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- Committer: Teddy Hogeborn
- Date: 2019-07-25 21:42:40 UTC
- mto: This revision was merged to the branch mainline in revision 384.
- Revision ID: teddy@recompile.se-20190725214240-31i9qehf60xb8yu4
Use hexadecimal unicode character references, not decimal
* mandos-options.xml (priority): Use "​" instead of "​"
to make it slightly more clear that ZERO WIDTH SPACE is intended.
* mandos-options.xml (priority): Use "​" instead of "​"
to make it slightly more clear that ZERO WIDTH SPACE is intended.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
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# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
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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
#
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13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 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 © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 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
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
68
80
69
81
import dbus
70
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import dbus.service
71
import gobject
72
import avahi
83
from gi.repository import GLib
73
84
from dbus.mainloop.glib import DBusGMainLoop
74
85
import ctypes
75
86
import ctypes.util
76
87
import xml.dom.minidom
77
88
import inspect
78
import GnuPGInterface
79
89
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# Try to find the value of SO_BINDTODEVICE:
80
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
81
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
95
except AttributeError:
83
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
84
99
from IN import SO_BINDTODEVICE
85
100
except ImportError:
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.4"
90
119
stored_state_file = "clients.pickle"
91
120
92
121
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
122
syslogger = None
96
123
97
124
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
101
127
except (OSError, AttributeError):
128
102
129
def if_nametoindex(interface):
103
130
"Get an interface index the hard way, i.e. using fcntl()"
104
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
132
with contextlib.closing(socket.socket()) as s:
106
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
136
return interface_index
112
137
113
138
114
def initlogger(level=logging.WARNING):
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
115
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"""init logger and add loglevel"""
116
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
117
162
syslogger.setFormatter(logging.Formatter
118
163
('Mandos [%(process)d]: %(levelname)s:'
119
164
' %(message)s'))
120
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logger.addHandler(syslogger)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
128
174
logger.setLevel(level)
129
175
130
176
135
181
136
182
class PGPEngine(object):
137
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
138
185
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
186
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
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
147
206
def __enter__(self):
148
207
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
208
209
def __exit__(self, exc_type, exc_value, traceback):
151
210
self._cleanup()
152
211
return False
153
212
154
213
def __del__(self):
155
214
self._cleanup()
156
215
157
216
def _cleanup(self):
158
217
if self.tempdir is not None:
159
218
# Delete contents of tempdir
160
219
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
220
topdown=False):
162
221
for filename in files:
163
222
os.remove(os.path.join(root, filename))
164
223
for dirname in dirs:
166
225
# Remove tempdir
167
226
os.rmdir(self.tempdir)
168
227
self.tempdir = None
169
228
170
229
def password_encode(self, password):
171
230
# Passphrase can not be empty and can not contain newlines or
172
231
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
175
240
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
190
256
return ciphertext
191
257
192
258
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
207
274
return decrypted_plaintext
208
275
209
276
277
# Pretend that we have an Avahi module
278
class avahi(object):
279
"""This isn't so much a class as it is a module-like namespace."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
210
302
211
303
class AvahiError(Exception):
212
304
def __init__(self, value, *args, **kwargs):
213
305
self.value = value
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
217
309
218
310
class AvahiServiceError(AvahiError):
219
311
pass
220
312
313
221
314
class AvahiGroupError(AvahiError):
222
315
pass
223
316
224
317
225
318
class AvahiService(object):
226
319
"""An Avahi (Zeroconf) service.
227
320
228
321
Attributes:
229
322
interface: integer; avahi.IF_UNSPEC or an interface index.
230
323
Used to optionally bind to the specified interface.
231
324
name: string; Example: 'Mandos'
232
325
type: string; Example: '_mandos._tcp'.
233
See <http://www.dns-sd.org/ServiceTypes.html>
326
See <https://www.iana.org/assignments/service-names-port-numbers>
234
327
port: integer; what port to announce
235
328
TXT: list of strings; TXT record for the service
236
329
domain: string; Domain to publish on, default to .local if empty.
242
335
server: D-Bus Server
243
336
bus: dbus.SystemBus()
244
337
"""
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
249
350
self.interface = interface
250
351
self.name = name
251
352
self.type = servicetype
260
361
self.server = None
261
362
self.bus = bus
262
363
self.entry_group_state_changed_match = None
263
def rename(self):
364
365
def rename(self, remove=True):
264
366
"""Derived from the Avahi example code"""
265
367
if self.rename_count >= self.max_renames:
266
368
logger.critical("No suitable Zeroconf service name found"
267
369
" after %i retries, exiting.",
268
370
self.rename_count)
269
371
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
272
375
logger.info("Changing Zeroconf service name to %r ...",
273
376
self.name)
274
self.remove()
377
if remove:
378
self.remove()
275
379
try:
276
380
self.add()
277
381
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
282
391
def remove(self):
283
392
"""Derived from the Avahi example code"""
284
393
if self.entry_group_state_changed_match is not None:
286
395
self.entry_group_state_changed_match = None
287
396
if self.group is not None:
288
397
self.group.Reset()
398
289
399
def add(self):
290
400
"""Derived from the Avahi example code"""
291
401
self.remove()
308
418
dbus.UInt16(self.port),
309
419
avahi.string_array_to_txt_array(self.TXT))
310
420
self.group.Commit()
421
311
422
def entry_group_state_changed(self, state, error):
312
423
"""Derived from the Avahi example code"""
313
424
logger.debug("Avahi entry group state change: %i", state)
314
425
315
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
316
427
logger.debug("Zeroconf service established.")
317
428
elif state == avahi.ENTRY_GROUP_COLLISION:
319
430
self.rename()
320
431
elif state == avahi.ENTRY_GROUP_FAILURE:
321
432
logger.critical("Avahi: Error in group state changed %s",
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
325
436
def cleanup(self):
326
437
"""Derived from the Avahi example code"""
327
438
if self.group is not None:
332
443
pass
333
444
self.group = None
334
445
self.remove()
446
335
447
def server_state_changed(self, state, error=None):
336
448
"""Derived from the Avahi example code"""
337
449
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
345
456
if state in bad_states:
346
457
if bad_states[state] is not None:
347
458
if error is None:
350
461
logger.error(bad_states[state] + ": %r", error)
351
462
self.cleanup()
352
463
elif state == avahi.SERVER_RUNNING:
353
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
354
476
else:
355
477
if error is None:
356
478
logger.debug("Unknown state: %r", state)
357
479
else:
358
480
logger.debug("Unknown state: %r: %r", state, error)
481
359
482
def activate(self):
360
483
"""Derived from the Avahi example code"""
361
484
if self.server is None:
365
488
follow_name_owner_changes=True),
366
489
avahi.DBUS_INTERFACE_SERVER)
367
490
self.server.connect_to_signal("StateChanged",
368
self.server_state_changed)
491
self.server_state_changed)
369
492
self.server_state_changed(self.server.GetState())
370
493
494
371
495
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
496
def rename(self, *args, **kwargs):
373
497
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
379
502
return ret
380
503
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
387
817
class Client(object):
388
818
"""A representation of a client host served by this server.
389
819
390
820
Attributes:
391
821
approved: bool(); 'None' if not yet approved/disapproved
392
822
approval_delay: datetime.timedelta(); Time to wait for approval
394
824
checker: subprocess.Popen(); a running checker process used
395
825
to see if the client lives.
396
826
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
827
checker_callback_tag: a GLib event source tag, or None
398
828
checker_command: string; External command which is run to check
399
829
if client lives. %() expansions are done at
400
830
runtime with vars(self) as dict, so that for
401
831
instance %(name)s can be used in the command.
402
checker_initiator_tag: a gobject event source tag, or None
832
checker_initiator_tag: a GLib event source tag, or None
403
833
created: datetime.datetime(); (UTC) object creation
404
834
client_structure: Object describing what attributes a client has
405
835
and is used for storing the client at exit
406
836
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
837
disable_initiator_tag: a GLib event source tag, or None
408
838
enabled: bool()
409
839
fingerprint: string (40 or 32 hexadecimal digits); used to
410
uniquely identify the client
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
411
843
host: string; available for use by the checker command
412
844
interval: datetime.timedelta(); How often to start a new checker
413
845
last_approval_request: datetime.datetime(); (UTC) or None
414
846
last_checked_ok: datetime.datetime(); (UTC) or None
415
416
847
last_checker_status: integer between 0 and 255 reflecting exit
417
848
status of last checker. -1 reflects crashed
418
checker, or None.
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
419
852
last_enabled: datetime.datetime(); (UTC) or None
420
853
name: string; from the config file, used in log messages and
421
854
D-Bus identifiers
422
855
secret: bytestring; sent verbatim (over TLS) to client
423
856
timeout: datetime.timedelta(); How long from last_checked_ok
424
857
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
858
extended_timeout: extra long timeout when secret has been sent
426
859
runtime_expansions: Allowed attributes for runtime expansion.
427
860
expires: datetime.datetime(); time (UTC) when a client will be
428
861
disabled, or None
862
server_settings: The server_settings dict from main()
429
863
"""
430
864
431
865
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
434
869
"last_enabled", "name", "timeout")
435
436
def timeout_milliseconds(self):
437
"Return the 'timeout' attribute in milliseconds"
438
return timedelta_to_milliseconds(self.timeout)
439
440
def extended_timeout_milliseconds(self):
441
"Return the 'extended_timeout' attribute in milliseconds"
442
return timedelta_to_milliseconds(self.extended_timeout)
443
444
def interval_milliseconds(self):
445
"Return the 'interval' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.interval)
447
448
def approval_delay_milliseconds(self):
449
return timedelta_to_milliseconds(self.approval_delay)
450
451
def __init__(self, name = None, config=None):
452
"""Note: the 'checker' key in 'config' sets the
453
'checker_command' attribute and *not* the 'checker'
454
attribute."""
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
455
937
self.name = name
456
if config is None:
457
config = {}
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
458
955
logger.debug("Creating client %r", self.name)
459
# Uppercase and remove spaces from fingerprint for later
460
# comparison purposes with return value from the fingerprint()
461
# function
462
self.fingerprint = (config["fingerprint"].upper()
463
.replace(" ", ""))
956
logger.debug(" Key ID: %s", self.key_id)
464
957
logger.debug(" Fingerprint: %s", self.fingerprint)
465
if "secret" in config:
466
self.secret = config["secret"].decode("base64")
467
elif "secfile" in config:
468
with open(os.path.expanduser(os.path.expandvars
469
(config["secfile"])),
470
"rb") as secfile:
471
self.secret = secfile.read()
472
else:
473
raise TypeError("No secret or secfile for client %s"
474
% self.name)
475
self.host = config.get("host", "")
476
self.created = datetime.datetime.utcnow()
477
self.enabled = config.get("enabled", True)
478
self.last_approval_request = None
479
if self.enabled:
480
self.last_enabled = datetime.datetime.utcnow()
481
else:
482
self.last_enabled = None
483
self.last_checked_ok = None
484
self.last_checker_status = None
485
self.timeout = string_to_delta(config["timeout"])
486
self.extended_timeout = string_to_delta(config
487
["extended_timeout"])
488
self.interval = string_to_delta(config["interval"])
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
489
962
self.checker = None
490
963
self.checker_initiator_tag = None
491
964
self.disable_initiator_tag = None
492
if self.enabled:
493
self.expires = datetime.datetime.utcnow() + self.timeout
494
else:
495
self.expires = None
496
965
self.checker_callback_tag = None
497
self.checker_command = config["checker"]
498
966
self.current_checker_command = None
499
967
self.approved = None
500
self.approved_by_default = config.get("approved_by_default",
501
True)
502
968
self.approvals_pending = 0
503
self.approval_delay = string_to_delta(
504
config["approval_delay"])
505
self.approval_duration = string_to_delta(
506
config["approval_duration"])
507
self.changedstate = (multiprocessing_manager
508
.Condition(multiprocessing_manager
509
.Lock()))
510
self.client_structure = [attr for attr in
511
self.__dict__.iterkeys()
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
512
973
if not attr.startswith("_")]
513
974
self.client_structure.append("client_structure")
514
515
for name, t in inspect.getmembers(type(self),
516
lambda obj:
517
isinstance(obj,
518
property)):
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
519
978
if not name.startswith("_"):
520
979
self.client_structure.append(name)
521
980
522
981
# Send notice to process children that client state has changed
523
982
def send_changedstate(self):
524
983
with self.changedstate:
525
984
self.changedstate.notify_all()
526
985
527
986
def enable(self):
528
987
"""Start this client's checker and timeout hooks"""
529
988
if getattr(self, "enabled", False):
530
989
# Already enabled
531
990
return
532
self.send_changedstate()
533
991
self.expires = datetime.datetime.utcnow() + self.timeout
534
992
self.enabled = True
535
993
self.last_enabled = datetime.datetime.utcnow()
536
994
self.init_checker()
537
995
self.send_changedstate()
996
538
997
def disable(self, quiet=True):
539
998
"""Disable this client."""
540
999
if not getattr(self, "enabled", False):
541
1000
return False
542
1001
if not quiet:
543
self.send_changedstate()
544
if not quiet:
545
1002
logger.info("Disabling client %s", self.name)
546
if getattr(self, "disable_initiator_tag", False):
547
gobject.source_remove(self.disable_initiator_tag)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
548
1005
self.disable_initiator_tag = None
549
1006
self.expires = None
550
if getattr(self, "checker_initiator_tag", False):
551
gobject.source_remove(self.checker_initiator_tag)
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
552
1009
self.checker_initiator_tag = None
553
1010
self.stop_checker()
554
1011
self.enabled = False
555
# Do not run this again if called by a gobject.timeout_add
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
556
1015
return False
557
1016
558
1017
def __del__(self):
559
1018
self.disable()
560
1019
561
1020
def init_checker(self):
562
1021
# Schedule a new checker to be started an 'interval' from now,
563
1022
# and every interval from then on.
564
self.checker_initiator_tag = (gobject.timeout_add
565
(self.interval_milliseconds(),
566
self.start_checker))
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
567
1028
# Schedule a disable() when 'timeout' has passed
568
self.disable_initiator_tag = (gobject.timeout_add
569
(self.timeout_milliseconds(),
570
self.disable))
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
571
1033
# Also start a new checker *right now*.
572
1034
self.start_checker()
573
574
def checker_callback(self, pid, condition, command):
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
575
1038
"""The checker has completed, so take appropriate actions."""
576
1039
self.checker_callback_tag = None
577
1040
self.checker = None
578
if os.WIFEXITED(condition):
579
self.last_checker_status = os.WEXITSTATUS(condition)
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
580
1048
if self.last_checker_status == 0:
581
1049
logger.info("Checker for %(name)s succeeded",
582
1050
vars(self))
583
1051
self.checked_ok()
584
1052
else:
585
logger.info("Checker for %(name)s failed",
586
vars(self))
1053
logger.info("Checker for %(name)s failed", vars(self))
587
1054
else:
588
1055
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
589
1057
logger.warning("Checker for %(name)s crashed?",
590
1058
vars(self))
591
592
def checked_ok(self, timeout=None):
593
"""Bump up the timeout for this client.
594
595
This should only be called when the client has been seen,
596
alive and well.
597
"""
1059
return False
1060
1061
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
1063
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
598
1070
if timeout is None:
599
1071
timeout = self.timeout
600
self.last_checked_ok = datetime.datetime.utcnow()
601
1072
if self.disable_initiator_tag is not None:
602
gobject.source_remove(self.disable_initiator_tag)
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
603
1075
if getattr(self, "enabled", False):
604
self.disable_initiator_tag = (gobject.timeout_add
605
(timedelta_to_milliseconds
606
(timeout), self.disable))
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
607
1078
self.expires = datetime.datetime.utcnow() + timeout
608
1079
609
1080
def need_approval(self):
610
1081
self.last_approval_request = datetime.datetime.utcnow()
611
1082
612
1083
def start_checker(self):
613
1084
"""Start a new checker subprocess if one is not running.
614
1085
615
1086
If a checker already exists, leave it running and do
616
1087
nothing."""
617
1088
# The reason for not killing a running checker is that if we
618
# did that, then if a checker (for some reason) started
619
# running slowly and taking more than 'interval' time, the
620
# client would inevitably timeout, since no checker would get
621
# a chance to run to completion. If we instead leave running
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
622
1093
# checkers alone, the checker would have to take more time
623
1094
# than 'timeout' for the client to be disabled, which is as it
624
1095
# should be.
625
626
# If a checker exists, make sure it is not a zombie
627
try:
628
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
629
except (AttributeError, OSError) as error:
630
if (isinstance(error, OSError)
631
and error.errno != errno.ECHILD):
632
raise error
633
else:
634
if pid:
635
logger.warning("Checker was a zombie")
636
gobject.source_remove(self.checker_callback_tag)
637
self.checker_callback(pid, status,
638
self.current_checker_command)
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
639
1101
# Start a new checker if needed
640
1102
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
641
1107
try:
642
# In case checker_command has exactly one % operator
643
command = self.checker_command % self.host
644
except TypeError:
645
# Escape attributes for the shell
646
escaped_attrs = dict(
647
(attr,
648
re.escape(unicode(str(getattr(self, attr, "")),
649
errors=
650
'replace')))
651
for attr in
652
self.runtime_expansions)
653
654
try:
655
command = self.checker_command % escaped_attrs
656
except TypeError as error:
657
logger.error('Could not format string "%s":'
658
' %s', self.checker_command, error)
659
return True # Try again later
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
return True # Try again later
660
1114
self.current_checker_command = command
661
try:
662
logger.info("Starting checker %r for %s",
663
command, self.name)
664
# We don't need to redirect stdout and stderr, since
665
# in normal mode, that is already done by daemon(),
666
# and in debug mode we don't want to. (Stdin is
667
# always replaced by /dev/null.)
668
self.checker = subprocess.Popen(command,
669
close_fds=True,
670
shell=True, cwd="/")
671
self.checker_callback_tag = (gobject.child_watch_add
672
(self.checker.pid,
673
self.checker_callback,
674
data=command))
675
# The checker may have completed before the gobject
676
# watch was added. Check for this.
677
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
678
if pid:
679
gobject.source_remove(self.checker_callback_tag)
680
self.checker_callback(pid, status, command)
681
except OSError as error:
682
logger.error("Failed to start subprocess: %s",
683
error)
684
# Re-run this periodically if run by gobject.timeout_add
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
685
1141
return True
686
1142
687
1143
def stop_checker(self):
688
1144
"""Force the checker process, if any, to stop."""
689
1145
if self.checker_callback_tag:
690
gobject.source_remove(self.checker_callback_tag)
1146
GLib.source_remove(self.checker_callback_tag)
691
1147
self.checker_callback_tag = None
692
1148
if getattr(self, "checker", None) is None:
693
1149
return
694
1150
logger.debug("Stopping checker for %(name)s", vars(self))
695
try:
696
os.kill(self.checker.pid, signal.SIGTERM)
697
#time.sleep(0.5)
698
#if self.checker.poll() is None:
699
# os.kill(self.checker.pid, signal.SIGKILL)
700
except OSError as error:
701
if error.errno != errno.ESRCH: # No such process
702
raise
1151
self.checker.terminate()
703
1152
self.checker = None
704
1153
705
1154
706
def dbus_service_property(dbus_interface, signature="v",
707
access="readwrite", byte_arrays=False):
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
708
1159
"""Decorators for marking methods of a DBusObjectWithProperties to
709
1160
become properties on the D-Bus.
710
1161
711
1162
The decorated method will be called with no arguments by "Get"
712
1163
and with one argument by "Set".
713
1164
714
1165
The parameters, where they are supported, are the same as
715
1166
dbus.service.method, except there is only "signature", since the
716
1167
type from Get() and the type sent to Set() is the same.
719
1170
# "Set" method, so we fail early here:
720
1171
if byte_arrays and signature != "ay":
721
1172
raise ValueError("Byte arrays not supported for non-'ay'"
722
" signature %r" % signature)
1173
" signature {!r}".format(signature))
1174
723
1175
def decorator(func):
724
1176
func._dbus_is_property = True
725
1177
func._dbus_interface = dbus_interface
728
1180
func._dbus_name = func.__name__
729
1181
if func._dbus_name.endswith("_dbus_property"):
730
1182
func._dbus_name = func._dbus_name[:-14]
731
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
732
return func
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
733
1229
return decorator
734
1230
735
1231
736
1232
class DBusPropertyException(dbus.exceptions.DBusException):
737
1233
"""A base class for D-Bus property-related exceptions
738
1234
"""
739
def __unicode__(self):
740
return unicode(str(self))
1235
pass
741
1236
742
1237
743
1238
class DBusPropertyAccessException(DBusPropertyException):
752
1247
pass
753
1248
754
1249
755
class DBusObjectWithProperties(dbus.service.Object):
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
756
1340
"""A D-Bus object with properties.
757
1341
758
1342
Classes inheriting from this can use the dbus_service_property
759
1343
decorator to expose methods as D-Bus properties. It exposes the
760
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
761
1345
"""
762
763
@staticmethod
764
def _is_dbus_property(obj):
765
return getattr(obj, "_dbus_is_property", False)
766
767
def _get_all_dbus_properties(self):
768
"""Returns a generator of (name, attribute) pairs
769
"""
770
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
771
for cls in self.__class__.__mro__
772
for name, prop in
773
inspect.getmembers(cls, self._is_dbus_property))
774
1346
775
1347
def _get_dbus_property(self, interface_name, property_name):
776
1348
"""Returns a bound method if one exists which is a D-Bus
777
1349
property with the specified name and interface.
778
1350
"""
779
for cls in self.__class__.__mro__:
780
for name, value in (inspect.getmembers
781
(cls, self._is_dbus_property)):
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
782
1354
if (value._dbus_name == property_name
783
1355
and value._dbus_interface == interface_name):
784
1356
return value.__get__(self)
785
1357
786
1358
# No such property
787
raise DBusPropertyNotFound(self.dbus_object_path + ":"
788
+ interface_name + "."
789
+ property_name)
790
791
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
792
1373
out_signature="v")
793
1374
def Get(self, interface_name, property_name):
794
1375
"""Standard D-Bus property Get() method, see D-Bus standard.
800
1381
if not hasattr(value, "variant_level"):
801
1382
return value
802
1383
return type(value)(value, variant_level=value.variant_level+1)
803
1384
804
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
805
1386
def Set(self, interface_name, property_name, value):
806
1387
"""Standard D-Bus property Set() method, see D-Bus standard.
812
1393
# The byte_arrays option is not supported yet on
813
1394
# signatures other than "ay".
814
1395
if prop._dbus_signature != "ay":
815
raise ValueError
816
value = dbus.ByteArray(''.join(unichr(byte)
817
for byte in value))
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
for byte in value))
818
1401
prop(value)
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
821
1405
out_signature="a{sv}")
822
1406
def GetAll(self, interface_name):
823
1407
"""Standard D-Bus property GetAll() method, see D-Bus
824
1408
standard.
825
1409
826
1410
Note: Will not include properties with access="write".
827
1411
"""
828
1412
properties = {}
829
for name, prop in self._get_all_dbus_properties():
1413
for name, prop in self._get_all_dbus_things("property"):
830
1414
if (interface_name
831
1415
and interface_name != prop._dbus_interface):
832
1416
# Interface non-empty but did not match
838
1422
if not hasattr(value, "variant_level"):
839
1423
properties[name] = value
840
1424
continue
841
properties[name] = type(value)(value, variant_level=
842
value.variant_level+1)
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
843
1427
return dbus.Dictionary(properties, signature="sv")
844
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
845
1437
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
846
1438
out_signature="s",
847
1439
path_keyword='object_path',
848
1440
connection_keyword='connection')
849
1441
def Introspect(self, object_path, connection):
850
"""Standard D-Bus method, overloaded to insert property tags.
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
851
1445
"""
852
xmlstring = dbus.service.Object.Introspect(self, object_path,
853
connection)
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
854
1449
try:
855
1450
document = xml.dom.minidom.parseString(xmlstring)
1451
856
1452
def make_tag(document, name, prop):
857
1453
e = document.createElement("property")
858
1454
e.setAttribute("name", name)
859
1455
e.setAttribute("type", prop._dbus_signature)
860
1456
e.setAttribute("access", prop._dbus_access)
861
1457
return e
1458
862
1459
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
863
1461
for tag in (make_tag(document, name, prop)
864
1462
for name, prop
865
in self._get_all_dbus_properties()
1463
in self._get_all_dbus_things("property")
866
1464
if prop._dbus_interface
867
1465
== if_tag.getAttribute("name")):
868
1466
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
869
1483
# Add the names to the return values for the
870
1484
# "org.freedesktop.DBus.Properties" methods
871
1485
if (if_tag.getAttribute("name")
886
1500
except (AttributeError, xml.dom.DOMException,
887
1501
xml.parsers.expat.ExpatError) as error:
888
1502
logger.error("Failed to override Introspection method",
889
error)
890
return xmlstring
891
892
893
def datetime_to_dbus (dt, variant_level=0):
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
894
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
895
1580
if dt is None:
896
return dbus.String("", variant_level = variant_level)
897
return dbus.String(dt.isoformat(),
898
variant_level=variant_level)
899
900
901
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
.__metaclass__):
903
"""Applied to an empty subclass of a D-Bus object, this metaclass
904
will add additional D-Bus attributes matching a certain pattern.
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
905
1607
"""
906
def __new__(mcs, name, bases, attr):
907
# Go through all the base classes which could have D-Bus
908
# methods, signals, or properties in them
909
for base in (b for b in bases
910
if issubclass(b, dbus.service.Object)):
911
# Go though all attributes of the base class
912
for attrname, attribute in inspect.getmembers(base):
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
913
1616
# Ignore non-D-Bus attributes, and D-Bus attributes
914
1617
# with the wrong interface name
915
1618
if (not hasattr(attribute, "_dbus_interface")
916
or not attribute._dbus_interface
917
.startswith("se.recompile.Mandos")):
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
918
1621
continue
919
1622
# Create an alternate D-Bus interface name based on
920
1623
# the current name
921
alt_interface = (attribute._dbus_interface
922
.replace("se.recompile.Mandos",
923
"se.bsnet.fukt.Mandos"))
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
924
1627
# Is this a D-Bus signal?
925
1628
if getattr(attribute, "_dbus_is_signal", False):
926
# Extract the original non-method function by
927
# black magic
928
nonmethod_func = (dict(
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
929
1633
zip(attribute.func_code.co_freevars,
930
attribute.__closure__))["func"]
931
.cell_contents)
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
932
1641
# Create a new, but exactly alike, function
933
1642
# object, and decorate it to be a new D-Bus signal
934
1643
# with the alternate D-Bus interface name
935
new_function = (dbus.service.signal
936
(alt_interface,
937
attribute._dbus_signature)
938
(types.FunctionType(
939
nonmethod_func.func_code,
940
nonmethod_func.func_globals,
941
nonmethod_func.func_name,
942
nonmethod_func.func_defaults,
943
nonmethod_func.func_closure)))
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
944
1655
# Define a creator of a function to call both the
945
# old and new functions, so both the old and new
946
# signals gets sent when the function is called
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
947
1659
def fixscope(func1, func2):
948
1660
"""This function is a scope container to pass
949
1661
func1 and func2 to the "call_both" function
950
1662
outside of its arguments"""
1663
1664
@functools.wraps(func2)
951
1665
def call_both(*args, **kwargs):
952
1666
"""This function will emit two D-Bus
953
1667
signals by calling func1 and func2"""
954
1668
func1(*args, **kwargs)
955
1669
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
956
1676
return call_both
957
1677
# Create the "call_both" function and add it to
958
1678
# the class
959
attr[attrname] = fixscope(attribute,
960
new_function)
1679
attr[attrname] = fixscope(attribute, new_function)
961
1680
# Is this a D-Bus method?
962
1681
elif getattr(attribute, "_dbus_is_method", False):
963
1682
# Create a new, but exactly alike, function
964
1683
# object. Decorate it to be a new D-Bus method
965
1684
# with the alternate D-Bus interface name. Add it
966
1685
# to the class.
967
attr[attrname] = (dbus.service.method
968
(alt_interface,
969
attribute._dbus_in_signature,
970
attribute._dbus_out_signature)
971
(types.FunctionType
972
(attribute.func_code,
973
attribute.func_globals,
974
attribute.func_name,
975
attribute.func_defaults,
976
attribute.func_closure)))
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
977
1698
# Is this a D-Bus property?
978
1699
elif getattr(attribute, "_dbus_is_property", False):
979
1700
# Create a new, but exactly alike, function
980
1701
# object, and decorate it to be a new D-Bus
981
1702
# property with the alternate D-Bus interface
982
1703
# name. Add it to the class.
983
attr[attrname] = (dbus_service_property
984
(alt_interface,
985
attribute._dbus_signature,
986
attribute._dbus_access,
987
attribute
988
._dbus_get_args_options
989
["byte_arrays"])
990
(types.FunctionType
991
(attribute.func_code,
992
attribute.func_globals,
993
attribute.func_name,
994
attribute.func_defaults,
995
attribute.func_closure)))
996
return type.__new__(mcs, name, bases, attr)
997
998
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
999
1756
class ClientDBus(Client, DBusObjectWithProperties):
1000
1757
"""A Client class using D-Bus
1001
1758
1002
1759
Attributes:
1003
1760
dbus_object_path: dbus.ObjectPath
1004
1761
bus: dbus.SystemBus()
1005
1762
"""
1006
1763
1007
1764
runtime_expansions = (Client.runtime_expansions
1008
+ ("dbus_object_path",))
1009
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1010
1769
# dbus.service.Object doesn't use super(), so we can't either.
1011
1012
def __init__(self, bus = None, *args, **kwargs):
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1013
1772
self.bus = bus
1014
1773
Client.__init__(self, *args, **kwargs)
1015
1016
self._approvals_pending = 0
1017
1774
# Only now, when this client is initialized, can it show up on
1018
1775
# the D-Bus
1019
client_object_name = unicode(self.name).translate(
1776
client_object_name = str(self.name).translate(
1020
1777
{ord("."): ord("_"),
1021
1778
ord("-"): ord("_")})
1022
self.dbus_object_path = (dbus.ObjectPath
1023
("/clients/" + client_object_name))
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1024
1781
DBusObjectWithProperties.__init__(self, self.bus,
1025
1782
self.dbus_object_path)
1026
1027
def notifychangeproperty(transform_func,
1028
dbus_name, type_func=lambda x: x,
1029
variant_level=1):
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
1030
1789
""" Modify a variable so that it's a property which announces
1031
1790
its changes to DBus.
1032
1791
1033
1792
transform_fun: Function that takes a value and a variant_level
1034
1793
and transforms it to a D-Bus type.
1035
1794
dbus_name: D-Bus name of the variable
1037
1796
to the D-Bus. Default: no transform
1038
1797
variant_level: D-Bus variant level. Default: 1
1039
1798
"""
1040
attrname = "_{0}".format(dbus_name)
1799
attrname = "_{}".format(dbus_name)
1800
1041
1801
def setter(self, value):
1042
1802
if hasattr(self, "dbus_object_path"):
1043
1803
if (not hasattr(self, attrname) or
1044
1804
type_func(getattr(self, attrname, None))
1045
1805
!= type_func(value)):
1046
dbus_value = transform_func(type_func(value),
1047
variant_level
1048
=variant_level)
1049
self.PropertyChanged(dbus.String(dbus_name),
1050
dbus_value)
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
1051
1821
setattr(self, attrname, value)
1052
1822
1053
1823
return property(lambda self: getattr(self, attrname), setter)
1054
1055
1824
1056
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1057
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1058
1827
"ApprovalPending",
1059
type_func = bool)
1828
type_func=bool)
1060
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1061
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1062
1831
"LastEnabled")
1063
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1064
type_func = lambda checker:
1065
checker is not None)
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1066
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1067
1836
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1068
1839
last_approval_request = notifychangeproperty(
1069
1840
datetime_to_dbus, "LastApprovalRequest")
1070
1841
approved_by_default = notifychangeproperty(dbus.Boolean,
1071
1842
"ApprovedByDefault")
1072
approval_delay = notifychangeproperty(dbus.UInt64,
1073
"ApprovalDelay",
1074
type_func =
1075
timedelta_to_milliseconds)
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1076
1846
approval_duration = notifychangeproperty(
1077
1847
dbus.UInt64, "ApprovalDuration",
1078
type_func = timedelta_to_milliseconds)
1848
type_func=lambda td: td.total_seconds() * 1000)
1079
1849
host = notifychangeproperty(dbus.String, "Host")
1080
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1081
type_func =
1082
timedelta_to_milliseconds)
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1083
1853
extended_timeout = notifychangeproperty(
1084
1854
dbus.UInt64, "ExtendedTimeout",
1085
type_func = timedelta_to_milliseconds)
1086
interval = notifychangeproperty(dbus.UInt64,
1087
"Interval",
1088
type_func =
1089
timedelta_to_milliseconds)
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1090
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1091
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1092
1863
del notifychangeproperty
1093
1864
1094
1865
def __del__(self, *args, **kwargs):
1095
1866
try:
1096
1867
self.remove_from_connection()
1099
1870
if hasattr(DBusObjectWithProperties, "__del__"):
1100
1871
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1101
1872
Client.__del__(self, *args, **kwargs)
1102
1103
def checker_callback(self, pid, condition, command,
1104
*args, **kwargs):
1105
self.checker_callback_tag = None
1106
self.checker = None
1107
if os.WIFEXITED(condition):
1108
exitstatus = os.WEXITSTATUS(condition)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1109
1881
# Emit D-Bus signal
1110
1882
self.CheckerCompleted(dbus.Int16(exitstatus),
1111
dbus.Int64(condition),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1112
1885
dbus.String(command))
1113
1886
else:
1114
1887
# Emit D-Bus signal
1115
1888
self.CheckerCompleted(dbus.Int16(-1),
1116
dbus.Int64(condition),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1117
1893
dbus.String(command))
1118
1119
return Client.checker_callback(self, pid, condition, command,
1120
*args, **kwargs)
1121
1894
return ret
1895
1122
1896
def start_checker(self, *args, **kwargs):
1123
old_checker = self.checker
1124
if self.checker is not None:
1125
old_checker_pid = self.checker.pid
1126
else:
1127
old_checker_pid = None
1897
old_checker_pid = getattr(self.checker, "pid", None)
1128
1898
r = Client.start_checker(self, *args, **kwargs)
1129
1899
# Only if new checker process was started
1130
1900
if (self.checker is not None
1132
1902
# Emit D-Bus signal
1133
1903
self.CheckerStarted(self.current_checker_command)
1134
1904
return r
1135
1905
1136
1906
def _reset_approved(self):
1137
1907
self.approved = None
1138
1908
return False
1139
1909
1140
1910
def approve(self, value=True):
1141
self.send_changedstate()
1142
1911
self.approved = value
1143
gobject.timeout_add(timedelta_to_milliseconds
1144
(self.approval_duration),
1145
self._reset_approved)
1146
1147
1148
## D-Bus methods, signals & properties
1149
_interface = "se.recompile.Mandos.Client"
1150
1151
## Signals
1152
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1153
1922
# CheckerCompleted - signal
1154
1923
@dbus.service.signal(_interface, signature="nxs")
1155
1924
def CheckerCompleted(self, exitcode, waitstatus, command):
1156
1925
"D-Bus signal"
1157
1926
pass
1158
1927
1159
1928
# CheckerStarted - signal
1160
1929
@dbus.service.signal(_interface, signature="s")
1161
1930
def CheckerStarted(self, command):
1162
1931
"D-Bus signal"
1163
1932
pass
1164
1933
1165
1934
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1166
1936
@dbus.service.signal(_interface, signature="sv")
1167
1937
def PropertyChanged(self, property, value):
1168
1938
"D-Bus signal"
1169
1939
pass
1170
1940
1171
1941
# GotSecret - signal
1172
1942
@dbus.service.signal(_interface)
1173
1943
def GotSecret(self):
1176
1946
server to mandos-client
1177
1947
"""
1178
1948
pass
1179
1949
1180
1950
# Rejected - signal
1181
1951
@dbus.service.signal(_interface, signature="s")
1182
1952
def Rejected(self, reason):
1183
1953
"D-Bus signal"
1184
1954
pass
1185
1955
1186
1956
# NeedApproval - signal
1187
1957
@dbus.service.signal(_interface, signature="tb")
1188
1958
def NeedApproval(self, timeout, default):
1189
1959
"D-Bus signal"
1190
1960
return self.need_approval()
1191
1192
# NeRwequest - signal
1193
@dbus.service.signal(_interface, signature="s")
1194
def NewRequest(self, ip):
1195
"""D-Bus signal
1196
Is sent after a client request a password.
1197
"""
1198
pass
1199
1200
## Methods
1201
1961
1962
# Methods
1963
1202
1964
# Approve - method
1203
1965
@dbus.service.method(_interface, in_signature="b")
1204
1966
def Approve(self, value):
1205
1967
self.approve(value)
1206
1968
1207
1969
# CheckedOK - method
1208
1970
@dbus.service.method(_interface)
1209
1971
def CheckedOK(self):
1210
1972
self.checked_ok()
1211
1973
1212
1974
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1213
1976
@dbus.service.method(_interface)
1214
1977
def Enable(self):
1215
1978
"D-Bus method"
1216
1979
self.enable()
1217
1980
1218
1981
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1219
1983
@dbus.service.method(_interface)
1220
1984
def StartChecker(self):
1221
1985
"D-Bus method"
1222
1986
self.start_checker()
1223
1987
1224
1988
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1225
1990
@dbus.service.method(_interface)
1226
1991
def Disable(self):
1227
1992
"D-Bus method"
1228
1993
self.disable()
1229
1994
1230
1995
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1231
1997
@dbus.service.method(_interface)
1232
1998
def StopChecker(self):
1233
1999
self.stop_checker()
1234
1235
## Properties
1236
2000
2001
# Properties
2002
1237
2003
# ApprovalPending - property
1238
2004
@dbus_service_property(_interface, signature="b", access="read")
1239
2005
def ApprovalPending_dbus_property(self):
1240
2006
return dbus.Boolean(bool(self.approvals_pending))
1241
2007
1242
2008
# ApprovedByDefault - property
1243
@dbus_service_property(_interface, signature="b",
2009
@dbus_service_property(_interface,
2010
signature="b",
1244
2011
access="readwrite")
1245
2012
def ApprovedByDefault_dbus_property(self, value=None):
1246
2013
if value is None: # get
1247
2014
return dbus.Boolean(self.approved_by_default)
1248
2015
self.approved_by_default = bool(value)
1249
2016
1250
2017
# ApprovalDelay - property
1251
@dbus_service_property(_interface, signature="t",
2018
@dbus_service_property(_interface,
2019
signature="t",
1252
2020
access="readwrite")
1253
2021
def ApprovalDelay_dbus_property(self, value=None):
1254
2022
if value is None: # get
1255
return dbus.UInt64(self.approval_delay_milliseconds())
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1256
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1257
2026
1258
2027
# ApprovalDuration - property
1259
@dbus_service_property(_interface, signature="t",
2028
@dbus_service_property(_interface,
2029
signature="t",
1260
2030
access="readwrite")
1261
2031
def ApprovalDuration_dbus_property(self, value=None):
1262
2032
if value is None: # get
1263
return dbus.UInt64(timedelta_to_milliseconds(
1264
self.approval_duration))
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1265
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1266
2036
1267
2037
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1268
2040
@dbus_service_property(_interface, signature="s", access="read")
1269
2041
def Name_dbus_property(self):
1270
2042
return dbus.String(self.name)
1271
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1272
2051
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1273
2054
@dbus_service_property(_interface, signature="s", access="read")
1274
2055
def Fingerprint_dbus_property(self):
1275
2056
return dbus.String(self.fingerprint)
1276
2057
1277
2058
# Host - property
1278
@dbus_service_property(_interface, signature="s",
2059
@dbus_service_property(_interface,
2060
signature="s",
1279
2061
access="readwrite")
1280
2062
def Host_dbus_property(self, value=None):
1281
2063
if value is None: # get
1282
2064
return dbus.String(self.host)
1283
self.host = unicode(value)
1284
2065
self.host = str(value)
2066
1285
2067
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1286
2070
@dbus_service_property(_interface, signature="s", access="read")
1287
2071
def Created_dbus_property(self):
1288
2072
return datetime_to_dbus(self.created)
1289
2073
1290
2074
# LastEnabled - property
1291
2075
@dbus_service_property(_interface, signature="s", access="read")
1292
2076
def LastEnabled_dbus_property(self):
1293
2077
return datetime_to_dbus(self.last_enabled)
1294
2078
1295
2079
# Enabled - property
1296
@dbus_service_property(_interface, signature="b",
2080
@dbus_service_property(_interface,
2081
signature="b",
1297
2082
access="readwrite")
1298
2083
def Enabled_dbus_property(self, value=None):
1299
2084
if value is None: # get
1302
2087
self.enable()
1303
2088
else:
1304
2089
self.disable()
1305
2090
1306
2091
# LastCheckedOK - property
1307
@dbus_service_property(_interface, signature="s",
2092
@dbus_service_property(_interface,
2093
signature="s",
1308
2094
access="readwrite")
1309
2095
def LastCheckedOK_dbus_property(self, value=None):
1310
2096
if value is not None:
1311
2097
self.checked_ok()
1312
2098
return
1313
2099
return datetime_to_dbus(self.last_checked_ok)
1314
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
1315
2106
# Expires - property
1316
2107
@dbus_service_property(_interface, signature="s", access="read")
1317
2108
def Expires_dbus_property(self):
1318
2109
return datetime_to_dbus(self.expires)
1319
2110
1320
2111
# LastApprovalRequest - property
1321
2112
@dbus_service_property(_interface, signature="s", access="read")
1322
2113
def LastApprovalRequest_dbus_property(self):
1323
2114
return datetime_to_dbus(self.last_approval_request)
1324
2115
1325
2116
# Timeout - property
1326
@dbus_service_property(_interface, signature="t",
2117
@dbus_service_property(_interface,
2118
signature="t",
1327
2119
access="readwrite")
1328
2120
def Timeout_dbus_property(self, value=None):
1329
2121
if value is None: # get
1330
return dbus.UInt64(self.timeout_milliseconds())
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1331
2124
self.timeout = datetime.timedelta(0, 0, 0, value)
1332
if getattr(self, "disable_initiator_tag", None) is None:
1333
return
1334
# Reschedule timeout
1335
gobject.source_remove(self.disable_initiator_tag)
1336
self.disable_initiator_tag = None
1337
self.expires = None
1338
time_to_die = timedelta_to_milliseconds((self
1339
.last_checked_ok
1340
+ self.timeout)
1341
- datetime.datetime
1342
.utcnow())
1343
if time_to_die <= 0:
1344
# The timeout has passed
1345
self.disable()
1346
else:
1347
self.expires = (datetime.datetime.utcnow()
1348
+ datetime.timedelta(milliseconds =
1349
time_to_die))
1350
self.disable_initiator_tag = (gobject.timeout_add
1351
(time_to_die, self.disable))
1352
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1353
2141
# ExtendedTimeout - property
1354
@dbus_service_property(_interface, signature="t",
2142
@dbus_service_property(_interface,
2143
signature="t",
1355
2144
access="readwrite")
1356
2145
def ExtendedTimeout_dbus_property(self, value=None):
1357
2146
if value is None: # get
1358
return dbus.UInt64(self.extended_timeout_milliseconds())
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1359
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1360
2150
1361
2151
# Interval - property
1362
@dbus_service_property(_interface, signature="t",
2152
@dbus_service_property(_interface,
2153
signature="t",
1363
2154
access="readwrite")
1364
2155
def Interval_dbus_property(self, value=None):
1365
2156
if value is None: # get
1366
return dbus.UInt64(self.interval_milliseconds())
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1367
2158
self.interval = datetime.timedelta(0, 0, 0, value)
1368
2159
if getattr(self, "checker_initiator_tag", None) is None:
1369
2160
return
1370
2161
if self.enabled:
1371
2162
# Reschedule checker run
1372
gobject.source_remove(self.checker_initiator_tag)
1373
self.checker_initiator_tag = (gobject.timeout_add
1374
(value, self.start_checker))
1375
self.start_checker() # Start one now, too
1376
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1377
2168
# Checker - property
1378
@dbus_service_property(_interface, signature="s",
2169
@dbus_service_property(_interface,
2170
signature="s",
1379
2171
access="readwrite")
1380
2172
def Checker_dbus_property(self, value=None):
1381
2173
if value is None: # get
1382
2174
return dbus.String(self.checker_command)
1383
self.checker_command = unicode(value)
1384
2175
self.checker_command = str(value)
2176
1385
2177
# CheckerRunning - property
1386
@dbus_service_property(_interface, signature="b",
2178
@dbus_service_property(_interface,
2179
signature="b",
1387
2180
access="readwrite")
1388
2181
def CheckerRunning_dbus_property(self, value=None):
1389
2182
if value is None: # get
1392
2185
self.start_checker()
1393
2186
else:
1394
2187
self.stop_checker()
1395
2188
1396
2189
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
1397
2193
@dbus_service_property(_interface, signature="o", access="read")
1398
2194
def ObjectPath_dbus_property(self):
1399
return self.dbus_object_path # is already a dbus.ObjectPath
1400
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1401
2197
# Secret = property
1402
@dbus_service_property(_interface, signature="ay",
1403
access="write", byte_arrays=True)
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1404
2205
def Secret_dbus_property(self, value):
1405
self.secret = str(value)
1406
2206
self.secret = bytes(value)
2207
1407
2208
del _interface
1408
2209
1409
2210
1410
2211
class ProxyClient(object):
1411
def __init__(self, child_pipe, fpr, address):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1412
2213
self._pipe = child_pipe
1413
self._pipe.send(('init', fpr, address))
2214
self._pipe.send(('init', key_id, fpr, address))
1414
2215
if not self._pipe.recv():
1415
raise KeyError()
1416
2216
raise KeyError(key_id or fpr)
2217
1417
2218
def __getattribute__(self, name):
1418
2219
if name == '_pipe':
1419
2220
return super(ProxyClient, self).__getattribute__(name)
1422
2223
if data[0] == 'data':
1423
2224
return data[1]
1424
2225
if data[0] == 'function':
2226
1425
2227
def func(*args, **kwargs):
1426
2228
self._pipe.send(('funcall', name, args, kwargs))
1427
2229
return self._pipe.recv()[1]
2230
1428
2231
return func
1429
2232
1430
2233
def __setattr__(self, name, value):
1431
2234
if name == '_pipe':
1432
2235
return super(ProxyClient, self).__setattr__(name, value)
1433
2236
self._pipe.send(('setattr', name, value))
1434
2237
1435
2238
1436
class ClientDBusTransitional(ClientDBus):
1437
__metaclass__ = AlternateDBusNamesMetaclass
1438
1439
1440
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1441
2240
"""A class to handle client connections.
1442
2241
1443
2242
Instantiated once for each connection to handle it.
1444
2243
Note: This will run in its own forked process."""
1445
2244
1446
2245
def handle(self):
1447
2246
with contextlib.closing(self.server.child_pipe) as child_pipe:
1448
2247
logger.info("TCP connection from: %s",
1449
unicode(self.client_address))
2248
str(self.client_address))
1450
2249
logger.debug("Pipe FD: %d",
1451
2250
self.server.child_pipe.fileno())
1452
1453
session = (gnutls.connection
1454
.ClientSession(self.request,
1455
gnutls.connection
1456
.X509Credentials()))
1457
1458
# Note: gnutls.connection.X509Credentials is really a
1459
# generic GnuTLS certificate credentials object so long as
1460
# no X.509 keys are added to it. Therefore, we can use it
1461
# here despite using OpenPGP certificates.
1462
1463
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1464
# "+AES-256-CBC", "+SHA1",
1465
# "+COMP-NULL", "+CTYPE-OPENPGP",
1466
# "+DHE-DSS"))
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1467
2258
# Use a fallback default, since this MUST be set.
1468
2259
priority = self.server.gnutls_priority
1469
2260
if priority is None:
1470
2261
priority = "NORMAL"
1471
(gnutls.library.functions
1472
.gnutls_priority_set_direct(session._c_object,
1473
priority, None))
1474
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1475
2266
# Start communication using the Mandos protocol
1476
2267
# Get protocol number
1477
2268
line = self.request.makefile().readline()
1478
2269
logger.debug("Protocol version: %r", line)
1479
2270
try:
1480
2271
if int(line.strip().split()[0]) > 1:
1481
raise RuntimeError
2272
raise RuntimeError(line)
1482
2273
except (ValueError, IndexError, RuntimeError) as error:
1483
2274
logger.error("Unknown protocol version: %s", error)
1484
2275
return
1485
2276
1486
2277
# Start GnuTLS connection
1487
2278
try:
1488
2279
session.handshake()
1489
except gnutls.errors.GNUTLSError as error:
2280
except gnutls.Error as error:
1490
2281
logger.warning("Handshake failed: %s", error)
1491
2282
# Do not run session.bye() here: the session is not
1492
2283
# established. Just abandon the request.
1493
2284
return
1494
2285
logger.debug("Handshake succeeded")
1495
2286
1496
2287
approval_required = False
1497
2288
try:
1498
try:
1499
fpr = self.fingerprint(self.peer_certificate
1500
(session))
1501
except (TypeError,
1502
gnutls.errors.GNUTLSError) as error:
1503
logger.warning("Bad certificate: %s", error)
1504
return
1505
logger.debug("Fingerprint: %s", fpr)
1506
1507
try:
1508
client = ProxyClient(child_pipe, fpr,
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1509
2311
self.client_address)
1510
2312
except KeyError:
1511
2313
return
1512
1513
if self.server.use_dbus:
1514
# Emit D-Bus signal
1515
client.NewRequest(str(self.client_address))
1516
2314
1517
2315
if client.approval_delay:
1518
2316
delay = client.approval_delay
1519
2317
client.approvals_pending += 1
1520
2318
approval_required = True
1521
2319
1522
2320
while True:
1523
2321
if not client.enabled:
1524
2322
logger.info("Client %s is disabled",
1525
client.name)
2323
client.name)
1526
2324
if self.server.use_dbus:
1527
2325
# Emit D-Bus signal
1528
2326
client.Rejected("Disabled")
1529
2327
return
1530
2328
1531
2329
if client.approved or not client.approval_delay:
1532
#We are approved or approval is disabled
2330
# We are approved or approval is disabled
1533
2331
break
1534
2332
elif client.approved is None:
1535
2333
logger.info("Client %s needs approval",
1537
2335
if self.server.use_dbus:
1538
2336
# Emit D-Bus signal
1539
2337
client.NeedApproval(
1540
client.approval_delay_milliseconds(),
1541
client.approved_by_default)
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1542
2340
else:
1543
2341
logger.warning("Client %s was not approved",
1544
2342
client.name)
1546
2344
# Emit D-Bus signal
1547
2345
client.Rejected("Denied")
1548
2346
return
1549
1550
#wait until timeout or approved
2347
2348
# wait until timeout or approved
1551
2349
time = datetime.datetime.now()
1552
2350
client.changedstate.acquire()
1553
(client.changedstate.wait
1554
(float(client.timedelta_to_milliseconds(delay)
1555
/ 1000)))
2351
client.changedstate.wait(delay.total_seconds())
1556
2352
client.changedstate.release()
1557
2353
time2 = datetime.datetime.now()
1558
2354
if (time2 - time) >= delay:
1568
2364
break
1569
2365
else:
1570
2366
delay -= time2 - time
1571
1572
sent_size = 0
1573
while sent_size < len(client.secret):
1574
try:
1575
sent = session.send(client.secret[sent_size:])
1576
except gnutls.errors.GNUTLSError as error:
1577
logger.warning("gnutls send failed")
1578
return
1579
logger.debug("Sent: %d, remaining: %d",
1580
sent, len(client.secret)
1581
- (sent_size + sent))
1582
sent_size += sent
1583
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1584
2375
logger.info("Sending secret to %s", client.name)
1585
2376
# bump the timeout using extended_timeout
1586
client.checked_ok(client.extended_timeout)
2377
client.bump_timeout(client.extended_timeout)
1587
2378
if self.server.use_dbus:
1588
2379
# Emit D-Bus signal
1589
2380
client.GotSecret()
1590
2381
1591
2382
finally:
1592
2383
if approval_required:
1593
2384
client.approvals_pending -= 1
1594
2385
try:
1595
2386
session.bye()
1596
except gnutls.errors.GNUTLSError as error:
1597
logger.warning("GnuTLS bye failed")
1598
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1599
2391
@staticmethod
1600
2392
def peer_certificate(session):
1601
"Return the peer's OpenPGP certificate as a bytestring"
1602
# If not an OpenPGP certificate...
1603
if (gnutls.library.functions
1604
.gnutls_certificate_type_get(session._c_object)
1605
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1606
# ...do the normal thing
1607
return session.peer_certificate
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1608
2409
list_size = ctypes.c_uint(1)
1609
cert_list = (gnutls.library.functions
1610
.gnutls_certificate_get_peers
2410
cert_list = (gnutls.certificate_get_peers
1611
2411
(session._c_object, ctypes.byref(list_size)))
1612
2412
if not bool(cert_list) and list_size.value != 0:
1613
raise gnutls.errors.GNUTLSError("error getting peer"
1614
" certificate")
2413
raise gnutls.Error("error getting peer certificate")
1615
2414
if list_size.value == 0:
1616
2415
return None
1617
2416
cert = cert_list[0]
1618
2417
return ctypes.string_at(cert.data, cert.size)
1619
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1620
2453
@staticmethod
1621
2454
def fingerprint(openpgp):
1622
2455
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1623
2456
# New GnuTLS "datum" with the OpenPGP public key
1624
datum = (gnutls.library.types
1625
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1626
ctypes.POINTER
1627
(ctypes.c_ubyte)),
1628
ctypes.c_uint(len(openpgp))))
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1629
2461
# New empty GnuTLS certificate
1630
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1631
(gnutls.library.functions
1632
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1633
2464
# Import the OpenPGP public key into the certificate
1634
(gnutls.library.functions
1635
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1636
gnutls.library.constants
1637
.GNUTLS_OPENPGP_FMT_RAW))
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1638
2467
# Verify the self signature in the key
1639
2468
crtverify = ctypes.c_uint()
1640
(gnutls.library.functions
1641
.gnutls_openpgp_crt_verify_self(crt, 0,
1642
ctypes.byref(crtverify)))
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1643
2471
if crtverify.value != 0:
1644
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1645
raise (gnutls.errors.CertificateSecurityError
1646
("Verify failed"))
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1647
2475
# New buffer for the fingerprint
1648
2476
buf = ctypes.create_string_buffer(20)
1649
2477
buf_len = ctypes.c_size_t()
1650
2478
# Get the fingerprint from the certificate into the buffer
1651
(gnutls.library.functions
1652
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1653
ctypes.byref(buf_len)))
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1654
2481
# Deinit the certificate
1655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2482
gnutls.openpgp_crt_deinit(crt)
1656
2483
# Convert the buffer to a Python bytestring
1657
2484
fpr = ctypes.string_at(buf, buf_len.value)
1658
2485
# Convert the bytestring to hexadecimal notation
1662
2489
1663
2490
class MultiprocessingMixIn(object):
1664
2491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
1665
2493
def sub_process_main(self, request, address):
1666
2494
try:
1667
2495
self.finish_request(request, address)
1668
except:
2496
except Exception:
1669
2497
self.handle_error(request, address)
1670
2498
self.close_request(request)
1671
2499
1672
2500
def process_request(self, request, address):
1673
2501
"""Start a new process to process the request."""
1674
proc = multiprocessing.Process(target = self.sub_process_main,
1675
args = (request,
1676
address))
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1677
2504
proc.start()
1678
2505
return proc
1679
2506
1680
2507
1681
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1682
2509
""" adds a pipe to the MixIn """
2510
1683
2511
def process_request(self, request, client_address):
1684
2512
"""Overrides and wraps the original process_request().
1685
2513
1686
2514
This function creates a new pipe in self.pipe
1687
2515
"""
1688
2516
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1689
2517
1690
2518
proc = MultiprocessingMixIn.process_request(self, request,
1691
2519
client_address)
1692
2520
self.child_pipe.close()
1693
2521
self.add_pipe(parent_pipe, proc)
1694
2522
1695
2523
def add_pipe(self, parent_pipe, proc):
1696
2524
"""Dummy function; override as necessary"""
1697
raise NotImplementedError
2525
raise NotImplementedError()
1698
2526
1699
2527
1700
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1701
2529
socketserver.TCPServer, object):
1702
2530
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1703
2531
1704
2532
Attributes:
1705
2533
enabled: Boolean; whether this server is activated yet
1706
2534
interface: None or a network interface name (string)
1707
2535
use_ipv6: Boolean; to use IPv6 or not
1708
2536
"""
2537
1709
2538
def __init__(self, server_address, RequestHandlerClass,
1710
interface=None, use_ipv6=True):
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1711
2545
self.interface = interface
1712
2546
if use_ipv6:
1713
2547
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
1714
2575
socketserver.TCPServer.__init__(self, server_address,
1715
2576
RequestHandlerClass)
2577
1716
2578
def server_bind(self):
1717
2579
"""This overrides the normal server_bind() function
1718
2580
to bind to an interface if one was specified, and also NOT to
1719
2581
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
1720
2583
if self.interface is not None:
1721
2584
if SO_BINDTODEVICE is None:
1722
logger.error("SO_BINDTODEVICE does not exist;"
1723
" cannot bind to interface %s",
1724
self.interface)
1725
else:
1726
try:
1727
self.socket.setsockopt(socket.SOL_SOCKET,
1728
SO_BINDTODEVICE,
1729
str(self.interface
1730
+ '\0'))
1731
except socket.error as error:
1732
if error[0] == errno.EPERM:
1733
logger.error("No permission to"
1734
" bind to interface %s",
1735
self.interface)
1736
elif error[0] == errno.ENOPROTOOPT:
1737
logger.error("SO_BINDTODEVICE not available;"
1738
" cannot bind to interface %s",
1739
self.interface)
1740
else:
1741
raise
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1742
2606
# Only bind(2) the socket if we really need to.
1743
2607
if self.server_address[0] or self.server_address[1]:
2608
if self.server_address[1]:
2609
self.allow_reuse_address = True
1744
2610
if not self.server_address[0]:
1745
2611
if self.address_family == socket.AF_INET6:
1746
any_address = "::" # in6addr_any
2612
any_address = "::" # in6addr_any
1747
2613
else:
1748
any_address = socket.INADDR_ANY
2614
any_address = "0.0.0.0" # INADDR_ANY
1749
2615
self.server_address = (any_address,
1750
2616
self.server_address[1])
1751
2617
elif not self.server_address[1]:
1752
self.server_address = (self.server_address[0],
1753
0)
2618
self.server_address = (self.server_address[0], 0)
1754
2619
# if self.interface:
1755
2620
# self.server_address = (self.server_address[0],
1756
2621
# 0, # port
1762
2627
1763
2628
class MandosServer(IPv6_TCPServer):
1764
2629
"""Mandos server.
1765
2630
1766
2631
Attributes:
1767
2632
clients: set of Client objects
1768
2633
gnutls_priority GnuTLS priority string
1769
2634
use_dbus: Boolean; to emit D-Bus signals or not
1770
1771
Assumes a gobject.MainLoop event loop.
2635
2636
Assumes a GLib.MainLoop event loop.
1772
2637
"""
2638
1773
2639
def __init__(self, server_address, RequestHandlerClass,
1774
interface=None, use_ipv6=True, clients=None,
1775
gnutls_priority=None, use_dbus=True):
2640
interface=None,
2641
use_ipv6=True,
2642
clients=None,
2643
gnutls_priority=None,
2644
use_dbus=True,
2645
socketfd=None):
1776
2646
self.enabled = False
1777
2647
self.clients = clients
1778
2648
if self.clients is None:
1781
2651
self.gnutls_priority = gnutls_priority
1782
2652
IPv6_TCPServer.__init__(self, server_address,
1783
2653
RequestHandlerClass,
1784
interface = interface,
1785
use_ipv6 = use_ipv6)
2654
interface=interface,
2655
use_ipv6=use_ipv6,
2656
socketfd=socketfd)
2657
1786
2658
def server_activate(self):
1787
2659
if self.enabled:
1788
2660
return socketserver.TCPServer.server_activate(self)
1789
2661
1790
2662
def enable(self):
1791
2663
self.enabled = True
1792
2664
1793
2665
def add_pipe(self, parent_pipe, proc):
1794
2666
# Call "handle_ipc" for both data and EOF events
1795
gobject.io_add_watch(parent_pipe.fileno(),
1796
gobject.IO_IN | gobject.IO_HUP,
1797
functools.partial(self.handle_ipc,
1798
parent_pipe =
1799
parent_pipe,
1800
proc = proc))
1801
1802
def handle_ipc(self, source, condition, parent_pipe=None,
1803
proc = None, client_object=None):
1804
condition_names = {
1805
gobject.IO_IN: "IN", # There is data to read.
1806
gobject.IO_OUT: "OUT", # Data can be written (without
1807
# blocking).
1808
gobject.IO_PRI: "PRI", # There is urgent data to read.
1809
gobject.IO_ERR: "ERR", # Error condition.
1810
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1811
# broken, usually for pipes and
1812
# sockets).
1813
}
1814
conditions_string = ' | '.join(name
1815
for cond, name in
1816
condition_names.iteritems()
1817
if cond & condition)
2667
GLib.io_add_watch(
2668
parent_pipe.fileno(),
2669
GLib.IO_IN | GLib.IO_HUP,
2670
functools.partial(self.handle_ipc,
2671
parent_pipe=parent_pipe,
2672
proc=proc))
2673
2674
def handle_ipc(self, source, condition,
2675
parent_pipe=None,
2676
proc=None,
2677
client_object=None):
1818
2678
# error, or the other end of multiprocessing.Pipe has closed
1819
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2679
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1820
2680
# Wait for other process to exit
1821
2681
proc.join()
1822
2682
return False
1823
2683
1824
2684
# Read a request from the child
1825
2685
request = parent_pipe.recv()
1826
2686
command = request[0]
1827
2687
1828
2688
if command == 'init':
1829
fpr = request[1]
1830
address = request[2]
1831
1832
for c in self.clients.itervalues():
1833
if c.fingerprint == fpr:
2689
key_id = request[1].decode("ascii")
2690
fpr = request[2].decode("ascii")
2691
address = request[3]
2692
2693
for c in self.clients.values():
2694
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2695
continue
2696
if key_id and c.key_id == key_id:
2697
client = c
2698
break
2699
if fpr and c.fingerprint == fpr:
1834
2700
client = c
1835
2701
break
1836
2702
else:
1837
logger.info("Client not found for fingerprint: %s, ad"
1838
"dress: %s", fpr, address)
2703
logger.info("Client not found for key ID: %s, address"
2704
": %s", key_id or fpr, address)
1839
2705
if self.use_dbus:
1840
2706
# Emit D-Bus signal
1841
mandos_dbus_service.ClientNotFound(fpr,
2707
mandos_dbus_service.ClientNotFound(key_id or fpr,
1842
2708
address[0])
1843
2709
parent_pipe.send(False)
1844
2710
return False
1845
1846
gobject.io_add_watch(parent_pipe.fileno(),
1847
gobject.IO_IN | gobject.IO_HUP,
1848
functools.partial(self.handle_ipc,
1849
parent_pipe =
1850
parent_pipe,
1851
proc = proc,
1852
client_object =
1853
client))
2711
2712
GLib.io_add_watch(
2713
parent_pipe.fileno(),
2714
GLib.IO_IN | GLib.IO_HUP,
2715
functools.partial(self.handle_ipc,
2716
parent_pipe=parent_pipe,
2717
proc=proc,
2718
client_object=client))
1854
2719
parent_pipe.send(True)
1855
2720
# remove the old hook in favor of the new above hook on
1856
2721
# same fileno
1859
2724
funcname = request[1]
1860
2725
args = request[2]
1861
2726
kwargs = request[3]
1862
2727
1863
2728
parent_pipe.send(('data', getattr(client_object,
1864
2729
funcname)(*args,
1865
**kwargs)))
1866
2730
**kwargs)))
2731
1867
2732
if command == 'getattr':
1868
2733
attrname = request[1]
1869
if callable(client_object.__getattribute__(attrname)):
1870
parent_pipe.send(('function',))
2734
if isinstance(client_object.__getattribute__(attrname),
2735
collections.Callable):
2736
parent_pipe.send(('function', ))
1871
2737
else:
1872
parent_pipe.send(('data', client_object
1873
.__getattribute__(attrname)))
1874
2738
parent_pipe.send((
2739
'data', client_object.__getattribute__(attrname)))
2740
1875
2741
if command == 'setattr':
1876
2742
attrname = request[1]
1877
2743
value = request[2]
1878
2744
setattr(client_object, attrname, value)
1879
2745
1880
2746
return True
1881
2747
1882
2748
2749
def rfc3339_duration_to_delta(duration):
2750
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2751
2752
>>> rfc3339_duration_to_delta("P7D")
2753
datetime.timedelta(7)
2754
>>> rfc3339_duration_to_delta("PT60S")
2755
datetime.timedelta(0, 60)
2756
>>> rfc3339_duration_to_delta("PT60M")
2757
datetime.timedelta(0, 3600)
2758
>>> rfc3339_duration_to_delta("PT24H")
2759
datetime.timedelta(1)
2760
>>> rfc3339_duration_to_delta("P1W")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT5M30S")
2763
datetime.timedelta(0, 330)
2764
>>> rfc3339_duration_to_delta("P1DT3M20S")
2765
datetime.timedelta(1, 200)
2766
"""
2767
2768
# Parsing an RFC 3339 duration with regular expressions is not
2769
# possible - there would have to be multiple places for the same
2770
# values, like seconds. The current code, while more esoteric, is
2771
# cleaner without depending on a parsing library. If Python had a
2772
# built-in library for parsing we would use it, but we'd like to
2773
# avoid excessive use of external libraries.
2774
2775
# New type for defining tokens, syntax, and semantics all-in-one
2776
Token = collections.namedtuple("Token", (
2777
"regexp", # To match token; if "value" is not None, must have
2778
# a "group" containing digits
2779
"value", # datetime.timedelta or None
2780
"followers")) # Tokens valid after this token
2781
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2782
# the "duration" ABNF definition in RFC 3339, Appendix A.
2783
token_end = Token(re.compile(r"$"), None, frozenset())
2784
token_second = Token(re.compile(r"(\d+)S"),
2785
datetime.timedelta(seconds=1),
2786
frozenset((token_end, )))
2787
token_minute = Token(re.compile(r"(\d+)M"),
2788
datetime.timedelta(minutes=1),
2789
frozenset((token_second, token_end)))
2790
token_hour = Token(re.compile(r"(\d+)H"),
2791
datetime.timedelta(hours=1),
2792
frozenset((token_minute, token_end)))
2793
token_time = Token(re.compile(r"T"),
2794
None,
2795
frozenset((token_hour, token_minute,
2796
token_second)))
2797
token_day = Token(re.compile(r"(\d+)D"),
2798
datetime.timedelta(days=1),
2799
frozenset((token_time, token_end)))
2800
token_month = Token(re.compile(r"(\d+)M"),
2801
datetime.timedelta(weeks=4),
2802
frozenset((token_day, token_end)))
2803
token_year = Token(re.compile(r"(\d+)Y"),
2804
datetime.timedelta(weeks=52),
2805
frozenset((token_month, token_end)))
2806
token_week = Token(re.compile(r"(\d+)W"),
2807
datetime.timedelta(weeks=1),
2808
frozenset((token_end, )))
2809
token_duration = Token(re.compile(r"P"), None,
2810
frozenset((token_year, token_month,
2811
token_day, token_time,
2812
token_week)))
2813
# Define starting values:
2814
# Value so far
2815
value = datetime.timedelta()
2816
found_token = None
2817
# Following valid tokens
2818
followers = frozenset((token_duration, ))
2819
# String left to parse
2820
s = duration
2821
# Loop until end token is found
2822
while found_token is not token_end:
2823
# Search for any currently valid tokens
2824
for token in followers:
2825
match = token.regexp.match(s)
2826
if match is not None:
2827
# Token found
2828
if token.value is not None:
2829
# Value found, parse digits
2830
factor = int(match.group(1), 10)
2831
# Add to value so far
2832
value += factor * token.value
2833
# Strip token from string
2834
s = token.regexp.sub("", s, 1)
2835
# Go to found token
2836
found_token = token
2837
# Set valid next tokens
2838
followers = found_token.followers
2839
break
2840
else:
2841
# No currently valid tokens were found
2842
raise ValueError("Invalid RFC 3339 duration: {!r}"
2843
.format(duration))
2844
# End token found
2845
return value
2846
2847
1883
2848
def string_to_delta(interval):
1884
2849
"""Parse a string and return a datetime.timedelta
1885
2850
1886
2851
>>> string_to_delta('7d')
1887
2852
datetime.timedelta(7)
1888
2853
>>> string_to_delta('60s')
1896
2861
>>> string_to_delta('5m 30s')
1897
2862
datetime.timedelta(0, 330)
1898
2863
"""
2864
2865
try:
2866
return rfc3339_duration_to_delta(interval)
2867
except ValueError:
2868
pass
2869
1899
2870
timevalue = datetime.timedelta(0)
1900
2871
for s in interval.split():
1901
2872
try:
1902
suffix = unicode(s[-1])
2873
suffix = s[-1]
1903
2874
value = int(s[:-1])
1904
2875
if suffix == "d":
1905
2876
delta = datetime.timedelta(value)
1912
2883
elif suffix == "w":
1913
2884
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1914
2885
else:
1915
raise ValueError("Unknown suffix %r" % suffix)
1916
except (ValueError, IndexError) as e:
2886
raise ValueError("Unknown suffix {!r}".format(suffix))
2887
except IndexError as e:
1917
2888
raise ValueError(*(e.args))
1918
2889
timevalue += delta
1919
2890
return timevalue
1920
2891
1921
2892
1922
def daemon(nochdir = False, noclose = False):
2893
def daemon(nochdir=False, noclose=False):
1923
2894
"""See daemon(3). Standard BSD Unix function.
1924
2895
1925
2896
This should really exist as os.daemon, but it doesn't (yet)."""
1926
2897
if os.fork():
1927
2898
sys.exit()
1932
2903
sys.exit()
1933
2904
if not noclose:
1934
2905
# Close all standard open file descriptors
1935
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2906
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1936
2907
if not stat.S_ISCHR(os.fstat(null).st_mode):
1937
2908
raise OSError(errno.ENODEV,
1938
"%s not a character device"
1939
% os.path.devnull)
2909
"{} not a character device"
2910
.format(os.devnull))
1940
2911
os.dup2(null, sys.stdin.fileno())
1941
2912
os.dup2(null, sys.stdout.fileno())
1942
2913
os.dup2(null, sys.stderr.fileno())
1945
2916
1946
2917
1947
2918
def main():
1948
2919
1949
2920
##################################################################
1950
2921
# Parsing of options, both command line and config file
1951
2922
1952
2923
parser = argparse.ArgumentParser()
1953
2924
parser.add_argument("-v", "--version", action="version",
1954
version = "%%(prog)s %s" % version,
2925
version="%(prog)s {}".format(version),
1955
2926
help="show version number and exit")
1956
2927
parser.add_argument("-i", "--interface", metavar="IF",
1957
2928
help="Bind to interface IF")
1963
2934
help="Run self-test")
1964
2935
parser.add_argument("--debug", action="store_true",
1965
2936
help="Debug mode; run in foreground and log"
1966
" to terminal")
2937
" to terminal", default=None)
1967
2938
parser.add_argument("--debuglevel", metavar="LEVEL",
1968
2939
help="Debug level for stdout output")
1969
2940
parser.add_argument("--priority", help="GnuTLS"
1976
2947
" files")
1977
2948
parser.add_argument("--no-dbus", action="store_false",
1978
2949
dest="use_dbus", help="Do not provide D-Bus"
1979
" system bus interface")
2950
" system bus interface", default=None)
1980
2951
parser.add_argument("--no-ipv6", action="store_false",
1981
dest="use_ipv6", help="Do not use IPv6")
2952
dest="use_ipv6", help="Do not use IPv6",
2953
default=None)
1982
2954
parser.add_argument("--no-restore", action="store_false",
1983
2955
dest="restore", help="Do not restore stored"
1984
" state")
2956
" state", default=None)
2957
parser.add_argument("--socket", type=int,
2958
help="Specify a file descriptor to a network"
2959
" socket to use instead of creating one")
1985
2960
parser.add_argument("--statedir", metavar="DIR",
1986
2961
help="Directory to save/restore state in")
1987
2962
parser.add_argument("--foreground", action="store_true",
2963
help="Run in foreground", default=None)
2964
parser.add_argument("--no-zeroconf", action="store_false",
2965
dest="zeroconf", help="Do not use Zeroconf",
2966
default=None)
2967
1988
2968
options = parser.parse_args()
1989
2969
1990
2970
if options.check:
1991
2971
import doctest
1992
doctest.testmod()
1993
sys.exit()
1994
2972
fail_count, test_count = doctest.testmod()
2973
sys.exit(os.EX_OK if fail_count == 0 else 1)
2974
1995
2975
# Default values for config file for server-global settings
1996
server_defaults = { "interface": "",
1997
"address": "",
1998
"port": "",
1999
"debug": "False",
2000
"priority":
2001
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2002
"servicename": "Mandos",
2003
"use_dbus": "True",
2004
"use_ipv6": "True",
2005
"debuglevel": "",
2006
"restore": "True",
2007
"statedir": "/var/lib/mandos"
2008
}
2009
2976
if gnutls.has_rawpk:
2977
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2978
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2979
else:
2980
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2981
":+SIGN-DSA-SHA256")
2982
server_defaults = {"interface": "",
2983
"address": "",
2984
"port": "",
2985
"debug": "False",
2986
"priority": priority,
2987
"servicename": "Mandos",
2988
"use_dbus": "True",
2989
"use_ipv6": "True",
2990
"debuglevel": "",
2991
"restore": "True",
2992
"socket": "",
2993
"statedir": "/var/lib/mandos",
2994
"foreground": "False",
2995
"zeroconf": "True",
2996
}
2997
del priority
2998
2010
2999
# Parse config file for server-global settings
2011
3000
server_config = configparser.SafeConfigParser(server_defaults)
2012
3001
del server_defaults
2013
server_config.read(os.path.join(options.configdir,
2014
"mandos.conf"))
3002
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2015
3003
# Convert the SafeConfigParser object to a dict
2016
3004
server_settings = server_config.defaults()
2017
3005
# Use the appropriate methods on the non-string config options
2018
for option in ("debug", "use_dbus", "use_ipv6"):
3006
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3007
"foreground", "zeroconf"):
2019
3008
server_settings[option] = server_config.getboolean("DEFAULT",
2020
3009
option)
2021
3010
if server_settings["port"]:
2022
3011
server_settings["port"] = server_config.getint("DEFAULT",
2023
3012
"port")
3013
if server_settings["socket"]:
3014
server_settings["socket"] = server_config.getint("DEFAULT",
3015
"socket")
3016
# Later, stdin will, and stdout and stderr might, be dup'ed
3017
# over with an opened os.devnull. But we don't want this to
3018
# happen with a supplied network socket.
3019
if 0 <= server_settings["socket"] <= 2:
3020
server_settings["socket"] = os.dup(server_settings
3021
["socket"])
2024
3022
del server_config
2025
3023
2026
3024
# Override the settings from the config file with command line
2027
3025
# options, if set.
2028
3026
for option in ("interface", "address", "port", "debug",
2029
"priority", "servicename", "configdir",
2030
"use_dbus", "use_ipv6", "debuglevel", "restore",
2031
"statedir"):
3027
"priority", "servicename", "configdir", "use_dbus",
3028
"use_ipv6", "debuglevel", "restore", "statedir",
3029
"socket", "foreground", "zeroconf"):
2032
3030
value = getattr(options, option)
2033
3031
if value is not None:
2034
3032
server_settings[option] = value
2035
3033
del options
2036
3034
# Force all strings to be unicode
2037
3035
for option in server_settings.keys():
2038
if type(server_settings[option]) is str:
2039
server_settings[option] = unicode(server_settings[option])
3036
if isinstance(server_settings[option], bytes):
3037
server_settings[option] = (server_settings[option]
3038
.decode("utf-8"))
3039
# Force all boolean options to be boolean
3040
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3041
"foreground", "zeroconf"):
3042
server_settings[option] = bool(server_settings[option])
3043
# Debug implies foreground
3044
if server_settings["debug"]:
3045
server_settings["foreground"] = True
2040
3046
# Now we have our good server settings in "server_settings"
2041
3047
2042
3048
##################################################################
2043
3049
3050
if (not server_settings["zeroconf"]
3051
and not (server_settings["port"]
3052
or server_settings["socket"] != "")):
3053
parser.error("Needs port or socket to work without Zeroconf")
3054
2044
3055
# For convenience
2045
3056
debug = server_settings["debug"]
2046
3057
debuglevel = server_settings["debuglevel"]
2048
3059
use_ipv6 = server_settings["use_ipv6"]
2049
3060
stored_state_path = os.path.join(server_settings["statedir"],
2050
3061
stored_state_file)
2051
3062
foreground = server_settings["foreground"]
3063
zeroconf = server_settings["zeroconf"]
3064
2052
3065
if debug:
2053
initlogger(logging.DEBUG)
3066
initlogger(debug, logging.DEBUG)
2054
3067
else:
2055
3068
if not debuglevel:
2056
initlogger()
3069
initlogger(debug)
2057
3070
else:
2058
3071
level = getattr(logging, debuglevel.upper())
2059
initlogger(level)
2060
3072
initlogger(debug, level)
3073
2061
3074
if server_settings["servicename"] != "Mandos":
2062
syslogger.setFormatter(logging.Formatter
2063
('Mandos (%s) [%%(process)d]:'
2064
' %%(levelname)s: %%(message)s'
2065
% server_settings["servicename"]))
2066
3075
syslogger.setFormatter(
3076
logging.Formatter('Mandos ({}) [%(process)d]:'
3077
' %(levelname)s: %(message)s'.format(
3078
server_settings["servicename"])))
3079
2067
3080
# Parse config file with clients
2068
client_defaults = { "timeout": "5m",
2069
"extended_timeout": "15m",
2070
"interval": "2m",
2071
"checker": "fping -q -- %%(host)s",
2072
"host": "",
2073
"approval_delay": "0s",
2074
"approval_duration": "1s",
2075
}
2076
client_config = configparser.SafeConfigParser(client_defaults)
3081
client_config = configparser.SafeConfigParser(Client
3082
.client_defaults)
2077
3083
client_config.read(os.path.join(server_settings["configdir"],
2078
3084
"clients.conf"))
2079
3085
2080
3086
global mandos_dbus_service
2081
3087
mandos_dbus_service = None
2082
2083
tcp_server = MandosServer((server_settings["address"],
2084
server_settings["port"]),
2085
ClientHandler,
2086
interface=(server_settings["interface"]
2087
or None),
2088
use_ipv6=use_ipv6,
2089
gnutls_priority=
2090
server_settings["priority"],
2091
use_dbus=use_dbus)
2092
if not debug:
2093
pidfilename = "/var/run/mandos.pid"
2094
try:
2095
pidfile = open(pidfilename, "w")
2096
except IOError:
2097
logger.error("Could not open file %r", pidfilename)
2098
2099
try:
2100
uid = pwd.getpwnam("_mandos").pw_uid
2101
gid = pwd.getpwnam("_mandos").pw_gid
2102
except KeyError:
2103
try:
2104
uid = pwd.getpwnam("mandos").pw_uid
2105
gid = pwd.getpwnam("mandos").pw_gid
3088
3089
socketfd = None
3090
if server_settings["socket"] != "":
3091
socketfd = server_settings["socket"]
3092
tcp_server = MandosServer(
3093
(server_settings["address"], server_settings["port"]),
3094
ClientHandler,
3095
interface=(server_settings["interface"] or None),
3096
use_ipv6=use_ipv6,
3097
gnutls_priority=server_settings["priority"],
3098
use_dbus=use_dbus,
3099
socketfd=socketfd)
3100
if not foreground:
3101
pidfilename = "/run/mandos.pid"
3102
if not os.path.isdir("/run/."):
3103
pidfilename = "/var/run/mandos.pid"
3104
pidfile = None
3105
try:
3106
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3107
except IOError as e:
3108
logger.error("Could not open file %r", pidfilename,
3109
exc_info=e)
3110
3111
for name, group in (("_mandos", "_mandos"),
3112
("mandos", "mandos"),
3113
("nobody", "nogroup")):
3114
try:
3115
uid = pwd.getpwnam(name).pw_uid
3116
gid = pwd.getpwnam(group).pw_gid
3117
break
2106
3118
except KeyError:
2107
try:
2108
uid = pwd.getpwnam("nobody").pw_uid
2109
gid = pwd.getpwnam("nobody").pw_gid
2110
except KeyError:
2111
uid = 65534
2112
gid = 65534
3119
continue
3120
else:
3121
uid = 65534
3122
gid = 65534
2113
3123
try:
2114
3124
os.setgid(gid)
2115
3125
os.setuid(uid)
3126
if debug:
3127
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3128
gid))
2116
3129
except OSError as error:
2117
if error[0] != errno.EPERM:
2118
raise error
2119
3130
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3131
.format(uid, gid, os.strerror(error.errno)))
3132
if error.errno != errno.EPERM:
3133
raise
3134
2120
3135
if debug:
2121
3136
# Enable all possible GnuTLS debugging
2122
3137
2123
3138
# "Use a log level over 10 to enable all debugging options."
2124
3139
# - GnuTLS manual
2125
gnutls.library.functions.gnutls_global_set_log_level(11)
2126
2127
@gnutls.library.types.gnutls_log_func
3140
gnutls.global_set_log_level(11)
3141
3142
@gnutls.log_func
2128
3143
def debug_gnutls(level, string):
2129
3144
logger.debug("GnuTLS: %s", string[:-1])
2130
2131
(gnutls.library.functions
2132
.gnutls_global_set_log_function(debug_gnutls))
2133
3145
3146
gnutls.global_set_log_function(debug_gnutls)
3147
2134
3148
# Redirect stdin so all checkers get /dev/null
2135
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2136
3150
os.dup2(null, sys.stdin.fileno())
2137
3151
if null > 2:
2138
3152
os.close(null)
2139
else:
2140
# No console logging
2141
logger.removeHandler(console)
2142
3153
2143
3154
# Need to fork before connecting to D-Bus
2144
if not debug:
3155
if not foreground:
2145
3156
# Close all input and output, do double fork, etc.
2146
3157
daemon()
2147
3158
3159
# multiprocessing will use threads, so before we use GLib we need
3160
# to inform GLib that threads will be used.
3161
GLib.threads_init()
3162
2148
3163
global main_loop
2149
3164
# From the Avahi example code
2150
DBusGMainLoop(set_as_default=True )
2151
main_loop = gobject.MainLoop()
3165
DBusGMainLoop(set_as_default=True)
3166
main_loop = GLib.MainLoop()
2152
3167
bus = dbus.SystemBus()
2153
3168
# End of Avahi example code
2154
3169
if use_dbus:
2155
3170
try:
2156
3171
bus_name = dbus.service.BusName("se.recompile.Mandos",
2157
bus, do_not_queue=True)
2158
old_bus_name = (dbus.service.BusName
2159
("se.bsnet.fukt.Mandos", bus,
2160
do_not_queue=True))
2161
except dbus.exceptions.NameExistsException as e:
2162
logger.error(unicode(e) + ", disabling D-Bus")
3172
bus,
3173
do_not_queue=True)
3174
old_bus_name = dbus.service.BusName(
3175
"se.bsnet.fukt.Mandos", bus,
3176
do_not_queue=True)
3177
except dbus.exceptions.DBusException as e:
3178
logger.error("Disabling D-Bus:", exc_info=e)
2163
3179
use_dbus = False
2164
3180
server_settings["use_dbus"] = False
2165
3181
tcp_server.use_dbus = False
2166
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2167
service = AvahiServiceToSyslog(name =
2168
server_settings["servicename"],
2169
servicetype = "_mandos._tcp",
2170
protocol = protocol, bus = bus)
2171
if server_settings["interface"]:
2172
service.interface = (if_nametoindex
2173
(str(server_settings["interface"])))
2174
3182
if zeroconf:
3183
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3184
service = AvahiServiceToSyslog(
3185
name=server_settings["servicename"],
3186
servicetype="_mandos._tcp",
3187
protocol=protocol,
3188
bus=bus)
3189
if server_settings["interface"]:
3190
service.interface = if_nametoindex(
3191
server_settings["interface"].encode("utf-8"))
3192
2175
3193
global multiprocessing_manager
2176
3194
multiprocessing_manager = multiprocessing.Manager()
2177
3195
2178
3196
client_class = Client
2179
3197
if use_dbus:
2180
client_class = functools.partial(ClientDBusTransitional,
2181
bus = bus)
2182
2183
special_settings = {
2184
# Some settings need to be accessd by special methods;
2185
# booleans need .getboolean(), etc. Here is a list of them:
2186
"approved_by_default":
2187
lambda section:
2188
client_config.getboolean(section, "approved_by_default"),
2189
"enabled":
2190
lambda section:
2191
client_config.getboolean(section, "enabled"),
2192
}
2193
# Construct a new dict of client settings of this form:
2194
# { client_name: {setting_name: value, ...}, ...}
2195
# with exceptions for any special settings as defined above
2196
client_settings = dict((clientname,
2197
dict((setting,
2198
(value
2199
if setting not in special_settings
2200
else special_settings[setting]
2201
(clientname)))
2202
for setting, value in
2203
client_config.items(clientname)))
2204
for clientname in client_config.sections())
2205
3198
client_class = functools.partial(ClientDBus, bus=bus)
3199
3200
client_settings = Client.config_parser(client_config)
2206
3201
old_client_settings = {}
2207
clients_data = []
2208
3202
clients_data = {}
3203
3204
# This is used to redirect stdout and stderr for checker processes
3205
global wnull
3206
wnull = open(os.devnull, "w") # A writable /dev/null
3207
# Only used if server is running in foreground but not in debug
3208
# mode
3209
if debug or not foreground:
3210
wnull.close()
3211
2209
3212
# Get client data and settings from last running state.
2210
3213
if server_settings["restore"]:
2211
3214
try:
2212
3215
with open(stored_state_path, "rb") as stored_state:
2213
clients_data, old_client_settings = (pickle.load
2214
(stored_state))
3216
if sys.version_info.major == 2:
3217
clients_data, old_client_settings = pickle.load(
3218
stored_state)
3219
else:
3220
bytes_clients_data, bytes_old_client_settings = (
3221
pickle.load(stored_state, encoding="bytes"))
3222
# Fix bytes to strings
3223
# clients_data
3224
# .keys()
3225
clients_data = {(key.decode("utf-8")
3226
if isinstance(key, bytes)
3227
else key): value
3228
for key, value in
3229
bytes_clients_data.items()}
3230
del bytes_clients_data
3231
for key in clients_data:
3232
value = {(k.decode("utf-8")
3233
if isinstance(k, bytes) else k): v
3234
for k, v in
3235
clients_data[key].items()}
3236
clients_data[key] = value
3237
# .client_structure
3238
value["client_structure"] = [
3239
(s.decode("utf-8")
3240
if isinstance(s, bytes)
3241
else s) for s in
3242
value["client_structure"]]
3243
# .name & .host
3244
for k in ("name", "host"):
3245
if isinstance(value[k], bytes):
3246
value[k] = value[k].decode("utf-8")
3247
if not value.has_key("key_id"):
3248
value["key_id"] = ""
3249
elif not value.has_key("fingerprint"):
3250
value["fingerprint"] = ""
3251
# old_client_settings
3252
# .keys()
3253
old_client_settings = {
3254
(key.decode("utf-8")
3255
if isinstance(key, bytes)
3256
else key): value
3257
for key, value in
3258
bytes_old_client_settings.items()}
3259
del bytes_old_client_settings
3260
# .host
3261
for value in old_client_settings.values():
3262
if isinstance(value["host"], bytes):
3263
value["host"] = (value["host"]
3264
.decode("utf-8"))
2215
3265
os.remove(stored_state_path)
2216
3266
except IOError as e:
2217
logger.warning("Could not load persistent state: {0}"
2218
.format(e))
2219
if e.errno != errno.ENOENT:
3267
if e.errno == errno.ENOENT:
3268
logger.warning("Could not load persistent state:"
3269
" {}".format(os.strerror(e.errno)))
3270
else:
3271
logger.critical("Could not load persistent state:",
3272
exc_info=e)
2220
3273
raise
2221
3274
except EOFError as e:
3275
logger.warning("Could not load persistent state: "
3276
"EOFError:",
3277
exc_info=e)
3278
2222
3279
with PGPEngine() as pgp:
2223
for client in clients_data:
2224
client_name = client["name"]
2225
3280
for client_name, client in clients_data.items():
3281
# Skip removed clients
3282
if client_name not in client_settings:
3283
continue
3284
2226
3285
# Decide which value to use after restoring saved state.
2227
3286
# We have three different values: Old config file,
2228
3287
# new config file, and saved state.
2233
3292
# For each value in new config, check if it
2234
3293
# differs from the old config value (Except for
2235
3294
# the "secret" attribute)
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
3295
if (name != "secret"
3296
and (value !=
3297
old_client_settings[client_name][name])):
2239
3298
client[name] = value
2240
3299
except KeyError:
2241
3300
pass
2242
3301
2243
3302
# Clients who has passed its expire date can still be
2244
# enabled if its last checker was sucessful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
3303
# enabled if its last checker was successful. A Client
3304
# whose checker succeeded before we stored its state is
3305
# assumed to have successfully run all checkers during
3306
# downtime.
2247
3307
if client["enabled"]:
2248
if client["expires"] <= (datetime.datetime
2249
.utcnow()):
2250
# Client has expired
2251
if client["last_checker_status"] != 0:
3308
if datetime.datetime.utcnow() >= client["expires"]:
3309
if not client["last_checked_ok"]:
3310
logger.warning(
3311
"disabling client {} - Client never "
3312
"performed a successful checker".format(
3313
client_name))
3314
client["enabled"] = False
3315
elif client["last_checker_status"] != 0:
3316
logger.warning(
3317
"disabling client {} - Client last"
3318
" checker failed with error code"
3319
" {}".format(
3320
client_name,
3321
client["last_checker_status"]))
2252
3322
client["enabled"] = False
2253
3323
else:
2254
client["expires"] = (datetime.datetime
2255
.utcnow()
2256
+ client["timeout"])
2257
2258
client["changedstate"] = (multiprocessing_manager
2259
.Condition
2260
(multiprocessing_manager
2261
.Lock()))
2262
if use_dbus:
2263
new_client = (ClientDBusTransitional.__new__
2264
(ClientDBusTransitional))
2265
tcp_server.clients[client_name] = new_client
2266
new_client.bus = bus
2267
for name, value in client.iteritems():
2268
setattr(new_client, name, value)
2269
client_object_name = unicode(client_name).translate(
2270
{ord("."): ord("_"),
2271
ord("-"): ord("_")})
2272
new_client.dbus_object_path = (dbus.ObjectPath
2273
("/clients/"
2274
+ client_object_name))
2275
DBusObjectWithProperties.__init__(new_client,
2276
new_client.bus,
2277
new_client
2278
.dbus_object_path)
2279
else:
2280
tcp_server.clients[client_name] = (Client.__new__
2281
(Client))
2282
for name, value in client.iteritems():
2283
setattr(tcp_server.clients[client_name],
2284
name, value)
2285
3324
client["expires"] = (
3325
datetime.datetime.utcnow()
3326
+ client["timeout"])
3327
logger.debug("Last checker succeeded,"
3328
" keeping {} enabled".format(
3329
client_name))
2286
3330
try:
2287
tcp_server.clients[client_name].secret = (
2288
pgp.decrypt(tcp_server.clients[client_name]
2289
.encrypted_secret,
2290
client_settings[client_name]
2291
["secret"]))
3331
client["secret"] = pgp.decrypt(
3332
client["encrypted_secret"],
3333
client_settings[client_name]["secret"])
2292
3334
except PGPError:
2293
3335
# If decryption fails, we use secret from new settings
2294
logger.debug("Failed to decrypt {0} old secret"
2295
.format(client_name))
2296
tcp_server.clients[client_name].secret = (
2297
client_settings[client_name]["secret"])
2298
2299
# Create/remove clients based on new changes made to config
2300
for clientname in set(old_client_settings) - set(client_settings):
2301
del tcp_server.clients[clientname]
2302
for clientname in set(client_settings) - set(old_client_settings):
2303
tcp_server.clients[clientname] = (client_class(name
2304
= clientname,
2305
config =
2306
client_settings
2307
[clientname]))
2308
3336
logger.debug("Failed to decrypt {} old secret".format(
3337
client_name))
3338
client["secret"] = (client_settings[client_name]
3339
["secret"])
3340
3341
# Add/remove clients based on new changes made to config
3342
for client_name in (set(old_client_settings)
3343
- set(client_settings)):
3344
del clients_data[client_name]
3345
for client_name in (set(client_settings)
3346
- set(old_client_settings)):
3347
clients_data[client_name] = client_settings[client_name]
3348
3349
# Create all client objects
3350
for client_name, client in clients_data.items():
3351
tcp_server.clients[client_name] = client_class(
3352
name=client_name,
3353
settings=client,
3354
server_settings=server_settings)
3355
2309
3356
if not tcp_server.clients:
2310
3357
logger.warning("No clients defined")
2311
2312
if not debug:
2313
try:
2314
with pidfile:
2315
pid = os.getpid()
2316
pidfile.write(str(pid) + "\n".encode("utf-8"))
2317
del pidfile
2318
except IOError:
2319
logger.error("Could not write to file %r with PID %d",
2320
pidfilename, pid)
2321
except NameError:
2322
# "pidfile" was never created
2323
pass
3358
3359
if not foreground:
3360
if pidfile is not None:
3361
pid = os.getpid()
3362
try:
3363
with pidfile:
3364
print(pid, file=pidfile)
3365
except IOError:
3366
logger.error("Could not write to file %r with PID %d",
3367
pidfilename, pid)
3368
del pidfile
2324
3369
del pidfilename
2325
2326
signal.signal(signal.SIGINT, signal.SIG_IGN)
2327
2328
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2329
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2330
3370
3371
for termsig in (signal.SIGHUP, signal.SIGTERM):
3372
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3373
lambda: main_loop.quit() and False)
3374
2331
3375
if use_dbus:
2332
class MandosDBusService(dbus.service.Object):
3376
3377
@alternate_dbus_interfaces(
3378
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3379
class MandosDBusService(DBusObjectWithObjectManager):
2333
3380
"""A D-Bus proxy object"""
3381
2334
3382
def __init__(self):
2335
3383
dbus.service.Object.__init__(self, bus, "/")
3384
2336
3385
_interface = "se.recompile.Mandos"
2337
3386
2338
3387
@dbus.service.signal(_interface, signature="o")
2339
3388
def ClientAdded(self, objpath):
2340
3389
"D-Bus signal"
2341
3390
pass
2342
3391
2343
3392
@dbus.service.signal(_interface, signature="ss")
2344
def ClientNotFound(self, fingerprint, address):
3393
def ClientNotFound(self, key_id, address):
2345
3394
"D-Bus signal"
2346
3395
pass
2347
3396
3397
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3398
"true"})
2348
3399
@dbus.service.signal(_interface, signature="os")
2349
3400
def ClientRemoved(self, objpath, name):
2350
3401
"D-Bus signal"
2351
3402
pass
2352
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
2353
3406
@dbus.service.method(_interface, out_signature="ao")
2354
3407
def GetAllClients(self):
2355
3408
"D-Bus method"
2356
return dbus.Array(c.dbus_object_path
2357
for c in
2358
tcp_server.clients.itervalues())
2359
3409
return dbus.Array(c.dbus_object_path for c in
3410
tcp_server.clients.values())
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2360
3414
@dbus.service.method(_interface,
2361
3415
out_signature="a{oa{sv}}")
2362
3416
def GetAllClientsWithProperties(self):
2363
3417
"D-Bus method"
2364
3418
return dbus.Dictionary(
2365
((c.dbus_object_path, c.GetAll(""))
2366
for c in tcp_server.clients.itervalues()),
3419
{c.dbus_object_path: c.GetAll(
3420
"se.recompile.Mandos.Client")
3421
for c in tcp_server.clients.values()},
2367
3422
signature="oa{sv}")
2368
3423
2369
3424
@dbus.service.method(_interface, in_signature="o")
2370
3425
def RemoveClient(self, object_path):
2371
3426
"D-Bus method"
2372
for c in tcp_server.clients.itervalues():
3427
for c in tcp_server.clients.values():
2373
3428
if c.dbus_object_path == object_path:
2374
3429
del tcp_server.clients[c.name]
2375
3430
c.remove_from_connection()
2376
# Don't signal anything except ClientRemoved
3431
# Don't signal the disabling
2377
3432
c.disable(quiet=True)
2378
# Emit D-Bus signal
2379
self.ClientRemoved(object_path, c.name)
3433
# Emit D-Bus signal for removal
3434
self.client_removed_signal(c)
2380
3435
return
2381
3436
raise KeyError(object_path)
2382
3437
2383
3438
del _interface
2384
2385
class MandosDBusServiceTransitional(MandosDBusService):
2386
__metaclass__ = AlternateDBusNamesMetaclass
2387
mandos_dbus_service = MandosDBusServiceTransitional()
2388
3439
3440
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3441
out_signature="a{oa{sa{sv}}}")
3442
def GetManagedObjects(self):
3443
"""D-Bus method"""
3444
return dbus.Dictionary(
3445
{client.dbus_object_path:
3446
dbus.Dictionary(
3447
{interface: client.GetAll(interface)
3448
for interface in
3449
client._get_all_interface_names()})
3450
for client in tcp_server.clients.values()})
3451
3452
def client_added_signal(self, client):
3453
"""Send the new standard signal and the old signal"""
3454
if use_dbus:
3455
# New standard signal
3456
self.InterfacesAdded(
3457
client.dbus_object_path,
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()}))
3462
# Old signal
3463
self.ClientAdded(client.dbus_object_path)
3464
3465
def client_removed_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesRemoved(
3470
client.dbus_object_path,
3471
client._get_all_interface_names())
3472
# Old signal
3473
self.ClientRemoved(client.dbus_object_path,
3474
client.name)
3475
3476
mandos_dbus_service = MandosDBusService()
3477
3478
# Save modules to variables to exempt the modules from being
3479
# unloaded before the function registered with atexit() is run.
3480
mp = multiprocessing
3481
wn = wnull
3482
2389
3483
def cleanup():
2390
3484
"Cleanup function; run on exit"
2391
service.cleanup()
2392
2393
multiprocessing.active_children()
3485
if zeroconf:
3486
service.cleanup()
3487
3488
mp.active_children()
3489
wn.close()
2394
3490
if not (tcp_server.clients or client_settings):
2395
3491
return
2396
3492
2397
3493
# Store client before exiting. Secrets are encrypted with key
2398
3494
# based on what config file has. If config file is
2399
3495
# removed/edited, old secret will thus be unrecovable.
2400
clients = []
3496
clients = {}
2401
3497
with PGPEngine() as pgp:
2402
for client in tcp_server.clients.itervalues():
3498
for client in tcp_server.clients.values():
2403
3499
key = client_settings[client.name]["secret"]
2404
3500
client.encrypted_secret = pgp.encrypt(client.secret,
2405
3501
key)
2406
3502
client_dict = {}
2407
2408
# A list of attributes that will not be stored when
2409
# shutting down.
2410
exclude = set(("bus", "changedstate", "secret"))
2411
for name, typ in (inspect.getmembers
2412
(dbus.service.Object)):
3503
3504
# A list of attributes that can not be pickled
3505
# + secret.
3506
exclude = {"bus", "changedstate", "secret",
3507
"checker", "server_settings"}
3508
for name, typ in inspect.getmembers(dbus.service
3509
.Object):
2413
3510
exclude.add(name)
2414
3511
2415
3512
client_dict["encrypted_secret"] = (client
2416
3513
.encrypted_secret)
2417
3514
for attr in client.client_structure:
2418
3515
if attr not in exclude:
2419
3516
client_dict[attr] = getattr(client, attr)
2420
2421
clients.append(client_dict)
3517
3518
clients[client.name] = client_dict
2422
3519
del client_settings[client.name]["secret"]
2423
3520
2424
3521
try:
2425
with os.fdopen(os.open(stored_state_path,
2426
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2427
0600), "wb") as stored_state:
2428
pickle.dump((clients, client_settings), stored_state)
3522
with tempfile.NamedTemporaryFile(
3523
mode='wb',
3524
suffix=".pickle",
3525
prefix='clients-',
3526
dir=os.path.dirname(stored_state_path),
3527
delete=False) as stored_state:
3528
pickle.dump((clients, client_settings), stored_state,
3529
protocol=2)
3530
tempname = stored_state.name
3531
os.rename(tempname, stored_state_path)
2429
3532
except (IOError, OSError) as e:
2430
logger.warning("Could not save persistent state: {0}"
2431
.format(e))
2432
if e.errno not in (errno.ENOENT, errno.EACCES):
3533
if not debug:
3534
try:
3535
os.remove(tempname)
3536
except NameError:
3537
pass
3538
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3539
logger.warning("Could not save persistent state: {}"
3540
.format(os.strerror(e.errno)))
3541
else:
3542
logger.warning("Could not save persistent state:",
3543
exc_info=e)
2433
3544
raise
2434
3545
2435
3546
# Delete all clients, and settings from config
2436
3547
while tcp_server.clients:
2437
3548
name, client = tcp_server.clients.popitem()
2438
3549
if use_dbus:
2439
3550
client.remove_from_connection()
2440
# Don't signal anything except ClientRemoved
3551
# Don't signal the disabling
2441
3552
client.disable(quiet=True)
3553
# Emit D-Bus signal for removal
2442
3554
if use_dbus:
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientRemoved(client
2445
.dbus_object_path,
2446
client.name)
3555
mandos_dbus_service.client_removed_signal(client)
2447
3556
client_settings.clear()
2448
3557
2449
3558
atexit.register(cleanup)
2450
2451
for client in tcp_server.clients.itervalues():
3559
3560
for client in tcp_server.clients.values():
2452
3561
if use_dbus:
2453
# Emit D-Bus signal
2454
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
# Emit D-Bus signal for adding
3563
mandos_dbus_service.client_added_signal(client)
2455
3564
# Need to initiate checking of clients
2456
3565
if client.enabled:
2457
3566
client.init_checker()
2458
3567
2459
3568
tcp_server.enable()
2460
3569
tcp_server.server_activate()
2461
3570
2462
3571
# Find out what port we got
2463
service.port = tcp_server.socket.getsockname()[1]
3572
if zeroconf:
3573
service.port = tcp_server.socket.getsockname()[1]
2464
3574
if use_ipv6:
2465
3575
logger.info("Now listening on address %r, port %d,"
2466
" flowinfo %d, scope_id %d"
2467
% tcp_server.socket.getsockname())
3576
" flowinfo %d, scope_id %d",
3577
*tcp_server.socket.getsockname())
2468
3578
else: # IPv4
2469
logger.info("Now listening on address %r, port %d"
2470
% tcp_server.socket.getsockname())
2471
2472
#service.interface = tcp_server.socket.getsockname()[3]
2473
3579
logger.info("Now listening on address %r, port %d",
3580
*tcp_server.socket.getsockname())
3581
3582
# service.interface = tcp_server.socket.getsockname()[3]
3583
2474
3584
try:
2475
# From the Avahi example code
2476
try:
2477
service.activate()
2478
except dbus.exceptions.DBusException as error:
2479
logger.critical("DBusException: %s", error)
2480
cleanup()
2481
sys.exit(1)
2482
# End of Avahi example code
2483
2484
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2485
lambda *args, **kwargs:
2486
(tcp_server.handle_request
2487
(*args[2:], **kwargs) or True))
2488
3585
if zeroconf:
3586
# From the Avahi example code
3587
try:
3588
service.activate()
3589
except dbus.exceptions.DBusException as error:
3590
logger.critical("D-Bus Exception", exc_info=error)
3591
cleanup()
3592
sys.exit(1)
3593
# End of Avahi example code
3594
3595
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3596
lambda *args, **kwargs:
3597
(tcp_server.handle_request
3598
(*args[2:], **kwargs) or True))
3599
2489
3600
logger.debug("Starting main loop")
2490
3601
main_loop.run()
2491
3602
except AvahiError as error:
2492
logger.critical("AvahiError: %s", error)
3603
logger.critical("Avahi Error", exc_info=error)
2493
3604
cleanup()
2494
3605
sys.exit(1)
2495
3606
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0