/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2011-08-08 21:12:37 UTC
  • Revision ID: teddy@fukt.bsnet.se-20110808211237-jejsz5brjytrjot8
* Makefile (DOCS): Added "intro.8mandos".
  (intro.8mandos, intro.8mandos.xhtml): New.
* README: Replaced text with link, reference and short summary.
* intro.xml: New.
* mandos-clients.conf.xml (SEE ALSO): Added "intro(8mandos)".
* mandos-ctl.xml (SEE ALSO): - '' -
* mandos-keygen.xml (SEE ALSO): - '' -
* mandos-monitor.xml (SEE ALSO): - '' -
* mandos.conf.xml (SEE ALSO): - '' -
* mandos.xml (SEE ALSO): - '' -
* plugin-runner.xml (SEE ALSO): - '' -
* plugins.d/askpass-fifo.xml (SEE ALSO): - '' -
* plugins.d/mandos-client.xml (SEE ALSO): - '' -
* plugins.d/password-prompt.xml (SEE ALSO): - '' -
* plugins.d/plymouth.xml (SEE ALSO): - '' -
* plugins.d/splashy.xml (SEE ALSO): - '' -
* plugins.d/usplash.xml (SEE ALSO): - '' -

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Lines of Context:
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
 
3
# 
4
4
# Mandos server - give out binary blobs to connecting clients.
5
 
#
 
5
# 
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
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
 
#
 
12
# 
13
13
# Everything else is
14
 
# Copyright © 2008-2019 Teddy Hogeborn
15
 
# Copyright © 2008-2019 Björn Påhlsson
16
 
#
17
 
# This file is part of Mandos.
18
 
#
19
 
# Mandos is free software: you can redistribute it and/or modify it
20
 
# under the terms of the GNU General Public License as published by
 
14
# Copyright © 2008-2011 Teddy Hogeborn
 
15
# Copyright © 2008-2011 Björn Påhlsson
 
16
# 
 
17
# This program is free software: you can redistribute it and/or modify
 
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
 
#     Mandos is distributed in the hope that it will be useful, but
25
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
22
#     This program is distributed in the hope that it will be useful,
 
23
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
27
25
#     GNU General Public License for more details.
28
 
#
 
26
# 
29
27
# You should have received a copy of the GNU General Public License
30
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
31
 
#
32
 
# Contact the authors at <mandos@recompile.se>.
33
 
#
 
28
# along with this program.  If not, see
 
29
# <http://www.gnu.org/licenses/>.
 
30
# 
 
31
# Contact the authors at <mandos@fukt.bsnet.se>.
 
32
# 
34
33
 
35
34
from __future__ import (division, absolute_import, print_function,
36
35
                        unicode_literals)
37
36
 
38
 
try:
39
 
    from future_builtins import *
40
 
except ImportError:
41
 
    pass
42
 
 
43
 
try:
44
 
    import SocketServer as socketserver
45
 
except ImportError:
46
 
    import socketserver
 
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
 
try:
52
 
    import ConfigParser as configparser
53
 
except ImportError:
54
 
    import configparser
 
42
import gnutls.crypto
 
43
import gnutls.connection
 
44
import gnutls.errors
 
45
import gnutls.library.functions
 
46
import gnutls.library.constants
 
47
import gnutls.library.types
 
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
 
try:
70
 
    import cPickle as pickle
71
 
except ImportError:
72
 
    import pickle
 
63
import cPickle as pickle
73
64
import multiprocessing
74
 
import types
75
 
import binascii
76
 
import tempfile
77
 
import itertools
78
 
import collections
79
 
import codecs
80
65
 
81
66
import dbus
82
67
import dbus.service
83
 
from gi.repository import GLib
 
68
import gobject
 
69
import avahi
84
70
from dbus.mainloop.glib import DBusGMainLoop
85
71
import ctypes
86
72
import ctypes.util
87
73
import xml.dom.minidom
88
74
import inspect
89
75
 
90
 
# Try to find the value of SO_BINDTODEVICE:
91
76
try:
92
 
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
 
    # newer, and it is also the most natural place for it:
94
77
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
78
except AttributeError:
96
79
    try:
97
 
        # This is where SO_BINDTODEVICE was up to and including Python
98
 
        # 2.6, and also 3.2:
99
80
        from IN import SO_BINDTODEVICE
100
81
    except ImportError:
101
 
        # In Python 2.7 it seems to have been removed entirely.
102
 
        # Try running the C preprocessor:
103
 
        try:
104
 
            cc = subprocess.Popen(["cc", "--language=c", "-E",
105
 
                                   "/dev/stdin"],
106
 
                                  stdin=subprocess.PIPE,
107
 
                                  stdout=subprocess.PIPE)
108
 
            stdout = cc.communicate(
109
 
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
 
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
 
        except (OSError, ValueError, IndexError):
112
 
            # No value found
113
 
            SO_BINDTODEVICE = None
114
 
 
115
 
if sys.version_info.major == 2:
116
 
    str = unicode
117
 
 
118
 
version = "1.8.4"
119
 
stored_state_file = "clients.pickle"
120
 
 
121
 
logger = logging.getLogger()
122
 
syslogger = None
123
 
 
124
 
try:
125
 
    if_nametoindex = ctypes.cdll.LoadLibrary(
126
 
        ctypes.util.find_library("c")).if_nametoindex
127
 
except (OSError, AttributeError):
128
 
 
129
 
    def if_nametoindex(interface):
130
 
        "Get an interface index the hard way, i.e. using fcntl()"
131
 
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
132
 
        with contextlib.closing(socket.socket()) as s:
133
 
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
 
                                struct.pack(b"16s16x", interface))
135
 
        interface_index = struct.unpack("I", ifreq[16:20])[0]
136
 
        return interface_index
137
 
 
138
 
 
139
 
def copy_function(func):
140
 
    """Make a copy of a function"""
141
 
    if sys.version_info.major == 2:
142
 
        return types.FunctionType(func.func_code,
143
 
                                  func.func_globals,
144
 
                                  func.func_name,
145
 
                                  func.func_defaults,
146
 
                                  func.func_closure)
147
 
    else:
148
 
        return types.FunctionType(func.__code__,
149
 
                                  func.__globals__,
150
 
                                  func.__name__,
151
 
                                  func.__defaults__,
152
 
                                  func.__closure__)
153
 
 
154
 
 
155
 
def initlogger(debug, level=logging.WARNING):
156
 
    """init logger and add loglevel"""
157
 
 
158
 
    global syslogger
159
 
    syslogger = (logging.handlers.SysLogHandler(
160
 
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
 
        address="/dev/log"))
162
 
    syslogger.setFormatter(logging.Formatter
163
 
                           ('Mandos [%(process)d]: %(levelname)s:'
164
 
                            ' %(message)s'))
165
 
    logger.addHandler(syslogger)
166
 
 
167
 
    if debug:
168
 
        console = logging.StreamHandler()
169
 
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
 
                                               ' [%(process)d]:'
171
 
                                               ' %(levelname)s:'
172
 
                                               ' %(message)s'))
173
 
        logger.addHandler(console)
174
 
    logger.setLevel(level)
175
 
 
176
 
 
177
 
class PGPError(Exception):
178
 
    """Exception if encryption/decryption fails"""
179
 
    pass
180
 
 
181
 
 
182
 
class PGPEngine(object):
183
 
    """A simple class for OpenPGP symmetric encryption & decryption"""
184
 
 
185
 
    def __init__(self):
186
 
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
 
        self.gpg = "gpg"
188
 
        try:
189
 
            output = subprocess.check_output(["gpgconf"])
190
 
            for line in output.splitlines():
191
 
                name, text, path = line.split(b":")
192
 
                if name == "gpg":
193
 
                    self.gpg = path
194
 
                    break
195
 
        except OSError as e:
196
 
            if e.errno != errno.ENOENT:
197
 
                raise
198
 
        self.gnupgargs = ['--batch',
199
 
                          '--homedir', self.tempdir,
200
 
                          '--force-mdc',
201
 
                          '--quiet']
202
 
        # Only GPG version 1 has the --no-use-agent option.
203
 
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
 
            self.gnupgargs.append("--no-use-agent")
205
 
 
206
 
    def __enter__(self):
207
 
        return self
208
 
 
209
 
    def __exit__(self, exc_type, exc_value, traceback):
210
 
        self._cleanup()
211
 
        return False
212
 
 
213
 
    def __del__(self):
214
 
        self._cleanup()
215
 
 
216
 
    def _cleanup(self):
217
 
        if self.tempdir is not None:
218
 
            # Delete contents of tempdir
219
 
            for root, dirs, files in os.walk(self.tempdir,
220
 
                                             topdown=False):
221
 
                for filename in files:
222
 
                    os.remove(os.path.join(root, filename))
223
 
                for dirname in dirs:
224
 
                    os.rmdir(os.path.join(root, dirname))
225
 
            # Remove tempdir
226
 
            os.rmdir(self.tempdir)
227
 
            self.tempdir = None
228
 
 
229
 
    def password_encode(self, password):
230
 
        # Passphrase can not be empty and can not contain newlines or
231
 
        # NUL bytes.  So we prefix it and hex encode it.
232
 
        encoded = b"mandos" + binascii.hexlify(password)
233
 
        if len(encoded) > 2048:
234
 
            # GnuPG can't handle long passwords, so encode differently
235
 
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
 
                       .replace(b"\n", b"\\n")
237
 
                       .replace(b"\0", b"\\x00"))
238
 
        return encoded
239
 
 
240
 
    def encrypt(self, data, password):
241
 
        passphrase = self.password_encode(password)
242
 
        with tempfile.NamedTemporaryFile(
243
 
                dir=self.tempdir) as passfile:
244
 
            passfile.write(passphrase)
245
 
            passfile.flush()
246
 
            proc = subprocess.Popen([self.gpg, '--symmetric',
247
 
                                     '--passphrase-file',
248
 
                                     passfile.name]
249
 
                                    + self.gnupgargs,
250
 
                                    stdin=subprocess.PIPE,
251
 
                                    stdout=subprocess.PIPE,
252
 
                                    stderr=subprocess.PIPE)
253
 
            ciphertext, err = proc.communicate(input=data)
254
 
        if proc.returncode != 0:
255
 
            raise PGPError(err)
256
 
        return ciphertext
257
 
 
258
 
    def decrypt(self, data, password):
259
 
        passphrase = self.password_encode(password)
260
 
        with tempfile.NamedTemporaryFile(
261
 
                dir=self.tempdir) as passfile:
262
 
            passfile.write(passphrase)
263
 
            passfile.flush()
264
 
            proc = subprocess.Popen([self.gpg, '--decrypt',
265
 
                                     '--passphrase-file',
266
 
                                     passfile.name]
267
 
                                    + self.gnupgargs,
268
 
                                    stdin=subprocess.PIPE,
269
 
                                    stdout=subprocess.PIPE,
270
 
                                    stderr=subprocess.PIPE)
271
 
            decrypted_plaintext, err = proc.communicate(input=data)
272
 
        if proc.returncode != 0:
273
 
            raise PGPError(err)
274
 
        return decrypted_plaintext
275
 
 
276
 
 
277
 
# Pretend that we have an Avahi module
278
 
class avahi(object):
279
 
    """This isn't so much a class as it is a module-like namespace."""
280
 
    IF_UNSPEC = -1               # avahi-common/address.h
281
 
    PROTO_UNSPEC = -1            # avahi-common/address.h
282
 
    PROTO_INET = 0               # avahi-common/address.h
283
 
    PROTO_INET6 = 1              # avahi-common/address.h
284
 
    DBUS_NAME = "org.freedesktop.Avahi"
285
 
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
 
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
 
    DBUS_PATH_SERVER = "/"
288
 
 
289
 
    @staticmethod
290
 
    def string_array_to_txt_array(t):
291
 
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
 
                           for s in t), signature="ay")
293
 
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
294
 
    ENTRY_GROUP_COLLISION = 3    # avahi-common/defs.h
295
 
    ENTRY_GROUP_FAILURE = 4      # avahi-common/defs.h
296
 
    SERVER_INVALID = 0           # avahi-common/defs.h
297
 
    SERVER_REGISTERING = 1       # avahi-common/defs.h
298
 
    SERVER_RUNNING = 2           # avahi-common/defs.h
299
 
    SERVER_COLLISION = 3         # avahi-common/defs.h
300
 
    SERVER_FAILURE = 4           # avahi-common/defs.h
301
 
 
 
82
        SO_BINDTODEVICE = None
 
83
 
 
84
 
 
85
version = "1.3.1"
 
86
 
 
87
#logger = logging.getLogger('mandos')
 
88
logger = logging.Logger('mandos')
 
89
syslogger = (logging.handlers.SysLogHandler
 
90
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
91
              address = str("/dev/log")))
 
92
syslogger.setFormatter(logging.Formatter
 
93
                       ('Mandos [%(process)d]: %(levelname)s:'
 
94
                        ' %(message)s'))
 
95
logger.addHandler(syslogger)
 
96
 
 
97
console = logging.StreamHandler()
 
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
 
99
                                       ' %(levelname)s:'
 
100
                                       ' %(message)s'))
 
101
logger.addHandler(console)
302
102
 
303
103
class AvahiError(Exception):
304
104
    def __init__(self, value, *args, **kwargs):
305
105
        self.value = value
306
 
        return super(AvahiError, self).__init__(value, *args,
307
 
                                                **kwargs)
308
 
 
 
106
        super(AvahiError, self).__init__(value, *args, **kwargs)
 
107
    def __unicode__(self):
 
108
        return unicode(repr(self.value))
309
109
 
310
110
class AvahiServiceError(AvahiError):
311
111
    pass
312
112
 
313
 
 
314
113
class AvahiGroupError(AvahiError):
315
114
    pass
316
115
 
317
116
 
318
117
class AvahiService(object):
319
118
    """An Avahi (Zeroconf) service.
320
 
 
 
119
    
321
120
    Attributes:
322
121
    interface: integer; avahi.IF_UNSPEC or an interface index.
323
122
               Used to optionally bind to the specified interface.
324
123
    name: string; Example: 'Mandos'
325
124
    type: string; Example: '_mandos._tcp'.
326
 
     See <https://www.iana.org/assignments/service-names-port-numbers>
 
125
                  See <http://www.dns-sd.org/ServiceTypes.html>
327
126
    port: integer; what port to announce
328
127
    TXT: list of strings; TXT record for the service
329
128
    domain: string; Domain to publish on, default to .local if empty.
335
134
    server: D-Bus Server
336
135
    bus: dbus.SystemBus()
337
136
    """
338
 
 
339
 
    def __init__(self,
340
 
                 interface=avahi.IF_UNSPEC,
341
 
                 name=None,
342
 
                 servicetype=None,
343
 
                 port=None,
344
 
                 TXT=None,
345
 
                 domain="",
346
 
                 host="",
347
 
                 max_renames=32768,
348
 
                 protocol=avahi.PROTO_UNSPEC,
349
 
                 bus=None):
 
137
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
 
138
                 servicetype = None, port = None, TXT = None,
 
139
                 domain = "", host = "", max_renames = 32768,
 
140
                 protocol = avahi.PROTO_UNSPEC, bus = None):
350
141
        self.interface = interface
351
142
        self.name = name
352
143
        self.type = servicetype
361
152
        self.server = None
362
153
        self.bus = bus
363
154
        self.entry_group_state_changed_match = None
364
 
 
365
 
    def rename(self, remove=True):
 
155
    def rename(self):
366
156
        """Derived from the Avahi example code"""
367
157
        if self.rename_count >= self.max_renames:
368
158
            logger.critical("No suitable Zeroconf service name found"
369
159
                            " after %i retries, exiting.",
370
160
                            self.rename_count)
371
161
            raise AvahiServiceError("Too many renames")
372
 
        self.name = str(
373
 
            self.server.GetAlternativeServiceName(self.name))
374
 
        self.rename_count += 1
 
162
        self.name = unicode(self.server.GetAlternativeServiceName(self.name))
375
163
        logger.info("Changing Zeroconf service name to %r ...",
376
164
                    self.name)
377
 
        if remove:
378
 
            self.remove()
 
165
        syslogger.setFormatter(logging.Formatter
 
166
                               ('Mandos (%s) [%%(process)d]:'
 
167
                                ' %%(levelname)s: %%(message)s'
 
168
                                % self.name))
 
169
        self.remove()
379
170
        try:
380
171
            self.add()
381
172
        except dbus.exceptions.DBusException as error:
382
 
            if (error.get_dbus_name()
383
 
                == "org.freedesktop.Avahi.CollisionError"):
384
 
                logger.info("Local Zeroconf service name collision.")
385
 
                return self.rename(remove=False)
386
 
            else:
387
 
                logger.critical("D-Bus Exception", exc_info=error)
388
 
                self.cleanup()
389
 
                os._exit(1)
390
 
 
 
173
            logger.critical("DBusException: %s", error)
 
174
            self.cleanup()
 
175
            os._exit(1)
 
176
        self.rename_count += 1
391
177
    def remove(self):
392
178
        """Derived from the Avahi example code"""
393
179
        if self.entry_group_state_changed_match is not None:
395
181
            self.entry_group_state_changed_match = None
396
182
        if self.group is not None:
397
183
            self.group.Reset()
398
 
 
399
184
    def add(self):
400
185
        """Derived from the Avahi example code"""
401
186
        self.remove()
406
191
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
407
192
        self.entry_group_state_changed_match = (
408
193
            self.group.connect_to_signal(
409
 
                'StateChanged', self.entry_group_state_changed))
 
194
                'StateChanged', self .entry_group_state_changed))
410
195
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
411
196
                     self.name, self.type)
412
197
        self.group.AddService(
418
203
            dbus.UInt16(self.port),
419
204
            avahi.string_array_to_txt_array(self.TXT))
420
205
        self.group.Commit()
421
 
 
422
206
    def entry_group_state_changed(self, state, error):
423
207
        """Derived from the Avahi example code"""
424
208
        logger.debug("Avahi entry group state change: %i", state)
425
 
 
 
209
        
426
210
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
211
            logger.debug("Zeroconf service established.")
428
212
        elif state == avahi.ENTRY_GROUP_COLLISION:
430
214
            self.rename()
431
215
        elif state == avahi.ENTRY_GROUP_FAILURE:
432
216
            logger.critical("Avahi: Error in group state changed %s",
433
 
                            str(error))
434
 
            raise AvahiGroupError("State changed: {!s}".format(error))
435
 
 
 
217
                            unicode(error))
 
218
            raise AvahiGroupError("State changed: %s"
 
219
                                  % unicode(error))
436
220
    def cleanup(self):
437
221
        """Derived from the Avahi example code"""
438
222
        if self.group is not None:
439
223
            try:
440
224
                self.group.Free()
441
225
            except (dbus.exceptions.UnknownMethodException,
442
 
                    dbus.exceptions.DBusException):
 
226
                    dbus.exceptions.DBusException) as e:
443
227
                pass
444
228
            self.group = None
445
229
        self.remove()
446
 
 
447
230
    def server_state_changed(self, state, error=None):
448
231
        """Derived from the Avahi example code"""
449
232
        logger.debug("Avahi server state change: %i", state)
450
 
        bad_states = {
451
 
            avahi.SERVER_INVALID: "Zeroconf server invalid",
452
 
            avahi.SERVER_REGISTERING: None,
453
 
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
 
            avahi.SERVER_FAILURE: "Zeroconf server failure",
455
 
        }
 
233
        bad_states = { avahi.SERVER_INVALID:
 
234
                           "Zeroconf server invalid",
 
235
                       avahi.SERVER_REGISTERING: None,
 
236
                       avahi.SERVER_COLLISION:
 
237
                           "Zeroconf server name collision",
 
238
                       avahi.SERVER_FAILURE:
 
239
                           "Zeroconf server failure" }
456
240
        if state in bad_states:
457
241
            if bad_states[state] is not None:
458
242
                if error is None:
461
245
                    logger.error(bad_states[state] + ": %r", error)
462
246
            self.cleanup()
463
247
        elif state == avahi.SERVER_RUNNING:
464
 
            try:
465
 
                self.add()
466
 
            except dbus.exceptions.DBusException as error:
467
 
                if (error.get_dbus_name()
468
 
                    == "org.freedesktop.Avahi.CollisionError"):
469
 
                    logger.info("Local Zeroconf service name"
470
 
                                " collision.")
471
 
                    return self.rename(remove=False)
472
 
                else:
473
 
                    logger.critical("D-Bus Exception", exc_info=error)
474
 
                    self.cleanup()
475
 
                    os._exit(1)
 
248
            self.add()
476
249
        else:
477
250
            if error is None:
478
251
                logger.debug("Unknown state: %r", state)
479
252
            else:
480
253
                logger.debug("Unknown state: %r: %r", state, error)
481
 
 
482
254
    def activate(self):
483
255
        """Derived from the Avahi example code"""
484
256
        if self.server is None:
488
260
                                    follow_name_owner_changes=True),
489
261
                avahi.DBUS_INTERFACE_SERVER)
490
262
        self.server.connect_to_signal("StateChanged",
491
 
                                      self.server_state_changed)
 
263
                                 self.server_state_changed)
492
264
        self.server_state_changed(self.server.GetState())
493
265
 
494
266
 
495
 
class AvahiServiceToSyslog(AvahiService):
496
 
    def rename(self, *args, **kwargs):
497
 
        """Add the new name to the syslog messages"""
498
 
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
 
        syslogger.setFormatter(logging.Formatter(
500
 
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
 
            .format(self.name)))
502
 
        return ret
503
 
 
504
 
 
505
 
# Pretend that we have a GnuTLS module
506
 
class gnutls(object):
507
 
    """This isn't so much a class as it is a module-like namespace."""
508
 
 
509
 
    library = ctypes.util.find_library("gnutls")
510
 
    if library is None:
511
 
        library = ctypes.util.find_library("gnutls-deb0")
512
 
    _library = ctypes.cdll.LoadLibrary(library)
513
 
    del library
514
 
 
515
 
    # Unless otherwise indicated, the constants and types below are
516
 
    # all from the gnutls/gnutls.h C header file.
517
 
 
518
 
    # Constants
519
 
    E_SUCCESS = 0
520
 
    E_INTERRUPTED = -52
521
 
    E_AGAIN = -28
522
 
    CRT_OPENPGP = 2
523
 
    CRT_RAWPK = 3
524
 
    CLIENT = 2
525
 
    SHUT_RDWR = 0
526
 
    CRD_CERTIFICATE = 1
527
 
    E_NO_CERTIFICATE_FOUND = -49
528
 
    X509_FMT_DER = 0
529
 
    NO_TICKETS = 1<<10
530
 
    ENABLE_RAWPK = 1<<18
531
 
    CTYPE_PEERS = 3
532
 
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
533
 
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
534
 
 
535
 
    # Types
536
 
    class session_int(ctypes.Structure):
537
 
        _fields_ = []
538
 
    session_t = ctypes.POINTER(session_int)
539
 
 
540
 
    class certificate_credentials_st(ctypes.Structure):
541
 
        _fields_ = []
542
 
    certificate_credentials_t = ctypes.POINTER(
543
 
        certificate_credentials_st)
544
 
    certificate_type_t = ctypes.c_int
545
 
 
546
 
    class datum_t(ctypes.Structure):
547
 
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
 
                    ('size', ctypes.c_uint)]
549
 
 
550
 
    class openpgp_crt_int(ctypes.Structure):
551
 
        _fields_ = []
552
 
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
 
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
554
 
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
 
    credentials_type_t = ctypes.c_int
556
 
    transport_ptr_t = ctypes.c_void_p
557
 
    close_request_t = ctypes.c_int
558
 
 
559
 
    # Exceptions
560
 
    class Error(Exception):
561
 
        def __init__(self, message=None, code=None, args=()):
562
 
            # Default usage is by a message string, but if a return
563
 
            # code is passed, convert it to a string with
564
 
            # gnutls.strerror()
565
 
            self.code = code
566
 
            if message is None and code is not None:
567
 
                message = gnutls.strerror(code)
568
 
            return super(gnutls.Error, self).__init__(
569
 
                message, *args)
570
 
 
571
 
    class CertificateSecurityError(Error):
572
 
        pass
573
 
 
574
 
    # Classes
575
 
    class Credentials(object):
576
 
        def __init__(self):
577
 
            self._c_object = gnutls.certificate_credentials_t()
578
 
            gnutls.certificate_allocate_credentials(
579
 
                ctypes.byref(self._c_object))
580
 
            self.type = gnutls.CRD_CERTIFICATE
581
 
 
582
 
        def __del__(self):
583
 
            gnutls.certificate_free_credentials(self._c_object)
584
 
 
585
 
    class ClientSession(object):
586
 
        def __init__(self, socket, credentials=None):
587
 
            self._c_object = gnutls.session_t()
588
 
            gnutls_flags = gnutls.CLIENT
589
 
            if gnutls.check_version("3.5.6"):
590
 
                gnutls_flags |= gnutls.NO_TICKETS
591
 
            if gnutls.has_rawpk:
592
 
                gnutls_flags |= gnutls.ENABLE_RAWPK
593
 
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
 
            del gnutls_flags
595
 
            gnutls.set_default_priority(self._c_object)
596
 
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
 
            gnutls.handshake_set_private_extensions(self._c_object,
598
 
                                                    True)
599
 
            self.socket = socket
600
 
            if credentials is None:
601
 
                credentials = gnutls.Credentials()
602
 
            gnutls.credentials_set(self._c_object, credentials.type,
603
 
                                   ctypes.cast(credentials._c_object,
604
 
                                               ctypes.c_void_p))
605
 
            self.credentials = credentials
606
 
 
607
 
        def __del__(self):
608
 
            gnutls.deinit(self._c_object)
609
 
 
610
 
        def handshake(self):
611
 
            return gnutls.handshake(self._c_object)
612
 
 
613
 
        def send(self, data):
614
 
            data = bytes(data)
615
 
            data_len = len(data)
616
 
            while data_len > 0:
617
 
                data_len -= gnutls.record_send(self._c_object,
618
 
                                               data[-data_len:],
619
 
                                               data_len)
620
 
 
621
 
        def bye(self):
622
 
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
 
 
624
 
    # Error handling functions
625
 
    def _error_code(result):
626
 
        """A function to raise exceptions on errors, suitable
627
 
        for the 'restype' attribute on ctypes functions"""
628
 
        if result >= 0:
629
 
            return result
630
 
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
 
            raise gnutls.CertificateSecurityError(code=result)
632
 
        raise gnutls.Error(code=result)
633
 
 
634
 
    def _retry_on_error(result, func, arguments):
635
 
        """A function to retry on some errors, suitable
636
 
        for the 'errcheck' attribute on ctypes functions"""
637
 
        while result < 0:
638
 
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
 
                return _error_code(result)
640
 
            result = func(*arguments)
641
 
        return result
642
 
 
643
 
    # Unless otherwise indicated, the function declarations below are
644
 
    # all from the gnutls/gnutls.h C header file.
645
 
 
646
 
    # Functions
647
 
    priority_set_direct = _library.gnutls_priority_set_direct
648
 
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
 
                                    ctypes.POINTER(ctypes.c_char_p)]
650
 
    priority_set_direct.restype = _error_code
651
 
 
652
 
    init = _library.gnutls_init
653
 
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
 
    init.restype = _error_code
655
 
 
656
 
    set_default_priority = _library.gnutls_set_default_priority
657
 
    set_default_priority.argtypes = [session_t]
658
 
    set_default_priority.restype = _error_code
659
 
 
660
 
    record_send = _library.gnutls_record_send
661
 
    record_send.argtypes = [session_t, ctypes.c_void_p,
662
 
                            ctypes.c_size_t]
663
 
    record_send.restype = ctypes.c_ssize_t
664
 
    record_send.errcheck = _retry_on_error
665
 
 
666
 
    certificate_allocate_credentials = (
667
 
        _library.gnutls_certificate_allocate_credentials)
668
 
    certificate_allocate_credentials.argtypes = [
669
 
        ctypes.POINTER(certificate_credentials_t)]
670
 
    certificate_allocate_credentials.restype = _error_code
671
 
 
672
 
    certificate_free_credentials = (
673
 
        _library.gnutls_certificate_free_credentials)
674
 
    certificate_free_credentials.argtypes = [
675
 
        certificate_credentials_t]
676
 
    certificate_free_credentials.restype = None
677
 
 
678
 
    handshake_set_private_extensions = (
679
 
        _library.gnutls_handshake_set_private_extensions)
680
 
    handshake_set_private_extensions.argtypes = [session_t,
681
 
                                                 ctypes.c_int]
682
 
    handshake_set_private_extensions.restype = None
683
 
 
684
 
    credentials_set = _library.gnutls_credentials_set
685
 
    credentials_set.argtypes = [session_t, credentials_type_t,
686
 
                                ctypes.c_void_p]
687
 
    credentials_set.restype = _error_code
688
 
 
689
 
    strerror = _library.gnutls_strerror
690
 
    strerror.argtypes = [ctypes.c_int]
691
 
    strerror.restype = ctypes.c_char_p
692
 
 
693
 
    certificate_type_get = _library.gnutls_certificate_type_get
694
 
    certificate_type_get.argtypes = [session_t]
695
 
    certificate_type_get.restype = _error_code
696
 
 
697
 
    certificate_get_peers = _library.gnutls_certificate_get_peers
698
 
    certificate_get_peers.argtypes = [session_t,
699
 
                                      ctypes.POINTER(ctypes.c_uint)]
700
 
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
 
 
702
 
    global_set_log_level = _library.gnutls_global_set_log_level
703
 
    global_set_log_level.argtypes = [ctypes.c_int]
704
 
    global_set_log_level.restype = None
705
 
 
706
 
    global_set_log_function = _library.gnutls_global_set_log_function
707
 
    global_set_log_function.argtypes = [log_func]
708
 
    global_set_log_function.restype = None
709
 
 
710
 
    deinit = _library.gnutls_deinit
711
 
    deinit.argtypes = [session_t]
712
 
    deinit.restype = None
713
 
 
714
 
    handshake = _library.gnutls_handshake
715
 
    handshake.argtypes = [session_t]
716
 
    handshake.restype = _error_code
717
 
    handshake.errcheck = _retry_on_error
718
 
 
719
 
    transport_set_ptr = _library.gnutls_transport_set_ptr
720
 
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
 
    transport_set_ptr.restype = None
722
 
 
723
 
    bye = _library.gnutls_bye
724
 
    bye.argtypes = [session_t, close_request_t]
725
 
    bye.restype = _error_code
726
 
    bye.errcheck = _retry_on_error
727
 
 
728
 
    check_version = _library.gnutls_check_version
729
 
    check_version.argtypes = [ctypes.c_char_p]
730
 
    check_version.restype = ctypes.c_char_p
731
 
 
732
 
    _need_version = b"3.3.0"
733
 
    if check_version(_need_version) is None:
734
 
        raise self.Error("Needs GnuTLS {} or later"
735
 
                         .format(_need_version))
736
 
 
737
 
    _tls_rawpk_version = b"3.6.6"
738
 
    has_rawpk = bool(check_version(_tls_rawpk_version))
739
 
 
740
 
    if has_rawpk:
741
 
        # Types
742
 
        class pubkey_st(ctypes.Structure):
743
 
            _fields = []
744
 
        pubkey_t = ctypes.POINTER(pubkey_st)
745
 
 
746
 
        x509_crt_fmt_t = ctypes.c_int
747
 
 
748
 
        # All the function declarations below are from gnutls/abstract.h
749
 
        pubkey_init = _library.gnutls_pubkey_init
750
 
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
 
        pubkey_init.restype = _error_code
752
 
 
753
 
        pubkey_import = _library.gnutls_pubkey_import
754
 
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
 
                                  x509_crt_fmt_t]
756
 
        pubkey_import.restype = _error_code
757
 
 
758
 
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
 
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
 
                                      ctypes.POINTER(ctypes.c_ubyte),
761
 
                                      ctypes.POINTER(ctypes.c_size_t)]
762
 
        pubkey_get_key_id.restype = _error_code
763
 
 
764
 
        pubkey_deinit = _library.gnutls_pubkey_deinit
765
 
        pubkey_deinit.argtypes = [pubkey_t]
766
 
        pubkey_deinit.restype = None
767
 
    else:
768
 
        # All the function declarations below are from gnutls/openpgp.h
769
 
 
770
 
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
 
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
 
        openpgp_crt_init.restype = _error_code
773
 
 
774
 
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
 
        openpgp_crt_import.argtypes = [openpgp_crt_t,
776
 
                                       ctypes.POINTER(datum_t),
777
 
                                       openpgp_crt_fmt_t]
778
 
        openpgp_crt_import.restype = _error_code
779
 
 
780
 
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
 
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
 
                                            ctypes.POINTER(ctypes.c_uint)]
783
 
        openpgp_crt_verify_self.restype = _error_code
784
 
 
785
 
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
 
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
 
        openpgp_crt_deinit.restype = None
788
 
 
789
 
        openpgp_crt_get_fingerprint = (
790
 
            _library.gnutls_openpgp_crt_get_fingerprint)
791
 
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
 
                                                ctypes.c_void_p,
793
 
                                                ctypes.POINTER(
794
 
                                                    ctypes.c_size_t)]
795
 
        openpgp_crt_get_fingerprint.restype = _error_code
796
 
 
797
 
    if check_version("3.6.4"):
798
 
        certificate_type_get2 = _library.gnutls_certificate_type_get2
799
 
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
 
        certificate_type_get2.restype = _error_code
801
 
 
802
 
    # Remove non-public functions
803
 
    del _error_code, _retry_on_error
804
 
 
805
 
 
806
 
def call_pipe(connection,       # : multiprocessing.Connection
807
 
              func, *args, **kwargs):
808
 
    """This function is meant to be called by multiprocessing.Process
809
 
 
810
 
    This function runs func(*args, **kwargs), and writes the resulting
811
 
    return value on the provided multiprocessing.Connection.
812
 
    """
813
 
    connection.send(func(*args, **kwargs))
814
 
    connection.close()
815
 
 
816
 
 
817
267
class Client(object):
818
268
    """A representation of a client host served by this server.
819
 
 
 
269
    
820
270
    Attributes:
821
 
    approved:   bool(); 'None' if not yet approved/disapproved
 
271
    _approved:   bool(); 'None' if not yet approved/disapproved
822
272
    approval_delay: datetime.timedelta(); Time to wait for approval
823
273
    approval_duration: datetime.timedelta(); Duration of one approval
824
274
    checker:    subprocess.Popen(); a running checker process used
825
275
                                    to see if the client lives.
826
276
                                    'None' if no process is running.
827
 
    checker_callback_tag: a GLib event source tag, or None
 
277
    checker_callback_tag: a gobject event source tag, or None
828
278
    checker_command: string; External command which is run to check
829
279
                     if client lives.  %() expansions are done at
830
280
                     runtime with vars(self) as dict, so that for
831
281
                     instance %(name)s can be used in the command.
832
 
    checker_initiator_tag: a GLib event source tag, or None
 
282
    checker_initiator_tag: a gobject event source tag, or None
833
283
    created:    datetime.datetime(); (UTC) object creation
834
 
    client_structure: Object describing what attributes a client has
835
 
                      and is used for storing the client at exit
836
284
    current_checker_command: string; current running checker_command
837
 
    disable_initiator_tag: a GLib event source tag, or None
 
285
    disable_hook:  If set, called by disable() as disable_hook(self)
 
286
    disable_initiator_tag: a gobject event source tag, or None
838
287
    enabled:    bool()
839
288
    fingerprint: string (40 or 32 hexadecimal digits); used to
840
 
                 uniquely identify an OpenPGP client
841
 
    key_id: string (64 hexadecimal digits); used to uniquely identify
842
 
            a client using raw public keys
 
289
                 uniquely identify the client
843
290
    host:       string; available for use by the checker command
844
291
    interval:   datetime.timedelta(); How often to start a new checker
845
292
    last_approval_request: datetime.datetime(); (UTC) or None
846
293
    last_checked_ok: datetime.datetime(); (UTC) or None
847
 
    last_checker_status: integer between 0 and 255 reflecting exit
848
 
                         status of last checker. -1 reflects crashed
849
 
                         checker, -2 means no checker completed yet.
850
 
    last_checker_signal: The signal which killed the last checker, if
851
 
                         last_checker_status is -1
852
 
    last_enabled: datetime.datetime(); (UTC) or None
 
294
    last_enabled: datetime.datetime(); (UTC)
853
295
    name:       string; from the config file, used in log messages and
854
296
                        D-Bus identifiers
855
297
    secret:     bytestring; sent verbatim (over TLS) to client
856
298
    timeout:    datetime.timedelta(); How long from last_checked_ok
857
299
                                      until this client is disabled
858
 
    extended_timeout:   extra long timeout when secret has been sent
859
300
    runtime_expansions: Allowed attributes for runtime expansion.
860
 
    expires:    datetime.datetime(); time (UTC) when a client will be
861
 
                disabled, or None
862
 
    server_settings: The server_settings dict from main()
863
301
    """
864
 
 
 
302
    
865
303
    runtime_expansions = ("approval_delay", "approval_duration",
866
 
                          "created", "enabled", "expires", "key_id",
867
 
                          "fingerprint", "host", "interval",
868
 
                          "last_approval_request", "last_checked_ok",
 
304
                          "created", "enabled", "fingerprint",
 
305
                          "host", "interval", "last_checked_ok",
869
306
                          "last_enabled", "name", "timeout")
870
 
    client_defaults = {
871
 
        "timeout": "PT5M",
872
 
        "extended_timeout": "PT15M",
873
 
        "interval": "PT2M",
874
 
        "checker": "fping -q -- %%(host)s",
875
 
        "host": "",
876
 
        "approval_delay": "PT0S",
877
 
        "approval_duration": "PT1S",
878
 
        "approved_by_default": "True",
879
 
        "enabled": "True",
880
 
    }
881
 
 
 
307
    
882
308
    @staticmethod
883
 
    def config_parser(config):
884
 
        """Construct a new dict of client settings of this form:
885
 
        { client_name: {setting_name: value, ...}, ...}
886
 
        with exceptions for any special settings as defined above.
887
 
        NOTE: Must be a pure function. Must return the same result
888
 
        value given the same arguments.
889
 
        """
890
 
        settings = {}
891
 
        for client_name in config.sections():
892
 
            section = dict(config.items(client_name))
893
 
            client = settings[client_name] = {}
894
 
 
895
 
            client["host"] = section["host"]
896
 
            # Reformat values from string types to Python types
897
 
            client["approved_by_default"] = config.getboolean(
898
 
                client_name, "approved_by_default")
899
 
            client["enabled"] = config.getboolean(client_name,
900
 
                                                  "enabled")
901
 
 
902
 
            # Uppercase and remove spaces from key_id and fingerprint
903
 
            # for later comparison purposes with return value from the
904
 
            # key_id() and fingerprint() functions
905
 
            client["key_id"] = (section.get("key_id", "").upper()
906
 
                                .replace(" ", ""))
907
 
            client["fingerprint"] = (section["fingerprint"].upper()
908
 
                                     .replace(" ", ""))
909
 
            if "secret" in section:
910
 
                client["secret"] = codecs.decode(section["secret"]
911
 
                                                 .encode("utf-8"),
912
 
                                                 "base64")
913
 
            elif "secfile" in section:
914
 
                with open(os.path.expanduser(os.path.expandvars
915
 
                                             (section["secfile"])),
916
 
                          "rb") as secfile:
917
 
                    client["secret"] = secfile.read()
918
 
            else:
919
 
                raise TypeError("No secret or secfile for section {}"
920
 
                                .format(section))
921
 
            client["timeout"] = string_to_delta(section["timeout"])
922
 
            client["extended_timeout"] = string_to_delta(
923
 
                section["extended_timeout"])
924
 
            client["interval"] = string_to_delta(section["interval"])
925
 
            client["approval_delay"] = string_to_delta(
926
 
                section["approval_delay"])
927
 
            client["approval_duration"] = string_to_delta(
928
 
                section["approval_duration"])
929
 
            client["checker_command"] = section["checker"]
930
 
            client["last_approval_request"] = None
931
 
            client["last_checked_ok"] = None
932
 
            client["last_checker_status"] = -2
933
 
 
934
 
        return settings
935
 
 
936
 
    def __init__(self, settings, name=None, server_settings=None):
 
309
    def _timedelta_to_milliseconds(td):
 
310
        "Convert a datetime.timedelta() to milliseconds"
 
311
        return ((td.days * 24 * 60 * 60 * 1000)
 
312
                + (td.seconds * 1000)
 
313
                + (td.microseconds // 1000))
 
314
    
 
315
    def timeout_milliseconds(self):
 
316
        "Return the 'timeout' attribute in milliseconds"
 
317
        return self._timedelta_to_milliseconds(self.timeout)
 
318
    
 
319
    def interval_milliseconds(self):
 
320
        "Return the 'interval' attribute in milliseconds"
 
321
        return self._timedelta_to_milliseconds(self.interval)
 
322
 
 
323
    def approval_delay_milliseconds(self):
 
324
        return self._timedelta_to_milliseconds(self.approval_delay)
 
325
    
 
326
    def __init__(self, name = None, disable_hook=None, config=None):
 
327
        """Note: the 'checker' key in 'config' sets the
 
328
        'checker_command' attribute and *not* the 'checker'
 
329
        attribute."""
937
330
        self.name = name
938
 
        if server_settings is None:
939
 
            server_settings = {}
940
 
        self.server_settings = server_settings
941
 
        # adding all client settings
942
 
        for setting, value in settings.items():
943
 
            setattr(self, setting, value)
944
 
 
945
 
        if self.enabled:
946
 
            if not hasattr(self, "last_enabled"):
947
 
                self.last_enabled = datetime.datetime.utcnow()
948
 
            if not hasattr(self, "expires"):
949
 
                self.expires = (datetime.datetime.utcnow()
950
 
                                + self.timeout)
951
 
        else:
952
 
            self.last_enabled = None
953
 
            self.expires = None
954
 
 
 
331
        if config is None:
 
332
            config = {}
955
333
        logger.debug("Creating client %r", self.name)
956
 
        logger.debug("  Key ID: %s", self.key_id)
 
334
        # Uppercase and remove spaces from fingerprint for later
 
335
        # comparison purposes with return value from the fingerprint()
 
336
        # function
 
337
        self.fingerprint = (config["fingerprint"].upper()
 
338
                            .replace(" ", ""))
957
339
        logger.debug("  Fingerprint: %s", self.fingerprint)
958
 
        self.created = settings.get("created",
959
 
                                    datetime.datetime.utcnow())
960
 
 
961
 
        # attributes specific for this server instance
 
340
        if "secret" in config:
 
341
            self.secret = config["secret"].decode("base64")
 
342
        elif "secfile" in config:
 
343
            with open(os.path.expanduser(os.path.expandvars
 
344
                                         (config["secfile"])),
 
345
                      "rb") as secfile:
 
346
                self.secret = secfile.read()
 
347
        else:
 
348
            raise TypeError("No secret or secfile for client %s"
 
349
                            % self.name)
 
350
        self.host = config.get("host", "")
 
351
        self.created = datetime.datetime.utcnow()
 
352
        self.enabled = False
 
353
        self.last_approval_request = None
 
354
        self.last_enabled = None
 
355
        self.last_checked_ok = None
 
356
        self.timeout = string_to_delta(config["timeout"])
 
357
        self.interval = string_to_delta(config["interval"])
 
358
        self.disable_hook = disable_hook
962
359
        self.checker = None
963
360
        self.checker_initiator_tag = None
964
361
        self.disable_initiator_tag = None
965
362
        self.checker_callback_tag = None
 
363
        self.checker_command = config["checker"]
966
364
        self.current_checker_command = None
967
 
        self.approved = None
 
365
        self.last_connect = None
 
366
        self._approved = None
 
367
        self.approved_by_default = config.get("approved_by_default",
 
368
                                              True)
968
369
        self.approvals_pending = 0
969
 
        self.changedstate = multiprocessing_manager.Condition(
970
 
            multiprocessing_manager.Lock())
971
 
        self.client_structure = [attr
972
 
                                 for attr in self.__dict__.keys()
973
 
                                 if not attr.startswith("_")]
974
 
        self.client_structure.append("client_structure")
975
 
 
976
 
        for name, t in inspect.getmembers(
977
 
                type(self), lambda obj: isinstance(obj, property)):
978
 
            if not name.startswith("_"):
979
 
                self.client_structure.append(name)
980
 
 
981
 
    # Send notice to process children that client state has changed
 
370
        self.approval_delay = string_to_delta(
 
371
            config["approval_delay"])
 
372
        self.approval_duration = string_to_delta(
 
373
            config["approval_duration"])
 
374
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
 
375
    
982
376
    def send_changedstate(self):
983
 
        with self.changedstate:
984
 
            self.changedstate.notify_all()
985
 
 
 
377
        self.changedstate.acquire()
 
378
        self.changedstate.notify_all()
 
379
        self.changedstate.release()
 
380
        
986
381
    def enable(self):
987
382
        """Start this client's checker and timeout hooks"""
988
383
        if getattr(self, "enabled", False):
989
384
            # Already enabled
990
385
            return
991
 
        self.expires = datetime.datetime.utcnow() + self.timeout
992
 
        self.enabled = True
 
386
        self.send_changedstate()
993
387
        self.last_enabled = datetime.datetime.utcnow()
994
 
        self.init_checker()
995
 
        self.send_changedstate()
996
 
 
 
388
        # Schedule a new checker to be started an 'interval' from now,
 
389
        # and every interval from then on.
 
390
        self.checker_initiator_tag = (gobject.timeout_add
 
391
                                      (self.interval_milliseconds(),
 
392
                                       self.start_checker))
 
393
        # Schedule a disable() when 'timeout' has passed
 
394
        self.disable_initiator_tag = (gobject.timeout_add
 
395
                                   (self.timeout_milliseconds(),
 
396
                                    self.disable))
 
397
        self.enabled = True
 
398
        # Also start a new checker *right now*.
 
399
        self.start_checker()
 
400
    
997
401
    def disable(self, quiet=True):
998
402
        """Disable this client."""
999
403
        if not getattr(self, "enabled", False):
1000
404
            return False
1001
405
        if not quiet:
 
406
            self.send_changedstate()
 
407
        if not quiet:
1002
408
            logger.info("Disabling client %s", self.name)
1003
 
        if getattr(self, "disable_initiator_tag", None) is not None:
1004
 
            GLib.source_remove(self.disable_initiator_tag)
 
409
        if getattr(self, "disable_initiator_tag", False):
 
410
            gobject.source_remove(self.disable_initiator_tag)
1005
411
            self.disable_initiator_tag = None
1006
 
        self.expires = None
1007
 
        if getattr(self, "checker_initiator_tag", None) is not None:
1008
 
            GLib.source_remove(self.checker_initiator_tag)
 
412
        if getattr(self, "checker_initiator_tag", False):
 
413
            gobject.source_remove(self.checker_initiator_tag)
1009
414
            self.checker_initiator_tag = None
1010
415
        self.stop_checker()
 
416
        if self.disable_hook:
 
417
            self.disable_hook(self)
1011
418
        self.enabled = False
1012
 
        if not quiet:
1013
 
            self.send_changedstate()
1014
 
        # Do not run this again if called by a GLib.timeout_add
 
419
        # Do not run this again if called by a gobject.timeout_add
1015
420
        return False
1016
 
 
 
421
    
1017
422
    def __del__(self):
 
423
        self.disable_hook = None
1018
424
        self.disable()
1019
 
 
1020
 
    def init_checker(self):
1021
 
        # Schedule a new checker to be started an 'interval' from now,
1022
 
        # and every interval from then on.
1023
 
        if self.checker_initiator_tag is not None:
1024
 
            GLib.source_remove(self.checker_initiator_tag)
1025
 
        self.checker_initiator_tag = GLib.timeout_add(
1026
 
            int(self.interval.total_seconds() * 1000),
1027
 
            self.start_checker)
1028
 
        # Schedule a disable() when 'timeout' has passed
1029
 
        if self.disable_initiator_tag is not None:
1030
 
            GLib.source_remove(self.disable_initiator_tag)
1031
 
        self.disable_initiator_tag = GLib.timeout_add(
1032
 
            int(self.timeout.total_seconds() * 1000), self.disable)
1033
 
        # Also start a new checker *right now*.
1034
 
        self.start_checker()
1035
 
 
1036
 
    def checker_callback(self, source, condition, connection,
1037
 
                         command):
 
425
    
 
426
    def checker_callback(self, pid, condition, command):
1038
427
        """The checker has completed, so take appropriate actions."""
1039
428
        self.checker_callback_tag = None
1040
429
        self.checker = None
1041
 
        # Read return code from connection (see call_pipe)
1042
 
        returncode = connection.recv()
1043
 
        connection.close()
1044
 
 
1045
 
        if returncode >= 0:
1046
 
            self.last_checker_status = returncode
1047
 
            self.last_checker_signal = None
1048
 
            if self.last_checker_status == 0:
 
430
        if os.WIFEXITED(condition):
 
431
            exitstatus = os.WEXITSTATUS(condition)
 
432
            if exitstatus == 0:
1049
433
                logger.info("Checker for %(name)s succeeded",
1050
434
                            vars(self))
1051
435
                self.checked_ok()
1052
436
            else:
1053
 
                logger.info("Checker for %(name)s failed", vars(self))
 
437
                logger.info("Checker for %(name)s failed",
 
438
                            vars(self))
1054
439
        else:
1055
 
            self.last_checker_status = -1
1056
 
            self.last_checker_signal = -returncode
1057
440
            logger.warning("Checker for %(name)s crashed?",
1058
441
                           vars(self))
1059
 
        return False
1060
 
 
 
442
    
1061
443
    def checked_ok(self):
1062
 
        """Assert that the client has been seen, alive and well."""
 
444
        """Bump up the timeout for this client.
 
445
        
 
446
        This should only be called when the client has been seen,
 
447
        alive and well.
 
448
        """
1063
449
        self.last_checked_ok = datetime.datetime.utcnow()
1064
 
        self.last_checker_status = 0
1065
 
        self.last_checker_signal = None
1066
 
        self.bump_timeout()
1067
 
 
1068
 
    def bump_timeout(self, timeout=None):
1069
 
        """Bump up the timeout for this client."""
1070
 
        if timeout is None:
1071
 
            timeout = self.timeout
1072
 
        if self.disable_initiator_tag is not None:
1073
 
            GLib.source_remove(self.disable_initiator_tag)
1074
 
            self.disable_initiator_tag = None
1075
 
        if getattr(self, "enabled", False):
1076
 
            self.disable_initiator_tag = GLib.timeout_add(
1077
 
                int(timeout.total_seconds() * 1000), self.disable)
1078
 
            self.expires = datetime.datetime.utcnow() + timeout
1079
 
 
 
450
        gobject.source_remove(self.disable_initiator_tag)
 
451
        self.disable_initiator_tag = (gobject.timeout_add
 
452
                                      (self.timeout_milliseconds(),
 
453
                                       self.disable))
 
454
    
1080
455
    def need_approval(self):
1081
456
        self.last_approval_request = datetime.datetime.utcnow()
1082
 
 
 
457
    
1083
458
    def start_checker(self):
1084
459
        """Start a new checker subprocess if one is not running.
1085
 
 
 
460
        
1086
461
        If a checker already exists, leave it running and do
1087
462
        nothing."""
1088
463
        # The reason for not killing a running checker is that if we
1089
 
        # did that, and if a checker (for some reason) started running
1090
 
        # slowly and taking more than 'interval' time, then the client
1091
 
        # would inevitably timeout, since no checker would get a
1092
 
        # chance to run to completion.  If we instead leave running
 
464
        # did that, then if a checker (for some reason) started
 
465
        # running slowly and taking more than 'interval' time, the
 
466
        # client would inevitably timeout, since no checker would get
 
467
        # a chance to run to completion.  If we instead leave running
1093
468
        # checkers alone, the checker would have to take more time
1094
469
        # than 'timeout' for the client to be disabled, which is as it
1095
470
        # should be.
1096
 
 
1097
 
        if self.checker is not None and not self.checker.is_alive():
1098
 
            logger.warning("Checker was not alive; joining")
1099
 
            self.checker.join()
1100
 
            self.checker = None
 
471
        
 
472
        # If a checker exists, make sure it is not a zombie
 
473
        try:
 
474
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
475
        except (AttributeError, OSError) as error:
 
476
            if (isinstance(error, OSError)
 
477
                and error.errno != errno.ECHILD):
 
478
                raise error
 
479
        else:
 
480
            if pid:
 
481
                logger.warning("Checker was a zombie")
 
482
                gobject.source_remove(self.checker_callback_tag)
 
483
                self.checker_callback(pid, status,
 
484
                                      self.current_checker_command)
1101
485
        # Start a new checker if needed
1102
486
        if self.checker is None:
1103
 
            # Escape attributes for the shell
1104
 
            escaped_attrs = {
1105
 
                attr: re.escape(str(getattr(self, attr)))
1106
 
                for attr in self.runtime_expansions}
1107
487
            try:
1108
 
                command = self.checker_command % escaped_attrs
1109
 
            except TypeError as error:
1110
 
                logger.error('Could not format string "%s"',
1111
 
                             self.checker_command,
1112
 
                             exc_info=error)
1113
 
                return True     # Try again later
 
488
                # In case checker_command has exactly one % operator
 
489
                command = self.checker_command % self.host
 
490
            except TypeError:
 
491
                # Escape attributes for the shell
 
492
                escaped_attrs = dict(
 
493
                    (attr,
 
494
                     re.escape(unicode(str(getattr(self, attr, "")),
 
495
                                       errors=
 
496
                                       'replace')))
 
497
                    for attr in
 
498
                    self.runtime_expansions)
 
499
 
 
500
                try:
 
501
                    command = self.checker_command % escaped_attrs
 
502
                except TypeError as error:
 
503
                    logger.error('Could not format string "%s":'
 
504
                                 ' %s', self.checker_command, error)
 
505
                    return True # Try again later
1114
506
            self.current_checker_command = command
1115
 
            logger.info("Starting checker %r for %s", command,
1116
 
                        self.name)
1117
 
            # We don't need to redirect stdout and stderr, since
1118
 
            # in normal mode, that is already done by daemon(),
1119
 
            # and in debug mode we don't want to.  (Stdin is
1120
 
            # always replaced by /dev/null.)
1121
 
            # The exception is when not debugging but nevertheless
1122
 
            # running in the foreground; use the previously
1123
 
            # created wnull.
1124
 
            popen_args = {"close_fds": True,
1125
 
                          "shell": True,
1126
 
                          "cwd": "/"}
1127
 
            if (not self.server_settings["debug"]
1128
 
                and self.server_settings["foreground"]):
1129
 
                popen_args.update({"stdout": wnull,
1130
 
                                   "stderr": wnull})
1131
 
            pipe = multiprocessing.Pipe(duplex=False)
1132
 
            self.checker = multiprocessing.Process(
1133
 
                target=call_pipe,
1134
 
                args=(pipe[1], subprocess.call, command),
1135
 
                kwargs=popen_args)
1136
 
            self.checker.start()
1137
 
            self.checker_callback_tag = GLib.io_add_watch(
1138
 
                pipe[0].fileno(), GLib.IO_IN,
1139
 
                self.checker_callback, pipe[0], command)
1140
 
        # Re-run this periodically if run by GLib.timeout_add
 
507
            try:
 
508
                logger.info("Starting checker %r for %s",
 
509
                            command, self.name)
 
510
                # We don't need to redirect stdout and stderr, since
 
511
                # in normal mode, that is already done by daemon(),
 
512
                # and in debug mode we don't want to.  (Stdin is
 
513
                # always replaced by /dev/null.)
 
514
                self.checker = subprocess.Popen(command,
 
515
                                                close_fds=True,
 
516
                                                shell=True, cwd="/")
 
517
                self.checker_callback_tag = (gobject.child_watch_add
 
518
                                             (self.checker.pid,
 
519
                                              self.checker_callback,
 
520
                                              data=command))
 
521
                # The checker may have completed before the gobject
 
522
                # watch was added.  Check for this.
 
523
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
524
                if pid:
 
525
                    gobject.source_remove(self.checker_callback_tag)
 
526
                    self.checker_callback(pid, status, command)
 
527
            except OSError as error:
 
528
                logger.error("Failed to start subprocess: %s",
 
529
                             error)
 
530
        # Re-run this periodically if run by gobject.timeout_add
1141
531
        return True
1142
 
 
 
532
    
1143
533
    def stop_checker(self):
1144
534
        """Force the checker process, if any, to stop."""
1145
535
        if self.checker_callback_tag:
1146
 
            GLib.source_remove(self.checker_callback_tag)
 
536
            gobject.source_remove(self.checker_callback_tag)
1147
537
            self.checker_callback_tag = None
1148
538
        if getattr(self, "checker", None) is None:
1149
539
            return
1150
540
        logger.debug("Stopping checker for %(name)s", vars(self))
1151
 
        self.checker.terminate()
 
541
        try:
 
542
            os.kill(self.checker.pid, signal.SIGTERM)
 
543
            #time.sleep(0.5)
 
544
            #if self.checker.poll() is None:
 
545
            #    os.kill(self.checker.pid, signal.SIGKILL)
 
546
        except OSError as error:
 
547
            if error.errno != errno.ESRCH: # No such process
 
548
                raise
1152
549
        self.checker = None
1153
550
 
1154
 
 
1155
 
def dbus_service_property(dbus_interface,
1156
 
                          signature="v",
1157
 
                          access="readwrite",
1158
 
                          byte_arrays=False):
 
551
def dbus_service_property(dbus_interface, signature="v",
 
552
                          access="readwrite", byte_arrays=False):
1159
553
    """Decorators for marking methods of a DBusObjectWithProperties to
1160
554
    become properties on the D-Bus.
1161
 
 
 
555
    
1162
556
    The decorated method will be called with no arguments by "Get"
1163
557
    and with one argument by "Set".
1164
 
 
 
558
    
1165
559
    The parameters, where they are supported, are the same as
1166
560
    dbus.service.method, except there is only "signature", since the
1167
561
    type from Get() and the type sent to Set() is the same.
1170
564
    # "Set" method, so we fail early here:
1171
565
    if byte_arrays and signature != "ay":
1172
566
        raise ValueError("Byte arrays not supported for non-'ay'"
1173
 
                         " signature {!r}".format(signature))
1174
 
 
 
567
                         " signature %r" % signature)
1175
568
    def decorator(func):
1176
569
        func._dbus_is_property = True
1177
570
        func._dbus_interface = dbus_interface
1180
573
        func._dbus_name = func.__name__
1181
574
        if func._dbus_name.endswith("_dbus_property"):
1182
575
            func._dbus_name = func._dbus_name[:-14]
1183
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
 
        return func
1185
 
 
1186
 
    return decorator
1187
 
 
1188
 
 
1189
 
def dbus_interface_annotations(dbus_interface):
1190
 
    """Decorator for marking functions returning interface annotations
1191
 
 
1192
 
    Usage:
1193
 
 
1194
 
    @dbus_interface_annotations("org.example.Interface")
1195
 
    def _foo(self):  # Function name does not matter
1196
 
        return {"org.freedesktop.DBus.Deprecated": "true",
1197
 
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
 
                    "false"}
1199
 
    """
1200
 
 
1201
 
    def decorator(func):
1202
 
        func._dbus_is_interface = True
1203
 
        func._dbus_interface = dbus_interface
1204
 
        func._dbus_name = dbus_interface
1205
 
        return func
1206
 
 
1207
 
    return decorator
1208
 
 
1209
 
 
1210
 
def dbus_annotations(annotations):
1211
 
    """Decorator to annotate D-Bus methods, signals or properties
1212
 
    Usage:
1213
 
 
1214
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
 
                       "org.freedesktop.DBus.Property."
1216
 
                       "EmitsChangedSignal": "false"})
1217
 
    @dbus_service_property("org.example.Interface", signature="b",
1218
 
                           access="r")
1219
 
    def Property_dbus_property(self):
1220
 
        return dbus.Boolean(False)
1221
 
 
1222
 
    See also the DBusObjectWithAnnotations class.
1223
 
    """
1224
 
 
1225
 
    def decorator(func):
1226
 
        func._dbus_annotations = annotations
1227
 
        return func
1228
 
 
 
576
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
577
        return func
1229
578
    return decorator
1230
579
 
1231
580
 
1232
581
class DBusPropertyException(dbus.exceptions.DBusException):
1233
582
    """A base class for D-Bus property-related exceptions
1234
583
    """
1235
 
    pass
 
584
    def __unicode__(self):
 
585
        return unicode(str(self))
1236
586
 
1237
587
 
1238
588
class DBusPropertyAccessException(DBusPropertyException):
1247
597
    pass
1248
598
 
1249
599
 
1250
 
class DBusObjectWithAnnotations(dbus.service.Object):
1251
 
    """A D-Bus object with annotations.
1252
 
 
1253
 
    Classes inheriting from this can use the dbus_annotations
1254
 
    decorator to add annotations to methods or signals.
1255
 
    """
1256
 
 
1257
 
    @staticmethod
1258
 
    def _is_dbus_thing(thing):
1259
 
        """Returns a function testing if an attribute is a D-Bus thing
1260
 
 
1261
 
        If called like _is_dbus_thing("method") it returns a function
1262
 
        suitable for use as predicate to inspect.getmembers().
1263
 
        """
1264
 
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
 
                                   False)
1266
 
 
1267
 
    def _get_all_dbus_things(self, thing):
1268
 
        """Returns a generator of (name, attribute) pairs
1269
 
        """
1270
 
        return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
 
                 athing.__get__(self))
1272
 
                for cls in self.__class__.__mro__
1273
 
                for name, athing in
1274
 
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
 
 
1276
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
 
                         out_signature="s",
1278
 
                         path_keyword='object_path',
1279
 
                         connection_keyword='connection')
1280
 
    def Introspect(self, object_path, connection):
1281
 
        """Overloading of standard D-Bus method.
1282
 
 
1283
 
        Inserts annotation tags on methods and signals.
1284
 
        """
1285
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
 
                                                   connection)
1287
 
        try:
1288
 
            document = xml.dom.minidom.parseString(xmlstring)
1289
 
 
1290
 
            for if_tag in document.getElementsByTagName("interface"):
1291
 
                # Add annotation tags
1292
 
                for typ in ("method", "signal"):
1293
 
                    for tag in if_tag.getElementsByTagName(typ):
1294
 
                        annots = dict()
1295
 
                        for name, prop in (self.
1296
 
                                           _get_all_dbus_things(typ)):
1297
 
                            if (name == tag.getAttribute("name")
1298
 
                                and prop._dbus_interface
1299
 
                                == if_tag.getAttribute("name")):
1300
 
                                annots.update(getattr(
1301
 
                                    prop, "_dbus_annotations", {}))
1302
 
                        for name, value in annots.items():
1303
 
                            ann_tag = document.createElement(
1304
 
                                "annotation")
1305
 
                            ann_tag.setAttribute("name", name)
1306
 
                            ann_tag.setAttribute("value", value)
1307
 
                            tag.appendChild(ann_tag)
1308
 
                # Add interface annotation tags
1309
 
                for annotation, value in dict(
1310
 
                    itertools.chain.from_iterable(
1311
 
                        annotations().items()
1312
 
                        for name, annotations
1313
 
                        in self._get_all_dbus_things("interface")
1314
 
                        if name == if_tag.getAttribute("name")
1315
 
                        )).items():
1316
 
                    ann_tag = document.createElement("annotation")
1317
 
                    ann_tag.setAttribute("name", annotation)
1318
 
                    ann_tag.setAttribute("value", value)
1319
 
                    if_tag.appendChild(ann_tag)
1320
 
                # Fix argument name for the Introspect method itself
1321
 
                if (if_tag.getAttribute("name")
1322
 
                    == dbus.INTROSPECTABLE_IFACE):
1323
 
                    for cn in if_tag.getElementsByTagName("method"):
1324
 
                        if cn.getAttribute("name") == "Introspect":
1325
 
                            for arg in cn.getElementsByTagName("arg"):
1326
 
                                if (arg.getAttribute("direction")
1327
 
                                    == "out"):
1328
 
                                    arg.setAttribute("name",
1329
 
                                                     "xml_data")
1330
 
            xmlstring = document.toxml("utf-8")
1331
 
            document.unlink()
1332
 
        except (AttributeError, xml.dom.DOMException,
1333
 
                xml.parsers.expat.ExpatError) as error:
1334
 
            logger.error("Failed to override Introspection method",
1335
 
                         exc_info=error)
1336
 
        return xmlstring
1337
 
 
1338
 
 
1339
 
class DBusObjectWithProperties(DBusObjectWithAnnotations):
 
600
class DBusObjectWithProperties(dbus.service.Object):
1340
601
    """A D-Bus object with properties.
1341
602
 
1342
603
    Classes inheriting from this can use the dbus_service_property
1343
604
    decorator to expose methods as D-Bus properties.  It exposes the
1344
605
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
606
    """
1346
 
 
 
607
    
 
608
    @staticmethod
 
609
    def _is_dbus_property(obj):
 
610
        return getattr(obj, "_dbus_is_property", False)
 
611
    
 
612
    def _get_all_dbus_properties(self):
 
613
        """Returns a generator of (name, attribute) pairs
 
614
        """
 
615
        return ((prop._dbus_name, prop)
 
616
                for name, prop in
 
617
                inspect.getmembers(self, self._is_dbus_property))
 
618
    
1347
619
    def _get_dbus_property(self, interface_name, property_name):
1348
620
        """Returns a bound method if one exists which is a D-Bus
1349
621
        property with the specified name and interface.
1350
622
        """
1351
 
        for cls in self.__class__.__mro__:
1352
 
            for name, value in inspect.getmembers(
1353
 
                    cls, self._is_dbus_thing("property")):
1354
 
                if (value._dbus_name == property_name
1355
 
                    and value._dbus_interface == interface_name):
1356
 
                    return value.__get__(self)
1357
 
 
 
623
        for name in (property_name,
 
624
                     property_name + "_dbus_property"):
 
625
            prop = getattr(self, name, None)
 
626
            if (prop is None
 
627
                or not self._is_dbus_property(prop)
 
628
                or prop._dbus_name != property_name
 
629
                or (interface_name and prop._dbus_interface
 
630
                    and interface_name != prop._dbus_interface)):
 
631
                continue
 
632
            return prop
1358
633
        # No such property
1359
 
        raise DBusPropertyNotFound("{}:{}.{}".format(
1360
 
            self.dbus_object_path, interface_name, property_name))
1361
 
 
1362
 
    @classmethod
1363
 
    def _get_all_interface_names(cls):
1364
 
        """Get a sequence of all interfaces supported by an object"""
1365
 
        return (name for name in set(getattr(getattr(x, attr),
1366
 
                                             "_dbus_interface", None)
1367
 
                                     for x in (inspect.getmro(cls))
1368
 
                                     for attr in dir(x))
1369
 
                if name is not None)
1370
 
 
1371
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1372
 
                         in_signature="ss",
 
634
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
 
635
                                   + interface_name + "."
 
636
                                   + property_name)
 
637
    
 
638
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
639
                         out_signature="v")
1374
640
    def Get(self, interface_name, property_name):
1375
641
        """Standard D-Bus property Get() method, see D-Bus standard.
1381
647
        if not hasattr(value, "variant_level"):
1382
648
            return value
1383
649
        return type(value)(value, variant_level=value.variant_level+1)
1384
 
 
 
650
    
1385
651
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
652
    def Set(self, interface_name, property_name, value):
1387
653
        """Standard D-Bus property Set() method, see D-Bus standard.
1393
659
            # The byte_arrays option is not supported yet on
1394
660
            # signatures other than "ay".
1395
661
            if prop._dbus_signature != "ay":
1396
 
                raise ValueError("Byte arrays not supported for non-"
1397
 
                                 "'ay' signature {!r}"
1398
 
                                 .format(prop._dbus_signature))
1399
 
            value = dbus.ByteArray(b''.join(chr(byte)
1400
 
                                            for byte in value))
 
662
                raise ValueError
 
663
            value = dbus.ByteArray(''.join(unichr(byte)
 
664
                                           for byte in value))
1401
665
        prop(value)
1402
 
 
1403
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1404
 
                         in_signature="s",
 
666
    
 
667
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
668
                         out_signature="a{sv}")
1406
669
    def GetAll(self, interface_name):
1407
670
        """Standard D-Bus property GetAll() method, see D-Bus
1409
672
 
1410
673
        Note: Will not include properties with access="write".
1411
674
        """
1412
 
        properties = {}
1413
 
        for name, prop in self._get_all_dbus_things("property"):
 
675
        all = {}
 
676
        for name, prop in self._get_all_dbus_properties():
1414
677
            if (interface_name
1415
678
                and interface_name != prop._dbus_interface):
1416
679
                # Interface non-empty but did not match
1420
683
                continue
1421
684
            value = prop()
1422
685
            if not hasattr(value, "variant_level"):
1423
 
                properties[name] = value
 
686
                all[name] = value
1424
687
                continue
1425
 
            properties[name] = type(value)(
1426
 
                value, variant_level=value.variant_level + 1)
1427
 
        return dbus.Dictionary(properties, signature="sv")
1428
 
 
1429
 
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
 
    def PropertiesChanged(self, interface_name, changed_properties,
1431
 
                          invalidated_properties):
1432
 
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
 
        standard.
1434
 
        """
1435
 
        pass
1436
 
 
 
688
            all[name] = type(value)(value, variant_level=
 
689
                                    value.variant_level+1)
 
690
        return dbus.Dictionary(all, signature="sv")
 
691
    
1437
692
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
693
                         out_signature="s",
1439
694
                         path_keyword='object_path',
1440
695
                         connection_keyword='connection')
1441
696
    def Introspect(self, object_path, connection):
1442
 
        """Overloading of standard D-Bus method.
1443
 
 
1444
 
        Inserts property tags and interface annotation tags.
 
697
        """Standard D-Bus method, overloaded to insert property tags.
1445
698
        """
1446
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
 
                                                         object_path,
1448
 
                                                         connection)
 
699
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
700
                                                   connection)
1449
701
        try:
1450
702
            document = xml.dom.minidom.parseString(xmlstring)
1451
 
 
1452
703
            def make_tag(document, name, prop):
1453
704
                e = document.createElement("property")
1454
705
                e.setAttribute("name", name)
1455
706
                e.setAttribute("type", prop._dbus_signature)
1456
707
                e.setAttribute("access", prop._dbus_access)
1457
708
                return e
1458
 
 
1459
709
            for if_tag in document.getElementsByTagName("interface"):
1460
 
                # Add property tags
1461
710
                for tag in (make_tag(document, name, prop)
1462
711
                            for name, prop
1463
 
                            in self._get_all_dbus_things("property")
 
712
                            in self._get_all_dbus_properties()
1464
713
                            if prop._dbus_interface
1465
714
                            == if_tag.getAttribute("name")):
1466
715
                    if_tag.appendChild(tag)
1467
 
                # Add annotation tags for properties
1468
 
                for tag in if_tag.getElementsByTagName("property"):
1469
 
                    annots = dict()
1470
 
                    for name, prop in self._get_all_dbus_things(
1471
 
                            "property"):
1472
 
                        if (name == tag.getAttribute("name")
1473
 
                            and prop._dbus_interface
1474
 
                            == if_tag.getAttribute("name")):
1475
 
                            annots.update(getattr(
1476
 
                                prop, "_dbus_annotations", {}))
1477
 
                    for name, value in annots.items():
1478
 
                        ann_tag = document.createElement(
1479
 
                            "annotation")
1480
 
                        ann_tag.setAttribute("name", name)
1481
 
                        ann_tag.setAttribute("value", value)
1482
 
                        tag.appendChild(ann_tag)
1483
716
                # Add the names to the return values for the
1484
717
                # "org.freedesktop.DBus.Properties" methods
1485
718
                if (if_tag.getAttribute("name")
1500
733
        except (AttributeError, xml.dom.DOMException,
1501
734
                xml.parsers.expat.ExpatError) as error:
1502
735
            logger.error("Failed to override Introspection method",
1503
 
                         exc_info=error)
1504
 
        return xmlstring
1505
 
 
1506
 
 
1507
 
try:
1508
 
    dbus.OBJECT_MANAGER_IFACE
1509
 
except AttributeError:
1510
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
 
 
1512
 
 
1513
 
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
 
    """A D-Bus object with an ObjectManager.
1515
 
 
1516
 
    Classes inheriting from this exposes the standard
1517
 
    GetManagedObjects call and the InterfacesAdded and
1518
 
    InterfacesRemoved signals on the standard
1519
 
    "org.freedesktop.DBus.ObjectManager" interface.
1520
 
 
1521
 
    Note: No signals are sent automatically; they must be sent
1522
 
    manually.
1523
 
    """
1524
 
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
 
                         out_signature="a{oa{sa{sv}}}")
1526
 
    def GetManagedObjects(self):
1527
 
        """This function must be overridden"""
1528
 
        raise NotImplementedError()
1529
 
 
1530
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
 
                         signature="oa{sa{sv}}")
1532
 
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
 
        pass
1534
 
 
1535
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
 
    def InterfacesRemoved(self, object_path, interfaces):
1537
 
        pass
1538
 
 
1539
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
 
                         out_signature="s",
1541
 
                         path_keyword='object_path',
1542
 
                         connection_keyword='connection')
1543
 
    def Introspect(self, object_path, connection):
1544
 
        """Overloading of standard D-Bus method.
1545
 
 
1546
 
        Override return argument name of GetManagedObjects to be
1547
 
        "objpath_interfaces_and_properties"
1548
 
        """
1549
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
 
                                                         object_path,
1551
 
                                                         connection)
1552
 
        try:
1553
 
            document = xml.dom.minidom.parseString(xmlstring)
1554
 
 
1555
 
            for if_tag in document.getElementsByTagName("interface"):
1556
 
                # Fix argument name for the GetManagedObjects method
1557
 
                if (if_tag.getAttribute("name")
1558
 
                    == dbus.OBJECT_MANAGER_IFACE):
1559
 
                    for cn in if_tag.getElementsByTagName("method"):
1560
 
                        if (cn.getAttribute("name")
1561
 
                            == "GetManagedObjects"):
1562
 
                            for arg in cn.getElementsByTagName("arg"):
1563
 
                                if (arg.getAttribute("direction")
1564
 
                                    == "out"):
1565
 
                                    arg.setAttribute(
1566
 
                                        "name",
1567
 
                                        "objpath_interfaces"
1568
 
                                        "_and_properties")
1569
 
            xmlstring = document.toxml("utf-8")
1570
 
            document.unlink()
1571
 
        except (AttributeError, xml.dom.DOMException,
1572
 
                xml.parsers.expat.ExpatError) as error:
1573
 
            logger.error("Failed to override Introspection method",
1574
 
                         exc_info=error)
1575
 
        return xmlstring
1576
 
 
1577
 
 
1578
 
def datetime_to_dbus(dt, variant_level=0):
1579
 
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1580
 
    if dt is None:
1581
 
        return dbus.String("", variant_level=variant_level)
1582
 
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
 
 
1584
 
 
1585
 
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
 
    """A class decorator; applied to a subclass of
1587
 
    dbus.service.Object, it will add alternate D-Bus attributes with
1588
 
    interface names according to the "alt_interface_names" mapping.
1589
 
    Usage:
1590
 
 
1591
 
    @alternate_dbus_interfaces({"org.example.Interface":
1592
 
                                    "net.example.AlternateInterface"})
1593
 
    class SampleDBusObject(dbus.service.Object):
1594
 
        @dbus.service.method("org.example.Interface")
1595
 
        def SampleDBusMethod():
1596
 
            pass
1597
 
 
1598
 
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
 
    reachable via two interfaces: "org.example.Interface" and
1600
 
    "net.example.AlternateInterface", the latter of which will have
1601
 
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
 
    "true", unless "deprecate" is passed with a False value.
1603
 
 
1604
 
    This works for methods and signals, and also for D-Bus properties
1605
 
    (from DBusObjectWithProperties) and interfaces (from the
1606
 
    dbus_interface_annotations decorator).
1607
 
    """
1608
 
 
1609
 
    def wrapper(cls):
1610
 
        for orig_interface_name, alt_interface_name in (
1611
 
                alt_interface_names.items()):
1612
 
            attr = {}
1613
 
            interface_names = set()
1614
 
            # Go though all attributes of the class
1615
 
            for attrname, attribute in inspect.getmembers(cls):
1616
 
                # Ignore non-D-Bus attributes, and D-Bus attributes
1617
 
                # with the wrong interface name
1618
 
                if (not hasattr(attribute, "_dbus_interface")
1619
 
                    or not attribute._dbus_interface.startswith(
1620
 
                        orig_interface_name)):
1621
 
                    continue
1622
 
                # Create an alternate D-Bus interface name based on
1623
 
                # the current name
1624
 
                alt_interface = attribute._dbus_interface.replace(
1625
 
                    orig_interface_name, alt_interface_name)
1626
 
                interface_names.add(alt_interface)
1627
 
                # Is this a D-Bus signal?
1628
 
                if getattr(attribute, "_dbus_is_signal", False):
1629
 
                    # Extract the original non-method undecorated
1630
 
                    # function by black magic
1631
 
                    if sys.version_info.major == 2:
1632
 
                        nonmethod_func = (dict(
1633
 
                            zip(attribute.func_code.co_freevars,
1634
 
                                attribute.__closure__))
1635
 
                                          ["func"].cell_contents)
1636
 
                    else:
1637
 
                        nonmethod_func = (dict(
1638
 
                            zip(attribute.__code__.co_freevars,
1639
 
                                attribute.__closure__))
1640
 
                                          ["func"].cell_contents)
1641
 
                    # Create a new, but exactly alike, function
1642
 
                    # object, and decorate it to be a new D-Bus signal
1643
 
                    # with the alternate D-Bus interface name
1644
 
                    new_function = copy_function(nonmethod_func)
1645
 
                    new_function = (dbus.service.signal(
1646
 
                        alt_interface,
1647
 
                        attribute._dbus_signature)(new_function))
1648
 
                    # Copy annotations, if any
1649
 
                    try:
1650
 
                        new_function._dbus_annotations = dict(
1651
 
                            attribute._dbus_annotations)
1652
 
                    except AttributeError:
1653
 
                        pass
1654
 
 
1655
 
                    # Define a creator of a function to call both the
1656
 
                    # original and alternate functions, so both the
1657
 
                    # original and alternate signals gets sent when
1658
 
                    # the function is called
1659
 
                    def fixscope(func1, func2):
1660
 
                        """This function is a scope container to pass
1661
 
                        func1 and func2 to the "call_both" function
1662
 
                        outside of its arguments"""
1663
 
 
1664
 
                        @functools.wraps(func2)
1665
 
                        def call_both(*args, **kwargs):
1666
 
                            """This function will emit two D-Bus
1667
 
                            signals by calling func1 and func2"""
1668
 
                            func1(*args, **kwargs)
1669
 
                            func2(*args, **kwargs)
1670
 
                        # Make wrapper function look like a D-Bus
1671
 
                        # signal
1672
 
                        for name, attr in inspect.getmembers(func2):
1673
 
                            if name.startswith("_dbus_"):
1674
 
                                setattr(call_both, name, attr)
1675
 
 
1676
 
                        return call_both
1677
 
                    # Create the "call_both" function and add it to
1678
 
                    # the class
1679
 
                    attr[attrname] = fixscope(attribute, new_function)
1680
 
                # Is this a D-Bus method?
1681
 
                elif getattr(attribute, "_dbus_is_method", False):
1682
 
                    # Create a new, but exactly alike, function
1683
 
                    # object.  Decorate it to be a new D-Bus method
1684
 
                    # with the alternate D-Bus interface name.  Add it
1685
 
                    # to the class.
1686
 
                    attr[attrname] = (
1687
 
                        dbus.service.method(
1688
 
                            alt_interface,
1689
 
                            attribute._dbus_in_signature,
1690
 
                            attribute._dbus_out_signature)
1691
 
                        (copy_function(attribute)))
1692
 
                    # Copy annotations, if any
1693
 
                    try:
1694
 
                        attr[attrname]._dbus_annotations = dict(
1695
 
                            attribute._dbus_annotations)
1696
 
                    except AttributeError:
1697
 
                        pass
1698
 
                # Is this a D-Bus property?
1699
 
                elif getattr(attribute, "_dbus_is_property", False):
1700
 
                    # Create a new, but exactly alike, function
1701
 
                    # object, and decorate it to be a new D-Bus
1702
 
                    # property with the alternate D-Bus interface
1703
 
                    # name.  Add it to the class.
1704
 
                    attr[attrname] = (dbus_service_property(
1705
 
                        alt_interface, attribute._dbus_signature,
1706
 
                        attribute._dbus_access,
1707
 
                        attribute._dbus_get_args_options
1708
 
                        ["byte_arrays"])
1709
 
                                      (copy_function(attribute)))
1710
 
                    # Copy annotations, if any
1711
 
                    try:
1712
 
                        attr[attrname]._dbus_annotations = dict(
1713
 
                            attribute._dbus_annotations)
1714
 
                    except AttributeError:
1715
 
                        pass
1716
 
                # Is this a D-Bus interface?
1717
 
                elif getattr(attribute, "_dbus_is_interface", False):
1718
 
                    # Create a new, but exactly alike, function
1719
 
                    # object.  Decorate it to be a new D-Bus interface
1720
 
                    # with the alternate D-Bus interface name.  Add it
1721
 
                    # to the class.
1722
 
                    attr[attrname] = (
1723
 
                        dbus_interface_annotations(alt_interface)
1724
 
                        (copy_function(attribute)))
1725
 
            if deprecate:
1726
 
                # Deprecate all alternate interfaces
1727
 
                iname = "_AlternateDBusNames_interface_annotation{}"
1728
 
                for interface_name in interface_names:
1729
 
 
1730
 
                    @dbus_interface_annotations(interface_name)
1731
 
                    def func(self):
1732
 
                        return {"org.freedesktop.DBus.Deprecated":
1733
 
                                "true"}
1734
 
                    # Find an unused name
1735
 
                    for aname in (iname.format(i)
1736
 
                                  for i in itertools.count()):
1737
 
                        if aname not in attr:
1738
 
                            attr[aname] = func
1739
 
                            break
1740
 
            if interface_names:
1741
 
                # Replace the class with a new subclass of it with
1742
 
                # methods, signals, etc. as created above.
1743
 
                if sys.version_info.major == 2:
1744
 
                    cls = type(b"{}Alternate".format(cls.__name__),
1745
 
                               (cls, ), attr)
1746
 
                else:
1747
 
                    cls = type("{}Alternate".format(cls.__name__),
1748
 
                               (cls, ), attr)
1749
 
        return cls
1750
 
 
1751
 
    return wrapper
1752
 
 
1753
 
 
1754
 
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
 
                            "se.bsnet.fukt.Mandos"})
 
736
                         error)
 
737
        return xmlstring
 
738
 
 
739
 
1756
740
class ClientDBus(Client, DBusObjectWithProperties):
1757
741
    """A Client class using D-Bus
1758
 
 
 
742
    
1759
743
    Attributes:
1760
744
    dbus_object_path: dbus.ObjectPath
1761
745
    bus: dbus.SystemBus()
1762
746
    """
1763
 
 
 
747
    
1764
748
    runtime_expansions = (Client.runtime_expansions
1765
 
                          + ("dbus_object_path", ))
1766
 
 
1767
 
    _interface = "se.recompile.Mandos.Client"
1768
 
 
 
749
                          + ("dbus_object_path",))
 
750
    
1769
751
    # dbus.service.Object doesn't use super(), so we can't either.
1770
 
 
1771
 
    def __init__(self, bus=None, *args, **kwargs):
 
752
    
 
753
    def __init__(self, bus = None, *args, **kwargs):
 
754
        self._approvals_pending = 0
1772
755
        self.bus = bus
1773
756
        Client.__init__(self, *args, **kwargs)
1774
757
        # Only now, when this client is initialized, can it show up on
1775
758
        # the D-Bus
1776
 
        client_object_name = str(self.name).translate(
 
759
        client_object_name = unicode(self.name).translate(
1777
760
            {ord("."): ord("_"),
1778
761
             ord("-"): ord("_")})
1779
 
        self.dbus_object_path = dbus.ObjectPath(
1780
 
            "/clients/" + client_object_name)
 
762
        self.dbus_object_path = (dbus.ObjectPath
 
763
                                 ("/clients/" + client_object_name))
1781
764
        DBusObjectWithProperties.__init__(self, self.bus,
1782
765
                                          self.dbus_object_path)
1783
 
 
1784
 
    def notifychangeproperty(transform_func, dbus_name,
1785
 
                             type_func=lambda x: x,
1786
 
                             variant_level=1,
1787
 
                             invalidate_only=False,
1788
 
                             _interface=_interface):
1789
 
        """ Modify a variable so that it's a property which announces
1790
 
        its changes to DBus.
1791
 
 
1792
 
        transform_fun: Function that takes a value and a variant_level
1793
 
                       and transforms it to a D-Bus type.
1794
 
        dbus_name: D-Bus name of the variable
1795
 
        type_func: Function that transform the value before sending it
1796
 
                   to the D-Bus.  Default: no transform
1797
 
        variant_level: D-Bus variant level.  Default: 1
1798
 
        """
1799
 
        attrname = "_{}".format(dbus_name)
1800
 
 
1801
 
        def setter(self, value):
1802
 
            if hasattr(self, "dbus_object_path"):
1803
 
                if (not hasattr(self, attrname) or
1804
 
                    type_func(getattr(self, attrname, None))
1805
 
                    != type_func(value)):
1806
 
                    if invalidate_only:
1807
 
                        self.PropertiesChanged(
1808
 
                            _interface, dbus.Dictionary(),
1809
 
                            dbus.Array((dbus_name, )))
1810
 
                    else:
1811
 
                        dbus_value = transform_func(
1812
 
                            type_func(value),
1813
 
                            variant_level=variant_level)
1814
 
                        self.PropertyChanged(dbus.String(dbus_name),
1815
 
                                             dbus_value)
1816
 
                        self.PropertiesChanged(
1817
 
                            _interface,
1818
 
                            dbus.Dictionary({dbus.String(dbus_name):
1819
 
                                             dbus_value}),
1820
 
                            dbus.Array())
1821
 
            setattr(self, attrname, value)
1822
 
 
1823
 
        return property(lambda self: getattr(self, attrname), setter)
1824
 
 
1825
 
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
 
    approvals_pending = notifychangeproperty(dbus.Boolean,
1827
 
                                             "ApprovalPending",
1828
 
                                             type_func=bool)
1829
 
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
 
    last_enabled = notifychangeproperty(datetime_to_dbus,
1831
 
                                        "LastEnabled")
1832
 
    checker = notifychangeproperty(
1833
 
        dbus.Boolean, "CheckerRunning",
1834
 
        type_func=lambda checker: checker is not None)
1835
 
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
 
                                           "LastCheckedOK")
1837
 
    last_checker_status = notifychangeproperty(dbus.Int16,
1838
 
                                               "LastCheckerStatus")
1839
 
    last_approval_request = notifychangeproperty(
1840
 
        datetime_to_dbus, "LastApprovalRequest")
1841
 
    approved_by_default = notifychangeproperty(dbus.Boolean,
1842
 
                                               "ApprovedByDefault")
1843
 
    approval_delay = notifychangeproperty(
1844
 
        dbus.UInt64, "ApprovalDelay",
1845
 
        type_func=lambda td: td.total_seconds() * 1000)
1846
 
    approval_duration = notifychangeproperty(
1847
 
        dbus.UInt64, "ApprovalDuration",
1848
 
        type_func=lambda td: td.total_seconds() * 1000)
1849
 
    host = notifychangeproperty(dbus.String, "Host")
1850
 
    timeout = notifychangeproperty(
1851
 
        dbus.UInt64, "Timeout",
1852
 
        type_func=lambda td: td.total_seconds() * 1000)
1853
 
    extended_timeout = notifychangeproperty(
1854
 
        dbus.UInt64, "ExtendedTimeout",
1855
 
        type_func=lambda td: td.total_seconds() * 1000)
1856
 
    interval = notifychangeproperty(
1857
 
        dbus.UInt64, "Interval",
1858
 
        type_func=lambda td: td.total_seconds() * 1000)
1859
 
    checker_command = notifychangeproperty(dbus.String, "Checker")
1860
 
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
 
                                  invalidate_only=True)
1862
 
 
1863
 
    del notifychangeproperty
1864
 
 
 
766
        
 
767
    def _get_approvals_pending(self):
 
768
        return self._approvals_pending
 
769
    def _set_approvals_pending(self, value):
 
770
        old_value = self._approvals_pending
 
771
        self._approvals_pending = value
 
772
        bval = bool(value)
 
773
        if (hasattr(self, "dbus_object_path")
 
774
            and bval is not bool(old_value)):
 
775
            dbus_bool = dbus.Boolean(bval, variant_level=1)
 
776
            self.PropertyChanged(dbus.String("ApprovalPending"),
 
777
                                 dbus_bool)
 
778
 
 
779
    approvals_pending = property(_get_approvals_pending,
 
780
                                 _set_approvals_pending)
 
781
    del _get_approvals_pending, _set_approvals_pending
 
782
    
 
783
    @staticmethod
 
784
    def _datetime_to_dbus(dt, variant_level=0):
 
785
        """Convert a UTC datetime.datetime() to a D-Bus type."""
 
786
        return dbus.String(dt.isoformat(),
 
787
                           variant_level=variant_level)
 
788
    
 
789
    def enable(self):
 
790
        oldstate = getattr(self, "enabled", False)
 
791
        r = Client.enable(self)
 
792
        if oldstate != self.enabled:
 
793
            # Emit D-Bus signals
 
794
            self.PropertyChanged(dbus.String("Enabled"),
 
795
                                 dbus.Boolean(True, variant_level=1))
 
796
            self.PropertyChanged(
 
797
                dbus.String("LastEnabled"),
 
798
                self._datetime_to_dbus(self.last_enabled,
 
799
                                       variant_level=1))
 
800
        return r
 
801
    
 
802
    def disable(self, quiet = False):
 
803
        oldstate = getattr(self, "enabled", False)
 
804
        r = Client.disable(self, quiet=quiet)
 
805
        if not quiet and oldstate != self.enabled:
 
806
            # Emit D-Bus signal
 
807
            self.PropertyChanged(dbus.String("Enabled"),
 
808
                                 dbus.Boolean(False, variant_level=1))
 
809
        return r
 
810
    
1865
811
    def __del__(self, *args, **kwargs):
1866
812
        try:
1867
813
            self.remove_from_connection()
1870
816
        if hasattr(DBusObjectWithProperties, "__del__"):
1871
817
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
818
        Client.__del__(self, *args, **kwargs)
1873
 
 
1874
 
    def checker_callback(self, source, condition,
1875
 
                         connection, command, *args, **kwargs):
1876
 
        ret = Client.checker_callback(self, source, condition,
1877
 
                                      connection, command, *args,
1878
 
                                      **kwargs)
1879
 
        exitstatus = self.last_checker_status
1880
 
        if exitstatus >= 0:
 
819
    
 
820
    def checker_callback(self, pid, condition, command,
 
821
                         *args, **kwargs):
 
822
        self.checker_callback_tag = None
 
823
        self.checker = None
 
824
        # Emit D-Bus signal
 
825
        self.PropertyChanged(dbus.String("CheckerRunning"),
 
826
                             dbus.Boolean(False, variant_level=1))
 
827
        if os.WIFEXITED(condition):
 
828
            exitstatus = os.WEXITSTATUS(condition)
1881
829
            # Emit D-Bus signal
1882
830
            self.CheckerCompleted(dbus.Int16(exitstatus),
1883
 
                                  # This is specific to GNU libC
1884
 
                                  dbus.Int64(exitstatus << 8),
 
831
                                  dbus.Int64(condition),
1885
832
                                  dbus.String(command))
1886
833
        else:
1887
834
            # Emit D-Bus signal
1888
835
            self.CheckerCompleted(dbus.Int16(-1),
1889
 
                                  dbus.Int64(
1890
 
                                      # This is specific to GNU libC
1891
 
                                      (exitstatus << 8)
1892
 
                                      | self.last_checker_signal),
 
836
                                  dbus.Int64(condition),
1893
837
                                  dbus.String(command))
1894
 
        return ret
1895
 
 
 
838
        
 
839
        return Client.checker_callback(self, pid, condition, command,
 
840
                                       *args, **kwargs)
 
841
    
 
842
    def checked_ok(self, *args, **kwargs):
 
843
        Client.checked_ok(self, *args, **kwargs)
 
844
        # Emit D-Bus signal
 
845
        self.PropertyChanged(
 
846
            dbus.String("LastCheckedOK"),
 
847
            (self._datetime_to_dbus(self.last_checked_ok,
 
848
                                    variant_level=1)))
 
849
    
 
850
    def need_approval(self, *args, **kwargs):
 
851
        r = Client.need_approval(self, *args, **kwargs)
 
852
        # Emit D-Bus signal
 
853
        self.PropertyChanged(
 
854
            dbus.String("LastApprovalRequest"),
 
855
            (self._datetime_to_dbus(self.last_approval_request,
 
856
                                    variant_level=1)))
 
857
        return r
 
858
    
1896
859
    def start_checker(self, *args, **kwargs):
1897
 
        old_checker_pid = getattr(self.checker, "pid", None)
 
860
        old_checker = self.checker
 
861
        if self.checker is not None:
 
862
            old_checker_pid = self.checker.pid
 
863
        else:
 
864
            old_checker_pid = None
1898
865
        r = Client.start_checker(self, *args, **kwargs)
1899
866
        # Only if new checker process was started
1900
867
        if (self.checker is not None
1901
868
            and old_checker_pid != self.checker.pid):
1902
869
            # Emit D-Bus signal
1903
870
            self.CheckerStarted(self.current_checker_command)
 
871
            self.PropertyChanged(
 
872
                dbus.String("CheckerRunning"),
 
873
                dbus.Boolean(True, variant_level=1))
 
874
        return r
 
875
    
 
876
    def stop_checker(self, *args, **kwargs):
 
877
        old_checker = getattr(self, "checker", None)
 
878
        r = Client.stop_checker(self, *args, **kwargs)
 
879
        if (old_checker is not None
 
880
            and getattr(self, "checker", None) is None):
 
881
            self.PropertyChanged(dbus.String("CheckerRunning"),
 
882
                                 dbus.Boolean(False, variant_level=1))
1904
883
        return r
1905
884
 
1906
885
    def _reset_approved(self):
1907
 
        self.approved = None
 
886
        self._approved = None
1908
887
        return False
1909
 
 
 
888
    
1910
889
    def approve(self, value=True):
1911
 
        self.approved = value
1912
 
        GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
 
                             * 1000), self._reset_approved)
1914
890
        self.send_changedstate()
1915
 
 
1916
 
    #  D-Bus methods, signals & properties
1917
 
 
1918
 
    #  Interfaces
1919
 
 
1920
 
    #  Signals
1921
 
 
 
891
        self._approved = value
 
892
        gobject.timeout_add(self._timedelta_to_milliseconds
 
893
                            (self.approval_duration),
 
894
                            self._reset_approved)
 
895
    
 
896
    
 
897
    ## D-Bus methods, signals & properties
 
898
    _interface = "se.bsnet.fukt.Mandos.Client"
 
899
    
 
900
    ## Signals
 
901
    
1922
902
    # CheckerCompleted - signal
1923
903
    @dbus.service.signal(_interface, signature="nxs")
1924
904
    def CheckerCompleted(self, exitcode, waitstatus, command):
1925
905
        "D-Bus signal"
1926
906
        pass
1927
 
 
 
907
    
1928
908
    # CheckerStarted - signal
1929
909
    @dbus.service.signal(_interface, signature="s")
1930
910
    def CheckerStarted(self, command):
1931
911
        "D-Bus signal"
1932
912
        pass
1933
 
 
 
913
    
1934
914
    # PropertyChanged - signal
1935
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
915
    @dbus.service.signal(_interface, signature="sv")
1937
916
    def PropertyChanged(self, property, value):
1938
917
        "D-Bus signal"
1939
918
        pass
1940
 
 
 
919
    
1941
920
    # GotSecret - signal
1942
921
    @dbus.service.signal(_interface)
1943
922
    def GotSecret(self):
1946
925
        server to mandos-client
1947
926
        """
1948
927
        pass
1949
 
 
 
928
    
1950
929
    # Rejected - signal
1951
930
    @dbus.service.signal(_interface, signature="s")
1952
931
    def Rejected(self, reason):
1953
932
        "D-Bus signal"
1954
933
        pass
1955
 
 
 
934
    
1956
935
    # NeedApproval - signal
1957
936
    @dbus.service.signal(_interface, signature="tb")
1958
937
    def NeedApproval(self, timeout, default):
1959
938
        "D-Bus signal"
1960
939
        return self.need_approval()
1961
 
 
1962
 
    #  Methods
1963
 
 
 
940
    
 
941
    ## Methods
 
942
    
1964
943
    # Approve - method
1965
944
    @dbus.service.method(_interface, in_signature="b")
1966
945
    def Approve(self, value):
1967
946
        self.approve(value)
1968
 
 
 
947
    
1969
948
    # CheckedOK - method
1970
949
    @dbus.service.method(_interface)
1971
950
    def CheckedOK(self):
1972
951
        self.checked_ok()
1973
 
 
 
952
    
1974
953
    # Enable - method
1975
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
954
    @dbus.service.method(_interface)
1977
955
    def Enable(self):
1978
956
        "D-Bus method"
1979
957
        self.enable()
1980
 
 
 
958
    
1981
959
    # StartChecker - method
1982
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
960
    @dbus.service.method(_interface)
1984
961
    def StartChecker(self):
1985
962
        "D-Bus method"
1986
963
        self.start_checker()
1987
 
 
 
964
    
1988
965
    # Disable - method
1989
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
966
    @dbus.service.method(_interface)
1991
967
    def Disable(self):
1992
968
        "D-Bus method"
1993
969
        self.disable()
1994
 
 
 
970
    
1995
971
    # StopChecker - method
1996
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
972
    @dbus.service.method(_interface)
1998
973
    def StopChecker(self):
1999
974
        self.stop_checker()
2000
 
 
2001
 
    #  Properties
2002
 
 
 
975
    
 
976
    ## Properties
 
977
    
2003
978
    # ApprovalPending - property
2004
979
    @dbus_service_property(_interface, signature="b", access="read")
2005
980
    def ApprovalPending_dbus_property(self):
2006
981
        return dbus.Boolean(bool(self.approvals_pending))
2007
 
 
 
982
    
2008
983
    # ApprovedByDefault - property
2009
 
    @dbus_service_property(_interface,
2010
 
                           signature="b",
 
984
    @dbus_service_property(_interface, signature="b",
2011
985
                           access="readwrite")
2012
986
    def ApprovedByDefault_dbus_property(self, value=None):
2013
987
        if value is None:       # get
2014
988
            return dbus.Boolean(self.approved_by_default)
2015
989
        self.approved_by_default = bool(value)
2016
 
 
 
990
        # Emit D-Bus signal
 
991
        self.PropertyChanged(dbus.String("ApprovedByDefault"),
 
992
                             dbus.Boolean(value, variant_level=1))
 
993
    
2017
994
    # ApprovalDelay - property
2018
 
    @dbus_service_property(_interface,
2019
 
                           signature="t",
 
995
    @dbus_service_property(_interface, signature="t",
2020
996
                           access="readwrite")
2021
997
    def ApprovalDelay_dbus_property(self, value=None):
2022
998
        if value is None:       # get
2023
 
            return dbus.UInt64(self.approval_delay.total_seconds()
2024
 
                               * 1000)
 
999
            return dbus.UInt64(self.approval_delay_milliseconds())
2025
1000
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
 
 
 
1001
        # Emit D-Bus signal
 
1002
        self.PropertyChanged(dbus.String("ApprovalDelay"),
 
1003
                             dbus.UInt64(value, variant_level=1))
 
1004
    
2027
1005
    # ApprovalDuration - property
2028
 
    @dbus_service_property(_interface,
2029
 
                           signature="t",
 
1006
    @dbus_service_property(_interface, signature="t",
2030
1007
                           access="readwrite")
2031
1008
    def ApprovalDuration_dbus_property(self, value=None):
2032
1009
        if value is None:       # get
2033
 
            return dbus.UInt64(self.approval_duration.total_seconds()
2034
 
                               * 1000)
 
1010
            return dbus.UInt64(self._timedelta_to_milliseconds(
 
1011
                    self.approval_duration))
2035
1012
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
 
 
 
1013
        # Emit D-Bus signal
 
1014
        self.PropertyChanged(dbus.String("ApprovalDuration"),
 
1015
                             dbus.UInt64(value, variant_level=1))
 
1016
    
2037
1017
    # Name - property
2038
 
    @dbus_annotations(
2039
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1018
    @dbus_service_property(_interface, signature="s", access="read")
2041
1019
    def Name_dbus_property(self):
2042
1020
        return dbus.String(self.name)
2043
 
 
2044
 
    # KeyID - property
2045
 
    @dbus_annotations(
2046
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
 
    @dbus_service_property(_interface, signature="s", access="read")
2048
 
    def KeyID_dbus_property(self):
2049
 
        return dbus.String(self.key_id)
2050
 
 
 
1021
    
2051
1022
    # Fingerprint - property
2052
 
    @dbus_annotations(
2053
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1023
    @dbus_service_property(_interface, signature="s", access="read")
2055
1024
    def Fingerprint_dbus_property(self):
2056
1025
        return dbus.String(self.fingerprint)
2057
 
 
 
1026
    
2058
1027
    # Host - property
2059
 
    @dbus_service_property(_interface,
2060
 
                           signature="s",
 
1028
    @dbus_service_property(_interface, signature="s",
2061
1029
                           access="readwrite")
2062
1030
    def Host_dbus_property(self, value=None):
2063
1031
        if value is None:       # get
2064
1032
            return dbus.String(self.host)
2065
 
        self.host = str(value)
2066
 
 
 
1033
        self.host = value
 
1034
        # Emit D-Bus signal
 
1035
        self.PropertyChanged(dbus.String("Host"),
 
1036
                             dbus.String(value, variant_level=1))
 
1037
    
2067
1038
    # Created - property
2068
 
    @dbus_annotations(
2069
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1039
    @dbus_service_property(_interface, signature="s", access="read")
2071
1040
    def Created_dbus_property(self):
2072
 
        return datetime_to_dbus(self.created)
2073
 
 
 
1041
        return dbus.String(self._datetime_to_dbus(self.created))
 
1042
    
2074
1043
    # LastEnabled - property
2075
1044
    @dbus_service_property(_interface, signature="s", access="read")
2076
1045
    def LastEnabled_dbus_property(self):
2077
 
        return datetime_to_dbus(self.last_enabled)
2078
 
 
 
1046
        if self.last_enabled is None:
 
1047
            return dbus.String("")
 
1048
        return dbus.String(self._datetime_to_dbus(self.last_enabled))
 
1049
    
2079
1050
    # Enabled - property
2080
 
    @dbus_service_property(_interface,
2081
 
                           signature="b",
 
1051
    @dbus_service_property(_interface, signature="b",
2082
1052
                           access="readwrite")
2083
1053
    def Enabled_dbus_property(self, value=None):
2084
1054
        if value is None:       # get
2087
1057
            self.enable()
2088
1058
        else:
2089
1059
            self.disable()
2090
 
 
 
1060
    
2091
1061
    # LastCheckedOK - property
2092
 
    @dbus_service_property(_interface,
2093
 
                           signature="s",
 
1062
    @dbus_service_property(_interface, signature="s",
2094
1063
                           access="readwrite")
2095
1064
    def LastCheckedOK_dbus_property(self, value=None):
2096
1065
        if value is not None:
2097
1066
            self.checked_ok()
2098
1067
            return
2099
 
        return datetime_to_dbus(self.last_checked_ok)
2100
 
 
2101
 
    # LastCheckerStatus - property
2102
 
    @dbus_service_property(_interface, signature="n", access="read")
2103
 
    def LastCheckerStatus_dbus_property(self):
2104
 
        return dbus.Int16(self.last_checker_status)
2105
 
 
2106
 
    # Expires - property
2107
 
    @dbus_service_property(_interface, signature="s", access="read")
2108
 
    def Expires_dbus_property(self):
2109
 
        return datetime_to_dbus(self.expires)
2110
 
 
 
1068
        if self.last_checked_ok is None:
 
1069
            return dbus.String("")
 
1070
        return dbus.String(self._datetime_to_dbus(self
 
1071
                                                  .last_checked_ok))
 
1072
    
2111
1073
    # LastApprovalRequest - property
2112
1074
    @dbus_service_property(_interface, signature="s", access="read")
2113
1075
    def LastApprovalRequest_dbus_property(self):
2114
 
        return datetime_to_dbus(self.last_approval_request)
2115
 
 
 
1076
        if self.last_approval_request is None:
 
1077
            return dbus.String("")
 
1078
        return dbus.String(self.
 
1079
                           _datetime_to_dbus(self
 
1080
                                             .last_approval_request))
 
1081
    
2116
1082
    # Timeout - property
2117
 
    @dbus_service_property(_interface,
2118
 
                           signature="t",
 
1083
    @dbus_service_property(_interface, signature="t",
2119
1084
                           access="readwrite")
2120
1085
    def Timeout_dbus_property(self, value=None):
2121
1086
        if value is None:       # get
2122
 
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
 
        old_timeout = self.timeout
 
1087
            return dbus.UInt64(self.timeout_milliseconds())
2124
1088
        self.timeout = datetime.timedelta(0, 0, 0, value)
2125
 
        # Reschedule disabling
2126
 
        if self.enabled:
2127
 
            now = datetime.datetime.utcnow()
2128
 
            self.expires += self.timeout - old_timeout
2129
 
            if self.expires <= now:
2130
 
                # The timeout has passed
2131
 
                self.disable()
2132
 
            else:
2133
 
                if (getattr(self, "disable_initiator_tag", None)
2134
 
                    is None):
2135
 
                    return
2136
 
                GLib.source_remove(self.disable_initiator_tag)
2137
 
                self.disable_initiator_tag = GLib.timeout_add(
2138
 
                    int((self.expires - now).total_seconds() * 1000),
2139
 
                    self.disable)
2140
 
 
2141
 
    # ExtendedTimeout - property
2142
 
    @dbus_service_property(_interface,
2143
 
                           signature="t",
2144
 
                           access="readwrite")
2145
 
    def ExtendedTimeout_dbus_property(self, value=None):
2146
 
        if value is None:       # get
2147
 
            return dbus.UInt64(self.extended_timeout.total_seconds()
2148
 
                               * 1000)
2149
 
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
 
 
 
1089
        # Emit D-Bus signal
 
1090
        self.PropertyChanged(dbus.String("Timeout"),
 
1091
                             dbus.UInt64(value, variant_level=1))
 
1092
        if getattr(self, "disable_initiator_tag", None) is None:
 
1093
            return
 
1094
        # Reschedule timeout
 
1095
        gobject.source_remove(self.disable_initiator_tag)
 
1096
        self.disable_initiator_tag = None
 
1097
        time_to_die = (self.
 
1098
                       _timedelta_to_milliseconds((self
 
1099
                                                   .last_checked_ok
 
1100
                                                   + self.timeout)
 
1101
                                                  - datetime.datetime
 
1102
                                                  .utcnow()))
 
1103
        if time_to_die <= 0:
 
1104
            # The timeout has passed
 
1105
            self.disable()
 
1106
        else:
 
1107
            self.disable_initiator_tag = (gobject.timeout_add
 
1108
                                          (time_to_die, self.disable))
 
1109
    
2151
1110
    # Interval - property
2152
 
    @dbus_service_property(_interface,
2153
 
                           signature="t",
 
1111
    @dbus_service_property(_interface, signature="t",
2154
1112
                           access="readwrite")
2155
1113
    def Interval_dbus_property(self, value=None):
2156
1114
        if value is None:       # get
2157
 
            return dbus.UInt64(self.interval.total_seconds() * 1000)
 
1115
            return dbus.UInt64(self.interval_milliseconds())
2158
1116
        self.interval = datetime.timedelta(0, 0, 0, value)
 
1117
        # Emit D-Bus signal
 
1118
        self.PropertyChanged(dbus.String("Interval"),
 
1119
                             dbus.UInt64(value, variant_level=1))
2159
1120
        if getattr(self, "checker_initiator_tag", None) is None:
2160
1121
            return
2161
 
        if self.enabled:
2162
 
            # Reschedule checker run
2163
 
            GLib.source_remove(self.checker_initiator_tag)
2164
 
            self.checker_initiator_tag = GLib.timeout_add(
2165
 
                value, self.start_checker)
2166
 
            self.start_checker()  # Start one now, too
 
1122
        # Reschedule checker run
 
1123
        gobject.source_remove(self.checker_initiator_tag)
 
1124
        self.checker_initiator_tag = (gobject.timeout_add
 
1125
                                      (value, self.start_checker))
 
1126
        self.start_checker()    # Start one now, too
2167
1127
 
2168
1128
    # Checker - property
2169
 
    @dbus_service_property(_interface,
2170
 
                           signature="s",
 
1129
    @dbus_service_property(_interface, signature="s",
2171
1130
                           access="readwrite")
2172
1131
    def Checker_dbus_property(self, value=None):
2173
1132
        if value is None:       # get
2174
1133
            return dbus.String(self.checker_command)
2175
 
        self.checker_command = str(value)
2176
 
 
 
1134
        self.checker_command = value
 
1135
        # Emit D-Bus signal
 
1136
        self.PropertyChanged(dbus.String("Checker"),
 
1137
                             dbus.String(self.checker_command,
 
1138
                                         variant_level=1))
 
1139
    
2177
1140
    # CheckerRunning - property
2178
 
    @dbus_service_property(_interface,
2179
 
                           signature="b",
 
1141
    @dbus_service_property(_interface, signature="b",
2180
1142
                           access="readwrite")
2181
1143
    def CheckerRunning_dbus_property(self, value=None):
2182
1144
        if value is None:       # get
2185
1147
            self.start_checker()
2186
1148
        else:
2187
1149
            self.stop_checker()
2188
 
 
 
1150
    
2189
1151
    # ObjectPath - property
2190
 
    @dbus_annotations(
2191
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
 
         "org.freedesktop.DBus.Deprecated": "true"})
2193
1152
    @dbus_service_property(_interface, signature="o", access="read")
2194
1153
    def ObjectPath_dbus_property(self):
2195
 
        return self.dbus_object_path  # is already a dbus.ObjectPath
2196
 
 
 
1154
        return self.dbus_object_path # is already a dbus.ObjectPath
 
1155
    
2197
1156
    # Secret = property
2198
 
    @dbus_annotations(
2199
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
 
         "invalidates"})
2201
 
    @dbus_service_property(_interface,
2202
 
                           signature="ay",
2203
 
                           access="write",
2204
 
                           byte_arrays=True)
 
1157
    @dbus_service_property(_interface, signature="ay",
 
1158
                           access="write", byte_arrays=True)
2205
1159
    def Secret_dbus_property(self, value):
2206
 
        self.secret = bytes(value)
2207
 
 
 
1160
        self.secret = str(value)
 
1161
    
2208
1162
    del _interface
2209
1163
 
2210
1164
 
2211
1165
class ProxyClient(object):
2212
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
1166
    def __init__(self, child_pipe, fpr, address):
2213
1167
        self._pipe = child_pipe
2214
 
        self._pipe.send(('init', key_id, fpr, address))
 
1168
        self._pipe.send(('init', fpr, address))
2215
1169
        if not self._pipe.recv():
2216
 
            raise KeyError(key_id or fpr)
 
1170
            raise KeyError()
2217
1171
 
2218
1172
    def __getattribute__(self, name):
2219
 
        if name == '_pipe':
 
1173
        if(name == '_pipe'):
2220
1174
            return super(ProxyClient, self).__getattribute__(name)
2221
1175
        self._pipe.send(('getattr', name))
2222
1176
        data = self._pipe.recv()
2223
1177
        if data[0] == 'data':
2224
1178
            return data[1]
2225
1179
        if data[0] == 'function':
2226
 
 
2227
1180
            def func(*args, **kwargs):
2228
1181
                self._pipe.send(('funcall', name, args, kwargs))
2229
1182
                return self._pipe.recv()[1]
2230
 
 
2231
1183
            return func
2232
1184
 
2233
1185
    def __setattr__(self, name, value):
2234
 
        if name == '_pipe':
 
1186
        if(name == '_pipe'):
2235
1187
            return super(ProxyClient, self).__setattr__(name, value)
2236
1188
        self._pipe.send(('setattr', name, value))
2237
1189
 
2238
1190
 
2239
1191
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1192
    """A class to handle client connections.
2241
 
 
 
1193
    
2242
1194
    Instantiated once for each connection to handle it.
2243
1195
    Note: This will run in its own forked process."""
2244
 
 
 
1196
    
2245
1197
    def handle(self):
2246
1198
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1199
            logger.info("TCP connection from: %s",
2248
 
                        str(self.client_address))
 
1200
                        unicode(self.client_address))
2249
1201
            logger.debug("Pipe FD: %d",
2250
1202
                         self.server.child_pipe.fileno())
2251
1203
 
2252
 
            session = gnutls.ClientSession(self.request)
2253
 
 
2254
 
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
 
            #                       "+AES-256-CBC", "+SHA1",
2256
 
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
2257
 
            #                       "+DHE-DSS"))
 
1204
            session = (gnutls.connection
 
1205
                       .ClientSession(self.request,
 
1206
                                      gnutls.connection
 
1207
                                      .X509Credentials()))
 
1208
 
 
1209
            # Note: gnutls.connection.X509Credentials is really a
 
1210
            # generic GnuTLS certificate credentials object so long as
 
1211
            # no X.509 keys are added to it.  Therefore, we can use it
 
1212
            # here despite using OpenPGP certificates.
 
1213
 
 
1214
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
1215
            #                      "+AES-256-CBC", "+SHA1",
 
1216
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
1217
            #                      "+DHE-DSS"))
2258
1218
            # Use a fallback default, since this MUST be set.
2259
1219
            priority = self.server.gnutls_priority
2260
1220
            if priority is None:
2261
1221
                priority = "NORMAL"
2262
 
            gnutls.priority_set_direct(session._c_object,
2263
 
                                       priority.encode("utf-8"),
2264
 
                                       None)
 
1222
            (gnutls.library.functions
 
1223
             .gnutls_priority_set_direct(session._c_object,
 
1224
                                         priority, None))
2265
1225
 
2266
1226
            # Start communication using the Mandos protocol
2267
1227
            # Get protocol number
2269
1229
            logger.debug("Protocol version: %r", line)
2270
1230
            try:
2271
1231
                if int(line.strip().split()[0]) > 1:
2272
 
                    raise RuntimeError(line)
 
1232
                    raise RuntimeError
2273
1233
            except (ValueError, IndexError, RuntimeError) as error:
2274
1234
                logger.error("Unknown protocol version: %s", error)
2275
1235
                return
2277
1237
            # Start GnuTLS connection
2278
1238
            try:
2279
1239
                session.handshake()
2280
 
            except gnutls.Error as error:
 
1240
            except gnutls.errors.GNUTLSError as error:
2281
1241
                logger.warning("Handshake failed: %s", error)
2282
1242
                # Do not run session.bye() here: the session is not
2283
1243
                # established.  Just abandon the request.
2286
1246
 
2287
1247
            approval_required = False
2288
1248
            try:
2289
 
                if gnutls.has_rawpk:
2290
 
                    fpr = ""
2291
 
                    try:
2292
 
                        key_id = self.key_id(
2293
 
                            self.peer_certificate(session))
2294
 
                    except (TypeError, gnutls.Error) as error:
2295
 
                        logger.warning("Bad certificate: %s", error)
2296
 
                        return
2297
 
                    logger.debug("Key ID: %s", key_id)
2298
 
 
2299
 
                else:
2300
 
                    key_id = ""
2301
 
                    try:
2302
 
                        fpr = self.fingerprint(
2303
 
                            self.peer_certificate(session))
2304
 
                    except (TypeError, gnutls.Error) as error:
2305
 
                        logger.warning("Bad certificate: %s", error)
2306
 
                        return
2307
 
                    logger.debug("Fingerprint: %s", fpr)
2308
 
 
2309
 
                try:
2310
 
                    client = ProxyClient(child_pipe, key_id, fpr,
 
1249
                try:
 
1250
                    fpr = self.fingerprint(self.peer_certificate
 
1251
                                           (session))
 
1252
                except (TypeError,
 
1253
                        gnutls.errors.GNUTLSError) as error:
 
1254
                    logger.warning("Bad certificate: %s", error)
 
1255
                    return
 
1256
                logger.debug("Fingerprint: %s", fpr)
 
1257
 
 
1258
                try:
 
1259
                    client = ProxyClient(child_pipe, fpr,
2311
1260
                                         self.client_address)
2312
1261
                except KeyError:
2313
1262
                    return
2314
 
 
 
1263
                
2315
1264
                if client.approval_delay:
2316
1265
                    delay = client.approval_delay
2317
1266
                    client.approvals_pending += 1
2318
1267
                    approval_required = True
2319
 
 
 
1268
                
2320
1269
                while True:
2321
1270
                    if not client.enabled:
2322
1271
                        logger.info("Client %s is disabled",
2323
 
                                    client.name)
 
1272
                                       client.name)
2324
1273
                        if self.server.use_dbus:
2325
1274
                            # Emit D-Bus signal
2326
 
                            client.Rejected("Disabled")
 
1275
                            client.Rejected("Disabled")                    
2327
1276
                        return
2328
 
 
2329
 
                    if client.approved or not client.approval_delay:
2330
 
                        # We are approved or approval is disabled
 
1277
                    
 
1278
                    if client._approved or not client.approval_delay:
 
1279
                        #We are approved or approval is disabled
2331
1280
                        break
2332
 
                    elif client.approved is None:
 
1281
                    elif client._approved is None:
2333
1282
                        logger.info("Client %s needs approval",
2334
1283
                                    client.name)
2335
1284
                        if self.server.use_dbus:
2336
1285
                            # Emit D-Bus signal
2337
1286
                            client.NeedApproval(
2338
 
                                client.approval_delay.total_seconds()
2339
 
                                * 1000, client.approved_by_default)
 
1287
                                client.approval_delay_milliseconds(),
 
1288
                                client.approved_by_default)
2340
1289
                    else:
2341
1290
                        logger.warning("Client %s was not approved",
2342
1291
                                       client.name)
2344
1293
                            # Emit D-Bus signal
2345
1294
                            client.Rejected("Denied")
2346
1295
                        return
2347
 
 
2348
 
                    # wait until timeout or approved
 
1296
                    
 
1297
                    #wait until timeout or approved
 
1298
                    #x = float(client._timedelta_to_milliseconds(delay))
2349
1299
                    time = datetime.datetime.now()
2350
1300
                    client.changedstate.acquire()
2351
 
                    client.changedstate.wait(delay.total_seconds())
 
1301
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2352
1302
                    client.changedstate.release()
2353
1303
                    time2 = datetime.datetime.now()
2354
1304
                    if (time2 - time) >= delay:
2364
1314
                            break
2365
1315
                    else:
2366
1316
                        delay -= time2 - time
2367
 
 
2368
 
                try:
2369
 
                    session.send(client.secret)
2370
 
                except gnutls.Error as error:
2371
 
                    logger.warning("gnutls send failed",
2372
 
                                   exc_info=error)
2373
 
                    return
 
1317
                
 
1318
                sent_size = 0
 
1319
                while sent_size < len(client.secret):
 
1320
                    try:
 
1321
                        sent = session.send(client.secret[sent_size:])
 
1322
                    except gnutls.errors.GNUTLSError as error:
 
1323
                        logger.warning("gnutls send failed")
 
1324
                        return
 
1325
                    logger.debug("Sent: %d, remaining: %d",
 
1326
                                 sent, len(client.secret)
 
1327
                                 - (sent_size + sent))
 
1328
                    sent_size += sent
2374
1329
 
2375
1330
                logger.info("Sending secret to %s", client.name)
2376
 
                # bump the timeout using extended_timeout
2377
 
                client.bump_timeout(client.extended_timeout)
 
1331
                # bump the timeout as if seen
 
1332
                client.checked_ok()
2378
1333
                if self.server.use_dbus:
2379
1334
                    # Emit D-Bus signal
2380
1335
                    client.GotSecret()
2381
 
 
 
1336
            
2382
1337
            finally:
2383
1338
                if approval_required:
2384
1339
                    client.approvals_pending -= 1
2385
1340
                try:
2386
1341
                    session.bye()
2387
 
                except gnutls.Error as error:
2388
 
                    logger.warning("GnuTLS bye failed",
2389
 
                                   exc_info=error)
2390
 
 
 
1342
                except gnutls.errors.GNUTLSError as error:
 
1343
                    logger.warning("GnuTLS bye failed")
 
1344
    
2391
1345
    @staticmethod
2392
1346
    def peer_certificate(session):
2393
 
        "Return the peer's certificate as a bytestring"
2394
 
        try:
2395
 
            cert_type = gnutls.certificate_type_get2(session._c_object,
2396
 
                                                     gnutls.CTYPE_PEERS)
2397
 
        except AttributeError:
2398
 
            cert_type = gnutls.certificate_type_get(session._c_object)
2399
 
        if gnutls.has_rawpk:
2400
 
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
 
        else:
2402
 
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
 
        # If not a valid certificate type...
2404
 
        if cert_type not in valid_cert_types:
2405
 
            logger.info("Cert type %r not in %r", cert_type,
2406
 
                        valid_cert_types)
2407
 
            # ...return invalid data
2408
 
            return b""
 
1347
        "Return the peer's OpenPGP certificate as a bytestring"
 
1348
        # If not an OpenPGP certificate...
 
1349
        if (gnutls.library.functions
 
1350
            .gnutls_certificate_type_get(session._c_object)
 
1351
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
1352
            # ...do the normal thing
 
1353
            return session.peer_certificate
2409
1354
        list_size = ctypes.c_uint(1)
2410
 
        cert_list = (gnutls.certificate_get_peers
 
1355
        cert_list = (gnutls.library.functions
 
1356
                     .gnutls_certificate_get_peers
2411
1357
                     (session._c_object, ctypes.byref(list_size)))
2412
1358
        if not bool(cert_list) and list_size.value != 0:
2413
 
            raise gnutls.Error("error getting peer certificate")
 
1359
            raise gnutls.errors.GNUTLSError("error getting peer"
 
1360
                                            " certificate")
2414
1361
        if list_size.value == 0:
2415
1362
            return None
2416
1363
        cert = cert_list[0]
2417
1364
        return ctypes.string_at(cert.data, cert.size)
2418
 
 
2419
 
    @staticmethod
2420
 
    def key_id(certificate):
2421
 
        "Convert a certificate bytestring to a hexdigit key ID"
2422
 
        # New GnuTLS "datum" with the public key
2423
 
        datum = gnutls.datum_t(
2424
 
            ctypes.cast(ctypes.c_char_p(certificate),
2425
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2426
 
            ctypes.c_uint(len(certificate)))
2427
 
        # XXX all these need to be created in the gnutls "module"
2428
 
        # New empty GnuTLS certificate
2429
 
        pubkey = gnutls.pubkey_t()
2430
 
        gnutls.pubkey_init(ctypes.byref(pubkey))
2431
 
        # Import the raw public key into the certificate
2432
 
        gnutls.pubkey_import(pubkey,
2433
 
                             ctypes.byref(datum),
2434
 
                             gnutls.X509_FMT_DER)
2435
 
        # New buffer for the key ID
2436
 
        buf = ctypes.create_string_buffer(32)
2437
 
        buf_len = ctypes.c_size_t(len(buf))
2438
 
        # Get the key ID from the raw public key into the buffer
2439
 
        gnutls.pubkey_get_key_id(pubkey,
2440
 
                                 gnutls.KEYID_USE_SHA256,
2441
 
                                 ctypes.cast(ctypes.byref(buf),
2442
 
                                             ctypes.POINTER(ctypes.c_ubyte)),
2443
 
                                 ctypes.byref(buf_len))
2444
 
        # Deinit the certificate
2445
 
        gnutls.pubkey_deinit(pubkey)
2446
 
 
2447
 
        # Convert the buffer to a Python bytestring
2448
 
        key_id = ctypes.string_at(buf, buf_len.value)
2449
 
        # Convert the bytestring to hexadecimal notation
2450
 
        hex_key_id = binascii.hexlify(key_id).upper()
2451
 
        return hex_key_id
2452
 
 
 
1365
    
2453
1366
    @staticmethod
2454
1367
    def fingerprint(openpgp):
2455
1368
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1369
        # New GnuTLS "datum" with the OpenPGP public key
2457
 
        datum = gnutls.datum_t(
2458
 
            ctypes.cast(ctypes.c_char_p(openpgp),
2459
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2460
 
            ctypes.c_uint(len(openpgp)))
 
1370
        datum = (gnutls.library.types
 
1371
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
 
1372
                                             ctypes.POINTER
 
1373
                                             (ctypes.c_ubyte)),
 
1374
                                 ctypes.c_uint(len(openpgp))))
2461
1375
        # New empty GnuTLS certificate
2462
 
        crt = gnutls.openpgp_crt_t()
2463
 
        gnutls.openpgp_crt_init(ctypes.byref(crt))
 
1376
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
 
1377
        (gnutls.library.functions
 
1378
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1379
        # Import the OpenPGP public key into the certificate
2465
 
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
 
                                  gnutls.OPENPGP_FMT_RAW)
 
1380
        (gnutls.library.functions
 
1381
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
 
1382
                                    gnutls.library.constants
 
1383
                                    .GNUTLS_OPENPGP_FMT_RAW))
2467
1384
        # Verify the self signature in the key
2468
1385
        crtverify = ctypes.c_uint()
2469
 
        gnutls.openpgp_crt_verify_self(crt, 0,
2470
 
                                       ctypes.byref(crtverify))
 
1386
        (gnutls.library.functions
 
1387
         .gnutls_openpgp_crt_verify_self(crt, 0,
 
1388
                                         ctypes.byref(crtverify)))
2471
1389
        if crtverify.value != 0:
2472
 
            gnutls.openpgp_crt_deinit(crt)
2473
 
            raise gnutls.CertificateSecurityError(code
2474
 
                                                  =crtverify.value)
 
1390
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
1391
            raise (gnutls.errors.CertificateSecurityError
 
1392
                   ("Verify failed"))
2475
1393
        # New buffer for the fingerprint
2476
1394
        buf = ctypes.create_string_buffer(20)
2477
1395
        buf_len = ctypes.c_size_t()
2478
1396
        # Get the fingerprint from the certificate into the buffer
2479
 
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
 
                                           ctypes.byref(buf_len))
 
1397
        (gnutls.library.functions
 
1398
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
1399
                                             ctypes.byref(buf_len)))
2481
1400
        # Deinit the certificate
2482
 
        gnutls.openpgp_crt_deinit(crt)
 
1401
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1402
        # Convert the buffer to a Python bytestring
2484
1403
        fpr = ctypes.string_at(buf, buf_len.value)
2485
1404
        # Convert the bytestring to hexadecimal notation
2486
 
        hex_fpr = binascii.hexlify(fpr).upper()
 
1405
        hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2487
1406
        return hex_fpr
2488
1407
 
2489
1408
 
2490
1409
class MultiprocessingMixIn(object):
2491
1410
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
 
 
2493
1411
    def sub_process_main(self, request, address):
2494
1412
        try:
2495
1413
            self.finish_request(request, address)
2496
 
        except Exception:
 
1414
        except:
2497
1415
            self.handle_error(request, address)
2498
1416
        self.close_request(request)
2499
 
 
 
1417
            
2500
1418
    def process_request(self, request, address):
2501
1419
        """Start a new process to process the request."""
2502
 
        proc = multiprocessing.Process(target=self.sub_process_main,
2503
 
                                       args=(request, address))
2504
 
        proc.start()
2505
 
        return proc
2506
 
 
 
1420
        multiprocessing.Process(target = self.sub_process_main,
 
1421
                                args = (request, address)).start()
2507
1422
 
2508
1423
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1424
    """ adds a pipe to the MixIn """
2510
 
 
2511
1425
    def process_request(self, request, client_address):
2512
1426
        """Overrides and wraps the original process_request().
2513
 
 
 
1427
        
2514
1428
        This function creates a new pipe in self.pipe
2515
1429
        """
2516
1430
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1431
 
2518
 
        proc = MultiprocessingMixIn.process_request(self, request,
2519
 
                                                    client_address)
 
1432
        super(MultiprocessingMixInWithPipe,
 
1433
              self).process_request(request, client_address)
2520
1434
        self.child_pipe.close()
2521
 
        self.add_pipe(parent_pipe, proc)
 
1435
        self.add_pipe(parent_pipe)
2522
1436
 
2523
 
    def add_pipe(self, parent_pipe, proc):
 
1437
    def add_pipe(self, parent_pipe):
2524
1438
        """Dummy function; override as necessary"""
2525
 
        raise NotImplementedError()
2526
 
 
 
1439
        raise NotImplementedError
2527
1440
 
2528
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1442
                     socketserver.TCPServer, object):
2530
1443
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2531
 
 
 
1444
    
2532
1445
    Attributes:
2533
1446
        enabled:        Boolean; whether this server is activated yet
2534
1447
        interface:      None or a network interface name (string)
2535
1448
        use_ipv6:       Boolean; to use IPv6 or not
2536
1449
    """
2537
 
 
2538
1450
    def __init__(self, server_address, RequestHandlerClass,
2539
 
                 interface=None,
2540
 
                 use_ipv6=True,
2541
 
                 socketfd=None):
2542
 
        """If socketfd is set, use that file descriptor instead of
2543
 
        creating a new one with socket.socket().
2544
 
        """
 
1451
                 interface=None, use_ipv6=True):
2545
1452
        self.interface = interface
2546
1453
        if use_ipv6:
2547
1454
            self.address_family = socket.AF_INET6
2548
 
        if socketfd is not None:
2549
 
            # Save the file descriptor
2550
 
            self.socketfd = socketfd
2551
 
            # Save the original socket.socket() function
2552
 
            self.socket_socket = socket.socket
2553
 
 
2554
 
            # To implement --socket, we monkey patch socket.socket.
2555
 
            #
2556
 
            # (When socketserver.TCPServer is a new-style class, we
2557
 
            # could make self.socket into a property instead of monkey
2558
 
            # patching socket.socket.)
2559
 
            #
2560
 
            # Create a one-time-only replacement for socket.socket()
2561
 
            @functools.wraps(socket.socket)
2562
 
            def socket_wrapper(*args, **kwargs):
2563
 
                # Restore original function so subsequent calls are
2564
 
                # not affected.
2565
 
                socket.socket = self.socket_socket
2566
 
                del self.socket_socket
2567
 
                # This time only, return a new socket object from the
2568
 
                # saved file descriptor.
2569
 
                return socket.fromfd(self.socketfd, *args, **kwargs)
2570
 
            # Replace socket.socket() function with wrapper
2571
 
            socket.socket = socket_wrapper
2572
 
        # The socketserver.TCPServer.__init__ will call
2573
 
        # socket.socket(), which might be our replacement,
2574
 
        # socket_wrapper(), if socketfd was set.
2575
1455
        socketserver.TCPServer.__init__(self, server_address,
2576
1456
                                        RequestHandlerClass)
2577
 
 
2578
1457
    def server_bind(self):
2579
1458
        """This overrides the normal server_bind() function
2580
1459
        to bind to an interface if one was specified, and also NOT to
2581
1460
        bind to an address or port if they were not specified."""
2582
 
        global SO_BINDTODEVICE
2583
1461
        if self.interface is not None:
2584
1462
            if SO_BINDTODEVICE is None:
2585
 
                # Fall back to a hard-coded value which seems to be
2586
 
                # common enough.
2587
 
                logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
 
                SO_BINDTODEVICE = 25
2589
 
            try:
2590
 
                self.socket.setsockopt(
2591
 
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
 
                    (self.interface + "\0").encode("utf-8"))
2593
 
            except socket.error as error:
2594
 
                if error.errno == errno.EPERM:
2595
 
                    logger.error("No permission to bind to"
2596
 
                                 " interface %s", self.interface)
2597
 
                elif error.errno == errno.ENOPROTOOPT:
2598
 
                    logger.error("SO_BINDTODEVICE not available;"
2599
 
                                 " cannot bind to interface %s",
2600
 
                                 self.interface)
2601
 
                elif error.errno == errno.ENODEV:
2602
 
                    logger.error("Interface %s does not exist,"
2603
 
                                 " cannot bind", self.interface)
2604
 
                else:
2605
 
                    raise
 
1463
                logger.error("SO_BINDTODEVICE does not exist;"
 
1464
                             " cannot bind to interface %s",
 
1465
                             self.interface)
 
1466
            else:
 
1467
                try:
 
1468
                    self.socket.setsockopt(socket.SOL_SOCKET,
 
1469
                                           SO_BINDTODEVICE,
 
1470
                                           str(self.interface
 
1471
                                               + '\0'))
 
1472
                except socket.error as error:
 
1473
                    if error[0] == errno.EPERM:
 
1474
                        logger.error("No permission to"
 
1475
                                     " bind to interface %s",
 
1476
                                     self.interface)
 
1477
                    elif error[0] == errno.ENOPROTOOPT:
 
1478
                        logger.error("SO_BINDTODEVICE not available;"
 
1479
                                     " cannot bind to interface %s",
 
1480
                                     self.interface)
 
1481
                    else:
 
1482
                        raise
2606
1483
        # Only bind(2) the socket if we really need to.
2607
1484
        if self.server_address[0] or self.server_address[1]:
2608
 
            if self.server_address[1]:
2609
 
                self.allow_reuse_address = True
2610
1485
            if not self.server_address[0]:
2611
1486
                if self.address_family == socket.AF_INET6:
2612
 
                    any_address = "::"  # in6addr_any
 
1487
                    any_address = "::" # in6addr_any
2613
1488
                else:
2614
 
                    any_address = "0.0.0.0"  # INADDR_ANY
 
1489
                    any_address = socket.INADDR_ANY
2615
1490
                self.server_address = (any_address,
2616
1491
                                       self.server_address[1])
2617
1492
            elif not self.server_address[1]:
2618
 
                self.server_address = (self.server_address[0], 0)
 
1493
                self.server_address = (self.server_address[0],
 
1494
                                       0)
2619
1495
#                 if self.interface:
2620
1496
#                     self.server_address = (self.server_address[0],
2621
1497
#                                            0, # port
2627
1503
 
2628
1504
class MandosServer(IPv6_TCPServer):
2629
1505
    """Mandos server.
2630
 
 
 
1506
    
2631
1507
    Attributes:
2632
1508
        clients:        set of Client objects
2633
1509
        gnutls_priority GnuTLS priority string
2634
1510
        use_dbus:       Boolean; to emit D-Bus signals or not
2635
 
 
2636
 
    Assumes a GLib.MainLoop event loop.
 
1511
    
 
1512
    Assumes a gobject.MainLoop event loop.
2637
1513
    """
2638
 
 
2639
1514
    def __init__(self, server_address, RequestHandlerClass,
2640
 
                 interface=None,
2641
 
                 use_ipv6=True,
2642
 
                 clients=None,
2643
 
                 gnutls_priority=None,
2644
 
                 use_dbus=True,
2645
 
                 socketfd=None):
 
1515
                 interface=None, use_ipv6=True, clients=None,
 
1516
                 gnutls_priority=None, use_dbus=True):
2646
1517
        self.enabled = False
2647
1518
        self.clients = clients
2648
1519
        if self.clients is None:
2649
 
            self.clients = {}
 
1520
            self.clients = set()
2650
1521
        self.use_dbus = use_dbus
2651
1522
        self.gnutls_priority = gnutls_priority
2652
1523
        IPv6_TCPServer.__init__(self, server_address,
2653
1524
                                RequestHandlerClass,
2654
 
                                interface=interface,
2655
 
                                use_ipv6=use_ipv6,
2656
 
                                socketfd=socketfd)
2657
 
 
 
1525
                                interface = interface,
 
1526
                                use_ipv6 = use_ipv6)
2658
1527
    def server_activate(self):
2659
1528
        if self.enabled:
2660
1529
            return socketserver.TCPServer.server_activate(self)
2661
 
 
2662
1530
    def enable(self):
2663
1531
        self.enabled = True
2664
 
 
2665
 
    def add_pipe(self, parent_pipe, proc):
 
1532
    def add_pipe(self, parent_pipe):
2666
1533
        # Call "handle_ipc" for both data and EOF events
2667
 
        GLib.io_add_watch(
2668
 
            parent_pipe.fileno(),
2669
 
            GLib.IO_IN | GLib.IO_HUP,
2670
 
            functools.partial(self.handle_ipc,
2671
 
                              parent_pipe=parent_pipe,
2672
 
                              proc=proc))
2673
 
 
2674
 
    def handle_ipc(self, source, condition,
2675
 
                   parent_pipe=None,
2676
 
                   proc=None,
 
1534
        gobject.io_add_watch(parent_pipe.fileno(),
 
1535
                             gobject.IO_IN | gobject.IO_HUP,
 
1536
                             functools.partial(self.handle_ipc,
 
1537
                                               parent_pipe = parent_pipe))
 
1538
        
 
1539
    def handle_ipc(self, source, condition, parent_pipe=None,
2677
1540
                   client_object=None):
2678
 
        # error, or the other end of multiprocessing.Pipe has closed
2679
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
2680
 
            # Wait for other process to exit
2681
 
            proc.join()
 
1541
        condition_names = {
 
1542
            gobject.IO_IN: "IN",   # There is data to read.
 
1543
            gobject.IO_OUT: "OUT", # Data can be written (without
 
1544
                                    # blocking).
 
1545
            gobject.IO_PRI: "PRI", # There is urgent data to read.
 
1546
            gobject.IO_ERR: "ERR", # Error condition.
 
1547
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
 
1548
                                    # broken, usually for pipes and
 
1549
                                    # sockets).
 
1550
            }
 
1551
        conditions_string = ' | '.join(name
 
1552
                                       for cond, name in
 
1553
                                       condition_names.iteritems()
 
1554
                                       if cond & condition)
 
1555
        # error or the other end of multiprocessing.Pipe has closed
 
1556
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2682
1557
            return False
2683
 
 
 
1558
        
2684
1559
        # Read a request from the child
2685
1560
        request = parent_pipe.recv()
2686
1561
        command = request[0]
2687
 
 
 
1562
        
2688
1563
        if command == 'init':
2689
 
            key_id = request[1].decode("ascii")
2690
 
            fpr = request[2].decode("ascii")
2691
 
            address = request[3]
2692
 
 
2693
 
            for c in self.clients.values():
2694
 
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2695
 
                    continue
2696
 
                if key_id and c.key_id == key_id:
2697
 
                    client = c
2698
 
                    break
2699
 
                if fpr and c.fingerprint == fpr:
 
1564
            fpr = request[1]
 
1565
            address = request[2]
 
1566
            
 
1567
            for c in self.clients:
 
1568
                if c.fingerprint == fpr:
2700
1569
                    client = c
2701
1570
                    break
2702
1571
            else:
2703
 
                logger.info("Client not found for key ID: %s, address"
2704
 
                            ": %s", key_id or fpr, address)
 
1572
                logger.info("Client not found for fingerprint: %s, ad"
 
1573
                            "dress: %s", fpr, address)
2705
1574
                if self.use_dbus:
2706
1575
                    # Emit D-Bus signal
2707
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
2708
 
                                                       address[0])
 
1576
                    mandos_dbus_service.ClientNotFound(fpr, address[0])
2709
1577
                parent_pipe.send(False)
2710
1578
                return False
2711
 
 
2712
 
            GLib.io_add_watch(
2713
 
                parent_pipe.fileno(),
2714
 
                GLib.IO_IN | GLib.IO_HUP,
2715
 
                functools.partial(self.handle_ipc,
2716
 
                                  parent_pipe=parent_pipe,
2717
 
                                  proc=proc,
2718
 
                                  client_object=client))
 
1579
            
 
1580
            gobject.io_add_watch(parent_pipe.fileno(),
 
1581
                                 gobject.IO_IN | gobject.IO_HUP,
 
1582
                                 functools.partial(self.handle_ipc,
 
1583
                                                   parent_pipe = parent_pipe,
 
1584
                                                   client_object = client))
2719
1585
            parent_pipe.send(True)
2720
 
            # remove the old hook in favor of the new above hook on
2721
 
            # same fileno
 
1586
            # remove the old hook in favor of the new above hook on same fileno
2722
1587
            return False
2723
1588
        if command == 'funcall':
2724
1589
            funcname = request[1]
2725
1590
            args = request[2]
2726
1591
            kwargs = request[3]
2727
 
 
2728
 
            parent_pipe.send(('data', getattr(client_object,
2729
 
                                              funcname)(*args,
2730
 
                                                        **kwargs)))
 
1592
            
 
1593
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2731
1594
 
2732
1595
        if command == 'getattr':
2733
1596
            attrname = request[1]
2734
 
            if isinstance(client_object.__getattribute__(attrname),
2735
 
                          collections.Callable):
2736
 
                parent_pipe.send(('function', ))
 
1597
            if callable(client_object.__getattribute__(attrname)):
 
1598
                parent_pipe.send(('function',))
2737
1599
            else:
2738
 
                parent_pipe.send((
2739
 
                    'data', client_object.__getattribute__(attrname)))
2740
 
 
 
1600
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
 
1601
        
2741
1602
        if command == 'setattr':
2742
1603
            attrname = request[1]
2743
1604
            value = request[2]
2746
1607
        return True
2747
1608
 
2748
1609
 
2749
 
def rfc3339_duration_to_delta(duration):
2750
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2751
 
 
2752
 
    >>> rfc3339_duration_to_delta("P7D")
2753
 
    datetime.timedelta(7)
2754
 
    >>> rfc3339_duration_to_delta("PT60S")
2755
 
    datetime.timedelta(0, 60)
2756
 
    >>> rfc3339_duration_to_delta("PT60M")
2757
 
    datetime.timedelta(0, 3600)
2758
 
    >>> rfc3339_duration_to_delta("PT24H")
2759
 
    datetime.timedelta(1)
2760
 
    >>> rfc3339_duration_to_delta("P1W")
2761
 
    datetime.timedelta(7)
2762
 
    >>> rfc3339_duration_to_delta("PT5M30S")
2763
 
    datetime.timedelta(0, 330)
2764
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2765
 
    datetime.timedelta(1, 200)
2766
 
    """
2767
 
 
2768
 
    # Parsing an RFC 3339 duration with regular expressions is not
2769
 
    # possible - there would have to be multiple places for the same
2770
 
    # values, like seconds.  The current code, while more esoteric, is
2771
 
    # cleaner without depending on a parsing library.  If Python had a
2772
 
    # built-in library for parsing we would use it, but we'd like to
2773
 
    # avoid excessive use of external libraries.
2774
 
 
2775
 
    # New type for defining tokens, syntax, and semantics all-in-one
2776
 
    Token = collections.namedtuple("Token", (
2777
 
        "regexp",  # To match token; if "value" is not None, must have
2778
 
                   # a "group" containing digits
2779
 
        "value",   # datetime.timedelta or None
2780
 
        "followers"))           # Tokens valid after this token
2781
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
2782
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
2783
 
    token_end = Token(re.compile(r"$"), None, frozenset())
2784
 
    token_second = Token(re.compile(r"(\d+)S"),
2785
 
                         datetime.timedelta(seconds=1),
2786
 
                         frozenset((token_end, )))
2787
 
    token_minute = Token(re.compile(r"(\d+)M"),
2788
 
                         datetime.timedelta(minutes=1),
2789
 
                         frozenset((token_second, token_end)))
2790
 
    token_hour = Token(re.compile(r"(\d+)H"),
2791
 
                       datetime.timedelta(hours=1),
2792
 
                       frozenset((token_minute, token_end)))
2793
 
    token_time = Token(re.compile(r"T"),
2794
 
                       None,
2795
 
                       frozenset((token_hour, token_minute,
2796
 
                                  token_second)))
2797
 
    token_day = Token(re.compile(r"(\d+)D"),
2798
 
                      datetime.timedelta(days=1),
2799
 
                      frozenset((token_time, token_end)))
2800
 
    token_month = Token(re.compile(r"(\d+)M"),
2801
 
                        datetime.timedelta(weeks=4),
2802
 
                        frozenset((token_day, token_end)))
2803
 
    token_year = Token(re.compile(r"(\d+)Y"),
2804
 
                       datetime.timedelta(weeks=52),
2805
 
                       frozenset((token_month, token_end)))
2806
 
    token_week = Token(re.compile(r"(\d+)W"),
2807
 
                       datetime.timedelta(weeks=1),
2808
 
                       frozenset((token_end, )))
2809
 
    token_duration = Token(re.compile(r"P"), None,
2810
 
                           frozenset((token_year, token_month,
2811
 
                                      token_day, token_time,
2812
 
                                      token_week)))
2813
 
    # Define starting values:
2814
 
    # Value so far
2815
 
    value = datetime.timedelta()
2816
 
    found_token = None
2817
 
    # Following valid tokens
2818
 
    followers = frozenset((token_duration, ))
2819
 
    # String left to parse
2820
 
    s = duration
2821
 
    # Loop until end token is found
2822
 
    while found_token is not token_end:
2823
 
        # Search for any currently valid tokens
2824
 
        for token in followers:
2825
 
            match = token.regexp.match(s)
2826
 
            if match is not None:
2827
 
                # Token found
2828
 
                if token.value is not None:
2829
 
                    # Value found, parse digits
2830
 
                    factor = int(match.group(1), 10)
2831
 
                    # Add to value so far
2832
 
                    value += factor * token.value
2833
 
                # Strip token from string
2834
 
                s = token.regexp.sub("", s, 1)
2835
 
                # Go to found token
2836
 
                found_token = token
2837
 
                # Set valid next tokens
2838
 
                followers = found_token.followers
2839
 
                break
2840
 
        else:
2841
 
            # No currently valid tokens were found
2842
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
2843
 
                             .format(duration))
2844
 
    # End token found
2845
 
    return value
2846
 
 
2847
 
 
2848
1610
def string_to_delta(interval):
2849
1611
    """Parse a string and return a datetime.timedelta
2850
 
 
 
1612
    
2851
1613
    >>> string_to_delta('7d')
2852
1614
    datetime.timedelta(7)
2853
1615
    >>> string_to_delta('60s')
2861
1623
    >>> string_to_delta('5m 30s')
2862
1624
    datetime.timedelta(0, 330)
2863
1625
    """
2864
 
 
2865
 
    try:
2866
 
        return rfc3339_duration_to_delta(interval)
2867
 
    except ValueError:
2868
 
        pass
2869
 
 
2870
1626
    timevalue = datetime.timedelta(0)
2871
1627
    for s in interval.split():
2872
1628
        try:
2873
 
            suffix = s[-1]
 
1629
            suffix = unicode(s[-1])
2874
1630
            value = int(s[:-1])
2875
1631
            if suffix == "d":
2876
1632
                delta = datetime.timedelta(value)
2883
1639
            elif suffix == "w":
2884
1640
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2885
1641
            else:
2886
 
                raise ValueError("Unknown suffix {!r}".format(suffix))
2887
 
        except IndexError as e:
 
1642
                raise ValueError("Unknown suffix %r" % suffix)
 
1643
        except (ValueError, IndexError) as e:
2888
1644
            raise ValueError(*(e.args))
2889
1645
        timevalue += delta
2890
1646
    return timevalue
2891
1647
 
2892
1648
 
2893
 
def daemon(nochdir=False, noclose=False):
 
1649
def if_nametoindex(interface):
 
1650
    """Call the C function if_nametoindex(), or equivalent
 
1651
    
 
1652
    Note: This function cannot accept a unicode string."""
 
1653
    global if_nametoindex
 
1654
    try:
 
1655
        if_nametoindex = (ctypes.cdll.LoadLibrary
 
1656
                          (ctypes.util.find_library("c"))
 
1657
                          .if_nametoindex)
 
1658
    except (OSError, AttributeError):
 
1659
        logger.warning("Doing if_nametoindex the hard way")
 
1660
        def if_nametoindex(interface):
 
1661
            "Get an interface index the hard way, i.e. using fcntl()"
 
1662
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
 
1663
            with contextlib.closing(socket.socket()) as s:
 
1664
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
1665
                                    struct.pack(str("16s16x"),
 
1666
                                                interface))
 
1667
            interface_index = struct.unpack(str("I"),
 
1668
                                            ifreq[16:20])[0]
 
1669
            return interface_index
 
1670
    return if_nametoindex(interface)
 
1671
 
 
1672
 
 
1673
def daemon(nochdir = False, noclose = False):
2894
1674
    """See daemon(3).  Standard BSD Unix function.
2895
 
 
 
1675
    
2896
1676
    This should really exist as os.daemon, but it doesn't (yet)."""
2897
1677
    if os.fork():
2898
1678
        sys.exit()
2903
1683
        sys.exit()
2904
1684
    if not noclose:
2905
1685
        # Close all standard open file descriptors
2906
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1686
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2907
1687
        if not stat.S_ISCHR(os.fstat(null).st_mode):
2908
1688
            raise OSError(errno.ENODEV,
2909
 
                          "{} not a character device"
2910
 
                          .format(os.devnull))
 
1689
                          "%s not a character device"
 
1690
                          % os.path.devnull)
2911
1691
        os.dup2(null, sys.stdin.fileno())
2912
1692
        os.dup2(null, sys.stdout.fileno())
2913
1693
        os.dup2(null, sys.stderr.fileno())
2916
1696
 
2917
1697
 
2918
1698
def main():
2919
 
 
 
1699
    
2920
1700
    ##################################################################
2921
1701
    # Parsing of options, both command line and config file
2922
 
 
 
1702
    
2923
1703
    parser = argparse.ArgumentParser()
2924
1704
    parser.add_argument("-v", "--version", action="version",
2925
 
                        version="%(prog)s {}".format(version),
 
1705
                        version = "%%(prog)s %s" % version,
2926
1706
                        help="show version number and exit")
2927
1707
    parser.add_argument("-i", "--interface", metavar="IF",
2928
1708
                        help="Bind to interface IF")
2934
1714
                        help="Run self-test")
2935
1715
    parser.add_argument("--debug", action="store_true",
2936
1716
                        help="Debug mode; run in foreground and log"
2937
 
                        " to terminal", default=None)
 
1717
                        " to terminal")
2938
1718
    parser.add_argument("--debuglevel", metavar="LEVEL",
2939
1719
                        help="Debug level for stdout output")
2940
1720
    parser.add_argument("--priority", help="GnuTLS"
2947
1727
                        " files")
2948
1728
    parser.add_argument("--no-dbus", action="store_false",
2949
1729
                        dest="use_dbus", help="Do not provide D-Bus"
2950
 
                        " system bus interface", default=None)
 
1730
                        " system bus interface")
2951
1731
    parser.add_argument("--no-ipv6", action="store_false",
2952
 
                        dest="use_ipv6", help="Do not use IPv6",
2953
 
                        default=None)
2954
 
    parser.add_argument("--no-restore", action="store_false",
2955
 
                        dest="restore", help="Do not restore stored"
2956
 
                        " state", default=None)
2957
 
    parser.add_argument("--socket", type=int,
2958
 
                        help="Specify a file descriptor to a network"
2959
 
                        " socket to use instead of creating one")
2960
 
    parser.add_argument("--statedir", metavar="DIR",
2961
 
                        help="Directory to save/restore state in")
2962
 
    parser.add_argument("--foreground", action="store_true",
2963
 
                        help="Run in foreground", default=None)
2964
 
    parser.add_argument("--no-zeroconf", action="store_false",
2965
 
                        dest="zeroconf", help="Do not use Zeroconf",
2966
 
                        default=None)
2967
 
 
 
1732
                        dest="use_ipv6", help="Do not use IPv6")
2968
1733
    options = parser.parse_args()
2969
 
 
 
1734
    
2970
1735
    if options.check:
2971
1736
        import doctest
2972
 
        fail_count, test_count = doctest.testmod()
2973
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
2974
 
 
 
1737
        doctest.testmod()
 
1738
        sys.exit()
 
1739
    
2975
1740
    # Default values for config file for server-global settings
2976
 
    if gnutls.has_rawpk:
2977
 
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2978
 
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2979
 
    else:
2980
 
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2981
 
                    ":+SIGN-DSA-SHA256")
2982
 
    server_defaults = {"interface": "",
2983
 
                       "address": "",
2984
 
                       "port": "",
2985
 
                       "debug": "False",
2986
 
                       "priority": priority,
2987
 
                       "servicename": "Mandos",
2988
 
                       "use_dbus": "True",
2989
 
                       "use_ipv6": "True",
2990
 
                       "debuglevel": "",
2991
 
                       "restore": "True",
2992
 
                       "socket": "",
2993
 
                       "statedir": "/var/lib/mandos",
2994
 
                       "foreground": "False",
2995
 
                       "zeroconf": "True",
2996
 
                       }
2997
 
    del priority
2998
 
 
 
1741
    server_defaults = { "interface": "",
 
1742
                        "address": "",
 
1743
                        "port": "",
 
1744
                        "debug": "False",
 
1745
                        "priority":
 
1746
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
 
1747
                        "servicename": "Mandos",
 
1748
                        "use_dbus": "True",
 
1749
                        "use_ipv6": "True",
 
1750
                        "debuglevel": "",
 
1751
                        }
 
1752
    
2999
1753
    # Parse config file for server-global settings
3000
1754
    server_config = configparser.SafeConfigParser(server_defaults)
3001
1755
    del server_defaults
3002
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
1756
    server_config.read(os.path.join(options.configdir,
 
1757
                                    "mandos.conf"))
3003
1758
    # Convert the SafeConfigParser object to a dict
3004
1759
    server_settings = server_config.defaults()
3005
1760
    # Use the appropriate methods on the non-string config options
3006
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3007
 
                   "foreground", "zeroconf"):
 
1761
    for option in ("debug", "use_dbus", "use_ipv6"):
3008
1762
        server_settings[option] = server_config.getboolean("DEFAULT",
3009
1763
                                                           option)
3010
1764
    if server_settings["port"]:
3011
1765
        server_settings["port"] = server_config.getint("DEFAULT",
3012
1766
                                                       "port")
3013
 
    if server_settings["socket"]:
3014
 
        server_settings["socket"] = server_config.getint("DEFAULT",
3015
 
                                                         "socket")
3016
 
        # Later, stdin will, and stdout and stderr might, be dup'ed
3017
 
        # over with an opened os.devnull.  But we don't want this to
3018
 
        # happen with a supplied network socket.
3019
 
        if 0 <= server_settings["socket"] <= 2:
3020
 
            server_settings["socket"] = os.dup(server_settings
3021
 
                                               ["socket"])
3022
1767
    del server_config
3023
 
 
 
1768
    
3024
1769
    # Override the settings from the config file with command line
3025
1770
    # options, if set.
3026
1771
    for option in ("interface", "address", "port", "debug",
3027
 
                   "priority", "servicename", "configdir", "use_dbus",
3028
 
                   "use_ipv6", "debuglevel", "restore", "statedir",
3029
 
                   "socket", "foreground", "zeroconf"):
 
1772
                   "priority", "servicename", "configdir",
 
1773
                   "use_dbus", "use_ipv6", "debuglevel"):
3030
1774
        value = getattr(options, option)
3031
1775
        if value is not None:
3032
1776
            server_settings[option] = value
3033
1777
    del options
3034
1778
    # Force all strings to be unicode
3035
1779
    for option in server_settings.keys():
3036
 
        if isinstance(server_settings[option], bytes):
3037
 
            server_settings[option] = (server_settings[option]
3038
 
                                       .decode("utf-8"))
3039
 
    # Force all boolean options to be boolean
3040
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3041
 
                   "foreground", "zeroconf"):
3042
 
        server_settings[option] = bool(server_settings[option])
3043
 
    # Debug implies foreground
3044
 
    if server_settings["debug"]:
3045
 
        server_settings["foreground"] = True
 
1780
        if type(server_settings[option]) is str:
 
1781
            server_settings[option] = unicode(server_settings[option])
3046
1782
    # Now we have our good server settings in "server_settings"
3047
 
 
 
1783
    
3048
1784
    ##################################################################
3049
 
 
3050
 
    if (not server_settings["zeroconf"]
3051
 
        and not (server_settings["port"]
3052
 
                 or server_settings["socket"] != "")):
3053
 
        parser.error("Needs port or socket to work without Zeroconf")
3054
 
 
 
1785
    
3055
1786
    # For convenience
3056
1787
    debug = server_settings["debug"]
3057
1788
    debuglevel = server_settings["debuglevel"]
3058
1789
    use_dbus = server_settings["use_dbus"]
3059
1790
    use_ipv6 = server_settings["use_ipv6"]
3060
 
    stored_state_path = os.path.join(server_settings["statedir"],
3061
 
                                     stored_state_file)
3062
 
    foreground = server_settings["foreground"]
3063
 
    zeroconf = server_settings["zeroconf"]
3064
 
 
3065
 
    if debug:
3066
 
        initlogger(debug, logging.DEBUG)
3067
 
    else:
3068
 
        if not debuglevel:
3069
 
            initlogger(debug)
3070
 
        else:
3071
 
            level = getattr(logging, debuglevel.upper())
3072
 
            initlogger(debug, level)
3073
1791
 
3074
1792
    if server_settings["servicename"] != "Mandos":
3075
 
        syslogger.setFormatter(
3076
 
            logging.Formatter('Mandos ({}) [%(process)d]:'
3077
 
                              ' %(levelname)s: %(message)s'.format(
3078
 
                                  server_settings["servicename"])))
3079
 
 
 
1793
        syslogger.setFormatter(logging.Formatter
 
1794
                               ('Mandos (%s) [%%(process)d]:'
 
1795
                                ' %%(levelname)s: %%(message)s'
 
1796
                                % server_settings["servicename"]))
 
1797
    
3080
1798
    # Parse config file with clients
3081
 
    client_config = configparser.SafeConfigParser(Client
3082
 
                                                  .client_defaults)
 
1799
    client_defaults = { "timeout": "1h",
 
1800
                        "interval": "5m",
 
1801
                        "checker": "fping -q -- %%(host)s",
 
1802
                        "host": "",
 
1803
                        "approval_delay": "0s",
 
1804
                        "approval_duration": "1s",
 
1805
                        }
 
1806
    client_config = configparser.SafeConfigParser(client_defaults)
3083
1807
    client_config.read(os.path.join(server_settings["configdir"],
3084
1808
                                    "clients.conf"))
3085
 
 
 
1809
    
3086
1810
    global mandos_dbus_service
3087
1811
    mandos_dbus_service = None
3088
 
 
3089
 
    socketfd = None
3090
 
    if server_settings["socket"] != "":
3091
 
        socketfd = server_settings["socket"]
3092
 
    tcp_server = MandosServer(
3093
 
        (server_settings["address"], server_settings["port"]),
3094
 
        ClientHandler,
3095
 
        interface=(server_settings["interface"] or None),
3096
 
        use_ipv6=use_ipv6,
3097
 
        gnutls_priority=server_settings["priority"],
3098
 
        use_dbus=use_dbus,
3099
 
        socketfd=socketfd)
3100
 
    if not foreground:
3101
 
        pidfilename = "/run/mandos.pid"
3102
 
        if not os.path.isdir("/run/."):
3103
 
            pidfilename = "/var/run/mandos.pid"
3104
 
        pidfile = None
3105
 
        try:
3106
 
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3107
 
        except IOError as e:
3108
 
            logger.error("Could not open file %r", pidfilename,
3109
 
                         exc_info=e)
3110
 
 
3111
 
    for name, group in (("_mandos", "_mandos"),
3112
 
                        ("mandos", "mandos"),
3113
 
                        ("nobody", "nogroup")):
3114
 
        try:
3115
 
            uid = pwd.getpwnam(name).pw_uid
3116
 
            gid = pwd.getpwnam(group).pw_gid
3117
 
            break
 
1812
    
 
1813
    tcp_server = MandosServer((server_settings["address"],
 
1814
                               server_settings["port"]),
 
1815
                              ClientHandler,
 
1816
                              interface=(server_settings["interface"]
 
1817
                                         or None),
 
1818
                              use_ipv6=use_ipv6,
 
1819
                              gnutls_priority=
 
1820
                              server_settings["priority"],
 
1821
                              use_dbus=use_dbus)
 
1822
    if not debug:
 
1823
        pidfilename = "/var/run/mandos.pid"
 
1824
        try:
 
1825
            pidfile = open(pidfilename, "w")
 
1826
        except IOError:
 
1827
            logger.error("Could not open file %r", pidfilename)
 
1828
    
 
1829
    try:
 
1830
        uid = pwd.getpwnam("_mandos").pw_uid
 
1831
        gid = pwd.getpwnam("_mandos").pw_gid
 
1832
    except KeyError:
 
1833
        try:
 
1834
            uid = pwd.getpwnam("mandos").pw_uid
 
1835
            gid = pwd.getpwnam("mandos").pw_gid
3118
1836
        except KeyError:
3119
 
            continue
3120
 
    else:
3121
 
        uid = 65534
3122
 
        gid = 65534
 
1837
            try:
 
1838
                uid = pwd.getpwnam("nobody").pw_uid
 
1839
                gid = pwd.getpwnam("nobody").pw_gid
 
1840
            except KeyError:
 
1841
                uid = 65534
 
1842
                gid = 65534
3123
1843
    try:
3124
1844
        os.setgid(gid)
3125
1845
        os.setuid(uid)
3126
 
        if debug:
3127
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
3128
 
                                                             gid))
3129
1846
    except OSError as error:
3130
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
3131
 
                       .format(uid, gid, os.strerror(error.errno)))
3132
 
        if error.errno != errno.EPERM:
3133
 
            raise
 
1847
        if error[0] != errno.EPERM:
 
1848
            raise error
 
1849
    
 
1850
    if not debug and not debuglevel:
 
1851
        syslogger.setLevel(logging.WARNING)
 
1852
        console.setLevel(logging.WARNING)
 
1853
    if debuglevel:
 
1854
        level = getattr(logging, debuglevel.upper())
 
1855
        syslogger.setLevel(level)
 
1856
        console.setLevel(level)
3134
1857
 
3135
1858
    if debug:
3136
1859
        # Enable all possible GnuTLS debugging
3137
 
 
 
1860
        
3138
1861
        # "Use a log level over 10 to enable all debugging options."
3139
1862
        # - GnuTLS manual
3140
 
        gnutls.global_set_log_level(11)
3141
 
 
3142
 
        @gnutls.log_func
 
1863
        gnutls.library.functions.gnutls_global_set_log_level(11)
 
1864
        
 
1865
        @gnutls.library.types.gnutls_log_func
3143
1866
        def debug_gnutls(level, string):
3144
1867
            logger.debug("GnuTLS: %s", string[:-1])
3145
 
 
3146
 
        gnutls.global_set_log_function(debug_gnutls)
3147
 
 
 
1868
        
 
1869
        (gnutls.library.functions
 
1870
         .gnutls_global_set_log_function(debug_gnutls))
 
1871
        
3148
1872
        # Redirect stdin so all checkers get /dev/null
3149
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1873
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3150
1874
        os.dup2(null, sys.stdin.fileno())
3151
1875
        if null > 2:
3152
1876
            os.close(null)
3153
 
 
 
1877
    else:
 
1878
        # No console logging
 
1879
        logger.removeHandler(console)
 
1880
    
3154
1881
    # Need to fork before connecting to D-Bus
3155
 
    if not foreground:
 
1882
    if not debug:
3156
1883
        # Close all input and output, do double fork, etc.
3157
1884
        daemon()
3158
 
 
3159
 
    # multiprocessing will use threads, so before we use GLib we need
3160
 
    # to inform GLib that threads will be used.
3161
 
    GLib.threads_init()
3162
 
 
 
1885
    
3163
1886
    global main_loop
3164
1887
    # From the Avahi example code
3165
 
    DBusGMainLoop(set_as_default=True)
3166
 
    main_loop = GLib.MainLoop()
 
1888
    DBusGMainLoop(set_as_default=True )
 
1889
    main_loop = gobject.MainLoop()
3167
1890
    bus = dbus.SystemBus()
3168
1891
    # End of Avahi example code
3169
1892
    if use_dbus:
3170
1893
        try:
3171
 
            bus_name = dbus.service.BusName("se.recompile.Mandos",
3172
 
                                            bus,
3173
 
                                            do_not_queue=True)
3174
 
            old_bus_name = dbus.service.BusName(
3175
 
                "se.bsnet.fukt.Mandos", bus,
3176
 
                do_not_queue=True)
3177
 
        except dbus.exceptions.DBusException as e:
3178
 
            logger.error("Disabling D-Bus:", exc_info=e)
 
1894
            bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
 
1895
                                            bus, do_not_queue=True)
 
1896
        except dbus.exceptions.NameExistsException as e:
 
1897
            logger.error(unicode(e) + ", disabling D-Bus")
3179
1898
            use_dbus = False
3180
1899
            server_settings["use_dbus"] = False
3181
1900
            tcp_server.use_dbus = False
3182
 
    if zeroconf:
3183
 
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3184
 
        service = AvahiServiceToSyslog(
3185
 
            name=server_settings["servicename"],
3186
 
            servicetype="_mandos._tcp",
3187
 
            protocol=protocol,
3188
 
            bus=bus)
3189
 
        if server_settings["interface"]:
3190
 
            service.interface = if_nametoindex(
3191
 
                server_settings["interface"].encode("utf-8"))
3192
 
 
 
1901
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
1902
    service = AvahiService(name = server_settings["servicename"],
 
1903
                           servicetype = "_mandos._tcp",
 
1904
                           protocol = protocol, bus = bus)
 
1905
    if server_settings["interface"]:
 
1906
        service.interface = (if_nametoindex
 
1907
                             (str(server_settings["interface"])))
 
1908
    
3193
1909
    global multiprocessing_manager
3194
1910
    multiprocessing_manager = multiprocessing.Manager()
3195
 
 
 
1911
    
3196
1912
    client_class = Client
3197
1913
    if use_dbus:
3198
 
        client_class = functools.partial(ClientDBus, bus=bus)
3199
 
 
3200
 
    client_settings = Client.config_parser(client_config)
3201
 
    old_client_settings = {}
3202
 
    clients_data = {}
3203
 
 
3204
 
    # This is used to redirect stdout and stderr for checker processes
3205
 
    global wnull
3206
 
    wnull = open(os.devnull, "w")  # A writable /dev/null
3207
 
    # Only used if server is running in foreground but not in debug
3208
 
    # mode
3209
 
    if debug or not foreground:
3210
 
        wnull.close()
3211
 
 
3212
 
    # Get client data and settings from last running state.
3213
 
    if server_settings["restore"]:
3214
 
        try:
3215
 
            with open(stored_state_path, "rb") as stored_state:
3216
 
                if sys.version_info.major == 2:
3217
 
                    clients_data, old_client_settings = pickle.load(
3218
 
                        stored_state)
3219
 
                else:
3220
 
                    bytes_clients_data, bytes_old_client_settings = (
3221
 
                        pickle.load(stored_state, encoding="bytes"))
3222
 
                    #   Fix bytes to strings
3223
 
                    #  clients_data
3224
 
                    # .keys()
3225
 
                    clients_data = {(key.decode("utf-8")
3226
 
                                     if isinstance(key, bytes)
3227
 
                                     else key): value
3228
 
                                    for key, value in
3229
 
                                    bytes_clients_data.items()}
3230
 
                    del bytes_clients_data
3231
 
                    for key in clients_data:
3232
 
                        value = {(k.decode("utf-8")
3233
 
                                  if isinstance(k, bytes) else k): v
3234
 
                                 for k, v in
3235
 
                                 clients_data[key].items()}
3236
 
                        clients_data[key] = value
3237
 
                        # .client_structure
3238
 
                        value["client_structure"] = [
3239
 
                            (s.decode("utf-8")
3240
 
                             if isinstance(s, bytes)
3241
 
                             else s) for s in
3242
 
                            value["client_structure"]]
3243
 
                        # .name & .host
3244
 
                        for k in ("name", "host"):
3245
 
                            if isinstance(value[k], bytes):
3246
 
                                value[k] = value[k].decode("utf-8")
3247
 
                        if not value.has_key("key_id"):
3248
 
                            value["key_id"] = ""
3249
 
                        elif not value.has_key("fingerprint"):
3250
 
                            value["fingerprint"] = ""
3251
 
                    #  old_client_settings
3252
 
                    # .keys()
3253
 
                    old_client_settings = {
3254
 
                        (key.decode("utf-8")
3255
 
                         if isinstance(key, bytes)
3256
 
                         else key): value
3257
 
                        for key, value in
3258
 
                        bytes_old_client_settings.items()}
3259
 
                    del bytes_old_client_settings
3260
 
                    # .host
3261
 
                    for value in old_client_settings.values():
3262
 
                        if isinstance(value["host"], bytes):
3263
 
                            value["host"] = (value["host"]
3264
 
                                             .decode("utf-8"))
3265
 
            os.remove(stored_state_path)
3266
 
        except IOError as e:
3267
 
            if e.errno == errno.ENOENT:
3268
 
                logger.warning("Could not load persistent state:"
3269
 
                               " {}".format(os.strerror(e.errno)))
3270
 
            else:
3271
 
                logger.critical("Could not load persistent state:",
3272
 
                                exc_info=e)
3273
 
                raise
3274
 
        except EOFError as e:
3275
 
            logger.warning("Could not load persistent state: "
3276
 
                           "EOFError:",
3277
 
                           exc_info=e)
3278
 
 
3279
 
    with PGPEngine() as pgp:
3280
 
        for client_name, client in clients_data.items():
3281
 
            # Skip removed clients
3282
 
            if client_name not in client_settings:
3283
 
                continue
3284
 
 
3285
 
            # Decide which value to use after restoring saved state.
3286
 
            # We have three different values: Old config file,
3287
 
            # new config file, and saved state.
3288
 
            # New config value takes precedence if it differs from old
3289
 
            # config value, otherwise use saved state.
3290
 
            for name, value in client_settings[client_name].items():
3291
 
                try:
3292
 
                    # For each value in new config, check if it
3293
 
                    # differs from the old config value (Except for
3294
 
                    # the "secret" attribute)
3295
 
                    if (name != "secret"
3296
 
                        and (value !=
3297
 
                             old_client_settings[client_name][name])):
3298
 
                        client[name] = value
3299
 
                except KeyError:
3300
 
                    pass
3301
 
 
3302
 
            # Clients who has passed its expire date can still be
3303
 
            # enabled if its last checker was successful.  A Client
3304
 
            # whose checker succeeded before we stored its state is
3305
 
            # assumed to have successfully run all checkers during
3306
 
            # downtime.
3307
 
            if client["enabled"]:
3308
 
                if datetime.datetime.utcnow() >= client["expires"]:
3309
 
                    if not client["last_checked_ok"]:
3310
 
                        logger.warning(
3311
 
                            "disabling client {} - Client never "
3312
 
                            "performed a successful checker".format(
3313
 
                                client_name))
3314
 
                        client["enabled"] = False
3315
 
                    elif client["last_checker_status"] != 0:
3316
 
                        logger.warning(
3317
 
                            "disabling client {} - Client last"
3318
 
                            " checker failed with error code"
3319
 
                            " {}".format(
3320
 
                                client_name,
3321
 
                                client["last_checker_status"]))
3322
 
                        client["enabled"] = False
3323
 
                    else:
3324
 
                        client["expires"] = (
3325
 
                            datetime.datetime.utcnow()
3326
 
                            + client["timeout"])
3327
 
                        logger.debug("Last checker succeeded,"
3328
 
                                     " keeping {} enabled".format(
3329
 
                                         client_name))
 
1914
        client_class = functools.partial(ClientDBus, bus = bus)
 
1915
    def client_config_items(config, section):
 
1916
        special_settings = {
 
1917
            "approved_by_default":
 
1918
                lambda: config.getboolean(section,
 
1919
                                          "approved_by_default"),
 
1920
            }
 
1921
        for name, value in config.items(section):
3330
1922
            try:
3331
 
                client["secret"] = pgp.decrypt(
3332
 
                    client["encrypted_secret"],
3333
 
                    client_settings[client_name]["secret"])
3334
 
            except PGPError:
3335
 
                # If decryption fails, we use secret from new settings
3336
 
                logger.debug("Failed to decrypt {} old secret".format(
3337
 
                    client_name))
3338
 
                client["secret"] = (client_settings[client_name]
3339
 
                                    ["secret"])
3340
 
 
3341
 
    # Add/remove clients based on new changes made to config
3342
 
    for client_name in (set(old_client_settings)
3343
 
                        - set(client_settings)):
3344
 
        del clients_data[client_name]
3345
 
    for client_name in (set(client_settings)
3346
 
                        - set(old_client_settings)):
3347
 
        clients_data[client_name] = client_settings[client_name]
3348
 
 
3349
 
    # Create all client objects
3350
 
    for client_name, client in clients_data.items():
3351
 
        tcp_server.clients[client_name] = client_class(
3352
 
            name=client_name,
3353
 
            settings=client,
3354
 
            server_settings=server_settings)
3355
 
 
 
1923
                yield (name, special_settings[name]())
 
1924
            except KeyError:
 
1925
                yield (name, value)
 
1926
    
 
1927
    tcp_server.clients.update(set(
 
1928
            client_class(name = section,
 
1929
                         config= dict(client_config_items(
 
1930
                        client_config, section)))
 
1931
            for section in client_config.sections()))
3356
1932
    if not tcp_server.clients:
3357
1933
        logger.warning("No clients defined")
3358
 
 
3359
 
    if not foreground:
3360
 
        if pidfile is not None:
3361
 
            pid = os.getpid()
3362
 
            try:
3363
 
                with pidfile:
3364
 
                    print(pid, file=pidfile)
3365
 
            except IOError:
3366
 
                logger.error("Could not write to file %r with PID %d",
3367
 
                             pidfilename, pid)
3368
 
        del pidfile
 
1934
        
 
1935
    if not debug:
 
1936
        try:
 
1937
            with pidfile:
 
1938
                pid = os.getpid()
 
1939
                pidfile.write(str(pid) + "\n".encode("utf-8"))
 
1940
            del pidfile
 
1941
        except IOError:
 
1942
            logger.error("Could not write to file %r with PID %d",
 
1943
                         pidfilename, pid)
 
1944
        except NameError:
 
1945
            # "pidfile" was never created
 
1946
            pass
3369
1947
        del pidfilename
3370
 
 
3371
 
    for termsig in (signal.SIGHUP, signal.SIGTERM):
3372
 
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3373
 
                             lambda: main_loop.quit() and False)
3374
 
 
 
1948
        
 
1949
        signal.signal(signal.SIGINT, signal.SIG_IGN)
 
1950
 
 
1951
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
1952
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
 
1953
    
3375
1954
    if use_dbus:
3376
 
 
3377
 
        @alternate_dbus_interfaces(
3378
 
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3379
 
        class MandosDBusService(DBusObjectWithObjectManager):
 
1955
        class MandosDBusService(dbus.service.Object):
3380
1956
            """A D-Bus proxy object"""
3381
 
 
3382
1957
            def __init__(self):
3383
1958
                dbus.service.Object.__init__(self, bus, "/")
3384
 
 
3385
 
            _interface = "se.recompile.Mandos"
3386
 
 
 
1959
            _interface = "se.bsnet.fukt.Mandos"
 
1960
            
3387
1961
            @dbus.service.signal(_interface, signature="o")
3388
1962
            def ClientAdded(self, objpath):
3389
1963
                "D-Bus signal"
3390
1964
                pass
3391
 
 
 
1965
            
3392
1966
            @dbus.service.signal(_interface, signature="ss")
3393
 
            def ClientNotFound(self, key_id, address):
 
1967
            def ClientNotFound(self, fingerprint, address):
3394
1968
                "D-Bus signal"
3395
1969
                pass
3396
 
 
3397
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3398
 
                               "true"})
 
1970
            
3399
1971
            @dbus.service.signal(_interface, signature="os")
3400
1972
            def ClientRemoved(self, objpath, name):
3401
1973
                "D-Bus signal"
3402
1974
                pass
3403
 
 
3404
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
 
                               "true"})
 
1975
            
3406
1976
            @dbus.service.method(_interface, out_signature="ao")
3407
1977
            def GetAllClients(self):
3408
1978
                "D-Bus method"
3409
 
                return dbus.Array(c.dbus_object_path for c in
3410
 
                                  tcp_server.clients.values())
3411
 
 
3412
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
 
                               "true"})
 
1979
                return dbus.Array(c.dbus_object_path
 
1980
                                  for c in tcp_server.clients)
 
1981
            
3414
1982
            @dbus.service.method(_interface,
3415
1983
                                 out_signature="a{oa{sv}}")
3416
1984
            def GetAllClientsWithProperties(self):
3417
1985
                "D-Bus method"
3418
1986
                return dbus.Dictionary(
3419
 
                    {c.dbus_object_path: c.GetAll(
3420
 
                        "se.recompile.Mandos.Client")
3421
 
                     for c in tcp_server.clients.values()},
 
1987
                    ((c.dbus_object_path, c.GetAll(""))
 
1988
                     for c in tcp_server.clients),
3422
1989
                    signature="oa{sv}")
3423
 
 
 
1990
            
3424
1991
            @dbus.service.method(_interface, in_signature="o")
3425
1992
            def RemoveClient(self, object_path):
3426
1993
                "D-Bus method"
3427
 
                for c in tcp_server.clients.values():
 
1994
                for c in tcp_server.clients:
3428
1995
                    if c.dbus_object_path == object_path:
3429
 
                        del tcp_server.clients[c.name]
 
1996
                        tcp_server.clients.remove(c)
3430
1997
                        c.remove_from_connection()
3431
 
                        # Don't signal the disabling
 
1998
                        # Don't signal anything except ClientRemoved
3432
1999
                        c.disable(quiet=True)
3433
 
                        # Emit D-Bus signal for removal
3434
 
                        self.client_removed_signal(c)
 
2000
                        # Emit D-Bus signal
 
2001
                        self.ClientRemoved(object_path, c.name)
3435
2002
                        return
3436
2003
                raise KeyError(object_path)
3437
 
 
 
2004
            
3438
2005
            del _interface
3439
 
 
3440
 
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3441
 
                                 out_signature="a{oa{sa{sv}}}")
3442
 
            def GetManagedObjects(self):
3443
 
                """D-Bus method"""
3444
 
                return dbus.Dictionary(
3445
 
                    {client.dbus_object_path:
3446
 
                     dbus.Dictionary(
3447
 
                         {interface: client.GetAll(interface)
3448
 
                          for interface in
3449
 
                          client._get_all_interface_names()})
3450
 
                     for client in tcp_server.clients.values()})
3451
 
 
3452
 
            def client_added_signal(self, client):
3453
 
                """Send the new standard signal and the old signal"""
3454
 
                if use_dbus:
3455
 
                    # New standard signal
3456
 
                    self.InterfacesAdded(
3457
 
                        client.dbus_object_path,
3458
 
                        dbus.Dictionary(
3459
 
                            {interface: client.GetAll(interface)
3460
 
                             for interface in
3461
 
                             client._get_all_interface_names()}))
3462
 
                    # Old signal
3463
 
                    self.ClientAdded(client.dbus_object_path)
3464
 
 
3465
 
            def client_removed_signal(self, client):
3466
 
                """Send the new standard signal and the old signal"""
3467
 
                if use_dbus:
3468
 
                    # New standard signal
3469
 
                    self.InterfacesRemoved(
3470
 
                        client.dbus_object_path,
3471
 
                        client._get_all_interface_names())
3472
 
                    # Old signal
3473
 
                    self.ClientRemoved(client.dbus_object_path,
3474
 
                                       client.name)
3475
 
 
 
2006
        
3476
2007
        mandos_dbus_service = MandosDBusService()
3477
 
 
3478
 
    # Save modules to variables to exempt the modules from being
3479
 
    # unloaded before the function registered with atexit() is run.
3480
 
    mp = multiprocessing
3481
 
    wn = wnull
3482
 
 
 
2008
    
3483
2009
    def cleanup():
3484
2010
        "Cleanup function; run on exit"
3485
 
        if zeroconf:
3486
 
            service.cleanup()
3487
 
 
3488
 
        mp.active_children()
3489
 
        wn.close()
3490
 
        if not (tcp_server.clients or client_settings):
3491
 
            return
3492
 
 
3493
 
        # Store client before exiting. Secrets are encrypted with key
3494
 
        # based on what config file has. If config file is
3495
 
        # removed/edited, old secret will thus be unrecovable.
3496
 
        clients = {}
3497
 
        with PGPEngine() as pgp:
3498
 
            for client in tcp_server.clients.values():
3499
 
                key = client_settings[client.name]["secret"]
3500
 
                client.encrypted_secret = pgp.encrypt(client.secret,
3501
 
                                                      key)
3502
 
                client_dict = {}
3503
 
 
3504
 
                # A list of attributes that can not be pickled
3505
 
                # + secret.
3506
 
                exclude = {"bus", "changedstate", "secret",
3507
 
                           "checker", "server_settings"}
3508
 
                for name, typ in inspect.getmembers(dbus.service
3509
 
                                                    .Object):
3510
 
                    exclude.add(name)
3511
 
 
3512
 
                client_dict["encrypted_secret"] = (client
3513
 
                                                   .encrypted_secret)
3514
 
                for attr in client.client_structure:
3515
 
                    if attr not in exclude:
3516
 
                        client_dict[attr] = getattr(client, attr)
3517
 
 
3518
 
                clients[client.name] = client_dict
3519
 
                del client_settings[client.name]["secret"]
3520
 
 
3521
 
        try:
3522
 
            with tempfile.NamedTemporaryFile(
3523
 
                    mode='wb',
3524
 
                    suffix=".pickle",
3525
 
                    prefix='clients-',
3526
 
                    dir=os.path.dirname(stored_state_path),
3527
 
                    delete=False) as stored_state:
3528
 
                pickle.dump((clients, client_settings), stored_state,
3529
 
                            protocol=2)
3530
 
                tempname = stored_state.name
3531
 
            os.rename(tempname, stored_state_path)
3532
 
        except (IOError, OSError) as e:
3533
 
            if not debug:
3534
 
                try:
3535
 
                    os.remove(tempname)
3536
 
                except NameError:
3537
 
                    pass
3538
 
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3539
 
                logger.warning("Could not save persistent state: {}"
3540
 
                               .format(os.strerror(e.errno)))
3541
 
            else:
3542
 
                logger.warning("Could not save persistent state:",
3543
 
                               exc_info=e)
3544
 
                raise
3545
 
 
3546
 
        # Delete all clients, and settings from config
 
2011
        service.cleanup()
 
2012
        
3547
2013
        while tcp_server.clients:
3548
 
            name, client = tcp_server.clients.popitem()
 
2014
            client = tcp_server.clients.pop()
3549
2015
            if use_dbus:
3550
2016
                client.remove_from_connection()
3551
 
            # Don't signal the disabling
 
2017
            client.disable_hook = None
 
2018
            # Don't signal anything except ClientRemoved
3552
2019
            client.disable(quiet=True)
3553
 
            # Emit D-Bus signal for removal
3554
2020
            if use_dbus:
3555
 
                mandos_dbus_service.client_removed_signal(client)
3556
 
        client_settings.clear()
3557
 
 
 
2021
                # Emit D-Bus signal
 
2022
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
 
2023
                                                  client.name)
 
2024
    
3558
2025
    atexit.register(cleanup)
3559
 
 
3560
 
    for client in tcp_server.clients.values():
 
2026
    
 
2027
    for client in tcp_server.clients:
3561
2028
        if use_dbus:
3562
 
            # Emit D-Bus signal for adding
3563
 
            mandos_dbus_service.client_added_signal(client)
3564
 
        # Need to initiate checking of clients
3565
 
        if client.enabled:
3566
 
            client.init_checker()
3567
 
 
 
2029
            # Emit D-Bus signal
 
2030
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
 
2031
        client.enable()
 
2032
    
3568
2033
    tcp_server.enable()
3569
2034
    tcp_server.server_activate()
3570
 
 
 
2035
    
3571
2036
    # Find out what port we got
3572
 
    if zeroconf:
3573
 
        service.port = tcp_server.socket.getsockname()[1]
 
2037
    service.port = tcp_server.socket.getsockname()[1]
3574
2038
    if use_ipv6:
3575
2039
        logger.info("Now listening on address %r, port %d,"
3576
 
                    " flowinfo %d, scope_id %d",
3577
 
                    *tcp_server.socket.getsockname())
 
2040
                    " flowinfo %d, scope_id %d"
 
2041
                    % tcp_server.socket.getsockname())
3578
2042
    else:                       # IPv4
3579
 
        logger.info("Now listening on address %r, port %d",
3580
 
                    *tcp_server.socket.getsockname())
3581
 
 
3582
 
    # service.interface = tcp_server.socket.getsockname()[3]
3583
 
 
 
2043
        logger.info("Now listening on address %r, port %d"
 
2044
                    % tcp_server.socket.getsockname())
 
2045
    
 
2046
    #service.interface = tcp_server.socket.getsockname()[3]
 
2047
    
3584
2048
    try:
3585
 
        if zeroconf:
3586
 
            # From the Avahi example code
3587
 
            try:
3588
 
                service.activate()
3589
 
            except dbus.exceptions.DBusException as error:
3590
 
                logger.critical("D-Bus Exception", exc_info=error)
3591
 
                cleanup()
3592
 
                sys.exit(1)
3593
 
            # End of Avahi example code
3594
 
 
3595
 
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3596
 
                          lambda *args, **kwargs:
3597
 
                          (tcp_server.handle_request
3598
 
                           (*args[2:], **kwargs) or True))
3599
 
 
 
2049
        # From the Avahi example code
 
2050
        try:
 
2051
            service.activate()
 
2052
        except dbus.exceptions.DBusException as error:
 
2053
            logger.critical("DBusException: %s", error)
 
2054
            cleanup()
 
2055
            sys.exit(1)
 
2056
        # End of Avahi example code
 
2057
        
 
2058
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
2059
                             lambda *args, **kwargs:
 
2060
                             (tcp_server.handle_request
 
2061
                              (*args[2:], **kwargs) or True))
 
2062
        
3600
2063
        logger.debug("Starting main loop")
3601
2064
        main_loop.run()
3602
2065
    except AvahiError as error:
3603
 
        logger.critical("Avahi Error", exc_info=error)
 
2066
        logger.critical("AvahiError: %s", error)
3604
2067
        cleanup()
3605
2068
        sys.exit(1)
3606
2069
    except KeyboardInterrupt:
3611
2074
    # Must run before the D-Bus bus name gets deregistered
3612
2075
    cleanup()
3613
2076
 
3614
 
 
3615
2077
if __name__ == '__main__':
3616
2078
    main()