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- Committer: Teddy Hogeborn
- Date: 2008-07-22 06:23:59 UTC
- mfrom: (24.1.1 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080722062359-qti3ecst69bq3ltk
Merge.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- clients.conf => mandos-clients.conf
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos => server.py
- files modified:
- Makefile
added
removed
server.py
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
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# methods "add" and "remove" in the "AvahiService" class, the
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# "server_state_changed" and "entry_group_state_changed" functions,
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# and some lines in "main".
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# following functions: "add_service", "remove_service",
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# "server_state_changed", "entry_group_state_changed", and some lines
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# in "main".
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12
#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
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# Påhlsson.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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24
# GNU General Public License for more details.
26
25
#
27
26
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
27
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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28
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
29
# Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
30
# <https://www.fukt.bsnet.se/~teddy/>.
32
31
#
33
32
34
from __future__ import division, with_statement, absolute_import
33
from __future__ import division
35
34
36
35
import SocketServer
37
36
import socket
38
import optparse
37
import select
38
from optparse import OptionParser
39
39
import datetime
40
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import errno
41
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import gnutls.crypto
55
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import stat
56
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import logging
57
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import logging.handlers
58
import pwd
59
from contextlib import closing
60
58
61
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import dbus
62
import dbus.service
63
60
import gobject
64
61
import avahi
65
62
from dbus.mainloop.glib import DBusGMainLoop
66
63
import ctypes
67
import ctypes.util
68
69
version = "1.0.5"
64
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# Brief description of the operation of this program:
66
#
67
# This server announces itself as a Zeroconf service. Connecting
68
# clients use the TLS protocol, with the unusual quirk that this
69
# server program acts as a TLS "client" while the connecting clients
70
# acts as a TLS "server". The clients (acting as a TLS "server") must
71
# supply an OpenPGP certificate, and the fingerprint of this
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# certificate is used by this server to look up (in a list read from a
73
# file at start time) which binary blob to give the client. No other
74
# authentication or authorization is done by this server.
75
70
76
71
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logger = logging.Logger('mandos')
72
syslogger = (logging.handlers.SysLogHandler
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
address = "/dev/log"))
75
syslogger.setFormatter(logging.Formatter
76
('Mandos: %(levelname)s: %(message)s'))
78
syslogger = logging.handlers.SysLogHandler\
79
(facility = logging.handlers.SysLogHandler.LOG_DAEMON)
80
syslogger.setFormatter(logging.Formatter\
81
('%(levelname)s: %(message)s'))
77
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logger.addHandler(syslogger)
78
79
console = logging.StreamHandler()
80
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
' %(message)s'))
82
logger.addHandler(console)
83
84
class AvahiError(Exception):
85
def __init__(self, value, *args, **kwargs):
86
self.value = value
87
super(AvahiError, self).__init__(value, *args, **kwargs)
88
def __unicode__(self):
89
return unicode(repr(self.value))
90
91
class AvahiServiceError(AvahiError):
92
pass
93
94
class AvahiGroupError(AvahiError):
95
pass
96
97
98
class AvahiService(object):
99
"""An Avahi (Zeroconf) service.
100
Attributes:
101
interface: integer; avahi.IF_UNSPEC or an interface index.
102
Used to optionally bind to the specified interface.
103
name: string; Example: 'Mandos'
104
type: string; Example: '_mandos._tcp'.
105
See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
107
TXT: list of strings; TXT record for the service
108
domain: string; Domain to publish on, default to .local if empty.
109
host: string; Host to publish records for, default is localhost
110
max_renames: integer; maximum number of renames
111
rename_count: integer; counter so we only rename after collisions
112
a sensible number of times
113
"""
114
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
servicetype = None, port = None, TXT = None,
116
domain = "", host = "", max_renames = 32768):
117
self.interface = interface
118
self.name = name
119
self.type = servicetype
120
self.port = port
121
self.TXT = TXT if TXT is not None else []
122
self.domain = domain
123
self.host = host
124
self.rename_count = 0
125
self.max_renames = max_renames
126
def rename(self):
127
"""Derived from the Avahi example code"""
128
if self.rename_count >= self.max_renames:
129
logger.critical(u"No suitable Zeroconf service name found"
130
u" after %i retries, exiting.",
131
self.rename_count)
132
raise AvahiServiceError(u"Too many renames")
133
self.name = server.GetAlternativeServiceName(self.name)
134
logger.info(u"Changing Zeroconf service name to %r ...",
135
str(self.name))
136
syslogger.setFormatter(logging.Formatter
137
('Mandos (%s): %%(levelname)s:'
138
' %%(message)s' % self.name))
139
self.remove()
140
self.add()
141
self.rename_count += 1
142
def remove(self):
143
"""Derived from the Avahi example code"""
144
if group is not None:
145
group.Reset()
146
def add(self):
147
"""Derived from the Avahi example code"""
148
global group
149
if group is None:
150
group = dbus.Interface(bus.get_object
151
(avahi.DBUS_NAME,
152
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
group.connect_to_signal('StateChanged',
155
entry_group_state_changed)
156
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
157
service.name, service.type)
158
group.AddService(
159
self.interface, # interface
160
avahi.PROTO_INET6, # protocol
161
dbus.UInt32(0), # flags
162
self.name, self.type,
163
self.domain, self.host,
164
dbus.UInt16(self.port),
165
avahi.string_array_to_txt_array(self.TXT))
166
group.Commit()
167
83
del syslogger
84
85
# This variable is used to optionally bind to a specified interface.
86
# It is a global variable to fit in with the other variables from the
87
# Avahi example code.
88
serviceInterface = avahi.IF_UNSPEC
168
89
# From the Avahi example code:
169
group = None # our entry group
90
serviceName = None
91
serviceType = "_mandos._tcp" # http://www.dns-sd.org/ServiceTypes.html
92
servicePort = None # Not known at startup
93
serviceTXT = [] # TXT record for the service
94
domain = "" # Domain to publish on, default to .local
95
host = "" # Host to publish records for, default to localhost
96
group = None #our entry group
97
rename_count = 12 # Counter so we only rename after collisions a
98
# sensible number of times
170
99
# End of Avahi example code
171
100
172
101
173
def _datetime_to_dbus(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus type."""
175
return dbus.String(dt.isoformat(), variant_level=variant_level)
176
177
178
class Client(dbus.service.Object):
102
class Client(object):
179
103
"""A representation of a client host served by this server.
180
104
Attributes:
181
name: string; from the config file, used in log messages and
182
D-Bus identifiers
105
name: string; from the config file, used in log messages
183
106
fingerprint: string (40 or 32 hexadecimal digits); used to
184
107
uniquely identify the client
185
secret: bytestring; sent verbatim (over TLS) to client
186
host: string; available for use by the checker command
187
created: datetime.datetime(); (UTC) object creation
188
last_enabled: datetime.datetime(); (UTC)
189
enabled: bool()
190
last_checked_ok: datetime.datetime(); (UTC) or None
191
timeout: datetime.timedelta(); How long from last_checked_ok
192
until this client is invalid
193
interval: datetime.timedelta(); How often to start a new checker
194
disable_hook: If set, called by disable() as disable_hook(self)
195
checker: subprocess.Popen(); a running checker process used
196
to see if the client lives.
197
'None' if no process is running.
108
secret: bytestring; sent verbatim (over TLS) to client
109
fqdn: string (FQDN); available for use by the checker command
110
created: datetime.datetime()
111
last_seen: datetime.datetime() or None if not yet seen
112
timeout: datetime.timedelta(); How long from last_seen until
113
this client is invalid
114
interval: datetime.timedelta(); How often to start a new checker
115
stop_hook: If set, called by stop() as stop_hook(self)
116
checker: subprocess.Popen(); a running checker process used
117
to see if the client lives.
118
Is None if no process is running.
198
119
checker_initiator_tag: a gobject event source tag, or None
199
disable_initiator_tag: - '' -
120
stop_initiator_tag: - '' -
200
121
checker_callback_tag: - '' -
201
122
checker_command: string; External command which is run to check if
202
client lives. %() expansions are done at
123
client lives. %()s expansions are done at
203
124
runtime with vars(self) as dict, so that for
204
125
instance %(name)s can be used in the command.
205
use_dbus: bool(); Whether to provide D-Bus interface and signals
206
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
126
Private attibutes:
127
_timeout: Real variable for 'timeout'
128
_interval: Real variable for 'interval'
129
_timeout_milliseconds: Used by gobject.timeout_add()
130
_interval_milliseconds: - '' -
207
131
"""
208
def timeout_milliseconds(self):
209
"Return the 'timeout' attribute in milliseconds"
210
return ((self.timeout.days * 24 * 60 * 60 * 1000)
211
+ (self.timeout.seconds * 1000)
212
+ (self.timeout.microseconds // 1000))
213
214
def interval_milliseconds(self):
215
"Return the 'interval' attribute in milliseconds"
216
return ((self.interval.days * 24 * 60 * 60 * 1000)
217
+ (self.interval.seconds * 1000)
218
+ (self.interval.microseconds // 1000))
219
220
def __init__(self, name = None, disable_hook=None, config=None,
221
use_dbus=True):
222
"""Note: the 'checker' key in 'config' sets the
223
'checker_command' attribute and *not* the 'checker'
224
attribute."""
132
def _set_timeout(self, timeout):
133
"Setter function for 'timeout' attribute"
134
self._timeout = timeout
135
self._timeout_milliseconds = ((self.timeout.days
136
* 24 * 60 * 60 * 1000)
137
+ (self.timeout.seconds * 1000)
138
+ (self.timeout.microseconds
139
// 1000))
140
timeout = property(lambda self: self._timeout,
141
_set_timeout)
142
del _set_timeout
143
def _set_interval(self, interval):
144
"Setter function for 'interval' attribute"
145
self._interval = interval
146
self._interval_milliseconds = ((self.interval.days
147
* 24 * 60 * 60 * 1000)
148
+ (self.interval.seconds
149
* 1000)
150
+ (self.interval.microseconds
151
// 1000))
152
interval = property(lambda self: self._interval,
153
_set_interval)
154
del _set_interval
155
def __init__(self, name=None, stop_hook=None, fingerprint=None,
156
secret=None, secfile=None, fqdn=None, timeout=None,
157
interval=-1, checker=None):
158
"""Note: the 'checker' argument sets the 'checker_command'
159
attribute and not the 'checker' attribute.."""
225
160
self.name = name
226
if config is None:
227
config = {}
228
161
logger.debug(u"Creating client %r", self.name)
229
self.use_dbus = False # During __init__
230
# Uppercase and remove spaces from fingerprint for later
231
# comparison purposes with return value from the fingerprint()
232
# function
233
self.fingerprint = (config["fingerprint"].upper()
234
.replace(u" ", u""))
162
# Uppercase and remove spaces from fingerprint
163
# for later comparison purposes with return value of
164
# the fingerprint() function
165
self.fingerprint = fingerprint.upper().replace(u" ", u"")
235
166
logger.debug(u" Fingerprint: %s", self.fingerprint)
236
if "secret" in config:
237
self.secret = config["secret"].decode(u"base64")
238
elif "secfile" in config:
239
with closing(open(os.path.expanduser
240
(os.path.expandvars
241
(config["secfile"])))) as secfile:
242
self.secret = secfile.read()
167
if secret:
168
self.secret = secret.decode(u"base64")
169
elif secfile:
170
sf = open(secfile)
171
self.secret = sf.read()
172
sf.close()
243
173
else:
244
raise TypeError(u"No secret or secfile for client %s"
245
% self.name)
246
self.host = config.get("host", "")
247
self.created = datetime.datetime.utcnow()
248
self.enabled = False
249
self.last_enabled = None
250
self.last_checked_ok = None
251
self.timeout = string_to_delta(config["timeout"])
252
self.interval = string_to_delta(config["interval"])
253
self.disable_hook = disable_hook
174
raise RuntimeError(u"No secret or secfile for client %s"
175
% self.name)
176
self.fqdn = fqdn # string
177
self.created = datetime.datetime.now()
178
self.last_seen = None
179
self.timeout = string_to_delta(timeout)
180
self.interval = string_to_delta(interval)
181
self.stop_hook = stop_hook
254
182
self.checker = None
255
183
self.checker_initiator_tag = None
256
self.disable_initiator_tag = None
184
self.stop_initiator_tag = None
257
185
self.checker_callback_tag = None
258
self.checker_command = config["checker"]
259
self.last_connect = None
260
# Only now, when this client is initialized, can it show up on
261
# the D-Bus
262
self.use_dbus = use_dbus
263
if self.use_dbus:
264
self.dbus_object_path = (dbus.ObjectPath
265
("/clients/"
266
+ self.name.replace(".", "_")))
267
dbus.service.Object.__init__(self, bus,
268
self.dbus_object_path)
269
270
def enable(self):
186
self.check_command = checker
187
def start(self):
271
188
"""Start this client's checker and timeout hooks"""
272
self.last_enabled = datetime.datetime.utcnow()
273
189
# Schedule a new checker to be started an 'interval' from now,
274
190
# and every interval from then on.
275
self.checker_initiator_tag = (gobject.timeout_add
276
(self.interval_milliseconds(),
277
self.start_checker))
191
self.checker_initiator_tag = gobject.timeout_add\
192
(self._interval_milliseconds,
193
self.start_checker)
278
194
# Also start a new checker *right now*.
279
195
self.start_checker()
280
# Schedule a disable() when 'timeout' has passed
281
self.disable_initiator_tag = (gobject.timeout_add
282
(self.timeout_milliseconds(),
283
self.disable))
284
self.enabled = True
285
if self.use_dbus:
286
# Emit D-Bus signals
287
self.PropertyChanged(dbus.String(u"enabled"),
288
dbus.Boolean(True, variant_level=1))
289
self.PropertyChanged(dbus.String(u"last_enabled"),
290
(_datetime_to_dbus(self.last_enabled,
291
variant_level=1)))
292
293
def disable(self):
294
"""Disable this client."""
295
if not getattr(self, "enabled", False):
196
# Schedule a stop() when 'timeout' has passed
197
self.stop_initiator_tag = gobject.timeout_add\
198
(self._timeout_milliseconds,
199
self.stop)
200
def stop(self):
201
"""Stop this client.
202
The possibility that this client might be restarted is left
203
open, but not currently used."""
204
# If this client doesn't have a secret, it is already stopped.
205
if self.secret:
206
logger.debug(u"Stopping client %s", self.name)
207
self.secret = None
208
else:
296
209
return False
297
logger.info(u"Disabling client %s", self.name)
298
if getattr(self, "disable_initiator_tag", False):
299
gobject.source_remove(self.disable_initiator_tag)
300
self.disable_initiator_tag = None
301
if getattr(self, "checker_initiator_tag", False):
210
if hasattr(self, "stop_initiator_tag") \
211
and self.stop_initiator_tag:
212
gobject.source_remove(self.stop_initiator_tag)
213
self.stop_initiator_tag = None
214
if hasattr(self, "checker_initiator_tag") \
215
and self.checker_initiator_tag:
302
216
gobject.source_remove(self.checker_initiator_tag)
303
217
self.checker_initiator_tag = None
304
218
self.stop_checker()
305
if self.disable_hook:
306
self.disable_hook(self)
307
self.enabled = False
308
if self.use_dbus:
309
# Emit D-Bus signal
310
self.PropertyChanged(dbus.String(u"enabled"),
311
dbus.Boolean(False, variant_level=1))
219
if self.stop_hook:
220
self.stop_hook(self)
312
221
# Do not run this again if called by a gobject.timeout_add
313
222
return False
314
315
223
def __del__(self):
316
self.disable_hook = None
317
self.disable()
318
319
def checker_callback(self, pid, condition, command):
224
self.stop_hook = None
225
self.stop()
226
def checker_callback(self, pid, condition):
320
227
"""The checker has completed, so take appropriate actions."""
228
now = datetime.datetime.now()
321
229
self.checker_callback_tag = None
322
230
self.checker = None
323
if self.use_dbus:
324
# Emit D-Bus signal
325
self.PropertyChanged(dbus.String(u"checker_running"),
326
dbus.Boolean(False, variant_level=1))
327
if (os.WIFEXITED(condition)
328
and (os.WEXITSTATUS(condition) == 0)):
329
logger.info(u"Checker for %(name)s succeeded",
330
vars(self))
331
if self.use_dbus:
332
# Emit D-Bus signal
333
self.CheckerCompleted(dbus.Boolean(True),
334
dbus.UInt16(condition),
335
dbus.String(command))
336
self.bump_timeout()
231
if os.WIFEXITED(condition) \
232
and (os.WEXITSTATUS(condition) == 0):
233
logger.debug(u"Checker for %(name)s succeeded",
234
vars(self))
235
self.last_seen = now
236
gobject.source_remove(self.stop_initiator_tag)
237
self.stop_initiator_tag = gobject.timeout_add\
238
(self._timeout_milliseconds,
239
self.stop)
337
240
elif not os.WIFEXITED(condition):
338
241
logger.warning(u"Checker for %(name)s crashed?",
339
242
vars(self))
340
if self.use_dbus:
341
# Emit D-Bus signal
342
self.CheckerCompleted(dbus.Boolean(False),
343
dbus.UInt16(condition),
344
dbus.String(command))
345
243
else:
346
logger.info(u"Checker for %(name)s failed",
347
vars(self))
348
if self.use_dbus:
349
# Emit D-Bus signal
350
self.CheckerCompleted(dbus.Boolean(False),
351
dbus.UInt16(condition),
352
dbus.String(command))
353
354
def bump_timeout(self):
355
"""Bump up the timeout for this client.
356
This should only be called when the client has been seen,
357
alive and well.
358
"""
359
self.last_checked_ok = datetime.datetime.utcnow()
360
gobject.source_remove(self.disable_initiator_tag)
361
self.disable_initiator_tag = (gobject.timeout_add
362
(self.timeout_milliseconds(),
363
self.disable))
364
if self.use_dbus:
365
# Emit D-Bus signal
366
self.PropertyChanged(
367
dbus.String(u"last_checked_ok"),
368
(_datetime_to_dbus(self.last_checked_ok,
369
variant_level=1)))
370
244
logger.debug(u"Checker for %(name)s failed",
245
vars(self))
371
246
def start_checker(self):
372
247
"""Start a new checker subprocess if one is not running.
373
248
If a checker already exists, leave it running and do
382
257
# is as it should be.
383
258
if self.checker is None:
384
259
try:
385
# In case checker_command has exactly one % operator
386
command = self.checker_command % self.host
260
command = self.check_command % self.fqdn
387
261
except TypeError:
388
# Escape attributes for the shell
389
262
escaped_attrs = dict((key, re.escape(str(val)))
390
263
for key, val in
391
264
vars(self).iteritems())
392
265
try:
393
command = self.checker_command % escaped_attrs
266
command = self.check_command % escaped_attrs
394
267
except TypeError, error:
395
logger.error(u'Could not format string "%s":'
396
u' %s', self.checker_command, error)
268
logger.critical(u'Could not format string "%s":'
269
u' %s', self.check_command, error)
397
270
return True # Try again later
398
271
try:
399
logger.info(u"Starting checker %r for %s",
400
command, self.name)
401
# We don't need to redirect stdout and stderr, since
402
# in normal mode, that is already done by daemon(),
403
# and in debug mode we don't want to. (Stdin is
404
# always replaced by /dev/null.)
405
self.checker = subprocess.Popen(command,
406
close_fds=True,
407
shell=True, cwd="/")
408
if self.use_dbus:
409
# Emit D-Bus signal
410
self.CheckerStarted(command)
411
self.PropertyChanged(
412
dbus.String("checker_running"),
413
dbus.Boolean(True, variant_level=1))
414
self.checker_callback_tag = (gobject.child_watch_add
415
(self.checker.pid,
416
self.checker_callback,
417
data=command))
418
except OSError, error:
272
logger.debug(u"Starting checker %r for %s",
273
command, self.name)
274
self.checker = subprocess.\
275
Popen(command,
276
close_fds=True, shell=True,
277
cwd="/")
278
self.checker_callback_tag = gobject.child_watch_add\
279
(self.checker.pid,
280
self.checker_callback)
281
except subprocess.OSError, error:
419
282
logger.error(u"Failed to start subprocess: %s",
420
283
error)
421
284
# Re-run this periodically if run by gobject.timeout_add
422
285
return True
423
424
286
def stop_checker(self):
425
287
"""Force the checker process, if any, to stop."""
426
288
if self.checker_callback_tag:
427
289
gobject.source_remove(self.checker_callback_tag)
428
290
self.checker_callback_tag = None
429
if getattr(self, "checker", None) is None:
291
if not hasattr(self, "checker") or self.checker is None:
430
292
return
431
logger.debug(u"Stopping checker for %(name)s", vars(self))
293
logger.debug("Stopping checker for %(name)s", vars(self))
432
294
try:
433
295
os.kill(self.checker.pid, signal.SIGTERM)
434
296
#os.sleep(0.5)
435
297
#if self.checker.poll() is None:
436
298
# os.kill(self.checker.pid, signal.SIGKILL)
437
299
except OSError, error:
438
if error.errno != errno.ESRCH: # No such process
300
if error.errno != errno.ESRCH:
439
301
raise
440
302
self.checker = None
441
if self.use_dbus:
442
self.PropertyChanged(dbus.String(u"checker_running"),
443
dbus.Boolean(False, variant_level=1))
444
445
def still_valid(self):
303
def still_valid(self, now=None):
446
304
"""Has the timeout not yet passed for this client?"""
447
if not getattr(self, "enabled", False):
448
return False
449
now = datetime.datetime.utcnow()
450
if self.last_checked_ok is None:
305
if now is None:
306
now = datetime.datetime.now()
307
if self.last_seen is None:
451
308
return now < (self.created + self.timeout)
452
309
else:
453
return now < (self.last_checked_ok + self.timeout)
454
455
## D-Bus methods & signals
456
_interface = u"se.bsnet.fukt.Mandos.Client"
457
458
# BumpTimeout - method
459
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
460
BumpTimeout.__name__ = "BumpTimeout"
461
462
# CheckerCompleted - signal
463
@dbus.service.signal(_interface, signature="bqs")
464
def CheckerCompleted(self, success, condition, command):
465
"D-Bus signal"
466
pass
467
468
# CheckerStarted - signal
469
@dbus.service.signal(_interface, signature="s")
470
def CheckerStarted(self, command):
471
"D-Bus signal"
472
pass
473
474
# GetAllProperties - method
475
@dbus.service.method(_interface, out_signature="a{sv}")
476
def GetAllProperties(self):
477
"D-Bus method"
478
return dbus.Dictionary({
479
dbus.String("name"):
480
dbus.String(self.name, variant_level=1),
481
dbus.String("fingerprint"):
482
dbus.String(self.fingerprint, variant_level=1),
483
dbus.String("host"):
484
dbus.String(self.host, variant_level=1),
485
dbus.String("created"):
486
_datetime_to_dbus(self.created, variant_level=1),
487
dbus.String("last_enabled"):
488
(_datetime_to_dbus(self.last_enabled,
489
variant_level=1)
490
if self.last_enabled is not None
491
else dbus.Boolean(False, variant_level=1)),
492
dbus.String("enabled"):
493
dbus.Boolean(self.enabled, variant_level=1),
494
dbus.String("last_checked_ok"):
495
(_datetime_to_dbus(self.last_checked_ok,
496
variant_level=1)
497
if self.last_checked_ok is not None
498
else dbus.Boolean (False, variant_level=1)),
499
dbus.String("timeout"):
500
dbus.UInt64(self.timeout_milliseconds(),
501
variant_level=1),
502
dbus.String("interval"):
503
dbus.UInt64(self.interval_milliseconds(),
504
variant_level=1),
505
dbus.String("checker"):
506
dbus.String(self.checker_command,
507
variant_level=1),
508
dbus.String("checker_running"):
509
dbus.Boolean(self.checker is not None,
510
variant_level=1),
511
dbus.String("object_path"):
512
dbus.ObjectPath(self.dbus_object_path,
513
variant_level=1)
514
}, signature="sv")
515
516
# IsStillValid - method
517
IsStillValid = (dbus.service.method(_interface, out_signature="b")
518
(still_valid))
519
IsStillValid.__name__ = "IsStillValid"
520
521
# PropertyChanged - signal
522
@dbus.service.signal(_interface, signature="sv")
523
def PropertyChanged(self, property, value):
524
"D-Bus signal"
525
pass
526
527
# SetChecker - method
528
@dbus.service.method(_interface, in_signature="s")
529
def SetChecker(self, checker):
530
"D-Bus setter method"
531
self.checker_command = checker
532
# Emit D-Bus signal
533
self.PropertyChanged(dbus.String(u"checker"),
534
dbus.String(self.checker_command,
535
variant_level=1))
536
537
# SetHost - method
538
@dbus.service.method(_interface, in_signature="s")
539
def SetHost(self, host):
540
"D-Bus setter method"
541
self.host = host
542
# Emit D-Bus signal
543
self.PropertyChanged(dbus.String(u"host"),
544
dbus.String(self.host, variant_level=1))
545
546
# SetInterval - method
547
@dbus.service.method(_interface, in_signature="t")
548
def SetInterval(self, milliseconds):
549
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
550
# Emit D-Bus signal
551
self.PropertyChanged(dbus.String(u"interval"),
552
(dbus.UInt64(self.interval_milliseconds(),
553
variant_level=1)))
554
555
# SetSecret - method
556
@dbus.service.method(_interface, in_signature="ay",
557
byte_arrays=True)
558
def SetSecret(self, secret):
559
"D-Bus setter method"
560
self.secret = str(secret)
561
562
# SetTimeout - method
563
@dbus.service.method(_interface, in_signature="t")
564
def SetTimeout(self, milliseconds):
565
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
566
# Emit D-Bus signal
567
self.PropertyChanged(dbus.String(u"timeout"),
568
(dbus.UInt64(self.timeout_milliseconds(),
569
variant_level=1)))
570
571
# Enable - method
572
Enable = dbus.service.method(_interface)(enable)
573
Enable.__name__ = "Enable"
574
575
# StartChecker - method
576
@dbus.service.method(_interface)
577
def StartChecker(self):
578
"D-Bus method"
579
self.start_checker()
580
581
# Disable - method
582
@dbus.service.method(_interface)
583
def Disable(self):
584
"D-Bus method"
585
self.disable()
586
587
# StopChecker - method
588
StopChecker = dbus.service.method(_interface)(stop_checker)
589
StopChecker.__name__ = "StopChecker"
590
591
del _interface
310
return now < (self.last_seen + self.timeout)
592
311
593
312
594
313
def peer_certificate(session):
595
314
"Return the peer's OpenPGP certificate as a bytestring"
596
315
# If not an OpenPGP certificate...
597
if (gnutls.library.functions
598
.gnutls_certificate_type_get(session._c_object)
599
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
316
if gnutls.library.functions.gnutls_certificate_type_get\
317
(session._c_object) \
318
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
600
319
# ...do the normal thing
601
320
return session.peer_certificate
602
321
list_size = ctypes.c_uint()
603
cert_list = (gnutls.library.functions
604
.gnutls_certificate_get_peers
605
(session._c_object, ctypes.byref(list_size)))
322
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
323
(session._c_object, ctypes.byref(list_size))
606
324
if list_size.value == 0:
607
325
return None
608
326
cert = cert_list[0]
611
329
612
330
def fingerprint(openpgp):
613
331
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
614
# New GnuTLS "datum" with the OpenPGP public key
615
datum = (gnutls.library.types
616
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
617
ctypes.POINTER
618
(ctypes.c_ubyte)),
619
ctypes.c_uint(len(openpgp))))
620
332
# New empty GnuTLS certificate
621
333
crt = gnutls.library.types.gnutls_openpgp_crt_t()
622
(gnutls.library.functions
623
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
334
gnutls.library.functions.gnutls_openpgp_crt_init\
335
(ctypes.byref(crt))
336
# New GnuTLS "datum" with the OpenPGP public key
337
datum = gnutls.library.types.gnutls_datum_t\
338
(ctypes.cast(ctypes.c_char_p(openpgp),
339
ctypes.POINTER(ctypes.c_ubyte)),
340
ctypes.c_uint(len(openpgp)))
624
341
# Import the OpenPGP public key into the certificate
625
(gnutls.library.functions
626
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
627
gnutls.library.constants
628
.GNUTLS_OPENPGP_FMT_RAW))
629
# Verify the self signature in the key
630
crtverify = ctypes.c_uint()
631
(gnutls.library.functions
632
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
633
if crtverify.value != 0:
634
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
635
raise gnutls.errors.CertificateSecurityError("Verify failed")
342
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
343
(crt,
344
ctypes.byref(datum),
345
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
636
346
# New buffer for the fingerprint
637
buf = ctypes.create_string_buffer(20)
638
buf_len = ctypes.c_size_t()
347
buffer = ctypes.create_string_buffer(20)
348
buffer_length = ctypes.c_size_t()
639
349
# Get the fingerprint from the certificate into the buffer
640
(gnutls.library.functions
641
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
642
ctypes.byref(buf_len)))
350
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
351
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
643
352
# Deinit the certificate
644
353
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
645
354
# Convert the buffer to a Python bytestring
646
fpr = ctypes.string_at(buf, buf_len.value)
355
fpr = ctypes.string_at(buffer, buffer_length.value)
647
356
# Convert the bytestring to hexadecimal notation
648
357
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
649
358
return hex_fpr
650
359
651
360
652
class TCP_handler(SocketServer.BaseRequestHandler, object):
361
class tcp_handler(SocketServer.BaseRequestHandler, object):
653
362
"""A TCP request handler class.
654
363
Instantiated by IPv6_TCPServer for each request to handle it.
655
364
Note: This will run in its own forked process."""
656
365
657
366
def handle(self):
658
logger.info(u"TCP connection from: %s",
659
unicode(self.client_address))
660
session = (gnutls.connection
661
.ClientSession(self.request,
662
gnutls.connection
663
.X509Credentials()))
664
665
line = self.request.makefile().readline()
666
logger.debug(u"Protocol version: %r", line)
667
try:
668
if int(line.strip().split()[0]) > 1:
669
raise RuntimeError
670
except (ValueError, IndexError, RuntimeError), error:
671
logger.error(u"Unknown protocol version: %s", error)
672
return
673
674
# Note: gnutls.connection.X509Credentials is really a generic
675
# GnuTLS certificate credentials object so long as no X.509
676
# keys are added to it. Therefore, we can use it here despite
677
# using OpenPGP certificates.
367
logger.debug(u"TCP connection from: %s",
368
unicode(self.client_address))
369
session = gnutls.connection.ClientSession(self.request,
370
gnutls.connection.\
371
X509Credentials())
678
372
679
373
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
680
374
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
681
375
# "+DHE-DSS"))
682
# Use a fallback default, since this MUST be set.
683
priority = self.server.settings.get("priority", "NORMAL")
684
(gnutls.library.functions
685
.gnutls_priority_set_direct(session._c_object,
686
priority, None))
376
priority = "NORMAL"
377
if self.server.options.priority:
378
priority = self.server.options.priority
379
gnutls.library.functions.gnutls_priority_set_direct\
380
(session._c_object, priority, None);
687
381
688
382
try:
689
383
session.handshake()
690
384
except gnutls.errors.GNUTLSError, error:
691
logger.warning(u"Handshake failed: %s", error)
385
logger.debug(u"Handshake failed: %s", error)
692
386
# Do not run session.bye() here: the session is not
693
387
# established. Just abandon the request.
694
388
return
695
389
try:
696
390
fpr = fingerprint(peer_certificate(session))
697
391
except (TypeError, gnutls.errors.GNUTLSError), error:
698
logger.warning(u"Bad certificate: %s", error)
392
logger.debug(u"Bad certificate: %s", error)
699
393
session.bye()
700
394
return
701
395
logger.debug(u"Fingerprint: %s", fpr)
396
client = None
702
397
for c in self.server.clients:
703
398
if c.fingerprint == fpr:
704
399
client = c
705
400
break
706
else:
707
logger.warning(u"Client not found for fingerprint: %s",
708
fpr)
709
session.bye()
710
return
711
401
# Have to check if client.still_valid(), since it is possible
712
402
# that the client timed out while establishing the GnuTLS
713
403
# session.
714
if not client.still_valid():
715
logger.warning(u"Client %(name)s is invalid",
716
vars(client))
404
if (not client) or (not client.still_valid()):
405
if client:
406
logger.debug(u"Client %(name)s is invalid",
407
vars(client))
408
else:
409
logger.debug(u"Client not found for fingerprint: %s",
410
fpr)
717
411
session.bye()
718
412
return
719
## This won't work here, since we're in a fork.
720
# client.bump_timeout()
721
413
sent_size = 0
722
414
while sent_size < len(client.secret):
723
415
sent = session.send(client.secret[sent_size:])
728
420
session.bye()
729
421
730
422
731
class IPv6_TCPServer(SocketServer.ForkingMixIn,
732
SocketServer.TCPServer, object):
423
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
733
424
"""IPv6 TCP server. Accepts 'None' as address and/or port.
734
425
Attributes:
735
settings: Server settings
426
options: Command line options
736
427
clients: Set() of Client objects
737
enabled: Boolean; whether this server is activated yet
738
428
"""
739
429
address_family = socket.AF_INET6
740
430
def __init__(self, *args, **kwargs):
741
if "settings" in kwargs:
742
self.settings = kwargs["settings"]
743
del kwargs["settings"]
431
if "options" in kwargs:
432
self.options = kwargs["options"]
433
del kwargs["options"]
744
434
if "clients" in kwargs:
745
435
self.clients = kwargs["clients"]
746
436
del kwargs["clients"]
747
self.enabled = False
748
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
437
return super(type(self), self).__init__(*args, **kwargs)
749
438
def server_bind(self):
750
439
"""This overrides the normal server_bind() function
751
440
to bind to an interface if one was specified, and also NOT to
752
441
bind to an address or port if they were not specified."""
753
if self.settings["interface"]:
754
# 25 is from /usr/include/asm-i486/socket.h
755
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
442
if self.options.interface:
443
if not hasattr(socket, "SO_BINDTODEVICE"):
444
# From /usr/include/asm-i486/socket.h
445
socket.SO_BINDTODEVICE = 25
756
446
try:
757
447
self.socket.setsockopt(socket.SOL_SOCKET,
758
SO_BINDTODEVICE,
759
self.settings["interface"])
448
socket.SO_BINDTODEVICE,
449
self.options.interface)
760
450
except socket.error, error:
761
451
if error[0] == errno.EPERM:
762
logger.error(u"No permission to"
763
u" bind to interface %s",
764
self.settings["interface"])
452
logger.warning(u"No permission to"
453
u" bind to interface %s",
454
self.options.interface)
765
455
else:
766
456
raise error
767
457
# Only bind(2) the socket if we really need to.
770
460
in6addr_any = "::"
771
461
self.server_address = (in6addr_any,
772
462
self.server_address[1])
773
elif not self.server_address[1]:
463
elif self.server_address[1] is None:
774
464
self.server_address = (self.server_address[0],
775
465
0)
776
# if self.settings["interface"]:
777
# self.server_address = (self.server_address[0],
778
# 0, # port
779
# 0, # flowinfo
780
# if_nametoindex
781
# (self.settings
782
# ["interface"]))
783
return super(IPv6_TCPServer, self).server_bind()
784
def server_activate(self):
785
if self.enabled:
786
return super(IPv6_TCPServer, self).server_activate()
787
def enable(self):
788
self.enabled = True
466
return super(type(self), self).server_bind()
789
467
790
468
791
469
def string_to_delta(interval):
801
479
datetime.timedelta(1)
802
480
>>> string_to_delta(u'1w')
803
481
datetime.timedelta(7)
804
>>> string_to_delta('5m 30s')
805
datetime.timedelta(0, 330)
806
482
"""
807
timevalue = datetime.timedelta(0)
808
for s in interval.split():
809
try:
810
suffix = unicode(s[-1])
811
value = int(s[:-1])
812
if suffix == u"d":
813
delta = datetime.timedelta(value)
814
elif suffix == u"s":
815
delta = datetime.timedelta(0, value)
816
elif suffix == u"m":
817
delta = datetime.timedelta(0, 0, 0, 0, value)
818
elif suffix == u"h":
819
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
820
elif suffix == u"w":
821
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
822
else:
823
raise ValueError
824
except (ValueError, IndexError):
483
try:
484
suffix=unicode(interval[-1])
485
value=int(interval[:-1])
486
if suffix == u"d":
487
delta = datetime.timedelta(value)
488
elif suffix == u"s":
489
delta = datetime.timedelta(0, value)
490
elif suffix == u"m":
491
delta = datetime.timedelta(0, 0, 0, 0, value)
492
elif suffix == u"h":
493
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
494
elif suffix == u"w":
495
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
496
else:
825
497
raise ValueError
826
timevalue += delta
827
return timevalue
498
except (ValueError, IndexError):
499
raise ValueError
500
return delta
501
502
503
def add_service():
504
"""Derived from the Avahi example code"""
505
global group, serviceName, serviceType, servicePort, serviceTXT, \
506
domain, host
507
if group is None:
508
group = dbus.Interface(
509
bus.get_object( avahi.DBUS_NAME,
510
server.EntryGroupNew()),
511
avahi.DBUS_INTERFACE_ENTRY_GROUP)
512
group.connect_to_signal('StateChanged',
513
entry_group_state_changed)
514
logger.debug(u"Adding service '%s' of type '%s' ...",
515
serviceName, serviceType)
516
517
group.AddService(
518
serviceInterface, # interface
519
avahi.PROTO_INET6, # protocol
520
dbus.UInt32(0), # flags
521
serviceName, serviceType,
522
domain, host,
523
dbus.UInt16(servicePort),
524
avahi.string_array_to_txt_array(serviceTXT))
525
group.Commit()
526
527
528
def remove_service():
529
"""From the Avahi example code"""
530
global group
531
532
if not group is None:
533
group.Reset()
828
534
829
535
830
536
def server_state_changed(state):
831
537
"""Derived from the Avahi example code"""
832
538
if state == avahi.SERVER_COLLISION:
833
logger.error(u"Zeroconf server name collision")
834
service.remove()
539
logger.warning(u"Server name collision")
540
remove_service()
835
541
elif state == avahi.SERVER_RUNNING:
836
service.add()
542
add_service()
837
543
838
544
839
545
def entry_group_state_changed(state, error):
840
546
"""Derived from the Avahi example code"""
841
logger.debug(u"Avahi state change: %i", state)
547
global serviceName, server, rename_count
548
549
logger.debug(u"state change: %i", state)
842
550
843
551
if state == avahi.ENTRY_GROUP_ESTABLISHED:
844
logger.debug(u"Zeroconf service established.")
552
logger.debug(u"Service established.")
845
553
elif state == avahi.ENTRY_GROUP_COLLISION:
846
logger.warning(u"Zeroconf service name collision.")
847
service.rename()
554
555
rename_count = rename_count - 1
556
if rename_count > 0:
557
name = server.GetAlternativeServiceName(name)
558
logger.warning(u"Service name collision, "
559
u"changing name to '%s' ...", name)
560
remove_service()
561
add_service()
562
563
else:
564
logger.error(u"No suitable service name found after %i"
565
u" retries, exiting.", n_rename)
566
killme(1)
848
567
elif state == avahi.ENTRY_GROUP_FAILURE:
849
logger.critical(u"Avahi: Error in group state changed %s",
850
unicode(error))
851
raise AvahiGroupError(u"State changed: %s" % unicode(error))
568
logger.error(u"Error in group state changed %s",
569
unicode(error))
570
killme(1)
571
852
572
853
573
def if_nametoindex(interface):
854
"""Call the C function if_nametoindex(), or equivalent"""
855
global if_nametoindex
574
"""Call the C function if_nametoindex()"""
856
575
try:
857
if_nametoindex = (ctypes.cdll.LoadLibrary
858
(ctypes.util.find_library("c"))
859
.if_nametoindex)
576
libc = ctypes.cdll.LoadLibrary("libc.so.6")
577
return libc.if_nametoindex(interface)
860
578
except (OSError, AttributeError):
861
579
if "struct" not in sys.modules:
862
580
import struct
863
581
if "fcntl" not in sys.modules:
864
582
import fcntl
865
def if_nametoindex(interface):
866
"Get an interface index the hard way, i.e. using fcntl()"
867
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
868
with closing(socket.socket()) as s:
869
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
870
struct.pack("16s16x", interface))
871
interface_index = struct.unpack("I", ifreq[16:20])[0]
872
return interface_index
873
return if_nametoindex(interface)
874
875
876
def daemon(nochdir = False, noclose = False):
583
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
584
s = socket.socket()
585
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
586
struct.pack("16s16x", interface))
587
s.close()
588
interface_index = struct.unpack("I", ifreq[16:20])[0]
589
return interface_index
590
591
592
def daemon(nochdir, noclose):
877
593
"""See daemon(3). Standard BSD Unix function.
878
594
This should really exist as os.daemon, but it doesn't (yet)."""
879
595
if os.fork():
881
597
os.setsid()
882
598
if not nochdir:
883
599
os.chdir("/")
884
if os.fork():
885
sys.exit()
886
600
if not noclose:
887
601
# Close all standard open file descriptors
888
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
602
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
889
603
if not stat.S_ISCHR(os.fstat(null).st_mode):
890
604
raise OSError(errno.ENODEV,
891
605
"/dev/null not a character device")
896
610
os.close(null)
897
611
898
612
613
def killme(status = 0):
614
logger.debug("Stopping server with exit status %d", status)
615
exitstatus = status
616
if main_loop_started:
617
main_loop.quit()
618
else:
619
sys.exit(status)
620
621
899
622
def main():
900
parser = optparse.OptionParser(version = "%%prog %s" % version)
623
global exitstatus
624
exitstatus = 0
625
global main_loop_started
626
main_loop_started = False
627
628
parser = OptionParser()
901
629
parser.add_option("-i", "--interface", type="string",
902
metavar="IF", help="Bind to interface IF")
903
parser.add_option("-a", "--address", type="string",
630
default=None, metavar="IF",
631
help="Bind to interface IF")
632
parser.add_option("-a", "--address", type="string", default=None,
904
633
help="Address to listen for requests on")
905
parser.add_option("-p", "--port", type="int",
634
parser.add_option("-p", "--port", type="int", default=None,
906
635
help="Port number to receive requests on")
907
parser.add_option("--check", action="store_true",
636
parser.add_option("--check", action="store_true", default=False,
908
637
help="Run self-test")
909
parser.add_option("--debug", action="store_true",
910
help="Debug mode; run in foreground and log to"
911
" terminal")
912
parser.add_option("--priority", type="string", help="GnuTLS"
913
" priority string (see GnuTLS documentation)")
914
parser.add_option("--servicename", type="string", metavar="NAME",
915
help="Zeroconf service name")
916
parser.add_option("--configdir", type="string",
917
default="/etc/mandos", metavar="DIR",
918
help="Directory to search for configuration"
919
" files")
920
parser.add_option("--no-dbus", action="store_false",
921
dest="use_dbus",
922
help="Do not provide D-Bus system bus"
923
" interface")
924
options = parser.parse_args()[0]
638
parser.add_option("--debug", action="store_true", default=False,
639
help="Debug mode")
640
parser.add_option("--priority", type="string",
641
default="SECURE256",
642
help="GnuTLS priority string"
643
" (see GnuTLS documentation)")
644
parser.add_option("--servicename", type="string",
645
default="Mandos", help="Zeroconf service name")
646
(options, args) = parser.parse_args()
925
647
926
648
if options.check:
927
649
import doctest
928
650
doctest.testmod()
929
651
sys.exit()
930
652
931
# Default values for config file for server-global settings
932
server_defaults = { "interface": "",
933
"address": "",
934
"port": "",
935
"debug": "False",
936
"priority":
937
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
938
"servicename": "Mandos",
939
"use_dbus": "True",
940
}
941
942
# Parse config file for server-global settings
943
server_config = ConfigParser.SafeConfigParser(server_defaults)
944
del server_defaults
945
server_config.read(os.path.join(options.configdir, "mandos.conf"))
946
# Convert the SafeConfigParser object to a dict
947
server_settings = server_config.defaults()
948
# Use getboolean on the boolean config options
949
server_settings["debug"] = (server_config.getboolean
950
("DEFAULT", "debug"))
951
server_settings["use_dbus"] = (server_config.getboolean
952
("DEFAULT", "use_dbus"))
953
del server_config
954
955
# Override the settings from the config file with command line
956
# options, if set.
957
for option in ("interface", "address", "port", "debug",
958
"priority", "servicename", "configdir",
959
"use_dbus"):
960
value = getattr(options, option)
961
if value is not None:
962
server_settings[option] = value
963
del options
964
# Now we have our good server settings in "server_settings"
965
966
# For convenience
967
debug = server_settings["debug"]
968
use_dbus = server_settings["use_dbus"]
969
970
if not debug:
971
syslogger.setLevel(logging.WARNING)
972
console.setLevel(logging.WARNING)
973
974
if server_settings["servicename"] != "Mandos":
975
syslogger.setFormatter(logging.Formatter
976
('Mandos (%s): %%(levelname)s:'
977
' %%(message)s'
978
% server_settings["servicename"]))
979
980
# Parse config file with clients
981
client_defaults = { "timeout": "1h",
982
"interval": "5m",
983
"checker": "fping -q -- %%(host)s",
984
"host": "",
985
}
986
client_config = ConfigParser.SafeConfigParser(client_defaults)
987
client_config.read(os.path.join(server_settings["configdir"],
988
"clients.conf"))
989
990
clients = Set()
991
tcp_server = IPv6_TCPServer((server_settings["address"],
992
server_settings["port"]),
993
TCP_handler,
994
settings=server_settings,
995
clients=clients)
996
pidfilename = "/var/run/mandos.pid"
997
try:
998
pidfile = open(pidfilename, "w")
999
except IOError, error:
1000
logger.error("Could not open file %r", pidfilename)
1001
1002
try:
1003
uid = pwd.getpwnam("_mandos").pw_uid
1004
gid = pwd.getpwnam("_mandos").pw_gid
1005
except KeyError:
1006
try:
1007
uid = pwd.getpwnam("mandos").pw_uid
1008
gid = pwd.getpwnam("mandos").pw_gid
1009
except KeyError:
1010
try:
1011
uid = pwd.getpwnam("nobody").pw_uid
1012
gid = pwd.getpwnam("nogroup").pw_gid
1013
except KeyError:
1014
uid = 65534
1015
gid = 65534
1016
try:
1017
os.setuid(uid)
1018
os.setgid(gid)
1019
except OSError, error:
1020
if error[0] != errno.EPERM:
1021
raise error
1022
1023
global service
1024
service = AvahiService(name = server_settings["servicename"],
1025
servicetype = "_mandos._tcp", )
1026
if server_settings["interface"]:
1027
service.interface = (if_nametoindex
1028
(server_settings["interface"]))
653
# Parse config file
654
defaults = { "timeout": "1h",
655
"interval": "5m",
656
"checker": "fping -q -- %%(fqdn)s",
657
}
658
client_config = ConfigParser.SafeConfigParser(defaults)
659
#client_config.readfp(open("global.conf"), "global.conf")
660
client_config.read("mandos-clients.conf")
661
662
global serviceName
663
serviceName = options.servicename;
1029
664
1030
665
global main_loop
1031
666
global bus
1034
669
DBusGMainLoop(set_as_default=True )
1035
670
main_loop = gobject.MainLoop()
1036
671
bus = dbus.SystemBus()
1037
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1038
avahi.DBUS_PATH_SERVER),
1039
avahi.DBUS_INTERFACE_SERVER)
672
server = dbus.Interface(
673
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
674
avahi.DBUS_INTERFACE_SERVER )
1040
675
# End of Avahi example code
1041
if use_dbus:
1042
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1043
1044
clients.update(Set(Client(name = section,
1045
config
1046
= dict(client_config.items(section)),
1047
use_dbus = use_dbus)
676
677
debug = options.debug
678
679
if debug:
680
console = logging.StreamHandler()
681
# console.setLevel(logging.DEBUG)
682
console.setFormatter(logging.Formatter\
683
('%(levelname)s: %(message)s'))
684
logger.addHandler(console)
685
del console
686
687
clients = Set()
688
def remove_from_clients(client):
689
clients.remove(client)
690
if not clients:
691
logger.debug(u"No clients left, exiting")
692
killme()
693
694
clients.update(Set(Client(name=section,
695
stop_hook = remove_from_clients,
696
**(dict(client_config\
697
.items(section))))
1048
698
for section in client_config.sections()))
1049
if not clients:
1050
logger.warning(u"No clients defined")
1051
1052
if debug:
1053
# Redirect stdin so all checkers get /dev/null
1054
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1055
os.dup2(null, sys.stdin.fileno())
1056
if null > 2:
1057
os.close(null)
1058
else:
1059
# No console logging
1060
logger.removeHandler(console)
1061
# Close all input and output, do double fork, etc.
1062
daemon()
1063
1064
try:
1065
pid = os.getpid()
1066
pidfile.write(str(pid) + "\n")
1067
pidfile.close()
1068
del pidfile
1069
except IOError:
1070
logger.error(u"Could not write to file %r with PID %d",
1071
pidfilename, pid)
1072
except NameError:
1073
# "pidfile" was never created
1074
pass
1075
del pidfilename
699
700
if not debug:
701
daemon(False, False)
1076
702
1077
703
def cleanup():
1078
704
"Cleanup function; run on exit"
1085
711
1086
712
while clients:
1087
713
client = clients.pop()
1088
client.disable_hook = None
1089
client.disable()
714
client.stop_hook = None
715
client.stop()
1090
716
1091
717
atexit.register(cleanup)
1092
718
1093
719
if not debug:
1094
720
signal.signal(signal.SIGINT, signal.SIG_IGN)
1095
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1096
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1097
1098
if use_dbus:
1099
class MandosServer(dbus.service.Object):
1100
"""A D-Bus proxy object"""
1101
def __init__(self):
1102
dbus.service.Object.__init__(self, bus, "/")
1103
_interface = u"se.bsnet.fukt.Mandos"
1104
1105
@dbus.service.signal(_interface, signature="oa{sv}")
1106
def ClientAdded(self, objpath, properties):
1107
"D-Bus signal"
1108
pass
1109
1110
@dbus.service.signal(_interface, signature="os")
1111
def ClientRemoved(self, objpath, name):
1112
"D-Bus signal"
1113
pass
1114
1115
@dbus.service.method(_interface, out_signature="ao")
1116
def GetAllClients(self):
1117
return dbus.Array(c.dbus_object_path for c in clients)
1118
1119
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1120
def GetAllClientsWithProperties(self):
1121
return dbus.Dictionary(
1122
((c.dbus_object_path, c.GetAllProperties())
1123
for c in clients),
1124
signature="oa{sv}")
1125
1126
@dbus.service.method(_interface, in_signature="o")
1127
def RemoveClient(self, object_path):
1128
for c in clients:
1129
if c.dbus_object_path == object_path:
1130
clients.remove(c)
1131
# Don't signal anything except ClientRemoved
1132
c.use_dbus = False
1133
c.disable()
1134
# Emit D-Bus signal
1135
self.ClientRemoved(object_path, c.name)
1136
return
1137
raise KeyError
1138
1139
del _interface
1140
1141
mandos_server = MandosServer()
721
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
722
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1142
723
1143
724
for client in clients:
1144
if use_dbus:
1145
# Emit D-Bus signal
1146
mandos_server.ClientAdded(client.dbus_object_path,
1147
client.GetAllProperties())
1148
client.enable()
1149
1150
tcp_server.enable()
1151
tcp_server.server_activate()
1152
1153
# Find out what port we got
1154
service.port = tcp_server.socket.getsockname()[1]
1155
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1156
u" scope_id %d" % tcp_server.socket.getsockname())
1157
1158
#service.interface = tcp_server.socket.getsockname()[3]
1159
1160
try:
1161
# From the Avahi example code
1162
server.connect_to_signal("StateChanged", server_state_changed)
1163
try:
1164
server_state_changed(server.GetState())
1165
except dbus.exceptions.DBusException, error:
1166
logger.critical(u"DBusException: %s", error)
1167
sys.exit(1)
1168
# End of Avahi example code
1169
1170
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1171
lambda *args, **kwargs:
1172
(tcp_server.handle_request
1173
(*args[2:], **kwargs) or True))
1174
1175
logger.debug(u"Starting main loop")
725
client.start()
726
727
tcp_server = IPv6_TCPServer((options.address, options.port),
728
tcp_handler,
729
options=options,
730
clients=clients)
731
# Find out what random port we got
732
global servicePort
733
servicePort = tcp_server.socket.getsockname()[1]
734
logger.debug(u"Now listening on port %d", servicePort)
735
736
if options.interface is not None:
737
global serviceInterface
738
serviceInterface = if_nametoindex(options.interface)
739
740
# From the Avahi example code
741
server.connect_to_signal("StateChanged", server_state_changed)
742
try:
743
server_state_changed(server.GetState())
744
except dbus.exceptions.DBusException, error:
745
logger.critical(u"DBusException: %s", error)
746
killme(1)
747
# End of Avahi example code
748
749
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
750
lambda *args, **kwargs:
751
tcp_server.handle_request(*args[2:],
752
**kwargs) or True)
753
try:
754
logger.debug("Starting main loop")
755
main_loop_started = True
1176
756
main_loop.run()
1177
except AvahiError, error:
1178
logger.critical(u"AvahiError: %s", error)
1179
sys.exit(1)
1180
757
except KeyboardInterrupt:
1181
758
if debug:
1182
759
print
760
761
sys.exit(exitstatus)
1183
762
1184
763
if __name__ == '__main__':
1185
764
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0