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- Committer: Teddy Hogeborn
- Date: 2008-07-21 15:34:44 UTC
- Revision ID: teddy@fukt.bsnet.se-20080721153444-lugbjkj1oq65ugq3
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
$(LANGUAGE).
(WARN, DEBUG, COVERAGE, LANGUAGE): New.
(LDFLAGS): New; use $(COVERAGE)
* plugbasedclient.c: Added copyright header.
(process.buffer_size, process.buffer_length): Changed to "size_t".
(main): Cast arguments to malloc and realloc. Detect read errors
from processes.
* mandosclient.c: Added copyright header.
(interface): Moved to inside "main".
(gpg_packet_decrypt): Renamed to "pgp_packet_decrypt"; all callers
changed. Changed "new_packet_capacity" and
"new_packet_length" to be ssize_t. Cast
arguments to realloc.
(debuggnutls): Attribute "level" argument as unused.
(empty_log): Attribute "level" and "txt" arguments as unused.
(start_mandos_communication): New argument "if_index". Bug fix:
check ret, no tcp_sd, for errors from
setsockopt. Use "if_index" directly
instead of looking up the index. Loop
around fwrite until all data is written.
(resolve_callback): Attribute "txt", and "flags" as usused. Added
default case to switch. Also show server host
name. Call start_mandos_communication with
"interface".
(browse_callback): Added default case to switch.
(main): Variable "interface" moved here. Cast "srand" argument.
Bug fix: Call avahi_s_service_browser_new with index of
"interface", not "eth0".
* passprompt.c: Added copyright header.
(termination_handler): Attribute "signum" argument as unused.
$(LANGUAGE).
(WARN, DEBUG, COVERAGE, LANGUAGE): New.
(LDFLAGS): New; use $(COVERAGE)
* plugbasedclient.c: Added copyright header.
(process.buffer_size, process.buffer_length): Changed to "size_t".
(main): Cast arguments to malloc and realloc. Detect read errors
from processes.
* mandosclient.c: Added copyright header.
(interface): Moved to inside "main".
(gpg_packet_decrypt): Renamed to "pgp_packet_decrypt"; all callers
changed. Changed "new_packet_capacity" and
"new_packet_length" to be ssize_t. Cast
arguments to realloc.
(debuggnutls): Attribute "level" argument as unused.
(empty_log): Attribute "level" and "txt" arguments as unused.
(start_mandos_communication): New argument "if_index". Bug fix:
check ret, no tcp_sd, for errors from
setsockopt. Use "if_index" directly
instead of looking up the index. Loop
around fwrite until all data is written.
(resolve_callback): Attribute "txt", and "flags" as usused. Added
default case to switch. Also show server host
name. Call start_mandos_communication with
"interface".
(browse_callback): Added default case to switch.
(main): Variable "interface" moved here. Cast "srand" argument.
Bug fix: Call avahi_s_service_browser_new with index of
"interface", not "eth0".
* passprompt.c: Added copyright header.
(termination_handler): Attribute "signum" argument as unused.
- 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".
12
12
#
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
13
# Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
14
# Påhlsson.
16
15
#
17
16
# 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
39
import datetime
40
40
import errno
41
41
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
53
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
SO_BINDTODEVICE = None
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'))
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'))
89
82
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
group: D-Bus Entry Group
128
server: D-Bus Server
129
bus: dbus.SystemBus()
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
482
bus: dbus.SystemBus()
483
"""
484
# dbus.service.Object doesn't use super(), so we can't either.
485
486
def __init__(self, bus = None, *args, **kwargs):
487
self.bus = bus
488
Client.__init__(self, *args, **kwargs)
489
# Only now, when this client is initialized, can it show up on
490
# the D-Bus
491
self.dbus_object_path = (dbus.ObjectPath
492
(u"/clients/"
493
+ self.name.replace(u".", u"_")))
494
dbus.service.Object.__init__(self, self.bus,
495
self.dbus_object_path)
496
497
@staticmethod
498
def _datetime_to_dbus(dt, variant_level=0):
499
"""Convert a UTC datetime.datetime() to a D-Bus type."""
500
return dbus.String(dt.isoformat(),
501
variant_level=variant_level)
502
503
def enable(self):
504
oldstate = getattr(self, u"enabled", False)
505
r = Client.enable(self)
506
if oldstate != self.enabled:
507
# Emit D-Bus signals
508
self.PropertyChanged(dbus.String(u"enabled"),
509
dbus.Boolean(True, variant_level=1))
510
self.PropertyChanged(
511
dbus.String(u"last_enabled"),
512
self._datetime_to_dbus(self.last_enabled,
513
variant_level=1))
514
return r
515
516
def disable(self, signal = True):
517
oldstate = getattr(self, u"enabled", False)
518
r = Client.disable(self)
519
if signal and oldstate != self.enabled:
520
# Emit D-Bus signal
521
self.PropertyChanged(dbus.String(u"enabled"),
522
dbus.Boolean(False, variant_level=1))
523
return r
524
525
def __del__(self, *args, **kwargs):
526
try:
527
self.remove_from_connection()
528
except LookupError:
529
pass
530
if hasattr(dbus.service.Object, u"__del__"):
531
dbus.service.Object.__del__(self, *args, **kwargs)
532
Client.__del__(self, *args, **kwargs)
533
534
def checker_callback(self, pid, condition, command,
535
*args, **kwargs):
536
self.checker_callback_tag = None
537
self.checker = None
538
# Emit D-Bus signal
539
self.PropertyChanged(dbus.String(u"checker_running"),
540
dbus.Boolean(False, variant_level=1))
541
if os.WIFEXITED(condition):
542
exitstatus = os.WEXITSTATUS(condition)
543
# Emit D-Bus signal
544
self.CheckerCompleted(dbus.Int16(exitstatus),
545
dbus.Int64(condition),
546
dbus.String(command))
547
else:
548
# Emit D-Bus signal
549
self.CheckerCompleted(dbus.Int16(-1),
550
dbus.Int64(condition),
551
dbus.String(command))
552
553
return Client.checker_callback(self, pid, condition, command,
554
*args, **kwargs)
555
556
def checked_ok(self, *args, **kwargs):
557
r = Client.checked_ok(self, *args, **kwargs)
558
# Emit D-Bus signal
559
self.PropertyChanged(
560
dbus.String(u"last_checked_ok"),
561
(self._datetime_to_dbus(self.last_checked_ok,
562
variant_level=1)))
563
return r
564
565
def start_checker(self, *args, **kwargs):
566
old_checker = self.checker
567
if self.checker is not None:
568
old_checker_pid = self.checker.pid
569
else:
570
old_checker_pid = None
571
r = Client.start_checker(self, *args, **kwargs)
572
# Only if new checker process was started
573
if (self.checker is not None
574
and old_checker_pid != self.checker.pid):
575
# Emit D-Bus signal
576
self.CheckerStarted(self.current_checker_command)
577
self.PropertyChanged(
578
dbus.String(u"checker_running"),
579
dbus.Boolean(True, variant_level=1))
580
return r
581
582
def stop_checker(self, *args, **kwargs):
583
old_checker = getattr(self, u"checker", None)
584
r = Client.stop_checker(self, *args, **kwargs)
585
if (old_checker is not None
586
and getattr(self, u"checker", None) is None):
587
self.PropertyChanged(dbus.String(u"checker_running"),
588
dbus.Boolean(False, variant_level=1))
589
return r
590
591
## D-Bus methods & signals
592
_interface = u"se.bsnet.fukt.Mandos.Client"
593
594
# CheckedOK - method
595
@dbus.service.method(_interface)
596
def CheckedOK(self):
597
return self.checked_ok()
598
599
# CheckerCompleted - signal
600
@dbus.service.signal(_interface, signature=u"nxs")
601
def CheckerCompleted(self, exitcode, waitstatus, command):
602
"D-Bus signal"
603
pass
604
605
# CheckerStarted - signal
606
@dbus.service.signal(_interface, signature=u"s")
607
def CheckerStarted(self, command):
608
"D-Bus signal"
609
pass
610
611
# GetAllProperties - method
612
@dbus.service.method(_interface, out_signature=u"a{sv}")
613
def GetAllProperties(self):
614
"D-Bus method"
615
return dbus.Dictionary({
616
dbus.String(u"name"):
617
dbus.String(self.name, variant_level=1),
618
dbus.String(u"fingerprint"):
619
dbus.String(self.fingerprint, variant_level=1),
620
dbus.String(u"host"):
621
dbus.String(self.host, variant_level=1),
622
dbus.String(u"created"):
623
self._datetime_to_dbus(self.created,
624
variant_level=1),
625
dbus.String(u"last_enabled"):
626
(self._datetime_to_dbus(self.last_enabled,
627
variant_level=1)
628
if self.last_enabled is not None
629
else dbus.Boolean(False, variant_level=1)),
630
dbus.String(u"enabled"):
631
dbus.Boolean(self.enabled, variant_level=1),
632
dbus.String(u"last_checked_ok"):
633
(self._datetime_to_dbus(self.last_checked_ok,
634
variant_level=1)
635
if self.last_checked_ok is not None
636
else dbus.Boolean (False, variant_level=1)),
637
dbus.String(u"timeout"):
638
dbus.UInt64(self.timeout_milliseconds(),
639
variant_level=1),
640
dbus.String(u"interval"):
641
dbus.UInt64(self.interval_milliseconds(),
642
variant_level=1),
643
dbus.String(u"checker"):
644
dbus.String(self.checker_command,
645
variant_level=1),
646
dbus.String(u"checker_running"):
647
dbus.Boolean(self.checker is not None,
648
variant_level=1),
649
dbus.String(u"object_path"):
650
dbus.ObjectPath(self.dbus_object_path,
651
variant_level=1)
652
}, signature=u"sv")
653
654
# IsStillValid - method
655
@dbus.service.method(_interface, out_signature=u"b")
656
def IsStillValid(self):
657
return self.still_valid()
658
659
# PropertyChanged - signal
660
@dbus.service.signal(_interface, signature=u"sv")
661
def PropertyChanged(self, property, value):
662
"D-Bus signal"
663
pass
664
665
# ReceivedSecret - signal
666
@dbus.service.signal(_interface)
667
def ReceivedSecret(self):
668
"D-Bus signal"
669
pass
670
671
# Rejected - signal
672
@dbus.service.signal(_interface)
673
def Rejected(self):
674
"D-Bus signal"
675
pass
676
677
# SetChecker - method
678
@dbus.service.method(_interface, in_signature=u"s")
679
def SetChecker(self, checker):
680
"D-Bus setter method"
681
self.checker_command = checker
682
# Emit D-Bus signal
683
self.PropertyChanged(dbus.String(u"checker"),
684
dbus.String(self.checker_command,
685
variant_level=1))
686
687
# SetHost - method
688
@dbus.service.method(_interface, in_signature=u"s")
689
def SetHost(self, host):
690
"D-Bus setter method"
691
self.host = host
692
# Emit D-Bus signal
693
self.PropertyChanged(dbus.String(u"host"),
694
dbus.String(self.host, variant_level=1))
695
696
# SetInterval - method
697
@dbus.service.method(_interface, in_signature=u"t")
698
def SetInterval(self, milliseconds):
699
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
700
# Emit D-Bus signal
701
self.PropertyChanged(dbus.String(u"interval"),
702
(dbus.UInt64(self.interval_milliseconds(),
703
variant_level=1)))
704
705
# SetSecret - method
706
@dbus.service.method(_interface, in_signature=u"ay",
707
byte_arrays=True)
708
def SetSecret(self, secret):
709
"D-Bus setter method"
710
self.secret = str(secret)
711
712
# SetTimeout - method
713
@dbus.service.method(_interface, in_signature=u"t")
714
def SetTimeout(self, milliseconds):
715
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
716
# Emit D-Bus signal
717
self.PropertyChanged(dbus.String(u"timeout"),
718
(dbus.UInt64(self.timeout_milliseconds(),
719
variant_level=1)))
720
721
# Enable - method
722
@dbus.service.method(_interface)
723
def Enable(self):
724
"D-Bus method"
725
self.enable()
726
727
# StartChecker - method
728
@dbus.service.method(_interface)
729
def StartChecker(self):
730
"D-Bus method"
731
self.start_checker()
732
733
# Disable - method
734
@dbus.service.method(_interface)
735
def Disable(self):
736
"D-Bus method"
737
self.disable()
738
739
# StopChecker - method
740
@dbus.service.method(_interface)
741
def StopChecker(self):
742
self.stop_checker()
743
744
del _interface
745
746
747
class ClientHandler(socketserver.BaseRequestHandler, object):
748
"""A class to handle client connections.
749
750
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.
751
368
Note: This will run in its own forked process."""
752
369
753
370
def handle(self):
754
logger.info(u"TCP connection from: %s",
755
unicode(self.client_address))
756
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
757
# Open IPC pipe to parent process
758
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
759
session = (gnutls.connection
760
.ClientSession(self.request,
761
gnutls.connection
762
.X509Credentials()))
763
764
line = self.request.makefile().readline()
765
logger.debug(u"Protocol version: %r", line)
766
try:
767
if int(line.strip().split()[0]) > 1:
768
raise RuntimeError
769
except (ValueError, IndexError, RuntimeError), error:
770
logger.error(u"Unknown protocol version: %s", error)
771
return
772
773
# Note: gnutls.connection.X509Credentials is really a
774
# generic GnuTLS certificate credentials object so long as
775
# no X.509 keys are added to it. Therefore, we can use it
776
# here despite using OpenPGP certificates.
777
778
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
779
# u"+AES-256-CBC", u"+SHA1",
780
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
781
# u"+DHE-DSS"))
782
# Use a fallback default, since this MUST be set.
783
priority = self.server.gnutls_priority
784
if priority is None:
785
priority = u"NORMAL"
786
(gnutls.library.functions
787
.gnutls_priority_set_direct(session._c_object,
788
priority, None))
789
790
try:
791
session.handshake()
792
except gnutls.errors.GNUTLSError, error:
793
logger.warning(u"Handshake failed: %s", error)
794
# Do not run session.bye() here: the session is not
795
# established. Just abandon the request.
796
return
797
logger.debug(u"Handshake succeeded")
798
try:
799
fpr = self.fingerprint(self.peer_certificate(session))
800
except (TypeError, gnutls.errors.GNUTLSError), error:
801
logger.warning(u"Bad certificate: %s", error)
802
session.bye()
803
return
804
logger.debug(u"Fingerprint: %s", fpr)
805
806
for c in self.server.clients:
807
if c.fingerprint == fpr:
808
client = c
809
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))
810
411
else:
811
ipc.write(u"NOTFOUND %s\n" % fpr)
812
session.bye()
813
return
814
# Have to check if client.still_valid(), since it is
815
# possible that the client timed out while establishing
816
# the GnuTLS session.
817
if not client.still_valid():
818
ipc.write(u"INVALID %s\n" % client.name)
819
session.bye()
820
return
821
ipc.write(u"SENDING %s\n" % client.name)
822
sent_size = 0
823
while sent_size < len(client.secret):
824
sent = session.send(client.secret[sent_size:])
825
logger.debug(u"Sent: %d, remaining: %d",
826
sent, len(client.secret)
827
- (sent_size + sent))
828
sent_size += sent
412
logger.debug(u"Client not found for fingerprint: %s",
413
fpr)
829
414
session.bye()
830
831
@staticmethod
832
def peer_certificate(session):
833
"Return the peer's OpenPGP certificate as a bytestring"
834
# If not an OpenPGP certificate...
835
if (gnutls.library.functions
836
.gnutls_certificate_type_get(session._c_object)
837
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
838
# ...do the normal thing
839
return session.peer_certificate
840
list_size = ctypes.c_uint(1)
841
cert_list = (gnutls.library.functions
842
.gnutls_certificate_get_peers
843
(session._c_object, ctypes.byref(list_size)))
844
if not bool(cert_list) and list_size.value != 0:
845
raise gnutls.errors.GNUTLSError(u"error getting peer"
846
u" certificate")
847
if list_size.value == 0:
848
return None
849
cert = cert_list[0]
850
return ctypes.string_at(cert.data, cert.size)
851
852
@staticmethod
853
def fingerprint(openpgp):
854
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
855
# New GnuTLS "datum" with the OpenPGP public key
856
datum = (gnutls.library.types
857
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
858
ctypes.POINTER
859
(ctypes.c_ubyte)),
860
ctypes.c_uint(len(openpgp))))
861
# New empty GnuTLS certificate
862
crt = gnutls.library.types.gnutls_openpgp_crt_t()
863
(gnutls.library.functions
864
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
865
# Import the OpenPGP public key into the certificate
866
(gnutls.library.functions
867
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
868
gnutls.library.constants
869
.GNUTLS_OPENPGP_FMT_RAW))
870
# Verify the self signature in the key
871
crtverify = ctypes.c_uint()
872
(gnutls.library.functions
873
.gnutls_openpgp_crt_verify_self(crt, 0,
874
ctypes.byref(crtverify)))
875
if crtverify.value != 0:
876
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
877
raise (gnutls.errors.CertificateSecurityError
878
(u"Verify failed"))
879
# New buffer for the fingerprint
880
buf = ctypes.create_string_buffer(20)
881
buf_len = ctypes.c_size_t()
882
# Get the fingerprint from the certificate into the buffer
883
(gnutls.library.functions
884
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
885
ctypes.byref(buf_len)))
886
# Deinit the certificate
887
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
888
# Convert the buffer to a Python bytestring
889
fpr = ctypes.string_at(buf, buf_len.value)
890
# Convert the bytestring to hexadecimal notation
891
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
892
return hex_fpr
893
894
895
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
896
"""Like socketserver.ForkingMixIn, but also pass a pipe.
897
898
Assumes a gobject.MainLoop event loop.
899
"""
900
def process_request(self, request, client_address):
901
"""Overrides and wraps the original process_request().
902
903
This function creates a new pipe in self.pipe
904
"""
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
907
self).process_request(request, client_address)
908
os.close(self.pipe[1]) # close write end
909
# Call "handle_ipc" for both data and EOF events
910
gobject.io_add_watch(self.pipe[0],
911
gobject.IO_IN | gobject.IO_HUP,
912
self.handle_ipc)
913
def handle_ipc(source, condition):
914
"""Dummy function; override as necessary"""
915
os.close(source)
916
return False
917
918
919
class IPv6_TCPServer(ForkingMixInWithPipe,
920
socketserver.TCPServer, object):
921
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
922
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.
923
428
Attributes:
924
enabled: Boolean; whether this server is activated yet
925
interface: None or a network interface name (string)
926
use_ipv6: Boolean; to use IPv6 or not
927
----
928
clients: set of Client objects
929
gnutls_priority GnuTLS priority string
930
use_dbus: Boolean; to emit D-Bus signals or not
429
options: Command line options
430
clients: Set() of Client objects
931
431
"""
932
def __init__(self, server_address, RequestHandlerClass,
933
interface=None, use_ipv6=True, clients=None,
934
gnutls_priority=None, use_dbus=True):
935
self.enabled = False
936
self.interface = interface
937
if use_ipv6:
938
self.address_family = socket.AF_INET6
939
self.clients = clients
940
self.use_dbus = use_dbus
941
self.gnutls_priority = gnutls_priority
942
socketserver.TCPServer.__init__(self, server_address,
943
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)
944
441
def server_bind(self):
945
442
"""This overrides the normal server_bind() function
946
443
to bind to an interface if one was specified, and also NOT to
947
444
bind to an address or port if they were not specified."""
948
if self.interface is not None:
949
if SO_BINDTODEVICE is None:
950
logger.error(u"SO_BINDTODEVICE does not exist;"
951
u" cannot bind to interface %s",
952
self.interface)
953
else:
954
try:
955
self.socket.setsockopt(socket.SOL_SOCKET,
956
SO_BINDTODEVICE,
957
str(self.interface
958
+ u'\0'))
959
except socket.error, error:
960
if error[0] == errno.EPERM:
961
logger.error(u"No permission to"
962
u" bind to interface %s",
963
self.interface)
964
elif error[0] == errno.ENOPROTOOPT:
965
logger.error(u"SO_BINDTODEVICE not available;"
966
u" cannot bind to interface %s",
967
self.interface)
968
else:
969
raise
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
449
try:
450
self.socket.setsockopt(socket.SOL_SOCKET,
451
socket.SO_BINDTODEVICE,
452
self.options.interface)
453
except socket.error, error:
454
if error[0] == errno.EPERM:
455
logger.warning(u"No permission to"
456
u" bind to interface %s",
457
self.options.interface)
458
else:
459
raise error
970
460
# Only bind(2) the socket if we really need to.
971
461
if self.server_address[0] or self.server_address[1]:
972
462
if not self.server_address[0]:
973
if self.address_family == socket.AF_INET6:
974
any_address = u"::" # in6addr_any
975
else:
976
any_address = socket.INADDR_ANY
977
self.server_address = (any_address,
463
in6addr_any = "::"
464
self.server_address = (in6addr_any,
978
465
self.server_address[1])
979
elif not self.server_address[1]:
466
elif self.server_address[1] is None:
980
467
self.server_address = (self.server_address[0],
981
468
0)
982
# if self.interface:
983
# self.server_address = (self.server_address[0],
984
# 0, # port
985
# 0, # flowinfo
986
# if_nametoindex
987
# (self.interface))
988
return socketserver.TCPServer.server_bind(self)
989
def server_activate(self):
990
if self.enabled:
991
return socketserver.TCPServer.server_activate(self)
992
def enable(self):
993
self.enabled = True
994
def handle_ipc(self, source, condition, file_objects={}):
995
condition_names = {
996
gobject.IO_IN: u"IN", # There is data to read.
997
gobject.IO_OUT: u"OUT", # Data can be written (without
998
# blocking).
999
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1000
gobject.IO_ERR: u"ERR", # Error condition.
1001
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1002
# broken, usually for pipes and
1003
# sockets).
1004
}
1005
conditions_string = ' | '.join(name
1006
for cond, name in
1007
condition_names.iteritems()
1008
if cond & condition)
1009
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1010
conditions_string)
1011
1012
# Turn the pipe file descriptor into a Python file object
1013
if source not in file_objects:
1014
file_objects[source] = os.fdopen(source, u"r", 1)
1015
1016
# Read a line from the file object
1017
cmdline = file_objects[source].readline()
1018
if not cmdline: # Empty line means end of file
1019
# close the IPC pipe
1020
file_objects[source].close()
1021
del file_objects[source]
1022
1023
# Stop calling this function
1024
return False
1025
1026
logger.debug(u"IPC command: %r", cmdline)
1027
1028
# Parse and act on command
1029
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1030
1031
if cmd == u"NOTFOUND":
1032
logger.warning(u"Client not found for fingerprint: %s",
1033
args)
1034
if self.use_dbus:
1035
# Emit D-Bus signal
1036
mandos_dbus_service.ClientNotFound(args)
1037
elif cmd == u"INVALID":
1038
for client in self.clients:
1039
if client.name == args:
1040
logger.warning(u"Client %s is invalid", args)
1041
if self.use_dbus:
1042
# Emit D-Bus signal
1043
client.Rejected()
1044
break
1045
else:
1046
logger.error(u"Unknown client %s is invalid", args)
1047
elif cmd == u"SENDING":
1048
for client in self.clients:
1049
if client.name == args:
1050
logger.info(u"Sending secret to %s", client.name)
1051
client.checked_ok()
1052
if self.use_dbus:
1053
# Emit D-Bus signal
1054
client.ReceivedSecret()
1055
break
1056
else:
1057
logger.error(u"Sending secret to unknown client %s",
1058
args)
1059
else:
1060
logger.error(u"Unknown IPC command: %r", cmdline)
1061
1062
# Keep calling this function
1063
return True
469
return super(type(self), self).server_bind()
1064
470
1065
471
1066
472
def string_to_delta(interval):
1067
473
"""Parse a string and return a datetime.timedelta
1068
1069
>>> string_to_delta(u'7d')
474
475
>>> string_to_delta('7d')
1070
476
datetime.timedelta(7)
1071
>>> string_to_delta(u'60s')
477
>>> string_to_delta('60s')
1072
478
datetime.timedelta(0, 60)
1073
>>> string_to_delta(u'60m')
479
>>> string_to_delta('60m')
1074
480
datetime.timedelta(0, 3600)
1075
>>> string_to_delta(u'24h')
481
>>> string_to_delta('24h')
1076
482
datetime.timedelta(1)
1077
483
>>> string_to_delta(u'1w')
1078
484
datetime.timedelta(7)
1079
>>> string_to_delta(u'5m 30s')
1080
datetime.timedelta(0, 330)
1081
485
"""
1082
timevalue = datetime.timedelta(0)
1083
for s in interval.split():
1084
try:
1085
suffix = unicode(s[-1])
1086
value = int(s[:-1])
1087
if suffix == u"d":
1088
delta = datetime.timedelta(value)
1089
elif suffix == u"s":
1090
delta = datetime.timedelta(0, value)
1091
elif suffix == u"m":
1092
delta = datetime.timedelta(0, 0, 0, 0, value)
1093
elif suffix == u"h":
1094
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1095
elif suffix == u"w":
1096
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1097
else:
1098
raise ValueError
1099
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:
1100
500
raise ValueError
1101
timevalue += delta
1102
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)
1103
574
1104
575
1105
576
def if_nametoindex(interface):
1106
"""Call the C function if_nametoindex(), or equivalent
1107
1108
Note: This function cannot accept a unicode string."""
1109
global if_nametoindex
577
"""Call the C function if_nametoindex()"""
1110
578
try:
1111
if_nametoindex = (ctypes.cdll.LoadLibrary
1112
(ctypes.util.find_library(u"c"))
1113
.if_nametoindex)
579
libc = ctypes.cdll.LoadLibrary("libc.so.6")
580
return libc.if_nametoindex(interface)
1114
581
except (OSError, AttributeError):
1115
logger.warning(u"Doing if_nametoindex the hard way")
1116
def if_nametoindex(interface):
1117
"Get an interface index the hard way, i.e. using fcntl()"
1118
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1119
with closing(socket.socket()) as s:
1120
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1121
struct.pack(str(u"16s16x"),
1122
interface))
1123
interface_index = struct.unpack(str(u"I"),
1124
ifreq[16:20])[0]
1125
return interface_index
1126
return if_nametoindex(interface)
1127
1128
1129
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):
1130
596
"""See daemon(3). Standard BSD Unix function.
1131
1132
597
This should really exist as os.daemon, but it doesn't (yet)."""
1133
598
if os.fork():
1134
599
sys.exit()
1135
600
os.setsid()
1136
601
if not nochdir:
1137
os.chdir(u"/")
1138
if os.fork():
1139
sys.exit()
602
os.chdir("/")
1140
603
if not noclose:
1141
604
# Close all standard open file descriptors
1142
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
605
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
1143
606
if not stat.S_ISCHR(os.fstat(null).st_mode):
1144
607
raise OSError(errno.ENODEV,
1145
u"/dev/null not a character device")
608
"/dev/null not a character device")
1146
609
os.dup2(null, sys.stdin.fileno())
1147
610
os.dup2(null, sys.stdout.fileno())
1148
611
os.dup2(null, sys.stderr.fileno())
1150
613
os.close(null)
1151
614
1152
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
1153
625
def main():
1154
1155
######################################################################
1156
# Parsing of options, both command line and config file
1157
1158
parser = optparse.OptionParser(version = "%%prog %s" % version)
1159
parser.add_option("-i", u"--interface", type=u"string",
1160
metavar="IF", help=u"Bind to interface IF")
1161
parser.add_option("-a", u"--address", type=u"string",
1162
help=u"Address to listen for requests on")
1163
parser.add_option("-p", u"--port", type=u"int",
1164
help=u"Port number to receive requests on")
1165
parser.add_option("--check", action=u"store_true",
1166
help=u"Run self-test")
1167
parser.add_option("--debug", action=u"store_true",
1168
help=u"Debug mode; run in foreground and log to"
1169
u" terminal")
1170
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1171
u" priority string (see GnuTLS documentation)")
1172
parser.add_option("--servicename", type=u"string",
1173
metavar=u"NAME", help=u"Zeroconf service name")
1174
parser.add_option("--configdir", type=u"string",
1175
default=u"/etc/mandos", metavar=u"DIR",
1176
help=u"Directory to search for configuration"
1177
u" files")
1178
parser.add_option("--no-dbus", action=u"store_false",
1179
dest=u"use_dbus", help=u"Do not provide D-Bus"
1180
u" system bus interface")
1181
parser.add_option("--no-ipv6", action=u"store_false",
1182
dest=u"use_ipv6", help=u"Do not use IPv6")
1183
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()
1184
650
1185
651
if options.check:
1186
652
import doctest
1187
653
doctest.testmod()
1188
654
sys.exit()
1189
655
1190
# Default values for config file for server-global settings
1191
server_defaults = { u"interface": u"",
1192
u"address": u"",
1193
u"port": u"",
1194
u"debug": u"False",
1195
u"priority":
1196
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1197
u"servicename": u"Mandos",
1198
u"use_dbus": u"True",
1199
u"use_ipv6": u"True",
1200
}
1201
1202
# Parse config file for server-global settings
1203
server_config = configparser.SafeConfigParser(server_defaults)
1204
del server_defaults
1205
server_config.read(os.path.join(options.configdir,
1206
u"mandos.conf"))
1207
# Convert the SafeConfigParser object to a dict
1208
server_settings = server_config.defaults()
1209
# Use the appropriate methods on the non-string config options
1210
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1211
server_settings[option] = server_config.getboolean(u"DEFAULT",
1212
option)
1213
if server_settings["port"]:
1214
server_settings["port"] = server_config.getint(u"DEFAULT",
1215
u"port")
1216
del server_config
1217
1218
# Override the settings from the config file with command line
1219
# options, if set.
1220
for option in (u"interface", u"address", u"port", u"debug",
1221
u"priority", u"servicename", u"configdir",
1222
u"use_dbus", u"use_ipv6"):
1223
value = getattr(options, option)
1224
if value is not None:
1225
server_settings[option] = value
1226
del options
1227
# Force all strings to be unicode
1228
for option in server_settings.keys():
1229
if type(server_settings[option]) is str:
1230
server_settings[option] = unicode(server_settings[option])
1231
# Now we have our good server settings in "server_settings"
1232
1233
##################################################################
1234
1235
# For convenience
1236
debug = server_settings[u"debug"]
1237
use_dbus = server_settings[u"use_dbus"]
1238
use_ipv6 = server_settings[u"use_ipv6"]
1239
1240
if not debug:
1241
syslogger.setLevel(logging.WARNING)
1242
console.setLevel(logging.WARNING)
1243
1244
if server_settings[u"servicename"] != u"Mandos":
1245
syslogger.setFormatter(logging.Formatter
1246
(u'Mandos (%s) [%%(process)d]:'
1247
u' %%(levelname)s: %%(message)s'
1248
% server_settings[u"servicename"]))
1249
1250
# Parse config file with clients
1251
client_defaults = { u"timeout": u"1h",
1252
u"interval": u"5m",
1253
u"checker": u"fping -q -- %%(host)s",
1254
u"host": u"",
1255
}
1256
client_config = configparser.SafeConfigParser(client_defaults)
1257
client_config.read(os.path.join(server_settings[u"configdir"],
1258
u"clients.conf"))
1259
1260
global mandos_dbus_service
1261
mandos_dbus_service = None
1262
1263
clients = set()
1264
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1265
server_settings[u"port"]),
1266
ClientHandler,
1267
interface=
1268
server_settings[u"interface"],
1269
use_ipv6=use_ipv6,
1270
clients=clients,
1271
gnutls_priority=
1272
server_settings[u"priority"],
1273
use_dbus=use_dbus)
1274
pidfilename = u"/var/run/mandos.pid"
1275
try:
1276
pidfile = open(pidfilename, u"w")
1277
except IOError:
1278
logger.error(u"Could not open file %r", pidfilename)
1279
1280
try:
1281
uid = pwd.getpwnam(u"_mandos").pw_uid
1282
gid = pwd.getpwnam(u"_mandos").pw_gid
1283
except KeyError:
1284
try:
1285
uid = pwd.getpwnam(u"mandos").pw_uid
1286
gid = pwd.getpwnam(u"mandos").pw_gid
1287
except KeyError:
1288
try:
1289
uid = pwd.getpwnam(u"nobody").pw_uid
1290
gid = pwd.getpwnam(u"nobody").pw_gid
1291
except KeyError:
1292
uid = 65534
1293
gid = 65534
1294
try:
1295
os.setgid(gid)
1296
os.setuid(uid)
1297
except OSError, error:
1298
if error[0] != errno.EPERM:
1299
raise error
1300
1301
# Enable all possible GnuTLS debugging
1302
if debug:
1303
# "Use a log level over 10 to enable all debugging options."
1304
# - GnuTLS manual
1305
gnutls.library.functions.gnutls_global_set_log_level(11)
1306
1307
@gnutls.library.types.gnutls_log_func
1308
def debug_gnutls(level, string):
1309
logger.debug(u"GnuTLS: %s", string[:-1])
1310
1311
(gnutls.library.functions
1312
.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")
1313
671
1314
672
global main_loop
673
global bus
674
global server
1315
675
# From the Avahi example code
1316
676
DBusGMainLoop(set_as_default=True )
1317
677
main_loop = gobject.MainLoop()
1318
678
bus = dbus.SystemBus()
679
server = dbus.Interface(
680
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
681
avahi.DBUS_INTERFACE_SERVER )
1319
682
# End of Avahi example code
1320
if use_dbus:
1321
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1322
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1323
service = AvahiService(name = server_settings[u"servicename"],
1324
servicetype = u"_mandos._tcp",
1325
protocol = protocol, bus = bus)
1326
if server_settings["interface"]:
1327
service.interface = (if_nametoindex
1328
(str(server_settings[u"interface"])))
1329
683
1330
client_class = Client
1331
if use_dbus:
1332
client_class = functools.partial(ClientDBus, bus = bus)
1333
clients.update(set(
1334
client_class(name = section,
1335
config= dict(client_config.items(section)))
1336
for section in client_config.sections()))
1337
if not clients:
1338
logger.warning(u"No clients defined")
684
debug = options.debug
1339
685
1340
686
if debug:
1341
# Redirect stdin so all checkers get /dev/null
1342
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1343
os.dup2(null, sys.stdin.fileno())
1344
if null > 2:
1345
os.close(null)
1346
else:
1347
# No console logging
1348
logger.removeHandler(console)
1349
# Close all input and output, do double fork, etc.
1350
daemon()
1351
1352
try:
1353
with closing(pidfile):
1354
pid = os.getpid()
1355
pidfile.write(str(pid) + "\n")
1356
del pidfile
1357
except IOError:
1358
logger.error(u"Could not write to file %r with PID %d",
1359
pidfilename, pid)
1360
except NameError:
1361
# "pidfile" was never created
1362
pass
1363
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)
1364
709
1365
710
def cleanup():
1366
711
"Cleanup function; run on exit"
1367
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
1368
718
1369
719
while clients:
1370
720
client = clients.pop()
1371
client.disable_hook = None
1372
client.disable()
721
client.stop_hook = None
722
client.stop()
1373
723
1374
724
atexit.register(cleanup)
1375
725
1376
726
if not debug:
1377
727
signal.signal(signal.SIGINT, signal.SIG_IGN)
1378
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1379
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1380
1381
if use_dbus:
1382
class MandosDBusService(dbus.service.Object):
1383
"""A D-Bus proxy object"""
1384
def __init__(self):
1385
dbus.service.Object.__init__(self, bus, u"/")
1386
_interface = u"se.bsnet.fukt.Mandos"
1387
1388
@dbus.service.signal(_interface, signature=u"oa{sv}")
1389
def ClientAdded(self, objpath, properties):
1390
"D-Bus signal"
1391
pass
1392
1393
@dbus.service.signal(_interface, signature=u"s")
1394
def ClientNotFound(self, fingerprint):
1395
"D-Bus signal"
1396
pass
1397
1398
@dbus.service.signal(_interface, signature=u"os")
1399
def ClientRemoved(self, objpath, name):
1400
"D-Bus signal"
1401
pass
1402
1403
@dbus.service.method(_interface, out_signature=u"ao")
1404
def GetAllClients(self):
1405
"D-Bus method"
1406
return dbus.Array(c.dbus_object_path for c in clients)
1407
1408
@dbus.service.method(_interface,
1409
out_signature=u"a{oa{sv}}")
1410
def GetAllClientsWithProperties(self):
1411
"D-Bus method"
1412
return dbus.Dictionary(
1413
((c.dbus_object_path, c.GetAllProperties())
1414
for c in clients),
1415
signature=u"oa{sv}")
1416
1417
@dbus.service.method(_interface, in_signature=u"o")
1418
def RemoveClient(self, object_path):
1419
"D-Bus method"
1420
for c in clients:
1421
if c.dbus_object_path == object_path:
1422
clients.remove(c)
1423
c.remove_from_connection()
1424
# Don't signal anything except ClientRemoved
1425
c.disable(signal=False)
1426
# Emit D-Bus signal
1427
self.ClientRemoved(object_path, c.name)
1428
return
1429
raise KeyError
1430
1431
del _interface
1432
1433
mandos_dbus_service = MandosDBusService()
728
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
729
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1434
730
1435
731
for client in clients:
1436
if use_dbus:
1437
# Emit D-Bus signal
1438
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1439
client.GetAllProperties())
1440
client.enable()
1441
1442
tcp_server.enable()
1443
tcp_server.server_activate()
1444
1445
# Find out what port we got
1446
service.port = tcp_server.socket.getsockname()[1]
1447
if use_ipv6:
1448
logger.info(u"Now listening on address %r, port %d,"
1449
" flowinfo %d, scope_id %d"
1450
% tcp_server.socket.getsockname())
1451
else: # IPv4
1452
logger.info(u"Now listening on address %r, port %d"
1453
% tcp_server.socket.getsockname())
1454
1455
#service.interface = tcp_server.socket.getsockname()[3]
1456
1457
try:
1458
# From the Avahi example code
1459
try:
1460
service.activate()
1461
except dbus.exceptions.DBusException, error:
1462
logger.critical(u"DBusException: %s", error)
1463
sys.exit(1)
1464
# End of Avahi example code
1465
1466
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1467
lambda *args, **kwargs:
1468
(tcp_server.handle_request
1469
(*args[2:], **kwargs) or True))
1470
1471
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
1472
763
main_loop.run()
1473
except AvahiError, error:
1474
logger.critical(u"AvahiError: %s", error)
1475
sys.exit(1)
1476
764
except KeyboardInterrupt:
1477
765
if debug:
1478
print >> sys.stderr
1479
logger.debug(u"Server received KeyboardInterrupt")
1480
logger.debug(u"Server exiting")
766
print
767
768
sys.exit(exitstatus)
1481
769
1482
770
if __name__ == '__main__':
1483
771
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0