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- Committer: Teddy Hogeborn
- Date: 2023-02-11 06:58:15 UTC
- Revision ID: teddy@recompile.se-20230211065815-jtffi61tbdrgr875
Suppress warnings
Suppress warnings about mlock()ing uninitialized memory and reading an
ievent struct.
* dracut-module/password-agent.c (send_password_to_socket): Suppress
"-Wmaybe-uninitialized" when mlock()ing password send buffer.
(test_read_inotify_event_IN_DELETE_badname): When reading from
a struct ievent, suppress "-Wstringop-overread".
Suppress warnings about mlock()ing uninitialized memory and reading an
ievent struct.
* dracut-module/password-agent.c (send_password_to_socket): Suppress
"-Wmaybe-uninitialized" when mlock()ing password send buffer.
(test_read_inotify_event_IN_DELETE_badname): When reading from
a struct ievent, suppress "-Wstringop-overread".
- 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 = "1.5.0"
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 = "1.8.16"
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
422
912
secret: bytestring; sent verbatim (over TLS) to client
423
913
timeout: datetime.timedelta(); How long from last_checked_ok
424
914
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
915
extended_timeout: extra long timeout when secret has been sent
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
self.expires = datetime.datetime.utcnow() + self.timeout
571
1048
self.enabled = True
572
1049
self.last_enabled = datetime.datetime.utcnow()
573
1050
self.init_checker()
574
1051
self.send_changedstate()
1052
575
1053
def disable(self, quiet=True):
576
1054
"""Disable this client."""
577
1055
if not getattr(self, "enabled", False):
578
1056
return False
579
1057
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)
1058
log.info("Disabling client %s", self.name)
1059
if getattr(self, "disable_initiator_tag", None) is not None:
1060
GLib.source_remove(self.disable_initiator_tag)
585
1061
self.disable_initiator_tag = None
586
1062
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1063
if getattr(self, "checker_initiator_tag", None) is not None:
1064
GLib.source_remove(self.checker_initiator_tag)
589
1065
self.checker_initiator_tag = None
590
1066
self.stop_checker()
591
1067
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
1068
if not quiet:
1069
self.send_changedstate()
1070
# Do not run this again if called by a GLib.timeout_add
593
1071
return False
594
1072
595
1073
def __del__(self):
596
1074
self.disable()
597
598
def init_checker(self):
599
# Schedule a new checker to be started an 'interval' from now,
600
# and every interval from then on.
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
self.start_checker))
604
# Schedule a disable() when 'timeout' has passed
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
self.disable))
608
# Also start a new checker *right now*.
609
self.start_checker()
610
611
def checker_callback(self, pid, condition, command):
1075
1076
def init_checker(self, randomize_start=False):
1077
# Schedule a new checker to be started a randomly selected
1078
# time (a fraction of 'interval') from now. This spreads out
1079
# the startup of checkers over time when the server is
1080
# started.
1081
if self.checker_initiator_tag is not None:
1082
GLib.source_remove(self.checker_initiator_tag)
1083
interval_milliseconds = int(self.interval.total_seconds()
1084
* 1000)
1085
if randomize_start:
1086
delay_milliseconds = random.randrange(
1087
interval_milliseconds + 1)
1088
else:
1089
delay_milliseconds = interval_milliseconds
1090
self.checker_initiator_tag = GLib.timeout_add(
1091
delay_milliseconds, self.start_checker, randomize_start)
1092
delay = datetime.timedelta(0, 0, 0, delay_milliseconds)
1093
# A checker might take up to an 'interval' of time, so we can
1094
# expire at the soonest one interval after a checker was
1095
# started. Since the initial checker is delayed, the expire
1096
# time might have to be extended.
1097
now = datetime.datetime.utcnow()
1098
self.expires = now + delay + self.interval
1099
# Schedule a disable() at expire time
1100
if self.disable_initiator_tag is not None:
1101
GLib.source_remove(self.disable_initiator_tag)
1102
self.disable_initiator_tag = GLib.timeout_add(
1103
int((self.expires - now).total_seconds() * 1000),
1104
self.disable)
1105
1106
def checker_callback(self, source, condition, connection,
1107
command):
612
1108
"""The checker has completed, so take appropriate actions."""
1109
# Read return code from connection (see call_pipe)
1110
returncode = connection.recv()
1111
connection.close()
1112
if self.checker is not None:
1113
self.checker.join()
613
1114
self.checker_callback_tag = None
614
1115
self.checker = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1116
1117
if returncode >= 0:
1118
self.last_checker_status = returncode
1119
self.last_checker_signal = None
617
1120
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
619
vars(self))
1121
log.info("Checker for %(name)s succeeded", vars(self))
620
1122
self.checked_ok()
621
1123
else:
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1124
log.info("Checker for %(name)s failed", vars(self))
624
1125
else:
625
1126
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
"""
1127
self.last_checker_signal = -returncode
1128
log.warning("Checker for %(name)s crashed?", vars(self))
1129
return False
1130
1131
def checked_ok(self):
1132
"""Assert that the client has been seen, alive and well."""
1133
self.last_checked_ok = datetime.datetime.utcnow()
1134
self.last_checker_status = 0
1135
self.last_checker_signal = None
1136
self.bump_timeout()
1137
1138
def bump_timeout(self, timeout=None):
1139
"""Bump up the timeout for this client."""
635
1140
if timeout is None:
636
1141
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
638
1142
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
1143
GLib.source_remove(self.disable_initiator_tag)
1144
self.disable_initiator_tag = None
640
1145
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1146
self.disable_initiator_tag = GLib.timeout_add(
1147
int(timeout.total_seconds() * 1000), self.disable)
644
1148
self.expires = datetime.datetime.utcnow() + timeout
645
1149
646
1150
def need_approval(self):
647
1151
self.last_approval_request = datetime.datetime.utcnow()
648
649
def start_checker(self):
1152
1153
def start_checker(self, start_was_randomized=False):
650
1154
"""Start a new checker subprocess if one is not running.
651
1155
652
1156
If a checker already exists, leave it running and do
653
1157
nothing."""
654
1158
# 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
1159
# did that, and if a checker (for some reason) started running
1160
# slowly and taking more than 'interval' time, then the client
1161
# would inevitably timeout, since no checker would get a
1162
# chance to run to completion. If we instead leave running
659
1163
# checkers alone, the checker would have to take more time
660
1164
# than 'timeout' for the client to be disabled, which is as it
661
1165
# 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)
1166
1167
if self.checker is not None and not self.checker.is_alive():
1168
log.warning("Checker was not alive; joining")
1169
self.checker.join()
1170
self.checker = None
676
1171
# Start a new checker if needed
677
1172
if self.checker is None:
1173
# Escape attributes for the shell
1174
escaped_attrs = {
1175
attr: shlex.quote(str(getattr(self, attr)))
1176
for attr in self.runtime_expansions}
678
1177
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
1178
command = self.checker_command % escaped_attrs
1179
except TypeError as error:
1180
log.error('Could not format string "%s"',
1181
self.checker_command, exc_info=error)
1182
return True # Try again later
697
1183
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
1184
log.info("Starting checker %r for %s", command, self.name)
1185
# We don't need to redirect stdout and stderr, since
1186
# in normal mode, that is already done by daemon(),
1187
# and in debug mode we don't want to. (Stdin is
1188
# always replaced by /dev/null.)
1189
# The exception is when not debugging but nevertheless
1190
# running in the foreground; use the previously
1191
# created wnull.
1192
popen_args = {"close_fds": True,
1193
"shell": True,
1194
"cwd": "/"}
1195
if (not self.server_settings["debug"]
1196
and self.server_settings["foreground"]):
1197
popen_args.update({"stdout": wnull,
1198
"stderr": wnull})
1199
pipe = multiprocessing.Pipe(duplex=False)
1200
self.checker = multiprocessing.Process(
1201
target=call_pipe,
1202
args=(pipe[1], subprocess.call, command),
1203
kwargs=popen_args)
1204
self.checker.start()
1205
self.checker_callback_tag = GLib.io_add_watch(
1206
GLib.IOChannel.unix_new(pipe[0].fileno()),
1207
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1208
self.checker_callback, pipe[0], command)
1209
if start_was_randomized:
1210
# We were started after a random delay; Schedule a new
1211
# checker to be started an 'interval' from now, and every
1212
# interval from then on.
1213
now = datetime.datetime.utcnow()
1214
self.checker_initiator_tag = GLib.timeout_add(
1215
int(self.interval.total_seconds() * 1000),
1216
self.start_checker)
1217
self.expires = max(self.expires, now + self.interval)
1218
# Don't start a new checker again after same random delay
1219
return False
1220
# Re-run this periodically if run by GLib.timeout_add
722
1221
return True
723
1222
724
1223
def stop_checker(self):
725
1224
"""Force the checker process, if any, to stop."""
726
1225
if self.checker_callback_tag:
727
gobject.source_remove(self.checker_callback_tag)
1226
GLib.source_remove(self.checker_callback_tag)
728
1227
self.checker_callback_tag = None
729
1228
if getattr(self, "checker", None) is None:
730
1229
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
1230
log.debug("Stopping checker for %(name)s", vars(self))
1231
self.checker.terminate()
740
1232
self.checker = None
741
1233
742
1234
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1235
def dbus_service_property(dbus_interface,
1236
signature="v",
1237
access="readwrite",
1238
byte_arrays=False):
745
1239
"""Decorators for marking methods of a DBusObjectWithProperties to
746
1240
become properties on the D-Bus.
747
1241
748
1242
The decorated method will be called with no arguments by "Get"
749
1243
and with one argument by "Set".
750
1244
751
1245
The parameters, where they are supported, are the same as
752
1246
dbus.service.method, except there is only "signature", since the
753
1247
type from Get() and the type sent to Set() is the same.
756
1250
# "Set" method, so we fail early here:
757
1251
if byte_arrays and signature != "ay":
758
1252
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
1253
" signature {!r}".format(signature))
1254
760
1255
def decorator(func):
761
1256
func._dbus_is_property = True
762
1257
func._dbus_interface = dbus_interface
765
1260
func._dbus_name = func.__name__
766
1261
if func._dbus_name.endswith("_dbus_property"):
767
1262
func._dbus_name = func._dbus_name[:-14]
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
return func
1263
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1264
return func
1265
1266
return decorator
1267
1268
1269
def dbus_interface_annotations(dbus_interface):
1270
"""Decorator for marking functions returning interface annotations
1271
1272
Usage:
1273
1274
@dbus_interface_annotations("org.example.Interface")
1275
def _foo(self): # Function name does not matter
1276
return {"org.freedesktop.DBus.Deprecated": "true",
1277
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1278
"false"}
1279
"""
1280
1281
def decorator(func):
1282
func._dbus_is_interface = True
1283
func._dbus_interface = dbus_interface
1284
func._dbus_name = dbus_interface
1285
return func
1286
1287
return decorator
1288
1289
1290
def dbus_annotations(annotations):
1291
"""Decorator to annotate D-Bus methods, signals or properties
1292
Usage:
1293
1294
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1295
"org.freedesktop.DBus.Property."
1296
"EmitsChangedSignal": "false"})
1297
@dbus_service_property("org.example.Interface", signature="b",
1298
access="r")
1299
def Property_dbus_property(self):
1300
return dbus.Boolean(False)
1301
1302
See also the DBusObjectWithAnnotations class.
1303
"""
1304
1305
def decorator(func):
1306
func._dbus_annotations = annotations
1307
return func
1308
770
1309
return decorator
771
1310
772
1311
773
1312
class DBusPropertyException(dbus.exceptions.DBusException):
774
1313
"""A base class for D-Bus property-related exceptions
775
1314
"""
776
def __unicode__(self):
777
return unicode(str(self))
1315
pass
778
1316
779
1317
780
1318
class DBusPropertyAccessException(DBusPropertyException):
789
1327
pass
790
1328
791
1329
792
class DBusObjectWithProperties(dbus.service.Object):
1330
class DBusObjectWithAnnotations(dbus.service.Object):
1331
"""A D-Bus object with annotations.
1332
1333
Classes inheriting from this can use the dbus_annotations
1334
decorator to add annotations to methods or signals.
1335
"""
1336
1337
@staticmethod
1338
def _is_dbus_thing(thing):
1339
"""Returns a function testing if an attribute is a D-Bus thing
1340
1341
If called like _is_dbus_thing("method") it returns a function
1342
suitable for use as predicate to inspect.getmembers().
1343
"""
1344
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1345
False)
1346
1347
def _get_all_dbus_things(self, thing):
1348
"""Returns a generator of (name, attribute) pairs
1349
"""
1350
return ((getattr(athing.__get__(self), "_dbus_name", name),
1351
athing.__get__(self))
1352
for cls in self.__class__.__mro__
1353
for name, athing in
1354
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1355
1356
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1357
out_signature="s",
1358
path_keyword="object_path",
1359
connection_keyword="connection")
1360
def Introspect(self, object_path, connection):
1361
"""Overloading of standard D-Bus method.
1362
1363
Inserts annotation tags on methods and signals.
1364
"""
1365
xmlstring = dbus.service.Object.Introspect(self, object_path,
1366
connection)
1367
try:
1368
document = xml.dom.minidom.parseString(xmlstring)
1369
1370
for if_tag in document.getElementsByTagName("interface"):
1371
# Add annotation tags
1372
for typ in ("method", "signal"):
1373
for tag in if_tag.getElementsByTagName(typ):
1374
annots = dict()
1375
for name, prop in (self.
1376
_get_all_dbus_things(typ)):
1377
if (name == tag.getAttribute("name")
1378
and prop._dbus_interface
1379
== if_tag.getAttribute("name")):
1380
annots.update(getattr(
1381
prop, "_dbus_annotations", {}))
1382
for name, value in annots.items():
1383
ann_tag = document.createElement(
1384
"annotation")
1385
ann_tag.setAttribute("name", name)
1386
ann_tag.setAttribute("value", value)
1387
tag.appendChild(ann_tag)
1388
# Add interface annotation tags
1389
for annotation, value in dict(
1390
itertools.chain.from_iterable(
1391
annotations().items()
1392
for name, annotations
1393
in self._get_all_dbus_things("interface")
1394
if name == if_tag.getAttribute("name")
1395
)).items():
1396
ann_tag = document.createElement("annotation")
1397
ann_tag.setAttribute("name", annotation)
1398
ann_tag.setAttribute("value", value)
1399
if_tag.appendChild(ann_tag)
1400
# Fix argument name for the Introspect method itself
1401
if (if_tag.getAttribute("name")
1402
== dbus.INTROSPECTABLE_IFACE):
1403
for cn in if_tag.getElementsByTagName("method"):
1404
if cn.getAttribute("name") == "Introspect":
1405
for arg in cn.getElementsByTagName("arg"):
1406
if (arg.getAttribute("direction")
1407
== "out"):
1408
arg.setAttribute("name",
1409
"xml_data")
1410
xmlstring = document.toxml("utf-8")
1411
document.unlink()
1412
except (AttributeError, xml.dom.DOMException,
1413
xml.parsers.expat.ExpatError) as error:
1414
log.error("Failed to override Introspection method",
1415
exc_info=error)
1416
return xmlstring
1417
1418
1419
class DBusObjectWithProperties(DBusObjectWithAnnotations):
793
1420
"""A D-Bus object with properties.
794
1421
795
1422
Classes inheriting from this can use the dbus_service_property
796
1423
decorator to expose methods as D-Bus properties. It exposes the
797
1424
standard Get(), Set(), and GetAll() methods on the D-Bus.
798
1425
"""
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
1426
812
1427
def _get_dbus_property(self, interface_name, property_name):
813
1428
"""Returns a bound method if one exists which is a D-Bus
814
1429
property with the specified name and interface.
815
1430
"""
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1431
for cls in self.__class__.__mro__:
1432
for name, value in inspect.getmembers(
1433
cls, self._is_dbus_thing("property")):
819
1434
if (value._dbus_name == property_name
820
1435
and value._dbus_interface == interface_name):
821
1436
return value.__get__(self)
822
1437
823
1438
# 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",
1439
raise DBusPropertyNotFound("{}:{}.{}".format(
1440
self.dbus_object_path, interface_name, property_name))
1441
1442
@classmethod
1443
def _get_all_interface_names(cls):
1444
"""Get a sequence of all interfaces supported by an object"""
1445
return (name for name in set(getattr(getattr(x, attr),
1446
"_dbus_interface", None)
1447
for x in (inspect.getmro(cls))
1448
for attr in dir(x))
1449
if name is not None)
1450
1451
@dbus.service.method(dbus.PROPERTIES_IFACE,
1452
in_signature="ss",
829
1453
out_signature="v")
830
1454
def Get(self, interface_name, property_name):
831
1455
"""Standard D-Bus property Get() method, see D-Bus standard.
837
1461
if not hasattr(value, "variant_level"):
838
1462
return value
839
1463
return type(value)(value, variant_level=value.variant_level+1)
840
1464
841
1465
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
842
1466
def Set(self, interface_name, property_name, value):
843
1467
"""Standard D-Bus property Set() method, see D-Bus standard.
849
1473
# The byte_arrays option is not supported yet on
850
1474
# signatures other than "ay".
851
1475
if prop._dbus_signature != "ay":
852
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
1476
raise ValueError("Byte arrays not supported for non-"
1477
"'ay' signature {!r}"
1478
.format(prop._dbus_signature))
1479
value = dbus.ByteArray(bytes(value))
855
1480
prop(value)
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1481
1482
@dbus.service.method(dbus.PROPERTIES_IFACE,
1483
in_signature="s",
858
1484
out_signature="a{sv}")
859
1485
def GetAll(self, interface_name):
860
1486
"""Standard D-Bus property GetAll() method, see D-Bus
861
1487
standard.
862
1488
863
1489
Note: Will not include properties with access="write".
864
1490
"""
865
1491
properties = {}
866
for name, prop in self._get_all_dbus_properties():
1492
for name, prop in self._get_all_dbus_things("property"):
867
1493
if (interface_name
868
1494
and interface_name != prop._dbus_interface):
869
1495
# Interface non-empty but did not match
875
1501
if not hasattr(value, "variant_level"):
876
1502
properties[name] = value
877
1503
continue
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1504
properties[name] = type(value)(
1505
value, variant_level=value.variant_level + 1)
880
1506
return dbus.Dictionary(properties, signature="sv")
881
1507
1508
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1509
def PropertiesChanged(self, interface_name, changed_properties,
1510
invalidated_properties):
1511
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1512
standard.
1513
"""
1514
pass
1515
882
1516
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
1517
out_signature="s",
884
path_keyword='object_path',
885
connection_keyword='connection')
1518
path_keyword="object_path",
1519
connection_keyword="connection")
886
1520
def Introspect(self, object_path, connection):
887
"""Standard D-Bus method, overloaded to insert property tags.
1521
"""Overloading of standard D-Bus method.
1522
1523
Inserts property tags and interface annotation tags.
888
1524
"""
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1525
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1526
object_path,
1527
connection)
891
1528
try:
892
1529
document = xml.dom.minidom.parseString(xmlstring)
1530
893
1531
def make_tag(document, name, prop):
894
1532
e = document.createElement("property")
895
1533
e.setAttribute("name", name)
896
1534
e.setAttribute("type", prop._dbus_signature)
897
1535
e.setAttribute("access", prop._dbus_access)
898
1536
return e
1537
899
1538
for if_tag in document.getElementsByTagName("interface"):
1539
# Add property tags
900
1540
for tag in (make_tag(document, name, prop)
901
1541
for name, prop
902
in self._get_all_dbus_properties()
1542
in self._get_all_dbus_things("property")
903
1543
if prop._dbus_interface
904
1544
== if_tag.getAttribute("name")):
905
1545
if_tag.appendChild(tag)
1546
# Add annotation tags for properties
1547
for tag in if_tag.getElementsByTagName("property"):
1548
annots = dict()
1549
for name, prop in self._get_all_dbus_things(
1550
"property"):
1551
if (name == tag.getAttribute("name")
1552
and prop._dbus_interface
1553
== if_tag.getAttribute("name")):
1554
annots.update(getattr(
1555
prop, "_dbus_annotations", {}))
1556
for name, value in annots.items():
1557
ann_tag = document.createElement(
1558
"annotation")
1559
ann_tag.setAttribute("name", name)
1560
ann_tag.setAttribute("value", value)
1561
tag.appendChild(ann_tag)
906
1562
# Add the names to the return values for the
907
1563
# "org.freedesktop.DBus.Properties" methods
908
1564
if (if_tag.getAttribute("name")
922
1578
document.unlink()
923
1579
except (AttributeError, xml.dom.DOMException,
924
1580
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):
1581
log.error("Failed to override Introspection method",
1582
exc_info=error)
1583
return xmlstring
1584
1585
1586
try:
1587
dbus.OBJECT_MANAGER_IFACE
1588
except AttributeError:
1589
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1590
1591
1592
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1593
"""A D-Bus object with an ObjectManager.
1594
1595
Classes inheriting from this exposes the standard
1596
GetManagedObjects call and the InterfacesAdded and
1597
InterfacesRemoved signals on the standard
1598
"org.freedesktop.DBus.ObjectManager" interface.
1599
1600
Note: No signals are sent automatically; they must be sent
1601
manually.
1602
"""
1603
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1604
out_signature="a{oa{sa{sv}}}")
1605
def GetManagedObjects(self):
1606
"""This function must be overridden"""
1607
raise NotImplementedError()
1608
1609
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1610
signature="oa{sa{sv}}")
1611
def InterfacesAdded(self, object_path, interfaces_and_properties):
1612
pass
1613
1614
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1615
def InterfacesRemoved(self, object_path, interfaces):
1616
pass
1617
1618
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1619
out_signature="s",
1620
path_keyword="object_path",
1621
connection_keyword="connection")
1622
def Introspect(self, object_path, connection):
1623
"""Overloading of standard D-Bus method.
1624
1625
Override return argument name of GetManagedObjects to be
1626
"objpath_interfaces_and_properties"
1627
"""
1628
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1629
object_path,
1630
connection)
1631
try:
1632
document = xml.dom.minidom.parseString(xmlstring)
1633
1634
for if_tag in document.getElementsByTagName("interface"):
1635
# Fix argument name for the GetManagedObjects method
1636
if (if_tag.getAttribute("name")
1637
== dbus.OBJECT_MANAGER_IFACE):
1638
for cn in if_tag.getElementsByTagName("method"):
1639
if (cn.getAttribute("name")
1640
== "GetManagedObjects"):
1641
for arg in cn.getElementsByTagName("arg"):
1642
if (arg.getAttribute("direction")
1643
== "out"):
1644
arg.setAttribute(
1645
"name",
1646
"objpath_interfaces"
1647
"_and_properties")
1648
xmlstring = document.toxml("utf-8")
1649
document.unlink()
1650
except (AttributeError, xml.dom.DOMException,
1651
xml.parsers.expat.ExpatError) as error:
1652
log.error("Failed to override Introspection method",
1653
exc_info=error)
1654
return xmlstring
1655
1656
1657
def datetime_to_dbus(dt, variant_level=0):
931
1658
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
1659
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.
1660
return dbus.String("", variant_level=variant_level)
1661
return dbus.String(dt.isoformat(), variant_level=variant_level)
1662
1663
1664
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1665
"""A class decorator; applied to a subclass of
1666
dbus.service.Object, it will add alternate D-Bus attributes with
1667
interface names according to the "alt_interface_names" mapping.
1668
Usage:
1669
1670
@alternate_dbus_interfaces({"org.example.Interface":
1671
"net.example.AlternateInterface"})
1672
class SampleDBusObject(dbus.service.Object):
1673
@dbus.service.method("org.example.Interface")
1674
def SampleDBusMethod():
1675
pass
1676
1677
The above "SampleDBusMethod" on "SampleDBusObject" will be
1678
reachable via two interfaces: "org.example.Interface" and
1679
"net.example.AlternateInterface", the latter of which will have
1680
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1681
"true", unless "deprecate" is passed with a False value.
1682
1683
This works for methods and signals, and also for D-Bus properties
1684
(from DBusObjectWithProperties) and interfaces (from the
1685
dbus_interface_annotations decorator).
942
1686
"""
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):
1687
1688
def wrapper(cls):
1689
for orig_interface_name, alt_interface_name in (
1690
alt_interface_names.items()):
1691
attr = {}
1692
interface_names = set()
1693
# Go though all attributes of the class
1694
for attrname, attribute in inspect.getmembers(cls):
950
1695
# Ignore non-D-Bus attributes, and D-Bus attributes
951
1696
# with the wrong interface name
952
1697
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1698
or not attribute._dbus_interface.startswith(
1699
orig_interface_name)):
955
1700
continue
956
1701
# Create an alternate D-Bus interface name based on
957
1702
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1703
alt_interface = attribute._dbus_interface.replace(
1704
orig_interface_name, alt_interface_name)
1705
interface_names.add(alt_interface)
961
1706
# Is this a D-Bus signal?
962
1707
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
1708
# Extract the original non-method undecorated
1709
# function by black magic
1710
if sys.version_info.major == 2:
1711
nonmethod_func = (dict(
966
1712
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
1713
attribute.__closure__))
1714
["func"].cell_contents)
1715
else:
1716
nonmethod_func = (dict(
1717
zip(attribute.__code__.co_freevars,
1718
attribute.__closure__))
1719
["func"].cell_contents)
969
1720
# Create a new, but exactly alike, function
970
1721
# object, and decorate it to be a new D-Bus signal
971
1722
# 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)))
1723
new_function = copy_function(nonmethod_func)
1724
new_function = (dbus.service.signal(
1725
alt_interface,
1726
attribute._dbus_signature)(new_function))
1727
# Copy annotations, if any
1728
try:
1729
new_function._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1732
pass
1733
981
1734
# 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
1735
# original and alternate functions, so both the
1736
# original and alternate signals gets sent when
1737
# the function is called
984
1738
def fixscope(func1, func2):
985
1739
"""This function is a scope container to pass
986
1740
func1 and func2 to the "call_both" function
987
1741
outside of its arguments"""
1742
1743
@functools.wraps(func2)
988
1744
def call_both(*args, **kwargs):
989
1745
"""This function will emit two D-Bus
990
1746
signals by calling func1 and func2"""
991
1747
func1(*args, **kwargs)
992
1748
func2(*args, **kwargs)
1749
# Make wrapper function look like a D-Bus
1750
# signal
1751
for name, attr in inspect.getmembers(func2):
1752
if name.startswith("_dbus_"):
1753
setattr(call_both, name, attr)
1754
993
1755
return call_both
994
1756
# Create the "call_both" function and add it to
995
1757
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
1758
attr[attrname] = fixscope(attribute, new_function)
998
1759
# Is this a D-Bus method?
999
1760
elif getattr(attribute, "_dbus_is_method", False):
1000
1761
# Create a new, but exactly alike, function
1001
1762
# object. Decorate it to be a new D-Bus method
1002
1763
# with the alternate D-Bus interface name. Add it
1003
1764
# 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)))
1765
attr[attrname] = (
1766
dbus.service.method(
1767
alt_interface,
1768
attribute._dbus_in_signature,
1769
attribute._dbus_out_signature)
1770
(copy_function(attribute)))
1771
# Copy annotations, if any
1772
try:
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1775
except AttributeError:
1776
pass
1014
1777
# Is this a D-Bus property?
1015
1778
elif getattr(attribute, "_dbus_is_property", False):
1016
1779
# Create a new, but exactly alike, function
1017
1780
# object, and decorate it to be a new D-Bus
1018
1781
# property with the alternate D-Bus interface
1019
1782
# 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
1783
attr[attrname] = (dbus_service_property(
1784
alt_interface, attribute._dbus_signature,
1785
attribute._dbus_access,
1786
attribute._dbus_get_args_options
1787
["byte_arrays"])
1788
(copy_function(attribute)))
1789
# Copy annotations, if any
1790
try:
1791
attr[attrname]._dbus_annotations = dict(
1792
attribute._dbus_annotations)
1793
except AttributeError:
1794
pass
1795
# Is this a D-Bus interface?
1796
elif getattr(attribute, "_dbus_is_interface", False):
1797
# Create a new, but exactly alike, function
1798
# object. Decorate it to be a new D-Bus interface
1799
# with the alternate D-Bus interface name. Add it
1800
# to the class.
1801
attr[attrname] = (
1802
dbus_interface_annotations(alt_interface)
1803
(copy_function(attribute)))
1804
if deprecate:
1805
# Deprecate all alternate interfaces
1806
iname = "_AlternateDBusNames_interface_annotation{}"
1807
for interface_name in interface_names:
1808
1809
@dbus_interface_annotations(interface_name)
1810
def func(self):
1811
return {"org.freedesktop.DBus.Deprecated":
1812
"true"}
1813
# Find an unused name
1814
for aname in (iname.format(i)
1815
for i in itertools.count()):
1816
if aname not in attr:
1817
attr[aname] = func
1818
break
1819
if interface_names:
1820
# Replace the class with a new subclass of it with
1821
# methods, signals, etc. as created above.
1822
if sys.version_info.major == 2:
1823
cls = type(b"{}Alternate".format(cls.__name__),
1824
(cls, ), attr)
1825
else:
1826
cls = type("{}Alternate".format(cls.__name__),
1827
(cls, ), attr)
1828
return cls
1829
1830
return wrapper
1831
1832
1833
@alternate_dbus_interfaces({"se.recompile.Mandos":
1834
"se.bsnet.fukt.Mandos"})
1036
1835
class ClientDBus(Client, DBusObjectWithProperties):
1037
1836
"""A Client class using D-Bus
1038
1837
1039
1838
Attributes:
1040
1839
dbus_object_path: dbus.ObjectPath
1041
1840
bus: dbus.SystemBus()
1042
1841
"""
1043
1842
1044
1843
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
1844
+ ("dbus_object_path", ))
1845
1846
_interface = "se.recompile.Mandos.Client"
1847
1047
1848
# dbus.service.Object doesn't use super(), so we can't either.
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1849
1850
def __init__(self, bus=None, *args, **kwargs):
1050
1851
self.bus = bus
1051
1852
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1055
1853
# Only now, when this client is initialized, can it show up on
1056
1854
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1855
client_object_name = str(self.name).translate(
1058
1856
{ord("."): ord("_"),
1059
1857
ord("-"): ord("_")})
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1858
self.dbus_object_path = dbus.ObjectPath(
1859
"/clients/" + client_object_name)
1062
1860
DBusObjectWithProperties.__init__(self, self.bus,
1063
1861
self.dbus_object_path)
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1862
1863
def notifychangeproperty(transform_func, dbus_name,
1864
type_func=lambda x: x,
1865
variant_level=1,
1866
invalidate_only=False,
1867
_interface=_interface):
1068
1868
""" Modify a variable so that it's a property which announces
1069
1869
its changes to DBus.
1070
1870
1071
1871
transform_fun: Function that takes a value and a variant_level
1072
1872
and transforms it to a D-Bus type.
1073
1873
dbus_name: D-Bus name of the variable
1075
1875
to the D-Bus. Default: no transform
1076
1876
variant_level: D-Bus variant level. Default: 1
1077
1877
"""
1078
attrname = "_{0}".format(dbus_name)
1878
attrname = "_{}".format(dbus_name)
1879
1079
1880
def setter(self, value):
1080
1881
if hasattr(self, "dbus_object_path"):
1081
1882
if (not hasattr(self, attrname) or
1082
1883
type_func(getattr(self, attrname, None))
1083
1884
!= type_func(value)):
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1885
if invalidate_only:
1886
self.PropertiesChanged(
1887
_interface, dbus.Dictionary(),
1888
dbus.Array((dbus_name, )))
1889
else:
1890
dbus_value = transform_func(
1891
type_func(value),
1892
variant_level=variant_level)
1893
self.PropertyChanged(dbus.String(dbus_name),
1894
dbus_value)
1895
self.PropertiesChanged(
1896
_interface,
1897
dbus.Dictionary({dbus.String(dbus_name):
1898
dbus_value}),
1899
dbus.Array())
1089
1900
setattr(self, attrname, value)
1090
1901
1091
1902
return property(lambda self: getattr(self, attrname), setter)
1092
1093
1903
1094
1904
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1095
1905
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
1906
"ApprovalPending",
1097
type_func = bool)
1907
type_func=bool)
1098
1908
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
1909
last_enabled = notifychangeproperty(datetime_to_dbus,
1100
1910
"LastEnabled")
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1911
checker = notifychangeproperty(
1912
dbus.Boolean, "CheckerRunning",
1913
type_func=lambda checker: checker is not None)
1104
1914
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
1915
"LastCheckedOK")
1916
last_checker_status = notifychangeproperty(dbus.Int16,
1917
"LastCheckerStatus")
1106
1918
last_approval_request = notifychangeproperty(
1107
1919
datetime_to_dbus, "LastApprovalRequest")
1108
1920
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
1921
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1922
approval_delay = notifychangeproperty(
1923
dbus.UInt64, "ApprovalDelay",
1924
type_func=lambda td: td.total_seconds() * 1000)
1114
1925
approval_duration = notifychangeproperty(
1115
1926
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1927
type_func=lambda td: td.total_seconds() * 1000)
1117
1928
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1929
timeout = notifychangeproperty(
1930
dbus.UInt64, "Timeout",
1931
type_func=lambda td: td.total_seconds() * 1000)
1121
1932
extended_timeout = notifychangeproperty(
1122
1933
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1934
type_func=lambda td: td.total_seconds() * 1000)
1935
interval = notifychangeproperty(
1936
dbus.UInt64, "Interval",
1937
type_func=lambda td: td.total_seconds() * 1000)
1128
1938
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1939
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1940
invalidate_only=True)
1941
1130
1942
del notifychangeproperty
1131
1943
1132
1944
def __del__(self, *args, **kwargs):
1133
1945
try:
1134
1946
self.remove_from_connection()
1137
1949
if hasattr(DBusObjectWithProperties, "__del__"):
1138
1950
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
1951
Client.__del__(self, *args, **kwargs)
1140
1141
def checker_callback(self, pid, condition, command,
1142
*args, **kwargs):
1143
self.checker_callback_tag = None
1144
self.checker = None
1145
if os.WIFEXITED(condition):
1146
exitstatus = os.WEXITSTATUS(condition)
1952
1953
def checker_callback(self, source, condition,
1954
connection, command, *args, **kwargs):
1955
ret = Client.checker_callback(self, source, condition,
1956
connection, command, *args,
1957
**kwargs)
1958
exitstatus = self.last_checker_status
1959
if exitstatus >= 0:
1147
1960
# Emit D-Bus signal
1148
1961
self.CheckerCompleted(dbus.Int16(exitstatus),
1149
dbus.Int64(condition),
1962
# This is specific to GNU libC
1963
dbus.Int64(exitstatus << 8),
1150
1964
dbus.String(command))
1151
1965
else:
1152
1966
# Emit D-Bus signal
1153
1967
self.CheckerCompleted(dbus.Int16(-1),
1154
dbus.Int64(condition),
1968
dbus.Int64(
1969
# This is specific to GNU libC
1970
(exitstatus << 8)
1971
| self.last_checker_signal),
1155
1972
dbus.String(command))
1156
1157
return Client.checker_callback(self, pid, condition, command,
1158
*args, **kwargs)
1159
1973
return ret
1974
1160
1975
def start_checker(self, *args, **kwargs):
1161
old_checker = self.checker
1162
if self.checker is not None:
1163
old_checker_pid = self.checker.pid
1164
else:
1165
old_checker_pid = None
1976
old_checker_pid = getattr(self.checker, "pid", None)
1166
1977
r = Client.start_checker(self, *args, **kwargs)
1167
1978
# Only if new checker process was started
1168
1979
if (self.checker is not None
1170
1981
# Emit D-Bus signal
1171
1982
self.CheckerStarted(self.current_checker_command)
1172
1983
return r
1173
1984
1174
1985
def _reset_approved(self):
1175
1986
self.approved = None
1176
1987
return False
1177
1988
1178
1989
def approve(self, value=True):
1179
self.send_changedstate()
1180
1990
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
1185
1186
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
1188
1189
## Signals
1190
1991
GLib.timeout_add(int(self.approval_duration.total_seconds()
1992
* 1000), self._reset_approved)
1993
self.send_changedstate()
1994
1995
# D-Bus methods, signals & properties
1996
1997
# Interfaces
1998
1999
# Signals
2000
1191
2001
# CheckerCompleted - signal
1192
2002
@dbus.service.signal(_interface, signature="nxs")
1193
2003
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
2004
"D-Bus signal"
1195
2005
pass
1196
2006
1197
2007
# CheckerStarted - signal
1198
2008
@dbus.service.signal(_interface, signature="s")
1199
2009
def CheckerStarted(self, command):
1200
2010
"D-Bus signal"
1201
2011
pass
1202
2012
1203
2013
# PropertyChanged - signal
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1204
2015
@dbus.service.signal(_interface, signature="sv")
1205
2016
def PropertyChanged(self, property, value):
1206
2017
"D-Bus signal"
1207
2018
pass
1208
2019
1209
2020
# GotSecret - signal
1210
2021
@dbus.service.signal(_interface)
1211
2022
def GotSecret(self):
1214
2025
server to mandos-client
1215
2026
"""
1216
2027
pass
1217
2028
1218
2029
# Rejected - signal
1219
2030
@dbus.service.signal(_interface, signature="s")
1220
2031
def Rejected(self, reason):
1221
2032
"D-Bus signal"
1222
2033
pass
1223
2034
1224
2035
# NeedApproval - signal
1225
2036
@dbus.service.signal(_interface, signature="tb")
1226
2037
def NeedApproval(self, timeout, default):
1227
2038
"D-Bus signal"
1228
2039
return self.need_approval()
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
1236
pass
1237
1238
## Methods
1239
2040
2041
# Methods
2042
1240
2043
# Approve - method
1241
2044
@dbus.service.method(_interface, in_signature="b")
1242
2045
def Approve(self, value):
1243
2046
self.approve(value)
1244
2047
1245
2048
# CheckedOK - method
1246
2049
@dbus.service.method(_interface)
1247
2050
def CheckedOK(self):
1248
2051
self.checked_ok()
1249
2052
1250
2053
# Enable - method
2054
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1251
2055
@dbus.service.method(_interface)
1252
2056
def Enable(self):
1253
2057
"D-Bus method"
1254
2058
self.enable()
1255
2059
1256
2060
# StartChecker - method
2061
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1257
2062
@dbus.service.method(_interface)
1258
2063
def StartChecker(self):
1259
2064
"D-Bus method"
1260
2065
self.start_checker()
1261
2066
1262
2067
# Disable - method
2068
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1263
2069
@dbus.service.method(_interface)
1264
2070
def Disable(self):
1265
2071
"D-Bus method"
1266
2072
self.disable()
1267
2073
1268
2074
# StopChecker - method
2075
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1269
2076
@dbus.service.method(_interface)
1270
2077
def StopChecker(self):
1271
2078
self.stop_checker()
1272
1273
## Properties
1274
2079
2080
# Properties
2081
1275
2082
# ApprovalPending - property
1276
2083
@dbus_service_property(_interface, signature="b", access="read")
1277
2084
def ApprovalPending_dbus_property(self):
1278
2085
return dbus.Boolean(bool(self.approvals_pending))
1279
2086
1280
2087
# ApprovedByDefault - property
1281
@dbus_service_property(_interface, signature="b",
2088
@dbus_service_property(_interface,
2089
signature="b",
1282
2090
access="readwrite")
1283
2091
def ApprovedByDefault_dbus_property(self, value=None):
1284
2092
if value is None: # get
1285
2093
return dbus.Boolean(self.approved_by_default)
1286
2094
self.approved_by_default = bool(value)
1287
2095
1288
2096
# ApprovalDelay - property
1289
@dbus_service_property(_interface, signature="t",
2097
@dbus_service_property(_interface,
2098
signature="t",
1290
2099
access="readwrite")
1291
2100
def ApprovalDelay_dbus_property(self, value=None):
1292
2101
if value is None: # get
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2102
return dbus.UInt64(self.approval_delay.total_seconds()
2103
* 1000)
1294
2104
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1295
2105
1296
2106
# ApprovalDuration - property
1297
@dbus_service_property(_interface, signature="t",
2107
@dbus_service_property(_interface,
2108
signature="t",
1298
2109
access="readwrite")
1299
2110
def ApprovalDuration_dbus_property(self, value=None):
1300
2111
if value is None: # get
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2112
return dbus.UInt64(self.approval_duration.total_seconds()
2113
* 1000)
1303
2114
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1304
2115
1305
2116
# Name - property
2117
@dbus_annotations(
2118
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1306
2119
@dbus_service_property(_interface, signature="s", access="read")
1307
2120
def Name_dbus_property(self):
1308
2121
return dbus.String(self.name)
1309
2122
2123
# KeyID - property
2124
@dbus_annotations(
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2126
@dbus_service_property(_interface, signature="s", access="read")
2127
def KeyID_dbus_property(self):
2128
return dbus.String(self.key_id)
2129
1310
2130
# Fingerprint - property
2131
@dbus_annotations(
2132
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1311
2133
@dbus_service_property(_interface, signature="s", access="read")
1312
2134
def Fingerprint_dbus_property(self):
1313
2135
return dbus.String(self.fingerprint)
1314
2136
1315
2137
# Host - property
1316
@dbus_service_property(_interface, signature="s",
2138
@dbus_service_property(_interface,
2139
signature="s",
1317
2140
access="readwrite")
1318
2141
def Host_dbus_property(self, value=None):
1319
2142
if value is None: # get
1320
2143
return dbus.String(self.host)
1321
self.host = unicode(value)
1322
2144
self.host = str(value)
2145
1323
2146
# Created - property
2147
@dbus_annotations(
2148
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1324
2149
@dbus_service_property(_interface, signature="s", access="read")
1325
2150
def Created_dbus_property(self):
1326
2151
return datetime_to_dbus(self.created)
1327
2152
1328
2153
# LastEnabled - property
1329
2154
@dbus_service_property(_interface, signature="s", access="read")
1330
2155
def LastEnabled_dbus_property(self):
1331
2156
return datetime_to_dbus(self.last_enabled)
1332
2157
1333
2158
# Enabled - property
1334
@dbus_service_property(_interface, signature="b",
2159
@dbus_service_property(_interface,
2160
signature="b",
1335
2161
access="readwrite")
1336
2162
def Enabled_dbus_property(self, value=None):
1337
2163
if value is None: # get
1340
2166
self.enable()
1341
2167
else:
1342
2168
self.disable()
1343
2169
1344
2170
# LastCheckedOK - property
1345
@dbus_service_property(_interface, signature="s",
2171
@dbus_service_property(_interface,
2172
signature="s",
1346
2173
access="readwrite")
1347
2174
def LastCheckedOK_dbus_property(self, value=None):
1348
2175
if value is not None:
1349
2176
self.checked_ok()
1350
2177
return
1351
2178
return datetime_to_dbus(self.last_checked_ok)
1352
2179
2180
# LastCheckerStatus - property
2181
@dbus_service_property(_interface, signature="n", access="read")
2182
def LastCheckerStatus_dbus_property(self):
2183
return dbus.Int16(self.last_checker_status)
2184
1353
2185
# Expires - property
1354
2186
@dbus_service_property(_interface, signature="s", access="read")
1355
2187
def Expires_dbus_property(self):
1356
2188
return datetime_to_dbus(self.expires)
1357
2189
1358
2190
# LastApprovalRequest - property
1359
2191
@dbus_service_property(_interface, signature="s", access="read")
1360
2192
def LastApprovalRequest_dbus_property(self):
1361
2193
return datetime_to_dbus(self.last_approval_request)
1362
2194
1363
2195
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
2196
@dbus_service_property(_interface,
2197
signature="t",
1365
2198
access="readwrite")
1366
2199
def Timeout_dbus_property(self, value=None):
1367
2200
if value is None: # get
1368
return dbus.UInt64(self.timeout_milliseconds())
2201
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2202
old_timeout = self.timeout
1369
2203
self.timeout = datetime.timedelta(0, 0, 0, value)
1370
# Reschedule timeout
2204
# Reschedule disabling
1371
2205
if self.enabled:
1372
2206
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2207
self.expires += self.timeout - old_timeout
2208
if self.expires <= now:
1376
2209
# The timeout has passed
1377
2210
self.disable()
1378
2211
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
1382
2212
if (getattr(self, "disable_initiator_tag", None)
1383
2213
is None):
1384
2214
return
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
2215
GLib.source_remove(self.disable_initiator_tag)
2216
self.disable_initiator_tag = GLib.timeout_add(
2217
int((self.expires - now).total_seconds() * 1000),
2218
self.disable)
2219
1390
2220
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
2221
@dbus_service_property(_interface,
2222
signature="t",
1392
2223
access="readwrite")
1393
2224
def ExtendedTimeout_dbus_property(self, value=None):
1394
2225
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2226
return dbus.UInt64(self.extended_timeout.total_seconds()
2227
* 1000)
1396
2228
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1397
2229
1398
2230
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
2231
@dbus_service_property(_interface,
2232
signature="t",
1400
2233
access="readwrite")
1401
2234
def Interval_dbus_property(self, value=None):
1402
2235
if value is None: # get
1403
return dbus.UInt64(self.interval_milliseconds())
2236
return dbus.UInt64(self.interval.total_seconds() * 1000)
1404
2237
self.interval = datetime.timedelta(0, 0, 0, value)
1405
2238
if getattr(self, "checker_initiator_tag", None) is None:
1406
2239
return
1407
2240
if self.enabled:
1408
2241
# Reschedule checker run
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
2242
GLib.source_remove(self.checker_initiator_tag)
2243
self.checker_initiator_tag = GLib.timeout_add(
2244
value, self.start_checker)
2245
self.start_checker() # Start one now, too
2246
1414
2247
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
2248
@dbus_service_property(_interface,
2249
signature="s",
1416
2250
access="readwrite")
1417
2251
def Checker_dbus_property(self, value=None):
1418
2252
if value is None: # get
1419
2253
return dbus.String(self.checker_command)
1420
self.checker_command = unicode(value)
1421
2254
self.checker_command = str(value)
2255
1422
2256
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
2257
@dbus_service_property(_interface,
2258
signature="b",
1424
2259
access="readwrite")
1425
2260
def CheckerRunning_dbus_property(self, value=None):
1426
2261
if value is None: # get
1429
2264
self.start_checker()
1430
2265
else:
1431
2266
self.stop_checker()
1432
2267
1433
2268
# ObjectPath - property
2269
@dbus_annotations(
2270
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2271
"org.freedesktop.DBus.Deprecated": "true"})
1434
2272
@dbus_service_property(_interface, signature="o", access="read")
1435
2273
def ObjectPath_dbus_property(self):
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1437
2274
return self.dbus_object_path # is already a dbus.ObjectPath
2275
1438
2276
# Secret = property
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
2277
@dbus_annotations(
2278
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2279
"invalidates"})
2280
@dbus_service_property(_interface,
2281
signature="ay",
2282
access="write",
2283
byte_arrays=True)
1441
2284
def Secret_dbus_property(self, value):
1442
self.secret = str(value)
1443
2285
self.secret = bytes(value)
2286
1444
2287
del _interface
1445
2288
1446
2289
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2290
class ProxyClient:
2291
def __init__(self, child_pipe, key_id, fpr, address):
1449
2292
self._pipe = child_pipe
1450
self._pipe.send(('init', fpr, address))
2293
self._pipe.send(("init", key_id, fpr, address))
1451
2294
if not self._pipe.recv():
1452
raise KeyError()
1453
2295
raise KeyError(key_id or fpr)
2296
1454
2297
def __getattribute__(self, name):
1455
if name == '_pipe':
2298
if name == "_pipe":
1456
2299
return super(ProxyClient, self).__getattribute__(name)
1457
self._pipe.send(('getattr', name))
2300
self._pipe.send(("getattr", name))
1458
2301
data = self._pipe.recv()
1459
if data[0] == 'data':
2302
if data[0] == "data":
1460
2303
return data[1]
1461
if data[0] == 'function':
2304
if data[0] == "function":
2305
1462
2306
def func(*args, **kwargs):
1463
self._pipe.send(('funcall', name, args, kwargs))
2307
self._pipe.send(("funcall", name, args, kwargs))
1464
2308
return self._pipe.recv()[1]
2309
1465
2310
return func
1466
2311
1467
2312
def __setattr__(self, name, value):
1468
if name == '_pipe':
2313
if name == "_pipe":
1469
2314
return super(ProxyClient, self).__setattr__(name, value)
1470
self._pipe.send(('setattr', name, value))
1471
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
2315
self._pipe.send(("setattr", name, value))
1475
2316
1476
2317
1477
2318
class ClientHandler(socketserver.BaseRequestHandler, object):
1478
2319
"""A class to handle client connections.
1479
2320
1480
2321
Instantiated once for each connection to handle it.
1481
2322
Note: This will run in its own forked process."""
1482
2323
1483
2324
def handle(self):
1484
2325
with contextlib.closing(self.server.child_pipe) as child_pipe:
1485
logger.info("TCP connection from: %s",
1486
unicode(self.client_address))
1487
logger.debug("Pipe FD: %d",
1488
self.server.child_pipe.fileno())
1489
1490
session = (gnutls.connection
1491
.ClientSession(self.request,
1492
gnutls.connection
1493
.X509Credentials()))
1494
1495
# Note: gnutls.connection.X509Credentials is really a
1496
# generic GnuTLS certificate credentials object so long as
1497
# no X.509 keys are added to it. Therefore, we can use it
1498
# here despite using OpenPGP certificates.
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
2326
log.info("TCP connection from: %s",
2327
str(self.client_address))
2328
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2329
2330
session = gnutls.ClientSession(self.request)
2331
2332
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2333
# "+AES-256-CBC", "+SHA1",
2334
# "+COMP-NULL", "+CTYPE-OPENPGP",
2335
# "+DHE-DSS"))
1504
2336
# Use a fallback default, since this MUST be set.
1505
2337
priority = self.server.gnutls_priority
1506
2338
if priority is None:
1507
2339
priority = "NORMAL"
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
1510
priority, None))
1511
2340
gnutls.priority_set_direct(session,
2341
priority.encode("utf-8"), None)
2342
1512
2343
# Start communication using the Mandos protocol
1513
2344
# Get protocol number
1514
2345
line = self.request.makefile().readline()
1515
logger.debug("Protocol version: %r", line)
2346
log.debug("Protocol version: %r", line)
1516
2347
try:
1517
2348
if int(line.strip().split()[0]) > 1:
1518
raise RuntimeError
2349
raise RuntimeError(line)
1519
2350
except (ValueError, IndexError, RuntimeError) as error:
1520
logger.error("Unknown protocol version: %s", error)
2351
log.error("Unknown protocol version: %s", error)
1521
2352
return
1522
2353
1523
2354
# Start GnuTLS connection
1524
2355
try:
1525
2356
session.handshake()
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("Handshake failed: %s", error)
2357
except gnutls.Error as error:
2358
log.warning("Handshake failed: %s", error)
1528
2359
# Do not run session.bye() here: the session is not
1529
2360
# established. Just abandon the request.
1530
2361
return
1531
logger.debug("Handshake succeeded")
1532
2362
log.debug("Handshake succeeded")
2363
1533
2364
approval_required = False
1534
2365
try:
1535
try:
1536
fpr = self.fingerprint(self.peer_certificate
1537
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1541
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1544
try:
1545
client = ProxyClient(child_pipe, fpr,
2366
if gnutls.has_rawpk:
2367
fpr = b""
2368
try:
2369
key_id = self.key_id(
2370
self.peer_certificate(session))
2371
except (TypeError, gnutls.Error) as error:
2372
log.warning("Bad certificate: %s", error)
2373
return
2374
log.debug("Key ID: %s",
2375
key_id.decode("utf-8",
2376
errors="replace"))
2377
2378
else:
2379
key_id = b""
2380
try:
2381
fpr = self.fingerprint(
2382
self.peer_certificate(session))
2383
except (TypeError, gnutls.Error) as error:
2384
log.warning("Bad certificate: %s", error)
2385
return
2386
log.debug("Fingerprint: %s", fpr)
2387
2388
try:
2389
client = ProxyClient(child_pipe, key_id, fpr,
1546
2390
self.client_address)
1547
2391
except KeyError:
1548
2392
return
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
2393
1554
2394
if client.approval_delay:
1555
2395
delay = client.approval_delay
1556
2396
client.approvals_pending += 1
1557
2397
approval_required = True
1558
2398
1559
2399
while True:
1560
2400
if not client.enabled:
1561
logger.info("Client %s is disabled",
1562
client.name)
2401
log.info("Client %s is disabled", client.name)
1563
2402
if self.server.use_dbus:
1564
2403
# Emit D-Bus signal
1565
2404
client.Rejected("Disabled")
1566
2405
return
1567
2406
1568
2407
if client.approved or not client.approval_delay:
1569
#We are approved or approval is disabled
2408
# We are approved or approval is disabled
1570
2409
break
1571
2410
elif client.approved is None:
1572
logger.info("Client %s needs approval",
2411
log.info("Client %s needs approval",
2412
client.name)
2413
if self.server.use_dbus:
2414
# Emit D-Bus signal
2415
client.NeedApproval(
2416
client.approval_delay.total_seconds()
2417
* 1000, client.approved_by_default)
2418
else:
2419
log.warning("Client %s was not approved",
1573
2420
client.name)
1574
2421
if self.server.use_dbus:
1575
2422
# Emit D-Bus signal
1576
client.NeedApproval(
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
1579
else:
1580
logger.warning("Client %s was not approved",
1581
client.name)
1582
if self.server.use_dbus:
1583
# Emit D-Bus signal
1584
2423
client.Rejected("Denied")
1585
2424
return
1586
1587
#wait until timeout or approved
2425
2426
# wait until timeout or approved
1588
2427
time = datetime.datetime.now()
1589
2428
client.changedstate.acquire()
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
2429
client.changedstate.wait(delay.total_seconds())
1593
2430
client.changedstate.release()
1594
2431
time2 = datetime.datetime.now()
1595
2432
if (time2 - time) >= delay:
1596
2433
if not client.approved_by_default:
1597
logger.warning("Client %s timed out while"
1598
" waiting for approval",
1599
client.name)
2434
log.warning("Client %s timed out while"
2435
" waiting for approval",
2436
client.name)
1600
2437
if self.server.use_dbus:
1601
2438
# Emit D-Bus signal
1602
2439
client.Rejected("Approval timed out")
1605
2442
break
1606
2443
else:
1607
2444
delay -= time2 - time
1608
1609
sent_size = 0
1610
while sent_size < len(client.secret):
1611
try:
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1615
return
1616
logger.debug("Sent: %d, remaining: %d",
1617
sent, len(client.secret)
1618
- (sent_size + sent))
1619
sent_size += sent
1620
1621
logger.info("Sending secret to %s", client.name)
2445
2446
try:
2447
session.send(client.secret)
2448
except gnutls.Error as error:
2449
log.warning("gnutls send failed", exc_info=error)
2450
return
2451
2452
log.info("Sending secret to %s", client.name)
1622
2453
# bump the timeout using extended_timeout
1623
client.checked_ok(client.extended_timeout)
2454
client.bump_timeout(client.extended_timeout)
1624
2455
if self.server.use_dbus:
1625
2456
# Emit D-Bus signal
1626
2457
client.GotSecret()
1627
2458
1628
2459
finally:
1629
2460
if approval_required:
1630
2461
client.approvals_pending -= 1
1631
2462
try:
1632
2463
session.bye()
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1635
2464
except gnutls.Error as error:
2465
log.warning("GnuTLS bye failed", exc_info=error)
2466
1636
2467
@staticmethod
1637
2468
def peer_certificate(session):
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
2469
"Return the peer's certificate as a bytestring"
2470
try:
2471
cert_type = gnutls.certificate_type_get2(
2472
session, gnutls.CTYPE_PEERS)
2473
except AttributeError:
2474
cert_type = gnutls.certificate_type_get(session)
2475
if gnutls.has_rawpk:
2476
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2477
else:
2478
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2479
# If not a valid certificate type...
2480
if cert_type not in valid_cert_types:
2481
log.info("Cert type %r not in %r", cert_type,
2482
valid_cert_types)
2483
# ...return invalid data
2484
return b""
1645
2485
list_size = ctypes.c_uint(1)
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
1648
(session._c_object, ctypes.byref(list_size)))
2486
cert_list = (gnutls.certificate_get_peers
2487
(session, ctypes.byref(list_size)))
1649
2488
if not bool(cert_list) and list_size.value != 0:
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
2489
raise gnutls.Error("error getting peer certificate")
1652
2490
if list_size.value == 0:
1653
2491
return None
1654
2492
cert = cert_list[0]
1655
2493
return ctypes.string_at(cert.data, cert.size)
1656
2494
2495
@staticmethod
2496
def key_id(certificate):
2497
"Convert a certificate bytestring to a hexdigit key ID"
2498
# New GnuTLS "datum" with the public key
2499
datum = gnutls.datum_t(
2500
ctypes.cast(ctypes.c_char_p(certificate),
2501
ctypes.POINTER(ctypes.c_ubyte)),
2502
ctypes.c_uint(len(certificate)))
2503
# XXX all these need to be created in the gnutls "module"
2504
# New empty GnuTLS certificate
2505
pubkey = gnutls.pubkey_t()
2506
gnutls.pubkey_init(ctypes.byref(pubkey))
2507
# Import the raw public key into the certificate
2508
gnutls.pubkey_import(pubkey,
2509
ctypes.byref(datum),
2510
gnutls.X509_FMT_DER)
2511
# New buffer for the key ID
2512
buf = ctypes.create_string_buffer(32)
2513
buf_len = ctypes.c_size_t(len(buf))
2514
# Get the key ID from the raw public key into the buffer
2515
gnutls.pubkey_get_key_id(
2516
pubkey,
2517
gnutls.KEYID_USE_SHA256,
2518
ctypes.cast(ctypes.byref(buf),
2519
ctypes.POINTER(ctypes.c_ubyte)),
2520
ctypes.byref(buf_len))
2521
# Deinit the certificate
2522
gnutls.pubkey_deinit(pubkey)
2523
2524
# Convert the buffer to a Python bytestring
2525
key_id = ctypes.string_at(buf, buf_len.value)
2526
# Convert the bytestring to hexadecimal notation
2527
hex_key_id = binascii.hexlify(key_id).upper()
2528
return hex_key_id
2529
1657
2530
@staticmethod
1658
2531
def fingerprint(openpgp):
1659
2532
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1660
2533
# New GnuTLS "datum" with the OpenPGP public key
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1663
ctypes.POINTER
1664
(ctypes.c_ubyte)),
1665
ctypes.c_uint(len(openpgp))))
2534
datum = gnutls.datum_t(
2535
ctypes.cast(ctypes.c_char_p(openpgp),
2536
ctypes.POINTER(ctypes.c_ubyte)),
2537
ctypes.c_uint(len(openpgp)))
1666
2538
# New empty GnuTLS certificate
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2539
crt = gnutls.openpgp_crt_t()
2540
gnutls.openpgp_crt_init(ctypes.byref(crt))
1670
2541
# Import the OpenPGP public key into the certificate
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2542
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2543
gnutls.OPENPGP_FMT_RAW)
1675
2544
# Verify the self signature in the key
1676
2545
crtverify = ctypes.c_uint()
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2546
gnutls.openpgp_crt_verify_self(crt, 0,
2547
ctypes.byref(crtverify))
1680
2548
if crtverify.value != 0:
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
2549
gnutls.openpgp_crt_deinit(crt)
2550
raise gnutls.CertificateSecurityError(code
2551
=crtverify.value)
1684
2552
# New buffer for the fingerprint
1685
2553
buf = ctypes.create_string_buffer(20)
1686
2554
buf_len = ctypes.c_size_t()
1687
2555
# Get the fingerprint from the certificate into the buffer
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2556
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2557
ctypes.byref(buf_len))
1691
2558
# Deinit the certificate
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2559
gnutls.openpgp_crt_deinit(crt)
1693
2560
# Convert the buffer to a Python bytestring
1694
2561
fpr = ctypes.string_at(buf, buf_len.value)
1695
2562
# Convert the bytestring to hexadecimal notation
1697
2564
return hex_fpr
1698
2565
1699
2566
1700
class MultiprocessingMixIn(object):
2567
class MultiprocessingMixIn:
1701
2568
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2569
1702
2570
def sub_process_main(self, request, address):
1703
2571
try:
1704
2572
self.finish_request(request, address)
1705
2573
except Exception:
1706
2574
self.handle_error(request, address)
1707
2575
self.close_request(request)
1708
2576
1709
2577
def process_request(self, request, address):
1710
2578
"""Start a new process to process the request."""
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
2579
proc = multiprocessing.Process(target=self.sub_process_main,
2580
args=(request, address))
1714
2581
proc.start()
1715
2582
return proc
1716
2583
1717
2584
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2585
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1719
2586
""" adds a pipe to the MixIn """
2587
1720
2588
def process_request(self, request, client_address):
1721
2589
"""Overrides and wraps the original process_request().
1722
2590
1723
2591
This function creates a new pipe in self.pipe
1724
2592
"""
1725
2593
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1726
2594
1727
2595
proc = MultiprocessingMixIn.process_request(self, request,
1728
2596
client_address)
1729
2597
self.child_pipe.close()
1730
2598
self.add_pipe(parent_pipe, proc)
1731
2599
1732
2600
def add_pipe(self, parent_pipe, proc):
1733
2601
"""Dummy function; override as necessary"""
1734
raise NotImplementedError
2602
raise NotImplementedError()
1735
2603
1736
2604
1737
2605
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1738
socketserver.TCPServer, object):
1739
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1740
2606
socketserver.TCPServer):
2607
"""IPv6-capable TCP server. Accepts None as address and/or port
2608
1741
2609
Attributes:
1742
2610
enabled: Boolean; whether this server is activated yet
1743
2611
interface: None or a network interface name (string)
1744
2612
use_ipv6: Boolean; to use IPv6 or not
1745
2613
"""
2614
1746
2615
def __init__(self, server_address, RequestHandlerClass,
1747
interface=None, use_ipv6=True):
2616
interface=None,
2617
use_ipv6=True,
2618
socketfd=None):
2619
"""If socketfd is set, use that file descriptor instead of
2620
creating a new one with socket.socket().
2621
"""
1748
2622
self.interface = interface
1749
2623
if use_ipv6:
1750
2624
self.address_family = socket.AF_INET6
2625
if socketfd is not None:
2626
# Save the file descriptor
2627
self.socketfd = socketfd
2628
# Save the original socket.socket() function
2629
self.socket_socket = socket.socket
2630
2631
# To implement --socket, we monkey patch socket.socket.
2632
#
2633
# (When socketserver.TCPServer is a new-style class, we
2634
# could make self.socket into a property instead of monkey
2635
# patching socket.socket.)
2636
#
2637
# Create a one-time-only replacement for socket.socket()
2638
@functools.wraps(socket.socket)
2639
def socket_wrapper(*args, **kwargs):
2640
# Restore original function so subsequent calls are
2641
# not affected.
2642
socket.socket = self.socket_socket
2643
del self.socket_socket
2644
# This time only, return a new socket object from the
2645
# saved file descriptor.
2646
return socket.fromfd(self.socketfd, *args, **kwargs)
2647
# Replace socket.socket() function with wrapper
2648
socket.socket = socket_wrapper
2649
# The socketserver.TCPServer.__init__ will call
2650
# socket.socket(), which might be our replacement,
2651
# socket_wrapper(), if socketfd was set.
1751
2652
socketserver.TCPServer.__init__(self, server_address,
1752
2653
RequestHandlerClass)
2654
1753
2655
def server_bind(self):
1754
2656
"""This overrides the normal server_bind() function
1755
2657
to bind to an interface if one was specified, and also NOT to
1756
2658
bind to an address or port if they were not specified."""
2659
global SO_BINDTODEVICE
1757
2660
if self.interface is not None:
1758
2661
if SO_BINDTODEVICE is None:
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1761
self.interface)
1762
else:
1763
try:
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1765
SO_BINDTODEVICE,
1766
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1772
self.interface)
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1776
self.interface)
1777
else:
1778
raise
2662
# Fall back to a hard-coded value which seems to be
2663
# common enough.
2664
log.warning("SO_BINDTODEVICE not found, trying 25")
2665
SO_BINDTODEVICE = 25
2666
try:
2667
self.socket.setsockopt(
2668
socket.SOL_SOCKET, SO_BINDTODEVICE,
2669
(self.interface + "\0").encode("utf-8"))
2670
except socket.error as error:
2671
if error.errno == errno.EPERM:
2672
log.error("No permission to bind to interface %s",
2673
self.interface)
2674
elif error.errno == errno.ENOPROTOOPT:
2675
log.error("SO_BINDTODEVICE not available; cannot"
2676
" bind to interface %s", self.interface)
2677
elif error.errno == errno.ENODEV:
2678
log.error("Interface %s does not exist, cannot"
2679
" bind", self.interface)
2680
else:
2681
raise
1779
2682
# Only bind(2) the socket if we really need to.
1780
2683
if self.server_address[0] or self.server_address[1]:
2684
if self.server_address[1]:
2685
self.allow_reuse_address = True
1781
2686
if not self.server_address[0]:
1782
2687
if self.address_family == socket.AF_INET6:
1783
any_address = "::" # in6addr_any
2688
any_address = "::" # in6addr_any
1784
2689
else:
1785
any_address = socket.INADDR_ANY
2690
any_address = "0.0.0.0" # INADDR_ANY
1786
2691
self.server_address = (any_address,
1787
2692
self.server_address[1])
1788
2693
elif not self.server_address[1]:
1789
self.server_address = (self.server_address[0],
1790
0)
2694
self.server_address = (self.server_address[0], 0)
1791
2695
# if self.interface:
1792
2696
# self.server_address = (self.server_address[0],
1793
2697
# 0, # port
1799
2703
1800
2704
class MandosServer(IPv6_TCPServer):
1801
2705
"""Mandos server.
1802
2706
1803
2707
Attributes:
1804
2708
clients: set of Client objects
1805
2709
gnutls_priority GnuTLS priority string
1806
2710
use_dbus: Boolean; to emit D-Bus signals or not
1807
1808
Assumes a gobject.MainLoop event loop.
2711
2712
Assumes a GLib.MainLoop event loop.
1809
2713
"""
2714
1810
2715
def __init__(self, server_address, RequestHandlerClass,
1811
interface=None, use_ipv6=True, clients=None,
1812
gnutls_priority=None, use_dbus=True):
2716
interface=None,
2717
use_ipv6=True,
2718
clients=None,
2719
gnutls_priority=None,
2720
use_dbus=True,
2721
socketfd=None):
1813
2722
self.enabled = False
1814
2723
self.clients = clients
1815
2724
if self.clients is None:
1818
2727
self.gnutls_priority = gnutls_priority
1819
2728
IPv6_TCPServer.__init__(self, server_address,
1820
2729
RequestHandlerClass,
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2730
interface=interface,
2731
use_ipv6=use_ipv6,
2732
socketfd=socketfd)
2733
1823
2734
def server_activate(self):
1824
2735
if self.enabled:
1825
2736
return socketserver.TCPServer.server_activate(self)
1826
2737
1827
2738
def enable(self):
1828
2739
self.enabled = True
1829
2740
1830
2741
def add_pipe(self, parent_pipe, proc):
1831
2742
# Call "handle_ipc" for both data and EOF events
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1841
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1844
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1849
# sockets).
1850
}
1851
conditions_string = ' | '.join(name
1852
for cond, name in
1853
condition_names.iteritems()
1854
if cond & condition)
2743
GLib.io_add_watch(
2744
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2745
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2746
functools.partial(self.handle_ipc,
2747
parent_pipe=parent_pipe,
2748
proc=proc))
2749
2750
def handle_ipc(self, source, condition,
2751
parent_pipe=None,
2752
proc=None,
2753
client_object=None):
1855
2754
# error, or the other end of multiprocessing.Pipe has closed
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2755
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1857
2756
# Wait for other process to exit
1858
2757
proc.join()
1859
2758
return False
1860
2759
1861
2760
# Read a request from the child
1862
2761
request = parent_pipe.recv()
1863
2762
command = request[0]
1864
1865
if command == 'init':
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2763
2764
if command == "init":
2765
key_id = request[1].decode("ascii")
2766
fpr = request[2].decode("ascii")
2767
address = request[3]
2768
2769
for c in self.clients.values():
2770
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2771
"27AE41E4649B934CA495991B7852B855"):
2772
continue
2773
if key_id and c.key_id == key_id:
2774
client = c
2775
break
2776
if fpr and c.fingerprint == fpr:
1871
2777
client = c
1872
2778
break
1873
2779
else:
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2780
log.info("Client not found for key ID: %s, address:"
2781
" %s", key_id or fpr, address)
1876
2782
if self.use_dbus:
1877
2783
# Emit D-Bus signal
1878
mandos_dbus_service.ClientNotFound(fpr,
2784
mandos_dbus_service.ClientNotFound(key_id or fpr,
1879
2785
address[0])
1880
2786
parent_pipe.send(False)
1881
2787
return False
1882
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
2788
2789
GLib.io_add_watch(
2790
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2791
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2792
functools.partial(self.handle_ipc,
2793
parent_pipe=parent_pipe,
2794
proc=proc,
2795
client_object=client))
1891
2796
parent_pipe.send(True)
1892
2797
# remove the old hook in favor of the new above hook on
1893
2798
# same fileno
1894
2799
return False
1895
if command == 'funcall':
2800
if command == "funcall":
1896
2801
funcname = request[1]
1897
2802
args = request[2]
1898
2803
kwargs = request[3]
1899
1900
parent_pipe.send(('data', getattr(client_object,
2804
2805
parent_pipe.send(("data", getattr(client_object,
1901
2806
funcname)(*args,
1902
**kwargs)))
1903
1904
if command == 'getattr':
2807
**kwargs)))
2808
2809
if command == "getattr":
1905
2810
attrname = request[1]
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2811
if isinstance(client_object.__getattribute__(attrname),
2812
collections.abc.Callable):
2813
parent_pipe.send(("function", ))
1908
2814
else:
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
1912
if command == 'setattr':
2815
parent_pipe.send((
2816
"data", client_object.__getattribute__(attrname)))
2817
2818
if command == "setattr":
1913
2819
attrname = request[1]
1914
2820
value = request[2]
1915
2821
setattr(client_object, attrname, value)
1916
2822
1917
2823
return True
1918
2824
1919
2825
2826
def rfc3339_duration_to_delta(duration):
2827
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2828
2829
>>> timedelta = datetime.timedelta
2830
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2831
True
2832
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2833
True
2834
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2835
True
2836
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2837
True
2838
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2839
True
2840
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2841
True
2842
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2843
True
2844
>>> del timedelta
2845
"""
2846
2847
# Parsing an RFC 3339 duration with regular expressions is not
2848
# possible - there would have to be multiple places for the same
2849
# values, like seconds. The current code, while more esoteric, is
2850
# cleaner without depending on a parsing library. If Python had a
2851
# built-in library for parsing we would use it, but we'd like to
2852
# avoid excessive use of external libraries.
2853
2854
# New type for defining tokens, syntax, and semantics all-in-one
2855
Token = collections.namedtuple("Token", (
2856
"regexp", # To match token; if "value" is not None, must have
2857
# a "group" containing digits
2858
"value", # datetime.timedelta or None
2859
"followers")) # Tokens valid after this token
2860
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2861
# the "duration" ABNF definition in RFC 3339, Appendix A.
2862
token_end = Token(re.compile(r"$"), None, frozenset())
2863
token_second = Token(re.compile(r"(\d+)S"),
2864
datetime.timedelta(seconds=1),
2865
frozenset((token_end, )))
2866
token_minute = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(minutes=1),
2868
frozenset((token_second, token_end)))
2869
token_hour = Token(re.compile(r"(\d+)H"),
2870
datetime.timedelta(hours=1),
2871
frozenset((token_minute, token_end)))
2872
token_time = Token(re.compile(r"T"),
2873
None,
2874
frozenset((token_hour, token_minute,
2875
token_second)))
2876
token_day = Token(re.compile(r"(\d+)D"),
2877
datetime.timedelta(days=1),
2878
frozenset((token_time, token_end)))
2879
token_month = Token(re.compile(r"(\d+)M"),
2880
datetime.timedelta(weeks=4),
2881
frozenset((token_day, token_end)))
2882
token_year = Token(re.compile(r"(\d+)Y"),
2883
datetime.timedelta(weeks=52),
2884
frozenset((token_month, token_end)))
2885
token_week = Token(re.compile(r"(\d+)W"),
2886
datetime.timedelta(weeks=1),
2887
frozenset((token_end, )))
2888
token_duration = Token(re.compile(r"P"), None,
2889
frozenset((token_year, token_month,
2890
token_day, token_time,
2891
token_week)))
2892
# Define starting values:
2893
# Value so far
2894
value = datetime.timedelta()
2895
found_token = None
2896
# Following valid tokens
2897
followers = frozenset((token_duration, ))
2898
# String left to parse
2899
s = duration
2900
# Loop until end token is found
2901
while found_token is not token_end:
2902
# Search for any currently valid tokens
2903
for token in followers:
2904
match = token.regexp.match(s)
2905
if match is not None:
2906
# Token found
2907
if token.value is not None:
2908
# Value found, parse digits
2909
factor = int(match.group(1), 10)
2910
# Add to value so far
2911
value += factor * token.value
2912
# Strip token from string
2913
s = token.regexp.sub("", s, 1)
2914
# Go to found token
2915
found_token = token
2916
# Set valid next tokens
2917
followers = found_token.followers
2918
break
2919
else:
2920
# No currently valid tokens were found
2921
raise ValueError("Invalid RFC 3339 duration: {!r}"
2922
.format(duration))
2923
# End token found
2924
return value
2925
2926
1920
2927
def string_to_delta(interval):
1921
2928
"""Parse a string and return a datetime.timedelta
1922
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
2929
2930
>>> string_to_delta("7d") == datetime.timedelta(7)
2931
True
2932
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2933
True
2934
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2935
True
2936
>>> string_to_delta("24h") == datetime.timedelta(1)
2937
True
2938
>>> string_to_delta("1w") == datetime.timedelta(7)
2939
True
2940
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2941
True
1935
2942
"""
2943
2944
try:
2945
return rfc3339_duration_to_delta(interval)
2946
except ValueError:
2947
pass
2948
1936
2949
timevalue = datetime.timedelta(0)
1937
2950
for s in interval.split():
1938
2951
try:
1939
suffix = unicode(s[-1])
2952
suffix = s[-1]
1940
2953
value = int(s[:-1])
1941
2954
if suffix == "d":
1942
2955
delta = datetime.timedelta(value)
1949
2962
elif suffix == "w":
1950
2963
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1951
2964
else:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
2965
raise ValueError("Unknown suffix {!r}".format(suffix))
2966
except IndexError as e:
1954
2967
raise ValueError(*(e.args))
1955
2968
timevalue += delta
1956
2969
return timevalue
1957
2970
1958
2971
1959
def daemon(nochdir = False, noclose = False):
2972
def daemon(nochdir=False, noclose=False):
1960
2973
"""See daemon(3). Standard BSD Unix function.
1961
2974
1962
2975
This should really exist as os.daemon, but it doesn't (yet)."""
1963
2976
if os.fork():
1964
2977
sys.exit()
1969
2982
sys.exit()
1970
2983
if not noclose:
1971
2984
# Close all standard open file descriptors
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1973
2986
if not stat.S_ISCHR(os.fstat(null).st_mode):
1974
2987
raise OSError(errno.ENODEV,
1975
"%s not a character device"
1976
% os.path.devnull)
2988
"{} not a character device"
2989
.format(os.devnull))
1977
2990
os.dup2(null, sys.stdin.fileno())
1978
2991
os.dup2(null, sys.stdout.fileno())
1979
2992
os.dup2(null, sys.stderr.fileno())
1982
2995
1983
2996
1984
2997
def main():
1985
2998
1986
2999
##################################################################
1987
3000
# Parsing of options, both command line and config file
1988
3001
1989
3002
parser = argparse.ArgumentParser()
1990
3003
parser.add_argument("-v", "--version", action="version",
1991
version = "%%(prog)s %s" % version,
3004
version="%(prog)s {}".format(version),
1992
3005
help="show version number and exit")
1993
3006
parser.add_argument("-i", "--interface", metavar="IF",
1994
3007
help="Bind to interface IF")
2000
3013
help="Run self-test")
2001
3014
parser.add_argument("--debug", action="store_true",
2002
3015
help="Debug mode; run in foreground and log"
2003
" to terminal")
3016
" to terminal", default=None)
2004
3017
parser.add_argument("--debuglevel", metavar="LEVEL",
2005
3018
help="Debug level for stdout output")
2006
3019
parser.add_argument("--priority", help="GnuTLS"
2013
3026
" files")
2014
3027
parser.add_argument("--no-dbus", action="store_false",
2015
3028
dest="use_dbus", help="Do not provide D-Bus"
2016
" system bus interface")
3029
" system bus interface", default=None)
2017
3030
parser.add_argument("--no-ipv6", action="store_false",
2018
dest="use_ipv6", help="Do not use IPv6")
3031
dest="use_ipv6", help="Do not use IPv6",
3032
default=None)
2019
3033
parser.add_argument("--no-restore", action="store_false",
2020
3034
dest="restore", help="Do not restore stored"
2021
" state")
3035
" state", default=None)
3036
parser.add_argument("--socket", type=int,
3037
help="Specify a file descriptor to a network"
3038
" socket to use instead of creating one")
2022
3039
parser.add_argument("--statedir", metavar="DIR",
2023
3040
help="Directory to save/restore state in")
2024
3041
parser.add_argument("--foreground", action="store_true",
3042
help="Run in foreground", default=None)
3043
parser.add_argument("--no-zeroconf", action="store_false",
3044
dest="zeroconf", help="Do not use Zeroconf",
3045
default=None)
3046
2025
3047
options = parser.parse_args()
2026
2027
if options.check:
2028
import doctest
2029
doctest.testmod()
2030
sys.exit()
2031
3048
2032
3049
# Default values for config file for server-global settings
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"statedir": "/var/lib/mandos"
2045
}
2046
3050
if gnutls.has_rawpk:
3051
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3052
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3053
else:
3054
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3055
":+SIGN-DSA-SHA256")
3056
server_defaults = {"interface": "",
3057
"address": "",
3058
"port": "",
3059
"debug": "False",
3060
"priority": priority,
3061
"servicename": "Mandos",
3062
"use_dbus": "True",
3063
"use_ipv6": "True",
3064
"debuglevel": "",
3065
"restore": "True",
3066
"socket": "",
3067
"statedir": "/var/lib/mandos",
3068
"foreground": "False",
3069
"zeroconf": "True",
3070
}
3071
del priority
3072
2047
3073
# Parse config file for server-global settings
2048
server_config = configparser.SafeConfigParser(server_defaults)
3074
server_config = configparser.ConfigParser(server_defaults)
2049
3075
del server_defaults
2050
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
2052
# Convert the SafeConfigParser object to a dict
3076
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3077
# Convert the ConfigParser object to a dict
2053
3078
server_settings = server_config.defaults()
2054
3079
# Use the appropriate methods on the non-string config options
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3080
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3081
"foreground", "zeroconf"):
2056
3082
server_settings[option] = server_config.getboolean("DEFAULT",
2057
3083
option)
2058
3084
if server_settings["port"]:
2059
3085
server_settings["port"] = server_config.getint("DEFAULT",
2060
3086
"port")
3087
if server_settings["socket"]:
3088
server_settings["socket"] = server_config.getint("DEFAULT",
3089
"socket")
3090
# Later, stdin will, and stdout and stderr might, be dup'ed
3091
# over with an opened os.devnull. But we don't want this to
3092
# happen with a supplied network socket.
3093
if 0 <= server_settings["socket"] <= 2:
3094
server_settings["socket"] = os.dup(server_settings
3095
["socket"])
2061
3096
del server_config
2062
3097
2063
3098
# Override the settings from the config file with command line
2064
3099
# options, if set.
2065
3100
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
3101
"priority", "servicename", "configdir", "use_dbus",
3102
"use_ipv6", "debuglevel", "restore", "statedir",
3103
"socket", "foreground", "zeroconf"):
2069
3104
value = getattr(options, option)
2070
3105
if value is not None:
2071
3106
server_settings[option] = value
2072
3107
del options
2073
3108
# Force all strings to be unicode
2074
3109
for option in server_settings.keys():
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3110
if isinstance(server_settings[option], bytes):
3111
server_settings[option] = (server_settings[option]
3112
.decode("utf-8"))
3113
# Force all boolean options to be boolean
3114
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3115
"foreground", "zeroconf"):
3116
server_settings[option] = bool(server_settings[option])
3117
# Debug implies foreground
3118
if server_settings["debug"]:
3119
server_settings["foreground"] = True
2077
3120
# Now we have our good server settings in "server_settings"
2078
3121
2079
3122
##################################################################
2080
3123
3124
if (not server_settings["zeroconf"]
3125
and not (server_settings["port"]
3126
or server_settings["socket"] != "")):
3127
parser.error("Needs port or socket to work without Zeroconf")
3128
2081
3129
# For convenience
2082
3130
debug = server_settings["debug"]
2083
3131
debuglevel = server_settings["debuglevel"]
2085
3133
use_ipv6 = server_settings["use_ipv6"]
2086
3134
stored_state_path = os.path.join(server_settings["statedir"],
2087
3135
stored_state_file)
2088
3136
foreground = server_settings["foreground"]
3137
zeroconf = server_settings["zeroconf"]
3138
2089
3139
if debug:
2090
3140
initlogger(debug, logging.DEBUG)
2091
3141
else:
2094
3144
else:
2095
3145
level = getattr(logging, debuglevel.upper())
2096
3146
initlogger(debug, level)
2097
3147
2098
3148
if server_settings["servicename"] != "Mandos":
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
2103
3149
syslogger.setFormatter(
3150
logging.Formatter("Mandos ({}) [%(process)d]:"
3151
" %(levelname)s: %(message)s".format(
3152
server_settings["servicename"])))
3153
2104
3154
# Parse config file with clients
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
3155
client_config = configparser.ConfigParser(Client.client_defaults)
2107
3156
client_config.read(os.path.join(server_settings["configdir"],
2108
3157
"clients.conf"))
2109
3158
2110
3159
global mandos_dbus_service
2111
3160
mandos_dbus_service = None
2112
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2115
ClientHandler,
2116
interface=(server_settings["interface"]
2117
or None),
2118
use_ipv6=use_ipv6,
2119
gnutls_priority=
2120
server_settings["priority"],
2121
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
2128
2129
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2132
except KeyError:
2133
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
3161
3162
socketfd = None
3163
if server_settings["socket"] != "":
3164
socketfd = server_settings["socket"]
3165
tcp_server = MandosServer(
3166
(server_settings["address"], server_settings["port"]),
3167
ClientHandler,
3168
interface=(server_settings["interface"] or None),
3169
use_ipv6=use_ipv6,
3170
gnutls_priority=server_settings["priority"],
3171
use_dbus=use_dbus,
3172
socketfd=socketfd)
3173
if not foreground:
3174
pidfilename = "/run/mandos.pid"
3175
if not os.path.isdir("/run/."):
3176
pidfilename = "/var/run/mandos.pid"
3177
pidfile = None
3178
try:
3179
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3180
except IOError as e:
3181
log.error("Could not open file %r", pidfilename,
3182
exc_info=e)
3183
3184
for name, group in (("_mandos", "_mandos"),
3185
("mandos", "mandos"),
3186
("nobody", "nogroup")):
3187
try:
3188
uid = pwd.getpwnam(name).pw_uid
3189
gid = pwd.getpwnam(group).pw_gid
3190
break
2136
3191
except KeyError:
2137
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
2140
except KeyError:
2141
uid = 65534
2142
gid = 65534
3192
continue
3193
else:
3194
uid = 65534
3195
gid = 65534
2143
3196
try:
2144
3197
os.setgid(gid)
2145
3198
os.setuid(uid)
3199
log.debug("Did setuid/setgid to %s:%s", uid, gid)
2146
3200
except OSError as error:
2147
if error[0] != errno.EPERM:
2148
raise error
2149
3201
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3202
os.strerror(error.errno))
3203
if error.errno != errno.EPERM:
3204
raise
3205
2150
3206
if debug:
2151
3207
# Enable all possible GnuTLS debugging
2152
3208
2153
3209
# "Use a log level over 10 to enable all debugging options."
2154
3210
# - GnuTLS manual
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
2157
@gnutls.library.types.gnutls_log_func
3211
gnutls.global_set_log_level(11)
3212
3213
@gnutls.log_func
2158
3214
def debug_gnutls(level, string):
2159
logger.debug("GnuTLS: %s", string[:-1])
2160
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
3215
log.debug("GnuTLS: %s",
3216
string[:-1].decode("utf-8", errors="replace"))
3217
3218
gnutls.global_set_log_function(debug_gnutls)
3219
2164
3220
# Redirect stdin so all checkers get /dev/null
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3221
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2166
3222
os.dup2(null, sys.stdin.fileno())
2167
3223
if null > 2:
2168
3224
os.close(null)
2169
3225
2170
3226
# Need to fork before connecting to D-Bus
2171
if not debug:
3227
if not foreground:
2172
3228
# Close all input and output, do double fork, etc.
2173
3229
daemon()
2174
2175
gobject.threads_init()
2176
3230
3231
if gi.version_info < (3, 10, 2):
3232
# multiprocessing will use threads, so before we use GLib we
3233
# need to inform GLib that threads will be used.
3234
GLib.threads_init()
3235
2177
3236
global main_loop
2178
3237
# From the Avahi example code
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3238
DBusGMainLoop(set_as_default=True)
3239
main_loop = GLib.MainLoop()
2181
3240
bus = dbus.SystemBus()
2182
3241
# End of Avahi example code
2183
3242
if use_dbus:
2184
3243
try:
2185
3244
bus_name = dbus.service.BusName("se.recompile.Mandos",
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
3245
bus,
3246
do_not_queue=True)
3247
old_bus_name = dbus.service.BusName(
3248
"se.bsnet.fukt.Mandos", bus,
3249
do_not_queue=True)
3250
except dbus.exceptions.DBusException as e:
3251
log.error("Disabling D-Bus:", exc_info=e)
2192
3252
use_dbus = False
2193
3253
server_settings["use_dbus"] = False
2194
3254
tcp_server.use_dbus = False
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2203
3255
if zeroconf:
3256
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3257
service = AvahiServiceToSyslog(
3258
name=server_settings["servicename"],
3259
servicetype="_mandos._tcp",
3260
protocol=protocol,
3261
bus=bus)
3262
if server_settings["interface"]:
3263
service.interface = if_nametoindex(
3264
server_settings["interface"].encode("utf-8"))
3265
2204
3266
global multiprocessing_manager
2205
3267
multiprocessing_manager = multiprocessing.Manager()
2206
3268
2207
3269
client_class = Client
2208
3270
if use_dbus:
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
3271
client_class = functools.partial(ClientDBus, bus=bus)
3272
2212
3273
client_settings = Client.config_parser(client_config)
2213
3274
old_client_settings = {}
2214
3275
clients_data = {}
2215
3276
3277
# This is used to redirect stdout and stderr for checker processes
3278
global wnull
3279
wnull = open(os.devnull, "w") # A writable /dev/null
3280
# Only used if server is running in foreground but not in debug
3281
# mode
3282
if debug or not foreground:
3283
wnull.close()
3284
2216
3285
# Get client data and settings from last running state.
2217
3286
if server_settings["restore"]:
2218
3287
try:
2219
3288
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
3289
if sys.version_info.major == 2:
3290
clients_data, old_client_settings = pickle.load(
3291
stored_state)
3292
else:
3293
bytes_clients_data, bytes_old_client_settings = (
3294
pickle.load(stored_state, encoding="bytes"))
3295
# Fix bytes to strings
3296
# clients_data
3297
# .keys()
3298
clients_data = {(key.decode("utf-8")
3299
if isinstance(key, bytes)
3300
else key): value
3301
for key, value in
3302
bytes_clients_data.items()}
3303
del bytes_clients_data
3304
for key in clients_data:
3305
value = {(k.decode("utf-8")
3306
if isinstance(k, bytes) else k): v
3307
for k, v in
3308
clients_data[key].items()}
3309
clients_data[key] = value
3310
# .client_structure
3311
value["client_structure"] = [
3312
(s.decode("utf-8")
3313
if isinstance(s, bytes)
3314
else s) for s in
3315
value["client_structure"]]
3316
# .name, .host, and .checker_command
3317
for k in ("name", "host", "checker_command"):
3318
if isinstance(value[k], bytes):
3319
value[k] = value[k].decode("utf-8")
3320
if "key_id" not in value:
3321
value["key_id"] = ""
3322
elif "fingerprint" not in value:
3323
value["fingerprint"] = ""
3324
# old_client_settings
3325
# .keys()
3326
old_client_settings = {
3327
(key.decode("utf-8")
3328
if isinstance(key, bytes)
3329
else key): value
3330
for key, value in
3331
bytes_old_client_settings.items()}
3332
del bytes_old_client_settings
3333
# .host and .checker_command
3334
for value in old_client_settings.values():
3335
for attribute in ("host", "checker_command"):
3336
if isinstance(value[attribute], bytes):
3337
value[attribute] = (value[attribute]
3338
.decode("utf-8"))
2222
3339
os.remove(stored_state_path)
2223
3340
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
3341
if e.errno == errno.ENOENT:
3342
log.warning("Could not load persistent state:"
3343
" %s", os.strerror(e.errno))
3344
else:
3345
log.critical("Could not load persistent state:",
3346
exc_info=e)
2227
3347
raise
2228
3348
except EOFError as e:
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
3349
log.warning("Could not load persistent state: EOFError:",
3350
exc_info=e)
3351
2232
3352
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
3353
for client_name, client in clients_data.items():
3354
# Skip removed clients
3355
if client_name not in client_settings:
3356
continue
3357
2234
3358
# Decide which value to use after restoring saved state.
2235
3359
# We have three different values: Old config file,
2236
3360
# new config file, and saved state.
2241
3365
# For each value in new config, check if it
2242
3366
# differs from the old config value (Except for
2243
3367
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
3368
if (name != "secret"
3369
and (value !=
3370
old_client_settings[client_name][name])):
2247
3371
client[name] = value
2248
3372
except KeyError:
2249
3373
pass
2250
3374
2251
3375
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
3376
# enabled if its last checker was successful. A Client
3377
# whose checker succeeded before we stored its state is
3378
# assumed to have successfully run all checkers during
3379
# downtime.
2255
3380
if client["enabled"]:
2256
3381
if datetime.datetime.utcnow() >= client["expires"]:
2257
3382
if not client["last_checked_ok"]:
2258
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
3383
log.warning("disabling client %s - Client"
3384
" never performed a successful"
3385
" checker", client_name)
2262
3386
client["enabled"] = False
2263
3387
elif client["last_checker_status"] != 0:
2264
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
3388
log.warning("disabling client %s - Client"
3389
" last checker failed with error"
3390
" code %s", client_name,
3391
client["last_checker_status"])
2269
3392
client["enabled"] = False
2270
3393
else:
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
2274
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
3394
client["expires"] = (
3395
datetime.datetime.utcnow()
3396
+ client["timeout"])
3397
log.debug("Last checker succeeded, keeping %s"
3398
" enabled", client_name)
2277
3399
try:
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
3400
client["secret"] = pgp.decrypt(
3401
client["encrypted_secret"],
3402
client_settings[client_name]["secret"])
2282
3403
except PGPError:
2283
3404
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
3405
log.debug("Failed to decrypt %s old secret",
3406
client_name)
3407
client["secret"] = (client_settings[client_name]
3408
["secret"])
2288
3409
2289
2290
3410
# Add/remove clients based on new changes made to config
2291
3411
for client_name in (set(old_client_settings)
2292
3412
- set(client_settings)):
2295
3415
- set(old_client_settings)):
2296
3416
clients_data[client_name] = client_settings[client_name]
2297
3417
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3418
# Create all client objects
3419
for client_name, client in clients_data.items():
2300
3420
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2302
3421
name=client_name,
3422
settings=client,
3423
server_settings=server_settings)
3424
2303
3425
if not tcp_server.clients:
2304
logger.warning("No clients defined")
2305
2306
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
3426
log.warning("No clients defined")
3427
3428
if not foreground:
3429
if pidfile is not None:
3430
pid = os.getpid()
3431
try:
3432
with pidfile:
3433
print(pid, file=pidfile)
3434
except IOError:
3435
log.error("Could not write to file %r with PID %d",
3436
pidfilename, pid)
3437
del pidfile
2318
3438
del pidfilename
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2323
3439
3440
for termsig in (signal.SIGHUP, signal.SIGTERM):
3441
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3442
lambda: main_loop.quit() and False)
3443
2324
3444
if use_dbus:
2325
class MandosDBusService(dbus.service.Object):
3445
3446
@alternate_dbus_interfaces(
3447
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3448
class MandosDBusService(DBusObjectWithObjectManager):
2326
3449
"""A D-Bus proxy object"""
3450
2327
3451
def __init__(self):
2328
3452
dbus.service.Object.__init__(self, bus, "/")
3453
2329
3454
_interface = "se.recompile.Mandos"
2330
3455
2331
3456
@dbus.service.signal(_interface, signature="o")
2332
3457
def ClientAdded(self, objpath):
2333
3458
"D-Bus signal"
2334
3459
pass
2335
3460
2336
3461
@dbus.service.signal(_interface, signature="ss")
2337
def ClientNotFound(self, fingerprint, address):
3462
def ClientNotFound(self, key_id, address):
2338
3463
"D-Bus signal"
2339
3464
pass
2340
3465
3466
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3467
"true"})
2341
3468
@dbus.service.signal(_interface, signature="os")
2342
3469
def ClientRemoved(self, objpath, name):
2343
3470
"D-Bus signal"
2344
3471
pass
2345
3472
3473
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3474
"true"})
2346
3475
@dbus.service.method(_interface, out_signature="ao")
2347
3476
def GetAllClients(self):
2348
3477
"D-Bus method"
2349
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
2352
3478
return dbus.Array(c.dbus_object_path for c in
3479
tcp_server.clients.values())
3480
3481
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3482
"true"})
2353
3483
@dbus.service.method(_interface,
2354
3484
out_signature="a{oa{sv}}")
2355
3485
def GetAllClientsWithProperties(self):
2356
3486
"D-Bus method"
2357
3487
return dbus.Dictionary(
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3488
{c.dbus_object_path: c.GetAll(
3489
"se.recompile.Mandos.Client")
3490
for c in tcp_server.clients.values()},
2360
3491
signature="oa{sv}")
2361
3492
2362
3493
@dbus.service.method(_interface, in_signature="o")
2363
3494
def RemoveClient(self, object_path):
2364
3495
"D-Bus method"
2365
for c in tcp_server.clients.itervalues():
3496
for c in tcp_server.clients.values():
2366
3497
if c.dbus_object_path == object_path:
2367
3498
del tcp_server.clients[c.name]
2368
3499
c.remove_from_connection()
2369
# Don't signal anything except ClientRemoved
3500
# Don't signal the disabling
2370
3501
c.disable(quiet=True)
2371
# Emit D-Bus signal
2372
self.ClientRemoved(object_path, c.name)
3502
# Emit D-Bus signal for removal
3503
self.client_removed_signal(c)
2373
3504
return
2374
3505
raise KeyError(object_path)
2375
3506
2376
3507
del _interface
2377
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
2381
3508
3509
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3510
out_signature="a{oa{sa{sv}}}")
3511
def GetManagedObjects(self):
3512
"""D-Bus method"""
3513
return dbus.Dictionary(
3514
{client.dbus_object_path:
3515
dbus.Dictionary(
3516
{interface: client.GetAll(interface)
3517
for interface in
3518
client._get_all_interface_names()})
3519
for client in tcp_server.clients.values()})
3520
3521
def client_added_signal(self, client):
3522
"""Send the new standard signal and the old signal"""
3523
if use_dbus:
3524
# New standard signal
3525
self.InterfacesAdded(
3526
client.dbus_object_path,
3527
dbus.Dictionary(
3528
{interface: client.GetAll(interface)
3529
for interface in
3530
client._get_all_interface_names()}))
3531
# Old signal
3532
self.ClientAdded(client.dbus_object_path)
3533
3534
def client_removed_signal(self, client):
3535
"""Send the new standard signal and the old signal"""
3536
if use_dbus:
3537
# New standard signal
3538
self.InterfacesRemoved(
3539
client.dbus_object_path,
3540
client._get_all_interface_names())
3541
# Old signal
3542
self.ClientRemoved(client.dbus_object_path,
3543
client.name)
3544
3545
mandos_dbus_service = MandosDBusService()
3546
3547
# Save modules to variables to exempt the modules from being
3548
# unloaded before the function registered with atexit() is run.
3549
mp = multiprocessing
3550
wn = wnull
3551
2382
3552
def cleanup():
2383
3553
"Cleanup function; run on exit"
2384
service.cleanup()
2385
2386
multiprocessing.active_children()
3554
if zeroconf:
3555
service.cleanup()
3556
3557
mp.active_children()
3558
wn.close()
2387
3559
if not (tcp_server.clients or client_settings):
2388
3560
return
2389
3561
2390
3562
# Store client before exiting. Secrets are encrypted with key
2391
3563
# based on what config file has. If config file is
2392
3564
# removed/edited, old secret will thus be unrecovable.
2393
3565
clients = {}
2394
3566
with PGPEngine() as pgp:
2395
for client in tcp_server.clients.itervalues():
3567
for client in tcp_server.clients.values():
2396
3568
key = client_settings[client.name]["secret"]
2397
3569
client.encrypted_secret = pgp.encrypt(client.secret,
2398
3570
key)
2399
3571
client_dict = {}
2400
3572
2401
3573
# A list of attributes that can not be pickled
2402
3574
# + secret.
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3575
exclude = {"bus", "changedstate", "secret",
3576
"checker", "server_settings"}
3577
for name, typ in inspect.getmembers(dbus.service
3578
.Object):
2407
3579
exclude.add(name)
2408
3580
2409
3581
client_dict["encrypted_secret"] = (client
2410
3582
.encrypted_secret)
2411
3583
for attr in client.client_structure:
2412
3584
if attr not in exclude:
2413
3585
client_dict[attr] = getattr(client, attr)
2414
3586
2415
3587
clients[client.name] = client_dict
2416
3588
del client_settings[client.name]["secret"]
2417
3589
2418
3590
try:
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3591
with tempfile.NamedTemporaryFile(
3592
mode="wb",
3593
suffix=".pickle",
3594
prefix="clients-",
3595
dir=os.path.dirname(stored_state_path),
3596
delete=False) as stored_state:
3597
pickle.dump((clients, client_settings), stored_state,
3598
protocol=2)
3599
tempname = stored_state.name
2425
3600
os.rename(tempname, stored_state_path)
2426
3601
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
3602
if not debug:
2430
3603
try:
2431
3604
os.remove(tempname)
2432
3605
except NameError:
2433
3606
pass
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
3607
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3608
log.warning("Could not save persistent state: %s",
3609
os.strerror(e.errno))
3610
else:
3611
log.warning("Could not save persistent state:",
3612
exc_info=e)
3613
raise
3614
2438
3615
# Delete all clients, and settings from config
2439
3616
while tcp_server.clients:
2440
3617
name, client = tcp_server.clients.popitem()
2441
3618
if use_dbus:
2442
3619
client.remove_from_connection()
2443
# Don't signal anything except ClientRemoved
3620
# Don't signal the disabling
2444
3621
client.disable(quiet=True)
3622
# Emit D-Bus signal for removal
2445
3623
if use_dbus:
2446
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
2449
client.name)
3624
mandos_dbus_service.client_removed_signal(client)
2450
3625
client_settings.clear()
2451
3626
2452
3627
atexit.register(cleanup)
2453
2454
for client in tcp_server.clients.itervalues():
3628
3629
for client in tcp_server.clients.values():
2455
3630
if use_dbus:
2456
# Emit D-Bus signal
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3631
# Emit D-Bus signal for adding
3632
mandos_dbus_service.client_added_signal(client)
2458
3633
# Need to initiate checking of clients
2459
3634
if client.enabled:
2460
client.init_checker()
2461
3635
client.init_checker(randomize_start=True)
3636
2462
3637
tcp_server.enable()
2463
3638
tcp_server.server_activate()
2464
3639
2465
3640
# Find out what port we got
2466
service.port = tcp_server.socket.getsockname()[1]
3641
if zeroconf:
3642
service.port = tcp_server.socket.getsockname()[1]
2467
3643
if use_ipv6:
2468
logger.info("Now listening on address %r, port %d,"
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3644
log.info("Now listening on address %r, port %d, flowinfo %d,"
3645
" scope_id %d", *tcp_server.socket.getsockname())
2471
3646
else: # IPv4
2472
logger.info("Now listening on address %r, port %d"
2473
% tcp_server.socket.getsockname())
2474
2475
#service.interface = tcp_server.socket.getsockname()[3]
2476
3647
log.info("Now listening on address %r, port %d",
3648
*tcp_server.socket.getsockname())
3649
3650
# service.interface = tcp_server.socket.getsockname()[3]
3651
2477
3652
try:
2478
# From the Avahi example code
2479
try:
2480
service.activate()
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
2483
cleanup()
2484
sys.exit(1)
2485
# End of Avahi example code
2486
2487
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2488
lambda *args, **kwargs:
2489
(tcp_server.handle_request
2490
(*args[2:], **kwargs) or True))
2491
2492
logger.debug("Starting main loop")
3653
if zeroconf:
3654
# From the Avahi example code
3655
try:
3656
service.activate()
3657
except dbus.exceptions.DBusException as error:
3658
log.critical("D-Bus Exception", exc_info=error)
3659
cleanup()
3660
sys.exit(1)
3661
# End of Avahi example code
3662
3663
GLib.io_add_watch(
3664
GLib.IOChannel.unix_new(tcp_server.fileno()),
3665
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3666
lambda *args, **kwargs: (tcp_server.handle_request
3667
(*args[2:], **kwargs) or True))
3668
3669
log.debug("Starting main loop")
2493
3670
main_loop.run()
2494
3671
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
3672
log.critical("Avahi Error", exc_info=error)
2496
3673
cleanup()
2497
3674
sys.exit(1)
2498
3675
except KeyboardInterrupt:
2499
3676
if debug:
2500
3677
print("", file=sys.stderr)
2501
logger.debug("Server received KeyboardInterrupt")
2502
logger.debug("Server exiting")
3678
log.debug("Server received KeyboardInterrupt")
3679
log.debug("Server exiting")
2503
3680
# Must run before the D-Bus bus name gets deregistered
2504
3681
cleanup()
2505
3682
2506
if __name__ == '__main__':
2507
main()
3683
3684
def parse_test_args():
3685
# type: () -> argparse.Namespace
3686
parser = argparse.ArgumentParser(add_help=False)
3687
parser.add_argument("--check", action="store_true")
3688
parser.add_argument("--prefix", )
3689
args, unknown_args = parser.parse_known_args()
3690
if args.check:
3691
# Remove test options from sys.argv
3692
sys.argv[1:] = unknown_args
3693
return args
3694
3695
# Add all tests from doctest strings
3696
def load_tests(loader, tests, none):
3697
import doctest
3698
tests.addTests(doctest.DocTestSuite())
3699
return tests
3700
3701
if __name__ == "__main__":
3702
options = parse_test_args()
3703
try:
3704
if options.check:
3705
extra_test_prefix = options.prefix
3706
if extra_test_prefix is not None:
3707
if not (unittest.main(argv=[""], exit=False)
3708
.result.wasSuccessful()):
3709
sys.exit(1)
3710
class ExtraTestLoader(unittest.TestLoader):
3711
testMethodPrefix = extra_test_prefix
3712
# Call using ./scriptname --test [--verbose]
3713
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3714
else:
3715
unittest.main(argv=[""])
3716
else:
3717
main()
3718
finally:
3719
logging.shutdown()
3720
3721
# Local Variables:
3722
# run-tests:
3723
# (lambda (&optional extra)
3724
# (if (not (funcall run-tests-in-test-buffer default-directory
3725
# extra))
3726
# (funcall show-test-buffer-in-test-window)
3727
# (funcall remove-test-window)
3728
# (if extra (message "Extra tests run successfully!"))))
3729
# run-tests-in-test-buffer:
3730
# (lambda (dir &optional extra)
3731
# (with-current-buffer (get-buffer-create "*Test*")
3732
# (setq buffer-read-only nil
3733
# default-directory dir)
3734
# (erase-buffer)
3735
# (compilation-mode))
3736
# (let ((process-result
3737
# (let ((inhibit-read-only t))
3738
# (process-file-shell-command
3739
# (funcall get-command-line extra) nil "*Test*"))))
3740
# (and (numberp process-result)
3741
# (= process-result 0))))
3742
# get-command-line:
3743
# (lambda (&optional extra)
3744
# (let ((quoted-script
3745
# (shell-quote-argument (funcall get-script-name))))
3746
# (format
3747
# (concat "%s --check" (if extra " --prefix=atest" ""))
3748
# quoted-script)))
3749
# get-script-name:
3750
# (lambda ()
3751
# (if (fboundp 'file-local-name)
3752
# (file-local-name (buffer-file-name))
3753
# (or (file-remote-p (buffer-file-name) 'localname)
3754
# (buffer-file-name))))
3755
# remove-test-window:
3756
# (lambda ()
3757
# (let ((test-window (get-buffer-window "*Test*")))
3758
# (if test-window (delete-window test-window))))
3759
# show-test-buffer-in-test-window:
3760
# (lambda ()
3761
# (when (not (get-buffer-window-list "*Test*"))
3762
# (setq next-error-last-buffer (get-buffer "*Test*"))
3763
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3764
# (display-buffer-overriding-action
3765
# `((display-buffer-in-side-window) (side . ,side)
3766
# (window-height . fit-window-to-buffer)
3767
# (window-width . fit-window-to-buffer))))
3768
# (display-buffer "*Test*"))))
3769
# eval:
3770
# (progn
3771
# (let* ((run-extra-tests (lambda () (interactive)
3772
# (funcall run-tests t)))
3773
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3774
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3775
# (setq minor-mode-overriding-map-alist
3776
# (cons `(run-tests . ,outer-keymap)
3777
# minor-mode-overriding-map-alist)))
3778
# (add-hook 'after-save-hook run-tests 90 t))
3779
# End:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0