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- Committer: Teddy Hogeborn
- Date: 2008-07-22 06:25:35 UTC
- mfrom: (24.1.2 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080722062535-whz5do0b3dzw6m08
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 Teddy Hogeborn
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# Copyright © 2008 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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# GNU General Public License for more details.
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25
#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
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# <https://www.fukt.bsnet.se/~teddy/>.
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31
#
33
32
34
from __future__ import division, with_statement, absolute_import
33
from __future__ import division
35
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36
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import SocketServer
37
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import socket
37
import select
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from optparse import OptionParser
39
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import datetime
40
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import errno
55
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import stat
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import logging
57
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import logging.handlers
58
import pwd
59
from contextlib import closing
60
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import dbus
62
import dbus.service
63
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import gobject
64
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import avahi
65
62
from dbus.mainloop.glib import DBusGMainLoop
66
63
import ctypes
67
import ctypes.util
68
69
version = "1.0.2"
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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
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# server program acts as a TLS "client" while the connecting clients
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# acts as a TLS "server". The clients (acting as a TLS "server") must
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# 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
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# file at start time) which binary blob to give the client. No other
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# authentication or authorization is done by this server.
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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)
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console = logging.StreamHandler()
80
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
' %(message)s'))
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logger.addHandler(console)
83
84
class AvahiError(Exception):
85
def __init__(self, value):
86
self.value = value
87
super(AvahiError, self).__init__()
88
def __str__(self):
89
return 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'
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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.
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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("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_struct(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus struct.
175
The format is special to this application, since we could not find
176
any other standard way."""
177
return dbus.Struct((dbus.Int16(dt.year),
178
dbus.Byte(dt.month),
179
dbus.Byte(dt.day),
180
dbus.Byte(dt.hour),
181
dbus.Byte(dt.minute),
182
dbus.Byte(dt.second),
183
dbus.UInt32(dt.microsecond)),
184
signature="nyyyyyu",
185
variant_level=variant_level)
186
187
188
class Client(dbus.service.Object):
102
class Client(object):
189
103
"""A representation of a client host served by this server.
190
104
Attributes:
191
name: string; from the config file, used in log messages
105
name: string; from the config file, used in log messages
192
106
fingerprint: string (40 or 32 hexadecimal digits); used to
193
107
uniquely identify the client
194
secret: bytestring; sent verbatim (over TLS) to client
195
host: string; available for use by the checker command
196
created: datetime.datetime(); (UTC) object creation
197
last_started: datetime.datetime(); (UTC)
198
started: bool()
199
last_checked_ok: datetime.datetime(); (UTC) or None
200
timeout: datetime.timedelta(); How long from last_checked_ok
201
until this client is invalid
202
interval: datetime.timedelta(); How often to start a new checker
203
stop_hook: If set, called by stop() as stop_hook(self)
204
checker: subprocess.Popen(); a running checker process used
205
to see if the client lives.
206
'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.
207
119
checker_initiator_tag: a gobject event source tag, or None
208
120
stop_initiator_tag: - '' -
209
121
checker_callback_tag: - '' -
210
122
checker_command: string; External command which is run to check if
211
client lives. %() expansions are done at
123
client lives. %()s expansions are done at
212
124
runtime with vars(self) as dict, so that for
213
125
instance %(name)s can be used in the command.
214
dbus_object_path: dbus.ObjectPath
215
126
Private attibutes:
216
127
_timeout: Real variable for 'timeout'
217
128
_interval: Real variable for 'interval'
218
_timeout_milliseconds: Used when calling gobject.timeout_add()
129
_timeout_milliseconds: Used by gobject.timeout_add()
219
130
_interval_milliseconds: - '' -
220
131
"""
221
132
def _set_timeout(self, timeout):
222
"Setter function for the 'timeout' attribute"
133
"Setter function for 'timeout' attribute"
223
134
self._timeout = timeout
224
135
self._timeout_milliseconds = ((self.timeout.days
225
136
* 24 * 60 * 60 * 1000)
226
137
+ (self.timeout.seconds * 1000)
227
138
+ (self.timeout.microseconds
228
139
// 1000))
229
# Emit D-Bus signal
230
self.PropertyChanged(dbus.String(u"timeout"),
231
(dbus.UInt64(self._timeout_milliseconds,
232
variant_level=1)))
233
timeout = property(lambda self: self._timeout, _set_timeout)
140
timeout = property(lambda self: self._timeout,
141
_set_timeout)
234
142
del _set_timeout
235
236
143
def _set_interval(self, interval):
237
"Setter function for the 'interval' attribute"
144
"Setter function for 'interval' attribute"
238
145
self._interval = interval
239
146
self._interval_milliseconds = ((self.interval.days
240
147
* 24 * 60 * 60 * 1000)
242
149
* 1000)
243
150
+ (self.interval.microseconds
244
151
// 1000))
245
# Emit D-Bus signal
246
self.PropertyChanged(dbus.String(u"interval"),
247
(dbus.UInt64(self._interval_milliseconds,
248
variant_level=1)))
249
interval = property(lambda self: self._interval, _set_interval)
152
interval = property(lambda self: self._interval,
153
_set_interval)
250
154
del _set_interval
251
252
def __init__(self, name = None, stop_hook=None, config=None):
253
"""Note: the 'checker' key in 'config' sets the
254
'checker_command' attribute and *not* the 'checker'
255
attribute."""
256
self.dbus_object_path = (dbus.ObjectPath
257
("/Mandos/clients/"
258
+ name.replace(".", "_")))
259
dbus.service.Object.__init__(self, bus,
260
self.dbus_object_path)
261
if config is None:
262
config = {}
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.."""
263
160
self.name = name
264
161
logger.debug(u"Creating client %r", self.name)
265
# Uppercase and remove spaces from fingerprint for later
266
# comparison purposes with return value from the fingerprint()
267
# function
268
self.fingerprint = (config["fingerprint"].upper()
269
.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"")
270
166
logger.debug(u" Fingerprint: %s", self.fingerprint)
271
if "secret" in config:
272
self.secret = config["secret"].decode(u"base64")
273
elif "secfile" in config:
274
with closing(open(os.path.expanduser
275
(os.path.expandvars
276
(config["secfile"])))) as secfile:
277
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()
278
173
else:
279
raise TypeError(u"No secret or secfile for client %s"
280
% self.name)
281
self.host = config.get("host", "")
282
self.created = datetime.datetime.utcnow()
283
self.started = False
284
self.last_started = None
285
self.last_checked_ok = None
286
self.timeout = string_to_delta(config["timeout"])
287
self.interval = string_to_delta(config["interval"])
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)
288
181
self.stop_hook = stop_hook
289
182
self.checker = None
290
183
self.checker_initiator_tag = None
291
184
self.stop_initiator_tag = None
292
185
self.checker_callback_tag = None
293
self.checker_command = config["checker"]
294
186
self.check_command = checker
295
187
def start(self):
296
188
"""Start this client's checker and timeout hooks"""
297
self.last_started = datetime.datetime.utcnow()
298
189
# Schedule a new checker to be started an 'interval' from now,
299
190
# and every interval from then on.
300
self.checker_initiator_tag = (gobject.timeout_add
301
(self._interval_milliseconds,
302
self.start_checker))
191
self.checker_initiator_tag = gobject.timeout_add\
192
(self._interval_milliseconds,
193
self.start_checker)
303
194
# Also start a new checker *right now*.
304
195
self.start_checker()
305
196
# Schedule a stop() when 'timeout' has passed
306
self.stop_initiator_tag = (gobject.timeout_add
307
(self._timeout_milliseconds,
308
self.stop))
309
self.started = True
310
# Emit D-Bus signal
311
self.PropertyChanged(dbus.String(u"started"),
312
dbus.Boolean(True, variant_level=1))
313
self.PropertyChanged(dbus.String(u"last_started"),
314
(_datetime_to_dbus_struct
315
(self.last_started, variant_level=1)))
316
197
self.stop_initiator_tag = gobject.timeout_add\
198
(self._timeout_milliseconds,
199
self.stop)
317
200
def stop(self):
318
"""Stop this client."""
319
if not getattr(self, "started", False):
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:
320
209
return False
321
logger.info(u"Stopping client %s", self.name)
322
if getattr(self, "stop_initiator_tag", False):
210
if hasattr(self, "stop_initiator_tag") \
211
and self.stop_initiator_tag:
323
212
gobject.source_remove(self.stop_initiator_tag)
324
213
self.stop_initiator_tag = None
325
if getattr(self, "checker_initiator_tag", False):
214
if hasattr(self, "checker_initiator_tag") \
215
and self.checker_initiator_tag:
326
216
gobject.source_remove(self.checker_initiator_tag)
327
217
self.checker_initiator_tag = None
328
218
self.stop_checker()
329
219
if self.stop_hook:
330
220
self.stop_hook(self)
331
self.started = False
332
# Emit D-Bus signal
333
self.PropertyChanged(dbus.String(u"started"),
334
dbus.Boolean(False, variant_level=1))
335
221
# Do not run this again if called by a gobject.timeout_add
336
222
return False
337
338
223
def __del__(self):
339
224
self.stop_hook = None
340
225
self.stop()
341
342
def checker_callback(self, pid, condition, command):
226
def checker_callback(self, pid, condition):
343
227
"""The checker has completed, so take appropriate actions."""
228
now = datetime.datetime.now()
344
229
self.checker_callback_tag = None
345
230
self.checker = None
346
# Emit D-Bus signal
347
self.PropertyChanged(dbus.String(u"checker_running"),
348
dbus.Boolean(False, variant_level=1))
349
if (os.WIFEXITED(condition)
350
and (os.WEXITSTATUS(condition) == 0)):
351
logger.info(u"Checker for %(name)s succeeded",
352
vars(self))
353
# Emit D-Bus signal
354
self.CheckerCompleted(dbus.Boolean(True),
355
dbus.UInt16(condition),
356
dbus.String(command))
357
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)
358
240
elif not os.WIFEXITED(condition):
359
241
logger.warning(u"Checker for %(name)s crashed?",
360
242
vars(self))
361
# Emit D-Bus signal
362
self.CheckerCompleted(dbus.Boolean(False),
363
dbus.UInt16(condition),
364
dbus.String(command))
365
243
else:
366
logger.info(u"Checker for %(name)s failed",
367
vars(self))
368
# Emit D-Bus signal
369
self.CheckerCompleted(dbus.Boolean(False),
370
dbus.UInt16(condition),
371
dbus.String(command))
372
373
def bump_timeout(self):
374
"""Bump up the timeout for this client.
375
This should only be called when the client has been seen,
376
alive and well.
377
"""
378
self.last_checked_ok = datetime.datetime.utcnow()
379
gobject.source_remove(self.stop_initiator_tag)
380
self.stop_initiator_tag = (gobject.timeout_add
381
(self._timeout_milliseconds,
382
self.stop))
383
self.PropertyChanged(dbus.String(u"last_checked_ok"),
384
(_datetime_to_dbus_struct
385
(self.last_checked_ok,
386
variant_level=1)))
387
244
logger.debug(u"Checker for %(name)s failed",
245
vars(self))
388
246
def start_checker(self):
389
247
"""Start a new checker subprocess if one is not running.
390
248
If a checker already exists, leave it running and do
399
257
# is as it should be.
400
258
if self.checker is None:
401
259
try:
402
# In case checker_command has exactly one % operator
403
command = self.checker_command % self.host
260
command = self.check_command % self.fqdn
404
261
except TypeError:
405
# Escape attributes for the shell
406
262
escaped_attrs = dict((key, re.escape(str(val)))
407
263
for key, val in
408
264
vars(self).iteritems())
409
265
try:
410
command = self.checker_command % escaped_attrs
266
command = self.check_command % escaped_attrs
411
267
except TypeError, error:
412
logger.error(u'Could not format string "%s":'
413
u' %s', self.checker_command, error)
268
logger.critical(u'Could not format string "%s":'
269
u' %s', self.check_command, error)
414
270
return True # Try again later
415
271
try:
416
logger.info(u"Starting checker %r for %s",
417
command, self.name)
418
# We don't need to redirect stdout and stderr, since
419
# in normal mode, that is already done by daemon(),
420
# and in debug mode we don't want to. (Stdin is
421
# always replaced by /dev/null.)
422
self.checker = subprocess.Popen(command,
423
close_fds=True,
424
shell=True, cwd="/")
425
# Emit D-Bus signal
426
self.CheckerStarted(command)
427
self.PropertyChanged(dbus.String("checker_running"),
428
dbus.Boolean(True, variant_level=1))
429
self.checker_callback_tag = (gobject.child_watch_add
430
(self.checker.pid,
431
self.checker_callback,
432
data=command))
433
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:
434
282
logger.error(u"Failed to start subprocess: %s",
435
283
error)
436
284
# Re-run this periodically if run by gobject.timeout_add
437
285
return True
438
439
286
def stop_checker(self):
440
287
"""Force the checker process, if any, to stop."""
441
288
if self.checker_callback_tag:
442
289
gobject.source_remove(self.checker_callback_tag)
443
290
self.checker_callback_tag = None
444
if getattr(self, "checker", None) is None:
291
if not hasattr(self, "checker") or self.checker is None:
445
292
return
446
logger.debug(u"Stopping checker for %(name)s", vars(self))
293
logger.debug("Stopping checker for %(name)s", vars(self))
447
294
try:
448
295
os.kill(self.checker.pid, signal.SIGTERM)
449
296
#os.sleep(0.5)
450
297
#if self.checker.poll() is None:
451
298
# os.kill(self.checker.pid, signal.SIGKILL)
452
299
except OSError, error:
453
if error.errno != errno.ESRCH: # No such process
300
if error.errno != errno.ESRCH:
454
301
raise
455
302
self.checker = None
456
self.PropertyChanged(dbus.String(u"checker_running"),
457
dbus.Boolean(False, variant_level=1))
458
459
def still_valid(self):
303
def still_valid(self, now=None):
460
304
"""Has the timeout not yet passed for this client?"""
461
if not getattr(self, "started", False):
462
return False
463
now = datetime.datetime.utcnow()
464
if self.last_checked_ok is None:
305
if now is None:
306
now = datetime.datetime.now()
307
if self.last_seen is None:
465
308
return now < (self.created + self.timeout)
466
309
else:
467
return now < (self.last_checked_ok + self.timeout)
468
469
## D-Bus methods & signals
470
_interface = u"org.mandos_system.Mandos.Client"
471
472
# BumpTimeout - method
473
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
474
BumpTimeout.__name__ = "BumpTimeout"
475
476
# CheckerCompleted - signal
477
@dbus.service.signal(_interface, signature="bqs")
478
def CheckerCompleted(self, success, condition, command):
479
"D-Bus signal"
480
pass
481
482
# CheckerStarted - signal
483
@dbus.service.signal(_interface, signature="s")
484
def CheckerStarted(self, command):
485
"D-Bus signal"
486
pass
487
488
# GetAllProperties - method
489
@dbus.service.method(_interface, out_signature="a{sv}")
490
def GetAllProperties(self):
491
"D-Bus method"
492
return dbus.Dictionary({
493
dbus.String("name"):
494
dbus.String(self.name, variant_level=1),
495
dbus.String("fingerprint"):
496
dbus.String(self.fingerprint, variant_level=1),
497
dbus.String("host"):
498
dbus.String(self.host, variant_level=1),
499
dbus.String("created"):
500
_datetime_to_dbus_struct(self.created,
501
variant_level=1),
502
dbus.String("last_started"):
503
(_datetime_to_dbus_struct(self.last_started,
504
variant_level=1)
505
if self.last_started is not None
506
else dbus.Boolean(False, variant_level=1)),
507
dbus.String("started"):
508
dbus.Boolean(self.started, variant_level=1),
509
dbus.String("last_checked_ok"):
510
(_datetime_to_dbus_struct(self.last_checked_ok,
511
variant_level=1)
512
if self.last_checked_ok is not None
513
else dbus.Boolean (False, variant_level=1)),
514
dbus.String("timeout"):
515
dbus.UInt64(self._timeout_milliseconds,
516
variant_level=1),
517
dbus.String("interval"):
518
dbus.UInt64(self._interval_milliseconds,
519
variant_level=1),
520
dbus.String("checker"):
521
dbus.String(self.checker_command,
522
variant_level=1),
523
dbus.String("checker_running"):
524
dbus.Boolean(self.checker is not None,
525
variant_level=1),
526
}, signature="sv")
527
528
# IsStillValid - method
529
IsStillValid = (dbus.service.method(_interface, out_signature="b")
530
(still_valid))
531
IsStillValid.__name__ = "IsStillValid"
532
533
# PropertyChanged - signal
534
@dbus.service.signal(_interface, signature="sv")
535
def PropertyChanged(self, property, value):
536
"D-Bus signal"
537
pass
538
539
# SetChecker - method
540
@dbus.service.method(_interface, in_signature="s")
541
def SetChecker(self, checker):
542
"D-Bus setter method"
543
self.checker_command = checker
544
545
# SetHost - method
546
@dbus.service.method(_interface, in_signature="s")
547
def SetHost(self, host):
548
"D-Bus setter method"
549
self.host = host
550
551
# SetInterval - method
552
@dbus.service.method(_interface, in_signature="t")
553
def SetInterval(self, milliseconds):
554
self.interval = datetime.timdeelta(0, 0, 0, milliseconds)
555
556
# SetSecret - method
557
@dbus.service.method(_interface, in_signature="ay",
558
byte_arrays=True)
559
def SetSecret(self, secret):
560
"D-Bus setter method"
561
self.secret = str(secret)
562
563
# SetTimeout - method
564
@dbus.service.method(_interface, in_signature="t")
565
def SetTimeout(self, milliseconds):
566
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
567
568
# Start - method
569
Start = dbus.service.method(_interface)(start)
570
Start.__name__ = "Start"
571
572
# StartChecker - method
573
@dbus.service.method(_interface)
574
def StartChecker(self):
575
"D-Bus method"
576
self.start_checker()
577
578
# Stop - method
579
@dbus.service.method(_interface)
580
def Stop(self):
581
"D-Bus method"
582
self.stop()
583
584
# StopChecker - method
585
StopChecker = dbus.service.method(_interface)(stop_checker)
586
StopChecker.__name__ = "StopChecker"
587
588
del _interface
310
return now < (self.last_seen + self.timeout)
589
311
590
312
591
313
def peer_certificate(session):
592
314
"Return the peer's OpenPGP certificate as a bytestring"
593
315
# If not an OpenPGP certificate...
594
if (gnutls.library.functions
595
.gnutls_certificate_type_get(session._c_object)
596
!= 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:
597
319
# ...do the normal thing
598
320
return session.peer_certificate
599
321
list_size = ctypes.c_uint()
600
cert_list = (gnutls.library.functions
601
.gnutls_certificate_get_peers
602
(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))
603
324
if list_size.value == 0:
604
325
return None
605
326
cert = cert_list[0]
608
329
609
330
def fingerprint(openpgp):
610
331
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
611
# New GnuTLS "datum" with the OpenPGP public key
612
datum = (gnutls.library.types
613
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
614
ctypes.POINTER
615
(ctypes.c_ubyte)),
616
ctypes.c_uint(len(openpgp))))
617
332
# New empty GnuTLS certificate
618
333
crt = gnutls.library.types.gnutls_openpgp_crt_t()
619
(gnutls.library.functions
620
.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)))
621
341
# Import the OpenPGP public key into the certificate
622
(gnutls.library.functions
623
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
624
gnutls.library.constants
625
.GNUTLS_OPENPGP_FMT_RAW))
626
# Verify the self signature in the key
627
crtverify = ctypes.c_uint()
628
(gnutls.library.functions
629
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
630
if crtverify.value != 0:
631
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
632
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)
633
346
# New buffer for the fingerprint
634
buf = ctypes.create_string_buffer(20)
635
buf_len = ctypes.c_size_t()
347
buffer = ctypes.create_string_buffer(20)
348
buffer_length = ctypes.c_size_t()
636
349
# Get the fingerprint from the certificate into the buffer
637
(gnutls.library.functions
638
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
639
ctypes.byref(buf_len)))
350
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
351
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
640
352
# Deinit the certificate
641
353
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
642
354
# Convert the buffer to a Python bytestring
643
fpr = ctypes.string_at(buf, buf_len.value)
355
fpr = ctypes.string_at(buffer, buffer_length.value)
644
356
# Convert the bytestring to hexadecimal notation
645
357
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
646
358
return hex_fpr
647
359
648
360
649
class TCP_handler(SocketServer.BaseRequestHandler, object):
361
class tcp_handler(SocketServer.BaseRequestHandler, object):
650
362
"""A TCP request handler class.
651
363
Instantiated by IPv6_TCPServer for each request to handle it.
652
364
Note: This will run in its own forked process."""
653
365
654
366
def handle(self):
655
logger.info(u"TCP connection from: %s",
656
unicode(self.client_address))
657
session = (gnutls.connection
658
.ClientSession(self.request,
659
gnutls.connection
660
.X509Credentials()))
661
662
line = self.request.makefile().readline()
663
logger.debug(u"Protocol version: %r", line)
664
try:
665
if int(line.strip().split()[0]) > 1:
666
raise RuntimeError
667
except (ValueError, IndexError, RuntimeError), error:
668
logger.error(u"Unknown protocol version: %s", error)
669
return
670
671
# Note: gnutls.connection.X509Credentials is really a generic
672
# GnuTLS certificate credentials object so long as no X.509
673
# keys are added to it. Therefore, we can use it here despite
674
# 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())
675
372
676
373
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
677
374
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
678
375
# "+DHE-DSS"))
679
# Use a fallback default, since this MUST be set.
680
priority = self.server.settings.get("priority", "NORMAL")
681
(gnutls.library.functions
682
.gnutls_priority_set_direct(session._c_object,
683
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);
684
381
685
382
try:
686
383
session.handshake()
687
384
except gnutls.errors.GNUTLSError, error:
688
logger.warning(u"Handshake failed: %s", error)
385
logger.debug(u"Handshake failed: %s", error)
689
386
# Do not run session.bye() here: the session is not
690
387
# established. Just abandon the request.
691
388
return
692
389
try:
693
390
fpr = fingerprint(peer_certificate(session))
694
391
except (TypeError, gnutls.errors.GNUTLSError), error:
695
logger.warning(u"Bad certificate: %s", error)
392
logger.debug(u"Bad certificate: %s", error)
696
393
session.bye()
697
394
return
698
395
logger.debug(u"Fingerprint: %s", fpr)
396
client = None
699
397
for c in self.server.clients:
700
398
if c.fingerprint == fpr:
701
399
client = c
702
400
break
703
else:
704
logger.warning(u"Client not found for fingerprint: %s",
705
fpr)
706
session.bye()
707
return
708
401
# Have to check if client.still_valid(), since it is possible
709
402
# that the client timed out while establishing the GnuTLS
710
403
# session.
711
if not client.still_valid():
712
logger.warning(u"Client %(name)s is invalid",
713
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)
714
411
session.bye()
715
412
return
716
## This won't work here, since we're in a fork.
717
# client.bump_timeout()
718
413
sent_size = 0
719
414
while sent_size < len(client.secret):
720
415
sent = session.send(client.secret[sent_size:])
725
420
session.bye()
726
421
727
422
728
class IPv6_TCPServer(SocketServer.ForkingMixIn,
729
SocketServer.TCPServer, object):
423
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
730
424
"""IPv6 TCP server. Accepts 'None' as address and/or port.
731
425
Attributes:
732
settings: Server settings
426
options: Command line options
733
427
clients: Set() of Client objects
734
enabled: Boolean; whether this server is activated yet
735
428
"""
736
429
address_family = socket.AF_INET6
737
430
def __init__(self, *args, **kwargs):
738
if "settings" in kwargs:
739
self.settings = kwargs["settings"]
740
del kwargs["settings"]
431
if "options" in kwargs:
432
self.options = kwargs["options"]
433
del kwargs["options"]
741
434
if "clients" in kwargs:
742
435
self.clients = kwargs["clients"]
743
436
del kwargs["clients"]
744
self.enabled = False
745
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
437
return super(type(self), self).__init__(*args, **kwargs)
746
438
def server_bind(self):
747
439
"""This overrides the normal server_bind() function
748
440
to bind to an interface if one was specified, and also NOT to
749
441
bind to an address or port if they were not specified."""
750
if self.settings["interface"]:
751
# 25 is from /usr/include/asm-i486/socket.h
752
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
753
446
try:
754
447
self.socket.setsockopt(socket.SOL_SOCKET,
755
SO_BINDTODEVICE,
756
self.settings["interface"])
448
socket.SO_BINDTODEVICE,
449
self.options.interface)
757
450
except socket.error, error:
758
451
if error[0] == errno.EPERM:
759
logger.error(u"No permission to"
760
u" bind to interface %s",
761
self.settings["interface"])
452
logger.warning(u"No permission to"
453
u" bind to interface %s",
454
self.options.interface)
762
455
else:
763
456
raise error
764
457
# Only bind(2) the socket if we really need to.
767
460
in6addr_any = "::"
768
461
self.server_address = (in6addr_any,
769
462
self.server_address[1])
770
elif not self.server_address[1]:
463
elif self.server_address[1] is None:
771
464
self.server_address = (self.server_address[0],
772
465
0)
773
# if self.settings["interface"]:
774
# self.server_address = (self.server_address[0],
775
# 0, # port
776
# 0, # flowinfo
777
# if_nametoindex
778
# (self.settings
779
# ["interface"]))
780
return super(IPv6_TCPServer, self).server_bind()
781
def server_activate(self):
782
if self.enabled:
783
return super(IPv6_TCPServer, self).server_activate()
784
def enable(self):
785
self.enabled = True
466
return super(type(self), self).server_bind()
786
467
787
468
788
469
def string_to_delta(interval):
798
479
datetime.timedelta(1)
799
480
>>> string_to_delta(u'1w')
800
481
datetime.timedelta(7)
801
>>> string_to_delta('5m 30s')
802
datetime.timedelta(0, 330)
803
482
"""
804
timevalue = datetime.timedelta(0)
805
for s in interval.split():
806
try:
807
suffix = unicode(s[-1])
808
value = int(s[:-1])
809
if suffix == u"d":
810
delta = datetime.timedelta(value)
811
elif suffix == u"s":
812
delta = datetime.timedelta(0, value)
813
elif suffix == u"m":
814
delta = datetime.timedelta(0, 0, 0, 0, value)
815
elif suffix == u"h":
816
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
817
elif suffix == u"w":
818
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
819
else:
820
raise ValueError
821
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:
822
497
raise ValueError
823
timevalue += delta
824
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()
825
534
826
535
827
536
def server_state_changed(state):
828
537
"""Derived from the Avahi example code"""
829
538
if state == avahi.SERVER_COLLISION:
830
logger.error(u"Zeroconf server name collision")
831
service.remove()
539
logger.warning(u"Server name collision")
540
remove_service()
832
541
elif state == avahi.SERVER_RUNNING:
833
service.add()
542
add_service()
834
543
835
544
836
545
def entry_group_state_changed(state, error):
837
546
"""Derived from the Avahi example code"""
838
logger.debug(u"Avahi state change: %i", state)
547
global serviceName, server, rename_count
548
549
logger.debug(u"state change: %i", state)
839
550
840
551
if state == avahi.ENTRY_GROUP_ESTABLISHED:
841
logger.debug(u"Zeroconf service established.")
552
logger.debug(u"Service established.")
842
553
elif state == avahi.ENTRY_GROUP_COLLISION:
843
logger.warning(u"Zeroconf service name collision.")
844
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)
845
567
elif state == avahi.ENTRY_GROUP_FAILURE:
846
logger.critical(u"Avahi: Error in group state changed %s",
847
unicode(error))
848
raise AvahiGroupError("State changed: %s", str(error))
568
logger.error(u"Error in group state changed %s",
569
unicode(error))
570
killme(1)
571
849
572
850
573
def if_nametoindex(interface):
851
"""Call the C function if_nametoindex(), or equivalent"""
852
global if_nametoindex
574
"""Call the C function if_nametoindex()"""
853
575
try:
854
if_nametoindex = (ctypes.cdll.LoadLibrary
855
(ctypes.util.find_library("c"))
856
.if_nametoindex)
576
libc = ctypes.cdll.LoadLibrary("libc.so.6")
577
return libc.if_nametoindex(interface)
857
578
except (OSError, AttributeError):
858
579
if "struct" not in sys.modules:
859
580
import struct
860
581
if "fcntl" not in sys.modules:
861
582
import fcntl
862
def if_nametoindex(interface):
863
"Get an interface index the hard way, i.e. using fcntl()"
864
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
865
with closing(socket.socket()) as s:
866
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
867
struct.pack("16s16x", interface))
868
interface_index = struct.unpack("I", ifreq[16:20])[0]
869
return interface_index
870
return if_nametoindex(interface)
871
872
873
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):
874
593
"""See daemon(3). Standard BSD Unix function.
875
594
This should really exist as os.daemon, but it doesn't (yet)."""
876
595
if os.fork():
878
597
os.setsid()
879
598
if not nochdir:
880
599
os.chdir("/")
881
if os.fork():
882
sys.exit()
883
600
if not noclose:
884
601
# Close all standard open file descriptors
885
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
602
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
886
603
if not stat.S_ISCHR(os.fstat(null).st_mode):
887
604
raise OSError(errno.ENODEV,
888
605
"/dev/null not a character device")
893
610
os.close(null)
894
611
895
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
896
622
def main():
897
parser = 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()
898
629
parser.add_option("-i", "--interface", type="string",
899
metavar="IF", help="Bind to interface IF")
900
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,
901
633
help="Address to listen for requests on")
902
parser.add_option("-p", "--port", type="int",
634
parser.add_option("-p", "--port", type="int", default=None,
903
635
help="Port number to receive requests on")
904
636
parser.add_option("--check", action="store_true", default=False,
905
637
help="Run self-test")
906
parser.add_option("--debug", action="store_true",
907
help="Debug mode; run in foreground and log to"
908
" terminal")
909
parser.add_option("--priority", type="string", help="GnuTLS"
910
" priority string (see GnuTLS documentation)")
911
parser.add_option("--servicename", type="string", metavar="NAME",
912
help="Zeroconf service name")
913
parser.add_option("--configdir", type="string",
914
default="/etc/mandos", metavar="DIR",
915
help="Directory to search for configuration"
916
" files")
917
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()
918
647
919
648
if options.check:
920
649
import doctest
921
650
doctest.testmod()
922
651
sys.exit()
923
652
924
# Default values for config file for server-global settings
925
server_defaults = { "interface": "",
926
"address": "",
927
"port": "",
928
"debug": "False",
929
"priority":
930
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
931
"servicename": "Mandos",
932
}
933
934
# Parse config file for server-global settings
935
server_config = ConfigParser.SafeConfigParser(server_defaults)
936
del server_defaults
937
server_config.read(os.path.join(options.configdir, "mandos.conf"))
938
# Convert the SafeConfigParser object to a dict
939
server_settings = server_config.defaults()
940
# Use getboolean on the boolean config option
941
server_settings["debug"] = (server_config.getboolean
942
("DEFAULT", "debug"))
943
del server_config
944
945
# Override the settings from the config file with command line
946
# options, if set.
947
for option in ("interface", "address", "port", "debug",
948
"priority", "servicename", "configdir"):
949
value = getattr(options, option)
950
if value is not None:
951
server_settings[option] = value
952
del options
953
# Now we have our good server settings in "server_settings"
954
955
debug = server_settings["debug"]
956
957
if not debug:
958
syslogger.setLevel(logging.WARNING)
959
console.setLevel(logging.WARNING)
960
961
if server_settings["servicename"] != "Mandos":
962
syslogger.setFormatter(logging.Formatter
963
('Mandos (%s): %%(levelname)s:'
964
' %%(message)s'
965
% server_settings["servicename"]))
966
967
# Parse config file with clients
968
client_defaults = { "timeout": "1h",
969
"interval": "5m",
970
"checker": "fping -q -- %(host)s",
971
"host": "",
972
}
973
client_config = ConfigParser.SafeConfigParser(client_defaults)
974
client_config.read(os.path.join(server_settings["configdir"],
975
"clients.conf"))
976
977
clients = Set()
978
tcp_server = IPv6_TCPServer((server_settings["address"],
979
server_settings["port"]),
980
TCP_handler,
981
settings=server_settings,
982
clients=clients)
983
pidfilename = "/var/run/mandos.pid"
984
try:
985
pidfile = open(pidfilename, "w")
986
except IOError, error:
987
logger.error("Could not open file %r", pidfilename)
988
989
try:
990
uid = pwd.getpwnam("_mandos").pw_uid
991
except KeyError:
992
try:
993
uid = pwd.getpwnam("mandos").pw_uid
994
except KeyError:
995
try:
996
uid = pwd.getpwnam("nobody").pw_uid
997
except KeyError:
998
uid = 65534
999
try:
1000
gid = pwd.getpwnam("_mandos").pw_gid
1001
except KeyError:
1002
try:
1003
gid = pwd.getpwnam("mandos").pw_gid
1004
except KeyError:
1005
try:
1006
gid = pwd.getpwnam("nogroup").pw_gid
1007
except KeyError:
1008
gid = 65534
1009
try:
1010
os.setuid(uid)
1011
os.setgid(gid)
1012
except OSError, error:
1013
if error[0] != errno.EPERM:
1014
raise error
1015
1016
global service
1017
service = AvahiService(name = server_settings["servicename"],
1018
servicetype = "_mandos._tcp", )
1019
if server_settings["interface"]:
1020
service.interface = (if_nametoindex
1021
(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;
1022
664
1023
665
global main_loop
1024
666
global bus
1027
669
DBusGMainLoop(set_as_default=True )
1028
670
main_loop = gobject.MainLoop()
1029
671
bus = dbus.SystemBus()
1030
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1031
avahi.DBUS_PATH_SERVER),
1032
avahi.DBUS_INTERFACE_SERVER)
672
server = dbus.Interface(
673
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
674
avahi.DBUS_INTERFACE_SERVER )
1033
675
# End of Avahi example code
1034
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos", bus)
1035
1036
clients.update(Set(Client(name = section,
1037
config
1038
= dict(client_config.items(section)))
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))))
1039
698
for section in client_config.sections()))
1040
if not clients:
1041
logger.critical(u"No clients defined")
1042
sys.exit(1)
1043
1044
if debug:
1045
# Redirect stdin so all checkers get /dev/null
1046
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1047
os.dup2(null, sys.stdin.fileno())
1048
if null > 2:
1049
os.close(null)
1050
else:
1051
# No console logging
1052
logger.removeHandler(console)
1053
# Close all input and output, do double fork, etc.
1054
daemon()
1055
1056
try:
1057
pid = os.getpid()
1058
pidfile.write(str(pid) + "\n")
1059
pidfile.close()
1060
del pidfile
1061
except IOError:
1062
logger.error(u"Could not write to file %r with PID %d",
1063
pidfilename, pid)
1064
except NameError:
1065
# "pidfile" was never created
1066
pass
1067
del pidfilename
699
700
if not debug:
701
daemon(False, False)
1068
702
1069
703
def cleanup():
1070
704
"Cleanup function; run on exit"
1084
718
1085
719
if not debug:
1086
720
signal.signal(signal.SIGINT, signal.SIG_IGN)
1087
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1088
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1089
1090
class MandosServer(dbus.service.Object):
1091
"""A D-Bus proxy object"""
1092
def __init__(self):
1093
dbus.service.Object.__init__(self, bus,
1094
"/Mandos")
1095
_interface = u"org.mandos_system.Mandos"
1096
1097
@dbus.service.signal(_interface, signature="oa{sv}")
1098
def ClientAdded(self, objpath, properties):
1099
"D-Bus signal"
1100
pass
1101
1102
@dbus.service.signal(_interface, signature="o")
1103
def ClientRemoved(self, objpath):
1104
"D-Bus signal"
1105
pass
1106
1107
@dbus.service.method(_interface, out_signature="ao")
1108
def GetAllClients(self):
1109
return dbus.Array(c.dbus_object_path for c in clients)
1110
1111
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1112
def GetAllClientsWithProperties(self):
1113
return dbus.Dictionary(
1114
((c.dbus_object_path, c.GetAllProperties())
1115
for c in clients),
1116
signature="oa{sv}")
1117
1118
@dbus.service.method(_interface, in_signature="o")
1119
def RemoveClient(self, object_path):
1120
for c in clients:
1121
if c.dbus_object_path == object_path:
1122
c.stop()
1123
clients.remove(c)
1124
return
1125
raise KeyError
1126
1127
del _interface
1128
1129
mandos_server = MandosServer()
721
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
722
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1130
723
1131
724
for client in clients:
1132
# Emit D-Bus signal
1133
mandos_server.ClientAdded(client.dbus_object_path,
1134
client.GetAllProperties())
1135
725
client.start()
1136
726
1137
tcp_server.enable()
1138
tcp_server.server_activate()
1139
1140
# Find out what port we got
1141
service.port = tcp_server.socket.getsockname()[1]
1142
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1143
u" scope_id %d" % tcp_server.socket.getsockname())
1144
1145
#service.interface = tcp_server.socket.getsockname()[3]
1146
1147
try:
1148
# From the Avahi example code
1149
server.connect_to_signal("StateChanged", server_state_changed)
1150
try:
1151
server_state_changed(server.GetState())
1152
except dbus.exceptions.DBusException, error:
1153
logger.critical(u"DBusException: %s", error)
1154
sys.exit(1)
1155
# End of Avahi example code
1156
1157
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1158
lambda *args, **kwargs:
1159
(tcp_server.handle_request
1160
(*args[2:], **kwargs) or True))
1161
1162
logger.debug(u"Starting main loop")
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
1163
756
main_loop.run()
1164
except AvahiError, error:
1165
logger.critical(u"AvahiError: %s" + unicode(error))
1166
sys.exit(1)
1167
757
except KeyboardInterrupt:
1168
758
if debug:
1169
759
print
760
761
sys.exit(exitstatus)
1170
762
1171
763
if __name__ == '__main__':
1172
764
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0