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- Committer: teddy at bsnet
- Date: 2010-10-05 17:15:09 UTC
- Revision ID: teddy@fukt.bsnet.se-20101005171509-xqxdzcgjjynchfyy
* debian/changelog: Include entry from 1.0.14-1.1 NMU.
- files added:
- 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" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
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".
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12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 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
33
33
34
34
from __future__ import division, with_statement, absolute_import
35
35
36
import SocketServer
36
import SocketServer as socketserver
37
37
import socket
38
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
47
import ConfigParser as configparser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
53
52
import subprocess
54
53
import atexit
55
54
import stat
56
55
import logging
57
56
import logging.handlers
58
57
import pwd
59
from contextlib import closing
58
import contextlib
59
import struct
60
import fcntl
61
import functools
62
import cPickle as pickle
63
import multiprocessing
60
64
61
65
import dbus
62
66
import dbus.service
65
69
from dbus.mainloop.glib import DBusGMainLoop
66
70
import ctypes
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71
import ctypes.util
68
69
version = "1.0.8"
70
71
logger = logging.Logger('mandos')
72
import xml.dom.minidom
73
import inspect
74
75
try:
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
except AttributeError:
78
try:
79
from IN import SO_BINDTODEVICE
80
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.1"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
72
88
syslogger = (logging.handlers.SysLogHandler
73
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
90
address = "/dev/log"))
75
91
syslogger.setFormatter(logging.Formatter
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
78
94
logger.addHandler(syslogger)
79
95
80
96
console = logging.StreamHandler()
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
83
100
logger.addHandler(console)
84
101
85
102
class AvahiError(Exception):
98
115
99
116
class AvahiService(object):
100
117
"""An Avahi (Zeroconf) service.
118
101
119
Attributes:
102
120
interface: integer; avahi.IF_UNSPEC or an interface index.
103
121
Used to optionally bind to the specified interface.
104
name: string; Example: 'Mandos'
105
type: string; Example: '_mandos._tcp'.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
106
124
See <http://www.dns-sd.org/ServiceTypes.html>
107
125
port: integer; what port to announce
108
126
TXT: list of strings; TXT record for the service
111
129
max_renames: integer; maximum number of renames
112
130
rename_count: integer; counter so we only rename after collisions
113
131
a sensible number of times
132
group: D-Bus Entry Group
133
server: D-Bus Server
134
bus: dbus.SystemBus()
114
135
"""
115
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
116
137
servicetype = None, port = None, TXT = None,
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
119
140
self.interface = interface
120
141
self.name = name
121
142
self.type = servicetype
126
147
self.rename_count = 0
127
148
self.max_renames = max_renames
128
149
self.protocol = protocol
150
self.group = None # our entry group
151
self.server = None
152
self.bus = bus
129
153
def rename(self):
130
154
"""Derived from the Avahi example code"""
131
155
if self.rename_count >= self.max_renames:
133
157
u" after %i retries, exiting.",
134
158
self.rename_count)
135
159
raise AvahiServiceError(u"Too many renames")
136
self.name = server.GetAlternativeServiceName(self.name)
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
137
161
logger.info(u"Changing Zeroconf service name to %r ...",
138
str(self.name))
162
self.name)
139
163
syslogger.setFormatter(logging.Formatter
140
('Mandos (%s) [%%(process)d]:'
141
' %%(levelname)s: %%(message)s'
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
142
166
% self.name))
143
167
self.remove()
144
self.add()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
145
174
self.rename_count += 1
146
175
def remove(self):
147
176
"""Derived from the Avahi example code"""
148
if group is not None:
149
group.Reset()
177
if self.group is not None:
178
self.group.Reset()
150
179
def add(self):
151
180
"""Derived from the Avahi example code"""
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)
181
if self.group is None:
182
self.group = dbus.Interface(
183
self.bus.get_object(avahi.DBUS_NAME,
184
self.server.EntryGroupNew()),
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
160
189
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)
190
self.name, self.type)
191
self.group.AddService(
192
self.interface,
193
self.protocol,
194
dbus.UInt32(0), # flags
195
self.name, self.type,
196
self.domain, self.host,
197
dbus.UInt16(self.port),
198
avahi.string_array_to_txt_array(self.TXT))
199
self.group.Commit()
200
def entry_group_state_changed(self, state, error):
201
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
206
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
208
self.rename()
209
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
214
def cleanup(self):
215
"""Derived from the Avahi example code"""
216
if self.group is not None:
217
self.group.Free()
218
self.group = None
219
def server_state_changed(self, state):
220
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
225
elif state == avahi.SERVER_RUNNING:
226
self.add()
227
def activate(self):
228
"""Derived from the Avahi example code"""
229
if self.server is None:
230
self.server = dbus.Interface(
231
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
233
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
236
self.server_state_changed(self.server.GetState())
180
237
181
238
182
239
class Client(object):
183
240
"""A representation of a client host served by this server.
241
184
242
Attributes:
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)
243
_approved: bool(); 'None' if not yet approved/disapproved
244
approval_delay: datetime.timedelta(); Time to wait for approval
245
approval_duration: datetime.timedelta(); Duration of one approval
199
246
checker: subprocess.Popen(); a running checker process used
200
247
to see if the client lives.
201
248
'None' if no process is running.
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
249
checker_callback_tag: a gobject event source tag, or None
250
checker_command: string; External command which is run to check
251
if client lives. %() expansions are done at
207
252
runtime with vars(self) as dict, so that for
208
253
instance %(name)s can be used in the command.
254
checker_initiator_tag: a gobject event source tag, or None
255
created: datetime.datetime(); (UTC) object creation
209
256
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
259
enabled: bool()
260
fingerprint: string (40 or 32 hexadecimal digits); used to
261
uniquely identify the client
262
host: string; available for use by the checker command
263
interval: datetime.timedelta(); How often to start a new checker
264
last_approval_request: datetime.datetime(); (UTC) or None
265
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
267
name: string; from the config file, used in log messages and
268
D-Bus identifiers
269
secret: bytestring; sent verbatim (over TLS) to client
270
timeout: datetime.timedelta(); How long from last_checked_ok
271
until this client is disabled
272
runtime_expansions: Allowed attributes for runtime expansion.
210
273
"""
274
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
211
287
def timeout_milliseconds(self):
212
288
"Return the 'timeout' attribute in milliseconds"
213
return ((self.timeout.days * 24 * 60 * 60 * 1000)
214
+ (self.timeout.seconds * 1000)
215
+ (self.timeout.microseconds // 1000))
289
return self._timedelta_to_milliseconds(self.timeout)
216
290
217
291
def interval_milliseconds(self):
218
292
"Return the 'interval' attribute in milliseconds"
219
return ((self.interval.days * 24 * 60 * 60 * 1000)
220
+ (self.interval.seconds * 1000)
221
+ (self.interval.microseconds // 1000))
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
222
297
223
298
def __init__(self, name = None, disable_hook=None, config=None):
224
299
"""Note: the 'checker' key in 'config' sets the
231
306
# Uppercase and remove spaces from fingerprint for later
232
307
# comparison purposes with return value from the fingerprint()
233
308
# function
234
self.fingerprint = (config["fingerprint"].upper()
309
self.fingerprint = (config[u"fingerprint"].upper()
235
310
.replace(u" ", u""))
236
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
240
with closing(open(os.path.expanduser
241
(os.path.expandvars
242
(config["secfile"])))) as secfile:
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
243
318
self.secret = secfile.read()
244
319
else:
245
320
raise TypeError(u"No secret or secfile for client %s"
246
321
% self.name)
247
self.host = config.get("host", "")
322
self.host = config.get(u"host", u"")
248
323
self.created = datetime.datetime.utcnow()
249
324
self.enabled = False
325
self.last_approval_request = None
250
326
self.last_enabled = None
251
327
self.last_checked_ok = None
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
254
330
self.disable_hook = disable_hook
255
331
self.checker = None
256
332
self.checker_initiator_tag = None
257
333
self.disable_initiator_tag = None
258
334
self.checker_callback_tag = None
259
self.checker_command = config["checker"]
335
self.checker_command = config[u"checker"]
260
336
self.current_checker_command = None
261
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
341
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
262
347
348
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
263
353
def enable(self):
264
354
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
356
# Already enabled
357
return
358
self.send_changedstate()
265
359
self.last_enabled = datetime.datetime.utcnow()
266
360
# Schedule a new checker to be started an 'interval' from now,
267
361
# and every interval from then on.
268
362
self.checker_initiator_tag = (gobject.timeout_add
269
363
(self.interval_milliseconds(),
270
364
self.start_checker))
271
# Also start a new checker *right now*.
272
self.start_checker()
273
365
# Schedule a disable() when 'timeout' has passed
274
366
self.disable_initiator_tag = (gobject.timeout_add
275
367
(self.timeout_milliseconds(),
276
368
self.disable))
277
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
278
372
279
def disable(self):
373
def disable(self, quiet=True):
280
374
"""Disable this client."""
281
375
if not getattr(self, "enabled", False):
282
376
return False
283
logger.info(u"Disabling client %s", self.name)
284
if getattr(self, "disable_initiator_tag", False):
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
285
382
gobject.source_remove(self.disable_initiator_tag)
286
383
self.disable_initiator_tag = None
287
if getattr(self, "checker_initiator_tag", False):
384
if getattr(self, u"checker_initiator_tag", False):
288
385
gobject.source_remove(self.checker_initiator_tag)
289
386
self.checker_initiator_tag = None
290
387
self.stop_checker()
317
414
318
415
def checked_ok(self):
319
416
"""Bump up the timeout for this client.
417
320
418
This should only be called when the client has been seen,
321
419
alive and well.
322
420
"""
326
424
(self.timeout_milliseconds(),
327
425
self.disable))
328
426
427
def need_approval(self):
428
self.last_approval_request = datetime.datetime.utcnow()
429
329
430
def start_checker(self):
330
431
"""Start a new checker subprocess if one is not running.
432
331
433
If a checker already exists, leave it running and do
332
434
nothing."""
333
435
# The reason for not killing a running checker is that if we
336
438
# client would inevitably timeout, since no checker would get
337
439
# a chance to run to completion. If we instead leave running
338
440
# checkers alone, the checker would have to take more time
339
# than 'timeout' for the client to be declared invalid, which
340
# is as it should be.
441
# than 'timeout' for the client to be disabled, which is as it
442
# should be.
341
443
342
444
# If a checker exists, make sure it is not a zombie
343
if self.checker is not None:
445
try:
344
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
345
452
if pid:
346
logger.warning("Checker was a zombie")
453
logger.warning(u"Checker was a zombie")
347
454
gobject.source_remove(self.checker_callback_tag)
348
455
self.checker_callback(pid, status,
349
456
self.current_checker_command)
354
461
command = self.checker_command % self.host
355
462
except TypeError:
356
463
# Escape attributes for the shell
357
escaped_attrs = dict((key, re.escape(str(val)))
358
for key, val in
359
vars(self).iteritems())
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
360
472
try:
361
473
command = self.checker_command % escaped_attrs
362
474
except TypeError, error:
373
485
# always replaced by /dev/null.)
374
486
self.checker = subprocess.Popen(command,
375
487
close_fds=True,
376
shell=True, cwd="/")
488
shell=True, cwd=u"/")
377
489
self.checker_callback_tag = (gobject.child_watch_add
378
490
(self.checker.pid,
379
491
self.checker_callback,
395
507
if self.checker_callback_tag:
396
508
gobject.source_remove(self.checker_callback_tag)
397
509
self.checker_callback_tag = None
398
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
399
511
return
400
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
401
513
try:
402
514
os.kill(self.checker.pid, signal.SIGTERM)
403
#os.sleep(0.5)
515
#time.sleep(0.5)
404
516
#if self.checker.poll() is None:
405
517
# os.kill(self.checker.pid, signal.SIGKILL)
406
518
except OSError, error:
407
519
if error.errno != errno.ESRCH: # No such process
408
520
raise
409
521
self.checker = None
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):
522
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
525
"""Decorators for marking methods of a DBusObjectWithProperties to
526
become properties on the D-Bus.
527
528
The decorated method will be called with no arguments by "Get"
529
and with one argument by "Set".
530
531
The parameters, where they are supported, are the same as
532
dbus.service.method, except there is only "signature", since the
533
type from Get() and the type sent to Set() is the same.
534
"""
535
# Encoding deeply encoded byte arrays is not supported yet by the
536
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
540
def decorator(func):
541
func._dbus_is_property = True
542
func._dbus_interface = dbus_interface
543
func._dbus_signature = signature
544
func._dbus_access = access
545
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
547
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
550
return decorator
551
552
553
class DBusPropertyException(dbus.exceptions.DBusException):
554
"""A base class for D-Bus property-related exceptions
555
"""
556
def __unicode__(self):
557
return unicode(str(self))
558
559
560
class DBusPropertyAccessException(DBusPropertyException):
561
"""A property's access permissions disallows an operation.
562
"""
563
pass
564
565
566
class DBusPropertyNotFound(DBusPropertyException):
567
"""An attempt was made to access a non-existing property.
568
"""
569
pass
570
571
572
class DBusObjectWithProperties(dbus.service.Object):
573
"""A D-Bus object with properties.
574
575
Classes inheriting from this can use the dbus_service_property
576
decorator to expose methods as D-Bus properties. It exposes the
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
"""
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
591
def _get_dbus_property(self, interface_name, property_name):
592
"""Returns a bound method if one exists which is a D-Bus
593
property with the specified name and interface.
594
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
605
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
612
def Get(self, interface_name, property_name):
613
"""Standard D-Bus property Get() method, see D-Bus standard.
614
"""
615
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
617
raise DBusPropertyAccessException(property_name)
618
value = prop()
619
if not hasattr(value, u"variant_level"):
620
return value
621
return type(value)(value, variant_level=value.variant_level+1)
622
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
624
def Set(self, interface_name, property_name, value):
625
"""Standard D-Bus property Set() method, see D-Bus standard.
626
"""
627
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
629
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
631
# The byte_arrays option is not supported yet on
632
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
637
prop(value)
638
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
641
def GetAll(self, interface_name):
642
"""Standard D-Bus property GetAll() method, see D-Bus
643
standard.
644
645
Note: Will not include properties with access="write".
646
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
649
if (interface_name
650
and interface_name != prop._dbus_interface):
651
# Interface non-empty but did not match
652
continue
653
# Ignore write-only properties
654
if prop._dbus_access == u"write":
655
continue
656
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
659
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
663
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
666
path_keyword='object_path',
667
connection_keyword='connection')
668
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
670
"""
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
673
try:
674
document = xml.dom.minidom.parseString(xmlstring)
675
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
680
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
682
for tag in (make_tag(document, name, prop)
683
for name, prop
684
in self._get_all_dbus_properties()
685
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
687
if_tag.appendChild(tag)
688
# Add the names to the return values for the
689
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
712
class ClientDBus(Client, DBusObjectWithProperties):
423
713
"""A Client class using D-Bus
714
424
715
Attributes:
425
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
716
dbus_object_path: dbus.ObjectPath
717
bus: dbus.SystemBus()
426
718
"""
719
720
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
722
427
723
# dbus.service.Object doesn't use super(), so we can't either.
428
724
429
def __init__(self, *args, **kwargs):
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
self.bus = bus
430
728
Client.__init__(self, *args, **kwargs)
431
729
# Only now, when this client is initialized, can it show up on
432
730
# the D-Bus
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
433
734
self.dbus_object_path = (dbus.ObjectPath
434
("/clients/"
435
+ self.name.replace(".", "_")))
436
dbus.service.Object.__init__(self, bus,
437
self.dbus_object_path)
735
(u"/clients/" + client_object_name))
736
DBusObjectWithProperties.__init__(self, self.bus,
737
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
438
761
def enable(self):
439
oldstate = getattr(self, "enabled", False)
762
oldstate = getattr(self, u"enabled", False)
440
763
r = Client.enable(self)
441
764
if oldstate != self.enabled:
442
765
# Emit D-Bus signals
443
self.PropertyChanged(dbus.String(u"enabled"),
766
self.PropertyChanged(dbus.String(u"Enabled"),
444
767
dbus.Boolean(True, variant_level=1))
445
self.PropertyChanged(dbus.String(u"last_enabled"),
446
(_datetime_to_dbus(self.last_enabled,
447
variant_level=1)))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
448
772
return r
449
773
450
def disable(self, signal = True):
451
oldstate = getattr(self, "enabled", False)
452
r = Client.disable(self)
453
if signal and oldstate != self.enabled:
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
454
778
# Emit D-Bus signal
455
self.PropertyChanged(dbus.String(u"enabled"),
779
self.PropertyChanged(dbus.String(u"Enabled"),
456
780
dbus.Boolean(False, variant_level=1))
457
781
return r
458
782
461
785
self.remove_from_connection()
462
786
except LookupError:
463
787
pass
464
if hasattr(dbus.service.Object, "__del__"):
465
dbus.service.Object.__del__(self, *args, **kwargs)
788
if hasattr(DBusObjectWithProperties, u"__del__"):
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
466
790
Client.__del__(self, *args, **kwargs)
467
791
468
792
def checker_callback(self, pid, condition, command,
470
794
self.checker_callback_tag = None
471
795
self.checker = None
472
796
# Emit D-Bus signal
473
self.PropertyChanged(dbus.String(u"checker_running"),
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
474
798
dbus.Boolean(False, variant_level=1))
475
799
if os.WIFEXITED(condition):
476
800
exitstatus = os.WEXITSTATUS(condition)
491
815
r = Client.checked_ok(self, *args, **kwargs)
492
816
# Emit D-Bus signal
493
817
self.PropertyChanged(
494
dbus.String(u"last_checked_ok"),
495
(_datetime_to_dbus(self.last_checked_ok,
496
variant_level=1)))
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
497
830
return r
498
831
499
832
def start_checker(self, *args, **kwargs):
509
842
# Emit D-Bus signal
510
843
self.CheckerStarted(self.current_checker_command)
511
844
self.PropertyChanged(
512
dbus.String("checker_running"),
845
dbus.String(u"CheckerRunning"),
513
846
dbus.Boolean(True, variant_level=1))
514
847
return r
515
848
516
849
def stop_checker(self, *args, **kwargs):
517
old_checker = getattr(self, "checker", None)
850
old_checker = getattr(self, u"checker", None)
518
851
r = Client.stop_checker(self, *args, **kwargs)
519
852
if (old_checker is not None
520
and getattr(self, "checker", None) is None):
521
self.PropertyChanged(dbus.String(u"checker_running"),
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
522
855
dbus.Boolean(False, variant_level=1))
523
856
return r
524
525
## D-Bus methods & signals
857
858
def _reset_approved(self):
859
self._approved = None
860
return False
861
862
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
870
## D-Bus methods, signals & properties
526
871
_interface = u"se.bsnet.fukt.Mandos.Client"
527
872
528
# CheckedOK - method
529
CheckedOK = dbus.service.method(_interface)(checked_ok)
530
CheckedOK.__name__ = "CheckedOK"
873
## Signals
531
874
532
875
# CheckerCompleted - signal
533
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
534
877
def CheckerCompleted(self, exitcode, waitstatus, command):
535
878
"D-Bus signal"
536
879
pass
537
880
538
881
# CheckerStarted - signal
539
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
540
883
def CheckerStarted(self, command):
541
884
"D-Bus signal"
542
885
pass
543
886
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
591
887
# PropertyChanged - signal
592
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
593
889
def PropertyChanged(self, property, value):
594
890
"D-Bus signal"
595
891
pass
596
892
597
# ReceivedSecret - signal
893
# GotSecret - signal
598
894
@dbus.service.signal(_interface)
599
def ReceivedSecret(self):
600
"D-Bus signal"
895
def GotSecret(self):
896
"""D-Bus signal
897
Is sent after a successful transfer of secret from the Mandos
898
server to mandos-client
899
"""
601
900
pass
602
901
603
902
# Rejected - signal
604
@dbus.service.signal(_interface)
605
def Rejected(self):
903
@dbus.service.signal(_interface, signature=u"s")
904
def Rejected(self, reason):
606
905
"D-Bus signal"
607
906
pass
608
907
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)))
908
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
910
def NeedApproval(self, timeout, default):
911
"D-Bus signal"
912
return self.need_approval()
913
914
## Methods
915
916
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
918
def Approve(self, value):
919
self.approve(value)
920
921
# CheckedOK - method
922
@dbus.service.method(_interface)
923
def CheckedOK(self):
924
return self.checked_ok()
652
925
653
926
# Enable - method
654
Enable = dbus.service.method(_interface)(enable)
655
Enable.__name__ = "Enable"
927
@dbus.service.method(_interface)
928
def Enable(self):
929
"D-Bus method"
930
self.enable()
656
931
657
932
# StartChecker - method
658
933
@dbus.service.method(_interface)
667
942
self.disable()
668
943
669
944
# StopChecker - method
670
StopChecker = dbus.service.method(_interface)(stop_checker)
671
StopChecker.__name__ = "StopChecker"
945
@dbus.service.method(_interface)
946
def StopChecker(self):
947
self.stop_checker()
948
949
## Properties
950
951
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
953
def ApprovalPending_dbus_property(self):
954
return dbus.Boolean(bool(self.approvals_pending))
955
956
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
959
def ApprovedByDefault_dbus_property(self, value=None):
960
if value is None: # get
961
return dbus.Boolean(self.approved_by_default)
962
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
967
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
970
def ApprovalDelay_dbus_property(self, value=None):
971
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
978
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
981
def ApprovalDuration_dbus_property(self, value=None):
982
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
990
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
992
def Name_dbus_property(self):
993
return dbus.String(self.name)
994
995
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
997
def Fingerprint_dbus_property(self):
998
return dbus.String(self.fingerprint)
999
1000
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1003
def Host_dbus_property(self, value=None):
1004
if value is None: # get
1005
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1010
1011
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1013
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1015
1016
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1018
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
1023
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1026
def Enabled_dbus_property(self, value=None):
1027
if value is None: # get
1028
return dbus.Boolean(self.enabled)
1029
if value:
1030
self.enable()
1031
else:
1032
self.disable()
1033
1034
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1037
def LastCheckedOK_dbus_property(self, value=None):
1038
if value is not None:
1039
self.checked_ok()
1040
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1045
1046
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1048
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1054
1055
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1058
def Timeout_dbus_property(self, value=None):
1059
if value is None: # get
1060
return dbus.UInt64(self.timeout_milliseconds())
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1082
1083
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1086
def Interval_dbus_property(self, value=None):
1087
if value is None: # get
1088
return dbus.UInt64(self.interval_milliseconds())
1089
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1094
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1101
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1104
def Checker_dbus_property(self, value=None):
1105
if value is None: # get
1106
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1112
1113
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1116
def CheckerRunning_dbus_property(self, value=None):
1117
if value is None: # get
1118
return dbus.Boolean(self.checker is not None)
1119
if value:
1120
self.start_checker()
1121
else:
1122
self.stop_checker()
1123
1124
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1126
def ObjectPath_dbus_property(self):
1127
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1129
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1132
def Secret_dbus_property(self, value):
1133
self.secret = str(value)
672
1134
673
1135
del _interface
674
1136
675
1137
676
class TCP_handler(SocketServer.BaseRequestHandler, object):
677
"""A TCP request handler class.
678
Instantiated by IPv6_TCPServer for each request to handle it.
1138
class ProxyClient(object):
1139
def __init__(self, child_pipe, fpr, address):
1140
self._pipe = child_pipe
1141
self._pipe.send(('init', fpr, address))
1142
if not self._pipe.recv():
1143
raise KeyError()
1144
1145
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1147
return super(ProxyClient, self).__getattribute__(name)
1148
self._pipe.send(('getattr', name))
1149
data = self._pipe.recv()
1150
if data[0] == 'data':
1151
return data[1]
1152
if data[0] == 'function':
1153
def func(*args, **kwargs):
1154
self._pipe.send(('funcall', name, args, kwargs))
1155
return self._pipe.recv()[1]
1156
return func
1157
1158
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1160
return super(ProxyClient, self).__setattr__(name, value)
1161
self._pipe.send(('setattr', name, value))
1162
1163
1164
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
"""A class to handle client connections.
1166
1167
Instantiated once for each connection to handle it.
679
1168
Note: This will run in its own forked process."""
680
1169
681
1170
def handle(self):
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:
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1175
self.server.child_pipe.fileno())
1176
687
1177
session = (gnutls.connection
688
1178
.ClientSession(self.request,
689
1179
gnutls.connection
690
1180
.X509Credentials()))
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
1181
701
1182
# Note: gnutls.connection.X509Credentials is really a
702
1183
# generic GnuTLS certificate credentials object so long as
703
1184
# no X.509 keys are added to it. Therefore, we can use it
704
1185
# here despite using OpenPGP certificates.
705
706
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
707
# "+AES-256-CBC", "+SHA1",
708
# "+COMP-NULL", "+CTYPE-OPENPGP",
709
# "+DHE-DSS"))
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
710
1191
# Use a fallback default, since this MUST be set.
711
priority = self.server.settings.get("priority", "NORMAL")
1192
priority = self.server.gnutls_priority
1193
if priority is None:
1194
priority = u"NORMAL"
712
1195
(gnutls.library.functions
713
1196
.gnutls_priority_set_direct(session._c_object,
714
1197
priority, None))
715
1198
1199
# Start communication using the Mandos protocol
1200
# Get protocol number
1201
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1203
try:
1204
if int(line.strip().split()[0]) > 1:
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1208
return
1209
1210
# Start GnuTLS connection
716
1211
try:
717
1212
session.handshake()
718
1213
except gnutls.errors.GNUTLSError, error:
721
1216
# established. Just abandon the request.
722
1217
return
723
1218
logger.debug(u"Handshake succeeded")
1219
1220
approval_required = False
724
1221
try:
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)
1222
try:
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1227
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1230
try:
1231
client = ProxyClient(child_pipe, fpr,
1232
self.client_address)
1233
except KeyError:
1234
return
1235
1236
if client.approval_delay:
1237
delay = client.approval_delay
1238
client.approvals_pending += 1
1239
approval_required = True
1240
1241
while True:
1242
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
1245
if self.server.use_dbus:
1246
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1248
return
1249
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
1252
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1255
client.name)
1256
if self.server.use_dbus:
1257
# Emit D-Bus signal
1258
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
1261
else:
1262
logger.warning(u"Client %s was not approved",
1263
client.name)
1264
if self.server.use_dbus:
1265
# Emit D-Bus signal
1266
client.Rejected("Denied")
1267
return
1268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
time = datetime.datetime.now()
1272
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1274
client.changedstate.release()
1275
time2 = datetime.datetime.now()
1276
if (time2 - time) >= delay:
1277
if not client.approved_by_default:
1278
logger.warning("Client %s timed out while"
1279
" waiting for approval",
1280
client.name)
1281
if self.server.use_dbus:
1282
# Emit D-Bus signal
1283
client.Rejected("Approval timed out")
1284
return
1285
else:
1286
break
1287
else:
1288
delay -= time2 - time
1289
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1305
if self.server.use_dbus:
1306
# Emit D-Bus signal
1307
client.GotSecret()
731
1308
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()
1309
finally:
1310
if approval_required:
1311
client.approvals_pending -= 1
1312
try:
1313
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
756
1316
757
1317
@staticmethod
758
1318
def peer_certificate(session):
768
1328
.gnutls_certificate_get_peers
769
1329
(session._c_object, ctypes.byref(list_size)))
770
1330
if not bool(cert_list) and list_size.value != 0:
771
raise gnutls.errors.GNUTLSError("error getting peer"
772
" certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
773
1333
if list_size.value == 0:
774
1334
return None
775
1335
cert = cert_list[0]
801
1361
if crtverify.value != 0:
802
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
803
1363
raise (gnutls.errors.CertificateSecurityError
804
("Verify failed"))
1364
(u"Verify failed"))
805
1365
# New buffer for the fingerprint
806
1366
buf = ctypes.create_string_buffer(20)
807
1367
buf_len = ctypes.c_size_t()
818
1378
return hex_fpr
819
1379
820
1380
821
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
822
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
823
Assumes a gobject.MainLoop event loop.
824
"""
1381
class MultiprocessingMixIn(object):
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1383
def sub_process_main(self, request, address):
1384
try:
1385
self.finish_request(request, address)
1386
except:
1387
self.handle_error(request, address)
1388
self.close_request(request)
1389
1390
def process_request(self, request, address):
1391
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1394
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
""" adds a pipe to the MixIn """
825
1397
def process_request(self, request, client_address):
826
"""This overrides and wraps the original process_request().
827
This function creates a new pipe in self.pipe
1398
"""Overrides and wraps the original process_request().
1399
1400
This function creates a new pipe in self.pipe
828
1401
"""
829
self.pipe = os.pipe()
830
super(ForkingMixInWithPipe,
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
831
1405
self).process_request(request, client_address)
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):
1406
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
838
1410
"""Dummy function; override as necessary"""
839
os.close(source)
840
return False
841
842
843
class IPv6_TCPServer(ForkingMixInWithPipe,
844
SocketServer.TCPServer, object):
1411
pass
1412
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
socketserver.TCPServer, object):
845
1415
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1416
846
1417
Attributes:
847
settings: Server settings
848
clients: Set() of Client objects
849
1418
enabled: Boolean; whether this server is activated yet
1419
interface: None or a network interface name (string)
1420
use_ipv6: Boolean; to use IPv6 or not
850
1421
"""
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)
1422
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1424
self.interface = interface
1425
if use_ipv6:
1426
self.address_family = socket.AF_INET6
1427
socketserver.TCPServer.__init__(self, server_address,
1428
RequestHandlerClass)
865
1429
def server_bind(self):
866
1430
"""This overrides the normal server_bind() function
867
1431
to bind to an interface if one was specified, and also NOT to
868
1432
bind to an address or port if they were not specified."""
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
1433
if self.interface is not None:
1434
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1437
self.interface)
1438
else:
1439
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1453
else:
1454
raise
883
1455
# Only bind(2) the socket if we really need to.
884
1456
if self.server_address[0] or self.server_address[1]:
885
1457
if not self.server_address[0]:
886
1458
if self.address_family == socket.AF_INET6:
887
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
888
1460
else:
889
1461
any_address = socket.INADDR_ANY
890
1462
self.server_address = (any_address,
892
1464
elif not self.server_address[1]:
893
1465
self.server_address = (self.server_address[0],
894
1466
0)
895
# if self.settings["interface"]:
1467
# if self.interface:
896
1468
# self.server_address = (self.server_address[0],
897
1469
# 0, # port
898
1470
# 0, # flowinfo
899
1471
# if_nametoindex
900
# (self.settings
901
# ["interface"]))
902
return super(IPv6_TCPServer, self).server_bind()
1472
# (self.interface))
1473
return socketserver.TCPServer.server_bind(self)
1474
1475
1476
class MandosServer(IPv6_TCPServer):
1477
"""Mandos server.
1478
1479
Attributes:
1480
clients: set of Client objects
1481
gnutls_priority GnuTLS priority string
1482
use_dbus: Boolean; to emit D-Bus signals or not
1483
1484
Assumes a gobject.MainLoop event loop.
1485
"""
1486
def __init__(self, server_address, RequestHandlerClass,
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
1489
self.enabled = False
1490
self.clients = clients
1491
if self.clients is None:
1492
self.clients = set()
1493
self.use_dbus = use_dbus
1494
self.gnutls_priority = gnutls_priority
1495
IPv6_TCPServer.__init__(self, server_address,
1496
RequestHandlerClass,
1497
interface = interface,
1498
use_ipv6 = use_ipv6)
903
1499
def server_activate(self):
904
1500
if self.enabled:
905
return super(IPv6_TCPServer, self).server_activate()
1501
return socketserver.TCPServer.server_activate(self)
906
1502
def enable(self):
907
1503
self.enabled = True
908
def handle_ipc(self, source, condition, file_objects={}):
1504
def add_pipe(self, parent_pipe):
1505
# Call "handle_ipc" for both data and EOF events
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
909
1513
condition_names = {
910
gobject.IO_IN: "IN", # There is data to read.
911
gobject.IO_OUT: "OUT", # Data can be written (without
912
# blocking).
913
gobject.IO_PRI: "PRI", # There is urgent data to read.
914
gobject.IO_ERR: "ERR", # Error condition.
915
gobject.IO_HUP: "HUP" # Hung up (the connection has been
916
# broken, usually for pipes and
917
# sockets).
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
918
1522
}
919
1523
conditions_string = ' | '.join(name
920
1524
for cond, name in
921
1525
condition_names.iteritems()
922
1526
if cond & condition)
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
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1529
return False
1530
1531
# Read a request from the child
1532
request = parent_pipe.recv()
1533
command = request[0]
1534
1535
if command == 'init':
1536
fpr = request[1]
1537
address = request[2]
1538
1539
for c in self.clients:
1540
if c.fingerprint == fpr:
1541
client = c
1542
break
1543
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
1546
if self.use_dbus:
1547
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
1549
parent_pipe.send(False)
1550
return False
1551
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1557
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
1559
return False
1560
if command == 'funcall':
1561
funcname = request[1]
1562
args = request[2]
1563
kwargs = request[3]
1564
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
1567
if command == 'getattr':
1568
attrname = request[1]
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
1571
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1573
1574
if command == 'setattr':
1575
attrname = request[1]
1576
value = request[2]
1577
setattr(client_object, attrname, value)
1578
977
1579
return True
978
1580
979
1581
980
1582
def string_to_delta(interval):
981
1583
"""Parse a string and return a datetime.timedelta
982
1584
983
>>> string_to_delta('7d')
1585
>>> string_to_delta(u'7d')
984
1586
datetime.timedelta(7)
985
>>> string_to_delta('60s')
1587
>>> string_to_delta(u'60s')
986
1588
datetime.timedelta(0, 60)
987
>>> string_to_delta('60m')
1589
>>> string_to_delta(u'60m')
988
1590
datetime.timedelta(0, 3600)
989
>>> string_to_delta('24h')
1591
>>> string_to_delta(u'24h')
990
1592
datetime.timedelta(1)
991
1593
>>> string_to_delta(u'1w')
992
1594
datetime.timedelta(7)
993
>>> string_to_delta('5m 30s')
1595
>>> string_to_delta(u'5m 30s')
994
1596
datetime.timedelta(0, 330)
995
1597
"""
996
1598
timevalue = datetime.timedelta(0)
1009
1611
elif suffix == u"w":
1010
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1011
1613
else:
1012
raise ValueError
1013
except (ValueError, IndexError):
1014
raise ValueError
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
1015
1617
timevalue += delta
1016
1618
return timevalue
1017
1619
1018
1620
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
1042
1621
def if_nametoindex(interface):
1043
"""Call the C function if_nametoindex(), or equivalent"""
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1044
1625
global if_nametoindex
1045
1626
try:
1046
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1047
(ctypes.util.find_library("c"))
1628
(ctypes.util.find_library(u"c"))
1048
1629
.if_nametoindex)
1049
1630
except (OSError, AttributeError):
1050
if "struct" not in sys.modules:
1051
import struct
1052
if "fcntl" not in sys.modules:
1053
import fcntl
1631
logger.warning(u"Doing if_nametoindex the hard way")
1054
1632
def if_nametoindex(interface):
1055
1633
"Get an interface index the hard way, i.e. using fcntl()"
1056
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1057
with closing(socket.socket()) as s:
1635
with contextlib.closing(socket.socket()) as s:
1058
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1059
struct.pack("16s16x", interface))
1060
interface_index = struct.unpack("I", ifreq[16:20])[0]
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1061
1641
return interface_index
1062
1642
return if_nametoindex(interface)
1063
1643
1064
1644
1065
1645
def daemon(nochdir = False, noclose = False):
1066
1646
"""See daemon(3). Standard BSD Unix function.
1647
1067
1648
This should really exist as os.daemon, but it doesn't (yet)."""
1068
1649
if os.fork():
1069
1650
sys.exit()
1070
1651
os.setsid()
1071
1652
if not nochdir:
1072
os.chdir("/")
1653
os.chdir(u"/")
1073
1654
if os.fork():
1074
1655
sys.exit()
1075
1656
if not noclose:
1077
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1078
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
1079
1660
raise OSError(errno.ENODEV,
1080
"/dev/null not a character device")
1661
u"%s not a character device"
1662
% os.path.devnull)
1081
1663
os.dup2(null, sys.stdin.fileno())
1082
1664
os.dup2(null, sys.stdout.fileno())
1083
1665
os.dup2(null, sys.stderr.fileno())
1087
1669
1088
1670
def main():
1089
1671
1090
######################################################################
1672
##################################################################
1091
1673
# Parsing of options, both command line and config file
1092
1674
1093
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1094
parser.add_option("-i", "--interface", type="string",
1095
metavar="IF", help="Bind to interface IF")
1096
parser.add_option("-a", "--address", type="string",
1097
help="Address to listen for requests on")
1098
parser.add_option("-p", "--port", type="int",
1099
help="Port number to receive requests on")
1100
parser.add_option("--check", action="store_true",
1101
help="Run self-test")
1102
parser.add_option("--debug", action="store_true",
1103
help="Debug mode; run in foreground and log to"
1104
" terminal")
1105
parser.add_option("--priority", type="string", help="GnuTLS"
1106
" priority string (see GnuTLS documentation)")
1107
parser.add_option("--servicename", type="string", metavar="NAME",
1108
help="Zeroconf service name")
1109
parser.add_option("--configdir", type="string",
1110
default="/etc/mandos", metavar="DIR",
1111
help="Directory to search for configuration"
1112
" files")
1113
parser.add_option("--no-dbus", action="store_false",
1114
dest="use_dbus",
1115
help="Do not provide D-Bus system bus"
1116
" interface")
1117
parser.add_option("--no-ipv6", action="store_false",
1118
dest="use_ipv6", help="Do not use IPv6")
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1119
1702
options = parser.parse_args()[0]
1120
1703
1121
1704
if options.check:
1124
1707
sys.exit()
1125
1708
1126
1709
# Default values for config file for server-global settings
1127
server_defaults = { "interface": "",
1128
"address": "",
1129
"port": "",
1130
"debug": "False",
1131
"priority":
1132
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1133
"servicename": "Mandos",
1134
"use_dbus": "True",
1135
"use_ipv6": "True",
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1136
1720
}
1137
1721
1138
1722
# Parse config file for server-global settings
1139
server_config = ConfigParser.SafeConfigParser(server_defaults)
1723
server_config = configparser.SafeConfigParser(server_defaults)
1140
1724
del server_defaults
1141
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
1142
1727
# Convert the SafeConfigParser object to a dict
1143
1728
server_settings = server_config.defaults()
1144
1729
# Use the appropriate methods on the non-string config options
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")
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
1732
option)
1151
1733
if server_settings["port"]:
1152
server_settings["port"] = server_config.getint("DEFAULT",
1153
"port")
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
1154
1736
del server_config
1155
1737
1156
1738
# Override the settings from the config file with command line
1157
1739
# options, if set.
1158
for option in ("interface", "address", "port", "debug",
1159
"priority", "servicename", "configdir",
1160
"use_dbus", "use_ipv6"):
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
1161
1743
value = getattr(options, option)
1162
1744
if value is not None:
1163
1745
server_settings[option] = value
1164
1746
del options
1747
# Force all strings to be unicode
1748
for option in server_settings.keys():
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
1165
1751
# Now we have our good server settings in "server_settings"
1166
1752
1167
1753
##################################################################
1168
1754
1169
1755
# For convenience
1170
debug = server_settings["debug"]
1171
use_dbus = server_settings["use_dbus"]
1172
use_ipv6 = server_settings["use_ipv6"]
1173
1174
if not debug:
1175
syslogger.setLevel(logging.WARNING)
1176
console.setLevel(logging.WARNING)
1177
1178
if server_settings["servicename"] != "Mandos":
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1179
1762
syslogger.setFormatter(logging.Formatter
1180
('Mandos (%s) [%%(process)d]:'
1181
' %%(levelname)s: %%(message)s'
1182
% server_settings["servicename"]))
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
1183
1766
1184
1767
# Parse config file with clients
1185
client_defaults = { "timeout": "1h",
1186
"interval": "5m",
1187
"checker": "fping -q -- %%(host)s",
1188
"host": "",
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1189
1774
}
1190
client_config = ConfigParser.SafeConfigParser(client_defaults)
1191
client_config.read(os.path.join(server_settings["configdir"],
1192
"clients.conf"))
1193
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
1778
1194
1779
global mandos_dbus_service
1195
1780
mandos_dbus_service = None
1196
1781
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)
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
1793
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
1208
1797
1209
1798
try:
1210
uid = pwd.getpwnam("_mandos").pw_uid
1211
gid = pwd.getpwnam("_mandos").pw_gid
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1212
1801
except KeyError:
1213
1802
try:
1214
uid = pwd.getpwnam("mandos").pw_uid
1215
gid = pwd.getpwnam("mandos").pw_gid
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
1216
1805
except KeyError:
1217
1806
try:
1218
uid = pwd.getpwnam("nobody").pw_uid
1219
gid = pwd.getpwnam("nogroup").pw_gid
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1220
1809
except KeyError:
1221
1810
uid = 65534
1222
1811
gid = 65534
1227
1816
if error[0] != errno.EPERM:
1228
1817
raise error
1229
1818
1230
# Enable all possible GnuTLS debugging
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1231
1827
if debug:
1828
# Enable all possible GnuTLS debugging
1829
1232
1830
# "Use a log level over 10 to enable all debugging options."
1233
1831
# - GnuTLS manual
1234
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
1235
1833
1236
1834
@gnutls.library.types.gnutls_log_func
1237
1835
def debug_gnutls(level, string):
1238
logger.debug("GnuTLS: %s", string[:-1])
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1239
1837
1240
1838
(gnutls.library.functions
1241
1839
.gnutls_global_set_log_function(debug_gnutls))
1840
1841
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1843
os.dup2(null, sys.stdin.fileno())
1844
if null > 2:
1845
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1242
1849
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"]))
1251
1850
1252
1851
global main_loop
1253
global bus
1254
global server
1255
1852
# From the Avahi example code
1256
1853
DBusGMainLoop(set_as_default=True )
1257
1854
main_loop = gobject.MainLoop()
1258
1855
bus = dbus.SystemBus()
1259
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1260
avahi.DBUS_PATH_SERVER),
1261
avahi.DBUS_INTERFACE_SERVER)
1262
1856
# End of Avahi example code
1263
1857
if use_dbus:
1264
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1858
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1860
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
1863
use_dbus = False
1864
server_settings[u"use_dbus"] = False
1865
tcp_server.use_dbus = False
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
1878
global multiprocessing_manager
1879
multiprocessing_manager = multiprocessing.Manager()
1265
1880
1266
1881
client_class = Client
1267
1882
if use_dbus:
1268
client_class = ClientDBus
1269
clients.update(Set(
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
1891
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1270
1897
client_class(name = section,
1271
config= dict(client_config.items(section)))
1898
config= dict(client_config_items(
1899
client_config, section)))
1272
1900
for section in client_config.sections()))
1273
if not clients:
1901
if not tcp_server.clients:
1274
1902
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
1309
1903
1310
while clients:
1311
client = clients.pop()
1312
client.disable_hook = None
1313
client.disable()
1314
1315
atexit.register(cleanup)
1316
1317
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
1916
del pidfilename
1917
1318
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1319
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1320
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1321
1922
1323
1924
class MandosDBusService(dbus.service.Object):
1324
1925
"""A D-Bus proxy object"""
1325
1926
def __init__(self):
1326
dbus.service.Object.__init__(self, bus, "/")
1927
dbus.service.Object.__init__(self, bus, u"/")
1327
1928
_interface = u"se.bsnet.fukt.Mandos"
1328
1929
1329
@dbus.service.signal(_interface, signature="oa{sv}")
1330
def ClientAdded(self, objpath, properties):
1331
"D-Bus signal"
1332
pass
1333
1334
@dbus.service.signal(_interface, signature="s")
1335
def ClientNotFound(self, fingerprint):
1336
"D-Bus signal"
1337
pass
1338
1339
@dbus.service.signal(_interface, signature="os")
1930
@dbus.service.signal(_interface, signature=u"o")
1931
def ClientAdded(self, objpath):
1932
"D-Bus signal"
1933
pass
1934
1935
@dbus.service.signal(_interface, signature=u"ss")
1936
def ClientNotFound(self, fingerprint, address):
1937
"D-Bus signal"
1938
pass
1939
1940
@dbus.service.signal(_interface, signature=u"os")
1340
1941
def ClientRemoved(self, objpath, name):
1341
1942
"D-Bus signal"
1342
1943
pass
1343
1944
1344
@dbus.service.method(_interface, out_signature="ao")
1945
@dbus.service.method(_interface, out_signature=u"ao")
1345
1946
def GetAllClients(self):
1346
1947
"D-Bus method"
1347
return dbus.Array(c.dbus_object_path for c in clients)
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
1348
1950
1349
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1951
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
1350
1953
def GetAllClientsWithProperties(self):
1351
1954
"D-Bus method"
1352
1955
return dbus.Dictionary(
1353
((c.dbus_object_path, c.GetAllProperties())
1354
for c in clients),
1355
signature="oa{sv}")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1356
1959
1357
@dbus.service.method(_interface, in_signature="o")
1960
@dbus.service.method(_interface, in_signature=u"o")
1358
1961
def RemoveClient(self, object_path):
1359
1962
"D-Bus method"
1360
for c in clients:
1963
for c in tcp_server.clients:
1361
1964
if c.dbus_object_path == object_path:
1362
clients.remove(c)
1965
tcp_server.clients.remove(c)
1363
1966
c.remove_from_connection()
1364
1967
# Don't signal anything except ClientRemoved
1365
c.disable(signal=False)
1968
c.disable(quiet=True)
1366
1969
# Emit D-Bus signal
1367
1970
self.ClientRemoved(object_path, c.name)
1368
1971
return
1369
raise KeyError
1972
raise KeyError(object_path)
1370
1973
1371
1974
del _interface
1372
1975
1373
1976
mandos_dbus_service = MandosDBusService()
1374
1977
1375
for client in clients:
1978
def cleanup():
1979
"Cleanup function; run on exit"
1980
service.cleanup()
1981
1982
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
1984
if use_dbus:
1985
client.remove_from_connection()
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
1988
client.disable(quiet=True)
1989
if use_dbus:
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
1993
1994
atexit.register(cleanup)
1995
1996
for client in tcp_server.clients:
1376
1997
if use_dbus:
1377
1998
# Emit D-Bus signal
1378
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1379
client.GetAllProperties())
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1380
2000
client.enable()
1381
2001
1382
2002
tcp_server.enable()
1396
2016
1397
2017
try:
1398
2018
# From the Avahi example code
1399
server.connect_to_signal("StateChanged", server_state_changed)
1400
2019
try:
1401
server_state_changed(server.GetState())
2020
service.activate()
1402
2021
except dbus.exceptions.DBusException, error:
1403
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
1404
2024
sys.exit(1)
1405
2025
# End of Avahi example code
1406
2026
1413
2033
main_loop.run()
1414
2034
except AvahiError, error:
1415
2035
logger.critical(u"AvahiError: %s", error)
2036
cleanup()
1416
2037
sys.exit(1)
1417
2038
except KeyboardInterrupt:
1418
2039
if debug:
1419
2040
print >> sys.stderr
1420
logger.debug("Server received KeyboardInterrupt")
1421
logger.debug("Server exiting")
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2043
# Must run before the D-Bus bus name gets deregistered
2044
cleanup()
1422
2045
1423
2046
if __name__ == '__main__':
1424
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0