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- Committer: Teddy Hogeborn
- Date: 2008-07-19 18:43:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20080719184324-iwhoa5in75xa0u2u
* mandos-clients.conf ([foo]/dn, [foo]/password, [braxen_client]/dn,
[braxen_client]/password): Removed.
([foo]/fingerprint, [braxen_client]/fingerprint): New.
([foo]/checker): New.
([foo]/secfile): New.
([braxen_client]/secret): New.
* server.py: New "--debug" option to set debug flag. Removed "cert",
"key", "ca", "crl", and "cred" variables. Added default
value for "checker" config file setting. Do not pass
credentials to IPv6_TCPServer constructor.
(debug): New global debug flag. Used by most debugging output code.
(Client.__init__): Keyword argument "dn" replaced by "fingerprint",
"password" renamed to "secret", and "passfile"
renamed to "secfile". New keyword argument
"checker". All callers changed.
(Client.dn): Removed.
(Client.fingerprint): New.
(Client.password): Renamed to "secret"; all users changed.
(Client.passfile): Renamed to "secfile"; all users changed.
(Client.timeout, Client.interval): Changed to be properties; now
automatically updates the
"_timeout_milliseconds" and
"_interval_milliseconds" values.
(Client.timeout_milliseconds): Renamed to "_timeout_milliseconds".
(Client.interval_milliseconds): Renamed to "_interval_milliseconds".
(Client.check_command): New.
(Client.start_checker): Use the new "check_command" attribute.
(peer_certificate, fingerprint): New functions.
(tcp_handler.handle): Use ClientSession with empty credentials
object instead of ServerSession. Set gnutls
priority string. Do not verify peer. Use
fingerprint instead of DN when searching for
clients. Bug fix: Loop sending data so even large
secret data strings are sent.
(IPv6_TCPServer.credentials): Removed.
(if_nametoindex): Do not import ctypes since that is now imported
globally.
[braxen_client]/password): Removed.
([foo]/fingerprint, [braxen_client]/fingerprint): New.
([foo]/checker): New.
([foo]/secfile): New.
([braxen_client]/secret): New.
* server.py: New "--debug" option to set debug flag. Removed "cert",
"key", "ca", "crl", and "cred" variables. Added default
value for "checker" config file setting. Do not pass
credentials to IPv6_TCPServer constructor.
(debug): New global debug flag. Used by most debugging output code.
(Client.__init__): Keyword argument "dn" replaced by "fingerprint",
"password" renamed to "secret", and "passfile"
renamed to "secfile". New keyword argument
"checker". All callers changed.
(Client.dn): Removed.
(Client.fingerprint): New.
(Client.password): Renamed to "secret"; all users changed.
(Client.passfile): Renamed to "secfile"; all users changed.
(Client.timeout, Client.interval): Changed to be properties; now
automatically updates the
"_timeout_milliseconds" and
"_interval_milliseconds" values.
(Client.timeout_milliseconds): Renamed to "_timeout_milliseconds".
(Client.interval_milliseconds): Renamed to "_interval_milliseconds".
(Client.check_command): New.
(Client.start_checker): Use the new "check_command" attribute.
(peer_certificate, fingerprint): New functions.
(tcp_handler.handle): Use ClientSession with empty credentials
object instead of ServerSession. Set gnutls
priority string. Do not verify peer. Use
fingerprint instead of DN when searching for
clients. Bug fix: Loop sending data so even large
secret data strings are sent.
(IPv6_TCPServer.credentials): Removed.
(if_nametoindex): Do not import ctypes since that is now imported
globally.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- plugins.d
- files renamed:
- clients.conf => mandos-clients.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
server.py
1
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
# Mandos server - give out binary blobs to connecting clients.
5
#
6
# This program is partly derived from an example program for an Avahi
7
# service publisher, downloaded from
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
12
#
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
19
# the Free Software Foundation, either version 3 of the License, or
20
# (at your option) any later version.
21
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
# GNU General Public License for more details.
26
#
27
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
2
3
from __future__ import division
4
5
import SocketServer
37
6
import socket
38
import optparse
7
import select
8
from optparse import OptionParser
39
9
import datetime
40
10
import errno
41
11
import gnutls.crypto
44
14
import gnutls.library.functions
45
15
import gnutls.library.constants
46
16
import gnutls.library.types
47
import ConfigParser as configparser
17
import ConfigParser
48
18
import sys
49
19
import re
50
20
import os
51
21
import signal
22
from sets import Set
52
23
import subprocess
53
import atexit
54
import stat
55
import logging
56
import logging.handlers
57
import pwd
58
from contextlib import closing
59
import struct
60
import fcntl
61
import functools
62
24
63
25
import dbus
64
import dbus.service
65
26
import gobject
66
27
import avahi
67
28
from dbus.mainloop.glib import DBusGMainLoop
68
29
import ctypes
69
import ctypes.util
70
71
try:
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
73
except AttributeError:
74
try:
75
from IN import SO_BINDTODEVICE
76
except ImportError:
77
SO_BINDTODEVICE = None
78
79
80
version = "1.0.8"
81
82
logger = logging.Logger(u'mandos')
83
syslogger = (logging.handlers.SysLogHandler
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
89
logger.addHandler(syslogger)
90
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
95
logger.addHandler(console)
96
97
class AvahiError(Exception):
98
def __init__(self, value, *args, **kwargs):
99
self.value = value
100
super(AvahiError, self).__init__(value, *args, **kwargs)
101
def __unicode__(self):
102
return unicode(repr(self.value))
103
104
class AvahiServiceError(AvahiError):
105
pass
106
107
class AvahiGroupError(AvahiError):
108
pass
109
110
111
class AvahiService(object):
112
"""An Avahi (Zeroconf) service.
113
114
Attributes:
115
interface: integer; avahi.IF_UNSPEC or an interface index.
116
Used to optionally bind to the specified interface.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
119
See <http://www.dns-sd.org/ServiceTypes.html>
120
port: integer; what port to announce
121
TXT: list of strings; TXT record for the service
122
domain: string; Domain to publish on, default to .local if empty.
123
host: string; Host to publish records for, default is localhost
124
max_renames: integer; maximum number of renames
125
rename_count: integer; counter so we only rename after collisions
126
a sensible number of times
127
group: D-Bus Entry Group
128
server: D-Bus Server
129
bus: dbus.SystemBus()
130
"""
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
132
servicetype = None, port = None, TXT = None,
133
domain = u"", host = u"", max_renames = 32768,
134
protocol = avahi.PROTO_UNSPEC, bus = None):
135
self.interface = interface
136
self.name = name
137
self.type = servicetype
138
self.port = port
139
self.TXT = TXT if TXT is not None else []
140
self.domain = domain
141
self.host = host
142
self.rename_count = 0
143
self.max_renames = max_renames
144
self.protocol = protocol
145
self.group = None # our entry group
146
self.server = None
147
self.bus = bus
148
def rename(self):
149
"""Derived from the Avahi example code"""
150
if self.rename_count >= self.max_renames:
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
153
self.rename_count)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
156
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
158
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
162
self.remove()
163
self.add()
164
self.rename_count += 1
165
def remove(self):
166
"""Derived from the Avahi example code"""
167
if self.group is not None:
168
self.group.Reset()
169
def add(self):
170
"""Derived from the Avahi example code"""
171
if self.group is None:
172
self.group = dbus.Interface(
173
self.bus.get_object(avahi.DBUS_NAME,
174
self.server.EntryGroupNew()),
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
179
self.name, self.type)
180
self.group.AddService(
181
self.interface,
182
self.protocol,
183
dbus.UInt32(0), # flags
184
self.name, self.type,
185
self.domain, self.host,
186
dbus.UInt16(self.port),
187
avahi.string_array_to_txt_array(self.TXT))
188
self.group.Commit()
189
def entry_group_state_changed(self, state, error):
190
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
192
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
195
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
197
self.rename()
198
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
200
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
203
def cleanup(self):
204
"""Derived from the Avahi example code"""
205
if self.group is not None:
206
self.group.Free()
207
self.group = None
208
def server_state_changed(self, state):
209
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
213
elif state == avahi.SERVER_RUNNING:
214
self.add()
215
def activate(self):
216
"""Derived from the Avahi example code"""
217
if self.server is None:
218
self.server = dbus.Interface(
219
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
221
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
224
self.server_state_changed(self.server.GetState())
30
31
# This variable is used to optionally bind to a specified interface.
32
# It is a global variable to fit in with the other variables from the
33
# Avahi server example code.
34
serviceInterface = avahi.IF_UNSPEC
35
# From the Avahi server example code:
36
serviceName = "Mandos"
37
serviceType = "_mandos._tcp" # http://www.dns-sd.org/ServiceTypes.html
38
servicePort = None # Not known at startup
39
serviceTXT = [] # TXT record for the service
40
domain = "" # Domain to publish on, default to .local
41
host = "" # Host to publish records for, default to localhost
42
group = None #our entry group
43
rename_count = 12 # Counter so we only rename after collisions a
44
# sensible number of times
45
# End of Avahi example code
225
46
226
47
227
48
class Client(object):
228
49
"""A representation of a client host served by this server.
229
230
50
Attributes:
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
51
name: string; from the config file, used in log messages
233
52
fingerprint: string (40 or 32 hexadecimal digits); used to
234
53
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
245
checker: subprocess.Popen(); a running checker process used
246
to see if the client lives.
247
'None' if no process is running.
54
secret: bytestring; sent verbatim (over TLS) to client
55
fqdn: string (FQDN); available for use by the checker command
56
created: datetime.datetime()
57
last_seen: datetime.datetime() or None if not yet seen
58
timeout: datetime.timedelta(); How long from last_seen until
59
this client is invalid
60
interval: datetime.timedelta(); How often to start a new checker
61
stop_hook: If set, called by stop() as stop_hook(self)
62
checker: subprocess.Popen(); a running checker process used
63
to see if the client lives.
64
Is None if no process is running.
248
65
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
66
stop_initiator_tag: - '' -
250
67
checker_callback_tag: - '' -
251
68
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
69
client lives. %()s expansions are done at
253
70
runtime with vars(self) as dict, so that for
254
71
instance %(name)s can be used in the command.
255
current_checker_command: string; current running checker_command
72
Private attibutes:
73
_timeout: Real variable for 'timeout'
74
_interval: Real variable for 'interval'
75
_timeout_milliseconds: Used by gobject.timeout_add()
76
_interval_milliseconds: - '' -
256
77
"""
257
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
264
265
def timeout_milliseconds(self):
266
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
268
269
def interval_milliseconds(self):
270
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
276
attribute."""
78
def _set_timeout(self, timeout):
79
"Setter function for 'timeout' attribute"
80
self._timeout = timeout
81
self._timeout_milliseconds = ((self.timeout.days
82
* 24 * 60 * 60 * 1000)
83
+ (self.timeout.seconds * 1000)
84
+ (self.timeout.microseconds
85
// 1000))
86
timeout = property(lambda self: self._timeout,
87
_set_timeout)
88
del _set_timeout
89
def _set_interval(self, interval):
90
"Setter function for 'interval' attribute"
91
self._interval = interval
92
self._interval_milliseconds = ((self.interval.days
93
* 24 * 60 * 60 * 1000)
94
+ (self.interval.seconds
95
* 1000)
96
+ (self.interval.microseconds
97
// 1000))
98
interval = property(lambda self: self._interval,
99
_set_interval)
100
del _set_interval
101
def __init__(self, name=None, options=None, stop_hook=None,
102
fingerprint=None, secret=None, secfile=None, fqdn=None,
103
timeout=None, interval=-1, checker=None):
277
104
self.name = name
278
if config is None:
279
config = {}
280
logger.debug(u"Creating client %r", self.name)
281
# Uppercase and remove spaces from fingerprint for later
282
# comparison purposes with return value from the fingerprint()
283
# function
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
294
else:
295
raise TypeError(u"No secret or secfile for client %s"
296
% self.name)
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
299
self.enabled = False
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
105
# Uppercase and remove spaces from fingerprint
106
# for later comparison purposes with return value of
107
# the fingerprint() function
108
self.fingerprint = fingerprint.upper().replace(u" ", u"")
109
if secret:
110
self.secret = secret.decode(u"base64")
111
elif secfile:
112
sf = open(secfile)
113
self.secret = sf.read()
114
sf.close()
115
else:
116
raise RuntimeError(u"No secret or secfile for client %s"
117
% self.name)
118
self.fqdn = fqdn # string
119
self.created = datetime.datetime.now()
120
self.last_seen = None
121
if timeout is None:
122
timeout = options.timeout
123
self.timeout = timeout
124
if interval == -1:
125
interval = options.interval
126
else:
127
interval = string_to_delta(interval)
128
self.interval = interval
129
self.stop_hook = stop_hook
305
130
self.checker = None
306
131
self.checker_initiator_tag = None
307
self.disable_initiator_tag = None
132
self.stop_initiator_tag = None
308
133
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
310
self.current_checker_command = None
311
self.last_connect = None
312
313
def enable(self):
314
"""Start this client's checker and timeout hooks"""
315
self.last_enabled = datetime.datetime.utcnow()
134
self.check_command = checker
135
def start(self):
136
"""Start this clients checker and timeout hooks"""
316
137
# Schedule a new checker to be started an 'interval' from now,
317
138
# and every interval from then on.
318
self.checker_initiator_tag = (gobject.timeout_add
319
(self.interval_milliseconds(),
320
self.start_checker))
139
self.checker_initiator_tag = gobject.timeout_add\
140
(self._interval_milliseconds,
141
self.start_checker)
321
142
# Also start a new checker *right now*.
322
143
self.start_checker()
323
# Schedule a disable() when 'timeout' has passed
324
self.disable_initiator_tag = (gobject.timeout_add
325
(self.timeout_milliseconds(),
326
self.disable))
327
self.enabled = True
328
329
def disable(self):
330
"""Disable this client."""
331
if not getattr(self, "enabled", False):
332
return False
333
logger.info(u"Disabling client %s", self.name)
334
if getattr(self, u"disable_initiator_tag", False):
335
gobject.source_remove(self.disable_initiator_tag)
336
self.disable_initiator_tag = None
337
if getattr(self, u"checker_initiator_tag", False):
144
# Schedule a stop() when 'timeout' has passed
145
self.stop_initiator_tag = gobject.timeout_add\
146
(self._timeout_milliseconds,
147
self.stop)
148
def stop(self):
149
"""Stop this client.
150
The possibility that this client might be restarted is left
151
open, but not currently used."""
152
if debug:
153
sys.stderr.write(u"Stopping client %s\n" % self.name)
154
self.secret = None
155
if self.stop_initiator_tag:
156
gobject.source_remove(self.stop_initiator_tag)
157
self.stop_initiator_tag = None
158
if self.checker_initiator_tag:
338
159
gobject.source_remove(self.checker_initiator_tag)
339
160
self.checker_initiator_tag = None
340
161
self.stop_checker()
341
if self.disable_hook:
342
self.disable_hook(self)
343
self.enabled = False
162
if self.stop_hook:
163
self.stop_hook(self)
344
164
# Do not run this again if called by a gobject.timeout_add
345
165
return False
346
347
166
def __del__(self):
348
self.disable_hook = None
349
self.disable()
350
351
def checker_callback(self, pid, condition, command):
167
# Some code duplication here and in stop()
168
if hasattr(self, "stop_initiator_tag") \
169
and self.stop_initiator_tag:
170
gobject.source_remove(self.stop_initiator_tag)
171
self.stop_initiator_tag = None
172
if hasattr(self, "checker_initiator_tag") \
173
and self.checker_initiator_tag:
174
gobject.source_remove(self.checker_initiator_tag)
175
self.checker_initiator_tag = None
176
self.stop_checker()
177
def checker_callback(self, pid, condition):
352
178
"""The checker has completed, so take appropriate actions."""
179
now = datetime.datetime.now()
180
if os.WIFEXITED(condition) \
181
and (os.WEXITSTATUS(condition) == 0):
182
if debug:
183
sys.stderr.write(u"Checker for %(name)s succeeded\n"
184
% vars(self))
185
self.last_seen = now
186
gobject.source_remove(self.stop_initiator_tag)
187
self.stop_initiator_tag = gobject.timeout_add\
188
(self._timeout_milliseconds,
189
self.stop)
190
elif debug:
191
if not os.WIFEXITED(condition):
192
sys.stderr.write(u"Checker for %(name)s crashed?\n"
193
% vars(self))
194
else:
195
sys.stderr.write(u"Checker for %(name)s failed\n"
196
% vars(self))
197
self.checker = None
353
198
self.checker_callback_tag = None
354
self.checker = None
355
if os.WIFEXITED(condition):
356
exitstatus = os.WEXITSTATUS(condition)
357
if exitstatus == 0:
358
logger.info(u"Checker for %(name)s succeeded",
359
vars(self))
360
self.checked_ok()
361
else:
362
logger.info(u"Checker for %(name)s failed",
363
vars(self))
364
else:
365
logger.warning(u"Checker for %(name)s crashed?",
366
vars(self))
367
368
def checked_ok(self):
369
"""Bump up the timeout for this client.
370
371
This should only be called when the client has been seen,
372
alive and well.
373
"""
374
self.last_checked_ok = datetime.datetime.utcnow()
375
gobject.source_remove(self.disable_initiator_tag)
376
self.disable_initiator_tag = (gobject.timeout_add
377
(self.timeout_milliseconds(),
378
self.disable))
379
380
199
def start_checker(self):
381
200
"""Start a new checker subprocess if one is not running.
382
383
201
If a checker already exists, leave it running and do
384
202
nothing."""
385
# The reason for not killing a running checker is that if we
386
# did that, then if a checker (for some reason) started
387
# running slowly and taking more than 'interval' time, the
388
# client would inevitably timeout, since no checker would get
389
# a chance to run to completion. If we instead leave running
390
# checkers alone, the checker would have to take more time
391
# than 'timeout' for the client to be declared invalid, which
392
# is as it should be.
393
394
# If a checker exists, make sure it is not a zombie
395
if self.checker is not None:
396
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
397
if pid:
398
logger.warning(u"Checker was a zombie")
399
gobject.source_remove(self.checker_callback_tag)
400
self.checker_callback(pid, status,
401
self.current_checker_command)
402
# Start a new checker if needed
403
203
if self.checker is None:
204
if debug:
205
sys.stderr.write(u"Starting checker for %s\n"
206
% self.name)
404
207
try:
405
# In case checker_command has exactly one % operator
406
command = self.checker_command % self.host
208
command = self.check_command % self.fqdn
407
209
except TypeError:
408
# Escape attributes for the shell
409
escaped_attrs = dict((key,
410
re.escape(unicode(str(val),
411
errors=
412
u'replace')))
210
escaped_attrs = dict((key, re.escape(str(val)))
413
211
for key, val in
414
212
vars(self).iteritems())
415
try:
416
command = self.checker_command % escaped_attrs
417
except TypeError, error:
418
logger.error(u'Could not format string "%s":'
419
u' %s', self.checker_command, error)
420
return True # Try again later
421
self.current_checker_command = command
213
command = self.check_command % escaped_attrs
422
214
try:
423
logger.info(u"Starting checker %r for %s",
424
command, self.name)
425
# We don't need to redirect stdout and stderr, since
426
# in normal mode, that is already done by daemon(),
427
# and in debug mode we don't want to. (Stdin is
428
# always replaced by /dev/null.)
429
self.checker = subprocess.Popen(command,
430
close_fds=True,
431
shell=True, cwd=u"/")
432
self.checker_callback_tag = (gobject.child_watch_add
433
(self.checker.pid,
434
self.checker_callback,
435
data=command))
436
# The checker may have completed before the gobject
437
# watch was added. Check for this.
438
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
439
if pid:
440
gobject.source_remove(self.checker_callback_tag)
441
self.checker_callback(pid, status, command)
442
except OSError, error:
443
logger.error(u"Failed to start subprocess: %s",
444
error)
215
self.checker = subprocess.\
216
Popen(command,
217
stdout=subprocess.PIPE,
218
close_fds=True, shell=True,
219
cwd="/")
220
self.checker_callback_tag = gobject.\
221
child_watch_add(self.checker.pid,
222
self.\
223
checker_callback)
224
except subprocess.OSError, error:
225
sys.stderr.write(u"Failed to start subprocess: %s\n"
226
% error)
445
227
# Re-run this periodically if run by gobject.timeout_add
446
228
return True
447
448
229
def stop_checker(self):
449
230
"""Force the checker process, if any, to stop."""
450
if self.checker_callback_tag:
451
gobject.source_remove(self.checker_callback_tag)
452
self.checker_callback_tag = None
453
if getattr(self, u"checker", None) is None:
231
if not hasattr(self, "checker") or self.checker is None:
454
232
return
455
logger.debug(u"Stopping checker for %(name)s", vars(self))
456
try:
457
os.kill(self.checker.pid, signal.SIGTERM)
458
#os.sleep(0.5)
459
#if self.checker.poll() is None:
460
# os.kill(self.checker.pid, signal.SIGKILL)
461
except OSError, error:
462
if error.errno != errno.ESRCH: # No such process
463
raise
233
gobject.source_remove(self.checker_callback_tag)
234
self.checker_callback_tag = None
235
os.kill(self.checker.pid, signal.SIGTERM)
236
if self.checker.poll() is None:
237
os.kill(self.checker.pid, signal.SIGKILL)
464
238
self.checker = None
465
466
def still_valid(self):
239
def still_valid(self, now=None):
467
240
"""Has the timeout not yet passed for this client?"""
468
if not getattr(self, u"enabled", False):
469
return False
470
now = datetime.datetime.utcnow()
471
if self.last_checked_ok is None:
241
if now is None:
242
now = datetime.datetime.now()
243
if self.last_seen is None:
472
244
return now < (self.created + self.timeout)
473
245
else:
474
return now < (self.last_checked_ok + self.timeout)
475
476
477
class ClientDBus(Client, dbus.service.Object):
478
"""A Client class using D-Bus
479
480
Attributes:
481
dbus_object_path: dbus.ObjectPath
482
bus: dbus.SystemBus()
483
"""
484
# dbus.service.Object doesn't use super(), so we can't either.
485
486
def __init__(self, bus = None, *args, **kwargs):
487
self.bus = bus
488
Client.__init__(self, *args, **kwargs)
489
# Only now, when this client is initialized, can it show up on
490
# the D-Bus
491
self.dbus_object_path = (dbus.ObjectPath
492
(u"/clients/"
493
+ self.name.replace(u".", u"_")))
494
dbus.service.Object.__init__(self, self.bus,
495
self.dbus_object_path)
496
497
@staticmethod
498
def _datetime_to_dbus(dt, variant_level=0):
499
"""Convert a UTC datetime.datetime() to a D-Bus type."""
500
return dbus.String(dt.isoformat(),
501
variant_level=variant_level)
502
503
def enable(self):
504
oldstate = getattr(self, u"enabled", False)
505
r = Client.enable(self)
506
if oldstate != self.enabled:
507
# Emit D-Bus signals
508
self.PropertyChanged(dbus.String(u"enabled"),
509
dbus.Boolean(True, variant_level=1))
510
self.PropertyChanged(
511
dbus.String(u"last_enabled"),
512
self._datetime_to_dbus(self.last_enabled,
513
variant_level=1))
514
return r
515
516
def disable(self, signal = True):
517
oldstate = getattr(self, u"enabled", False)
518
r = Client.disable(self)
519
if signal and oldstate != self.enabled:
520
# Emit D-Bus signal
521
self.PropertyChanged(dbus.String(u"enabled"),
522
dbus.Boolean(False, variant_level=1))
523
return r
524
525
def __del__(self, *args, **kwargs):
526
try:
527
self.remove_from_connection()
528
except LookupError:
529
pass
530
if hasattr(dbus.service.Object, u"__del__"):
531
dbus.service.Object.__del__(self, *args, **kwargs)
532
Client.__del__(self, *args, **kwargs)
533
534
def checker_callback(self, pid, condition, command,
535
*args, **kwargs):
536
self.checker_callback_tag = None
537
self.checker = None
538
# Emit D-Bus signal
539
self.PropertyChanged(dbus.String(u"checker_running"),
540
dbus.Boolean(False, variant_level=1))
541
if os.WIFEXITED(condition):
542
exitstatus = os.WEXITSTATUS(condition)
543
# Emit D-Bus signal
544
self.CheckerCompleted(dbus.Int16(exitstatus),
545
dbus.Int64(condition),
546
dbus.String(command))
547
else:
548
# Emit D-Bus signal
549
self.CheckerCompleted(dbus.Int16(-1),
550
dbus.Int64(condition),
551
dbus.String(command))
552
553
return Client.checker_callback(self, pid, condition, command,
554
*args, **kwargs)
555
556
def checked_ok(self, *args, **kwargs):
557
r = Client.checked_ok(self, *args, **kwargs)
558
# Emit D-Bus signal
559
self.PropertyChanged(
560
dbus.String(u"last_checked_ok"),
561
(self._datetime_to_dbus(self.last_checked_ok,
562
variant_level=1)))
563
return r
564
565
def start_checker(self, *args, **kwargs):
566
old_checker = self.checker
567
if self.checker is not None:
568
old_checker_pid = self.checker.pid
569
else:
570
old_checker_pid = None
571
r = Client.start_checker(self, *args, **kwargs)
572
# Only if new checker process was started
573
if (self.checker is not None
574
and old_checker_pid != self.checker.pid):
575
# Emit D-Bus signal
576
self.CheckerStarted(self.current_checker_command)
577
self.PropertyChanged(
578
dbus.String(u"checker_running"),
579
dbus.Boolean(True, variant_level=1))
580
return r
581
582
def stop_checker(self, *args, **kwargs):
583
old_checker = getattr(self, u"checker", None)
584
r = Client.stop_checker(self, *args, **kwargs)
585
if (old_checker is not None
586
and getattr(self, u"checker", None) is None):
587
self.PropertyChanged(dbus.String(u"checker_running"),
588
dbus.Boolean(False, variant_level=1))
589
return r
590
591
## D-Bus methods & signals
592
_interface = u"se.bsnet.fukt.Mandos.Client"
593
594
# CheckedOK - method
595
@dbus.service.method(_interface)
596
def CheckedOK(self):
597
return self.checked_ok()
598
599
# CheckerCompleted - signal
600
@dbus.service.signal(_interface, signature=u"nxs")
601
def CheckerCompleted(self, exitcode, waitstatus, command):
602
"D-Bus signal"
603
pass
604
605
# CheckerStarted - signal
606
@dbus.service.signal(_interface, signature=u"s")
607
def CheckerStarted(self, command):
608
"D-Bus signal"
609
pass
610
611
# GetAllProperties - method
612
@dbus.service.method(_interface, out_signature=u"a{sv}")
613
def GetAllProperties(self):
614
"D-Bus method"
615
return dbus.Dictionary({
616
dbus.String(u"name"):
617
dbus.String(self.name, variant_level=1),
618
dbus.String(u"fingerprint"):
619
dbus.String(self.fingerprint, variant_level=1),
620
dbus.String(u"host"):
621
dbus.String(self.host, variant_level=1),
622
dbus.String(u"created"):
623
self._datetime_to_dbus(self.created,
624
variant_level=1),
625
dbus.String(u"last_enabled"):
626
(self._datetime_to_dbus(self.last_enabled,
627
variant_level=1)
628
if self.last_enabled is not None
629
else dbus.Boolean(False, variant_level=1)),
630
dbus.String(u"enabled"):
631
dbus.Boolean(self.enabled, variant_level=1),
632
dbus.String(u"last_checked_ok"):
633
(self._datetime_to_dbus(self.last_checked_ok,
634
variant_level=1)
635
if self.last_checked_ok is not None
636
else dbus.Boolean (False, variant_level=1)),
637
dbus.String(u"timeout"):
638
dbus.UInt64(self.timeout_milliseconds(),
639
variant_level=1),
640
dbus.String(u"interval"):
641
dbus.UInt64(self.interval_milliseconds(),
642
variant_level=1),
643
dbus.String(u"checker"):
644
dbus.String(self.checker_command,
645
variant_level=1),
646
dbus.String(u"checker_running"):
647
dbus.Boolean(self.checker is not None,
648
variant_level=1),
649
dbus.String(u"object_path"):
650
dbus.ObjectPath(self.dbus_object_path,
651
variant_level=1)
652
}, signature=u"sv")
653
654
# IsStillValid - method
655
@dbus.service.method(_interface, out_signature=u"b")
656
def IsStillValid(self):
657
return self.still_valid()
658
659
# PropertyChanged - signal
660
@dbus.service.signal(_interface, signature=u"sv")
661
def PropertyChanged(self, property, value):
662
"D-Bus signal"
663
pass
664
665
# ReceivedSecret - signal
666
@dbus.service.signal(_interface)
667
def ReceivedSecret(self):
668
"D-Bus signal"
669
pass
670
671
# Rejected - signal
672
@dbus.service.signal(_interface)
673
def Rejected(self):
674
"D-Bus signal"
675
pass
676
677
# SetChecker - method
678
@dbus.service.method(_interface, in_signature=u"s")
679
def SetChecker(self, checker):
680
"D-Bus setter method"
681
self.checker_command = checker
682
# Emit D-Bus signal
683
self.PropertyChanged(dbus.String(u"checker"),
684
dbus.String(self.checker_command,
685
variant_level=1))
686
687
# SetHost - method
688
@dbus.service.method(_interface, in_signature=u"s")
689
def SetHost(self, host):
690
"D-Bus setter method"
691
self.host = host
692
# Emit D-Bus signal
693
self.PropertyChanged(dbus.String(u"host"),
694
dbus.String(self.host, variant_level=1))
695
696
# SetInterval - method
697
@dbus.service.method(_interface, in_signature=u"t")
698
def SetInterval(self, milliseconds):
699
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
700
# Emit D-Bus signal
701
self.PropertyChanged(dbus.String(u"interval"),
702
(dbus.UInt64(self.interval_milliseconds(),
703
variant_level=1)))
704
705
# SetSecret - method
706
@dbus.service.method(_interface, in_signature=u"ay",
707
byte_arrays=True)
708
def SetSecret(self, secret):
709
"D-Bus setter method"
710
self.secret = str(secret)
711
712
# SetTimeout - method
713
@dbus.service.method(_interface, in_signature=u"t")
714
def SetTimeout(self, milliseconds):
715
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
716
# Emit D-Bus signal
717
self.PropertyChanged(dbus.String(u"timeout"),
718
(dbus.UInt64(self.timeout_milliseconds(),
719
variant_level=1)))
720
721
# Enable - method
722
@dbus.service.method(_interface)
723
def Enable(self):
724
"D-Bus method"
725
self.enable()
726
727
# StartChecker - method
728
@dbus.service.method(_interface)
729
def StartChecker(self):
730
"D-Bus method"
731
self.start_checker()
732
733
# Disable - method
734
@dbus.service.method(_interface)
735
def Disable(self):
736
"D-Bus method"
737
self.disable()
738
739
# StopChecker - method
740
@dbus.service.method(_interface)
741
def StopChecker(self):
742
self.stop_checker()
743
744
del _interface
745
746
747
class ClientHandler(socketserver.BaseRequestHandler, object):
748
"""A class to handle client connections.
749
750
Instantiated once for each connection to handle it.
246
return now < (self.last_seen + self.timeout)
247
248
249
def peer_certificate(session):
250
# If not an OpenPGP certificate...
251
if gnutls.library.functions.gnutls_certificate_type_get\
252
(session._c_object) \
253
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
254
# ...do the normal thing
255
return session.peer_certificate
256
list_size = ctypes.c_uint()
257
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
258
(session._c_object, ctypes.byref(list_size))
259
if list_size.value == 0:
260
return None
261
cert = cert_list[0]
262
return ctypes.string_at(cert.data, cert.size)
263
264
265
def fingerprint(openpgp):
266
# New empty GnuTLS certificate
267
crt = gnutls.library.types.gnutls_openpgp_crt_t()
268
gnutls.library.functions.gnutls_openpgp_crt_init\
269
(ctypes.byref(crt))
270
# New GnuTLS "datum" with the OpenPGP public key
271
datum = gnutls.library.types.gnutls_datum_t\
272
(ctypes.cast(ctypes.c_char_p(openpgp),
273
ctypes.POINTER(ctypes.c_ubyte)),
274
ctypes.c_uint(len(openpgp)))
275
# Import the OpenPGP public key into the certificate
276
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
277
(crt,
278
ctypes.byref(datum),
279
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
280
# New buffer for the fingerprint
281
buffer = ctypes.create_string_buffer(20)
282
buffer_length = ctypes.c_size_t()
283
# Get the fingerprint from the certificate into the buffer
284
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
285
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
286
# Deinit the certificate
287
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
288
# Convert the buffer to a Python bytestring
289
fpr = ctypes.string_at(buffer, buffer_length.value)
290
# Convert the bytestring to hexadecimal notation
291
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
292
return hex_fpr
293
294
295
class tcp_handler(SocketServer.BaseRequestHandler, object):
296
"""A TCP request handler class.
297
Instantiated by IPv6_TCPServer for each request to handle it.
751
298
Note: This will run in its own forked process."""
752
299
753
300
def handle(self):
754
logger.info(u"TCP connection from: %s",
755
unicode(self.client_address))
756
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
757
# Open IPC pipe to parent process
758
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
759
session = (gnutls.connection
760
.ClientSession(self.request,
761
gnutls.connection
762
.X509Credentials()))
763
764
line = self.request.makefile().readline()
765
logger.debug(u"Protocol version: %r", line)
766
try:
767
if int(line.strip().split()[0]) > 1:
768
raise RuntimeError
769
except (ValueError, IndexError, RuntimeError), error:
770
logger.error(u"Unknown protocol version: %s", error)
771
return
772
773
# Note: gnutls.connection.X509Credentials is really a
774
# generic GnuTLS certificate credentials object so long as
775
# no X.509 keys are added to it. Therefore, we can use it
776
# here despite using OpenPGP certificates.
777
778
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
779
# u"+AES-256-CBC", u"+SHA1",
780
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
781
# u"+DHE-DSS"))
782
# Use a fallback default, since this MUST be set.
783
priority = self.server.gnutls_priority
784
if priority is None:
785
priority = u"NORMAL"
786
(gnutls.library.functions
787
.gnutls_priority_set_direct(session._c_object,
788
priority, None))
789
790
try:
791
session.handshake()
792
except gnutls.errors.GNUTLSError, error:
793
logger.warning(u"Handshake failed: %s", error)
794
# Do not run session.bye() here: the session is not
795
# established. Just abandon the request.
796
return
797
logger.debug(u"Handshake succeeded")
798
try:
799
fpr = self.fingerprint(self.peer_certificate(session))
800
except (TypeError, gnutls.errors.GNUTLSError), error:
801
logger.warning(u"Bad certificate: %s", error)
802
session.bye()
803
return
804
logger.debug(u"Fingerprint: %s", fpr)
805
806
for c in self.server.clients:
807
if c.fingerprint == fpr:
808
client = c
809
break
810
else:
811
ipc.write(u"NOTFOUND %s\n" % fpr)
812
session.bye()
813
return
814
# Have to check if client.still_valid(), since it is
815
# possible that the client timed out while establishing
816
# the GnuTLS session.
817
if not client.still_valid():
818
ipc.write(u"INVALID %s\n" % client.name)
819
session.bye()
820
return
821
ipc.write(u"SENDING %s\n" % client.name)
822
sent_size = 0
823
while sent_size < len(client.secret):
824
sent = session.send(client.secret[sent_size:])
825
logger.debug(u"Sent: %d, remaining: %d",
826
sent, len(client.secret)
827
- (sent_size + sent))
828
sent_size += sent
829
session.bye()
830
831
@staticmethod
832
def peer_certificate(session):
833
"Return the peer's OpenPGP certificate as a bytestring"
834
# If not an OpenPGP certificate...
835
if (gnutls.library.functions
836
.gnutls_certificate_type_get(session._c_object)
837
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
838
# ...do the normal thing
839
return session.peer_certificate
840
list_size = ctypes.c_uint(1)
841
cert_list = (gnutls.library.functions
842
.gnutls_certificate_get_peers
843
(session._c_object, ctypes.byref(list_size)))
844
if not bool(cert_list) and list_size.value != 0:
845
raise gnutls.errors.GNUTLSError(u"error getting peer"
846
u" certificate")
847
if list_size.value == 0:
848
return None
849
cert = cert_list[0]
850
return ctypes.string_at(cert.data, cert.size)
851
852
@staticmethod
853
def fingerprint(openpgp):
854
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
855
# New GnuTLS "datum" with the OpenPGP public key
856
datum = (gnutls.library.types
857
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
858
ctypes.POINTER
859
(ctypes.c_ubyte)),
860
ctypes.c_uint(len(openpgp))))
861
# New empty GnuTLS certificate
862
crt = gnutls.library.types.gnutls_openpgp_crt_t()
863
(gnutls.library.functions
864
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
865
# Import the OpenPGP public key into the certificate
866
(gnutls.library.functions
867
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
868
gnutls.library.constants
869
.GNUTLS_OPENPGP_FMT_RAW))
870
# Verify the self signature in the key
871
crtverify = ctypes.c_uint()
872
(gnutls.library.functions
873
.gnutls_openpgp_crt_verify_self(crt, 0,
874
ctypes.byref(crtverify)))
875
if crtverify.value != 0:
876
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
877
raise (gnutls.errors.CertificateSecurityError
878
(u"Verify failed"))
879
# New buffer for the fingerprint
880
buf = ctypes.create_string_buffer(20)
881
buf_len = ctypes.c_size_t()
882
# Get the fingerprint from the certificate into the buffer
883
(gnutls.library.functions
884
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
885
ctypes.byref(buf_len)))
886
# Deinit the certificate
887
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
888
# Convert the buffer to a Python bytestring
889
fpr = ctypes.string_at(buf, buf_len.value)
890
# Convert the bytestring to hexadecimal notation
891
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
892
return hex_fpr
893
894
895
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
896
"""Like socketserver.ForkingMixIn, but also pass a pipe.
897
898
Assumes a gobject.MainLoop event loop.
899
"""
900
def process_request(self, request, client_address):
901
"""Overrides and wraps the original process_request().
902
903
This function creates a new pipe in self.pipe
904
"""
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
907
self).process_request(request, client_address)
908
os.close(self.pipe[1]) # close write end
909
# Call "handle_ipc" for both data and EOF events
910
gobject.io_add_watch(self.pipe[0],
911
gobject.IO_IN | gobject.IO_HUP,
912
self.handle_ipc)
913
def handle_ipc(self, source, condition):
914
"""Dummy function; override as necessary"""
915
os.close(source)
916
return False
917
918
919
class IPv6_TCPServer(ForkingMixInWithPipe,
920
socketserver.TCPServer, object):
921
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
922
301
if debug:
302
sys.stderr.write(u"TCP request came\n")
303
sys.stderr.write(u"Request: %s\n" % self.request)
304
sys.stderr.write(u"Client Address: %s\n"
305
% unicode(self.client_address))
306
sys.stderr.write(u"Server: %s\n" % self.server)
307
session = gnutls.connection.ClientSession(self.request,
308
gnutls.connection.\
309
X509Credentials())
310
311
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
312
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
313
# "+DHE-DSS"))
314
priority = "SECURE256"
315
316
gnutls.library.functions.gnutls_priority_set_direct\
317
(session._c_object, priority, None);
318
319
try:
320
session.handshake()
321
except gnutls.errors.GNUTLSError, error:
322
if debug:
323
sys.stderr.write(u"Handshake failed: %s\n" % error)
324
# Do not run session.bye() here: the session is not
325
# established. Just abandon the request.
326
return
327
try:
328
fpr = fingerprint(peer_certificate(session))
329
except (TypeError, gnutls.errors.GNUTLSError), error:
330
if debug:
331
sys.stderr.write(u"Bad certificate: %s\n" % error)
332
session.bye()
333
return
334
if debug:
335
sys.stderr.write(u"Fingerprint: %s\n" % fpr)
336
client = None
337
for c in clients:
338
if c.fingerprint == fpr:
339
client = c
340
break
341
# Have to check if client.still_valid(), since it is possible
342
# that the client timed out while establishing the GnuTLS
343
# session.
344
if (not client) or (not client.still_valid()):
345
if debug:
346
if client:
347
sys.stderr.write(u"Client %(name)s is invalid\n"
348
% vars(client))
349
else:
350
sys.stderr.write(u"Client not found for "
351
u"fingerprint: %s\n" % fpr)
352
session.bye()
353
return
354
sent_size = 0
355
while sent_size < len(client.secret):
356
sent = session.send(client.secret[sent_size:])
357
if debug:
358
sys.stderr.write(u"Sent: %d, remaining: %d\n"
359
% (sent, len(client.secret)
360
- (sent_size + sent)))
361
sent_size += sent
362
session.bye()
363
364
365
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
366
"""IPv6 TCP server. Accepts 'None' as address and/or port.
923
367
Attributes:
924
enabled: Boolean; whether this server is activated yet
925
interface: None or a network interface name (string)
926
use_ipv6: Boolean; to use IPv6 or not
927
----
928
clients: set of Client objects
929
gnutls_priority GnuTLS priority string
930
use_dbus: Boolean; to emit D-Bus signals or not
368
options: Command line options
369
clients: Set() of Client objects
931
370
"""
932
def __init__(self, server_address, RequestHandlerClass,
933
interface=None, use_ipv6=True):
934
self.interface = interface
935
if use_ipv6:
936
self.address_family = socket.AF_INET6
937
socketserver.TCPServer.__init__(self, server_address,
938
RequestHandlerClass)
371
address_family = socket.AF_INET6
372
def __init__(self, *args, **kwargs):
373
if "options" in kwargs:
374
self.options = kwargs["options"]
375
del kwargs["options"]
376
if "clients" in kwargs:
377
self.clients = kwargs["clients"]
378
del kwargs["clients"]
379
return super(type(self), self).__init__(*args, **kwargs)
939
380
def server_bind(self):
940
381
"""This overrides the normal server_bind() function
941
382
to bind to an interface if one was specified, and also NOT to
942
383
bind to an address or port if they were not specified."""
943
if self.interface is not None:
944
if SO_BINDTODEVICE is None:
945
logger.error(u"SO_BINDTODEVICE does not exist;"
946
u" cannot bind to interface %s",
947
self.interface)
948
else:
949
try:
950
self.socket.setsockopt(socket.SOL_SOCKET,
951
SO_BINDTODEVICE,
952
str(self.interface
953
+ u'\0'))
954
except socket.error, error:
955
if error[0] == errno.EPERM:
956
logger.error(u"No permission to"
957
u" bind to interface %s",
958
self.interface)
959
elif error[0] == errno.ENOPROTOOPT:
960
logger.error(u"SO_BINDTODEVICE not available;"
961
u" cannot bind to interface %s",
962
self.interface)
963
else:
964
raise
384
if self.options.interface:
385
if not hasattr(socket, "SO_BINDTODEVICE"):
386
# From /usr/include/asm-i486/socket.h
387
socket.SO_BINDTODEVICE = 25
388
try:
389
self.socket.setsockopt(socket.SOL_SOCKET,
390
socket.SO_BINDTODEVICE,
391
self.options.interface)
392
except socket.error, error:
393
if error[0] == errno.EPERM:
394
sys.stderr.write(u"Warning: No permission to" \
395
u" bind to interface %s\n"
396
% self.options.interface)
397
else:
398
raise error
965
399
# Only bind(2) the socket if we really need to.
966
400
if self.server_address[0] or self.server_address[1]:
967
401
if not self.server_address[0]:
968
if self.address_family == socket.AF_INET6:
969
any_address = u"::" # in6addr_any
970
else:
971
any_address = socket.INADDR_ANY
972
self.server_address = (any_address,
402
in6addr_any = "::"
403
self.server_address = (in6addr_any,
973
404
self.server_address[1])
974
elif not self.server_address[1]:
405
elif self.server_address[1] is None:
975
406
self.server_address = (self.server_address[0],
976
407
0)
977
# if self.interface:
978
# self.server_address = (self.server_address[0],
979
# 0, # port
980
# 0, # flowinfo
981
# if_nametoindex
982
# (self.interface))
983
return socketserver.TCPServer.server_bind(self)
984
985
986
class MandosServer(IPv6_TCPServer):
987
"""Mandos server.
988
989
Attributes:
990
clients: set of Client objects
991
gnutls_priority GnuTLS priority string
992
use_dbus: Boolean; to emit D-Bus signals or not
993
"""
994
def __init__(self, server_address, RequestHandlerClass,
995
interface=None, use_ipv6=True, clients=None,
996
gnutls_priority=None, use_dbus=True):
997
self.enabled = False
998
self.clients = clients
999
self.use_dbus = use_dbus
1000
self.gnutls_priority = gnutls_priority
1001
IPv6_TCPServer.__init__(self, server_address,
1002
RequestHandlerClass,
1003
interface = interface,
1004
use_ipv6 = use_ipv6)
1005
def server_activate(self):
1006
if self.enabled:
1007
return socketserver.TCPServer.server_activate(self)
1008
def enable(self):
1009
self.enabled = True
1010
def handle_ipc(self, source, condition, file_objects={}):
1011
condition_names = {
1012
gobject.IO_IN: u"IN", # There is data to read.
1013
gobject.IO_OUT: u"OUT", # Data can be written (without
1014
# blocking).
1015
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1016
gobject.IO_ERR: u"ERR", # Error condition.
1017
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1018
# broken, usually for pipes and
1019
# sockets).
1020
}
1021
conditions_string = ' | '.join(name
1022
for cond, name in
1023
condition_names.iteritems()
1024
if cond & condition)
1025
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1026
conditions_string)
1027
1028
# Turn the pipe file descriptor into a Python file object
1029
if source not in file_objects:
1030
file_objects[source] = os.fdopen(source, u"r", 1)
1031
1032
# Read a line from the file object
1033
cmdline = file_objects[source].readline()
1034
if not cmdline: # Empty line means end of file
1035
# close the IPC pipe
1036
file_objects[source].close()
1037
del file_objects[source]
1038
1039
# Stop calling this function
1040
return False
1041
1042
logger.debug(u"IPC command: %r", cmdline)
1043
1044
# Parse and act on command
1045
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1046
1047
if cmd == u"NOTFOUND":
1048
logger.warning(u"Client not found for fingerprint: %s",
1049
args)
1050
if self.use_dbus:
1051
# Emit D-Bus signal
1052
mandos_dbus_service.ClientNotFound(args)
1053
elif cmd == u"INVALID":
1054
for client in self.clients:
1055
if client.name == args:
1056
logger.warning(u"Client %s is invalid", args)
1057
if self.use_dbus:
1058
# Emit D-Bus signal
1059
client.Rejected()
1060
break
1061
else:
1062
logger.error(u"Unknown client %s is invalid", args)
1063
elif cmd == u"SENDING":
1064
for client in self.clients:
1065
if client.name == args:
1066
logger.info(u"Sending secret to %s", client.name)
1067
client.checked_ok()
1068
if self.use_dbus:
1069
# Emit D-Bus signal
1070
client.ReceivedSecret()
1071
break
1072
else:
1073
logger.error(u"Sending secret to unknown client %s",
1074
args)
1075
else:
1076
logger.error(u"Unknown IPC command: %r", cmdline)
1077
1078
# Keep calling this function
1079
return True
408
return super(type(self), self).server_bind()
1080
409
1081
410
1082
411
def string_to_delta(interval):
1083
412
"""Parse a string and return a datetime.timedelta
1084
1085
>>> string_to_delta(u'7d')
413
414
>>> string_to_delta('7d')
1086
415
datetime.timedelta(7)
1087
>>> string_to_delta(u'60s')
416
>>> string_to_delta('60s')
1088
417
datetime.timedelta(0, 60)
1089
>>> string_to_delta(u'60m')
418
>>> string_to_delta('60m')
1090
419
datetime.timedelta(0, 3600)
1091
>>> string_to_delta(u'24h')
420
>>> string_to_delta('24h')
1092
421
datetime.timedelta(1)
1093
422
>>> string_to_delta(u'1w')
1094
423
datetime.timedelta(7)
1095
>>> string_to_delta(u'5m 30s')
1096
datetime.timedelta(0, 330)
1097
424
"""
1098
timevalue = datetime.timedelta(0)
1099
for s in interval.split():
1100
try:
1101
suffix = unicode(s[-1])
1102
value = int(s[:-1])
1103
if suffix == u"d":
1104
delta = datetime.timedelta(value)
1105
elif suffix == u"s":
1106
delta = datetime.timedelta(0, value)
1107
elif suffix == u"m":
1108
delta = datetime.timedelta(0, 0, 0, 0, value)
1109
elif suffix == u"h":
1110
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1111
elif suffix == u"w":
1112
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1113
else:
1114
raise ValueError
1115
except (ValueError, IndexError):
425
try:
426
suffix=unicode(interval[-1])
427
value=int(interval[:-1])
428
if suffix == u"d":
429
delta = datetime.timedelta(value)
430
elif suffix == u"s":
431
delta = datetime.timedelta(0, value)
432
elif suffix == u"m":
433
delta = datetime.timedelta(0, 0, 0, 0, value)
434
elif suffix == u"h":
435
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
436
elif suffix == u"w":
437
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
438
else:
1116
439
raise ValueError
1117
timevalue += delta
1118
return timevalue
440
except (ValueError, IndexError):
441
raise ValueError
442
return delta
443
444
445
def add_service():
446
"""From the Avahi server example code"""
447
global group, serviceName, serviceType, servicePort, serviceTXT, \
448
domain, host
449
if group is None:
450
group = dbus.Interface(
451
bus.get_object( avahi.DBUS_NAME,
452
server.EntryGroupNew()),
453
avahi.DBUS_INTERFACE_ENTRY_GROUP)
454
group.connect_to_signal('StateChanged',
455
entry_group_state_changed)
456
if debug:
457
sys.stderr.write(u"Adding service '%s' of type '%s' ...\n"
458
% (serviceName, serviceType))
459
460
group.AddService(
461
serviceInterface, # interface
462
avahi.PROTO_INET6, # protocol
463
dbus.UInt32(0), # flags
464
serviceName, serviceType,
465
domain, host,
466
dbus.UInt16(servicePort),
467
avahi.string_array_to_txt_array(serviceTXT))
468
group.Commit()
469
470
471
def remove_service():
472
"""From the Avahi server example code"""
473
global group
474
475
if not group is None:
476
group.Reset()
477
478
479
def server_state_changed(state):
480
"""From the Avahi server example code"""
481
if state == avahi.SERVER_COLLISION:
482
sys.stderr.write(u"WARNING: Server name collision\n")
483
remove_service()
484
elif state == avahi.SERVER_RUNNING:
485
add_service()
486
487
488
def entry_group_state_changed(state, error):
489
"""From the Avahi server example code"""
490
global serviceName, server, rename_count
491
492
if debug:
493
sys.stderr.write(u"state change: %i\n" % state)
494
495
if state == avahi.ENTRY_GROUP_ESTABLISHED:
496
if debug:
497
sys.stderr.write(u"Service established.\n")
498
elif state == avahi.ENTRY_GROUP_COLLISION:
499
500
rename_count = rename_count - 1
501
if rename_count > 0:
502
name = server.GetAlternativeServiceName(name)
503
sys.stderr.write(u"WARNING: Service name collision, "
504
u"changing name to '%s' ...\n" % name)
505
remove_service()
506
add_service()
507
508
else:
509
sys.stderr.write(u"ERROR: No suitable service name found "
510
u"after %i retries, exiting.\n"
511
% n_rename)
512
main_loop.quit()
513
elif state == avahi.ENTRY_GROUP_FAILURE:
514
sys.stderr.write(u"Error in group state changed %s\n"
515
% unicode(error))
516
main_loop.quit()
517
return
1119
518
1120
519
1121
520
def if_nametoindex(interface):
1122
"""Call the C function if_nametoindex(), or equivalent
1123
1124
Note: This function cannot accept a unicode string."""
1125
global if_nametoindex
521
"""Call the C function if_nametoindex()"""
1126
522
try:
1127
if_nametoindex = (ctypes.cdll.LoadLibrary
1128
(ctypes.util.find_library(u"c"))
1129
.if_nametoindex)
523
libc = ctypes.cdll.LoadLibrary("libc.so.6")
524
return libc.if_nametoindex(interface)
1130
525
except (OSError, AttributeError):
1131
logger.warning(u"Doing if_nametoindex the hard way")
1132
def if_nametoindex(interface):
1133
"Get an interface index the hard way, i.e. using fcntl()"
1134
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1135
with closing(socket.socket()) as s:
1136
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1137
struct.pack(str(u"16s16x"),
1138
interface))
1139
interface_index = struct.unpack(str(u"I"),
1140
ifreq[16:20])[0]
1141
return interface_index
1142
return if_nametoindex(interface)
1143
1144
1145
def daemon(nochdir = False, noclose = False):
1146
"""See daemon(3). Standard BSD Unix function.
1147
1148
This should really exist as os.daemon, but it doesn't (yet)."""
1149
if os.fork():
1150
sys.exit()
1151
os.setsid()
1152
if not nochdir:
1153
os.chdir(u"/")
1154
if os.fork():
1155
sys.exit()
1156
if not noclose:
1157
# Close all standard open file descriptors
1158
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1159
if not stat.S_ISCHR(os.fstat(null).st_mode):
1160
raise OSError(errno.ENODEV,
1161
u"/dev/null not a character device")
1162
os.dup2(null, sys.stdin.fileno())
1163
os.dup2(null, sys.stdout.fileno())
1164
os.dup2(null, sys.stderr.fileno())
1165
if null > 2:
1166
os.close(null)
1167
1168
1169
def main():
1170
1171
######################################################################
1172
# Parsing of options, both command line and config file
1173
1174
parser = optparse.OptionParser(version = "%%prog %s" % version)
1175
parser.add_option("-i", u"--interface", type=u"string",
1176
metavar="IF", help=u"Bind to interface IF")
1177
parser.add_option("-a", u"--address", type=u"string",
1178
help=u"Address to listen for requests on")
1179
parser.add_option("-p", u"--port", type=u"int",
1180
help=u"Port number to receive requests on")
1181
parser.add_option("--check", action=u"store_true",
1182
help=u"Run self-test")
1183
parser.add_option("--debug", action=u"store_true",
1184
help=u"Debug mode; run in foreground and log to"
1185
u" terminal")
1186
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1187
u" priority string (see GnuTLS documentation)")
1188
parser.add_option("--servicename", type=u"string",
1189
metavar=u"NAME", help=u"Zeroconf service name")
1190
parser.add_option("--configdir", type=u"string",
1191
default=u"/etc/mandos", metavar=u"DIR",
1192
help=u"Directory to search for configuration"
1193
u" files")
1194
parser.add_option("--no-dbus", action=u"store_false",
1195
dest=u"use_dbus", help=u"Do not provide D-Bus"
1196
u" system bus interface")
1197
parser.add_option("--no-ipv6", action=u"store_false",
1198
dest=u"use_ipv6", help=u"Do not use IPv6")
1199
options = parser.parse_args()[0]
526
if "struct" not in sys.modules:
527
import struct
528
if "fcntl" not in sys.modules:
529
import fcntl
530
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
531
s = socket.socket()
532
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
533
struct.pack("16s16x", interface))
534
s.close()
535
interface_index = struct.unpack("I", ifreq[16:20])[0]
536
return interface_index
537
538
539
if __name__ == '__main__':
540
parser = OptionParser()
541
parser.add_option("-i", "--interface", type="string",
542
default=None, metavar="IF",
543
help="Bind to interface IF")
544
parser.add_option("--cert", type="string", default="cert.pem",
545
metavar="FILE",
546
help="Public key certificate PEM file to use")
547
parser.add_option("--key", type="string", default="key.pem",
548
metavar="FILE",
549
help="Private key PEM file to use")
550
parser.add_option("--ca", type="string", default="ca.pem",
551
metavar="FILE",
552
help="Certificate Authority certificate PEM file to use")
553
parser.add_option("--crl", type="string", default="crl.pem",
554
metavar="FILE",
555
help="Certificate Revokation List PEM file to use")
556
parser.add_option("-p", "--port", type="int", default=None,
557
help="Port number to receive requests on")
558
parser.add_option("--timeout", type="string", # Parsed later
559
default="1h",
560
help="Amount of downtime allowed for clients")
561
parser.add_option("--interval", type="string", # Parsed later
562
default="5m",
563
help="How often to check that a client is up")
564
parser.add_option("--check", action="store_true", default=False,
565
help="Run self-test")
566
parser.add_option("--debug", action="store_true", default=False,
567
help="Debug mode")
568
(options, args) = parser.parse_args()
1200
569
1201
570
if options.check:
1202
571
import doctest
1203
572
doctest.testmod()
1204
573
sys.exit()
1205
574
1206
# Default values for config file for server-global settings
1207
server_defaults = { u"interface": u"",
1208
u"address": u"",
1209
u"port": u"",
1210
u"debug": u"False",
1211
u"priority":
1212
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1213
u"servicename": u"Mandos",
1214
u"use_dbus": u"True",
1215
u"use_ipv6": u"True",
1216
}
1217
1218
# Parse config file for server-global settings
1219
server_config = configparser.SafeConfigParser(server_defaults)
1220
del server_defaults
1221
server_config.read(os.path.join(options.configdir,
1222
u"mandos.conf"))
1223
# Convert the SafeConfigParser object to a dict
1224
server_settings = server_config.defaults()
1225
# Use the appropriate methods on the non-string config options
1226
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1227
server_settings[option] = server_config.getboolean(u"DEFAULT",
1228
option)
1229
if server_settings["port"]:
1230
server_settings["port"] = server_config.getint(u"DEFAULT",
1231
u"port")
1232
del server_config
1233
1234
# Override the settings from the config file with command line
1235
# options, if set.
1236
for option in (u"interface", u"address", u"port", u"debug",
1237
u"priority", u"servicename", u"configdir",
1238
u"use_dbus", u"use_ipv6"):
1239
value = getattr(options, option)
1240
if value is not None:
1241
server_settings[option] = value
1242
del options
1243
# Force all strings to be unicode
1244
for option in server_settings.keys():
1245
if type(server_settings[option]) is str:
1246
server_settings[option] = unicode(server_settings[option])
1247
# Now we have our good server settings in "server_settings"
1248
1249
##################################################################
1250
1251
# For convenience
1252
debug = server_settings[u"debug"]
1253
use_dbus = server_settings[u"use_dbus"]
1254
use_ipv6 = server_settings[u"use_ipv6"]
1255
1256
if not debug:
1257
syslogger.setLevel(logging.WARNING)
1258
console.setLevel(logging.WARNING)
1259
1260
if server_settings[u"servicename"] != u"Mandos":
1261
syslogger.setFormatter(logging.Formatter
1262
(u'Mandos (%s) [%%(process)d]:'
1263
u' %%(levelname)s: %%(message)s'
1264
% server_settings[u"servicename"]))
1265
1266
# Parse config file with clients
1267
client_defaults = { u"timeout": u"1h",
1268
u"interval": u"5m",
1269
u"checker": u"fping -q -- %%(host)s",
1270
u"host": u"",
1271
}
1272
client_config = configparser.SafeConfigParser(client_defaults)
1273
client_config.read(os.path.join(server_settings[u"configdir"],
1274
u"clients.conf"))
1275
1276
global mandos_dbus_service
1277
mandos_dbus_service = None
1278
1279
clients = set()
1280
tcp_server = MandosServer((server_settings[u"address"],
1281
server_settings[u"port"]),
1282
ClientHandler,
1283
interface=server_settings[u"interface"],
1284
use_ipv6=use_ipv6,
1285
clients=clients,
1286
gnutls_priority=
1287
server_settings[u"priority"],
1288
use_dbus=use_dbus)
1289
pidfilename = u"/var/run/mandos.pid"
1290
try:
1291
pidfile = open(pidfilename, u"w")
1292
except IOError:
1293
logger.error(u"Could not open file %r", pidfilename)
1294
1295
try:
1296
uid = pwd.getpwnam(u"_mandos").pw_uid
1297
gid = pwd.getpwnam(u"_mandos").pw_gid
1298
except KeyError:
1299
try:
1300
uid = pwd.getpwnam(u"mandos").pw_uid
1301
gid = pwd.getpwnam(u"mandos").pw_gid
1302
except KeyError:
1303
try:
1304
uid = pwd.getpwnam(u"nobody").pw_uid
1305
gid = pwd.getpwnam(u"nobody").pw_gid
1306
except KeyError:
1307
uid = 65534
1308
gid = 65534
1309
try:
1310
os.setgid(gid)
1311
os.setuid(uid)
1312
except OSError, error:
1313
if error[0] != errno.EPERM:
1314
raise error
1315
1316
# Enable all possible GnuTLS debugging
1317
if debug:
1318
# "Use a log level over 10 to enable all debugging options."
1319
# - GnuTLS manual
1320
gnutls.library.functions.gnutls_global_set_log_level(11)
1321
1322
@gnutls.library.types.gnutls_log_func
1323
def debug_gnutls(level, string):
1324
logger.debug(u"GnuTLS: %s", string[:-1])
1325
1326
(gnutls.library.functions
1327
.gnutls_global_set_log_function(debug_gnutls))
1328
1329
global main_loop
1330
# From the Avahi example code
575
# Parse the time arguments
576
try:
577
options.timeout = string_to_delta(options.timeout)
578
except ValueError:
579
parser.error("option --timeout: Unparseable time")
580
try:
581
options.interval = string_to_delta(options.interval)
582
except ValueError:
583
parser.error("option --interval: Unparseable time")
584
585
# Parse config file
586
defaults = { "checker": "sleep 1; fping -q -- %%(fqdn)s" }
587
client_config = ConfigParser.SafeConfigParser(defaults)
588
#client_config.readfp(open("secrets.conf"), "secrets.conf")
589
client_config.read("mandos-clients.conf")
590
591
# From the Avahi server example code
1331
592
DBusGMainLoop(set_as_default=True )
1332
593
main_loop = gobject.MainLoop()
1333
594
bus = dbus.SystemBus()
595
server = dbus.Interface(
596
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
597
avahi.DBUS_INTERFACE_SERVER )
1334
598
# End of Avahi example code
1335
if use_dbus:
1336
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1337
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1338
service = AvahiService(name = server_settings[u"servicename"],
1339
servicetype = u"_mandos._tcp",
1340
protocol = protocol, bus = bus)
1341
if server_settings["interface"]:
1342
service.interface = (if_nametoindex
1343
(str(server_settings[u"interface"])))
1344
1345
client_class = Client
1346
if use_dbus:
1347
client_class = functools.partial(ClientDBus, bus = bus)
1348
clients.update(set(
1349
client_class(name = section,
1350
config= dict(client_config.items(section)))
1351
for section in client_config.sections()))
1352
if not clients:
1353
logger.warning(u"No clients defined")
1354
599
600
debug = options.debug
601
602
clients = Set()
603
def remove_from_clients(client):
604
clients.remove(client)
605
if not clients:
606
if debug:
607
sys.stderr.write(u"No clients left, exiting\n")
608
main_loop.quit()
609
610
clients.update(Set(Client(name=section, options=options,
611
stop_hook = remove_from_clients,
612
**(dict(client_config\
613
.items(section))))
614
for section in client_config.sections()))
615
for client in clients:
616
client.start()
617
618
tcp_server = IPv6_TCPServer((None, options.port),
619
tcp_handler,
620
options=options,
621
clients=clients)
622
# Find out what random port we got
623
servicePort = tcp_server.socket.getsockname()[1]
1355
624
if debug:
1356
# Redirect stdin so all checkers get /dev/null
1357
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1358
os.dup2(null, sys.stdin.fileno())
1359
if null > 2:
1360
os.close(null)
1361
else:
1362
# No console logging
1363
logger.removeHandler(console)
1364
# Close all input and output, do double fork, etc.
1365
daemon()
1366
1367
try:
1368
with closing(pidfile):
1369
pid = os.getpid()
1370
pidfile.write(str(pid) + "\n")
1371
del pidfile
1372
except IOError:
1373
logger.error(u"Could not write to file %r with PID %d",
1374
pidfilename, pid)
1375
except NameError:
1376
# "pidfile" was never created
1377
pass
1378
del pidfilename
1379
1380
def cleanup():
1381
"Cleanup function; run on exit"
1382
service.cleanup()
1383
1384
while clients:
1385
client = clients.pop()
1386
client.disable_hook = None
1387
client.disable()
1388
1389
atexit.register(cleanup)
1390
1391
if not debug:
1392
signal.signal(signal.SIGINT, signal.SIG_IGN)
1393
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1394
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1395
1396
if use_dbus:
1397
class MandosDBusService(dbus.service.Object):
1398
"""A D-Bus proxy object"""
1399
def __init__(self):
1400
dbus.service.Object.__init__(self, bus, u"/")
1401
_interface = u"se.bsnet.fukt.Mandos"
1402
1403
@dbus.service.signal(_interface, signature=u"oa{sv}")
1404
def ClientAdded(self, objpath, properties):
1405
"D-Bus signal"
1406
pass
1407
1408
@dbus.service.signal(_interface, signature=u"s")
1409
def ClientNotFound(self, fingerprint):
1410
"D-Bus signal"
1411
pass
1412
1413
@dbus.service.signal(_interface, signature=u"os")
1414
def ClientRemoved(self, objpath, name):
1415
"D-Bus signal"
1416
pass
1417
1418
@dbus.service.method(_interface, out_signature=u"ao")
1419
def GetAllClients(self):
1420
"D-Bus method"
1421
return dbus.Array(c.dbus_object_path for c in clients)
1422
1423
@dbus.service.method(_interface,
1424
out_signature=u"a{oa{sv}}")
1425
def GetAllClientsWithProperties(self):
1426
"D-Bus method"
1427
return dbus.Dictionary(
1428
((c.dbus_object_path, c.GetAllProperties())
1429
for c in clients),
1430
signature=u"oa{sv}")
1431
1432
@dbus.service.method(_interface, in_signature=u"o")
1433
def RemoveClient(self, object_path):
1434
"D-Bus method"
1435
for c in clients:
1436
if c.dbus_object_path == object_path:
1437
clients.remove(c)
1438
c.remove_from_connection()
1439
# Don't signal anything except ClientRemoved
1440
c.disable(signal=False)
1441
# Emit D-Bus signal
1442
self.ClientRemoved(object_path, c.name)
1443
return
1444
raise KeyError
1445
1446
del _interface
1447
1448
mandos_dbus_service = MandosDBusService()
1449
1450
for client in clients:
1451
if use_dbus:
1452
# Emit D-Bus signal
1453
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1454
client.GetAllProperties())
1455
client.enable()
1456
1457
tcp_server.enable()
1458
tcp_server.server_activate()
1459
1460
# Find out what port we got
1461
service.port = tcp_server.socket.getsockname()[1]
1462
if use_ipv6:
1463
logger.info(u"Now listening on address %r, port %d,"
1464
" flowinfo %d, scope_id %d"
1465
% tcp_server.socket.getsockname())
1466
else: # IPv4
1467
logger.info(u"Now listening on address %r, port %d"
1468
% tcp_server.socket.getsockname())
1469
1470
#service.interface = tcp_server.socket.getsockname()[3]
1471
1472
try:
1473
# From the Avahi example code
1474
try:
1475
service.activate()
1476
except dbus.exceptions.DBusException, error:
1477
logger.critical(u"DBusException: %s", error)
1478
sys.exit(1)
1479
# End of Avahi example code
1480
1481
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1482
lambda *args, **kwargs:
1483
(tcp_server.handle_request
1484
(*args[2:], **kwargs) or True))
1485
1486
logger.debug(u"Starting main loop")
625
sys.stderr.write(u"Now listening on port %d\n" % servicePort)
626
627
if options.interface is not None:
628
serviceInterface = if_nametoindex(options.interface)
629
630
# From the Avahi server example code
631
server.connect_to_signal("StateChanged", server_state_changed)
632
server_state_changed(server.GetState())
633
# End of Avahi example code
634
635
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
636
lambda *args, **kwargs:
637
tcp_server.handle_request(*args[2:],
638
**kwargs) or True)
639
try:
1487
640
main_loop.run()
1488
except AvahiError, error:
1489
logger.critical(u"AvahiError: %s", error)
1490
sys.exit(1)
1491
641
except KeyboardInterrupt:
1492
if debug:
1493
print >> sys.stderr
1494
logger.debug(u"Server received KeyboardInterrupt")
1495
logger.debug(u"Server exiting")
642
print
643
644
# Cleanup here
1496
645
1497
if __name__ == '__main__':
1498
main()
646
# From the Avahi server example code
647
if not group is None:
648
group.Free()
649
# End of Avahi example code
650
651
for client in clients:
652
client.stop_hook = None
653
client.stop()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0