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- Committer: Teddy Hogeborn
- Date: 2022-04-25 18:46:48 UTC
- mto: This revision was merged to the branch mainline in revision 1261.
- Revision ID: teddy@recompile.se-20220425184648-w9nas5qn94qcllum
Tags: version-1.8.15-1
Version 1.8.15-1
* Makefile (version): Change to "1.8.15".
* NEWS (Version 1.8.15): Add new entry.
* debian/changelog (1.8.15-1): - '' -
* Makefile (version): Change to "1.8.15".
* NEWS (Version 1.8.15): Add new entry.
* debian/changelog (1.8.15-1): - '' -
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
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
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
33
#
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
44
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
38
51
import socket
39
import argparse
40
52
import datetime
41
53
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
49
import sys
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
50
58
import re
51
import os
52
59
import signal
53
60
import subprocess
54
61
import atexit
55
62
import stat
56
import logging
57
63
import logging.handlers
58
64
import pwd
59
65
import contextlib
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
80
import random
81
import shlex
68
82
69
83
import dbus
70
84
import dbus.service
71
import gobject
72
import avahi
85
import gi
86
from gi.repository import GLib
73
87
from dbus.mainloop.glib import DBusGMainLoop
74
88
import ctypes
75
89
import ctypes.util
76
90
import xml.dom.minidom
77
91
import inspect
78
import GnuPGInterface
79
80
try:
92
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
81
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
123
except AttributeError:
83
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
84
127
from IN import SO_BINDTODEVICE
85
128
except ImportError:
86
SO_BINDTODEVICE = None
87
88
version = "1.5.1"
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.15"
89
147
stored_state_file = "clients.pickle"
90
148
91
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
95
152
96
153
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
100
156
except (OSError, AttributeError):
157
101
158
def if_nametoindex(interface):
102
159
"Get an interface index the hard way, i.e. using fcntl()"
103
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
161
with contextlib.closing(socket.socket()) as s:
105
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
165
return interface_index
111
166
112
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
113
184
def initlogger(debug, level=logging.WARNING):
114
185
"""init logger and add loglevel"""
115
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
116
191
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
121
196
if debug:
122
197
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)
128
logger.setLevel(level)
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
" [%(process)d]:"
200
" %(levelname)s:"
201
" %(message)s"))
202
log.addHandler(console)
203
log.setLevel(level)
129
204
130
205
131
206
class PGPError(Exception):
133
208
pass
134
209
135
210
136
class PGPEngine(object):
211
class PGPEngine:
137
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
138
214
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ["--batch",
228
"--homedir", self.tempdir,
229
"--force-mdc",
230
"--quiet"]
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
148
235
def __enter__(self):
149
236
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
237
238
def __exit__(self, exc_type, exc_value, traceback):
152
239
self._cleanup()
153
240
return False
154
241
155
242
def __del__(self):
156
243
self._cleanup()
157
244
158
245
def _cleanup(self):
159
246
if self.tempdir is not None:
160
247
# Delete contents of tempdir
161
248
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
249
topdown=False):
163
250
for filename in files:
164
251
os.remove(os.path.join(root, filename))
165
252
for dirname in dirs:
167
254
# Remove tempdir
168
255
os.rmdir(self.tempdir)
169
256
self.tempdir = None
170
257
171
258
def password_encode(self, password):
172
259
# Passphrase can not be empty and can not contain newlines or
173
260
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
176
269
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, "--symmetric",
276
"--passphrase-file",
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
191
285
return ciphertext
192
286
193
287
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, "--decrypt",
294
"--passphrase-file",
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
208
303
return decrypted_plaintext
209
304
210
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
211
331
212
332
class AvahiError(Exception):
213
333
def __init__(self, value, *args, **kwargs):
214
334
self.value = value
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
218
338
219
339
class AvahiServiceError(AvahiError):
220
340
pass
221
341
342
222
343
class AvahiGroupError(AvahiError):
223
344
pass
224
345
225
346
226
class AvahiService(object):
347
class AvahiService:
227
348
"""An Avahi (Zeroconf) service.
228
349
229
350
Attributes:
230
351
interface: integer; avahi.IF_UNSPEC or an interface index.
231
352
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
235
356
port: integer; what port to announce
236
357
TXT: list of strings; TXT record for the service
237
358
domain: string; Domain to publish on, default to .local if empty.
243
364
server: D-Bus Server
244
365
bus: dbus.SystemBus()
245
366
"""
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
249
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
250
379
self.interface = interface
251
380
self.name = name
252
381
self.type = servicetype
261
390
self.server = None
262
391
self.bus = bus
263
392
self.entry_group_state_changed_match = None
264
def rename(self):
393
394
def rename(self, remove=True):
265
395
"""Derived from the Avahi example code"""
266
396
if self.rename_count >= self.max_renames:
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
269
self.rename_count)
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
270
400
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
274
self.name)
275
self.remove()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
282
403
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
283
420
def remove(self):
284
421
"""Derived from the Avahi example code"""
285
422
if self.entry_group_state_changed_match is not None:
287
424
self.entry_group_state_changed_match = None
288
425
if self.group is not None:
289
426
self.group.Reset()
427
290
428
def add(self):
291
429
"""Derived from the Avahi example code"""
292
430
self.remove()
297
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
298
436
self.entry_group_state_changed_match = (
299
437
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
302
self.name, self.type)
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
303
441
self.group.AddService(
304
442
self.interface,
305
443
self.protocol,
309
447
dbus.UInt16(self.port),
310
448
avahi.string_array_to_txt_array(self.TXT))
311
449
self.group.Commit()
450
312
451
def entry_group_state_changed(self, state, error):
313
452
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
315
453
log.debug("Avahi entry group state change: %i", state)
454
316
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
456
log.debug("Zeroconf service established.")
318
457
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
458
log.info("Zeroconf service name collision.")
320
459
self.rename()
321
460
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
326
465
def cleanup(self):
327
466
"""Derived from the Avahi example code"""
328
467
if self.group is not None:
333
472
pass
334
473
self.group = None
335
474
self.remove()
475
336
476
def server_state_changed(self, state, error=None):
337
477
"""Derived from the Avahi example code"""
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
478
log.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
346
485
if state in bad_states:
347
486
if bad_states[state] is not None:
348
487
if error is None:
349
logger.error(bad_states[state])
488
log.error(bad_states[state])
350
489
else:
351
logger.error(bad_states[state] + ": %r", error)
490
log.error(bad_states[state] + ": %r", error)
352
491
self.cleanup()
353
492
elif state == avahi.SERVER_RUNNING:
354
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
355
504
else:
356
505
if error is None:
357
logger.debug("Unknown state: %r", state)
506
log.debug("Unknown state: %r", state)
358
507
else:
359
logger.debug("Unknown state: %r: %r", state, error)
508
log.debug("Unknown state: %r: %r", state, error)
509
360
510
def activate(self):
361
511
"""Derived from the Avahi example code"""
362
512
if self.server is None:
366
516
follow_name_owner_changes=True),
367
517
avahi.DBUS_INTERFACE_SERVER)
368
518
self.server.connect_to_signal("StateChanged",
369
self.server_state_changed)
519
self.server_state_changed)
370
520
self.server_state_changed(self.server.GetState())
371
521
522
372
523
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
524
def rename(self, *args, **kwargs):
374
525
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
380
531
return ret
381
532
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
class Client(object):
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class _session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(_session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
578
579
class _openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
389
875
"""A representation of a client host served by this server.
390
876
391
877
Attributes:
392
approved: bool(); 'None' if not yet approved/disapproved
878
approved: bool(); None if not yet approved/disapproved
393
879
approval_delay: datetime.timedelta(); Time to wait for approval
394
880
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
399
885
checker_command: string; External command which is run to check
400
886
if client lives. %() expansions are done at
401
887
runtime with vars(self) as dict, so that for
402
888
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
889
checker_initiator_tag: a GLib event source tag, or None
404
890
created: datetime.datetime(); (UTC) object creation
405
891
client_structure: Object describing what attributes a client has
406
892
and is used for storing the client at exit
407
893
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
894
disable_initiator_tag: a GLib event source tag, or None
409
895
enabled: bool()
410
896
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
412
900
host: string; available for use by the checker command
413
901
interval: datetime.timedelta(); How often to start a new checker
414
902
last_approval_request: datetime.datetime(); (UTC) or None
415
903
last_checked_ok: datetime.datetime(); (UTC) or None
416
904
last_checker_status: integer between 0 and 255 reflecting exit
417
905
status of last checker. -1 reflects crashed
418
checker, or None.
906
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
419
909
last_enabled: datetime.datetime(); (UTC) or None
420
910
name: string; from the config file, used in log messages and
421
911
D-Bus identifiers
426
916
runtime_expansions: Allowed attributes for runtime expansion.
427
917
expires: datetime.datetime(); time (UTC) when a client will be
428
918
disabled, or None
919
server_settings: The server_settings dict from main()
429
920
"""
430
921
431
922
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
434
926
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
445
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
453
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
460
938
461
939
@staticmethod
462
940
def config_parser(config):
470
948
for client_name in config.sections():
471
949
section = dict(config.items(client_name))
472
950
client = settings[client_name] = {}
473
951
474
952
client["host"] = section["host"]
475
953
# Reformat values from string types to Python types
476
954
client["approved_by_default"] = config.getboolean(
477
955
client_name, "approved_by_default")
478
956
client["enabled"] = config.getboolean(client_name,
479
957
"enabled")
480
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
481
964
client["fingerprint"] = (section["fingerprint"].upper()
482
965
.replace(" ", ""))
483
966
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
967
client["secret"] = codecs.decode(section["secret"]
968
.encode("utf-8"),
969
"base64")
485
970
elif "secfile" in section:
486
971
with open(os.path.expanduser(os.path.expandvars
487
972
(section["secfile"])),
488
973
"rb") as secfile:
489
974
client["secret"] = secfile.read()
490
975
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
976
raise TypeError("No secret or secfile for section {}"
977
.format(section))
493
978
client["timeout"] = string_to_delta(section["timeout"])
494
979
client["extended_timeout"] = string_to_delta(
495
980
section["extended_timeout"])
501
986
client["checker_command"] = section["checker"]
502
987
client["last_approval_request"] = None
503
988
client["last_checked_ok"] = None
504
client["last_checker_status"] = None
505
989
client["last_checker_status"] = -2
990
506
991
return settings
507
508
509
def __init__(self, settings, name = None):
510
"""Note: the 'checker' key in 'config' sets the
511
'checker_command' attribute and *not* the 'checker'
512
attribute."""
992
993
def __init__(self, settings, name=None, server_settings=None):
513
994
self.name = name
995
if server_settings is None:
996
server_settings = {}
997
self.server_settings = server_settings
514
998
# adding all client settings
515
for setting, value in settings.iteritems():
999
for setting, value in settings.items():
516
1000
setattr(self, setting, value)
517
1001
518
1002
if self.enabled:
519
1003
if not hasattr(self, "last_enabled"):
520
1004
self.last_enabled = datetime.datetime.utcnow()
524
1008
else:
525
1009
self.last_enabled = None
526
1010
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
529
# Uppercase and remove spaces from fingerprint for later
530
# comparison purposes with return value from the fingerprint()
531
# function
532
logger.debug(" Fingerprint: %s", self.fingerprint)
1011
1012
log.debug("Creating client %r", self.name)
1013
log.debug(" Key ID: %s", self.key_id)
1014
log.debug(" Fingerprint: %s", self.fingerprint)
533
1015
self.created = settings.get("created",
534
1016
datetime.datetime.utcnow())
535
1017
541
1023
self.current_checker_command = None
542
1024
self.approved = None
543
1025
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
1026
self.changedstate = multiprocessing_manager.Condition(
1027
multiprocessing_manager.Lock())
1028
self.client_structure = [attr
1029
for attr in self.__dict__.keys()
549
1030
if not attr.startswith("_")]
550
1031
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
1032
1033
for name, t in inspect.getmembers(
1034
type(self), lambda obj: isinstance(obj, property)):
556
1035
if not name.startswith("_"):
557
1036
self.client_structure.append(name)
558
1037
559
1038
# Send notice to process children that client state has changed
560
1039
def send_changedstate(self):
561
1040
with self.changedstate:
562
1041
self.changedstate.notify_all()
563
1042
564
1043
def enable(self):
565
1044
"""Start this client's checker and timeout hooks"""
566
1045
if getattr(self, "enabled", False):
567
1046
# Already enabled
568
1047
return
569
self.send_changedstate()
570
1048
self.expires = datetime.datetime.utcnow() + self.timeout
571
1049
self.enabled = True
572
1050
self.last_enabled = datetime.datetime.utcnow()
573
1051
self.init_checker()
574
1052
self.send_changedstate()
1053
575
1054
def disable(self, quiet=True):
576
1055
"""Disable this client."""
577
1056
if not getattr(self, "enabled", False):
578
1057
return False
579
1058
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1059
log.info("Disabling client %s", self.name)
1060
if getattr(self, "disable_initiator_tag", None) is not None:
1061
GLib.source_remove(self.disable_initiator_tag)
585
1062
self.disable_initiator_tag = None
586
1063
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1064
if getattr(self, "checker_initiator_tag", None) is not None:
1065
GLib.source_remove(self.checker_initiator_tag)
589
1066
self.checker_initiator_tag = None
590
1067
self.stop_checker()
591
1068
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
1069
if not quiet:
1070
self.send_changedstate()
1071
# Do not run this again if called by a GLib.timeout_add
593
1072
return False
594
1073
595
1074
def __del__(self):
596
1075
self.disable()
597
1076
598
1077
def init_checker(self):
599
1078
# Schedule a new checker to be started an 'interval' from now,
600
1079
# and every interval from then on.
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
self.start_checker))
1080
if self.checker_initiator_tag is not None:
1081
GLib.source_remove(self.checker_initiator_tag)
1082
self.checker_initiator_tag = GLib.timeout_add(
1083
random.randrange(int(self.interval.total_seconds() * 1000
1084
+ 1)),
1085
self.start_checker)
604
1086
# Schedule a disable() when 'timeout' has passed
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
self.disable))
1087
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = GLib.timeout_add(
1090
int(self.timeout.total_seconds() * 1000), self.disable)
608
1091
# Also start a new checker *right now*.
609
1092
self.start_checker()
610
611
def checker_callback(self, pid, condition, command):
1093
1094
def checker_callback(self, source, condition, connection,
1095
command):
612
1096
"""The checker has completed, so take appropriate actions."""
1097
# Read return code from connection (see call_pipe)
1098
returncode = connection.recv()
1099
connection.close()
1100
if self.checker is not None:
1101
self.checker.join()
613
1102
self.checker_callback_tag = None
614
1103
self.checker = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1104
1105
if returncode >= 0:
1106
self.last_checker_status = returncode
1107
self.last_checker_signal = None
617
1108
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
619
vars(self))
1109
log.info("Checker for %(name)s succeeded", vars(self))
620
1110
self.checked_ok()
621
1111
else:
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1112
log.info("Checker for %(name)s failed", vars(self))
624
1113
else:
625
1114
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
627
vars(self))
628
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
631
632
This should only be called when the client has been seen,
633
alive and well.
634
"""
1115
self.last_checker_signal = -returncode
1116
log.warning("Checker for %(name)s crashed?", vars(self))
1117
return False
1118
1119
def checked_ok(self):
1120
"""Assert that the client has been seen, alive and well."""
1121
self.last_checked_ok = datetime.datetime.utcnow()
1122
self.last_checker_status = 0
1123
self.last_checker_signal = None
1124
self.bump_timeout()
1125
1126
def bump_timeout(self, timeout=None):
1127
"""Bump up the timeout for this client."""
635
1128
if timeout is None:
636
1129
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
638
1130
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
1131
GLib.source_remove(self.disable_initiator_tag)
1132
self.disable_initiator_tag = None
640
1133
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1134
self.disable_initiator_tag = GLib.timeout_add(
1135
int(timeout.total_seconds() * 1000), self.disable)
644
1136
self.expires = datetime.datetime.utcnow() + timeout
645
1137
646
1138
def need_approval(self):
647
1139
self.last_approval_request = datetime.datetime.utcnow()
648
1140
649
1141
def start_checker(self):
650
1142
"""Start a new checker subprocess if one is not running.
651
1143
652
1144
If a checker already exists, leave it running and do
653
1145
nothing."""
654
1146
# The reason for not killing a running checker is that if we
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
1147
# did that, and if a checker (for some reason) started running
1148
# slowly and taking more than 'interval' time, then the client
1149
# would inevitably timeout, since no checker would get a
1150
# chance to run to completion. If we instead leave running
659
1151
# checkers alone, the checker would have to take more time
660
1152
# than 'timeout' for the client to be disabled, which is as it
661
1153
# should be.
662
663
# If a checker exists, make sure it is not a zombie
664
try:
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
669
raise error
670
else:
671
if pid:
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
1154
1155
if self.checker is not None and not self.checker.is_alive():
1156
log.warning("Checker was not alive; joining")
1157
self.checker.join()
1158
self.checker = None
676
1159
# Start a new checker if needed
677
1160
if self.checker is None:
1161
# Escape attributes for the shell
1162
escaped_attrs = {
1163
attr: shlex.quote(str(getattr(self, attr)))
1164
for attr in self.runtime_expansions}
678
1165
try:
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
681
except TypeError:
682
# Escape attributes for the shell
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
691
try:
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
1166
command = self.checker_command % escaped_attrs
1167
except TypeError as error:
1168
log.error('Could not format string "%s"',
1169
self.checker_command, exc_info=error)
1170
return True # Try again later
697
1171
self.current_checker_command = command
698
try:
699
logger.info("Starting checker %r for %s",
700
command, self.name)
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
706
close_fds=True,
707
shell=True, cwd="/")
708
self.checker_callback_tag = (gobject.child_watch_add
709
(self.checker.pid,
710
self.checker_callback,
711
data=command))
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
715
if pid:
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
720
error)
721
# Re-run this periodically if run by gobject.timeout_add
1172
log.info("Starting checker %r for %s", command, self.name)
1173
# We don't need to redirect stdout and stderr, since
1174
# in normal mode, that is already done by daemon(),
1175
# and in debug mode we don't want to. (Stdin is
1176
# always replaced by /dev/null.)
1177
# The exception is when not debugging but nevertheless
1178
# running in the foreground; use the previously
1179
# created wnull.
1180
popen_args = {"close_fds": True,
1181
"shell": True,
1182
"cwd": "/"}
1183
if (not self.server_settings["debug"]
1184
and self.server_settings["foreground"]):
1185
popen_args.update({"stdout": wnull,
1186
"stderr": wnull})
1187
pipe = multiprocessing.Pipe(duplex=False)
1188
self.checker = multiprocessing.Process(
1189
target=call_pipe,
1190
args=(pipe[1], subprocess.call, command),
1191
kwargs=popen_args)
1192
self.checker.start()
1193
self.checker_callback_tag = GLib.io_add_watch(
1194
GLib.IOChannel.unix_new(pipe[0].fileno()),
1195
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1196
self.checker_callback, pipe[0], command)
1197
# Re-run this periodically if run by GLib.timeout_add
722
1198
return True
723
1199
724
1200
def stop_checker(self):
725
1201
"""Force the checker process, if any, to stop."""
726
1202
if self.checker_callback_tag:
727
gobject.source_remove(self.checker_callback_tag)
1203
GLib.source_remove(self.checker_callback_tag)
728
1204
self.checker_callback_tag = None
729
1205
if getattr(self, "checker", None) is None:
730
1206
return
731
logger.debug("Stopping checker for %(name)s", vars(self))
732
try:
733
os.kill(self.checker.pid, signal.SIGTERM)
734
#time.sleep(0.5)
735
#if self.checker.poll() is None:
736
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
738
if error.errno != errno.ESRCH: # No such process
739
raise
1207
log.debug("Stopping checker for %(name)s", vars(self))
1208
self.checker.terminate()
740
1209
self.checker = None
741
1210
742
1211
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1212
def dbus_service_property(dbus_interface,
1213
signature="v",
1214
access="readwrite",
1215
byte_arrays=False):
745
1216
"""Decorators for marking methods of a DBusObjectWithProperties to
746
1217
become properties on the D-Bus.
747
1218
748
1219
The decorated method will be called with no arguments by "Get"
749
1220
and with one argument by "Set".
750
1221
751
1222
The parameters, where they are supported, are the same as
752
1223
dbus.service.method, except there is only "signature", since the
753
1224
type from Get() and the type sent to Set() is the same.
756
1227
# "Set" method, so we fail early here:
757
1228
if byte_arrays and signature != "ay":
758
1229
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
1230
" signature {!r}".format(signature))
1231
760
1232
def decorator(func):
761
1233
func._dbus_is_property = True
762
1234
func._dbus_interface = dbus_interface
765
1237
func._dbus_name = func.__name__
766
1238
if func._dbus_name.endswith("_dbus_property"):
767
1239
func._dbus_name = func._dbus_name[:-14]
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
return func
1240
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1241
return func
1242
1243
return decorator
1244
1245
1246
def dbus_interface_annotations(dbus_interface):
1247
"""Decorator for marking functions returning interface annotations
1248
1249
Usage:
1250
1251
@dbus_interface_annotations("org.example.Interface")
1252
def _foo(self): # Function name does not matter
1253
return {"org.freedesktop.DBus.Deprecated": "true",
1254
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1255
"false"}
1256
"""
1257
1258
def decorator(func):
1259
func._dbus_is_interface = True
1260
func._dbus_interface = dbus_interface
1261
func._dbus_name = dbus_interface
1262
return func
1263
1264
return decorator
1265
1266
1267
def dbus_annotations(annotations):
1268
"""Decorator to annotate D-Bus methods, signals or properties
1269
Usage:
1270
1271
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1272
"org.freedesktop.DBus.Property."
1273
"EmitsChangedSignal": "false"})
1274
@dbus_service_property("org.example.Interface", signature="b",
1275
access="r")
1276
def Property_dbus_property(self):
1277
return dbus.Boolean(False)
1278
1279
See also the DBusObjectWithAnnotations class.
1280
"""
1281
1282
def decorator(func):
1283
func._dbus_annotations = annotations
1284
return func
1285
770
1286
return decorator
771
1287
772
1288
773
1289
class DBusPropertyException(dbus.exceptions.DBusException):
774
1290
"""A base class for D-Bus property-related exceptions
775
1291
"""
776
def __unicode__(self):
777
return unicode(str(self))
1292
pass
778
1293
779
1294
780
1295
class DBusPropertyAccessException(DBusPropertyException):
789
1304
pass
790
1305
791
1306
792
class DBusObjectWithProperties(dbus.service.Object):
1307
class DBusObjectWithAnnotations(dbus.service.Object):
1308
"""A D-Bus object with annotations.
1309
1310
Classes inheriting from this can use the dbus_annotations
1311
decorator to add annotations to methods or signals.
1312
"""
1313
1314
@staticmethod
1315
def _is_dbus_thing(thing):
1316
"""Returns a function testing if an attribute is a D-Bus thing
1317
1318
If called like _is_dbus_thing("method") it returns a function
1319
suitable for use as predicate to inspect.getmembers().
1320
"""
1321
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1322
False)
1323
1324
def _get_all_dbus_things(self, thing):
1325
"""Returns a generator of (name, attribute) pairs
1326
"""
1327
return ((getattr(athing.__get__(self), "_dbus_name", name),
1328
athing.__get__(self))
1329
for cls in self.__class__.__mro__
1330
for name, athing in
1331
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1332
1333
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1334
out_signature="s",
1335
path_keyword="object_path",
1336
connection_keyword="connection")
1337
def Introspect(self, object_path, connection):
1338
"""Overloading of standard D-Bus method.
1339
1340
Inserts annotation tags on methods and signals.
1341
"""
1342
xmlstring = dbus.service.Object.Introspect(self, object_path,
1343
connection)
1344
try:
1345
document = xml.dom.minidom.parseString(xmlstring)
1346
1347
for if_tag in document.getElementsByTagName("interface"):
1348
# Add annotation tags
1349
for typ in ("method", "signal"):
1350
for tag in if_tag.getElementsByTagName(typ):
1351
annots = dict()
1352
for name, prop in (self.
1353
_get_all_dbus_things(typ)):
1354
if (name == tag.getAttribute("name")
1355
and prop._dbus_interface
1356
== if_tag.getAttribute("name")):
1357
annots.update(getattr(
1358
prop, "_dbus_annotations", {}))
1359
for name, value in annots.items():
1360
ann_tag = document.createElement(
1361
"annotation")
1362
ann_tag.setAttribute("name", name)
1363
ann_tag.setAttribute("value", value)
1364
tag.appendChild(ann_tag)
1365
# Add interface annotation tags
1366
for annotation, value in dict(
1367
itertools.chain.from_iterable(
1368
annotations().items()
1369
for name, annotations
1370
in self._get_all_dbus_things("interface")
1371
if name == if_tag.getAttribute("name")
1372
)).items():
1373
ann_tag = document.createElement("annotation")
1374
ann_tag.setAttribute("name", annotation)
1375
ann_tag.setAttribute("value", value)
1376
if_tag.appendChild(ann_tag)
1377
# Fix argument name for the Introspect method itself
1378
if (if_tag.getAttribute("name")
1379
== dbus.INTROSPECTABLE_IFACE):
1380
for cn in if_tag.getElementsByTagName("method"):
1381
if cn.getAttribute("name") == "Introspect":
1382
for arg in cn.getElementsByTagName("arg"):
1383
if (arg.getAttribute("direction")
1384
== "out"):
1385
arg.setAttribute("name",
1386
"xml_data")
1387
xmlstring = document.toxml("utf-8")
1388
document.unlink()
1389
except (AttributeError, xml.dom.DOMException,
1390
xml.parsers.expat.ExpatError) as error:
1391
log.error("Failed to override Introspection method",
1392
exc_info=error)
1393
return xmlstring
1394
1395
1396
class DBusObjectWithProperties(DBusObjectWithAnnotations):
793
1397
"""A D-Bus object with properties.
794
1398
795
1399
Classes inheriting from this can use the dbus_service_property
796
1400
decorator to expose methods as D-Bus properties. It exposes the
797
1401
standard Get(), Set(), and GetAll() methods on the D-Bus.
798
1402
"""
799
800
@staticmethod
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
803
804
def _get_all_dbus_properties(self):
805
"""Returns a generator of (name, attribute) pairs
806
"""
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
809
for name, prop in
810
inspect.getmembers(cls, self._is_dbus_property))
811
1403
812
1404
def _get_dbus_property(self, interface_name, property_name):
813
1405
"""Returns a bound method if one exists which is a D-Bus
814
1406
property with the specified name and interface.
815
1407
"""
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1408
for cls in self.__class__.__mro__:
1409
for name, value in inspect.getmembers(
1410
cls, self._is_dbus_thing("property")):
819
1411
if (value._dbus_name == property_name
820
1412
and value._dbus_interface == interface_name):
821
1413
return value.__get__(self)
822
1414
823
1415
# No such property
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
826
+ property_name)
827
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1416
raise DBusPropertyNotFound("{}:{}.{}".format(
1417
self.dbus_object_path, interface_name, property_name))
1418
1419
@classmethod
1420
def _get_all_interface_names(cls):
1421
"""Get a sequence of all interfaces supported by an object"""
1422
return (name for name in set(getattr(getattr(x, attr),
1423
"_dbus_interface", None)
1424
for x in (inspect.getmro(cls))
1425
for attr in dir(x))
1426
if name is not None)
1427
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
1429
in_signature="ss",
829
1430
out_signature="v")
830
1431
def Get(self, interface_name, property_name):
831
1432
"""Standard D-Bus property Get() method, see D-Bus standard.
837
1438
if not hasattr(value, "variant_level"):
838
1439
return value
839
1440
return type(value)(value, variant_level=value.variant_level+1)
840
1441
841
1442
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
842
1443
def Set(self, interface_name, property_name, value):
843
1444
"""Standard D-Bus property Set() method, see D-Bus standard.
849
1450
# The byte_arrays option is not supported yet on
850
1451
# signatures other than "ay".
851
1452
if prop._dbus_signature != "ay":
852
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
1453
raise ValueError("Byte arrays not supported for non-"
1454
"'ay' signature {!r}"
1455
.format(prop._dbus_signature))
1456
value = dbus.ByteArray(bytes(value))
855
1457
prop(value)
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1458
1459
@dbus.service.method(dbus.PROPERTIES_IFACE,
1460
in_signature="s",
858
1461
out_signature="a{sv}")
859
1462
def GetAll(self, interface_name):
860
1463
"""Standard D-Bus property GetAll() method, see D-Bus
861
1464
standard.
862
1465
863
1466
Note: Will not include properties with access="write".
864
1467
"""
865
1468
properties = {}
866
for name, prop in self._get_all_dbus_properties():
1469
for name, prop in self._get_all_dbus_things("property"):
867
1470
if (interface_name
868
1471
and interface_name != prop._dbus_interface):
869
1472
# Interface non-empty but did not match
875
1478
if not hasattr(value, "variant_level"):
876
1479
properties[name] = value
877
1480
continue
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1481
properties[name] = type(value)(
1482
value, variant_level=value.variant_level + 1)
880
1483
return dbus.Dictionary(properties, signature="sv")
881
1484
1485
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1486
def PropertiesChanged(self, interface_name, changed_properties,
1487
invalidated_properties):
1488
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1489
standard.
1490
"""
1491
pass
1492
882
1493
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
1494
out_signature="s",
884
path_keyword='object_path',
885
connection_keyword='connection')
1495
path_keyword="object_path",
1496
connection_keyword="connection")
886
1497
def Introspect(self, object_path, connection):
887
"""Standard D-Bus method, overloaded to insert property tags.
1498
"""Overloading of standard D-Bus method.
1499
1500
Inserts property tags and interface annotation tags.
888
1501
"""
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1502
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1503
object_path,
1504
connection)
891
1505
try:
892
1506
document = xml.dom.minidom.parseString(xmlstring)
1507
893
1508
def make_tag(document, name, prop):
894
1509
e = document.createElement("property")
895
1510
e.setAttribute("name", name)
896
1511
e.setAttribute("type", prop._dbus_signature)
897
1512
e.setAttribute("access", prop._dbus_access)
898
1513
return e
1514
899
1515
for if_tag in document.getElementsByTagName("interface"):
1516
# Add property tags
900
1517
for tag in (make_tag(document, name, prop)
901
1518
for name, prop
902
in self._get_all_dbus_properties()
1519
in self._get_all_dbus_things("property")
903
1520
if prop._dbus_interface
904
1521
== if_tag.getAttribute("name")):
905
1522
if_tag.appendChild(tag)
1523
# Add annotation tags for properties
1524
for tag in if_tag.getElementsByTagName("property"):
1525
annots = dict()
1526
for name, prop in self._get_all_dbus_things(
1527
"property"):
1528
if (name == tag.getAttribute("name")
1529
and prop._dbus_interface
1530
== if_tag.getAttribute("name")):
1531
annots.update(getattr(
1532
prop, "_dbus_annotations", {}))
1533
for name, value in annots.items():
1534
ann_tag = document.createElement(
1535
"annotation")
1536
ann_tag.setAttribute("name", name)
1537
ann_tag.setAttribute("value", value)
1538
tag.appendChild(ann_tag)
906
1539
# Add the names to the return values for the
907
1540
# "org.freedesktop.DBus.Properties" methods
908
1541
if (if_tag.getAttribute("name")
922
1555
document.unlink()
923
1556
except (AttributeError, xml.dom.DOMException,
924
1557
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
926
error)
927
return xmlstring
928
929
930
def datetime_to_dbus (dt, variant_level=0):
1558
log.error("Failed to override Introspection method",
1559
exc_info=error)
1560
return xmlstring
1561
1562
1563
try:
1564
dbus.OBJECT_MANAGER_IFACE
1565
except AttributeError:
1566
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1567
1568
1569
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1570
"""A D-Bus object with an ObjectManager.
1571
1572
Classes inheriting from this exposes the standard
1573
GetManagedObjects call and the InterfacesAdded and
1574
InterfacesRemoved signals on the standard
1575
"org.freedesktop.DBus.ObjectManager" interface.
1576
1577
Note: No signals are sent automatically; they must be sent
1578
manually.
1579
"""
1580
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1581
out_signature="a{oa{sa{sv}}}")
1582
def GetManagedObjects(self):
1583
"""This function must be overridden"""
1584
raise NotImplementedError()
1585
1586
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1587
signature="oa{sa{sv}}")
1588
def InterfacesAdded(self, object_path, interfaces_and_properties):
1589
pass
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1592
def InterfacesRemoved(self, object_path, interfaces):
1593
pass
1594
1595
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1596
out_signature="s",
1597
path_keyword="object_path",
1598
connection_keyword="connection")
1599
def Introspect(self, object_path, connection):
1600
"""Overloading of standard D-Bus method.
1601
1602
Override return argument name of GetManagedObjects to be
1603
"objpath_interfaces_and_properties"
1604
"""
1605
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1606
object_path,
1607
connection)
1608
try:
1609
document = xml.dom.minidom.parseString(xmlstring)
1610
1611
for if_tag in document.getElementsByTagName("interface"):
1612
# Fix argument name for the GetManagedObjects method
1613
if (if_tag.getAttribute("name")
1614
== dbus.OBJECT_MANAGER_IFACE):
1615
for cn in if_tag.getElementsByTagName("method"):
1616
if (cn.getAttribute("name")
1617
== "GetManagedObjects"):
1618
for arg in cn.getElementsByTagName("arg"):
1619
if (arg.getAttribute("direction")
1620
== "out"):
1621
arg.setAttribute(
1622
"name",
1623
"objpath_interfaces"
1624
"_and_properties")
1625
xmlstring = document.toxml("utf-8")
1626
document.unlink()
1627
except (AttributeError, xml.dom.DOMException,
1628
xml.parsers.expat.ExpatError) as error:
1629
log.error("Failed to override Introspection method",
1630
exc_info=error)
1631
return xmlstring
1632
1633
1634
def datetime_to_dbus(dt, variant_level=0):
931
1635
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
1636
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1637
return dbus.String("", variant_level=variant_level)
1638
return dbus.String(dt.isoformat(), variant_level=variant_level)
1639
1640
1641
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1642
"""A class decorator; applied to a subclass of
1643
dbus.service.Object, it will add alternate D-Bus attributes with
1644
interface names according to the "alt_interface_names" mapping.
1645
Usage:
1646
1647
@alternate_dbus_interfaces({"org.example.Interface":
1648
"net.example.AlternateInterface"})
1649
class SampleDBusObject(dbus.service.Object):
1650
@dbus.service.method("org.example.Interface")
1651
def SampleDBusMethod():
1652
pass
1653
1654
The above "SampleDBusMethod" on "SampleDBusObject" will be
1655
reachable via two interfaces: "org.example.Interface" and
1656
"net.example.AlternateInterface", the latter of which will have
1657
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1658
"true", unless "deprecate" is passed with a False value.
1659
1660
This works for methods and signals, and also for D-Bus properties
1661
(from DBusObjectWithProperties) and interfaces (from the
1662
dbus_interface_annotations decorator).
942
1663
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1664
1665
def wrapper(cls):
1666
for orig_interface_name, alt_interface_name in (
1667
alt_interface_names.items()):
1668
attr = {}
1669
interface_names = set()
1670
# Go though all attributes of the class
1671
for attrname, attribute in inspect.getmembers(cls):
950
1672
# Ignore non-D-Bus attributes, and D-Bus attributes
951
1673
# with the wrong interface name
952
1674
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1675
or not attribute._dbus_interface.startswith(
1676
orig_interface_name)):
955
1677
continue
956
1678
# Create an alternate D-Bus interface name based on
957
1679
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1680
alt_interface = attribute._dbus_interface.replace(
1681
orig_interface_name, alt_interface_name)
1682
interface_names.add(alt_interface)
961
1683
# Is this a D-Bus signal?
962
1684
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
1685
# Extract the original non-method undecorated
1686
# function by black magic
1687
if sys.version_info.major == 2:
1688
nonmethod_func = (dict(
966
1689
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
1690
attribute.__closure__))
1691
["func"].cell_contents)
1692
else:
1693
nonmethod_func = (dict(
1694
zip(attribute.__code__.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
969
1697
# Create a new, but exactly alike, function
970
1698
# object, and decorate it to be a new D-Bus signal
971
1699
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
1700
new_function = copy_function(nonmethod_func)
1701
new_function = (dbus.service.signal(
1702
alt_interface,
1703
attribute._dbus_signature)(new_function))
1704
# Copy annotations, if any
1705
try:
1706
new_function._dbus_annotations = dict(
1707
attribute._dbus_annotations)
1708
except AttributeError:
1709
pass
1710
981
1711
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1712
# original and alternate functions, so both the
1713
# original and alternate signals gets sent when
1714
# the function is called
984
1715
def fixscope(func1, func2):
985
1716
"""This function is a scope container to pass
986
1717
func1 and func2 to the "call_both" function
987
1718
outside of its arguments"""
1719
1720
@functools.wraps(func2)
988
1721
def call_both(*args, **kwargs):
989
1722
"""This function will emit two D-Bus
990
1723
signals by calling func1 and func2"""
991
1724
func1(*args, **kwargs)
992
1725
func2(*args, **kwargs)
1726
# Make wrapper function look like a D-Bus
1727
# signal
1728
for name, attr in inspect.getmembers(func2):
1729
if name.startswith("_dbus_"):
1730
setattr(call_both, name, attr)
1731
993
1732
return call_both
994
1733
# Create the "call_both" function and add it to
995
1734
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
1735
attr[attrname] = fixscope(attribute, new_function)
998
1736
# Is this a D-Bus method?
999
1737
elif getattr(attribute, "_dbus_is_method", False):
1000
1738
# Create a new, but exactly alike, function
1001
1739
# object. Decorate it to be a new D-Bus method
1002
1740
# with the alternate D-Bus interface name. Add it
1003
1741
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1742
attr[attrname] = (
1743
dbus.service.method(
1744
alt_interface,
1745
attribute._dbus_in_signature,
1746
attribute._dbus_out_signature)
1747
(copy_function(attribute)))
1748
# Copy annotations, if any
1749
try:
1750
attr[attrname]._dbus_annotations = dict(
1751
attribute._dbus_annotations)
1752
except AttributeError:
1753
pass
1014
1754
# Is this a D-Bus property?
1015
1755
elif getattr(attribute, "_dbus_is_property", False):
1016
1756
# Create a new, but exactly alike, function
1017
1757
# object, and decorate it to be a new D-Bus
1018
1758
# property with the alternate D-Bus interface
1019
1759
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
1760
attr[attrname] = (dbus_service_property(
1761
alt_interface, attribute._dbus_signature,
1762
attribute._dbus_access,
1763
attribute._dbus_get_args_options
1764
["byte_arrays"])
1765
(copy_function(attribute)))
1766
# Copy annotations, if any
1767
try:
1768
attr[attrname]._dbus_annotations = dict(
1769
attribute._dbus_annotations)
1770
except AttributeError:
1771
pass
1772
# Is this a D-Bus interface?
1773
elif getattr(attribute, "_dbus_is_interface", False):
1774
# Create a new, but exactly alike, function
1775
# object. Decorate it to be a new D-Bus interface
1776
# with the alternate D-Bus interface name. Add it
1777
# to the class.
1778
attr[attrname] = (
1779
dbus_interface_annotations(alt_interface)
1780
(copy_function(attribute)))
1781
if deprecate:
1782
# Deprecate all alternate interfaces
1783
iname = "_AlternateDBusNames_interface_annotation{}"
1784
for interface_name in interface_names:
1785
1786
@dbus_interface_annotations(interface_name)
1787
def func(self):
1788
return {"org.freedesktop.DBus.Deprecated":
1789
"true"}
1790
# Find an unused name
1791
for aname in (iname.format(i)
1792
for i in itertools.count()):
1793
if aname not in attr:
1794
attr[aname] = func
1795
break
1796
if interface_names:
1797
# Replace the class with a new subclass of it with
1798
# methods, signals, etc. as created above.
1799
if sys.version_info.major == 2:
1800
cls = type(b"{}Alternate".format(cls.__name__),
1801
(cls, ), attr)
1802
else:
1803
cls = type("{}Alternate".format(cls.__name__),
1804
(cls, ), attr)
1805
return cls
1806
1807
return wrapper
1808
1809
1810
@alternate_dbus_interfaces({"se.recompile.Mandos":
1811
"se.bsnet.fukt.Mandos"})
1036
1812
class ClientDBus(Client, DBusObjectWithProperties):
1037
1813
"""A Client class using D-Bus
1038
1814
1039
1815
Attributes:
1040
1816
dbus_object_path: dbus.ObjectPath
1041
1817
bus: dbus.SystemBus()
1042
1818
"""
1043
1819
1044
1820
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
1821
+ ("dbus_object_path", ))
1822
1823
_interface = "se.recompile.Mandos.Client"
1824
1047
1825
# dbus.service.Object doesn't use super(), so we can't either.
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1826
1827
def __init__(self, bus=None, *args, **kwargs):
1050
1828
self.bus = bus
1051
1829
Client.__init__(self, *args, **kwargs)
1052
1830
# Only now, when this client is initialized, can it show up on
1053
1831
# the D-Bus
1054
client_object_name = unicode(self.name).translate(
1832
client_object_name = str(self.name).translate(
1055
1833
{ord("."): ord("_"),
1056
1834
ord("-"): ord("_")})
1057
self.dbus_object_path = (dbus.ObjectPath
1058
("/clients/" + client_object_name))
1835
self.dbus_object_path = dbus.ObjectPath(
1836
"/clients/" + client_object_name)
1059
1837
DBusObjectWithProperties.__init__(self, self.bus,
1060
1838
self.dbus_object_path)
1061
1062
def notifychangeproperty(transform_func,
1063
dbus_name, type_func=lambda x: x,
1064
variant_level=1):
1839
1840
def notifychangeproperty(transform_func, dbus_name,
1841
type_func=lambda x: x,
1842
variant_level=1,
1843
invalidate_only=False,
1844
_interface=_interface):
1065
1845
""" Modify a variable so that it's a property which announces
1066
1846
its changes to DBus.
1067
1847
1068
1848
transform_fun: Function that takes a value and a variant_level
1069
1849
and transforms it to a D-Bus type.
1070
1850
dbus_name: D-Bus name of the variable
1072
1852
to the D-Bus. Default: no transform
1073
1853
variant_level: D-Bus variant level. Default: 1
1074
1854
"""
1075
attrname = "_{0}".format(dbus_name)
1855
attrname = "_{}".format(dbus_name)
1856
1076
1857
def setter(self, value):
1077
1858
if hasattr(self, "dbus_object_path"):
1078
1859
if (not hasattr(self, attrname) or
1079
1860
type_func(getattr(self, attrname, None))
1080
1861
!= type_func(value)):
1081
dbus_value = transform_func(type_func(value),
1082
variant_level
1083
=variant_level)
1084
self.PropertyChanged(dbus.String(dbus_name),
1085
dbus_value)
1862
if invalidate_only:
1863
self.PropertiesChanged(
1864
_interface, dbus.Dictionary(),
1865
dbus.Array((dbus_name, )))
1866
else:
1867
dbus_value = transform_func(
1868
type_func(value),
1869
variant_level=variant_level)
1870
self.PropertyChanged(dbus.String(dbus_name),
1871
dbus_value)
1872
self.PropertiesChanged(
1873
_interface,
1874
dbus.Dictionary({dbus.String(dbus_name):
1875
dbus_value}),
1876
dbus.Array())
1086
1877
setattr(self, attrname, value)
1087
1878
1088
1879
return property(lambda self: getattr(self, attrname), setter)
1089
1090
1880
1091
1881
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1092
1882
approvals_pending = notifychangeproperty(dbus.Boolean,
1093
1883
"ApprovalPending",
1094
type_func = bool)
1884
type_func=bool)
1095
1885
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1096
1886
last_enabled = notifychangeproperty(datetime_to_dbus,
1097
1887
"LastEnabled")
1098
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1099
type_func = lambda checker:
1100
checker is not None)
1888
checker = notifychangeproperty(
1889
dbus.Boolean, "CheckerRunning",
1890
type_func=lambda checker: checker is not None)
1101
1891
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1102
1892
"LastCheckedOK")
1893
last_checker_status = notifychangeproperty(dbus.Int16,
1894
"LastCheckerStatus")
1103
1895
last_approval_request = notifychangeproperty(
1104
1896
datetime_to_dbus, "LastApprovalRequest")
1105
1897
approved_by_default = notifychangeproperty(dbus.Boolean,
1106
1898
"ApprovedByDefault")
1107
approval_delay = notifychangeproperty(dbus.UInt64,
1108
"ApprovalDelay",
1109
type_func =
1110
timedelta_to_milliseconds)
1899
approval_delay = notifychangeproperty(
1900
dbus.UInt64, "ApprovalDelay",
1901
type_func=lambda td: td.total_seconds() * 1000)
1111
1902
approval_duration = notifychangeproperty(
1112
1903
dbus.UInt64, "ApprovalDuration",
1113
type_func = timedelta_to_milliseconds)
1904
type_func=lambda td: td.total_seconds() * 1000)
1114
1905
host = notifychangeproperty(dbus.String, "Host")
1115
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1116
type_func =
1117
timedelta_to_milliseconds)
1906
timeout = notifychangeproperty(
1907
dbus.UInt64, "Timeout",
1908
type_func=lambda td: td.total_seconds() * 1000)
1118
1909
extended_timeout = notifychangeproperty(
1119
1910
dbus.UInt64, "ExtendedTimeout",
1120
type_func = timedelta_to_milliseconds)
1121
interval = notifychangeproperty(dbus.UInt64,
1122
"Interval",
1123
type_func =
1124
timedelta_to_milliseconds)
1911
type_func=lambda td: td.total_seconds() * 1000)
1912
interval = notifychangeproperty(
1913
dbus.UInt64, "Interval",
1914
type_func=lambda td: td.total_seconds() * 1000)
1125
1915
checker_command = notifychangeproperty(dbus.String, "Checker")
1126
1916
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1917
invalidate_only=True)
1918
1127
1919
del notifychangeproperty
1128
1920
1129
1921
def __del__(self, *args, **kwargs):
1130
1922
try:
1131
1923
self.remove_from_connection()
1134
1926
if hasattr(DBusObjectWithProperties, "__del__"):
1135
1927
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1136
1928
Client.__del__(self, *args, **kwargs)
1137
1138
def checker_callback(self, pid, condition, command,
1139
*args, **kwargs):
1140
self.checker_callback_tag = None
1141
self.checker = None
1142
if os.WIFEXITED(condition):
1143
exitstatus = os.WEXITSTATUS(condition)
1929
1930
def checker_callback(self, source, condition,
1931
connection, command, *args, **kwargs):
1932
ret = Client.checker_callback(self, source, condition,
1933
connection, command, *args,
1934
**kwargs)
1935
exitstatus = self.last_checker_status
1936
if exitstatus >= 0:
1144
1937
# Emit D-Bus signal
1145
1938
self.CheckerCompleted(dbus.Int16(exitstatus),
1146
dbus.Int64(condition),
1939
# This is specific to GNU libC
1940
dbus.Int64(exitstatus << 8),
1147
1941
dbus.String(command))
1148
1942
else:
1149
1943
# Emit D-Bus signal
1150
1944
self.CheckerCompleted(dbus.Int16(-1),
1151
dbus.Int64(condition),
1945
dbus.Int64(
1946
# This is specific to GNU libC
1947
(exitstatus << 8)
1948
| self.last_checker_signal),
1152
1949
dbus.String(command))
1153
1154
return Client.checker_callback(self, pid, condition, command,
1155
*args, **kwargs)
1156
1950
return ret
1951
1157
1952
def start_checker(self, *args, **kwargs):
1158
old_checker = self.checker
1159
if self.checker is not None:
1160
old_checker_pid = self.checker.pid
1161
else:
1162
old_checker_pid = None
1953
old_checker_pid = getattr(self.checker, "pid", None)
1163
1954
r = Client.start_checker(self, *args, **kwargs)
1164
1955
# Only if new checker process was started
1165
1956
if (self.checker is not None
1167
1958
# Emit D-Bus signal
1168
1959
self.CheckerStarted(self.current_checker_command)
1169
1960
return r
1170
1961
1171
1962
def _reset_approved(self):
1172
1963
self.approved = None
1173
1964
return False
1174
1965
1175
1966
def approve(self, value=True):
1176
self.send_changedstate()
1177
1967
self.approved = value
1178
gobject.timeout_add(timedelta_to_milliseconds
1179
(self.approval_duration),
1180
self._reset_approved)
1181
1182
1183
## D-Bus methods, signals & properties
1184
_interface = "se.recompile.Mandos.Client"
1185
1186
## Signals
1187
1968
GLib.timeout_add(int(self.approval_duration.total_seconds()
1969
* 1000), self._reset_approved)
1970
self.send_changedstate()
1971
1972
# D-Bus methods, signals & properties
1973
1974
# Interfaces
1975
1976
# Signals
1977
1188
1978
# CheckerCompleted - signal
1189
1979
@dbus.service.signal(_interface, signature="nxs")
1190
1980
def CheckerCompleted(self, exitcode, waitstatus, command):
1191
1981
"D-Bus signal"
1192
1982
pass
1193
1983
1194
1984
# CheckerStarted - signal
1195
1985
@dbus.service.signal(_interface, signature="s")
1196
1986
def CheckerStarted(self, command):
1197
1987
"D-Bus signal"
1198
1988
pass
1199
1989
1200
1990
# PropertyChanged - signal
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1201
1992
@dbus.service.signal(_interface, signature="sv")
1202
1993
def PropertyChanged(self, property, value):
1203
1994
"D-Bus signal"
1204
1995
pass
1205
1996
1206
1997
# GotSecret - signal
1207
1998
@dbus.service.signal(_interface)
1208
1999
def GotSecret(self):
1211
2002
server to mandos-client
1212
2003
"""
1213
2004
pass
1214
2005
1215
2006
# Rejected - signal
1216
2007
@dbus.service.signal(_interface, signature="s")
1217
2008
def Rejected(self, reason):
1218
2009
"D-Bus signal"
1219
2010
pass
1220
2011
1221
2012
# NeedApproval - signal
1222
2013
@dbus.service.signal(_interface, signature="tb")
1223
2014
def NeedApproval(self, timeout, default):
1224
2015
"D-Bus signal"
1225
2016
return self.need_approval()
1226
1227
## Methods
1228
2017
2018
# Methods
2019
1229
2020
# Approve - method
1230
2021
@dbus.service.method(_interface, in_signature="b")
1231
2022
def Approve(self, value):
1232
2023
self.approve(value)
1233
2024
1234
2025
# CheckedOK - method
1235
2026
@dbus.service.method(_interface)
1236
2027
def CheckedOK(self):
1237
2028
self.checked_ok()
1238
2029
1239
2030
# Enable - method
2031
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1240
2032
@dbus.service.method(_interface)
1241
2033
def Enable(self):
1242
2034
"D-Bus method"
1243
2035
self.enable()
1244
2036
1245
2037
# StartChecker - method
2038
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1246
2039
@dbus.service.method(_interface)
1247
2040
def StartChecker(self):
1248
2041
"D-Bus method"
1249
2042
self.start_checker()
1250
2043
1251
2044
# Disable - method
2045
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1252
2046
@dbus.service.method(_interface)
1253
2047
def Disable(self):
1254
2048
"D-Bus method"
1255
2049
self.disable()
1256
2050
1257
2051
# StopChecker - method
2052
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1258
2053
@dbus.service.method(_interface)
1259
2054
def StopChecker(self):
1260
2055
self.stop_checker()
1261
1262
## Properties
1263
2056
2057
# Properties
2058
1264
2059
# ApprovalPending - property
1265
2060
@dbus_service_property(_interface, signature="b", access="read")
1266
2061
def ApprovalPending_dbus_property(self):
1267
2062
return dbus.Boolean(bool(self.approvals_pending))
1268
2063
1269
2064
# ApprovedByDefault - property
1270
@dbus_service_property(_interface, signature="b",
2065
@dbus_service_property(_interface,
2066
signature="b",
1271
2067
access="readwrite")
1272
2068
def ApprovedByDefault_dbus_property(self, value=None):
1273
2069
if value is None: # get
1274
2070
return dbus.Boolean(self.approved_by_default)
1275
2071
self.approved_by_default = bool(value)
1276
2072
1277
2073
# ApprovalDelay - property
1278
@dbus_service_property(_interface, signature="t",
2074
@dbus_service_property(_interface,
2075
signature="t",
1279
2076
access="readwrite")
1280
2077
def ApprovalDelay_dbus_property(self, value=None):
1281
2078
if value is None: # get
1282
return dbus.UInt64(self.approval_delay_milliseconds())
2079
return dbus.UInt64(self.approval_delay.total_seconds()
2080
* 1000)
1283
2081
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1284
2082
1285
2083
# ApprovalDuration - property
1286
@dbus_service_property(_interface, signature="t",
2084
@dbus_service_property(_interface,
2085
signature="t",
1287
2086
access="readwrite")
1288
2087
def ApprovalDuration_dbus_property(self, value=None):
1289
2088
if value is None: # get
1290
return dbus.UInt64(timedelta_to_milliseconds(
1291
self.approval_duration))
2089
return dbus.UInt64(self.approval_duration.total_seconds()
2090
* 1000)
1292
2091
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1293
2092
1294
2093
# Name - property
2094
@dbus_annotations(
2095
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1295
2096
@dbus_service_property(_interface, signature="s", access="read")
1296
2097
def Name_dbus_property(self):
1297
2098
return dbus.String(self.name)
1298
2099
2100
# KeyID - property
2101
@dbus_annotations(
2102
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2103
@dbus_service_property(_interface, signature="s", access="read")
2104
def KeyID_dbus_property(self):
2105
return dbus.String(self.key_id)
2106
1299
2107
# Fingerprint - property
2108
@dbus_annotations(
2109
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1300
2110
@dbus_service_property(_interface, signature="s", access="read")
1301
2111
def Fingerprint_dbus_property(self):
1302
2112
return dbus.String(self.fingerprint)
1303
2113
1304
2114
# Host - property
1305
@dbus_service_property(_interface, signature="s",
2115
@dbus_service_property(_interface,
2116
signature="s",
1306
2117
access="readwrite")
1307
2118
def Host_dbus_property(self, value=None):
1308
2119
if value is None: # get
1309
2120
return dbus.String(self.host)
1310
self.host = unicode(value)
1311
2121
self.host = str(value)
2122
1312
2123
# Created - property
2124
@dbus_annotations(
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1313
2126
@dbus_service_property(_interface, signature="s", access="read")
1314
2127
def Created_dbus_property(self):
1315
2128
return datetime_to_dbus(self.created)
1316
2129
1317
2130
# LastEnabled - property
1318
2131
@dbus_service_property(_interface, signature="s", access="read")
1319
2132
def LastEnabled_dbus_property(self):
1320
2133
return datetime_to_dbus(self.last_enabled)
1321
2134
1322
2135
# Enabled - property
1323
@dbus_service_property(_interface, signature="b",
2136
@dbus_service_property(_interface,
2137
signature="b",
1324
2138
access="readwrite")
1325
2139
def Enabled_dbus_property(self, value=None):
1326
2140
if value is None: # get
1329
2143
self.enable()
1330
2144
else:
1331
2145
self.disable()
1332
2146
1333
2147
# LastCheckedOK - property
1334
@dbus_service_property(_interface, signature="s",
2148
@dbus_service_property(_interface,
2149
signature="s",
1335
2150
access="readwrite")
1336
2151
def LastCheckedOK_dbus_property(self, value=None):
1337
2152
if value is not None:
1338
2153
self.checked_ok()
1339
2154
return
1340
2155
return datetime_to_dbus(self.last_checked_ok)
1341
2156
2157
# LastCheckerStatus - property
2158
@dbus_service_property(_interface, signature="n", access="read")
2159
def LastCheckerStatus_dbus_property(self):
2160
return dbus.Int16(self.last_checker_status)
2161
1342
2162
# Expires - property
1343
2163
@dbus_service_property(_interface, signature="s", access="read")
1344
2164
def Expires_dbus_property(self):
1345
2165
return datetime_to_dbus(self.expires)
1346
2166
1347
2167
# LastApprovalRequest - property
1348
2168
@dbus_service_property(_interface, signature="s", access="read")
1349
2169
def LastApprovalRequest_dbus_property(self):
1350
2170
return datetime_to_dbus(self.last_approval_request)
1351
2171
1352
2172
# Timeout - property
1353
@dbus_service_property(_interface, signature="t",
2173
@dbus_service_property(_interface,
2174
signature="t",
1354
2175
access="readwrite")
1355
2176
def Timeout_dbus_property(self, value=None):
1356
2177
if value is None: # get
1357
return dbus.UInt64(self.timeout_milliseconds())
2178
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2179
old_timeout = self.timeout
1358
2180
self.timeout = datetime.timedelta(0, 0, 0, value)
1359
# Reschedule timeout
2181
# Reschedule disabling
1360
2182
if self.enabled:
1361
2183
now = datetime.datetime.utcnow()
1362
time_to_die = timedelta_to_milliseconds(
1363
(self.last_checked_ok + self.timeout) - now)
1364
if time_to_die <= 0:
2184
self.expires += self.timeout - old_timeout
2185
if self.expires <= now:
1365
2186
# The timeout has passed
1366
2187
self.disable()
1367
2188
else:
1368
self.expires = (now +
1369
datetime.timedelta(milliseconds =
1370
time_to_die))
1371
2189
if (getattr(self, "disable_initiator_tag", None)
1372
2190
is None):
1373
2191
return
1374
gobject.source_remove(self.disable_initiator_tag)
1375
self.disable_initiator_tag = (gobject.timeout_add
1376
(time_to_die,
1377
self.disable))
1378
2192
GLib.source_remove(self.disable_initiator_tag)
2193
self.disable_initiator_tag = GLib.timeout_add(
2194
int((self.expires - now).total_seconds() * 1000),
2195
self.disable)
2196
1379
2197
# ExtendedTimeout - property
1380
@dbus_service_property(_interface, signature="t",
2198
@dbus_service_property(_interface,
2199
signature="t",
1381
2200
access="readwrite")
1382
2201
def ExtendedTimeout_dbus_property(self, value=None):
1383
2202
if value is None: # get
1384
return dbus.UInt64(self.extended_timeout_milliseconds())
2203
return dbus.UInt64(self.extended_timeout.total_seconds()
2204
* 1000)
1385
2205
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1386
2206
1387
2207
# Interval - property
1388
@dbus_service_property(_interface, signature="t",
2208
@dbus_service_property(_interface,
2209
signature="t",
1389
2210
access="readwrite")
1390
2211
def Interval_dbus_property(self, value=None):
1391
2212
if value is None: # get
1392
return dbus.UInt64(self.interval_milliseconds())
2213
return dbus.UInt64(self.interval.total_seconds() * 1000)
1393
2214
self.interval = datetime.timedelta(0, 0, 0, value)
1394
2215
if getattr(self, "checker_initiator_tag", None) is None:
1395
2216
return
1396
2217
if self.enabled:
1397
2218
# Reschedule checker run
1398
gobject.source_remove(self.checker_initiator_tag)
1399
self.checker_initiator_tag = (gobject.timeout_add
1400
(value, self.start_checker))
1401
self.start_checker() # Start one now, too
1402
2219
GLib.source_remove(self.checker_initiator_tag)
2220
self.checker_initiator_tag = GLib.timeout_add(
2221
value, self.start_checker)
2222
self.start_checker() # Start one now, too
2223
1403
2224
# Checker - property
1404
@dbus_service_property(_interface, signature="s",
2225
@dbus_service_property(_interface,
2226
signature="s",
1405
2227
access="readwrite")
1406
2228
def Checker_dbus_property(self, value=None):
1407
2229
if value is None: # get
1408
2230
return dbus.String(self.checker_command)
1409
self.checker_command = unicode(value)
1410
2231
self.checker_command = str(value)
2232
1411
2233
# CheckerRunning - property
1412
@dbus_service_property(_interface, signature="b",
2234
@dbus_service_property(_interface,
2235
signature="b",
1413
2236
access="readwrite")
1414
2237
def CheckerRunning_dbus_property(self, value=None):
1415
2238
if value is None: # get
1418
2241
self.start_checker()
1419
2242
else:
1420
2243
self.stop_checker()
1421
2244
1422
2245
# ObjectPath - property
2246
@dbus_annotations(
2247
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2248
"org.freedesktop.DBus.Deprecated": "true"})
1423
2249
@dbus_service_property(_interface, signature="o", access="read")
1424
2250
def ObjectPath_dbus_property(self):
1425
return self.dbus_object_path # is already a dbus.ObjectPath
1426
2251
return self.dbus_object_path # is already a dbus.ObjectPath
2252
1427
2253
# Secret = property
1428
@dbus_service_property(_interface, signature="ay",
1429
access="write", byte_arrays=True)
2254
@dbus_annotations(
2255
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2256
"invalidates"})
2257
@dbus_service_property(_interface,
2258
signature="ay",
2259
access="write",
2260
byte_arrays=True)
1430
2261
def Secret_dbus_property(self, value):
1431
self.secret = str(value)
1432
2262
self.secret = bytes(value)
2263
1433
2264
del _interface
1434
2265
1435
2266
1436
class ProxyClient(object):
1437
def __init__(self, child_pipe, fpr, address):
2267
class ProxyClient:
2268
def __init__(self, child_pipe, key_id, fpr, address):
1438
2269
self._pipe = child_pipe
1439
self._pipe.send(('init', fpr, address))
2270
self._pipe.send(("init", key_id, fpr, address))
1440
2271
if not self._pipe.recv():
1441
raise KeyError()
1442
2272
raise KeyError(key_id or fpr)
2273
1443
2274
def __getattribute__(self, name):
1444
if name == '_pipe':
2275
if name == "_pipe":
1445
2276
return super(ProxyClient, self).__getattribute__(name)
1446
self._pipe.send(('getattr', name))
2277
self._pipe.send(("getattr", name))
1447
2278
data = self._pipe.recv()
1448
if data[0] == 'data':
2279
if data[0] == "data":
1449
2280
return data[1]
1450
if data[0] == 'function':
2281
if data[0] == "function":
2282
1451
2283
def func(*args, **kwargs):
1452
self._pipe.send(('funcall', name, args, kwargs))
2284
self._pipe.send(("funcall", name, args, kwargs))
1453
2285
return self._pipe.recv()[1]
2286
1454
2287
return func
1455
2288
1456
2289
def __setattr__(self, name, value):
1457
if name == '_pipe':
2290
if name == "_pipe":
1458
2291
return super(ProxyClient, self).__setattr__(name, value)
1459
self._pipe.send(('setattr', name, value))
1460
1461
1462
class ClientDBusTransitional(ClientDBus):
1463
__metaclass__ = AlternateDBusNamesMetaclass
2292
self._pipe.send(("setattr", name, value))
1464
2293
1465
2294
1466
2295
class ClientHandler(socketserver.BaseRequestHandler, object):
1467
2296
"""A class to handle client connections.
1468
2297
1469
2298
Instantiated once for each connection to handle it.
1470
2299
Note: This will run in its own forked process."""
1471
2300
1472
2301
def handle(self):
1473
2302
with contextlib.closing(self.server.child_pipe) as child_pipe:
1474
logger.info("TCP connection from: %s",
1475
unicode(self.client_address))
1476
logger.debug("Pipe FD: %d",
1477
self.server.child_pipe.fileno())
1478
1479
session = (gnutls.connection
1480
.ClientSession(self.request,
1481
gnutls.connection
1482
.X509Credentials()))
1483
1484
# Note: gnutls.connection.X509Credentials is really a
1485
# generic GnuTLS certificate credentials object so long as
1486
# no X.509 keys are added to it. Therefore, we can use it
1487
# here despite using OpenPGP certificates.
1488
1489
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1490
# "+AES-256-CBC", "+SHA1",
1491
# "+COMP-NULL", "+CTYPE-OPENPGP",
1492
# "+DHE-DSS"))
2303
log.info("TCP connection from: %s",
2304
str(self.client_address))
2305
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2306
2307
session = gnutls.ClientSession(self.request)
2308
2309
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2310
# "+AES-256-CBC", "+SHA1",
2311
# "+COMP-NULL", "+CTYPE-OPENPGP",
2312
# "+DHE-DSS"))
1493
2313
# Use a fallback default, since this MUST be set.
1494
2314
priority = self.server.gnutls_priority
1495
2315
if priority is None:
1496
2316
priority = "NORMAL"
1497
(gnutls.library.functions
1498
.gnutls_priority_set_direct(session._c_object,
1499
priority, None))
1500
2317
gnutls.priority_set_direct(session,
2318
priority.encode("utf-8"), None)
2319
1501
2320
# Start communication using the Mandos protocol
1502
2321
# Get protocol number
1503
2322
line = self.request.makefile().readline()
1504
logger.debug("Protocol version: %r", line)
2323
log.debug("Protocol version: %r", line)
1505
2324
try:
1506
2325
if int(line.strip().split()[0]) > 1:
1507
raise RuntimeError
2326
raise RuntimeError(line)
1508
2327
except (ValueError, IndexError, RuntimeError) as error:
1509
logger.error("Unknown protocol version: %s", error)
2328
log.error("Unknown protocol version: %s", error)
1510
2329
return
1511
2330
1512
2331
# Start GnuTLS connection
1513
2332
try:
1514
2333
session.handshake()
1515
except gnutls.errors.GNUTLSError as error:
1516
logger.warning("Handshake failed: %s", error)
2334
except gnutls.Error as error:
2335
log.warning("Handshake failed: %s", error)
1517
2336
# Do not run session.bye() here: the session is not
1518
2337
# established. Just abandon the request.
1519
2338
return
1520
logger.debug("Handshake succeeded")
1521
2339
log.debug("Handshake succeeded")
2340
1522
2341
approval_required = False
1523
2342
try:
1524
try:
1525
fpr = self.fingerprint(self.peer_certificate
1526
(session))
1527
except (TypeError,
1528
gnutls.errors.GNUTLSError) as error:
1529
logger.warning("Bad certificate: %s", error)
1530
return
1531
logger.debug("Fingerprint: %s", fpr)
1532
1533
try:
1534
client = ProxyClient(child_pipe, fpr,
2343
if gnutls.has_rawpk:
2344
fpr = b""
2345
try:
2346
key_id = self.key_id(
2347
self.peer_certificate(session))
2348
except (TypeError, gnutls.Error) as error:
2349
log.warning("Bad certificate: %s", error)
2350
return
2351
log.debug("Key ID: %s",
2352
key_id.decode("utf-8",
2353
errors="replace"))
2354
2355
else:
2356
key_id = b""
2357
try:
2358
fpr = self.fingerprint(
2359
self.peer_certificate(session))
2360
except (TypeError, gnutls.Error) as error:
2361
log.warning("Bad certificate: %s", error)
2362
return
2363
log.debug("Fingerprint: %s", fpr)
2364
2365
try:
2366
client = ProxyClient(child_pipe, key_id, fpr,
1535
2367
self.client_address)
1536
2368
except KeyError:
1537
2369
return
1538
2370
1539
2371
if client.approval_delay:
1540
2372
delay = client.approval_delay
1541
2373
client.approvals_pending += 1
1542
2374
approval_required = True
1543
2375
1544
2376
while True:
1545
2377
if not client.enabled:
1546
logger.info("Client %s is disabled",
1547
client.name)
2378
log.info("Client %s is disabled", client.name)
1548
2379
if self.server.use_dbus:
1549
2380
# Emit D-Bus signal
1550
2381
client.Rejected("Disabled")
1551
2382
return
1552
2383
1553
2384
if client.approved or not client.approval_delay:
1554
#We are approved or approval is disabled
2385
# We are approved or approval is disabled
1555
2386
break
1556
2387
elif client.approved is None:
1557
logger.info("Client %s needs approval",
2388
log.info("Client %s needs approval",
2389
client.name)
2390
if self.server.use_dbus:
2391
# Emit D-Bus signal
2392
client.NeedApproval(
2393
client.approval_delay.total_seconds()
2394
* 1000, client.approved_by_default)
2395
else:
2396
log.warning("Client %s was not approved",
1558
2397
client.name)
1559
2398
if self.server.use_dbus:
1560
2399
# Emit D-Bus signal
1561
client.NeedApproval(
1562
client.approval_delay_milliseconds(),
1563
client.approved_by_default)
1564
else:
1565
logger.warning("Client %s was not approved",
1566
client.name)
1567
if self.server.use_dbus:
1568
# Emit D-Bus signal
1569
2400
client.Rejected("Denied")
1570
2401
return
1571
1572
#wait until timeout or approved
2402
2403
# wait until timeout or approved
1573
2404
time = datetime.datetime.now()
1574
2405
client.changedstate.acquire()
1575
(client.changedstate.wait
1576
(float(client.timedelta_to_milliseconds(delay)
1577
/ 1000)))
2406
client.changedstate.wait(delay.total_seconds())
1578
2407
client.changedstate.release()
1579
2408
time2 = datetime.datetime.now()
1580
2409
if (time2 - time) >= delay:
1581
2410
if not client.approved_by_default:
1582
logger.warning("Client %s timed out while"
1583
" waiting for approval",
1584
client.name)
2411
log.warning("Client %s timed out while"
2412
" waiting for approval",
2413
client.name)
1585
2414
if self.server.use_dbus:
1586
2415
# Emit D-Bus signal
1587
2416
client.Rejected("Approval timed out")
1590
2419
break
1591
2420
else:
1592
2421
delay -= time2 - time
1593
1594
sent_size = 0
1595
while sent_size < len(client.secret):
1596
try:
1597
sent = session.send(client.secret[sent_size:])
1598
except gnutls.errors.GNUTLSError as error:
1599
logger.warning("gnutls send failed")
1600
return
1601
logger.debug("Sent: %d, remaining: %d",
1602
sent, len(client.secret)
1603
- (sent_size + sent))
1604
sent_size += sent
1605
1606
logger.info("Sending secret to %s", client.name)
2422
2423
try:
2424
session.send(client.secret)
2425
except gnutls.Error as error:
2426
log.warning("gnutls send failed", exc_info=error)
2427
return
2428
2429
log.info("Sending secret to %s", client.name)
1607
2430
# bump the timeout using extended_timeout
1608
client.checked_ok(client.extended_timeout)
2431
client.bump_timeout(client.extended_timeout)
1609
2432
if self.server.use_dbus:
1610
2433
# Emit D-Bus signal
1611
2434
client.GotSecret()
1612
2435
1613
2436
finally:
1614
2437
if approval_required:
1615
2438
client.approvals_pending -= 1
1616
2439
try:
1617
2440
session.bye()
1618
except gnutls.errors.GNUTLSError as error:
1619
logger.warning("GnuTLS bye failed")
1620
2441
except gnutls.Error as error:
2442
log.warning("GnuTLS bye failed", exc_info=error)
2443
1621
2444
@staticmethod
1622
2445
def peer_certificate(session):
1623
"Return the peer's OpenPGP certificate as a bytestring"
1624
# If not an OpenPGP certificate...
1625
if (gnutls.library.functions
1626
.gnutls_certificate_type_get(session._c_object)
1627
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1628
# ...do the normal thing
1629
return session.peer_certificate
2446
"Return the peer's certificate as a bytestring"
2447
try:
2448
cert_type = gnutls.certificate_type_get2(
2449
session, gnutls.CTYPE_PEERS)
2450
except AttributeError:
2451
cert_type = gnutls.certificate_type_get(session)
2452
if gnutls.has_rawpk:
2453
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2454
else:
2455
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2456
# If not a valid certificate type...
2457
if cert_type not in valid_cert_types:
2458
log.info("Cert type %r not in %r", cert_type,
2459
valid_cert_types)
2460
# ...return invalid data
2461
return b""
1630
2462
list_size = ctypes.c_uint(1)
1631
cert_list = (gnutls.library.functions
1632
.gnutls_certificate_get_peers
1633
(session._c_object, ctypes.byref(list_size)))
2463
cert_list = (gnutls.certificate_get_peers
2464
(session, ctypes.byref(list_size)))
1634
2465
if not bool(cert_list) and list_size.value != 0:
1635
raise gnutls.errors.GNUTLSError("error getting peer"
1636
" certificate")
2466
raise gnutls.Error("error getting peer certificate")
1637
2467
if list_size.value == 0:
1638
2468
return None
1639
2469
cert = cert_list[0]
1640
2470
return ctypes.string_at(cert.data, cert.size)
1641
2471
2472
@staticmethod
2473
def key_id(certificate):
2474
"Convert a certificate bytestring to a hexdigit key ID"
2475
# New GnuTLS "datum" with the public key
2476
datum = gnutls.datum_t(
2477
ctypes.cast(ctypes.c_char_p(certificate),
2478
ctypes.POINTER(ctypes.c_ubyte)),
2479
ctypes.c_uint(len(certificate)))
2480
# XXX all these need to be created in the gnutls "module"
2481
# New empty GnuTLS certificate
2482
pubkey = gnutls.pubkey_t()
2483
gnutls.pubkey_init(ctypes.byref(pubkey))
2484
# Import the raw public key into the certificate
2485
gnutls.pubkey_import(pubkey,
2486
ctypes.byref(datum),
2487
gnutls.X509_FMT_DER)
2488
# New buffer for the key ID
2489
buf = ctypes.create_string_buffer(32)
2490
buf_len = ctypes.c_size_t(len(buf))
2491
# Get the key ID from the raw public key into the buffer
2492
gnutls.pubkey_get_key_id(
2493
pubkey,
2494
gnutls.KEYID_USE_SHA256,
2495
ctypes.cast(ctypes.byref(buf),
2496
ctypes.POINTER(ctypes.c_ubyte)),
2497
ctypes.byref(buf_len))
2498
# Deinit the certificate
2499
gnutls.pubkey_deinit(pubkey)
2500
2501
# Convert the buffer to a Python bytestring
2502
key_id = ctypes.string_at(buf, buf_len.value)
2503
# Convert the bytestring to hexadecimal notation
2504
hex_key_id = binascii.hexlify(key_id).upper()
2505
return hex_key_id
2506
1642
2507
@staticmethod
1643
2508
def fingerprint(openpgp):
1644
2509
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1645
2510
# New GnuTLS "datum" with the OpenPGP public key
1646
datum = (gnutls.library.types
1647
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1648
ctypes.POINTER
1649
(ctypes.c_ubyte)),
1650
ctypes.c_uint(len(openpgp))))
2511
datum = gnutls.datum_t(
2512
ctypes.cast(ctypes.c_char_p(openpgp),
2513
ctypes.POINTER(ctypes.c_ubyte)),
2514
ctypes.c_uint(len(openpgp)))
1651
2515
# New empty GnuTLS certificate
1652
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1653
(gnutls.library.functions
1654
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2516
crt = gnutls.openpgp_crt_t()
2517
gnutls.openpgp_crt_init(ctypes.byref(crt))
1655
2518
# Import the OpenPGP public key into the certificate
1656
(gnutls.library.functions
1657
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1658
gnutls.library.constants
1659
.GNUTLS_OPENPGP_FMT_RAW))
2519
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2520
gnutls.OPENPGP_FMT_RAW)
1660
2521
# Verify the self signature in the key
1661
2522
crtverify = ctypes.c_uint()
1662
(gnutls.library.functions
1663
.gnutls_openpgp_crt_verify_self(crt, 0,
1664
ctypes.byref(crtverify)))
2523
gnutls.openpgp_crt_verify_self(crt, 0,
2524
ctypes.byref(crtverify))
1665
2525
if crtverify.value != 0:
1666
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1667
raise (gnutls.errors.CertificateSecurityError
1668
("Verify failed"))
2526
gnutls.openpgp_crt_deinit(crt)
2527
raise gnutls.CertificateSecurityError(code
2528
=crtverify.value)
1669
2529
# New buffer for the fingerprint
1670
2530
buf = ctypes.create_string_buffer(20)
1671
2531
buf_len = ctypes.c_size_t()
1672
2532
# Get the fingerprint from the certificate into the buffer
1673
(gnutls.library.functions
1674
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1675
ctypes.byref(buf_len)))
2533
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2534
ctypes.byref(buf_len))
1676
2535
# Deinit the certificate
1677
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2536
gnutls.openpgp_crt_deinit(crt)
1678
2537
# Convert the buffer to a Python bytestring
1679
2538
fpr = ctypes.string_at(buf, buf_len.value)
1680
2539
# Convert the bytestring to hexadecimal notation
1682
2541
return hex_fpr
1683
2542
1684
2543
1685
class MultiprocessingMixIn(object):
2544
class MultiprocessingMixIn:
1686
2545
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2546
1687
2547
def sub_process_main(self, request, address):
1688
2548
try:
1689
2549
self.finish_request(request, address)
1690
2550
except Exception:
1691
2551
self.handle_error(request, address)
1692
2552
self.close_request(request)
1693
2553
1694
2554
def process_request(self, request, address):
1695
2555
"""Start a new process to process the request."""
1696
proc = multiprocessing.Process(target = self.sub_process_main,
1697
args = (request,
1698
address))
2556
proc = multiprocessing.Process(target=self.sub_process_main,
2557
args=(request, address))
1699
2558
proc.start()
1700
2559
return proc
1701
2560
1702
2561
1703
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2562
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1704
2563
""" adds a pipe to the MixIn """
2564
1705
2565
def process_request(self, request, client_address):
1706
2566
"""Overrides and wraps the original process_request().
1707
2567
1708
2568
This function creates a new pipe in self.pipe
1709
2569
"""
1710
2570
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1711
2571
1712
2572
proc = MultiprocessingMixIn.process_request(self, request,
1713
2573
client_address)
1714
2574
self.child_pipe.close()
1715
2575
self.add_pipe(parent_pipe, proc)
1716
2576
1717
2577
def add_pipe(self, parent_pipe, proc):
1718
2578
"""Dummy function; override as necessary"""
1719
raise NotImplementedError
2579
raise NotImplementedError()
1720
2580
1721
2581
1722
2582
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1723
socketserver.TCPServer, object):
1724
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1725
2583
socketserver.TCPServer):
2584
"""IPv6-capable TCP server. Accepts None as address and/or port
2585
1726
2586
Attributes:
1727
2587
enabled: Boolean; whether this server is activated yet
1728
2588
interface: None or a network interface name (string)
1729
2589
use_ipv6: Boolean; to use IPv6 or not
1730
2590
"""
2591
1731
2592
def __init__(self, server_address, RequestHandlerClass,
1732
interface=None, use_ipv6=True):
2593
interface=None,
2594
use_ipv6=True,
2595
socketfd=None):
2596
"""If socketfd is set, use that file descriptor instead of
2597
creating a new one with socket.socket().
2598
"""
1733
2599
self.interface = interface
1734
2600
if use_ipv6:
1735
2601
self.address_family = socket.AF_INET6
2602
if socketfd is not None:
2603
# Save the file descriptor
2604
self.socketfd = socketfd
2605
# Save the original socket.socket() function
2606
self.socket_socket = socket.socket
2607
2608
# To implement --socket, we monkey patch socket.socket.
2609
#
2610
# (When socketserver.TCPServer is a new-style class, we
2611
# could make self.socket into a property instead of monkey
2612
# patching socket.socket.)
2613
#
2614
# Create a one-time-only replacement for socket.socket()
2615
@functools.wraps(socket.socket)
2616
def socket_wrapper(*args, **kwargs):
2617
# Restore original function so subsequent calls are
2618
# not affected.
2619
socket.socket = self.socket_socket
2620
del self.socket_socket
2621
# This time only, return a new socket object from the
2622
# saved file descriptor.
2623
return socket.fromfd(self.socketfd, *args, **kwargs)
2624
# Replace socket.socket() function with wrapper
2625
socket.socket = socket_wrapper
2626
# The socketserver.TCPServer.__init__ will call
2627
# socket.socket(), which might be our replacement,
2628
# socket_wrapper(), if socketfd was set.
1736
2629
socketserver.TCPServer.__init__(self, server_address,
1737
2630
RequestHandlerClass)
2631
1738
2632
def server_bind(self):
1739
2633
"""This overrides the normal server_bind() function
1740
2634
to bind to an interface if one was specified, and also NOT to
1741
2635
bind to an address or port if they were not specified."""
2636
global SO_BINDTODEVICE
1742
2637
if self.interface is not None:
1743
2638
if SO_BINDTODEVICE is None:
1744
logger.error("SO_BINDTODEVICE does not exist;"
1745
" cannot bind to interface %s",
1746
self.interface)
1747
else:
1748
try:
1749
self.socket.setsockopt(socket.SOL_SOCKET,
1750
SO_BINDTODEVICE,
1751
str(self.interface
1752
+ '\0'))
1753
except socket.error as error:
1754
if error[0] == errno.EPERM:
1755
logger.error("No permission to"
1756
" bind to interface %s",
1757
self.interface)
1758
elif error[0] == errno.ENOPROTOOPT:
1759
logger.error("SO_BINDTODEVICE not available;"
1760
" cannot bind to interface %s",
1761
self.interface)
1762
else:
1763
raise
2639
# Fall back to a hard-coded value which seems to be
2640
# common enough.
2641
log.warning("SO_BINDTODEVICE not found, trying 25")
2642
SO_BINDTODEVICE = 25
2643
try:
2644
self.socket.setsockopt(
2645
socket.SOL_SOCKET, SO_BINDTODEVICE,
2646
(self.interface + "\0").encode("utf-8"))
2647
except socket.error as error:
2648
if error.errno == errno.EPERM:
2649
log.error("No permission to bind to interface %s",
2650
self.interface)
2651
elif error.errno == errno.ENOPROTOOPT:
2652
log.error("SO_BINDTODEVICE not available; cannot"
2653
" bind to interface %s", self.interface)
2654
elif error.errno == errno.ENODEV:
2655
log.error("Interface %s does not exist, cannot"
2656
" bind", self.interface)
2657
else:
2658
raise
1764
2659
# Only bind(2) the socket if we really need to.
1765
2660
if self.server_address[0] or self.server_address[1]:
2661
if self.server_address[1]:
2662
self.allow_reuse_address = True
1766
2663
if not self.server_address[0]:
1767
2664
if self.address_family == socket.AF_INET6:
1768
any_address = "::" # in6addr_any
2665
any_address = "::" # in6addr_any
1769
2666
else:
1770
any_address = socket.INADDR_ANY
2667
any_address = "0.0.0.0" # INADDR_ANY
1771
2668
self.server_address = (any_address,
1772
2669
self.server_address[1])
1773
2670
elif not self.server_address[1]:
1774
self.server_address = (self.server_address[0],
1775
0)
2671
self.server_address = (self.server_address[0], 0)
1776
2672
# if self.interface:
1777
2673
# self.server_address = (self.server_address[0],
1778
2674
# 0, # port
1784
2680
1785
2681
class MandosServer(IPv6_TCPServer):
1786
2682
"""Mandos server.
1787
2683
1788
2684
Attributes:
1789
2685
clients: set of Client objects
1790
2686
gnutls_priority GnuTLS priority string
1791
2687
use_dbus: Boolean; to emit D-Bus signals or not
1792
1793
Assumes a gobject.MainLoop event loop.
2688
2689
Assumes a GLib.MainLoop event loop.
1794
2690
"""
2691
1795
2692
def __init__(self, server_address, RequestHandlerClass,
1796
interface=None, use_ipv6=True, clients=None,
1797
gnutls_priority=None, use_dbus=True):
2693
interface=None,
2694
use_ipv6=True,
2695
clients=None,
2696
gnutls_priority=None,
2697
use_dbus=True,
2698
socketfd=None):
1798
2699
self.enabled = False
1799
2700
self.clients = clients
1800
2701
if self.clients is None:
1803
2704
self.gnutls_priority = gnutls_priority
1804
2705
IPv6_TCPServer.__init__(self, server_address,
1805
2706
RequestHandlerClass,
1806
interface = interface,
1807
use_ipv6 = use_ipv6)
2707
interface=interface,
2708
use_ipv6=use_ipv6,
2709
socketfd=socketfd)
2710
1808
2711
def server_activate(self):
1809
2712
if self.enabled:
1810
2713
return socketserver.TCPServer.server_activate(self)
1811
2714
1812
2715
def enable(self):
1813
2716
self.enabled = True
1814
2717
1815
2718
def add_pipe(self, parent_pipe, proc):
1816
2719
# Call "handle_ipc" for both data and EOF events
1817
gobject.io_add_watch(parent_pipe.fileno(),
1818
gobject.IO_IN | gobject.IO_HUP,
1819
functools.partial(self.handle_ipc,
1820
parent_pipe =
1821
parent_pipe,
1822
proc = proc))
1823
1824
def handle_ipc(self, source, condition, parent_pipe=None,
1825
proc = None, client_object=None):
1826
condition_names = {
1827
gobject.IO_IN: "IN", # There is data to read.
1828
gobject.IO_OUT: "OUT", # Data can be written (without
1829
# blocking).
1830
gobject.IO_PRI: "PRI", # There is urgent data to read.
1831
gobject.IO_ERR: "ERR", # Error condition.
1832
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1833
# broken, usually for pipes and
1834
# sockets).
1835
}
1836
conditions_string = ' | '.join(name
1837
for cond, name in
1838
condition_names.iteritems()
1839
if cond & condition)
2720
GLib.io_add_watch(
2721
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc))
2726
2727
def handle_ipc(self, source, condition,
2728
parent_pipe=None,
2729
proc=None,
2730
client_object=None):
1840
2731
# error, or the other end of multiprocessing.Pipe has closed
1841
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2732
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1842
2733
# Wait for other process to exit
1843
2734
proc.join()
1844
2735
return False
1845
2736
1846
2737
# Read a request from the child
1847
2738
request = parent_pipe.recv()
1848
2739
command = request[0]
1849
1850
if command == 'init':
1851
fpr = request[1]
1852
address = request[2]
1853
1854
for c in self.clients.itervalues():
1855
if c.fingerprint == fpr:
2740
2741
if command == "init":
2742
key_id = request[1].decode("ascii")
2743
fpr = request[2].decode("ascii")
2744
address = request[3]
2745
2746
for c in self.clients.values():
2747
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
"27AE41E4649B934CA495991B7852B855"):
2749
continue
2750
if key_id and c.key_id == key_id:
2751
client = c
2752
break
2753
if fpr and c.fingerprint == fpr:
1856
2754
client = c
1857
2755
break
1858
2756
else:
1859
logger.info("Client not found for fingerprint: %s, ad"
1860
"dress: %s", fpr, address)
2757
log.info("Client not found for key ID: %s, address:"
2758
" %s", key_id or fpr, address)
1861
2759
if self.use_dbus:
1862
2760
# Emit D-Bus signal
1863
mandos_dbus_service.ClientNotFound(fpr,
2761
mandos_dbus_service.ClientNotFound(key_id or fpr,
1864
2762
address[0])
1865
2763
parent_pipe.send(False)
1866
2764
return False
1867
1868
gobject.io_add_watch(parent_pipe.fileno(),
1869
gobject.IO_IN | gobject.IO_HUP,
1870
functools.partial(self.handle_ipc,
1871
parent_pipe =
1872
parent_pipe,
1873
proc = proc,
1874
client_object =
1875
client))
2765
2766
GLib.io_add_watch(
2767
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2769
functools.partial(self.handle_ipc,
2770
parent_pipe=parent_pipe,
2771
proc=proc,
2772
client_object=client))
1876
2773
parent_pipe.send(True)
1877
2774
# remove the old hook in favor of the new above hook on
1878
2775
# same fileno
1879
2776
return False
1880
if command == 'funcall':
2777
if command == "funcall":
1881
2778
funcname = request[1]
1882
2779
args = request[2]
1883
2780
kwargs = request[3]
1884
1885
parent_pipe.send(('data', getattr(client_object,
2781
2782
parent_pipe.send(("data", getattr(client_object,
1886
2783
funcname)(*args,
1887
**kwargs)))
1888
1889
if command == 'getattr':
2784
**kwargs)))
2785
2786
if command == "getattr":
1890
2787
attrname = request[1]
1891
if callable(client_object.__getattribute__(attrname)):
1892
parent_pipe.send(('function',))
2788
if isinstance(client_object.__getattribute__(attrname),
2789
collections.abc.Callable):
2790
parent_pipe.send(("function", ))
1893
2791
else:
1894
parent_pipe.send(('data', client_object
1895
.__getattribute__(attrname)))
1896
1897
if command == 'setattr':
2792
parent_pipe.send((
2793
"data", client_object.__getattribute__(attrname)))
2794
2795
if command == "setattr":
1898
2796
attrname = request[1]
1899
2797
value = request[2]
1900
2798
setattr(client_object, attrname, value)
1901
2799
1902
2800
return True
1903
2801
1904
2802
2803
def rfc3339_duration_to_delta(duration):
2804
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2805
2806
>>> timedelta = datetime.timedelta
2807
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2808
True
2809
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2810
True
2811
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2812
True
2813
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2814
True
2815
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2816
True
2817
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2818
True
2819
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2820
True
2821
>>> del timedelta
2822
"""
2823
2824
# Parsing an RFC 3339 duration with regular expressions is not
2825
# possible - there would have to be multiple places for the same
2826
# values, like seconds. The current code, while more esoteric, is
2827
# cleaner without depending on a parsing library. If Python had a
2828
# built-in library for parsing we would use it, but we'd like to
2829
# avoid excessive use of external libraries.
2830
2831
# New type for defining tokens, syntax, and semantics all-in-one
2832
Token = collections.namedtuple("Token", (
2833
"regexp", # To match token; if "value" is not None, must have
2834
# a "group" containing digits
2835
"value", # datetime.timedelta or None
2836
"followers")) # Tokens valid after this token
2837
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2838
# the "duration" ABNF definition in RFC 3339, Appendix A.
2839
token_end = Token(re.compile(r"$"), None, frozenset())
2840
token_second = Token(re.compile(r"(\d+)S"),
2841
datetime.timedelta(seconds=1),
2842
frozenset((token_end, )))
2843
token_minute = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(minutes=1),
2845
frozenset((token_second, token_end)))
2846
token_hour = Token(re.compile(r"(\d+)H"),
2847
datetime.timedelta(hours=1),
2848
frozenset((token_minute, token_end)))
2849
token_time = Token(re.compile(r"T"),
2850
None,
2851
frozenset((token_hour, token_minute,
2852
token_second)))
2853
token_day = Token(re.compile(r"(\d+)D"),
2854
datetime.timedelta(days=1),
2855
frozenset((token_time, token_end)))
2856
token_month = Token(re.compile(r"(\d+)M"),
2857
datetime.timedelta(weeks=4),
2858
frozenset((token_day, token_end)))
2859
token_year = Token(re.compile(r"(\d+)Y"),
2860
datetime.timedelta(weeks=52),
2861
frozenset((token_month, token_end)))
2862
token_week = Token(re.compile(r"(\d+)W"),
2863
datetime.timedelta(weeks=1),
2864
frozenset((token_end, )))
2865
token_duration = Token(re.compile(r"P"), None,
2866
frozenset((token_year, token_month,
2867
token_day, token_time,
2868
token_week)))
2869
# Define starting values:
2870
# Value so far
2871
value = datetime.timedelta()
2872
found_token = None
2873
# Following valid tokens
2874
followers = frozenset((token_duration, ))
2875
# String left to parse
2876
s = duration
2877
# Loop until end token is found
2878
while found_token is not token_end:
2879
# Search for any currently valid tokens
2880
for token in followers:
2881
match = token.regexp.match(s)
2882
if match is not None:
2883
# Token found
2884
if token.value is not None:
2885
# Value found, parse digits
2886
factor = int(match.group(1), 10)
2887
# Add to value so far
2888
value += factor * token.value
2889
# Strip token from string
2890
s = token.regexp.sub("", s, 1)
2891
# Go to found token
2892
found_token = token
2893
# Set valid next tokens
2894
followers = found_token.followers
2895
break
2896
else:
2897
# No currently valid tokens were found
2898
raise ValueError("Invalid RFC 3339 duration: {!r}"
2899
.format(duration))
2900
# End token found
2901
return value
2902
2903
1905
2904
def string_to_delta(interval):
1906
2905
"""Parse a string and return a datetime.timedelta
1907
1908
>>> string_to_delta('7d')
1909
datetime.timedelta(7)
1910
>>> string_to_delta('60s')
1911
datetime.timedelta(0, 60)
1912
>>> string_to_delta('60m')
1913
datetime.timedelta(0, 3600)
1914
>>> string_to_delta('24h')
1915
datetime.timedelta(1)
1916
>>> string_to_delta('1w')
1917
datetime.timedelta(7)
1918
>>> string_to_delta('5m 30s')
1919
datetime.timedelta(0, 330)
2906
2907
>>> string_to_delta("7d") == datetime.timedelta(7)
2908
True
2909
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2910
True
2911
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2912
True
2913
>>> string_to_delta("24h") == datetime.timedelta(1)
2914
True
2915
>>> string_to_delta("1w") == datetime.timedelta(7)
2916
True
2917
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2918
True
1920
2919
"""
2920
2921
try:
2922
return rfc3339_duration_to_delta(interval)
2923
except ValueError:
2924
pass
2925
1921
2926
timevalue = datetime.timedelta(0)
1922
2927
for s in interval.split():
1923
2928
try:
1924
suffix = unicode(s[-1])
2929
suffix = s[-1]
1925
2930
value = int(s[:-1])
1926
2931
if suffix == "d":
1927
2932
delta = datetime.timedelta(value)
1934
2939
elif suffix == "w":
1935
2940
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1936
2941
else:
1937
raise ValueError("Unknown suffix %r" % suffix)
1938
except (ValueError, IndexError) as e:
2942
raise ValueError("Unknown suffix {!r}".format(suffix))
2943
except IndexError as e:
1939
2944
raise ValueError(*(e.args))
1940
2945
timevalue += delta
1941
2946
return timevalue
1942
2947
1943
2948
1944
def daemon(nochdir = False, noclose = False):
2949
def daemon(nochdir=False, noclose=False):
1945
2950
"""See daemon(3). Standard BSD Unix function.
1946
2951
1947
2952
This should really exist as os.daemon, but it doesn't (yet)."""
1948
2953
if os.fork():
1949
2954
sys.exit()
1954
2959
sys.exit()
1955
2960
if not noclose:
1956
2961
# Close all standard open file descriptors
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2962
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1958
2963
if not stat.S_ISCHR(os.fstat(null).st_mode):
1959
2964
raise OSError(errno.ENODEV,
1960
"%s not a character device"
1961
% os.path.devnull)
2965
"{} not a character device"
2966
.format(os.devnull))
1962
2967
os.dup2(null, sys.stdin.fileno())
1963
2968
os.dup2(null, sys.stdout.fileno())
1964
2969
os.dup2(null, sys.stderr.fileno())
1967
2972
1968
2973
1969
2974
def main():
1970
2975
1971
2976
##################################################################
1972
2977
# Parsing of options, both command line and config file
1973
2978
1974
2979
parser = argparse.ArgumentParser()
1975
2980
parser.add_argument("-v", "--version", action="version",
1976
version = "%%(prog)s %s" % version,
2981
version="%(prog)s {}".format(version),
1977
2982
help="show version number and exit")
1978
2983
parser.add_argument("-i", "--interface", metavar="IF",
1979
2984
help="Bind to interface IF")
1985
2990
help="Run self-test")
1986
2991
parser.add_argument("--debug", action="store_true",
1987
2992
help="Debug mode; run in foreground and log"
1988
" to terminal")
2993
" to terminal", default=None)
1989
2994
parser.add_argument("--debuglevel", metavar="LEVEL",
1990
2995
help="Debug level for stdout output")
1991
2996
parser.add_argument("--priority", help="GnuTLS"
1998
3003
" files")
1999
3004
parser.add_argument("--no-dbus", action="store_false",
2000
3005
dest="use_dbus", help="Do not provide D-Bus"
2001
" system bus interface")
3006
" system bus interface", default=None)
2002
3007
parser.add_argument("--no-ipv6", action="store_false",
2003
dest="use_ipv6", help="Do not use IPv6")
3008
dest="use_ipv6", help="Do not use IPv6",
3009
default=None)
2004
3010
parser.add_argument("--no-restore", action="store_false",
2005
3011
dest="restore", help="Do not restore stored"
2006
" state")
3012
" state", default=None)
3013
parser.add_argument("--socket", type=int,
3014
help="Specify a file descriptor to a network"
3015
" socket to use instead of creating one")
2007
3016
parser.add_argument("--statedir", metavar="DIR",
2008
3017
help="Directory to save/restore state in")
2009
3018
parser.add_argument("--foreground", action="store_true",
3019
help="Run in foreground", default=None)
3020
parser.add_argument("--no-zeroconf", action="store_false",
3021
dest="zeroconf", help="Do not use Zeroconf",
3022
default=None)
3023
2010
3024
options = parser.parse_args()
2011
2012
if options.check:
2013
import doctest
2014
doctest.testmod()
2015
sys.exit()
2016
3025
2017
3026
# Default values for config file for server-global settings
2018
server_defaults = { "interface": "",
2019
"address": "",
2020
"port": "",
2021
"debug": "False",
2022
"priority":
2023
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2024
"servicename": "Mandos",
2025
"use_dbus": "True",
2026
"use_ipv6": "True",
2027
"debuglevel": "",
2028
"restore": "True",
2029
"statedir": "/var/lib/mandos"
2030
}
2031
3027
if gnutls.has_rawpk:
3028
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3029
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3030
else:
3031
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3032
":+SIGN-DSA-SHA256")
3033
server_defaults = {"interface": "",
3034
"address": "",
3035
"port": "",
3036
"debug": "False",
3037
"priority": priority,
3038
"servicename": "Mandos",
3039
"use_dbus": "True",
3040
"use_ipv6": "True",
3041
"debuglevel": "",
3042
"restore": "True",
3043
"socket": "",
3044
"statedir": "/var/lib/mandos",
3045
"foreground": "False",
3046
"zeroconf": "True",
3047
}
3048
del priority
3049
2032
3050
# Parse config file for server-global settings
2033
server_config = configparser.SafeConfigParser(server_defaults)
3051
server_config = configparser.ConfigParser(server_defaults)
2034
3052
del server_defaults
2035
server_config.read(os.path.join(options.configdir,
2036
"mandos.conf"))
2037
# Convert the SafeConfigParser object to a dict
3053
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3054
# Convert the ConfigParser object to a dict
2038
3055
server_settings = server_config.defaults()
2039
3056
# Use the appropriate methods on the non-string config options
2040
for option in ("debug", "use_dbus", "use_ipv6"):
3057
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3058
"foreground", "zeroconf"):
2041
3059
server_settings[option] = server_config.getboolean("DEFAULT",
2042
3060
option)
2043
3061
if server_settings["port"]:
2044
3062
server_settings["port"] = server_config.getint("DEFAULT",
2045
3063
"port")
3064
if server_settings["socket"]:
3065
server_settings["socket"] = server_config.getint("DEFAULT",
3066
"socket")
3067
# Later, stdin will, and stdout and stderr might, be dup'ed
3068
# over with an opened os.devnull. But we don't want this to
3069
# happen with a supplied network socket.
3070
if 0 <= server_settings["socket"] <= 2:
3071
server_settings["socket"] = os.dup(server_settings
3072
["socket"])
2046
3073
del server_config
2047
3074
2048
3075
# Override the settings from the config file with command line
2049
3076
# options, if set.
2050
3077
for option in ("interface", "address", "port", "debug",
2051
"priority", "servicename", "configdir",
2052
"use_dbus", "use_ipv6", "debuglevel", "restore",
2053
"statedir"):
3078
"priority", "servicename", "configdir", "use_dbus",
3079
"use_ipv6", "debuglevel", "restore", "statedir",
3080
"socket", "foreground", "zeroconf"):
2054
3081
value = getattr(options, option)
2055
3082
if value is not None:
2056
3083
server_settings[option] = value
2057
3084
del options
2058
3085
# Force all strings to be unicode
2059
3086
for option in server_settings.keys():
2060
if type(server_settings[option]) is str:
2061
server_settings[option] = unicode(server_settings[option])
3087
if isinstance(server_settings[option], bytes):
3088
server_settings[option] = (server_settings[option]
3089
.decode("utf-8"))
3090
# Force all boolean options to be boolean
3091
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3092
"foreground", "zeroconf"):
3093
server_settings[option] = bool(server_settings[option])
3094
# Debug implies foreground
3095
if server_settings["debug"]:
3096
server_settings["foreground"] = True
2062
3097
# Now we have our good server settings in "server_settings"
2063
3098
2064
3099
##################################################################
2065
3100
3101
if (not server_settings["zeroconf"]
3102
and not (server_settings["port"]
3103
or server_settings["socket"] != "")):
3104
parser.error("Needs port or socket to work without Zeroconf")
3105
2066
3106
# For convenience
2067
3107
debug = server_settings["debug"]
2068
3108
debuglevel = server_settings["debuglevel"]
2070
3110
use_ipv6 = server_settings["use_ipv6"]
2071
3111
stored_state_path = os.path.join(server_settings["statedir"],
2072
3112
stored_state_file)
2073
3113
foreground = server_settings["foreground"]
3114
zeroconf = server_settings["zeroconf"]
3115
2074
3116
if debug:
2075
3117
initlogger(debug, logging.DEBUG)
2076
3118
else:
2079
3121
else:
2080
3122
level = getattr(logging, debuglevel.upper())
2081
3123
initlogger(debug, level)
2082
3124
2083
3125
if server_settings["servicename"] != "Mandos":
2084
syslogger.setFormatter(logging.Formatter
2085
('Mandos (%s) [%%(process)d]:'
2086
' %%(levelname)s: %%(message)s'
2087
% server_settings["servicename"]))
2088
3126
syslogger.setFormatter(
3127
logging.Formatter("Mandos ({}) [%(process)d]:"
3128
" %(levelname)s: %(message)s".format(
3129
server_settings["servicename"])))
3130
2089
3131
# Parse config file with clients
2090
client_config = configparser.SafeConfigParser(Client
2091
.client_defaults)
3132
client_config = configparser.ConfigParser(Client.client_defaults)
2092
3133
client_config.read(os.path.join(server_settings["configdir"],
2093
3134
"clients.conf"))
2094
3135
2095
3136
global mandos_dbus_service
2096
3137
mandos_dbus_service = None
2097
2098
tcp_server = MandosServer((server_settings["address"],
2099
server_settings["port"]),
2100
ClientHandler,
2101
interface=(server_settings["interface"]
2102
or None),
2103
use_ipv6=use_ipv6,
2104
gnutls_priority=
2105
server_settings["priority"],
2106
use_dbus=use_dbus)
2107
if not debug:
2108
pidfilename = "/var/run/mandos.pid"
2109
try:
2110
pidfile = open(pidfilename, "w")
2111
except IOError:
2112
logger.error("Could not open file %r", pidfilename)
2113
2114
try:
2115
uid = pwd.getpwnam("_mandos").pw_uid
2116
gid = pwd.getpwnam("_mandos").pw_gid
2117
except KeyError:
2118
try:
2119
uid = pwd.getpwnam("mandos").pw_uid
2120
gid = pwd.getpwnam("mandos").pw_gid
3138
3139
socketfd = None
3140
if server_settings["socket"] != "":
3141
socketfd = server_settings["socket"]
3142
tcp_server = MandosServer(
3143
(server_settings["address"], server_settings["port"]),
3144
ClientHandler,
3145
interface=(server_settings["interface"] or None),
3146
use_ipv6=use_ipv6,
3147
gnutls_priority=server_settings["priority"],
3148
use_dbus=use_dbus,
3149
socketfd=socketfd)
3150
if not foreground:
3151
pidfilename = "/run/mandos.pid"
3152
if not os.path.isdir("/run/."):
3153
pidfilename = "/var/run/mandos.pid"
3154
pidfile = None
3155
try:
3156
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3157
except IOError as e:
3158
log.error("Could not open file %r", pidfilename,
3159
exc_info=e)
3160
3161
for name, group in (("_mandos", "_mandos"),
3162
("mandos", "mandos"),
3163
("nobody", "nogroup")):
3164
try:
3165
uid = pwd.getpwnam(name).pw_uid
3166
gid = pwd.getpwnam(group).pw_gid
3167
break
2121
3168
except KeyError:
2122
try:
2123
uid = pwd.getpwnam("nobody").pw_uid
2124
gid = pwd.getpwnam("nobody").pw_gid
2125
except KeyError:
2126
uid = 65534
2127
gid = 65534
3169
continue
3170
else:
3171
uid = 65534
3172
gid = 65534
2128
3173
try:
2129
3174
os.setgid(gid)
2130
3175
os.setuid(uid)
3176
log.debug("Did setuid/setgid to %s:%s", uid, gid)
2131
3177
except OSError as error:
2132
if error[0] != errno.EPERM:
2133
raise error
2134
3178
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3179
os.strerror(error.errno))
3180
if error.errno != errno.EPERM:
3181
raise
3182
2135
3183
if debug:
2136
3184
# Enable all possible GnuTLS debugging
2137
3185
2138
3186
# "Use a log level over 10 to enable all debugging options."
2139
3187
# - GnuTLS manual
2140
gnutls.library.functions.gnutls_global_set_log_level(11)
2141
2142
@gnutls.library.types.gnutls_log_func
3188
gnutls.global_set_log_level(11)
3189
3190
@gnutls.log_func
2143
3191
def debug_gnutls(level, string):
2144
logger.debug("GnuTLS: %s", string[:-1])
2145
2146
(gnutls.library.functions
2147
.gnutls_global_set_log_function(debug_gnutls))
2148
3192
log.debug("GnuTLS: %s",
3193
string[:-1].decode("utf-8", errors="replace"))
3194
3195
gnutls.global_set_log_function(debug_gnutls)
3196
2149
3197
# Redirect stdin so all checkers get /dev/null
2150
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3198
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2151
3199
os.dup2(null, sys.stdin.fileno())
2152
3200
if null > 2:
2153
3201
os.close(null)
2154
3202
2155
3203
# Need to fork before connecting to D-Bus
2156
if not debug:
3204
if not foreground:
2157
3205
# Close all input and output, do double fork, etc.
2158
3206
daemon()
2159
2160
gobject.threads_init()
2161
3207
3208
if gi.version_info < (3, 10, 2):
3209
# multiprocessing will use threads, so before we use GLib we
3210
# need to inform GLib that threads will be used.
3211
GLib.threads_init()
3212
2162
3213
global main_loop
2163
3214
# From the Avahi example code
2164
DBusGMainLoop(set_as_default=True )
2165
main_loop = gobject.MainLoop()
3215
DBusGMainLoop(set_as_default=True)
3216
main_loop = GLib.MainLoop()
2166
3217
bus = dbus.SystemBus()
2167
3218
# End of Avahi example code
2168
3219
if use_dbus:
2169
3220
try:
2170
3221
bus_name = dbus.service.BusName("se.recompile.Mandos",
2171
bus, do_not_queue=True)
2172
old_bus_name = (dbus.service.BusName
2173
("se.bsnet.fukt.Mandos", bus,
2174
do_not_queue=True))
2175
except dbus.exceptions.NameExistsException as e:
2176
logger.error(unicode(e) + ", disabling D-Bus")
3222
bus,
3223
do_not_queue=True)
3224
old_bus_name = dbus.service.BusName(
3225
"se.bsnet.fukt.Mandos", bus,
3226
do_not_queue=True)
3227
except dbus.exceptions.DBusException as e:
3228
log.error("Disabling D-Bus:", exc_info=e)
2177
3229
use_dbus = False
2178
3230
server_settings["use_dbus"] = False
2179
3231
tcp_server.use_dbus = False
2180
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2181
service = AvahiServiceToSyslog(name =
2182
server_settings["servicename"],
2183
servicetype = "_mandos._tcp",
2184
protocol = protocol, bus = bus)
2185
if server_settings["interface"]:
2186
service.interface = (if_nametoindex
2187
(str(server_settings["interface"])))
2188
3232
if zeroconf:
3233
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3234
service = AvahiServiceToSyslog(
3235
name=server_settings["servicename"],
3236
servicetype="_mandos._tcp",
3237
protocol=protocol,
3238
bus=bus)
3239
if server_settings["interface"]:
3240
service.interface = if_nametoindex(
3241
server_settings["interface"].encode("utf-8"))
3242
2189
3243
global multiprocessing_manager
2190
3244
multiprocessing_manager = multiprocessing.Manager()
2191
3245
2192
3246
client_class = Client
2193
3247
if use_dbus:
2194
client_class = functools.partial(ClientDBusTransitional,
2195
bus = bus)
2196
3248
client_class = functools.partial(ClientDBus, bus=bus)
3249
2197
3250
client_settings = Client.config_parser(client_config)
2198
3251
old_client_settings = {}
2199
3252
clients_data = {}
2200
3253
3254
# This is used to redirect stdout and stderr for checker processes
3255
global wnull
3256
wnull = open(os.devnull, "w") # A writable /dev/null
3257
# Only used if server is running in foreground but not in debug
3258
# mode
3259
if debug or not foreground:
3260
wnull.close()
3261
2201
3262
# Get client data and settings from last running state.
2202
3263
if server_settings["restore"]:
2203
3264
try:
2204
3265
with open(stored_state_path, "rb") as stored_state:
2205
clients_data, old_client_settings = (pickle.load
2206
(stored_state))
3266
if sys.version_info.major == 2:
3267
clients_data, old_client_settings = pickle.load(
3268
stored_state)
3269
else:
3270
bytes_clients_data, bytes_old_client_settings = (
3271
pickle.load(stored_state, encoding="bytes"))
3272
# Fix bytes to strings
3273
# clients_data
3274
# .keys()
3275
clients_data = {(key.decode("utf-8")
3276
if isinstance(key, bytes)
3277
else key): value
3278
for key, value in
3279
bytes_clients_data.items()}
3280
del bytes_clients_data
3281
for key in clients_data:
3282
value = {(k.decode("utf-8")
3283
if isinstance(k, bytes) else k): v
3284
for k, v in
3285
clients_data[key].items()}
3286
clients_data[key] = value
3287
# .client_structure
3288
value["client_structure"] = [
3289
(s.decode("utf-8")
3290
if isinstance(s, bytes)
3291
else s) for s in
3292
value["client_structure"]]
3293
# .name, .host, and .checker_command
3294
for k in ("name", "host", "checker_command"):
3295
if isinstance(value[k], bytes):
3296
value[k] = value[k].decode("utf-8")
3297
if "key_id" not in value:
3298
value["key_id"] = ""
3299
elif "fingerprint" not in value:
3300
value["fingerprint"] = ""
3301
# old_client_settings
3302
# .keys()
3303
old_client_settings = {
3304
(key.decode("utf-8")
3305
if isinstance(key, bytes)
3306
else key): value
3307
for key, value in
3308
bytes_old_client_settings.items()}
3309
del bytes_old_client_settings
3310
# .host and .checker_command
3311
for value in old_client_settings.values():
3312
for attribute in ("host", "checker_command"):
3313
if isinstance(value[attribute], bytes):
3314
value[attribute] = (value[attribute]
3315
.decode("utf-8"))
2207
3316
os.remove(stored_state_path)
2208
3317
except IOError as e:
2209
logger.warning("Could not load persistent state: {0}"
2210
.format(e))
2211
if e.errno != errno.ENOENT:
3318
if e.errno == errno.ENOENT:
3319
log.warning("Could not load persistent state:"
3320
" %s", os.strerror(e.errno))
3321
else:
3322
log.critical("Could not load persistent state:",
3323
exc_info=e)
2212
3324
raise
2213
3325
except EOFError as e:
2214
logger.warning("Could not load persistent state: "
2215
"EOFError: {0}".format(e))
2216
3326
log.warning("Could not load persistent state: EOFError:",
3327
exc_info=e)
3328
2217
3329
with PGPEngine() as pgp:
2218
for client_name, client in clients_data.iteritems():
3330
for client_name, client in clients_data.items():
3331
# Skip removed clients
3332
if client_name not in client_settings:
3333
continue
3334
2219
3335
# Decide which value to use after restoring saved state.
2220
3336
# We have three different values: Old config file,
2221
3337
# new config file, and saved state.
2226
3342
# For each value in new config, check if it
2227
3343
# differs from the old config value (Except for
2228
3344
# the "secret" attribute)
2229
if (name != "secret" and
2230
value != old_client_settings[client_name]
2231
[name]):
3345
if (name != "secret"
3346
and (value !=
3347
old_client_settings[client_name][name])):
2232
3348
client[name] = value
2233
3349
except KeyError:
2234
3350
pass
2235
3351
2236
3352
# Clients who has passed its expire date can still be
2237
# enabled if its last checker was successful. Clients
3353
# enabled if its last checker was successful. A Client
2238
3354
# whose checker succeeded before we stored its state is
2239
3355
# assumed to have successfully run all checkers during
2240
3356
# downtime.
2241
3357
if client["enabled"]:
2242
3358
if datetime.datetime.utcnow() >= client["expires"]:
2243
3359
if not client["last_checked_ok"]:
2244
logger.warning(
2245
"disabling client {0} - Client never "
2246
"performed a successful checker"
2247
.format(client_name))
3360
log.warning("disabling client %s - Client"
3361
" never performed a successful"
3362
" checker", client_name)
2248
3363
client["enabled"] = False
2249
3364
elif client["last_checker_status"] != 0:
2250
logger.warning(
2251
"disabling client {0} - Client "
2252
"last checker failed with error code {1}"
2253
.format(client_name,
2254
client["last_checker_status"]))
3365
log.warning("disabling client %s - Client"
3366
" last checker failed with error"
3367
" code %s", client_name,
3368
client["last_checker_status"])
2255
3369
client["enabled"] = False
2256
3370
else:
2257
client["expires"] = (datetime.datetime
2258
.utcnow()
2259
+ client["timeout"])
2260
logger.debug("Last checker succeeded,"
2261
" keeping {0} enabled"
2262
.format(client_name))
3371
client["expires"] = (
3372
datetime.datetime.utcnow()
3373
+ client["timeout"])
3374
log.debug("Last checker succeeded, keeping %s"
3375
" enabled", client_name)
2263
3376
try:
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2267
["secret"]))
3377
client["secret"] = pgp.decrypt(
3378
client["encrypted_secret"],
3379
client_settings[client_name]["secret"])
2268
3380
except PGPError:
2269
3381
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
3382
log.debug("Failed to decrypt %s old secret",
3383
client_name)
3384
client["secret"] = (client_settings[client_name]
3385
["secret"])
2274
3386
2275
2276
3387
# Add/remove clients based on new changes made to config
2277
3388
for client_name in (set(old_client_settings)
2278
3389
- set(client_settings)):
2282
3393
clients_data[client_name] = client_settings[client_name]
2283
3394
2284
3395
# Create all client objects
2285
for client_name, client in clients_data.iteritems():
3396
for client_name, client in clients_data.items():
2286
3397
tcp_server.clients[client_name] = client_class(
2287
name = client_name, settings = client)
2288
3398
name=client_name,
3399
settings=client,
3400
server_settings=server_settings)
3401
2289
3402
if not tcp_server.clients:
2290
logger.warning("No clients defined")
2291
2292
if not debug:
2293
try:
2294
with pidfile:
2295
pid = os.getpid()
2296
pidfile.write(str(pid) + "\n".encode("utf-8"))
2297
del pidfile
2298
except IOError:
2299
logger.error("Could not write to file %r with PID %d",
2300
pidfilename, pid)
2301
except NameError:
2302
# "pidfile" was never created
2303
pass
3403
log.warning("No clients defined")
3404
3405
if not foreground:
3406
if pidfile is not None:
3407
pid = os.getpid()
3408
try:
3409
with pidfile:
3410
print(pid, file=pidfile)
3411
except IOError:
3412
log.error("Could not write to file %r with PID %d",
3413
pidfilename, pid)
3414
del pidfile
2304
3415
del pidfilename
2305
signal.signal(signal.SIGINT, signal.SIG_IGN)
2306
2307
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2308
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2309
3416
3417
for termsig in (signal.SIGHUP, signal.SIGTERM):
3418
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3419
lambda: main_loop.quit() and False)
3420
2310
3421
if use_dbus:
2311
class MandosDBusService(dbus.service.Object):
3422
3423
@alternate_dbus_interfaces(
3424
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3425
class MandosDBusService(DBusObjectWithObjectManager):
2312
3426
"""A D-Bus proxy object"""
3427
2313
3428
def __init__(self):
2314
3429
dbus.service.Object.__init__(self, bus, "/")
3430
2315
3431
_interface = "se.recompile.Mandos"
2316
3432
2317
3433
@dbus.service.signal(_interface, signature="o")
2318
3434
def ClientAdded(self, objpath):
2319
3435
"D-Bus signal"
2320
3436
pass
2321
3437
2322
3438
@dbus.service.signal(_interface, signature="ss")
2323
def ClientNotFound(self, fingerprint, address):
3439
def ClientNotFound(self, key_id, address):
2324
3440
"D-Bus signal"
2325
3441
pass
2326
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2327
3445
@dbus.service.signal(_interface, signature="os")
2328
3446
def ClientRemoved(self, objpath, name):
2329
3447
"D-Bus signal"
2330
3448
pass
2331
3449
3450
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3451
"true"})
2332
3452
@dbus.service.method(_interface, out_signature="ao")
2333
3453
def GetAllClients(self):
2334
3454
"D-Bus method"
2335
return dbus.Array(c.dbus_object_path
2336
for c in
2337
tcp_server.clients.itervalues())
2338
3455
return dbus.Array(c.dbus_object_path for c in
3456
tcp_server.clients.values())
3457
3458
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3459
"true"})
2339
3460
@dbus.service.method(_interface,
2340
3461
out_signature="a{oa{sv}}")
2341
3462
def GetAllClientsWithProperties(self):
2342
3463
"D-Bus method"
2343
3464
return dbus.Dictionary(
2344
((c.dbus_object_path, c.GetAll(""))
2345
for c in tcp_server.clients.itervalues()),
3465
{c.dbus_object_path: c.GetAll(
3466
"se.recompile.Mandos.Client")
3467
for c in tcp_server.clients.values()},
2346
3468
signature="oa{sv}")
2347
3469
2348
3470
@dbus.service.method(_interface, in_signature="o")
2349
3471
def RemoveClient(self, object_path):
2350
3472
"D-Bus method"
2351
for c in tcp_server.clients.itervalues():
3473
for c in tcp_server.clients.values():
2352
3474
if c.dbus_object_path == object_path:
2353
3475
del tcp_server.clients[c.name]
2354
3476
c.remove_from_connection()
2355
# Don't signal anything except ClientRemoved
3477
# Don't signal the disabling
2356
3478
c.disable(quiet=True)
2357
# Emit D-Bus signal
2358
self.ClientRemoved(object_path, c.name)
3479
# Emit D-Bus signal for removal
3480
self.client_removed_signal(c)
2359
3481
return
2360
3482
raise KeyError(object_path)
2361
3483
2362
3484
del _interface
2363
2364
class MandosDBusServiceTransitional(MandosDBusService):
2365
__metaclass__ = AlternateDBusNamesMetaclass
2366
mandos_dbus_service = MandosDBusServiceTransitional()
2367
3485
3486
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3487
out_signature="a{oa{sa{sv}}}")
3488
def GetManagedObjects(self):
3489
"""D-Bus method"""
3490
return dbus.Dictionary(
3491
{client.dbus_object_path:
3492
dbus.Dictionary(
3493
{interface: client.GetAll(interface)
3494
for interface in
3495
client._get_all_interface_names()})
3496
for client in tcp_server.clients.values()})
3497
3498
def client_added_signal(self, client):
3499
"""Send the new standard signal and the old signal"""
3500
if use_dbus:
3501
# New standard signal
3502
self.InterfacesAdded(
3503
client.dbus_object_path,
3504
dbus.Dictionary(
3505
{interface: client.GetAll(interface)
3506
for interface in
3507
client._get_all_interface_names()}))
3508
# Old signal
3509
self.ClientAdded(client.dbus_object_path)
3510
3511
def client_removed_signal(self, client):
3512
"""Send the new standard signal and the old signal"""
3513
if use_dbus:
3514
# New standard signal
3515
self.InterfacesRemoved(
3516
client.dbus_object_path,
3517
client._get_all_interface_names())
3518
# Old signal
3519
self.ClientRemoved(client.dbus_object_path,
3520
client.name)
3521
3522
mandos_dbus_service = MandosDBusService()
3523
3524
# Save modules to variables to exempt the modules from being
3525
# unloaded before the function registered with atexit() is run.
3526
mp = multiprocessing
3527
wn = wnull
3528
2368
3529
def cleanup():
2369
3530
"Cleanup function; run on exit"
2370
service.cleanup()
2371
2372
multiprocessing.active_children()
3531
if zeroconf:
3532
service.cleanup()
3533
3534
mp.active_children()
3535
wn.close()
2373
3536
if not (tcp_server.clients or client_settings):
2374
3537
return
2375
3538
2376
3539
# Store client before exiting. Secrets are encrypted with key
2377
3540
# based on what config file has. If config file is
2378
3541
# removed/edited, old secret will thus be unrecovable.
2379
3542
clients = {}
2380
3543
with PGPEngine() as pgp:
2381
for client in tcp_server.clients.itervalues():
3544
for client in tcp_server.clients.values():
2382
3545
key = client_settings[client.name]["secret"]
2383
3546
client.encrypted_secret = pgp.encrypt(client.secret,
2384
3547
key)
2385
3548
client_dict = {}
2386
3549
2387
3550
# A list of attributes that can not be pickled
2388
3551
# + secret.
2389
exclude = set(("bus", "changedstate", "secret",
2390
"checker"))
2391
for name, typ in (inspect.getmembers
2392
(dbus.service.Object)):
3552
exclude = {"bus", "changedstate", "secret",
3553
"checker", "server_settings"}
3554
for name, typ in inspect.getmembers(dbus.service
3555
.Object):
2393
3556
exclude.add(name)
2394
3557
2395
3558
client_dict["encrypted_secret"] = (client
2396
3559
.encrypted_secret)
2397
3560
for attr in client.client_structure:
2398
3561
if attr not in exclude:
2399
3562
client_dict[attr] = getattr(client, attr)
2400
3563
2401
3564
clients[client.name] = client_dict
2402
3565
del client_settings[client.name]["secret"]
2403
3566
2404
3567
try:
2405
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2406
prefix="clients-",
2407
dir=os.path.dirname
2408
(stored_state_path))
2409
with os.fdopen(tempfd, "wb") as stored_state:
2410
pickle.dump((clients, client_settings), stored_state)
3568
with tempfile.NamedTemporaryFile(
3569
mode="wb",
3570
suffix=".pickle",
3571
prefix="clients-",
3572
dir=os.path.dirname(stored_state_path),
3573
delete=False) as stored_state:
3574
pickle.dump((clients, client_settings), stored_state,
3575
protocol=2)
3576
tempname = stored_state.name
2411
3577
os.rename(tempname, stored_state_path)
2412
3578
except (IOError, OSError) as e:
2413
logger.warning("Could not save persistent state: {0}"
2414
.format(e))
2415
3579
if not debug:
2416
3580
try:
2417
3581
os.remove(tempname)
2418
3582
except NameError:
2419
3583
pass
2420
if e.errno not in set((errno.ENOENT, errno.EACCES,
2421
errno.EEXIST)):
2422
raise e
2423
3584
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3585
log.warning("Could not save persistent state: %s",
3586
os.strerror(e.errno))
3587
else:
3588
log.warning("Could not save persistent state:",
3589
exc_info=e)
3590
raise
3591
2424
3592
# Delete all clients, and settings from config
2425
3593
while tcp_server.clients:
2426
3594
name, client = tcp_server.clients.popitem()
2427
3595
if use_dbus:
2428
3596
client.remove_from_connection()
2429
# Don't signal anything except ClientRemoved
3597
# Don't signal the disabling
2430
3598
client.disable(quiet=True)
3599
# Emit D-Bus signal for removal
2431
3600
if use_dbus:
2432
# Emit D-Bus signal
2433
mandos_dbus_service.ClientRemoved(client
2434
.dbus_object_path,
2435
client.name)
3601
mandos_dbus_service.client_removed_signal(client)
2436
3602
client_settings.clear()
2437
3603
2438
3604
atexit.register(cleanup)
2439
2440
for client in tcp_server.clients.itervalues():
3605
3606
for client in tcp_server.clients.values():
2441
3607
if use_dbus:
2442
# Emit D-Bus signal
2443
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3608
# Emit D-Bus signal for adding
3609
mandos_dbus_service.client_added_signal(client)
2444
3610
# Need to initiate checking of clients
2445
3611
if client.enabled:
2446
3612
client.init_checker()
2447
3613
2448
3614
tcp_server.enable()
2449
3615
tcp_server.server_activate()
2450
3616
2451
3617
# Find out what port we got
2452
service.port = tcp_server.socket.getsockname()[1]
3618
if zeroconf:
3619
service.port = tcp_server.socket.getsockname()[1]
2453
3620
if use_ipv6:
2454
logger.info("Now listening on address %r, port %d,"
2455
" flowinfo %d, scope_id %d"
2456
% tcp_server.socket.getsockname())
3621
log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
" scope_id %d", *tcp_server.socket.getsockname())
2457
3623
else: # IPv4
2458
logger.info("Now listening on address %r, port %d"
2459
% tcp_server.socket.getsockname())
2460
2461
#service.interface = tcp_server.socket.getsockname()[3]
2462
3624
log.info("Now listening on address %r, port %d",
3625
*tcp_server.socket.getsockname())
3626
3627
# service.interface = tcp_server.socket.getsockname()[3]
3628
2463
3629
try:
2464
# From the Avahi example code
2465
try:
2466
service.activate()
2467
except dbus.exceptions.DBusException as error:
2468
logger.critical("DBusException: %s", error)
2469
cleanup()
2470
sys.exit(1)
2471
# End of Avahi example code
2472
2473
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2474
lambda *args, **kwargs:
2475
(tcp_server.handle_request
2476
(*args[2:], **kwargs) or True))
2477
2478
logger.debug("Starting main loop")
3630
if zeroconf:
3631
# From the Avahi example code
3632
try:
3633
service.activate()
3634
except dbus.exceptions.DBusException as error:
3635
log.critical("D-Bus Exception", exc_info=error)
3636
cleanup()
3637
sys.exit(1)
3638
# End of Avahi example code
3639
3640
GLib.io_add_watch(
3641
GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
lambda *args, **kwargs: (tcp_server.handle_request
3644
(*args[2:], **kwargs) or True))
3645
3646
log.debug("Starting main loop")
2479
3647
main_loop.run()
2480
3648
except AvahiError as error:
2481
logger.critical("AvahiError: %s", error)
3649
log.critical("Avahi Error", exc_info=error)
2482
3650
cleanup()
2483
3651
sys.exit(1)
2484
3652
except KeyboardInterrupt:
2485
3653
if debug:
2486
3654
print("", file=sys.stderr)
2487
logger.debug("Server received KeyboardInterrupt")
2488
logger.debug("Server exiting")
3655
log.debug("Server received KeyboardInterrupt")
3656
log.debug("Server exiting")
2489
3657
# Must run before the D-Bus bus name gets deregistered
2490
3658
cleanup()
2491
3659
2492
if __name__ == '__main__':
2493
main()
3660
3661
def parse_test_args():
3662
# type: () -> argparse.Namespace
3663
parser = argparse.ArgumentParser(add_help=False)
3664
parser.add_argument("--check", action="store_true")
3665
parser.add_argument("--prefix", )
3666
args, unknown_args = parser.parse_known_args()
3667
if args.check:
3668
# Remove test options from sys.argv
3669
sys.argv[1:] = unknown_args
3670
return args
3671
3672
# Add all tests from doctest strings
3673
def load_tests(loader, tests, none):
3674
import doctest
3675
tests.addTests(doctest.DocTestSuite())
3676
return tests
3677
3678
if __name__ == "__main__":
3679
options = parse_test_args()
3680
try:
3681
if options.check:
3682
extra_test_prefix = options.prefix
3683
if extra_test_prefix is not None:
3684
if not (unittest.main(argv=[""], exit=False)
3685
.result.wasSuccessful()):
3686
sys.exit(1)
3687
class ExtraTestLoader(unittest.TestLoader):
3688
testMethodPrefix = extra_test_prefix
3689
# Call using ./scriptname --test [--verbose]
3690
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3691
else:
3692
unittest.main(argv=[""])
3693
else:
3694
main()
3695
finally:
3696
logging.shutdown()
3697
3698
# Local Variables:
3699
# run-tests:
3700
# (lambda (&optional extra)
3701
# (if (not (funcall run-tests-in-test-buffer default-directory
3702
# extra))
3703
# (funcall show-test-buffer-in-test-window)
3704
# (funcall remove-test-window)
3705
# (if extra (message "Extra tests run successfully!"))))
3706
# run-tests-in-test-buffer:
3707
# (lambda (dir &optional extra)
3708
# (with-current-buffer (get-buffer-create "*Test*")
3709
# (setq buffer-read-only nil
3710
# default-directory dir)
3711
# (erase-buffer)
3712
# (compilation-mode))
3713
# (let ((process-result
3714
# (let ((inhibit-read-only t))
3715
# (process-file-shell-command
3716
# (funcall get-command-line extra) nil "*Test*"))))
3717
# (and (numberp process-result)
3718
# (= process-result 0))))
3719
# get-command-line:
3720
# (lambda (&optional extra)
3721
# (let ((quoted-script
3722
# (shell-quote-argument (funcall get-script-name))))
3723
# (format
3724
# (concat "%s --check" (if extra " --prefix=atest" ""))
3725
# quoted-script)))
3726
# get-script-name:
3727
# (lambda ()
3728
# (if (fboundp 'file-local-name)
3729
# (file-local-name (buffer-file-name))
3730
# (or (file-remote-p (buffer-file-name) 'localname)
3731
# (buffer-file-name))))
3732
# remove-test-window:
3733
# (lambda ()
3734
# (let ((test-window (get-buffer-window "*Test*")))
3735
# (if test-window (delete-window test-window))))
3736
# show-test-buffer-in-test-window:
3737
# (lambda ()
3738
# (when (not (get-buffer-window-list "*Test*"))
3739
# (setq next-error-last-buffer (get-buffer "*Test*"))
3740
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3741
# (display-buffer-overriding-action
3742
# `((display-buffer-in-side-window) (side . ,side)
3743
# (window-height . fit-window-to-buffer)
3744
# (window-width . fit-window-to-buffer))))
3745
# (display-buffer "*Test*"))))
3746
# eval:
3747
# (progn
3748
# (let* ((run-extra-tests (lambda () (interactive)
3749
# (funcall run-tests t)))
3750
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3751
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3752
# (setq minor-mode-overriding-map-alist
3753
# (cons `(run-tests . ,outer-keymap)
3754
# minor-mode-overriding-map-alist)))
3755
# (add-hook 'after-save-hook run-tests 90 t))
3756
# End:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0