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- Committer: Björn Påhlsson
- Date: 2008-07-21 03:58:36 UTC
- mfrom: (17 mandos)
- mto: This revision was merged to the branch mainline in revision 20.
- Revision ID: belorn@braxen-20080721035836-v7220bmolr608r61
Added getopt_long support for mandosclient and passprompt
Added support for --interface for mandosclient
Added support for --prefix for passprompt
Added support for --interface for mandosclient
Added support for --prefix for passprompt
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- clients.conf => mandos-clients.conf
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos => server.py
- files modified:
- Makefile
added
removed
server.py
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
9
# following functions: "add_service", "remove_service",
10
# "server_state_changed", "entry_group_state_changed", and some lines
11
# in "main".
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12
#
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
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# Påhlsson.
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15
#
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# This program is free software: you can redistribute it and/or modify
18
17
# it under the terms of the GNU General Public License as published by
25
24
# GNU General Public License for more details.
26
25
#
27
26
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
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
27
# along with this program. If not, see <http://www.gnu.org/licenses/>.
28
#
29
# Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
30
# <https://www.fukt.bsnet.se/~teddy/>.
31
#
32
33
from __future__ import division
34
35
import SocketServer
37
36
import socket
38
import optparse
37
import select
38
from optparse import OptionParser
39
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import datetime
40
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import errno
41
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import gnutls.crypto
44
44
import gnutls.library.functions
45
45
import gnutls.library.constants
46
46
import gnutls.library.types
47
import ConfigParser as configparser
47
import ConfigParser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
52
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import subprocess
53
54
import atexit
54
55
import stat
55
56
import logging
56
57
import logging.handlers
57
import pwd
58
from contextlib import closing
59
import struct
60
import fcntl
61
import functools
62
58
63
59
import dbus
64
import dbus.service
65
60
import gobject
66
61
import avahi
67
62
from dbus.mainloop.glib import DBusGMainLoop
68
63
import ctypes
69
import ctypes.util
70
71
try:
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
73
except AttributeError:
74
try:
75
from IN import SO_BINDTODEVICE
76
except ImportError:
77
# From /usr/include/asm/socket.h
78
SO_BINDTODEVICE = 25
79
80
81
version = "1.0.8"
82
83
logger = logging.Logger(u'mandos')
84
syslogger = (logging.handlers.SysLogHandler
85
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
86
address = "/dev/log"))
87
syslogger.setFormatter(logging.Formatter
88
(u'Mandos [%(process)d]: %(levelname)s:'
89
u' %(message)s'))
64
65
# Brief description of the operation of this program:
66
#
67
# This server announces itself as a Zeroconf service. Connecting
68
# clients use the TLS protocol, with the unusual quirk that this
69
# server program acts as a TLS "client" while the connecting clients
70
# acts as a TLS "server". The clients (acting as a TLS "server") must
71
# supply an OpenPGP certificate, and the fingerprint of this
72
# certificate is used by this server to look up (in a list read from a
73
# file at start time) which binary blob to give the client. No other
74
# authentication or authorization is done by this server.
75
76
77
logger = logging.Logger('mandos')
78
syslogger = logging.handlers.SysLogHandler\
79
(facility = logging.handlers.SysLogHandler.LOG_DAEMON)
80
syslogger.setFormatter(logging.Formatter\
81
('%(levelname)s: %(message)s'))
90
82
logger.addHandler(syslogger)
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console = logging.StreamHandler()
93
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
94
u' %(levelname)s:'
95
u' %(message)s'))
96
logger.addHandler(console)
97
98
class AvahiError(Exception):
99
def __init__(self, value, *args, **kwargs):
100
self.value = value
101
super(AvahiError, self).__init__(value, *args, **kwargs)
102
def __unicode__(self):
103
return unicode(repr(self.value))
104
105
class AvahiServiceError(AvahiError):
106
pass
107
108
class AvahiGroupError(AvahiError):
109
pass
110
111
112
class AvahiService(object):
113
"""An Avahi (Zeroconf) service.
114
115
Attributes:
116
interface: integer; avahi.IF_UNSPEC or an interface index.
117
Used to optionally bind to the specified interface.
118
name: string; Example: u'Mandos'
119
type: string; Example: u'_mandos._tcp'.
120
See <http://www.dns-sd.org/ServiceTypes.html>
121
port: integer; what port to announce
122
TXT: list of strings; TXT record for the service
123
domain: string; Domain to publish on, default to .local if empty.
124
host: string; Host to publish records for, default is localhost
125
max_renames: integer; maximum number of renames
126
rename_count: integer; counter so we only rename after collisions
127
a sensible number of times
128
group: D-Bus Entry Group
129
server: D-Bus Server
130
"""
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
132
servicetype = None, port = None, TXT = None,
133
domain = u"", host = u"", max_renames = 32768,
134
protocol = avahi.PROTO_UNSPEC, bus = None):
135
self.interface = interface
136
self.name = name
137
self.type = servicetype
138
self.port = port
139
self.TXT = TXT if TXT is not None else []
140
self.domain = domain
141
self.host = host
142
self.rename_count = 0
143
self.max_renames = max_renames
144
self.protocol = protocol
145
self.group = None # our entry group
146
self.server = None
147
self.bus = bus
148
def rename(self):
149
"""Derived from the Avahi example code"""
150
if self.rename_count >= self.max_renames:
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
153
self.rename_count)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
156
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
158
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
162
self.remove()
163
self.add()
164
self.rename_count += 1
165
def remove(self):
166
"""Derived from the Avahi example code"""
167
if self.group is not None:
168
self.group.Reset()
169
def add(self):
170
"""Derived from the Avahi example code"""
171
if self.group is None:
172
self.group = dbus.Interface(
173
self.bus.get_object(avahi.DBUS_NAME,
174
self.server.EntryGroupNew()),
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
179
self.name, self.type)
180
self.group.AddService(
181
self.interface,
182
self.protocol,
183
dbus.UInt32(0), # flags
184
self.name, self.type,
185
self.domain, self.host,
186
dbus.UInt16(self.port),
187
avahi.string_array_to_txt_array(self.TXT))
188
self.group.Commit()
189
def entry_group_state_changed(self, state, error):
190
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
192
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
195
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
197
self.rename()
198
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
200
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
203
def cleanup(self):
204
"""Derived from the Avahi example code"""
205
if self.group is not None:
206
self.group.Free()
207
self.group = None
208
def server_state_changed(self, state):
209
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
213
elif state == avahi.SERVER_RUNNING:
214
self.add()
215
def activate(self):
216
"""Derived from the Avahi example code"""
217
if self.server is None:
218
self.server = dbus.Interface(
219
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
221
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
224
self.server_state_changed(self.server.GetState())
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
89
# From the Avahi example code:
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
99
# End of Avahi example code
225
100
226
101
227
102
class Client(object):
228
103
"""A representation of a client host served by this server.
229
230
104
Attributes:
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
105
name: string; from the config file, used in log messages
233
106
fingerprint: string (40 or 32 hexadecimal digits); used to
234
107
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
245
checker: subprocess.Popen(); a running checker process used
246
to see if the client lives.
247
'None' if no process is running.
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.
248
119
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
120
stop_initiator_tag: - '' -
250
121
checker_callback_tag: - '' -
251
122
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
123
client lives. %()s expansions are done at
253
124
runtime with vars(self) as dict, so that for
254
125
instance %(name)s can be used in the command.
255
current_checker_command: string; current running checker_command
126
Private attibutes:
127
_timeout: Real variable for 'timeout'
128
_interval: Real variable for 'interval'
129
_timeout_milliseconds: Used by gobject.timeout_add()
130
_interval_milliseconds: - '' -
256
131
"""
257
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
264
265
def timeout_milliseconds(self):
266
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
268
269
def interval_milliseconds(self):
270
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
276
attribute."""
132
def _set_timeout(self, timeout):
133
"Setter function for 'timeout' attribute"
134
self._timeout = timeout
135
self._timeout_milliseconds = ((self.timeout.days
136
* 24 * 60 * 60 * 1000)
137
+ (self.timeout.seconds * 1000)
138
+ (self.timeout.microseconds
139
// 1000))
140
timeout = property(lambda self: self._timeout,
141
_set_timeout)
142
del _set_timeout
143
def _set_interval(self, interval):
144
"Setter function for 'interval' attribute"
145
self._interval = interval
146
self._interval_milliseconds = ((self.interval.days
147
* 24 * 60 * 60 * 1000)
148
+ (self.interval.seconds
149
* 1000)
150
+ (self.interval.microseconds
151
// 1000))
152
interval = property(lambda self: self._interval,
153
_set_interval)
154
del _set_interval
155
def __init__(self, name=None, 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.."""
277
160
self.name = name
278
if config is None:
279
config = {}
280
logger.debug(u"Creating client %r", self.name)
281
# Uppercase and remove spaces from fingerprint for later
282
# comparison purposes with return value from the fingerprint()
283
# function
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
294
else:
295
raise TypeError(u"No secret or secfile for client %s"
296
% self.name)
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
299
self.enabled = False
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
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)
185
self.stop_hook = stop_hook
305
186
self.checker = None
306
187
self.checker_initiator_tag = None
307
self.disable_initiator_tag = None
188
self.stop_initiator_tag = None
308
189
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
310
self.current_checker_command = None
311
self.last_connect = None
312
313
def enable(self):
190
self.check_command = checker
191
def start(self):
314
192
"""Start this client's checker and timeout hooks"""
315
self.last_enabled = datetime.datetime.utcnow()
316
193
# Schedule a new checker to be started an 'interval' from now,
317
194
# and every interval from then on.
318
self.checker_initiator_tag = (gobject.timeout_add
319
(self.interval_milliseconds(),
320
self.start_checker))
195
self.checker_initiator_tag = gobject.timeout_add\
196
(self._interval_milliseconds,
197
self.start_checker)
321
198
# Also start a new checker *right now*.
322
199
self.start_checker()
323
# Schedule a disable() when 'timeout' has passed
324
self.disable_initiator_tag = (gobject.timeout_add
325
(self.timeout_milliseconds(),
326
self.disable))
327
self.enabled = True
328
329
def disable(self):
330
"""Disable this client."""
331
if not getattr(self, "enabled", False):
200
# Schedule a stop() when 'timeout' has passed
201
self.stop_initiator_tag = gobject.timeout_add\
202
(self._timeout_milliseconds,
203
self.stop)
204
def stop(self):
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:
332
213
return False
333
logger.info(u"Disabling client %s", self.name)
334
if getattr(self, u"disable_initiator_tag", False):
335
gobject.source_remove(self.disable_initiator_tag)
336
self.disable_initiator_tag = None
337
if getattr(self, u"checker_initiator_tag", False):
214
if hasattr(self, "stop_initiator_tag") \
215
and self.stop_initiator_tag:
216
gobject.source_remove(self.stop_initiator_tag)
217
self.stop_initiator_tag = None
218
if hasattr(self, "checker_initiator_tag") \
219
and self.checker_initiator_tag:
338
220
gobject.source_remove(self.checker_initiator_tag)
339
221
self.checker_initiator_tag = None
340
222
self.stop_checker()
341
if self.disable_hook:
342
self.disable_hook(self)
343
self.enabled = False
223
if self.stop_hook:
224
self.stop_hook(self)
344
225
# Do not run this again if called by a gobject.timeout_add
345
226
return False
346
347
227
def __del__(self):
348
self.disable_hook = None
349
self.disable()
350
351
def checker_callback(self, pid, condition, command):
228
self.stop_hook = None
229
self.stop()
230
def checker_callback(self, pid, condition):
352
231
"""The checker has completed, so take appropriate actions."""
232
now = datetime.datetime.now()
353
233
self.checker_callback_tag = None
354
234
self.checker = None
355
if os.WIFEXITED(condition):
356
exitstatus = os.WEXITSTATUS(condition)
357
if exitstatus == 0:
358
logger.info(u"Checker for %(name)s succeeded",
359
vars(self))
360
self.checked_ok()
361
else:
362
logger.info(u"Checker for %(name)s failed",
363
vars(self))
364
else:
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)
244
elif not os.WIFEXITED(condition):
365
245
logger.warning(u"Checker for %(name)s crashed?",
366
246
vars(self))
367
368
def checked_ok(self):
369
"""Bump up the timeout for this client.
370
371
This should only be called when the client has been seen,
372
alive and well.
373
"""
374
self.last_checked_ok = datetime.datetime.utcnow()
375
gobject.source_remove(self.disable_initiator_tag)
376
self.disable_initiator_tag = (gobject.timeout_add
377
(self.timeout_milliseconds(),
378
self.disable))
379
247
else:
248
logger.debug(u"Checker for %(name)s failed",
249
vars(self))
380
250
def start_checker(self):
381
251
"""Start a new checker subprocess if one is not running.
382
383
252
If a checker already exists, leave it running and do
384
253
nothing."""
385
254
# The reason for not killing a running checker is that if we
390
259
# checkers alone, the checker would have to take more time
391
260
# than 'timeout' for the client to be declared invalid, which
392
261
# is as it should be.
393
394
# If a checker exists, make sure it is not a zombie
395
if self.checker is not None:
396
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
397
if pid:
398
logger.warning(u"Checker was a zombie")
399
gobject.source_remove(self.checker_callback_tag)
400
self.checker_callback(pid, status,
401
self.current_checker_command)
402
# Start a new checker if needed
403
262
if self.checker is None:
404
263
try:
405
# In case checker_command has exactly one % operator
406
command = self.checker_command % self.host
264
command = self.check_command % self.fqdn
407
265
except TypeError:
408
# Escape attributes for the shell
409
escaped_attrs = dict((key,
410
re.escape(unicode(str(val),
411
errors=
412
u'replace')))
266
escaped_attrs = dict((key, re.escape(str(val)))
413
267
for key, val in
414
268
vars(self).iteritems())
415
269
try:
416
command = self.checker_command % escaped_attrs
270
command = self.check_command % escaped_attrs
417
271
except TypeError, error:
418
logger.error(u'Could not format string "%s":'
419
u' %s', self.checker_command, error)
272
logger.critical(u'Could not format string "%s":'
273
u' %s', self.check_command, error)
420
274
return True # Try again later
421
self.current_checker_command = command
422
275
try:
423
logger.info(u"Starting checker %r for %s",
424
command, self.name)
425
# We don't need to redirect stdout and stderr, since
426
# in normal mode, that is already done by daemon(),
427
# and in debug mode we don't want to. (Stdin is
428
# always replaced by /dev/null.)
429
self.checker = subprocess.Popen(command,
430
close_fds=True,
431
shell=True, cwd=u"/")
432
self.checker_callback_tag = (gobject.child_watch_add
433
(self.checker.pid,
434
self.checker_callback,
435
data=command))
436
# The checker may have completed before the gobject
437
# watch was added. Check for this.
438
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
439
if pid:
440
gobject.source_remove(self.checker_callback_tag)
441
self.checker_callback(pid, status, command)
442
except OSError, error:
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:
443
286
logger.error(u"Failed to start subprocess: %s",
444
287
error)
445
288
# Re-run this periodically if run by gobject.timeout_add
446
289
return True
447
448
290
def stop_checker(self):
449
291
"""Force the checker process, if any, to stop."""
450
292
if self.checker_callback_tag:
451
293
gobject.source_remove(self.checker_callback_tag)
452
294
self.checker_callback_tag = None
453
if getattr(self, u"checker", None) is None:
295
if not hasattr(self, "checker") or self.checker is None:
454
296
return
455
logger.debug(u"Stopping checker for %(name)s", vars(self))
297
logger.debug("Stopping checker for %(name)s", vars(self))
456
298
try:
457
299
os.kill(self.checker.pid, signal.SIGTERM)
458
300
#os.sleep(0.5)
459
301
#if self.checker.poll() is None:
460
302
# os.kill(self.checker.pid, signal.SIGKILL)
461
303
except OSError, error:
462
if error.errno != errno.ESRCH: # No such process
304
if error.errno != errno.ESRCH:
463
305
raise
464
306
self.checker = None
465
466
def still_valid(self):
307
def still_valid(self, now=None):
467
308
"""Has the timeout not yet passed for this client?"""
468
if not getattr(self, u"enabled", False):
469
return False
470
now = datetime.datetime.utcnow()
471
if self.last_checked_ok is None:
309
if now is None:
310
now = datetime.datetime.now()
311
if self.last_seen is None:
472
312
return now < (self.created + self.timeout)
473
313
else:
474
return now < (self.last_checked_ok + self.timeout)
475
476
477
class ClientDBus(Client, dbus.service.Object):
478
"""A Client class using D-Bus
479
480
Attributes:
481
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
482
"""
483
# dbus.service.Object doesn't use super(), so we can't either.
484
485
def __init__(self, bus = None, *args, **kwargs):
486
self.bus = bus
487
Client.__init__(self, *args, **kwargs)
488
# Only now, when this client is initialized, can it show up on
489
# the D-Bus
490
self.dbus_object_path = (dbus.ObjectPath
491
(u"/clients/"
492
+ self.name.replace(u".", u"_")))
493
dbus.service.Object.__init__(self, self.bus,
494
self.dbus_object_path)
495
496
@staticmethod
497
def _datetime_to_dbus(dt, variant_level=0):
498
"""Convert a UTC datetime.datetime() to a D-Bus type."""
499
return dbus.String(dt.isoformat(),
500
variant_level=variant_level)
501
502
def enable(self):
503
oldstate = getattr(self, u"enabled", False)
504
r = Client.enable(self)
505
if oldstate != self.enabled:
506
# Emit D-Bus signals
507
self.PropertyChanged(dbus.String(u"enabled"),
508
dbus.Boolean(True, variant_level=1))
509
self.PropertyChanged(
510
dbus.String(u"last_enabled"),
511
self._datetime_to_dbus(self.last_enabled,
512
variant_level=1))
513
return r
514
515
def disable(self, signal = True):
516
oldstate = getattr(self, u"enabled", False)
517
r = Client.disable(self)
518
if signal and oldstate != self.enabled:
519
# Emit D-Bus signal
520
self.PropertyChanged(dbus.String(u"enabled"),
521
dbus.Boolean(False, variant_level=1))
522
return r
523
524
def __del__(self, *args, **kwargs):
525
try:
526
self.remove_from_connection()
527
except LookupError:
528
pass
529
if hasattr(dbus.service.Object, u"__del__"):
530
dbus.service.Object.__del__(self, *args, **kwargs)
531
Client.__del__(self, *args, **kwargs)
532
533
def checker_callback(self, pid, condition, command,
534
*args, **kwargs):
535
self.checker_callback_tag = None
536
self.checker = None
537
# Emit D-Bus signal
538
self.PropertyChanged(dbus.String(u"checker_running"),
539
dbus.Boolean(False, variant_level=1))
540
if os.WIFEXITED(condition):
541
exitstatus = os.WEXITSTATUS(condition)
542
# Emit D-Bus signal
543
self.CheckerCompleted(dbus.Int16(exitstatus),
544
dbus.Int64(condition),
545
dbus.String(command))
546
else:
547
# Emit D-Bus signal
548
self.CheckerCompleted(dbus.Int16(-1),
549
dbus.Int64(condition),
550
dbus.String(command))
551
552
return Client.checker_callback(self, pid, condition, command,
553
*args, **kwargs)
554
555
def checked_ok(self, *args, **kwargs):
556
r = Client.checked_ok(self, *args, **kwargs)
557
# Emit D-Bus signal
558
self.PropertyChanged(
559
dbus.String(u"last_checked_ok"),
560
(self._datetime_to_dbus(self.last_checked_ok,
561
variant_level=1)))
562
return r
563
564
def start_checker(self, *args, **kwargs):
565
old_checker = self.checker
566
if self.checker is not None:
567
old_checker_pid = self.checker.pid
568
else:
569
old_checker_pid = None
570
r = Client.start_checker(self, *args, **kwargs)
571
# Only if new checker process was started
572
if (self.checker is not None
573
and old_checker_pid != self.checker.pid):
574
# Emit D-Bus signal
575
self.CheckerStarted(self.current_checker_command)
576
self.PropertyChanged(
577
dbus.String(u"checker_running"),
578
dbus.Boolean(True, variant_level=1))
579
return r
580
581
def stop_checker(self, *args, **kwargs):
582
old_checker = getattr(self, u"checker", None)
583
r = Client.stop_checker(self, *args, **kwargs)
584
if (old_checker is not None
585
and getattr(self, u"checker", None) is None):
586
self.PropertyChanged(dbus.String(u"checker_running"),
587
dbus.Boolean(False, variant_level=1))
588
return r
589
590
## D-Bus methods & signals
591
_interface = u"se.bsnet.fukt.Mandos.Client"
592
593
# CheckedOK - method
594
@dbus.service.method(_interface)
595
def CheckedOK(self):
596
return self.checked_ok()
597
598
# CheckerCompleted - signal
599
@dbus.service.signal(_interface, signature=u"nxs")
600
def CheckerCompleted(self, exitcode, waitstatus, command):
601
"D-Bus signal"
602
pass
603
604
# CheckerStarted - signal
605
@dbus.service.signal(_interface, signature=u"s")
606
def CheckerStarted(self, command):
607
"D-Bus signal"
608
pass
609
610
# GetAllProperties - method
611
@dbus.service.method(_interface, out_signature=u"a{sv}")
612
def GetAllProperties(self):
613
"D-Bus method"
614
return dbus.Dictionary({
615
dbus.String(u"name"):
616
dbus.String(self.name, variant_level=1),
617
dbus.String(u"fingerprint"):
618
dbus.String(self.fingerprint, variant_level=1),
619
dbus.String(u"host"):
620
dbus.String(self.host, variant_level=1),
621
dbus.String(u"created"):
622
self._datetime_to_dbus(self.created,
623
variant_level=1),
624
dbus.String(u"last_enabled"):
625
(self._datetime_to_dbus(self.last_enabled,
626
variant_level=1)
627
if self.last_enabled is not None
628
else dbus.Boolean(False, variant_level=1)),
629
dbus.String(u"enabled"):
630
dbus.Boolean(self.enabled, variant_level=1),
631
dbus.String(u"last_checked_ok"):
632
(self._datetime_to_dbus(self.last_checked_ok,
633
variant_level=1)
634
if self.last_checked_ok is not None
635
else dbus.Boolean (False, variant_level=1)),
636
dbus.String(u"timeout"):
637
dbus.UInt64(self.timeout_milliseconds(),
638
variant_level=1),
639
dbus.String(u"interval"):
640
dbus.UInt64(self.interval_milliseconds(),
641
variant_level=1),
642
dbus.String(u"checker"):
643
dbus.String(self.checker_command,
644
variant_level=1),
645
dbus.String(u"checker_running"):
646
dbus.Boolean(self.checker is not None,
647
variant_level=1),
648
dbus.String(u"object_path"):
649
dbus.ObjectPath(self.dbus_object_path,
650
variant_level=1)
651
}, signature=u"sv")
652
653
# IsStillValid - method
654
@dbus.service.method(_interface, out_signature=u"b")
655
def IsStillValid(self):
656
return self.still_valid()
657
658
# PropertyChanged - signal
659
@dbus.service.signal(_interface, signature=u"sv")
660
def PropertyChanged(self, property, value):
661
"D-Bus signal"
662
pass
663
664
# ReceivedSecret - signal
665
@dbus.service.signal(_interface)
666
def ReceivedSecret(self):
667
"D-Bus signal"
668
pass
669
670
# Rejected - signal
671
@dbus.service.signal(_interface)
672
def Rejected(self):
673
"D-Bus signal"
674
pass
675
676
# SetChecker - method
677
@dbus.service.method(_interface, in_signature=u"s")
678
def SetChecker(self, checker):
679
"D-Bus setter method"
680
self.checker_command = checker
681
# Emit D-Bus signal
682
self.PropertyChanged(dbus.String(u"checker"),
683
dbus.String(self.checker_command,
684
variant_level=1))
685
686
# SetHost - method
687
@dbus.service.method(_interface, in_signature=u"s")
688
def SetHost(self, host):
689
"D-Bus setter method"
690
self.host = host
691
# Emit D-Bus signal
692
self.PropertyChanged(dbus.String(u"host"),
693
dbus.String(self.host, variant_level=1))
694
695
# SetInterval - method
696
@dbus.service.method(_interface, in_signature=u"t")
697
def SetInterval(self, milliseconds):
698
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
699
# Emit D-Bus signal
700
self.PropertyChanged(dbus.String(u"interval"),
701
(dbus.UInt64(self.interval_milliseconds(),
702
variant_level=1)))
703
704
# SetSecret - method
705
@dbus.service.method(_interface, in_signature=u"ay",
706
byte_arrays=True)
707
def SetSecret(self, secret):
708
"D-Bus setter method"
709
self.secret = str(secret)
710
711
# SetTimeout - method
712
@dbus.service.method(_interface, in_signature=u"t")
713
def SetTimeout(self, milliseconds):
714
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
715
# Emit D-Bus signal
716
self.PropertyChanged(dbus.String(u"timeout"),
717
(dbus.UInt64(self.timeout_milliseconds(),
718
variant_level=1)))
719
720
# Enable - method
721
@dbus.service.method(_interface)
722
def Enable(self):
723
"D-Bus method"
724
self.enable()
725
726
# StartChecker - method
727
@dbus.service.method(_interface)
728
def StartChecker(self):
729
"D-Bus method"
730
self.start_checker()
731
732
# Disable - method
733
@dbus.service.method(_interface)
734
def Disable(self):
735
"D-Bus method"
736
self.disable()
737
738
# StopChecker - method
739
@dbus.service.method(_interface)
740
def StopChecker(self):
741
self.stop_checker()
742
743
del _interface
744
745
746
class ClientHandler(socketserver.BaseRequestHandler, object):
747
"""A class to handle client connections.
748
749
Instantiated once for each connection to handle it.
314
return now < (self.last_seen + self.timeout)
315
316
317
def peer_certificate(session):
318
"Return the peer's OpenPGP certificate as a bytestring"
319
# If not an OpenPGP certificate...
320
if gnutls.library.functions.gnutls_certificate_type_get\
321
(session._c_object) \
322
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
323
# ...do the normal thing
324
return session.peer_certificate
325
list_size = ctypes.c_uint()
326
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
327
(session._c_object, ctypes.byref(list_size))
328
if list_size.value == 0:
329
return None
330
cert = cert_list[0]
331
return ctypes.string_at(cert.data, cert.size)
332
333
334
def fingerprint(openpgp):
335
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
336
# New empty GnuTLS certificate
337
crt = gnutls.library.types.gnutls_openpgp_crt_t()
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)))
345
# Import the OpenPGP public key into the certificate
346
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
347
(crt,
348
ctypes.byref(datum),
349
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
350
# New buffer for the fingerprint
351
buffer = ctypes.create_string_buffer(20)
352
buffer_length = ctypes.c_size_t()
353
# Get the fingerprint from the certificate into the buffer
354
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
355
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
356
# Deinit the certificate
357
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
358
# Convert the buffer to a Python bytestring
359
fpr = ctypes.string_at(buffer, buffer_length.value)
360
# Convert the bytestring to hexadecimal notation
361
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
362
return hex_fpr
363
364
365
class tcp_handler(SocketServer.BaseRequestHandler, object):
366
"""A TCP request handler class.
367
Instantiated by IPv6_TCPServer for each request to handle it.
750
368
Note: This will run in its own forked process."""
751
369
752
370
def handle(self):
753
logger.info(u"TCP connection from: %s",
754
unicode(self.client_address))
755
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
756
# Open IPC pipe to parent process
757
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
758
session = (gnutls.connection
759
.ClientSession(self.request,
760
gnutls.connection
761
.X509Credentials()))
762
763
line = self.request.makefile().readline()
764
logger.debug(u"Protocol version: %r", line)
765
try:
766
if int(line.strip().split()[0]) > 1:
767
raise RuntimeError
768
except (ValueError, IndexError, RuntimeError), error:
769
logger.error(u"Unknown protocol version: %s", error)
770
return
771
772
# Note: gnutls.connection.X509Credentials is really a
773
# generic GnuTLS certificate credentials object so long as
774
# no X.509 keys are added to it. Therefore, we can use it
775
# here despite using OpenPGP certificates.
776
777
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
778
# u"+AES-256-CBC", u"+SHA1",
779
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
780
# u"+DHE-DSS"))
781
# Use a fallback default, since this MUST be set.
782
priority = self.server.gnutls_priority
783
if priority is None:
784
priority = u"NORMAL"
785
(gnutls.library.functions
786
.gnutls_priority_set_direct(session._c_object,
787
priority, None))
788
789
try:
790
session.handshake()
791
except gnutls.errors.GNUTLSError, error:
792
logger.warning(u"Handshake failed: %s", error)
793
# Do not run session.bye() here: the session is not
794
# established. Just abandon the request.
795
return
796
logger.debug(u"Handshake succeeded")
797
try:
798
fpr = self.fingerprint(self.peer_certificate(session))
799
except (TypeError, gnutls.errors.GNUTLSError), error:
800
logger.warning(u"Bad certificate: %s", error)
801
session.bye()
802
return
803
logger.debug(u"Fingerprint: %s", fpr)
804
805
for c in self.server.clients:
806
if c.fingerprint == fpr:
807
client = c
808
break
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())
376
377
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
378
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
379
# "+DHE-DSS"))
380
priority = "SECURE256"
381
382
gnutls.library.functions.gnutls_priority_set_direct\
383
(session._c_object, priority, None);
384
385
try:
386
session.handshake()
387
except gnutls.errors.GNUTLSError, error:
388
logger.debug(u"Handshake failed: %s", error)
389
# Do not run session.bye() here: the session is not
390
# established. Just abandon the request.
391
return
392
try:
393
fpr = fingerprint(peer_certificate(session))
394
except (TypeError, gnutls.errors.GNUTLSError), error:
395
logger.debug(u"Bad certificate: %s", error)
396
session.bye()
397
return
398
logger.debug(u"Fingerprint: %s", fpr)
399
client = None
400
for c in self.server.clients:
401
if c.fingerprint == fpr:
402
client = c
403
break
404
# Have to check if client.still_valid(), since it is possible
405
# that the client timed out while establishing the GnuTLS
406
# session.
407
if (not client) or (not client.still_valid()):
408
if client:
409
logger.debug(u"Client %(name)s is invalid",
410
vars(client))
809
411
else:
810
ipc.write(u"NOTFOUND %s\n" % fpr)
811
session.bye()
812
return
813
# Have to check if client.still_valid(), since it is
814
# possible that the client timed out while establishing
815
# the GnuTLS session.
816
if not client.still_valid():
817
ipc.write(u"INVALID %s\n" % client.name)
818
session.bye()
819
return
820
ipc.write(u"SENDING %s\n" % client.name)
821
sent_size = 0
822
while sent_size < len(client.secret):
823
sent = session.send(client.secret[sent_size:])
824
logger.debug(u"Sent: %d, remaining: %d",
825
sent, len(client.secret)
826
- (sent_size + sent))
827
sent_size += sent
412
logger.debug(u"Client not found for fingerprint: %s",
413
fpr)
828
414
session.bye()
829
830
@staticmethod
831
def peer_certificate(session):
832
"Return the peer's OpenPGP certificate as a bytestring"
833
# If not an OpenPGP certificate...
834
if (gnutls.library.functions
835
.gnutls_certificate_type_get(session._c_object)
836
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
837
# ...do the normal thing
838
return session.peer_certificate
839
list_size = ctypes.c_uint(1)
840
cert_list = (gnutls.library.functions
841
.gnutls_certificate_get_peers
842
(session._c_object, ctypes.byref(list_size)))
843
if not bool(cert_list) and list_size.value != 0:
844
raise gnutls.errors.GNUTLSError(u"error getting peer"
845
u" certificate")
846
if list_size.value == 0:
847
return None
848
cert = cert_list[0]
849
return ctypes.string_at(cert.data, cert.size)
850
851
@staticmethod
852
def fingerprint(openpgp):
853
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
854
# New GnuTLS "datum" with the OpenPGP public key
855
datum = (gnutls.library.types
856
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
857
ctypes.POINTER
858
(ctypes.c_ubyte)),
859
ctypes.c_uint(len(openpgp))))
860
# New empty GnuTLS certificate
861
crt = gnutls.library.types.gnutls_openpgp_crt_t()
862
(gnutls.library.functions
863
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
864
# Import the OpenPGP public key into the certificate
865
(gnutls.library.functions
866
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
867
gnutls.library.constants
868
.GNUTLS_OPENPGP_FMT_RAW))
869
# Verify the self signature in the key
870
crtverify = ctypes.c_uint()
871
(gnutls.library.functions
872
.gnutls_openpgp_crt_verify_self(crt, 0,
873
ctypes.byref(crtverify)))
874
if crtverify.value != 0:
875
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
876
raise (gnutls.errors.CertificateSecurityError
877
(u"Verify failed"))
878
# New buffer for the fingerprint
879
buf = ctypes.create_string_buffer(20)
880
buf_len = ctypes.c_size_t()
881
# Get the fingerprint from the certificate into the buffer
882
(gnutls.library.functions
883
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
884
ctypes.byref(buf_len)))
885
# Deinit the certificate
886
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
887
# Convert the buffer to a Python bytestring
888
fpr = ctypes.string_at(buf, buf_len.value)
889
# Convert the bytestring to hexadecimal notation
890
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
891
return hex_fpr
892
893
894
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
895
"""Like socketserver.ForkingMixIn, but also pass a pipe.
896
897
Assumes a gobject.MainLoop event loop.
898
"""
899
def process_request(self, request, client_address):
900
"""Overrides and wraps the original process_request().
901
902
This function creates a new pipe in self.pipe
903
"""
904
self.pipe = os.pipe()
905
super(ForkingMixInWithPipe,
906
self).process_request(request, client_address)
907
os.close(self.pipe[1]) # close write end
908
# Call "handle_ipc" for both data and EOF events
909
gobject.io_add_watch(self.pipe[0],
910
gobject.IO_IN | gobject.IO_HUP,
911
self.handle_ipc)
912
def handle_ipc(source, condition):
913
"""Dummy function; override as necessary"""
914
os.close(source)
915
return False
916
917
918
class IPv6_TCPServer(ForkingMixInWithPipe,
919
socketserver.TCPServer, object):
920
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
921
415
return
416
sent_size = 0
417
while sent_size < len(client.secret):
418
sent = session.send(client.secret[sent_size:])
419
logger.debug(u"Sent: %d, remaining: %d",
420
sent, len(client.secret)
421
- (sent_size + sent))
422
sent_size += sent
423
session.bye()
424
425
426
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
427
"""IPv6 TCP server. Accepts 'None' as address and/or port.
922
428
Attributes:
923
enabled: Boolean; whether this server is activated yet
924
interface: None or a network interface name (string)
925
use_ipv6: Boolean; to use IPv6 or not
926
----
927
clients: set of Client objects
928
gnutls_priority GnuTLS priority string
929
use_dbus: Boolean; to emit D-Bus signals or not
429
options: Command line options
430
clients: Set() of Client objects
930
431
"""
931
def __init__(self, server_address, RequestHandlerClass,
932
interface=None, use_ipv6=True, clients=None,
933
gnutls_priority=None, use_dbus=True):
934
self.enabled = False
935
self.interface = interface
936
if use_ipv6:
937
self.address_family = socket.AF_INET6
938
self.clients = clients
939
self.use_dbus = use_dbus
940
self.gnutls_priority = gnutls_priority
941
socketserver.TCPServer.__init__(self, server_address,
942
RequestHandlerClass)
432
address_family = socket.AF_INET6
433
def __init__(self, *args, **kwargs):
434
if "options" in kwargs:
435
self.options = kwargs["options"]
436
del kwargs["options"]
437
if "clients" in kwargs:
438
self.clients = kwargs["clients"]
439
del kwargs["clients"]
440
return super(type(self), self).__init__(*args, **kwargs)
943
441
def server_bind(self):
944
442
"""This overrides the normal server_bind() function
945
443
to bind to an interface if one was specified, and also NOT to
946
444
bind to an address or port if they were not specified."""
947
if self.interface is not None:
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
948
449
try:
949
450
self.socket.setsockopt(socket.SOL_SOCKET,
950
SO_BINDTODEVICE,
951
str(self.interface + u'\0'))
451
socket.SO_BINDTODEVICE,
452
self.options.interface)
952
453
except socket.error, error:
953
454
if error[0] == errno.EPERM:
954
logger.error(u"No permission to"
955
u" bind to interface %s",
956
self.interface)
455
logger.warning(u"No permission to"
456
u" bind to interface %s",
457
self.options.interface)
957
458
else:
958
raise
459
raise error
959
460
# Only bind(2) the socket if we really need to.
960
461
if self.server_address[0] or self.server_address[1]:
961
462
if not self.server_address[0]:
962
if self.address_family == socket.AF_INET6:
963
any_address = u"::" # in6addr_any
964
else:
965
any_address = socket.INADDR_ANY
966
self.server_address = (any_address,
463
in6addr_any = "::"
464
self.server_address = (in6addr_any,
967
465
self.server_address[1])
968
elif not self.server_address[1]:
466
elif self.server_address[1] is None:
969
467
self.server_address = (self.server_address[0],
970
468
0)
971
# if self.interface:
972
# self.server_address = (self.server_address[0],
973
# 0, # port
974
# 0, # flowinfo
975
# if_nametoindex
976
# (self.interface))
977
return socketserver.TCPServer.server_bind(self)
978
def server_activate(self):
979
if self.enabled:
980
return socketserver.TCPServer.server_activate(self)
981
def enable(self):
982
self.enabled = True
983
def handle_ipc(self, source, condition, file_objects={}):
984
condition_names = {
985
gobject.IO_IN: u"IN", # There is data to read.
986
gobject.IO_OUT: u"OUT", # Data can be written (without
987
# blocking).
988
gobject.IO_PRI: u"PRI", # There is urgent data to read.
989
gobject.IO_ERR: u"ERR", # Error condition.
990
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
991
# broken, usually for pipes and
992
# sockets).
993
}
994
conditions_string = ' | '.join(name
995
for cond, name in
996
condition_names.iteritems()
997
if cond & condition)
998
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
999
conditions_string)
1000
1001
# Turn the pipe file descriptor into a Python file object
1002
if source not in file_objects:
1003
file_objects[source] = os.fdopen(source, u"r", 1)
1004
1005
# Read a line from the file object
1006
cmdline = file_objects[source].readline()
1007
if not cmdline: # Empty line means end of file
1008
# close the IPC pipe
1009
file_objects[source].close()
1010
del file_objects[source]
1011
1012
# Stop calling this function
1013
return False
1014
1015
logger.debug(u"IPC command: %r", cmdline)
1016
1017
# Parse and act on command
1018
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1019
1020
if cmd == u"NOTFOUND":
1021
logger.warning(u"Client not found for fingerprint: %s",
1022
args)
1023
if self.use_dbus:
1024
# Emit D-Bus signal
1025
mandos_dbus_service.ClientNotFound(args)
1026
elif cmd == u"INVALID":
1027
for client in self.clients:
1028
if client.name == args:
1029
logger.warning(u"Client %s is invalid", args)
1030
if self.use_dbus:
1031
# Emit D-Bus signal
1032
client.Rejected()
1033
break
1034
else:
1035
logger.error(u"Unknown client %s is invalid", args)
1036
elif cmd == u"SENDING":
1037
for client in self.clients:
1038
if client.name == args:
1039
logger.info(u"Sending secret to %s", client.name)
1040
client.checked_ok()
1041
if self.use_dbus:
1042
# Emit D-Bus signal
1043
client.ReceivedSecret()
1044
break
1045
else:
1046
logger.error(u"Sending secret to unknown client %s",
1047
args)
1048
else:
1049
logger.error(u"Unknown IPC command: %r", cmdline)
1050
1051
# Keep calling this function
1052
return True
469
return super(type(self), self).server_bind()
1053
470
1054
471
1055
472
def string_to_delta(interval):
1056
473
"""Parse a string and return a datetime.timedelta
1057
1058
>>> string_to_delta(u'7d')
474
475
>>> string_to_delta('7d')
1059
476
datetime.timedelta(7)
1060
>>> string_to_delta(u'60s')
477
>>> string_to_delta('60s')
1061
478
datetime.timedelta(0, 60)
1062
>>> string_to_delta(u'60m')
479
>>> string_to_delta('60m')
1063
480
datetime.timedelta(0, 3600)
1064
>>> string_to_delta(u'24h')
481
>>> string_to_delta('24h')
1065
482
datetime.timedelta(1)
1066
483
>>> string_to_delta(u'1w')
1067
484
datetime.timedelta(7)
1068
>>> string_to_delta(u'5m 30s')
1069
datetime.timedelta(0, 330)
1070
485
"""
1071
timevalue = datetime.timedelta(0)
1072
for s in interval.split():
1073
try:
1074
suffix = unicode(s[-1])
1075
value = int(s[:-1])
1076
if suffix == u"d":
1077
delta = datetime.timedelta(value)
1078
elif suffix == u"s":
1079
delta = datetime.timedelta(0, value)
1080
elif suffix == u"m":
1081
delta = datetime.timedelta(0, 0, 0, 0, value)
1082
elif suffix == u"h":
1083
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1084
elif suffix == u"w":
1085
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1086
else:
1087
raise ValueError
1088
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:
1089
500
raise ValueError
1090
timevalue += delta
1091
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()
537
538
539
def server_state_changed(state):
540
"""Derived from the Avahi example code"""
541
if state == avahi.SERVER_COLLISION:
542
logger.warning(u"Server name collision")
543
remove_service()
544
elif state == avahi.SERVER_RUNNING:
545
add_service()
546
547
548
def entry_group_state_changed(state, error):
549
"""Derived from the Avahi example code"""
550
global serviceName, server, rename_count
551
552
logger.debug(u"state change: %i", state)
553
554
if state == avahi.ENTRY_GROUP_ESTABLISHED:
555
logger.debug(u"Service established.")
556
elif state == avahi.ENTRY_GROUP_COLLISION:
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)
570
elif state == avahi.ENTRY_GROUP_FAILURE:
571
logger.error(u"Error in group state changed %s",
572
unicode(error))
573
killme(1)
1092
574
1093
575
1094
576
def if_nametoindex(interface):
1095
"""Call the C function if_nametoindex(), or equivalent
1096
1097
Note: This function cannot accept a unicode string."""
1098
global if_nametoindex
577
"""Call the C function if_nametoindex()"""
1099
578
try:
1100
if_nametoindex = (ctypes.cdll.LoadLibrary
1101
(ctypes.util.find_library(u"c"))
1102
.if_nametoindex)
579
libc = ctypes.cdll.LoadLibrary("libc.so.6")
580
return libc.if_nametoindex(interface)
1103
581
except (OSError, AttributeError):
1104
logger.warning(u"Doing if_nametoindex the hard way")
1105
def if_nametoindex(interface):
1106
"Get an interface index the hard way, i.e. using fcntl()"
1107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1108
with closing(socket.socket()) as s:
1109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1110
struct.pack(str(u"16s16x"),
1111
interface))
1112
interface_index = struct.unpack(str(u"I"),
1113
ifreq[16:20])[0]
1114
return interface_index
1115
return if_nametoindex(interface)
1116
1117
1118
def daemon(nochdir = False, noclose = False):
582
if "struct" not in sys.modules:
583
import struct
584
if "fcntl" not in sys.modules:
585
import fcntl
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):
1119
596
"""See daemon(3). Standard BSD Unix function.
1120
1121
597
This should really exist as os.daemon, but it doesn't (yet)."""
1122
598
if os.fork():
1123
599
sys.exit()
1124
600
os.setsid()
1125
601
if not nochdir:
1126
os.chdir(u"/")
1127
if os.fork():
1128
sys.exit()
602
os.chdir("/")
1129
603
if not noclose:
1130
604
# Close all standard open file descriptors
1131
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
605
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
1132
606
if not stat.S_ISCHR(os.fstat(null).st_mode):
1133
607
raise OSError(errno.ENODEV,
1134
u"/dev/null not a character device")
608
"/dev/null not a character device")
1135
609
os.dup2(null, sys.stdin.fileno())
1136
610
os.dup2(null, sys.stdout.fileno())
1137
611
os.dup2(null, sys.stderr.fileno())
1139
613
os.close(null)
1140
614
1141
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
1142
625
def main():
1143
1144
######################################################################
1145
# Parsing of options, both command line and config file
1146
1147
parser = optparse.OptionParser(version = "%%prog %s" % version)
1148
parser.add_option("-i", u"--interface", type=u"string",
1149
metavar="IF", help=u"Bind to interface IF")
1150
parser.add_option("-a", u"--address", type=u"string",
1151
help=u"Address to listen for requests on")
1152
parser.add_option("-p", u"--port", type=u"int",
1153
help=u"Port number to receive requests on")
1154
parser.add_option("--check", action=u"store_true",
1155
help=u"Run self-test")
1156
parser.add_option("--debug", action=u"store_true",
1157
help=u"Debug mode; run in foreground and log to"
1158
u" terminal")
1159
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1160
u" priority string (see GnuTLS documentation)")
1161
parser.add_option("--servicename", type=u"string",
1162
metavar=u"NAME", help=u"Zeroconf service name")
1163
parser.add_option("--configdir", type=u"string",
1164
default=u"/etc/mandos", metavar=u"DIR",
1165
help=u"Directory to search for configuration"
1166
u" files")
1167
parser.add_option("--no-dbus", action=u"store_false",
1168
dest=u"use_dbus", help=u"Do not provide D-Bus"
1169
u" system bus interface")
1170
parser.add_option("--no-ipv6", action=u"store_false",
1171
dest=u"use_ipv6", help=u"Do not use IPv6")
1172
options = parser.parse_args()[0]
626
global exitstatus
627
exitstatus = 0
628
global main_loop_started
629
main_loop_started = False
630
631
parser = OptionParser()
632
parser.add_option("-i", "--interface", type="string",
633
default=None, metavar="IF",
634
help="Bind to interface IF")
635
parser.add_option("-a", "--address", type="string", default=None,
636
help="Address to listen for requests on")
637
parser.add_option("-p", "--port", type="int", default=None,
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")
645
parser.add_option("--check", action="store_true", default=False,
646
help="Run self-test")
647
parser.add_option("--debug", action="store_true", default=False,
648
help="Debug mode")
649
(options, args) = parser.parse_args()
1173
650
1174
651
if options.check:
1175
652
import doctest
1176
653
doctest.testmod()
1177
654
sys.exit()
1178
655
1179
# Default values for config file for server-global settings
1180
server_defaults = { u"interface": u"",
1181
u"address": u"",
1182
u"port": u"",
1183
u"debug": u"False",
1184
u"priority":
1185
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1186
u"servicename": u"Mandos",
1187
u"use_dbus": u"True",
1188
u"use_ipv6": u"True",
1189
}
1190
1191
# Parse config file for server-global settings
1192
server_config = configparser.SafeConfigParser(server_defaults)
1193
del server_defaults
1194
server_config.read(os.path.join(options.configdir,
1195
u"mandos.conf"))
1196
# Convert the SafeConfigParser object to a dict
1197
server_settings = server_config.defaults()
1198
# Use the appropriate methods on the non-string config options
1199
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1200
server_settings[option] = server_config.getboolean(u"DEFAULT",
1201
option)
1202
if server_settings["port"]:
1203
server_settings["port"] = server_config.getint(u"DEFAULT",
1204
u"port")
1205
del server_config
1206
1207
# Override the settings from the config file with command line
1208
# options, if set.
1209
for option in (u"interface", u"address", u"port", u"debug",
1210
u"priority", u"servicename", u"configdir",
1211
u"use_dbus", u"use_ipv6"):
1212
value = getattr(options, option)
1213
if value is not None:
1214
server_settings[option] = value
1215
del options
1216
# Force all strings to be unicode
1217
for option in server_settings.keys():
1218
if type(server_settings[option]) is str:
1219
server_settings[option] = unicode(server_settings[option])
1220
# Now we have our good server settings in "server_settings"
1221
1222
##################################################################
1223
1224
# For convenience
1225
debug = server_settings[u"debug"]
1226
use_dbus = server_settings[u"use_dbus"]
1227
use_ipv6 = server_settings[u"use_ipv6"]
1228
1229
if not debug:
1230
syslogger.setLevel(logging.WARNING)
1231
console.setLevel(logging.WARNING)
1232
1233
if server_settings[u"servicename"] != u"Mandos":
1234
syslogger.setFormatter(logging.Formatter
1235
(u'Mandos (%s) [%%(process)d]:'
1236
u' %%(levelname)s: %%(message)s'
1237
% server_settings[u"servicename"]))
1238
1239
# Parse config file with clients
1240
client_defaults = { u"timeout": u"1h",
1241
u"interval": u"5m",
1242
u"checker": u"fping -q -- %%(host)s",
1243
u"host": u"",
1244
}
1245
client_config = configparser.SafeConfigParser(client_defaults)
1246
client_config.read(os.path.join(server_settings[u"configdir"],
1247
u"clients.conf"))
1248
1249
global mandos_dbus_service
1250
mandos_dbus_service = None
1251
1252
clients = set()
1253
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1254
server_settings[u"port"]),
1255
ClientHandler,
1256
interface=
1257
server_settings[u"interface"],
1258
use_ipv6=use_ipv6,
1259
clients=clients,
1260
gnutls_priority=
1261
server_settings[u"priority"],
1262
use_dbus=use_dbus)
1263
pidfilename = u"/var/run/mandos.pid"
1264
try:
1265
pidfile = open(pidfilename, u"w")
1266
except IOError:
1267
logger.error(u"Could not open file %r", pidfilename)
1268
1269
try:
1270
uid = pwd.getpwnam(u"_mandos").pw_uid
1271
gid = pwd.getpwnam(u"_mandos").pw_gid
1272
except KeyError:
1273
try:
1274
uid = pwd.getpwnam(u"mandos").pw_uid
1275
gid = pwd.getpwnam(u"mandos").pw_gid
1276
except KeyError:
1277
try:
1278
uid = pwd.getpwnam(u"nobody").pw_uid
1279
gid = pwd.getpwnam(u"nobody").pw_gid
1280
except KeyError:
1281
uid = 65534
1282
gid = 65534
1283
try:
1284
os.setgid(gid)
1285
os.setuid(uid)
1286
except OSError, error:
1287
if error[0] != errno.EPERM:
1288
raise error
1289
1290
# Enable all possible GnuTLS debugging
1291
if debug:
1292
# "Use a log level over 10 to enable all debugging options."
1293
# - GnuTLS manual
1294
gnutls.library.functions.gnutls_global_set_log_level(11)
1295
1296
@gnutls.library.types.gnutls_log_func
1297
def debug_gnutls(level, string):
1298
logger.debug(u"GnuTLS: %s", string[:-1])
1299
1300
(gnutls.library.functions
1301
.gnutls_global_set_log_function(debug_gnutls))
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")
1302
671
1303
672
global main_loop
673
global bus
674
global server
1304
675
# From the Avahi example code
1305
676
DBusGMainLoop(set_as_default=True )
1306
677
main_loop = gobject.MainLoop()
1307
678
bus = dbus.SystemBus()
679
server = dbus.Interface(
680
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
681
avahi.DBUS_INTERFACE_SERVER )
1308
682
# End of Avahi example code
1309
if use_dbus:
1310
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1311
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1312
service = AvahiService(name = server_settings[u"servicename"],
1313
servicetype = u"_mandos._tcp",
1314
protocol = protocol, bus = bus)
1315
if server_settings["interface"]:
1316
service.interface = (if_nametoindex
1317
(str(server_settings[u"interface"])))
1318
683
1319
client_class = Client
1320
if use_dbus:
1321
client_class = functools.partial(ClientDBus, bus = bus)
1322
clients.update(set(
1323
client_class(name = section,
1324
config= dict(client_config.items(section)))
1325
for section in client_config.sections()))
1326
if not clients:
1327
logger.warning(u"No clients defined")
684
debug = options.debug
1328
685
1329
686
if debug:
1330
# Redirect stdin so all checkers get /dev/null
1331
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1332
os.dup2(null, sys.stdin.fileno())
1333
if null > 2:
1334
os.close(null)
1335
else:
1336
# No console logging
1337
logger.removeHandler(console)
1338
# Close all input and output, do double fork, etc.
1339
daemon()
1340
1341
try:
1342
with closing(pidfile):
1343
pid = os.getpid()
1344
pidfile.write(str(pid) + "\n")
1345
del pidfile
1346
except IOError:
1347
logger.error(u"Could not write to file %r with PID %d",
1348
pidfilename, pid)
1349
except NameError:
1350
# "pidfile" was never created
1351
pass
1352
del pidfilename
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))))
705
for section in client_config.sections()))
706
707
if not debug:
708
daemon(False, False)
1353
709
1354
710
def cleanup():
1355
711
"Cleanup function; run on exit"
1356
service.cleanup()
712
global group
713
# From the Avahi example code
714
if not group is None:
715
group.Free()
716
group = None
717
# End of Avahi example code
1357
718
1358
719
while clients:
1359
720
client = clients.pop()
1360
client.disable_hook = None
1361
client.disable()
721
client.stop_hook = None
722
client.stop()
1362
723
1363
724
atexit.register(cleanup)
1364
725
1365
726
if not debug:
1366
727
signal.signal(signal.SIGINT, signal.SIG_IGN)
1367
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1368
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1369
1370
if use_dbus:
1371
class MandosDBusService(dbus.service.Object):
1372
"""A D-Bus proxy object"""
1373
def __init__(self):
1374
dbus.service.Object.__init__(self, bus, u"/")
1375
_interface = u"se.bsnet.fukt.Mandos"
1376
1377
@dbus.service.signal(_interface, signature=u"oa{sv}")
1378
def ClientAdded(self, objpath, properties):
1379
"D-Bus signal"
1380
pass
1381
1382
@dbus.service.signal(_interface, signature=u"s")
1383
def ClientNotFound(self, fingerprint):
1384
"D-Bus signal"
1385
pass
1386
1387
@dbus.service.signal(_interface, signature=u"os")
1388
def ClientRemoved(self, objpath, name):
1389
"D-Bus signal"
1390
pass
1391
1392
@dbus.service.method(_interface, out_signature=u"ao")
1393
def GetAllClients(self):
1394
"D-Bus method"
1395
return dbus.Array(c.dbus_object_path for c in clients)
1396
1397
@dbus.service.method(_interface,
1398
out_signature=u"a{oa{sv}}")
1399
def GetAllClientsWithProperties(self):
1400
"D-Bus method"
1401
return dbus.Dictionary(
1402
((c.dbus_object_path, c.GetAllProperties())
1403
for c in clients),
1404
signature=u"oa{sv}")
1405
1406
@dbus.service.method(_interface, in_signature=u"o")
1407
def RemoveClient(self, object_path):
1408
"D-Bus method"
1409
for c in clients:
1410
if c.dbus_object_path == object_path:
1411
clients.remove(c)
1412
c.remove_from_connection()
1413
# Don't signal anything except ClientRemoved
1414
c.disable(signal=False)
1415
# Emit D-Bus signal
1416
self.ClientRemoved(object_path, c.name)
1417
return
1418
raise KeyError
1419
1420
del _interface
1421
1422
mandos_dbus_service = MandosDBusService()
728
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
729
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1423
730
1424
731
for client in clients:
1425
if use_dbus:
1426
# Emit D-Bus signal
1427
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1428
client.GetAllProperties())
1429
client.enable()
1430
1431
tcp_server.enable()
1432
tcp_server.server_activate()
1433
1434
# Find out what port we got
1435
service.port = tcp_server.socket.getsockname()[1]
1436
if use_ipv6:
1437
logger.info(u"Now listening on address %r, port %d,"
1438
" flowinfo %d, scope_id %d"
1439
% tcp_server.socket.getsockname())
1440
else: # IPv4
1441
logger.info(u"Now listening on address %r, port %d"
1442
% tcp_server.socket.getsockname())
1443
1444
#service.interface = tcp_server.socket.getsockname()[3]
1445
1446
try:
1447
# From the Avahi example code
1448
try:
1449
service.activate()
1450
except dbus.exceptions.DBusException, error:
1451
logger.critical(u"DBusException: %s", error)
1452
sys.exit(1)
1453
# End of Avahi example code
1454
1455
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1456
lambda *args, **kwargs:
1457
(tcp_server.handle_request
1458
(*args[2:], **kwargs) or True))
1459
1460
logger.debug(u"Starting main loop")
732
client.start()
733
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
1461
763
main_loop.run()
1462
except AvahiError, error:
1463
logger.critical(u"AvahiError: %s", error)
1464
sys.exit(1)
1465
764
except KeyboardInterrupt:
1466
765
if debug:
1467
print >> sys.stderr
1468
logger.debug(u"Server received KeyboardInterrupt")
1469
logger.debug(u"Server exiting")
766
print
767
768
sys.exit(exitstatus)
1470
769
1471
770
if __name__ == '__main__':
1472
771
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0