To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to server.py
- browse files at revision 24
- compare with another revision
- download diff
- download tarball
- view history from revision 24
- Committer: Teddy Hogeborn
- Date: 2008-07-22 01:59:47 UTC
- Revision ID: teddy@fukt.bsnet.se-20080722015947-y7o6keji020nvrhw
* Makefile (OPTIMIZE): New; optimize for size.
(CFLAGS): Use $(OPTIMIZE).
(CFLAGS): Use $(OPTIMIZE).
- files added:
- ca.pem
- files removed:
- server.conf
- files renamed:
- clients.conf => mandos-clients.conf
- 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
# following functions: "AvahiService.add", "AvahiService.remove",
9
# following functions: "add_service", "remove_service",
10
10
# "server_state_changed", "entry_group_state_changed", and some lines
11
11
# in "main".
12
12
#
13
# Everything else is
14
# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
13
# Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
14
# Påhlsson.
15
15
#
16
16
# This program is free software: you can redistribute it and/or modify
17
17
# it under the terms of the GNU General Public License as published by
26
26
# You should have received a copy of the GNU General Public License
27
27
# along with this program. If not, see <http://www.gnu.org/licenses/>.
28
28
#
29
# Contact the authors at <mandos@fukt.bsnet.se>.
29
# Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
30
# <https://www.fukt.bsnet.se/~teddy/>.
30
31
#
31
32
32
33
from __future__ import division
65
66
#
66
67
# This server announces itself as a Zeroconf service. Connecting
67
68
# clients use the TLS protocol, with the unusual quirk that this
68
# server program acts as a TLS "client" while a connecting client acts
69
# as a TLS "server". The client (acting as a TLS "server") must
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
70
71
# supply an OpenPGP certificate, and the fingerprint of this
71
72
# certificate is used by this server to look up (in a list read from a
72
73
# file at start time) which binary blob to give the client. No other
81
82
logger.addHandler(syslogger)
82
83
del syslogger
83
84
84
85
class AvahiError(Exception):
86
def __init__(self, value):
87
self.value = value
88
def __str__(self):
89
return repr(self.value)
90
91
class AvahiServiceError(AvahiError):
92
pass
93
94
class AvahiGroupError(AvahiError):
95
pass
96
97
98
class AvahiService(object):
99
"""
100
interface: integer; avahi.IF_UNSPEC or an interface index.
101
Used to optionally bind to the specified interface.
102
name = string; Example: "Mandos"
103
type = string; Example: "_mandos._tcp".
104
See <http://www.dns-sd.org/ServiceTypes.html>
105
port = integer; what port to announce
106
TXT = list of strings; TXT record for the service
107
domain = string; Domain to publish on, default to .local if empty.
108
host = string; Host to publish records for, default to localhost
109
if empty.
110
max_renames = integer; maximum number of renames
111
rename_count = integer; counter so we only rename after collisions
112
a sensible number of times
113
"""
114
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
type = None, port = None, TXT = None, domain = "",
116
host = "", max_renames = 12):
117
"""An Avahi (Zeroconf) service. """
118
self.interface = interface
119
self.name = name
120
self.type = type
121
self.port = port
122
if TXT is None:
123
self.TXT = []
124
else:
125
self.TXT = TXT
126
self.domain = domain
127
self.host = host
128
self.rename_count = 0
129
def rename(self):
130
"""Derived from the Avahi example code"""
131
if self.rename_count >= self.max_renames:
132
logger.critical(u"No suitable service name found after %i"
133
u" retries, exiting.", rename_count)
134
raise AvahiServiceError("Too many renames")
135
name = server.GetAlternativeServiceName(name)
136
logger.error(u"Changing name to %r ...", name)
137
self.remove()
138
self.add()
139
self.rename_count += 1
140
def remove(self):
141
"""Derived from the Avahi example code"""
142
if group is not None:
143
group.Reset()
144
def add(self):
145
"""Derived from the Avahi example code"""
146
global group
147
if group is None:
148
group = dbus.Interface\
149
(bus.get_object(avahi.DBUS_NAME,
150
server.EntryGroupNew()),
151
avahi.DBUS_INTERFACE_ENTRY_GROUP)
152
group.connect_to_signal('StateChanged',
153
entry_group_state_changed)
154
logger.debug(u"Adding service '%s' of type '%s' ...",
155
service.name, service.type)
156
group.AddService(
157
self.interface, # interface
158
avahi.PROTO_INET6, # protocol
159
dbus.UInt32(0), # flags
160
self.name, self.type,
161
self.domain, self.host,
162
dbus.UInt16(self.port),
163
avahi.string_array_to_txt_array(self.TXT))
164
group.Commit()
165
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
166
89
# From the Avahi example code:
167
group = None # our entry group
90
serviceName = "Mandos"
91
serviceType = "_mandos._tcp" # http://www.dns-sd.org/ServiceTypes.html
92
servicePort = None # Not known at startup
93
serviceTXT = [] # TXT record for the service
94
domain = "" # Domain to publish on, default to .local
95
host = "" # Host to publish records for, default to localhost
96
group = None #our entry group
97
rename_count = 12 # Counter so we only rename after collisions a
98
# sensible number of times
168
99
# End of Avahi example code
169
100
170
101
176
107
uniquely identify the client
177
108
secret: bytestring; sent verbatim (over TLS) to client
178
109
fqdn: string (FQDN); available for use by the checker command
179
created: datetime.datetime(); object creation, not client host
180
last_checked_ok: datetime.datetime() or None if not yet checked OK
181
timeout: datetime.timedelta(); How long from last_checked_ok
182
until this client is invalid
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
183
114
interval: datetime.timedelta(); How often to start a new checker
184
115
stop_hook: If set, called by stop() as stop_hook(self)
185
116
checker: subprocess.Popen(); a running checker process used
186
117
to see if the client lives.
187
'None' if no process is running.
118
Is None if no process is running.
188
119
checker_initiator_tag: a gobject event source tag, or None
189
120
stop_initiator_tag: - '' -
190
121
checker_callback_tag: - '' -
191
122
checker_command: string; External command which is run to check if
192
client lives. %() expansions are done at
123
client lives. %()s expansions are done at
193
124
runtime with vars(self) as dict, so that for
194
125
instance %(name)s can be used in the command.
195
126
Private attibutes:
196
127
_timeout: Real variable for 'timeout'
197
128
_interval: Real variable for 'interval'
198
_timeout_milliseconds: Used when calling gobject.timeout_add()
129
_timeout_milliseconds: Used by gobject.timeout_add()
199
130
_interval_milliseconds: - '' -
200
131
"""
201
132
def _set_timeout(self, timeout):
221
152
interval = property(lambda self: self._interval,
222
153
_set_interval)
223
154
del _set_interval
224
def __init__(self, name = None, stop_hook=None, config={}):
155
def __init__(self, name=None, options=None, stop_hook=None,
156
fingerprint=None, secret=None, secfile=None,
157
fqdn=None, timeout=None, interval=-1, checker=None):
225
158
"""Note: the 'checker' argument sets the 'checker_command'
226
159
attribute and not the 'checker' attribute.."""
227
160
self.name = name
228
logger.debug(u"Creating client %r", self.name)
229
161
# Uppercase and remove spaces from fingerprint
230
162
# for later comparison purposes with return value of
231
163
# the fingerprint() function
232
self.fingerprint = config["fingerprint"].upper()\
233
.replace(u" ", u"")
234
logger.debug(u" Fingerprint: %s", self.fingerprint)
235
if "secret" in config:
236
self.secret = config["secret"].decode(u"base64")
237
elif "secfile" in config:
238
sf = open(config["secfile"])
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)
239
169
self.secret = sf.read()
240
170
sf.close()
241
171
else:
242
raise TypeError(u"No secret or secfile for client %s"
243
% self.name)
244
self.fqdn = config.get("fqdn", "")
172
raise RuntimeError(u"No secret or secfile for client %s"
173
% self.name)
174
self.fqdn = fqdn # string
245
175
self.created = datetime.datetime.now()
246
self.last_checked_ok = None
247
self.timeout = string_to_delta(config["timeout"])
248
self.interval = string_to_delta(config["interval"])
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)
249
185
self.stop_hook = stop_hook
250
186
self.checker = None
251
187
self.checker_initiator_tag = None
252
188
self.stop_initiator_tag = None
253
189
self.checker_callback_tag = None
254
self.check_command = config["checker"]
190
self.check_command = checker
255
191
def start(self):
256
192
"""Start this client's checker and timeout hooks"""
257
193
# Schedule a new checker to be started an 'interval' from now,
267
203
self.stop)
268
204
def stop(self):
269
205
"""Stop this client.
270
The possibility that a client might be restarted is left open,
271
but not currently used."""
206
The possibility that this client might be restarted is left
207
open, but not currently used."""
272
208
# If this client doesn't have a secret, it is already stopped.
273
209
if self.secret:
274
logger.info(u"Stopping client %s", self.name)
210
logger.debug(u"Stopping client %s", self.name)
275
211
self.secret = None
276
212
else:
277
213
return False
278
if getattr(self, "stop_initiator_tag", False):
214
if hasattr(self, "stop_initiator_tag") \
215
and self.stop_initiator_tag:
279
216
gobject.source_remove(self.stop_initiator_tag)
280
217
self.stop_initiator_tag = None
281
if getattr(self, "checker_initiator_tag", False):
218
if hasattr(self, "checker_initiator_tag") \
219
and self.checker_initiator_tag:
282
220
gobject.source_remove(self.checker_initiator_tag)
283
221
self.checker_initiator_tag = None
284
222
self.stop_checker()
296
234
self.checker = None
297
235
if os.WIFEXITED(condition) \
298
236
and (os.WEXITSTATUS(condition) == 0):
299
logger.info(u"Checker for %(name)s succeeded",
300
vars(self))
301
self.last_checked_ok = now
237
logger.debug(u"Checker for %(name)s succeeded",
238
vars(self))
239
self.last_seen = now
302
240
gobject.source_remove(self.stop_initiator_tag)
303
241
self.stop_initiator_tag = gobject.timeout_add\
304
242
(self._timeout_milliseconds,
307
245
logger.warning(u"Checker for %(name)s crashed?",
308
246
vars(self))
309
247
else:
310
logger.info(u"Checker for %(name)s failed",
311
vars(self))
248
logger.debug(u"Checker for %(name)s failed",
249
vars(self))
312
250
def start_checker(self):
313
251
"""Start a new checker subprocess if one is not running.
314
252
If a checker already exists, leave it running and do
323
261
# is as it should be.
324
262
if self.checker is None:
325
263
try:
326
# In case check_command has exactly one % operator
327
264
command = self.check_command % self.fqdn
328
265
except TypeError:
329
# Escape attributes for the shell
330
266
escaped_attrs = dict((key, re.escape(str(val)))
331
267
for key, val in
332
268
vars(self).iteritems())
333
269
try:
334
270
command = self.check_command % escaped_attrs
335
271
except TypeError, error:
336
logger.error(u'Could not format string "%s":'
337
u' %s', self.check_command, error)
272
logger.critical(u'Could not format string "%s":'
273
u' %s', self.check_command, error)
338
274
return True # Try again later
339
275
try:
340
logger.info(u"Starting checker %r for %s",
341
command, self.name)
342
self.checker = subprocess.Popen(command,
343
close_fds=True,
344
shell=True, cwd="/")
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="/")
345
282
self.checker_callback_tag = gobject.child_watch_add\
346
283
(self.checker.pid,
347
284
self.checker_callback)
355
292
if self.checker_callback_tag:
356
293
gobject.source_remove(self.checker_callback_tag)
357
294
self.checker_callback_tag = None
358
if getattr(self, "checker", None) is None:
295
if not hasattr(self, "checker") or self.checker is None:
359
296
return
360
297
logger.debug("Stopping checker for %(name)s", vars(self))
361
298
try:
364
301
#if self.checker.poll() is None:
365
302
# os.kill(self.checker.pid, signal.SIGKILL)
366
303
except OSError, error:
367
if error.errno != errno.ESRCH: # No such process
304
if error.errno != errno.ESRCH:
368
305
raise
369
306
self.checker = None
370
def still_valid(self):
307
def still_valid(self, now=None):
371
308
"""Has the timeout not yet passed for this client?"""
372
now = datetime.datetime.now()
373
if self.last_checked_ok is None:
309
if now is None:
310
now = datetime.datetime.now()
311
if self.last_seen is None:
374
312
return now < (self.created + self.timeout)
375
313
else:
376
return now < (self.last_checked_ok + self.timeout)
314
return now < (self.last_seen + self.timeout)
377
315
378
316
379
317
def peer_certificate(session):
430
368
Note: This will run in its own forked process."""
431
369
432
370
def handle(self):
433
logger.info(u"TCP connection from: %s",
371
logger.debug(u"TCP connection from: %s",
434
372
unicode(self.client_address))
435
session = gnutls.connection.ClientSession\
436
(self.request, gnutls.connection.X509Credentials())
437
438
line = self.request.makefile().readline()
439
logger.debug(u"Protocol version: %r", line)
440
try:
441
if int(line.strip().split()[0]) > 1:
442
raise RuntimeError
443
except (ValueError, IndexError, RuntimeError), error:
444
logger.error(u"Unknown protocol version: %s", error)
445
return
446
447
# Note: gnutls.connection.X509Credentials is really a generic
448
# GnuTLS certificate credentials object so long as no X.509
449
# keys are added to it. Therefore, we can use it here despite
450
# using OpenPGP certificates.
373
session = gnutls.connection.ClientSession(self.request,
374
gnutls.connection.\
375
X509Credentials())
451
376
452
377
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
453
378
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
454
379
# "+DHE-DSS"))
455
priority = "NORMAL" # Fallback default, since this
456
# MUST be set.
457
if self.server.settings["priority"]:
458
priority = self.server.settings["priority"]
380
priority = "SECURE256"
381
459
382
gnutls.library.functions.gnutls_priority_set_direct\
460
383
(session._c_object, priority, None);
461
384
462
385
try:
463
386
session.handshake()
464
387
except gnutls.errors.GNUTLSError, error:
465
logger.warning(u"Handshake failed: %s", error)
388
logger.debug(u"Handshake failed: %s", error)
466
389
# Do not run session.bye() here: the session is not
467
390
# established. Just abandon the request.
468
391
return
469
392
try:
470
393
fpr = fingerprint(peer_certificate(session))
471
394
except (TypeError, gnutls.errors.GNUTLSError), error:
472
logger.warning(u"Bad certificate: %s", error)
395
logger.debug(u"Bad certificate: %s", error)
473
396
session.bye()
474
397
return
475
398
logger.debug(u"Fingerprint: %s", fpr)
478
401
if c.fingerprint == fpr:
479
402
client = c
480
403
break
481
if not client:
482
logger.warning(u"Client not found for fingerprint: %s",
483
fpr)
484
session.bye()
485
return
486
404
# Have to check if client.still_valid(), since it is possible
487
405
# that the client timed out while establishing the GnuTLS
488
406
# session.
489
if not client.still_valid():
490
logger.warning(u"Client %(name)s is invalid",
491
vars(client))
407
if (not client) or (not client.still_valid()):
408
if client:
409
logger.debug(u"Client %(name)s is invalid",
410
vars(client))
411
else:
412
logger.debug(u"Client not found for fingerprint: %s",
413
fpr)
492
414
session.bye()
493
415
return
494
416
sent_size = 0
504
426
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
505
427
"""IPv6 TCP server. Accepts 'None' as address and/or port.
506
428
Attributes:
507
settings: Server settings
429
options: Command line options
508
430
clients: Set() of Client objects
509
431
"""
510
432
address_family = socket.AF_INET6
511
433
def __init__(self, *args, **kwargs):
512
if "settings" in kwargs:
513
self.settings = kwargs["settings"]
514
del kwargs["settings"]
434
if "options" in kwargs:
435
self.options = kwargs["options"]
436
del kwargs["options"]
515
437
if "clients" in kwargs:
516
438
self.clients = kwargs["clients"]
517
439
del kwargs["clients"]
520
442
"""This overrides the normal server_bind() function
521
443
to bind to an interface if one was specified, and also NOT to
522
444
bind to an address or port if they were not specified."""
523
if self.settings["interface"]:
524
# 25 is from /usr/include/asm-i486/socket.h
525
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
445
if self.options.interface:
446
if not hasattr(socket, "SO_BINDTODEVICE"):
447
# From /usr/include/asm-i486/socket.h
448
socket.SO_BINDTODEVICE = 25
526
449
try:
527
450
self.socket.setsockopt(socket.SOL_SOCKET,
528
SO_BINDTODEVICE,
529
self.settings["interface"])
451
socket.SO_BINDTODEVICE,
452
self.options.interface)
530
453
except socket.error, error:
531
454
if error[0] == errno.EPERM:
532
logger.error(u"No permission to"
533
u" bind to interface %s",
534
self.settings["interface"])
455
logger.warning(u"No permission to"
456
u" bind to interface %s",
457
self.options.interface)
535
458
else:
536
459
raise error
537
460
# Only bind(2) the socket if we really need to.
580
503
return delta
581
504
582
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
583
539
def server_state_changed(state):
584
540
"""Derived from the Avahi example code"""
585
541
if state == avahi.SERVER_COLLISION:
586
logger.error(u"Server name collision")
587
service.remove()
542
logger.warning(u"Server name collision")
543
remove_service()
588
544
elif state == avahi.SERVER_RUNNING:
589
service.add()
545
add_service()
590
546
591
547
592
548
def entry_group_state_changed(state, error):
593
549
"""Derived from the Avahi example code"""
550
global serviceName, server, rename_count
551
594
552
logger.debug(u"state change: %i", state)
595
553
596
554
if state == avahi.ENTRY_GROUP_ESTABLISHED:
597
555
logger.debug(u"Service established.")
598
556
elif state == avahi.ENTRY_GROUP_COLLISION:
599
logger.warning(u"Service name collision.")
600
service.rename()
557
558
rename_count = rename_count - 1
559
if rename_count > 0:
560
name = server.GetAlternativeServiceName(name)
561
logger.warning(u"Service name collision, "
562
u"changing name to '%s' ...", name)
563
remove_service()
564
add_service()
565
566
else:
567
logger.error(u"No suitable service name found after %i"
568
u" retries, exiting.", n_rename)
569
killme(1)
601
570
elif state == avahi.ENTRY_GROUP_FAILURE:
602
logger.critical(u"Error in group state changed %s",
603
unicode(error))
604
raise AvahiGroupError("State changed: %s", str(error))
571
logger.error(u"Error in group state changed %s",
572
unicode(error))
573
killme(1)
574
605
575
606
576
def if_nametoindex(interface):
607
"""Call the C function if_nametoindex(), or equivalent"""
608
global if_nametoindex
577
"""Call the C function if_nametoindex()"""
609
578
try:
610
if "ctypes.util" not in sys.modules:
611
import ctypes.util
612
if_nametoindex = ctypes.cdll.LoadLibrary\
613
(ctypes.util.find_library("c")).if_nametoindex
579
libc = ctypes.cdll.LoadLibrary("libc.so.6")
580
return libc.if_nametoindex(interface)
614
581
except (OSError, AttributeError):
615
582
if "struct" not in sys.modules:
616
583
import struct
617
584
if "fcntl" not in sys.modules:
618
585
import fcntl
619
def if_nametoindex(interface):
620
"Get an interface index the hard way, i.e. using fcntl()"
621
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
622
s = socket.socket()
623
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
624
struct.pack("16s16x", interface))
625
s.close()
626
interface_index = struct.unpack("I", ifreq[16:20])[0]
627
return interface_index
628
return if_nametoindex(interface)
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
629
593
630
594
631
595
def daemon(nochdir, noclose):
638
602
os.chdir("/")
639
603
if not noclose:
640
604
# Close all standard open file descriptors
641
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
605
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
642
606
if not stat.S_ISCHR(os.fstat(null).st_mode):
643
607
raise OSError(errno.ENODEV,
644
608
"/dev/null not a character device")
649
613
os.close(null)
650
614
651
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
652
625
def main():
626
global exitstatus
627
exitstatus = 0
653
628
global main_loop_started
654
629
main_loop_started = False
655
630
656
631
parser = OptionParser()
657
632
parser.add_option("-i", "--interface", type="string",
658
metavar="IF", help="Bind to interface IF")
659
parser.add_option("-a", "--address", type="string",
633
default=None, metavar="IF",
634
help="Bind to interface IF")
635
parser.add_option("-a", "--address", type="string", default=None,
660
636
help="Address to listen for requests on")
661
parser.add_option("-p", "--port", type="int",
637
parser.add_option("-p", "--port", type="int", default=None,
662
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")
663
645
parser.add_option("--check", action="store_true", default=False,
664
646
help="Run self-test")
665
647
parser.add_option("--debug", action="store_true", default=False,
666
help="Debug mode; run in foreground and log to"
667
" terminal")
668
parser.add_option("--priority", type="string", help="GnuTLS"
669
" priority string (see GnuTLS documentation)")
670
parser.add_option("--servicename", type="string", metavar="NAME",
671
help="Zeroconf service name")
672
parser.add_option("--configdir", type="string",
673
default="/etc/mandos", metavar="DIR",
674
help="Directory to search for configuration"
675
" files")
648
help="Debug mode")
676
649
(options, args) = parser.parse_args()
677
650
678
651
if options.check:
680
653
doctest.testmod()
681
654
sys.exit()
682
655
683
# Default values for config file for server-global settings
684
server_defaults = { "interface": "",
685
"address": "",
686
"port": "",
687
"debug": "False",
688
"priority":
689
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
690
"servicename": "Mandos",
691
}
692
693
# Parse config file for server-global settings
694
server_config = ConfigParser.SafeConfigParser(server_defaults)
695
del server_defaults
696
server_config.read(os.path.join(options.configdir, "server.conf"))
697
server_section = "server"
698
# Convert the SafeConfigParser object to a dict
699
server_settings = dict(server_config.items(server_section))
700
# Use getboolean on the boolean config option
701
server_settings["debug"] = server_config.getboolean\
702
(server_section, "debug")
703
del server_config
704
705
# Override the settings from the config file with command line
706
# options, if set.
707
for option in ("interface", "address", "port", "debug",
708
"priority", "servicename", "configdir"):
709
value = getattr(options, option)
710
if value is not None:
711
server_settings[option] = value
712
del options
713
# Now we have our good server settings in "server_settings"
714
715
# Parse config file with clients
716
client_defaults = { "timeout": "1h",
717
"interval": "5m",
718
"checker": "fping -q -- %%(fqdn)s",
719
}
720
client_config = ConfigParser.SafeConfigParser(client_defaults)
721
client_config.read(os.path.join(server_settings["configdir"],
722
"clients.conf"))
723
724
global service
725
service = AvahiService(name = server_settings["servicename"],
726
type = "_mandos._tcp", );
727
if server_settings["interface"]:
728
service.interface = if_nametoindex(server_settings["interface"])
656
# Parse the time arguments
657
try:
658
options.timeout = string_to_delta(options.timeout)
659
except ValueError:
660
parser.error("option --timeout: Unparseable time")
661
try:
662
options.interval = string_to_delta(options.interval)
663
except ValueError:
664
parser.error("option --interval: Unparseable time")
665
666
# Parse config file
667
defaults = { "checker": "fping -q -- %%(fqdn)s" }
668
client_config = ConfigParser.SafeConfigParser(defaults)
669
#client_config.readfp(open("global.conf"), "global.conf")
670
client_config.read("mandos-clients.conf")
729
671
730
672
global main_loop
731
673
global bus
739
681
avahi.DBUS_INTERFACE_SERVER )
740
682
# End of Avahi example code
741
683
742
debug = server_settings["debug"]
684
debug = options.debug
743
685
744
686
if debug:
745
687
console = logging.StreamHandler()
753
695
def remove_from_clients(client):
754
696
clients.remove(client)
755
697
if not clients:
756
logger.critical(u"No clients left, exiting")
757
sys.exit()
698
logger.debug(u"No clients left, exiting")
699
killme()
758
700
759
clients.update(Set(Client(name = section,
701
clients.update(Set(Client(name=section, options=options,
760
702
stop_hook = remove_from_clients,
761
config
762
= dict(client_config.items(section)))
703
**(dict(client_config\
704
.items(section))))
763
705
for section in client_config.sections()))
764
706
765
707
if not debug:
783
725
784
726
if not debug:
785
727
signal.signal(signal.SIGINT, signal.SIG_IGN)
786
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
787
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
728
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
729
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
788
730
789
731
for client in clients:
790
732
client.start()
791
733
792
tcp_server = IPv6_TCPServer((server_settings["address"],
793
server_settings["port"]),
734
tcp_server = IPv6_TCPServer((options.address, options.port),
794
735
tcp_handler,
795
settings=server_settings,
736
options=options,
796
737
clients=clients)
797
# Find out what port we got
798
service.port = tcp_server.socket.getsockname()[1]
799
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
800
u" scope_id %d" % tcp_server.socket.getsockname())
801
802
#service.interface = tcp_server.socket.getsockname()[3]
803
804
try:
805
# From the Avahi example code
806
server.connect_to_signal("StateChanged", server_state_changed)
807
try:
808
server_state_changed(server.GetState())
809
except dbus.exceptions.DBusException, error:
810
logger.critical(u"DBusException: %s", error)
811
sys.exit(1)
812
# End of Avahi example code
813
814
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
815
lambda *args, **kwargs:
816
tcp_server.handle_request\
817
(*args[2:], **kwargs) or True)
818
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:
819
761
logger.debug("Starting main loop")
820
762
main_loop_started = True
821
763
main_loop.run()
822
except AvahiError, error:
823
logger.critical(u"AvahiError: %s" + unicode(error))
824
sys.exit(1)
825
764
except KeyboardInterrupt:
826
765
if debug:
827
766
print
767
768
sys.exit(exitstatus)
828
769
829
770
if __name__ == '__main__':
830
771
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0