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- Committer: Teddy Hogeborn
- Date: 2008-07-20 06:33:48 UTC
- Revision ID: teddy@fukt.bsnet.se-20080720063348-jscgy5p0itrgvlo8
* mandos-clients.conf ([foo]): Uncommented.
([foo]/secret): New.
([foo]/secfile): Commented out.
([foo]/checker): Changed to "fping -q -- %%(fqdn)s".
([foo]/timeout): New.
* server.py: New modeline for Python and Emacs. Set a logging format.
(Client.__init__): Bug fix: Choose either the value from the options
object or pass the argument through string_to_delta
for both "timeout" and "interval".
(Client.checker_callback): Bug fix: Do not log spurious "Checker for
<foo> failed" messages.
(Client.start_checker): Moved "Starting checker" log message down to
just before actually starting the subprocess.
Do not redirect the subprocesses' stdout to a
pipe.
(peer_certificate, fingerprint): Added docstrings.
(entry_group_state_changed): Call "killme()" instead of
"main_loop.quit()".
(daemon, killme): New functions.
(exitstatus, main_loop_started): New global variables.
(__main__): Removed the "--cert", "--key", "--ca", and "--crl"
options. Removed the sleep command from the default
checker. Add a console logger in debug mode. Call
"killme()" instead of "main_loop.quit()" when there are no
more clients. Call "daemon()" if not in debug mode.
Register "cleanup()" to run at exit. Ignore some
signals. Catch DBusException to detect another running
server and exit cleanly. Exit with "exitstatus".
(cleanup): New function.
([foo]/secret): New.
([foo]/secfile): Commented out.
([foo]/checker): Changed to "fping -q -- %%(fqdn)s".
([foo]/timeout): New.
* server.py: New modeline for Python and Emacs. Set a logging format.
(Client.__init__): Bug fix: Choose either the value from the options
object or pass the argument through string_to_delta
for both "timeout" and "interval".
(Client.checker_callback): Bug fix: Do not log spurious "Checker for
<foo> failed" messages.
(Client.start_checker): Moved "Starting checker" log message down to
just before actually starting the subprocess.
Do not redirect the subprocesses' stdout to a
pipe.
(peer_certificate, fingerprint): Added docstrings.
(entry_group_state_changed): Call "killme()" instead of
"main_loop.quit()".
(daemon, killme): New functions.
(exitstatus, main_loop_started): New global variables.
(__main__): Removed the "--cert", "--key", "--ca", and "--crl"
options. Removed the sleep command from the default
checker. Add a console logger in debug mode. Call
"killme()" instead of "main_loop.quit()" when there are no
more clients. Call "daemon()" if not in debug mode.
Register "cleanup()" to run at exit. Ignore some
signals. Catch DBusException to detect another running
server and exit cleanly. Exit with "exitstatus".
(cleanup): New function.
- 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
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
# Mandos server - give out binary blobs to connecting clients.
5
#
6
# This program is partly derived from an example program for an Avahi
7
# service publisher, downloaded from
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
12
#
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
19
# the Free Software Foundation, either version 3 of the License, or
20
# (at your option) any later version.
21
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
# GNU General Public License for more details.
26
#
27
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
3
4
from __future__ import division
5
6
import SocketServer
37
7
import socket
38
import optparse
8
import select
9
from optparse import OptionParser
39
10
import datetime
40
11
import errno
41
12
import gnutls.crypto
44
15
import gnutls.library.functions
45
16
import gnutls.library.constants
46
17
import gnutls.library.types
47
import ConfigParser as configparser
18
import ConfigParser
48
19
import sys
49
20
import re
50
21
import os
51
22
import signal
23
from sets import Set
52
24
import subprocess
53
25
import atexit
54
26
import stat
55
import logging
56
import logging.handlers
57
import pwd
58
from contextlib import closing
59
import struct
60
import fcntl
61
27
62
28
import dbus
63
import dbus.service
64
29
import gobject
65
30
import avahi
66
31
from dbus.mainloop.glib import DBusGMainLoop
67
32
import ctypes
68
import ctypes.util
69
70
try:
71
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
72
except AttributeError:
73
try:
74
from IN import SO_BINDTODEVICE
75
except ImportError:
76
# From /usr/include/asm/socket.h
77
SO_BINDTODEVICE = 25
78
79
80
version = "1.0.8"
81
82
logger = logging.Logger(u'mandos')
83
syslogger = (logging.handlers.SysLogHandler
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
33
34
import logging
35
import logging.handlers
36
37
logger = logging.Logger('mandos')
38
syslogger = logging.handlers.SysLogHandler\
39
(facility = logging.handlers.SysLogHandler.LOG_DAEMON)
40
syslogger.setFormatter(logging.Formatter\
41
('%(levelname)s: %(message)s'))
89
42
logger.addHandler(syslogger)
90
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
95
logger.addHandler(console)
96
97
class AvahiError(Exception):
98
def __init__(self, value, *args, **kwargs):
99
self.value = value
100
super(AvahiError, self).__init__(value, *args, **kwargs)
101
def __unicode__(self):
102
return unicode(repr(self.value))
103
104
class AvahiServiceError(AvahiError):
105
pass
106
107
class AvahiGroupError(AvahiError):
108
pass
109
110
111
class AvahiService(object):
112
"""An Avahi (Zeroconf) service.
113
114
Attributes:
115
interface: integer; avahi.IF_UNSPEC or an interface index.
116
Used to optionally bind to the specified interface.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
119
See <http://www.dns-sd.org/ServiceTypes.html>
120
port: integer; what port to announce
121
TXT: list of strings; TXT record for the service
122
domain: string; Domain to publish on, default to .local if empty.
123
host: string; Host to publish records for, default is localhost
124
max_renames: integer; maximum number of renames
125
rename_count: integer; counter so we only rename after collisions
126
a sensible number of times
127
"""
128
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
129
servicetype = None, port = None, TXT = None,
130
domain = u"", host = u"", max_renames = 32768,
131
protocol = avahi.PROTO_UNSPEC):
132
self.interface = interface
133
self.name = name
134
self.type = servicetype
135
self.port = port
136
self.TXT = TXT if TXT is not None else []
137
self.domain = domain
138
self.host = host
139
self.rename_count = 0
140
self.max_renames = max_renames
141
self.protocol = protocol
142
def rename(self):
143
"""Derived from the Avahi example code"""
144
if self.rename_count >= self.max_renames:
145
logger.critical(u"No suitable Zeroconf service name found"
146
u" after %i retries, exiting.",
147
self.rename_count)
148
raise AvahiServiceError(u"Too many renames")
149
self.name = server.GetAlternativeServiceName(self.name)
150
logger.info(u"Changing Zeroconf service name to %r ...",
151
self.name)
152
syslogger.setFormatter(logging.Formatter
153
(u'Mandos (%s) [%%(process)d]:'
154
u' %%(levelname)s: %%(message)s'
155
% self.name))
156
self.remove()
157
self.add()
158
self.rename_count += 1
159
def remove(self):
160
"""Derived from the Avahi example code"""
161
if group is not None:
162
group.Reset()
163
def add(self):
164
"""Derived from the Avahi example code"""
165
global group
166
if group is None:
167
group = dbus.Interface(bus.get_object
168
(avahi.DBUS_NAME,
169
server.EntryGroupNew()),
170
avahi.DBUS_INTERFACE_ENTRY_GROUP)
171
group.connect_to_signal('StateChanged',
172
entry_group_state_changed)
173
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
174
service.name, service.type)
175
group.AddService(
176
self.interface, # interface
177
self.protocol, # protocol
178
dbus.UInt32(0), # flags
179
self.name, self.type,
180
self.domain, self.host,
181
dbus.UInt16(self.port),
182
avahi.string_array_to_txt_array(self.TXT))
183
group.Commit()
184
185
# From the Avahi example code:
186
group = None # our entry group
43
del syslogger
44
45
# This variable is used to optionally bind to a specified interface.
46
# It is a global variable to fit in with the other variables from the
47
# Avahi server example code.
48
serviceInterface = avahi.IF_UNSPEC
49
# From the Avahi server example code:
50
serviceName = "Mandos"
51
serviceType = "_mandos._tcp" # http://www.dns-sd.org/ServiceTypes.html
52
servicePort = None # Not known at startup
53
serviceTXT = [] # TXT record for the service
54
domain = "" # Domain to publish on, default to .local
55
host = "" # Host to publish records for, default to localhost
56
group = None #our entry group
57
rename_count = 12 # Counter so we only rename after collisions a
58
# sensible number of times
187
59
# End of Avahi example code
188
60
189
61
190
def _datetime_to_dbus(dt, variant_level=0):
191
"""Convert a UTC datetime.datetime() to a D-Bus type."""
192
return dbus.String(dt.isoformat(), variant_level=variant_level)
193
194
195
62
class Client(object):
196
63
"""A representation of a client host served by this server.
197
198
64
Attributes:
199
name: string; from the config file, used in log messages and
200
D-Bus identifiers
65
name: string; from the config file, used in log messages
201
66
fingerprint: string (40 or 32 hexadecimal digits); used to
202
67
uniquely identify the client
203
secret: bytestring; sent verbatim (over TLS) to client
204
host: string; available for use by the checker command
205
created: datetime.datetime(); (UTC) object creation
206
last_enabled: datetime.datetime(); (UTC)
207
enabled: bool()
208
last_checked_ok: datetime.datetime(); (UTC) or None
209
timeout: datetime.timedelta(); How long from last_checked_ok
210
until this client is invalid
211
interval: datetime.timedelta(); How often to start a new checker
212
disable_hook: If set, called by disable() as disable_hook(self)
213
checker: subprocess.Popen(); a running checker process used
214
to see if the client lives.
215
'None' if no process is running.
68
secret: bytestring; sent verbatim (over TLS) to client
69
fqdn: string (FQDN); available for use by the checker command
70
created: datetime.datetime()
71
last_seen: datetime.datetime() or None if not yet seen
72
timeout: datetime.timedelta(); How long from last_seen until
73
this client is invalid
74
interval: datetime.timedelta(); How often to start a new checker
75
stop_hook: If set, called by stop() as stop_hook(self)
76
checker: subprocess.Popen(); a running checker process used
77
to see if the client lives.
78
Is None if no process is running.
216
79
checker_initiator_tag: a gobject event source tag, or None
217
disable_initiator_tag: - '' -
80
stop_initiator_tag: - '' -
218
81
checker_callback_tag: - '' -
219
82
checker_command: string; External command which is run to check if
220
client lives. %() expansions are done at
83
client lives. %()s expansions are done at
221
84
runtime with vars(self) as dict, so that for
222
85
instance %(name)s can be used in the command.
223
current_checker_command: string; current running checker_command
86
Private attibutes:
87
_timeout: Real variable for 'timeout'
88
_interval: Real variable for 'interval'
89
_timeout_milliseconds: Used by gobject.timeout_add()
90
_interval_milliseconds: - '' -
224
91
"""
225
226
@staticmethod
227
def _datetime_to_milliseconds(dt):
228
"Convert a datetime.datetime() to milliseconds"
229
return ((dt.days * 24 * 60 * 60 * 1000)
230
+ (dt.seconds * 1000)
231
+ (dt.microseconds // 1000))
232
233
def timeout_milliseconds(self):
234
"Return the 'timeout' attribute in milliseconds"
235
return self._datetime_to_milliseconds(self.timeout)
236
237
def interval_milliseconds(self):
238
"Return the 'interval' attribute in milliseconds"
239
return self._datetime_to_milliseconds(self.interval)
240
241
def __init__(self, name = None, disable_hook=None, config=None):
242
"""Note: the 'checker' key in 'config' sets the
243
'checker_command' attribute and *not* the 'checker'
244
attribute."""
92
def _set_timeout(self, timeout):
93
"Setter function for 'timeout' attribute"
94
self._timeout = timeout
95
self._timeout_milliseconds = ((self.timeout.days
96
* 24 * 60 * 60 * 1000)
97
+ (self.timeout.seconds * 1000)
98
+ (self.timeout.microseconds
99
// 1000))
100
timeout = property(lambda self: self._timeout,
101
_set_timeout)
102
del _set_timeout
103
def _set_interval(self, interval):
104
"Setter function for 'interval' attribute"
105
self._interval = interval
106
self._interval_milliseconds = ((self.interval.days
107
* 24 * 60 * 60 * 1000)
108
+ (self.interval.seconds
109
* 1000)
110
+ (self.interval.microseconds
111
// 1000))
112
interval = property(lambda self: self._interval,
113
_set_interval)
114
del _set_interval
115
def __init__(self, name=None, options=None, stop_hook=None,
116
fingerprint=None, secret=None, secfile=None,
117
fqdn=None, timeout=None, interval=-1, checker=None):
245
118
self.name = name
246
if config is None:
247
config = {}
248
logger.debug(u"Creating client %r", self.name)
249
# Uppercase and remove spaces from fingerprint for later
250
# comparison purposes with return value from the fingerprint()
251
# function
252
self.fingerprint = (config[u"fingerprint"].upper()
253
.replace(u" ", u""))
254
logger.debug(u" Fingerprint: %s", self.fingerprint)
255
if u"secret" in config:
256
self.secret = config[u"secret"].decode(u"base64")
257
elif u"secfile" in config:
258
with closing(open(os.path.expanduser
259
(os.path.expandvars
260
(config[u"secfile"])))) as secfile:
261
self.secret = secfile.read()
262
else:
263
raise TypeError(u"No secret or secfile for client %s"
264
% self.name)
265
self.host = config.get(u"host", u"")
266
self.created = datetime.datetime.utcnow()
267
self.enabled = False
268
self.last_enabled = None
269
self.last_checked_ok = None
270
self.timeout = string_to_delta(config[u"timeout"])
271
self.interval = string_to_delta(config[u"interval"])
272
self.disable_hook = disable_hook
119
# Uppercase and remove spaces from fingerprint
120
# for later comparison purposes with return value of
121
# the fingerprint() function
122
self.fingerprint = fingerprint.upper().replace(u" ", u"")
123
if secret:
124
self.secret = secret.decode(u"base64")
125
elif secfile:
126
sf = open(secfile)
127
self.secret = sf.read()
128
sf.close()
129
else:
130
raise RuntimeError(u"No secret or secfile for client %s"
131
% self.name)
132
self.fqdn = fqdn # string
133
self.created = datetime.datetime.now()
134
self.last_seen = None
135
if timeout is None:
136
self.timeout = options.timeout
137
else:
138
self.timeout = string_to_delta(timeout)
139
if interval == -1:
140
self.interval = options.interval
141
else:
142
self.interval = string_to_delta(interval)
143
self.stop_hook = stop_hook
273
144
self.checker = None
274
145
self.checker_initiator_tag = None
275
self.disable_initiator_tag = None
146
self.stop_initiator_tag = None
276
147
self.checker_callback_tag = None
277
self.checker_command = config[u"checker"]
278
self.current_checker_command = None
279
self.last_connect = None
280
281
def enable(self):
282
"""Start this client's checker and timeout hooks"""
283
self.last_enabled = datetime.datetime.utcnow()
148
self.check_command = checker
149
def start(self):
150
"""Start this clients checker and timeout hooks"""
284
151
# Schedule a new checker to be started an 'interval' from now,
285
152
# and every interval from then on.
286
self.checker_initiator_tag = (gobject.timeout_add
287
(self.interval_milliseconds(),
288
self.start_checker))
153
self.checker_initiator_tag = gobject.timeout_add\
154
(self._interval_milliseconds,
155
self.start_checker)
289
156
# Also start a new checker *right now*.
290
157
self.start_checker()
291
# Schedule a disable() when 'timeout' has passed
292
self.disable_initiator_tag = (gobject.timeout_add
293
(self.timeout_milliseconds(),
294
self.disable))
295
self.enabled = True
296
297
def disable(self):
298
"""Disable this client."""
299
if not getattr(self, "enabled", False):
300
return False
301
logger.info(u"Disabling client %s", self.name)
302
if getattr(self, u"disable_initiator_tag", False):
303
gobject.source_remove(self.disable_initiator_tag)
304
self.disable_initiator_tag = None
305
if getattr(self, u"checker_initiator_tag", False):
158
# Schedule a stop() when 'timeout' has passed
159
self.stop_initiator_tag = gobject.timeout_add\
160
(self._timeout_milliseconds,
161
self.stop)
162
def stop(self):
163
"""Stop this client.
164
The possibility that this client might be restarted is left
165
open, but not currently used."""
166
logger.debug(u"Stopping client %s", self.name)
167
self.secret = None
168
if self.stop_initiator_tag:
169
gobject.source_remove(self.stop_initiator_tag)
170
self.stop_initiator_tag = None
171
if self.checker_initiator_tag:
306
172
gobject.source_remove(self.checker_initiator_tag)
307
173
self.checker_initiator_tag = None
308
174
self.stop_checker()
309
if self.disable_hook:
310
self.disable_hook(self)
311
self.enabled = False
175
if self.stop_hook:
176
self.stop_hook(self)
312
177
# Do not run this again if called by a gobject.timeout_add
313
178
return False
314
315
179
def __del__(self):
316
self.disable_hook = None
317
self.disable()
318
319
def checker_callback(self, pid, condition, command):
180
# Some code duplication here and in stop()
181
if hasattr(self, "stop_initiator_tag") \
182
and self.stop_initiator_tag:
183
gobject.source_remove(self.stop_initiator_tag)
184
self.stop_initiator_tag = None
185
if hasattr(self, "checker_initiator_tag") \
186
and self.checker_initiator_tag:
187
gobject.source_remove(self.checker_initiator_tag)
188
self.checker_initiator_tag = None
189
self.stop_checker()
190
def checker_callback(self, pid, condition):
320
191
"""The checker has completed, so take appropriate actions."""
321
self.checker_callback_tag = None
322
self.checker = None
323
if os.WIFEXITED(condition):
324
exitstatus = os.WEXITSTATUS(condition)
325
if exitstatus == 0:
326
logger.info(u"Checker for %(name)s succeeded",
327
vars(self))
328
self.checked_ok()
329
else:
330
logger.info(u"Checker for %(name)s failed",
331
vars(self))
332
else:
192
now = datetime.datetime.now()
193
if os.WIFEXITED(condition) \
194
and (os.WEXITSTATUS(condition) == 0):
195
logger.debug(u"Checker for %(name)s succeeded",
196
vars(self))
197
self.last_seen = now
198
gobject.source_remove(self.stop_initiator_tag)
199
self.stop_initiator_tag = gobject.timeout_add\
200
(self._timeout_milliseconds,
201
self.stop)
202
elif not os.WIFEXITED(condition):
333
203
logger.warning(u"Checker for %(name)s crashed?",
334
204
vars(self))
335
336
def checked_ok(self):
337
"""Bump up the timeout for this client.
338
339
This should only be called when the client has been seen,
340
alive and well.
341
"""
342
self.last_checked_ok = datetime.datetime.utcnow()
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = (gobject.timeout_add
345
(self.timeout_milliseconds(),
346
self.disable))
347
205
else:
206
logger.debug(u"Checker for %(name)s failed",
207
vars(self))
208
self.checker = None
209
self.checker_callback_tag = None
348
210
def start_checker(self):
349
211
"""Start a new checker subprocess if one is not running.
350
351
212
If a checker already exists, leave it running and do
352
213
nothing."""
353
# The reason for not killing a running checker is that if we
354
# did that, then if a checker (for some reason) started
355
# running slowly and taking more than 'interval' time, the
356
# client would inevitably timeout, since no checker would get
357
# a chance to run to completion. If we instead leave running
358
# checkers alone, the checker would have to take more time
359
# than 'timeout' for the client to be declared invalid, which
360
# is as it should be.
361
362
# If a checker exists, make sure it is not a zombie
363
if self.checker is not None:
364
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
365
if pid:
366
logger.warning(u"Checker was a zombie")
367
gobject.source_remove(self.checker_callback_tag)
368
self.checker_callback(pid, status,
369
self.current_checker_command)
370
# Start a new checker if needed
371
214
if self.checker is None:
372
215
try:
373
# In case checker_command has exactly one % operator
374
command = self.checker_command % self.host
216
command = self.check_command % self.fqdn
375
217
except TypeError:
376
# Escape attributes for the shell
377
escaped_attrs = dict((key,
378
re.escape(unicode(str(val),
379
errors=
380
u'replace')))
218
escaped_attrs = dict((key, re.escape(str(val)))
381
219
for key, val in
382
220
vars(self).iteritems())
383
221
try:
384
command = self.checker_command % escaped_attrs
222
command = self.check_command % escaped_attrs
385
223
except TypeError, error:
386
logger.error(u'Could not format string "%s":'
387
u' %s', self.checker_command, error)
224
logger.critical(u'Could not format string "%s":'
225
u' %s', self.check_command, error)
388
226
return True # Try again later
389
self.current_checker_command = command
390
227
try:
391
logger.info(u"Starting checker %r for %s",
392
command, self.name)
393
# We don't need to redirect stdout and stderr, since
394
# in normal mode, that is already done by daemon(),
395
# and in debug mode we don't want to. (Stdin is
396
# always replaced by /dev/null.)
397
self.checker = subprocess.Popen(command,
398
close_fds=True,
399
shell=True, cwd=u"/")
400
self.checker_callback_tag = (gobject.child_watch_add
401
(self.checker.pid,
402
self.checker_callback,
403
data=command))
404
# The checker may have completed before the gobject
405
# watch was added. Check for this.
406
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
407
if pid:
408
gobject.source_remove(self.checker_callback_tag)
409
self.checker_callback(pid, status, command)
410
except OSError, error:
228
logger.debug(u"Starting checker %r for %s",
229
command, self.name)
230
self.checker = subprocess.\
231
Popen(command,
232
close_fds=True, shell=True,
233
cwd="/")
234
self.checker_callback_tag = gobject.child_watch_add\
235
(self.checker.pid,
236
self.checker_callback)
237
except subprocess.OSError, error:
411
238
logger.error(u"Failed to start subprocess: %s",
412
239
error)
413
240
# Re-run this periodically if run by gobject.timeout_add
414
241
return True
415
416
242
def stop_checker(self):
417
243
"""Force the checker process, if any, to stop."""
418
if self.checker_callback_tag:
419
gobject.source_remove(self.checker_callback_tag)
420
self.checker_callback_tag = None
421
if getattr(self, u"checker", None) is None:
244
if not hasattr(self, "checker") or self.checker is None:
422
245
return
423
logger.debug(u"Stopping checker for %(name)s", vars(self))
424
try:
425
os.kill(self.checker.pid, signal.SIGTERM)
426
#os.sleep(0.5)
427
#if self.checker.poll() is None:
428
# os.kill(self.checker.pid, signal.SIGKILL)
429
except OSError, error:
430
if error.errno != errno.ESRCH: # No such process
431
raise
246
gobject.source_remove(self.checker_callback_tag)
247
self.checker_callback_tag = None
248
os.kill(self.checker.pid, signal.SIGTERM)
249
if self.checker.poll() is None:
250
os.kill(self.checker.pid, signal.SIGKILL)
432
251
self.checker = None
433
434
def still_valid(self):
252
def still_valid(self, now=None):
435
253
"""Has the timeout not yet passed for this client?"""
436
if not getattr(self, u"enabled", False):
437
return False
438
now = datetime.datetime.utcnow()
439
if self.last_checked_ok is None:
254
if now is None:
255
now = datetime.datetime.now()
256
if self.last_seen is None:
440
257
return now < (self.created + self.timeout)
441
258
else:
442
return now < (self.last_checked_ok + self.timeout)
443
444
445
class ClientDBus(Client, dbus.service.Object):
446
"""A Client class using D-Bus
447
448
Attributes:
449
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
450
"""
451
# dbus.service.Object doesn't use super(), so we can't either.
452
453
def __init__(self, *args, **kwargs):
454
Client.__init__(self, *args, **kwargs)
455
# Only now, when this client is initialized, can it show up on
456
# the D-Bus
457
self.dbus_object_path = (dbus.ObjectPath
458
(u"/clients/"
459
+ self.name.replace(u".", u"_")))
460
dbus.service.Object.__init__(self, bus,
461
self.dbus_object_path)
462
def enable(self):
463
oldstate = getattr(self, u"enabled", False)
464
r = Client.enable(self)
465
if oldstate != self.enabled:
466
# Emit D-Bus signals
467
self.PropertyChanged(dbus.String(u"enabled"),
468
dbus.Boolean(True, variant_level=1))
469
self.PropertyChanged(dbus.String(u"last_enabled"),
470
(_datetime_to_dbus(self.last_enabled,
471
variant_level=1)))
472
return r
473
474
def disable(self, signal = True):
475
oldstate = getattr(self, u"enabled", False)
476
r = Client.disable(self)
477
if signal and oldstate != self.enabled:
478
# Emit D-Bus signal
479
self.PropertyChanged(dbus.String(u"enabled"),
480
dbus.Boolean(False, variant_level=1))
481
return r
482
483
def __del__(self, *args, **kwargs):
484
try:
485
self.remove_from_connection()
486
except LookupError:
487
pass
488
if hasattr(dbus.service.Object, u"__del__"):
489
dbus.service.Object.__del__(self, *args, **kwargs)
490
Client.__del__(self, *args, **kwargs)
491
492
def checker_callback(self, pid, condition, command,
493
*args, **kwargs):
494
self.checker_callback_tag = None
495
self.checker = None
496
# Emit D-Bus signal
497
self.PropertyChanged(dbus.String(u"checker_running"),
498
dbus.Boolean(False, variant_level=1))
499
if os.WIFEXITED(condition):
500
exitstatus = os.WEXITSTATUS(condition)
501
# Emit D-Bus signal
502
self.CheckerCompleted(dbus.Int16(exitstatus),
503
dbus.Int64(condition),
504
dbus.String(command))
505
else:
506
# Emit D-Bus signal
507
self.CheckerCompleted(dbus.Int16(-1),
508
dbus.Int64(condition),
509
dbus.String(command))
510
511
return Client.checker_callback(self, pid, condition, command,
512
*args, **kwargs)
513
514
def checked_ok(self, *args, **kwargs):
515
r = Client.checked_ok(self, *args, **kwargs)
516
# Emit D-Bus signal
517
self.PropertyChanged(
518
dbus.String(u"last_checked_ok"),
519
(_datetime_to_dbus(self.last_checked_ok,
520
variant_level=1)))
521
return r
522
523
def start_checker(self, *args, **kwargs):
524
old_checker = self.checker
525
if self.checker is not None:
526
old_checker_pid = self.checker.pid
527
else:
528
old_checker_pid = None
529
r = Client.start_checker(self, *args, **kwargs)
530
# Only if new checker process was started
531
if (self.checker is not None
532
and old_checker_pid != self.checker.pid):
533
# Emit D-Bus signal
534
self.CheckerStarted(self.current_checker_command)
535
self.PropertyChanged(
536
dbus.String(u"checker_running"),
537
dbus.Boolean(True, variant_level=1))
538
return r
539
540
def stop_checker(self, *args, **kwargs):
541
old_checker = getattr(self, u"checker", None)
542
r = Client.stop_checker(self, *args, **kwargs)
543
if (old_checker is not None
544
and getattr(self, u"checker", None) is None):
545
self.PropertyChanged(dbus.String(u"checker_running"),
546
dbus.Boolean(False, variant_level=1))
547
return r
548
549
## D-Bus methods & signals
550
_interface = u"se.bsnet.fukt.Mandos.Client"
551
552
# CheckedOK - method
553
@dbus.service.method(_interface)
554
def CheckedOK(self):
555
return self.checked_ok()
556
557
# CheckerCompleted - signal
558
@dbus.service.signal(_interface, signature=u"nxs")
559
def CheckerCompleted(self, exitcode, waitstatus, command):
560
"D-Bus signal"
561
pass
562
563
# CheckerStarted - signal
564
@dbus.service.signal(_interface, signature=u"s")
565
def CheckerStarted(self, command):
566
"D-Bus signal"
567
pass
568
569
# GetAllProperties - method
570
@dbus.service.method(_interface, out_signature=u"a{sv}")
571
def GetAllProperties(self):
572
"D-Bus method"
573
return dbus.Dictionary({
574
dbus.String(u"name"):
575
dbus.String(self.name, variant_level=1),
576
dbus.String(u"fingerprint"):
577
dbus.String(self.fingerprint, variant_level=1),
578
dbus.String(u"host"):
579
dbus.String(self.host, variant_level=1),
580
dbus.String(u"created"):
581
_datetime_to_dbus(self.created, variant_level=1),
582
dbus.String(u"last_enabled"):
583
(_datetime_to_dbus(self.last_enabled,
584
variant_level=1)
585
if self.last_enabled is not None
586
else dbus.Boolean(False, variant_level=1)),
587
dbus.String(u"enabled"):
588
dbus.Boolean(self.enabled, variant_level=1),
589
dbus.String(u"last_checked_ok"):
590
(_datetime_to_dbus(self.last_checked_ok,
591
variant_level=1)
592
if self.last_checked_ok is not None
593
else dbus.Boolean (False, variant_level=1)),
594
dbus.String(u"timeout"):
595
dbus.UInt64(self.timeout_milliseconds(),
596
variant_level=1),
597
dbus.String(u"interval"):
598
dbus.UInt64(self.interval_milliseconds(),
599
variant_level=1),
600
dbus.String(u"checker"):
601
dbus.String(self.checker_command,
602
variant_level=1),
603
dbus.String(u"checker_running"):
604
dbus.Boolean(self.checker is not None,
605
variant_level=1),
606
dbus.String(u"object_path"):
607
dbus.ObjectPath(self.dbus_object_path,
608
variant_level=1)
609
}, signature=u"sv")
610
611
# IsStillValid - method
612
@dbus.service.method(_interface, out_signature=u"b")
613
def IsStillValid(self):
614
return self.still_valid()
615
616
# PropertyChanged - signal
617
@dbus.service.signal(_interface, signature=u"sv")
618
def PropertyChanged(self, property, value):
619
"D-Bus signal"
620
pass
621
622
# ReceivedSecret - signal
623
@dbus.service.signal(_interface)
624
def ReceivedSecret(self):
625
"D-Bus signal"
626
pass
627
628
# Rejected - signal
629
@dbus.service.signal(_interface)
630
def Rejected(self):
631
"D-Bus signal"
632
pass
633
634
# SetChecker - method
635
@dbus.service.method(_interface, in_signature=u"s")
636
def SetChecker(self, checker):
637
"D-Bus setter method"
638
self.checker_command = checker
639
# Emit D-Bus signal
640
self.PropertyChanged(dbus.String(u"checker"),
641
dbus.String(self.checker_command,
642
variant_level=1))
643
644
# SetHost - method
645
@dbus.service.method(_interface, in_signature=u"s")
646
def SetHost(self, host):
647
"D-Bus setter method"
648
self.host = host
649
# Emit D-Bus signal
650
self.PropertyChanged(dbus.String(u"host"),
651
dbus.String(self.host, variant_level=1))
652
653
# SetInterval - method
654
@dbus.service.method(_interface, in_signature=u"t")
655
def SetInterval(self, milliseconds):
656
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
657
# Emit D-Bus signal
658
self.PropertyChanged(dbus.String(u"interval"),
659
(dbus.UInt64(self.interval_milliseconds(),
660
variant_level=1)))
661
662
# SetSecret - method
663
@dbus.service.method(_interface, in_signature=u"ay",
664
byte_arrays=True)
665
def SetSecret(self, secret):
666
"D-Bus setter method"
667
self.secret = str(secret)
668
669
# SetTimeout - method
670
@dbus.service.method(_interface, in_signature=u"t")
671
def SetTimeout(self, milliseconds):
672
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
673
# Emit D-Bus signal
674
self.PropertyChanged(dbus.String(u"timeout"),
675
(dbus.UInt64(self.timeout_milliseconds(),
676
variant_level=1)))
677
678
# Enable - method
679
@dbus.service.method(_interface)
680
def Enable(self):
681
"D-Bus method"
682
self.enable()
683
684
# StartChecker - method
685
@dbus.service.method(_interface)
686
def StartChecker(self):
687
"D-Bus method"
688
self.start_checker()
689
690
# Disable - method
691
@dbus.service.method(_interface)
692
def Disable(self):
693
"D-Bus method"
694
self.disable()
695
696
# StopChecker - method
697
@dbus.service.method(_interface)
698
def StopChecker(self):
699
self.stop_checker()
700
701
del _interface
702
703
704
class ClientHandler(socketserver.BaseRequestHandler, object):
705
"""A class to handle client connections.
706
707
Instantiated once for each connection to handle it.
259
return now < (self.last_seen + self.timeout)
260
261
262
def peer_certificate(session):
263
"Return an OpenPGP data packet string for the peer's certificate"
264
# If not an OpenPGP certificate...
265
if gnutls.library.functions.gnutls_certificate_type_get\
266
(session._c_object) \
267
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
268
# ...do the normal thing
269
return session.peer_certificate
270
list_size = ctypes.c_uint()
271
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
272
(session._c_object, ctypes.byref(list_size))
273
if list_size.value == 0:
274
return None
275
cert = cert_list[0]
276
return ctypes.string_at(cert.data, cert.size)
277
278
279
def fingerprint(openpgp):
280
"Convert an OpenPGP data string to a hexdigit fingerprint string"
281
# New empty GnuTLS certificate
282
crt = gnutls.library.types.gnutls_openpgp_crt_t()
283
gnutls.library.functions.gnutls_openpgp_crt_init\
284
(ctypes.byref(crt))
285
# New GnuTLS "datum" with the OpenPGP public key
286
datum = gnutls.library.types.gnutls_datum_t\
287
(ctypes.cast(ctypes.c_char_p(openpgp),
288
ctypes.POINTER(ctypes.c_ubyte)),
289
ctypes.c_uint(len(openpgp)))
290
# Import the OpenPGP public key into the certificate
291
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
292
(crt,
293
ctypes.byref(datum),
294
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
295
# New buffer for the fingerprint
296
buffer = ctypes.create_string_buffer(20)
297
buffer_length = ctypes.c_size_t()
298
# Get the fingerprint from the certificate into the buffer
299
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
300
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
301
# Deinit the certificate
302
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
303
# Convert the buffer to a Python bytestring
304
fpr = ctypes.string_at(buffer, buffer_length.value)
305
# Convert the bytestring to hexadecimal notation
306
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
307
return hex_fpr
308
309
310
class tcp_handler(SocketServer.BaseRequestHandler, object):
311
"""A TCP request handler class.
312
Instantiated by IPv6_TCPServer for each request to handle it.
708
313
Note: This will run in its own forked process."""
709
314
710
315
def handle(self):
711
logger.info(u"TCP connection from: %s",
712
unicode(self.client_address))
713
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
714
# Open IPC pipe to parent process
715
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
716
session = (gnutls.connection
717
.ClientSession(self.request,
718
gnutls.connection
719
.X509Credentials()))
720
721
line = self.request.makefile().readline()
722
logger.debug(u"Protocol version: %r", line)
723
try:
724
if int(line.strip().split()[0]) > 1:
725
raise RuntimeError
726
except (ValueError, IndexError, RuntimeError), error:
727
logger.error(u"Unknown protocol version: %s", error)
728
return
729
730
# Note: gnutls.connection.X509Credentials is really a
731
# generic GnuTLS certificate credentials object so long as
732
# no X.509 keys are added to it. Therefore, we can use it
733
# here despite using OpenPGP certificates.
734
735
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
736
# u"+AES-256-CBC", u"+SHA1",
737
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
738
# u"+DHE-DSS"))
739
# Use a fallback default, since this MUST be set.
740
priority = self.server.gnutls_priority
741
if priority is None:
742
priority = u"NORMAL"
743
(gnutls.library.functions
744
.gnutls_priority_set_direct(session._c_object,
745
priority, None))
746
747
try:
748
session.handshake()
749
except gnutls.errors.GNUTLSError, error:
750
logger.warning(u"Handshake failed: %s", error)
751
# Do not run session.bye() here: the session is not
752
# established. Just abandon the request.
753
return
754
logger.debug(u"Handshake succeeded")
755
try:
756
fpr = self.fingerprint(self.peer_certificate(session))
757
except (TypeError, gnutls.errors.GNUTLSError), error:
758
logger.warning(u"Bad certificate: %s", error)
759
session.bye()
760
return
761
logger.debug(u"Fingerprint: %s", fpr)
762
763
for c in self.server.clients:
764
if c.fingerprint == fpr:
765
client = c
766
break
316
logger.debug(u"TCP connection from: %s",
317
unicode(self.client_address))
318
session = gnutls.connection.ClientSession(self.request,
319
gnutls.connection.\
320
X509Credentials())
321
322
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
323
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
324
# "+DHE-DSS"))
325
priority = "SECURE256"
326
327
gnutls.library.functions.gnutls_priority_set_direct\
328
(session._c_object, priority, None);
329
330
try:
331
session.handshake()
332
except gnutls.errors.GNUTLSError, error:
333
logger.debug(u"Handshake failed: %s", error)
334
# Do not run session.bye() here: the session is not
335
# established. Just abandon the request.
336
return
337
try:
338
fpr = fingerprint(peer_certificate(session))
339
except (TypeError, gnutls.errors.GNUTLSError), error:
340
logger.debug(u"Bad certificate: %s", error)
341
session.bye()
342
return
343
logger.debug(u"Fingerprint: %s", fpr)
344
client = None
345
for c in clients:
346
if c.fingerprint == fpr:
347
client = c
348
break
349
# Have to check if client.still_valid(), since it is possible
350
# that the client timed out while establishing the GnuTLS
351
# session.
352
if (not client) or (not client.still_valid()):
353
if client:
354
logger.debug(u"Client %(name)s is invalid",
355
vars(client))
767
356
else:
768
ipc.write(u"NOTFOUND %s\n" % fpr)
769
session.bye()
770
return
771
# Have to check if client.still_valid(), since it is
772
# possible that the client timed out while establishing
773
# the GnuTLS session.
774
if not client.still_valid():
775
ipc.write(u"INVALID %s\n" % client.name)
776
session.bye()
777
return
778
ipc.write(u"SENDING %s\n" % client.name)
779
sent_size = 0
780
while sent_size < len(client.secret):
781
sent = session.send(client.secret[sent_size:])
782
logger.debug(u"Sent: %d, remaining: %d",
783
sent, len(client.secret)
784
- (sent_size + sent))
785
sent_size += sent
357
logger.debug(u"Client not found for fingerprint: %s",
358
fpr)
786
359
session.bye()
787
788
@staticmethod
789
def peer_certificate(session):
790
"Return the peer's OpenPGP certificate as a bytestring"
791
# If not an OpenPGP certificate...
792
if (gnutls.library.functions
793
.gnutls_certificate_type_get(session._c_object)
794
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
795
# ...do the normal thing
796
return session.peer_certificate
797
list_size = ctypes.c_uint(1)
798
cert_list = (gnutls.library.functions
799
.gnutls_certificate_get_peers
800
(session._c_object, ctypes.byref(list_size)))
801
if not bool(cert_list) and list_size.value != 0:
802
raise gnutls.errors.GNUTLSError(u"error getting peer"
803
u" certificate")
804
if list_size.value == 0:
805
return None
806
cert = cert_list[0]
807
return ctypes.string_at(cert.data, cert.size)
808
809
@staticmethod
810
def fingerprint(openpgp):
811
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
812
# New GnuTLS "datum" with the OpenPGP public key
813
datum = (gnutls.library.types
814
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
815
ctypes.POINTER
816
(ctypes.c_ubyte)),
817
ctypes.c_uint(len(openpgp))))
818
# New empty GnuTLS certificate
819
crt = gnutls.library.types.gnutls_openpgp_crt_t()
820
(gnutls.library.functions
821
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
822
# Import the OpenPGP public key into the certificate
823
(gnutls.library.functions
824
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
825
gnutls.library.constants
826
.GNUTLS_OPENPGP_FMT_RAW))
827
# Verify the self signature in the key
828
crtverify = ctypes.c_uint()
829
(gnutls.library.functions
830
.gnutls_openpgp_crt_verify_self(crt, 0,
831
ctypes.byref(crtverify)))
832
if crtverify.value != 0:
833
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
834
raise (gnutls.errors.CertificateSecurityError
835
(u"Verify failed"))
836
# New buffer for the fingerprint
837
buf = ctypes.create_string_buffer(20)
838
buf_len = ctypes.c_size_t()
839
# Get the fingerprint from the certificate into the buffer
840
(gnutls.library.functions
841
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
842
ctypes.byref(buf_len)))
843
# Deinit the certificate
844
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
845
# Convert the buffer to a Python bytestring
846
fpr = ctypes.string_at(buf, buf_len.value)
847
# Convert the bytestring to hexadecimal notation
848
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
849
return hex_fpr
850
851
852
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
853
"""Like socketserver.ForkingMixIn, but also pass a pipe.
854
855
Assumes a gobject.MainLoop event loop.
856
"""
857
def process_request(self, request, client_address):
858
"""Overrides and wraps the original process_request().
859
860
This function creates a new pipe in self.pipe
861
"""
862
self.pipe = os.pipe()
863
super(ForkingMixInWithPipe,
864
self).process_request(request, client_address)
865
os.close(self.pipe[1]) # close write end
866
# Call "handle_ipc" for both data and EOF events
867
gobject.io_add_watch(self.pipe[0],
868
gobject.IO_IN | gobject.IO_HUP,
869
self.handle_ipc)
870
def handle_ipc(source, condition):
871
"""Dummy function; override as necessary"""
872
os.close(source)
873
return False
874
875
876
class IPv6_TCPServer(ForkingMixInWithPipe,
877
socketserver.TCPServer, object):
878
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
879
360
return
361
sent_size = 0
362
while sent_size < len(client.secret):
363
sent = session.send(client.secret[sent_size:])
364
logger.debug(u"Sent: %d, remaining: %d",
365
sent, len(client.secret)
366
- (sent_size + sent))
367
sent_size += sent
368
session.bye()
369
370
371
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
372
"""IPv6 TCP server. Accepts 'None' as address and/or port.
880
373
Attributes:
881
enabled: Boolean; whether this server is activated yet
882
interface: None or a network interface name (string)
883
use_ipv6: Boolean; to use IPv6 or not
884
----
885
clients: set of Client objects
886
gnutls_priority GnuTLS priority string
887
use_dbus: Boolean; to emit D-Bus signals or not
374
options: Command line options
375
clients: Set() of Client objects
888
376
"""
889
def __init__(self, server_address, RequestHandlerClass,
890
interface=None, use_ipv6=True, clients=None,
891
gnutls_priority=None, use_dbus=True):
892
self.enabled = False
893
self.interface = interface
894
if use_ipv6:
895
self.address_family = socket.AF_INET6
896
self.clients = clients
897
self.use_dbus = use_dbus
898
self.gnutls_priority = gnutls_priority
899
socketserver.TCPServer.__init__(self, server_address,
900
RequestHandlerClass)
377
address_family = socket.AF_INET6
378
def __init__(self, *args, **kwargs):
379
if "options" in kwargs:
380
self.options = kwargs["options"]
381
del kwargs["options"]
382
if "clients" in kwargs:
383
self.clients = kwargs["clients"]
384
del kwargs["clients"]
385
return super(type(self), self).__init__(*args, **kwargs)
901
386
def server_bind(self):
902
387
"""This overrides the normal server_bind() function
903
388
to bind to an interface if one was specified, and also NOT to
904
389
bind to an address or port if they were not specified."""
905
if self.interface is not None:
390
if self.options.interface:
391
if not hasattr(socket, "SO_BINDTODEVICE"):
392
# From /usr/include/asm-i486/socket.h
393
socket.SO_BINDTODEVICE = 25
906
394
try:
907
395
self.socket.setsockopt(socket.SOL_SOCKET,
908
SO_BINDTODEVICE,
909
str(self.interface + u'\0'))
396
socket.SO_BINDTODEVICE,
397
self.options.interface)
910
398
except socket.error, error:
911
399
if error[0] == errno.EPERM:
912
logger.error(u"No permission to"
913
u" bind to interface %s",
914
self.interface)
400
logger.warning(u"No permission to"
401
u" bind to interface %s",
402
self.options.interface)
915
403
else:
916
raise
404
raise error
917
405
# Only bind(2) the socket if we really need to.
918
406
if self.server_address[0] or self.server_address[1]:
919
407
if not self.server_address[0]:
920
if self.address_family == socket.AF_INET6:
921
any_address = u"::" # in6addr_any
922
else:
923
any_address = socket.INADDR_ANY
924
self.server_address = (any_address,
408
in6addr_any = "::"
409
self.server_address = (in6addr_any,
925
410
self.server_address[1])
926
elif not self.server_address[1]:
411
elif self.server_address[1] is None:
927
412
self.server_address = (self.server_address[0],
928
413
0)
929
# if self.interface:
930
# self.server_address = (self.server_address[0],
931
# 0, # port
932
# 0, # flowinfo
933
# if_nametoindex
934
# (self.interface))
935
return socketserver.TCPServer.server_bind(self)
936
def server_activate(self):
937
if self.enabled:
938
return socketserver.TCPServer.server_activate(self)
939
def enable(self):
940
self.enabled = True
941
def handle_ipc(self, source, condition, file_objects={}):
942
condition_names = {
943
gobject.IO_IN: u"IN", # There is data to read.
944
gobject.IO_OUT: u"OUT", # Data can be written (without
945
# blocking).
946
gobject.IO_PRI: u"PRI", # There is urgent data to read.
947
gobject.IO_ERR: u"ERR", # Error condition.
948
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
949
# broken, usually for pipes and
950
# sockets).
951
}
952
conditions_string = ' | '.join(name
953
for cond, name in
954
condition_names.iteritems()
955
if cond & condition)
956
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
957
conditions_string)
958
959
# Turn the pipe file descriptor into a Python file object
960
if source not in file_objects:
961
file_objects[source] = os.fdopen(source, u"r", 1)
962
963
# Read a line from the file object
964
cmdline = file_objects[source].readline()
965
if not cmdline: # Empty line means end of file
966
# close the IPC pipe
967
file_objects[source].close()
968
del file_objects[source]
969
970
# Stop calling this function
971
return False
972
973
logger.debug(u"IPC command: %r", cmdline)
974
975
# Parse and act on command
976
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
977
978
if cmd == u"NOTFOUND":
979
logger.warning(u"Client not found for fingerprint: %s",
980
args)
981
if self.use_dbus:
982
# Emit D-Bus signal
983
mandos_dbus_service.ClientNotFound(args)
984
elif cmd == u"INVALID":
985
for client in self.clients:
986
if client.name == args:
987
logger.warning(u"Client %s is invalid", args)
988
if self.use_dbus:
989
# Emit D-Bus signal
990
client.Rejected()
991
break
992
else:
993
logger.error(u"Unknown client %s is invalid", args)
994
elif cmd == u"SENDING":
995
for client in self.clients:
996
if client.name == args:
997
logger.info(u"Sending secret to %s", client.name)
998
client.checked_ok()
999
if self.use_dbus:
1000
# Emit D-Bus signal
1001
client.ReceivedSecret()
1002
break
1003
else:
1004
logger.error(u"Sending secret to unknown client %s",
1005
args)
1006
else:
1007
logger.error(u"Unknown IPC command: %r", cmdline)
1008
1009
# Keep calling this function
1010
return True
414
return super(type(self), self).server_bind()
1011
415
1012
416
1013
417
def string_to_delta(interval):
1014
418
"""Parse a string and return a datetime.timedelta
1015
1016
>>> string_to_delta(u'7d')
419
420
>>> string_to_delta('7d')
1017
421
datetime.timedelta(7)
1018
>>> string_to_delta(u'60s')
422
>>> string_to_delta('60s')
1019
423
datetime.timedelta(0, 60)
1020
>>> string_to_delta(u'60m')
424
>>> string_to_delta('60m')
1021
425
datetime.timedelta(0, 3600)
1022
>>> string_to_delta(u'24h')
426
>>> string_to_delta('24h')
1023
427
datetime.timedelta(1)
1024
428
>>> string_to_delta(u'1w')
1025
429
datetime.timedelta(7)
1026
>>> string_to_delta(u'5m 30s')
1027
datetime.timedelta(0, 330)
1028
430
"""
1029
timevalue = datetime.timedelta(0)
1030
for s in interval.split():
1031
try:
1032
suffix = unicode(s[-1])
1033
value = int(s[:-1])
1034
if suffix == u"d":
1035
delta = datetime.timedelta(value)
1036
elif suffix == u"s":
1037
delta = datetime.timedelta(0, value)
1038
elif suffix == u"m":
1039
delta = datetime.timedelta(0, 0, 0, 0, value)
1040
elif suffix == u"h":
1041
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1042
elif suffix == u"w":
1043
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1044
else:
1045
raise ValueError
1046
except (ValueError, IndexError):
431
try:
432
suffix=unicode(interval[-1])
433
value=int(interval[:-1])
434
if suffix == u"d":
435
delta = datetime.timedelta(value)
436
elif suffix == u"s":
437
delta = datetime.timedelta(0, value)
438
elif suffix == u"m":
439
delta = datetime.timedelta(0, 0, 0, 0, value)
440
elif suffix == u"h":
441
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
442
elif suffix == u"w":
443
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
444
else:
1047
445
raise ValueError
1048
timevalue += delta
1049
return timevalue
446
except (ValueError, IndexError):
447
raise ValueError
448
return delta
449
450
451
def add_service():
452
"""From the Avahi server example code"""
453
global group, serviceName, serviceType, servicePort, serviceTXT, \
454
domain, host
455
if group is None:
456
group = dbus.Interface(
457
bus.get_object( avahi.DBUS_NAME,
458
server.EntryGroupNew()),
459
avahi.DBUS_INTERFACE_ENTRY_GROUP)
460
group.connect_to_signal('StateChanged',
461
entry_group_state_changed)
462
logger.debug(u"Adding service '%s' of type '%s' ...",
463
serviceName, serviceType)
464
465
group.AddService(
466
serviceInterface, # interface
467
avahi.PROTO_INET6, # protocol
468
dbus.UInt32(0), # flags
469
serviceName, serviceType,
470
domain, host,
471
dbus.UInt16(servicePort),
472
avahi.string_array_to_txt_array(serviceTXT))
473
group.Commit()
474
475
476
def remove_service():
477
"""From the Avahi server example code"""
478
global group
479
480
if not group is None:
481
group.Reset()
1050
482
1051
483
1052
484
def server_state_changed(state):
1053
"""Derived from the Avahi example code"""
485
"""From the Avahi server example code"""
1054
486
if state == avahi.SERVER_COLLISION:
1055
logger.error(u"Zeroconf server name collision")
1056
service.remove()
487
logger.warning(u"Server name collision")
488
remove_service()
1057
489
elif state == avahi.SERVER_RUNNING:
1058
service.add()
490
add_service()
1059
491
1060
492
1061
493
def entry_group_state_changed(state, error):
1062
"""Derived from the Avahi example code"""
1063
logger.debug(u"Avahi state change: %i", state)
494
"""From the Avahi server example code"""
495
global serviceName, server, rename_count
496
497
logger.debug(u"state change: %i", state)
1064
498
1065
499
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1066
logger.debug(u"Zeroconf service established.")
500
logger.debug(u"Service established.")
1067
501
elif state == avahi.ENTRY_GROUP_COLLISION:
1068
logger.warning(u"Zeroconf service name collision.")
1069
service.rename()
502
503
rename_count = rename_count - 1
504
if rename_count > 0:
505
name = server.GetAlternativeServiceName(name)
506
logger.warning(u"Service name collision, "
507
u"changing name to '%s' ...", name)
508
remove_service()
509
add_service()
510
511
else:
512
logger.error(u"No suitable service name found after %i"
513
u" retries, exiting.", n_rename)
514
killme(1)
1070
515
elif state == avahi.ENTRY_GROUP_FAILURE:
1071
logger.critical(u"Avahi: Error in group state changed %s",
1072
unicode(error))
1073
raise AvahiGroupError(u"State changed: %s" % unicode(error))
516
logger.error(u"Error in group state changed %s",
517
unicode(error))
518
killme(1)
519
1074
520
1075
521
def if_nametoindex(interface):
1076
"""Call the C function if_nametoindex(), or equivalent
1077
1078
Note: This function cannot accept a unicode string."""
1079
global if_nametoindex
522
"""Call the C function if_nametoindex()"""
1080
523
try:
1081
if_nametoindex = (ctypes.cdll.LoadLibrary
1082
(ctypes.util.find_library(u"c"))
1083
.if_nametoindex)
524
libc = ctypes.cdll.LoadLibrary("libc.so.6")
525
return libc.if_nametoindex(interface)
1084
526
except (OSError, AttributeError):
1085
logger.warning(u"Doing if_nametoindex the hard way")
1086
def if_nametoindex(interface):
1087
"Get an interface index the hard way, i.e. using fcntl()"
1088
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1089
with closing(socket.socket()) as s:
1090
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1091
struct.pack(str(u"16s16x"),
1092
interface))
1093
interface_index = struct.unpack(str(u"I"),
1094
ifreq[16:20])[0]
1095
return interface_index
1096
return if_nametoindex(interface)
1097
1098
1099
def daemon(nochdir = False, noclose = False):
527
if "struct" not in sys.modules:
528
import struct
529
if "fcntl" not in sys.modules:
530
import fcntl
531
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
532
s = socket.socket()
533
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
534
struct.pack("16s16x", interface))
535
s.close()
536
interface_index = struct.unpack("I", ifreq[16:20])[0]
537
return interface_index
538
539
540
def daemon(nochdir, noclose):
1100
541
"""See daemon(3). Standard BSD Unix function.
1101
1102
542
This should really exist as os.daemon, but it doesn't (yet)."""
1103
543
if os.fork():
1104
544
sys.exit()
1105
545
os.setsid()
1106
546
if not nochdir:
1107
os.chdir(u"/")
1108
if os.fork():
1109
sys.exit()
547
os.chdir("/")
1110
548
if not noclose:
1111
549
# Close all standard open file descriptors
1112
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
550
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
1113
551
if not stat.S_ISCHR(os.fstat(null).st_mode):
1114
552
raise OSError(errno.ENODEV,
1115
u"/dev/null not a character device")
553
"/dev/null not a character device")
1116
554
os.dup2(null, sys.stdin.fileno())
1117
555
os.dup2(null, sys.stdout.fileno())
1118
556
os.dup2(null, sys.stderr.fileno())
1120
558
os.close(null)
1121
559
1122
560
1123
def main():
1124
1125
######################################################################
1126
# Parsing of options, both command line and config file
1127
1128
parser = optparse.OptionParser(version = "%%prog %s" % version)
1129
parser.add_option("-i", u"--interface", type=u"string",
1130
metavar="IF", help=u"Bind to interface IF")
1131
parser.add_option("-a", u"--address", type=u"string",
1132
help=u"Address to listen for requests on")
1133
parser.add_option("-p", u"--port", type=u"int",
1134
help=u"Port number to receive requests on")
1135
parser.add_option("--check", action=u"store_true",
1136
help=u"Run self-test")
1137
parser.add_option("--debug", action=u"store_true",
1138
help=u"Debug mode; run in foreground and log to"
1139
u" terminal")
1140
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1141
u" priority string (see GnuTLS documentation)")
1142
parser.add_option("--servicename", type=u"string",
1143
metavar=u"NAME", help=u"Zeroconf service name")
1144
parser.add_option("--configdir", type=u"string",
1145
default=u"/etc/mandos", metavar=u"DIR",
1146
help=u"Directory to search for configuration"
1147
u" files")
1148
parser.add_option("--no-dbus", action=u"store_false",
1149
dest=u"use_dbus", help=u"Do not provide D-Bus"
1150
u" system bus interface")
1151
parser.add_option("--no-ipv6", action=u"store_false",
1152
dest=u"use_ipv6", help=u"Do not use IPv6")
1153
options = parser.parse_args()[0]
561
def killme(status = 0):
562
logger.debug("Stopping server with exit status %d", status)
563
exitstatus = status
564
if main_loop_started:
565
main_loop.quit()
566
else:
567
sys.exit(status)
568
569
570
if __name__ == '__main__':
571
exitstatus = 0
572
main_loop_started = False
573
parser = OptionParser()
574
parser.add_option("-i", "--interface", type="string",
575
default=None, metavar="IF",
576
help="Bind to interface IF")
577
parser.add_option("-p", "--port", type="int", default=None,
578
help="Port number to receive requests on")
579
parser.add_option("--timeout", type="string", # Parsed later
580
default="1h",
581
help="Amount of downtime allowed for clients")
582
parser.add_option("--interval", type="string", # Parsed later
583
default="5m",
584
help="How often to check that a client is up")
585
parser.add_option("--check", action="store_true", default=False,
586
help="Run self-test")
587
parser.add_option("--debug", action="store_true", default=False,
588
help="Debug mode")
589
(options, args) = parser.parse_args()
1154
590
1155
591
if options.check:
1156
592
import doctest
1157
593
doctest.testmod()
1158
594
sys.exit()
1159
595
1160
# Default values for config file for server-global settings
1161
server_defaults = { u"interface": u"",
1162
u"address": u"",
1163
u"port": u"",
1164
u"debug": u"False",
1165
u"priority":
1166
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1167
u"servicename": u"Mandos",
1168
u"use_dbus": u"True",
1169
u"use_ipv6": u"True",
1170
}
1171
1172
# Parse config file for server-global settings
1173
server_config = configparser.SafeConfigParser(server_defaults)
1174
del server_defaults
1175
server_config.read(os.path.join(options.configdir,
1176
u"mandos.conf"))
1177
# Convert the SafeConfigParser object to a dict
1178
server_settings = server_config.defaults()
1179
# Use the appropriate methods on the non-string config options
1180
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1181
server_settings[option] = server_config.getboolean(u"DEFAULT",
1182
option)
1183
if server_settings["port"]:
1184
server_settings["port"] = server_config.getint(u"DEFAULT",
1185
u"port")
1186
del server_config
1187
1188
# Override the settings from the config file with command line
1189
# options, if set.
1190
for option in (u"interface", u"address", u"port", u"debug",
1191
u"priority", u"servicename", u"configdir",
1192
u"use_dbus", u"use_ipv6"):
1193
value = getattr(options, option)
1194
if value is not None:
1195
server_settings[option] = value
1196
del options
1197
# Force all strings to be unicode
1198
for option in server_settings.keys():
1199
if type(server_settings[option]) is str:
1200
server_settings[option] = unicode(server_settings[option])
1201
# Now we have our good server settings in "server_settings"
1202
1203
##################################################################
1204
1205
# For convenience
1206
debug = server_settings[u"debug"]
1207
use_dbus = server_settings[u"use_dbus"]
1208
use_ipv6 = server_settings[u"use_ipv6"]
1209
1210
if not debug:
1211
syslogger.setLevel(logging.WARNING)
1212
console.setLevel(logging.WARNING)
1213
1214
if server_settings[u"servicename"] != u"Mandos":
1215
syslogger.setFormatter(logging.Formatter
1216
(u'Mandos (%s) [%%(process)d]:'
1217
u' %%(levelname)s: %%(message)s'
1218
% server_settings[u"servicename"]))
1219
1220
# Parse config file with clients
1221
client_defaults = { u"timeout": u"1h",
1222
u"interval": u"5m",
1223
u"checker": u"fping -q -- %%(host)s",
1224
u"host": u"",
1225
}
1226
client_config = configparser.SafeConfigParser(client_defaults)
1227
client_config.read(os.path.join(server_settings[u"configdir"],
1228
u"clients.conf"))
1229
1230
global mandos_dbus_service
1231
mandos_dbus_service = None
1232
1233
clients = set()
1234
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1235
server_settings[u"port"]),
1236
ClientHandler,
1237
interface=
1238
server_settings[u"interface"],
1239
use_ipv6=use_ipv6,
1240
clients=clients,
1241
gnutls_priority=
1242
server_settings[u"priority"],
1243
use_dbus=use_dbus)
1244
pidfilename = u"/var/run/mandos.pid"
1245
try:
1246
pidfile = open(pidfilename, u"w")
1247
except IOError:
1248
logger.error(u"Could not open file %r", pidfilename)
1249
1250
try:
1251
uid = pwd.getpwnam(u"_mandos").pw_uid
1252
gid = pwd.getpwnam(u"_mandos").pw_gid
1253
except KeyError:
1254
try:
1255
uid = pwd.getpwnam(u"mandos").pw_uid
1256
gid = pwd.getpwnam(u"mandos").pw_gid
1257
except KeyError:
1258
try:
1259
uid = pwd.getpwnam(u"nobody").pw_uid
1260
gid = pwd.getpwnam(u"nobody").pw_gid
1261
except KeyError:
1262
uid = 65534
1263
gid = 65534
1264
try:
1265
os.setgid(gid)
1266
os.setuid(uid)
1267
except OSError, error:
1268
if error[0] != errno.EPERM:
1269
raise error
1270
1271
# Enable all possible GnuTLS debugging
1272
if debug:
1273
# "Use a log level over 10 to enable all debugging options."
1274
# - GnuTLS manual
1275
gnutls.library.functions.gnutls_global_set_log_level(11)
1276
1277
@gnutls.library.types.gnutls_log_func
1278
def debug_gnutls(level, string):
1279
logger.debug(u"GnuTLS: %s", string[:-1])
1280
1281
(gnutls.library.functions
1282
.gnutls_global_set_log_function(debug_gnutls))
1283
1284
global service
1285
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1286
service = AvahiService(name = server_settings[u"servicename"],
1287
servicetype = u"_mandos._tcp",
1288
protocol = protocol)
1289
if server_settings["interface"]:
1290
service.interface = (if_nametoindex
1291
(str(server_settings[u"interface"])))
1292
1293
global main_loop
1294
global bus
1295
global server
1296
# From the Avahi example code
596
# Parse the time arguments
597
try:
598
options.timeout = string_to_delta(options.timeout)
599
except ValueError:
600
parser.error("option --timeout: Unparseable time")
601
try:
602
options.interval = string_to_delta(options.interval)
603
except ValueError:
604
parser.error("option --interval: Unparseable time")
605
606
# Parse config file
607
defaults = { "checker": "fping -q -- %%(fqdn)s" }
608
client_config = ConfigParser.SafeConfigParser(defaults)
609
#client_config.readfp(open("secrets.conf"), "secrets.conf")
610
client_config.read("mandos-clients.conf")
611
612
# From the Avahi server example code
1297
613
DBusGMainLoop(set_as_default=True )
1298
614
main_loop = gobject.MainLoop()
1299
615
bus = dbus.SystemBus()
1300
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1301
avahi.DBUS_PATH_SERVER),
1302
avahi.DBUS_INTERFACE_SERVER)
616
server = dbus.Interface(
617
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
618
avahi.DBUS_INTERFACE_SERVER )
1303
619
# End of Avahi example code
1304
if use_dbus:
1305
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1306
620
1307
client_class = Client
1308
if use_dbus:
1309
client_class = ClientDBus
1310
clients.update(set(
1311
client_class(name = section,
1312
config= dict(client_config.items(section)))
1313
for section in client_config.sections()))
1314
if not clients:
1315
logger.warning(u"No clients defined")
621
debug = options.debug
1316
622
1317
623
if debug:
1318
# Redirect stdin so all checkers get /dev/null
1319
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1320
os.dup2(null, sys.stdin.fileno())
1321
if null > 2:
1322
os.close(null)
1323
else:
1324
# No console logging
1325
logger.removeHandler(console)
1326
# Close all input and output, do double fork, etc.
1327
daemon()
1328
1329
try:
1330
with closing(pidfile):
1331
pid = os.getpid()
1332
pidfile.write(str(pid) + "\n")
1333
del pidfile
1334
except IOError:
1335
logger.error(u"Could not write to file %r with PID %d",
1336
pidfilename, pid)
1337
except NameError:
1338
# "pidfile" was never created
1339
pass
1340
del pidfilename
624
console = logging.StreamHandler()
625
# console.setLevel(logging.DEBUG)
626
console.setFormatter(logging.Formatter\
627
('%(levelname)s: %(message)s'))
628
logger.addHandler(console)
629
del console
630
631
clients = Set()
632
def remove_from_clients(client):
633
clients.remove(client)
634
if not clients:
635
logger.debug(u"No clients left, exiting")
636
killme()
637
638
clients.update(Set(Client(name=section, options=options,
639
stop_hook = remove_from_clients,
640
**(dict(client_config\
641
.items(section))))
642
for section in client_config.sections()))
643
644
if not debug:
645
daemon(False, False)
1341
646
1342
647
def cleanup():
1343
648
"Cleanup function; run on exit"
1344
649
global group
1345
# From the Avahi example code
650
# From the Avahi server example code
1346
651
if not group is None:
1347
652
group.Free()
1348
653
group = None
1349
654
# End of Avahi example code
1350
655
1351
while clients:
1352
client = clients.pop()
1353
client.disable_hook = None
1354
client.disable()
656
for client in clients:
657
client.stop_hook = None
658
client.stop()
1355
659
1356
660
atexit.register(cleanup)
1357
661
1358
662
if not debug:
1359
663
signal.signal(signal.SIGINT, signal.SIG_IGN)
1360
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1361
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1362
1363
if use_dbus:
1364
class MandosDBusService(dbus.service.Object):
1365
"""A D-Bus proxy object"""
1366
def __init__(self):
1367
dbus.service.Object.__init__(self, bus, u"/")
1368
_interface = u"se.bsnet.fukt.Mandos"
1369
1370
@dbus.service.signal(_interface, signature=u"oa{sv}")
1371
def ClientAdded(self, objpath, properties):
1372
"D-Bus signal"
1373
pass
1374
1375
@dbus.service.signal(_interface, signature=u"s")
1376
def ClientNotFound(self, fingerprint):
1377
"D-Bus signal"
1378
pass
1379
1380
@dbus.service.signal(_interface, signature=u"os")
1381
def ClientRemoved(self, objpath, name):
1382
"D-Bus signal"
1383
pass
1384
1385
@dbus.service.method(_interface, out_signature=u"ao")
1386
def GetAllClients(self):
1387
"D-Bus method"
1388
return dbus.Array(c.dbus_object_path for c in clients)
1389
1390
@dbus.service.method(_interface,
1391
out_signature=u"a{oa{sv}}")
1392
def GetAllClientsWithProperties(self):
1393
"D-Bus method"
1394
return dbus.Dictionary(
1395
((c.dbus_object_path, c.GetAllProperties())
1396
for c in clients),
1397
signature=u"oa{sv}")
1398
1399
@dbus.service.method(_interface, in_signature=u"o")
1400
def RemoveClient(self, object_path):
1401
"D-Bus method"
1402
for c in clients:
1403
if c.dbus_object_path == object_path:
1404
clients.remove(c)
1405
c.remove_from_connection()
1406
# Don't signal anything except ClientRemoved
1407
c.disable(signal=False)
1408
# Emit D-Bus signal
1409
self.ClientRemoved(object_path, c.name)
1410
return
1411
raise KeyError
1412
1413
del _interface
1414
1415
mandos_dbus_service = MandosDBusService()
664
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
665
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1416
666
1417
667
for client in clients:
1418
if use_dbus:
1419
# Emit D-Bus signal
1420
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1421
client.GetAllProperties())
1422
client.enable()
1423
1424
tcp_server.enable()
1425
tcp_server.server_activate()
1426
1427
# Find out what port we got
1428
service.port = tcp_server.socket.getsockname()[1]
1429
if use_ipv6:
1430
logger.info(u"Now listening on address %r, port %d,"
1431
" flowinfo %d, scope_id %d"
1432
% tcp_server.socket.getsockname())
1433
else: # IPv4
1434
logger.info(u"Now listening on address %r, port %d"
1435
% tcp_server.socket.getsockname())
1436
1437
#service.interface = tcp_server.socket.getsockname()[3]
1438
1439
try:
1440
# From the Avahi example code
1441
server.connect_to_signal(u"StateChanged", server_state_changed)
1442
try:
1443
server_state_changed(server.GetState())
1444
except dbus.exceptions.DBusException, error:
1445
logger.critical(u"DBusException: %s", error)
1446
sys.exit(1)
1447
# End of Avahi example code
1448
1449
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1450
lambda *args, **kwargs:
1451
(tcp_server.handle_request
1452
(*args[2:], **kwargs) or True))
1453
1454
logger.debug(u"Starting main loop")
668
client.start()
669
670
tcp_server = IPv6_TCPServer((None, options.port),
671
tcp_handler,
672
options=options,
673
clients=clients)
674
# Find out what random port we got
675
servicePort = tcp_server.socket.getsockname()[1]
676
logger.debug(u"Now listening on port %d", servicePort)
677
678
if options.interface is not None:
679
serviceInterface = if_nametoindex(options.interface)
680
681
# From the Avahi server example code
682
server.connect_to_signal("StateChanged", server_state_changed)
683
try:
684
server_state_changed(server.GetState())
685
except dbus.exceptions.DBusException, error:
686
logger.critical(u"DBusException: %s", error)
687
killme(1)
688
# End of Avahi example code
689
690
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
691
lambda *args, **kwargs:
692
tcp_server.handle_request(*args[2:],
693
**kwargs) or True)
694
try:
695
main_loop_started = True
1455
696
main_loop.run()
1456
except AvahiError, error:
1457
logger.critical(u"AvahiError: %s", error)
1458
sys.exit(1)
1459
697
except KeyboardInterrupt:
1460
698
if debug:
1461
print >> sys.stderr
1462
logger.debug(u"Server received KeyboardInterrupt")
1463
logger.debug(u"Server exiting")
1464
1465
if __name__ == '__main__':
1466
main()
699
print
700
701
sys.exit(exitstatus)
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0