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- Committer: Teddy Hogeborn
- Date: 2008-07-21 04:42:08 UTC
- mfrom: (15.1.3 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080721044208-y8v1sjmvalfiehrv
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
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# <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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#
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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
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import SocketServer
37
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import socket
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import select
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from optparse import OptionParser
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import datetime
40
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import errno
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import stat
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import logging
57
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import logging.handlers
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import pwd
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from contextlib import closing
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import dbus
62
import dbus.service
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import gobject
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import avahi
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
67
import ctypes.util
68
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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
70
# 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')
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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)
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syslogger.setFormatter(logging.Formatter\
81
('%(levelname)s: %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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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
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class AvahiService(object):
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"""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.
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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
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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
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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 = "Mandos"
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, options=None, stop_hook=None,
156
fingerprint=None, secret=None, secfile=None,
157
fqdn=None, timeout=None, 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
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""))
270
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()
278
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"])
161
# Uppercase and remove spaces from fingerprint
162
# for later comparison purposes with return value of
163
# the fingerprint() function
164
self.fingerprint = fingerprint.upper().replace(u" ", u"")
165
if secret:
166
self.secret = secret.decode(u"base64")
167
elif secfile:
168
sf = open(secfile)
169
self.secret = sf.read()
170
sf.close()
171
else:
172
raise RuntimeError(u"No secret or secfile for client %s"
173
% self.name)
174
self.fqdn = fqdn # string
175
self.created = datetime.datetime.now()
176
self.last_seen = None
177
if timeout is None:
178
self.timeout = options.timeout
179
else:
180
self.timeout = string_to_delta(timeout)
181
if interval == -1:
182
self.interval = options.interval
183
else:
184
self.interval = string_to_delta(interval)
288
185
self.stop_hook = stop_hook
289
186
self.checker = None
290
187
self.checker_initiator_tag = None
291
188
self.stop_initiator_tag = None
292
189
self.checker_callback_tag = None
293
self.checker_command = config["checker"]
294
190
self.check_command = checker
295
191
def start(self):
296
192
"""Start this client's checker and timeout hooks"""
297
self.last_started = datetime.datetime.utcnow()
298
193
# Schedule a new checker to be started an 'interval' from now,
299
194
# and every interval from then on.
300
self.checker_initiator_tag = (gobject.timeout_add
301
(self._interval_milliseconds,
302
self.start_checker))
195
self.checker_initiator_tag = gobject.timeout_add\
196
(self._interval_milliseconds,
197
self.start_checker)
303
198
# Also start a new checker *right now*.
304
199
self.start_checker()
305
200
# 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
201
self.stop_initiator_tag = gobject.timeout_add\
202
(self._timeout_milliseconds,
203
self.stop)
317
204
def stop(self):
318
"""Stop this client."""
319
if not getattr(self, "started", False):
205
"""Stop this client.
206
The possibility that this client might be restarted is left
207
open, but not currently used."""
208
# If this client doesn't have a secret, it is already stopped.
209
if self.secret:
210
logger.debug(u"Stopping client %s", self.name)
211
self.secret = None
212
else:
320
213
return False
321
logger.info(u"Stopping client %s", self.name)
322
if getattr(self, "stop_initiator_tag", False):
214
if hasattr(self, "stop_initiator_tag") \
215
and self.stop_initiator_tag:
323
216
gobject.source_remove(self.stop_initiator_tag)
324
217
self.stop_initiator_tag = None
325
if getattr(self, "checker_initiator_tag", False):
218
if hasattr(self, "checker_initiator_tag") \
219
and self.checker_initiator_tag:
326
220
gobject.source_remove(self.checker_initiator_tag)
327
221
self.checker_initiator_tag = None
328
222
self.stop_checker()
329
223
if self.stop_hook:
330
224
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
225
# Do not run this again if called by a gobject.timeout_add
336
226
return False
337
338
227
def __del__(self):
339
228
self.stop_hook = None
340
229
self.stop()
341
342
def checker_callback(self, pid, condition, command):
230
def checker_callback(self, pid, condition):
343
231
"""The checker has completed, so take appropriate actions."""
232
now = datetime.datetime.now()
344
233
self.checker_callback_tag = None
345
234
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()
235
if os.WIFEXITED(condition) \
236
and (os.WEXITSTATUS(condition) == 0):
237
logger.debug(u"Checker for %(name)s succeeded",
238
vars(self))
239
self.last_seen = now
240
gobject.source_remove(self.stop_initiator_tag)
241
self.stop_initiator_tag = gobject.timeout_add\
242
(self._timeout_milliseconds,
243
self.stop)
358
244
elif not os.WIFEXITED(condition):
359
245
logger.warning(u"Checker for %(name)s crashed?",
360
246
vars(self))
361
# Emit D-Bus signal
362
self.CheckerCompleted(dbus.Boolean(False),
363
dbus.UInt16(condition),
364
dbus.String(command))
365
247
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
248
logger.debug(u"Checker for %(name)s failed",
249
vars(self))
388
250
def start_checker(self):
389
251
"""Start a new checker subprocess if one is not running.
390
252
If a checker already exists, leave it running and do
399
261
# is as it should be.
400
262
if self.checker is None:
401
263
try:
402
# In case checker_command has exactly one % operator
403
command = self.checker_command % self.host
264
command = self.check_command % self.fqdn
404
265
except TypeError:
405
# Escape attributes for the shell
406
266
escaped_attrs = dict((key, re.escape(str(val)))
407
267
for key, val in
408
268
vars(self).iteritems())
409
269
try:
410
command = self.checker_command % escaped_attrs
270
command = self.check_command % escaped_attrs
411
271
except TypeError, error:
412
logger.error(u'Could not format string "%s":'
413
u' %s', self.checker_command, error)
272
logger.critical(u'Could not format string "%s":'
273
u' %s', self.check_command, error)
414
274
return True # Try again later
415
275
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:
276
logger.debug(u"Starting checker %r for %s",
277
command, self.name)
278
self.checker = subprocess.\
279
Popen(command,
280
close_fds=True, shell=True,
281
cwd="/")
282
self.checker_callback_tag = gobject.child_watch_add\
283
(self.checker.pid,
284
self.checker_callback)
285
except subprocess.OSError, error:
434
286
logger.error(u"Failed to start subprocess: %s",
435
287
error)
436
288
# Re-run this periodically if run by gobject.timeout_add
437
289
return True
438
439
290
def stop_checker(self):
440
291
"""Force the checker process, if any, to stop."""
441
292
if self.checker_callback_tag:
442
293
gobject.source_remove(self.checker_callback_tag)
443
294
self.checker_callback_tag = None
444
if getattr(self, "checker", None) is None:
295
if not hasattr(self, "checker") or self.checker is None:
445
296
return
446
logger.debug(u"Stopping checker for %(name)s", vars(self))
297
logger.debug("Stopping checker for %(name)s", vars(self))
447
298
try:
448
299
os.kill(self.checker.pid, signal.SIGTERM)
449
300
#os.sleep(0.5)
450
301
#if self.checker.poll() is None:
451
302
# os.kill(self.checker.pid, signal.SIGKILL)
452
303
except OSError, error:
453
if error.errno != errno.ESRCH: # No such process
304
if error.errno != errno.ESRCH:
454
305
raise
455
306
self.checker = None
456
self.PropertyChanged(dbus.String(u"checker_running"),
457
dbus.Boolean(False, variant_level=1))
458
459
def still_valid(self):
307
def still_valid(self, now=None):
460
308
"""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:
309
if now is None:
310
now = datetime.datetime.now()
311
if self.last_seen is None:
465
312
return now < (self.created + self.timeout)
466
313
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
314
return now < (self.last_seen + self.timeout)
589
315
590
316
591
317
def peer_certificate(session):
592
318
"Return the peer's OpenPGP certificate as a bytestring"
593
319
# 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):
320
if gnutls.library.functions.gnutls_certificate_type_get\
321
(session._c_object) \
322
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
597
323
# ...do the normal thing
598
324
return session.peer_certificate
599
325
list_size = ctypes.c_uint()
600
cert_list = (gnutls.library.functions
601
.gnutls_certificate_get_peers
602
(session._c_object, ctypes.byref(list_size)))
326
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
327
(session._c_object, ctypes.byref(list_size))
603
328
if list_size.value == 0:
604
329
return None
605
330
cert = cert_list[0]
608
333
609
334
def fingerprint(openpgp):
610
335
"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
336
# New empty GnuTLS certificate
618
337
crt = gnutls.library.types.gnutls_openpgp_crt_t()
619
(gnutls.library.functions
620
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
338
gnutls.library.functions.gnutls_openpgp_crt_init\
339
(ctypes.byref(crt))
340
# New GnuTLS "datum" with the OpenPGP public key
341
datum = gnutls.library.types.gnutls_datum_t\
342
(ctypes.cast(ctypes.c_char_p(openpgp),
343
ctypes.POINTER(ctypes.c_ubyte)),
344
ctypes.c_uint(len(openpgp)))
621
345
# 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")
346
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
347
(crt,
348
ctypes.byref(datum),
349
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
633
350
# New buffer for the fingerprint
634
buf = ctypes.create_string_buffer(20)
635
buf_len = ctypes.c_size_t()
351
buffer = ctypes.create_string_buffer(20)
352
buffer_length = ctypes.c_size_t()
636
353
# 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)))
354
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
355
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
640
356
# Deinit the certificate
641
357
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
642
358
# Convert the buffer to a Python bytestring
643
fpr = ctypes.string_at(buf, buf_len.value)
359
fpr = ctypes.string_at(buffer, buffer_length.value)
644
360
# Convert the bytestring to hexadecimal notation
645
361
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
646
362
return hex_fpr
647
363
648
364
649
class TCP_handler(SocketServer.BaseRequestHandler, object):
365
class tcp_handler(SocketServer.BaseRequestHandler, object):
650
366
"""A TCP request handler class.
651
367
Instantiated by IPv6_TCPServer for each request to handle it.
652
368
Note: This will run in its own forked process."""
653
369
654
370
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.
371
logger.debug(u"TCP connection from: %s",
372
unicode(self.client_address))
373
session = gnutls.connection.ClientSession(self.request,
374
gnutls.connection.\
375
X509Credentials())
675
376
676
377
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
677
378
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
678
379
# "+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))
380
priority = "SECURE256"
381
382
gnutls.library.functions.gnutls_priority_set_direct\
383
(session._c_object, priority, None);
684
384
685
385
try:
686
386
session.handshake()
687
387
except gnutls.errors.GNUTLSError, error:
688
logger.warning(u"Handshake failed: %s", error)
388
logger.debug(u"Handshake failed: %s", error)
689
389
# Do not run session.bye() here: the session is not
690
390
# established. Just abandon the request.
691
391
return
692
392
try:
693
393
fpr = fingerprint(peer_certificate(session))
694
394
except (TypeError, gnutls.errors.GNUTLSError), error:
695
logger.warning(u"Bad certificate: %s", error)
395
logger.debug(u"Bad certificate: %s", error)
696
396
session.bye()
697
397
return
698
398
logger.debug(u"Fingerprint: %s", fpr)
399
client = None
699
400
for c in self.server.clients:
700
401
if c.fingerprint == fpr:
701
402
client = c
702
403
break
703
else:
704
logger.warning(u"Client not found for fingerprint: %s",
705
fpr)
706
session.bye()
707
return
708
404
# Have to check if client.still_valid(), since it is possible
709
405
# that the client timed out while establishing the GnuTLS
710
406
# session.
711
if not client.still_valid():
712
logger.warning(u"Client %(name)s is invalid",
713
vars(client))
407
if (not client) or (not client.still_valid()):
408
if client:
409
logger.debug(u"Client %(name)s is invalid",
410
vars(client))
411
else:
412
logger.debug(u"Client not found for fingerprint: %s",
413
fpr)
714
414
session.bye()
715
415
return
716
## This won't work here, since we're in a fork.
717
# client.bump_timeout()
718
416
sent_size = 0
719
417
while sent_size < len(client.secret):
720
418
sent = session.send(client.secret[sent_size:])
725
423
session.bye()
726
424
727
425
728
class IPv6_TCPServer(SocketServer.ForkingMixIn,
729
SocketServer.TCPServer, object):
426
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
730
427
"""IPv6 TCP server. Accepts 'None' as address and/or port.
731
428
Attributes:
732
settings: Server settings
429
options: Command line options
733
430
clients: Set() of Client objects
734
enabled: Boolean; whether this server is activated yet
735
431
"""
736
432
address_family = socket.AF_INET6
737
433
def __init__(self, *args, **kwargs):
738
if "settings" in kwargs:
739
self.settings = kwargs["settings"]
740
del kwargs["settings"]
434
if "options" in kwargs:
435
self.options = kwargs["options"]
436
del kwargs["options"]
741
437
if "clients" in kwargs:
742
438
self.clients = kwargs["clients"]
743
439
del kwargs["clients"]
744
self.enabled = False
745
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
440
return super(type(self), self).__init__(*args, **kwargs)
746
441
def server_bind(self):
747
442
"""This overrides the normal server_bind() function
748
443
to bind to an interface if one was specified, and also NOT to
749
444
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)
445
if self.options.interface:
446
if not hasattr(socket, "SO_BINDTODEVICE"):
447
# From /usr/include/asm-i486/socket.h
448
socket.SO_BINDTODEVICE = 25
753
449
try:
754
450
self.socket.setsockopt(socket.SOL_SOCKET,
755
SO_BINDTODEVICE,
756
self.settings["interface"])
451
socket.SO_BINDTODEVICE,
452
self.options.interface)
757
453
except socket.error, error:
758
454
if error[0] == errno.EPERM:
759
logger.error(u"No permission to"
760
u" bind to interface %s",
761
self.settings["interface"])
455
logger.warning(u"No permission to"
456
u" bind to interface %s",
457
self.options.interface)
762
458
else:
763
459
raise error
764
460
# Only bind(2) the socket if we really need to.
767
463
in6addr_any = "::"
768
464
self.server_address = (in6addr_any,
769
465
self.server_address[1])
770
elif not self.server_address[1]:
466
elif self.server_address[1] is None:
771
467
self.server_address = (self.server_address[0],
772
468
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
469
return super(type(self), self).server_bind()
786
470
787
471
788
472
def string_to_delta(interval):
798
482
datetime.timedelta(1)
799
483
>>> string_to_delta(u'1w')
800
484
datetime.timedelta(7)
801
>>> string_to_delta('5m 30s')
802
datetime.timedelta(0, 330)
803
485
"""
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):
486
try:
487
suffix=unicode(interval[-1])
488
value=int(interval[:-1])
489
if suffix == u"d":
490
delta = datetime.timedelta(value)
491
elif suffix == u"s":
492
delta = datetime.timedelta(0, value)
493
elif suffix == u"m":
494
delta = datetime.timedelta(0, 0, 0, 0, value)
495
elif suffix == u"h":
496
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
497
elif suffix == u"w":
498
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
499
else:
822
500
raise ValueError
823
timevalue += delta
824
return timevalue
501
except (ValueError, IndexError):
502
raise ValueError
503
return delta
504
505
506
def add_service():
507
"""Derived from the Avahi example code"""
508
global group, serviceName, serviceType, servicePort, serviceTXT, \
509
domain, host
510
if group is None:
511
group = dbus.Interface(
512
bus.get_object( avahi.DBUS_NAME,
513
server.EntryGroupNew()),
514
avahi.DBUS_INTERFACE_ENTRY_GROUP)
515
group.connect_to_signal('StateChanged',
516
entry_group_state_changed)
517
logger.debug(u"Adding service '%s' of type '%s' ...",
518
serviceName, serviceType)
519
520
group.AddService(
521
serviceInterface, # interface
522
avahi.PROTO_INET6, # protocol
523
dbus.UInt32(0), # flags
524
serviceName, serviceType,
525
domain, host,
526
dbus.UInt16(servicePort),
527
avahi.string_array_to_txt_array(serviceTXT))
528
group.Commit()
529
530
531
def remove_service():
532
"""From the Avahi example code"""
533
global group
534
535
if not group is None:
536
group.Reset()
825
537
826
538
827
539
def server_state_changed(state):
828
540
"""Derived from the Avahi example code"""
829
541
if state == avahi.SERVER_COLLISION:
830
logger.error(u"Zeroconf server name collision")
831
service.remove()
542
logger.warning(u"Server name collision")
543
remove_service()
832
544
elif state == avahi.SERVER_RUNNING:
833
service.add()
545
add_service()
834
546
835
547
836
548
def entry_group_state_changed(state, error):
837
549
"""Derived from the Avahi example code"""
838
logger.debug(u"Avahi state change: %i", state)
550
global serviceName, server, rename_count
551
552
logger.debug(u"state change: %i", state)
839
553
840
554
if state == avahi.ENTRY_GROUP_ESTABLISHED:
841
logger.debug(u"Zeroconf service established.")
555
logger.debug(u"Service established.")
842
556
elif state == avahi.ENTRY_GROUP_COLLISION:
843
logger.warning(u"Zeroconf service name collision.")
844
service.rename()
557
558
rename_count = rename_count - 1
559
if rename_count > 0:
560
name = server.GetAlternativeServiceName(name)
561
logger.warning(u"Service name collision, "
562
u"changing name to '%s' ...", name)
563
remove_service()
564
add_service()
565
566
else:
567
logger.error(u"No suitable service name found after %i"
568
u" retries, exiting.", n_rename)
569
killme(1)
845
570
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))
571
logger.error(u"Error in group state changed %s",
572
unicode(error))
573
killme(1)
574
849
575
850
576
def if_nametoindex(interface):
851
"""Call the C function if_nametoindex(), or equivalent"""
852
global if_nametoindex
577
"""Call the C function if_nametoindex()"""
853
578
try:
854
if_nametoindex = (ctypes.cdll.LoadLibrary
855
(ctypes.util.find_library("c"))
856
.if_nametoindex)
579
libc = ctypes.cdll.LoadLibrary("libc.so.6")
580
return libc.if_nametoindex(interface)
857
581
except (OSError, AttributeError):
858
582
if "struct" not in sys.modules:
859
583
import struct
860
584
if "fcntl" not in sys.modules:
861
585
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):
586
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
587
s = socket.socket()
588
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
589
struct.pack("16s16x", interface))
590
s.close()
591
interface_index = struct.unpack("I", ifreq[16:20])[0]
592
return interface_index
593
594
595
def daemon(nochdir, noclose):
874
596
"""See daemon(3). Standard BSD Unix function.
875
597
This should really exist as os.daemon, but it doesn't (yet)."""
876
598
if os.fork():
878
600
os.setsid()
879
601
if not nochdir:
880
602
os.chdir("/")
881
if os.fork():
882
sys.exit()
883
603
if not noclose:
884
604
# Close all standard open file descriptors
885
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
605
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
886
606
if not stat.S_ISCHR(os.fstat(null).st_mode):
887
607
raise OSError(errno.ENODEV,
888
608
"/dev/null not a character device")
893
613
os.close(null)
894
614
895
615
616
def killme(status = 0):
617
logger.debug("Stopping server with exit status %d", status)
618
exitstatus = status
619
if main_loop_started:
620
main_loop.quit()
621
else:
622
sys.exit(status)
623
624
896
625
def main():
897
parser = OptionParser(version = "%%prog %s" % version)
626
global exitstatus
627
exitstatus = 0
628
global main_loop_started
629
main_loop_started = False
630
631
parser = OptionParser()
898
632
parser.add_option("-i", "--interface", type="string",
899
metavar="IF", help="Bind to interface IF")
900
parser.add_option("-a", "--address", type="string",
633
default=None, metavar="IF",
634
help="Bind to interface IF")
635
parser.add_option("-a", "--address", type="string", default=None,
901
636
help="Address to listen for requests on")
902
parser.add_option("-p", "--port", type="int",
637
parser.add_option("-p", "--port", type="int", default=None,
903
638
help="Port number to receive requests on")
639
parser.add_option("--timeout", type="string", # Parsed later
640
default="1h",
641
help="Amount of downtime allowed for clients")
642
parser.add_option("--interval", type="string", # Parsed later
643
default="5m",
644
help="How often to check that a client is up")
904
645
parser.add_option("--check", action="store_true", default=False,
905
646
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]
647
parser.add_option("--debug", action="store_true", default=False,
648
help="Debug mode")
649
(options, args) = parser.parse_args()
918
650
919
651
if options.check:
920
652
import doctest
921
653
doctest.testmod()
922
654
sys.exit()
923
655
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"]))
656
# Parse the time arguments
657
try:
658
options.timeout = string_to_delta(options.timeout)
659
except ValueError:
660
parser.error("option --timeout: Unparseable time")
661
try:
662
options.interval = string_to_delta(options.interval)
663
except ValueError:
664
parser.error("option --interval: Unparseable time")
665
666
# Parse config file
667
defaults = { "checker": "fping -q -- %%(fqdn)s" }
668
client_config = ConfigParser.SafeConfigParser(defaults)
669
#client_config.readfp(open("global.conf"), "global.conf")
670
client_config.read("mandos-clients.conf")
1022
671
1023
672
global main_loop
1024
673
global bus
1027
676
DBusGMainLoop(set_as_default=True )
1028
677
main_loop = gobject.MainLoop()
1029
678
bus = dbus.SystemBus()
1030
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1031
avahi.DBUS_PATH_SERVER),
1032
avahi.DBUS_INTERFACE_SERVER)
679
server = dbus.Interface(
680
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
681
avahi.DBUS_INTERFACE_SERVER )
1033
682
# 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)))
683
684
debug = options.debug
685
686
if debug:
687
console = logging.StreamHandler()
688
# console.setLevel(logging.DEBUG)
689
console.setFormatter(logging.Formatter\
690
('%(levelname)s: %(message)s'))
691
logger.addHandler(console)
692
del console
693
694
clients = Set()
695
def remove_from_clients(client):
696
clients.remove(client)
697
if not clients:
698
logger.debug(u"No clients left, exiting")
699
killme()
700
701
clients.update(Set(Client(name=section, options=options,
702
stop_hook = remove_from_clients,
703
**(dict(client_config\
704
.items(section))))
1039
705
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
706
707
if not debug:
708
daemon(False, False)
1068
709
1069
710
def cleanup():
1070
711
"Cleanup function; run on exit"
1084
725
1085
726
if not debug:
1086
727
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()
728
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
729
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1130
730
1131
731
for client in clients:
1132
# Emit D-Bus signal
1133
mandos_server.ClientAdded(client.dbus_object_path,
1134
client.GetAllProperties())
1135
732
client.start()
1136
733
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")
734
tcp_server = IPv6_TCPServer((options.address, options.port),
735
tcp_handler,
736
options=options,
737
clients=clients)
738
# Find out what random port we got
739
global servicePort
740
servicePort = tcp_server.socket.getsockname()[1]
741
logger.debug(u"Now listening on port %d", servicePort)
742
743
if options.interface is not None:
744
global serviceInterface
745
serviceInterface = if_nametoindex(options.interface)
746
747
# From the Avahi example code
748
server.connect_to_signal("StateChanged", server_state_changed)
749
try:
750
server_state_changed(server.GetState())
751
except dbus.exceptions.DBusException, error:
752
logger.critical(u"DBusException: %s", error)
753
killme(1)
754
# End of Avahi example code
755
756
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
757
lambda *args, **kwargs:
758
tcp_server.handle_request(*args[2:],
759
**kwargs) or True)
760
try:
761
logger.debug("Starting main loop")
762
main_loop_started = True
1163
763
main_loop.run()
1164
except AvahiError, error:
1165
logger.critical(u"AvahiError: %s" + unicode(error))
1166
sys.exit(1)
1167
764
except KeyboardInterrupt:
1168
765
if debug:
1169
766
print
767
768
sys.exit(exitstatus)
1170
769
1171
770
if __name__ == '__main__':
1172
771
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0