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- Committer: Teddy Hogeborn
- Date: 2009-02-07 03:38:17 UTC
- mto: (24.1.133 mandos) (237.4.2 mandos-pipe-ipc) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: teddy@fukt.bsnet.se-20090207033817-aotdjeibhz3sa4lr
* plugin-runner.c (main): If debugging, print name of failed plugins.
- files modified:
- INSTALL
added
removed
mandos
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
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
12
12
#
13
13
# Everything else is
14
14
# Copyright © 2008,2009 Teddy Hogeborn
33
33
34
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from __future__ import division, with_statement, absolute_import
35
35
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import SocketServer as socketserver
36
import SocketServer
37
37
import socket
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38
import optparse
39
39
import datetime
44
44
import gnutls.library.functions
45
45
import gnutls.library.constants
46
46
import gnutls.library.types
47
import ConfigParser as configparser
47
import ConfigParser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
52
53
import subprocess
53
54
import atexit
54
55
import stat
56
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import logging.handlers
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58
import pwd
58
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from contextlib import closing
59
import struct
60
import fcntl
61
import functools
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60
63
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import dbus
64
62
import dbus.service
68
66
import ctypes
69
67
import ctypes.util
70
68
71
try:
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
73
except AttributeError:
74
try:
75
from IN import SO_BINDTODEVICE
76
except ImportError:
77
# From /usr/include/asm/socket.h
78
SO_BINDTODEVICE = 25
79
80
81
version = "1.0.8"
82
83
logger = logging.Logger(u'mandos')
69
version = "1.0.5"
70
71
logger = logging.Logger('mandos')
84
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syslogger = (logging.handlers.SysLogHandler
85
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
86
74
address = "/dev/log"))
87
75
syslogger.setFormatter(logging.Formatter
88
(u'Mandos [%(process)d]: %(levelname)s:'
89
u' %(message)s'))
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
90
78
logger.addHandler(syslogger)
91
79
92
80
console = logging.StreamHandler()
93
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
94
u' %(levelname)s:'
95
u' %(message)s'))
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
96
83
logger.addHandler(console)
97
84
98
85
class AvahiError(Exception):
111
98
112
99
class AvahiService(object):
113
100
"""An Avahi (Zeroconf) service.
114
115
101
Attributes:
116
102
interface: integer; avahi.IF_UNSPEC or an interface index.
117
103
Used to optionally bind to the specified interface.
118
name: string; Example: u'Mandos'
119
type: string; Example: u'_mandos._tcp'.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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106
See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
125
111
max_renames: integer; maximum number of renames
126
112
rename_count: integer; counter so we only rename after collisions
127
113
a sensible number of times
128
group: D-Bus Entry Group
129
server: D-Bus Server
130
114
"""
131
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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116
servicetype = None, port = None, TXT = None,
133
domain = u"", host = u"", max_renames = 32768,
134
protocol = avahi.PROTO_UNSPEC, bus = None):
117
domain = "", host = "", max_renames = 32768):
135
118
self.interface = interface
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119
self.name = name
137
120
self.type = servicetype
141
124
self.host = host
142
125
self.rename_count = 0
143
126
self.max_renames = max_renames
144
self.protocol = protocol
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self.group = None # our entry group
146
self.server = None
147
self.bus = bus
148
127
def rename(self):
149
128
"""Derived from the Avahi example code"""
150
129
if self.rename_count >= self.max_renames:
152
131
u" after %i retries, exiting.",
153
132
self.rename_count)
154
133
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
134
self.name = server.GetAlternativeServiceName(self.name)
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135
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
136
str(self.name))
158
137
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
138
('Mandos (%s): %%(levelname)s:'
139
' %%(message)s' % self.name))
162
140
self.remove()
163
141
self.add()
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142
self.rename_count += 1
165
143
def remove(self):
166
144
"""Derived from the Avahi example code"""
167
if self.group is not None:
168
self.group.Reset()
145
if group is not None:
146
group.Reset()
169
147
def add(self):
170
148
"""Derived from the Avahi example code"""
171
if self.group is None:
172
self.group = dbus.Interface(
173
self.bus.get_object(avahi.DBUS_NAME,
174
self.server.EntryGroupNew()),
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
149
global group
150
if group is None:
151
group = dbus.Interface(bus.get_object
152
(avahi.DBUS_NAME,
153
server.EntryGroupNew()),
154
avahi.DBUS_INTERFACE_ENTRY_GROUP)
155
group.connect_to_signal('StateChanged',
156
entry_group_state_changed)
178
157
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
179
self.name, self.type)
180
self.group.AddService(
181
self.interface,
182
self.protocol,
183
dbus.UInt32(0), # flags
184
self.name, self.type,
185
self.domain, self.host,
186
dbus.UInt16(self.port),
187
avahi.string_array_to_txt_array(self.TXT))
188
self.group.Commit()
189
def entry_group_state_changed(self, state, error):
190
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
192
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
195
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
197
self.rename()
198
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
200
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
203
def cleanup(self):
204
"""Derived from the Avahi example code"""
205
if self.group is not None:
206
self.group.Free()
207
self.group = None
208
def server_state_changed(self, state):
209
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
213
elif state == avahi.SERVER_RUNNING:
214
self.add()
215
def activate(self):
216
"""Derived from the Avahi example code"""
217
if self.server is None:
218
self.server = dbus.Interface(
219
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
221
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
224
self.server_state_changed(self.server.GetState())
225
226
227
class Client(object):
158
service.name, service.type)
159
group.AddService(
160
self.interface, # interface
161
avahi.PROTO_INET6, # protocol
162
dbus.UInt32(0), # flags
163
self.name, self.type,
164
self.domain, self.host,
165
dbus.UInt16(self.port),
166
avahi.string_array_to_txt_array(self.TXT))
167
group.Commit()
168
169
# From the Avahi example code:
170
group = None # our entry group
171
# End of Avahi example code
172
173
174
def _datetime_to_dbus(dt, variant_level=0):
175
"""Convert a UTC datetime.datetime() to a D-Bus type."""
176
return dbus.String(dt.isoformat(), variant_level=variant_level)
177
178
179
class Client(dbus.service.Object):
228
180
"""A representation of a client host served by this server.
229
230
181
Attributes:
231
182
name: string; from the config file, used in log messages and
232
183
D-Bus identifiers
252
203
client lives. %() expansions are done at
253
204
runtime with vars(self) as dict, so that for
254
205
instance %(name)s can be used in the command.
255
current_checker_command: string; current running checker_command
206
use_dbus: bool(); Whether to provide D-Bus interface and signals
207
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
256
208
"""
257
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
264
265
209
def timeout_milliseconds(self):
266
210
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
211
return ((self.timeout.days * 24 * 60 * 60 * 1000)
212
+ (self.timeout.seconds * 1000)
213
+ (self.timeout.microseconds // 1000))
268
214
269
215
def interval_milliseconds(self):
270
216
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
217
return ((self.interval.days * 24 * 60 * 60 * 1000)
218
+ (self.interval.seconds * 1000)
219
+ (self.interval.microseconds // 1000))
272
220
273
def __init__(self, name = None, disable_hook=None, config=None):
221
def __init__(self, name = None, disable_hook=None, config=None,
222
use_dbus=True):
274
223
"""Note: the 'checker' key in 'config' sets the
275
224
'checker_command' attribute and *not* the 'checker'
276
225
attribute."""
278
227
if config is None:
279
228
config = {}
280
229
logger.debug(u"Creating client %r", self.name)
230
self.use_dbus = False # During __init__
281
231
# Uppercase and remove spaces from fingerprint for later
282
232
# comparison purposes with return value from the fingerprint()
283
233
# function
284
self.fingerprint = (config[u"fingerprint"].upper()
234
self.fingerprint = (config["fingerprint"].upper()
285
235
.replace(u" ", u""))
286
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
290
240
with closing(open(os.path.expanduser
291
241
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
242
(config["secfile"])))) as secfile:
293
243
self.secret = secfile.read()
294
244
else:
295
245
raise TypeError(u"No secret or secfile for client %s"
296
246
% self.name)
297
self.host = config.get(u"host", u"")
247
self.host = config.get("host", "")
298
248
self.created = datetime.datetime.utcnow()
299
249
self.enabled = False
300
250
self.last_enabled = None
301
251
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
304
254
self.disable_hook = disable_hook
305
255
self.checker = None
306
256
self.checker_initiator_tag = None
307
257
self.disable_initiator_tag = None
308
258
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
310
self.current_checker_command = None
259
self.checker_command = config["checker"]
311
260
self.last_connect = None
261
# Only now, when this client is initialized, can it show up on
262
# the D-Bus
263
self.use_dbus = use_dbus
264
if self.use_dbus:
265
self.dbus_object_path = (dbus.ObjectPath
266
("/clients/"
267
+ self.name.replace(".", "_")))
268
dbus.service.Object.__init__(self, bus,
269
self.dbus_object_path)
312
270
313
271
def enable(self):
314
272
"""Start this client's checker and timeout hooks"""
325
283
(self.timeout_milliseconds(),
326
284
self.disable))
327
285
self.enabled = True
286
if self.use_dbus:
287
# Emit D-Bus signals
288
self.PropertyChanged(dbus.String(u"enabled"),
289
dbus.Boolean(True, variant_level=1))
290
self.PropertyChanged(dbus.String(u"last_enabled"),
291
(_datetime_to_dbus(self.last_enabled,
292
variant_level=1)))
328
293
329
294
def disable(self):
330
295
"""Disable this client."""
331
296
if not getattr(self, "enabled", False):
332
297
return False
333
298
logger.info(u"Disabling client %s", self.name)
334
if getattr(self, u"disable_initiator_tag", False):
299
if getattr(self, "disable_initiator_tag", False):
335
300
gobject.source_remove(self.disable_initiator_tag)
336
301
self.disable_initiator_tag = None
337
if getattr(self, u"checker_initiator_tag", False):
302
if getattr(self, "checker_initiator_tag", False):
338
303
gobject.source_remove(self.checker_initiator_tag)
339
304
self.checker_initiator_tag = None
340
305
self.stop_checker()
341
306
if self.disable_hook:
342
307
self.disable_hook(self)
343
308
self.enabled = False
309
if self.use_dbus:
310
# Emit D-Bus signal
311
self.PropertyChanged(dbus.String(u"enabled"),
312
dbus.Boolean(False, variant_level=1))
344
313
# Do not run this again if called by a gobject.timeout_add
345
314
return False
346
315
352
321
"""The checker has completed, so take appropriate actions."""
353
322
self.checker_callback_tag = None
354
323
self.checker = None
324
if self.use_dbus:
325
# Emit D-Bus signal
326
self.PropertyChanged(dbus.String(u"checker_running"),
327
dbus.Boolean(False, variant_level=1))
355
328
if os.WIFEXITED(condition):
356
329
exitstatus = os.WEXITSTATUS(condition)
357
330
if exitstatus == 0:
361
334
else:
362
335
logger.info(u"Checker for %(name)s failed",
363
336
vars(self))
337
if self.use_dbus:
338
# Emit D-Bus signal
339
self.CheckerCompleted(dbus.Int16(exitstatus),
340
dbus.Int64(condition),
341
dbus.String(command))
364
342
else:
365
343
logger.warning(u"Checker for %(name)s crashed?",
366
344
vars(self))
345
if self.use_dbus:
346
# Emit D-Bus signal
347
self.CheckerCompleted(dbus.Int16(-1),
348
dbus.Int64(condition),
349
dbus.String(command))
367
350
368
351
def checked_ok(self):
369
352
"""Bump up the timeout for this client.
370
371
353
This should only be called when the client has been seen,
372
354
alive and well.
373
355
"""
376
358
self.disable_initiator_tag = (gobject.timeout_add
377
359
(self.timeout_milliseconds(),
378
360
self.disable))
361
if self.use_dbus:
362
# Emit D-Bus signal
363
self.PropertyChanged(
364
dbus.String(u"last_checked_ok"),
365
(_datetime_to_dbus(self.last_checked_ok,
366
variant_level=1)))
379
367
380
368
def start_checker(self):
381
369
"""Start a new checker subprocess if one is not running.
382
383
370
If a checker already exists, leave it running and do
384
371
nothing."""
385
372
# The reason for not killing a running checker is that if we
390
377
# checkers alone, the checker would have to take more time
391
378
# than 'timeout' for the client to be declared invalid, which
392
379
# is as it should be.
393
394
# If a checker exists, make sure it is not a zombie
395
if self.checker is not None:
396
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
397
if pid:
398
logger.warning(u"Checker was a zombie")
399
gobject.source_remove(self.checker_callback_tag)
400
self.checker_callback(pid, status,
401
self.current_checker_command)
402
# Start a new checker if needed
403
380
if self.checker is None:
404
381
try:
405
382
# In case checker_command has exactly one % operator
406
383
command = self.checker_command % self.host
407
384
except TypeError:
408
385
# Escape attributes for the shell
409
escaped_attrs = dict((key,
410
re.escape(unicode(str(val),
411
errors=
412
u'replace')))
386
escaped_attrs = dict((key, re.escape(str(val)))
413
387
for key, val in
414
388
vars(self).iteritems())
415
389
try:
418
392
logger.error(u'Could not format string "%s":'
419
393
u' %s', self.checker_command, error)
420
394
return True # Try again later
421
self.current_checker_command = command
422
395
try:
423
396
logger.info(u"Starting checker %r for %s",
424
397
command, self.name)
428
401
# always replaced by /dev/null.)
429
402
self.checker = subprocess.Popen(command,
430
403
close_fds=True,
431
shell=True, cwd=u"/")
404
shell=True, cwd="/")
405
if self.use_dbus:
406
# Emit D-Bus signal
407
self.CheckerStarted(command)
408
self.PropertyChanged(
409
dbus.String("checker_running"),
410
dbus.Boolean(True, variant_level=1))
432
411
self.checker_callback_tag = (gobject.child_watch_add
433
412
(self.checker.pid,
434
413
self.checker_callback,
435
414
data=command))
436
# The checker may have completed before the gobject
437
# watch was added. Check for this.
438
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
439
if pid:
440
gobject.source_remove(self.checker_callback_tag)
441
self.checker_callback(pid, status, command)
442
415
except OSError, error:
443
416
logger.error(u"Failed to start subprocess: %s",
444
417
error)
450
423
if self.checker_callback_tag:
451
424
gobject.source_remove(self.checker_callback_tag)
452
425
self.checker_callback_tag = None
453
if getattr(self, u"checker", None) is None:
426
if getattr(self, "checker", None) is None:
454
427
return
455
428
logger.debug(u"Stopping checker for %(name)s", vars(self))
456
429
try:
462
435
if error.errno != errno.ESRCH: # No such process
463
436
raise
464
437
self.checker = None
438
if self.use_dbus:
439
self.PropertyChanged(dbus.String(u"checker_running"),
440
dbus.Boolean(False, variant_level=1))
465
441
466
442
def still_valid(self):
467
443
"""Has the timeout not yet passed for this client?"""
468
if not getattr(self, u"enabled", False):
444
if not getattr(self, "enabled", False):
469
445
return False
470
446
now = datetime.datetime.utcnow()
471
447
if self.last_checked_ok is None:
472
448
return now < (self.created + self.timeout)
473
449
else:
474
450
return now < (self.last_checked_ok + self.timeout)
475
476
477
class ClientDBus(Client, dbus.service.Object):
478
"""A Client class using D-Bus
479
480
Attributes:
481
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
482
"""
483
# dbus.service.Object doesn't use super(), so we can't either.
484
485
def __init__(self, bus = None, *args, **kwargs):
486
self.bus = bus
487
Client.__init__(self, *args, **kwargs)
488
# Only now, when this client is initialized, can it show up on
489
# the D-Bus
490
self.dbus_object_path = (dbus.ObjectPath
491
(u"/clients/"
492
+ self.name.replace(u".", u"_")))
493
dbus.service.Object.__init__(self, self.bus,
494
self.dbus_object_path)
495
496
@staticmethod
497
def _datetime_to_dbus(dt, variant_level=0):
498
"""Convert a UTC datetime.datetime() to a D-Bus type."""
499
return dbus.String(dt.isoformat(),
500
variant_level=variant_level)
501
502
def enable(self):
503
oldstate = getattr(self, u"enabled", False)
504
r = Client.enable(self)
505
if oldstate != self.enabled:
506
# Emit D-Bus signals
507
self.PropertyChanged(dbus.String(u"enabled"),
508
dbus.Boolean(True, variant_level=1))
509
self.PropertyChanged(
510
dbus.String(u"last_enabled"),
511
self._datetime_to_dbus(self.last_enabled,
512
variant_level=1))
513
return r
514
515
def disable(self, signal = True):
516
oldstate = getattr(self, u"enabled", False)
517
r = Client.disable(self)
518
if signal and oldstate != self.enabled:
519
# Emit D-Bus signal
520
self.PropertyChanged(dbus.String(u"enabled"),
521
dbus.Boolean(False, variant_level=1))
522
return r
523
524
def __del__(self, *args, **kwargs):
525
try:
526
self.remove_from_connection()
527
except LookupError:
528
pass
529
if hasattr(dbus.service.Object, u"__del__"):
530
dbus.service.Object.__del__(self, *args, **kwargs)
531
Client.__del__(self, *args, **kwargs)
532
533
def checker_callback(self, pid, condition, command,
534
*args, **kwargs):
535
self.checker_callback_tag = None
536
self.checker = None
537
# Emit D-Bus signal
538
self.PropertyChanged(dbus.String(u"checker_running"),
539
dbus.Boolean(False, variant_level=1))
540
if os.WIFEXITED(condition):
541
exitstatus = os.WEXITSTATUS(condition)
542
# Emit D-Bus signal
543
self.CheckerCompleted(dbus.Int16(exitstatus),
544
dbus.Int64(condition),
545
dbus.String(command))
546
else:
547
# Emit D-Bus signal
548
self.CheckerCompleted(dbus.Int16(-1),
549
dbus.Int64(condition),
550
dbus.String(command))
551
552
return Client.checker_callback(self, pid, condition, command,
553
*args, **kwargs)
554
555
def checked_ok(self, *args, **kwargs):
556
r = Client.checked_ok(self, *args, **kwargs)
557
# Emit D-Bus signal
558
self.PropertyChanged(
559
dbus.String(u"last_checked_ok"),
560
(self._datetime_to_dbus(self.last_checked_ok,
561
variant_level=1)))
562
return r
563
564
def start_checker(self, *args, **kwargs):
565
old_checker = self.checker
566
if self.checker is not None:
567
old_checker_pid = self.checker.pid
568
else:
569
old_checker_pid = None
570
r = Client.start_checker(self, *args, **kwargs)
571
# Only if new checker process was started
572
if (self.checker is not None
573
and old_checker_pid != self.checker.pid):
574
# Emit D-Bus signal
575
self.CheckerStarted(self.current_checker_command)
576
self.PropertyChanged(
577
dbus.String(u"checker_running"),
578
dbus.Boolean(True, variant_level=1))
579
return r
580
581
def stop_checker(self, *args, **kwargs):
582
old_checker = getattr(self, u"checker", None)
583
r = Client.stop_checker(self, *args, **kwargs)
584
if (old_checker is not None
585
and getattr(self, u"checker", None) is None):
586
self.PropertyChanged(dbus.String(u"checker_running"),
587
dbus.Boolean(False, variant_level=1))
588
return r
589
451
590
452
## D-Bus methods & signals
591
453
_interface = u"se.bsnet.fukt.Mandos.Client"
592
454
593
455
# CheckedOK - method
594
@dbus.service.method(_interface)
595
def CheckedOK(self):
596
return self.checked_ok()
456
CheckedOK = dbus.service.method(_interface)(checked_ok)
457
CheckedOK.__name__ = "CheckedOK"
597
458
598
459
# CheckerCompleted - signal
599
@dbus.service.signal(_interface, signature=u"nxs")
460
@dbus.service.signal(_interface, signature="nxs")
600
461
def CheckerCompleted(self, exitcode, waitstatus, command):
601
462
"D-Bus signal"
602
463
pass
603
464
604
465
# CheckerStarted - signal
605
@dbus.service.signal(_interface, signature=u"s")
466
@dbus.service.signal(_interface, signature="s")
606
467
def CheckerStarted(self, command):
607
468
"D-Bus signal"
608
469
pass
609
470
610
471
# GetAllProperties - method
611
@dbus.service.method(_interface, out_signature=u"a{sv}")
472
@dbus.service.method(_interface, out_signature="a{sv}")
612
473
def GetAllProperties(self):
613
474
"D-Bus method"
614
475
return dbus.Dictionary({
615
dbus.String(u"name"):
476
dbus.String("name"):
616
477
dbus.String(self.name, variant_level=1),
617
dbus.String(u"fingerprint"):
478
dbus.String("fingerprint"):
618
479
dbus.String(self.fingerprint, variant_level=1),
619
dbus.String(u"host"):
480
dbus.String("host"):
620
481
dbus.String(self.host, variant_level=1),
621
dbus.String(u"created"):
622
self._datetime_to_dbus(self.created,
623
variant_level=1),
624
dbus.String(u"last_enabled"):
625
(self._datetime_to_dbus(self.last_enabled,
626
variant_level=1)
482
dbus.String("created"):
483
_datetime_to_dbus(self.created, variant_level=1),
484
dbus.String("last_enabled"):
485
(_datetime_to_dbus(self.last_enabled,
486
variant_level=1)
627
487
if self.last_enabled is not None
628
488
else dbus.Boolean(False, variant_level=1)),
629
dbus.String(u"enabled"):
489
dbus.String("enabled"):
630
490
dbus.Boolean(self.enabled, variant_level=1),
631
dbus.String(u"last_checked_ok"):
632
(self._datetime_to_dbus(self.last_checked_ok,
633
variant_level=1)
491
dbus.String("last_checked_ok"):
492
(_datetime_to_dbus(self.last_checked_ok,
493
variant_level=1)
634
494
if self.last_checked_ok is not None
635
495
else dbus.Boolean (False, variant_level=1)),
636
dbus.String(u"timeout"):
496
dbus.String("timeout"):
637
497
dbus.UInt64(self.timeout_milliseconds(),
638
498
variant_level=1),
639
dbus.String(u"interval"):
499
dbus.String("interval"):
640
500
dbus.UInt64(self.interval_milliseconds(),
641
501
variant_level=1),
642
dbus.String(u"checker"):
502
dbus.String("checker"):
643
503
dbus.String(self.checker_command,
644
504
variant_level=1),
645
dbus.String(u"checker_running"):
505
dbus.String("checker_running"):
646
506
dbus.Boolean(self.checker is not None,
647
507
variant_level=1),
648
dbus.String(u"object_path"):
508
dbus.String("object_path"):
649
509
dbus.ObjectPath(self.dbus_object_path,
650
510
variant_level=1)
651
}, signature=u"sv")
511
}, signature="sv")
652
512
653
513
# IsStillValid - method
654
@dbus.service.method(_interface, out_signature=u"b")
655
def IsStillValid(self):
656
return self.still_valid()
514
IsStillValid = (dbus.service.method(_interface, out_signature="b")
515
(still_valid))
516
IsStillValid.__name__ = "IsStillValid"
657
517
658
518
# PropertyChanged - signal
659
@dbus.service.signal(_interface, signature=u"sv")
519
@dbus.service.signal(_interface, signature="sv")
660
520
def PropertyChanged(self, property, value):
661
521
"D-Bus signal"
662
522
pass
663
523
664
# ReceivedSecret - signal
665
@dbus.service.signal(_interface)
666
def ReceivedSecret(self):
667
"D-Bus signal"
668
pass
669
670
# Rejected - signal
671
@dbus.service.signal(_interface)
672
def Rejected(self):
673
"D-Bus signal"
674
pass
675
676
524
# SetChecker - method
677
@dbus.service.method(_interface, in_signature=u"s")
525
@dbus.service.method(_interface, in_signature="s")
678
526
def SetChecker(self, checker):
679
527
"D-Bus setter method"
680
528
self.checker_command = checker
684
532
variant_level=1))
685
533
686
534
# SetHost - method
687
@dbus.service.method(_interface, in_signature=u"s")
535
@dbus.service.method(_interface, in_signature="s")
688
536
def SetHost(self, host):
689
537
"D-Bus setter method"
690
538
self.host = host
693
541
dbus.String(self.host, variant_level=1))
694
542
695
543
# SetInterval - method
696
@dbus.service.method(_interface, in_signature=u"t")
544
@dbus.service.method(_interface, in_signature="t")
697
545
def SetInterval(self, milliseconds):
698
546
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
699
547
# Emit D-Bus signal
702
550
variant_level=1)))
703
551
704
552
# SetSecret - method
705
@dbus.service.method(_interface, in_signature=u"ay",
553
@dbus.service.method(_interface, in_signature="ay",
706
554
byte_arrays=True)
707
555
def SetSecret(self, secret):
708
556
"D-Bus setter method"
709
557
self.secret = str(secret)
710
558
711
559
# SetTimeout - method
712
@dbus.service.method(_interface, in_signature=u"t")
560
@dbus.service.method(_interface, in_signature="t")
713
561
def SetTimeout(self, milliseconds):
714
562
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
715
563
# Emit D-Bus signal
718
566
variant_level=1)))
719
567
720
568
# Enable - method
721
@dbus.service.method(_interface)
722
def Enable(self):
723
"D-Bus method"
724
self.enable()
569
Enable = dbus.service.method(_interface)(enable)
570
Enable.__name__ = "Enable"
725
571
726
572
# StartChecker - method
727
573
@dbus.service.method(_interface)
736
582
self.disable()
737
583
738
584
# StopChecker - method
739
@dbus.service.method(_interface)
740
def StopChecker(self):
741
self.stop_checker()
585
StopChecker = dbus.service.method(_interface)(stop_checker)
586
StopChecker.__name__ = "StopChecker"
742
587
743
588
del _interface
744
589
745
590
746
class ClientHandler(socketserver.BaseRequestHandler, object):
747
"""A class to handle client connections.
748
749
Instantiated once for each connection to handle it.
591
def peer_certificate(session):
592
"Return the peer's OpenPGP certificate as a bytestring"
593
# If not an OpenPGP certificate...
594
if (gnutls.library.functions
595
.gnutls_certificate_type_get(session._c_object)
596
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
597
# ...do the normal thing
598
return session.peer_certificate
599
list_size = ctypes.c_uint(1)
600
cert_list = (gnutls.library.functions
601
.gnutls_certificate_get_peers
602
(session._c_object, ctypes.byref(list_size)))
603
if not bool(cert_list) and list_size.value != 0:
604
raise gnutls.errors.GNUTLSError("error getting peer"
605
" certificate")
606
if list_size.value == 0:
607
return None
608
cert = cert_list[0]
609
return ctypes.string_at(cert.data, cert.size)
610
611
612
def fingerprint(openpgp):
613
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
614
# New GnuTLS "datum" with the OpenPGP public key
615
datum = (gnutls.library.types
616
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
617
ctypes.POINTER
618
(ctypes.c_ubyte)),
619
ctypes.c_uint(len(openpgp))))
620
# New empty GnuTLS certificate
621
crt = gnutls.library.types.gnutls_openpgp_crt_t()
622
(gnutls.library.functions
623
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
624
# Import the OpenPGP public key into the certificate
625
(gnutls.library.functions
626
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
627
gnutls.library.constants
628
.GNUTLS_OPENPGP_FMT_RAW))
629
# Verify the self signature in the key
630
crtverify = ctypes.c_uint()
631
(gnutls.library.functions
632
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
633
if crtverify.value != 0:
634
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
635
raise gnutls.errors.CertificateSecurityError("Verify failed")
636
# New buffer for the fingerprint
637
buf = ctypes.create_string_buffer(20)
638
buf_len = ctypes.c_size_t()
639
# Get the fingerprint from the certificate into the buffer
640
(gnutls.library.functions
641
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
642
ctypes.byref(buf_len)))
643
# Deinit the certificate
644
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
645
# Convert the buffer to a Python bytestring
646
fpr = ctypes.string_at(buf, buf_len.value)
647
# Convert the bytestring to hexadecimal notation
648
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
649
return hex_fpr
650
651
652
class TCP_handler(SocketServer.BaseRequestHandler, object):
653
"""A TCP request handler class.
654
Instantiated by IPv6_TCPServer for each request to handle it.
750
655
Note: This will run in its own forked process."""
751
656
752
657
def handle(self):
753
658
logger.info(u"TCP connection from: %s",
754
659
unicode(self.client_address))
755
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
756
# Open IPC pipe to parent process
757
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
758
session = (gnutls.connection
759
.ClientSession(self.request,
760
gnutls.connection
761
.X509Credentials()))
762
763
line = self.request.makefile().readline()
764
logger.debug(u"Protocol version: %r", line)
765
try:
766
if int(line.strip().split()[0]) > 1:
767
raise RuntimeError
768
except (ValueError, IndexError, RuntimeError), error:
769
logger.error(u"Unknown protocol version: %s", error)
770
return
771
772
# Note: gnutls.connection.X509Credentials is really a
773
# generic GnuTLS certificate credentials object so long as
774
# no X.509 keys are added to it. Therefore, we can use it
775
# here despite using OpenPGP certificates.
776
777
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
778
# u"+AES-256-CBC", u"+SHA1",
779
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
780
# u"+DHE-DSS"))
781
# Use a fallback default, since this MUST be set.
782
priority = self.server.gnutls_priority
783
if priority is None:
784
priority = u"NORMAL"
785
(gnutls.library.functions
786
.gnutls_priority_set_direct(session._c_object,
787
priority, None))
788
789
try:
790
session.handshake()
791
except gnutls.errors.GNUTLSError, error:
792
logger.warning(u"Handshake failed: %s", error)
793
# Do not run session.bye() here: the session is not
794
# established. Just abandon the request.
795
return
796
logger.debug(u"Handshake succeeded")
797
try:
798
fpr = self.fingerprint(self.peer_certificate(session))
799
except (TypeError, gnutls.errors.GNUTLSError), error:
800
logger.warning(u"Bad certificate: %s", error)
801
session.bye()
802
return
803
logger.debug(u"Fingerprint: %s", fpr)
804
805
for c in self.server.clients:
806
if c.fingerprint == fpr:
807
client = c
808
break
809
else:
810
ipc.write(u"NOTFOUND %s\n" % fpr)
811
session.bye()
812
return
813
# Have to check if client.still_valid(), since it is
814
# possible that the client timed out while establishing
815
# the GnuTLS session.
816
if not client.still_valid():
817
ipc.write(u"INVALID %s\n" % client.name)
818
session.bye()
819
return
820
ipc.write(u"SENDING %s\n" % client.name)
821
sent_size = 0
822
while sent_size < len(client.secret):
823
sent = session.send(client.secret[sent_size:])
824
logger.debug(u"Sent: %d, remaining: %d",
825
sent, len(client.secret)
826
- (sent_size + sent))
827
sent_size += sent
828
session.bye()
829
830
@staticmethod
831
def peer_certificate(session):
832
"Return the peer's OpenPGP certificate as a bytestring"
833
# If not an OpenPGP certificate...
834
if (gnutls.library.functions
835
.gnutls_certificate_type_get(session._c_object)
836
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
837
# ...do the normal thing
838
return session.peer_certificate
839
list_size = ctypes.c_uint(1)
840
cert_list = (gnutls.library.functions
841
.gnutls_certificate_get_peers
842
(session._c_object, ctypes.byref(list_size)))
843
if not bool(cert_list) and list_size.value != 0:
844
raise gnutls.errors.GNUTLSError(u"error getting peer"
845
u" certificate")
846
if list_size.value == 0:
847
return None
848
cert = cert_list[0]
849
return ctypes.string_at(cert.data, cert.size)
850
851
@staticmethod
852
def fingerprint(openpgp):
853
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
854
# New GnuTLS "datum" with the OpenPGP public key
855
datum = (gnutls.library.types
856
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
857
ctypes.POINTER
858
(ctypes.c_ubyte)),
859
ctypes.c_uint(len(openpgp))))
860
# New empty GnuTLS certificate
861
crt = gnutls.library.types.gnutls_openpgp_crt_t()
862
(gnutls.library.functions
863
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
864
# Import the OpenPGP public key into the certificate
865
(gnutls.library.functions
866
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
867
gnutls.library.constants
868
.GNUTLS_OPENPGP_FMT_RAW))
869
# Verify the self signature in the key
870
crtverify = ctypes.c_uint()
871
(gnutls.library.functions
872
.gnutls_openpgp_crt_verify_self(crt, 0,
873
ctypes.byref(crtverify)))
874
if crtverify.value != 0:
875
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
876
raise (gnutls.errors.CertificateSecurityError
877
(u"Verify failed"))
878
# New buffer for the fingerprint
879
buf = ctypes.create_string_buffer(20)
880
buf_len = ctypes.c_size_t()
881
# Get the fingerprint from the certificate into the buffer
882
(gnutls.library.functions
883
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
884
ctypes.byref(buf_len)))
885
# Deinit the certificate
886
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
887
# Convert the buffer to a Python bytestring
888
fpr = ctypes.string_at(buf, buf_len.value)
889
# Convert the bytestring to hexadecimal notation
890
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
891
return hex_fpr
892
893
894
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
895
"""Like socketserver.ForkingMixIn, but also pass a pipe.
896
897
Assumes a gobject.MainLoop event loop.
898
"""
899
def process_request(self, request, client_address):
900
"""Overrides and wraps the original process_request().
901
902
This function creates a new pipe in self.pipe
903
"""
904
self.pipe = os.pipe()
905
super(ForkingMixInWithPipe,
906
self).process_request(request, client_address)
907
os.close(self.pipe[1]) # close write end
908
# Call "handle_ipc" for both data and EOF events
909
gobject.io_add_watch(self.pipe[0],
910
gobject.IO_IN | gobject.IO_HUP,
911
self.handle_ipc)
912
def handle_ipc(source, condition):
913
"""Dummy function; override as necessary"""
914
os.close(source)
915
return False
916
917
918
class IPv6_TCPServer(ForkingMixInWithPipe,
919
socketserver.TCPServer, object):
920
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
921
660
session = (gnutls.connection
661
.ClientSession(self.request,
662
gnutls.connection
663
.X509Credentials()))
664
665
line = self.request.makefile().readline()
666
logger.debug(u"Protocol version: %r", line)
667
try:
668
if int(line.strip().split()[0]) > 1:
669
raise RuntimeError
670
except (ValueError, IndexError, RuntimeError), error:
671
logger.error(u"Unknown protocol version: %s", error)
672
return
673
674
# Note: gnutls.connection.X509Credentials is really a generic
675
# GnuTLS certificate credentials object so long as no X.509
676
# keys are added to it. Therefore, we can use it here despite
677
# using OpenPGP certificates.
678
679
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
680
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
681
# "+DHE-DSS"))
682
# Use a fallback default, since this MUST be set.
683
priority = self.server.settings.get("priority", "NORMAL")
684
(gnutls.library.functions
685
.gnutls_priority_set_direct(session._c_object,
686
priority, None))
687
688
try:
689
session.handshake()
690
except gnutls.errors.GNUTLSError, error:
691
logger.warning(u"Handshake failed: %s", error)
692
# Do not run session.bye() here: the session is not
693
# established. Just abandon the request.
694
return
695
logger.debug(u"Handshake succeeded")
696
try:
697
fpr = fingerprint(peer_certificate(session))
698
except (TypeError, gnutls.errors.GNUTLSError), error:
699
logger.warning(u"Bad certificate: %s", error)
700
session.bye()
701
return
702
logger.debug(u"Fingerprint: %s", fpr)
703
704
for c in self.server.clients:
705
if c.fingerprint == fpr:
706
client = c
707
break
708
else:
709
logger.warning(u"Client not found for fingerprint: %s",
710
fpr)
711
session.bye()
712
return
713
# Have to check if client.still_valid(), since it is possible
714
# that the client timed out while establishing the GnuTLS
715
# session.
716
if not client.still_valid():
717
logger.warning(u"Client %(name)s is invalid",
718
vars(client))
719
session.bye()
720
return
721
## This won't work here, since we're in a fork.
722
# client.checked_ok()
723
sent_size = 0
724
while sent_size < len(client.secret):
725
sent = session.send(client.secret[sent_size:])
726
logger.debug(u"Sent: %d, remaining: %d",
727
sent, len(client.secret)
728
- (sent_size + sent))
729
sent_size += sent
730
session.bye()
731
732
733
class IPv6_TCPServer(SocketServer.ForkingMixIn,
734
SocketServer.TCPServer, object):
735
"""IPv6 TCP server. Accepts 'None' as address and/or port.
922
736
Attributes:
737
settings: Server settings
738
clients: Set() of Client objects
923
739
enabled: Boolean; whether this server is activated yet
924
interface: None or a network interface name (string)
925
use_ipv6: Boolean; to use IPv6 or not
926
----
927
clients: set of Client objects
928
gnutls_priority GnuTLS priority string
929
use_dbus: Boolean; to emit D-Bus signals or not
930
740
"""
931
def __init__(self, server_address, RequestHandlerClass,
932
interface=None, use_ipv6=True, clients=None,
933
gnutls_priority=None, use_dbus=True):
741
address_family = socket.AF_INET6
742
def __init__(self, *args, **kwargs):
743
if "settings" in kwargs:
744
self.settings = kwargs["settings"]
745
del kwargs["settings"]
746
if "clients" in kwargs:
747
self.clients = kwargs["clients"]
748
del kwargs["clients"]
934
749
self.enabled = False
935
self.interface = interface
936
if use_ipv6:
937
self.address_family = socket.AF_INET6
938
self.clients = clients
939
self.use_dbus = use_dbus
940
self.gnutls_priority = gnutls_priority
941
socketserver.TCPServer.__init__(self, server_address,
942
RequestHandlerClass)
750
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
943
751
def server_bind(self):
944
752
"""This overrides the normal server_bind() function
945
753
to bind to an interface if one was specified, and also NOT to
946
754
bind to an address or port if they were not specified."""
947
if self.interface is not None:
755
if self.settings["interface"]:
756
# 25 is from /usr/include/asm-i486/socket.h
757
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
948
758
try:
949
759
self.socket.setsockopt(socket.SOL_SOCKET,
950
760
SO_BINDTODEVICE,
951
str(self.interface + u'\0'))
761
self.settings["interface"])
952
762
except socket.error, error:
953
763
if error[0] == errno.EPERM:
954
764
logger.error(u"No permission to"
955
765
u" bind to interface %s",
956
self.interface)
766
self.settings["interface"])
957
767
else:
958
768
raise
959
769
# Only bind(2) the socket if we really need to.
960
770
if self.server_address[0] or self.server_address[1]:
961
771
if not self.server_address[0]:
962
if self.address_family == socket.AF_INET6:
963
any_address = u"::" # in6addr_any
964
else:
965
any_address = socket.INADDR_ANY
966
self.server_address = (any_address,
772
in6addr_any = "::"
773
self.server_address = (in6addr_any,
967
774
self.server_address[1])
968
775
elif not self.server_address[1]:
969
776
self.server_address = (self.server_address[0],
970
777
0)
971
# if self.interface:
778
# if self.settings["interface"]:
972
779
# self.server_address = (self.server_address[0],
973
780
# 0, # port
974
781
# 0, # flowinfo
975
782
# if_nametoindex
976
# (self.interface))
977
return socketserver.TCPServer.server_bind(self)
783
# (self.settings
784
# ["interface"]))
785
return super(IPv6_TCPServer, self).server_bind()
978
786
def server_activate(self):
979
787
if self.enabled:
980
return socketserver.TCPServer.server_activate(self)
788
return super(IPv6_TCPServer, self).server_activate()
981
789
def enable(self):
982
790
self.enabled = True
983
def handle_ipc(self, source, condition, file_objects={}):
984
condition_names = {
985
gobject.IO_IN: u"IN", # There is data to read.
986
gobject.IO_OUT: u"OUT", # Data can be written (without
987
# blocking).
988
gobject.IO_PRI: u"PRI", # There is urgent data to read.
989
gobject.IO_ERR: u"ERR", # Error condition.
990
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
991
# broken, usually for pipes and
992
# sockets).
993
}
994
conditions_string = ' | '.join(name
995
for cond, name in
996
condition_names.iteritems()
997
if cond & condition)
998
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
999
conditions_string)
1000
1001
# Turn the pipe file descriptor into a Python file object
1002
if source not in file_objects:
1003
file_objects[source] = os.fdopen(source, u"r", 1)
1004
1005
# Read a line from the file object
1006
cmdline = file_objects[source].readline()
1007
if not cmdline: # Empty line means end of file
1008
# close the IPC pipe
1009
file_objects[source].close()
1010
del file_objects[source]
1011
1012
# Stop calling this function
1013
return False
1014
1015
logger.debug(u"IPC command: %r", cmdline)
1016
1017
# Parse and act on command
1018
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1019
1020
if cmd == u"NOTFOUND":
1021
logger.warning(u"Client not found for fingerprint: %s",
1022
args)
1023
if self.use_dbus:
1024
# Emit D-Bus signal
1025
mandos_dbus_service.ClientNotFound(args)
1026
elif cmd == u"INVALID":
1027
for client in self.clients:
1028
if client.name == args:
1029
logger.warning(u"Client %s is invalid", args)
1030
if self.use_dbus:
1031
# Emit D-Bus signal
1032
client.Rejected()
1033
break
1034
else:
1035
logger.error(u"Unknown client %s is invalid", args)
1036
elif cmd == u"SENDING":
1037
for client in self.clients:
1038
if client.name == args:
1039
logger.info(u"Sending secret to %s", client.name)
1040
client.checked_ok()
1041
if self.use_dbus:
1042
# Emit D-Bus signal
1043
client.ReceivedSecret()
1044
break
1045
else:
1046
logger.error(u"Sending secret to unknown client %s",
1047
args)
1048
else:
1049
logger.error(u"Unknown IPC command: %r", cmdline)
1050
1051
# Keep calling this function
1052
return True
1053
791
1054
792
1055
793
def string_to_delta(interval):
1056
794
"""Parse a string and return a datetime.timedelta
1057
795
1058
>>> string_to_delta(u'7d')
796
>>> string_to_delta('7d')
1059
797
datetime.timedelta(7)
1060
>>> string_to_delta(u'60s')
798
>>> string_to_delta('60s')
1061
799
datetime.timedelta(0, 60)
1062
>>> string_to_delta(u'60m')
800
>>> string_to_delta('60m')
1063
801
datetime.timedelta(0, 3600)
1064
>>> string_to_delta(u'24h')
802
>>> string_to_delta('24h')
1065
803
datetime.timedelta(1)
1066
804
>>> string_to_delta(u'1w')
1067
805
datetime.timedelta(7)
1068
>>> string_to_delta(u'5m 30s')
806
>>> string_to_delta('5m 30s')
1069
807
datetime.timedelta(0, 330)
1070
808
"""
1071
809
timevalue = datetime.timedelta(0)
1091
829
return timevalue
1092
830
1093
831
832
def server_state_changed(state):
833
"""Derived from the Avahi example code"""
834
if state == avahi.SERVER_COLLISION:
835
logger.error(u"Zeroconf server name collision")
836
service.remove()
837
elif state == avahi.SERVER_RUNNING:
838
service.add()
839
840
841
def entry_group_state_changed(state, error):
842
"""Derived from the Avahi example code"""
843
logger.debug(u"Avahi state change: %i", state)
844
845
if state == avahi.ENTRY_GROUP_ESTABLISHED:
846
logger.debug(u"Zeroconf service established.")
847
elif state == avahi.ENTRY_GROUP_COLLISION:
848
logger.warning(u"Zeroconf service name collision.")
849
service.rename()
850
elif state == avahi.ENTRY_GROUP_FAILURE:
851
logger.critical(u"Avahi: Error in group state changed %s",
852
unicode(error))
853
raise AvahiGroupError(u"State changed: %s" % unicode(error))
854
1094
855
def if_nametoindex(interface):
1095
"""Call the C function if_nametoindex(), or equivalent
1096
1097
Note: This function cannot accept a unicode string."""
856
"""Call the C function if_nametoindex(), or equivalent"""
1098
857
global if_nametoindex
1099
858
try:
1100
859
if_nametoindex = (ctypes.cdll.LoadLibrary
1101
(ctypes.util.find_library(u"c"))
860
(ctypes.util.find_library("c"))
1102
861
.if_nametoindex)
1103
862
except (OSError, AttributeError):
1104
logger.warning(u"Doing if_nametoindex the hard way")
863
if "struct" not in sys.modules:
864
import struct
865
if "fcntl" not in sys.modules:
866
import fcntl
1105
867
def if_nametoindex(interface):
1106
868
"Get an interface index the hard way, i.e. using fcntl()"
1107
869
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1108
870
with closing(socket.socket()) as s:
1109
871
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1110
struct.pack(str(u"16s16x"),
1111
interface))
1112
interface_index = struct.unpack(str(u"I"),
1113
ifreq[16:20])[0]
872
struct.pack("16s16x", interface))
873
interface_index = struct.unpack("I", ifreq[16:20])[0]
1114
874
return interface_index
1115
875
return if_nametoindex(interface)
1116
876
1117
877
1118
878
def daemon(nochdir = False, noclose = False):
1119
879
"""See daemon(3). Standard BSD Unix function.
1120
1121
880
This should really exist as os.daemon, but it doesn't (yet)."""
1122
881
if os.fork():
1123
882
sys.exit()
1124
883
os.setsid()
1125
884
if not nochdir:
1126
os.chdir(u"/")
885
os.chdir("/")
1127
886
if os.fork():
1128
887
sys.exit()
1129
888
if not noclose:
1131
890
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1132
891
if not stat.S_ISCHR(os.fstat(null).st_mode):
1133
892
raise OSError(errno.ENODEV,
1134
u"/dev/null not a character device")
893
"/dev/null not a character device")
1135
894
os.dup2(null, sys.stdin.fileno())
1136
895
os.dup2(null, sys.stdout.fileno())
1137
896
os.dup2(null, sys.stderr.fileno())
1140
899
1141
900
1142
901
def main():
1143
1144
######################################################################
1145
# Parsing of options, both command line and config file
1146
1147
902
parser = optparse.OptionParser(version = "%%prog %s" % version)
1148
parser.add_option("-i", u"--interface", type=u"string",
1149
metavar="IF", help=u"Bind to interface IF")
1150
parser.add_option("-a", u"--address", type=u"string",
1151
help=u"Address to listen for requests on")
1152
parser.add_option("-p", u"--port", type=u"int",
1153
help=u"Port number to receive requests on")
1154
parser.add_option("--check", action=u"store_true",
1155
help=u"Run self-test")
1156
parser.add_option("--debug", action=u"store_true",
1157
help=u"Debug mode; run in foreground and log to"
1158
u" terminal")
1159
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1160
u" priority string (see GnuTLS documentation)")
1161
parser.add_option("--servicename", type=u"string",
1162
metavar=u"NAME", help=u"Zeroconf service name")
1163
parser.add_option("--configdir", type=u"string",
1164
default=u"/etc/mandos", metavar=u"DIR",
1165
help=u"Directory to search for configuration"
1166
u" files")
1167
parser.add_option("--no-dbus", action=u"store_false",
1168
dest=u"use_dbus", help=u"Do not provide D-Bus"
1169
u" system bus interface")
1170
parser.add_option("--no-ipv6", action=u"store_false",
1171
dest=u"use_ipv6", help=u"Do not use IPv6")
903
parser.add_option("-i", "--interface", type="string",
904
metavar="IF", help="Bind to interface IF")
905
parser.add_option("-a", "--address", type="string",
906
help="Address to listen for requests on")
907
parser.add_option("-p", "--port", type="int",
908
help="Port number to receive requests on")
909
parser.add_option("--check", action="store_true",
910
help="Run self-test")
911
parser.add_option("--debug", action="store_true",
912
help="Debug mode; run in foreground and log to"
913
" terminal")
914
parser.add_option("--priority", type="string", help="GnuTLS"
915
" priority string (see GnuTLS documentation)")
916
parser.add_option("--servicename", type="string", metavar="NAME",
917
help="Zeroconf service name")
918
parser.add_option("--configdir", type="string",
919
default="/etc/mandos", metavar="DIR",
920
help="Directory to search for configuration"
921
" files")
922
parser.add_option("--no-dbus", action="store_false",
923
dest="use_dbus",
924
help="Do not provide D-Bus system bus"
925
" interface")
1172
926
options = parser.parse_args()[0]
1173
927
1174
928
if options.check:
1177
931
sys.exit()
1178
932
1179
933
# Default values for config file for server-global settings
1180
server_defaults = { u"interface": u"",
1181
u"address": u"",
1182
u"port": u"",
1183
u"debug": u"False",
1184
u"priority":
1185
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1186
u"servicename": u"Mandos",
1187
u"use_dbus": u"True",
1188
u"use_ipv6": u"True",
934
server_defaults = { "interface": "",
935
"address": "",
936
"port": "",
937
"debug": "False",
938
"priority":
939
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
940
"servicename": "Mandos",
941
"use_dbus": "True",
1189
942
}
1190
943
1191
944
# Parse config file for server-global settings
1192
server_config = configparser.SafeConfigParser(server_defaults)
945
server_config = ConfigParser.SafeConfigParser(server_defaults)
1193
946
del server_defaults
1194
server_config.read(os.path.join(options.configdir,
1195
u"mandos.conf"))
947
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1196
948
# Convert the SafeConfigParser object to a dict
1197
949
server_settings = server_config.defaults()
1198
950
# Use the appropriate methods on the non-string config options
1199
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1200
server_settings[option] = server_config.getboolean(u"DEFAULT",
1201
option)
951
server_settings["debug"] = server_config.getboolean("DEFAULT",
952
"debug")
953
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
954
"use_dbus")
1202
955
if server_settings["port"]:
1203
server_settings["port"] = server_config.getint(u"DEFAULT",
1204
u"port")
956
server_settings["port"] = server_config.getint("DEFAULT",
957
"port")
1205
958
del server_config
1206
959
1207
960
# Override the settings from the config file with command line
1208
961
# options, if set.
1209
for option in (u"interface", u"address", u"port", u"debug",
1210
u"priority", u"servicename", u"configdir",
1211
u"use_dbus", u"use_ipv6"):
962
for option in ("interface", "address", "port", "debug",
963
"priority", "servicename", "configdir",
964
"use_dbus"):
1212
965
value = getattr(options, option)
1213
966
if value is not None:
1214
967
server_settings[option] = value
1215
968
del options
1216
# Force all strings to be unicode
1217
for option in server_settings.keys():
1218
if type(server_settings[option]) is str:
1219
server_settings[option] = unicode(server_settings[option])
1220
969
# Now we have our good server settings in "server_settings"
1221
970
1222
##################################################################
1223
1224
971
# For convenience
1225
debug = server_settings[u"debug"]
1226
use_dbus = server_settings[u"use_dbus"]
1227
use_ipv6 = server_settings[u"use_ipv6"]
972
debug = server_settings["debug"]
973
use_dbus = server_settings["use_dbus"]
1228
974
1229
975
if not debug:
1230
976
syslogger.setLevel(logging.WARNING)
1231
977
console.setLevel(logging.WARNING)
1232
978
1233
if server_settings[u"servicename"] != u"Mandos":
979
if server_settings["servicename"] != "Mandos":
1234
980
syslogger.setFormatter(logging.Formatter
1235
(u'Mandos (%s) [%%(process)d]:'
1236
u' %%(levelname)s: %%(message)s'
1237
% server_settings[u"servicename"]))
981
('Mandos (%s): %%(levelname)s:'
982
' %%(message)s'
983
% server_settings["servicename"]))
1238
984
1239
985
# Parse config file with clients
1240
client_defaults = { u"timeout": u"1h",
1241
u"interval": u"5m",
1242
u"checker": u"fping -q -- %%(host)s",
1243
u"host": u"",
986
client_defaults = { "timeout": "1h",
987
"interval": "5m",
988
"checker": "fping -q -- %%(host)s",
989
"host": "",
1244
990
}
1245
client_config = configparser.SafeConfigParser(client_defaults)
1246
client_config.read(os.path.join(server_settings[u"configdir"],
1247
u"clients.conf"))
1248
1249
global mandos_dbus_service
1250
mandos_dbus_service = None
1251
1252
clients = set()
1253
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1254
server_settings[u"port"]),
1255
ClientHandler,
1256
interface=
1257
server_settings[u"interface"],
1258
use_ipv6=use_ipv6,
1259
clients=clients,
1260
gnutls_priority=
1261
server_settings[u"priority"],
1262
use_dbus=use_dbus)
1263
pidfilename = u"/var/run/mandos.pid"
991
client_config = ConfigParser.SafeConfigParser(client_defaults)
992
client_config.read(os.path.join(server_settings["configdir"],
993
"clients.conf"))
994
995
clients = Set()
996
tcp_server = IPv6_TCPServer((server_settings["address"],
997
server_settings["port"]),
998
TCP_handler,
999
settings=server_settings,
1000
clients=clients)
1001
pidfilename = "/var/run/mandos.pid"
1264
1002
try:
1265
pidfile = open(pidfilename, u"w")
1003
pidfile = open(pidfilename, "w")
1266
1004
except IOError:
1267
logger.error(u"Could not open file %r", pidfilename)
1005
logger.error("Could not open file %r", pidfilename)
1268
1006
1269
1007
try:
1270
uid = pwd.getpwnam(u"_mandos").pw_uid
1271
gid = pwd.getpwnam(u"_mandos").pw_gid
1008
uid = pwd.getpwnam("_mandos").pw_uid
1009
gid = pwd.getpwnam("_mandos").pw_gid
1272
1010
except KeyError:
1273
1011
try:
1274
uid = pwd.getpwnam(u"mandos").pw_uid
1275
gid = pwd.getpwnam(u"mandos").pw_gid
1012
uid = pwd.getpwnam("mandos").pw_uid
1013
gid = pwd.getpwnam("mandos").pw_gid
1276
1014
except KeyError:
1277
1015
try:
1278
uid = pwd.getpwnam(u"nobody").pw_uid
1279
gid = pwd.getpwnam(u"nobody").pw_gid
1016
uid = pwd.getpwnam("nobody").pw_uid
1017
gid = pwd.getpwnam("nogroup").pw_gid
1280
1018
except KeyError:
1281
1019
uid = 65534
1282
1020
gid = 65534
1295
1033
1296
1034
@gnutls.library.types.gnutls_log_func
1297
1035
def debug_gnutls(level, string):
1298
logger.debug(u"GnuTLS: %s", string[:-1])
1036
logger.debug("GnuTLS: %s", string[:-1])
1299
1037
1300
1038
(gnutls.library.functions
1301
1039
.gnutls_global_set_log_function(debug_gnutls))
1302
1040
1041
global service
1042
service = AvahiService(name = server_settings["servicename"],
1043
servicetype = "_mandos._tcp", )
1044
if server_settings["interface"]:
1045
service.interface = (if_nametoindex
1046
(server_settings["interface"]))
1047
1303
1048
global main_loop
1049
global bus
1050
global server
1304
1051
# From the Avahi example code
1305
1052
DBusGMainLoop(set_as_default=True )
1306
1053
main_loop = gobject.MainLoop()
1307
1054
bus = dbus.SystemBus()
1055
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1056
avahi.DBUS_PATH_SERVER),
1057
avahi.DBUS_INTERFACE_SERVER)
1308
1058
# End of Avahi example code
1309
1059
if use_dbus:
1310
1060
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1311
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1312
service = AvahiService(name = server_settings[u"servicename"],
1313
servicetype = u"_mandos._tcp",
1314
protocol = protocol, bus = bus)
1315
if server_settings["interface"]:
1316
service.interface = (if_nametoindex
1317
(str(server_settings[u"interface"])))
1318
1061
1319
client_class = Client
1320
if use_dbus:
1321
client_class = functools.partial(ClientDBus, bus = bus)
1322
clients.update(set(
1323
client_class(name = section,
1324
config= dict(client_config.items(section)))
1325
for section in client_config.sections()))
1062
clients.update(Set(Client(name = section,
1063
config
1064
= dict(client_config.items(section)),
1065
use_dbus = use_dbus)
1066
for section in client_config.sections()))
1326
1067
if not clients:
1327
1068
logger.warning(u"No clients defined")
1328
1069
1339
1080
daemon()
1340
1081
1341
1082
try:
1342
with closing(pidfile):
1343
pid = os.getpid()
1344
pidfile.write(str(pid) + "\n")
1083
pid = os.getpid()
1084
pidfile.write(str(pid) + "\n")
1085
pidfile.close()
1345
1086
del pidfile
1346
1087
except IOError:
1347
1088
logger.error(u"Could not write to file %r with PID %d",
1353
1094
1354
1095
def cleanup():
1355
1096
"Cleanup function; run on exit"
1356
service.cleanup()
1097
global group
1098
# From the Avahi example code
1099
if not group is None:
1100
group.Free()
1101
group = None
1102
# End of Avahi example code
1357
1103
1358
1104
while clients:
1359
1105
client = clients.pop()
1368
1114
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1369
1115
1370
1116
if use_dbus:
1371
class MandosDBusService(dbus.service.Object):
1117
class MandosServer(dbus.service.Object):
1372
1118
"""A D-Bus proxy object"""
1373
1119
def __init__(self):
1374
dbus.service.Object.__init__(self, bus, u"/")
1120
dbus.service.Object.__init__(self, bus, "/")
1375
1121
_interface = u"se.bsnet.fukt.Mandos"
1376
1122
1377
@dbus.service.signal(_interface, signature=u"oa{sv}")
1123
@dbus.service.signal(_interface, signature="oa{sv}")
1378
1124
def ClientAdded(self, objpath, properties):
1379
1125
"D-Bus signal"
1380
1126
pass
1381
1127
1382
@dbus.service.signal(_interface, signature=u"s")
1383
def ClientNotFound(self, fingerprint):
1384
"D-Bus signal"
1385
pass
1386
1387
@dbus.service.signal(_interface, signature=u"os")
1128
@dbus.service.signal(_interface, signature="os")
1388
1129
def ClientRemoved(self, objpath, name):
1389
1130
"D-Bus signal"
1390
1131
pass
1391
1132
1392
@dbus.service.method(_interface, out_signature=u"ao")
1133
@dbus.service.method(_interface, out_signature="ao")
1393
1134
def GetAllClients(self):
1394
1135
"D-Bus method"
1395
1136
return dbus.Array(c.dbus_object_path for c in clients)
1396
1137
1397
@dbus.service.method(_interface,
1398
out_signature=u"a{oa{sv}}")
1138
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1399
1139
def GetAllClientsWithProperties(self):
1400
1140
"D-Bus method"
1401
1141
return dbus.Dictionary(
1402
1142
((c.dbus_object_path, c.GetAllProperties())
1403
1143
for c in clients),
1404
signature=u"oa{sv}")
1144
signature="oa{sv}")
1405
1145
1406
@dbus.service.method(_interface, in_signature=u"o")
1146
@dbus.service.method(_interface, in_signature="o")
1407
1147
def RemoveClient(self, object_path):
1408
1148
"D-Bus method"
1409
1149
for c in clients:
1410
1150
if c.dbus_object_path == object_path:
1411
1151
clients.remove(c)
1412
c.remove_from_connection()
1413
1152
# Don't signal anything except ClientRemoved
1414
c.disable(signal=False)
1153
c.use_dbus = False
1154
c.disable()
1415
1155
# Emit D-Bus signal
1416
1156
self.ClientRemoved(object_path, c.name)
1417
1157
return
1419
1159
1420
1160
del _interface
1421
1161
1422
mandos_dbus_service = MandosDBusService()
1162
mandos_server = MandosServer()
1423
1163
1424
1164
for client in clients:
1425
1165
if use_dbus:
1426
1166
# Emit D-Bus signal
1427
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1428
client.GetAllProperties())
1167
mandos_server.ClientAdded(client.dbus_object_path,
1168
client.GetAllProperties())
1429
1169
client.enable()
1430
1170
1431
1171
tcp_server.enable()
1433
1173
1434
1174
# Find out what port we got
1435
1175
service.port = tcp_server.socket.getsockname()[1]
1436
if use_ipv6:
1437
logger.info(u"Now listening on address %r, port %d,"
1438
" flowinfo %d, scope_id %d"
1439
% tcp_server.socket.getsockname())
1440
else: # IPv4
1441
logger.info(u"Now listening on address %r, port %d"
1442
% tcp_server.socket.getsockname())
1176
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1177
u" scope_id %d" % tcp_server.socket.getsockname())
1443
1178
1444
1179
#service.interface = tcp_server.socket.getsockname()[3]
1445
1180
1446
1181
try:
1447
1182
# From the Avahi example code
1183
server.connect_to_signal("StateChanged", server_state_changed)
1448
1184
try:
1449
service.activate()
1185
server_state_changed(server.GetState())
1450
1186
except dbus.exceptions.DBusException, error:
1451
1187
logger.critical(u"DBusException: %s", error)
1452
1188
sys.exit(1)
1465
1201
except KeyboardInterrupt:
1466
1202
if debug:
1467
1203
print >> sys.stderr
1468
logger.debug(u"Server received KeyboardInterrupt")
1469
logger.debug(u"Server exiting")
1204
logger.debug("Server received KeyboardInterrupt")
1205
logger.debug("Server exiting")
1470
1206
1471
1207
if __name__ == '__main__':
1472
1208
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0