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- Committer: Teddy Hogeborn
- Date: 2019-02-13 08:45:09 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 382.
- Revision ID: teddy@recompile.se-20190213084509-bb2uu006vip11v7l
Remove modification of debian/control file
* debian/rules (override_dh_shlibdeps-arch): Commented out.
* debian/rules (override_dh_shlibdeps-arch): Commented out.
- files added:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- 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
#
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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
#
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13
# Everything else is
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
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# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
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# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
68
80
69
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import dbus
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import dbus.service
71
import gobject
72
import avahi
83
from gi.repository import GLib
73
84
from dbus.mainloop.glib import DBusGMainLoop
74
85
import ctypes
75
86
import ctypes.util
76
87
import xml.dom.minidom
77
88
import inspect
78
import GnuPGInterface
79
89
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# Try to find the value of SO_BINDTODEVICE:
80
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
81
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
95
except AttributeError:
83
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
84
99
from IN import SO_BINDTODEVICE
85
100
except ImportError:
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.3"
90
119
stored_state_file = "clients.pickle"
91
120
92
121
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
122
syslogger = None
96
123
97
124
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
101
127
except (OSError, AttributeError):
128
102
129
def if_nametoindex(interface):
103
130
"Get an interface index the hard way, i.e. using fcntl()"
104
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
132
with contextlib.closing(socket.socket()) as s:
106
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
136
return interface_index
112
137
113
138
114
def initlogger(level=logging.WARNING):
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
116
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
117
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syslogger.setFormatter(logging.Formatter
118
163
('Mandos [%(process)d]: %(levelname)s:'
119
164
' %(message)s'))
120
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
128
174
logger.setLevel(level)
129
175
130
176
131
class CryptoError(Exception):
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
132
179
pass
133
180
134
181
135
class Crypto(object):
182
class PGPEngine(object):
136
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
137
185
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
146
206
def __enter__(self):
147
207
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
208
209
def __exit__(self, exc_type, exc_value, traceback):
150
210
self._cleanup()
151
211
return False
152
212
153
213
def __del__(self):
154
214
self._cleanup()
155
215
156
216
def _cleanup(self):
157
217
if self.tempdir is not None:
158
218
# Delete contents of tempdir
159
219
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
220
topdown=False):
161
221
for filename in files:
162
222
os.remove(os.path.join(root, filename))
163
223
for dirname in dirs:
165
225
# Remove tempdir
166
226
os.rmdir(self.tempdir)
167
227
self.tempdir = None
168
228
169
229
def password_encode(self, password):
170
230
# Passphrase can not be empty and can not contain newlines or
171
231
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
174
240
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
self.gnupg.passphrase = None
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
189
256
return ciphertext
190
257
191
258
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
self.gnupg.passphrase = None
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
206
274
return decrypted_plaintext
207
275
208
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
209
303
210
304
class AvahiError(Exception):
211
305
def __init__(self, value, *args, **kwargs):
212
306
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
216
310
217
311
class AvahiServiceError(AvahiError):
218
312
pass
219
313
314
220
315
class AvahiGroupError(AvahiError):
221
316
pass
222
317
223
318
224
319
class AvahiService(object):
225
320
"""An Avahi (Zeroconf) service.
226
321
227
322
Attributes:
228
323
interface: integer; avahi.IF_UNSPEC or an interface index.
229
324
Used to optionally bind to the specified interface.
230
325
name: string; Example: 'Mandos'
231
326
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
327
See <https://www.iana.org/assignments/service-names-port-numbers>
233
328
port: integer; what port to announce
234
329
TXT: list of strings; TXT record for the service
235
330
domain: string; Domain to publish on, default to .local if empty.
241
336
server: D-Bus Server
242
337
bus: dbus.SystemBus()
243
338
"""
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
248
351
self.interface = interface
249
352
self.name = name
250
353
self.type = servicetype
259
362
self.server = None
260
363
self.bus = bus
261
364
self.entry_group_state_changed_match = None
262
def rename(self):
365
366
def rename(self, remove=True):
263
367
"""Derived from the Avahi example code"""
264
368
if self.rename_count >= self.max_renames:
265
369
logger.critical("No suitable Zeroconf service name found"
266
370
" after %i retries, exiting.",
267
371
self.rename_count)
268
372
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
271
376
logger.info("Changing Zeroconf service name to %r ...",
272
377
self.name)
273
self.remove()
378
if remove:
379
self.remove()
274
380
try:
275
381
self.add()
276
382
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
281
392
def remove(self):
282
393
"""Derived from the Avahi example code"""
283
394
if self.entry_group_state_changed_match is not None:
285
396
self.entry_group_state_changed_match = None
286
397
if self.group is not None:
287
398
self.group.Reset()
399
288
400
def add(self):
289
401
"""Derived from the Avahi example code"""
290
402
self.remove()
307
419
dbus.UInt16(self.port),
308
420
avahi.string_array_to_txt_array(self.TXT))
309
421
self.group.Commit()
422
310
423
def entry_group_state_changed(self, state, error):
311
424
"""Derived from the Avahi example code"""
312
425
logger.debug("Avahi entry group state change: %i", state)
313
426
314
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
428
logger.debug("Zeroconf service established.")
316
429
elif state == avahi.ENTRY_GROUP_COLLISION:
318
431
self.rename()
319
432
elif state == avahi.ENTRY_GROUP_FAILURE:
320
433
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
324
437
def cleanup(self):
325
438
"""Derived from the Avahi example code"""
326
439
if self.group is not None:
331
444
pass
332
445
self.group = None
333
446
self.remove()
447
334
448
def server_state_changed(self, state, error=None):
335
449
"""Derived from the Avahi example code"""
336
450
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
344
457
if state in bad_states:
345
458
if bad_states[state] is not None:
346
459
if error is None:
349
462
logger.error(bad_states[state] + ": %r", error)
350
463
self.cleanup()
351
464
elif state == avahi.SERVER_RUNNING:
352
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
353
477
else:
354
478
if error is None:
355
479
logger.debug("Unknown state: %r", state)
356
480
else:
357
481
logger.debug("Unknown state: %r: %r", state, error)
482
358
483
def activate(self):
359
484
"""Derived from the Avahi example code"""
360
485
if self.server is None:
364
489
follow_name_owner_changes=True),
365
490
avahi.DBUS_INTERFACE_SERVER)
366
491
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
492
self.server_state_changed)
368
493
self.server_state_changed(self.server.GetState())
369
494
495
370
496
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
497
def rename(self, *args, **kwargs):
372
498
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
378
503
return ret
379
504
380
def _timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
386
828
class Client(object):
387
829
"""A representation of a client host served by this server.
388
830
389
831
Attributes:
390
_approved: bool(); 'None' if not yet approved/disapproved
832
approved: bool(); 'None' if not yet approved/disapproved
391
833
approval_delay: datetime.timedelta(); Time to wait for approval
392
834
approval_duration: datetime.timedelta(); Duration of one approval
393
835
checker: subprocess.Popen(); a running checker process used
394
836
to see if the client lives.
395
837
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
838
checker_callback_tag: a GLib event source tag, or None
397
839
checker_command: string; External command which is run to check
398
840
if client lives. %() expansions are done at
399
841
runtime with vars(self) as dict, so that for
400
842
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
843
checker_initiator_tag: a GLib event source tag, or None
402
844
created: datetime.datetime(); (UTC) object creation
403
845
client_structure: Object describing what attributes a client has
404
846
and is used for storing the client at exit
405
847
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
848
disable_initiator_tag: a GLib event source tag, or None
407
849
enabled: bool()
408
850
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
410
854
host: string; available for use by the checker command
411
855
interval: datetime.timedelta(); How often to start a new checker
412
856
last_approval_request: datetime.datetime(); (UTC) or None
413
857
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
858
last_checker_status: integer between 0 and 255 reflecting exit
416
859
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC)
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
419
864
name: string; from the config file, used in log messages and
420
865
D-Bus identifiers
421
866
secret: bytestring; sent verbatim (over TLS) to client
422
867
timeout: datetime.timedelta(); How long from last_checked_ok
423
868
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
869
extended_timeout: extra long timeout when secret has been sent
425
870
runtime_expansions: Allowed attributes for runtime expansion.
426
871
expires: datetime.datetime(); time (UTC) when a client will be
427
872
disabled, or None
873
server_settings: The server_settings dict from main()
428
874
"""
429
875
430
876
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
433
880
"last_enabled", "name", "timeout")
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
454
948
self.name = name
455
if config is None:
456
config = {}
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
457
966
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
967
logger.debug(" Key ID: %s", self.key_id)
463
968
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = True
477
self.last_approval_request = None
478
self.last_enabled = datetime.datetime.utcnow()
479
self.last_checked_ok = None
480
self.last_checker_status = None
481
self.timeout = string_to_delta(config["timeout"])
482
self.extended_timeout = string_to_delta(config
483
["extended_timeout"])
484
self.interval = string_to_delta(config["interval"])
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
485
973
self.checker = None
486
974
self.checker_initiator_tag = None
487
975
self.disable_initiator_tag = None
488
self.expires = datetime.datetime.utcnow() + self.timeout
489
976
self.checker_callback_tag = None
490
self.checker_command = config["checker"]
491
977
self.current_checker_command = None
492
self._approved = None
493
self.approved_by_default = config.get("approved_by_default",
494
True)
978
self.approved = None
495
979
self.approvals_pending = 0
496
self.approval_delay = string_to_delta(
497
config["approval_delay"])
498
self.approval_duration = string_to_delta(
499
config["approval_duration"])
500
self.changedstate = (multiprocessing_manager
501
.Condition(multiprocessing_manager
502
.Lock()))
503
self.client_structure = [attr for attr in
504
self.__dict__.iterkeys()
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
505
984
if not attr.startswith("_")]
506
985
self.client_structure.append("client_structure")
507
508
for name, t in inspect.getmembers(type(self),
509
lambda obj:
510
isinstance(obj,
511
property)):
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
512
989
if not name.startswith("_"):
513
990
self.client_structure.append(name)
514
991
515
992
# Send notice to process children that client state has changed
516
993
def send_changedstate(self):
517
994
with self.changedstate:
518
995
self.changedstate.notify_all()
519
996
520
997
def enable(self):
521
998
"""Start this client's checker and timeout hooks"""
522
999
if getattr(self, "enabled", False):
523
1000
# Already enabled
524
1001
return
525
self.send_changedstate()
526
1002
self.expires = datetime.datetime.utcnow() + self.timeout
527
1003
self.enabled = True
528
1004
self.last_enabled = datetime.datetime.utcnow()
529
1005
self.init_checker()
530
1006
self.send_changedstate()
1007
531
1008
def disable(self, quiet=True):
532
1009
"""Disable this client."""
533
1010
if not getattr(self, "enabled", False):
534
1011
return False
535
1012
if not quiet:
536
self.send_changedstate()
537
if not quiet:
538
1013
logger.info("Disabling client %s", self.name)
539
if getattr(self, "disable_initiator_tag", False):
540
gobject.source_remove(self.disable_initiator_tag)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
541
1016
self.disable_initiator_tag = None
542
1017
self.expires = None
543
if getattr(self, "checker_initiator_tag", False):
544
gobject.source_remove(self.checker_initiator_tag)
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
545
1020
self.checker_initiator_tag = None
546
1021
self.stop_checker()
547
1022
self.enabled = False
548
# Do not run this again if called by a gobject.timeout_add
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
549
1026
return False
550
1027
551
1028
def __del__(self):
552
1029
self.disable()
553
1030
554
1031
def init_checker(self):
555
1032
# Schedule a new checker to be started an 'interval' from now,
556
1033
# and every interval from then on.
557
self.checker_initiator_tag = (gobject.timeout_add
558
(self.interval_milliseconds(),
559
self.start_checker))
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
560
1039
# Schedule a disable() when 'timeout' has passed
561
self.disable_initiator_tag = (gobject.timeout_add
562
(self.timeout_milliseconds(),
563
self.disable))
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
564
1044
# Also start a new checker *right now*.
565
1045
self.start_checker()
566
567
def checker_callback(self, pid, condition, command):
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
568
1049
"""The checker has completed, so take appropriate actions."""
569
1050
self.checker_callback_tag = None
570
1051
self.checker = None
571
if os.WIFEXITED(condition):
572
self.last_checker_status = os.WEXITSTATUS(condition)
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
573
1059
if self.last_checker_status == 0:
574
1060
logger.info("Checker for %(name)s succeeded",
575
1061
vars(self))
576
1062
self.checked_ok()
577
1063
else:
578
logger.info("Checker for %(name)s failed",
579
vars(self))
1064
logger.info("Checker for %(name)s failed", vars(self))
580
1065
else:
581
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
582
1068
logger.warning("Checker for %(name)s crashed?",
583
1069
vars(self))
584
585
def checked_ok(self, timeout=None):
586
"""Bump up the timeout for this client.
587
588
This should only be called when the client has been seen,
589
alive and well.
590
"""
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
591
1081
if timeout is None:
592
1082
timeout = self.timeout
593
self.last_checked_ok = datetime.datetime.utcnow()
594
1083
if self.disable_initiator_tag is not None:
595
gobject.source_remove(self.disable_initiator_tag)
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
596
1086
if getattr(self, "enabled", False):
597
self.disable_initiator_tag = (gobject.timeout_add
598
(_timedelta_to_milliseconds
599
(timeout), self.disable))
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
600
1089
self.expires = datetime.datetime.utcnow() + timeout
601
1090
602
1091
def need_approval(self):
603
1092
self.last_approval_request = datetime.datetime.utcnow()
604
1093
605
1094
def start_checker(self):
606
1095
"""Start a new checker subprocess if one is not running.
607
1096
608
1097
If a checker already exists, leave it running and do
609
1098
nothing."""
610
1099
# The reason for not killing a running checker is that if we
611
# did that, then if a checker (for some reason) started
612
# running slowly and taking more than 'interval' time, the
613
# client would inevitably timeout, since no checker would get
614
# a chance to run to completion. If we instead leave running
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
615
1104
# checkers alone, the checker would have to take more time
616
1105
# than 'timeout' for the client to be disabled, which is as it
617
1106
# should be.
618
619
# If a checker exists, make sure it is not a zombie
620
try:
621
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
622
except (AttributeError, OSError) as error:
623
if (isinstance(error, OSError)
624
and error.errno != errno.ECHILD):
625
raise error
626
else:
627
if pid:
628
logger.warning("Checker was a zombie")
629
gobject.source_remove(self.checker_callback_tag)
630
self.checker_callback(pid, status,
631
self.current_checker_command)
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
632
1112
# Start a new checker if needed
633
1113
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
634
1118
try:
635
# In case checker_command has exactly one % operator
636
command = self.checker_command % self.host
637
except TypeError:
638
# Escape attributes for the shell
639
escaped_attrs = dict(
640
(attr,
641
re.escape(unicode(str(getattr(self, attr, "")),
642
errors=
643
'replace')))
644
for attr in
645
self.runtime_expansions)
646
647
try:
648
command = self.checker_command % escaped_attrs
649
except TypeError as error:
650
logger.error('Could not format string "%s":'
651
' %s', self.checker_command, error)
652
return True # Try again later
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
653
1125
self.current_checker_command = command
654
try:
655
logger.info("Starting checker %r for %s",
656
command, self.name)
657
# We don't need to redirect stdout and stderr, since
658
# in normal mode, that is already done by daemon(),
659
# and in debug mode we don't want to. (Stdin is
660
# always replaced by /dev/null.)
661
self.checker = subprocess.Popen(command,
662
close_fds=True,
663
shell=True, cwd="/")
664
self.checker_callback_tag = (gobject.child_watch_add
665
(self.checker.pid,
666
self.checker_callback,
667
data=command))
668
# The checker may have completed before the gobject
669
# watch was added. Check for this.
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
if pid:
672
gobject.source_remove(self.checker_callback_tag)
673
self.checker_callback(pid, status, command)
674
except OSError as error:
675
logger.error("Failed to start subprocess: %s",
676
error)
677
# Re-run this periodically if run by gobject.timeout_add
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
678
1152
return True
679
1153
680
1154
def stop_checker(self):
681
1155
"""Force the checker process, if any, to stop."""
682
1156
if self.checker_callback_tag:
683
gobject.source_remove(self.checker_callback_tag)
1157
GLib.source_remove(self.checker_callback_tag)
684
1158
self.checker_callback_tag = None
685
1159
if getattr(self, "checker", None) is None:
686
1160
return
687
1161
logger.debug("Stopping checker for %(name)s", vars(self))
688
try:
689
os.kill(self.checker.pid, signal.SIGTERM)
690
#time.sleep(0.5)
691
#if self.checker.poll() is None:
692
# os.kill(self.checker.pid, signal.SIGKILL)
693
except OSError as error:
694
if error.errno != errno.ESRCH: # No such process
695
raise
1162
self.checker.terminate()
696
1163
self.checker = None
697
1164
698
1165
699
def dbus_service_property(dbus_interface, signature="v",
700
access="readwrite", byte_arrays=False):
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
701
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
702
1171
become properties on the D-Bus.
703
1172
704
1173
The decorated method will be called with no arguments by "Get"
705
1174
and with one argument by "Set".
706
1175
707
1176
The parameters, where they are supported, are the same as
708
1177
dbus.service.method, except there is only "signature", since the
709
1178
type from Get() and the type sent to Set() is the same.
712
1181
# "Set" method, so we fail early here:
713
1182
if byte_arrays and signature != "ay":
714
1183
raise ValueError("Byte arrays not supported for non-'ay'"
715
" signature %r" % signature)
1184
" signature {!r}".format(signature))
1185
716
1186
def decorator(func):
717
1187
func._dbus_is_property = True
718
1188
func._dbus_interface = dbus_interface
721
1191
func._dbus_name = func.__name__
722
1192
if func._dbus_name.endswith("_dbus_property"):
723
1193
func._dbus_name = func._dbus_name[:-14]
724
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
725
return func
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
726
1240
return decorator
727
1241
728
1242
729
1243
class DBusPropertyException(dbus.exceptions.DBusException):
730
1244
"""A base class for D-Bus property-related exceptions
731
1245
"""
732
def __unicode__(self):
733
return unicode(str(self))
1246
pass
734
1247
735
1248
736
1249
class DBusPropertyAccessException(DBusPropertyException):
745
1258
pass
746
1259
747
1260
748
class DBusObjectWithProperties(dbus.service.Object):
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
749
1351
"""A D-Bus object with properties.
750
1352
751
1353
Classes inheriting from this can use the dbus_service_property
752
1354
decorator to expose methods as D-Bus properties. It exposes the
753
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
754
1356
"""
755
756
@staticmethod
757
def _is_dbus_property(obj):
758
return getattr(obj, "_dbus_is_property", False)
759
760
def _get_all_dbus_properties(self):
761
"""Returns a generator of (name, attribute) pairs
762
"""
763
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
764
for cls in self.__class__.__mro__
765
for name, prop in
766
inspect.getmembers(cls, self._is_dbus_property))
767
1357
768
1358
def _get_dbus_property(self, interface_name, property_name):
769
1359
"""Returns a bound method if one exists which is a D-Bus
770
1360
property with the specified name and interface.
771
1361
"""
772
for cls in self.__class__.__mro__:
773
for name, value in (inspect.getmembers
774
(cls, self._is_dbus_property)):
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
775
1365
if (value._dbus_name == property_name
776
1366
and value._dbus_interface == interface_name):
777
1367
return value.__get__(self)
778
1368
779
1369
# No such property
780
raise DBusPropertyNotFound(self.dbus_object_path + ":"
781
+ interface_name + "."
782
+ property_name)
783
784
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
785
1384
out_signature="v")
786
1385
def Get(self, interface_name, property_name):
787
1386
"""Standard D-Bus property Get() method, see D-Bus standard.
793
1392
if not hasattr(value, "variant_level"):
794
1393
return value
795
1394
return type(value)(value, variant_level=value.variant_level+1)
796
1395
797
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
798
1397
def Set(self, interface_name, property_name, value):
799
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
805
1404
# The byte_arrays option is not supported yet on
806
1405
# signatures other than "ay".
807
1406
if prop._dbus_signature != "ay":
808
raise ValueError
809
value = dbus.ByteArray(''.join(unichr(byte)
810
for byte in value))
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
811
1412
prop(value)
812
813
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
814
1416
out_signature="a{sv}")
815
1417
def GetAll(self, interface_name):
816
1418
"""Standard D-Bus property GetAll() method, see D-Bus
817
1419
standard.
818
1420
819
1421
Note: Will not include properties with access="write".
820
1422
"""
821
1423
properties = {}
822
for name, prop in self._get_all_dbus_properties():
1424
for name, prop in self._get_all_dbus_things("property"):
823
1425
if (interface_name
824
1426
and interface_name != prop._dbus_interface):
825
1427
# Interface non-empty but did not match
831
1433
if not hasattr(value, "variant_level"):
832
1434
properties[name] = value
833
1435
continue
834
properties[name] = type(value)(value, variant_level=
835
value.variant_level+1)
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
836
1438
return dbus.Dictionary(properties, signature="sv")
837
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
838
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
839
1449
out_signature="s",
840
1450
path_keyword='object_path',
841
1451
connection_keyword='connection')
842
1452
def Introspect(self, object_path, connection):
843
"""Standard D-Bus method, overloaded to insert property tags.
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
844
1456
"""
845
xmlstring = dbus.service.Object.Introspect(self, object_path,
846
connection)
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
847
1460
try:
848
1461
document = xml.dom.minidom.parseString(xmlstring)
1462
849
1463
def make_tag(document, name, prop):
850
1464
e = document.createElement("property")
851
1465
e.setAttribute("name", name)
852
1466
e.setAttribute("type", prop._dbus_signature)
853
1467
e.setAttribute("access", prop._dbus_access)
854
1468
return e
1469
855
1470
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
856
1472
for tag in (make_tag(document, name, prop)
857
1473
for name, prop
858
in self._get_all_dbus_properties()
1474
in self._get_all_dbus_things("property")
859
1475
if prop._dbus_interface
860
1476
== if_tag.getAttribute("name")):
861
1477
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
862
1494
# Add the names to the return values for the
863
1495
# "org.freedesktop.DBus.Properties" methods
864
1496
if (if_tag.getAttribute("name")
879
1511
except (AttributeError, xml.dom.DOMException,
880
1512
xml.parsers.expat.ExpatError) as error:
881
1513
logger.error("Failed to override Introspection method",
882
error)
883
return xmlstring
884
885
886
def datetime_to_dbus (dt, variant_level=0):
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
887
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
888
1591
if dt is None:
889
return dbus.String("", variant_level = variant_level)
890
return dbus.String(dt.isoformat(),
891
variant_level=variant_level)
892
893
894
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
895
.__metaclass__):
896
"""Applied to an empty subclass of a D-Bus object, this metaclass
897
will add additional D-Bus attributes matching a certain pattern.
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
898
1618
"""
899
def __new__(mcs, name, bases, attr):
900
# Go through all the base classes which could have D-Bus
901
# methods, signals, or properties in them
902
for base in (b for b in bases
903
if issubclass(b, dbus.service.Object)):
904
# Go though all attributes of the base class
905
for attrname, attribute in inspect.getmembers(base):
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
906
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
907
1628
# with the wrong interface name
908
1629
if (not hasattr(attribute, "_dbus_interface")
909
or not attribute._dbus_interface
910
.startswith("se.recompile.Mandos")):
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
911
1632
continue
912
1633
# Create an alternate D-Bus interface name based on
913
1634
# the current name
914
alt_interface = (attribute._dbus_interface
915
.replace("se.recompile.Mandos",
916
"se.bsnet.fukt.Mandos"))
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
917
1638
# Is this a D-Bus signal?
918
1639
if getattr(attribute, "_dbus_is_signal", False):
919
# Extract the original non-method function by
920
# black magic
921
nonmethod_func = (dict(
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
922
1644
zip(attribute.func_code.co_freevars,
923
attribute.__closure__))["func"]
924
.cell_contents)
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
925
1652
# Create a new, but exactly alike, function
926
1653
# object, and decorate it to be a new D-Bus signal
927
1654
# with the alternate D-Bus interface name
928
new_function = (dbus.service.signal
929
(alt_interface,
930
attribute._dbus_signature)
931
(types.FunctionType(
932
nonmethod_func.func_code,
933
nonmethod_func.func_globals,
934
nonmethod_func.func_name,
935
nonmethod_func.func_defaults,
936
nonmethod_func.func_closure)))
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
937
1666
# Define a creator of a function to call both the
938
# old and new functions, so both the old and new
939
# signals gets sent when the function is called
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
940
1670
def fixscope(func1, func2):
941
1671
"""This function is a scope container to pass
942
1672
func1 and func2 to the "call_both" function
943
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
944
1676
def call_both(*args, **kwargs):
945
1677
"""This function will emit two D-Bus
946
1678
signals by calling func1 and func2"""
947
1679
func1(*args, **kwargs)
948
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
949
1687
return call_both
950
1688
# Create the "call_both" function and add it to
951
1689
# the class
952
attr[attrname] = fixscope(attribute,
953
new_function)
1690
attr[attrname] = fixscope(attribute, new_function)
954
1691
# Is this a D-Bus method?
955
1692
elif getattr(attribute, "_dbus_is_method", False):
956
1693
# Create a new, but exactly alike, function
957
1694
# object. Decorate it to be a new D-Bus method
958
1695
# with the alternate D-Bus interface name. Add it
959
1696
# to the class.
960
attr[attrname] = (dbus.service.method
961
(alt_interface,
962
attribute._dbus_in_signature,
963
attribute._dbus_out_signature)
964
(types.FunctionType
965
(attribute.func_code,
966
attribute.func_globals,
967
attribute.func_name,
968
attribute.func_defaults,
969
attribute.func_closure)))
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
970
1709
# Is this a D-Bus property?
971
1710
elif getattr(attribute, "_dbus_is_property", False):
972
1711
# Create a new, but exactly alike, function
973
1712
# object, and decorate it to be a new D-Bus
974
1713
# property with the alternate D-Bus interface
975
1714
# name. Add it to the class.
976
attr[attrname] = (dbus_service_property
977
(alt_interface,
978
attribute._dbus_signature,
979
attribute._dbus_access,
980
attribute
981
._dbus_get_args_options
982
["byte_arrays"])
983
(types.FunctionType
984
(attribute.func_code,
985
attribute.func_globals,
986
attribute.func_name,
987
attribute.func_defaults,
988
attribute.func_closure)))
989
return type.__new__(mcs, name, bases, attr)
990
991
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
992
1767
class ClientDBus(Client, DBusObjectWithProperties):
993
1768
"""A Client class using D-Bus
994
1769
995
1770
Attributes:
996
1771
dbus_object_path: dbus.ObjectPath
997
1772
bus: dbus.SystemBus()
998
1773
"""
999
1774
1000
1775
runtime_expansions = (Client.runtime_expansions
1001
+ ("dbus_object_path",))
1002
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
1003
1780
# dbus.service.Object doesn't use super(), so we can't either.
1004
1005
def __init__(self, bus = None, *args, **kwargs):
1781
1782
def __init__(self, bus=None, *args, **kwargs):
1006
1783
self.bus = bus
1007
1784
Client.__init__(self, *args, **kwargs)
1008
1009
self._approvals_pending = 0
1010
1785
# Only now, when this client is initialized, can it show up on
1011
1786
# the D-Bus
1012
client_object_name = unicode(self.name).translate(
1787
client_object_name = str(self.name).translate(
1013
1788
{ord("."): ord("_"),
1014
1789
ord("-"): ord("_")})
1015
self.dbus_object_path = (dbus.ObjectPath
1016
("/clients/" + client_object_name))
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
1017
1792
DBusObjectWithProperties.__init__(self, self.bus,
1018
1793
self.dbus_object_path)
1019
1020
def notifychangeproperty(transform_func,
1021
dbus_name, type_func=lambda x: x,
1022
variant_level=1):
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1023
1800
""" Modify a variable so that it's a property which announces
1024
1801
its changes to DBus.
1025
1802
1026
1803
transform_fun: Function that takes a value and a variant_level
1027
1804
and transforms it to a D-Bus type.
1028
1805
dbus_name: D-Bus name of the variable
1030
1807
to the D-Bus. Default: no transform
1031
1808
variant_level: D-Bus variant level. Default: 1
1032
1809
"""
1033
attrname = "_{0}".format(dbus_name)
1810
attrname = "_{}".format(dbus_name)
1811
1034
1812
def setter(self, value):
1035
1813
if hasattr(self, "dbus_object_path"):
1036
1814
if (not hasattr(self, attrname) or
1037
1815
type_func(getattr(self, attrname, None))
1038
1816
!= type_func(value)):
1039
dbus_value = transform_func(type_func(value),
1040
variant_level
1041
=variant_level)
1042
self.PropertyChanged(dbus.String(dbus_name),
1043
dbus_value)
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1044
1832
setattr(self, attrname, value)
1045
1833
1046
1834
return property(lambda self: getattr(self, attrname), setter)
1047
1048
1835
1049
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1050
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1051
1838
"ApprovalPending",
1052
type_func = bool)
1839
type_func=bool)
1053
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1054
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1055
1842
"LastEnabled")
1056
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1057
type_func = lambda checker:
1058
checker is not None)
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1059
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1060
1847
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1061
1850
last_approval_request = notifychangeproperty(
1062
1851
datetime_to_dbus, "LastApprovalRequest")
1063
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1064
1853
"ApprovedByDefault")
1065
approval_delay = notifychangeproperty(dbus.UInt16,
1066
"ApprovalDelay",
1067
type_func =
1068
_timedelta_to_milliseconds)
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1069
1857
approval_duration = notifychangeproperty(
1070
dbus.UInt16, "ApprovalDuration",
1071
type_func = _timedelta_to_milliseconds)
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1072
1860
host = notifychangeproperty(dbus.String, "Host")
1073
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1074
type_func =
1075
_timedelta_to_milliseconds)
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1076
1864
extended_timeout = notifychangeproperty(
1077
dbus.UInt16, "ExtendedTimeout",
1078
type_func = _timedelta_to_milliseconds)
1079
interval = notifychangeproperty(dbus.UInt16,
1080
"Interval",
1081
type_func =
1082
_timedelta_to_milliseconds)
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1083
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1084
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1085
1874
del notifychangeproperty
1086
1875
1087
1876
def __del__(self, *args, **kwargs):
1088
1877
try:
1089
1878
self.remove_from_connection()
1092
1881
if hasattr(DBusObjectWithProperties, "__del__"):
1093
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1094
1883
Client.__del__(self, *args, **kwargs)
1095
1096
def checker_callback(self, pid, condition, command,
1097
*args, **kwargs):
1098
self.checker_callback_tag = None
1099
self.checker = None
1100
if os.WIFEXITED(condition):
1101
exitstatus = os.WEXITSTATUS(condition)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1102
1892
# Emit D-Bus signal
1103
1893
self.CheckerCompleted(dbus.Int16(exitstatus),
1104
dbus.Int64(condition),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1105
1896
dbus.String(command))
1106
1897
else:
1107
1898
# Emit D-Bus signal
1108
1899
self.CheckerCompleted(dbus.Int16(-1),
1109
dbus.Int64(condition),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1110
1904
dbus.String(command))
1111
1112
return Client.checker_callback(self, pid, condition, command,
1113
*args, **kwargs)
1114
1905
return ret
1906
1115
1907
def start_checker(self, *args, **kwargs):
1116
old_checker = self.checker
1117
if self.checker is not None:
1118
old_checker_pid = self.checker.pid
1119
else:
1120
old_checker_pid = None
1908
old_checker_pid = getattr(self.checker, "pid", None)
1121
1909
r = Client.start_checker(self, *args, **kwargs)
1122
1910
# Only if new checker process was started
1123
1911
if (self.checker is not None
1125
1913
# Emit D-Bus signal
1126
1914
self.CheckerStarted(self.current_checker_command)
1127
1915
return r
1128
1916
1129
1917
def _reset_approved(self):
1130
self._approved = None
1918
self.approved = None
1131
1919
return False
1132
1920
1133
1921
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1134
1925
self.send_changedstate()
1135
self._approved = value
1136
gobject.timeout_add(_timedelta_to_milliseconds
1137
(self.approval_duration),
1138
self._reset_approved)
1139
1140
1141
## D-Bus methods, signals & properties
1142
_interface = "se.recompile.Mandos.Client"
1143
1144
## Signals
1145
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1146
1933
# CheckerCompleted - signal
1147
1934
@dbus.service.signal(_interface, signature="nxs")
1148
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
1149
1936
"D-Bus signal"
1150
1937
pass
1151
1938
1152
1939
# CheckerStarted - signal
1153
1940
@dbus.service.signal(_interface, signature="s")
1154
1941
def CheckerStarted(self, command):
1155
1942
"D-Bus signal"
1156
1943
pass
1157
1944
1158
1945
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1159
1947
@dbus.service.signal(_interface, signature="sv")
1160
1948
def PropertyChanged(self, property, value):
1161
1949
"D-Bus signal"
1162
1950
pass
1163
1951
1164
1952
# GotSecret - signal
1165
1953
@dbus.service.signal(_interface)
1166
1954
def GotSecret(self):
1169
1957
server to mandos-client
1170
1958
"""
1171
1959
pass
1172
1960
1173
1961
# Rejected - signal
1174
1962
@dbus.service.signal(_interface, signature="s")
1175
1963
def Rejected(self, reason):
1176
1964
"D-Bus signal"
1177
1965
pass
1178
1966
1179
1967
# NeedApproval - signal
1180
1968
@dbus.service.signal(_interface, signature="tb")
1181
1969
def NeedApproval(self, timeout, default):
1182
1970
"D-Bus signal"
1183
1971
return self.need_approval()
1184
1185
# NeRwequest - signal
1186
@dbus.service.signal(_interface, signature="s")
1187
def NewRequest(self, ip):
1188
"""D-Bus signal
1189
Is sent after a client request a password.
1190
"""
1191
pass
1192
1193
## Methods
1194
1972
1973
# Methods
1974
1195
1975
# Approve - method
1196
1976
@dbus.service.method(_interface, in_signature="b")
1197
1977
def Approve(self, value):
1198
1978
self.approve(value)
1199
1979
1200
1980
# CheckedOK - method
1201
1981
@dbus.service.method(_interface)
1202
1982
def CheckedOK(self):
1203
1983
self.checked_ok()
1204
1984
1205
1985
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1206
1987
@dbus.service.method(_interface)
1207
1988
def Enable(self):
1208
1989
"D-Bus method"
1209
1990
self.enable()
1210
1991
1211
1992
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1212
1994
@dbus.service.method(_interface)
1213
1995
def StartChecker(self):
1214
1996
"D-Bus method"
1215
1997
self.start_checker()
1216
1998
1217
1999
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1218
2001
@dbus.service.method(_interface)
1219
2002
def Disable(self):
1220
2003
"D-Bus method"
1221
2004
self.disable()
1222
2005
1223
2006
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1224
2008
@dbus.service.method(_interface)
1225
2009
def StopChecker(self):
1226
2010
self.stop_checker()
1227
1228
## Properties
1229
2011
2012
# Properties
2013
1230
2014
# ApprovalPending - property
1231
2015
@dbus_service_property(_interface, signature="b", access="read")
1232
2016
def ApprovalPending_dbus_property(self):
1233
2017
return dbus.Boolean(bool(self.approvals_pending))
1234
2018
1235
2019
# ApprovedByDefault - property
1236
@dbus_service_property(_interface, signature="b",
2020
@dbus_service_property(_interface,
2021
signature="b",
1237
2022
access="readwrite")
1238
2023
def ApprovedByDefault_dbus_property(self, value=None):
1239
2024
if value is None: # get
1240
2025
return dbus.Boolean(self.approved_by_default)
1241
2026
self.approved_by_default = bool(value)
1242
2027
1243
2028
# ApprovalDelay - property
1244
@dbus_service_property(_interface, signature="t",
2029
@dbus_service_property(_interface,
2030
signature="t",
1245
2031
access="readwrite")
1246
2032
def ApprovalDelay_dbus_property(self, value=None):
1247
2033
if value is None: # get
1248
return dbus.UInt64(self.approval_delay_milliseconds())
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1249
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1250
2037
1251
2038
# ApprovalDuration - property
1252
@dbus_service_property(_interface, signature="t",
2039
@dbus_service_property(_interface,
2040
signature="t",
1253
2041
access="readwrite")
1254
2042
def ApprovalDuration_dbus_property(self, value=None):
1255
2043
if value is None: # get
1256
return dbus.UInt64(_timedelta_to_milliseconds(
1257
self.approval_duration))
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1258
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1259
2047
1260
2048
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1261
2051
@dbus_service_property(_interface, signature="s", access="read")
1262
2052
def Name_dbus_property(self):
1263
2053
return dbus.String(self.name)
1264
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1265
2062
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1266
2065
@dbus_service_property(_interface, signature="s", access="read")
1267
2066
def Fingerprint_dbus_property(self):
1268
2067
return dbus.String(self.fingerprint)
1269
2068
1270
2069
# Host - property
1271
@dbus_service_property(_interface, signature="s",
2070
@dbus_service_property(_interface,
2071
signature="s",
1272
2072
access="readwrite")
1273
2073
def Host_dbus_property(self, value=None):
1274
2074
if value is None: # get
1275
2075
return dbus.String(self.host)
1276
self.host = value
1277
2076
self.host = str(value)
2077
1278
2078
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1279
2081
@dbus_service_property(_interface, signature="s", access="read")
1280
2082
def Created_dbus_property(self):
1281
return dbus.String(datetime_to_dbus(self.created))
1282
2083
return datetime_to_dbus(self.created)
2084
1283
2085
# LastEnabled - property
1284
2086
@dbus_service_property(_interface, signature="s", access="read")
1285
2087
def LastEnabled_dbus_property(self):
1286
2088
return datetime_to_dbus(self.last_enabled)
1287
2089
1288
2090
# Enabled - property
1289
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1290
2093
access="readwrite")
1291
2094
def Enabled_dbus_property(self, value=None):
1292
2095
if value is None: # get
1295
2098
self.enable()
1296
2099
else:
1297
2100
self.disable()
1298
2101
1299
2102
# LastCheckedOK - property
1300
@dbus_service_property(_interface, signature="s",
2103
@dbus_service_property(_interface,
2104
signature="s",
1301
2105
access="readwrite")
1302
2106
def LastCheckedOK_dbus_property(self, value=None):
1303
2107
if value is not None:
1304
2108
self.checked_ok()
1305
2109
return
1306
2110
return datetime_to_dbus(self.last_checked_ok)
1307
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1308
2117
# Expires - property
1309
2118
@dbus_service_property(_interface, signature="s", access="read")
1310
2119
def Expires_dbus_property(self):
1311
2120
return datetime_to_dbus(self.expires)
1312
2121
1313
2122
# LastApprovalRequest - property
1314
2123
@dbus_service_property(_interface, signature="s", access="read")
1315
2124
def LastApprovalRequest_dbus_property(self):
1316
2125
return datetime_to_dbus(self.last_approval_request)
1317
2126
1318
2127
# Timeout - property
1319
@dbus_service_property(_interface, signature="t",
2128
@dbus_service_property(_interface,
2129
signature="t",
1320
2130
access="readwrite")
1321
2131
def Timeout_dbus_property(self, value=None):
1322
2132
if value is None: # get
1323
return dbus.UInt64(self.timeout_milliseconds())
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1324
2135
self.timeout = datetime.timedelta(0, 0, 0, value)
1325
if getattr(self, "disable_initiator_tag", None) is None:
1326
return
1327
# Reschedule timeout
1328
gobject.source_remove(self.disable_initiator_tag)
1329
self.disable_initiator_tag = None
1330
self.expires = None
1331
time_to_die = _timedelta_to_milliseconds((self
1332
.last_checked_ok
1333
+ self.timeout)
1334
- datetime.datetime
1335
.utcnow())
1336
if time_to_die <= 0:
1337
# The timeout has passed
1338
self.disable()
1339
else:
1340
self.expires = (datetime.datetime.utcnow()
1341
+ datetime.timedelta(milliseconds =
1342
time_to_die))
1343
self.disable_initiator_tag = (gobject.timeout_add
1344
(time_to_die, self.disable))
1345
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1346
2152
# ExtendedTimeout - property
1347
@dbus_service_property(_interface, signature="t",
2153
@dbus_service_property(_interface,
2154
signature="t",
1348
2155
access="readwrite")
1349
2156
def ExtendedTimeout_dbus_property(self, value=None):
1350
2157
if value is None: # get
1351
return dbus.UInt64(self.extended_timeout_milliseconds())
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1352
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1353
2161
1354
2162
# Interval - property
1355
@dbus_service_property(_interface, signature="t",
2163
@dbus_service_property(_interface,
2164
signature="t",
1356
2165
access="readwrite")
1357
2166
def Interval_dbus_property(self, value=None):
1358
2167
if value is None: # get
1359
return dbus.UInt64(self.interval_milliseconds())
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1360
2169
self.interval = datetime.timedelta(0, 0, 0, value)
1361
2170
if getattr(self, "checker_initiator_tag", None) is None:
1362
2171
return
1363
# Reschedule checker run
1364
gobject.source_remove(self.checker_initiator_tag)
1365
self.checker_initiator_tag = (gobject.timeout_add
1366
(value, self.start_checker))
1367
self.start_checker() # Start one now, too
1368
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1369
2179
# Checker - property
1370
@dbus_service_property(_interface, signature="s",
2180
@dbus_service_property(_interface,
2181
signature="s",
1371
2182
access="readwrite")
1372
2183
def Checker_dbus_property(self, value=None):
1373
2184
if value is None: # get
1374
2185
return dbus.String(self.checker_command)
1375
self.checker_command = value
1376
2186
self.checker_command = str(value)
2187
1377
2188
# CheckerRunning - property
1378
@dbus_service_property(_interface, signature="b",
2189
@dbus_service_property(_interface,
2190
signature="b",
1379
2191
access="readwrite")
1380
2192
def CheckerRunning_dbus_property(self, value=None):
1381
2193
if value is None: # get
1384
2196
self.start_checker()
1385
2197
else:
1386
2198
self.stop_checker()
1387
2199
1388
2200
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
1389
2204
@dbus_service_property(_interface, signature="o", access="read")
1390
2205
def ObjectPath_dbus_property(self):
1391
return self.dbus_object_path # is already a dbus.ObjectPath
1392
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1393
2208
# Secret = property
1394
@dbus_service_property(_interface, signature="ay",
1395
access="write", byte_arrays=True)
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1396
2216
def Secret_dbus_property(self, value):
1397
self.secret = str(value)
1398
2217
self.secret = bytes(value)
2218
1399
2219
del _interface
1400
2220
1401
2221
1402
2222
class ProxyClient(object):
1403
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1404
2224
self._pipe = child_pipe
1405
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
1406
2226
if not self._pipe.recv():
1407
raise KeyError()
1408
2227
raise KeyError(key_id or fpr)
2228
1409
2229
def __getattribute__(self, name):
1410
if(name == '_pipe'):
2230
if name == '_pipe':
1411
2231
return super(ProxyClient, self).__getattribute__(name)
1412
2232
self._pipe.send(('getattr', name))
1413
2233
data = self._pipe.recv()
1414
2234
if data[0] == 'data':
1415
2235
return data[1]
1416
2236
if data[0] == 'function':
2237
1417
2238
def func(*args, **kwargs):
1418
2239
self._pipe.send(('funcall', name, args, kwargs))
1419
2240
return self._pipe.recv()[1]
2241
1420
2242
return func
1421
2243
1422
2244
def __setattr__(self, name, value):
1423
if(name == '_pipe'):
2245
if name == '_pipe':
1424
2246
return super(ProxyClient, self).__setattr__(name, value)
1425
2247
self._pipe.send(('setattr', name, value))
1426
2248
1427
2249
1428
class ClientDBusTransitional(ClientDBus):
1429
__metaclass__ = AlternateDBusNamesMetaclass
1430
1431
1432
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1433
2251
"""A class to handle client connections.
1434
2252
1435
2253
Instantiated once for each connection to handle it.
1436
2254
Note: This will run in its own forked process."""
1437
2255
1438
2256
def handle(self):
1439
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
1440
2258
logger.info("TCP connection from: %s",
1441
unicode(self.client_address))
2259
str(self.client_address))
1442
2260
logger.debug("Pipe FD: %d",
1443
2261
self.server.child_pipe.fileno())
1444
1445
session = (gnutls.connection
1446
.ClientSession(self.request,
1447
gnutls.connection
1448
.X509Credentials()))
1449
1450
# Note: gnutls.connection.X509Credentials is really a
1451
# generic GnuTLS certificate credentials object so long as
1452
# no X.509 keys are added to it. Therefore, we can use it
1453
# here despite using OpenPGP certificates.
1454
1455
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1456
# "+AES-256-CBC", "+SHA1",
1457
# "+COMP-NULL", "+CTYPE-OPENPGP",
1458
# "+DHE-DSS"))
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1459
2269
# Use a fallback default, since this MUST be set.
1460
2270
priority = self.server.gnutls_priority
1461
2271
if priority is None:
1462
2272
priority = "NORMAL"
1463
(gnutls.library.functions
1464
.gnutls_priority_set_direct(session._c_object,
1465
priority, None))
1466
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1467
2277
# Start communication using the Mandos protocol
1468
2278
# Get protocol number
1469
2279
line = self.request.makefile().readline()
1470
2280
logger.debug("Protocol version: %r", line)
1471
2281
try:
1472
2282
if int(line.strip().split()[0]) > 1:
1473
raise RuntimeError
2283
raise RuntimeError(line)
1474
2284
except (ValueError, IndexError, RuntimeError) as error:
1475
2285
logger.error("Unknown protocol version: %s", error)
1476
2286
return
1477
2287
1478
2288
# Start GnuTLS connection
1479
2289
try:
1480
2290
session.handshake()
1481
except gnutls.errors.GNUTLSError as error:
2291
except gnutls.Error as error:
1482
2292
logger.warning("Handshake failed: %s", error)
1483
2293
# Do not run session.bye() here: the session is not
1484
2294
# established. Just abandon the request.
1485
2295
return
1486
2296
logger.debug("Handshake succeeded")
1487
2297
1488
2298
approval_required = False
1489
2299
try:
1490
try:
1491
fpr = self.fingerprint(self.peer_certificate
1492
(session))
1493
except (TypeError,
1494
gnutls.errors.GNUTLSError) as error:
1495
logger.warning("Bad certificate: %s", error)
1496
return
1497
logger.debug("Fingerprint: %s", fpr)
1498
if self.server.use_dbus:
1499
# Emit D-Bus signal
1500
client.NewRequest(str(self.client_address))
1501
1502
try:
1503
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1504
2322
self.client_address)
1505
2323
except KeyError:
1506
2324
return
1507
2325
1508
2326
if client.approval_delay:
1509
2327
delay = client.approval_delay
1510
2328
client.approvals_pending += 1
1511
2329
approval_required = True
1512
2330
1513
2331
while True:
1514
2332
if not client.enabled:
1515
2333
logger.info("Client %s is disabled",
1516
client.name)
2334
client.name)
1517
2335
if self.server.use_dbus:
1518
2336
# Emit D-Bus signal
1519
2337
client.Rejected("Disabled")
1520
2338
return
1521
1522
if client._approved or not client.approval_delay:
1523
#We are approved or approval is disabled
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1524
2342
break
1525
elif client._approved is None:
2343
elif client.approved is None:
1526
2344
logger.info("Client %s needs approval",
1527
2345
client.name)
1528
2346
if self.server.use_dbus:
1529
2347
# Emit D-Bus signal
1530
2348
client.NeedApproval(
1531
client.approval_delay_milliseconds(),
1532
client.approved_by_default)
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1533
2351
else:
1534
2352
logger.warning("Client %s was not approved",
1535
2353
client.name)
1537
2355
# Emit D-Bus signal
1538
2356
client.Rejected("Denied")
1539
2357
return
1540
1541
#wait until timeout or approved
2358
2359
# wait until timeout or approved
1542
2360
time = datetime.datetime.now()
1543
2361
client.changedstate.acquire()
1544
(client.changedstate.wait
1545
(float(client._timedelta_to_milliseconds(delay)
1546
/ 1000)))
2362
client.changedstate.wait(delay.total_seconds())
1547
2363
client.changedstate.release()
1548
2364
time2 = datetime.datetime.now()
1549
2365
if (time2 - time) >= delay:
1559
2375
break
1560
2376
else:
1561
2377
delay -= time2 - time
1562
1563
sent_size = 0
1564
while sent_size < len(client.secret):
1565
try:
1566
sent = session.send(client.secret[sent_size:])
1567
except gnutls.errors.GNUTLSError as error:
1568
logger.warning("gnutls send failed")
1569
return
1570
logger.debug("Sent: %d, remaining: %d",
1571
sent, len(client.secret)
1572
- (sent_size + sent))
1573
sent_size += sent
1574
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1575
2386
logger.info("Sending secret to %s", client.name)
1576
2387
# bump the timeout using extended_timeout
1577
client.checked_ok(client.extended_timeout)
2388
client.bump_timeout(client.extended_timeout)
1578
2389
if self.server.use_dbus:
1579
2390
# Emit D-Bus signal
1580
2391
client.GotSecret()
1581
2392
1582
2393
finally:
1583
2394
if approval_required:
1584
2395
client.approvals_pending -= 1
1585
2396
try:
1586
2397
session.bye()
1587
except gnutls.errors.GNUTLSError as error:
1588
logger.warning("GnuTLS bye failed")
1589
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1590
2402
@staticmethod
1591
2403
def peer_certificate(session):
1592
"Return the peer's OpenPGP certificate as a bytestring"
1593
# If not an OpenPGP certificate...
1594
if (gnutls.library.functions
1595
.gnutls_certificate_type_get(session._c_object)
1596
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1597
# ...do the normal thing
1598
return session.peer_certificate
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1599
2420
list_size = ctypes.c_uint(1)
1600
cert_list = (gnutls.library.functions
1601
.gnutls_certificate_get_peers
2421
cert_list = (gnutls.certificate_get_peers
1602
2422
(session._c_object, ctypes.byref(list_size)))
1603
2423
if not bool(cert_list) and list_size.value != 0:
1604
raise gnutls.errors.GNUTLSError("error getting peer"
1605
" certificate")
2424
raise gnutls.Error("error getting peer certificate")
1606
2425
if list_size.value == 0:
1607
2426
return None
1608
2427
cert = cert_list[0]
1609
2428
return ctypes.string_at(cert.data, cert.size)
1610
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1611
2464
@staticmethod
1612
2465
def fingerprint(openpgp):
1613
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1614
2467
# New GnuTLS "datum" with the OpenPGP public key
1615
datum = (gnutls.library.types
1616
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1617
ctypes.POINTER
1618
(ctypes.c_ubyte)),
1619
ctypes.c_uint(len(openpgp))))
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1620
2472
# New empty GnuTLS certificate
1621
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1622
(gnutls.library.functions
1623
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1624
2475
# Import the OpenPGP public key into the certificate
1625
(gnutls.library.functions
1626
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1627
gnutls.library.constants
1628
.GNUTLS_OPENPGP_FMT_RAW))
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1629
2478
# Verify the self signature in the key
1630
2479
crtverify = ctypes.c_uint()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_verify_self(crt, 0,
1633
ctypes.byref(crtverify)))
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1634
2482
if crtverify.value != 0:
1635
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1636
raise (gnutls.errors.CertificateSecurityError
1637
("Verify failed"))
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1638
2486
# New buffer for the fingerprint
1639
2487
buf = ctypes.create_string_buffer(20)
1640
2488
buf_len = ctypes.c_size_t()
1641
2489
# Get the fingerprint from the certificate into the buffer
1642
(gnutls.library.functions
1643
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1644
ctypes.byref(buf_len)))
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1645
2492
# Deinit the certificate
1646
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2493
gnutls.openpgp_crt_deinit(crt)
1647
2494
# Convert the buffer to a Python bytestring
1648
2495
fpr = ctypes.string_at(buf, buf_len.value)
1649
2496
# Convert the bytestring to hexadecimal notation
1653
2500
1654
2501
class MultiprocessingMixIn(object):
1655
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
1656
2504
def sub_process_main(self, request, address):
1657
2505
try:
1658
2506
self.finish_request(request, address)
1659
except:
2507
except Exception:
1660
2508
self.handle_error(request, address)
1661
2509
self.close_request(request)
1662
2510
1663
2511
def process_request(self, request, address):
1664
2512
"""Start a new process to process the request."""
1665
proc = multiprocessing.Process(target = self.sub_process_main,
1666
args = (request,
1667
address))
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1668
2515
proc.start()
1669
2516
return proc
1670
2517
1671
2518
1672
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1673
2520
""" adds a pipe to the MixIn """
2521
1674
2522
def process_request(self, request, client_address):
1675
2523
"""Overrides and wraps the original process_request().
1676
2524
1677
2525
This function creates a new pipe in self.pipe
1678
2526
"""
1679
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1680
2528
1681
2529
proc = MultiprocessingMixIn.process_request(self, request,
1682
2530
client_address)
1683
2531
self.child_pipe.close()
1684
2532
self.add_pipe(parent_pipe, proc)
1685
2533
1686
2534
def add_pipe(self, parent_pipe, proc):
1687
2535
"""Dummy function; override as necessary"""
1688
raise NotImplementedError
2536
raise NotImplementedError()
1689
2537
1690
2538
1691
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1692
2540
socketserver.TCPServer, object):
1693
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1694
2542
1695
2543
Attributes:
1696
2544
enabled: Boolean; whether this server is activated yet
1697
2545
interface: None or a network interface name (string)
1698
2546
use_ipv6: Boolean; to use IPv6 or not
1699
2547
"""
2548
1700
2549
def __init__(self, server_address, RequestHandlerClass,
1701
interface=None, use_ipv6=True):
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1702
2556
self.interface = interface
1703
2557
if use_ipv6:
1704
2558
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
1705
2586
socketserver.TCPServer.__init__(self, server_address,
1706
2587
RequestHandlerClass)
2588
1707
2589
def server_bind(self):
1708
2590
"""This overrides the normal server_bind() function
1709
2591
to bind to an interface if one was specified, and also NOT to
1710
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
1711
2594
if self.interface is not None:
1712
2595
if SO_BINDTODEVICE is None:
1713
logger.error("SO_BINDTODEVICE does not exist;"
1714
" cannot bind to interface %s",
1715
self.interface)
1716
else:
1717
try:
1718
self.socket.setsockopt(socket.SOL_SOCKET,
1719
SO_BINDTODEVICE,
1720
str(self.interface
1721
+ '\0'))
1722
except socket.error as error:
1723
if error[0] == errno.EPERM:
1724
logger.error("No permission to"
1725
" bind to interface %s",
1726
self.interface)
1727
elif error[0] == errno.ENOPROTOOPT:
1728
logger.error("SO_BINDTODEVICE not available;"
1729
" cannot bind to interface %s",
1730
self.interface)
1731
else:
1732
raise
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1733
2617
# Only bind(2) the socket if we really need to.
1734
2618
if self.server_address[0] or self.server_address[1]:
1735
2619
if not self.server_address[0]:
1736
2620
if self.address_family == socket.AF_INET6:
1737
any_address = "::" # in6addr_any
2621
any_address = "::" # in6addr_any
1738
2622
else:
1739
any_address = socket.INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
1740
2624
self.server_address = (any_address,
1741
2625
self.server_address[1])
1742
2626
elif not self.server_address[1]:
1743
self.server_address = (self.server_address[0],
1744
0)
2627
self.server_address = (self.server_address[0], 0)
1745
2628
# if self.interface:
1746
2629
# self.server_address = (self.server_address[0],
1747
2630
# 0, # port
1753
2636
1754
2637
class MandosServer(IPv6_TCPServer):
1755
2638
"""Mandos server.
1756
2639
1757
2640
Attributes:
1758
2641
clients: set of Client objects
1759
2642
gnutls_priority GnuTLS priority string
1760
2643
use_dbus: Boolean; to emit D-Bus signals or not
1761
1762
Assumes a gobject.MainLoop event loop.
2644
2645
Assumes a GLib.MainLoop event loop.
1763
2646
"""
2647
1764
2648
def __init__(self, server_address, RequestHandlerClass,
1765
interface=None, use_ipv6=True, clients=None,
1766
gnutls_priority=None, use_dbus=True):
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1767
2655
self.enabled = False
1768
2656
self.clients = clients
1769
2657
if self.clients is None:
1772
2660
self.gnutls_priority = gnutls_priority
1773
2661
IPv6_TCPServer.__init__(self, server_address,
1774
2662
RequestHandlerClass,
1775
interface = interface,
1776
use_ipv6 = use_ipv6)
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1777
2667
def server_activate(self):
1778
2668
if self.enabled:
1779
2669
return socketserver.TCPServer.server_activate(self)
1780
2670
1781
2671
def enable(self):
1782
2672
self.enabled = True
1783
2673
1784
2674
def add_pipe(self, parent_pipe, proc):
1785
2675
# Call "handle_ipc" for both data and EOF events
1786
gobject.io_add_watch(parent_pipe.fileno(),
1787
gobject.IO_IN | gobject.IO_HUP,
1788
functools.partial(self.handle_ipc,
1789
parent_pipe =
1790
parent_pipe,
1791
proc = proc))
1792
1793
def handle_ipc(self, source, condition, parent_pipe=None,
1794
proc = None, client_object=None):
1795
condition_names = {
1796
gobject.IO_IN: "IN", # There is data to read.
1797
gobject.IO_OUT: "OUT", # Data can be written (without
1798
# blocking).
1799
gobject.IO_PRI: "PRI", # There is urgent data to read.
1800
gobject.IO_ERR: "ERR", # Error condition.
1801
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1802
# broken, usually for pipes and
1803
# sockets).
1804
}
1805
conditions_string = ' | '.join(name
1806
for cond, name in
1807
condition_names.iteritems()
1808
if cond & condition)
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1809
2687
# error, or the other end of multiprocessing.Pipe has closed
1810
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1811
2689
# Wait for other process to exit
1812
2690
proc.join()
1813
2691
return False
1814
2692
1815
2693
# Read a request from the child
1816
2694
request = parent_pipe.recv()
1817
2695
command = request[0]
1818
2696
1819
2697
if command == 'init':
1820
fpr = request[1]
1821
address = request[2]
1822
1823
for c in self.clients.itervalues():
1824
if c.fingerprint == fpr:
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1825
2709
client = c
1826
2710
break
1827
2711
else:
1828
logger.info("Client not found for fingerprint: %s, ad"
1829
"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1830
2714
if self.use_dbus:
1831
2715
# Emit D-Bus signal
1832
mandos_dbus_service.ClientNotFound(fpr,
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1833
2717
address[0])
1834
2718
parent_pipe.send(False)
1835
2719
return False
1836
1837
gobject.io_add_watch(parent_pipe.fileno(),
1838
gobject.IO_IN | gobject.IO_HUP,
1839
functools.partial(self.handle_ipc,
1840
parent_pipe =
1841
parent_pipe,
1842
proc = proc,
1843
client_object =
1844
client))
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1845
2728
parent_pipe.send(True)
1846
2729
# remove the old hook in favor of the new above hook on
1847
2730
# same fileno
1850
2733
funcname = request[1]
1851
2734
args = request[2]
1852
2735
kwargs = request[3]
1853
2736
1854
2737
parent_pipe.send(('data', getattr(client_object,
1855
2738
funcname)(*args,
1856
**kwargs)))
1857
2739
**kwargs)))
2740
1858
2741
if command == 'getattr':
1859
2742
attrname = request[1]
1860
if callable(client_object.__getattribute__(attrname)):
1861
parent_pipe.send(('function',))
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1862
2746
else:
1863
parent_pipe.send(('data', client_object
1864
.__getattribute__(attrname)))
1865
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1866
2750
if command == 'setattr':
1867
2751
attrname = request[1]
1868
2752
value = request[2]
1869
2753
setattr(client_object, attrname, value)
1870
2754
1871
2755
return True
1872
2756
1873
2757
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
1874
2857
def string_to_delta(interval):
1875
2858
"""Parse a string and return a datetime.timedelta
1876
2859
1877
2860
>>> string_to_delta('7d')
1878
2861
datetime.timedelta(7)
1879
2862
>>> string_to_delta('60s')
1887
2870
>>> string_to_delta('5m 30s')
1888
2871
datetime.timedelta(0, 330)
1889
2872
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
1890
2879
timevalue = datetime.timedelta(0)
1891
2880
for s in interval.split():
1892
2881
try:
1893
suffix = unicode(s[-1])
2882
suffix = s[-1]
1894
2883
value = int(s[:-1])
1895
2884
if suffix == "d":
1896
2885
delta = datetime.timedelta(value)
1903
2892
elif suffix == "w":
1904
2893
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1905
2894
else:
1906
raise ValueError("Unknown suffix %r" % suffix)
1907
except (ValueError, IndexError) as e:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1908
2897
raise ValueError(*(e.args))
1909
2898
timevalue += delta
1910
2899
return timevalue
1911
2900
1912
2901
1913
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
1914
2903
"""See daemon(3). Standard BSD Unix function.
1915
2904
1916
2905
This should really exist as os.daemon, but it doesn't (yet)."""
1917
2906
if os.fork():
1918
2907
sys.exit()
1923
2912
sys.exit()
1924
2913
if not noclose:
1925
2914
# Close all standard open file descriptors
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1927
2916
if not stat.S_ISCHR(os.fstat(null).st_mode):
1928
2917
raise OSError(errno.ENODEV,
1929
"%s not a character device"
1930
% os.path.devnull)
2918
"{} not a character device"
2919
.format(os.devnull))
1931
2920
os.dup2(null, sys.stdin.fileno())
1932
2921
os.dup2(null, sys.stdout.fileno())
1933
2922
os.dup2(null, sys.stderr.fileno())
1936
2925
1937
2926
1938
2927
def main():
1939
2928
1940
2929
##################################################################
1941
2930
# Parsing of options, both command line and config file
1942
2931
1943
2932
parser = argparse.ArgumentParser()
1944
2933
parser.add_argument("-v", "--version", action="version",
1945
version = "%%(prog)s %s" % version,
2934
version="%(prog)s {}".format(version),
1946
2935
help="show version number and exit")
1947
2936
parser.add_argument("-i", "--interface", metavar="IF",
1948
2937
help="Bind to interface IF")
1954
2943
help="Run self-test")
1955
2944
parser.add_argument("--debug", action="store_true",
1956
2945
help="Debug mode; run in foreground and log"
1957
" to terminal")
2946
" to terminal", default=None)
1958
2947
parser.add_argument("--debuglevel", metavar="LEVEL",
1959
2948
help="Debug level for stdout output")
1960
2949
parser.add_argument("--priority", help="GnuTLS"
1967
2956
" files")
1968
2957
parser.add_argument("--no-dbus", action="store_false",
1969
2958
dest="use_dbus", help="Do not provide D-Bus"
1970
" system bus interface")
2959
" system bus interface", default=None)
1971
2960
parser.add_argument("--no-ipv6", action="store_false",
1972
dest="use_ipv6", help="Do not use IPv6")
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
1973
2963
parser.add_argument("--no-restore", action="store_false",
1974
2964
dest="restore", help="Do not restore stored"
1975
" state")
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
1976
2969
parser.add_argument("--statedir", metavar="DIR",
1977
2970
help="Directory to save/restore state in")
1978
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
2976
1979
2977
options = parser.parse_args()
1980
2978
1981
2979
if options.check:
1982
2980
import doctest
1983
doctest.testmod()
1984
sys.exit()
1985
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1986
2984
# Default values for config file for server-global settings
1987
server_defaults = { "interface": "",
1988
"address": "",
1989
"port": "",
1990
"debug": "False",
1991
"priority":
1992
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1993
"servicename": "Mandos",
1994
"use_dbus": "True",
1995
"use_ipv6": "True",
1996
"debuglevel": "",
1997
"restore": "True",
1998
"statedir": "/var/lib/mandos"
1999
}
2000
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2001
3008
# Parse config file for server-global settings
2002
3009
server_config = configparser.SafeConfigParser(server_defaults)
2003
3010
del server_defaults
2004
server_config.read(os.path.join(options.configdir,
2005
"mandos.conf"))
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2006
3012
# Convert the SafeConfigParser object to a dict
2007
3013
server_settings = server_config.defaults()
2008
3014
# Use the appropriate methods on the non-string config options
2009
for option in ("debug", "use_dbus", "use_ipv6"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2010
3017
server_settings[option] = server_config.getboolean("DEFAULT",
2011
3018
option)
2012
3019
if server_settings["port"]:
2013
3020
server_settings["port"] = server_config.getint("DEFAULT",
2014
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
2015
3031
del server_config
2016
3032
2017
3033
# Override the settings from the config file with command line
2018
3034
# options, if set.
2019
3035
for option in ("interface", "address", "port", "debug",
2020
"priority", "servicename", "configdir",
2021
"use_dbus", "use_ipv6", "debuglevel", "restore",
2022
"statedir"):
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
2023
3039
value = getattr(options, option)
2024
3040
if value is not None:
2025
3041
server_settings[option] = value
2026
3042
del options
2027
3043
# Force all strings to be unicode
2028
3044
for option in server_settings.keys():
2029
if type(server_settings[option]) is str:
2030
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
2031
3055
# Now we have our good server settings in "server_settings"
2032
3056
2033
3057
##################################################################
2034
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
2035
3064
# For convenience
2036
3065
debug = server_settings["debug"]
2037
3066
debuglevel = server_settings["debuglevel"]
2039
3068
use_ipv6 = server_settings["use_ipv6"]
2040
3069
stored_state_path = os.path.join(server_settings["statedir"],
2041
3070
stored_state_file)
2042
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
2043
3074
if debug:
2044
initlogger(logging.DEBUG)
3075
initlogger(debug, logging.DEBUG)
2045
3076
else:
2046
3077
if not debuglevel:
2047
initlogger()
3078
initlogger(debug)
2048
3079
else:
2049
3080
level = getattr(logging, debuglevel.upper())
2050
initlogger(level)
2051
3081
initlogger(debug, level)
3082
2052
3083
if server_settings["servicename"] != "Mandos":
2053
syslogger.setFormatter(logging.Formatter
2054
('Mandos (%s) [%%(process)d]:'
2055
' %%(levelname)s: %%(message)s'
2056
% server_settings["servicename"]))
2057
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2058
3089
# Parse config file with clients
2059
client_defaults = { "timeout": "5m",
2060
"extended_timeout": "15m",
2061
"interval": "2m",
2062
"checker": "fping -q -- %%(host)s",
2063
"host": "",
2064
"approval_delay": "0s",
2065
"approval_duration": "1s",
2066
}
2067
client_config = configparser.SafeConfigParser(client_defaults)
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
2068
3092
client_config.read(os.path.join(server_settings["configdir"],
2069
3093
"clients.conf"))
2070
3094
2071
3095
global mandos_dbus_service
2072
3096
mandos_dbus_service = None
2073
2074
tcp_server = MandosServer((server_settings["address"],
2075
server_settings["port"]),
2076
ClientHandler,
2077
interface=(server_settings["interface"]
2078
or None),
2079
use_ipv6=use_ipv6,
2080
gnutls_priority=
2081
server_settings["priority"],
2082
use_dbus=use_dbus)
2083
if not debug:
2084
pidfilename = "/var/run/mandos.pid"
2085
try:
2086
pidfile = open(pidfilename, "w")
2087
except IOError:
2088
logger.error("Could not open file %r", pidfilename)
2089
2090
try:
2091
uid = pwd.getpwnam("_mandos").pw_uid
2092
gid = pwd.getpwnam("_mandos").pw_gid
2093
except KeyError:
2094
try:
2095
uid = pwd.getpwnam("mandos").pw_uid
2096
gid = pwd.getpwnam("mandos").pw_gid
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2097
3127
except KeyError:
2098
try:
2099
uid = pwd.getpwnam("nobody").pw_uid
2100
gid = pwd.getpwnam("nobody").pw_gid
2101
except KeyError:
2102
uid = 65534
2103
gid = 65534
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2104
3132
try:
2105
3133
os.setgid(gid)
2106
3134
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
2107
3138
except OSError as error:
2108
if error[0] != errno.EPERM:
2109
raise error
2110
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2111
3144
if debug:
2112
3145
# Enable all possible GnuTLS debugging
2113
3146
2114
3147
# "Use a log level over 10 to enable all debugging options."
2115
3148
# - GnuTLS manual
2116
gnutls.library.functions.gnutls_global_set_log_level(11)
2117
2118
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2119
3152
def debug_gnutls(level, string):
2120
3153
logger.debug("GnuTLS: %s", string[:-1])
2121
2122
(gnutls.library.functions
2123
.gnutls_global_set_log_function(debug_gnutls))
2124
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2125
3157
# Redirect stdin so all checkers get /dev/null
2126
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2127
3159
os.dup2(null, sys.stdin.fileno())
2128
3160
if null > 2:
2129
3161
os.close(null)
2130
else:
2131
# No console logging
2132
logger.removeHandler(console)
2133
3162
2134
3163
# Need to fork before connecting to D-Bus
2135
if not debug:
3164
if not foreground:
2136
3165
# Close all input and output, do double fork, etc.
2137
3166
daemon()
2138
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2139
3172
global main_loop
2140
3173
# From the Avahi example code
2141
DBusGMainLoop(set_as_default=True )
2142
main_loop = gobject.MainLoop()
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2143
3176
bus = dbus.SystemBus()
2144
3177
# End of Avahi example code
2145
3178
if use_dbus:
2146
3179
try:
2147
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
2148
bus, do_not_queue=True)
2149
old_bus_name = (dbus.service.BusName
2150
("se.bsnet.fukt.Mandos", bus,
2151
do_not_queue=True))
2152
except dbus.exceptions.NameExistsException as e:
2153
logger.error(unicode(e) + ", disabling D-Bus")
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2154
3188
use_dbus = False
2155
3189
server_settings["use_dbus"] = False
2156
3190
tcp_server.use_dbus = False
2157
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2158
service = AvahiServiceToSyslog(name =
2159
server_settings["servicename"],
2160
servicetype = "_mandos._tcp",
2161
protocol = protocol, bus = bus)
2162
if server_settings["interface"]:
2163
service.interface = (if_nametoindex
2164
(str(server_settings["interface"])))
2165
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2166
3202
global multiprocessing_manager
2167
3203
multiprocessing_manager = multiprocessing.Manager()
2168
3204
2169
3205
client_class = Client
2170
3206
if use_dbus:
2171
client_class = functools.partial(ClientDBusTransitional,
2172
bus = bus)
2173
2174
special_settings = {
2175
# Some settings need to be accessd by special methods;
2176
# booleans need .getboolean(), etc. Here is a list of them:
2177
"approved_by_default":
2178
lambda section:
2179
client_config.getboolean(section, "approved_by_default"),
2180
}
2181
# Construct a new dict of client settings of this form:
2182
# { client_name: {setting_name: value, ...}, ...}
2183
# with exceptions for any special settings as defined above
2184
client_settings = dict((clientname,
2185
dict((setting,
2186
(value
2187
if setting not in special_settings
2188
else special_settings[setting]
2189
(clientname)))
2190
for setting, value in
2191
client_config.items(clientname)))
2192
for clientname in client_config.sections())
2193
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
2194
3210
old_client_settings = {}
2195
clients_data = []
2196
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
2197
3221
# Get client data and settings from last running state.
2198
3222
if server_settings["restore"]:
2199
3223
try:
2200
3224
with open(stored_state_path, "rb") as stored_state:
2201
clients_data, old_client_settings = (pickle.load
2202
(stored_state))
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2203
3274
os.remove(stored_state_path)
2204
3275
except IOError as e:
2205
logger.warning("Could not load persistent state: {0}"
2206
.format(e))
2207
if e.errno != errno.ENOENT:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2208
3282
raise
2209
2210
with Crypto() as crypt:
2211
for client in clients_data:
2212
client_name = client["name"]
2213
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
3288
with PGPEngine() as pgp:
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
2214
3294
# Decide which value to use after restoring saved state.
2215
3295
# We have three different values: Old config file,
2216
3296
# new config file, and saved state.
2221
3301
# For each value in new config, check if it
2222
3302
# differs from the old config value (Except for
2223
3303
# the "secret" attribute)
2224
if (name != "secret" and
2225
value != old_client_settings[client_name]
2226
[name]):
2227
setattr(client, name, value)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
2228
3308
except KeyError:
2229
3309
pass
2230
3310
2231
3311
# Clients who has passed its expire date can still be
2232
# enabled if its last checker was sucessful. Clients
2233
# whose checker failed before we stored its state is
2234
# assumed to have failed all checkers during downtime.
2235
if client["enabled"] and client["last_checked_ok"]:
2236
if ((datetime.datetime.utcnow()
2237
- client["last_checked_ok"])
2238
> client["interval"]):
2239
if client["last_checker_status"] != 0:
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
2240
3331
client["enabled"] = False
2241
3332
else:
2242
client["expires"] = (datetime.datetime
2243
.utcnow()
2244
+ client["timeout"])
2245
2246
client["changedstate"] = (multiprocessing_manager
2247
.Condition
2248
(multiprocessing_manager
2249
.Lock()))
2250
if use_dbus:
2251
new_client = (ClientDBusTransitional.__new__
2252
(ClientDBusTransitional))
2253
tcp_server.clients[client_name] = new_client
2254
new_client.bus = bus
2255
for name, value in client.iteritems():
2256
setattr(new_client, name, value)
2257
client_object_name = unicode(client_name).translate(
2258
{ord("."): ord("_"),
2259
ord("-"): ord("_")})
2260
new_client.dbus_object_path = (dbus.ObjectPath
2261
("/clients/"
2262
+ client_object_name))
2263
DBusObjectWithProperties.__init__(new_client,
2264
new_client.bus,
2265
new_client
2266
.dbus_object_path)
2267
else:
2268
tcp_server.clients[client_name] = (Client.__new__
2269
(Client))
2270
for name, value in client.iteritems():
2271
setattr(tcp_server.clients[client_name],
2272
name, value)
2273
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2274
3339
try:
2275
tcp_server.clients[client_name].secret = (
2276
crypt.decrypt(tcp_server.clients[client_name]
2277
.encrypted_secret,
2278
client_settings[client_name]
2279
["secret"]))
2280
except CryptoError:
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
3343
except PGPError:
2281
3344
# If decryption fails, we use secret from new settings
2282
tcp_server.clients[client_name].secret = (
2283
client_settings[client_name]["secret"])
2284
2285
# Create/remove clients based on new changes made to config
2286
for clientname in set(old_client_settings) - set(client_settings):
2287
del tcp_server.clients[clientname]
2288
for clientname in set(client_settings) - set(old_client_settings):
2289
tcp_server.clients[clientname] = (client_class(name
2290
= clientname,
2291
config =
2292
client_settings
2293
[clientname]))
2294
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
2295
3365
if not tcp_server.clients:
2296
3366
logger.warning("No clients defined")
2297
2298
if not debug:
2299
try:
2300
with pidfile:
2301
pid = os.getpid()
2302
pidfile.write(str(pid) + "\n".encode("utf-8"))
2303
del pidfile
2304
except IOError:
2305
logger.error("Could not write to file %r with PID %d",
2306
pidfilename, pid)
2307
except NameError:
2308
# "pidfile" was never created
2309
pass
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2310
3378
del pidfilename
2311
2312
signal.signal(signal.SIGINT, signal.SIG_IGN)
2313
2314
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2315
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2316
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2317
3384
if use_dbus:
2318
class MandosDBusService(dbus.service.Object):
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2319
3389
"""A D-Bus proxy object"""
3390
2320
3391
def __init__(self):
2321
3392
dbus.service.Object.__init__(self, bus, "/")
3393
2322
3394
_interface = "se.recompile.Mandos"
2323
3395
2324
3396
@dbus.service.signal(_interface, signature="o")
2325
3397
def ClientAdded(self, objpath):
2326
3398
"D-Bus signal"
2327
3399
pass
2328
3400
2329
3401
@dbus.service.signal(_interface, signature="ss")
2330
def ClientNotFound(self, fingerprint, address):
3402
def ClientNotFound(self, key_id, address):
2331
3403
"D-Bus signal"
2332
3404
pass
2333
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2334
3408
@dbus.service.signal(_interface, signature="os")
2335
3409
def ClientRemoved(self, objpath, name):
2336
3410
"D-Bus signal"
2337
3411
pass
2338
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2339
3415
@dbus.service.method(_interface, out_signature="ao")
2340
3416
def GetAllClients(self):
2341
3417
"D-Bus method"
2342
return dbus.Array(c.dbus_object_path
2343
for c in
2344
tcp_server.clients.itervalues())
2345
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2346
3423
@dbus.service.method(_interface,
2347
3424
out_signature="a{oa{sv}}")
2348
3425
def GetAllClientsWithProperties(self):
2349
3426
"D-Bus method"
2350
3427
return dbus.Dictionary(
2351
((c.dbus_object_path, c.GetAll(""))
2352
for c in tcp_server.clients.itervalues()),
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2353
3431
signature="oa{sv}")
2354
3432
2355
3433
@dbus.service.method(_interface, in_signature="o")
2356
3434
def RemoveClient(self, object_path):
2357
3435
"D-Bus method"
2358
for c in tcp_server.clients.itervalues():
3436
for c in tcp_server.clients.values():
2359
3437
if c.dbus_object_path == object_path:
2360
3438
del tcp_server.clients[c.name]
2361
3439
c.remove_from_connection()
2362
# Don't signal anything except ClientRemoved
3440
# Don't signal the disabling
2363
3441
c.disable(quiet=True)
2364
# Emit D-Bus signal
2365
self.ClientRemoved(object_path, c.name)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2366
3444
return
2367
3445
raise KeyError(object_path)
2368
3446
2369
3447
del _interface
2370
2371
class MandosDBusServiceTransitional(MandosDBusService):
2372
__metaclass__ = AlternateDBusNamesMetaclass
2373
mandos_dbus_service = MandosDBusServiceTransitional()
2374
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2375
3492
def cleanup():
2376
3493
"Cleanup function; run on exit"
2377
service.cleanup()
2378
2379
multiprocessing.active_children()
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2380
3499
if not (tcp_server.clients or client_settings):
2381
3500
return
2382
3501
2383
3502
# Store client before exiting. Secrets are encrypted with key
2384
3503
# based on what config file has. If config file is
2385
3504
# removed/edited, old secret will thus be unrecovable.
2386
clients = []
2387
with Crypto() as crypt:
2388
for client in tcp_server.clients.itervalues():
3505
clients = {}
3506
with PGPEngine() as pgp:
3507
for client in tcp_server.clients.values():
2389
3508
key = client_settings[client.name]["secret"]
2390
client.encrypted_secret = crypt.encrypt(client.secret,
2391
key)
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3510
key)
2392
3511
client_dict = {}
2393
2394
# A list of attributes that will not be stored when
2395
# shutting down.
2396
exclude = set(("bus", "changedstate", "secret"))
2397
for name, typ in (inspect.getmembers
2398
(dbus.service.Object)):
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
2399
3519
exclude.add(name)
2400
3520
2401
3521
client_dict["encrypted_secret"] = (client
2402
3522
.encrypted_secret)
2403
3523
for attr in client.client_structure:
2404
3524
if attr not in exclude:
2405
3525
client_dict[attr] = getattr(client, attr)
2406
2407
clients.append(client_dict)
3526
3527
clients[client.name] = client_dict
2408
3528
del client_settings[client.name]["secret"]
2409
3529
2410
3530
try:
2411
with os.fdopen(os.open(stored_state_path,
2412
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2413
0600), "wb") as stored_state:
2414
pickle.dump((clients, client_settings), stored_state)
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
2415
3541
except (IOError, OSError) as e:
2416
logger.warning("Could not save persistent state: {0}"
2417
.format(e))
2418
if e.errno not in (errno.ENOENT, errno.EACCES):
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2419
3553
raise
2420
3554
2421
3555
# Delete all clients, and settings from config
2422
3556
while tcp_server.clients:
2423
3557
name, client = tcp_server.clients.popitem()
2424
3558
if use_dbus:
2425
3559
client.remove_from_connection()
2426
# Don't signal anything except ClientRemoved
3560
# Don't signal the disabling
2427
3561
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
2428
3563
if use_dbus:
2429
# Emit D-Bus signal
2430
mandos_dbus_service.ClientRemoved(client
2431
.dbus_object_path,
2432
client.name)
3564
mandos_dbus_service.client_removed_signal(client)
2433
3565
client_settings.clear()
2434
3566
2435
3567
atexit.register(cleanup)
2436
2437
for client in tcp_server.clients.itervalues():
3568
3569
for client in tcp_server.clients.values():
2438
3570
if use_dbus:
2439
# Emit D-Bus signal
2440
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2441
3573
# Need to initiate checking of clients
2442
3574
if client.enabled:
2443
3575
client.init_checker()
2444
3576
2445
3577
tcp_server.enable()
2446
3578
tcp_server.server_activate()
2447
3579
2448
3580
# Find out what port we got
2449
service.port = tcp_server.socket.getsockname()[1]
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2450
3583
if use_ipv6:
2451
3584
logger.info("Now listening on address %r, port %d,"
2452
" flowinfo %d, scope_id %d"
2453
% tcp_server.socket.getsockname())
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2454
3587
else: # IPv4
2455
logger.info("Now listening on address %r, port %d"
2456
% tcp_server.socket.getsockname())
2457
2458
#service.interface = tcp_server.socket.getsockname()[3]
2459
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2460
3593
try:
2461
# From the Avahi example code
2462
try:
2463
service.activate()
2464
except dbus.exceptions.DBusException as error:
2465
logger.critical("DBusException: %s", error)
2466
cleanup()
2467
sys.exit(1)
2468
# End of Avahi example code
2469
2470
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2471
lambda *args, **kwargs:
2472
(tcp_server.handle_request
2473
(*args[2:], **kwargs) or True))
2474
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2475
3609
logger.debug("Starting main loop")
2476
3610
main_loop.run()
2477
3611
except AvahiError as error:
2478
logger.critical("AvahiError: %s", error)
3612
logger.critical("Avahi Error", exc_info=error)
2479
3613
cleanup()
2480
3614
sys.exit(1)
2481
3615
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0