_credentials.argtypes = [
668
ctypes.POINTER(certificate_credentials_t)]
669
certificate_allocate_credentials.restype = _error_code
670
671
certificate_free_credentials = (
672
_library.gnutls_certificate_free_credentials)
673
certificate_free_credentials.argtypes = [
674
certificate_credentials_t]
675
certificate_free_credentials.restype = None
676
677
handshake_set_private_extensions = (
678
_library.gnutls_handshake_set_private_extensions)
679
handshake_set_private_extensions.argtypes = [session_t,
680
ctypes.c_int]
681
handshake_set_private_extensions.restype = None
682
683
credentials_set = _library.gnutls_credentials_set
684
credentials_set.argtypes = [session_t, credentials_type_t,
685
ctypes.c_void_p]
686
credentials_set.restype = _error_code
687
688
strerror = _library.gnutls_strerror
689
strerror.argtypes = [ctypes.c_int]
690
strerror.restype = ctypes.c_char_p
691
692
certificate_type_get = _library.gnutls_certificate_type_get
693
certificate_type_get.argtypes = [session_t]
694
certificate_type_get.restype = _error_code
695
696
certificate_get_peers = _library.gnutls_certificate_get_peers
697
certificate_get_peers.argtypes = [session_t,
698
ctypes.POINTER(ctypes.c_uint)]
699
certificate_get_peers.restype = ctypes.POINTER(datum_t)
700
701
global_set_log_level = _library.gnutls_global_set_log_level
702
global_set_log_level.argtypes = [ctypes.c_int]
703
global_set_log_level.restype = None
704
705
global_set_log_function = _library.gnutls_global_set_log_function
706
global_set_log_function.argtypes = [log_func]
707
global_set_log_function.restype = None
708
709
deinit = _library.gnutls_deinit
710
deinit.argtypes = [session_t]
711
deinit.restype = None
712
713
handshake = _library.gnutls_handshake
714
handshake.argtypes = [session_t]
715
handshake.restype = _error_code
716
handshake.errcheck = _retry_on_error
717
718
transport_set_ptr = _library.gnutls_transport_set_ptr
719
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
720
transport_set_ptr.restype = None
721
722
bye = _library.gnutls_bye
723
bye.argtypes = [session_t, close_request_t]
724
bye.restype = _error_code
725
bye.errcheck = _retry_on_error
726
727
check_version = _library.gnutls_check_version
728
check_version.argtypes = [ctypes.c_char_p]
729
check_version.restype = ctypes.c_char_p
730
731
# All the function declarations below are from gnutls/openpgp.h
732
733
openpgp_crt_init = _library.gnutls_openpgp_crt_init
734
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
735
openpgp_crt_init.restype = _error_code
736
737
openpgp_crt_import = _library.gnutls_openpgp_crt_import
738
openpgp_crt_import.argtypes = [openpgp_crt_t,
739
ctypes.POINTER(datum_t),
740
openpgp_crt_fmt_t]
741
openpgp_crt_import.restype = _error_code
742
743
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
744
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
745
ctypes.POINTER(ctypes.c_uint)]
746
openpgp_crt_verify_self.restype = _error_code
747
748
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
749
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
750
openpgp_crt_deinit.restype = None
751
752
openpgp_crt_get_fingerprint = (
753
_library.gnutls_openpgp_crt_get_fingerprint)
754
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
755
ctypes.c_void_p,
756
ctypes.POINTER(
757
ctypes.c_size_t)]
758
openpgp_crt_get_fingerprint.restype = _error_code
759
760
# Remove non-public functions
761
del _error_code, _retry_on_error
762
# Create the global "gnutls" object, simulating a module
763
gnutls = GnuTLS()
764
765
766
def call_pipe(connection, # : multiprocessing.Connection
767
func, *args, **kwargs):
768
"""This function is meant to be called by multiprocessing.Process
769
770
This function runs func(*args, **kwargs), and writes the resulting
771
return value on the provided multiprocessing.Connection.
772
"""
773
connection.send(func(*args, **kwargs))
774
connection.close()
775
776
777
239
class Client(object):
778
240
"""A representation of a client host served by this server.
779
241
780
242
Attributes:
781
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
782
244
approval_delay: datetime.timedelta(); Time to wait for approval
783
245
approval_duration: datetime.timedelta(); Duration of one approval
784
246
checker: subprocess.Popen(); a running checker process used
785
247
to see if the client lives.
786
248
'None' if no process is running.
787
checker_callback_tag: a GLib event source tag, or None
249
checker_callback_tag: a gobject event source tag, or None
788
250
checker_command: string; External command which is run to check
789
251
if client lives. %() expansions are done at
790
252
runtime with vars(self) as dict, so that for
791
253
instance %(name)s can be used in the command.
792
checker_initiator_tag: a GLib event source tag, or None
254
checker_initiator_tag: a gobject event source tag, or None
793
255
created: datetime.datetime(); (UTC) object creation
794
client_structure: Object describing what attributes a client has
795
and is used for storing the client at exit
796
256
current_checker_command: string; current running checker_command
797
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
798
259
enabled: bool()
799
260
fingerprint: string (40 or 32 hexadecimal digits); used to
800
261
uniquely identify the client
802
263
interval: datetime.timedelta(); How often to start a new checker
803
264
last_approval_request: datetime.datetime(); (UTC) or None
804
265
last_checked_ok: datetime.datetime(); (UTC) or None
805
last_checker_status: integer between 0 and 255 reflecting exit
806
status of last checker. -1 reflects crashed
807
checker, -2 means no checker completed yet.
808
last_checker_signal: The signal which killed the last checker, if
809
last_checker_status is -1
810
last_enabled: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
811
267
name: string; from the config file, used in log messages and
812
268
D-Bus identifiers
813
269
secret: bytestring; sent verbatim (over TLS) to client
814
270
timeout: datetime.timedelta(); How long from last_checked_ok
815
271
until this client is disabled
816
extended_timeout: extra long timeout when secret has been sent
817
272
runtime_expansions: Allowed attributes for runtime expansion.
818
expires: datetime.datetime(); time (UTC) when a client will be
819
disabled, or None
820
server_settings: The server_settings dict from main()
821
273
"""
822
823
runtime_expansions = ("approval_delay", "approval_duration",
824
"created", "enabled", "expires",
825
"fingerprint", "host", "interval",
826
"last_approval_request", "last_checked_ok",
827
"last_enabled", "name", "timeout")
828
client_defaults = {
829
"timeout": "PT5M",
830
"extended_timeout": "PT15M",
831
"interval": "PT2M",
832
"checker": "fping -q -- %%(host)s",
833
"host": "",
834
"approval_delay": "PT0S",
835
"approval_duration": "PT1S",
836
"approved_by_default": "True",
837
"enabled": "True",
838
}
839
274
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")
279
840
280
@staticmethod
841
def config_parser(config):
842
"""Construct a new dict of client settings of this form:
843
{ client_name: {setting_name: value, ...}, ...}
844
with exceptions for any special settings as defined above.
845
NOTE: Must be a pure function. Must return the same result
846
value given the same arguments.
847
"""
848
settings = {}
849
for client_name in config.sections():
850
section = dict(config.items(client_name))
851
client = settings[client_name] = {}
852
853
client["host"] = section["host"]
854
# Reformat values from string types to Python types
855
client["approved_by_default"] = config.getboolean(
856
client_name, "approved_by_default")
857
client["enabled"] = config.getboolean(client_name,
858
"enabled")
859
860
# Uppercase and remove spaces from fingerprint for later
861
# comparison purposes with return value from the
862
# fingerprint() function
863
client["fingerprint"] = (section["fingerprint"].upper()
864
.replace(" ", ""))
865
if "secret" in section:
866
client["secret"] = codecs.decode(section["secret"]
867
.encode("utf-8"),
868
"base64")
869
elif "secfile" in section:
870
with open(os.path.expanduser(os.path.expandvars
871
(section["secfile"])),
872
"rb") as secfile:
873
client["secret"] = secfile.read()
874
else:
875
raise TypeError("No secret or secfile for section {}"
876
.format(section))
877
client["timeout"] = string_to_delta(section["timeout"])
878
client["extended_timeout"] = string_to_delta(
879
section["extended_timeout"])
880
client["interval"] = string_to_delta(section["interval"])
881
client["approval_delay"] = string_to_delta(
882
section["approval_delay"])
883
client["approval_duration"] = string_to_delta(
884
section["approval_duration"])
885
client["checker_command"] = section["checker"]
886
client["last_approval_request"] = None
887
client["last_checked_ok"] = None
888
client["last_checker_status"] = -2
889
890
return settings
891
892
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."""
893
302
self.name = name
894
if server_settings is None:
895
server_settings = {}
896
self.server_settings = server_settings
897
# adding all client settings
898
for setting, value in settings.items():
899
setattr(self, setting, value)
900
901
if self.enabled:
902
if not hasattr(self, "last_enabled"):
903
self.last_enabled = datetime.datetime.utcnow()
904
if not hasattr(self, "expires"):
905
self.expires = (datetime.datetime.utcnow()
906
+ 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()
907
319
else:
908
self.last_enabled = None
909
self.expires = None
910
911
logger.debug("Creating client %r", self.name)
912
logger.debug(" Fingerprint: %s", self.fingerprint)
913
self.created = settings.get("created",
914
datetime.datetime.utcnow())
915
916
# 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
917
331
self.checker = None
918
332
self.checker_initiator_tag = None
919
333
self.disable_initiator_tag = None
920
334
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
921
336
self.current_checker_command = None
922
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)
923
341
self.approvals_pending = 0
924
self.changedstate = multiprocessing_manager.Condition(
925
multiprocessing_manager.Lock())
926
self.client_structure = [attr
927
for attr in self.__dict__.keys()
928
if not attr.startswith("_")]
929
self.client_structure.append("client_structure")
930
931
for name, t in inspect.getmembers(
932
type(self), lambda obj: isinstance(obj, property)):
933
if not name.startswith("_"):
934
self.client_structure.append(name)
935
936
# Send notice to process children that client state has changed
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())
347
937
348
def send_changedstate(self):
938
with self.changedstate:
939
self.changedstate.notify_all()
940
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
941
353
def enable(self):
942
354
"""Start this client's checker and timeout hooks"""
943
if getattr(self, "enabled", False):
355
if getattr(self, u"enabled", False):
944
356
# Already enabled
945
357
return
946
self.expires = datetime.datetime.utcnow() + self.timeout
947
self.enabled = True
358
self.send_changedstate()
948
359
self.last_enabled = datetime.datetime.utcnow()
949
self.init_checker()
950
self.send_changedstate()
951
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()
372
952
373
def disable(self, quiet=True):
953
374
"""Disable this client."""
954
375
if not getattr(self, "enabled", False):
955
376
return False
956
377
if not quiet:
957
logger.info("Disabling client %s", self.name)
958
if getattr(self, "disable_initiator_tag", None) is not None:
959
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)
960
383
self.disable_initiator_tag = None
961
self.expires = None
962
if getattr(self, "checker_initiator_tag", None) is not None:
963
GLib.source_remove(self.checker_initiator_tag)
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
964
386
self.checker_initiator_tag = None
965
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
966
390
self.enabled = False
967
if not quiet:
968
self.send_changedstate()
969
# 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
970
392
return False
971
393
972
394
def __del__(self):
395
self.disable_hook = None
973
396
self.disable()
974
975
def init_checker(self):
976
# Schedule a new checker to be started an 'interval' from now,
977
# and every interval from then on.
978
if self.checker_initiator_tag is not None:
979
GLib.source_remove(self.checker_initiator_tag)
980
self.checker_initiator_tag = GLib.timeout_add(
981
int(self.interval.total_seconds() * 1000),
982
self.start_checker)
983
# Schedule a disable() when 'timeout' has passed
984
if self.disable_initiator_tag is not None:
985
GLib.source_remove(self.disable_initiator_tag)
986
self.disable_initiator_tag = GLib.timeout_add(
987
int(self.timeout.total_seconds() * 1000), self.disable)
988
# Also start a new checker *right now*.
989
self.start_checker()
990
991
def checker_callback(self, source, condition, connection,
992
command):
397
398
def checker_callback(self, pid, condition, command):
993
399
"""The checker has completed, so take appropriate actions."""
994
400
self.checker_callback_tag = None
995
401
self.checker = None
996
# Read return code from connection (see call_pipe)
997
returncode = connection.recv()
998
connection.close()
999
1000
if returncode >= 0:
1001
self.last_checker_status = returncode
1002
self.last_checker_signal = None
1003
if self.last_checker_status == 0:
1004
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",
1005
406
vars(self))
1006
407
self.checked_ok()
1007
408
else:
1008
logger.info("Checker for %(name)s failed", vars(self))
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
1009
411
else:
1010
self.last_checker_status = -1
1011
self.last_checker_signal = -returncode
1012
logger.warning("Checker for %(name)s crashed?",
412
logger.warning(u"Checker for %(name)s crashed?",
1013
413
vars(self))
1014
return False
1015
414
1016
415
def checked_ok(self):
1017
"""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
"""
1018
421
self.last_checked_ok = datetime.datetime.utcnow()
1019
self.last_checker_status = 0
1020
self.last_checker_signal = None
1021
self.bump_timeout()
1022
1023
def bump_timeout(self, timeout=None):
1024
"""Bump up the timeout for this client."""
1025
if timeout is None:
1026
timeout = self.timeout
1027
if self.disable_initiator_tag is not None:
1028
GLib.source_remove(self.disable_initiator_tag)
1029
self.disable_initiator_tag = None
1030
if getattr(self, "enabled", False):
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(timeout.total_seconds() * 1000), self.disable)
1033
self.expires = datetime.datetime.utcnow() + timeout
1034
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
426
1035
427
def need_approval(self):
1036
428
self.last_approval_request = datetime.datetime.utcnow()
1037
429
1038
430
def start_checker(self):
1039
431
"""Start a new checker subprocess if one is not running.
1040
432
1041
433
If a checker already exists, leave it running and do
1042
434
nothing."""
1043
435
# The reason for not killing a running checker is that if we
1044
# did that, and if a checker (for some reason) started running
1045
# slowly and taking more than 'interval' time, then the client
1046
# would inevitably timeout, since no checker would get a
1047
# 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
1048
440
# checkers alone, the checker would have to take more time
1049
441
# than 'timeout' for the client to be disabled, which is as it
1050
442
# should be.
1051
1052
if self.checker is not None and not self.checker.is_alive():
1053
logger.warning("Checker was not alive; joining")
1054
self.checker.join()
1055
self.checker = None
443
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)
1056
457
# Start a new checker if needed
1057
458
if self.checker is None:
1058
# Escape attributes for the shell
1059
escaped_attrs = {
1060
attr: re.escape(str(getattr(self, attr)))
1061
for attr in self.runtime_expansions}
1062
459
try:
1063
command = self.checker_command % escaped_attrs
1064
except TypeError as error:
1065
logger.error('Could not format string "%s"',
1066
self.checker_command,
1067
exc_info=error)
1068
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
1069
478
self.current_checker_command = command
1070
logger.info("Starting checker %r for %s", command,
1071
self.name)
1072
# We don't need to redirect stdout and stderr, since
1073
# in normal mode, that is already done by daemon(),
1074
# and in debug mode we don't want to. (Stdin is
1075
# always replaced by /dev/null.)
1076
# The exception is when not debugging but nevertheless
1077
# running in the foreground; use the previously
1078
# created wnull.
1079
popen_args = {"close_fds": True,
1080
"shell": True,
1081
"cwd": "/"}
1082
if (not self.server_settings["debug"]
1083
and self.server_settings["foreground"]):
1084
popen_args.update({"stdout": wnull,
1085
"stderr": wnull})
1086
pipe = multiprocessing.Pipe(duplex=False)
1087
self.checker = multiprocessing.Process(
1088
target=call_pipe,
1089
args=(pipe[1], subprocess.call, command),
1090
kwargs=popen_args)
1091
self.checker.start()
1092
self.checker_callback_tag = GLib.io_add_watch(
1093
pipe[0].fileno(), GLib.IO_IN,
1094
self.checker_callback, pipe[0], command)
1095
# 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
1096
503
return True
1097
504
1098
505
def stop_checker(self):
1099
506
"""Force the checker process, if any, to stop."""
1100
507
if self.checker_callback_tag:
1101
GLib.source_remove(self.checker_callback_tag)
508
gobject.source_remove(self.checker_callback_tag)
1102
509
self.checker_callback_tag = None
1103
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
1104
511
return
1105
logger.debug("Stopping checker for %(name)s", vars(self))
1106
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
1107
521
self.checker = None
1108
522
1109
1110
def dbus_service_property(dbus_interface,
1111
signature="v",
1112
access="readwrite",
1113
byte_arrays=False):
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
1114
525
"""Decorators for marking methods of a DBusObjectWithProperties to
1115
526
become properties on the D-Bus.
1116
527
1117
528
The decorated method will be called with no arguments by "Get"
1118
529
and with one argument by "Set".
1119
530
1120
531
The parameters, where they are supported, are the same as
1121
532
dbus.service.method, except there is only "signature", since the
1122
533
type from Get() and the type sent to Set() is the same.
1123
534
"""
1124
535
# Encoding deeply encoded byte arrays is not supported yet by the
1125
536
# "Set" method, so we fail early here:
1126
if byte_arrays and signature != "ay":
1127
raise ValueError("Byte arrays not supported for non-'ay'"
1128
" signature {!r}".format(signature))
1129
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
1130
540
def decorator(func):
1131
541
func._dbus_is_property = True
1132
542
func._dbus_interface = dbus_interface
1133
543
func._dbus_signature = signature
1134
544
func._dbus_access = access
1135
545
func._dbus_name = func.__name__
1136
if func._dbus_name.endswith("_dbus_property"):
546
if func._dbus_name.endswith(u"_dbus_property"):
1137
547
func._dbus_name = func._dbus_name[:-14]
1138
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1139
return func
1140
1141
return decorator
1142
1143
1144
def dbus_interface_annotations(dbus_interface):
1145
"""Decorator for marking functions returning interface annotations
1146
1147
Usage:
1148
1149
@dbus_interface_annotations("org.example.Interface")
1150
def _foo(self): # Function name does not matter
1151
return {"org.freedesktop.DBus.Deprecated": "true",
1152
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1153
"false"}
1154
"""
1155
1156
def decorator(func):
1157
func._dbus_is_interface = True
1158
func._dbus_interface = dbus_interface
1159
func._dbus_name = dbus_interface
1160
return func
1161
1162
return decorator
1163
1164
1165
def dbus_annotations(annotations):
1166
"""Decorator to annotate D-Bus methods, signals or properties
1167
Usage:
1168
1169
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1170
"org.freedesktop.DBus.Property."
1171
"EmitsChangedSignal": "false"})
1172
@dbus_service_property("org.example.Interface", signature="b",
1173
access="r")
1174
def Property_dbus_property(self):
1175
return dbus.Boolean(False)
1176
1177
See also the DBusObjectWithAnnotations class.
1178
"""
1179
1180
def decorator(func):
1181
func._dbus_annotations = annotations
1182
return func
1183
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
1184
550
return decorator
1185
551
1186
552
1187
553
class DBusPropertyException(dbus.exceptions.DBusException):
1188
554
"""A base class for D-Bus property-related exceptions
1189
555
"""
1190
pass
556
def __unicode__(self):
557
return unicode(str(self))
1191
558
1192
559
1193
560
class DBusPropertyAccessException(DBusPropertyException):
1202
569
pass
1203
570
1204
571
1205
class DBusObjectWithAnnotations(dbus.service.Object):
1206
"""A D-Bus object with annotations.
1207
1208
Classes inheriting from this can use the dbus_annotations
1209
decorator to add annotations to methods or signals.
1210
"""
1211
1212
@staticmethod
1213
def _is_dbus_thing(thing):
1214
"""Returns a function testing if an attribute is a D-Bus thing
1215
1216
If called like _is_dbus_thing("method") it returns a function
1217
suitable for use as predicate to inspect.getmembers().
1218
"""
1219
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1220
False)
1221
1222
def _get_all_dbus_things(self, thing):
1223
"""Returns a generator of (name, attribute) pairs
1224
"""
1225
return ((getattr(athing.__get__(self), "_dbus_name", name),
1226
athing.__get__(self))
1227
for cls in self.__class__.__mro__
1228
for name, athing in
1229
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1230
1231
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1232
out_signature="s",
1233
path_keyword='object_path',
1234
connection_keyword='connection')
1235
def Introspect(self, object_path, connection):
1236
"""Overloading of standard D-Bus method.
1237
1238
Inserts annotation tags on methods and signals.
1239
"""
1240
xmlstring = dbus.service.Object.Introspect(self, object_path,
1241
connection)
1242
try:
1243
document = xml.dom.minidom.parseString(xmlstring)
1244
1245
for if_tag in document.getElementsByTagName("interface"):
1246
# Add annotation tags
1247
for typ in ("method", "signal"):
1248
for tag in if_tag.getElementsByTagName(typ):
1249
annots = dict()
1250
for name, prop in (self.
1251
_get_all_dbus_things(typ)):
1252
if (name == tag.getAttribute("name")
1253
and prop._dbus_interface
1254
== if_tag.getAttribute("name")):
1255
annots.update(getattr(
1256
prop, "_dbus_annotations", {}))
1257
for name, value in annots.items():
1258
ann_tag = document.createElement(
1259
"annotation")
1260
ann_tag.setAttribute("name", name)
1261
ann_tag.setAttribute("value", value)
1262
tag.appendChild(ann_tag)
1263
# Add interface annotation tags
1264
for annotation, value in dict(
1265
itertools.chain.from_iterable(
1266
annotations().items()
1267
for name, annotations
1268
in self._get_all_dbus_things("interface")
1269
if name == if_tag.getAttribute("name")
1270
)).items():
1271
ann_tag = document.createElement("annotation")
1272
ann_tag.setAttribute("name", annotation)
1273
ann_tag.setAttribute("value", value)
1274
if_tag.appendChild(ann_tag)
1275
# Fix argument name for the Introspect method itself
1276
if (if_tag.getAttribute("name")
1277
== dbus.INTROSPECTABLE_IFACE):
1278
for cn in if_tag.getElementsByTagName("method"):
1279
if cn.getAttribute("name") == "Introspect":
1280
for arg in cn.getElementsByTagName("arg"):
1281
if (arg.getAttribute("direction")
1282
== "out"):
1283
arg.setAttribute("name",
1284
"xml_data")
1285
xmlstring = document.toxml("utf-8")
1286
document.unlink()
1287
except (AttributeError, xml.dom.DOMException,
1288
xml.parsers.expat.ExpatError) as error:
1289
logger.error("Failed to override Introspection method",
1290
exc_info=error)
1291
return xmlstring
1292
1293
1294
class DBusObjectWithProperties(DBusObjectWithAnnotations):
572
class DBusObjectWithProperties(dbus.service.Object):
1295
573
"""A D-Bus object with properties.
1296
574
1297
575
Classes inheriting from this can use the dbus_service_property
1298
576
decorator to expose methods as D-Bus properties. It exposes the
1299
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
1300
578
"""
1301
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
1302
591
def _get_dbus_property(self, interface_name, property_name):
1303
592
"""Returns a bound method if one exists which is a D-Bus
1304
593
property with the specified name and interface.
1305
594
"""
1306
for cls in self.__class__.__mro__:
1307
for name, value in inspect.getmembers(
1308
cls, self._is_dbus_thing("property")):
1309
if (value._dbus_name == property_name
1310
and value._dbus_interface == interface_name):
1311
return value.__get__(self)
1312
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
1313
605
# No such property
1314
raise DBusPropertyNotFound("{}:{}.{}".format(
1315
self.dbus_object_path, interface_name, property_name))
1316
1317
@classmethod
1318
def _get_all_interface_names(cls):
1319
"""Get a sequence of all interfaces supported by an object"""
1320
return (name for name in set(getattr(getattr(x, attr),
1321
"_dbus_interface", None)
1322
for x in (inspect.getmro(cls))
1323
for attr in dir(x))
1324
if name is not None)
1325
1326
@dbus.service.method(dbus.PROPERTIES_IFACE,
1327
in_signature="ss",
1328
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")
1329
612
def Get(self, interface_name, property_name):
1330
613
"""Standard D-Bus property Get() method, see D-Bus standard.
1331
614
"""
1332
615
prop = self._get_dbus_property(interface_name, property_name)
1333
if prop._dbus_access == "write":
616
if prop._dbus_access == u"write":
1334
617
raise DBusPropertyAccessException(property_name)
1335
618
value = prop()
1336
if not hasattr(value, "variant_level"):
619
if not hasattr(value, u"variant_level"):
1337
620
return value
1338
621
return type(value)(value, variant_level=value.variant_level+1)
1339
1340
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
622
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1341
624
def Set(self, interface_name, property_name, value):
1342
625
"""Standard D-Bus property Set() method, see D-Bus standard.
1343
626
"""
1344
627
prop = self._get_dbus_property(interface_name, property_name)
1345
if prop._dbus_access == "read":
628
if prop._dbus_access == u"read":
1346
629
raise DBusPropertyAccessException(property_name)
1347
if prop._dbus_get_args_options["byte_arrays"]:
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1348
631
# The byte_arrays option is not supported yet on
1349
632
# signatures other than "ay".
1350
if prop._dbus_signature != "ay":
1351
raise ValueError("Byte arrays not supported for non-"
1352
"'ay' signature {!r}"
1353
.format(prop._dbus_signature))
1354
value = dbus.ByteArray(b''.join(chr(byte)
1355
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))
1356
637
prop(value)
1357
1358
@dbus.service.method(dbus.PROPERTIES_IFACE,
1359
in_signature="s",
1360
out_signature="a{sv}")
638
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1361
641
def GetAll(self, interface_name):
1362
642
"""Standard D-Bus property GetAll() method, see D-Bus
1363
643
standard.
1364
644
1365
645
Note: Will not include properties with access="write".
1366
646
"""
1367
properties = {}
1368
for name, prop in self._get_all_dbus_things("property"):
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1369
649
if (interface_name
1370
650
and interface_name != prop._dbus_interface):
1371
651
# Interface non-empty but did not match
1372
652
continue
1373
653
# Ignore write-only properties
1374
if prop._dbus_access == "write":
654
if prop._dbus_access == u"write":
1375
655
continue
1376
656
value = prop()
1377
if not hasattr(value, "variant_level"):
1378
properties[name] = value
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1379
659
continue
1380
properties[name] = type(value)(
1381
value, variant_level=value.variant_level + 1)
1382
return dbus.Dictionary(properties, signature="sv")
1383
1384
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1385
def PropertiesChanged(self, interface_name, changed_properties,
1386
invalidated_properties):
1387
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1388
standard.
1389
"""
1390
pass
1391
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
663
1392
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1393
out_signature="s",
665
out_signature=u"s",
1394
666
path_keyword='object_path',
1395
667
connection_keyword='connection')
1396
668
def Introspect(self, object_path, connection):
1397
"""Overloading of standard D-Bus method.
1398
1399
Inserts property tags and interface annotation tags.
669
"""Standard D-Bus method, overloaded to insert property tags.
1400
670
"""
1401
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1402
object_path,
1403
connection)
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1404
673
try:
1405
674
document = xml.dom.minidom.parseString(xmlstring)
1406
1407
675
def make_tag(document, name, prop):
1408
e = document.createElement("property")
1409
e.setAttribute("name", name)
1410
e.setAttribute("type", prop._dbus_signature)
1411
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)
1412
680
return e
1413
1414
for if_tag in document.getElementsByTagName("interface"):
1415
# Add property tags
681
for if_tag in document.getElementsByTagName(u"interface"):
1416
682
for tag in (make_tag(document, name, prop)
1417
683
for name, prop
1418
in self._get_all_dbus_things("property")
684
in self._get_all_dbus_properties()
1419
685
if prop._dbus_interface
1420
== if_tag.getAttribute("name")):
686
== if_tag.getAttribute(u"name")):
1421
687
if_tag.appendChild(tag)
1422
# Add annotation tags for properties
1423
for tag in if_tag.getElementsByTagName("property"):
1424
annots = dict()
1425
for name, prop in self._get_all_dbus_things(
1426
"property"):
1427
if (name == tag.getAttribute("name")
1428
and prop._dbus_interface
1429
== if_tag.getAttribute("name")):
1430
annots.update(getattr(
1431
prop, "_dbus_annotations", {}))
1432
for name, value in annots.items():
1433
ann_tag = document.createElement(
1434
"annotation")
1435
ann_tag.setAttribute("name", name)
1436
ann_tag.setAttribute("value", value)
1437
tag.appendChild(ann_tag)
1438
688
# Add the names to the return values for the
1439
689
# "org.freedesktop.DBus.Properties" methods
1440
if (if_tag.getAttribute("name")
1441
== "org.freedesktop.DBus.Properties"):
1442
for cn in if_tag.getElementsByTagName("method"):
1443
if cn.getAttribute("name") == "Get":
1444
for arg in cn.getElementsByTagName("arg"):
1445
if (arg.getAttribute("direction")
1446
== "out"):
1447
arg.setAttribute("name", "value")
1448
elif cn.getAttribute("name") == "GetAll":
1449
for arg in cn.getElementsByTagName("arg"):
1450
if (arg.getAttribute("direction")
1451
== "out"):
1452
arg.setAttribute("name", "props")
1453
xmlstring = document.toxml("utf-8")
1454
document.unlink()
1455
except (AttributeError, xml.dom.DOMException,
1456
xml.parsers.expat.ExpatError) as error:
1457
logger.error("Failed to override Introspection method",
1458
exc_info=error)
1459
return xmlstring
1460
1461
try:
1462
dbus.OBJECT_MANAGER_IFACE
1463
except AttributeError:
1464
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1465
1466
1467
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1468
"""A D-Bus object with an ObjectManager.
1469
1470
Classes inheriting from this exposes the standard
1471
GetManagedObjects call and the InterfacesAdded and
1472
InterfacesRemoved signals on the standard
1473
"org.freedesktop.DBus.ObjectManager" interface.
1474
1475
Note: No signals are sent automatically; they must be sent
1476
manually.
1477
"""
1478
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1479
out_signature="a{oa{sa{sv}}}")
1480
def GetManagedObjects(self):
1481
"""This function must be overridden"""
1482
raise NotImplementedError()
1483
1484
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1485
signature="oa{sa{sv}}")
1486
def InterfacesAdded(self, object_path, interfaces_and_properties):
1487
pass
1488
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1490
def InterfacesRemoved(self, object_path, interfaces):
1491
pass
1492
1493
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1494
out_signature="s",
1495
path_keyword='object_path',
1496
connection_keyword='connection')
1497
def Introspect(self, object_path, connection):
1498
"""Overloading of standard D-Bus method.
1499
1500
Override return argument name of GetManagedObjects to be
1501
"objpath_interfaces_and_properties"
1502
"""
1503
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1504
object_path,
1505
connection)
1506
try:
1507
document = xml.dom.minidom.parseString(xmlstring)
1508
1509
for if_tag in document.getElementsByTagName("interface"):
1510
# Fix argument name for the GetManagedObjects method
1511
if (if_tag.getAttribute("name")
1512
== dbus.OBJECT_MANAGER_IFACE):
1513
for cn in if_tag.getElementsByTagName("method"):
1514
if (cn.getAttribute("name")
1515
== "GetManagedObjects"):
1516
for arg in cn.getElementsByTagName("arg"):
1517
if (arg.getAttribute("direction")
1518
== "out"):
1519
arg.setAttribute(
1520
"name",
1521
"objpath_interfaces"
1522
"_and_properties")
1523
xmlstring = document.toxml("utf-8")
1524
document.unlink()
1525
except (AttributeError, xml.dom.DOMException,
1526
xml.parsers.expat.ExpatError) as error:
1527
logger.error("Failed to override Introspection method",
1528
exc_info=error)
1529
return xmlstring
1530
1531
1532
def datetime_to_dbus(dt, variant_level=0):
1533
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1534
if dt is None:
1535
return dbus.String("", variant_level=variant_level)
1536
return dbus.String(dt.isoformat(), variant_level=variant_level)
1537
1538
1539
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1540
"""A class decorator; applied to a subclass of
1541
dbus.service.Object, it will add alternate D-Bus attributes with
1542
interface names according to the "alt_interface_names" mapping.
1543
Usage:
1544
1545
@alternate_dbus_interfaces({"org.example.Interface":
1546
"net.example.AlternateInterface"})
1547
class SampleDBusObject(dbus.service.Object):
1548
@dbus.service.method("org.example.Interface")
1549
def SampleDBusMethod():
1550
pass
1551
1552
The above "SampleDBusMethod" on "SampleDBusObject" will be
1553
reachable via two interfaces: "org.example.Interface" and
1554
"net.example.AlternateInterface", the latter of which will have
1555
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1556
"true", unless "deprecate" is passed with a False value.
1557
1558
This works for methods and signals, and also for D-Bus properties
1559
(from DBusObjectWithProperties) and interfaces (from the
1560
dbus_interface_annotations decorator).
1561
"""
1562
1563
def wrapper(cls):
1564
for orig_interface_name, alt_interface_name in (
1565
alt_interface_names.items()):
1566
attr = {}
1567
interface_names = set()
1568
# Go though all attributes of the class
1569
for attrname, attribute in inspect.getmembers(cls):
1570
# Ignore non-D-Bus attributes, and D-Bus attributes
1571
# with the wrong interface name
1572
if (not hasattr(attribute, "_dbus_interface")
1573
or not attribute._dbus_interface.startswith(
1574
orig_interface_name)):
1575
continue
1576
# Create an alternate D-Bus interface name based on
1577
# the current name
1578
alt_interface = attribute._dbus_interface.replace(
1579
orig_interface_name, alt_interface_name)
1580
interface_names.add(alt_interface)
1581
# Is this a D-Bus signal?
1582
if getattr(attribute, "_dbus_is_signal", False):
1583
# Extract the original non-method undecorated
1584
# function by black magic
1585
if sys.version_info.major == 2:
1586
nonmethod_func = (dict(
1587
zip(attribute.func_code.co_freevars,
1588
attribute.__closure__))
1589
["func"].cell_contents)
1590
else:
1591
nonmethod_func = (dict(
1592
zip(attribute.__code__.co_freevars,
1593
attribute.__closure__))
1594
["func"].cell_contents)
1595
# Create a new, but exactly alike, function
1596
# object, and decorate it to be a new D-Bus signal
1597
# with the alternate D-Bus interface name
1598
new_function = copy_function(nonmethod_func)
1599
new_function = (dbus.service.signal(
1600
alt_interface,
1601
attribute._dbus_signature)(new_function))
1602
# Copy annotations, if any
1603
try:
1604
new_function._dbus_annotations = dict(
1605
attribute._dbus_annotations)
1606
except AttributeError:
1607
pass
1608
1609
# Define a creator of a function to call both the
1610
# original and alternate functions, so both the
1611
# original and alternate signals gets sent when
1612
# the function is called
1613
def fixscope(func1, func2):
1614
"""This function is a scope container to pass
1615
func1 and func2 to the "call_both" function
1616
outside of its arguments"""
1617
1618
@functools.wraps(func2)
1619
def call_both(*args, **kwargs):
1620
"""This function will emit two D-Bus
1621
signals by calling func1 and func2"""
1622
func1(*args, **kwargs)
1623
func2(*args, **kwargs)
1624
# Make wrapper function look like a D-Bus
1625
# signal
1626
for name, attr in inspect.getmembers(func2):
1627
if name.startswith("_dbus_"):
1628
setattr(call_both, name, attr)
1629
1630
return call_both
1631
# Create the "call_both" function and add it to
1632
# the class
1633
attr[attrname] = fixscope(attribute, new_function)
1634
# Is this a D-Bus method?
1635
elif getattr(attribute, "_dbus_is_method", False):
1636
# Create a new, but exactly alike, function
1637
# object. Decorate it to be a new D-Bus method
1638
# with the alternate D-Bus interface name. Add it
1639
# to the class.
1640
attr[attrname] = (
1641
dbus.service.method(
1642
alt_interface,
1643
attribute._dbus_in_signature,
1644
attribute._dbus_out_signature)
1645
(copy_function(attribute)))
1646
# Copy annotations, if any
1647
try:
1648
attr[attrname]._dbus_annotations = dict(
1649
attribute._dbus_annotations)
1650
except AttributeError:
1651
pass
1652
# Is this a D-Bus property?
1653
elif getattr(attribute, "_dbus_is_property", False):
1654
# Create a new, but exactly alike, function
1655
# object, and decorate it to be a new D-Bus
1656
# property with the alternate D-Bus interface
1657
# name. Add it to the class.
1658
attr[attrname] = (dbus_service_property(
1659
alt_interface, attribute._dbus_signature,
1660
attribute._dbus_access,
1661
attribute._dbus_get_args_options
1662
["byte_arrays"])
1663
(copy_function(attribute)))
1664
# Copy annotations, if any
1665
try:
1666
attr[attrname]._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
1669
pass
1670
# Is this a D-Bus interface?
1671
elif getattr(attribute, "_dbus_is_interface", False):
1672
# Create a new, but exactly alike, function
1673
# object. Decorate it to be a new D-Bus interface
1674
# with the alternate D-Bus interface name. Add it
1675
# to the class.
1676
attr[attrname] = (
1677
dbus_interface_annotations(alt_interface)
1678
(copy_function(attribute)))
1679
if deprecate:
1680
# Deprecate all alternate interfaces
1681
iname = "_AlternateDBusNames_interface_annotation{}"
1682
for interface_name in interface_names:
1683
1684
@dbus_interface_annotations(interface_name)
1685
def func(self):
1686
return {"org.freedesktop.DBus.Deprecated":
1687
"true"}
1688
# Find an unused name
1689
for aname in (iname.format(i)
1690
for i in itertools.count()):
1691
if aname not in attr:
1692
attr[aname] = func
1693
break
1694
if interface_names:
1695
# Replace the class with a new subclass of it with
1696
# methods, signals, etc. as created above.
1697
if sys.version_info.major == 2:
1698
cls = type(b"{}Alternate".format(cls.__name__),
1699
(cls, ), attr)
1700
else:
1701
cls = type("{}Alternate".format(cls.__name__),
1702
(cls, ), attr)
1703
return cls
1704
1705
return wrapper
1706
1707
1708
@alternate_dbus_interfaces({"se.recompile.Mandos":
1709
"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
1710
712
class ClientDBus(Client, DBusObjectWithProperties):
1711
713
"""A Client class using D-Bus
1712
714
1713
715
Attributes:
1714
716
dbus_object_path: dbus.ObjectPath
1715
717
bus: dbus.SystemBus()
1716
718
"""
1717
719
1718
720
runtime_expansions = (Client.runtime_expansions
1719
+ ("dbus_object_path", ))
1720
1721
_interface = "se.recompile.Mandos.Client"
1722
721
+ (u"dbus_object_path",))
722
1723
723
# dbus.service.Object doesn't use super(), so we can't either.
1724
1725
def __init__(self, bus=None, *args, **kwargs):
724
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
1726
727
self.bus = bus
1727
728
Client.__init__(self, *args, **kwargs)
1728
729
# Only now, when this client is initialized, can it show up on
1729
730
# the D-Bus
1730
client_object_name = str(self.name).translate(
1731
{ord("."): ord("_"),
1732
ord("-"): ord("_")})
1733
self.dbus_object_path = dbus.ObjectPath(
1734
"/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))
1735
736
DBusObjectWithProperties.__init__(self, self.bus,
1736
737
self.dbus_object_path)
1737
1738
def notifychangeproperty(transform_func, dbus_name,
1739
type_func=lambda x: x,
1740
variant_level=1,
1741
invalidate_only=False,
1742
_interface=_interface):
1743
""" Modify a variable so that it's a property which announces
1744
its changes to DBus.
1745
1746
transform_fun: Function that takes a value and a variant_level
1747
and transforms it to a D-Bus type.
1748
dbus_name: D-Bus name of the variable
1749
type_func: Function that transform the value before sending it
1750
to the D-Bus. Default: no transform
1751
variant_level: D-Bus variant level. Default: 1
1752
"""
1753
attrname = "_{}".format(dbus_name)
1754
1755
def setter(self, value):
1756
if hasattr(self, "dbus_object_path"):
1757
if (not hasattr(self, attrname) or
1758
type_func(getattr(self, attrname, None))
1759
!= type_func(value)):
1760
if invalidate_only:
1761
self.PropertiesChanged(
1762
_interface, dbus.Dictionary(),
1763
dbus.Array((dbus_name, )))
1764
else:
1765
dbus_value = transform_func(
1766
type_func(value),
1767
variant_level=variant_level)
1768
self.PropertyChanged(dbus.String(dbus_name),
1769
dbus_value)
1770
self.PropertiesChanged(
1771
_interface,
1772
dbus.Dictionary({dbus.String(dbus_name):
1773
dbus_value}),
1774
dbus.Array())
1775
setattr(self, attrname, value)
1776
1777
return property(lambda self: getattr(self, attrname), setter)
1778
1779
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1780
approvals_pending = notifychangeproperty(dbus.Boolean,
1781
"ApprovalPending",
1782
type_func=bool)
1783
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1784
last_enabled = notifychangeproperty(datetime_to_dbus,
1785
"LastEnabled")
1786
checker = notifychangeproperty(
1787
dbus.Boolean, "CheckerRunning",
1788
type_func=lambda checker: checker is not None)
1789
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1790
"LastCheckedOK")
1791
last_checker_status = notifychangeproperty(dbus.Int16,
1792
"LastCheckerStatus")
1793
last_approval_request = notifychangeproperty(
1794
datetime_to_dbus, "LastApprovalRequest")
1795
approved_by_default = notifychangeproperty(dbus.Boolean,
1796
"ApprovedByDefault")
1797
approval_delay = notifychangeproperty(
1798
dbus.UInt64, "ApprovalDelay",
1799
type_func=lambda td: td.total_seconds() * 1000)
1800
approval_duration = notifychangeproperty(
1801
dbus.UInt64, "ApprovalDuration",
1802
type_func=lambda td: td.total_seconds() * 1000)
1803
host = notifychangeproperty(dbus.String, "Host")
1804
timeout = notifychangeproperty(
1805
dbus.UInt64, "Timeout",
1806
type_func=lambda td: td.total_seconds() * 1000)
1807
extended_timeout = notifychangeproperty(
1808
dbus.UInt64, "ExtendedTimeout",
1809
type_func=lambda td: td.total_seconds() * 1000)
1810
interval = notifychangeproperty(
1811
dbus.UInt64, "Interval",
1812
type_func=lambda td: td.total_seconds() * 1000)
1813
checker_command = notifychangeproperty(dbus.String, "Checker")
1814
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1815
invalidate_only=True)
1816
1817
del notifychangeproperty
1818
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
782
1819
783
def __del__(self, *args, **kwargs):
1820
784
try:
1821
785
self.remove_from_connection()
1822
786
except LookupError:
1823
787
pass
1824
if hasattr(DBusObjectWithProperties, "__del__"):
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1825
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1826
790
Client.__del__(self, *args, **kwargs)
1827
1828
def checker_callback(self, source, condition,
1829
connection, command, *args, **kwargs):
1830
ret = Client.checker_callback(self, source, condition,
1831
connection, command, *args,
1832
**kwargs)
1833
exitstatus = self.last_checker_status
1834
if exitstatus >= 0:
791
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)
1835
801
# Emit D-Bus signal
1836
802
self.CheckerCompleted(dbus.Int16(exitstatus),
1837
# This is specific to GNU libC
1838
dbus.Int64(exitstatus << 8),
803
dbus.Int64(condition),
1839
804
dbus.String(command))
1840
805
else:
1841
806
# Emit D-Bus signal
1842
807
self.CheckerCompleted(dbus.Int16(-1),
1843
dbus.Int64(
1844
# This is specific to GNU libC
1845
(exitstatus << 8)
1846
| self.last_checker_signal),
808
dbus.Int64(condition),
1847
809
dbus.String(command))
1848
return ret
1849
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
831
1850
832
def start_checker(self, *args, **kwargs):
1851
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
1852
838
r = Client.start_checker(self, *args, **kwargs)
1853
839
# Only if new checker process was started
1854
840
if (self.checker is not None
1855
841
and old_checker_pid != self.checker.pid):
1856
842
# Emit D-Bus signal
1857
843
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
return r
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))
1858
856
return r
1859
857
1860
858
def _reset_approved(self):
1861
self.approved = None
859
self._approved = None
1862
860
return False
1863
861
1864
862
def approve(self, value=True):
1865
self.approved = value
1866
GLib.timeout_add(int(self.approval_duration.total_seconds()
1867
* 1000), self._reset_approved)
1868
863
self.send_changedstate()
1869
1870
# D-Bus methods, signals & properties
1871
1872
# Interfaces
1873
1874
# Signals
1875
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
870
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
872
873
## Signals
874
1876
875
# CheckerCompleted - signal
1877
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
1878
877
def CheckerCompleted(self, exitcode, waitstatus, command):
1879
878
"D-Bus signal"
1880
879
pass
1881
880
1882
881
# CheckerStarted - signal
1883
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
1884
883
def CheckerStarted(self, command):
1885
884
"D-Bus signal"
1886
885
pass
1887
886
1888
887
# PropertyChanged - signal
1889
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1890
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
1891
889
def PropertyChanged(self, property, value):
1892
890
"D-Bus signal"
1893
891
pass
1894
892
1895
893
# GotSecret - signal
1896
894
@dbus.service.signal(_interface)
1897
895
def GotSecret(self):
1900
898
server to mandos-client
1901
899
"""
1902
900
pass
1903
901
1904
902
# Rejected - signal
1905
@dbus.service.signal(_interface, signature="s")
903
@dbus.service.signal(_interface, signature=u"s")
1906
904
def Rejected(self, reason):
1907
905
"D-Bus signal"
1908
906
pass
1909
907
1910
908
# NeedApproval - signal
1911
@dbus.service.signal(_interface, signature="tb")
909
@dbus.service.signal(_interface, signature=u"tb")
1912
910
def NeedApproval(self, timeout, default):
1913
911
"D-Bus signal"
1914
912
return self.need_approval()
1915
1916
# Methods
1917
913
914
## Methods
915
1918
916
# Approve - method
1919
@dbus.service.method(_interface, in_signature="b")
917
@dbus.service.method(_interface, in_signature=u"b")
1920
918
def Approve(self, value):
1921
919
self.approve(value)
1922
920
1923
921
# CheckedOK - method
1924
922
@dbus.service.method(_interface)
1925
923
def CheckedOK(self):
1926
self.checked_ok()
1927
924
return self.checked_ok()
925
1928
926
# Enable - method
1929
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1930
927
@dbus.service.method(_interface)
1931
928
def Enable(self):
1932
929
"D-Bus method"
1933
930
self.enable()
1934
931
1935
932
# StartChecker - method
1936
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1937
933
@dbus.service.method(_interface)
1938
934
def StartChecker(self):
1939
935
"D-Bus method"
1940
936
self.start_checker()
1941
937
1942
938
# Disable - method
1943
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1944
939
@dbus.service.method(_interface)
1945
940
def Disable(self):
1946
941
"D-Bus method"
1947
942
self.disable()
1948
943
1949
944
# StopChecker - method
1950
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1951
945
@dbus.service.method(_interface)
1952
946
def StopChecker(self):
1953
947
self.stop_checker()
1954
1955
# Properties
1956
948
949
## Properties
950
1957
951
# ApprovalPending - property
1958
@dbus_service_property(_interface, signature="b", access="read")
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1959
953
def ApprovalPending_dbus_property(self):
1960
954
return dbus.Boolean(bool(self.approvals_pending))
1961
955
1962
956
# ApprovedByDefault - property
1963
@dbus_service_property(_interface,
1964
signature="b",
1965
access="readwrite")
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1966
959
def ApprovedByDefault_dbus_property(self, value=None):
1967
960
if value is None: # get
1968
961
return dbus.Boolean(self.approved_by_default)
1969
962
self.approved_by_default = bool(value)
1970
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1971
967
# ApprovalDelay - property
1972
@dbus_service_property(_interface,
1973
signature="t",
1974
access="readwrite")
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1975
970
def ApprovalDelay_dbus_property(self, value=None):
1976
971
if value is None: # get
1977
return dbus.UInt64(self.approval_delay.total_seconds()
1978
* 1000)
972
return dbus.UInt64(self.approval_delay_milliseconds())
1979
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1980
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1981
978
# ApprovalDuration - property
1982
@dbus_service_property(_interface,
1983
signature="t",
1984
access="readwrite")
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1985
981
def ApprovalDuration_dbus_property(self, value=None):
1986
982
if value is None: # get
1987
return dbus.UInt64(self.approval_duration.total_seconds()
1988
* 1000)
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1989
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1990
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1991
990
# Name - property
1992
@dbus_annotations(
1993
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1994
@dbus_service_property(_interface, signature="s", access="read")
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1995
992
def Name_dbus_property(self):
1996
993
return dbus.String(self.name)
1997
994
1998
995
# Fingerprint - property
1999
@dbus_annotations(
2000
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2001
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
2002
997
def Fingerprint_dbus_property(self):
2003
998
return dbus.String(self.fingerprint)
2004
999
2005
1000
# Host - property
2006
@dbus_service_property(_interface,
2007
signature="s",
2008
access="readwrite")
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
2009
1003
def Host_dbus_property(self, value=None):
2010
1004
if value is None: # get
2011
1005
return dbus.String(self.host)
2012
self.host = str(value)
2013
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1010
2014
1011
# Created - property
2015
@dbus_annotations(
2016
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2017
@dbus_service_property(_interface, signature="s", access="read")
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
2018
1013
def Created_dbus_property(self):
2019
return datetime_to_dbus(self.created)
2020
1014
return dbus.String(self._datetime_to_dbus(self.created))
1015
2021
1016
# LastEnabled - property
2022
@dbus_service_property(_interface, signature="s", access="read")
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
2023
1018
def LastEnabled_dbus_property(self):
2024
return datetime_to_dbus(self.last_enabled)
2025
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
2026
1023
# Enabled - property
2027
@dbus_service_property(_interface,
2028
signature="b",
2029
access="readwrite")
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
2030
1026
def Enabled_dbus_property(self, value=None):
2031
1027
if value is None: # get
2032
1028
return dbus.Boolean(self.enabled)
2034
1030
self.enable()
2035
1031
else:
2036
1032
self.disable()
2037
1033
2038
1034
# LastCheckedOK - property
2039
@dbus_service_property(_interface,
2040
signature="s",
2041
access="readwrite")
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
2042
1037
def LastCheckedOK_dbus_property(self, value=None):
2043
1038
if value is not None:
2044
1039
self.checked_ok()
2045
1040
return
2046
return datetime_to_dbus(self.last_checked_ok)
2047
2048
# LastCheckerStatus - property
2049
@dbus_service_property(_interface, signature="n", access="read")
2050
def LastCheckerStatus_dbus_property(self):
2051
return dbus.Int16(self.last_checker_status)
2052
2053
# Expires - property
2054
@dbus_service_property(_interface, signature="s", access="read")
2055
def Expires_dbus_property(self):
2056
return datetime_to_dbus(self.expires)
2057
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))
1045
2058
1046
# LastApprovalRequest - property
2059
@dbus_service_property(_interface, signature="s", access="read")
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
2060
1048
def LastApprovalRequest_dbus_property(self):
2061
return datetime_to_dbus(self.last_approval_request)
2062
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))
1054
2063
1055
# Timeout - property
2064
@dbus_service_property(_interface,
2065
signature="t",
2066
access="readwrite")
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
2067
1058
def Timeout_dbus_property(self, value=None):
2068
1059
if value is None: # get
2069
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2070
old_timeout = self.timeout
1060
return dbus.UInt64(self.timeout_milliseconds())
2071
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
2072
# Reschedule disabling
2073
if self.enabled:
2074
now = datetime.datetime.utcnow()
2075
self.expires += self.timeout - old_timeout
2076
if self.expires <= now:
2077
# The timeout has passed
2078
self.disable()
2079
else:
2080
if (getattr(self, "disable_initiator_tag", None)
2081
is None):
2082
return
2083
GLib.source_remove(self.disable_initiator_tag)
2084
self.disable_initiator_tag = GLib.timeout_add(
2085
int((self.expires - now).total_seconds() * 1000),
2086
self.disable)
2087
2088
# ExtendedTimeout - property
2089
@dbus_service_property(_interface,
2090
signature="t",
2091
access="readwrite")
2092
def ExtendedTimeout_dbus_property(self, value=None):
2093
if value is None: # get
2094
return dbus.UInt64(self.extended_timeout.total_seconds()
2095
* 1000)
2096
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2097
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))
1082
2098
1083
# Interval - property
2099
@dbus_service_property(_interface,
2100
signature="t",
2101
access="readwrite")
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
2102
1086
def Interval_dbus_property(self, value=None):
2103
1087
if value is None: # get
2104
return dbus.UInt64(self.interval.total_seconds() * 1000)
1088
return dbus.UInt64(self.interval_milliseconds())
2105
1089
self.interval = datetime.timedelta(0, 0, 0, value)
2106
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:
2107
1094
return
2108
if self.enabled:
2109
# Reschedule checker run
2110
GLib.source_remove(self.checker_initiator_tag)
2111
self.checker_initiator_tag = GLib.timeout_add(
2112
value, self.start_checker)
2113
self.start_checker() # Start one now, too
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
2114
1100
2115
1101
# Checker - property
2116
@dbus_service_property(_interface,
2117
signature="s",
2118
access="readwrite")
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
2119
1104
def Checker_dbus_property(self, value=None):
2120
1105
if value is None: # get
2121
1106
return dbus.String(self.checker_command)
2122
self.checker_command = str(value)
2123
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))
1112
2124
1113
# CheckerRunning - property
2125
@dbus_service_property(_interface,
2126
signature="b",
2127
access="readwrite")
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
2128
1116
def CheckerRunning_dbus_property(self, value=None):
2129
1117
if value is None: # get
2130
1118
return dbus.Boolean(self.checker is not None)
2132
1120
self.start_checker()
2133
1121
else:
2134
1122
self.stop_checker()
2135
1123
2136
1124
# ObjectPath - property
2137
@dbus_annotations(
2138
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2139
"org.freedesktop.DBus.Deprecated": "true"})
2140
@dbus_service_property(_interface, signature="o", access="read")
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
2141
1126
def ObjectPath_dbus_property(self):
2142
return self.dbus_object_path # is already a dbus.ObjectPath
2143
1127
return self.dbus_object_path # is already a dbus.ObjectPath
1128
2144
1129
# Secret = property
2145
@dbus_annotations(
2146
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2147
"invalidates"})
2148
@dbus_service_property(_interface,
2149
signature="ay",
2150
access="write",
2151
byte_arrays=True)
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
2152
1132
def Secret_dbus_property(self, value):
2153
self.secret = bytes(value)
2154
1133
self.secret = str(value)
1134
2155
1135
del _interface
2156
1136
2157
1137
2160
1140
self._pipe = child_pipe
2161
1141
self._pipe.send(('init', fpr, address))
2162
1142
if not self._pipe.recv():
2163
raise KeyError(fpr)
1143
raise KeyError()
2164
1144
2165
1145
def __getattribute__(self, name):
2166
if name == '_pipe':
1146
if(name == '_pipe'):
2167
1147
return super(ProxyClient, self).__getattribute__(name)
2168
1148
self._pipe.send(('getattr', name))
2169
1149
data = self._pipe.recv()
2170
1150
if data[0] == 'data':
2171
1151
return data[1]
2172
1152
if data[0] == 'function':
2173
2174
1153
def func(*args, **kwargs):
2175
1154
self._pipe.send(('funcall', name, args, kwargs))
2176
1155
return self._pipe.recv()[1]
2177
2178
1156
return func
2179
1157
2180
1158
def __setattr__(self, name, value):
2181
if name == '_pipe':
1159
if(name == '_pipe'):
2182
1160
return super(ProxyClient, self).__setattr__(name, value)
2183
1161
self._pipe.send(('setattr', name, value))
2184
1162
2185
1163
2186
1164
class ClientHandler(socketserver.BaseRequestHandler, object):
2187
1165
"""A class to handle client connections.
2188
1166
2189
1167
Instantiated once for each connection to handle it.
2190
1168
Note: This will run in its own forked process."""
2191
1169
2192
1170
def handle(self):
2193
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
2194
logger.info("TCP connection from: %s",
2195
str(self.client_address))
2196
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",
2197
1175
self.server.child_pipe.fileno())
2198
1176
2199
session = gnutls.ClientSession(self.request)
2200
2201
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2202
# "+AES-256-CBC", "+SHA1",
2203
# "+COMP-NULL", "+CTYPE-OPENPGP",
2204
# "+DHE-DSS"))
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"))
2205
1191
# Use a fallback default, since this MUST be set.
2206
1192
priority = self.server.gnutls_priority
2207
1193
if priority is None:
2208
priority = "NORMAL"
2209
gnutls.priority_set_direct(session._c_object,
2210
priority.encode("utf-8"),
2211
None)
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
2212
1198
2213
1199
# Start communication using the Mandos protocol
2214
1200
# Get protocol number
2215
1201
line = self.request.makefile().readline()
2216
logger.debug("Protocol version: %r", line)
1202
logger.debug(u"Protocol version: %r", line)
2217
1203
try:
2218
1204
if int(line.strip().split()[0]) > 1:
2219
raise RuntimeError(line)
2220
except (ValueError, IndexError, RuntimeError) as error:
2221
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)
2222
1208
return
2223
1209
2224
1210
# Start GnuTLS connection
2225
1211
try:
2226
1212
session.handshake()
2227
except gnutls.Error as error:
2228
logger.warning("Handshake failed: %s", error)
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
2229
1215
# Do not run session.bye() here: the session is not
2230
1216
# established. Just abandon the request.
2231
1217
return
2232
logger.debug("Handshake succeeded")
1218
logger.debug(u"Handshake succeeded")
2233
1219
2234
1220
approval_required = False
2235
1221
try:
2236
1222
try:
2237
fpr = self.fingerprint(
2238
self.peer_certificate(session))
2239
except (TypeError, gnutls.Error) as error:
2240
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)
2241
1227
return
2242
logger.debug("Fingerprint: %s", fpr)
1228
logger.debug(u"Fingerprint: %s", fpr)
2243
1229
2244
1230
try:
2245
1231
client = ProxyClient(child_pipe, fpr,
2246
1232
self.client_address)
2247
1233
except KeyError:
2248
1234
return
2249
1235
2250
1236
if client.approval_delay:
2251
1237
delay = client.approval_delay
2252
1238
client.approvals_pending += 1
2253
1239
approval_required = True
2254
1240
2255
1241
while True:
2256
1242
if not client.enabled:
2257
logger.info("Client %s is disabled",
2258
client.name)
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
2259
1245
if self.server.use_dbus:
2260
1246
# Emit D-Bus signal
2261
client.Rejected("Disabled")
1247
client.Rejected("Disabled")
2262
1248
return
2263
2264
if client.approved or not client.approval_delay:
2265
# We are approved or approval is disabled
1249
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
2266
1252
break
2267
elif client.approved is None:
2268
logger.info("Client %s needs approval",
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
2269
1255
client.name)
2270
1256
if self.server.use_dbus:
2271
1257
# Emit D-Bus signal
2272
1258
client.NeedApproval(
2273
client.approval_delay.total_seconds()
2274
* 1000, client.approved_by_default)
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
2275
1261
else:
2276
logger.warning("Client %s was not approved",
1262
logger.warning(u"Client %s was not approved",
2277
1263
client.name)
2278
1264
if self.server.use_dbus:
2279
1265
# Emit D-Bus signal
2280
1266
client.Rejected("Denied")
2281
1267
return
2282
2283
# wait until timeout or approved
1268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
2284
1271
time = datetime.datetime.now()
2285
1272
client.changedstate.acquire()
2286
client.changedstate.wait(delay.total_seconds())
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2287
1274
client.changedstate.release()
2288
1275
time2 = datetime.datetime.now()
2289
1276
if (time2 - time) >= delay:
2299
1286
break
2300
1287
else:
2301
1288
delay -= time2 - time
2302
2303
try:
2304
session.send(client.secret)
2305
except gnutls.Error as error:
2306
logger.warning("gnutls send failed",
2307
exc_info=error)
2308
return
2309
2310
logger.info("Sending secret to %s", client.name)
2311
# bump the timeout using extended_timeout
2312
client.bump_timeout(client.extended_timeout)
1289
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()
2313
1305
if self.server.use_dbus:
2314
1306
# Emit D-Bus signal
2315
1307
client.GotSecret()
2316
1308
2317
1309
finally:
2318
1310
if approval_required:
2319
1311
client.approvals_pending -= 1
2320
1312
try:
2321
1313
session.bye()
2322
except gnutls.Error as error:
2323
logger.warning("GnuTLS bye failed",
2324
exc_info=error)
2325
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1316
2326
1317
@staticmethod
2327
1318
def peer_certificate(session):
2328
1319
"Return the peer's OpenPGP certificate as a bytestring"
2329
1320
# If not an OpenPGP certificate...
2330
if (gnutls.certificate_type_get(session._c_object)
2331
!= gnutls.CRT_OPENPGP):
2332
# ...return invalid data
2333
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
2334
1326
list_size = ctypes.c_uint(1)
2335
cert_list = (gnutls.certificate_get_peers
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
2336
1329
(session._c_object, ctypes.byref(list_size)))
2337
1330
if not bool(cert_list) and list_size.value != 0:
2338
raise gnutls.Error("error getting peer certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2339
1333
if list_size.value == 0:
2340
1334
return None
2341
1335
cert = cert_list[0]
2342
1336
return ctypes.string_at(cert.data, cert.size)
2343
1337
2344
1338
@staticmethod
2345
1339
def fingerprint(openpgp):
2346
1340
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2347
1341
# New GnuTLS "datum" with the OpenPGP public key
2348
datum = gnutls.datum_t(
2349
ctypes.cast(ctypes.c_char_p(openpgp),
2350
ctypes.POINTER(ctypes.c_ubyte)),
2351
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))))
2352
1347
# New empty GnuTLS certificate
2353
crt = gnutls.openpgp_crt_t()
2354
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)))
2355
1351
# Import the OpenPGP public key into the certificate
2356
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2357
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))
2358
1356
# Verify the self signature in the key
2359
1357
crtverify = ctypes.c_uint()
2360
gnutls.openpgp_crt_verify_self(crt, 0,
2361
ctypes.byref(crtverify))
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2362
1361
if crtverify.value != 0:
2363
gnutls.openpgp_crt_deinit(crt)
2364
raise gnutls.CertificateSecurityError("Verify failed")
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2365
1365
# New buffer for the fingerprint
2366
1366
buf = ctypes.create_string_buffer(20)
2367
1367
buf_len = ctypes.c_size_t()
2368
1368
# Get the fingerprint from the certificate into the buffer
2369
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2370
ctypes.byref(buf_len))
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2371
1372
# Deinit the certificate
2372
gnutls.openpgp_crt_deinit(crt)
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2373
1374
# Convert the buffer to a Python bytestring
2374
1375
fpr = ctypes.string_at(buf, buf_len.value)
2375
1376
# Convert the bytestring to hexadecimal notation
2376
hex_fpr = binascii.hexlify(fpr).upper()
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2377
1378
return hex_fpr
2378
1379
2379
1380
2380
1381
class MultiprocessingMixIn(object):
2381
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2382
2383
1383
def sub_process_main(self, request, address):
2384
1384
try:
2385
1385
self.finish_request(request, address)
2386
except Exception:
1386
except:
2387
1387
self.handle_error(request, address)
2388
1388
self.close_request(request)
2389
1389
2390
1390
def process_request(self, request, address):
2391
1391
"""Start a new process to process the request."""
2392
proc = multiprocessing.Process(target=self.sub_process_main,
2393
args=(request, address))
2394
proc.start()
2395
return proc
2396
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
2397
1394
2398
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2399
1396
""" adds a pipe to the MixIn """
2400
2401
1397
def process_request(self, request, client_address):
2402
1398
"""Overrides and wraps the original process_request().
2403
1399
2404
1400
This function creates a new pipe in self.pipe
2405
1401
"""
2406
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2407
1403
2408
proc = MultiprocessingMixIn.process_request(self, request,
2409
client_address)
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2410
1406
self.child_pipe.close()
2411
self.add_pipe(parent_pipe, proc)
1407
self.add_pipe(parent_pipe)
2412
1408
2413
def add_pipe(self, parent_pipe, proc):
1409
def add_pipe(self, parent_pipe):
2414
1410
"""Dummy function; override as necessary"""
2415
raise NotImplementedError()
2416
1411
pass
2417
1412
2418
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2419
1414
socketserver.TCPServer, object):
2420
1415
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2421
1416
2422
1417
Attributes:
2423
1418
enabled: Boolean; whether this server is activated yet
2424
1419
interface: None or a network interface name (string)
2425
1420
use_ipv6: Boolean; to use IPv6 or not
2426
1421
"""
2427
2428
1422
def __init__(self, server_address, RequestHandlerClass,
2429
interface=None,
2430
use_ipv6=True,
2431
socketfd=None):
2432
"""If socketfd is set, use that file descriptor instead of
2433
creating a new one with socket.socket().
2434
"""
1423
interface=None, use_ipv6=True):
2435
1424
self.interface = interface
2436
1425
if use_ipv6:
2437
1426
self.address_family = socket.AF_INET6
2438
if socketfd is not None:
2439
# Save the file descriptor
2440
self.socketfd = socketfd
2441
# Save the original socket.socket() function
2442
self.socket_socket = socket.socket
2443
2444
# To implement --socket, we monkey patch socket.socket.
2445
#
2446
# (When socketserver.TCPServer is a new-style class, we
2447
# could make self.socket into a property instead of monkey
2448
# patching socket.socket.)
2449
#
2450
# Create a one-time-only replacement for socket.socket()
2451
@functools.wraps(socket.socket)
2452
def socket_wrapper(*args, **kwargs):
2453
# Restore original function so subsequent calls are
2454
# not affected.
2455
socket.socket = self.socket_socket
2456
del self.socket_socket
2457
# This time only, return a new socket object from the
2458
# saved file descriptor.
2459
return socket.fromfd(self.socketfd, *args, **kwargs)
2460
# Replace socket.socket() function with wrapper
2461
socket.socket = socket_wrapper
2462
# The socketserver.TCPServer.__init__ will call
2463
# socket.socket(), which might be our replacement,
2464
# socket_wrapper(), if socketfd was set.
2465
1427
socketserver.TCPServer.__init__(self, server_address,
2466
1428
RequestHandlerClass)
2467
2468
1429
def server_bind(self):
2469
1430
"""This overrides the normal server_bind() function
2470
1431
to bind to an interface if one was specified, and also NOT to
2471
1432
bind to an address or port if they were not specified."""
2472
global SO_BINDTODEVICE
2473
1433
if self.interface is not None:
2474
1434
if SO_BINDTODEVICE is None:
2475
# Fall back to a hard-coded value which seems to be
2476
# common enough.
2477
logger.warning("SO_BINDTODEVICE not found, trying 25")
2478
SO_BINDTODEVICE = 25
2479
try:
2480
self.socket.setsockopt(
2481
socket.SOL_SOCKET, SO_BINDTODEVICE,
2482
(self.interface + "\0").encode("utf-8"))
2483
except socket.error as error:
2484
if error.errno == errno.EPERM:
2485
logger.error("No permission to bind to"
2486
" interface %s", self.interface)
2487
elif error.errno == errno.ENOPROTOOPT:
2488
logger.error("SO_BINDTODEVICE not available;"
2489
" cannot bind to interface %s",
2490
self.interface)
2491
elif error.errno == errno.ENODEV:
2492
logger.error("Interface %s does not exist,"
2493
" cannot bind", self.interface)
2494
else:
2495
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
2496
1455
# Only bind(2) the socket if we really need to.
2497
1456
if self.server_address[0] or self.server_address[1]:
2498
1457
if not self.server_address[0]:
2499
1458
if self.address_family == socket.AF_INET6:
2500
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
2501
1460
else:
2502
any_address = "0.0.0.0" # INADDR_ANY
1461
any_address = socket.INADDR_ANY
2503
1462
self.server_address = (any_address,
2504
1463
self.server_address[1])
2505
1464
elif not self.server_address[1]:
2506
self.server_address = (self.server_address[0], 0)
1465
self.server_address = (self.server_address[0],
1466
0)
2507
1467
# if self.interface:
2508
1468
# self.server_address = (self.server_address[0],
2509
1469
# 0, # port
2515
1475
2516
1476
class MandosServer(IPv6_TCPServer):
2517
1477
"""Mandos server.
2518
1478
2519
1479
Attributes:
2520
1480
clients: set of Client objects
2521
1481
gnutls_priority GnuTLS priority string
2522
1482
use_dbus: Boolean; to emit D-Bus signals or not
2523
2524
Assumes a GLib.MainLoop event loop.
1483
1484
Assumes a gobject.MainLoop event loop.
2525
1485
"""
2526
2527
1486
def __init__(self, server_address, RequestHandlerClass,
2528
interface=None,
2529
use_ipv6=True,
2530
clients=None,
2531
gnutls_priority=None,
2532
use_dbus=True,
2533
socketfd=None):
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2534
1489
self.enabled = False
2535
1490
self.clients = clients
2536
1491
if self.clients is None:
2537
self.clients = {}
1492
self.clients = set()
2538
1493
self.use_dbus = use_dbus
2539
1494
self.gnutls_priority = gnutls_priority
2540
1495
IPv6_TCPServer.__init__(self, server_address,
2541
1496
RequestHandlerClass,
2542
interface=interface,
2543
use_ipv6=use_ipv6,
2544
socketfd=socketfd)
2545
1497
interface = interface,
1498
use_ipv6 = use_ipv6)
2546
1499
def server_activate(self):
2547
1500
if self.enabled:
2548
1501
return socketserver.TCPServer.server_activate(self)
2549
2550
1502
def enable(self):
2551
1503
self.enabled = True
2552
2553
def add_pipe(self, parent_pipe, proc):
1504
def add_pipe(self, parent_pipe):
2554
1505
# Call "handle_ipc" for both data and EOF events
2555
GLib.io_add_watch(
2556
parent_pipe.fileno(),
2557
GLib.IO_IN | GLib.IO_HUP,
2558
functools.partial(self.handle_ipc,
2559
parent_pipe=parent_pipe,
2560
proc=proc))
2561
2562
def handle_ipc(self, source, condition,
2563
parent_pipe=None,
2564
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,
2565
1512
client_object=None):
2566
# error, or the other end of multiprocessing.Pipe has closed
2567
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2568
# Wait for other process to exit
2569
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):
2570
1529
return False
2571
1530
2572
1531
# Read a request from the child
2573
1532
request = parent_pipe.recv()
2574
1533
command = request[0]
2575
1534
2576
1535
if command == 'init':
2577
1536
fpr = request[1]
2578
1537
address = request[2]
2579
2580
for c in self.clients.values():
1538
1539
for c in self.clients:
2581
1540
if c.fingerprint == fpr:
2582
1541
client = c
2583
1542
break
2584
1543
else:
2585
logger.info("Client not found for fingerprint: %s, ad"
2586
"dress: %s", fpr, address)
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2587
1546
if self.use_dbus:
2588
1547
# Emit D-Bus signal
2589
mandos_dbus_service.ClientNotFound(fpr,
2590
address[0])
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2591
1549
parent_pipe.send(False)
2592
1550
return False
2593
2594
GLib.io_add_watch(
2595
parent_pipe.fileno(),
2596
GLib.IO_IN | GLib.IO_HUP,
2597
functools.partial(self.handle_ipc,
2598
parent_pipe=parent_pipe,
2599
proc=proc,
2600
client_object=client))
1551
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))
2601
1557
parent_pipe.send(True)
2602
# remove the old hook in favor of the new above hook on
2603
# same fileno
1558
# remove the old hook in favor of the new above hook on same fileno
2604
1559
return False
2605
1560
if command == 'funcall':
2606
1561
funcname = request[1]
2607
1562
args = request[2]
2608
1563
kwargs = request[3]
2609
2610
parent_pipe.send(('data', getattr(client_object,
2611
funcname)(*args,
2612
**kwargs)))
1564
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2613
1566
2614
1567
if command == 'getattr':
2615
1568
attrname = request[1]
2616
if isinstance(client_object.__getattribute__(attrname),
2617
collections.Callable):
2618
parent_pipe.send(('function', ))
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2619
1571
else:
2620
parent_pipe.send((
2621
'data', client_object.__getattribute__(attrname)))
2622
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1573
2623
1574
if command == 'setattr':
2624
1575
attrname = request[1]
2625
1576
value = request[2]
2628
1579
return True
2629
1580
2630
1581
2631
def rfc3339_duration_to_delta(duration):
2632
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2633
2634
>>> rfc3339_duration_to_delta("P7D")
2635
datetime.timedelta(7)
2636
>>> rfc3339_duration_to_delta("PT60S")
2637
datetime.timedelta(0, 60)
2638
>>> rfc3339_duration_to_delta("PT60M")
2639
datetime.timedelta(0, 3600)
2640
>>> rfc3339_duration_to_delta("PT24H")
2641
datetime.timedelta(1)
2642
>>> rfc3339_duration_to_delta("P1W")
2643
datetime.timedelta(7)
2644
>>> rfc3339_duration_to_delta("PT5M30S")
2645
datetime.timedelta(0, 330)
2646
>>> rfc3339_duration_to_delta("P1DT3M20S")
2647
datetime.timedelta(1, 200)
2648
"""
2649
2650
# Parsing an RFC 3339 duration with regular expressions is not
2651
# possible - there would have to be multiple places for the same
2652
# values, like seconds. The current code, while more esoteric, is
2653
# cleaner without depending on a parsing library. If Python had a
2654
# built-in library for parsing we would use it, but we'd like to
2655
# avoid excessive use of external libraries.
2656
2657
# New type for defining tokens, syntax, and semantics all-in-one
2658
Token = collections.namedtuple("Token", (
2659
"regexp", # To match token; if "value" is not None, must have
2660
# a "group" containing digits
2661
"value", # datetime.timedelta or None
2662
"followers")) # Tokens valid after this token
2663
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2664
# the "duration" ABNF definition in RFC 3339, Appendix A.
2665
token_end = Token(re.compile(r"$"), None, frozenset())
2666
token_second = Token(re.compile(r"(\d+)S"),
2667
datetime.timedelta(seconds=1),
2668
frozenset((token_end, )))
2669
token_minute = Token(re.compile(r"(\d+)M"),
2670
datetime.timedelta(minutes=1),
2671
frozenset((token_second, token_end)))
2672
token_hour = Token(re.compile(r"(\d+)H"),
2673
datetime.timedelta(hours=1),
2674
frozenset((token_minute, token_end)))
2675
token_time = Token(re.compile(r"T"),
2676
None,
2677
frozenset((token_hour, token_minute,
2678
token_second)))
2679
token_day = Token(re.compile(r"(\d+)D"),
2680
datetime.timedelta(days=1),
2681
frozenset((token_time, token_end)))
2682
token_month = Token(re.compile(r"(\d+)M"),
2683
datetime.timedelta(weeks=4),
2684
frozenset((token_day, token_end)))
2685
token_year = Token(re.compile(r"(\d+)Y"),
2686
datetime.timedelta(weeks=52),
2687
frozenset((token_month, token_end)))
2688
token_week = Token(re.compile(r"(\d+)W"),
2689
datetime.timedelta(weeks=1),
2690
frozenset((token_end, )))
2691
token_duration = Token(re.compile(r"P"), None,
2692
frozenset((token_year, token_month,
2693
token_day, token_time,
2694
token_week)))
2695
# Define starting values:
2696
# Value so far
2697
value = datetime.timedelta()
2698
found_token = None
2699
# Following valid tokens
2700
followers = frozenset((token_duration, ))
2701
# String left to parse
2702
s = duration
2703
# Loop until end token is found
2704
while found_token is not token_end:
2705
# Search for any currently valid tokens
2706
for token in followers:
2707
match = token.regexp.match(s)
2708
if match is not None:
2709
# Token found
2710
if token.value is not None:
2711
# Value found, parse digits
2712
factor = int(match.group(1), 10)
2713
# Add to value so far
2714
value += factor * token.value
2715
# Strip token from string
2716
s = token.regexp.sub("", s, 1)
2717
# Go to found token
2718
found_token = token
2719
# Set valid next tokens
2720
followers = found_token.followers
2721
break
2722
else:
2723
# No currently valid tokens were found
2724
raise ValueError("Invalid RFC 3339 duration: {!r}"
2725
.format(duration))
2726
# End token found
2727
return value
2728
2729
2730
1582
def string_to_delta(interval):
2731
1583
"""Parse a string and return a datetime.timedelta
2732
2733
>>> string_to_delta('7d')
1584
1585
>>> string_to_delta(u'7d')
2734
1586
datetime.timedelta(7)
2735
>>> string_to_delta('60s')
1587
>>> string_to_delta(u'60s')
2736
1588
datetime.timedelta(0, 60)
2737
>>> string_to_delta('60m')
1589
>>> string_to_delta(u'60m')
2738
1590
datetime.timedelta(0, 3600)
2739
>>> string_to_delta('24h')
1591
>>> string_to_delta(u'24h')
2740
1592
datetime.timedelta(1)
2741
>>> string_to_delta('1w')
1593
>>> string_to_delta(u'1w')
2742
1594
datetime.timedelta(7)
2743
>>> string_to_delta('5m 30s')
1595
>>> string_to_delta(u'5m 30s')
2744
1596
datetime.timedelta(0, 330)
2745
1597
"""
2746
2747
try:
2748
return rfc3339_duration_to_delta(interval)
2749
except ValueError:
2750
pass
2751
2752
1598
timevalue = datetime.timedelta(0)
2753
1599
for s in interval.split():
2754
1600
try:
2755
suffix = s[-1]
1601
suffix = unicode(s[-1])
2756
1602
value = int(s[:-1])
2757
if suffix == "d":
1603
if suffix == u"d":
2758
1604
delta = datetime.timedelta(value)
2759
elif suffix == "s":
1605
elif suffix == u"s":
2760
1606
delta = datetime.timedelta(0, value)
2761
elif suffix == "m":
1607
elif suffix == u"m":
2762
1608
delta = datetime.timedelta(0, 0, 0, 0, value)
2763
elif suffix == "h":
1609
elif suffix == u"h":
2764
1610
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2765
elif suffix == "w":
1611
elif suffix == u"w":
2766
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2767
1613
else:
2768
raise ValueError("Unknown suffix {!r}".format(suffix))
2769
except IndexError as e:
2770
raise ValueError(*(e.args))
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2771
1617
timevalue += delta
2772
1618
return timevalue
2773
1619
2774
1620
2775
def daemon(nochdir=False, noclose=False):
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
1645
def daemon(nochdir = False, noclose = False):
2776
1646
"""See daemon(3). Standard BSD Unix function.
2777
1647
2778
1648
This should really exist as os.daemon, but it doesn't (yet)."""
2779
1649
if os.fork():
2780
1650
sys.exit()
2781
1651
os.setsid()
2782
1652
if not nochdir:
2783
os.chdir("/")
1653
os.chdir(u"/")
2784
1654
if os.fork():
2785
1655
sys.exit()
2786
1656
if not noclose:
2787
1657
# Close all standard open file descriptors
2788
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2789
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
2790
1660
raise OSError(errno.ENODEV,
2791
"{} not a character device"
2792
.format(os.devnull))
1661
u"%s not a character device"
1662
% os.path.devnull)
2793
1663
os.dup2(null, sys.stdin.fileno())
2794
1664
os.dup2(null, sys.stdout.fileno())
2795
1665
os.dup2(null, sys.stderr.fileno())
2798
1668
2799
1669
2800
1670
def main():
2801
1671
2802
1672
##################################################################
2803
1673
# Parsing of options, both command line and config file
2804
2805
parser = argparse.ArgumentParser()
2806
parser.add_argument("-v", "--version", action="version",
2807
version="%(prog)s {}".format(version),
2808
help="show version number and exit")
2809
parser.add_argument("-i", "--interface", metavar="IF",
2810
help="Bind to interface IF")
2811
parser.add_argument("-a", "--address",
2812
help="Address to listen for requests on")
2813
parser.add_argument("-p", "--port", type=int,
2814
help="Port number to receive requests on")
2815
parser.add_argument("--check", action="store_true",
2816
help="Run self-test")
2817
parser.add_argument("--debug", action="store_true",
2818
help="Debug mode; run in foreground and log"
2819
" to terminal", default=None)
2820
parser.add_argument("--debuglevel", metavar="LEVEL",
2821
help="Debug level for stdout output")
2822
parser.add_argument("--priority", help="GnuTLS"
2823
" priority string (see GnuTLS documentation)")
2824
parser.add_argument("--servicename",
2825
metavar="NAME", help="Zeroconf service name")
2826
parser.add_argument("--configdir",
2827
default="/etc/mandos", metavar="DIR",
2828
help="Directory to search for configuration"
2829
" files")
2830
parser.add_argument("--no-dbus", action="store_false",
2831
dest="use_dbus", help="Do not provide D-Bus"
2832
" system bus interface", default=None)
2833
parser.add_argument("--no-ipv6", action="store_false",
2834
dest="use_ipv6", help="Do not use IPv6",
2835
default=None)
2836
parser.add_argument("--no-restore", action="store_false",
2837
dest="restore", help="Do not restore stored"
2838
" state", default=None)
2839
parser.add_argument("--socket", type=int,
2840
help="Specify a file descriptor to a network"
2841
" socket to use instead of creating one")
2842
parser.add_argument("--statedir", metavar="DIR",
2843
help="Directory to save/restore state in")
2844
parser.add_argument("--foreground", action="store_true",
2845
help="Run in foreground", default=None)
2846
parser.add_argument("--no-zeroconf", action="store_false",
2847
dest="zeroconf", help="Do not use Zeroconf",
2848
default=None)
2849
2850
options = parser.parse_args()
2851
1674
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]
1703
2852
1704
if options.check:
2853
1705
import doctest
2854
fail_count, test_count = doctest.testmod()
2855
sys.exit(os.EX_OK if fail_count == 0 else 1)
2856
1706
doctest.testmod()
1707
sys.exit()
1708
2857
1709
# Default values for config file for server-global settings
2858
server_defaults = {"interface": "",
2859
"address": "",
2860
"port": "",
2861
"debug": "False",
2862
"priority":
2863
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2864
":+SIGN-DSA-SHA256",
2865
"servicename": "Mandos",
2866
"use_dbus": "True",
2867
"use_ipv6": "True",
2868
"debuglevel": "",
2869
"restore": "True",
2870
"socket": "",
2871
"statedir": "/var/lib/mandos",
2872
"foreground": "False",
2873
"zeroconf": "True",
2874
}
2875
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
}
1721
2876
1722
# Parse config file for server-global settings
2877
1723
server_config = configparser.SafeConfigParser(server_defaults)
2878
1724
del server_defaults
2879
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2880
1727
# Convert the SafeConfigParser object to a dict
2881
1728
server_settings = server_config.defaults()
2882
1729
# Use the appropriate methods on the non-string config options
2883
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2884
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",
2885
1732
option)
2886
1733
if server_settings["port"]:
2887
server_settings["port"] = server_config.getint("DEFAULT",
2888
"port")
2889
if server_settings["socket"]:
2890
server_settings["socket"] = server_config.getint("DEFAULT",
2891
"socket")
2892
# Later, stdin will, and stdout and stderr might, be dup'ed
2893
# over with an opened os.devnull. But we don't want this to
2894
# happen with a supplied network socket.
2895
if 0 <= server_settings["socket"] <= 2:
2896
server_settings["socket"] = os.dup(server_settings
2897
["socket"])
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2898
1736
del server_config
2899
1737
2900
1738
# Override the settings from the config file with command line
2901
1739
# options, if set.
2902
for option in ("interface", "address", "port", "debug",
2903
"priority", "servicename", "configdir", "use_dbus",
2904
"use_ipv6", "debuglevel", "restore", "statedir",
2905
"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"):
2906
1743
value = getattr(options, option)
2907
1744
if value is not None:
2908
1745
server_settings[option] = value
2909
1746
del options
2910
1747
# Force all strings to be unicode
2911
1748
for option in server_settings.keys():
2912
if isinstance(server_settings[option], bytes):
2913
server_settings[option] = (server_settings[option]
2914
.decode("utf-8"))
2915
# Force all boolean options to be boolean
2916
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2917
"foreground", "zeroconf"):
2918
server_settings[option] = bool(server_settings[option])
2919
# Debug implies foreground
2920
if server_settings["debug"]:
2921
server_settings["foreground"] = True
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2922
1751
# Now we have our good server settings in "server_settings"
2923
1752
2924
1753
##################################################################
2925
2926
if (not server_settings["zeroconf"]
2927
and not (server_settings["port"]
2928
or server_settings["socket"] != "")):
2929
parser.error("Needs port or socket to work without Zeroconf")
2930
1754
2931
1755
# For convenience
2932
debug = server_settings["debug"]
2933
debuglevel = server_settings["debuglevel"]
2934
use_dbus = server_settings["use_dbus"]
2935
use_ipv6 = server_settings["use_ipv6"]
2936
stored_state_path = os.path.join(server_settings["statedir"],
2937
stored_state_file)
2938
foreground = server_settings["foreground"]
2939
zeroconf = server_settings["zeroconf"]
2940
2941
if debug:
2942
initlogger(debug, logging.DEBUG)
2943
else:
2944
if not debuglevel:
2945
initlogger(debug)
2946
else:
2947
level = getattr(logging, debuglevel.upper())
2948
initlogger(debug, level)
2949
2950
if server_settings["servicename"] != "Mandos":
2951
syslogger.setFormatter(
2952
logging.Formatter('Mandos ({}) [%(process)d]:'
2953
' %(levelname)s: %(message)s'.format(
2954
server_settings["servicename"])))
2955
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"]))
1766
2956
1767
# Parse config file with clients
2957
client_config = configparser.SafeConfigParser(Client
2958
.client_defaults)
2959
client_config.read(os.path.join(server_settings["configdir"],
2960
"clients.conf"))
2961
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"))
1778
2962
1779
global mandos_dbus_service
2963
1780
mandos_dbus_service = None
2964
2965
socketfd = None
2966
if server_settings["socket"] != "":
2967
socketfd = server_settings["socket"]
2968
tcp_server = MandosServer(
2969
(server_settings["address"], server_settings["port"]),
2970
ClientHandler,
2971
interface=(server_settings["interface"] or None),
2972
use_ipv6=use_ipv6,
2973
gnutls_priority=server_settings["priority"],
2974
use_dbus=use_dbus,
2975
socketfd=socketfd)
2976
if not foreground:
2977
pidfilename = "/run/mandos.pid"
2978
if not os.path.isdir("/run/."):
2979
pidfilename = "/var/run/mandos.pid"
2980
pidfile = None
2981
try:
2982
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2983
except IOError as e:
2984
logger.error("Could not open file %r", pidfilename,
2985
exc_info=e)
2986
2987
for name, group in (("_mandos", "_mandos"),
2988
("mandos", "mandos"),
2989
("nobody", "nogroup")):
2990
try:
2991
uid = pwd.getpwnam(name).pw_uid
2992
gid = pwd.getpwnam(group).pw_gid
2993
break
1781
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"
1793
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
1797
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
1802
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2994
1805
except KeyError:
2995
continue
2996
else:
2997
uid = 65534
2998
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
2999
1812
try:
3000
1813
os.setgid(gid)
3001
1814
os.setuid(uid)
3002
if debug:
3003
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3004
gid))
3005
except OSError as error:
3006
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3007
.format(uid, gid, os.strerror(error.errno)))
3008
if error.errno != errno.EPERM:
3009
raise
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
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)
3010
1826
3011
1827
if debug:
3012
1828
# Enable all possible GnuTLS debugging
3013
1829
3014
1830
# "Use a log level over 10 to enable all debugging options."
3015
1831
# - GnuTLS manual
3016
gnutls.global_set_log_level(11)
3017
3018
@gnutls.log_func
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
1833
1834
@gnutls.library.types.gnutls_log_func
3019
1835
def debug_gnutls(level, string):
3020
logger.debug("GnuTLS: %s", string[:-1])
3021
3022
gnutls.global_set_log_function(debug_gnutls)
3023
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1837
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
1840
3024
1841
# Redirect stdin so all checkers get /dev/null
3025
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3026
1843
os.dup2(null, sys.stdin.fileno())
3027
1844
if null > 2:
3028
1845
os.close(null)
3029
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
3030
1850
# Need to fork before connecting to D-Bus
3031
if not foreground:
1851
if not debug:
3032
1852
# Close all input and output, do double fork, etc.
3033
1853
daemon()
3034
3035
# multiprocessing will use threads, so before we use GLib we need
3036
# to inform GLib that threads will be used.
3037
GLib.threads_init()
3038
1854
3039
1855
global main_loop
3040
1856
# From the Avahi example code
3041
DBusGMainLoop(set_as_default=True)
3042
main_loop = GLib.MainLoop()
1857
DBusGMainLoop(set_as_default=True )
1858
main_loop = gobject.MainLoop()
3043
1859
bus = dbus.SystemBus()
3044
1860
# End of Avahi example code
3045
1861
if use_dbus:
3046
1862
try:
3047
bus_name = dbus.service.BusName("se.recompile.Mandos",
3048
bus,
3049
do_not_queue=True)
3050
old_bus_name = dbus.service.BusName(
3051
"se.bsnet.fukt.Mandos", bus,
3052
do_not_queue=True)
3053
except dbus.exceptions.DBusException as e:
3054
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")
3055
1867
use_dbus = False
3056
server_settings["use_dbus"] = False
1868
server_settings[u"use_dbus"] = False
3057
1869
tcp_server.use_dbus = False
3058
if zeroconf:
3059
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3060
service = AvahiServiceToSyslog(
3061
name=server_settings["servicename"],
3062
servicetype="_mandos._tcp",
3063
protocol=protocol,
3064
bus=bus)
3065
if server_settings["interface"]:
3066
service.interface = if_nametoindex(
3067
server_settings["interface"].encode("utf-8"))
3068
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"])))
1877
3069
1878
global multiprocessing_manager
3070
1879
multiprocessing_manager = multiprocessing.Manager()
3071
1880
3072
1881
client_class = Client
3073
1882
if use_dbus:
3074
client_class = functools.partial(ClientDBus, bus=bus)
3075
3076
client_settings = Client.config_parser(client_config)
3077
old_client_settings = {}
3078
clients_data = {}
3079
3080
# This is used to redirect stdout and stderr for checker processes
3081
global wnull
3082
wnull = open(os.devnull, "w") # A writable /dev/null
3083
# Only used if server is running in foreground but not in debug
3084
# mode
3085
if debug or not foreground:
3086
wnull.close()
3087
3088
# Get client data and settings from last running state.
3089
if server_settings["restore"]:
3090
try:
3091
with open(stored_state_path, "rb") as stored_state:
3092
if sys.version_info.major == 2:
3093
clients_data, old_client_settings = pickle.load(
3094
stored_state)
3095
else:
3096
bytes_clients_data, bytes_old_client_settings = (
3097
pickle.load(stored_state, encoding="bytes"))
3098
# Fix bytes to strings
3099
# clients_data
3100
# .keys()
3101
clients_data = {(key.decode("utf-8")
3102
if isinstance(key, bytes)
3103
else key): value
3104
for key, value in
3105
bytes_clients_data.items()}
3106
del bytes_clients_data
3107
for key in clients_data:
3108
value = {(k.decode("utf-8")
3109
if isinstance(k, bytes) else k): v
3110
for k, v in
3111
clients_data[key].items()}
3112
clients_data[key] = value
3113
# .client_structure
3114
value["client_structure"] = [
3115
(s.decode("utf-8")
3116
if isinstance(s, bytes)
3117
else s) for s in
3118
value["client_structure"]]
3119
# .name & .host
3120
for k in ("name", "host"):
3121
if isinstance(value[k], bytes):
3122
value[k] = value[k].decode("utf-8")
3123
# old_client_settings
3124
# .keys()
3125
old_client_settings = {
3126
(key.decode("utf-8")
3127
if isinstance(key, bytes)
3128
else key): value
3129
for key, value in
3130
bytes_old_client_settings.items()}
3131
del bytes_old_client_settings
3132
# .host
3133
for value in old_client_settings.values():
3134
if isinstance(value["host"], bytes):
3135
value["host"] = (value["host"]
3136
.decode("utf-8"))
3137
os.remove(stored_state_path)
3138
except IOError as e:
3139
if e.errno == errno.ENOENT:
3140
logger.warning("Could not load persistent state:"
3141
" {}".format(os.strerror(e.errno)))
3142
else:
3143
logger.critical("Could not load persistent state:",
3144
exc_info=e)
3145
raise
3146
except EOFError as e:
3147
logger.warning("Could not load persistent state: "
3148
"EOFError:",
3149
exc_info=e)
3150
3151
with PGPEngine() as pgp:
3152
for client_name, client in clients_data.items():
3153
# Skip removed clients
3154
if client_name not in client_settings:
3155
continue
3156
3157
# Decide which value to use after restoring saved state.
3158
# We have three different values: Old config file,
3159
# new config file, and saved state.
3160
# New config value takes precedence if it differs from old
3161
# config value, otherwise use saved state.
3162
for name, value in client_settings[client_name].items():
3163
try:
3164
# For each value in new config, check if it
3165
# differs from the old config value (Except for
3166
# the "secret" attribute)
3167
if (name != "secret"
3168
and (value !=
3169
old_client_settings[client_name][name])):
3170
client[name] = value
3171
except KeyError:
3172
pass
3173
3174
# Clients who has passed its expire date can still be
3175
# enabled if its last checker was successful. A Client
3176
# whose checker succeeded before we stored its state is
3177
# assumed to have successfully run all checkers during
3178
# downtime.
3179
if client["enabled"]:
3180
if datetime.datetime.utcnow() >= client["expires"]:
3181
if not client["last_checked_ok"]:
3182
logger.warning(
3183
"disabling client {} - Client never "
3184
"performed a successful checker".format(
3185
client_name))
3186
client["enabled"] = False
3187
elif client["last_checker_status"] != 0:
3188
logger.warning(
3189
"disabling client {} - Client last"
3190
" checker failed with error code"
3191
" {}".format(
3192
client_name,
3193
client["last_checker_status"]))
3194
client["enabled"] = False
3195
else:
3196
client["expires"] = (
3197
datetime.datetime.utcnow()
3198
+ client["timeout"])
3199
logger.debug("Last checker succeeded,"
3200
" keeping {} enabled".format(
3201
client_name))
1883
client_class = functools.partial(ClientDBus, bus = bus)
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):
3202
1891
try:
3203
client["secret"] = pgp.decrypt(
3204
client["encrypted_secret"],
3205
client_settings[client_name]["secret"])
3206
except PGPError:
3207
# If decryption fails, we use secret from new settings
3208
logger.debug("Failed to decrypt {} old secret".format(
3209
client_name))
3210
client["secret"] = (client_settings[client_name]
3211
["secret"])
3212
3213
# Add/remove clients based on new changes made to config
3214
for client_name in (set(old_client_settings)
3215
- set(client_settings)):
3216
del clients_data[client_name]
3217
for client_name in (set(client_settings)
3218
- set(old_client_settings)):
3219
clients_data[client_name] = client_settings[client_name]
3220
3221
# Create all client objects
3222
for client_name, client in clients_data.items():
3223
tcp_server.clients[client_name] = client_class(
3224
name=client_name,
3225
settings=client,
3226
server_settings=server_settings)
3227
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()))
3228
1901
if not tcp_server.clients:
3229
logger.warning("No clients defined")
3230
3231
if not foreground:
3232
if pidfile is not None:
3233
pid = os.getpid()
3234
try:
3235
with pidfile:
3236
print(pid, file=pidfile)
3237
except IOError:
3238
logger.error("Could not write to file %r with PID %d",
3239
pidfilename, pid)
3240
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
3241
1916
del pidfilename
3242
3243
for termsig in (signal.SIGHUP, signal.SIGTERM):
3244
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3245
lambda: main_loop.quit() and False)
3246
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())
1922
3247
1923
if use_dbus:
3248
3249
@alternate_dbus_interfaces(
3250
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3251
class MandosDBusService(DBusObjectWithObjectManager):
1924
class MandosDBusService(dbus.service.Object):
3252
1925
"""A D-Bus proxy object"""
3253
3254
1926
def __init__(self):
3255
dbus.service.Object.__init__(self, bus, "/")
3256
3257
_interface = "se.recompile.Mandos"
3258
3259
@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")
3260
1931
def ClientAdded(self, objpath):
3261
1932
"D-Bus signal"
3262
1933
pass
3263
3264
@dbus.service.signal(_interface, signature="ss")
1934
1935
@dbus.service.signal(_interface, signature=u"ss")
3265
1936
def ClientNotFound(self, fingerprint, address):
3266
1937
"D-Bus signal"
3267
1938
pass
3268
3269
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3270
"true"})
3271
@dbus.service.signal(_interface, signature="os")
1939
1940
@dbus.service.signal(_interface, signature=u"os")
3272
1941
def ClientRemoved(self, objpath, name):
3273
1942
"D-Bus signal"
3274
1943
pass
3275
3276
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3277
"true"})
3278
@dbus.service.method(_interface, out_signature="ao")
1944
1945
@dbus.service.method(_interface, out_signature=u"ao")
3279
1946
def GetAllClients(self):
3280
1947
"D-Bus method"
3281
return dbus.Array(c.dbus_object_path for c in
3282
tcp_server.clients.values())
3283
3284
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3285
"true"})
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
1950
3286
1951
@dbus.service.method(_interface,
3287
out_signature="a{oa{sv}}")
1952
out_signature=u"a{oa{sv}}")
3288
1953
def GetAllClientsWithProperties(self):
3289
1954
"D-Bus method"
3290
1955
return dbus.Dictionary(
3291
{c.dbus_object_path: c.GetAll(
3292
"se.recompile.Mandos.Client")
3293
for c in tcp_server.clients.values()},
3294
signature="oa{sv}")
3295
3296
@dbus.service.method(_interface, in_signature="o")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1959
1960
@dbus.service.method(_interface, in_signature=u"o")
3297
1961
def RemoveClient(self, object_path):
3298
1962
"D-Bus method"
3299
for c in tcp_server.clients.values():
1963
for c in tcp_server.clients:
3300
1964
if c.dbus_object_path == object_path:
3301
del tcp_server.clients[c.name]
1965
tcp_server.clients.remove(c)
3302
1966
c.remove_from_connection()
3303
# Don't signal the disabling
1967
# Don't signal anything except ClientRemoved
3304
1968
c.disable(quiet=True)
3305
# Emit D-Bus signal for removal
3306
self.client_removed_signal(c)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
3307
1971
return
3308
1972
raise KeyError(object_path)
3309
1973
3310
1974
del _interface
3311
3312
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3313
out_signature="a{oa{sa{sv}}}")
3314
def GetManagedObjects(self):
3315
"""D-Bus method"""
3316
return dbus.Dictionary(
3317
{client.dbus_object_path:
3318
dbus.Dictionary(
3319
{interface: client.GetAll(interface)
3320
for interface in
3321
client._get_all_interface_names()})
3322
for client in tcp_server.clients.values()})
3323
3324
def client_added_signal(self, client):
3325
"""Send the new standard signal and the old signal"""
3326
if use_dbus:
3327
# New standard signal
3328
self.InterfacesAdded(
3329
client.dbus_object_path,
3330
dbus.Dictionary(
3331
{interface: client.GetAll(interface)
3332
for interface in
3333
client._get_all_interface_names()}))
3334
# Old signal
3335
self.ClientAdded(client.dbus_object_path)
3336
3337
def client_removed_signal(self, client):
3338
"""Send the new standard signal and the old signal"""
3339
if use_dbus:
3340
# New standard signal
3341
self.InterfacesRemoved(
3342
client.dbus_object_path,
3343
client._get_all_interface_names())
3344
# Old signal
3345
self.ClientRemoved(client.dbus_object_path,
3346
client.name)
3347
1975
3348
1976
mandos_dbus_service = MandosDBusService()
3349
3350
# Save modules to variables to exempt the modules from being
3351
# unloaded before the function registered with atexit() is run.
3352
mp = multiprocessing
3353
wn = wnull
3354
1977
3355
1978
def cleanup():
3356
1979
"Cleanup function; run on exit"
3357
if zeroconf:
3358
service.cleanup()
3359
3360
mp.active_children()
3361
wn.close()
3362
if not (tcp_server.clients or client_settings):
3363
return
3364
3365
# Store client before exiting. Secrets are encrypted with key
3366
# based on what config file has. If config file is
3367
# removed/edited, old secret will thus be unrecovable.
3368
clients = {}
3369
with PGPEngine() as pgp:
3370
for client in tcp_server.clients.values():
3371
key = client_settings[client.name]["secret"]
3372
client.encrypted_secret = pgp.encrypt(client.secret,
3373
key)
3374
client_dict = {}
3375
3376
# A list of attributes that can not be pickled
3377
# + secret.
3378
exclude = {"bus", "changedstate", "secret",
3379
"checker", "server_settings"}
3380
for name, typ in inspect.getmembers(dbus.service
3381
.Object):
3382
exclude.add(name)
3383
3384
client_dict["encrypted_secret"] = (client
3385
.encrypted_secret)
3386
for attr in client.client_structure:
3387
if attr not in exclude:
3388
client_dict[attr] = getattr(client, attr)
3389
3390
clients[client.name] = client_dict
3391
del client_settings[client.name]["secret"]
3392
3393
try:
3394
with tempfile.NamedTemporaryFile(
3395
mode='wb',
3396
suffix=".pickle",
3397
prefix='clients-',
3398
dir=os.path.dirname(stored_state_path),
3399
delete=False) as stored_state:
3400
pickle.dump((clients, client_settings), stored_state,
3401
protocol=2)
3402
tempname = stored_state.name
3403
os.rename(tempname, stored_state_path)
3404
except (IOError, OSError) as e:
3405
if not debug:
3406
try:
3407
os.remove(tempname)
3408
except NameError:
3409
pass
3410
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3411
logger.warning("Could not save persistent state: {}"
3412
.format(os.strerror(e.errno)))
3413
else:
3414
logger.warning("Could not save persistent state:",
3415
exc_info=e)
3416
raise
3417
3418
# Delete all clients, and settings from config
1980
service.cleanup()
1981
3419
1982
while tcp_server.clients:
3420
name, client = tcp_server.clients.popitem()
1983
client = tcp_server.clients.pop()
3421
1984
if use_dbus:
3422
1985
client.remove_from_connection()
3423
# Don't signal the disabling
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3424
1988
client.disable(quiet=True)
3425
# Emit D-Bus signal for removal
3426
1989
if use_dbus:
3427
mandos_dbus_service.client_removed_signal(client)
3428
client_settings.clear()
3429
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
1993
3430
1994
atexit.register(cleanup)
3431
3432
for client in tcp_server.clients.values():
1995
1996
for client in tcp_server.clients:
3433
1997
if use_dbus:
3434
# Emit D-Bus signal for adding
3435
mandos_dbus_service.client_added_signal(client)
3436
# Need to initiate checking of clients
3437
if client.enabled:
3438
client.init_checker()
3439
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2001
3440
2002
tcp_server.enable()
3441
2003
tcp_server.server_activate()
3442
2004
3443
2005
# Find out what port we got
3444
if zeroconf:
3445
service.port = tcp_server.socket.getsockname()[1]
2006
service.port = tcp_server.socket.getsockname()[1]
3446
2007
if use_ipv6:
3447
logger.info("Now listening on address %r, port %d,"
3448
" flowinfo %d, scope_id %d",
3449
*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())
3450
2011
else: # IPv4
3451
logger.info("Now listening on address %r, port %d",
3452
*tcp_server.socket.getsockname())
3453
3454
# service.interface = tcp_server.socket.getsockname()[3]
3455
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2014
2015
#service.interface = tcp_server.socket.getsockname()[3]
2016
3456
2017
try:
3457
if zeroconf:
3458
# From the Avahi example code
3459
try:
3460
service.activate()
3461
except dbus.exceptions.DBusException as error:
3462
logger.critical("D-Bus Exception", exc_info=error)
3463
cleanup()
3464
sys.exit(1)
3465
# End of Avahi example code
3466
3467
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3468
lambda *args, **kwargs:
3469
(tcp_server.handle_request
3470
(*args[2:], **kwargs) or True))
3471
3472
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")
3473
2033
main_loop.run()
3474
except AvahiError as error:
3475
logger.critical("Avahi Error", exc_info=error)
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3476
2036
cleanup()
3477
2037
sys.exit(1)
3478
2038
except KeyboardInterrupt:
3479
2039
if debug:
3480
print("", file=sys.stderr)
3481
logger.debug("Server received KeyboardInterrupt")
3482
logger.debug("Server exiting")
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3483
2043
# Must run before the D-Bus bus name gets deregistered
3484
2044
cleanup()
3485
2045
3486
3487
2046
if __name__ == '__main__':
3488
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0