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- Committer: teddy at recompile
- Date: 2020-07-04 08:59:37 UTC
- Revision ID: teddy@recompile.se-20200704085937-r495zb32nfng9lnt
In initramfs-tools boots, only use setsid when available
* initramfs-tools-script: If available, use setsid to start
mandos-to-cryptroot-unlock.
* initramfs-tools-script: If available, use setsid to start
mandos-to-cryptroot-unlock.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 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
80
import unittest
81
import random
82
import shlex
68
83
69
84
import dbus
70
85
import dbus.service
71
import gobject
72
import avahi
86
import gi
87
from gi.repository import GLib
73
88
from dbus.mainloop.glib import DBusGMainLoop
74
89
import ctypes
75
90
import ctypes.util
76
91
import xml.dom.minidom
77
92
import inspect
78
import GnuPGInterface
79
80
try:
93
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
81
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
123
except AttributeError:
83
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
84
127
from IN import SO_BINDTODEVICE
85
128
except ImportError:
86
SO_BINDTODEVICE = None
87
88
version = "1.4.1"
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.11"
89
147
stored_state_file = "clients.pickle"
90
148
91
149
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
95
152
96
153
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
100
156
except (OSError, AttributeError):
157
101
158
def if_nametoindex(interface):
102
159
"Get an interface index the hard way, i.e. using fcntl()"
103
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
161
with contextlib.closing(socket.socket()) as s:
105
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
165
return interface_index
111
166
112
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
113
184
def initlogger(debug, level=logging.WARNING):
114
185
"""init logger and add loglevel"""
115
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
116
191
syslogger.setFormatter(logging.Formatter
117
192
('Mandos [%(process)d]: %(levelname)s:'
118
193
' %(message)s'))
119
194
logger.addHandler(syslogger)
120
195
121
196
if debug:
122
197
console = logging.StreamHandler()
123
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
133
208
pass
134
209
135
210
136
class PGPEngine(object):
211
class PGPEngine:
137
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
138
214
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
148
235
def __enter__(self):
149
236
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
237
238
def __exit__(self, exc_type, exc_value, traceback):
152
239
self._cleanup()
153
240
return False
154
241
155
242
def __del__(self):
156
243
self._cleanup()
157
244
158
245
def _cleanup(self):
159
246
if self.tempdir is not None:
160
247
# Delete contents of tempdir
161
248
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
249
topdown=False):
163
250
for filename in files:
164
251
os.remove(os.path.join(root, filename))
165
252
for dirname in dirs:
167
254
# Remove tempdir
168
255
os.rmdir(self.tempdir)
169
256
self.tempdir = None
170
257
171
258
def password_encode(self, password):
172
259
# Passphrase can not be empty and can not contain newlines or
173
260
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
176
269
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
191
285
return ciphertext
192
286
193
287
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
208
303
return decrypted_plaintext
209
304
210
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
211
331
212
332
class AvahiError(Exception):
213
333
def __init__(self, value, *args, **kwargs):
214
334
self.value = value
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
218
338
219
339
class AvahiServiceError(AvahiError):
220
340
pass
221
341
342
222
343
class AvahiGroupError(AvahiError):
223
344
pass
224
345
225
346
226
class AvahiService(object):
347
class AvahiService:
227
348
"""An Avahi (Zeroconf) service.
228
349
229
350
Attributes:
230
351
interface: integer; avahi.IF_UNSPEC or an interface index.
231
352
Used to optionally bind to the specified interface.
232
353
name: string; Example: 'Mandos'
233
354
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
235
356
port: integer; what port to announce
236
357
TXT: list of strings; TXT record for the service
237
358
domain: string; Domain to publish on, default to .local if empty.
243
364
server: D-Bus Server
244
365
bus: dbus.SystemBus()
245
366
"""
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
249
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
250
379
self.interface = interface
251
380
self.name = name
252
381
self.type = servicetype
261
390
self.server = None
262
391
self.bus = bus
263
392
self.entry_group_state_changed_match = None
264
def rename(self):
393
394
def rename(self, remove=True):
265
395
"""Derived from the Avahi example code"""
266
396
if self.rename_count >= self.max_renames:
267
397
logger.critical("No suitable Zeroconf service name found"
268
398
" after %i retries, exiting.",
269
399
self.rename_count)
270
400
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
273
404
logger.info("Changing Zeroconf service name to %r ...",
274
405
self.name)
275
self.remove()
406
if remove:
407
self.remove()
276
408
try:
277
409
self.add()
278
410
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
282
self.rename_count += 1
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
283
420
def remove(self):
284
421
"""Derived from the Avahi example code"""
285
422
if self.entry_group_state_changed_match is not None:
287
424
self.entry_group_state_changed_match = None
288
425
if self.group is not None:
289
426
self.group.Reset()
427
290
428
def add(self):
291
429
"""Derived from the Avahi example code"""
292
430
self.remove()
309
447
dbus.UInt16(self.port),
310
448
avahi.string_array_to_txt_array(self.TXT))
311
449
self.group.Commit()
450
312
451
def entry_group_state_changed(self, state, error):
313
452
"""Derived from the Avahi example code"""
314
453
logger.debug("Avahi entry group state change: %i", state)
315
454
316
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
456
logger.debug("Zeroconf service established.")
318
457
elif state == avahi.ENTRY_GROUP_COLLISION:
320
459
self.rename()
321
460
elif state == avahi.ENTRY_GROUP_FAILURE:
322
461
logger.critical("Avahi: Error in group state changed %s",
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
326
465
def cleanup(self):
327
466
"""Derived from the Avahi example code"""
328
467
if self.group is not None:
333
472
pass
334
473
self.group = None
335
474
self.remove()
475
336
476
def server_state_changed(self, state, error=None):
337
477
"""Derived from the Avahi example code"""
338
478
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
346
485
if state in bad_states:
347
486
if bad_states[state] is not None:
348
487
if error is None:
351
490
logger.error(bad_states[state] + ": %r", error)
352
491
self.cleanup()
353
492
elif state == avahi.SERVER_RUNNING:
354
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
355
505
else:
356
506
if error is None:
357
507
logger.debug("Unknown state: %r", state)
358
508
else:
359
509
logger.debug("Unknown state: %r: %r", state, error)
510
360
511
def activate(self):
361
512
"""Derived from the Avahi example code"""
362
513
if self.server is None:
366
517
follow_name_owner_changes=True),
367
518
avahi.DBUS_INTERFACE_SERVER)
368
519
self.server.connect_to_signal("StateChanged",
369
self.server_state_changed)
520
self.server_state_changed)
370
521
self.server_state_changed(self.server.GetState())
371
522
523
372
524
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
525
def rename(self, *args, **kwargs):
374
526
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
527
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
.format(self.name)))
380
531
return ret
381
532
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
class Client(object):
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
598
message, *args)
599
600
class CertificateSecurityError(Error):
601
pass
602
603
# Classes
604
class Credentials:
605
def __init__(self):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
610
611
def __del__(self):
612
gnutls.certificate_free_credentials(self._c_object)
613
614
class ClientSession:
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
620
if gnutls.has_rawpk:
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
623
del gnutls_flags
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
627
True)
628
self.socket = socket
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
633
ctypes.c_void_p))
634
self.credentials = credentials
635
636
def __del__(self):
637
gnutls.deinit(self._c_object)
638
639
def handshake(self):
640
return gnutls.handshake(self._c_object)
641
642
def send(self, data):
643
data = bytes(data)
644
data_len = len(data)
645
while data_len > 0:
646
data_len -= gnutls.record_send(self._c_object,
647
data[-data_len:],
648
data_len)
649
650
def bye(self):
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
657
if result >= 0:
658
return result
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
662
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
666
while result < 0:
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
670
return result
671
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
674
675
# Functions
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
680
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
684
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
688
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
691
ctypes.c_size_t]
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
694
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
700
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
706
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
710
ctypes.c_int]
711
handshake_set_private_extensions.restype = None
712
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
715
ctypes.c_void_p]
716
credentials_set.restype = _error_code
717
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
721
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
725
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
734
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
738
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
742
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
747
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
751
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
756
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
760
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
765
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
768
769
if has_rawpk:
770
# Types
771
class pubkey_st(ctypes.Structure):
772
_fields = []
773
pubkey_t = ctypes.POINTER(pubkey_st)
774
775
x509_crt_fmt_t = ctypes.c_int
776
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
781
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
784
x509_crt_fmt_t]
785
pubkey_import.restype = _error_code
786
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
792
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
796
else:
797
# All the function declarations below are from gnutls/openpgp.h
798
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
802
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
806
openpgp_crt_fmt_t]
807
openpgp_crt_import.restype = _error_code
808
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
813
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
817
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
821
ctypes.c_void_p,
822
ctypes.POINTER(
823
ctypes.c_size_t)]
824
openpgp_crt_get_fingerprint.restype = _error_code
825
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
830
831
# Remove non-public functions
832
del _error_code, _retry_on_error
833
834
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
838
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
841
"""
842
connection.send(func(*args, **kwargs))
843
connection.close()
844
845
846
class Client:
389
847
"""A representation of a client host served by this server.
390
848
391
849
Attributes:
392
850
approved: bool(); 'None' if not yet approved/disapproved
393
851
approval_delay: datetime.timedelta(); Time to wait for approval
394
852
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
855
running.
856
checker_callback_tag: a GLib event source tag, or None
399
857
checker_command: string; External command which is run to check
400
858
if client lives. %() expansions are done at
401
859
runtime with vars(self) as dict, so that for
402
860
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
861
checker_initiator_tag: a GLib event source tag, or None
404
862
created: datetime.datetime(); (UTC) object creation
405
863
client_structure: Object describing what attributes a client has
406
864
and is used for storing the client at exit
407
865
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
866
disable_initiator_tag: a GLib event source tag, or None
409
867
enabled: bool()
410
868
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
412
872
host: string; available for use by the checker command
413
873
interval: datetime.timedelta(); How often to start a new checker
414
874
last_approval_request: datetime.datetime(); (UTC) or None
415
875
last_checked_ok: datetime.datetime(); (UTC) or None
416
876
last_checker_status: integer between 0 and 255 reflecting exit
417
877
status of last checker. -1 reflects crashed
418
checker, or None.
878
checker, -2 means no checker completed yet.
879
last_checker_signal: The signal which killed the last checker, if
880
last_checker_status is -1
419
881
last_enabled: datetime.datetime(); (UTC) or None
420
882
name: string; from the config file, used in log messages and
421
883
D-Bus identifiers
422
884
secret: bytestring; sent verbatim (over TLS) to client
423
885
timeout: datetime.timedelta(); How long from last_checked_ok
424
886
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
887
extended_timeout: extra long timeout when secret has been sent
426
888
runtime_expansions: Allowed attributes for runtime expansion.
427
889
expires: datetime.datetime(); time (UTC) when a client will be
428
890
disabled, or None
891
server_settings: The server_settings dict from main()
429
892
"""
430
893
431
894
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
895
"created", "enabled", "expires", "key_id",
896
"fingerprint", "host", "interval",
897
"last_approval_request", "last_checked_ok",
434
898
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
445
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
453
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
899
client_defaults = {
900
"timeout": "PT5M",
901
"extended_timeout": "PT15M",
902
"interval": "PT2M",
903
"checker": "fping -q -- %%(host)s",
904
"host": "",
905
"approval_delay": "PT0S",
906
"approval_duration": "PT1S",
907
"approved_by_default": "True",
908
"enabled": "True",
909
}
460
910
461
911
@staticmethod
462
912
def config_parser(config):
463
""" Construct a new dict of client settings of this form:
913
"""Construct a new dict of client settings of this form:
464
914
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above"""
915
with exceptions for any special settings as defined above.
916
NOTE: Must be a pure function. Must return the same result
917
value given the same arguments.
918
"""
466
919
settings = {}
467
920
for client_name in config.sections():
468
921
section = dict(config.items(client_name))
469
922
client = settings[client_name] = {}
470
923
471
924
client["host"] = section["host"]
472
925
# Reformat values from string types to Python types
473
926
client["approved_by_default"] = config.getboolean(
474
927
client_name, "approved_by_default")
475
client["enabled"] = config.getboolean(client_name, "enabled")
476
928
client["enabled"] = config.getboolean(client_name,
929
"enabled")
930
931
# Uppercase and remove spaces from key_id and fingerprint
932
# for later comparison purposes with return value from the
933
# key_id() and fingerprint() functions
934
client["key_id"] = (section.get("key_id", "").upper()
935
.replace(" ", ""))
477
936
client["fingerprint"] = (section["fingerprint"].upper()
478
937
.replace(" ", ""))
479
938
if "secret" in section:
480
client["secret"] = section["secret"].decode("base64")
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
481
942
elif "secfile" in section:
482
943
with open(os.path.expanduser(os.path.expandvars
483
944
(section["secfile"])),
484
945
"rb") as secfile:
485
946
client["secret"] = secfile.read()
486
947
else:
487
raise TypeError("No secret or secfile for section %s"
488
% section)
948
raise TypeError("No secret or secfile for section {}"
949
.format(section))
489
950
client["timeout"] = string_to_delta(section["timeout"])
490
951
client["extended_timeout"] = string_to_delta(
491
952
section["extended_timeout"])
497
958
client["checker_command"] = section["checker"]
498
959
client["last_approval_request"] = None
499
960
client["last_checked_ok"] = None
500
client["last_checker_status"] = None
501
if client["enabled"]:
502
client["last_enabled"] = datetime.datetime.utcnow()
503
client["expires"] = (datetime.datetime.utcnow()
504
+ client["timeout"])
505
else:
506
client["last_enabled"] = None
507
client["expires"] = None
961
client["last_checker_status"] = -2
508
962
509
963
return settings
510
511
512
def __init__(self, settings, name = None):
513
"""Note: the 'checker' key in 'config' sets the
514
'checker_command' attribute and *not* the 'checker'
515
attribute."""
964
965
def __init__(self, settings, name=None, server_settings=None):
516
966
self.name = name
967
if server_settings is None:
968
server_settings = {}
969
self.server_settings = server_settings
517
970
# adding all client settings
518
for setting, value in settings.iteritems():
971
for setting, value in settings.items():
519
972
setattr(self, setting, value)
520
973
974
if self.enabled:
975
if not hasattr(self, "last_enabled"):
976
self.last_enabled = datetime.datetime.utcnow()
977
if not hasattr(self, "expires"):
978
self.expires = (datetime.datetime.utcnow()
979
+ self.timeout)
980
else:
981
self.last_enabled = None
982
self.expires = None
983
521
984
logger.debug("Creating client %r", self.name)
522
# Uppercase and remove spaces from fingerprint for later
523
# comparison purposes with return value from the fingerprint()
524
# function
985
logger.debug(" Key ID: %s", self.key_id)
525
986
logger.debug(" Fingerprint: %s", self.fingerprint)
526
self.created = settings.get("created", datetime.datetime.utcnow())
987
self.created = settings.get("created",
988
datetime.datetime.utcnow())
527
989
528
990
# attributes specific for this server instance
529
991
self.checker = None
533
995
self.current_checker_command = None
534
996
self.approved = None
535
997
self.approvals_pending = 0
536
self.changedstate = (multiprocessing_manager
537
.Condition(multiprocessing_manager
538
.Lock()))
539
self.client_structure = [attr for attr in
540
self.__dict__.iterkeys()
998
self.changedstate = multiprocessing_manager.Condition(
999
multiprocessing_manager.Lock())
1000
self.client_structure = [attr
1001
for attr in self.__dict__.keys()
541
1002
if not attr.startswith("_")]
542
1003
self.client_structure.append("client_structure")
543
544
for name, t in inspect.getmembers(type(self),
545
lambda obj:
546
isinstance(obj,
547
property)):
1004
1005
for name, t in inspect.getmembers(
1006
type(self), lambda obj: isinstance(obj, property)):
548
1007
if not name.startswith("_"):
549
1008
self.client_structure.append(name)
550
1009
551
1010
# Send notice to process children that client state has changed
552
1011
def send_changedstate(self):
553
1012
with self.changedstate:
554
1013
self.changedstate.notify_all()
555
1014
556
1015
def enable(self):
557
1016
"""Start this client's checker and timeout hooks"""
558
1017
if getattr(self, "enabled", False):
559
1018
# Already enabled
560
1019
return
561
self.send_changedstate()
562
1020
self.expires = datetime.datetime.utcnow() + self.timeout
563
1021
self.enabled = True
564
1022
self.last_enabled = datetime.datetime.utcnow()
565
1023
self.init_checker()
566
1024
self.send_changedstate()
1025
567
1026
def disable(self, quiet=True):
568
1027
"""Disable this client."""
569
1028
if not getattr(self, "enabled", False):
570
1029
return False
571
1030
if not quiet:
572
self.send_changedstate()
573
if not quiet:
574
1031
logger.info("Disabling client %s", self.name)
575
if getattr(self, "disable_initiator_tag", False):
576
gobject.source_remove(self.disable_initiator_tag)
1032
if getattr(self, "disable_initiator_tag", None) is not None:
1033
GLib.source_remove(self.disable_initiator_tag)
577
1034
self.disable_initiator_tag = None
578
1035
self.expires = None
579
if getattr(self, "checker_initiator_tag", False):
580
gobject.source_remove(self.checker_initiator_tag)
1036
if getattr(self, "checker_initiator_tag", None) is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
581
1038
self.checker_initiator_tag = None
582
1039
self.stop_checker()
583
1040
self.enabled = False
584
# Do not run this again if called by a gobject.timeout_add
1041
if not quiet:
1042
self.send_changedstate()
1043
# Do not run this again if called by a GLib.timeout_add
585
1044
return False
586
1045
587
1046
def __del__(self):
588
1047
self.disable()
589
1048
590
1049
def init_checker(self):
591
1050
# Schedule a new checker to be started an 'interval' from now,
592
1051
# and every interval from then on.
593
self.checker_initiator_tag = (gobject.timeout_add
594
(self.interval_milliseconds(),
595
self.start_checker))
1052
if self.checker_initiator_tag is not None:
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
1056
+ 1)),
1057
self.start_checker)
596
1058
# Schedule a disable() when 'timeout' has passed
597
self.disable_initiator_tag = (gobject.timeout_add
598
(self.timeout_milliseconds(),
599
self.disable))
1059
if self.disable_initiator_tag is not None:
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
int(self.timeout.total_seconds() * 1000), self.disable)
600
1063
# Also start a new checker *right now*.
601
1064
self.start_checker()
602
603
def checker_callback(self, pid, condition, command):
1065
1066
def checker_callback(self, source, condition, connection,
1067
command):
604
1068
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1071
connection.close()
1072
if self.checker is not None:
1073
self.checker.join()
605
1074
self.checker_callback_tag = None
606
1075
self.checker = None
607
if os.WIFEXITED(condition):
608
self.last_checker_status = os.WEXITSTATUS(condition)
1076
1077
if returncode >= 0:
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
609
1080
if self.last_checker_status == 0:
610
1081
logger.info("Checker for %(name)s succeeded",
611
1082
vars(self))
612
1083
self.checked_ok()
613
1084
else:
614
logger.info("Checker for %(name)s failed",
615
vars(self))
1085
logger.info("Checker for %(name)s failed", vars(self))
616
1086
else:
617
1087
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
618
1089
logger.warning("Checker for %(name)s crashed?",
619
1090
vars(self))
620
621
def checked_ok(self, timeout=None):
622
"""Bump up the timeout for this client.
623
624
This should only be called when the client has been seen,
625
alive and well.
626
"""
1091
return False
1092
1093
def checked_ok(self):
1094
"""Assert that the client has been seen, alive and well."""
1095
self.last_checked_ok = datetime.datetime.utcnow()
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
1098
self.bump_timeout()
1099
1100
def bump_timeout(self, timeout=None):
1101
"""Bump up the timeout for this client."""
627
1102
if timeout is None:
628
1103
timeout = self.timeout
629
self.last_checked_ok = datetime.datetime.utcnow()
630
1104
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
1105
GLib.source_remove(self.disable_initiator_tag)
1106
self.disable_initiator_tag = None
632
1107
if getattr(self, "enabled", False):
633
self.disable_initiator_tag = (gobject.timeout_add
634
(timedelta_to_milliseconds
635
(timeout), self.disable))
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
636
1110
self.expires = datetime.datetime.utcnow() + timeout
637
1111
638
1112
def need_approval(self):
639
1113
self.last_approval_request = datetime.datetime.utcnow()
640
1114
641
1115
def start_checker(self):
642
1116
"""Start a new checker subprocess if one is not running.
643
1117
644
1118
If a checker already exists, leave it running and do
645
1119
nothing."""
646
1120
# The reason for not killing a running checker is that if we
647
# did that, then if a checker (for some reason) started
648
# running slowly and taking more than 'interval' time, the
649
# client would inevitably timeout, since no checker would get
650
# a chance to run to completion. If we instead leave running
1121
# did that, and if a checker (for some reason) started running
1122
# slowly and taking more than 'interval' time, then the client
1123
# would inevitably timeout, since no checker would get a
1124
# chance to run to completion. If we instead leave running
651
1125
# checkers alone, the checker would have to take more time
652
1126
# than 'timeout' for the client to be disabled, which is as it
653
1127
# should be.
654
655
# If a checker exists, make sure it is not a zombie
656
try:
657
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
658
except (AttributeError, OSError) as error:
659
if (isinstance(error, OSError)
660
and error.errno != errno.ECHILD):
661
raise error
662
else:
663
if pid:
664
logger.warning("Checker was a zombie")
665
gobject.source_remove(self.checker_callback_tag)
666
self.checker_callback(pid, status,
667
self.current_checker_command)
1128
1129
if self.checker is not None and not self.checker.is_alive():
1130
logger.warning("Checker was not alive; joining")
1131
self.checker.join()
1132
self.checker = None
668
1133
# Start a new checker if needed
669
1134
if self.checker is None:
1135
# Escape attributes for the shell
1136
escaped_attrs = {
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
670
1139
try:
671
# In case checker_command has exactly one % operator
672
command = self.checker_command % self.host
673
except TypeError:
674
# Escape attributes for the shell
675
escaped_attrs = dict(
676
(attr,
677
re.escape(unicode(str(getattr(self, attr, "")),
678
errors=
679
'replace')))
680
for attr in
681
self.runtime_expansions)
682
683
try:
684
command = self.checker_command % escaped_attrs
685
except TypeError as error:
686
logger.error('Could not format string "%s":'
687
' %s', self.checker_command, error)
688
return True # Try again later
1140
command = self.checker_command % escaped_attrs
1141
except TypeError as error:
1142
logger.error('Could not format string "%s"',
1143
self.checker_command,
1144
exc_info=error)
1145
return True # Try again later
689
1146
self.current_checker_command = command
690
try:
691
logger.info("Starting checker %r for %s",
692
command, self.name)
693
# We don't need to redirect stdout and stderr, since
694
# in normal mode, that is already done by daemon(),
695
# and in debug mode we don't want to. (Stdin is
696
# always replaced by /dev/null.)
697
self.checker = subprocess.Popen(command,
698
close_fds=True,
699
shell=True, cwd="/")
700
self.checker_callback_tag = (gobject.child_watch_add
701
(self.checker.pid,
702
self.checker_callback,
703
data=command))
704
# The checker may have completed before the gobject
705
# watch was added. Check for this.
706
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
707
if pid:
708
gobject.source_remove(self.checker_callback_tag)
709
self.checker_callback(pid, status, command)
710
except OSError as error:
711
logger.error("Failed to start subprocess: %s",
712
error)
713
# Re-run this periodically if run by gobject.timeout_add
1147
logger.info("Starting checker %r for %s", command,
1148
self.name)
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1155
# created wnull.
1156
popen_args = {"close_fds": True,
1157
"shell": True,
1158
"cwd": "/"}
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1162
"stderr": wnull})
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1165
target=call_pipe,
1166
args=(pipe[1], subprocess.call, command),
1167
kwargs=popen_args)
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# Re-run this periodically if run by GLib.timeout_add
714
1174
return True
715
1175
716
1176
def stop_checker(self):
717
1177
"""Force the checker process, if any, to stop."""
718
1178
if self.checker_callback_tag:
719
gobject.source_remove(self.checker_callback_tag)
1179
GLib.source_remove(self.checker_callback_tag)
720
1180
self.checker_callback_tag = None
721
1181
if getattr(self, "checker", None) is None:
722
1182
return
723
1183
logger.debug("Stopping checker for %(name)s", vars(self))
724
try:
725
os.kill(self.checker.pid, signal.SIGTERM)
726
#time.sleep(0.5)
727
#if self.checker.poll() is None:
728
# os.kill(self.checker.pid, signal.SIGKILL)
729
except OSError as error:
730
if error.errno != errno.ESRCH: # No such process
731
raise
1184
self.checker.terminate()
732
1185
self.checker = None
733
1186
734
1187
735
def dbus_service_property(dbus_interface, signature="v",
736
access="readwrite", byte_arrays=False):
1188
def dbus_service_property(dbus_interface,
1189
signature="v",
1190
access="readwrite",
1191
byte_arrays=False):
737
1192
"""Decorators for marking methods of a DBusObjectWithProperties to
738
1193
become properties on the D-Bus.
739
1194
740
1195
The decorated method will be called with no arguments by "Get"
741
1196
and with one argument by "Set".
742
1197
743
1198
The parameters, where they are supported, are the same as
744
1199
dbus.service.method, except there is only "signature", since the
745
1200
type from Get() and the type sent to Set() is the same.
748
1203
# "Set" method, so we fail early here:
749
1204
if byte_arrays and signature != "ay":
750
1205
raise ValueError("Byte arrays not supported for non-'ay'"
751
" signature %r" % signature)
1206
" signature {!r}".format(signature))
1207
752
1208
def decorator(func):
753
1209
func._dbus_is_property = True
754
1210
func._dbus_interface = dbus_interface
757
1213
func._dbus_name = func.__name__
758
1214
if func._dbus_name.endswith("_dbus_property"):
759
1215
func._dbus_name = func._dbus_name[:-14]
760
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
761
return func
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1217
return func
1218
1219
return decorator
1220
1221
1222
def dbus_interface_annotations(dbus_interface):
1223
"""Decorator for marking functions returning interface annotations
1224
1225
Usage:
1226
1227
@dbus_interface_annotations("org.example.Interface")
1228
def _foo(self): # Function name does not matter
1229
return {"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1231
"false"}
1232
"""
1233
1234
def decorator(func):
1235
func._dbus_is_interface = True
1236
func._dbus_interface = dbus_interface
1237
func._dbus_name = dbus_interface
1238
return func
1239
1240
return decorator
1241
1242
1243
def dbus_annotations(annotations):
1244
"""Decorator to annotate D-Bus methods, signals or properties
1245
Usage:
1246
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1248
"org.freedesktop.DBus.Property."
1249
"EmitsChangedSignal": "false"})
1250
@dbus_service_property("org.example.Interface", signature="b",
1251
access="r")
1252
def Property_dbus_property(self):
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
1256
"""
1257
1258
def decorator(func):
1259
func._dbus_annotations = annotations
1260
return func
1261
762
1262
return decorator
763
1263
764
1264
765
1265
class DBusPropertyException(dbus.exceptions.DBusException):
766
1266
"""A base class for D-Bus property-related exceptions
767
1267
"""
768
def __unicode__(self):
769
return unicode(str(self))
1268
pass
770
1269
771
1270
772
1271
class DBusPropertyAccessException(DBusPropertyException):
781
1280
pass
782
1281
783
1282
784
class DBusObjectWithProperties(dbus.service.Object):
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1285
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
1288
"""
1289
1290
@staticmethod
1291
def _is_dbus_thing(thing):
1292
"""Returns a function testing if an attribute is a D-Bus thing
1293
1294
If called like _is_dbus_thing("method") it returns a function
1295
suitable for use as predicate to inspect.getmembers().
1296
"""
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1298
False)
1299
1300
def _get_all_dbus_things(self, thing):
1301
"""Returns a generator of (name, attribute) pairs
1302
"""
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
1304
athing.__get__(self))
1305
for cls in self.__class__.__mro__
1306
for name, athing in
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1308
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
out_signature="s",
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1315
1316
Inserts annotation tags on methods and signals.
1317
"""
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
connection)
1320
try:
1321
document = xml.dom.minidom.parseString(xmlstring)
1322
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1327
annots = dict()
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1337
"annotation")
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1348
)).items():
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1360
== "out"):
1361
arg.setAttribute("name",
1362
"xml_data")
1363
xmlstring = document.toxml("utf-8")
1364
document.unlink()
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1368
exc_info=error)
1369
return xmlstring
1370
1371
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
785
1373
"""A D-Bus object with properties.
786
1374
787
1375
Classes inheriting from this can use the dbus_service_property
788
1376
decorator to expose methods as D-Bus properties. It exposes the
789
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
790
1378
"""
791
792
@staticmethod
793
def _is_dbus_property(obj):
794
return getattr(obj, "_dbus_is_property", False)
795
796
def _get_all_dbus_properties(self):
797
"""Returns a generator of (name, attribute) pairs
798
"""
799
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
800
for cls in self.__class__.__mro__
801
for name, prop in
802
inspect.getmembers(cls, self._is_dbus_property))
803
1379
804
1380
def _get_dbus_property(self, interface_name, property_name):
805
1381
"""Returns a bound method if one exists which is a D-Bus
806
1382
property with the specified name and interface.
807
1383
"""
808
for cls in self.__class__.__mro__:
809
for name, value in (inspect.getmembers
810
(cls, self._is_dbus_property)):
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
811
1387
if (value._dbus_name == property_name
812
1388
and value._dbus_interface == interface_name):
813
1389
return value.__get__(self)
814
1390
815
1391
# No such property
816
raise DBusPropertyNotFound(self.dbus_object_path + ":"
817
+ interface_name + "."
818
+ property_name)
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1394
1395
@classmethod
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1401
for attr in dir(x))
1402
if name is not None)
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="ss",
821
1406
out_signature="v")
822
1407
def Get(self, interface_name, property_name):
823
1408
"""Standard D-Bus property Get() method, see D-Bus standard.
829
1414
if not hasattr(value, "variant_level"):
830
1415
return value
831
1416
return type(value)(value, variant_level=value.variant_level+1)
832
1417
833
1418
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
834
1419
def Set(self, interface_name, property_name, value):
835
1420
"""Standard D-Bus property Set() method, see D-Bus standard.
841
1426
# The byte_arrays option is not supported yet on
842
1427
# signatures other than "ay".
843
1428
if prop._dbus_signature != "ay":
844
raise ValueError
845
value = dbus.ByteArray(''.join(unichr(byte)
846
for byte in value))
1429
raise ValueError("Byte arrays not supported for non-"
1430
"'ay' signature {!r}"
1431
.format(prop._dbus_signature))
1432
value = dbus.ByteArray(bytes(value))
847
1433
prop(value)
848
849
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1434
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
1436
in_signature="s",
850
1437
out_signature="a{sv}")
851
1438
def GetAll(self, interface_name):
852
1439
"""Standard D-Bus property GetAll() method, see D-Bus
853
1440
standard.
854
1441
855
1442
Note: Will not include properties with access="write".
856
1443
"""
857
1444
properties = {}
858
for name, prop in self._get_all_dbus_properties():
1445
for name, prop in self._get_all_dbus_things("property"):
859
1446
if (interface_name
860
1447
and interface_name != prop._dbus_interface):
861
1448
# Interface non-empty but did not match
867
1454
if not hasattr(value, "variant_level"):
868
1455
properties[name] = value
869
1456
continue
870
properties[name] = type(value)(value, variant_level=
871
value.variant_level+1)
1457
properties[name] = type(value)(
1458
value, variant_level=value.variant_level + 1)
872
1459
return dbus.Dictionary(properties, signature="sv")
873
1460
1461
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1462
def PropertiesChanged(self, interface_name, changed_properties,
1463
invalidated_properties):
1464
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1465
standard.
1466
"""
1467
pass
1468
874
1469
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
875
1470
out_signature="s",
876
1471
path_keyword='object_path',
877
1472
connection_keyword='connection')
878
1473
def Introspect(self, object_path, connection):
879
"""Standard D-Bus method, overloaded to insert property tags.
1474
"""Overloading of standard D-Bus method.
1475
1476
Inserts property tags and interface annotation tags.
880
1477
"""
881
xmlstring = dbus.service.Object.Introspect(self, object_path,
882
connection)
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
883
1481
try:
884
1482
document = xml.dom.minidom.parseString(xmlstring)
1483
885
1484
def make_tag(document, name, prop):
886
1485
e = document.createElement("property")
887
1486
e.setAttribute("name", name)
888
1487
e.setAttribute("type", prop._dbus_signature)
889
1488
e.setAttribute("access", prop._dbus_access)
890
1489
return e
1490
891
1491
for if_tag in document.getElementsByTagName("interface"):
1492
# Add property tags
892
1493
for tag in (make_tag(document, name, prop)
893
1494
for name, prop
894
in self._get_all_dbus_properties()
1495
in self._get_all_dbus_things("property")
895
1496
if prop._dbus_interface
896
1497
== if_tag.getAttribute("name")):
897
1498
if_tag.appendChild(tag)
1499
# Add annotation tags for properties
1500
for tag in if_tag.getElementsByTagName("property"):
1501
annots = dict()
1502
for name, prop in self._get_all_dbus_things(
1503
"property"):
1504
if (name == tag.getAttribute("name")
1505
and prop._dbus_interface
1506
== if_tag.getAttribute("name")):
1507
annots.update(getattr(
1508
prop, "_dbus_annotations", {}))
1509
for name, value in annots.items():
1510
ann_tag = document.createElement(
1511
"annotation")
1512
ann_tag.setAttribute("name", name)
1513
ann_tag.setAttribute("value", value)
1514
tag.appendChild(ann_tag)
898
1515
# Add the names to the return values for the
899
1516
# "org.freedesktop.DBus.Properties" methods
900
1517
if (if_tag.getAttribute("name")
915
1532
except (AttributeError, xml.dom.DOMException,
916
1533
xml.parsers.expat.ExpatError) as error:
917
1534
logger.error("Failed to override Introspection method",
918
error)
919
return xmlstring
920
921
922
def datetime_to_dbus (dt, variant_level=0):
1535
exc_info=error)
1536
return xmlstring
1537
1538
1539
try:
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1544
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1547
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1552
1553
Note: No signals are sent automatically; they must be sent
1554
manually.
1555
"""
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1561
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
pass
1566
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1569
pass
1570
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
out_signature="s",
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1577
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1580
"""
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1582
object_path,
1583
connection)
1584
try:
1585
document = xml.dom.minidom.parseString(xmlstring)
1586
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1596
== "out"):
1597
arg.setAttribute(
1598
"name",
1599
"objpath_interfaces"
1600
"_and_properties")
1601
xmlstring = document.toxml("utf-8")
1602
document.unlink()
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1606
exc_info=error)
1607
return xmlstring
1608
1609
1610
def datetime_to_dbus(dt, variant_level=0):
923
1611
"""Convert a UTC datetime.datetime() to a D-Bus type."""
924
1612
if dt is None:
925
return dbus.String("", variant_level = variant_level)
926
return dbus.String(dt.isoformat(),
927
variant_level=variant_level)
928
929
930
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
931
.__metaclass__):
932
"""Applied to an empty subclass of a D-Bus object, this metaclass
933
will add additional D-Bus attributes matching a certain pattern.
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1615
1616
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1618
"""A class decorator; applied to a subclass of
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1620
interface names according to the "alt_interface_names" mapping.
1621
Usage:
1622
1623
@alternate_dbus_interfaces({"org.example.Interface":
1624
"net.example.AlternateInterface"})
1625
class SampleDBusObject(dbus.service.Object):
1626
@dbus.service.method("org.example.Interface")
1627
def SampleDBusMethod():
1628
pass
1629
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1631
reachable via two interfaces: "org.example.Interface" and
1632
"net.example.AlternateInterface", the latter of which will have
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1634
"true", unless "deprecate" is passed with a False value.
1635
1636
This works for methods and signals, and also for D-Bus properties
1637
(from DBusObjectWithProperties) and interfaces (from the
1638
dbus_interface_annotations decorator).
934
1639
"""
935
def __new__(mcs, name, bases, attr):
936
# Go through all the base classes which could have D-Bus
937
# methods, signals, or properties in them
938
for base in (b for b in bases
939
if issubclass(b, dbus.service.Object)):
940
# Go though all attributes of the base class
941
for attrname, attribute in inspect.getmembers(base):
1640
1641
def wrapper(cls):
1642
for orig_interface_name, alt_interface_name in (
1643
alt_interface_names.items()):
1644
attr = {}
1645
interface_names = set()
1646
# Go though all attributes of the class
1647
for attrname, attribute in inspect.getmembers(cls):
942
1648
# Ignore non-D-Bus attributes, and D-Bus attributes
943
1649
# with the wrong interface name
944
1650
if (not hasattr(attribute, "_dbus_interface")
945
or not attribute._dbus_interface
946
.startswith("se.recompile.Mandos")):
1651
or not attribute._dbus_interface.startswith(
1652
orig_interface_name)):
947
1653
continue
948
1654
# Create an alternate D-Bus interface name based on
949
1655
# the current name
950
alt_interface = (attribute._dbus_interface
951
.replace("se.recompile.Mandos",
952
"se.bsnet.fukt.Mandos"))
1656
alt_interface = attribute._dbus_interface.replace(
1657
orig_interface_name, alt_interface_name)
1658
interface_names.add(alt_interface)
953
1659
# Is this a D-Bus signal?
954
1660
if getattr(attribute, "_dbus_is_signal", False):
955
# Extract the original non-method function by
956
# black magic
957
nonmethod_func = (dict(
1661
# Extract the original non-method undecorated
1662
# function by black magic
1663
if sys.version_info.major == 2:
1664
nonmethod_func = (dict(
958
1665
zip(attribute.func_code.co_freevars,
959
attribute.__closure__))["func"]
960
.cell_contents)
1666
attribute.__closure__))
1667
["func"].cell_contents)
1668
else:
1669
nonmethod_func = (dict(
1670
zip(attribute.__code__.co_freevars,
1671
attribute.__closure__))
1672
["func"].cell_contents)
961
1673
# Create a new, but exactly alike, function
962
1674
# object, and decorate it to be a new D-Bus signal
963
1675
# with the alternate D-Bus interface name
964
new_function = (dbus.service.signal
965
(alt_interface,
966
attribute._dbus_signature)
967
(types.FunctionType(
968
nonmethod_func.func_code,
969
nonmethod_func.func_globals,
970
nonmethod_func.func_name,
971
nonmethod_func.func_defaults,
972
nonmethod_func.func_closure)))
1676
new_function = copy_function(nonmethod_func)
1677
new_function = (dbus.service.signal(
1678
alt_interface,
1679
attribute._dbus_signature)(new_function))
1680
# Copy annotations, if any
1681
try:
1682
new_function._dbus_annotations = dict(
1683
attribute._dbus_annotations)
1684
except AttributeError:
1685
pass
1686
973
1687
# Define a creator of a function to call both the
974
# old and new functions, so both the old and new
975
# signals gets sent when the function is called
1688
# original and alternate functions, so both the
1689
# original and alternate signals gets sent when
1690
# the function is called
976
1691
def fixscope(func1, func2):
977
1692
"""This function is a scope container to pass
978
1693
func1 and func2 to the "call_both" function
979
1694
outside of its arguments"""
1695
1696
@functools.wraps(func2)
980
1697
def call_both(*args, **kwargs):
981
1698
"""This function will emit two D-Bus
982
1699
signals by calling func1 and func2"""
983
1700
func1(*args, **kwargs)
984
1701
func2(*args, **kwargs)
1702
# Make wrapper function look like a D-Bus
1703
# signal
1704
for name, attr in inspect.getmembers(func2):
1705
if name.startswith("_dbus_"):
1706
setattr(call_both, name, attr)
1707
985
1708
return call_both
986
1709
# Create the "call_both" function and add it to
987
1710
# the class
988
attr[attrname] = fixscope(attribute,
989
new_function)
1711
attr[attrname] = fixscope(attribute, new_function)
990
1712
# Is this a D-Bus method?
991
1713
elif getattr(attribute, "_dbus_is_method", False):
992
1714
# Create a new, but exactly alike, function
993
1715
# object. Decorate it to be a new D-Bus method
994
1716
# with the alternate D-Bus interface name. Add it
995
1717
# to the class.
996
attr[attrname] = (dbus.service.method
997
(alt_interface,
998
attribute._dbus_in_signature,
999
attribute._dbus_out_signature)
1000
(types.FunctionType
1001
(attribute.func_code,
1002
attribute.func_globals,
1003
attribute.func_name,
1004
attribute.func_defaults,
1005
attribute.func_closure)))
1718
attr[attrname] = (
1719
dbus.service.method(
1720
alt_interface,
1721
attribute._dbus_in_signature,
1722
attribute._dbus_out_signature)
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
1006
1730
# Is this a D-Bus property?
1007
1731
elif getattr(attribute, "_dbus_is_property", False):
1008
1732
# Create a new, but exactly alike, function
1009
1733
# object, and decorate it to be a new D-Bus
1010
1734
# property with the alternate D-Bus interface
1011
1735
# name. Add it to the class.
1012
attr[attrname] = (dbus_service_property
1013
(alt_interface,
1014
attribute._dbus_signature,
1015
attribute._dbus_access,
1016
attribute
1017
._dbus_get_args_options
1018
["byte_arrays"])
1019
(types.FunctionType
1020
(attribute.func_code,
1021
attribute.func_globals,
1022
attribute.func_name,
1023
attribute.func_defaults,
1024
attribute.func_closure)))
1025
return type.__new__(mcs, name, bases, attr)
1026
1027
1736
attr[attrname] = (dbus_service_property(
1737
alt_interface, attribute._dbus_signature,
1738
attribute._dbus_access,
1739
attribute._dbus_get_args_options
1740
["byte_arrays"])
1741
(copy_function(attribute)))
1742
# Copy annotations, if any
1743
try:
1744
attr[attrname]._dbus_annotations = dict(
1745
attribute._dbus_annotations)
1746
except AttributeError:
1747
pass
1748
# Is this a D-Bus interface?
1749
elif getattr(attribute, "_dbus_is_interface", False):
1750
# Create a new, but exactly alike, function
1751
# object. Decorate it to be a new D-Bus interface
1752
# with the alternate D-Bus interface name. Add it
1753
# to the class.
1754
attr[attrname] = (
1755
dbus_interface_annotations(alt_interface)
1756
(copy_function(attribute)))
1757
if deprecate:
1758
# Deprecate all alternate interfaces
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1760
for interface_name in interface_names:
1761
1762
@dbus_interface_annotations(interface_name)
1763
def func(self):
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1766
# Find an unused name
1767
for aname in (iname.format(i)
1768
for i in itertools.count()):
1769
if aname not in attr:
1770
attr[aname] = func
1771
break
1772
if interface_names:
1773
# Replace the class with a new subclass of it with
1774
# methods, signals, etc. as created above.
1775
if sys.version_info.major == 2:
1776
cls = type(b"{}Alternate".format(cls.__name__),
1777
(cls, ), attr)
1778
else:
1779
cls = type("{}Alternate".format(cls.__name__),
1780
(cls, ), attr)
1781
return cls
1782
1783
return wrapper
1784
1785
1786
@alternate_dbus_interfaces({"se.recompile.Mandos":
1787
"se.bsnet.fukt.Mandos"})
1028
1788
class ClientDBus(Client, DBusObjectWithProperties):
1029
1789
"""A Client class using D-Bus
1030
1790
1031
1791
Attributes:
1032
1792
dbus_object_path: dbus.ObjectPath
1033
1793
bus: dbus.SystemBus()
1034
1794
"""
1035
1795
1036
1796
runtime_expansions = (Client.runtime_expansions
1037
+ ("dbus_object_path",))
1038
1797
+ ("dbus_object_path", ))
1798
1799
_interface = "se.recompile.Mandos.Client"
1800
1039
1801
# dbus.service.Object doesn't use super(), so we can't either.
1040
1041
def __init__(self, bus = None, *args, **kwargs):
1802
1803
def __init__(self, bus=None, *args, **kwargs):
1042
1804
self.bus = bus
1043
1805
Client.__init__(self, *args, **kwargs)
1044
self._approvals_pending = 0
1045
1046
self._approvals_pending = 0
1047
1806
# Only now, when this client is initialized, can it show up on
1048
1807
# the D-Bus
1049
client_object_name = unicode(self.name).translate(
1808
client_object_name = str(self.name).translate(
1050
1809
{ord("."): ord("_"),
1051
1810
ord("-"): ord("_")})
1052
self.dbus_object_path = (dbus.ObjectPath
1053
("/clients/" + client_object_name))
1811
self.dbus_object_path = dbus.ObjectPath(
1812
"/clients/" + client_object_name)
1054
1813
DBusObjectWithProperties.__init__(self, self.bus,
1055
1814
self.dbus_object_path)
1056
1057
def notifychangeproperty(transform_func,
1058
dbus_name, type_func=lambda x: x,
1059
variant_level=1):
1815
1816
def notifychangeproperty(transform_func, dbus_name,
1817
type_func=lambda x: x,
1818
variant_level=1,
1819
invalidate_only=False,
1820
_interface=_interface):
1060
1821
""" Modify a variable so that it's a property which announces
1061
1822
its changes to DBus.
1062
1823
1063
1824
transform_fun: Function that takes a value and a variant_level
1064
1825
and transforms it to a D-Bus type.
1065
1826
dbus_name: D-Bus name of the variable
1067
1828
to the D-Bus. Default: no transform
1068
1829
variant_level: D-Bus variant level. Default: 1
1069
1830
"""
1070
attrname = "_{0}".format(dbus_name)
1831
attrname = "_{}".format(dbus_name)
1832
1071
1833
def setter(self, value):
1072
1834
if hasattr(self, "dbus_object_path"):
1073
1835
if (not hasattr(self, attrname) or
1074
1836
type_func(getattr(self, attrname, None))
1075
1837
!= type_func(value)):
1076
dbus_value = transform_func(type_func(value),
1077
variant_level
1078
=variant_level)
1079
self.PropertyChanged(dbus.String(dbus_name),
1080
dbus_value)
1838
if invalidate_only:
1839
self.PropertiesChanged(
1840
_interface, dbus.Dictionary(),
1841
dbus.Array((dbus_name, )))
1842
else:
1843
dbus_value = transform_func(
1844
type_func(value),
1845
variant_level=variant_level)
1846
self.PropertyChanged(dbus.String(dbus_name),
1847
dbus_value)
1848
self.PropertiesChanged(
1849
_interface,
1850
dbus.Dictionary({dbus.String(dbus_name):
1851
dbus_value}),
1852
dbus.Array())
1081
1853
setattr(self, attrname, value)
1082
1854
1083
1855
return property(lambda self: getattr(self, attrname), setter)
1084
1085
1856
1086
1857
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1087
1858
approvals_pending = notifychangeproperty(dbus.Boolean,
1088
1859
"ApprovalPending",
1089
type_func = bool)
1860
type_func=bool)
1090
1861
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1091
1862
last_enabled = notifychangeproperty(datetime_to_dbus,
1092
1863
"LastEnabled")
1093
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1094
type_func = lambda checker:
1095
checker is not None)
1864
checker = notifychangeproperty(
1865
dbus.Boolean, "CheckerRunning",
1866
type_func=lambda checker: checker is not None)
1096
1867
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1097
1868
"LastCheckedOK")
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1870
"LastCheckerStatus")
1098
1871
last_approval_request = notifychangeproperty(
1099
1872
datetime_to_dbus, "LastApprovalRequest")
1100
1873
approved_by_default = notifychangeproperty(dbus.Boolean,
1101
1874
"ApprovedByDefault")
1102
approval_delay = notifychangeproperty(dbus.UInt64,
1103
"ApprovalDelay",
1104
type_func =
1105
timedelta_to_milliseconds)
1875
approval_delay = notifychangeproperty(
1876
dbus.UInt64, "ApprovalDelay",
1877
type_func=lambda td: td.total_seconds() * 1000)
1106
1878
approval_duration = notifychangeproperty(
1107
1879
dbus.UInt64, "ApprovalDuration",
1108
type_func = timedelta_to_milliseconds)
1880
type_func=lambda td: td.total_seconds() * 1000)
1109
1881
host = notifychangeproperty(dbus.String, "Host")
1110
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1111
type_func =
1112
timedelta_to_milliseconds)
1882
timeout = notifychangeproperty(
1883
dbus.UInt64, "Timeout",
1884
type_func=lambda td: td.total_seconds() * 1000)
1113
1885
extended_timeout = notifychangeproperty(
1114
1886
dbus.UInt64, "ExtendedTimeout",
1115
type_func = timedelta_to_milliseconds)
1116
interval = notifychangeproperty(dbus.UInt64,
1117
"Interval",
1118
type_func =
1119
timedelta_to_milliseconds)
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
interval = notifychangeproperty(
1889
dbus.UInt64, "Interval",
1890
type_func=lambda td: td.total_seconds() * 1000)
1120
1891
checker_command = notifychangeproperty(dbus.String, "Checker")
1121
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1893
invalidate_only=True)
1894
1122
1895
del notifychangeproperty
1123
1896
1124
1897
def __del__(self, *args, **kwargs):
1125
1898
try:
1126
1899
self.remove_from_connection()
1129
1902
if hasattr(DBusObjectWithProperties, "__del__"):
1130
1903
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1131
1904
Client.__del__(self, *args, **kwargs)
1132
1133
def checker_callback(self, pid, condition, command,
1134
*args, **kwargs):
1135
self.checker_callback_tag = None
1136
self.checker = None
1137
if os.WIFEXITED(condition):
1138
exitstatus = os.WEXITSTATUS(condition)
1905
1906
def checker_callback(self, source, condition,
1907
connection, command, *args, **kwargs):
1908
ret = Client.checker_callback(self, source, condition,
1909
connection, command, *args,
1910
**kwargs)
1911
exitstatus = self.last_checker_status
1912
if exitstatus >= 0:
1139
1913
# Emit D-Bus signal
1140
1914
self.CheckerCompleted(dbus.Int16(exitstatus),
1141
dbus.Int64(condition),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
1142
1917
dbus.String(command))
1143
1918
else:
1144
1919
# Emit D-Bus signal
1145
1920
self.CheckerCompleted(dbus.Int16(-1),
1146
dbus.Int64(condition),
1921
dbus.Int64(
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
1147
1925
dbus.String(command))
1148
1149
return Client.checker_callback(self, pid, condition, command,
1150
*args, **kwargs)
1151
1926
return ret
1927
1152
1928
def start_checker(self, *args, **kwargs):
1153
old_checker = self.checker
1154
if self.checker is not None:
1155
old_checker_pid = self.checker.pid
1156
else:
1157
old_checker_pid = None
1929
old_checker_pid = getattr(self.checker, "pid", None)
1158
1930
r = Client.start_checker(self, *args, **kwargs)
1159
1931
# Only if new checker process was started
1160
1932
if (self.checker is not None
1162
1934
# Emit D-Bus signal
1163
1935
self.CheckerStarted(self.current_checker_command)
1164
1936
return r
1165
1937
1166
1938
def _reset_approved(self):
1167
1939
self.approved = None
1168
1940
return False
1169
1941
1170
1942
def approve(self, value=True):
1171
self.send_changedstate()
1172
1943
self.approved = value
1173
gobject.timeout_add(timedelta_to_milliseconds
1174
(self.approval_duration),
1175
self._reset_approved)
1176
1177
1178
## D-Bus methods, signals & properties
1179
_interface = "se.recompile.Mandos.Client"
1180
1181
## Signals
1182
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
1946
self.send_changedstate()
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
1183
1954
# CheckerCompleted - signal
1184
1955
@dbus.service.signal(_interface, signature="nxs")
1185
1956
def CheckerCompleted(self, exitcode, waitstatus, command):
1186
1957
"D-Bus signal"
1187
1958
pass
1188
1959
1189
1960
# CheckerStarted - signal
1190
1961
@dbus.service.signal(_interface, signature="s")
1191
1962
def CheckerStarted(self, command):
1192
1963
"D-Bus signal"
1193
1964
pass
1194
1965
1195
1966
# PropertyChanged - signal
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1196
1968
@dbus.service.signal(_interface, signature="sv")
1197
1969
def PropertyChanged(self, property, value):
1198
1970
"D-Bus signal"
1199
1971
pass
1200
1972
1201
1973
# GotSecret - signal
1202
1974
@dbus.service.signal(_interface)
1203
1975
def GotSecret(self):
1206
1978
server to mandos-client
1207
1979
"""
1208
1980
pass
1209
1981
1210
1982
# Rejected - signal
1211
1983
@dbus.service.signal(_interface, signature="s")
1212
1984
def Rejected(self, reason):
1213
1985
"D-Bus signal"
1214
1986
pass
1215
1987
1216
1988
# NeedApproval - signal
1217
1989
@dbus.service.signal(_interface, signature="tb")
1218
1990
def NeedApproval(self, timeout, default):
1219
1991
"D-Bus signal"
1220
1992
return self.need_approval()
1221
1222
# NeRwequest - signal
1223
@dbus.service.signal(_interface, signature="s")
1224
def NewRequest(self, ip):
1225
"""D-Bus signal
1226
Is sent after a client request a password.
1227
"""
1228
pass
1229
1230
## Methods
1231
1993
1994
# Methods
1995
1232
1996
# Approve - method
1233
1997
@dbus.service.method(_interface, in_signature="b")
1234
1998
def Approve(self, value):
1235
1999
self.approve(value)
1236
2000
1237
2001
# CheckedOK - method
1238
2002
@dbus.service.method(_interface)
1239
2003
def CheckedOK(self):
1240
2004
self.checked_ok()
1241
2005
1242
2006
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1243
2008
@dbus.service.method(_interface)
1244
2009
def Enable(self):
1245
2010
"D-Bus method"
1246
2011
self.enable()
1247
2012
1248
2013
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1249
2015
@dbus.service.method(_interface)
1250
2016
def StartChecker(self):
1251
2017
"D-Bus method"
1252
2018
self.start_checker()
1253
2019
1254
2020
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1255
2022
@dbus.service.method(_interface)
1256
2023
def Disable(self):
1257
2024
"D-Bus method"
1258
2025
self.disable()
1259
2026
1260
2027
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1261
2029
@dbus.service.method(_interface)
1262
2030
def StopChecker(self):
1263
2031
self.stop_checker()
1264
1265
## Properties
1266
2032
2033
# Properties
2034
1267
2035
# ApprovalPending - property
1268
2036
@dbus_service_property(_interface, signature="b", access="read")
1269
2037
def ApprovalPending_dbus_property(self):
1270
2038
return dbus.Boolean(bool(self.approvals_pending))
1271
2039
1272
2040
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
2041
@dbus_service_property(_interface,
2042
signature="b",
1274
2043
access="readwrite")
1275
2044
def ApprovedByDefault_dbus_property(self, value=None):
1276
2045
if value is None: # get
1277
2046
return dbus.Boolean(self.approved_by_default)
1278
2047
self.approved_by_default = bool(value)
1279
2048
1280
2049
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
2050
@dbus_service_property(_interface,
2051
signature="t",
1282
2052
access="readwrite")
1283
2053
def ApprovalDelay_dbus_property(self, value=None):
1284
2054
if value is None: # get
1285
return dbus.UInt64(self.approval_delay_milliseconds())
2055
return dbus.UInt64(self.approval_delay.total_seconds()
2056
* 1000)
1286
2057
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1287
2058
1288
2059
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
2060
@dbus_service_property(_interface,
2061
signature="t",
1290
2062
access="readwrite")
1291
2063
def ApprovalDuration_dbus_property(self, value=None):
1292
2064
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
2065
return dbus.UInt64(self.approval_duration.total_seconds()
2066
* 1000)
1295
2067
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1296
2068
1297
2069
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1298
2072
@dbus_service_property(_interface, signature="s", access="read")
1299
2073
def Name_dbus_property(self):
1300
2074
return dbus.String(self.name)
1301
2075
2076
# KeyID - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2082
1302
2083
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1303
2086
@dbus_service_property(_interface, signature="s", access="read")
1304
2087
def Fingerprint_dbus_property(self):
1305
2088
return dbus.String(self.fingerprint)
1306
2089
1307
2090
# Host - property
1308
@dbus_service_property(_interface, signature="s",
2091
@dbus_service_property(_interface,
2092
signature="s",
1309
2093
access="readwrite")
1310
2094
def Host_dbus_property(self, value=None):
1311
2095
if value is None: # get
1312
2096
return dbus.String(self.host)
1313
self.host = unicode(value)
1314
2097
self.host = str(value)
2098
1315
2099
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1316
2102
@dbus_service_property(_interface, signature="s", access="read")
1317
2103
def Created_dbus_property(self):
1318
2104
return datetime_to_dbus(self.created)
1319
2105
1320
2106
# LastEnabled - property
1321
2107
@dbus_service_property(_interface, signature="s", access="read")
1322
2108
def LastEnabled_dbus_property(self):
1323
2109
return datetime_to_dbus(self.last_enabled)
1324
2110
1325
2111
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
2112
@dbus_service_property(_interface,
2113
signature="b",
1327
2114
access="readwrite")
1328
2115
def Enabled_dbus_property(self, value=None):
1329
2116
if value is None: # get
1332
2119
self.enable()
1333
2120
else:
1334
2121
self.disable()
1335
2122
1336
2123
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
2124
@dbus_service_property(_interface,
2125
signature="s",
1338
2126
access="readwrite")
1339
2127
def LastCheckedOK_dbus_property(self, value=None):
1340
2128
if value is not None:
1341
2129
self.checked_ok()
1342
2130
return
1343
2131
return datetime_to_dbus(self.last_checked_ok)
1344
2132
2133
# LastCheckerStatus - property
2134
@dbus_service_property(_interface, signature="n", access="read")
2135
def LastCheckerStatus_dbus_property(self):
2136
return dbus.Int16(self.last_checker_status)
2137
1345
2138
# Expires - property
1346
2139
@dbus_service_property(_interface, signature="s", access="read")
1347
2140
def Expires_dbus_property(self):
1348
2141
return datetime_to_dbus(self.expires)
1349
2142
1350
2143
# LastApprovalRequest - property
1351
2144
@dbus_service_property(_interface, signature="s", access="read")
1352
2145
def LastApprovalRequest_dbus_property(self):
1353
2146
return datetime_to_dbus(self.last_approval_request)
1354
2147
1355
2148
# Timeout - property
1356
@dbus_service_property(_interface, signature="t",
2149
@dbus_service_property(_interface,
2150
signature="t",
1357
2151
access="readwrite")
1358
2152
def Timeout_dbus_property(self, value=None):
1359
2153
if value is None: # get
1360
return dbus.UInt64(self.timeout_milliseconds())
2154
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2155
old_timeout = self.timeout
1361
2156
self.timeout = datetime.timedelta(0, 0, 0, value)
1362
if getattr(self, "disable_initiator_tag", None) is None:
1363
return
1364
# Reschedule timeout
1365
gobject.source_remove(self.disable_initiator_tag)
1366
self.disable_initiator_tag = None
1367
self.expires = None
1368
time_to_die = timedelta_to_milliseconds((self
1369
.last_checked_ok
1370
+ self.timeout)
1371
- datetime.datetime
1372
.utcnow())
1373
if time_to_die <= 0:
1374
# The timeout has passed
1375
self.disable()
1376
else:
1377
self.expires = (datetime.datetime.utcnow()
1378
+ datetime.timedelta(milliseconds =
1379
time_to_die))
1380
self.disable_initiator_tag = (gobject.timeout_add
1381
(time_to_die, self.disable))
1382
2157
# Reschedule disabling
2158
if self.enabled:
2159
now = datetime.datetime.utcnow()
2160
self.expires += self.timeout - old_timeout
2161
if self.expires <= now:
2162
# The timeout has passed
2163
self.disable()
2164
else:
2165
if (getattr(self, "disable_initiator_tag", None)
2166
is None):
2167
return
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
int((self.expires - now).total_seconds() * 1000),
2171
self.disable)
2172
1383
2173
# ExtendedTimeout - property
1384
@dbus_service_property(_interface, signature="t",
2174
@dbus_service_property(_interface,
2175
signature="t",
1385
2176
access="readwrite")
1386
2177
def ExtendedTimeout_dbus_property(self, value=None):
1387
2178
if value is None: # get
1388
return dbus.UInt64(self.extended_timeout_milliseconds())
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
2180
* 1000)
1389
2181
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1390
2182
1391
2183
# Interval - property
1392
@dbus_service_property(_interface, signature="t",
2184
@dbus_service_property(_interface,
2185
signature="t",
1393
2186
access="readwrite")
1394
2187
def Interval_dbus_property(self, value=None):
1395
2188
if value is None: # get
1396
return dbus.UInt64(self.interval_milliseconds())
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1397
2190
self.interval = datetime.timedelta(0, 0, 0, value)
1398
2191
if getattr(self, "checker_initiator_tag", None) is None:
1399
2192
return
1400
2193
if self.enabled:
1401
2194
# Reschedule checker run
1402
gobject.source_remove(self.checker_initiator_tag)
1403
self.checker_initiator_tag = (gobject.timeout_add
1404
(value, self.start_checker))
1405
self.start_checker() # Start one now, too
1406
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
self.start_checker() # Start one now, too
2199
1407
2200
# Checker - property
1408
@dbus_service_property(_interface, signature="s",
2201
@dbus_service_property(_interface,
2202
signature="s",
1409
2203
access="readwrite")
1410
2204
def Checker_dbus_property(self, value=None):
1411
2205
if value is None: # get
1412
2206
return dbus.String(self.checker_command)
1413
self.checker_command = unicode(value)
1414
2207
self.checker_command = str(value)
2208
1415
2209
# CheckerRunning - property
1416
@dbus_service_property(_interface, signature="b",
2210
@dbus_service_property(_interface,
2211
signature="b",
1417
2212
access="readwrite")
1418
2213
def CheckerRunning_dbus_property(self, value=None):
1419
2214
if value is None: # get
1422
2217
self.start_checker()
1423
2218
else:
1424
2219
self.stop_checker()
1425
2220
1426
2221
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
1427
2225
@dbus_service_property(_interface, signature="o", access="read")
1428
2226
def ObjectPath_dbus_property(self):
1429
return self.dbus_object_path # is already a dbus.ObjectPath
1430
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1431
2229
# Secret = property
1432
@dbus_service_property(_interface, signature="ay",
1433
access="write", byte_arrays=True)
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2232
"invalidates"})
2233
@dbus_service_property(_interface,
2234
signature="ay",
2235
access="write",
2236
byte_arrays=True)
1434
2237
def Secret_dbus_property(self, value):
1435
self.secret = str(value)
1436
2238
self.secret = bytes(value)
2239
1437
2240
del _interface
1438
2241
1439
2242
1440
class ProxyClient(object):
1441
def __init__(self, child_pipe, fpr, address):
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1442
2245
self._pipe = child_pipe
1443
self._pipe.send(('init', fpr, address))
2246
self._pipe.send(('init', key_id, fpr, address))
1444
2247
if not self._pipe.recv():
1445
raise KeyError()
1446
2248
raise KeyError(key_id or fpr)
2249
1447
2250
def __getattribute__(self, name):
1448
2251
if name == '_pipe':
1449
2252
return super(ProxyClient, self).__getattribute__(name)
1452
2255
if data[0] == 'data':
1453
2256
return data[1]
1454
2257
if data[0] == 'function':
2258
1455
2259
def func(*args, **kwargs):
1456
2260
self._pipe.send(('funcall', name, args, kwargs))
1457
2261
return self._pipe.recv()[1]
2262
1458
2263
return func
1459
2264
1460
2265
def __setattr__(self, name, value):
1461
2266
if name == '_pipe':
1462
2267
return super(ProxyClient, self).__setattr__(name, value)
1463
2268
self._pipe.send(('setattr', name, value))
1464
2269
1465
2270
1466
class ClientDBusTransitional(ClientDBus):
1467
__metaclass__ = AlternateDBusNamesMetaclass
1468
1469
1470
2271
class ClientHandler(socketserver.BaseRequestHandler, object):
1471
2272
"""A class to handle client connections.
1472
2273
1473
2274
Instantiated once for each connection to handle it.
1474
2275
Note: This will run in its own forked process."""
1475
2276
1476
2277
def handle(self):
1477
2278
with contextlib.closing(self.server.child_pipe) as child_pipe:
1478
2279
logger.info("TCP connection from: %s",
1479
unicode(self.client_address))
2280
str(self.client_address))
1480
2281
logger.debug("Pipe FD: %d",
1481
2282
self.server.child_pipe.fileno())
1482
1483
session = (gnutls.connection
1484
.ClientSession(self.request,
1485
gnutls.connection
1486
.X509Credentials()))
1487
1488
# Note: gnutls.connection.X509Credentials is really a
1489
# generic GnuTLS certificate credentials object so long as
1490
# no X.509 keys are added to it. Therefore, we can use it
1491
# here despite using OpenPGP certificates.
1492
1493
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1494
# "+AES-256-CBC", "+SHA1",
1495
# "+COMP-NULL", "+CTYPE-OPENPGP",
1496
# "+DHE-DSS"))
2283
2284
session = gnutls.ClientSession(self.request)
2285
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2289
# "+DHE-DSS"))
1497
2290
# Use a fallback default, since this MUST be set.
1498
2291
priority = self.server.gnutls_priority
1499
2292
if priority is None:
1500
2293
priority = "NORMAL"
1501
(gnutls.library.functions
1502
.gnutls_priority_set_direct(session._c_object,
1503
priority, None))
1504
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1505
2298
# Start communication using the Mandos protocol
1506
2299
# Get protocol number
1507
2300
line = self.request.makefile().readline()
1508
2301
logger.debug("Protocol version: %r", line)
1509
2302
try:
1510
2303
if int(line.strip().split()[0]) > 1:
1511
raise RuntimeError
2304
raise RuntimeError(line)
1512
2305
except (ValueError, IndexError, RuntimeError) as error:
1513
2306
logger.error("Unknown protocol version: %s", error)
1514
2307
return
1515
2308
1516
2309
# Start GnuTLS connection
1517
2310
try:
1518
2311
session.handshake()
1519
except gnutls.errors.GNUTLSError as error:
2312
except gnutls.Error as error:
1520
2313
logger.warning("Handshake failed: %s", error)
1521
2314
# Do not run session.bye() here: the session is not
1522
2315
# established. Just abandon the request.
1523
2316
return
1524
2317
logger.debug("Handshake succeeded")
1525
2318
1526
2319
approval_required = False
1527
2320
try:
1528
try:
1529
fpr = self.fingerprint(self.peer_certificate
1530
(session))
1531
except (TypeError,
1532
gnutls.errors.GNUTLSError) as error:
1533
logger.warning("Bad certificate: %s", error)
1534
return
1535
logger.debug("Fingerprint: %s", fpr)
1536
1537
try:
1538
client = ProxyClient(child_pipe, fpr,
2321
if gnutls.has_rawpk:
2322
fpr = b""
2323
try:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2328
return
2329
logger.debug("Key ID: %s", key_id)
2330
2331
else:
2332
key_id = b""
2333
try:
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2338
return
2339
logger.debug("Fingerprint: %s", fpr)
2340
2341
try:
2342
client = ProxyClient(child_pipe, key_id, fpr,
1539
2343
self.client_address)
1540
2344
except KeyError:
1541
2345
return
1542
1543
if self.server.use_dbus:
1544
# Emit D-Bus signal
1545
client.NewRequest(str(self.client_address))
1546
2346
1547
2347
if client.approval_delay:
1548
2348
delay = client.approval_delay
1549
2349
client.approvals_pending += 1
1550
2350
approval_required = True
1551
2351
1552
2352
while True:
1553
2353
if not client.enabled:
1554
2354
logger.info("Client %s is disabled",
1555
client.name)
2355
client.name)
1556
2356
if self.server.use_dbus:
1557
2357
# Emit D-Bus signal
1558
2358
client.Rejected("Disabled")
1559
2359
return
1560
2360
1561
2361
if client.approved or not client.approval_delay:
1562
#We are approved or approval is disabled
2362
# We are approved or approval is disabled
1563
2363
break
1564
2364
elif client.approved is None:
1565
2365
logger.info("Client %s needs approval",
1567
2367
if self.server.use_dbus:
1568
2368
# Emit D-Bus signal
1569
2369
client.NeedApproval(
1570
client.approval_delay_milliseconds(),
1571
client.approved_by_default)
2370
client.approval_delay.total_seconds()
2371
* 1000, client.approved_by_default)
1572
2372
else:
1573
2373
logger.warning("Client %s was not approved",
1574
2374
client.name)
1576
2376
# Emit D-Bus signal
1577
2377
client.Rejected("Denied")
1578
2378
return
1579
1580
#wait until timeout or approved
2379
2380
# wait until timeout or approved
1581
2381
time = datetime.datetime.now()
1582
2382
client.changedstate.acquire()
1583
(client.changedstate.wait
1584
(float(client.timedelta_to_milliseconds(delay)
1585
/ 1000)))
2383
client.changedstate.wait(delay.total_seconds())
1586
2384
client.changedstate.release()
1587
2385
time2 = datetime.datetime.now()
1588
2386
if (time2 - time) >= delay:
1598
2396
break
1599
2397
else:
1600
2398
delay -= time2 - time
1601
1602
sent_size = 0
1603
while sent_size < len(client.secret):
1604
try:
1605
sent = session.send(client.secret[sent_size:])
1606
except gnutls.errors.GNUTLSError as error:
1607
logger.warning("gnutls send failed")
1608
return
1609
logger.debug("Sent: %d, remaining: %d",
1610
sent, len(client.secret)
1611
- (sent_size + sent))
1612
sent_size += sent
1613
2399
2400
try:
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
2404
exc_info=error)
2405
return
2406
1614
2407
logger.info("Sending secret to %s", client.name)
1615
2408
# bump the timeout using extended_timeout
1616
client.checked_ok(client.extended_timeout)
2409
client.bump_timeout(client.extended_timeout)
1617
2410
if self.server.use_dbus:
1618
2411
# Emit D-Bus signal
1619
2412
client.GotSecret()
1620
2413
1621
2414
finally:
1622
2415
if approval_required:
1623
2416
client.approvals_pending -= 1
1624
2417
try:
1625
2418
session.bye()
1626
except gnutls.errors.GNUTLSError as error:
1627
logger.warning("GnuTLS bye failed")
1628
2419
except gnutls.Error as error:
2420
logger.warning("GnuTLS bye failed",
2421
exc_info=error)
2422
1629
2423
@staticmethod
1630
2424
def peer_certificate(session):
1631
"Return the peer's OpenPGP certificate as a bytestring"
1632
# If not an OpenPGP certificate...
1633
if (gnutls.library.functions
1634
.gnutls_certificate_type_get(session._c_object)
1635
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1636
# ...do the normal thing
1637
return session.peer_certificate
2425
"Return the peer's certificate as a bytestring"
2426
try:
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2428
gnutls.CTYPE_PEERS)
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2433
else:
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2438
valid_cert_types)
2439
# ...return invalid data
2440
return b""
1638
2441
list_size = ctypes.c_uint(1)
1639
cert_list = (gnutls.library.functions
1640
.gnutls_certificate_get_peers
2442
cert_list = (gnutls.certificate_get_peers
1641
2443
(session._c_object, ctypes.byref(list_size)))
1642
2444
if not bool(cert_list) and list_size.value != 0:
1643
raise gnutls.errors.GNUTLSError("error getting peer"
1644
" certificate")
2445
raise gnutls.Error("error getting peer certificate")
1645
2446
if list_size.value == 0:
1646
2447
return None
1647
2448
cert = cert_list[0]
1648
2449
return ctypes.string_at(cert.data, cert.size)
1649
2450
2451
@staticmethod
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2478
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2483
return hex_key_id
2484
1650
2485
@staticmethod
1651
2486
def fingerprint(openpgp):
1652
2487
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1653
2488
# New GnuTLS "datum" with the OpenPGP public key
1654
datum = (gnutls.library.types
1655
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1656
ctypes.POINTER
1657
(ctypes.c_ubyte)),
1658
ctypes.c_uint(len(openpgp))))
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
ctypes.c_uint(len(openpgp)))
1659
2493
# New empty GnuTLS certificate
1660
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1661
(gnutls.library.functions
1662
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1663
2496
# Import the OpenPGP public key into the certificate
1664
(gnutls.library.functions
1665
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1666
gnutls.library.constants
1667
.GNUTLS_OPENPGP_FMT_RAW))
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1668
2499
# Verify the self signature in the key
1669
2500
crtverify = ctypes.c_uint()
1670
(gnutls.library.functions
1671
.gnutls_openpgp_crt_verify_self(crt, 0,
1672
ctypes.byref(crtverify)))
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1673
2503
if crtverify.value != 0:
1674
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1675
raise (gnutls.errors.CertificateSecurityError
1676
("Verify failed"))
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1677
2507
# New buffer for the fingerprint
1678
2508
buf = ctypes.create_string_buffer(20)
1679
2509
buf_len = ctypes.c_size_t()
1680
2510
# Get the fingerprint from the certificate into the buffer
1681
(gnutls.library.functions
1682
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1683
ctypes.byref(buf_len)))
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1684
2513
# Deinit the certificate
1685
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2514
gnutls.openpgp_crt_deinit(crt)
1686
2515
# Convert the buffer to a Python bytestring
1687
2516
fpr = ctypes.string_at(buf, buf_len.value)
1688
2517
# Convert the bytestring to hexadecimal notation
1690
2519
return hex_fpr
1691
2520
1692
2521
1693
class MultiprocessingMixIn(object):
2522
class MultiprocessingMixIn:
1694
2523
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
1695
2525
def sub_process_main(self, request, address):
1696
2526
try:
1697
2527
self.finish_request(request, address)
1698
2528
except Exception:
1699
2529
self.handle_error(request, address)
1700
2530
self.close_request(request)
1701
2531
1702
2532
def process_request(self, request, address):
1703
2533
"""Start a new process to process the request."""
1704
proc = multiprocessing.Process(target = self.sub_process_main,
1705
args = (request,
1706
address))
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
1707
2536
proc.start()
1708
2537
return proc
1709
2538
1710
2539
1711
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1712
2541
""" adds a pipe to the MixIn """
2542
1713
2543
def process_request(self, request, client_address):
1714
2544
"""Overrides and wraps the original process_request().
1715
2545
1716
2546
This function creates a new pipe in self.pipe
1717
2547
"""
1718
2548
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1719
2549
1720
2550
proc = MultiprocessingMixIn.process_request(self, request,
1721
2551
client_address)
1722
2552
self.child_pipe.close()
1723
2553
self.add_pipe(parent_pipe, proc)
1724
2554
1725
2555
def add_pipe(self, parent_pipe, proc):
1726
2556
"""Dummy function; override as necessary"""
1727
raise NotImplementedError
2557
raise NotImplementedError()
1728
2558
1729
2559
1730
2560
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1731
socketserver.TCPServer, object):
2561
socketserver.TCPServer):
1732
2562
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1733
2563
1734
2564
Attributes:
1735
2565
enabled: Boolean; whether this server is activated yet
1736
2566
interface: None or a network interface name (string)
1737
2567
use_ipv6: Boolean; to use IPv6 or not
1738
2568
"""
2569
1739
2570
def __init__(self, server_address, RequestHandlerClass,
1740
interface=None, use_ipv6=True):
2571
interface=None,
2572
use_ipv6=True,
2573
socketfd=None):
2574
"""If socketfd is set, use that file descriptor instead of
2575
creating a new one with socket.socket().
2576
"""
1741
2577
self.interface = interface
1742
2578
if use_ipv6:
1743
2579
self.address_family = socket.AF_INET6
2580
if socketfd is not None:
2581
# Save the file descriptor
2582
self.socketfd = socketfd
2583
# Save the original socket.socket() function
2584
self.socket_socket = socket.socket
2585
2586
# To implement --socket, we monkey patch socket.socket.
2587
#
2588
# (When socketserver.TCPServer is a new-style class, we
2589
# could make self.socket into a property instead of monkey
2590
# patching socket.socket.)
2591
#
2592
# Create a one-time-only replacement for socket.socket()
2593
@functools.wraps(socket.socket)
2594
def socket_wrapper(*args, **kwargs):
2595
# Restore original function so subsequent calls are
2596
# not affected.
2597
socket.socket = self.socket_socket
2598
del self.socket_socket
2599
# This time only, return a new socket object from the
2600
# saved file descriptor.
2601
return socket.fromfd(self.socketfd, *args, **kwargs)
2602
# Replace socket.socket() function with wrapper
2603
socket.socket = socket_wrapper
2604
# The socketserver.TCPServer.__init__ will call
2605
# socket.socket(), which might be our replacement,
2606
# socket_wrapper(), if socketfd was set.
1744
2607
socketserver.TCPServer.__init__(self, server_address,
1745
2608
RequestHandlerClass)
2609
1746
2610
def server_bind(self):
1747
2611
"""This overrides the normal server_bind() function
1748
2612
to bind to an interface if one was specified, and also NOT to
1749
2613
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
1750
2615
if self.interface is not None:
1751
2616
if SO_BINDTODEVICE is None:
1752
logger.error("SO_BINDTODEVICE does not exist;"
1753
" cannot bind to interface %s",
1754
self.interface)
1755
else:
1756
try:
1757
self.socket.setsockopt(socket.SOL_SOCKET,
1758
SO_BINDTODEVICE,
1759
str(self.interface
1760
+ '\0'))
1761
except socket.error as error:
1762
if error[0] == errno.EPERM:
1763
logger.error("No permission to"
1764
" bind to interface %s",
1765
self.interface)
1766
elif error[0] == errno.ENOPROTOOPT:
1767
logger.error("SO_BINDTODEVICE not available;"
1768
" cannot bind to interface %s",
1769
self.interface)
1770
else:
1771
raise
2617
# Fall back to a hard-coded value which seems to be
2618
# common enough.
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2621
try:
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2632
self.interface)
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2636
else:
2637
raise
1772
2638
# Only bind(2) the socket if we really need to.
1773
2639
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
1774
2642
if not self.server_address[0]:
1775
2643
if self.address_family == socket.AF_INET6:
1776
any_address = "::" # in6addr_any
2644
any_address = "::" # in6addr_any
1777
2645
else:
1778
any_address = socket.INADDR_ANY
2646
any_address = "0.0.0.0" # INADDR_ANY
1779
2647
self.server_address = (any_address,
1780
2648
self.server_address[1])
1781
2649
elif not self.server_address[1]:
1782
self.server_address = (self.server_address[0],
1783
0)
2650
self.server_address = (self.server_address[0], 0)
1784
2651
# if self.interface:
1785
2652
# self.server_address = (self.server_address[0],
1786
2653
# 0, # port
1792
2659
1793
2660
class MandosServer(IPv6_TCPServer):
1794
2661
"""Mandos server.
1795
2662
1796
2663
Attributes:
1797
2664
clients: set of Client objects
1798
2665
gnutls_priority GnuTLS priority string
1799
2666
use_dbus: Boolean; to emit D-Bus signals or not
1800
1801
Assumes a gobject.MainLoop event loop.
2667
2668
Assumes a GLib.MainLoop event loop.
1802
2669
"""
2670
1803
2671
def __init__(self, server_address, RequestHandlerClass,
1804
interface=None, use_ipv6=True, clients=None,
1805
gnutls_priority=None, use_dbus=True):
2672
interface=None,
2673
use_ipv6=True,
2674
clients=None,
2675
gnutls_priority=None,
2676
use_dbus=True,
2677
socketfd=None):
1806
2678
self.enabled = False
1807
2679
self.clients = clients
1808
2680
if self.clients is None:
1811
2683
self.gnutls_priority = gnutls_priority
1812
2684
IPv6_TCPServer.__init__(self, server_address,
1813
2685
RequestHandlerClass,
1814
interface = interface,
1815
use_ipv6 = use_ipv6)
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
1816
2690
def server_activate(self):
1817
2691
if self.enabled:
1818
2692
return socketserver.TCPServer.server_activate(self)
1819
2693
1820
2694
def enable(self):
1821
2695
self.enabled = True
1822
2696
1823
2697
def add_pipe(self, parent_pipe, proc):
1824
2698
# Call "handle_ipc" for both data and EOF events
1825
gobject.io_add_watch(parent_pipe.fileno(),
1826
gobject.IO_IN | gobject.IO_HUP,
1827
functools.partial(self.handle_ipc,
1828
parent_pipe =
1829
parent_pipe,
1830
proc = proc))
1831
1832
def handle_ipc(self, source, condition, parent_pipe=None,
1833
proc = None, client_object=None):
1834
condition_names = {
1835
gobject.IO_IN: "IN", # There is data to read.
1836
gobject.IO_OUT: "OUT", # Data can be written (without
1837
# blocking).
1838
gobject.IO_PRI: "PRI", # There is urgent data to read.
1839
gobject.IO_ERR: "ERR", # Error condition.
1840
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1841
# broken, usually for pipes and
1842
# sockets).
1843
}
1844
conditions_string = ' | '.join(name
1845
for cond, name in
1846
condition_names.iteritems()
1847
if cond & condition)
2699
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2704
proc=proc))
2705
2706
def handle_ipc(self, source, condition,
2707
parent_pipe=None,
2708
proc=None,
2709
client_object=None):
1848
2710
# error, or the other end of multiprocessing.Pipe has closed
1849
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1850
2712
# Wait for other process to exit
1851
2713
proc.join()
1852
2714
return False
1853
2715
1854
2716
# Read a request from the child
1855
2717
request = parent_pipe.recv()
1856
2718
command = request[0]
1857
2719
1858
2720
if command == 'init':
1859
fpr = request[1]
1860
address = request[2]
1861
1862
for c in self.clients.itervalues():
1863
if c.fingerprint == fpr:
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2724
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2727
continue
2728
if key_id and c.key_id == key_id:
2729
client = c
2730
break
2731
if fpr and c.fingerprint == fpr:
1864
2732
client = c
1865
2733
break
1866
2734
else:
1867
logger.info("Client not found for fingerprint: %s, ad"
1868
"dress: %s", fpr, address)
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
1869
2737
if self.use_dbus:
1870
2738
# Emit D-Bus signal
1871
mandos_dbus_service.ClientNotFound(fpr,
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
1872
2740
address[0])
1873
2741
parent_pipe.send(False)
1874
2742
return False
1875
1876
gobject.io_add_watch(parent_pipe.fileno(),
1877
gobject.IO_IN | gobject.IO_HUP,
1878
functools.partial(self.handle_ipc,
1879
parent_pipe =
1880
parent_pipe,
1881
proc = proc,
1882
client_object =
1883
client))
2743
2744
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2749
proc=proc,
2750
client_object=client))
1884
2751
parent_pipe.send(True)
1885
2752
# remove the old hook in favor of the new above hook on
1886
2753
# same fileno
1889
2756
funcname = request[1]
1890
2757
args = request[2]
1891
2758
kwargs = request[3]
1892
2759
1893
2760
parent_pipe.send(('data', getattr(client_object,
1894
2761
funcname)(*args,
1895
**kwargs)))
1896
2762
**kwargs)))
2763
1897
2764
if command == 'getattr':
1898
2765
attrname = request[1]
1899
if callable(client_object.__getattribute__(attrname)):
1900
parent_pipe.send(('function',))
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
1901
2769
else:
1902
parent_pipe.send(('data', client_object
1903
.__getattribute__(attrname)))
1904
2770
parent_pipe.send((
2771
'data', client_object.__getattribute__(attrname)))
2772
1905
2773
if command == 'setattr':
1906
2774
attrname = request[1]
1907
2775
value = request[2]
1908
2776
setattr(client_object, attrname, value)
1909
2777
1910
2778
return True
1911
2779
1912
2780
2781
def rfc3339_duration_to_delta(duration):
2782
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2783
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2785
True
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2787
True
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2789
True
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2791
True
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2793
True
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2795
True
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2797
True
2798
"""
2799
2800
# Parsing an RFC 3339 duration with regular expressions is not
2801
# possible - there would have to be multiple places for the same
2802
# values, like seconds. The current code, while more esoteric, is
2803
# cleaner without depending on a parsing library. If Python had a
2804
# built-in library for parsing we would use it, but we'd like to
2805
# avoid excessive use of external libraries.
2806
2807
# New type for defining tokens, syntax, and semantics all-in-one
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"followers")) # Tokens valid after this token
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2816
token_second = Token(re.compile(r"(\d+)S"),
2817
datetime.timedelta(seconds=1),
2818
frozenset((token_end, )))
2819
token_minute = Token(re.compile(r"(\d+)M"),
2820
datetime.timedelta(minutes=1),
2821
frozenset((token_second, token_end)))
2822
token_hour = Token(re.compile(r"(\d+)H"),
2823
datetime.timedelta(hours=1),
2824
frozenset((token_minute, token_end)))
2825
token_time = Token(re.compile(r"T"),
2826
None,
2827
frozenset((token_hour, token_minute,
2828
token_second)))
2829
token_day = Token(re.compile(r"(\d+)D"),
2830
datetime.timedelta(days=1),
2831
frozenset((token_time, token_end)))
2832
token_month = Token(re.compile(r"(\d+)M"),
2833
datetime.timedelta(weeks=4),
2834
frozenset((token_day, token_end)))
2835
token_year = Token(re.compile(r"(\d+)Y"),
2836
datetime.timedelta(weeks=52),
2837
frozenset((token_month, token_end)))
2838
token_week = Token(re.compile(r"(\d+)W"),
2839
datetime.timedelta(weeks=1),
2840
frozenset((token_end, )))
2841
token_duration = Token(re.compile(r"P"), None,
2842
frozenset((token_year, token_month,
2843
token_day, token_time,
2844
token_week)))
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2848
found_token = None
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2853
# Loop until end token is found
2854
while found_token is not token_end:
2855
# Search for any currently valid tokens
2856
for token in followers:
2857
match = token.regexp.match(s)
2858
if match is not None:
2859
# Token found
2860
if token.value is not None:
2861
# Value found, parse digits
2862
factor = int(match.group(1), 10)
2863
# Add to value so far
2864
value += factor * token.value
2865
# Strip token from string
2866
s = token.regexp.sub("", s, 1)
2867
# Go to found token
2868
found_token = token
2869
# Set valid next tokens
2870
followers = found_token.followers
2871
break
2872
else:
2873
# No currently valid tokens were found
2874
raise ValueError("Invalid RFC 3339 duration: {!r}"
2875
.format(duration))
2876
# End token found
2877
return value
2878
2879
1913
2880
def string_to_delta(interval):
1914
2881
"""Parse a string and return a datetime.timedelta
1915
1916
>>> string_to_delta('7d')
1917
datetime.timedelta(7)
1918
>>> string_to_delta('60s')
1919
datetime.timedelta(0, 60)
1920
>>> string_to_delta('60m')
1921
datetime.timedelta(0, 3600)
1922
>>> string_to_delta('24h')
1923
datetime.timedelta(1)
1924
>>> string_to_delta('1w')
1925
datetime.timedelta(7)
1926
>>> string_to_delta('5m 30s')
1927
datetime.timedelta(0, 330)
2882
2883
>>> string_to_delta('7d') == datetime.timedelta(7)
2884
True
2885
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2886
True
2887
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2888
True
2889
>>> string_to_delta('24h') == datetime.timedelta(1)
2890
True
2891
>>> string_to_delta('1w') == datetime.timedelta(7)
2892
True
2893
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2894
True
1928
2895
"""
2896
2897
try:
2898
return rfc3339_duration_to_delta(interval)
2899
except ValueError:
2900
pass
2901
1929
2902
timevalue = datetime.timedelta(0)
1930
2903
for s in interval.split():
1931
2904
try:
1932
suffix = unicode(s[-1])
2905
suffix = s[-1]
1933
2906
value = int(s[:-1])
1934
2907
if suffix == "d":
1935
2908
delta = datetime.timedelta(value)
1942
2915
elif suffix == "w":
1943
2916
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1944
2917
else:
1945
raise ValueError("Unknown suffix %r" % suffix)
1946
except (ValueError, IndexError) as e:
2918
raise ValueError("Unknown suffix {!r}".format(suffix))
2919
except IndexError as e:
1947
2920
raise ValueError(*(e.args))
1948
2921
timevalue += delta
1949
2922
return timevalue
1950
2923
1951
2924
1952
def daemon(nochdir = False, noclose = False):
2925
def daemon(nochdir=False, noclose=False):
1953
2926
"""See daemon(3). Standard BSD Unix function.
1954
2927
1955
2928
This should really exist as os.daemon, but it doesn't (yet)."""
1956
2929
if os.fork():
1957
2930
sys.exit()
1962
2935
sys.exit()
1963
2936
if not noclose:
1964
2937
# Close all standard open file descriptors
1965
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2938
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1966
2939
if not stat.S_ISCHR(os.fstat(null).st_mode):
1967
2940
raise OSError(errno.ENODEV,
1968
"%s not a character device"
1969
% os.path.devnull)
2941
"{} not a character device"
2942
.format(os.devnull))
1970
2943
os.dup2(null, sys.stdin.fileno())
1971
2944
os.dup2(null, sys.stdout.fileno())
1972
2945
os.dup2(null, sys.stderr.fileno())
1975
2948
1976
2949
1977
2950
def main():
1978
2951
1979
2952
##################################################################
1980
2953
# Parsing of options, both command line and config file
1981
2954
1982
2955
parser = argparse.ArgumentParser()
1983
2956
parser.add_argument("-v", "--version", action="version",
1984
version = "%%(prog)s %s" % version,
2957
version="%(prog)s {}".format(version),
1985
2958
help="show version number and exit")
1986
2959
parser.add_argument("-i", "--interface", metavar="IF",
1987
2960
help="Bind to interface IF")
1993
2966
help="Run self-test")
1994
2967
parser.add_argument("--debug", action="store_true",
1995
2968
help="Debug mode; run in foreground and log"
1996
" to terminal")
2969
" to terminal", default=None)
1997
2970
parser.add_argument("--debuglevel", metavar="LEVEL",
1998
2971
help="Debug level for stdout output")
1999
2972
parser.add_argument("--priority", help="GnuTLS"
2006
2979
" files")
2007
2980
parser.add_argument("--no-dbus", action="store_false",
2008
2981
dest="use_dbus", help="Do not provide D-Bus"
2009
" system bus interface")
2982
" system bus interface", default=None)
2010
2983
parser.add_argument("--no-ipv6", action="store_false",
2011
dest="use_ipv6", help="Do not use IPv6")
2984
dest="use_ipv6", help="Do not use IPv6",
2985
default=None)
2012
2986
parser.add_argument("--no-restore", action="store_false",
2013
2987
dest="restore", help="Do not restore stored"
2014
" state")
2988
" state", default=None)
2989
parser.add_argument("--socket", type=int,
2990
help="Specify a file descriptor to a network"
2991
" socket to use instead of creating one")
2015
2992
parser.add_argument("--statedir", metavar="DIR",
2016
2993
help="Directory to save/restore state in")
2017
2994
parser.add_argument("--foreground", action="store_true",
2995
help="Run in foreground", default=None)
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2998
default=None)
2999
2018
3000
options = parser.parse_args()
2019
2020
if options.check:
2021
import doctest
2022
doctest.testmod()
2023
sys.exit()
2024
3001
2025
3002
# Default values for config file for server-global settings
2026
server_defaults = { "interface": "",
2027
"address": "",
2028
"port": "",
2029
"debug": "False",
2030
"priority":
2031
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2032
"servicename": "Mandos",
2033
"use_dbus": "True",
2034
"use_ipv6": "True",
2035
"debuglevel": "",
2036
"restore": "True",
2037
"statedir": "/var/lib/mandos"
2038
}
2039
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3006
else:
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3010
"address": "",
3011
"port": "",
3012
"debug": "False",
3013
"priority": priority,
3014
"servicename": "Mandos",
3015
"use_dbus": "True",
3016
"use_ipv6": "True",
3017
"debuglevel": "",
3018
"restore": "True",
3019
"socket": "",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
3022
"zeroconf": "True",
3023
}
3024
del priority
3025
2040
3026
# Parse config file for server-global settings
2041
server_config = configparser.SafeConfigParser(server_defaults)
3027
server_config = configparser.ConfigParser(server_defaults)
2042
3028
del server_defaults
2043
server_config.read(os.path.join(options.configdir,
2044
"mandos.conf"))
2045
# Convert the SafeConfigParser object to a dict
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2046
3031
server_settings = server_config.defaults()
2047
3032
# Use the appropriate methods on the non-string config options
2048
for option in ("debug", "use_dbus", "use_ipv6"):
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2049
3035
server_settings[option] = server_config.getboolean("DEFAULT",
2050
3036
option)
2051
3037
if server_settings["port"]:
2052
3038
server_settings["port"] = server_config.getint("DEFAULT",
2053
3039
"port")
3040
if server_settings["socket"]:
3041
server_settings["socket"] = server_config.getint("DEFAULT",
3042
"socket")
3043
# Later, stdin will, and stdout and stderr might, be dup'ed
3044
# over with an opened os.devnull. But we don't want this to
3045
# happen with a supplied network socket.
3046
if 0 <= server_settings["socket"] <= 2:
3047
server_settings["socket"] = os.dup(server_settings
3048
["socket"])
2054
3049
del server_config
2055
3050
2056
3051
# Override the settings from the config file with command line
2057
3052
# options, if set.
2058
3053
for option in ("interface", "address", "port", "debug",
2059
"priority", "servicename", "configdir",
2060
"use_dbus", "use_ipv6", "debuglevel", "restore",
2061
"statedir"):
3054
"priority", "servicename", "configdir", "use_dbus",
3055
"use_ipv6", "debuglevel", "restore", "statedir",
3056
"socket", "foreground", "zeroconf"):
2062
3057
value = getattr(options, option)
2063
3058
if value is not None:
2064
3059
server_settings[option] = value
2065
3060
del options
2066
3061
# Force all strings to be unicode
2067
3062
for option in server_settings.keys():
2068
if type(server_settings[option]) is str:
2069
server_settings[option] = unicode(server_settings[option])
3063
if isinstance(server_settings[option], bytes):
3064
server_settings[option] = (server_settings[option]
3065
.decode("utf-8"))
3066
# Force all boolean options to be boolean
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
3069
server_settings[option] = bool(server_settings[option])
3070
# Debug implies foreground
3071
if server_settings["debug"]:
3072
server_settings["foreground"] = True
2070
3073
# Now we have our good server settings in "server_settings"
2071
3074
2072
3075
##################################################################
2073
3076
3077
if (not server_settings["zeroconf"]
3078
and not (server_settings["port"]
3079
or server_settings["socket"] != "")):
3080
parser.error("Needs port or socket to work without Zeroconf")
3081
2074
3082
# For convenience
2075
3083
debug = server_settings["debug"]
2076
3084
debuglevel = server_settings["debuglevel"]
2078
3086
use_ipv6 = server_settings["use_ipv6"]
2079
3087
stored_state_path = os.path.join(server_settings["statedir"],
2080
3088
stored_state_file)
2081
3089
foreground = server_settings["foreground"]
3090
zeroconf = server_settings["zeroconf"]
3091
2082
3092
if debug:
2083
3093
initlogger(debug, logging.DEBUG)
2084
3094
else:
2087
3097
else:
2088
3098
level = getattr(logging, debuglevel.upper())
2089
3099
initlogger(debug, level)
2090
3100
2091
3101
if server_settings["servicename"] != "Mandos":
2092
syslogger.setFormatter(logging.Formatter
2093
('Mandos (%s) [%%(process)d]:'
2094
' %%(levelname)s: %%(message)s'
2095
% server_settings["servicename"]))
2096
3102
syslogger.setFormatter(
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
3104
' %(levelname)s: %(message)s'.format(
3105
server_settings["servicename"])))
3106
2097
3107
# Parse config file with clients
2098
client_config = configparser.SafeConfigParser(Client.client_defaults)
3108
client_config = configparser.ConfigParser(Client.client_defaults)
2099
3109
client_config.read(os.path.join(server_settings["configdir"],
2100
3110
"clients.conf"))
2101
3111
2102
3112
global mandos_dbus_service
2103
3113
mandos_dbus_service = None
2104
2105
tcp_server = MandosServer((server_settings["address"],
2106
server_settings["port"]),
2107
ClientHandler,
2108
interface=(server_settings["interface"]
2109
or None),
2110
use_ipv6=use_ipv6,
2111
gnutls_priority=
2112
server_settings["priority"],
2113
use_dbus=use_dbus)
2114
if not debug:
2115
pidfilename = "/var/run/mandos.pid"
2116
try:
2117
pidfile = open(pidfilename, "w")
2118
except IOError:
2119
logger.error("Could not open file %r", pidfilename)
2120
2121
try:
2122
uid = pwd.getpwnam("_mandos").pw_uid
2123
gid = pwd.getpwnam("_mandos").pw_gid
2124
except KeyError:
2125
try:
2126
uid = pwd.getpwnam("mandos").pw_uid
2127
gid = pwd.getpwnam("mandos").pw_gid
3114
3115
socketfd = None
3116
if server_settings["socket"] != "":
3117
socketfd = server_settings["socket"]
3118
tcp_server = MandosServer(
3119
(server_settings["address"], server_settings["port"]),
3120
ClientHandler,
3121
interface=(server_settings["interface"] or None),
3122
use_ipv6=use_ipv6,
3123
gnutls_priority=server_settings["priority"],
3124
use_dbus=use_dbus,
3125
socketfd=socketfd)
3126
if not foreground:
3127
pidfilename = "/run/mandos.pid"
3128
if not os.path.isdir("/run/."):
3129
pidfilename = "/var/run/mandos.pid"
3130
pidfile = None
3131
try:
3132
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3133
except IOError as e:
3134
logger.error("Could not open file %r", pidfilename,
3135
exc_info=e)
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
3140
try:
3141
uid = pwd.getpwnam(name).pw_uid
3142
gid = pwd.getpwnam(group).pw_gid
3143
break
2128
3144
except KeyError:
2129
try:
2130
uid = pwd.getpwnam("nobody").pw_uid
2131
gid = pwd.getpwnam("nobody").pw_gid
2132
except KeyError:
2133
uid = 65534
2134
gid = 65534
3145
continue
3146
else:
3147
uid = 65534
3148
gid = 65534
2135
3149
try:
2136
3150
os.setgid(gid)
2137
3151
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
2138
3155
except OSError as error:
2139
if error[0] != errno.EPERM:
2140
raise error
2141
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
3158
if error.errno != errno.EPERM:
3159
raise
3160
2142
3161
if debug:
2143
3162
# Enable all possible GnuTLS debugging
2144
3163
2145
3164
# "Use a log level over 10 to enable all debugging options."
2146
3165
# - GnuTLS manual
2147
gnutls.library.functions.gnutls_global_set_log_level(11)
2148
2149
@gnutls.library.types.gnutls_log_func
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
2150
3169
def debug_gnutls(level, string):
2151
3170
logger.debug("GnuTLS: %s", string[:-1])
2152
2153
(gnutls.library.functions
2154
.gnutls_global_set_log_function(debug_gnutls))
2155
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
2156
3174
# Redirect stdin so all checkers get /dev/null
2157
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2158
3176
os.dup2(null, sys.stdin.fileno())
2159
3177
if null > 2:
2160
3178
os.close(null)
2161
3179
2162
3180
# Need to fork before connecting to D-Bus
2163
if not debug:
3181
if not foreground:
2164
3182
# Close all input and output, do double fork, etc.
2165
3183
daemon()
2166
2167
gobject.threads_init()
2168
3184
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
3188
GLib.threads_init()
3189
2169
3190
global main_loop
2170
3191
# From the Avahi example code
2171
DBusGMainLoop(set_as_default=True )
2172
main_loop = gobject.MainLoop()
3192
DBusGMainLoop(set_as_default=True)
3193
main_loop = GLib.MainLoop()
2173
3194
bus = dbus.SystemBus()
2174
3195
# End of Avahi example code
2175
3196
if use_dbus:
2176
3197
try:
2177
3198
bus_name = dbus.service.BusName("se.recompile.Mandos",
2178
bus, do_not_queue=True)
2179
old_bus_name = (dbus.service.BusName
2180
("se.bsnet.fukt.Mandos", bus,
2181
do_not_queue=True))
2182
except dbus.exceptions.NameExistsException as e:
2183
logger.error(unicode(e) + ", disabling D-Bus")
3199
bus,
3200
do_not_queue=True)
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3203
do_not_queue=True)
3204
except dbus.exceptions.DBusException as e:
3205
logger.error("Disabling D-Bus:", exc_info=e)
2184
3206
use_dbus = False
2185
3207
server_settings["use_dbus"] = False
2186
3208
tcp_server.use_dbus = False
2187
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2188
service = AvahiServiceToSyslog(name =
2189
server_settings["servicename"],
2190
servicetype = "_mandos._tcp",
2191
protocol = protocol, bus = bus)
2192
if server_settings["interface"]:
2193
service.interface = (if_nametoindex
2194
(str(server_settings["interface"])))
2195
3209
if zeroconf:
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3214
protocol=protocol,
3215
bus=bus)
3216
if server_settings["interface"]:
3217
service.interface = if_nametoindex(
3218
server_settings["interface"].encode("utf-8"))
3219
2196
3220
global multiprocessing_manager
2197
3221
multiprocessing_manager = multiprocessing.Manager()
2198
3222
2199
3223
client_class = Client
2200
3224
if use_dbus:
2201
client_class = functools.partial(ClientDBusTransitional,
2202
bus = bus)
2203
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
2204
3227
client_settings = Client.config_parser(client_config)
2205
3228
old_client_settings = {}
2206
3229
clients_data = {}
2207
3230
3231
# This is used to redirect stdout and stderr for checker processes
3232
global wnull
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3234
# Only used if server is running in foreground but not in debug
3235
# mode
3236
if debug or not foreground:
3237
wnull.close()
3238
2208
3239
# Get client data and settings from last running state.
2209
3240
if server_settings["restore"]:
2210
3241
try:
2211
3242
with open(stored_state_path, "rb") as stored_state:
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3245
stored_state)
3246
else:
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3250
# clients_data
3251
# .keys()
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3261
for k, v in
3262
clients_data[key].items()}
3263
clients_data[key] = value
3264
# .client_structure
3265
value["client_structure"] = [
3266
(s.decode("utf-8")
3267
if isinstance(s, bytes)
3268
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3279
# .keys()
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3283
else key): value
3284
for key, value in
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3292
.decode("utf-8"))
2214
3293
os.remove(stored_state_path)
2215
3294
except IOError as e:
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
3295
if e.errno == errno.ENOENT:
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
3298
else:
3299
logger.critical("Could not load persistent state:",
3300
exc_info=e)
2219
3301
raise
2220
3302
except EOFError as e:
2221
3303
logger.warning("Could not load persistent state: "
2222
"EOFError: {0}".format(e))
2223
3304
"EOFError:",
3305
exc_info=e)
3306
2224
3307
with PGPEngine() as pgp:
2225
for client_name, client in clients_data.iteritems():
3308
for client_name, client in clients_data.items():
3309
# Skip removed clients
3310
if client_name not in client_settings:
3311
continue
3312
2226
3313
# Decide which value to use after restoring saved state.
2227
3314
# We have three different values: Old config file,
2228
3315
# new config file, and saved state.
2233
3320
# For each value in new config, check if it
2234
3321
# differs from the old config value (Except for
2235
3322
# the "secret" attribute)
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
3323
if (name != "secret"
3324
and (value !=
3325
old_client_settings[client_name][name])):
2239
3326
client[name] = value
2240
3327
except KeyError:
2241
3328
pass
2242
3329
2243
3330
# Clients who has passed its expire date can still be
2244
# enabled if its last checker was successful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
3331
# enabled if its last checker was successful. A Client
3332
# whose checker succeeded before we stored its state is
3333
# assumed to have successfully run all checkers during
3334
# downtime.
2247
3335
if client["enabled"]:
2248
3336
if datetime.datetime.utcnow() >= client["expires"]:
2249
3337
if not client["last_checked_ok"]:
2250
3338
logger.warning(
2251
"disabling client {0} - Client never "
2252
"performed a successfull checker"
2253
.format(client["name"]))
3339
"disabling client {} - Client never "
3340
"performed a successful checker".format(
3341
client_name))
2254
3342
client["enabled"] = False
2255
3343
elif client["last_checker_status"] != 0:
2256
3344
logger.warning(
2257
"disabling client {0} - Client "
2258
"last checker failed with error code {1}"
2259
.format(client["name"],
2260
client["last_checker_status"]))
3345
"disabling client {} - Client last"
3346
" checker failed with error code"
3347
" {}".format(
3348
client_name,
3349
client["last_checker_status"]))
2261
3350
client["enabled"] = False
2262
3351
else:
2263
client["expires"] = (datetime.datetime
2264
.utcnow()
2265
+ client["timeout"])
2266
3352
client["expires"] = (
3353
datetime.datetime.utcnow()
3354
+ client["timeout"])
3355
logger.debug("Last checker succeeded,"
3356
" keeping {} enabled".format(
3357
client_name))
2267
3358
try:
2268
client["secret"] = (
2269
pgp.decrypt(client["encrypted_secret"],
2270
client_settings[client_name]
2271
["secret"]))
3359
client["secret"] = pgp.decrypt(
3360
client["encrypted_secret"],
3361
client_settings[client_name]["secret"])
2272
3362
except PGPError:
2273
3363
# If decryption fails, we use secret from new settings
2274
logger.debug("Failed to decrypt {0} old secret"
2275
.format(client_name))
2276
client["secret"] = (
2277
client_settings[client_name]["secret"])
3364
logger.debug("Failed to decrypt {} old secret".format(
3365
client_name))
3366
client["secret"] = (client_settings[client_name]
3367
["secret"])
2278
3368
2279
2280
3369
# Add/remove clients based on new changes made to config
2281
for client_name in set(old_client_settings) - set(client_settings):
3370
for client_name in (set(old_client_settings)
3371
- set(client_settings)):
2282
3372
del clients_data[client_name]
2283
for client_name in set(client_settings) - set(old_client_settings):
3373
for client_name in (set(client_settings)
3374
- set(old_client_settings)):
2284
3375
clients_data[client_name] = client_settings[client_name]
2285
3376
2286
# Create clients all clients
2287
for client_name, client in clients_data.iteritems():
3377
# Create all client objects
3378
for client_name, client in clients_data.items():
2288
3379
tcp_server.clients[client_name] = client_class(
2289
name = client_name, settings = client)
2290
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
2291
3384
if not tcp_server.clients:
2292
3385
logger.warning("No clients defined")
2293
2294
if not debug:
2295
try:
2296
with pidfile:
2297
pid = os.getpid()
2298
pidfile.write(str(pid) + "\n".encode("utf-8"))
2299
del pidfile
2300
except IOError:
2301
logger.error("Could not write to file %r with PID %d",
2302
pidfilename, pid)
2303
except NameError:
2304
# "pidfile" was never created
2305
pass
3386
3387
if not foreground:
3388
if pidfile is not None:
3389
pid = os.getpid()
3390
try:
3391
with pidfile:
3392
print(pid, file=pidfile)
3393
except IOError:
3394
logger.error("Could not write to file %r with PID %d",
3395
pidfilename, pid)
3396
del pidfile
2306
3397
del pidfilename
2307
signal.signal(signal.SIGINT, signal.SIG_IGN)
2308
2309
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2310
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2311
3398
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
3402
2312
3403
if use_dbus:
2313
class MandosDBusService(dbus.service.Object):
3404
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2314
3408
"""A D-Bus proxy object"""
3409
2315
3410
def __init__(self):
2316
3411
dbus.service.Object.__init__(self, bus, "/")
3412
2317
3413
_interface = "se.recompile.Mandos"
2318
3414
2319
3415
@dbus.service.signal(_interface, signature="o")
2320
3416
def ClientAdded(self, objpath):
2321
3417
"D-Bus signal"
2322
3418
pass
2323
3419
2324
3420
@dbus.service.signal(_interface, signature="ss")
2325
def ClientNotFound(self, fingerprint, address):
3421
def ClientNotFound(self, key_id, address):
2326
3422
"D-Bus signal"
2327
3423
pass
2328
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2329
3427
@dbus.service.signal(_interface, signature="os")
2330
3428
def ClientRemoved(self, objpath, name):
2331
3429
"D-Bus signal"
2332
3430
pass
2333
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2334
3434
@dbus.service.method(_interface, out_signature="ao")
2335
3435
def GetAllClients(self):
2336
3436
"D-Bus method"
2337
return dbus.Array(c.dbus_object_path
2338
for c in
2339
tcp_server.clients.itervalues())
2340
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3439
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
"true"})
2341
3442
@dbus.service.method(_interface,
2342
3443
out_signature="a{oa{sv}}")
2343
3444
def GetAllClientsWithProperties(self):
2344
3445
"D-Bus method"
2345
3446
return dbus.Dictionary(
2346
((c.dbus_object_path, c.GetAll(""))
2347
for c in tcp_server.clients.itervalues()),
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2348
3450
signature="oa{sv}")
2349
3451
2350
3452
@dbus.service.method(_interface, in_signature="o")
2351
3453
def RemoveClient(self, object_path):
2352
3454
"D-Bus method"
2353
for c in tcp_server.clients.itervalues():
3455
for c in tcp_server.clients.values():
2354
3456
if c.dbus_object_path == object_path:
2355
3457
del tcp_server.clients[c.name]
2356
3458
c.remove_from_connection()
2357
# Don't signal anything except ClientRemoved
3459
# Don't signal the disabling
2358
3460
c.disable(quiet=True)
2359
# Emit D-Bus signal
2360
self.ClientRemoved(object_path, c.name)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2361
3463
return
2362
3464
raise KeyError(object_path)
2363
3465
2364
3466
del _interface
2365
2366
class MandosDBusServiceTransitional(MandosDBusService):
2367
__metaclass__ = AlternateDBusNamesMetaclass
2368
mandos_dbus_service = MandosDBusServiceTransitional()
2369
3467
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3471
"""D-Bus method"""
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3474
dbus.Dictionary(
3475
{interface: client.GetAll(interface)
3476
for interface in
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3479
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3482
if use_dbus:
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()}))
3490
# Old signal
3491
self.ClientAdded(client.dbus_object_path)
3492
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3495
if use_dbus:
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3500
# Old signal
3501
self.ClientRemoved(client.dbus_object_path,
3502
client.name)
3503
3504
mandos_dbus_service = MandosDBusService()
3505
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3509
wn = wnull
3510
2370
3511
def cleanup():
2371
3512
"Cleanup function; run on exit"
2372
service.cleanup()
2373
2374
multiprocessing.active_children()
3513
if zeroconf:
3514
service.cleanup()
3515
3516
mp.active_children()
3517
wn.close()
2375
3518
if not (tcp_server.clients or client_settings):
2376
3519
return
2377
3520
2378
3521
# Store client before exiting. Secrets are encrypted with key
2379
3522
# based on what config file has. If config file is
2380
3523
# removed/edited, old secret will thus be unrecovable.
2381
3524
clients = {}
2382
3525
with PGPEngine() as pgp:
2383
for client in tcp_server.clients.itervalues():
3526
for client in tcp_server.clients.values():
2384
3527
key = client_settings[client.name]["secret"]
2385
3528
client.encrypted_secret = pgp.encrypt(client.secret,
2386
3529
key)
2387
3530
client_dict = {}
2388
3531
2389
3532
# A list of attributes that can not be pickled
2390
3533
# + secret.
2391
exclude = set(("bus", "changedstate", "secret",
2392
"checker"))
2393
for name, typ in (inspect.getmembers
2394
(dbus.service.Object)):
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
3537
.Object):
2395
3538
exclude.add(name)
2396
3539
2397
3540
client_dict["encrypted_secret"] = (client
2398
3541
.encrypted_secret)
2399
3542
for attr in client.client_structure:
2400
3543
if attr not in exclude:
2401
3544
client_dict[attr] = getattr(client, attr)
2402
3545
2403
3546
clients[client.name] = client_dict
2404
3547
del client_settings[client.name]["secret"]
2405
3548
2406
3549
try:
2407
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2408
prefix="clients-",
2409
dir=os.path.dirname
2410
(stored_state_path))
2411
with os.fdopen(tempfd, "wb") as stored_state:
2412
pickle.dump((clients, client_settings), stored_state)
3550
with tempfile.NamedTemporaryFile(
3551
mode='wb',
3552
suffix=".pickle",
3553
prefix='clients-',
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3557
protocol=2)
3558
tempname = stored_state.name
2413
3559
os.rename(tempname, stored_state_path)
2414
3560
except (IOError, OSError) as e:
2415
logger.warning("Could not save persistent state: {0}"
2416
.format(e))
2417
3561
if not debug:
2418
3562
try:
2419
3563
os.remove(tempname)
2420
3564
except NameError:
2421
3565
pass
2422
if e.errno not in set((errno.ENOENT, errno.EACCES,
2423
errno.EEXIST)):
2424
raise e
2425
3566
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3567
logger.warning("Could not save persistent state: {}"
3568
.format(os.strerror(e.errno)))
3569
else:
3570
logger.warning("Could not save persistent state:",
3571
exc_info=e)
3572
raise
3573
2426
3574
# Delete all clients, and settings from config
2427
3575
while tcp_server.clients:
2428
3576
name, client = tcp_server.clients.popitem()
2429
3577
if use_dbus:
2430
3578
client.remove_from_connection()
2431
# Don't signal anything except ClientRemoved
3579
# Don't signal the disabling
2432
3580
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
2433
3582
if use_dbus:
2434
# Emit D-Bus signal
2435
mandos_dbus_service.ClientRemoved(client
2436
.dbus_object_path,
2437
client.name)
3583
mandos_dbus_service.client_removed_signal(client)
2438
3584
client_settings.clear()
2439
3585
2440
3586
atexit.register(cleanup)
2441
2442
for client in tcp_server.clients.itervalues():
3587
3588
for client in tcp_server.clients.values():
2443
3589
if use_dbus:
2444
# Emit D-Bus signal
2445
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
2446
3592
# Need to initiate checking of clients
2447
3593
if client.enabled:
2448
3594
client.init_checker()
2449
3595
2450
3596
tcp_server.enable()
2451
3597
tcp_server.server_activate()
2452
3598
2453
3599
# Find out what port we got
2454
service.port = tcp_server.socket.getsockname()[1]
3600
if zeroconf:
3601
service.port = tcp_server.socket.getsockname()[1]
2455
3602
if use_ipv6:
2456
3603
logger.info("Now listening on address %r, port %d,"
2457
" flowinfo %d, scope_id %d"
2458
% tcp_server.socket.getsockname())
3604
" flowinfo %d, scope_id %d",
3605
*tcp_server.socket.getsockname())
2459
3606
else: # IPv4
2460
logger.info("Now listening on address %r, port %d"
2461
% tcp_server.socket.getsockname())
2462
2463
#service.interface = tcp_server.socket.getsockname()[3]
2464
3607
logger.info("Now listening on address %r, port %d",
3608
*tcp_server.socket.getsockname())
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2465
3612
try:
2466
# From the Avahi example code
2467
try:
2468
service.activate()
2469
except dbus.exceptions.DBusException as error:
2470
logger.critical("DBusException: %s", error)
2471
cleanup()
2472
sys.exit(1)
2473
# End of Avahi example code
2474
2475
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2476
lambda *args, **kwargs:
2477
(tcp_server.handle_request
2478
(*args[2:], **kwargs) or True))
2479
3613
if zeroconf:
3614
# From the Avahi example code
3615
try:
3616
service.activate()
3617
except dbus.exceptions.DBusException as error:
3618
logger.critical("D-Bus Exception", exc_info=error)
3619
cleanup()
3620
sys.exit(1)
3621
# End of Avahi example code
3622
3623
GLib.io_add_watch(
3624
GLib.IOChannel.unix_new(tcp_server.fileno()),
3625
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3626
lambda *args, **kwargs: (tcp_server.handle_request
3627
(*args[2:], **kwargs) or True))
3628
2480
3629
logger.debug("Starting main loop")
2481
3630
main_loop.run()
2482
3631
except AvahiError as error:
2483
logger.critical("AvahiError: %s", error)
3632
logger.critical("Avahi Error", exc_info=error)
2484
3633
cleanup()
2485
3634
sys.exit(1)
2486
3635
except KeyboardInterrupt:
2491
3640
# Must run before the D-Bus bus name gets deregistered
2492
3641
cleanup()
2493
3642
3643
3644
def should_only_run_tests():
3645
parser = argparse.ArgumentParser(add_help=False)
3646
parser.add_argument("--check", action='store_true')
3647
args, unknown_args = parser.parse_known_args()
3648
run_tests = args.check
3649
if run_tests:
3650
# Remove --check argument from sys.argv
3651
sys.argv[1:] = unknown_args
3652
return run_tests
3653
3654
# Add all tests from doctest strings
3655
def load_tests(loader, tests, none):
3656
import doctest
3657
tests.addTests(doctest.DocTestSuite())
3658
return tests
3659
2494
3660
if __name__ == '__main__':
2495
main()
3661
try:
3662
if should_only_run_tests():
3663
# Call using ./mandos --check [--verbose]
3664
unittest.main()
3665
else:
3666
main()
3667
finally:
3668
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0