To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 330
- compare with another revision
- download diff
- download tarball
- view history from revision 330
- Committer: Teddy Hogeborn
- Date: 2009-04-03 03:36:08 UTC
- Revision ID: teddy@fukt.bsnet.se-20090403033608-ftgzsnnuzo7gbvzc
* mandos (peer_certificate, fingerprint): Moved into "TCP_handler"
class.
(TCP_handler.peer_certificate, TCP_handler.fingerprint): Moved here.
(TCP_handler.handle): Do not log conditions also sent via IPC.
(IPv6_TCPServer.handle_ipc): Bug fix: Remove extra newline from IPC
command log message. Bug fix: Strip
CR and NL from IPC line. Log
conditions recieved via IPC. Log error
if IPC recieved about unknown client.
class.
(TCP_handler.peer_certificate, TCP_handler.fingerprint): Moved here.
(TCP_handler.handle): Do not log conditions also sent via IPC.
(IPv6_TCPServer.handle_ipc): Bug fix: Remove extra newline from IPC
command log message. Bug fix: Strip
CR and NL from IPC line. Log
conditions recieved via IPC. Log error
if IPC recieved about unknown client.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
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
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
31
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
import SocketServer as socketserver
36
import SocketServer
38
37
import socket
39
38
import optparse
40
39
import datetime
45
44
import gnutls.library.functions
46
45
import gnutls.library.constants
47
46
import gnutls.library.types
48
import ConfigParser as configparser
47
import ConfigParser
49
48
import sys
50
49
import re
51
50
import os
52
51
import signal
52
from sets import Set
53
53
import subprocess
54
54
import atexit
55
55
import stat
56
56
import logging
57
57
import logging.handlers
58
58
import pwd
59
import contextlib
60
import struct
61
import fcntl
62
import functools
63
import cPickle as pickle
64
import multiprocessing
59
from contextlib import closing
65
60
66
61
import dbus
67
62
import dbus.service
70
65
from dbus.mainloop.glib import DBusGMainLoop
71
66
import ctypes
72
67
import ctypes.util
73
import xml.dom.minidom
74
import inspect
75
76
try:
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
except AttributeError:
79
try:
80
from IN import SO_BINDTODEVICE
81
except ImportError:
82
SO_BINDTODEVICE = None
83
84
85
version = "1.2.3"
86
87
#logger = logging.getLogger('mandos')
68
69
version = "1.0.8"
70
88
71
logger = logging.Logger('mandos')
89
72
syslogger = (logging.handlers.SysLogHandler
90
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
74
address = "/dev/log"))
92
75
syslogger.setFormatter(logging.Formatter
93
76
('Mandos [%(process)d]: %(levelname)s:'
94
77
' %(message)s'))
96
79
97
80
console = logging.StreamHandler()
98
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
82
' %(levelname)s: %(message)s'))
101
83
logger.addHandler(console)
102
84
103
85
class AvahiError(Exception):
116
98
117
99
class AvahiService(object):
118
100
"""An Avahi (Zeroconf) service.
119
120
101
Attributes:
121
102
interface: integer; avahi.IF_UNSPEC or an interface index.
122
103
Used to optionally bind to the specified interface.
130
111
max_renames: integer; maximum number of renames
131
112
rename_count: integer; counter so we only rename after collisions
132
113
a sensible number of times
133
group: D-Bus Entry Group
134
server: D-Bus Server
135
bus: dbus.SystemBus()
136
114
"""
137
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
116
servicetype = None, port = None, TXT = None,
139
117
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
118
protocol = avahi.PROTO_UNSPEC):
141
119
self.interface = interface
142
120
self.name = name
143
121
self.type = servicetype
148
126
self.rename_count = 0
149
127
self.max_renames = max_renames
150
128
self.protocol = protocol
151
self.group = None # our entry group
152
self.server = None
153
self.bus = bus
154
129
def rename(self):
155
130
"""Derived from the Avahi example code"""
156
131
if self.rename_count >= self.max_renames:
157
logger.critical("No suitable Zeroconf service name found"
158
" after %i retries, exiting.",
132
logger.critical(u"No suitable Zeroconf service name found"
133
u" after %i retries, exiting.",
159
134
self.rename_count)
160
raise AvahiServiceError("Too many renames")
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
162
logger.info("Changing Zeroconf service name to %r ...",
163
self.name)
135
raise AvahiServiceError(u"Too many renames")
136
self.name = server.GetAlternativeServiceName(self.name)
137
logger.info(u"Changing Zeroconf service name to %r ...",
138
str(self.name))
164
139
syslogger.setFormatter(logging.Formatter
165
140
('Mandos (%s) [%%(process)d]:'
166
141
' %%(levelname)s: %%(message)s'
167
142
% self.name))
168
143
self.remove()
169
try:
170
self.add()
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
144
self.add()
175
145
self.rename_count += 1
176
146
def remove(self):
177
147
"""Derived from the Avahi example code"""
178
if self.group is not None:
179
self.group.Reset()
148
if group is not None:
149
group.Reset()
180
150
def add(self):
181
151
"""Derived from the Avahi example code"""
182
if self.group is None:
183
self.group = dbus.Interface(
184
self.bus.get_object(avahi.DBUS_NAME,
185
self.server.EntryGroupNew()),
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
191
self.name, self.type)
192
self.group.AddService(
193
self.interface,
194
self.protocol,
195
dbus.UInt32(0), # flags
196
self.name, self.type,
197
self.domain, self.host,
198
dbus.UInt16(self.port),
199
avahi.string_array_to_txt_array(self.TXT))
200
self.group.Commit()
201
def entry_group_state_changed(self, state, error):
202
"""Derived from the Avahi example code"""
203
logger.debug("Avahi entry group state change: %i", state)
204
205
if state == avahi.ENTRY_GROUP_ESTABLISHED:
206
logger.debug("Zeroconf service established.")
207
elif state == avahi.ENTRY_GROUP_COLLISION:
208
logger.info("Zeroconf service name collision.")
209
self.rename()
210
elif state == avahi.ENTRY_GROUP_FAILURE:
211
logger.critical("Avahi: Error in group state changed %s",
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
215
def cleanup(self):
216
"""Derived from the Avahi example code"""
217
if self.group is not None:
218
self.group.Free()
219
self.group = None
220
def server_state_changed(self, state):
221
"""Derived from the Avahi example code"""
222
logger.debug("Avahi server state change: %i", state)
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
226
elif state == avahi.SERVER_RUNNING:
227
self.add()
228
def activate(self):
229
"""Derived from the Avahi example code"""
230
if self.server is None:
231
self.server = dbus.Interface(
232
self.bus.get_object(avahi.DBUS_NAME,
233
avahi.DBUS_PATH_SERVER),
234
avahi.DBUS_INTERFACE_SERVER)
235
self.server.connect_to_signal("StateChanged",
236
self.server_state_changed)
237
self.server_state_changed(self.server.GetState())
152
global group
153
if group is None:
154
group = dbus.Interface(bus.get_object
155
(avahi.DBUS_NAME,
156
server.EntryGroupNew()),
157
avahi.DBUS_INTERFACE_ENTRY_GROUP)
158
group.connect_to_signal('StateChanged',
159
entry_group_state_changed)
160
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
161
service.name, service.type)
162
group.AddService(
163
self.interface, # interface
164
self.protocol, # protocol
165
dbus.UInt32(0), # flags
166
self.name, self.type,
167
self.domain, self.host,
168
dbus.UInt16(self.port),
169
avahi.string_array_to_txt_array(self.TXT))
170
group.Commit()
171
172
# From the Avahi example code:
173
group = None # our entry group
174
# End of Avahi example code
175
176
177
def _datetime_to_dbus(dt, variant_level=0):
178
"""Convert a UTC datetime.datetime() to a D-Bus type."""
179
return dbus.String(dt.isoformat(), variant_level=variant_level)
238
180
239
181
240
182
class Client(object):
241
183
"""A representation of a client host served by this server.
242
243
184
Attributes:
244
_approved: bool(); 'None' if not yet approved/disapproved
245
approval_delay: datetime.timedelta(); Time to wait for approval
246
approval_duration: datetime.timedelta(); Duration of one approval
185
name: string; from the config file, used in log messages and
186
D-Bus identifiers
187
fingerprint: string (40 or 32 hexadecimal digits); used to
188
uniquely identify the client
189
secret: bytestring; sent verbatim (over TLS) to client
190
host: string; available for use by the checker command
191
created: datetime.datetime(); (UTC) object creation
192
last_enabled: datetime.datetime(); (UTC)
193
enabled: bool()
194
last_checked_ok: datetime.datetime(); (UTC) or None
195
timeout: datetime.timedelta(); How long from last_checked_ok
196
until this client is invalid
197
interval: datetime.timedelta(); How often to start a new checker
198
disable_hook: If set, called by disable() as disable_hook(self)
247
199
checker: subprocess.Popen(); a running checker process used
248
200
to see if the client lives.
249
201
'None' if no process is running.
250
checker_callback_tag: a gobject event source tag, or None
251
checker_command: string; External command which is run to check
252
if client lives. %() expansions are done at
202
checker_initiator_tag: a gobject event source tag, or None
203
disable_initiator_tag: - '' -
204
checker_callback_tag: - '' -
205
checker_command: string; External command which is run to check if
206
client lives. %() expansions are done at
253
207
runtime with vars(self) as dict, so that for
254
208
instance %(name)s can be used in the command.
255
checker_initiator_tag: a gobject event source tag, or None
256
created: datetime.datetime(); (UTC) object creation
257
209
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
260
enabled: bool()
261
fingerprint: string (40 or 32 hexadecimal digits); used to
262
uniquely identify the client
263
host: string; available for use by the checker command
264
interval: datetime.timedelta(); How often to start a new checker
265
last_approval_request: datetime.datetime(); (UTC) or None
266
last_checked_ok: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
268
name: string; from the config file, used in log messages and
269
D-Bus identifiers
270
secret: bytestring; sent verbatim (over TLS) to client
271
timeout: datetime.timedelta(); How long from last_checked_ok
272
until this client is disabled
273
runtime_expansions: Allowed attributes for runtime expansion.
274
210
"""
275
276
runtime_expansions = ("approval_delay", "approval_duration",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
279
"last_enabled", "name", "timeout")
280
281
@staticmethod
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
287
288
211
def timeout_milliseconds(self):
289
212
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
213
return ((self.timeout.days * 24 * 60 * 60 * 1000)
214
+ (self.timeout.seconds * 1000)
215
+ (self.timeout.microseconds // 1000))
291
216
292
217
def interval_milliseconds(self):
293
218
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
219
return ((self.interval.days * 24 * 60 * 60 * 1000)
220
+ (self.interval.seconds * 1000)
221
+ (self.interval.microseconds // 1000))
298
222
299
223
def __init__(self, name = None, disable_hook=None, config=None):
300
224
"""Note: the 'checker' key in 'config' sets the
303
227
self.name = name
304
228
if config is None:
305
229
config = {}
306
logger.debug("Creating client %r", self.name)
230
logger.debug(u"Creating client %r", self.name)
307
231
# Uppercase and remove spaces from fingerprint for later
308
232
# comparison purposes with return value from the fingerprint()
309
233
# function
310
234
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
312
logger.debug(" Fingerprint: %s", self.fingerprint)
235
.replace(u" ", u""))
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
313
237
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
238
self.secret = config["secret"].decode(u"base64")
315
239
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
240
with closing(open(os.path.expanduser
241
(os.path.expandvars
242
(config["secfile"])))) as secfile:
319
243
self.secret = secfile.read()
320
244
else:
321
raise TypeError("No secret or secfile for client %s"
245
raise TypeError(u"No secret or secfile for client %s"
322
246
% self.name)
323
247
self.host = config.get("host", "")
324
248
self.created = datetime.datetime.utcnow()
325
249
self.enabled = False
326
self.last_approval_request = None
327
250
self.last_enabled = None
328
251
self.last_checked_ok = None
329
252
self.timeout = string_to_delta(config["timeout"])
336
259
self.checker_command = config["checker"]
337
260
self.current_checker_command = None
338
261
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
342
self.approvals_pending = 0
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
348
262
349
def send_changedstate(self):
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
354
263
def enable(self):
355
264
"""Start this client's checker and timeout hooks"""
356
if getattr(self, "enabled", False):
357
# Already enabled
358
return
359
self.send_changedstate()
360
265
self.last_enabled = datetime.datetime.utcnow()
361
266
# Schedule a new checker to be started an 'interval' from now,
362
267
# and every interval from then on.
363
268
self.checker_initiator_tag = (gobject.timeout_add
364
269
(self.interval_milliseconds(),
365
270
self.start_checker))
271
# Also start a new checker *right now*.
272
self.start_checker()
366
273
# Schedule a disable() when 'timeout' has passed
367
274
self.disable_initiator_tag = (gobject.timeout_add
368
275
(self.timeout_milliseconds(),
369
276
self.disable))
370
277
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
373
278
374
def disable(self, quiet=True):
279
def disable(self):
375
280
"""Disable this client."""
376
281
if not getattr(self, "enabled", False):
377
282
return False
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
381
logger.info("Disabling client %s", self.name)
283
logger.info(u"Disabling client %s", self.name)
382
284
if getattr(self, "disable_initiator_tag", False):
383
285
gobject.source_remove(self.disable_initiator_tag)
384
286
self.disable_initiator_tag = None
403
305
if os.WIFEXITED(condition):
404
306
exitstatus = os.WEXITSTATUS(condition)
405
307
if exitstatus == 0:
406
logger.info("Checker for %(name)s succeeded",
308
logger.info(u"Checker for %(name)s succeeded",
407
309
vars(self))
408
310
self.checked_ok()
409
311
else:
410
logger.info("Checker for %(name)s failed",
312
logger.info(u"Checker for %(name)s failed",
411
313
vars(self))
412
314
else:
413
logger.warning("Checker for %(name)s crashed?",
315
logger.warning(u"Checker for %(name)s crashed?",
414
316
vars(self))
415
317
416
318
def checked_ok(self):
417
319
"""Bump up the timeout for this client.
418
419
320
This should only be called when the client has been seen,
420
321
alive and well.
421
322
"""
425
326
(self.timeout_milliseconds(),
426
327
self.disable))
427
328
428
def need_approval(self):
429
self.last_approval_request = datetime.datetime.utcnow()
430
431
329
def start_checker(self):
432
330
"""Start a new checker subprocess if one is not running.
433
434
331
If a checker already exists, leave it running and do
435
332
nothing."""
436
333
# The reason for not killing a running checker is that if we
439
336
# client would inevitably timeout, since no checker would get
440
337
# a chance to run to completion. If we instead leave running
441
338
# checkers alone, the checker would have to take more time
442
# than 'timeout' for the client to be disabled, which is as it
443
# should be.
339
# than 'timeout' for the client to be declared invalid, which
340
# is as it should be.
444
341
445
342
# If a checker exists, make sure it is not a zombie
446
try:
343
if self.checker is not None:
447
344
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
345
if pid:
454
346
logger.warning("Checker was a zombie")
455
347
gobject.source_remove(self.checker_callback_tag)
462
354
command = self.checker_command % self.host
463
355
except TypeError:
464
356
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
357
escaped_attrs = dict((key, re.escape(str(val)))
358
for key, val in
359
vars(self).iteritems())
473
360
try:
474
361
command = self.checker_command % escaped_attrs
475
362
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
363
logger.error(u'Could not format string "%s":'
364
u' %s', self.checker_command, error)
478
365
return True # Try again later
479
366
self.current_checker_command = command
480
367
try:
481
logger.info("Starting checker %r for %s",
368
logger.info(u"Starting checker %r for %s",
482
369
command, self.name)
483
370
# We don't need to redirect stdout and stderr, since
484
371
# in normal mode, that is already done by daemon(),
498
385
gobject.source_remove(self.checker_callback_tag)
499
386
self.checker_callback(pid, status, command)
500
387
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
388
logger.error(u"Failed to start subprocess: %s",
502
389
error)
503
390
# Re-run this periodically if run by gobject.timeout_add
504
391
return True
510
397
self.checker_callback_tag = None
511
398
if getattr(self, "checker", None) is None:
512
399
return
513
logger.debug("Stopping checker for %(name)s", vars(self))
400
logger.debug(u"Stopping checker for %(name)s", vars(self))
514
401
try:
515
402
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
403
#os.sleep(0.5)
517
404
#if self.checker.poll() is None:
518
405
# os.kill(self.checker.pid, signal.SIGKILL)
519
406
except OSError, error:
520
407
if error.errno != errno.ESRCH: # No such process
521
408
raise
522
409
self.checker = None
523
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
526
"""Decorators for marking methods of a DBusObjectWithProperties to
527
become properties on the D-Bus.
528
529
The decorated method will be called with no arguments by "Get"
530
and with one argument by "Set".
531
532
The parameters, where they are supported, are the same as
533
dbus.service.method, except there is only "signature", since the
534
type from Get() and the type sent to Set() is the same.
535
"""
536
# Encoding deeply encoded byte arrays is not supported yet by the
537
# "Set" method, so we fail early here:
538
if byte_arrays and signature != "ay":
539
raise ValueError("Byte arrays not supported for non-'ay'"
540
" signature %r" % signature)
541
def decorator(func):
542
func._dbus_is_property = True
543
func._dbus_interface = dbus_interface
544
func._dbus_signature = signature
545
func._dbus_access = access
546
func._dbus_name = func.__name__
547
if func._dbus_name.endswith("_dbus_property"):
548
func._dbus_name = func._dbus_name[:-14]
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
550
return func
551
return decorator
552
553
554
class DBusPropertyException(dbus.exceptions.DBusException):
555
"""A base class for D-Bus property-related exceptions
556
"""
557
def __unicode__(self):
558
return unicode(str(self))
559
560
561
class DBusPropertyAccessException(DBusPropertyException):
562
"""A property's access permissions disallows an operation.
563
"""
564
pass
565
566
567
class DBusPropertyNotFound(DBusPropertyException):
568
"""An attempt was made to access a non-existing property.
569
"""
570
pass
571
572
573
class DBusObjectWithProperties(dbus.service.Object):
574
"""A D-Bus object with properties.
575
576
Classes inheriting from this can use the dbus_service_property
577
decorator to expose methods as D-Bus properties. It exposes the
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
"""
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
592
def _get_dbus_property(self, interface_name, property_name):
593
"""Returns a bound method if one exists which is a D-Bus
594
property with the specified name and interface.
595
"""
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
606
# No such property
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
612
out_signature="v")
613
def Get(self, interface_name, property_name):
614
"""Standard D-Bus property Get() method, see D-Bus standard.
615
"""
616
prop = self._get_dbus_property(interface_name, property_name)
617
if prop._dbus_access == "write":
618
raise DBusPropertyAccessException(property_name)
619
value = prop()
620
if not hasattr(value, "variant_level"):
621
return value
622
return type(value)(value, variant_level=value.variant_level+1)
623
624
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
625
def Set(self, interface_name, property_name, value):
626
"""Standard D-Bus property Set() method, see D-Bus standard.
627
"""
628
prop = self._get_dbus_property(interface_name, property_name)
629
if prop._dbus_access == "read":
630
raise DBusPropertyAccessException(property_name)
631
if prop._dbus_get_args_options["byte_arrays"]:
632
# The byte_arrays option is not supported yet on
633
# signatures other than "ay".
634
if prop._dbus_signature != "ay":
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
638
prop(value)
639
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
641
out_signature="a{sv}")
642
def GetAll(self, interface_name):
643
"""Standard D-Bus property GetAll() method, see D-Bus
644
standard.
645
646
Note: Will not include properties with access="write".
647
"""
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
650
if (interface_name
651
and interface_name != prop._dbus_interface):
652
# Interface non-empty but did not match
653
continue
654
# Ignore write-only properties
655
if prop._dbus_access == "write":
656
continue
657
value = prop()
658
if not hasattr(value, "variant_level"):
659
all[name] = value
660
continue
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
664
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
666
out_signature="s",
667
path_keyword='object_path',
668
connection_keyword='connection')
669
def Introspect(self, object_path, connection):
670
"""Standard D-Bus method, overloaded to insert property tags.
671
"""
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
674
try:
675
document = xml.dom.minidom.parseString(xmlstring)
676
def make_tag(document, name, prop):
677
e = document.createElement("property")
678
e.setAttribute("name", name)
679
e.setAttribute("type", prop._dbus_signature)
680
e.setAttribute("access", prop._dbus_access)
681
return e
682
for if_tag in document.getElementsByTagName("interface"):
683
for tag in (make_tag(document, name, prop)
684
for name, prop
685
in self._get_all_dbus_properties()
686
if prop._dbus_interface
687
== if_tag.getAttribute("name")):
688
if_tag.appendChild(tag)
689
# Add the names to the return values for the
690
# "org.freedesktop.DBus.Properties" methods
691
if (if_tag.getAttribute("name")
692
== "org.freedesktop.DBus.Properties"):
693
for cn in if_tag.getElementsByTagName("method"):
694
if cn.getAttribute("name") == "Get":
695
for arg in cn.getElementsByTagName("arg"):
696
if (arg.getAttribute("direction")
697
== "out"):
698
arg.setAttribute("name", "value")
699
elif cn.getAttribute("name") == "GetAll":
700
for arg in cn.getElementsByTagName("arg"):
701
if (arg.getAttribute("direction")
702
== "out"):
703
arg.setAttribute("name", "props")
704
xmlstring = document.toxml("utf-8")
705
document.unlink()
706
except (AttributeError, xml.dom.DOMException,
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
713
class ClientDBus(Client, DBusObjectWithProperties):
410
411
def still_valid(self):
412
"""Has the timeout not yet passed for this client?"""
413
if not getattr(self, "enabled", False):
414
return False
415
now = datetime.datetime.utcnow()
416
if self.last_checked_ok is None:
417
return now < (self.created + self.timeout)
418
else:
419
return now < (self.last_checked_ok + self.timeout)
420
421
422
class ClientDBus(Client, dbus.service.Object):
714
423
"""A Client class using D-Bus
715
716
424
Attributes:
717
dbus_object_path: dbus.ObjectPath
718
bus: dbus.SystemBus()
425
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
719
426
"""
720
721
runtime_expansions = (Client.runtime_expansions
722
+ ("dbus_object_path",))
723
724
427
# dbus.service.Object doesn't use super(), so we can't either.
725
428
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
728
self.bus = bus
429
def __init__(self, *args, **kwargs):
729
430
Client.__init__(self, *args, **kwargs)
730
431
# Only now, when this client is initialized, can it show up on
731
432
# the D-Bus
732
client_object_name = unicode(self.name).translate(
733
{ord("."): ord("_"),
734
ord("-"): ord("_")})
735
433
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
737
DBusObjectWithProperties.__init__(self, self.bus,
738
self.dbus_object_path)
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
755
756
@staticmethod
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
761
434
("/clients/"
435
+ self.name.replace(".", "_")))
436
dbus.service.Object.__init__(self, bus,
437
self.dbus_object_path)
762
438
def enable(self):
763
439
oldstate = getattr(self, "enabled", False)
764
440
r = Client.enable(self)
765
441
if oldstate != self.enabled:
766
442
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
443
self.PropertyChanged(dbus.String(u"enabled"),
768
444
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
772
variant_level=1))
445
self.PropertyChanged(dbus.String(u"last_enabled"),
446
(_datetime_to_dbus(self.last_enabled,
447
variant_level=1)))
773
448
return r
774
449
775
def disable(self, quiet = False):
450
def disable(self, signal = True):
776
451
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
452
r = Client.disable(self)
453
if signal and oldstate != self.enabled:
779
454
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
455
self.PropertyChanged(dbus.String(u"enabled"),
781
456
dbus.Boolean(False, variant_level=1))
782
457
return r
783
458
786
461
self.remove_from_connection()
787
462
except LookupError:
788
463
pass
789
if hasattr(DBusObjectWithProperties, "__del__"):
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
464
if hasattr(dbus.service.Object, "__del__"):
465
dbus.service.Object.__del__(self, *args, **kwargs)
791
466
Client.__del__(self, *args, **kwargs)
792
467
793
468
def checker_callback(self, pid, condition, command,
795
470
self.checker_callback_tag = None
796
471
self.checker = None
797
472
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
473
self.PropertyChanged(dbus.String(u"checker_running"),
799
474
dbus.Boolean(False, variant_level=1))
800
475
if os.WIFEXITED(condition):
801
476
exitstatus = os.WEXITSTATUS(condition)
816
491
r = Client.checked_ok(self, *args, **kwargs)
817
492
# Emit D-Bus signal
818
493
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
821
variant_level=1)))
822
return r
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
494
dbus.String(u"last_checked_ok"),
495
(_datetime_to_dbus(self.last_checked_ok,
496
variant_level=1)))
831
497
return r
832
498
833
499
def start_checker(self, *args, **kwargs):
843
509
# Emit D-Bus signal
844
510
self.CheckerStarted(self.current_checker_command)
845
511
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
512
dbus.String("checker_running"),
847
513
dbus.Boolean(True, variant_level=1))
848
514
return r
849
515
852
518
r = Client.stop_checker(self, *args, **kwargs)
853
519
if (old_checker is not None
854
520
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
521
self.PropertyChanged(dbus.String(u"checker_running"),
856
522
dbus.Boolean(False, variant_level=1))
857
523
return r
858
859
def _reset_approved(self):
860
self._approved = None
861
return False
862
863
def approve(self, value=True):
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
870
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
873
874
## Signals
524
525
## D-Bus methods & signals
526
_interface = u"se.bsnet.fukt.Mandos.Client"
527
528
# CheckedOK - method
529
CheckedOK = dbus.service.method(_interface)(checked_ok)
530
CheckedOK.__name__ = "CheckedOK"
875
531
876
532
# CheckerCompleted - signal
877
533
@dbus.service.signal(_interface, signature="nxs")
885
541
"D-Bus signal"
886
542
pass
887
543
544
# GetAllProperties - method
545
@dbus.service.method(_interface, out_signature="a{sv}")
546
def GetAllProperties(self):
547
"D-Bus method"
548
return dbus.Dictionary({
549
dbus.String("name"):
550
dbus.String(self.name, variant_level=1),
551
dbus.String("fingerprint"):
552
dbus.String(self.fingerprint, variant_level=1),
553
dbus.String("host"):
554
dbus.String(self.host, variant_level=1),
555
dbus.String("created"):
556
_datetime_to_dbus(self.created, variant_level=1),
557
dbus.String("last_enabled"):
558
(_datetime_to_dbus(self.last_enabled,
559
variant_level=1)
560
if self.last_enabled is not None
561
else dbus.Boolean(False, variant_level=1)),
562
dbus.String("enabled"):
563
dbus.Boolean(self.enabled, variant_level=1),
564
dbus.String("last_checked_ok"):
565
(_datetime_to_dbus(self.last_checked_ok,
566
variant_level=1)
567
if self.last_checked_ok is not None
568
else dbus.Boolean (False, variant_level=1)),
569
dbus.String("timeout"):
570
dbus.UInt64(self.timeout_milliseconds(),
571
variant_level=1),
572
dbus.String("interval"):
573
dbus.UInt64(self.interval_milliseconds(),
574
variant_level=1),
575
dbus.String("checker"):
576
dbus.String(self.checker_command,
577
variant_level=1),
578
dbus.String("checker_running"):
579
dbus.Boolean(self.checker is not None,
580
variant_level=1),
581
dbus.String("object_path"):
582
dbus.ObjectPath(self.dbus_object_path,
583
variant_level=1)
584
}, signature="sv")
585
586
# IsStillValid - method
587
@dbus.service.method(_interface, out_signature="b")
588
def IsStillValid(self):
589
return self.still_valid()
590
888
591
# PropertyChanged - signal
889
592
@dbus.service.signal(_interface, signature="sv")
890
593
def PropertyChanged(self, property, value):
891
594
"D-Bus signal"
892
595
pass
893
596
894
# GotSecret - signal
597
# ReceivedSecret - signal
895
598
@dbus.service.signal(_interface)
896
def GotSecret(self):
897
"""D-Bus signal
898
Is sent after a successful transfer of secret from the Mandos
899
server to mandos-client
900
"""
599
def ReceivedSecret(self):
600
"D-Bus signal"
901
601
pass
902
602
903
603
# Rejected - signal
904
@dbus.service.signal(_interface, signature="s")
905
def Rejected(self, reason):
604
@dbus.service.signal(_interface)
605
def Rejected(self):
906
606
"D-Bus signal"
907
607
pass
908
608
909
# NeedApproval - signal
910
@dbus.service.signal(_interface, signature="tb")
911
def NeedApproval(self, timeout, default):
912
"D-Bus signal"
913
return self.need_approval()
914
915
## Methods
916
917
# Approve - method
918
@dbus.service.method(_interface, in_signature="b")
919
def Approve(self, value):
920
self.approve(value)
921
922
# CheckedOK - method
923
@dbus.service.method(_interface)
924
def CheckedOK(self):
925
return self.checked_ok()
609
# SetChecker - method
610
@dbus.service.method(_interface, in_signature="s")
611
def SetChecker(self, checker):
612
"D-Bus setter method"
613
self.checker_command = checker
614
# Emit D-Bus signal
615
self.PropertyChanged(dbus.String(u"checker"),
616
dbus.String(self.checker_command,
617
variant_level=1))
618
619
# SetHost - method
620
@dbus.service.method(_interface, in_signature="s")
621
def SetHost(self, host):
622
"D-Bus setter method"
623
self.host = host
624
# Emit D-Bus signal
625
self.PropertyChanged(dbus.String(u"host"),
626
dbus.String(self.host, variant_level=1))
627
628
# SetInterval - method
629
@dbus.service.method(_interface, in_signature="t")
630
def SetInterval(self, milliseconds):
631
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
632
# Emit D-Bus signal
633
self.PropertyChanged(dbus.String(u"interval"),
634
(dbus.UInt64(self.interval_milliseconds(),
635
variant_level=1)))
636
637
# SetSecret - method
638
@dbus.service.method(_interface, in_signature="ay",
639
byte_arrays=True)
640
def SetSecret(self, secret):
641
"D-Bus setter method"
642
self.secret = str(secret)
643
644
# SetTimeout - method
645
@dbus.service.method(_interface, in_signature="t")
646
def SetTimeout(self, milliseconds):
647
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
648
# Emit D-Bus signal
649
self.PropertyChanged(dbus.String(u"timeout"),
650
(dbus.UInt64(self.timeout_milliseconds(),
651
variant_level=1)))
926
652
927
653
# Enable - method
928
@dbus.service.method(_interface)
929
def Enable(self):
930
"D-Bus method"
931
self.enable()
654
Enable = dbus.service.method(_interface)(enable)
655
Enable.__name__ = "Enable"
932
656
933
657
# StartChecker - method
934
658
@dbus.service.method(_interface)
943
667
self.disable()
944
668
945
669
# StopChecker - method
946
@dbus.service.method(_interface)
947
def StopChecker(self):
948
self.stop_checker()
949
950
## Properties
951
952
# ApprovalPending - property
953
@dbus_service_property(_interface, signature="b", access="read")
954
def ApprovalPending_dbus_property(self):
955
return dbus.Boolean(bool(self.approvals_pending))
956
957
# ApprovedByDefault - property
958
@dbus_service_property(_interface, signature="b",
959
access="readwrite")
960
def ApprovedByDefault_dbus_property(self, value=None):
961
if value is None: # get
962
return dbus.Boolean(self.approved_by_default)
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
967
968
# ApprovalDelay - property
969
@dbus_service_property(_interface, signature="t",
970
access="readwrite")
971
def ApprovalDelay_dbus_property(self, value=None):
972
if value is None: # get
973
return dbus.UInt64(self.approval_delay_milliseconds())
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
978
979
# ApprovalDuration - property
980
@dbus_service_property(_interface, signature="t",
981
access="readwrite")
982
def ApprovalDuration_dbus_property(self, value=None):
983
if value is None: # get
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
990
991
# Name - property
992
@dbus_service_property(_interface, signature="s", access="read")
993
def Name_dbus_property(self):
994
return dbus.String(self.name)
995
996
# Fingerprint - property
997
@dbus_service_property(_interface, signature="s", access="read")
998
def Fingerprint_dbus_property(self):
999
return dbus.String(self.fingerprint)
1000
1001
# Host - property
1002
@dbus_service_property(_interface, signature="s",
1003
access="readwrite")
1004
def Host_dbus_property(self, value=None):
1005
if value is None: # get
1006
return dbus.String(self.host)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1011
1012
# Created - property
1013
@dbus_service_property(_interface, signature="s", access="read")
1014
def Created_dbus_property(self):
1015
return dbus.String(self._datetime_to_dbus(self.created))
1016
1017
# LastEnabled - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def LastEnabled_dbus_property(self):
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1023
1024
# Enabled - property
1025
@dbus_service_property(_interface, signature="b",
1026
access="readwrite")
1027
def Enabled_dbus_property(self, value=None):
1028
if value is None: # get
1029
return dbus.Boolean(self.enabled)
1030
if value:
1031
self.enable()
1032
else:
1033
self.disable()
1034
1035
# LastCheckedOK - property
1036
@dbus_service_property(_interface, signature="s",
1037
access="readwrite")
1038
def LastCheckedOK_dbus_property(self, value=None):
1039
if value is not None:
1040
self.checked_ok()
1041
return
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1046
1047
# LastApprovalRequest - property
1048
@dbus_service_property(_interface, signature="s", access="read")
1049
def LastApprovalRequest_dbus_property(self):
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1055
1056
# Timeout - property
1057
@dbus_service_property(_interface, signature="t",
1058
access="readwrite")
1059
def Timeout_dbus_property(self, value=None):
1060
if value is None: # get
1061
return dbus.UInt64(self.timeout_milliseconds())
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1083
1084
# Interval - property
1085
@dbus_service_property(_interface, signature="t",
1086
access="readwrite")
1087
def Interval_dbus_property(self, value=None):
1088
if value is None: # get
1089
return dbus.UInt64(self.interval_milliseconds())
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1094
if getattr(self, "checker_initiator_tag", None) is None:
1095
return
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
1102
# Checker - property
1103
@dbus_service_property(_interface, signature="s",
1104
access="readwrite")
1105
def Checker_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.String(self.checker_command)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1113
1114
# CheckerRunning - property
1115
@dbus_service_property(_interface, signature="b",
1116
access="readwrite")
1117
def CheckerRunning_dbus_property(self, value=None):
1118
if value is None: # get
1119
return dbus.Boolean(self.checker is not None)
1120
if value:
1121
self.start_checker()
1122
else:
1123
self.stop_checker()
1124
1125
# ObjectPath - property
1126
@dbus_service_property(_interface, signature="o", access="read")
1127
def ObjectPath_dbus_property(self):
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1129
1130
# Secret = property
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1133
def Secret_dbus_property(self, value):
1134
self.secret = str(value)
670
StopChecker = dbus.service.method(_interface)(stop_checker)
671
StopChecker.__name__ = "StopChecker"
1135
672
1136
673
del _interface
1137
674
1138
675
1139
class ProxyClient(object):
1140
def __init__(self, child_pipe, fpr, address):
1141
self._pipe = child_pipe
1142
self._pipe.send(('init', fpr, address))
1143
if not self._pipe.recv():
1144
raise KeyError()
1145
1146
def __getattribute__(self, name):
1147
if(name == '_pipe'):
1148
return super(ProxyClient, self).__getattribute__(name)
1149
self._pipe.send(('getattr', name))
1150
data = self._pipe.recv()
1151
if data[0] == 'data':
1152
return data[1]
1153
if data[0] == 'function':
1154
def func(*args, **kwargs):
1155
self._pipe.send(('funcall', name, args, kwargs))
1156
return self._pipe.recv()[1]
1157
return func
1158
1159
def __setattr__(self, name, value):
1160
if(name == '_pipe'):
1161
return super(ProxyClient, self).__setattr__(name, value)
1162
self._pipe.send(('setattr', name, value))
1163
1164
1165
class ClientHandler(socketserver.BaseRequestHandler, object):
1166
"""A class to handle client connections.
1167
1168
Instantiated once for each connection to handle it.
676
class TCP_handler(SocketServer.BaseRequestHandler, object):
677
"""A TCP request handler class.
678
Instantiated by IPv6_TCPServer for each request to handle it.
1169
679
Note: This will run in its own forked process."""
1170
680
1171
681
def handle(self):
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1173
logger.info("TCP connection from: %s",
1174
unicode(self.client_address))
1175
logger.debug("Pipe FD: %d",
1176
self.server.child_pipe.fileno())
1177
682
logger.info(u"TCP connection from: %s",
683
unicode(self.client_address))
684
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
685
# Open IPC pipe to parent process
686
with closing(os.fdopen(self.server.pipe[1], "w", 1)) as ipc:
1178
687
session = (gnutls.connection
1179
688
.ClientSession(self.request,
1180
689
gnutls.connection
1181
690
.X509Credentials()))
1182
691
692
line = self.request.makefile().readline()
693
logger.debug(u"Protocol version: %r", line)
694
try:
695
if int(line.strip().split()[0]) > 1:
696
raise RuntimeError
697
except (ValueError, IndexError, RuntimeError), error:
698
logger.error(u"Unknown protocol version: %s", error)
699
return
700
1183
701
# Note: gnutls.connection.X509Credentials is really a
1184
702
# generic GnuTLS certificate credentials object so long as
1185
703
# no X.509 keys are added to it. Therefore, we can use it
1186
704
# here despite using OpenPGP certificates.
1187
705
1188
706
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1189
# "+AES-256-CBC", "+SHA1",
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1191
# "+DHE-DSS"))
707
# "+AES-256-CBC", "+SHA1",
708
# "+COMP-NULL", "+CTYPE-OPENPGP",
709
# "+DHE-DSS"))
1192
710
# Use a fallback default, since this MUST be set.
1193
priority = self.server.gnutls_priority
1194
if priority is None:
1195
priority = "NORMAL"
711
priority = self.server.settings.get("priority", "NORMAL")
1196
712
(gnutls.library.functions
1197
713
.gnutls_priority_set_direct(session._c_object,
1198
714
priority, None))
1199
1200
# Start communication using the Mandos protocol
1201
# Get protocol number
1202
line = self.request.makefile().readline()
1203
logger.debug("Protocol version: %r", line)
1204
try:
1205
if int(line.strip().split()[0]) > 1:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
1208
logger.error("Unknown protocol version: %s", error)
1209
return
1210
1211
# Start GnuTLS connection
715
1212
716
try:
1213
717
session.handshake()
1214
718
except gnutls.errors.GNUTLSError, error:
1215
logger.warning("Handshake failed: %s", error)
719
logger.warning(u"Handshake failed: %s", error)
1216
720
# Do not run session.bye() here: the session is not
1217
721
# established. Just abandon the request.
1218
722
return
1219
logger.debug("Handshake succeeded")
1220
1221
approval_required = False
723
logger.debug(u"Handshake succeeded")
1222
724
try:
1223
try:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1227
logger.warning("Bad certificate: %s", error)
1228
return
1229
logger.debug("Fingerprint: %s", fpr)
1230
1231
try:
1232
client = ProxyClient(child_pipe, fpr,
1233
self.client_address)
1234
except KeyError:
1235
return
1236
1237
if client.approval_delay:
1238
delay = client.approval_delay
1239
client.approvals_pending += 1
1240
approval_required = True
1241
1242
while True:
1243
if not client.enabled:
1244
logger.warning("Client %s is disabled",
1245
client.name)
1246
if self.server.use_dbus:
1247
# Emit D-Bus signal
1248
client.Rejected("Disabled")
1249
return
1250
1251
if client._approved or not client.approval_delay:
1252
#We are approved or approval is disabled
1253
break
1254
elif client._approved is None:
1255
logger.info("Client %s needs approval",
1256
client.name)
1257
if self.server.use_dbus:
1258
# Emit D-Bus signal
1259
client.NeedApproval(
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1262
else:
1263
logger.warning("Client %s was not approved",
1264
client.name)
1265
if self.server.use_dbus:
1266
# Emit D-Bus signal
1267
client.Rejected("Denied")
1268
return
1269
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1272
time = datetime.datetime.now()
1273
client.changedstate.acquire()
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1275
client.changedstate.release()
1276
time2 = datetime.datetime.now()
1277
if (time2 - time) >= delay:
1278
if not client.approved_by_default:
1279
logger.warning("Client %s timed out while"
1280
" waiting for approval",
1281
client.name)
1282
if self.server.use_dbus:
1283
# Emit D-Bus signal
1284
client.Rejected("Approval timed out")
1285
return
1286
else:
1287
break
1288
else:
1289
delay -= time2 - time
1290
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
1302
1303
logger.info("Sending secret to %s", client.name)
1304
# bump the timeout as if seen
1305
client.checked_ok()
1306
if self.server.use_dbus:
1307
# Emit D-Bus signal
1308
client.GotSecret()
725
fpr = self.fingerprint(self.peer_certificate(session))
726
except (TypeError, gnutls.errors.GNUTLSError), error:
727
logger.warning(u"Bad certificate: %s", error)
728
session.bye()
729
return
730
logger.debug(u"Fingerprint: %s", fpr)
1309
731
1310
finally:
1311
if approval_required:
1312
client.approvals_pending -= 1
1313
try:
1314
session.bye()
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
732
for c in self.server.clients:
733
if c.fingerprint == fpr:
734
client = c
735
break
736
else:
737
ipc.write("NOTFOUND %s\n" % fpr)
738
session.bye()
739
return
740
# Have to check if client.still_valid(), since it is
741
# possible that the client timed out while establishing
742
# the GnuTLS session.
743
if not client.still_valid():
744
ipc.write("INVALID %s\n" % client.name)
745
session.bye()
746
return
747
ipc.write("SENDING %s\n" % client.name)
748
sent_size = 0
749
while sent_size < len(client.secret):
750
sent = session.send(client.secret[sent_size:])
751
logger.debug(u"Sent: %d, remaining: %d",
752
sent, len(client.secret)
753
- (sent_size + sent))
754
sent_size += sent
755
session.bye()
1317
756
1318
757
@staticmethod
1319
758
def peer_certificate(session):
1375
814
# Convert the buffer to a Python bytestring
1376
815
fpr = ctypes.string_at(buf, buf_len.value)
1377
816
# Convert the bytestring to hexadecimal notation
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
817
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1379
818
return hex_fpr
1380
819
1381
820
1382
class MultiprocessingMixIn(object):
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1384
def sub_process_main(self, request, address):
1385
try:
1386
self.finish_request(request, address)
1387
except:
1388
self.handle_error(request, address)
1389
self.close_request(request)
1390
1391
def process_request(self, request, address):
1392
"""Start a new process to process the request."""
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1395
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1397
""" adds a pipe to the MixIn """
821
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
822
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
823
Assumes a gobject.MainLoop event loop.
824
"""
1398
825
def process_request(self, request, client_address):
1399
"""Overrides and wraps the original process_request().
1400
1401
This function creates a new pipe in self.pipe
826
"""This overrides and wraps the original process_request().
827
This function creates a new pipe in self.pipe
1402
828
"""
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1404
1405
super(MultiprocessingMixInWithPipe,
829
self.pipe = os.pipe()
830
super(ForkingMixInWithPipe,
1406
831
self).process_request(request, client_address)
1407
self.child_pipe.close()
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
832
os.close(self.pipe[1]) # close write end
833
# Call "handle_ipc" for both data and EOF events
834
gobject.io_add_watch(self.pipe[0],
835
gobject.IO_IN | gobject.IO_HUP,
836
self.handle_ipc)
837
def handle_ipc(source, condition):
1411
838
"""Dummy function; override as necessary"""
1412
raise NotImplementedError
1413
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1415
socketserver.TCPServer, object):
839
os.close(source)
840
return False
841
842
843
class IPv6_TCPServer(ForkingMixInWithPipe,
844
SocketServer.TCPServer, object):
1416
845
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1417
1418
846
Attributes:
847
settings: Server settings
848
clients: Set() of Client objects
1419
849
enabled: Boolean; whether this server is activated yet
1420
interface: None or a network interface name (string)
1421
use_ipv6: Boolean; to use IPv6 or not
1422
850
"""
1423
def __init__(self, server_address, RequestHandlerClass,
1424
interface=None, use_ipv6=True):
1425
self.interface = interface
1426
if use_ipv6:
1427
self.address_family = socket.AF_INET6
1428
socketserver.TCPServer.__init__(self, server_address,
1429
RequestHandlerClass)
851
address_family = socket.AF_INET6
852
def __init__(self, *args, **kwargs):
853
if "settings" in kwargs:
854
self.settings = kwargs["settings"]
855
del kwargs["settings"]
856
if "clients" in kwargs:
857
self.clients = kwargs["clients"]
858
del kwargs["clients"]
859
if "use_ipv6" in kwargs:
860
if not kwargs["use_ipv6"]:
861
self.address_family = socket.AF_INET
862
del kwargs["use_ipv6"]
863
self.enabled = False
864
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1430
865
def server_bind(self):
1431
866
"""This overrides the normal server_bind() function
1432
867
to bind to an interface if one was specified, and also NOT to
1433
868
bind to an address or port if they were not specified."""
1434
if self.interface is not None:
1435
if SO_BINDTODEVICE is None:
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
1438
self.interface)
1439
else:
1440
try:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
1453
self.interface)
1454
else:
1455
raise
869
if self.settings["interface"]:
870
# 25 is from /usr/include/asm-i486/socket.h
871
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
872
try:
873
self.socket.setsockopt(socket.SOL_SOCKET,
874
SO_BINDTODEVICE,
875
self.settings["interface"])
876
except socket.error, error:
877
if error[0] == errno.EPERM:
878
logger.error(u"No permission to"
879
u" bind to interface %s",
880
self.settings["interface"])
881
else:
882
raise
1456
883
# Only bind(2) the socket if we really need to.
1457
884
if self.server_address[0] or self.server_address[1]:
1458
885
if not self.server_address[0]:
1465
892
elif not self.server_address[1]:
1466
893
self.server_address = (self.server_address[0],
1467
894
0)
1468
# if self.interface:
895
# if self.settings["interface"]:
1469
896
# self.server_address = (self.server_address[0],
1470
897
# 0, # port
1471
898
# 0, # flowinfo
1472
899
# if_nametoindex
1473
# (self.interface))
1474
return socketserver.TCPServer.server_bind(self)
1475
1476
1477
class MandosServer(IPv6_TCPServer):
1478
"""Mandos server.
1479
1480
Attributes:
1481
clients: set of Client objects
1482
gnutls_priority GnuTLS priority string
1483
use_dbus: Boolean; to emit D-Bus signals or not
1484
1485
Assumes a gobject.MainLoop event loop.
1486
"""
1487
def __init__(self, server_address, RequestHandlerClass,
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
1490
self.enabled = False
1491
self.clients = clients
1492
if self.clients is None:
1493
self.clients = set()
1494
self.use_dbus = use_dbus
1495
self.gnutls_priority = gnutls_priority
1496
IPv6_TCPServer.__init__(self, server_address,
1497
RequestHandlerClass,
1498
interface = interface,
1499
use_ipv6 = use_ipv6)
900
# (self.settings
901
# ["interface"]))
902
return super(IPv6_TCPServer, self).server_bind()
1500
903
def server_activate(self):
1501
904
if self.enabled:
1502
return socketserver.TCPServer.server_activate(self)
905
return super(IPv6_TCPServer, self).server_activate()
1503
906
def enable(self):
1504
907
self.enabled = True
1505
def add_pipe(self, parent_pipe):
1506
# Call "handle_ipc" for both data and EOF events
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
1513
client_object=None):
908
def handle_ipc(self, source, condition, file_objects={}):
1514
909
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
910
gobject.IO_IN: "IN", # There is data to read.
1516
911
gobject.IO_OUT: "OUT", # Data can be written (without
1517
# blocking).
912
# blocking).
1518
913
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
914
gobject.IO_ERR: "ERR", # Error condition.
1520
915
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1522
# sockets).
916
# broken, usually for pipes and
917
# sockets).
1523
918
}
1524
919
conditions_string = ' | '.join(name
1525
920
for cond, name in
1526
921
condition_names.iteritems()
1527
922
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1530
return False
1531
1532
# Read a request from the child
1533
request = parent_pipe.recv()
1534
command = request[0]
1535
1536
if command == 'init':
1537
fpr = request[1]
1538
address = request[2]
1539
1540
for c in self.clients:
1541
if c.fingerprint == fpr:
1542
client = c
1543
break
1544
else:
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
1547
if self.use_dbus:
1548
# Emit D-Bus signal
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
1550
parent_pipe.send(False)
1551
return False
1552
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
1558
parent_pipe.send(True)
1559
# remove the old hook in favor of the new above hook on same fileno
1560
return False
1561
if command == 'funcall':
1562
funcname = request[1]
1563
args = request[2]
1564
kwargs = request[3]
1565
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
1568
if command == 'getattr':
1569
attrname = request[1]
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
1572
else:
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1574
1575
if command == 'setattr':
1576
attrname = request[1]
1577
value = request[2]
1578
setattr(client_object, attrname, value)
1579
923
logger.debug("Handling IPC: FD = %d, condition = %s", source,
924
conditions_string)
925
926
# Turn the pipe file descriptor into a Python file object
927
if source not in file_objects:
928
file_objects[source] = os.fdopen(source, "r", 1)
929
930
# Read a line from the file object
931
cmdline = file_objects[source].readline()
932
if not cmdline: # Empty line means end of file
933
# close the IPC pipe
934
file_objects[source].close()
935
del file_objects[source]
936
937
# Stop calling this function
938
return False
939
940
logger.debug("IPC command: %r", cmdline)
941
942
# Parse and act on command
943
cmd, args = cmdline.rstrip("\r\n").split(None, 1)
944
945
if cmd == "NOTFOUND":
946
logger.warning(u"Client not found for fingerprint: %s",
947
args)
948
if self.settings["use_dbus"]:
949
# Emit D-Bus signal
950
mandos_dbus_service.ClientNotFound(args)
951
elif cmd == "INVALID":
952
for client in self.clients:
953
if client.name == args:
954
logger.warning(u"Client %s is invalid", args)
955
if self.settings["use_dbus"]:
956
# Emit D-Bus signal
957
client.Rejected()
958
break
959
else:
960
logger.error(u"Unknown client %s is invalid", args)
961
elif cmd == "SENDING":
962
for client in self.clients:
963
if client.name == args:
964
logger.info(u"Sending secret to %s", client.name)
965
client.checked_ok()
966
if self.settings["use_dbus"]:
967
# Emit D-Bus signal
968
client.ReceivedSecret()
969
break
970
else:
971
logger.error(u"Sending secret to unknown client %s",
972
args)
973
else:
974
logger.error("Unknown IPC command: %r", cmdline)
975
976
# Keep calling this function
1580
977
return True
1581
978
1582
979
1591
988
datetime.timedelta(0, 3600)
1592
989
>>> string_to_delta('24h')
1593
990
datetime.timedelta(1)
1594
>>> string_to_delta('1w')
991
>>> string_to_delta(u'1w')
1595
992
datetime.timedelta(7)
1596
993
>>> string_to_delta('5m 30s')
1597
994
datetime.timedelta(0, 330)
1601
998
try:
1602
999
suffix = unicode(s[-1])
1603
1000
value = int(s[:-1])
1604
if suffix == "d":
1001
if suffix == u"d":
1605
1002
delta = datetime.timedelta(value)
1606
elif suffix == "s":
1003
elif suffix == u"s":
1607
1004
delta = datetime.timedelta(0, value)
1608
elif suffix == "m":
1005
elif suffix == u"m":
1609
1006
delta = datetime.timedelta(0, 0, 0, 0, value)
1610
elif suffix == "h":
1007
elif suffix == u"h":
1611
1008
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1612
elif suffix == "w":
1009
elif suffix == u"w":
1613
1010
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1614
1011
else:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
1617
raise ValueError(*(e.args))
1012
raise ValueError
1013
except (ValueError, IndexError):
1014
raise ValueError
1618
1015
timevalue += delta
1619
1016
return timevalue
1620
1017
1621
1018
1019
def server_state_changed(state):
1020
"""Derived from the Avahi example code"""
1021
if state == avahi.SERVER_COLLISION:
1022
logger.error(u"Zeroconf server name collision")
1023
service.remove()
1024
elif state == avahi.SERVER_RUNNING:
1025
service.add()
1026
1027
1028
def entry_group_state_changed(state, error):
1029
"""Derived from the Avahi example code"""
1030
logger.debug(u"Avahi state change: %i", state)
1031
1032
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1033
logger.debug(u"Zeroconf service established.")
1034
elif state == avahi.ENTRY_GROUP_COLLISION:
1035
logger.warning(u"Zeroconf service name collision.")
1036
service.rename()
1037
elif state == avahi.ENTRY_GROUP_FAILURE:
1038
logger.critical(u"Avahi: Error in group state changed %s",
1039
unicode(error))
1040
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1041
1622
1042
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1624
1625
Note: This function cannot accept a unicode string."""
1043
"""Call the C function if_nametoindex(), or equivalent"""
1626
1044
global if_nametoindex
1627
1045
try:
1628
1046
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
1047
(ctypes.util.find_library("c"))
1630
1048
.if_nametoindex)
1631
1049
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1050
if "struct" not in sys.modules:
1051
import struct
1052
if "fcntl" not in sys.modules:
1053
import fcntl
1633
1054
def if_nametoindex(interface):
1634
1055
"Get an interface index the hard way, i.e. using fcntl()"
1635
1056
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1057
with closing(socket.socket()) as s:
1637
1058
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1639
interface))
1640
interface_index = struct.unpack(str("I"),
1641
ifreq[16:20])[0]
1059
struct.pack("16s16x", interface))
1060
interface_index = struct.unpack("I", ifreq[16:20])[0]
1642
1061
return interface_index
1643
1062
return if_nametoindex(interface)
1644
1063
1645
1064
1646
1065
def daemon(nochdir = False, noclose = False):
1647
1066
"""See daemon(3). Standard BSD Unix function.
1648
1649
1067
This should really exist as os.daemon, but it doesn't (yet)."""
1650
1068
if os.fork():
1651
1069
sys.exit()
1659
1077
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1660
1078
if not stat.S_ISCHR(os.fstat(null).st_mode):
1661
1079
raise OSError(errno.ENODEV,
1662
"%s not a character device"
1663
% os.path.devnull)
1080
"/dev/null not a character device")
1664
1081
os.dup2(null, sys.stdin.fileno())
1665
1082
os.dup2(null, sys.stdout.fileno())
1666
1083
os.dup2(null, sys.stderr.fileno())
1670
1087
1671
1088
def main():
1672
1089
1673
##################################################################
1090
######################################################################
1674
1091
# Parsing of options, both command line and config file
1675
1092
1676
1093
parser = optparse.OptionParser(version = "%%prog %s" % version)
1685
1102
parser.add_option("--debug", action="store_true",
1686
1103
help="Debug mode; run in foreground and log to"
1687
1104
" terminal")
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
1105
parser.add_option("--priority", type="string", help="GnuTLS"
1691
1106
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1107
parser.add_option("--servicename", type="string", metavar="NAME",
1108
help="Zeroconf service name")
1694
1109
parser.add_option("--configdir", type="string",
1695
1110
default="/etc/mandos", metavar="DIR",
1696
1111
help="Directory to search for configuration"
1697
1112
" files")
1698
1113
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1114
dest="use_dbus",
1115
help="Do not provide D-Bus system bus"
1116
" interface")
1701
1117
parser.add_option("--no-ipv6", action="store_false",
1702
1118
dest="use_ipv6", help="Do not use IPv6")
1703
1119
options = parser.parse_args()[0]
1717
1133
"servicename": "Mandos",
1718
1134
"use_dbus": "True",
1719
1135
"use_ipv6": "True",
1720
"debuglevel": "",
1721
1136
}
1722
1137
1723
1138
# Parse config file for server-global settings
1724
server_config = configparser.SafeConfigParser(server_defaults)
1139
server_config = ConfigParser.SafeConfigParser(server_defaults)
1725
1140
del server_defaults
1726
server_config.read(os.path.join(options.configdir,
1727
"mandos.conf"))
1141
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1728
1142
# Convert the SafeConfigParser object to a dict
1729
1143
server_settings = server_config.defaults()
1730
1144
# Use the appropriate methods on the non-string config options
1731
for option in ("debug", "use_dbus", "use_ipv6"):
1732
server_settings[option] = server_config.getboolean("DEFAULT",
1733
option)
1145
server_settings["debug"] = server_config.getboolean("DEFAULT",
1146
"debug")
1147
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1148
"use_dbus")
1149
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1150
"use_ipv6")
1734
1151
if server_settings["port"]:
1735
1152
server_settings["port"] = server_config.getint("DEFAULT",
1736
1153
"port")
1740
1157
# options, if set.
1741
1158
for option in ("interface", "address", "port", "debug",
1742
1159
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
1160
"use_dbus", "use_ipv6"):
1744
1161
value = getattr(options, option)
1745
1162
if value is not None:
1746
1163
server_settings[option] = value
1747
1164
del options
1748
# Force all strings to be unicode
1749
for option in server_settings.keys():
1750
if type(server_settings[option]) is str:
1751
server_settings[option] = unicode(server_settings[option])
1752
1165
# Now we have our good server settings in "server_settings"
1753
1166
1754
1167
##################################################################
1755
1168
1756
1169
# For convenience
1757
1170
debug = server_settings["debug"]
1758
debuglevel = server_settings["debuglevel"]
1759
1171
use_dbus = server_settings["use_dbus"]
1760
1172
use_ipv6 = server_settings["use_ipv6"]
1761
1173
1174
if not debug:
1175
syslogger.setLevel(logging.WARNING)
1176
console.setLevel(logging.WARNING)
1177
1762
1178
if server_settings["servicename"] != "Mandos":
1763
1179
syslogger.setFormatter(logging.Formatter
1764
1180
('Mandos (%s) [%%(process)d]:'
1770
1186
"interval": "5m",
1771
1187
"checker": "fping -q -- %%(host)s",
1772
1188
"host": "",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1775
1189
}
1776
client_config = configparser.SafeConfigParser(client_defaults)
1190
client_config = ConfigParser.SafeConfigParser(client_defaults)
1777
1191
client_config.read(os.path.join(server_settings["configdir"],
1778
1192
"clients.conf"))
1779
1193
1780
1194
global mandos_dbus_service
1781
1195
mandos_dbus_service = None
1782
1196
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1785
ClientHandler,
1786
interface=(server_settings["interface"]
1787
or None),
1788
use_ipv6=use_ipv6,
1789
gnutls_priority=
1790
server_settings["priority"],
1791
use_dbus=use_dbus)
1792
if not debug:
1793
pidfilename = "/var/run/mandos.pid"
1794
try:
1795
pidfile = open(pidfilename, "w")
1796
except IOError:
1797
logger.error("Could not open file %r", pidfilename)
1197
clients = Set()
1198
tcp_server = IPv6_TCPServer((server_settings["address"],
1199
server_settings["port"]),
1200
TCP_handler,
1201
settings=server_settings,
1202
clients=clients, use_ipv6=use_ipv6)
1203
pidfilename = "/var/run/mandos.pid"
1204
try:
1205
pidfile = open(pidfilename, "w")
1206
except IOError:
1207
logger.error("Could not open file %r", pidfilename)
1798
1208
1799
1209
try:
1800
1210
uid = pwd.getpwnam("_mandos").pw_uid
1806
1216
except KeyError:
1807
1217
try:
1808
1218
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1219
gid = pwd.getpwnam("nogroup").pw_gid
1810
1220
except KeyError:
1811
1221
uid = 65534
1812
1222
gid = 65534
1817
1227
if error[0] != errno.EPERM:
1818
1228
raise error
1819
1229
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1823
if debuglevel:
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
1827
1230
# Enable all possible GnuTLS debugging
1828
1231
if debug:
1829
# Enable all possible GnuTLS debugging
1830
1831
1232
# "Use a log level over 10 to enable all debugging options."
1832
1233
# - GnuTLS manual
1833
1234
gnutls.library.functions.gnutls_global_set_log_level(11)
1838
1239
1839
1240
(gnutls.library.functions
1840
1241
.gnutls_global_set_log_function(debug_gnutls))
1841
1842
# Redirect stdin so all checkers get /dev/null
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1844
os.dup2(null, sys.stdin.fileno())
1845
if null > 2:
1846
os.close(null)
1847
else:
1848
# No console logging
1849
logger.removeHandler(console)
1850
1242
1851
# Need to fork before connecting to D-Bus
1852
if not debug:
1853
# Close all input and output, do double fork, etc.
1854
daemon()
1243
global service
1244
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1245
service = AvahiService(name = server_settings["servicename"],
1246
servicetype = "_mandos._tcp",
1247
protocol = protocol)
1248
if server_settings["interface"]:
1249
service.interface = (if_nametoindex
1250
(server_settings["interface"]))
1855
1251
1856
1252
global main_loop
1253
global bus
1254
global server
1857
1255
# From the Avahi example code
1858
1256
DBusGMainLoop(set_as_default=True )
1859
1257
main_loop = gobject.MainLoop()
1860
1258
bus = dbus.SystemBus()
1259
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1260
avahi.DBUS_PATH_SERVER),
1261
avahi.DBUS_INTERFACE_SERVER)
1861
1262
# End of Avahi example code
1862
1263
if use_dbus:
1863
try:
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
1868
use_dbus = False
1869
server_settings["use_dbus"] = False
1870
tcp_server.use_dbus = False
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1874
protocol = protocol, bus = bus)
1875
if server_settings["interface"]:
1876
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
1878
1879
global multiprocessing_manager
1880
multiprocessing_manager = multiprocessing.Manager()
1264
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1881
1265
1882
1266
client_class = Client
1883
1267
if use_dbus:
1884
client_class = functools.partial(ClientDBus, bus = bus)
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1890
}
1891
for name, value in config.items(section):
1892
try:
1893
yield (name, special_settings[name]())
1894
except KeyError:
1895
yield (name, value)
1896
1897
tcp_server.clients.update(set(
1268
client_class = ClientDBus
1269
clients.update(Set(
1898
1270
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1271
config= dict(client_config.items(section)))
1901
1272
for section in client_config.sections()))
1902
if not tcp_server.clients:
1903
logger.warning("No clients defined")
1273
if not clients:
1274
logger.warning(u"No clients defined")
1275
1276
if debug:
1277
# Redirect stdin so all checkers get /dev/null
1278
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1279
os.dup2(null, sys.stdin.fileno())
1280
if null > 2:
1281
os.close(null)
1282
else:
1283
# No console logging
1284
logger.removeHandler(console)
1285
# Close all input and output, do double fork, etc.
1286
daemon()
1287
1288
try:
1289
with closing(pidfile):
1290
pid = os.getpid()
1291
pidfile.write(str(pid) + "\n")
1292
del pidfile
1293
except IOError:
1294
logger.error(u"Could not write to file %r with PID %d",
1295
pidfilename, pid)
1296
except NameError:
1297
# "pidfile" was never created
1298
pass
1299
del pidfilename
1300
1301
def cleanup():
1302
"Cleanup function; run on exit"
1303
global group
1304
# From the Avahi example code
1305
if not group is None:
1306
group.Free()
1307
group = None
1308
# End of Avahi example code
1904
1309
1310
while clients:
1311
client = clients.pop()
1312
client.disable_hook = None
1313
client.disable()
1314
1315
atexit.register(cleanup)
1316
1905
1317
if not debug:
1906
try:
1907
with pidfile:
1908
pid = os.getpid()
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1910
del pidfile
1911
except IOError:
1912
logger.error("Could not write to file %r with PID %d",
1913
pidfilename, pid)
1914
except NameError:
1915
# "pidfile" was never created
1916
pass
1917
del pidfilename
1918
1919
1318
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
1921
1319
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1922
1320
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1923
1321
1926
1324
"""A D-Bus proxy object"""
1927
1325
def __init__(self):
1928
1326
dbus.service.Object.__init__(self, bus, "/")
1929
_interface = "se.bsnet.fukt.Mandos"
1327
_interface = u"se.bsnet.fukt.Mandos"
1930
1328
1931
@dbus.service.signal(_interface, signature="o")
1932
def ClientAdded(self, objpath):
1329
@dbus.service.signal(_interface, signature="oa{sv}")
1330
def ClientAdded(self, objpath, properties):
1933
1331
"D-Bus signal"
1934
1332
pass
1935
1333
1936
@dbus.service.signal(_interface, signature="ss")
1937
def ClientNotFound(self, fingerprint, address):
1334
@dbus.service.signal(_interface, signature="s")
1335
def ClientNotFound(self, fingerprint):
1938
1336
"D-Bus signal"
1939
1337
pass
1940
1338
1946
1344
@dbus.service.method(_interface, out_signature="ao")
1947
1345
def GetAllClients(self):
1948
1346
"D-Bus method"
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
1347
return dbus.Array(c.dbus_object_path for c in clients)
1951
1348
1952
@dbus.service.method(_interface,
1953
out_signature="a{oa{sv}}")
1349
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1954
1350
def GetAllClientsWithProperties(self):
1955
1351
"D-Bus method"
1956
1352
return dbus.Dictionary(
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
1353
((c.dbus_object_path, c.GetAllProperties())
1354
for c in clients),
1959
1355
signature="oa{sv}")
1960
1356
1961
1357
@dbus.service.method(_interface, in_signature="o")
1962
1358
def RemoveClient(self, object_path):
1963
1359
"D-Bus method"
1964
for c in tcp_server.clients:
1360
for c in clients:
1965
1361
if c.dbus_object_path == object_path:
1966
tcp_server.clients.remove(c)
1362
clients.remove(c)
1967
1363
c.remove_from_connection()
1968
1364
# Don't signal anything except ClientRemoved
1969
c.disable(quiet=True)
1365
c.disable(signal=False)
1970
1366
# Emit D-Bus signal
1971
1367
self.ClientRemoved(object_path, c.name)
1972
1368
return
1973
raise KeyError(object_path)
1369
raise KeyError
1974
1370
1975
1371
del _interface
1976
1372
1977
1373
mandos_dbus_service = MandosDBusService()
1978
1374
1979
def cleanup():
1980
"Cleanup function; run on exit"
1981
service.cleanup()
1982
1983
while tcp_server.clients:
1984
client = tcp_server.clients.pop()
1985
if use_dbus:
1986
client.remove_from_connection()
1987
client.disable_hook = None
1988
# Don't signal anything except ClientRemoved
1989
client.disable(quiet=True)
1990
if use_dbus:
1991
# Emit D-Bus signal
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1993
client.name)
1994
1995
atexit.register(cleanup)
1996
1997
for client in tcp_server.clients:
1375
for client in clients:
1998
1376
if use_dbus:
1999
1377
# Emit D-Bus signal
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1378
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1379
client.GetAllProperties())
2001
1380
client.enable()
2002
1381
2003
1382
tcp_server.enable()
2006
1385
# Find out what port we got
2007
1386
service.port = tcp_server.socket.getsockname()[1]
2008
1387
if use_ipv6:
2009
logger.info("Now listening on address %r, port %d,"
1388
logger.info(u"Now listening on address %r, port %d,"
2010
1389
" flowinfo %d, scope_id %d"
2011
1390
% tcp_server.socket.getsockname())
2012
1391
else: # IPv4
2013
logger.info("Now listening on address %r, port %d"
1392
logger.info(u"Now listening on address %r, port %d"
2014
1393
% tcp_server.socket.getsockname())
2015
1394
2016
1395
#service.interface = tcp_server.socket.getsockname()[3]
2017
1396
2018
1397
try:
2019
1398
# From the Avahi example code
1399
server.connect_to_signal("StateChanged", server_state_changed)
2020
1400
try:
2021
service.activate()
1401
server_state_changed(server.GetState())
2022
1402
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
1403
logger.critical(u"DBusException: %s", error)
2025
1404
sys.exit(1)
2026
1405
# End of Avahi example code
2027
1406
2030
1409
(tcp_server.handle_request
2031
1410
(*args[2:], **kwargs) or True))
2032
1411
2033
logger.debug("Starting main loop")
1412
logger.debug(u"Starting main loop")
2034
1413
main_loop.run()
2035
1414
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
2037
cleanup()
1415
logger.critical(u"AvahiError: %s", error)
2038
1416
sys.exit(1)
2039
1417
except KeyboardInterrupt:
2040
1418
if debug:
2041
print("", file=sys.stderr)
1419
print >> sys.stderr
2042
1420
logger.debug("Server received KeyboardInterrupt")
2043
1421
logger.debug("Server exiting")
2044
# Must run before the D-Bus bus name gets deregistered
2045
cleanup()
2046
1422
2047
1423
if __name__ == '__main__':
2048
1424
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0