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- Committer: Teddy Hogeborn
- Date: 2010-10-13 06:12:52 UTC
- Revision ID: teddy@fukt.bsnet.se-20101013061252-3a918xedja5caya8
* debian/mandos-client.lintian-overrides: Added plugins.d/plymouth.
- 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
#
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13
# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
16
16
#
17
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# 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
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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
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import sys
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import re
50
50
import os
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import signal
52
from sets import Set
53
52
import subprocess
54
53
import atexit
55
54
import stat
56
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import logging
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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
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70
import ctypes
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71
import ctypes.util
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import xml.dom.minidom
73
import inspect
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74
69
75
try:
70
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
72
78
try:
73
79
from IN import SO_BINDTODEVICE
74
80
except ImportError:
75
# From /usr/include/asm/socket.h
76
SO_BINDTODEVICE = 25
77
78
79
version = "1.0.8"
80
81
logger = logging.Logger('mandos')
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.3"
85
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#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
82
88
syslogger = (logging.handlers.SysLogHandler
83
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
84
90
address = "/dev/log"))
85
91
syslogger.setFormatter(logging.Formatter
86
('Mandos [%(process)d]: %(levelname)s:'
87
' %(message)s'))
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
88
94
logger.addHandler(syslogger)
89
95
90
96
console = logging.StreamHandler()
91
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
92
' %(levelname)s: %(message)s'))
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
93
100
logger.addHandler(console)
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101
95
102
class AvahiError(Exception):
112
119
Attributes:
113
120
interface: integer; avahi.IF_UNSPEC or an interface index.
114
121
Used to optionally bind to the specified interface.
115
name: string; Example: 'Mandos'
116
type: string; Example: '_mandos._tcp'.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
117
124
See <http://www.dns-sd.org/ServiceTypes.html>
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125
port: integer; what port to announce
119
126
TXT: list of strings; TXT record for the service
122
129
max_renames: integer; maximum number of renames
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130
rename_count: integer; counter so we only rename after collisions
124
131
a sensible number of times
132
group: D-Bus Entry Group
133
server: D-Bus Server
134
bus: dbus.SystemBus()
125
135
"""
126
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
127
137
servicetype = None, port = None, TXT = None,
128
domain = "", host = "", max_renames = 32768,
129
protocol = avahi.PROTO_UNSPEC):
138
domain = u"", host = u"", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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140
self.interface = interface
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141
self.name = name
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142
self.type = servicetype
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147
self.rename_count = 0
138
148
self.max_renames = max_renames
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149
self.protocol = protocol
150
self.group = None # our entry group
151
self.server = None
152
self.bus = bus
140
153
def rename(self):
141
154
"""Derived from the Avahi example code"""
142
155
if self.rename_count >= self.max_renames:
144
157
u" after %i retries, exiting.",
145
158
self.rename_count)
146
159
raise AvahiServiceError(u"Too many renames")
147
self.name = server.GetAlternativeServiceName(self.name)
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
148
161
logger.info(u"Changing Zeroconf service name to %r ...",
149
str(self.name))
162
self.name)
150
163
syslogger.setFormatter(logging.Formatter
151
('Mandos (%s) [%%(process)d]:'
152
' %%(levelname)s: %%(message)s'
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
153
166
% self.name))
154
167
self.remove()
155
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)
156
174
self.rename_count += 1
157
175
def remove(self):
158
176
"""Derived from the Avahi example code"""
159
if group is not None:
160
group.Reset()
177
if self.group is not None:
178
self.group.Reset()
161
179
def add(self):
162
180
"""Derived from the Avahi example code"""
163
global group
164
if group is None:
165
group = dbus.Interface(bus.get_object
166
(avahi.DBUS_NAME,
167
server.EntryGroupNew()),
168
avahi.DBUS_INTERFACE_ENTRY_GROUP)
169
group.connect_to_signal('StateChanged',
170
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)
171
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
172
service.name, service.type)
173
group.AddService(
174
self.interface, # interface
175
self.protocol, # protocol
176
dbus.UInt32(0), # flags
177
self.name, self.type,
178
self.domain, self.host,
179
dbus.UInt16(self.port),
180
avahi.string_array_to_txt_array(self.TXT))
181
group.Commit()
182
183
# From the Avahi example code:
184
group = None # our entry group
185
# End of Avahi example code
186
187
188
def _datetime_to_dbus(dt, variant_level=0):
189
"""Convert a UTC datetime.datetime() to a D-Bus type."""
190
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())
191
237
192
238
193
239
class Client(object):
194
240
"""A representation of a client host served by this server.
195
241
196
242
Attributes:
197
name: string; from the config file, used in log messages and
198
D-Bus identifiers
199
fingerprint: string (40 or 32 hexadecimal digits); used to
200
uniquely identify the client
201
secret: bytestring; sent verbatim (over TLS) to client
202
host: string; available for use by the checker command
203
created: datetime.datetime(); (UTC) object creation
204
last_enabled: datetime.datetime(); (UTC)
205
enabled: bool()
206
last_checked_ok: datetime.datetime(); (UTC) or None
207
timeout: datetime.timedelta(); How long from last_checked_ok
208
until this client is invalid
209
interval: datetime.timedelta(); How often to start a new checker
210
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
211
246
checker: subprocess.Popen(); a running checker process used
212
247
to see if the client lives.
213
248
'None' if no process is running.
214
checker_initiator_tag: a gobject event source tag, or None
215
disable_initiator_tag: - '' -
216
checker_callback_tag: - '' -
217
checker_command: string; External command which is run to check if
218
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
219
252
runtime with vars(self) as dict, so that for
220
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
221
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.
222
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
223
287
def timeout_milliseconds(self):
224
288
"Return the 'timeout' attribute in milliseconds"
225
return ((self.timeout.days * 24 * 60 * 60 * 1000)
226
+ (self.timeout.seconds * 1000)
227
+ (self.timeout.microseconds // 1000))
289
return self._timedelta_to_milliseconds(self.timeout)
228
290
229
291
def interval_milliseconds(self):
230
292
"Return the 'interval' attribute in milliseconds"
231
return ((self.interval.days * 24 * 60 * 60 * 1000)
232
+ (self.interval.seconds * 1000)
233
+ (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)
234
297
235
298
def __init__(self, name = None, disable_hook=None, config=None):
236
299
"""Note: the 'checker' key in 'config' sets the
243
306
# Uppercase and remove spaces from fingerprint for later
244
307
# comparison purposes with return value from the fingerprint()
245
308
# function
246
self.fingerprint = (config["fingerprint"].upper()
309
self.fingerprint = (config[u"fingerprint"].upper()
247
310
.replace(u" ", u""))
248
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
249
if "secret" in config:
250
self.secret = config["secret"].decode(u"base64")
251
elif "secfile" in config:
252
with closing(open(os.path.expanduser
253
(os.path.expandvars
254
(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:
255
318
self.secret = secfile.read()
256
319
else:
257
320
raise TypeError(u"No secret or secfile for client %s"
258
321
% self.name)
259
self.host = config.get("host", "")
322
self.host = config.get(u"host", u"")
260
323
self.created = datetime.datetime.utcnow()
261
324
self.enabled = False
325
self.last_approval_request = None
262
326
self.last_enabled = None
263
327
self.last_checked_ok = None
264
self.timeout = string_to_delta(config["timeout"])
265
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"])
266
330
self.disable_hook = disable_hook
267
331
self.checker = None
268
332
self.checker_initiator_tag = None
269
333
self.disable_initiator_tag = None
270
334
self.checker_callback_tag = None
271
self.checker_command = config["checker"]
335
self.checker_command = config[u"checker"]
272
336
self.current_checker_command = None
273
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())
274
347
348
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
275
353
def enable(self):
276
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()
277
359
self.last_enabled = datetime.datetime.utcnow()
278
360
# Schedule a new checker to be started an 'interval' from now,
279
361
# and every interval from then on.
280
362
self.checker_initiator_tag = (gobject.timeout_add
281
363
(self.interval_milliseconds(),
282
364
self.start_checker))
283
# Also start a new checker *right now*.
284
self.start_checker()
285
365
# Schedule a disable() when 'timeout' has passed
286
366
self.disable_initiator_tag = (gobject.timeout_add
287
367
(self.timeout_milliseconds(),
288
368
self.disable))
289
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
290
372
291
def disable(self):
373
def disable(self, quiet=True):
292
374
"""Disable this client."""
293
375
if not getattr(self, "enabled", False):
294
376
return False
295
logger.info(u"Disabling client %s", self.name)
296
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):
297
382
gobject.source_remove(self.disable_initiator_tag)
298
383
self.disable_initiator_tag = None
299
if getattr(self, "checker_initiator_tag", False):
384
if getattr(self, u"checker_initiator_tag", False):
300
385
gobject.source_remove(self.checker_initiator_tag)
301
386
self.checker_initiator_tag = None
302
387
self.stop_checker()
339
424
(self.timeout_milliseconds(),
340
425
self.disable))
341
426
427
def need_approval(self):
428
self.last_approval_request = datetime.datetime.utcnow()
429
342
430
def start_checker(self):
343
431
"""Start a new checker subprocess if one is not running.
344
432
350
438
# client would inevitably timeout, since no checker would get
351
439
# a chance to run to completion. If we instead leave running
352
440
# checkers alone, the checker would have to take more time
353
# than 'timeout' for the client to be declared invalid, which
354
# is as it should be.
441
# than 'timeout' for the client to be disabled, which is as it
442
# should be.
355
443
356
444
# If a checker exists, make sure it is not a zombie
357
if self.checker is not None:
445
try:
358
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:
359
452
if pid:
360
logger.warning("Checker was a zombie")
453
logger.warning(u"Checker was a zombie")
361
454
gobject.source_remove(self.checker_callback_tag)
362
455
self.checker_callback(pid, status,
363
456
self.current_checker_command)
368
461
command = self.checker_command % self.host
369
462
except TypeError:
370
463
# Escape attributes for the shell
371
escaped_attrs = dict((key, re.escape(str(val)))
372
for key, val in
373
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
374
472
try:
375
473
command = self.checker_command % escaped_attrs
376
474
except TypeError, error:
387
485
# always replaced by /dev/null.)
388
486
self.checker = subprocess.Popen(command,
389
487
close_fds=True,
390
shell=True, cwd="/")
488
shell=True, cwd=u"/")
391
489
self.checker_callback_tag = (gobject.child_watch_add
392
490
(self.checker.pid,
393
491
self.checker_callback,
409
507
if self.checker_callback_tag:
410
508
gobject.source_remove(self.checker_callback_tag)
411
509
self.checker_callback_tag = None
412
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
413
511
return
414
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
415
513
try:
416
514
os.kill(self.checker.pid, signal.SIGTERM)
417
#os.sleep(0.5)
515
#time.sleep(0.5)
418
516
#if self.checker.poll() is None:
419
517
# os.kill(self.checker.pid, signal.SIGKILL)
420
518
except OSError, error:
421
519
if error.errno != errno.ESRCH: # No such process
422
520
raise
423
521
self.checker = None
424
425
def still_valid(self):
426
"""Has the timeout not yet passed for this client?"""
427
if not getattr(self, "enabled", False):
428
return False
429
now = datetime.datetime.utcnow()
430
if self.last_checked_ok is None:
431
return now < (self.created + self.timeout)
432
else:
433
return now < (self.last_checked_ok + self.timeout)
434
435
436
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):
437
713
"""A Client class using D-Bus
438
714
439
715
Attributes:
440
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
716
dbus_object_path: dbus.ObjectPath
717
bus: dbus.SystemBus()
441
718
"""
719
720
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
722
442
723
# dbus.service.Object doesn't use super(), so we can't either.
443
724
444
def __init__(self, *args, **kwargs):
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
self.bus = bus
445
728
Client.__init__(self, *args, **kwargs)
446
729
# Only now, when this client is initialized, can it show up on
447
730
# the D-Bus
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
448
734
self.dbus_object_path = (dbus.ObjectPath
449
("/clients/"
450
+ self.name.replace(".", "_")))
451
dbus.service.Object.__init__(self, bus,
452
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
453
761
def enable(self):
454
oldstate = getattr(self, "enabled", False)
762
oldstate = getattr(self, u"enabled", False)
455
763
r = Client.enable(self)
456
764
if oldstate != self.enabled:
457
765
# Emit D-Bus signals
458
self.PropertyChanged(dbus.String(u"enabled"),
766
self.PropertyChanged(dbus.String(u"Enabled"),
459
767
dbus.Boolean(True, variant_level=1))
460
self.PropertyChanged(dbus.String(u"last_enabled"),
461
(_datetime_to_dbus(self.last_enabled,
462
variant_level=1)))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
463
772
return r
464
773
465
def disable(self, signal = True):
466
oldstate = getattr(self, "enabled", False)
467
r = Client.disable(self)
468
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:
469
778
# Emit D-Bus signal
470
self.PropertyChanged(dbus.String(u"enabled"),
779
self.PropertyChanged(dbus.String(u"Enabled"),
471
780
dbus.Boolean(False, variant_level=1))
472
781
return r
473
782
476
785
self.remove_from_connection()
477
786
except LookupError:
478
787
pass
479
if hasattr(dbus.service.Object, "__del__"):
480
dbus.service.Object.__del__(self, *args, **kwargs)
788
if hasattr(DBusObjectWithProperties, u"__del__"):
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
481
790
Client.__del__(self, *args, **kwargs)
482
791
483
792
def checker_callback(self, pid, condition, command,
485
794
self.checker_callback_tag = None
486
795
self.checker = None
487
796
# Emit D-Bus signal
488
self.PropertyChanged(dbus.String(u"checker_running"),
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
489
798
dbus.Boolean(False, variant_level=1))
490
799
if os.WIFEXITED(condition):
491
800
exitstatus = os.WEXITSTATUS(condition)
506
815
r = Client.checked_ok(self, *args, **kwargs)
507
816
# Emit D-Bus signal
508
817
self.PropertyChanged(
509
dbus.String(u"last_checked_ok"),
510
(_datetime_to_dbus(self.last_checked_ok,
511
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)))
512
830
return r
513
831
514
832
def start_checker(self, *args, **kwargs):
524
842
# Emit D-Bus signal
525
843
self.CheckerStarted(self.current_checker_command)
526
844
self.PropertyChanged(
527
dbus.String("checker_running"),
845
dbus.String(u"CheckerRunning"),
528
846
dbus.Boolean(True, variant_level=1))
529
847
return r
530
848
531
849
def stop_checker(self, *args, **kwargs):
532
old_checker = getattr(self, "checker", None)
850
old_checker = getattr(self, u"checker", None)
533
851
r = Client.stop_checker(self, *args, **kwargs)
534
852
if (old_checker is not None
535
and getattr(self, "checker", None) is None):
536
self.PropertyChanged(dbus.String(u"checker_running"),
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
537
855
dbus.Boolean(False, variant_level=1))
538
856
return r
539
540
## 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
541
871
_interface = u"se.bsnet.fukt.Mandos.Client"
542
872
543
# CheckedOK - method
544
CheckedOK = dbus.service.method(_interface)(checked_ok)
545
CheckedOK.__name__ = "CheckedOK"
873
## Signals
546
874
547
875
# CheckerCompleted - signal
548
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
549
877
def CheckerCompleted(self, exitcode, waitstatus, command):
550
878
"D-Bus signal"
551
879
pass
552
880
553
881
# CheckerStarted - signal
554
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
555
883
def CheckerStarted(self, command):
556
884
"D-Bus signal"
557
885
pass
558
886
559
# GetAllProperties - method
560
@dbus.service.method(_interface, out_signature="a{sv}")
561
def GetAllProperties(self):
562
"D-Bus method"
563
return dbus.Dictionary({
564
dbus.String("name"):
565
dbus.String(self.name, variant_level=1),
566
dbus.String("fingerprint"):
567
dbus.String(self.fingerprint, variant_level=1),
568
dbus.String("host"):
569
dbus.String(self.host, variant_level=1),
570
dbus.String("created"):
571
_datetime_to_dbus(self.created, variant_level=1),
572
dbus.String("last_enabled"):
573
(_datetime_to_dbus(self.last_enabled,
574
variant_level=1)
575
if self.last_enabled is not None
576
else dbus.Boolean(False, variant_level=1)),
577
dbus.String("enabled"):
578
dbus.Boolean(self.enabled, variant_level=1),
579
dbus.String("last_checked_ok"):
580
(_datetime_to_dbus(self.last_checked_ok,
581
variant_level=1)
582
if self.last_checked_ok is not None
583
else dbus.Boolean (False, variant_level=1)),
584
dbus.String("timeout"):
585
dbus.UInt64(self.timeout_milliseconds(),
586
variant_level=1),
587
dbus.String("interval"):
588
dbus.UInt64(self.interval_milliseconds(),
589
variant_level=1),
590
dbus.String("checker"):
591
dbus.String(self.checker_command,
592
variant_level=1),
593
dbus.String("checker_running"):
594
dbus.Boolean(self.checker is not None,
595
variant_level=1),
596
dbus.String("object_path"):
597
dbus.ObjectPath(self.dbus_object_path,
598
variant_level=1)
599
}, signature="sv")
600
601
# IsStillValid - method
602
@dbus.service.method(_interface, out_signature="b")
603
def IsStillValid(self):
604
return self.still_valid()
605
606
887
# PropertyChanged - signal
607
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
608
889
def PropertyChanged(self, property, value):
609
890
"D-Bus signal"
610
891
pass
611
892
612
# ReceivedSecret - signal
893
# GotSecret - signal
613
894
@dbus.service.signal(_interface)
614
def ReceivedSecret(self):
615
"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
"""
616
900
pass
617
901
618
902
# Rejected - signal
619
@dbus.service.signal(_interface)
620
def Rejected(self):
903
@dbus.service.signal(_interface, signature=u"s")
904
def Rejected(self, reason):
621
905
"D-Bus signal"
622
906
pass
623
907
624
# SetChecker - method
625
@dbus.service.method(_interface, in_signature="s")
626
def SetChecker(self, checker):
627
"D-Bus setter method"
628
self.checker_command = checker
629
# Emit D-Bus signal
630
self.PropertyChanged(dbus.String(u"checker"),
631
dbus.String(self.checker_command,
632
variant_level=1))
633
634
# SetHost - method
635
@dbus.service.method(_interface, in_signature="s")
636
def SetHost(self, host):
637
"D-Bus setter method"
638
self.host = host
639
# Emit D-Bus signal
640
self.PropertyChanged(dbus.String(u"host"),
641
dbus.String(self.host, variant_level=1))
642
643
# SetInterval - method
644
@dbus.service.method(_interface, in_signature="t")
645
def SetInterval(self, milliseconds):
646
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
647
# Emit D-Bus signal
648
self.PropertyChanged(dbus.String(u"interval"),
649
(dbus.UInt64(self.interval_milliseconds(),
650
variant_level=1)))
651
652
# SetSecret - method
653
@dbus.service.method(_interface, in_signature="ay",
654
byte_arrays=True)
655
def SetSecret(self, secret):
656
"D-Bus setter method"
657
self.secret = str(secret)
658
659
# SetTimeout - method
660
@dbus.service.method(_interface, in_signature="t")
661
def SetTimeout(self, milliseconds):
662
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
663
# Emit D-Bus signal
664
self.PropertyChanged(dbus.String(u"timeout"),
665
(dbus.UInt64(self.timeout_milliseconds(),
666
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()
667
925
668
926
# Enable - method
669
Enable = dbus.service.method(_interface)(enable)
670
Enable.__name__ = "Enable"
927
@dbus.service.method(_interface)
928
def Enable(self):
929
"D-Bus method"
930
self.enable()
671
931
672
932
# StartChecker - method
673
933
@dbus.service.method(_interface)
682
942
self.disable()
683
943
684
944
# StopChecker - method
685
StopChecker = dbus.service.method(_interface)(stop_checker)
686
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)
687
1134
688
1135
del _interface
689
1136
690
1137
691
class ClientHandler(SocketServer.BaseRequestHandler, object):
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):
692
1165
"""A class to handle client connections.
693
1166
694
1167
Instantiated once for each connection to handle it.
695
1168
Note: This will run in its own forked process."""
696
1169
697
1170
def handle(self):
698
logger.info(u"TCP connection from: %s",
699
unicode(self.client_address))
700
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
701
# Open IPC pipe to parent process
702
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
703
1177
session = (gnutls.connection
704
1178
.ClientSession(self.request,
705
1179
gnutls.connection
706
1180
.X509Credentials()))
707
708
line = self.request.makefile().readline()
709
logger.debug(u"Protocol version: %r", line)
710
try:
711
if int(line.strip().split()[0]) > 1:
712
raise RuntimeError
713
except (ValueError, IndexError, RuntimeError), error:
714
logger.error(u"Unknown protocol version: %s", error)
715
return
716
1181
717
1182
# Note: gnutls.connection.X509Credentials is really a
718
1183
# generic GnuTLS certificate credentials object so long as
719
1184
# no X.509 keys are added to it. Therefore, we can use it
720
1185
# here despite using OpenPGP certificates.
721
722
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
723
# "+AES-256-CBC", "+SHA1",
724
# "+COMP-NULL", "+CTYPE-OPENPGP",
725
# "+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"))
726
1191
# Use a fallback default, since this MUST be set.
727
1192
priority = self.server.gnutls_priority
728
1193
if priority is None:
729
priority = "NORMAL"
1194
priority = u"NORMAL"
730
1195
(gnutls.library.functions
731
1196
.gnutls_priority_set_direct(session._c_object,
732
1197
priority, None))
733
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
734
1211
try:
735
1212
session.handshake()
736
1213
except gnutls.errors.GNUTLSError, error:
739
1216
# established. Just abandon the request.
740
1217
return
741
1218
logger.debug(u"Handshake succeeded")
1219
1220
approval_required = False
742
1221
try:
743
fpr = self.fingerprint(self.peer_certificate(session))
744
except (TypeError, gnutls.errors.GNUTLSError), error:
745
logger.warning(u"Bad certificate: %s", error)
746
session.bye()
747
return
748
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()
749
1308
750
for c in self.server.clients:
751
if c.fingerprint == fpr:
752
client = c
753
break
754
else:
755
ipc.write("NOTFOUND %s\n" % fpr)
756
session.bye()
757
return
758
# Have to check if client.still_valid(), since it is
759
# possible that the client timed out while establishing
760
# the GnuTLS session.
761
if not client.still_valid():
762
ipc.write("INVALID %s\n" % client.name)
763
session.bye()
764
return
765
ipc.write("SENDING %s\n" % client.name)
766
sent_size = 0
767
while sent_size < len(client.secret):
768
sent = session.send(client.secret[sent_size:])
769
logger.debug(u"Sent: %d, remaining: %d",
770
sent, len(client.secret)
771
- (sent_size + sent))
772
sent_size += sent
773
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")
774
1316
775
1317
@staticmethod
776
1318
def peer_certificate(session):
786
1328
.gnutls_certificate_get_peers
787
1329
(session._c_object, ctypes.byref(list_size)))
788
1330
if not bool(cert_list) and list_size.value != 0:
789
raise gnutls.errors.GNUTLSError("error getting peer"
790
" certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
791
1333
if list_size.value == 0:
792
1334
return None
793
1335
cert = cert_list[0]
819
1361
if crtverify.value != 0:
820
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
821
1363
raise (gnutls.errors.CertificateSecurityError
822
("Verify failed"))
1364
(u"Verify failed"))
823
1365
# New buffer for the fingerprint
824
1366
buf = ctypes.create_string_buffer(20)
825
1367
buf_len = ctypes.c_size_t()
836
1378
return hex_fpr
837
1379
838
1380
839
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
840
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
841
842
Assumes a gobject.MainLoop event loop.
843
"""
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 """
844
1397
def process_request(self, request, client_address):
845
1398
"""Overrides and wraps the original process_request().
846
1399
847
This function creates a new pipe in self.pipe
1400
This function creates a new pipe in self.pipe
848
1401
"""
849
self.pipe = os.pipe()
850
super(ForkingMixInWithPipe,
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
851
1405
self).process_request(request, client_address)
852
os.close(self.pipe[1]) # close write end
853
# Call "handle_ipc" for both data and EOF events
854
gobject.io_add_watch(self.pipe[0],
855
gobject.IO_IN | gobject.IO_HUP,
856
self.handle_ipc)
857
def handle_ipc(source, condition):
1406
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
858
1410
"""Dummy function; override as necessary"""
859
os.close(source)
860
return False
861
862
863
class IPv6_TCPServer(ForkingMixInWithPipe,
864
SocketServer.TCPServer, object):
1411
pass
1412
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
socketserver.TCPServer, object):
865
1415
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
866
1416
867
1417
Attributes:
868
1418
enabled: Boolean; whether this server is activated yet
869
1419
interface: None or a network interface name (string)
870
1420
use_ipv6: Boolean; to use IPv6 or not
871
----
872
clients: Set() of Client objects
873
gnutls_priority GnuTLS priority string
874
use_dbus: Boolean; to emit D-Bus signals or not
875
1421
"""
876
1422
def __init__(self, server_address, RequestHandlerClass,
877
interface=None, use_ipv6=True, clients=None,
878
gnutls_priority=None, use_dbus=True):
879
self.enabled = False
1423
interface=None, use_ipv6=True):
880
1424
self.interface = interface
881
1425
if use_ipv6:
882
1426
self.address_family = socket.AF_INET6
883
self.clients = clients
884
self.use_dbus = use_dbus
885
self.gnutls_priority = gnutls_priority
886
SocketServer.TCPServer.__init__(self, server_address,
1427
socketserver.TCPServer.__init__(self, server_address,
887
1428
RequestHandlerClass)
888
1429
def server_bind(self):
889
1430
"""This overrides the normal server_bind() function
890
1431
to bind to an interface if one was specified, and also NOT to
891
1432
bind to an address or port if they were not specified."""
892
1433
if self.interface is not None:
893
try:
894
self.socket.setsockopt(socket.SOL_SOCKET,
895
SO_BINDTODEVICE,
896
self.interface + '\0')
897
except socket.error, error:
898
if error[0] == errno.EPERM:
899
logger.error(u"No permission to"
900
u" bind to interface %s",
901
self.interface)
902
else:
903
raise
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
904
1455
# Only bind(2) the socket if we really need to.
905
1456
if self.server_address[0] or self.server_address[1]:
906
1457
if not self.server_address[0]:
907
1458
if self.address_family == socket.AF_INET6:
908
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
909
1460
else:
910
1461
any_address = socket.INADDR_ANY
911
1462
self.server_address = (any_address,
919
1470
# 0, # flowinfo
920
1471
# if_nametoindex
921
1472
# (self.interface))
922
return SocketServer.TCPServer.server_bind(self)
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)
923
1499
def server_activate(self):
924
1500
if self.enabled:
925
return SocketServer.TCPServer.server_activate(self)
1501
return socketserver.TCPServer.server_activate(self)
926
1502
def enable(self):
927
1503
self.enabled = True
928
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):
929
1513
condition_names = {
930
gobject.IO_IN: "IN", # There is data to read.
931
gobject.IO_OUT: "OUT", # Data can be written (without
932
# blocking).
933
gobject.IO_PRI: "PRI", # There is urgent data to read.
934
gobject.IO_ERR: "ERR", # Error condition.
935
gobject.IO_HUP: "HUP" # Hung up (the connection has been
936
# broken, usually for pipes and
937
# 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).
938
1522
}
939
1523
conditions_string = ' | '.join(name
940
1524
for cond, name in
941
1525
condition_names.iteritems()
942
1526
if cond & condition)
943
logger.debug("Handling IPC: FD = %d, condition = %s", source,
944
conditions_string)
945
946
# Turn the pipe file descriptor into a Python file object
947
if source not in file_objects:
948
file_objects[source] = os.fdopen(source, "r", 1)
949
950
# Read a line from the file object
951
cmdline = file_objects[source].readline()
952
if not cmdline: # Empty line means end of file
953
# close the IPC pipe
954
file_objects[source].close()
955
del file_objects[source]
956
957
# Stop calling this function
958
return False
959
960
logger.debug("IPC command: %r", cmdline)
961
962
# Parse and act on command
963
cmd, args = cmdline.rstrip("\r\n").split(None, 1)
964
965
if cmd == "NOTFOUND":
966
logger.warning(u"Client not found for fingerprint: %s",
967
args)
968
if self.use_dbus:
969
# Emit D-Bus signal
970
mandos_dbus_service.ClientNotFound(args)
971
elif cmd == "INVALID":
972
for client in self.clients:
973
if client.name == args:
974
logger.warning(u"Client %s is invalid", args)
975
if self.use_dbus:
976
# Emit D-Bus signal
977
client.Rejected()
978
break
979
else:
980
logger.error(u"Unknown client %s is invalid", args)
981
elif cmd == "SENDING":
982
for client in self.clients:
983
if client.name == args:
984
logger.info(u"Sending secret to %s", client.name)
985
client.checked_ok()
986
if self.use_dbus:
987
# Emit D-Bus signal
988
client.ReceivedSecret()
989
break
990
else:
991
logger.error(u"Sending secret to unknown client %s",
992
args)
993
else:
994
logger.error("Unknown IPC command: %r", cmdline)
995
996
# 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
997
1579
return True
998
1580
999
1581
1000
1582
def string_to_delta(interval):
1001
1583
"""Parse a string and return a datetime.timedelta
1002
1584
1003
>>> string_to_delta('7d')
1585
>>> string_to_delta(u'7d')
1004
1586
datetime.timedelta(7)
1005
>>> string_to_delta('60s')
1587
>>> string_to_delta(u'60s')
1006
1588
datetime.timedelta(0, 60)
1007
>>> string_to_delta('60m')
1589
>>> string_to_delta(u'60m')
1008
1590
datetime.timedelta(0, 3600)
1009
>>> string_to_delta('24h')
1591
>>> string_to_delta(u'24h')
1010
1592
datetime.timedelta(1)
1011
1593
>>> string_to_delta(u'1w')
1012
1594
datetime.timedelta(7)
1013
>>> string_to_delta('5m 30s')
1595
>>> string_to_delta(u'5m 30s')
1014
1596
datetime.timedelta(0, 330)
1015
1597
"""
1016
1598
timevalue = datetime.timedelta(0)
1029
1611
elif suffix == u"w":
1030
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1031
1613
else:
1032
raise ValueError
1033
except (ValueError, IndexError):
1034
raise ValueError
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
1035
1617
timevalue += delta
1036
1618
return timevalue
1037
1619
1038
1620
1039
def server_state_changed(state):
1040
"""Derived from the Avahi example code"""
1041
if state == avahi.SERVER_COLLISION:
1042
logger.error(u"Zeroconf server name collision")
1043
service.remove()
1044
elif state == avahi.SERVER_RUNNING:
1045
service.add()
1046
1047
1048
def entry_group_state_changed(state, error):
1049
"""Derived from the Avahi example code"""
1050
logger.debug(u"Avahi state change: %i", state)
1051
1052
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1053
logger.debug(u"Zeroconf service established.")
1054
elif state == avahi.ENTRY_GROUP_COLLISION:
1055
logger.warning(u"Zeroconf service name collision.")
1056
service.rename()
1057
elif state == avahi.ENTRY_GROUP_FAILURE:
1058
logger.critical(u"Avahi: Error in group state changed %s",
1059
unicode(error))
1060
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1061
1062
1621
def if_nametoindex(interface):
1063
"""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."""
1064
1625
global if_nametoindex
1065
1626
try:
1066
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1067
(ctypes.util.find_library("c"))
1628
(ctypes.util.find_library(u"c"))
1068
1629
.if_nametoindex)
1069
1630
except (OSError, AttributeError):
1070
if "struct" not in sys.modules:
1071
import struct
1072
if "fcntl" not in sys.modules:
1073
import fcntl
1631
logger.warning(u"Doing if_nametoindex the hard way")
1074
1632
def if_nametoindex(interface):
1075
1633
"Get an interface index the hard way, i.e. using fcntl()"
1076
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1077
with closing(socket.socket()) as s:
1635
with contextlib.closing(socket.socket()) as s:
1078
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1079
struct.pack("16s16x", interface))
1080
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]
1081
1641
return interface_index
1082
1642
return if_nametoindex(interface)
1083
1643
1090
1650
sys.exit()
1091
1651
os.setsid()
1092
1652
if not nochdir:
1093
os.chdir("/")
1653
os.chdir(u"/")
1094
1654
if os.fork():
1095
1655
sys.exit()
1096
1656
if not noclose:
1098
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1099
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
1100
1660
raise OSError(errno.ENODEV,
1101
"/dev/null not a character device")
1661
u"%s not a character device"
1662
% os.path.devnull)
1102
1663
os.dup2(null, sys.stdin.fileno())
1103
1664
os.dup2(null, sys.stdout.fileno())
1104
1665
os.dup2(null, sys.stderr.fileno())
1108
1669
1109
1670
def main():
1110
1671
1111
######################################################################
1672
##################################################################
1112
1673
# Parsing of options, both command line and config file
1113
1674
1114
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1115
parser.add_option("-i", "--interface", type="string",
1116
metavar="IF", help="Bind to interface IF")
1117
parser.add_option("-a", "--address", type="string",
1118
help="Address to listen for requests on")
1119
parser.add_option("-p", "--port", type="int",
1120
help="Port number to receive requests on")
1121
parser.add_option("--check", action="store_true",
1122
help="Run self-test")
1123
parser.add_option("--debug", action="store_true",
1124
help="Debug mode; run in foreground and log to"
1125
" terminal")
1126
parser.add_option("--priority", type="string", help="GnuTLS"
1127
" priority string (see GnuTLS documentation)")
1128
parser.add_option("--servicename", type="string", metavar="NAME",
1129
help="Zeroconf service name")
1130
parser.add_option("--configdir", type="string",
1131
default="/etc/mandos", metavar="DIR",
1132
help="Directory to search for configuration"
1133
" files")
1134
parser.add_option("--no-dbus", action="store_false",
1135
dest="use_dbus",
1136
help="Do not provide D-Bus system bus"
1137
" interface")
1138
parser.add_option("--no-ipv6", action="store_false",
1139
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")
1140
1702
options = parser.parse_args()[0]
1141
1703
1142
1704
if options.check:
1145
1707
sys.exit()
1146
1708
1147
1709
# Default values for config file for server-global settings
1148
server_defaults = { "interface": "",
1149
"address": "",
1150
"port": "",
1151
"debug": "False",
1152
"priority":
1153
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1154
"servicename": "Mandos",
1155
"use_dbus": "True",
1156
"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"",
1157
1720
}
1158
1721
1159
1722
# Parse config file for server-global settings
1160
server_config = ConfigParser.SafeConfigParser(server_defaults)
1723
server_config = configparser.SafeConfigParser(server_defaults)
1161
1724
del server_defaults
1162
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
1163
1727
# Convert the SafeConfigParser object to a dict
1164
1728
server_settings = server_config.defaults()
1165
1729
# Use the appropriate methods on the non-string config options
1166
server_settings["debug"] = server_config.getboolean("DEFAULT",
1167
"debug")
1168
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1169
"use_dbus")
1170
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1171
"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)
1172
1733
if server_settings["port"]:
1173
server_settings["port"] = server_config.getint("DEFAULT",
1174
"port")
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
1175
1736
del server_config
1176
1737
1177
1738
# Override the settings from the config file with command line
1178
1739
# options, if set.
1179
for option in ("interface", "address", "port", "debug",
1180
"priority", "servicename", "configdir",
1181
"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"):
1182
1743
value = getattr(options, option)
1183
1744
if value is not None:
1184
1745
server_settings[option] = value
1185
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])
1186
1751
# Now we have our good server settings in "server_settings"
1187
1752
1188
1753
##################################################################
1189
1754
1190
1755
# For convenience
1191
debug = server_settings["debug"]
1192
use_dbus = server_settings["use_dbus"]
1193
use_ipv6 = server_settings["use_ipv6"]
1194
1195
if not debug:
1196
syslogger.setLevel(logging.WARNING)
1197
console.setLevel(logging.WARNING)
1198
1199
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":
1200
1762
syslogger.setFormatter(logging.Formatter
1201
('Mandos (%s) [%%(process)d]:'
1202
' %%(levelname)s: %%(message)s'
1203
% server_settings["servicename"]))
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
1204
1766
1205
1767
# Parse config file with clients
1206
client_defaults = { "timeout": "1h",
1207
"interval": "5m",
1208
"checker": "fping -q -- %%(host)s",
1209
"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",
1210
1774
}
1211
client_config = ConfigParser.SafeConfigParser(client_defaults)
1212
client_config.read(os.path.join(server_settings["configdir"],
1213
"clients.conf"))
1214
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
1778
1215
1779
global mandos_dbus_service
1216
1780
mandos_dbus_service = None
1217
1781
1218
clients = Set()
1219
tcp_server = IPv6_TCPServer((server_settings["address"],
1220
server_settings["port"]),
1221
ClientHandler,
1222
interface=
1223
server_settings["interface"],
1224
use_ipv6=use_ipv6,
1225
clients=clients,
1226
gnutls_priority=
1227
server_settings["priority"],
1228
use_dbus=use_dbus)
1229
pidfilename = "/var/run/mandos.pid"
1230
try:
1231
pidfile = open(pidfilename, "w")
1232
except IOError:
1233
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)
1234
1797
1235
1798
try:
1236
uid = pwd.getpwnam("_mandos").pw_uid
1237
gid = pwd.getpwnam("_mandos").pw_gid
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1238
1801
except KeyError:
1239
1802
try:
1240
uid = pwd.getpwnam("mandos").pw_uid
1241
gid = pwd.getpwnam("mandos").pw_gid
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
1242
1805
except KeyError:
1243
1806
try:
1244
uid = pwd.getpwnam("nobody").pw_uid
1245
gid = pwd.getpwnam("nogroup").pw_gid
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1246
1809
except KeyError:
1247
1810
uid = 65534
1248
1811
gid = 65534
1253
1816
if error[0] != errno.EPERM:
1254
1817
raise error
1255
1818
1256
# 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
1257
1827
if debug:
1828
# Enable all possible GnuTLS debugging
1829
1258
1830
# "Use a log level over 10 to enable all debugging options."
1259
1831
# - GnuTLS manual
1260
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
1261
1833
1262
1834
@gnutls.library.types.gnutls_log_func
1263
1835
def debug_gnutls(level, string):
1264
logger.debug("GnuTLS: %s", string[:-1])
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1265
1837
1266
1838
(gnutls.library.functions
1267
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)
1268
1849
1269
global service
1270
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1271
service = AvahiService(name = server_settings["servicename"],
1272
servicetype = "_mandos._tcp",
1273
protocol = protocol)
1274
if server_settings["interface"]:
1275
service.interface = (if_nametoindex
1276
(server_settings["interface"]))
1850
# Need to fork before connecting to D-Bus
1851
if not debug:
1852
# Close all input and output, do double fork, etc.
1853
daemon()
1277
1854
1278
1855
global main_loop
1279
global bus
1280
global server
1281
1856
# From the Avahi example code
1282
1857
DBusGMainLoop(set_as_default=True )
1283
1858
main_loop = gobject.MainLoop()
1284
1859
bus = dbus.SystemBus()
1285
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1286
avahi.DBUS_PATH_SERVER),
1287
avahi.DBUS_INTERFACE_SERVER)
1288
1860
# End of Avahi example code
1289
1861
if use_dbus:
1290
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1862
try:
1863
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1864
bus, do_not_queue=True)
1865
except dbus.exceptions.NameExistsException, e:
1866
logger.error(unicode(e) + u", disabling D-Bus")
1867
use_dbus = False
1868
server_settings[u"use_dbus"] = False
1869
tcp_server.use_dbus = False
1870
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1871
service = AvahiService(name = server_settings[u"servicename"],
1872
servicetype = u"_mandos._tcp",
1873
protocol = protocol, bus = bus)
1874
if server_settings["interface"]:
1875
service.interface = (if_nametoindex
1876
(str(server_settings[u"interface"])))
1877
1878
global multiprocessing_manager
1879
multiprocessing_manager = multiprocessing.Manager()
1291
1880
1292
1881
client_class = Client
1293
1882
if use_dbus:
1294
client_class = ClientDBus
1295
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(
1296
1897
client_class(name = section,
1297
config= dict(client_config.items(section)))
1898
config= dict(client_config_items(
1899
client_config, section)))
1298
1900
for section in client_config.sections()))
1299
if not clients:
1901
if not tcp_server.clients:
1300
1902
logger.warning(u"No clients defined")
1301
1302
if debug:
1303
# Redirect stdin so all checkers get /dev/null
1304
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1305
os.dup2(null, sys.stdin.fileno())
1306
if null > 2:
1307
os.close(null)
1308
else:
1309
# No console logging
1310
logger.removeHandler(console)
1311
# Close all input and output, do double fork, etc.
1312
daemon()
1313
1314
try:
1315
with closing(pidfile):
1316
pid = os.getpid()
1317
pidfile.write(str(pid) + "\n")
1318
del pidfile
1319
except IOError:
1320
logger.error(u"Could not write to file %r with PID %d",
1321
pidfilename, pid)
1322
except NameError:
1323
# "pidfile" was never created
1324
pass
1325
del pidfilename
1326
1327
def cleanup():
1328
"Cleanup function; run on exit"
1329
global group
1330
# From the Avahi example code
1331
if not group is None:
1332
group.Free()
1333
group = None
1334
# End of Avahi example code
1335
1903
1336
while clients:
1337
client = clients.pop()
1338
client.disable_hook = None
1339
client.disable()
1340
1341
atexit.register(cleanup)
1342
1343
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
1344
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1345
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1346
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1347
1922
1349
1924
class MandosDBusService(dbus.service.Object):
1350
1925
"""A D-Bus proxy object"""
1351
1926
def __init__(self):
1352
dbus.service.Object.__init__(self, bus, "/")
1927
dbus.service.Object.__init__(self, bus, u"/")
1353
1928
_interface = u"se.bsnet.fukt.Mandos"
1354
1929
1355
@dbus.service.signal(_interface, signature="oa{sv}")
1356
def ClientAdded(self, objpath, properties):
1357
"D-Bus signal"
1358
pass
1359
1360
@dbus.service.signal(_interface, signature="s")
1361
def ClientNotFound(self, fingerprint):
1362
"D-Bus signal"
1363
pass
1364
1365
@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")
1366
1941
def ClientRemoved(self, objpath, name):
1367
1942
"D-Bus signal"
1368
1943
pass
1369
1944
1370
@dbus.service.method(_interface, out_signature="ao")
1945
@dbus.service.method(_interface, out_signature=u"ao")
1371
1946
def GetAllClients(self):
1372
1947
"D-Bus method"
1373
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)
1374
1950
1375
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1951
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
1376
1953
def GetAllClientsWithProperties(self):
1377
1954
"D-Bus method"
1378
1955
return dbus.Dictionary(
1379
((c.dbus_object_path, c.GetAllProperties())
1380
for c in clients),
1381
signature="oa{sv}")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1382
1959
1383
@dbus.service.method(_interface, in_signature="o")
1960
@dbus.service.method(_interface, in_signature=u"o")
1384
1961
def RemoveClient(self, object_path):
1385
1962
"D-Bus method"
1386
for c in clients:
1963
for c in tcp_server.clients:
1387
1964
if c.dbus_object_path == object_path:
1388
clients.remove(c)
1965
tcp_server.clients.remove(c)
1389
1966
c.remove_from_connection()
1390
1967
# Don't signal anything except ClientRemoved
1391
c.disable(signal=False)
1968
c.disable(quiet=True)
1392
1969
# Emit D-Bus signal
1393
1970
self.ClientRemoved(object_path, c.name)
1394
1971
return
1395
raise KeyError
1972
raise KeyError(object_path)
1396
1973
1397
1974
del _interface
1398
1975
1399
1976
mandos_dbus_service = MandosDBusService()
1400
1977
1401
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:
1402
1997
if use_dbus:
1403
1998
# Emit D-Bus signal
1404
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1405
client.GetAllProperties())
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1406
2000
client.enable()
1407
2001
1408
2002
tcp_server.enable()
1422
2016
1423
2017
try:
1424
2018
# From the Avahi example code
1425
server.connect_to_signal("StateChanged", server_state_changed)
1426
2019
try:
1427
server_state_changed(server.GetState())
2020
service.activate()
1428
2021
except dbus.exceptions.DBusException, error:
1429
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
1430
2024
sys.exit(1)
1431
2025
# End of Avahi example code
1432
2026
1439
2033
main_loop.run()
1440
2034
except AvahiError, error:
1441
2035
logger.critical(u"AvahiError: %s", error)
2036
cleanup()
1442
2037
sys.exit(1)
1443
2038
except KeyboardInterrupt:
1444
2039
if debug:
1445
2040
print >> sys.stderr
1446
logger.debug("Server received KeyboardInterrupt")
1447
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()
1448
2045
1449
2046
if __name__ == '__main__':
1450
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0