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- Committer: Teddy Hogeborn
- Date: 2012-05-06 17:37:23 UTC
- Revision ID: teddy@recompile.se-20120506173723-znhgx61gpqp1rfor
* mandos (main.cleanup): Use tempfile.NamedTemporaryFile() instead of
tempfile.mkstemp().
tempfile.mkstemp().
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files removed:
- debian/mandos-client.config
- files renamed:
- mandos-list => mandos-ctl
- files modified:
- .bzrignore
added
removed
mandos
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" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
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".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
import SocketServer
37
import SocketServer as socketserver
37
38
import socket
38
from optparse import OptionParser
39
import argparse
39
40
import datetime
40
41
import errno
41
42
import gnutls.crypto
44
45
import gnutls.library.functions
45
46
import gnutls.library.constants
46
47
import gnutls.library.types
47
import ConfigParser
48
import ConfigParser as configparser
48
49
import sys
49
50
import re
50
51
import os
51
52
import signal
52
from sets import Set
53
53
import subprocess
54
54
import atexit
55
55
import stat
56
56
import logging
57
57
import logging.handlers
58
58
import pwd
59
from contextlib import closing
59
import contextlib
60
import struct
61
import fcntl
62
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
import itertools
60
69
61
70
import dbus
62
71
import dbus.service
65
74
from dbus.mainloop.glib import DBusGMainLoop
66
75
import ctypes
67
76
import ctypes.util
68
69
version = "1.0.2"
70
71
logger = logging.Logger('mandos')
77
import xml.dom.minidom
78
import inspect
79
import GnuPGInterface
80
81
try:
82
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
83
except AttributeError:
84
try:
85
from IN import SO_BINDTODEVICE
86
except ImportError:
87
SO_BINDTODEVICE = None
88
89
version = "1.5.3"
90
stored_state_file = "clients.pickle"
91
92
logger = logging.getLogger()
72
93
syslogger = (logging.handlers.SysLogHandler
73
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
address = "/dev/log"))
75
syslogger.setFormatter(logging.Formatter
76
('Mandos: %(levelname)s: %(message)s'))
77
logger.addHandler(syslogger)
78
79
console = logging.StreamHandler()
80
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
' %(message)s'))
82
logger.addHandler(console)
95
address = str("/dev/log")))
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
119
' %(message)s'))
120
logger.addHandler(syslogger)
121
122
if debug:
123
console = logging.StreamHandler()
124
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
125
' [%(process)d]:'
126
' %(levelname)s:'
127
' %(message)s'))
128
logger.addHandler(console)
129
logger.setLevel(level)
130
131
132
class PGPError(Exception):
133
"""Exception if encryption/decryption fails"""
134
pass
135
136
137
class PGPEngine(object):
138
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
def __init__(self):
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.gnupg.options.meta_interactive = False
144
self.gnupg.options.homedir = self.tempdir
145
self.gnupg.options.extra_args.extend(['--force-mdc',
146
'--quiet',
147
'--no-use-agent'])
148
149
def __enter__(self):
150
return self
151
152
def __exit__ (self, exc_type, exc_value, traceback):
153
self._cleanup()
154
return False
155
156
def __del__(self):
157
self._cleanup()
158
159
def _cleanup(self):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
164
for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
176
177
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
180
try:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
185
f.write(data)
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
188
proc.wait()
189
except IOError as e:
190
raise PGPError(e)
191
self.gnupg.passphrase = None
192
return ciphertext
193
194
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
197
try:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
202
f.write(data)
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
205
proc.wait()
206
except IOError as e:
207
raise PGPError(e)
208
self.gnupg.passphrase = None
209
return decrypted_plaintext
210
83
211
84
212
class AvahiError(Exception):
85
213
def __init__(self, value, *args, **kwargs):
97
225
98
226
class AvahiService(object):
99
227
"""An Avahi (Zeroconf) service.
228
100
229
Attributes:
101
230
interface: integer; avahi.IF_UNSPEC or an interface index.
102
231
Used to optionally bind to the specified interface.
110
239
max_renames: integer; maximum number of renames
111
240
rename_count: integer; counter so we only rename after collisions
112
241
a sensible number of times
242
group: D-Bus Entry Group
243
server: D-Bus Server
244
bus: dbus.SystemBus()
113
245
"""
246
114
247
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
248
servicetype = None, port = None, TXT = None,
116
domain = "", host = "", max_renames = 32768):
249
domain = "", host = "", max_renames = 32768,
250
protocol = avahi.PROTO_UNSPEC, bus = None):
117
251
self.interface = interface
118
252
self.name = name
119
253
self.type = servicetype
123
257
self.host = host
124
258
self.rename_count = 0
125
259
self.max_renames = max_renames
260
self.protocol = protocol
261
self.group = None # our entry group
262
self.server = None
263
self.bus = bus
264
self.entry_group_state_changed_match = None
265
126
266
def rename(self):
127
267
"""Derived from the Avahi example code"""
128
268
if self.rename_count >= self.max_renames:
129
logger.critical(u"No suitable Zeroconf service name found"
130
u" after %i retries, exiting.",
269
logger.critical("No suitable Zeroconf service name found"
270
" after %i retries, exiting.",
131
271
self.rename_count)
132
raise AvahiServiceError(u"Too many renames")
133
self.name = server.GetAlternativeServiceName(self.name)
134
logger.info(u"Changing Zeroconf service name to %r ...",
135
str(self.name))
136
syslogger.setFormatter(logging.Formatter
137
('Mandos (%s): %%(levelname)s:'
138
' %%(message)s' % self.name))
272
raise AvahiServiceError("Too many renames")
273
self.name = unicode(self.server
274
.GetAlternativeServiceName(self.name))
275
logger.info("Changing Zeroconf service name to %r ...",
276
self.name)
139
277
self.remove()
140
self.add()
278
try:
279
self.add()
280
except dbus.exceptions.DBusException as error:
281
logger.critical("D-Bus Exception", exc_info=error)
282
self.cleanup()
283
os._exit(1)
141
284
self.rename_count += 1
285
142
286
def remove(self):
143
287
"""Derived from the Avahi example code"""
144
if group is not None:
145
group.Reset()
288
if self.entry_group_state_changed_match is not None:
289
self.entry_group_state_changed_match.remove()
290
self.entry_group_state_changed_match = None
291
if self.group is not None:
292
self.group.Reset()
293
146
294
def add(self):
147
295
"""Derived from the Avahi example code"""
148
global group
149
if group is None:
150
group = dbus.Interface(bus.get_object
151
(avahi.DBUS_NAME,
152
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
group.connect_to_signal('StateChanged',
155
entry_group_state_changed)
156
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
157
service.name, service.type)
158
group.AddService(
159
self.interface, # interface
160
avahi.PROTO_INET6, # protocol
161
dbus.UInt32(0), # flags
162
self.name, self.type,
163
self.domain, self.host,
164
dbus.UInt16(self.port),
165
avahi.string_array_to_txt_array(self.TXT))
166
group.Commit()
167
168
# From the Avahi example code:
169
group = None # our entry group
170
# End of Avahi example code
171
172
173
def _datetime_to_dbus(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus type."""
175
return dbus.String(dt.isoformat(), variant_level=variant_level)
176
177
178
class Client(dbus.service.Object):
296
self.remove()
297
if self.group is None:
298
self.group = dbus.Interface(
299
self.bus.get_object(avahi.DBUS_NAME,
300
self.server.EntryGroupNew()),
301
avahi.DBUS_INTERFACE_ENTRY_GROUP)
302
self.entry_group_state_changed_match = (
303
self.group.connect_to_signal(
304
'StateChanged', self.entry_group_state_changed))
305
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
306
self.name, self.type)
307
self.group.AddService(
308
self.interface,
309
self.protocol,
310
dbus.UInt32(0), # flags
311
self.name, self.type,
312
self.domain, self.host,
313
dbus.UInt16(self.port),
314
avahi.string_array_to_txt_array(self.TXT))
315
self.group.Commit()
316
317
def entry_group_state_changed(self, state, error):
318
"""Derived from the Avahi example code"""
319
logger.debug("Avahi entry group state change: %i", state)
320
321
if state == avahi.ENTRY_GROUP_ESTABLISHED:
322
logger.debug("Zeroconf service established.")
323
elif state == avahi.ENTRY_GROUP_COLLISION:
324
logger.info("Zeroconf service name collision.")
325
self.rename()
326
elif state == avahi.ENTRY_GROUP_FAILURE:
327
logger.critical("Avahi: Error in group state changed %s",
328
unicode(error))
329
raise AvahiGroupError("State changed: {0!s}"
330
.format(error))
331
332
def cleanup(self):
333
"""Derived from the Avahi example code"""
334
if self.group is not None:
335
try:
336
self.group.Free()
337
except (dbus.exceptions.UnknownMethodException,
338
dbus.exceptions.DBusException):
339
pass
340
self.group = None
341
self.remove()
342
343
def server_state_changed(self, state, error=None):
344
"""Derived from the Avahi example code"""
345
logger.debug("Avahi server state change: %i", state)
346
bad_states = { avahi.SERVER_INVALID:
347
"Zeroconf server invalid",
348
avahi.SERVER_REGISTERING: None,
349
avahi.SERVER_COLLISION:
350
"Zeroconf server name collision",
351
avahi.SERVER_FAILURE:
352
"Zeroconf server failure" }
353
if state in bad_states:
354
if bad_states[state] is not None:
355
if error is None:
356
logger.error(bad_states[state])
357
else:
358
logger.error(bad_states[state] + ": %r", error)
359
self.cleanup()
360
elif state == avahi.SERVER_RUNNING:
361
self.add()
362
else:
363
if error is None:
364
logger.debug("Unknown state: %r", state)
365
else:
366
logger.debug("Unknown state: %r: %r", state, error)
367
368
def activate(self):
369
"""Derived from the Avahi example code"""
370
if self.server is None:
371
self.server = dbus.Interface(
372
self.bus.get_object(avahi.DBUS_NAME,
373
avahi.DBUS_PATH_SERVER,
374
follow_name_owner_changes=True),
375
avahi.DBUS_INTERFACE_SERVER)
376
self.server.connect_to_signal("StateChanged",
377
self.server_state_changed)
378
self.server_state_changed(self.server.GetState())
379
380
class AvahiServiceToSyslog(AvahiService):
381
def rename(self):
382
"""Add the new name to the syslog messages"""
383
ret = AvahiService.rename(self)
384
syslogger.setFormatter(logging.Formatter
385
('Mandos ({0}) [%(process)d]:'
386
' %(levelname)s: %(message)s'
387
.format(self.name)))
388
return ret
389
390
def timedelta_to_milliseconds(td):
391
"Convert a datetime.timedelta() to milliseconds"
392
return ((td.days * 24 * 60 * 60 * 1000)
393
+ (td.seconds * 1000)
394
+ (td.microseconds // 1000))
395
396
class Client(object):
179
397
"""A representation of a client host served by this server.
398
180
399
Attributes:
181
name: string; from the config file, used in log messages
400
approved: bool(); 'None' if not yet approved/disapproved
401
approval_delay: datetime.timedelta(); Time to wait for approval
402
approval_duration: datetime.timedelta(); Duration of one approval
403
checker: subprocess.Popen(); a running checker process used
404
to see if the client lives.
405
'None' if no process is running.
406
checker_callback_tag: a gobject event source tag, or None
407
checker_command: string; External command which is run to check
408
if client lives. %() expansions are done at
409
runtime with vars(self) as dict, so that for
410
instance %(name)s can be used in the command.
411
checker_initiator_tag: a gobject event source tag, or None
412
created: datetime.datetime(); (UTC) object creation
413
client_structure: Object describing what attributes a client has
414
and is used for storing the client at exit
415
current_checker_command: string; current running checker_command
416
disable_initiator_tag: a gobject event source tag, or None
417
enabled: bool()
182
418
fingerprint: string (40 or 32 hexadecimal digits); used to
183
419
uniquely identify the client
184
secret: bytestring; sent verbatim (over TLS) to client
185
420
host: string; available for use by the checker command
186
created: datetime.datetime(); (UTC) object creation
187
last_enabled: datetime.datetime(); (UTC)
188
enabled: bool()
421
interval: datetime.timedelta(); How often to start a new checker
422
last_approval_request: datetime.datetime(); (UTC) or None
189
423
last_checked_ok: datetime.datetime(); (UTC) or None
424
last_checker_status: integer between 0 and 255 reflecting exit
425
status of last checker. -1 reflects crashed
426
checker, -2 means no checker completed yet.
427
last_enabled: datetime.datetime(); (UTC) or None
428
name: string; from the config file, used in log messages and
429
D-Bus identifiers
430
secret: bytestring; sent verbatim (over TLS) to client
190
431
timeout: datetime.timedelta(); How long from last_checked_ok
191
until this client is invalid
192
interval: datetime.timedelta(); How often to start a new checker
193
disable_hook: If set, called by disable() as disable_hook(self)
194
checker: subprocess.Popen(); a running checker process used
195
to see if the client lives.
196
'None' if no process is running.
197
checker_initiator_tag: a gobject event source tag, or None
198
disable_initiator_tag: - '' -
199
checker_callback_tag: - '' -
200
checker_command: string; External command which is run to check if
201
client lives. %() expansions are done at
202
runtime with vars(self) as dict, so that for
203
instance %(name)s can be used in the command.
204
use_dbus: bool(); Whether to provide D-Bus interface and signals
205
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
432
until this client is disabled
433
extended_timeout: extra long timeout when secret has been sent
434
runtime_expansions: Allowed attributes for runtime expansion.
435
expires: datetime.datetime(); time (UTC) when a client will be
436
disabled, or None
206
437
"""
438
439
runtime_expansions = ("approval_delay", "approval_duration",
440
"created", "enabled", "fingerprint",
441
"host", "interval", "last_checked_ok",
442
"last_enabled", "name", "timeout")
443
client_defaults = { "timeout": "5m",
444
"extended_timeout": "15m",
445
"interval": "2m",
446
"checker": "fping -q -- %%(host)s",
447
"host": "",
448
"approval_delay": "0s",
449
"approval_duration": "1s",
450
"approved_by_default": "True",
451
"enabled": "True",
452
}
453
207
454
def timeout_milliseconds(self):
208
455
"Return the 'timeout' attribute in milliseconds"
209
return ((self.timeout.days * 24 * 60 * 60 * 1000)
210
+ (self.timeout.seconds * 1000)
211
+ (self.timeout.microseconds // 1000))
456
return timedelta_to_milliseconds(self.timeout)
457
458
def extended_timeout_milliseconds(self):
459
"Return the 'extended_timeout' attribute in milliseconds"
460
return timedelta_to_milliseconds(self.extended_timeout)
212
461
213
462
def interval_milliseconds(self):
214
463
"Return the 'interval' attribute in milliseconds"
215
return ((self.interval.days * 24 * 60 * 60 * 1000)
216
+ (self.interval.seconds * 1000)
217
+ (self.interval.microseconds // 1000))
218
219
def __init__(self, name = None, disable_hook=None, config=None,
220
use_dbus=True):
221
"""Note: the 'checker' key in 'config' sets the
222
'checker_command' attribute and *not* the 'checker'
223
attribute."""
464
return timedelta_to_milliseconds(self.interval)
465
466
def approval_delay_milliseconds(self):
467
return timedelta_to_milliseconds(self.approval_delay)
468
469
@staticmethod
470
def config_parser(config):
471
"""Construct a new dict of client settings of this form:
472
{ client_name: {setting_name: value, ...}, ...}
473
with exceptions for any special settings as defined above.
474
NOTE: Must be a pure function. Must return the same result
475
value given the same arguments.
476
"""
477
settings = {}
478
for client_name in config.sections():
479
section = dict(config.items(client_name))
480
client = settings[client_name] = {}
481
482
client["host"] = section["host"]
483
# Reformat values from string types to Python types
484
client["approved_by_default"] = config.getboolean(
485
client_name, "approved_by_default")
486
client["enabled"] = config.getboolean(client_name,
487
"enabled")
488
489
client["fingerprint"] = (section["fingerprint"].upper()
490
.replace(" ", ""))
491
if "secret" in section:
492
client["secret"] = section["secret"].decode("base64")
493
elif "secfile" in section:
494
with open(os.path.expanduser(os.path.expandvars
495
(section["secfile"])),
496
"rb") as secfile:
497
client["secret"] = secfile.read()
498
else:
499
raise TypeError("No secret or secfile for section {0}"
500
.format(section))
501
client["timeout"] = string_to_delta(section["timeout"])
502
client["extended_timeout"] = string_to_delta(
503
section["extended_timeout"])
504
client["interval"] = string_to_delta(section["interval"])
505
client["approval_delay"] = string_to_delta(
506
section["approval_delay"])
507
client["approval_duration"] = string_to_delta(
508
section["approval_duration"])
509
client["checker_command"] = section["checker"]
510
client["last_approval_request"] = None
511
client["last_checked_ok"] = None
512
client["last_checker_status"] = -2
513
514
return settings
515
516
def __init__(self, settings, name = None):
224
517
self.name = name
225
if config is None:
226
config = {}
227
logger.debug(u"Creating client %r", self.name)
228
self.use_dbus = use_dbus
229
if self.use_dbus:
230
self.dbus_object_path = (dbus.ObjectPath
231
("/Mandos/clients/"
232
+ self.name.replace(".", "_")))
233
dbus.service.Object.__init__(self, bus,
234
self.dbus_object_path)
518
# adding all client settings
519
for setting, value in settings.iteritems():
520
setattr(self, setting, value)
521
522
if self.enabled:
523
if not hasattr(self, "last_enabled"):
524
self.last_enabled = datetime.datetime.utcnow()
525
if not hasattr(self, "expires"):
526
self.expires = (datetime.datetime.utcnow()
527
+ self.timeout)
528
else:
529
self.last_enabled = None
530
self.expires = None
531
532
logger.debug("Creating client %r", self.name)
235
533
# Uppercase and remove spaces from fingerprint for later
236
534
# comparison purposes with return value from the fingerprint()
237
535
# function
238
self.fingerprint = (config["fingerprint"].upper()
239
.replace(u" ", u""))
240
logger.debug(u" Fingerprint: %s", self.fingerprint)
241
if "secret" in config:
242
self.secret = config["secret"].decode(u"base64")
243
elif "secfile" in config:
244
with closing(open(os.path.expanduser
245
(os.path.expandvars
246
(config["secfile"])))) as secfile:
247
self.secret = secfile.read()
248
else:
249
raise TypeError(u"No secret or secfile for client %s"
250
% self.name)
251
self.host = config.get("host", "")
252
self.created = datetime.datetime.utcnow()
253
self.enabled = False
254
self.last_enabled = None
255
self.last_checked_ok = None
256
self.timeout = string_to_delta(config["timeout"])
257
self.interval = string_to_delta(config["interval"])
258
self.disable_hook = disable_hook
536
logger.debug(" Fingerprint: %s", self.fingerprint)
537
self.created = settings.get("created",
538
datetime.datetime.utcnow())
539
540
# attributes specific for this server instance
259
541
self.checker = None
260
542
self.checker_initiator_tag = None
261
543
self.disable_initiator_tag = None
262
544
self.checker_callback_tag = None
263
self.checker_command = config["checker"]
545
self.current_checker_command = None
546
self.approved = None
547
self.approvals_pending = 0
548
self.changedstate = (multiprocessing_manager
549
.Condition(multiprocessing_manager
550
.Lock()))
551
self.client_structure = [attr for attr in
552
self.__dict__.iterkeys()
553
if not attr.startswith("_")]
554
self.client_structure.append("client_structure")
555
556
for name, t in inspect.getmembers(type(self),
557
lambda obj:
558
isinstance(obj,
559
property)):
560
if not name.startswith("_"):
561
self.client_structure.append(name)
562
563
# Send notice to process children that client state has changed
564
def send_changedstate(self):
565
with self.changedstate:
566
self.changedstate.notify_all()
264
567
265
568
def enable(self):
266
569
"""Start this client's checker and timeout hooks"""
570
if getattr(self, "enabled", False):
571
# Already enabled
572
return
573
self.send_changedstate()
574
self.expires = datetime.datetime.utcnow() + self.timeout
575
self.enabled = True
267
576
self.last_enabled = datetime.datetime.utcnow()
577
self.init_checker()
578
579
def disable(self, quiet=True):
580
"""Disable this client."""
581
if not getattr(self, "enabled", False):
582
return False
583
if not quiet:
584
self.send_changedstate()
585
if not quiet:
586
logger.info("Disabling client %s", self.name)
587
if getattr(self, "disable_initiator_tag", False):
588
gobject.source_remove(self.disable_initiator_tag)
589
self.disable_initiator_tag = None
590
self.expires = None
591
if getattr(self, "checker_initiator_tag", False):
592
gobject.source_remove(self.checker_initiator_tag)
593
self.checker_initiator_tag = None
594
self.stop_checker()
595
self.enabled = False
596
# Do not run this again if called by a gobject.timeout_add
597
return False
598
599
def __del__(self):
600
self.disable()
601
602
def init_checker(self):
268
603
# Schedule a new checker to be started an 'interval' from now,
269
604
# and every interval from then on.
270
605
self.checker_initiator_tag = (gobject.timeout_add
271
606
(self.interval_milliseconds(),
272
607
self.start_checker))
273
# Also start a new checker *right now*.
274
self.start_checker()
275
608
# Schedule a disable() when 'timeout' has passed
276
609
self.disable_initiator_tag = (gobject.timeout_add
277
610
(self.timeout_milliseconds(),
278
611
self.disable))
279
self.enabled = True
280
if self.use_dbus:
281
# Emit D-Bus signals
282
self.PropertyChanged(dbus.String(u"enabled"),
283
dbus.Boolean(True, variant_level=1))
284
self.PropertyChanged(dbus.String(u"last_enabled"),
285
(_datetime_to_dbus(self.last_enabled,
286
variant_level=1)))
287
288
def disable(self):
289
"""Disable this client."""
290
if not getattr(self, "enabled", False):
291
return False
292
logger.info(u"Disabling client %s", self.name)
293
if getattr(self, "disable_initiator_tag", False):
294
gobject.source_remove(self.disable_initiator_tag)
295
self.disable_initiator_tag = None
296
if getattr(self, "checker_initiator_tag", False):
297
gobject.source_remove(self.checker_initiator_tag)
298
self.checker_initiator_tag = None
299
self.stop_checker()
300
if self.disable_hook:
301
self.disable_hook(self)
302
self.enabled = False
303
if self.use_dbus:
304
# Emit D-Bus signal
305
self.PropertyChanged(dbus.String(u"enabled"),
306
dbus.Boolean(False, variant_level=1))
307
# Do not run this again if called by a gobject.timeout_add
308
return False
309
310
def __del__(self):
311
self.disable_hook = None
312
self.disable()
612
# Also start a new checker *right now*.
613
self.start_checker()
313
614
314
615
def checker_callback(self, pid, condition, command):
315
616
"""The checker has completed, so take appropriate actions."""
316
617
self.checker_callback_tag = None
317
618
self.checker = None
318
if self.use_dbus:
319
# Emit D-Bus signal
320
self.PropertyChanged(dbus.String(u"checker_running"),
321
dbus.Boolean(False, variant_level=1))
322
if (os.WIFEXITED(condition)
323
and (os.WEXITSTATUS(condition) == 0)):
324
logger.info(u"Checker for %(name)s succeeded",
325
vars(self))
326
if self.use_dbus:
327
# Emit D-Bus signal
328
self.CheckerCompleted(dbus.Boolean(True),
329
dbus.UInt16(condition),
330
dbus.String(command))
331
self.bump_timeout()
332
elif not os.WIFEXITED(condition):
333
logger.warning(u"Checker for %(name)s crashed?",
619
if os.WIFEXITED(condition):
620
self.last_checker_status = os.WEXITSTATUS(condition)
621
if self.last_checker_status == 0:
622
logger.info("Checker for %(name)s succeeded",
623
vars(self))
624
self.checked_ok()
625
else:
626
logger.info("Checker for %(name)s failed",
627
vars(self))
628
else:
629
self.last_checker_status = -1
630
logger.warning("Checker for %(name)s crashed?",
334
631
vars(self))
335
if self.use_dbus:
336
# Emit D-Bus signal
337
self.CheckerCompleted(dbus.Boolean(False),
338
dbus.UInt16(condition),
339
dbus.String(command))
340
else:
341
logger.info(u"Checker for %(name)s failed",
342
vars(self))
343
if self.use_dbus:
344
# Emit D-Bus signal
345
self.CheckerCompleted(dbus.Boolean(False),
346
dbus.UInt16(condition),
347
dbus.String(command))
348
632
349
def bump_timeout(self):
350
"""Bump up the timeout for this client.
351
This should only be called when the client has been seen,
352
alive and well.
353
"""
633
def checked_ok(self):
634
"""Assert that the client has been seen, alive and well."""
354
635
self.last_checked_ok = datetime.datetime.utcnow()
355
gobject.source_remove(self.disable_initiator_tag)
356
self.disable_initiator_tag = (gobject.timeout_add
357
(self.timeout_milliseconds(),
358
self.disable))
359
if self.use_dbus:
360
# Emit D-Bus signal
361
self.PropertyChanged(
362
dbus.String(u"last_checked_ok"),
363
(_datetime_to_dbus(self.last_checked_ok,
364
variant_level=1)))
636
self.last_checker_status = 0
637
self.bump_timeout()
638
639
def bump_timeout(self, timeout=None):
640
"""Bump up the timeout for this client."""
641
if timeout is None:
642
timeout = self.timeout
643
if self.disable_initiator_tag is not None:
644
gobject.source_remove(self.disable_initiator_tag)
645
if getattr(self, "enabled", False):
646
self.disable_initiator_tag = (gobject.timeout_add
647
(timedelta_to_milliseconds
648
(timeout), self.disable))
649
self.expires = datetime.datetime.utcnow() + timeout
650
651
def need_approval(self):
652
self.last_approval_request = datetime.datetime.utcnow()
365
653
366
654
def start_checker(self):
367
655
"""Start a new checker subprocess if one is not running.
656
368
657
If a checker already exists, leave it running and do
369
658
nothing."""
370
659
# The reason for not killing a running checker is that if we
371
# did that, then if a checker (for some reason) started
372
# running slowly and taking more than 'interval' time, the
373
# client would inevitably timeout, since no checker would get
374
# a chance to run to completion. If we instead leave running
660
# did that, and if a checker (for some reason) started running
661
# slowly and taking more than 'interval' time, then the client
662
# would inevitably timeout, since no checker would get a
663
# chance to run to completion. If we instead leave running
375
664
# checkers alone, the checker would have to take more time
376
# than 'timeout' for the client to be declared invalid, which
377
# is as it should be.
665
# than 'timeout' for the client to be disabled, which is as it
666
# should be.
667
668
# If a checker exists, make sure it is not a zombie
669
try:
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
except (AttributeError, OSError) as error:
672
if (isinstance(error, OSError)
673
and error.errno != errno.ECHILD):
674
raise error
675
else:
676
if pid:
677
logger.warning("Checker was a zombie")
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status,
680
self.current_checker_command)
681
# Start a new checker if needed
378
682
if self.checker is None:
379
683
try:
380
684
# In case checker_command has exactly one % operator
381
685
command = self.checker_command % self.host
382
686
except TypeError:
383
687
# Escape attributes for the shell
384
escaped_attrs = dict((key, re.escape(str(val)))
385
for key, val in
386
vars(self).iteritems())
688
escaped_attrs = dict(
689
(attr,
690
re.escape(unicode(str(getattr(self, attr, "")),
691
errors=
692
'replace')))
693
for attr in
694
self.runtime_expansions)
695
387
696
try:
388
697
command = self.checker_command % escaped_attrs
389
except TypeError, error:
390
logger.error(u'Could not format string "%s":'
391
u' %s', self.checker_command, error)
698
except TypeError as error:
699
logger.error('Could not format string "%s"',
700
self.checker_command, exc_info=error)
392
701
return True # Try again later
702
self.current_checker_command = command
393
703
try:
394
logger.info(u"Starting checker %r for %s",
704
logger.info("Starting checker %r for %s",
395
705
command, self.name)
396
706
# We don't need to redirect stdout and stderr, since
397
707
# in normal mode, that is already done by daemon(),
400
710
self.checker = subprocess.Popen(command,
401
711
close_fds=True,
402
712
shell=True, cwd="/")
403
if self.use_dbus:
404
# Emit D-Bus signal
405
self.CheckerStarted(command)
406
self.PropertyChanged(
407
dbus.String("checker_running"),
408
dbus.Boolean(True, variant_level=1))
409
713
self.checker_callback_tag = (gobject.child_watch_add
410
714
(self.checker.pid,
411
715
self.checker_callback,
412
716
data=command))
413
except OSError, error:
414
logger.error(u"Failed to start subprocess: %s",
415
error)
717
# The checker may have completed before the gobject
718
# watch was added. Check for this.
719
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
720
if pid:
721
gobject.source_remove(self.checker_callback_tag)
722
self.checker_callback(pid, status, command)
723
except OSError as error:
724
logger.error("Failed to start subprocess",
725
exc_info=error)
416
726
# Re-run this periodically if run by gobject.timeout_add
417
727
return True
418
728
423
733
self.checker_callback_tag = None
424
734
if getattr(self, "checker", None) is None:
425
735
return
426
logger.debug(u"Stopping checker for %(name)s", vars(self))
736
logger.debug("Stopping checker for %(name)s", vars(self))
427
737
try:
428
os.kill(self.checker.pid, signal.SIGTERM)
429
#os.sleep(0.5)
738
self.checker.terminate()
739
#time.sleep(0.5)
430
740
#if self.checker.poll() is None:
431
# os.kill(self.checker.pid, signal.SIGKILL)
432
except OSError, error:
741
# self.checker.kill()
742
except OSError as error:
433
743
if error.errno != errno.ESRCH: # No such process
434
744
raise
435
745
self.checker = None
436
if self.use_dbus:
437
self.PropertyChanged(dbus.String(u"checker_running"),
438
dbus.Boolean(False, variant_level=1))
439
440
def still_valid(self):
441
"""Has the timeout not yet passed for this client?"""
442
if not getattr(self, "enabled", False):
443
return False
444
now = datetime.datetime.utcnow()
445
if self.last_checked_ok is None:
446
return now < (self.created + self.timeout)
447
else:
448
return now < (self.last_checked_ok + self.timeout)
449
450
## D-Bus methods & signals
451
_interface = u"org.mandos_system.Mandos.Client"
452
453
# BumpTimeout - method
454
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
455
BumpTimeout.__name__ = "BumpTimeout"
746
747
748
def dbus_service_property(dbus_interface, signature="v",
749
access="readwrite", byte_arrays=False):
750
"""Decorators for marking methods of a DBusObjectWithProperties to
751
become properties on the D-Bus.
752
753
The decorated method will be called with no arguments by "Get"
754
and with one argument by "Set".
755
756
The parameters, where they are supported, are the same as
757
dbus.service.method, except there is only "signature", since the
758
type from Get() and the type sent to Set() is the same.
759
"""
760
# Encoding deeply encoded byte arrays is not supported yet by the
761
# "Set" method, so we fail early here:
762
if byte_arrays and signature != "ay":
763
raise ValueError("Byte arrays not supported for non-'ay'"
764
" signature {0!r}".format(signature))
765
def decorator(func):
766
func._dbus_is_property = True
767
func._dbus_interface = dbus_interface
768
func._dbus_signature = signature
769
func._dbus_access = access
770
func._dbus_name = func.__name__
771
if func._dbus_name.endswith("_dbus_property"):
772
func._dbus_name = func._dbus_name[:-14]
773
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
774
return func
775
return decorator
776
777
778
def dbus_interface_annotations(dbus_interface):
779
"""Decorator for marking functions returning interface annotations
780
781
Usage:
782
783
@dbus_interface_annotations("org.example.Interface")
784
def _foo(self): # Function name does not matter
785
return {"org.freedesktop.DBus.Deprecated": "true",
786
"org.freedesktop.DBus.Property.EmitsChangedSignal":
787
"false"}
788
"""
789
def decorator(func):
790
func._dbus_is_interface = True
791
func._dbus_interface = dbus_interface
792
func._dbus_name = dbus_interface
793
return func
794
return decorator
795
796
797
def dbus_annotations(annotations):
798
"""Decorator to annotate D-Bus methods, signals or properties
799
Usage:
800
801
@dbus_service_property("org.example.Interface", signature="b",
802
access="r")
803
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
804
"org.freedesktop.DBus.Property."
805
"EmitsChangedSignal": "false"})
806
def Property_dbus_property(self):
807
return dbus.Boolean(False)
808
"""
809
def decorator(func):
810
func._dbus_annotations = annotations
811
return func
812
return decorator
813
814
815
class DBusPropertyException(dbus.exceptions.DBusException):
816
"""A base class for D-Bus property-related exceptions
817
"""
818
def __unicode__(self):
819
return unicode(str(self))
820
821
822
class DBusPropertyAccessException(DBusPropertyException):
823
"""A property's access permissions disallows an operation.
824
"""
825
pass
826
827
828
class DBusPropertyNotFound(DBusPropertyException):
829
"""An attempt was made to access a non-existing property.
830
"""
831
pass
832
833
834
class DBusObjectWithProperties(dbus.service.Object):
835
"""A D-Bus object with properties.
836
837
Classes inheriting from this can use the dbus_service_property
838
decorator to expose methods as D-Bus properties. It exposes the
839
standard Get(), Set(), and GetAll() methods on the D-Bus.
840
"""
841
842
@staticmethod
843
def _is_dbus_thing(thing):
844
"""Returns a function testing if an attribute is a D-Bus thing
845
846
If called like _is_dbus_thing("method") it returns a function
847
suitable for use as predicate to inspect.getmembers().
848
"""
849
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
850
False)
851
852
def _get_all_dbus_things(self, thing):
853
"""Returns a generator of (name, attribute) pairs
854
"""
855
return ((getattr(athing.__get__(self), "_dbus_name",
856
name),
857
athing.__get__(self))
858
for cls in self.__class__.__mro__
859
for name, athing in
860
inspect.getmembers(cls,
861
self._is_dbus_thing(thing)))
862
863
def _get_dbus_property(self, interface_name, property_name):
864
"""Returns a bound method if one exists which is a D-Bus
865
property with the specified name and interface.
866
"""
867
for cls in self.__class__.__mro__:
868
for name, value in (inspect.getmembers
869
(cls,
870
self._is_dbus_thing("property"))):
871
if (value._dbus_name == property_name
872
and value._dbus_interface == interface_name):
873
return value.__get__(self)
874
875
# No such property
876
raise DBusPropertyNotFound(self.dbus_object_path + ":"
877
+ interface_name + "."
878
+ property_name)
879
880
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
881
out_signature="v")
882
def Get(self, interface_name, property_name):
883
"""Standard D-Bus property Get() method, see D-Bus standard.
884
"""
885
prop = self._get_dbus_property(interface_name, property_name)
886
if prop._dbus_access == "write":
887
raise DBusPropertyAccessException(property_name)
888
value = prop()
889
if not hasattr(value, "variant_level"):
890
return value
891
return type(value)(value, variant_level=value.variant_level+1)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
894
def Set(self, interface_name, property_name, value):
895
"""Standard D-Bus property Set() method, see D-Bus standard.
896
"""
897
prop = self._get_dbus_property(interface_name, property_name)
898
if prop._dbus_access == "read":
899
raise DBusPropertyAccessException(property_name)
900
if prop._dbus_get_args_options["byte_arrays"]:
901
# The byte_arrays option is not supported yet on
902
# signatures other than "ay".
903
if prop._dbus_signature != "ay":
904
raise ValueError
905
value = dbus.ByteArray(b''.join(chr(byte)
906
for byte in value))
907
prop(value)
908
909
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
910
out_signature="a{sv}")
911
def GetAll(self, interface_name):
912
"""Standard D-Bus property GetAll() method, see D-Bus
913
standard.
914
915
Note: Will not include properties with access="write".
916
"""
917
properties = {}
918
for name, prop in self._get_all_dbus_things("property"):
919
if (interface_name
920
and interface_name != prop._dbus_interface):
921
# Interface non-empty but did not match
922
continue
923
# Ignore write-only properties
924
if prop._dbus_access == "write":
925
continue
926
value = prop()
927
if not hasattr(value, "variant_level"):
928
properties[name] = value
929
continue
930
properties[name] = type(value)(value, variant_level=
931
value.variant_level+1)
932
return dbus.Dictionary(properties, signature="sv")
933
934
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
935
out_signature="s",
936
path_keyword='object_path',
937
connection_keyword='connection')
938
def Introspect(self, object_path, connection):
939
"""Overloading of standard D-Bus method.
940
941
Inserts property tags and interface annotation tags.
942
"""
943
xmlstring = dbus.service.Object.Introspect(self, object_path,
944
connection)
945
try:
946
document = xml.dom.minidom.parseString(xmlstring)
947
def make_tag(document, name, prop):
948
e = document.createElement("property")
949
e.setAttribute("name", name)
950
e.setAttribute("type", prop._dbus_signature)
951
e.setAttribute("access", prop._dbus_access)
952
return e
953
for if_tag in document.getElementsByTagName("interface"):
954
# Add property tags
955
for tag in (make_tag(document, name, prop)
956
for name, prop
957
in self._get_all_dbus_things("property")
958
if prop._dbus_interface
959
== if_tag.getAttribute("name")):
960
if_tag.appendChild(tag)
961
# Add annotation tags
962
for typ in ("method", "signal", "property"):
963
for tag in if_tag.getElementsByTagName(typ):
964
annots = dict()
965
for name, prop in (self.
966
_get_all_dbus_things(typ)):
967
if (name == tag.getAttribute("name")
968
and prop._dbus_interface
969
== if_tag.getAttribute("name")):
970
annots.update(getattr
971
(prop,
972
"_dbus_annotations",
973
{}))
974
for name, value in annots.iteritems():
975
ann_tag = document.createElement(
976
"annotation")
977
ann_tag.setAttribute("name", name)
978
ann_tag.setAttribute("value", value)
979
tag.appendChild(ann_tag)
980
# Add interface annotation tags
981
for annotation, value in dict(
982
itertools.chain.from_iterable(
983
annotations().iteritems()
984
for name, annotations in
985
self._get_all_dbus_things("interface")
986
if name == if_tag.getAttribute("name")
987
)).iteritems():
988
ann_tag = document.createElement("annotation")
989
ann_tag.setAttribute("name", annotation)
990
ann_tag.setAttribute("value", value)
991
if_tag.appendChild(ann_tag)
992
# Add the names to the return values for the
993
# "org.freedesktop.DBus.Properties" methods
994
if (if_tag.getAttribute("name")
995
== "org.freedesktop.DBus.Properties"):
996
for cn in if_tag.getElementsByTagName("method"):
997
if cn.getAttribute("name") == "Get":
998
for arg in cn.getElementsByTagName("arg"):
999
if (arg.getAttribute("direction")
1000
== "out"):
1001
arg.setAttribute("name", "value")
1002
elif cn.getAttribute("name") == "GetAll":
1003
for arg in cn.getElementsByTagName("arg"):
1004
if (arg.getAttribute("direction")
1005
== "out"):
1006
arg.setAttribute("name", "props")
1007
xmlstring = document.toxml("utf-8")
1008
document.unlink()
1009
except (AttributeError, xml.dom.DOMException,
1010
xml.parsers.expat.ExpatError) as error:
1011
logger.error("Failed to override Introspection method",
1012
exc_info=error)
1013
return xmlstring
1014
1015
1016
def datetime_to_dbus (dt, variant_level=0):
1017
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1018
if dt is None:
1019
return dbus.String("", variant_level = variant_level)
1020
return dbus.String(dt.isoformat(),
1021
variant_level=variant_level)
1022
1023
1024
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1025
"""A class decorator; applied to a subclass of
1026
dbus.service.Object, it will add alternate D-Bus attributes with
1027
interface names according to the "alt_interface_names" mapping.
1028
Usage:
1029
1030
@alternate_dbus_names({"org.example.Interface":
1031
"net.example.AlternateInterface"})
1032
class SampleDBusObject(dbus.service.Object):
1033
@dbus.service.method("org.example.Interface")
1034
def SampleDBusMethod():
1035
pass
1036
1037
The above "SampleDBusMethod" on "SampleDBusObject" will be
1038
reachable via two interfaces: "org.example.Interface" and
1039
"net.example.AlternateInterface", the latter of which will have
1040
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1041
"true", unless "deprecate" is passed with a False value.
1042
1043
This works for methods and signals, and also for D-Bus properties
1044
(from DBusObjectWithProperties) and interfaces (from the
1045
dbus_interface_annotations decorator).
1046
"""
1047
def wrapper(cls):
1048
for orig_interface_name, alt_interface_name in (
1049
alt_interface_names.iteritems()):
1050
attr = {}
1051
interface_names = set()
1052
# Go though all attributes of the class
1053
for attrname, attribute in inspect.getmembers(cls):
1054
# Ignore non-D-Bus attributes, and D-Bus attributes
1055
# with the wrong interface name
1056
if (not hasattr(attribute, "_dbus_interface")
1057
or not attribute._dbus_interface
1058
.startswith(orig_interface_name)):
1059
continue
1060
# Create an alternate D-Bus interface name based on
1061
# the current name
1062
alt_interface = (attribute._dbus_interface
1063
.replace(orig_interface_name,
1064
alt_interface_name))
1065
interface_names.add(alt_interface)
1066
# Is this a D-Bus signal?
1067
if getattr(attribute, "_dbus_is_signal", False):
1068
# Extract the original non-method function by
1069
# black magic
1070
nonmethod_func = (dict(
1071
zip(attribute.func_code.co_freevars,
1072
attribute.__closure__))["func"]
1073
.cell_contents)
1074
# Create a new, but exactly alike, function
1075
# object, and decorate it to be a new D-Bus signal
1076
# with the alternate D-Bus interface name
1077
new_function = (dbus.service.signal
1078
(alt_interface,
1079
attribute._dbus_signature)
1080
(types.FunctionType(
1081
nonmethod_func.func_code,
1082
nonmethod_func.func_globals,
1083
nonmethod_func.func_name,
1084
nonmethod_func.func_defaults,
1085
nonmethod_func.func_closure)))
1086
# Copy annotations, if any
1087
try:
1088
new_function._dbus_annotations = (
1089
dict(attribute._dbus_annotations))
1090
except AttributeError:
1091
pass
1092
# Define a creator of a function to call both the
1093
# original and alternate functions, so both the
1094
# original and alternate signals gets sent when
1095
# the function is called
1096
def fixscope(func1, func2):
1097
"""This function is a scope container to pass
1098
func1 and func2 to the "call_both" function
1099
outside of its arguments"""
1100
def call_both(*args, **kwargs):
1101
"""This function will emit two D-Bus
1102
signals by calling func1 and func2"""
1103
func1(*args, **kwargs)
1104
func2(*args, **kwargs)
1105
return call_both
1106
# Create the "call_both" function and add it to
1107
# the class
1108
attr[attrname] = fixscope(attribute, new_function)
1109
# Is this a D-Bus method?
1110
elif getattr(attribute, "_dbus_is_method", False):
1111
# Create a new, but exactly alike, function
1112
# object. Decorate it to be a new D-Bus method
1113
# with the alternate D-Bus interface name. Add it
1114
# to the class.
1115
attr[attrname] = (dbus.service.method
1116
(alt_interface,
1117
attribute._dbus_in_signature,
1118
attribute._dbus_out_signature)
1119
(types.FunctionType
1120
(attribute.func_code,
1121
attribute.func_globals,
1122
attribute.func_name,
1123
attribute.func_defaults,
1124
attribute.func_closure)))
1125
# Copy annotations, if any
1126
try:
1127
attr[attrname]._dbus_annotations = (
1128
dict(attribute._dbus_annotations))
1129
except AttributeError:
1130
pass
1131
# Is this a D-Bus property?
1132
elif getattr(attribute, "_dbus_is_property", False):
1133
# Create a new, but exactly alike, function
1134
# object, and decorate it to be a new D-Bus
1135
# property with the alternate D-Bus interface
1136
# name. Add it to the class.
1137
attr[attrname] = (dbus_service_property
1138
(alt_interface,
1139
attribute._dbus_signature,
1140
attribute._dbus_access,
1141
attribute
1142
._dbus_get_args_options
1143
["byte_arrays"])
1144
(types.FunctionType
1145
(attribute.func_code,
1146
attribute.func_globals,
1147
attribute.func_name,
1148
attribute.func_defaults,
1149
attribute.func_closure)))
1150
# Copy annotations, if any
1151
try:
1152
attr[attrname]._dbus_annotations = (
1153
dict(attribute._dbus_annotations))
1154
except AttributeError:
1155
pass
1156
# Is this a D-Bus interface?
1157
elif getattr(attribute, "_dbus_is_interface", False):
1158
# Create a new, but exactly alike, function
1159
# object. Decorate it to be a new D-Bus interface
1160
# with the alternate D-Bus interface name. Add it
1161
# to the class.
1162
attr[attrname] = (dbus_interface_annotations
1163
(alt_interface)
1164
(types.FunctionType
1165
(attribute.func_code,
1166
attribute.func_globals,
1167
attribute.func_name,
1168
attribute.func_defaults,
1169
attribute.func_closure)))
1170
if deprecate:
1171
# Deprecate all alternate interfaces
1172
iname="_AlternateDBusNames_interface_annotation{0}"
1173
for interface_name in interface_names:
1174
@dbus_interface_annotations(interface_name)
1175
def func(self):
1176
return { "org.freedesktop.DBus.Deprecated":
1177
"true" }
1178
# Find an unused name
1179
for aname in (iname.format(i)
1180
for i in itertools.count()):
1181
if aname not in attr:
1182
attr[aname] = func
1183
break
1184
if interface_names:
1185
# Replace the class with a new subclass of it with
1186
# methods, signals, etc. as created above.
1187
cls = type(b"{0}Alternate".format(cls.__name__),
1188
(cls,), attr)
1189
return cls
1190
return wrapper
1191
1192
1193
@alternate_dbus_interfaces({"se.recompile.Mandos":
1194
"se.bsnet.fukt.Mandos"})
1195
class ClientDBus(Client, DBusObjectWithProperties):
1196
"""A Client class using D-Bus
1197
1198
Attributes:
1199
dbus_object_path: dbus.ObjectPath
1200
bus: dbus.SystemBus()
1201
"""
1202
1203
runtime_expansions = (Client.runtime_expansions
1204
+ ("dbus_object_path",))
1205
1206
# dbus.service.Object doesn't use super(), so we can't either.
1207
1208
def __init__(self, bus = None, *args, **kwargs):
1209
self.bus = bus
1210
Client.__init__(self, *args, **kwargs)
1211
# Only now, when this client is initialized, can it show up on
1212
# the D-Bus
1213
client_object_name = unicode(self.name).translate(
1214
{ord("."): ord("_"),
1215
ord("-"): ord("_")})
1216
self.dbus_object_path = (dbus.ObjectPath
1217
("/clients/" + client_object_name))
1218
DBusObjectWithProperties.__init__(self, self.bus,
1219
self.dbus_object_path)
1220
1221
def notifychangeproperty(transform_func,
1222
dbus_name, type_func=lambda x: x,
1223
variant_level=1):
1224
""" Modify a variable so that it's a property which announces
1225
its changes to DBus.
1226
1227
transform_fun: Function that takes a value and a variant_level
1228
and transforms it to a D-Bus type.
1229
dbus_name: D-Bus name of the variable
1230
type_func: Function that transform the value before sending it
1231
to the D-Bus. Default: no transform
1232
variant_level: D-Bus variant level. Default: 1
1233
"""
1234
attrname = "_{0}".format(dbus_name)
1235
def setter(self, value):
1236
if hasattr(self, "dbus_object_path"):
1237
if (not hasattr(self, attrname) or
1238
type_func(getattr(self, attrname, None))
1239
!= type_func(value)):
1240
dbus_value = transform_func(type_func(value),
1241
variant_level
1242
=variant_level)
1243
self.PropertyChanged(dbus.String(dbus_name),
1244
dbus_value)
1245
setattr(self, attrname, value)
1246
1247
return property(lambda self: getattr(self, attrname), setter)
1248
1249
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1250
approvals_pending = notifychangeproperty(dbus.Boolean,
1251
"ApprovalPending",
1252
type_func = bool)
1253
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1254
last_enabled = notifychangeproperty(datetime_to_dbus,
1255
"LastEnabled")
1256
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1257
type_func = lambda checker:
1258
checker is not None)
1259
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1260
"LastCheckedOK")
1261
last_checker_status = notifychangeproperty(dbus.Int16,
1262
"LastCheckerStatus")
1263
last_approval_request = notifychangeproperty(
1264
datetime_to_dbus, "LastApprovalRequest")
1265
approved_by_default = notifychangeproperty(dbus.Boolean,
1266
"ApprovedByDefault")
1267
approval_delay = notifychangeproperty(dbus.UInt64,
1268
"ApprovalDelay",
1269
type_func =
1270
timedelta_to_milliseconds)
1271
approval_duration = notifychangeproperty(
1272
dbus.UInt64, "ApprovalDuration",
1273
type_func = timedelta_to_milliseconds)
1274
host = notifychangeproperty(dbus.String, "Host")
1275
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1276
type_func =
1277
timedelta_to_milliseconds)
1278
extended_timeout = notifychangeproperty(
1279
dbus.UInt64, "ExtendedTimeout",
1280
type_func = timedelta_to_milliseconds)
1281
interval = notifychangeproperty(dbus.UInt64,
1282
"Interval",
1283
type_func =
1284
timedelta_to_milliseconds)
1285
checker_command = notifychangeproperty(dbus.String, "Checker")
1286
1287
del notifychangeproperty
1288
1289
def __del__(self, *args, **kwargs):
1290
try:
1291
self.remove_from_connection()
1292
except LookupError:
1293
pass
1294
if hasattr(DBusObjectWithProperties, "__del__"):
1295
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1296
Client.__del__(self, *args, **kwargs)
1297
1298
def checker_callback(self, pid, condition, command,
1299
*args, **kwargs):
1300
self.checker_callback_tag = None
1301
self.checker = None
1302
if os.WIFEXITED(condition):
1303
exitstatus = os.WEXITSTATUS(condition)
1304
# Emit D-Bus signal
1305
self.CheckerCompleted(dbus.Int16(exitstatus),
1306
dbus.Int64(condition),
1307
dbus.String(command))
1308
else:
1309
# Emit D-Bus signal
1310
self.CheckerCompleted(dbus.Int16(-1),
1311
dbus.Int64(condition),
1312
dbus.String(command))
1313
1314
return Client.checker_callback(self, pid, condition, command,
1315
*args, **kwargs)
1316
1317
def start_checker(self, *args, **kwargs):
1318
old_checker = self.checker
1319
if self.checker is not None:
1320
old_checker_pid = self.checker.pid
1321
else:
1322
old_checker_pid = None
1323
r = Client.start_checker(self, *args, **kwargs)
1324
# Only if new checker process was started
1325
if (self.checker is not None
1326
and old_checker_pid != self.checker.pid):
1327
# Emit D-Bus signal
1328
self.CheckerStarted(self.current_checker_command)
1329
return r
1330
1331
def _reset_approved(self):
1332
self.approved = None
1333
return False
1334
1335
def approve(self, value=True):
1336
self.send_changedstate()
1337
self.approved = value
1338
gobject.timeout_add(timedelta_to_milliseconds
1339
(self.approval_duration),
1340
self._reset_approved)
1341
1342
## D-Bus methods, signals & properties
1343
_interface = "se.recompile.Mandos.Client"
1344
1345
## Interfaces
1346
1347
@dbus_interface_annotations(_interface)
1348
def _foo(self):
1349
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1350
"false"}
1351
1352
## Signals
456
1353
457
1354
# CheckerCompleted - signal
458
@dbus.service.signal(_interface, signature="bqs")
459
def CheckerCompleted(self, success, condition, command):
1355
@dbus.service.signal(_interface, signature="nxs")
1356
def CheckerCompleted(self, exitcode, waitstatus, command):
460
1357
"D-Bus signal"
461
1358
pass
462
1359
466
1363
"D-Bus signal"
467
1364
pass
468
1365
469
# GetAllProperties - method
470
@dbus.service.method(_interface, out_signature="a{sv}")
471
def GetAllProperties(self):
472
"D-Bus method"
473
return dbus.Dictionary({
474
dbus.String("name"):
475
dbus.String(self.name, variant_level=1),
476
dbus.String("fingerprint"):
477
dbus.String(self.fingerprint, variant_level=1),
478
dbus.String("host"):
479
dbus.String(self.host, variant_level=1),
480
dbus.String("created"):
481
_datetime_to_dbus(self.created, variant_level=1),
482
dbus.String("last_enabled"):
483
(_datetime_to_dbus(self.last_enabled,
484
variant_level=1)
485
if self.last_enabled is not None
486
else dbus.Boolean(False, variant_level=1)),
487
dbus.String("enabled"):
488
dbus.Boolean(self.enabled, variant_level=1),
489
dbus.String("last_checked_ok"):
490
(_datetime_to_dbus(self.last_checked_ok,
491
variant_level=1)
492
if self.last_checked_ok is not None
493
else dbus.Boolean (False, variant_level=1)),
494
dbus.String("timeout"):
495
dbus.UInt64(self.timeout_milliseconds(),
496
variant_level=1),
497
dbus.String("interval"):
498
dbus.UInt64(self.interval_milliseconds(),
499
variant_level=1),
500
dbus.String("checker"):
501
dbus.String(self.checker_command,
502
variant_level=1),
503
dbus.String("checker_running"):
504
dbus.Boolean(self.checker is not None,
505
variant_level=1),
506
}, signature="sv")
507
508
# IsStillValid - method
509
IsStillValid = (dbus.service.method(_interface, out_signature="b")
510
(still_valid))
511
IsStillValid.__name__ = "IsStillValid"
512
513
1366
# PropertyChanged - signal
514
1367
@dbus.service.signal(_interface, signature="sv")
515
1368
def PropertyChanged(self, property, value):
516
1369
"D-Bus signal"
517
1370
pass
518
1371
519
# SetChecker - method
520
@dbus.service.method(_interface, in_signature="s")
521
def SetChecker(self, checker):
522
"D-Bus setter method"
523
self.checker_command = checker
524
# Emit D-Bus signal
525
self.PropertyChanged(dbus.String(u"checker"),
526
dbus.String(self.checker_command,
527
variant_level=1))
528
529
# SetHost - method
530
@dbus.service.method(_interface, in_signature="s")
531
def SetHost(self, host):
532
"D-Bus setter method"
533
self.host = host
534
# Emit D-Bus signal
535
self.PropertyChanged(dbus.String(u"host"),
536
dbus.String(self.host, variant_level=1))
537
538
# SetInterval - method
539
@dbus.service.method(_interface, in_signature="t")
540
def SetInterval(self, milliseconds):
541
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
542
# Emit D-Bus signal
543
self.PropertyChanged(dbus.String(u"interval"),
544
(dbus.UInt64(self.interval_milliseconds(),
545
variant_level=1)))
546
547
# SetSecret - method
548
@dbus.service.method(_interface, in_signature="ay",
549
byte_arrays=True)
550
def SetSecret(self, secret):
551
"D-Bus setter method"
552
self.secret = str(secret)
553
554
# SetTimeout - method
555
@dbus.service.method(_interface, in_signature="t")
556
def SetTimeout(self, milliseconds):
557
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
558
# Emit D-Bus signal
559
self.PropertyChanged(dbus.String(u"timeout"),
560
(dbus.UInt64(self.timeout_milliseconds(),
561
variant_level=1)))
1372
# GotSecret - signal
1373
@dbus.service.signal(_interface)
1374
def GotSecret(self):
1375
"""D-Bus signal
1376
Is sent after a successful transfer of secret from the Mandos
1377
server to mandos-client
1378
"""
1379
pass
1380
1381
# Rejected - signal
1382
@dbus.service.signal(_interface, signature="s")
1383
def Rejected(self, reason):
1384
"D-Bus signal"
1385
pass
1386
1387
# NeedApproval - signal
1388
@dbus.service.signal(_interface, signature="tb")
1389
def NeedApproval(self, timeout, default):
1390
"D-Bus signal"
1391
return self.need_approval()
1392
1393
## Methods
1394
1395
# Approve - method
1396
@dbus.service.method(_interface, in_signature="b")
1397
def Approve(self, value):
1398
self.approve(value)
1399
1400
# CheckedOK - method
1401
@dbus.service.method(_interface)
1402
def CheckedOK(self):
1403
self.checked_ok()
562
1404
563
1405
# Enable - method
564
Enable = dbus.service.method(_interface)(enable)
565
Enable.__name__ = "Enable"
1406
@dbus.service.method(_interface)
1407
def Enable(self):
1408
"D-Bus method"
1409
self.enable()
566
1410
567
1411
# StartChecker - method
568
1412
@dbus.service.method(_interface)
577
1421
self.disable()
578
1422
579
1423
# StopChecker - method
580
StopChecker = dbus.service.method(_interface)(stop_checker)
581
StopChecker.__name__ = "StopChecker"
1424
@dbus.service.method(_interface)
1425
def StopChecker(self):
1426
self.stop_checker()
1427
1428
## Properties
1429
1430
# ApprovalPending - property
1431
@dbus_service_property(_interface, signature="b", access="read")
1432
def ApprovalPending_dbus_property(self):
1433
return dbus.Boolean(bool(self.approvals_pending))
1434
1435
# ApprovedByDefault - property
1436
@dbus_service_property(_interface, signature="b",
1437
access="readwrite")
1438
def ApprovedByDefault_dbus_property(self, value=None):
1439
if value is None: # get
1440
return dbus.Boolean(self.approved_by_default)
1441
self.approved_by_default = bool(value)
1442
1443
# ApprovalDelay - property
1444
@dbus_service_property(_interface, signature="t",
1445
access="readwrite")
1446
def ApprovalDelay_dbus_property(self, value=None):
1447
if value is None: # get
1448
return dbus.UInt64(self.approval_delay_milliseconds())
1449
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1450
1451
# ApprovalDuration - property
1452
@dbus_service_property(_interface, signature="t",
1453
access="readwrite")
1454
def ApprovalDuration_dbus_property(self, value=None):
1455
if value is None: # get
1456
return dbus.UInt64(timedelta_to_milliseconds(
1457
self.approval_duration))
1458
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1459
1460
# Name - property
1461
@dbus_service_property(_interface, signature="s", access="read")
1462
def Name_dbus_property(self):
1463
return dbus.String(self.name)
1464
1465
# Fingerprint - property
1466
@dbus_service_property(_interface, signature="s", access="read")
1467
def Fingerprint_dbus_property(self):
1468
return dbus.String(self.fingerprint)
1469
1470
# Host - property
1471
@dbus_service_property(_interface, signature="s",
1472
access="readwrite")
1473
def Host_dbus_property(self, value=None):
1474
if value is None: # get
1475
return dbus.String(self.host)
1476
self.host = unicode(value)
1477
1478
# Created - property
1479
@dbus_service_property(_interface, signature="s", access="read")
1480
def Created_dbus_property(self):
1481
return datetime_to_dbus(self.created)
1482
1483
# LastEnabled - property
1484
@dbus_service_property(_interface, signature="s", access="read")
1485
def LastEnabled_dbus_property(self):
1486
return datetime_to_dbus(self.last_enabled)
1487
1488
# Enabled - property
1489
@dbus_service_property(_interface, signature="b",
1490
access="readwrite")
1491
def Enabled_dbus_property(self, value=None):
1492
if value is None: # get
1493
return dbus.Boolean(self.enabled)
1494
if value:
1495
self.enable()
1496
else:
1497
self.disable()
1498
1499
# LastCheckedOK - property
1500
@dbus_service_property(_interface, signature="s",
1501
access="readwrite")
1502
def LastCheckedOK_dbus_property(self, value=None):
1503
if value is not None:
1504
self.checked_ok()
1505
return
1506
return datetime_to_dbus(self.last_checked_ok)
1507
1508
# LastCheckerStatus - property
1509
@dbus_service_property(_interface, signature="n",
1510
access="read")
1511
def LastCheckerStatus_dbus_property(self):
1512
return dbus.Int16(self.last_checker_status)
1513
1514
# Expires - property
1515
@dbus_service_property(_interface, signature="s", access="read")
1516
def Expires_dbus_property(self):
1517
return datetime_to_dbus(self.expires)
1518
1519
# LastApprovalRequest - property
1520
@dbus_service_property(_interface, signature="s", access="read")
1521
def LastApprovalRequest_dbus_property(self):
1522
return datetime_to_dbus(self.last_approval_request)
1523
1524
# Timeout - property
1525
@dbus_service_property(_interface, signature="t",
1526
access="readwrite")
1527
def Timeout_dbus_property(self, value=None):
1528
if value is None: # get
1529
return dbus.UInt64(self.timeout_milliseconds())
1530
self.timeout = datetime.timedelta(0, 0, 0, value)
1531
# Reschedule timeout
1532
if self.enabled:
1533
now = datetime.datetime.utcnow()
1534
time_to_die = timedelta_to_milliseconds(
1535
(self.last_checked_ok + self.timeout) - now)
1536
if time_to_die <= 0:
1537
# The timeout has passed
1538
self.disable()
1539
else:
1540
self.expires = (now +
1541
datetime.timedelta(milliseconds =
1542
time_to_die))
1543
if (getattr(self, "disable_initiator_tag", None)
1544
is None):
1545
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (gobject.timeout_add
1548
(time_to_die,
1549
self.disable))
1550
1551
# ExtendedTimeout - property
1552
@dbus_service_property(_interface, signature="t",
1553
access="readwrite")
1554
def ExtendedTimeout_dbus_property(self, value=None):
1555
if value is None: # get
1556
return dbus.UInt64(self.extended_timeout_milliseconds())
1557
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1558
1559
# Interval - property
1560
@dbus_service_property(_interface, signature="t",
1561
access="readwrite")
1562
def Interval_dbus_property(self, value=None):
1563
if value is None: # get
1564
return dbus.UInt64(self.interval_milliseconds())
1565
self.interval = datetime.timedelta(0, 0, 0, value)
1566
if getattr(self, "checker_initiator_tag", None) is None:
1567
return
1568
if self.enabled:
1569
# Reschedule checker run
1570
gobject.source_remove(self.checker_initiator_tag)
1571
self.checker_initiator_tag = (gobject.timeout_add
1572
(value, self.start_checker))
1573
self.start_checker() # Start one now, too
1574
1575
# Checker - property
1576
@dbus_service_property(_interface, signature="s",
1577
access="readwrite")
1578
def Checker_dbus_property(self, value=None):
1579
if value is None: # get
1580
return dbus.String(self.checker_command)
1581
self.checker_command = unicode(value)
1582
1583
# CheckerRunning - property
1584
@dbus_service_property(_interface, signature="b",
1585
access="readwrite")
1586
def CheckerRunning_dbus_property(self, value=None):
1587
if value is None: # get
1588
return dbus.Boolean(self.checker is not None)
1589
if value:
1590
self.start_checker()
1591
else:
1592
self.stop_checker()
1593
1594
# ObjectPath - property
1595
@dbus_service_property(_interface, signature="o", access="read")
1596
def ObjectPath_dbus_property(self):
1597
return self.dbus_object_path # is already a dbus.ObjectPath
1598
1599
# Secret = property
1600
@dbus_service_property(_interface, signature="ay",
1601
access="write", byte_arrays=True)
1602
def Secret_dbus_property(self, value):
1603
self.secret = str(value)
582
1604
583
1605
del _interface
584
1606
585
1607
586
def peer_certificate(session):
587
"Return the peer's OpenPGP certificate as a bytestring"
588
# If not an OpenPGP certificate...
589
if (gnutls.library.functions
590
.gnutls_certificate_type_get(session._c_object)
591
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
592
# ...do the normal thing
593
return session.peer_certificate
594
list_size = ctypes.c_uint()
595
cert_list = (gnutls.library.functions
596
.gnutls_certificate_get_peers
597
(session._c_object, ctypes.byref(list_size)))
598
if list_size.value == 0:
599
return None
600
cert = cert_list[0]
601
return ctypes.string_at(cert.data, cert.size)
602
603
604
def fingerprint(openpgp):
605
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
606
# New GnuTLS "datum" with the OpenPGP public key
607
datum = (gnutls.library.types
608
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
609
ctypes.POINTER
610
(ctypes.c_ubyte)),
611
ctypes.c_uint(len(openpgp))))
612
# New empty GnuTLS certificate
613
crt = gnutls.library.types.gnutls_openpgp_crt_t()
614
(gnutls.library.functions
615
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
616
# Import the OpenPGP public key into the certificate
617
(gnutls.library.functions
618
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
619
gnutls.library.constants
620
.GNUTLS_OPENPGP_FMT_RAW))
621
# Verify the self signature in the key
622
crtverify = ctypes.c_uint()
623
(gnutls.library.functions
624
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
625
if crtverify.value != 0:
626
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
627
raise gnutls.errors.CertificateSecurityError("Verify failed")
628
# New buffer for the fingerprint
629
buf = ctypes.create_string_buffer(20)
630
buf_len = ctypes.c_size_t()
631
# Get the fingerprint from the certificate into the buffer
632
(gnutls.library.functions
633
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
634
ctypes.byref(buf_len)))
635
# Deinit the certificate
636
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
637
# Convert the buffer to a Python bytestring
638
fpr = ctypes.string_at(buf, buf_len.value)
639
# Convert the bytestring to hexadecimal notation
640
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
641
return hex_fpr
642
643
644
class TCP_handler(SocketServer.BaseRequestHandler, object):
645
"""A TCP request handler class.
646
Instantiated by IPv6_TCPServer for each request to handle it.
1608
class ProxyClient(object):
1609
def __init__(self, child_pipe, fpr, address):
1610
self._pipe = child_pipe
1611
self._pipe.send(('init', fpr, address))
1612
if not self._pipe.recv():
1613
raise KeyError()
1614
1615
def __getattribute__(self, name):
1616
if name == '_pipe':
1617
return super(ProxyClient, self).__getattribute__(name)
1618
self._pipe.send(('getattr', name))
1619
data = self._pipe.recv()
1620
if data[0] == 'data':
1621
return data[1]
1622
if data[0] == 'function':
1623
def func(*args, **kwargs):
1624
self._pipe.send(('funcall', name, args, kwargs))
1625
return self._pipe.recv()[1]
1626
return func
1627
1628
def __setattr__(self, name, value):
1629
if name == '_pipe':
1630
return super(ProxyClient, self).__setattr__(name, value)
1631
self._pipe.send(('setattr', name, value))
1632
1633
1634
class ClientHandler(socketserver.BaseRequestHandler, object):
1635
"""A class to handle client connections.
1636
1637
Instantiated once for each connection to handle it.
647
1638
Note: This will run in its own forked process."""
648
1639
649
1640
def handle(self):
650
logger.info(u"TCP connection from: %s",
651
unicode(self.client_address))
652
session = (gnutls.connection
653
.ClientSession(self.request,
654
gnutls.connection
655
.X509Credentials()))
656
657
line = self.request.makefile().readline()
658
logger.debug(u"Protocol version: %r", line)
659
try:
660
if int(line.strip().split()[0]) > 1:
661
raise RuntimeError
662
except (ValueError, IndexError, RuntimeError), error:
663
logger.error(u"Unknown protocol version: %s", error)
664
return
665
666
# Note: gnutls.connection.X509Credentials is really a generic
667
# GnuTLS certificate credentials object so long as no X.509
668
# keys are added to it. Therefore, we can use it here despite
669
# using OpenPGP certificates.
670
671
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
672
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
673
# "+DHE-DSS"))
674
# Use a fallback default, since this MUST be set.
675
priority = self.server.settings.get("priority", "NORMAL")
676
(gnutls.library.functions
677
.gnutls_priority_set_direct(session._c_object,
678
priority, None))
679
680
try:
681
session.handshake()
682
except gnutls.errors.GNUTLSError, error:
683
logger.warning(u"Handshake failed: %s", error)
684
# Do not run session.bye() here: the session is not
685
# established. Just abandon the request.
686
return
687
try:
688
fpr = fingerprint(peer_certificate(session))
689
except (TypeError, gnutls.errors.GNUTLSError), error:
690
logger.warning(u"Bad certificate: %s", error)
691
session.bye()
692
return
693
logger.debug(u"Fingerprint: %s", fpr)
694
for c in self.server.clients:
695
if c.fingerprint == fpr:
696
client = c
697
break
698
else:
699
logger.warning(u"Client not found for fingerprint: %s",
700
fpr)
701
session.bye()
702
return
703
# Have to check if client.still_valid(), since it is possible
704
# that the client timed out while establishing the GnuTLS
705
# session.
706
if not client.still_valid():
707
logger.warning(u"Client %(name)s is invalid",
708
vars(client))
709
session.bye()
710
return
711
## This won't work here, since we're in a fork.
712
# client.bump_timeout()
713
sent_size = 0
714
while sent_size < len(client.secret):
715
sent = session.send(client.secret[sent_size:])
716
logger.debug(u"Sent: %d, remaining: %d",
717
sent, len(client.secret)
718
- (sent_size + sent))
719
sent_size += sent
720
session.bye()
721
722
723
class IPv6_TCPServer(SocketServer.ForkingMixIn,
724
SocketServer.TCPServer, object):
725
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1641
with contextlib.closing(self.server.child_pipe) as child_pipe:
1642
logger.info("TCP connection from: %s",
1643
unicode(self.client_address))
1644
logger.debug("Pipe FD: %d",
1645
self.server.child_pipe.fileno())
1646
1647
session = (gnutls.connection
1648
.ClientSession(self.request,
1649
gnutls.connection
1650
.X509Credentials()))
1651
1652
# Note: gnutls.connection.X509Credentials is really a
1653
# generic GnuTLS certificate credentials object so long as
1654
# no X.509 keys are added to it. Therefore, we can use it
1655
# here despite using OpenPGP certificates.
1656
1657
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1658
# "+AES-256-CBC", "+SHA1",
1659
# "+COMP-NULL", "+CTYPE-OPENPGP",
1660
# "+DHE-DSS"))
1661
# Use a fallback default, since this MUST be set.
1662
priority = self.server.gnutls_priority
1663
if priority is None:
1664
priority = "NORMAL"
1665
(gnutls.library.functions
1666
.gnutls_priority_set_direct(session._c_object,
1667
priority, None))
1668
1669
# Start communication using the Mandos protocol
1670
# Get protocol number
1671
line = self.request.makefile().readline()
1672
logger.debug("Protocol version: %r", line)
1673
try:
1674
if int(line.strip().split()[0]) > 1:
1675
raise RuntimeError
1676
except (ValueError, IndexError, RuntimeError) as error:
1677
logger.error("Unknown protocol version: %s", error)
1678
return
1679
1680
# Start GnuTLS connection
1681
try:
1682
session.handshake()
1683
except gnutls.errors.GNUTLSError as error:
1684
logger.warning("Handshake failed: %s", error)
1685
# Do not run session.bye() here: the session is not
1686
# established. Just abandon the request.
1687
return
1688
logger.debug("Handshake succeeded")
1689
1690
approval_required = False
1691
try:
1692
try:
1693
fpr = self.fingerprint(self.peer_certificate
1694
(session))
1695
except (TypeError,
1696
gnutls.errors.GNUTLSError) as error:
1697
logger.warning("Bad certificate: %s", error)
1698
return
1699
logger.debug("Fingerprint: %s", fpr)
1700
1701
try:
1702
client = ProxyClient(child_pipe, fpr,
1703
self.client_address)
1704
except KeyError:
1705
return
1706
1707
if client.approval_delay:
1708
delay = client.approval_delay
1709
client.approvals_pending += 1
1710
approval_required = True
1711
1712
while True:
1713
if not client.enabled:
1714
logger.info("Client %s is disabled",
1715
client.name)
1716
if self.server.use_dbus:
1717
# Emit D-Bus signal
1718
client.Rejected("Disabled")
1719
return
1720
1721
if client.approved or not client.approval_delay:
1722
#We are approved or approval is disabled
1723
break
1724
elif client.approved is None:
1725
logger.info("Client %s needs approval",
1726
client.name)
1727
if self.server.use_dbus:
1728
# Emit D-Bus signal
1729
client.NeedApproval(
1730
client.approval_delay_milliseconds(),
1731
client.approved_by_default)
1732
else:
1733
logger.warning("Client %s was not approved",
1734
client.name)
1735
if self.server.use_dbus:
1736
# Emit D-Bus signal
1737
client.Rejected("Denied")
1738
return
1739
1740
#wait until timeout or approved
1741
time = datetime.datetime.now()
1742
client.changedstate.acquire()
1743
(client.changedstate.wait
1744
(float(client.timedelta_to_milliseconds(delay)
1745
/ 1000)))
1746
client.changedstate.release()
1747
time2 = datetime.datetime.now()
1748
if (time2 - time) >= delay:
1749
if not client.approved_by_default:
1750
logger.warning("Client %s timed out while"
1751
" waiting for approval",
1752
client.name)
1753
if self.server.use_dbus:
1754
# Emit D-Bus signal
1755
client.Rejected("Approval timed out")
1756
return
1757
else:
1758
break
1759
else:
1760
delay -= time2 - time
1761
1762
sent_size = 0
1763
while sent_size < len(client.secret):
1764
try:
1765
sent = session.send(client.secret[sent_size:])
1766
except gnutls.errors.GNUTLSError as error:
1767
logger.warning("gnutls send failed",
1768
exc_info=error)
1769
return
1770
logger.debug("Sent: %d, remaining: %d",
1771
sent, len(client.secret)
1772
- (sent_size + sent))
1773
sent_size += sent
1774
1775
logger.info("Sending secret to %s", client.name)
1776
# bump the timeout using extended_timeout
1777
client.bump_timeout(client.extended_timeout)
1778
if self.server.use_dbus:
1779
# Emit D-Bus signal
1780
client.GotSecret()
1781
1782
finally:
1783
if approval_required:
1784
client.approvals_pending -= 1
1785
try:
1786
session.bye()
1787
except gnutls.errors.GNUTLSError as error:
1788
logger.warning("GnuTLS bye failed",
1789
exc_info=error)
1790
1791
@staticmethod
1792
def peer_certificate(session):
1793
"Return the peer's OpenPGP certificate as a bytestring"
1794
# If not an OpenPGP certificate...
1795
if (gnutls.library.functions
1796
.gnutls_certificate_type_get(session._c_object)
1797
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1798
# ...do the normal thing
1799
return session.peer_certificate
1800
list_size = ctypes.c_uint(1)
1801
cert_list = (gnutls.library.functions
1802
.gnutls_certificate_get_peers
1803
(session._c_object, ctypes.byref(list_size)))
1804
if not bool(cert_list) and list_size.value != 0:
1805
raise gnutls.errors.GNUTLSError("error getting peer"
1806
" certificate")
1807
if list_size.value == 0:
1808
return None
1809
cert = cert_list[0]
1810
return ctypes.string_at(cert.data, cert.size)
1811
1812
@staticmethod
1813
def fingerprint(openpgp):
1814
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1815
# New GnuTLS "datum" with the OpenPGP public key
1816
datum = (gnutls.library.types
1817
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1818
ctypes.POINTER
1819
(ctypes.c_ubyte)),
1820
ctypes.c_uint(len(openpgp))))
1821
# New empty GnuTLS certificate
1822
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1823
(gnutls.library.functions
1824
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1825
# Import the OpenPGP public key into the certificate
1826
(gnutls.library.functions
1827
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1828
gnutls.library.constants
1829
.GNUTLS_OPENPGP_FMT_RAW))
1830
# Verify the self signature in the key
1831
crtverify = ctypes.c_uint()
1832
(gnutls.library.functions
1833
.gnutls_openpgp_crt_verify_self(crt, 0,
1834
ctypes.byref(crtverify)))
1835
if crtverify.value != 0:
1836
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1837
raise (gnutls.errors.CertificateSecurityError
1838
("Verify failed"))
1839
# New buffer for the fingerprint
1840
buf = ctypes.create_string_buffer(20)
1841
buf_len = ctypes.c_size_t()
1842
# Get the fingerprint from the certificate into the buffer
1843
(gnutls.library.functions
1844
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1845
ctypes.byref(buf_len)))
1846
# Deinit the certificate
1847
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1848
# Convert the buffer to a Python bytestring
1849
fpr = ctypes.string_at(buf, buf_len.value)
1850
# Convert the bytestring to hexadecimal notation
1851
hex_fpr = binascii.hexlify(fpr).upper()
1852
return hex_fpr
1853
1854
1855
class MultiprocessingMixIn(object):
1856
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1857
def sub_process_main(self, request, address):
1858
try:
1859
self.finish_request(request, address)
1860
except Exception:
1861
self.handle_error(request, address)
1862
self.close_request(request)
1863
1864
def process_request(self, request, address):
1865
"""Start a new process to process the request."""
1866
proc = multiprocessing.Process(target = self.sub_process_main,
1867
args = (request,
1868
address))
1869
proc.start()
1870
return proc
1871
1872
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
""" adds a pipe to the MixIn """
1875
def process_request(self, request, client_address):
1876
"""Overrides and wraps the original process_request().
1877
1878
This function creates a new pipe in self.pipe
1879
"""
1880
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
1882
proc = MultiprocessingMixIn.process_request(self, request,
1883
client_address)
1884
self.child_pipe.close()
1885
self.add_pipe(parent_pipe, proc)
1886
1887
def add_pipe(self, parent_pipe, proc):
1888
"""Dummy function; override as necessary"""
1889
raise NotImplementedError
1890
1891
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1893
socketserver.TCPServer, object):
1894
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1895
726
1896
Attributes:
727
settings: Server settings
728
clients: Set() of Client objects
729
1897
enabled: Boolean; whether this server is activated yet
1898
interface: None or a network interface name (string)
1899
use_ipv6: Boolean; to use IPv6 or not
730
1900
"""
731
address_family = socket.AF_INET6
732
def __init__(self, *args, **kwargs):
733
if "settings" in kwargs:
734
self.settings = kwargs["settings"]
735
del kwargs["settings"]
736
if "clients" in kwargs:
737
self.clients = kwargs["clients"]
738
del kwargs["clients"]
739
self.enabled = False
740
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1901
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True):
1903
self.interface = interface
1904
if use_ipv6:
1905
self.address_family = socket.AF_INET6
1906
socketserver.TCPServer.__init__(self, server_address,
1907
RequestHandlerClass)
741
1908
def server_bind(self):
742
1909
"""This overrides the normal server_bind() function
743
1910
to bind to an interface if one was specified, and also NOT to
744
1911
bind to an address or port if they were not specified."""
745
if self.settings["interface"]:
746
# 25 is from /usr/include/asm-i486/socket.h
747
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
748
try:
749
self.socket.setsockopt(socket.SOL_SOCKET,
750
SO_BINDTODEVICE,
751
self.settings["interface"])
752
except socket.error, error:
753
if error[0] == errno.EPERM:
754
logger.error(u"No permission to"
755
u" bind to interface %s",
756
self.settings["interface"])
757
else:
758
raise error
1912
if self.interface is not None:
1913
if SO_BINDTODEVICE is None:
1914
logger.error("SO_BINDTODEVICE does not exist;"
1915
" cannot bind to interface %s",
1916
self.interface)
1917
else:
1918
try:
1919
self.socket.setsockopt(socket.SOL_SOCKET,
1920
SO_BINDTODEVICE,
1921
str(self.interface
1922
+ '\0'))
1923
except socket.error as error:
1924
if error[0] == errno.EPERM:
1925
logger.error("No permission to"
1926
" bind to interface %s",
1927
self.interface)
1928
elif error[0] == errno.ENOPROTOOPT:
1929
logger.error("SO_BINDTODEVICE not available;"
1930
" cannot bind to interface %s",
1931
self.interface)
1932
else:
1933
raise
759
1934
# Only bind(2) the socket if we really need to.
760
1935
if self.server_address[0] or self.server_address[1]:
761
1936
if not self.server_address[0]:
762
in6addr_any = "::"
763
self.server_address = (in6addr_any,
1937
if self.address_family == socket.AF_INET6:
1938
any_address = "::" # in6addr_any
1939
else:
1940
any_address = socket.INADDR_ANY
1941
self.server_address = (any_address,
764
1942
self.server_address[1])
765
1943
elif not self.server_address[1]:
766
1944
self.server_address = (self.server_address[0],
767
1945
0)
768
# if self.settings["interface"]:
1946
# if self.interface:
769
1947
# self.server_address = (self.server_address[0],
770
1948
# 0, # port
771
1949
# 0, # flowinfo
772
1950
# if_nametoindex
773
# (self.settings
774
# ["interface"]))
775
return super(IPv6_TCPServer, self).server_bind()
1951
# (self.interface))
1952
return socketserver.TCPServer.server_bind(self)
1953
1954
1955
class MandosServer(IPv6_TCPServer):
1956
"""Mandos server.
1957
1958
Attributes:
1959
clients: set of Client objects
1960
gnutls_priority GnuTLS priority string
1961
use_dbus: Boolean; to emit D-Bus signals or not
1962
1963
Assumes a gobject.MainLoop event loop.
1964
"""
1965
def __init__(self, server_address, RequestHandlerClass,
1966
interface=None, use_ipv6=True, clients=None,
1967
gnutls_priority=None, use_dbus=True):
1968
self.enabled = False
1969
self.clients = clients
1970
if self.clients is None:
1971
self.clients = {}
1972
self.use_dbus = use_dbus
1973
self.gnutls_priority = gnutls_priority
1974
IPv6_TCPServer.__init__(self, server_address,
1975
RequestHandlerClass,
1976
interface = interface,
1977
use_ipv6 = use_ipv6)
776
1978
def server_activate(self):
777
1979
if self.enabled:
778
return super(IPv6_TCPServer, self).server_activate()
1980
return socketserver.TCPServer.server_activate(self)
1981
779
1982
def enable(self):
780
1983
self.enabled = True
1984
1985
def add_pipe(self, parent_pipe, proc):
1986
# Call "handle_ipc" for both data and EOF events
1987
gobject.io_add_watch(parent_pipe.fileno(),
1988
gobject.IO_IN | gobject.IO_HUP,
1989
functools.partial(self.handle_ipc,
1990
parent_pipe =
1991
parent_pipe,
1992
proc = proc))
1993
1994
def handle_ipc(self, source, condition, parent_pipe=None,
1995
proc = None, client_object=None):
1996
# error, or the other end of multiprocessing.Pipe has closed
1997
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1998
# Wait for other process to exit
1999
proc.join()
2000
return False
2001
2002
# Read a request from the child
2003
request = parent_pipe.recv()
2004
command = request[0]
2005
2006
if command == 'init':
2007
fpr = request[1]
2008
address = request[2]
2009
2010
for c in self.clients.itervalues():
2011
if c.fingerprint == fpr:
2012
client = c
2013
break
2014
else:
2015
logger.info("Client not found for fingerprint: %s, ad"
2016
"dress: %s", fpr, address)
2017
if self.use_dbus:
2018
# Emit D-Bus signal
2019
mandos_dbus_service.ClientNotFound(fpr,
2020
address[0])
2021
parent_pipe.send(False)
2022
return False
2023
2024
gobject.io_add_watch(parent_pipe.fileno(),
2025
gobject.IO_IN | gobject.IO_HUP,
2026
functools.partial(self.handle_ipc,
2027
parent_pipe =
2028
parent_pipe,
2029
proc = proc,
2030
client_object =
2031
client))
2032
parent_pipe.send(True)
2033
# remove the old hook in favor of the new above hook on
2034
# same fileno
2035
return False
2036
if command == 'funcall':
2037
funcname = request[1]
2038
args = request[2]
2039
kwargs = request[3]
2040
2041
parent_pipe.send(('data', getattr(client_object,
2042
funcname)(*args,
2043
**kwargs)))
2044
2045
if command == 'getattr':
2046
attrname = request[1]
2047
if callable(client_object.__getattribute__(attrname)):
2048
parent_pipe.send(('function',))
2049
else:
2050
parent_pipe.send(('data', client_object
2051
.__getattribute__(attrname)))
2052
2053
if command == 'setattr':
2054
attrname = request[1]
2055
value = request[2]
2056
setattr(client_object, attrname, value)
2057
2058
return True
781
2059
782
2060
783
2061
def string_to_delta(interval):
784
2062
"""Parse a string and return a datetime.timedelta
785
2063
786
2064
>>> string_to_delta('7d')
787
2065
datetime.timedelta(7)
788
2066
>>> string_to_delta('60s')
791
2069
datetime.timedelta(0, 3600)
792
2070
>>> string_to_delta('24h')
793
2071
datetime.timedelta(1)
794
>>> string_to_delta(u'1w')
2072
>>> string_to_delta('1w')
795
2073
datetime.timedelta(7)
796
2074
>>> string_to_delta('5m 30s')
797
2075
datetime.timedelta(0, 330)
801
2079
try:
802
2080
suffix = unicode(s[-1])
803
2081
value = int(s[:-1])
804
if suffix == u"d":
2082
if suffix == "d":
805
2083
delta = datetime.timedelta(value)
806
elif suffix == u"s":
2084
elif suffix == "s":
807
2085
delta = datetime.timedelta(0, value)
808
elif suffix == u"m":
2086
elif suffix == "m":
809
2087
delta = datetime.timedelta(0, 0, 0, 0, value)
810
elif suffix == u"h":
2088
elif suffix == "h":
811
2089
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
812
elif suffix == u"w":
2090
elif suffix == "w":
813
2091
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
814
2092
else:
815
raise ValueError
816
except (ValueError, IndexError):
817
raise ValueError
2093
raise ValueError("Unknown suffix {0!r}"
2094
.format(suffix))
2095
except (ValueError, IndexError) as e:
2096
raise ValueError(*(e.args))
818
2097
timevalue += delta
819
2098
return timevalue
820
2099
821
2100
822
def server_state_changed(state):
823
"""Derived from the Avahi example code"""
824
if state == avahi.SERVER_COLLISION:
825
logger.error(u"Zeroconf server name collision")
826
service.remove()
827
elif state == avahi.SERVER_RUNNING:
828
service.add()
829
830
831
def entry_group_state_changed(state, error):
832
"""Derived from the Avahi example code"""
833
logger.debug(u"Avahi state change: %i", state)
834
835
if state == avahi.ENTRY_GROUP_ESTABLISHED:
836
logger.debug(u"Zeroconf service established.")
837
elif state == avahi.ENTRY_GROUP_COLLISION:
838
logger.warning(u"Zeroconf service name collision.")
839
service.rename()
840
elif state == avahi.ENTRY_GROUP_FAILURE:
841
logger.critical(u"Avahi: Error in group state changed %s",
842
unicode(error))
843
raise AvahiGroupError(u"State changed: %s" % unicode(error))
844
845
def if_nametoindex(interface):
846
"""Call the C function if_nametoindex(), or equivalent"""
847
global if_nametoindex
848
try:
849
if_nametoindex = (ctypes.cdll.LoadLibrary
850
(ctypes.util.find_library("c"))
851
.if_nametoindex)
852
except (OSError, AttributeError):
853
if "struct" not in sys.modules:
854
import struct
855
if "fcntl" not in sys.modules:
856
import fcntl
857
def if_nametoindex(interface):
858
"Get an interface index the hard way, i.e. using fcntl()"
859
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
860
with closing(socket.socket()) as s:
861
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
862
struct.pack("16s16x", interface))
863
interface_index = struct.unpack("I", ifreq[16:20])[0]
864
return interface_index
865
return if_nametoindex(interface)
866
867
868
2101
def daemon(nochdir = False, noclose = False):
869
2102
"""See daemon(3). Standard BSD Unix function.
2103
870
2104
This should really exist as os.daemon, but it doesn't (yet)."""
871
2105
if os.fork():
872
2106
sys.exit()
877
2111
sys.exit()
878
2112
if not noclose:
879
2113
# Close all standard open file descriptors
880
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2114
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
881
2115
if not stat.S_ISCHR(os.fstat(null).st_mode):
882
2116
raise OSError(errno.ENODEV,
883
"/dev/null not a character device")
2117
"{0} not a character device"
2118
.format(os.devnull))
884
2119
os.dup2(null, sys.stdin.fileno())
885
2120
os.dup2(null, sys.stdout.fileno())
886
2121
os.dup2(null, sys.stderr.fileno())
889
2124
890
2125
891
2126
def main():
892
parser = OptionParser(version = "%%prog %s" % version)
893
parser.add_option("-i", "--interface", type="string",
894
metavar="IF", help="Bind to interface IF")
895
parser.add_option("-a", "--address", type="string",
896
help="Address to listen for requests on")
897
parser.add_option("-p", "--port", type="int",
898
help="Port number to receive requests on")
899
parser.add_option("--check", action="store_true",
900
help="Run self-test")
901
parser.add_option("--debug", action="store_true",
902
help="Debug mode; run in foreground and log to"
903
" terminal")
904
parser.add_option("--priority", type="string", help="GnuTLS"
905
" priority string (see GnuTLS documentation)")
906
parser.add_option("--servicename", type="string", metavar="NAME",
907
help="Zeroconf service name")
908
parser.add_option("--configdir", type="string",
909
default="/etc/mandos", metavar="DIR",
910
help="Directory to search for configuration"
911
" files")
912
parser.add_option("--no-dbus", action="store_false",
913
dest="use_dbus",
914
help="Do not provide D-Bus system bus"
915
" interface")
916
options = parser.parse_args()[0]
2127
2128
##################################################################
2129
# Parsing of options, both command line and config file
2130
2131
parser = argparse.ArgumentParser()
2132
parser.add_argument("-v", "--version", action="version",
2133
version = "%(prog)s {0}".format(version),
2134
help="show version number and exit")
2135
parser.add_argument("-i", "--interface", metavar="IF",
2136
help="Bind to interface IF")
2137
parser.add_argument("-a", "--address",
2138
help="Address to listen for requests on")
2139
parser.add_argument("-p", "--port", type=int,
2140
help="Port number to receive requests on")
2141
parser.add_argument("--check", action="store_true",
2142
help="Run self-test")
2143
parser.add_argument("--debug", action="store_true",
2144
help="Debug mode; run in foreground and log"
2145
" to terminal")
2146
parser.add_argument("--debuglevel", metavar="LEVEL",
2147
help="Debug level for stdout output")
2148
parser.add_argument("--priority", help="GnuTLS"
2149
" priority string (see GnuTLS documentation)")
2150
parser.add_argument("--servicename",
2151
metavar="NAME", help="Zeroconf service name")
2152
parser.add_argument("--configdir",
2153
default="/etc/mandos", metavar="DIR",
2154
help="Directory to search for configuration"
2155
" files")
2156
parser.add_argument("--no-dbus", action="store_false",
2157
dest="use_dbus", help="Do not provide D-Bus"
2158
" system bus interface")
2159
parser.add_argument("--no-ipv6", action="store_false",
2160
dest="use_ipv6", help="Do not use IPv6")
2161
parser.add_argument("--no-restore", action="store_false",
2162
dest="restore", help="Do not restore stored"
2163
" state")
2164
parser.add_argument("--statedir", metavar="DIR",
2165
help="Directory to save/restore state in")
2166
2167
options = parser.parse_args()
917
2168
918
2169
if options.check:
919
2170
import doctest
929
2180
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
930
2181
"servicename": "Mandos",
931
2182
"use_dbus": "True",
2183
"use_ipv6": "True",
2184
"debuglevel": "",
2185
"restore": "True",
2186
"statedir": "/var/lib/mandos"
932
2187
}
933
2188
934
2189
# Parse config file for server-global settings
935
server_config = ConfigParser.SafeConfigParser(server_defaults)
2190
server_config = configparser.SafeConfigParser(server_defaults)
936
2191
del server_defaults
937
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2192
server_config.read(os.path.join(options.configdir,
2193
"mandos.conf"))
938
2194
# Convert the SafeConfigParser object to a dict
939
2195
server_settings = server_config.defaults()
940
# Use getboolean on the boolean config options
941
server_settings["debug"] = (server_config.getboolean
942
("DEFAULT", "debug"))
943
server_settings["use_dbus"] = (server_config.getboolean
944
("DEFAULT", "use_dbus"))
2196
# Use the appropriate methods on the non-string config options
2197
for option in ("debug", "use_dbus", "use_ipv6"):
2198
server_settings[option] = server_config.getboolean("DEFAULT",
2199
option)
2200
if server_settings["port"]:
2201
server_settings["port"] = server_config.getint("DEFAULT",
2202
"port")
945
2203
del server_config
946
2204
947
2205
# Override the settings from the config file with command line
948
2206
# options, if set.
949
2207
for option in ("interface", "address", "port", "debug",
950
2208
"priority", "servicename", "configdir",
951
"use_dbus"):
2209
"use_dbus", "use_ipv6", "debuglevel", "restore",
2210
"statedir"):
952
2211
value = getattr(options, option)
953
2212
if value is not None:
954
2213
server_settings[option] = value
955
2214
del options
2215
# Force all strings to be unicode
2216
for option in server_settings.keys():
2217
if type(server_settings[option]) is str:
2218
server_settings[option] = unicode(server_settings[option])
956
2219
# Now we have our good server settings in "server_settings"
957
2220
2221
##################################################################
2222
958
2223
# For convenience
959
2224
debug = server_settings["debug"]
2225
debuglevel = server_settings["debuglevel"]
960
2226
use_dbus = server_settings["use_dbus"]
2227
use_ipv6 = server_settings["use_ipv6"]
2228
stored_state_path = os.path.join(server_settings["statedir"],
2229
stored_state_file)
961
2230
962
if not debug:
963
syslogger.setLevel(logging.WARNING)
964
console.setLevel(logging.WARNING)
2231
if debug:
2232
initlogger(debug, logging.DEBUG)
2233
else:
2234
if not debuglevel:
2235
initlogger(debug)
2236
else:
2237
level = getattr(logging, debuglevel.upper())
2238
initlogger(debug, level)
965
2239
966
2240
if server_settings["servicename"] != "Mandos":
967
2241
syslogger.setFormatter(logging.Formatter
968
('Mandos (%s): %%(levelname)s:'
969
' %%(message)s'
970
% server_settings["servicename"]))
2242
('Mandos ({0}) [%(process)d]:'
2243
' %(levelname)s: %(message)s'
2244
.format(server_settings
2245
["servicename"])))
971
2246
972
2247
# Parse config file with clients
973
client_defaults = { "timeout": "1h",
974
"interval": "5m",
975
"checker": "fping -q -- %(host)s",
976
"host": "",
977
}
978
client_config = ConfigParser.SafeConfigParser(client_defaults)
2248
client_config = configparser.SafeConfigParser(Client
2249
.client_defaults)
979
2250
client_config.read(os.path.join(server_settings["configdir"],
980
2251
"clients.conf"))
981
2252
982
clients = Set()
983
tcp_server = IPv6_TCPServer((server_settings["address"],
984
server_settings["port"]),
985
TCP_handler,
986
settings=server_settings,
987
clients=clients)
988
pidfilename = "/var/run/mandos.pid"
989
try:
990
pidfile = open(pidfilename, "w")
991
except IOError, error:
992
logger.error("Could not open file %r", pidfilename)
993
994
try:
995
uid = pwd.getpwnam("_mandos").pw_uid
996
except KeyError:
997
try:
998
uid = pwd.getpwnam("mandos").pw_uid
999
except KeyError:
1000
try:
1001
uid = pwd.getpwnam("nobody").pw_uid
1002
except KeyError:
1003
uid = 65534
1004
try:
1005
gid = pwd.getpwnam("_mandos").pw_gid
1006
except KeyError:
1007
try:
1008
gid = pwd.getpwnam("mandos").pw_gid
1009
except KeyError:
1010
try:
1011
gid = pwd.getpwnam("nogroup").pw_gid
1012
except KeyError:
1013
gid = 65534
1014
try:
2253
global mandos_dbus_service
2254
mandos_dbus_service = None
2255
2256
tcp_server = MandosServer((server_settings["address"],
2257
server_settings["port"]),
2258
ClientHandler,
2259
interface=(server_settings["interface"]
2260
or None),
2261
use_ipv6=use_ipv6,
2262
gnutls_priority=
2263
server_settings["priority"],
2264
use_dbus=use_dbus)
2265
if not debug:
2266
pidfilename = "/var/run/mandos.pid"
2267
try:
2268
pidfile = open(pidfilename, "w")
2269
except IOError as e:
2270
logger.error("Could not open file %r", pidfilename,
2271
exc_info=e)
2272
2273
for name in ("_mandos", "mandos", "nobody"):
2274
try:
2275
uid = pwd.getpwnam(name).pw_uid
2276
gid = pwd.getpwnam(name).pw_gid
2277
break
2278
except KeyError:
2279
continue
2280
else:
2281
uid = 65534
2282
gid = 65534
2283
try:
2284
os.setgid(gid)
1015
2285
os.setuid(uid)
1016
os.setgid(gid)
1017
except OSError, error:
2286
except OSError as error:
1018
2287
if error[0] != errno.EPERM:
1019
2288
raise error
1020
2289
1021
global service
1022
service = AvahiService(name = server_settings["servicename"],
1023
servicetype = "_mandos._tcp", )
1024
if server_settings["interface"]:
1025
service.interface = (if_nametoindex
1026
(server_settings["interface"]))
2290
if debug:
2291
# Enable all possible GnuTLS debugging
2292
2293
# "Use a log level over 10 to enable all debugging options."
2294
# - GnuTLS manual
2295
gnutls.library.functions.gnutls_global_set_log_level(11)
2296
2297
@gnutls.library.types.gnutls_log_func
2298
def debug_gnutls(level, string):
2299
logger.debug("GnuTLS: %s", string[:-1])
2300
2301
(gnutls.library.functions
2302
.gnutls_global_set_log_function(debug_gnutls))
2303
2304
# Redirect stdin so all checkers get /dev/null
2305
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2306
os.dup2(null, sys.stdin.fileno())
2307
if null > 2:
2308
os.close(null)
2309
2310
# Need to fork before connecting to D-Bus
2311
if not debug:
2312
# Close all input and output, do double fork, etc.
2313
daemon()
2314
2315
gobject.threads_init()
1027
2316
1028
2317
global main_loop
1029
global bus
1030
global server
1031
2318
# From the Avahi example code
1032
DBusGMainLoop(set_as_default=True )
2319
DBusGMainLoop(set_as_default=True)
1033
2320
main_loop = gobject.MainLoop()
1034
2321
bus = dbus.SystemBus()
1035
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1036
avahi.DBUS_PATH_SERVER),
1037
avahi.DBUS_INTERFACE_SERVER)
1038
2322
# End of Avahi example code
1039
2323
if use_dbus:
1040
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos",
1041
bus)
1042
1043
clients.update(Set(Client(name = section,
1044
config
1045
= dict(client_config.items(section)),
1046
use_dbus = use_dbus)
1047
for section in client_config.sections()))
1048
if not clients:
1049
logger.warning(u"No clients defined")
1050
1051
if debug:
1052
# Redirect stdin so all checkers get /dev/null
1053
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1054
os.dup2(null, sys.stdin.fileno())
1055
if null > 2:
1056
os.close(null)
1057
else:
1058
# No console logging
1059
logger.removeHandler(console)
1060
# Close all input and output, do double fork, etc.
1061
daemon()
1062
1063
try:
1064
pid = os.getpid()
1065
pidfile.write(str(pid) + "\n")
1066
pidfile.close()
1067
del pidfile
1068
except IOError:
1069
logger.error(u"Could not write to file %r with PID %d",
1070
pidfilename, pid)
1071
except NameError:
1072
# "pidfile" was never created
1073
pass
1074
del pidfilename
1075
1076
def cleanup():
1077
"Cleanup function; run on exit"
1078
global group
1079
# From the Avahi example code
1080
if not group is None:
1081
group.Free()
1082
group = None
1083
# End of Avahi example code
1084
1085
while clients:
1086
client = clients.pop()
1087
client.disable_hook = None
1088
client.disable()
1089
1090
atexit.register(cleanup)
2324
try:
2325
bus_name = dbus.service.BusName("se.recompile.Mandos",
2326
bus, do_not_queue=True)
2327
old_bus_name = (dbus.service.BusName
2328
("se.bsnet.fukt.Mandos", bus,
2329
do_not_queue=True))
2330
except dbus.exceptions.NameExistsException as e:
2331
logger.error("Disabling D-Bus:", exc_info=e)
2332
use_dbus = False
2333
server_settings["use_dbus"] = False
2334
tcp_server.use_dbus = False
2335
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2336
service = AvahiServiceToSyslog(name =
2337
server_settings["servicename"],
2338
servicetype = "_mandos._tcp",
2339
protocol = protocol, bus = bus)
2340
if server_settings["interface"]:
2341
service.interface = (if_nametoindex
2342
(str(server_settings["interface"])))
2343
2344
global multiprocessing_manager
2345
multiprocessing_manager = multiprocessing.Manager()
2346
2347
client_class = Client
2348
if use_dbus:
2349
client_class = functools.partial(ClientDBus, bus = bus)
2350
2351
client_settings = Client.config_parser(client_config)
2352
old_client_settings = {}
2353
clients_data = {}
2354
2355
# Get client data and settings from last running state.
2356
if server_settings["restore"]:
2357
try:
2358
with open(stored_state_path, "rb") as stored_state:
2359
clients_data, old_client_settings = (pickle.load
2360
(stored_state))
2361
os.remove(stored_state_path)
2362
except IOError as e:
2363
if e.errno == errno.ENOENT:
2364
logger.warning("Could not load persistent state: {0}"
2365
.format(os.strerror(e.errno)))
2366
else:
2367
logger.critical("Could not load persistent state:",
2368
exc_info=e)
2369
raise
2370
except EOFError as e:
2371
logger.warning("Could not load persistent state: "
2372
"EOFError:", exc_info=e)
2373
2374
with PGPEngine() as pgp:
2375
for client_name, client in clients_data.iteritems():
2376
# Decide which value to use after restoring saved state.
2377
# We have three different values: Old config file,
2378
# new config file, and saved state.
2379
# New config value takes precedence if it differs from old
2380
# config value, otherwise use saved state.
2381
for name, value in client_settings[client_name].items():
2382
try:
2383
# For each value in new config, check if it
2384
# differs from the old config value (Except for
2385
# the "secret" attribute)
2386
if (name != "secret" and
2387
value != old_client_settings[client_name]
2388
[name]):
2389
client[name] = value
2390
except KeyError:
2391
pass
2392
2393
# Clients who has passed its expire date can still be
2394
# enabled if its last checker was successful. Clients
2395
# whose checker succeeded before we stored its state is
2396
# assumed to have successfully run all checkers during
2397
# downtime.
2398
if client["enabled"]:
2399
if datetime.datetime.utcnow() >= client["expires"]:
2400
if not client["last_checked_ok"]:
2401
logger.warning(
2402
"disabling client {0} - Client never "
2403
"performed a successful checker"
2404
.format(client_name))
2405
client["enabled"] = False
2406
elif client["last_checker_status"] != 0:
2407
logger.warning(
2408
"disabling client {0} - Client "
2409
"last checker failed with error code {1}"
2410
.format(client_name,
2411
client["last_checker_status"]))
2412
client["enabled"] = False
2413
else:
2414
client["expires"] = (datetime.datetime
2415
.utcnow()
2416
+ client["timeout"])
2417
logger.debug("Last checker succeeded,"
2418
" keeping {0} enabled"
2419
.format(client_name))
2420
try:
2421
client["secret"] = (
2422
pgp.decrypt(client["encrypted_secret"],
2423
client_settings[client_name]
2424
["secret"]))
2425
except PGPError:
2426
# If decryption fails, we use secret from new settings
2427
logger.debug("Failed to decrypt {0} old secret"
2428
.format(client_name))
2429
client["secret"] = (
2430
client_settings[client_name]["secret"])
2431
2432
# Add/remove clients based on new changes made to config
2433
for client_name in (set(old_client_settings)
2434
- set(client_settings)):
2435
del clients_data[client_name]
2436
for client_name in (set(client_settings)
2437
- set(old_client_settings)):
2438
clients_data[client_name] = client_settings[client_name]
2439
2440
# Create all client objects
2441
for client_name, client in clients_data.iteritems():
2442
tcp_server.clients[client_name] = client_class(
2443
name = client_name, settings = client)
2444
2445
if not tcp_server.clients:
2446
logger.warning("No clients defined")
1091
2447
1092
2448
if not debug:
2449
try:
2450
with pidfile:
2451
pid = os.getpid()
2452
pidfile.write(str(pid) + "\n".encode("utf-8"))
2453
del pidfile
2454
except IOError:
2455
logger.error("Could not write to file %r with PID %d",
2456
pidfilename, pid)
2457
except NameError:
2458
# "pidfile" was never created
2459
pass
2460
del pidfilename
1093
2461
signal.signal(signal.SIGINT, signal.SIG_IGN)
2462
1094
2463
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1095
2464
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1096
2465
1097
2466
if use_dbus:
1098
class MandosServer(dbus.service.Object):
2467
@alternate_dbus_interfaces({"se.recompile.Mandos":
2468
"se.bsnet.fukt.Mandos"})
2469
class MandosDBusService(DBusObjectWithProperties):
1099
2470
"""A D-Bus proxy object"""
1100
2471
def __init__(self):
1101
dbus.service.Object.__init__(self, bus,
1102
"/Mandos")
1103
_interface = u"org.mandos_system.Mandos"
1104
1105
@dbus.service.signal(_interface, signature="oa{sv}")
1106
def ClientAdded(self, objpath, properties):
1107
"D-Bus signal"
1108
pass
1109
2472
dbus.service.Object.__init__(self, bus, "/")
2473
_interface = "se.recompile.Mandos"
2474
2475
@dbus_interface_annotations(_interface)
2476
def _foo(self):
2477
return { "org.freedesktop.DBus.Property"
2478
".EmitsChangedSignal":
2479
"false"}
2480
1110
2481
@dbus.service.signal(_interface, signature="o")
1111
def ClientRemoved(self, objpath):
1112
"D-Bus signal"
1113
pass
1114
2482
def ClientAdded(self, objpath):
2483
"D-Bus signal"
2484
pass
2485
2486
@dbus.service.signal(_interface, signature="ss")
2487
def ClientNotFound(self, fingerprint, address):
2488
"D-Bus signal"
2489
pass
2490
2491
@dbus.service.signal(_interface, signature="os")
2492
def ClientRemoved(self, objpath, name):
2493
"D-Bus signal"
2494
pass
2495
1115
2496
@dbus.service.method(_interface, out_signature="ao")
1116
2497
def GetAllClients(self):
1117
return dbus.Array(c.dbus_object_path for c in clients)
1118
1119
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
2498
"D-Bus method"
2499
return dbus.Array(c.dbus_object_path
2500
for c in
2501
tcp_server.clients.itervalues())
2502
2503
@dbus.service.method(_interface,
2504
out_signature="a{oa{sv}}")
1120
2505
def GetAllClientsWithProperties(self):
2506
"D-Bus method"
1121
2507
return dbus.Dictionary(
1122
((c.dbus_object_path, c.GetAllProperties())
1123
for c in clients),
2508
((c.dbus_object_path, c.GetAll(""))
2509
for c in tcp_server.clients.itervalues()),
1124
2510
signature="oa{sv}")
1125
2511
1126
2512
@dbus.service.method(_interface, in_signature="o")
1127
2513
def RemoveClient(self, object_path):
1128
for c in clients:
2514
"D-Bus method"
2515
for c in tcp_server.clients.itervalues():
1129
2516
if c.dbus_object_path == object_path:
1130
clients.remove(c)
2517
del tcp_server.clients[c.name]
2518
c.remove_from_connection()
1131
2519
# Don't signal anything except ClientRemoved
1132
c.use_dbus = False
1133
c.disable()
2520
c.disable(quiet=True)
1134
2521
# Emit D-Bus signal
1135
self.ClientRemoved(object_path)
2522
self.ClientRemoved(object_path, c.name)
1136
2523
return
1137
raise KeyError
1138
@dbus.service.method(_interface)
1139
def Quit(self):
1140
main_loop.quit()
1141
2524
raise KeyError(object_path)
2525
1142
2526
del _interface
1143
1144
mandos_server = MandosServer()
1145
1146
for client in clients:
2527
2528
mandos_dbus_service = MandosDBusService()
2529
2530
def cleanup():
2531
"Cleanup function; run on exit"
2532
service.cleanup()
2533
2534
multiprocessing.active_children()
2535
if not (tcp_server.clients or client_settings):
2536
return
2537
2538
# Store client before exiting. Secrets are encrypted with key
2539
# based on what config file has. If config file is
2540
# removed/edited, old secret will thus be unrecovable.
2541
clients = {}
2542
with PGPEngine() as pgp:
2543
for client in tcp_server.clients.itervalues():
2544
key = client_settings[client.name]["secret"]
2545
client.encrypted_secret = pgp.encrypt(client.secret,
2546
key)
2547
client_dict = {}
2548
2549
# A list of attributes that can not be pickled
2550
# + secret.
2551
exclude = set(("bus", "changedstate", "secret",
2552
"checker"))
2553
for name, typ in (inspect.getmembers
2554
(dbus.service.Object)):
2555
exclude.add(name)
2556
2557
client_dict["encrypted_secret"] = (client
2558
.encrypted_secret)
2559
for attr in client.client_structure:
2560
if attr not in exclude:
2561
client_dict[attr] = getattr(client, attr)
2562
2563
clients[client.name] = client_dict
2564
del client_settings[client.name]["secret"]
2565
2566
try:
2567
with (tempfile.NamedTemporaryFile
2568
(mode='wb', suffix=".pickle", prefix='clients-',
2569
dir=os.path.dirname(stored_state_path),
2570
delete=False)) as stored_state:
2571
pickle.dump((clients, client_settings), stored_state)
2572
tempname=stored_state.name
2573
os.rename(tempname, stored_state_path)
2574
except (IOError, OSError) as e:
2575
if not debug:
2576
try:
2577
os.remove(tempname)
2578
except NameError:
2579
pass
2580
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2581
logger.warning("Could not save persistent state: {0}"
2582
.format(os.strerror(e.errno)))
2583
else:
2584
logger.warning("Could not save persistent state:",
2585
exc_info=e)
2586
raise e
2587
2588
# Delete all clients, and settings from config
2589
while tcp_server.clients:
2590
name, client = tcp_server.clients.popitem()
2591
if use_dbus:
2592
client.remove_from_connection()
2593
# Don't signal anything except ClientRemoved
2594
client.disable(quiet=True)
2595
if use_dbus:
2596
# Emit D-Bus signal
2597
mandos_dbus_service.ClientRemoved(client
2598
.dbus_object_path,
2599
client.name)
2600
client_settings.clear()
2601
2602
atexit.register(cleanup)
2603
2604
for client in tcp_server.clients.itervalues():
1147
2605
if use_dbus:
1148
2606
# Emit D-Bus signal
1149
mandos_server.ClientAdded(client.dbus_object_path,
1150
client.GetAllProperties())
1151
client.enable()
2607
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2608
# Need to initiate checking of clients
2609
if client.enabled:
2610
client.init_checker()
1152
2611
1153
2612
tcp_server.enable()
1154
2613
tcp_server.server_activate()
1155
2614
1156
2615
# Find out what port we got
1157
2616
service.port = tcp_server.socket.getsockname()[1]
1158
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1159
u" scope_id %d" % tcp_server.socket.getsockname())
2617
if use_ipv6:
2618
logger.info("Now listening on address %r, port %d,"
2619
" flowinfo %d, scope_id %d",
2620
*tcp_server.socket.getsockname())
2621
else: # IPv4
2622
logger.info("Now listening on address %r, port %d",
2623
*tcp_server.socket.getsockname())
1160
2624
1161
2625
#service.interface = tcp_server.socket.getsockname()[3]
1162
2626
1163
2627
try:
1164
2628
# From the Avahi example code
1165
server.connect_to_signal("StateChanged", server_state_changed)
1166
2629
try:
1167
server_state_changed(server.GetState())
1168
except dbus.exceptions.DBusException, error:
1169
logger.critical(u"DBusException: %s", error)
2630
service.activate()
2631
except dbus.exceptions.DBusException as error:
2632
logger.critical("D-Bus Exception", exc_info=error)
2633
cleanup()
1170
2634
sys.exit(1)
1171
2635
# End of Avahi example code
1172
2636
1175
2639
(tcp_server.handle_request
1176
2640
(*args[2:], **kwargs) or True))
1177
2641
1178
logger.debug(u"Starting main loop")
2642
logger.debug("Starting main loop")
1179
2643
main_loop.run()
1180
except AvahiError, error:
1181
logger.critical(u"AvahiError: %s", error)
2644
except AvahiError as error:
2645
logger.critical("Avahi Error", exc_info=error)
2646
cleanup()
1182
2647
sys.exit(1)
1183
2648
except KeyboardInterrupt:
1184
2649
if debug:
1185
print
2650
print("", file=sys.stderr)
2651
logger.debug("Server received KeyboardInterrupt")
2652
logger.debug("Server exiting")
2653
# Must run before the D-Bus bus name gets deregistered
2654
cleanup()
1186
2655
1187
2656
if __name__ == '__main__':
1188
2657
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0