/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2011-02-27 17:26:35 UTC
  • Revision ID: teddy@fukt.bsnet.se-20110227172635-hw1sire7k3vuo1co
Update copyright year to "2011" wherever appropriate.

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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
 
import argparse
 
39
import optparse
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 = "1.8.3"
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 = "1.2.3"
 
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
360
151
        self.group = None       # our entry group
361
152
        self.server = None
362
153
        self.bus = bus
363
 
        self.entry_group_state_changed_match = None
364
 
 
365
 
    def rename(self, remove=True):
 
154
    def rename(self):
366
155
        """Derived from the Avahi example code"""
367
156
        if self.rename_count >= self.max_renames:
368
157
            logger.critical("No suitable Zeroconf service name found"
369
158
                            " after %i retries, exiting.",
370
159
                            self.rename_count)
371
160
            raise AvahiServiceError("Too many renames")
372
 
        self.name = str(
373
 
            self.server.GetAlternativeServiceName(self.name))
374
 
        self.rename_count += 1
 
161
        self.name = unicode(self.server.GetAlternativeServiceName(self.name))
375
162
        logger.info("Changing Zeroconf service name to %r ...",
376
163
                    self.name)
377
 
        if remove:
378
 
            self.remove()
 
164
        syslogger.setFormatter(logging.Formatter
 
165
                               ('Mandos (%s) [%%(process)d]:'
 
166
                                ' %%(levelname)s: %%(message)s'
 
167
                                % self.name))
 
168
        self.remove()
379
169
        try:
380
170
            self.add()
381
 
        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
 
 
 
171
        except dbus.exceptions.DBusException, error:
 
172
            logger.critical("DBusException: %s", error)
 
173
            self.cleanup()
 
174
            os._exit(1)
 
175
        self.rename_count += 1
391
176
    def remove(self):
392
177
        """Derived from the Avahi example code"""
393
 
        if self.entry_group_state_changed_match is not None:
394
 
            self.entry_group_state_changed_match.remove()
395
 
            self.entry_group_state_changed_match = None
396
178
        if self.group is not None:
397
179
            self.group.Reset()
398
 
 
399
180
    def add(self):
400
181
        """Derived from the Avahi example code"""
401
 
        self.remove()
402
182
        if self.group is None:
403
183
            self.group = dbus.Interface(
404
184
                self.bus.get_object(avahi.DBUS_NAME,
405
185
                                    self.server.EntryGroupNew()),
406
186
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
407
 
        self.entry_group_state_changed_match = (
408
 
            self.group.connect_to_signal(
409
 
                'StateChanged', self.entry_group_state_changed))
 
187
            self.group.connect_to_signal('StateChanged',
 
188
                                         self
 
189
                                         .entry_group_state_changed)
410
190
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
411
191
                     self.name, self.type)
412
192
        self.group.AddService(
418
198
            dbus.UInt16(self.port),
419
199
            avahi.string_array_to_txt_array(self.TXT))
420
200
        self.group.Commit()
421
 
 
422
201
    def entry_group_state_changed(self, state, error):
423
202
        """Derived from the Avahi example code"""
424
203
        logger.debug("Avahi entry group state change: %i", state)
425
 
 
 
204
        
426
205
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
206
            logger.debug("Zeroconf service established.")
428
207
        elif state == avahi.ENTRY_GROUP_COLLISION:
430
209
            self.rename()
431
210
        elif state == avahi.ENTRY_GROUP_FAILURE:
432
211
            logger.critical("Avahi: Error in group state changed %s",
433
 
                            str(error))
434
 
            raise AvahiGroupError("State changed: {!s}".format(error))
435
 
 
 
212
                            unicode(error))
 
213
            raise AvahiGroupError("State changed: %s"
 
214
                                  % unicode(error))
436
215
    def cleanup(self):
437
216
        """Derived from the Avahi example code"""
438
217
        if self.group is not None:
439
 
            try:
440
 
                self.group.Free()
441
 
            except (dbus.exceptions.UnknownMethodException,
442
 
                    dbus.exceptions.DBusException):
443
 
                pass
 
218
            self.group.Free()
444
219
            self.group = None
445
 
        self.remove()
446
 
 
447
 
    def server_state_changed(self, state, error=None):
 
220
    def server_state_changed(self, state):
448
221
        """Derived from the Avahi example code"""
449
222
        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
 
        }
456
 
        if state in bad_states:
457
 
            if bad_states[state] is not None:
458
 
                if error is None:
459
 
                    logger.error(bad_states[state])
460
 
                else:
461
 
                    logger.error(bad_states[state] + ": %r", error)
462
 
            self.cleanup()
 
223
        if state == avahi.SERVER_COLLISION:
 
224
            logger.error("Zeroconf server name collision")
 
225
            self.remove()
463
226
        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)
476
 
        else:
477
 
            if error is None:
478
 
                logger.debug("Unknown state: %r", state)
479
 
            else:
480
 
                logger.debug("Unknown state: %r: %r", state, error)
481
 
 
 
227
            self.add()
482
228
    def activate(self):
483
229
        """Derived from the Avahi example code"""
484
230
        if self.server is None:
485
231
            self.server = dbus.Interface(
486
232
                self.bus.get_object(avahi.DBUS_NAME,
487
 
                                    avahi.DBUS_PATH_SERVER,
488
 
                                    follow_name_owner_changes=True),
 
233
                                    avahi.DBUS_PATH_SERVER),
489
234
                avahi.DBUS_INTERFACE_SERVER)
490
235
        self.server.connect_to_signal("StateChanged",
491
 
                                      self.server_state_changed)
 
236
                                 self.server_state_changed)
492
237
        self.server_state_changed(self.server.GetState())
493
238
 
494
239
 
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
240
class Client(object):
818
241
    """A representation of a client host served by this server.
819
 
 
 
242
    
820
243
    Attributes:
821
 
    approved:   bool(); 'None' if not yet approved/disapproved
 
244
    _approved:   bool(); 'None' if not yet approved/disapproved
822
245
    approval_delay: datetime.timedelta(); Time to wait for approval
823
246
    approval_duration: datetime.timedelta(); Duration of one approval
824
247
    checker:    subprocess.Popen(); a running checker process used
825
248
                                    to see if the client lives.
826
249
                                    'None' if no process is running.
827
 
    checker_callback_tag: a GLib event source tag, or None
 
250
    checker_callback_tag: a gobject event source tag, or None
828
251
    checker_command: string; External command which is run to check
829
252
                     if client lives.  %() expansions are done at
830
253
                     runtime with vars(self) as dict, so that for
831
254
                     instance %(name)s can be used in the command.
832
 
    checker_initiator_tag: a GLib event source tag, or None
 
255
    checker_initiator_tag: a gobject event source tag, or None
833
256
    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
257
    current_checker_command: string; current running checker_command
837
 
    disable_initiator_tag: a GLib event source tag, or None
 
258
    disable_hook:  If set, called by disable() as disable_hook(self)
 
259
    disable_initiator_tag: a gobject event source tag, or None
838
260
    enabled:    bool()
839
261
    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
 
262
                 uniquely identify the client
843
263
    host:       string; available for use by the checker command
844
264
    interval:   datetime.timedelta(); How often to start a new checker
845
265
    last_approval_request: datetime.datetime(); (UTC) or None
846
266
    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
 
267
    last_enabled: datetime.datetime(); (UTC)
853
268
    name:       string; from the config file, used in log messages and
854
269
                        D-Bus identifiers
855
270
    secret:     bytestring; sent verbatim (over TLS) to client
856
271
    timeout:    datetime.timedelta(); How long from last_checked_ok
857
272
                                      until this client is disabled
858
 
    extended_timeout:   extra long timeout when secret has been sent
859
273
    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
274
    """
864
 
 
 
275
    
865
276
    runtime_expansions = ("approval_delay", "approval_duration",
866
 
                          "created", "enabled", "expires", "key_id",
867
 
                          "fingerprint", "host", "interval",
868
 
                          "last_approval_request", "last_checked_ok",
 
277
                          "created", "enabled", "fingerprint",
 
278
                          "host", "interval", "last_checked_ok",
869
279
                          "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
 
 
 
280
    
882
281
    @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):
 
282
    def _timedelta_to_milliseconds(td):
 
283
        "Convert a datetime.timedelta() to milliseconds"
 
284
        return ((td.days * 24 * 60 * 60 * 1000)
 
285
                + (td.seconds * 1000)
 
286
                + (td.microseconds // 1000))
 
287
    
 
288
    def timeout_milliseconds(self):
 
289
        "Return the 'timeout' attribute in milliseconds"
 
290
        return self._timedelta_to_milliseconds(self.timeout)
 
291
    
 
292
    def interval_milliseconds(self):
 
293
        "Return the 'interval' attribute in milliseconds"
 
294
        return self._timedelta_to_milliseconds(self.interval)
 
295
 
 
296
    def approval_delay_milliseconds(self):
 
297
        return self._timedelta_to_milliseconds(self.approval_delay)
 
298
    
 
299
    def __init__(self, name = None, disable_hook=None, config=None):
 
300
        """Note: the 'checker' key in 'config' sets the
 
301
        'checker_command' attribute and *not* the 'checker'
 
302
        attribute."""
937
303
        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
 
 
 
304
        if config is None:
 
305
            config = {}
955
306
        logger.debug("Creating client %r", self.name)
956
 
        logger.debug("  Key ID: %s", self.key_id)
 
307
        # Uppercase and remove spaces from fingerprint for later
 
308
        # comparison purposes with return value from the fingerprint()
 
309
        # function
 
310
        self.fingerprint = (config["fingerprint"].upper()
 
311
                            .replace(" ", ""))
957
312
        logger.debug("  Fingerprint: %s", self.fingerprint)
958
 
        self.created = settings.get("created",
959
 
                                    datetime.datetime.utcnow())
960
 
 
961
 
        # attributes specific for this server instance
 
313
        if "secret" in config:
 
314
            self.secret = config["secret"].decode("base64")
 
315
        elif "secfile" in config:
 
316
            with open(os.path.expanduser(os.path.expandvars
 
317
                                         (config["secfile"])),
 
318
                      "rb") as secfile:
 
319
                self.secret = secfile.read()
 
320
        else:
 
321
            raise TypeError("No secret or secfile for client %s"
 
322
                            % self.name)
 
323
        self.host = config.get("host", "")
 
324
        self.created = datetime.datetime.utcnow()
 
325
        self.enabled = False
 
326
        self.last_approval_request = None
 
327
        self.last_enabled = None
 
328
        self.last_checked_ok = None
 
329
        self.timeout = string_to_delta(config["timeout"])
 
330
        self.interval = string_to_delta(config["interval"])
 
331
        self.disable_hook = disable_hook
962
332
        self.checker = None
963
333
        self.checker_initiator_tag = None
964
334
        self.disable_initiator_tag = None
965
335
        self.checker_callback_tag = None
 
336
        self.checker_command = config["checker"]
966
337
        self.current_checker_command = None
967
 
        self.approved = None
 
338
        self.last_connect = None
 
339
        self._approved = None
 
340
        self.approved_by_default = config.get("approved_by_default",
 
341
                                              True)
968
342
        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
 
343
        self.approval_delay = string_to_delta(
 
344
            config["approval_delay"])
 
345
        self.approval_duration = string_to_delta(
 
346
            config["approval_duration"])
 
347
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
 
348
    
982
349
    def send_changedstate(self):
983
 
        with self.changedstate:
984
 
            self.changedstate.notify_all()
985
 
 
 
350
        self.changedstate.acquire()
 
351
        self.changedstate.notify_all()
 
352
        self.changedstate.release()
 
353
        
986
354
    def enable(self):
987
355
        """Start this client's checker and timeout hooks"""
988
356
        if getattr(self, "enabled", False):
989
357
            # Already enabled
990
358
            return
991
 
        self.expires = datetime.datetime.utcnow() + self.timeout
992
 
        self.enabled = True
 
359
        self.send_changedstate()
993
360
        self.last_enabled = datetime.datetime.utcnow()
994
 
        self.init_checker()
995
 
        self.send_changedstate()
996
 
 
 
361
        # Schedule a new checker to be started an 'interval' from now,
 
362
        # and every interval from then on.
 
363
        self.checker_initiator_tag = (gobject.timeout_add
 
364
                                      (self.interval_milliseconds(),
 
365
                                       self.start_checker))
 
366
        # Schedule a disable() when 'timeout' has passed
 
367
        self.disable_initiator_tag = (gobject.timeout_add
 
368
                                   (self.timeout_milliseconds(),
 
369
                                    self.disable))
 
370
        self.enabled = True
 
371
        # Also start a new checker *right now*.
 
372
        self.start_checker()
 
373
    
997
374
    def disable(self, quiet=True):
998
375
        """Disable this client."""
999
376
        if not getattr(self, "enabled", False):
1000
377
            return False
1001
378
        if not quiet:
 
379
            self.send_changedstate()
 
380
        if not quiet:
1002
381
            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)
 
382
        if getattr(self, "disable_initiator_tag", False):
 
383
            gobject.source_remove(self.disable_initiator_tag)
1005
384
            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)
 
385
        if getattr(self, "checker_initiator_tag", False):
 
386
            gobject.source_remove(self.checker_initiator_tag)
1009
387
            self.checker_initiator_tag = None
1010
388
        self.stop_checker()
 
389
        if self.disable_hook:
 
390
            self.disable_hook(self)
1011
391
        self.enabled = False
1012
 
        if not quiet:
1013
 
            self.send_changedstate()
1014
 
        # Do not run this again if called by a GLib.timeout_add
 
392
        # Do not run this again if called by a gobject.timeout_add
1015
393
        return False
1016
 
 
 
394
    
1017
395
    def __del__(self):
 
396
        self.disable_hook = None
1018
397
        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):
 
398
    
 
399
    def checker_callback(self, pid, condition, command):
1038
400
        """The checker has completed, so take appropriate actions."""
1039
401
        self.checker_callback_tag = None
1040
402
        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:
 
403
        if os.WIFEXITED(condition):
 
404
            exitstatus = os.WEXITSTATUS(condition)
 
405
            if exitstatus == 0:
1049
406
                logger.info("Checker for %(name)s succeeded",
1050
407
                            vars(self))
1051
408
                self.checked_ok()
1052
409
            else:
1053
 
                logger.info("Checker for %(name)s failed", vars(self))
 
410
                logger.info("Checker for %(name)s failed",
 
411
                            vars(self))
1054
412
        else:
1055
 
            self.last_checker_status = -1
1056
 
            self.last_checker_signal = -returncode
1057
413
            logger.warning("Checker for %(name)s crashed?",
1058
414
                           vars(self))
1059
 
        return False
1060
 
 
 
415
    
1061
416
    def checked_ok(self):
1062
 
        """Assert that the client has been seen, alive and well."""
 
417
        """Bump up the timeout for this client.
 
418
        
 
419
        This should only be called when the client has been seen,
 
420
        alive and well.
 
421
        """
1063
422
        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
 
 
 
423
        gobject.source_remove(self.disable_initiator_tag)
 
424
        self.disable_initiator_tag = (gobject.timeout_add
 
425
                                      (self.timeout_milliseconds(),
 
426
                                       self.disable))
 
427
    
1080
428
    def need_approval(self):
1081
429
        self.last_approval_request = datetime.datetime.utcnow()
1082
 
 
 
430
    
1083
431
    def start_checker(self):
1084
432
        """Start a new checker subprocess if one is not running.
1085
 
 
 
433
        
1086
434
        If a checker already exists, leave it running and do
1087
435
        nothing."""
1088
436
        # 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
 
437
        # did that, then if a checker (for some reason) started
 
438
        # running slowly and taking more than 'interval' time, the
 
439
        # client would inevitably timeout, since no checker would get
 
440
        # a chance to run to completion.  If we instead leave running
1093
441
        # checkers alone, the checker would have to take more time
1094
442
        # than 'timeout' for the client to be disabled, which is as it
1095
443
        # 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
 
444
        
 
445
        # If a checker exists, make sure it is not a zombie
 
446
        try:
 
447
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
448
        except (AttributeError, OSError), error:
 
449
            if (isinstance(error, OSError)
 
450
                and error.errno != errno.ECHILD):
 
451
                raise error
 
452
        else:
 
453
            if pid:
 
454
                logger.warning("Checker was a zombie")
 
455
                gobject.source_remove(self.checker_callback_tag)
 
456
                self.checker_callback(pid, status,
 
457
                                      self.current_checker_command)
1101
458
        # Start a new checker if needed
1102
459
        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
460
            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
 
461
                # In case checker_command has exactly one % operator
 
462
                command = self.checker_command % self.host
 
463
            except TypeError:
 
464
                # Escape attributes for the shell
 
465
                escaped_attrs = dict(
 
466
                    (attr,
 
467
                     re.escape(unicode(str(getattr(self, attr, "")),
 
468
                                       errors=
 
469
                                       'replace')))
 
470
                    for attr in
 
471
                    self.runtime_expansions)
 
472
 
 
473
                try:
 
474
                    command = self.checker_command % escaped_attrs
 
475
                except TypeError, error:
 
476
                    logger.error('Could not format string "%s":'
 
477
                                 ' %s', self.checker_command, error)
 
478
                    return True # Try again later
1114
479
            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
 
480
            try:
 
481
                logger.info("Starting checker %r for %s",
 
482
                            command, self.name)
 
483
                # We don't need to redirect stdout and stderr, since
 
484
                # in normal mode, that is already done by daemon(),
 
485
                # and in debug mode we don't want to.  (Stdin is
 
486
                # always replaced by /dev/null.)
 
487
                self.checker = subprocess.Popen(command,
 
488
                                                close_fds=True,
 
489
                                                shell=True, cwd="/")
 
490
                self.checker_callback_tag = (gobject.child_watch_add
 
491
                                             (self.checker.pid,
 
492
                                              self.checker_callback,
 
493
                                              data=command))
 
494
                # The checker may have completed before the gobject
 
495
                # watch was added.  Check for this.
 
496
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
497
                if pid:
 
498
                    gobject.source_remove(self.checker_callback_tag)
 
499
                    self.checker_callback(pid, status, command)
 
500
            except OSError, error:
 
501
                logger.error("Failed to start subprocess: %s",
 
502
                             error)
 
503
        # Re-run this periodically if run by gobject.timeout_add
1141
504
        return True
1142
 
 
 
505
    
1143
506
    def stop_checker(self):
1144
507
        """Force the checker process, if any, to stop."""
1145
508
        if self.checker_callback_tag:
1146
 
            GLib.source_remove(self.checker_callback_tag)
 
509
            gobject.source_remove(self.checker_callback_tag)
1147
510
            self.checker_callback_tag = None
1148
511
        if getattr(self, "checker", None) is None:
1149
512
            return
1150
513
        logger.debug("Stopping checker for %(name)s", vars(self))
1151
 
        self.checker.terminate()
 
514
        try:
 
515
            os.kill(self.checker.pid, signal.SIGTERM)
 
516
            #time.sleep(0.5)
 
517
            #if self.checker.poll() is None:
 
518
            #    os.kill(self.checker.pid, signal.SIGKILL)
 
519
        except OSError, error:
 
520
            if error.errno != errno.ESRCH: # No such process
 
521
                raise
1152
522
        self.checker = None
1153
523
 
1154
 
 
1155
 
def dbus_service_property(dbus_interface,
1156
 
                          signature="v",
1157
 
                          access="readwrite",
1158
 
                          byte_arrays=False):
 
524
def dbus_service_property(dbus_interface, signature="v",
 
525
                          access="readwrite", byte_arrays=False):
1159
526
    """Decorators for marking methods of a DBusObjectWithProperties to
1160
527
    become properties on the D-Bus.
1161
 
 
 
528
    
1162
529
    The decorated method will be called with no arguments by "Get"
1163
530
    and with one argument by "Set".
1164
 
 
 
531
    
1165
532
    The parameters, where they are supported, are the same as
1166
533
    dbus.service.method, except there is only "signature", since the
1167
534
    type from Get() and the type sent to Set() is the same.
1170
537
    # "Set" method, so we fail early here:
1171
538
    if byte_arrays and signature != "ay":
1172
539
        raise ValueError("Byte arrays not supported for non-'ay'"
1173
 
                         " signature {!r}".format(signature))
1174
 
 
 
540
                         " signature %r" % signature)
1175
541
    def decorator(func):
1176
542
        func._dbus_is_property = True
1177
543
        func._dbus_interface = dbus_interface
1180
546
        func._dbus_name = func.__name__
1181
547
        if func._dbus_name.endswith("_dbus_property"):
1182
548
            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
 
 
 
549
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
550
        return func
1229
551
    return decorator
1230
552
 
1231
553
 
1232
554
class DBusPropertyException(dbus.exceptions.DBusException):
1233
555
    """A base class for D-Bus property-related exceptions
1234
556
    """
1235
 
    pass
 
557
    def __unicode__(self):
 
558
        return unicode(str(self))
1236
559
 
1237
560
 
1238
561
class DBusPropertyAccessException(DBusPropertyException):
1247
570
    pass
1248
571
 
1249
572
 
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):
 
573
class DBusObjectWithProperties(dbus.service.Object):
1340
574
    """A D-Bus object with properties.
1341
575
 
1342
576
    Classes inheriting from this can use the dbus_service_property
1343
577
    decorator to expose methods as D-Bus properties.  It exposes the
1344
578
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
579
    """
1346
 
 
 
580
    
 
581
    @staticmethod
 
582
    def _is_dbus_property(obj):
 
583
        return getattr(obj, "_dbus_is_property", False)
 
584
    
 
585
    def _get_all_dbus_properties(self):
 
586
        """Returns a generator of (name, attribute) pairs
 
587
        """
 
588
        return ((prop._dbus_name, prop)
 
589
                for name, prop in
 
590
                inspect.getmembers(self, self._is_dbus_property))
 
591
    
1347
592
    def _get_dbus_property(self, interface_name, property_name):
1348
593
        """Returns a bound method if one exists which is a D-Bus
1349
594
        property with the specified name and interface.
1350
595
        """
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
 
 
 
596
        for name in (property_name,
 
597
                     property_name + "_dbus_property"):
 
598
            prop = getattr(self, name, None)
 
599
            if (prop is None
 
600
                or not self._is_dbus_property(prop)
 
601
                or prop._dbus_name != property_name
 
602
                or (interface_name and prop._dbus_interface
 
603
                    and interface_name != prop._dbus_interface)):
 
604
                continue
 
605
            return prop
1358
606
        # 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",
 
607
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
 
608
                                   + interface_name + "."
 
609
                                   + property_name)
 
610
    
 
611
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
612
                         out_signature="v")
1374
613
    def Get(self, interface_name, property_name):
1375
614
        """Standard D-Bus property Get() method, see D-Bus standard.
1381
620
        if not hasattr(value, "variant_level"):
1382
621
            return value
1383
622
        return type(value)(value, variant_level=value.variant_level+1)
1384
 
 
 
623
    
1385
624
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
625
    def Set(self, interface_name, property_name, value):
1387
626
        """Standard D-Bus property Set() method, see D-Bus standard.
1393
632
            # The byte_arrays option is not supported yet on
1394
633
            # signatures other than "ay".
1395
634
            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))
 
635
                raise ValueError
 
636
            value = dbus.ByteArray(''.join(unichr(byte)
 
637
                                           for byte in value))
1401
638
        prop(value)
1402
 
 
1403
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1404
 
                         in_signature="s",
 
639
    
 
640
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
641
                         out_signature="a{sv}")
1406
642
    def GetAll(self, interface_name):
1407
643
        """Standard D-Bus property GetAll() method, see D-Bus
1409
645
 
1410
646
        Note: Will not include properties with access="write".
1411
647
        """
1412
 
        properties = {}
1413
 
        for name, prop in self._get_all_dbus_things("property"):
 
648
        all = {}
 
649
        for name, prop in self._get_all_dbus_properties():
1414
650
            if (interface_name
1415
651
                and interface_name != prop._dbus_interface):
1416
652
                # Interface non-empty but did not match
1420
656
                continue
1421
657
            value = prop()
1422
658
            if not hasattr(value, "variant_level"):
1423
 
                properties[name] = value
 
659
                all[name] = value
1424
660
                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
 
 
 
661
            all[name] = type(value)(value, variant_level=
 
662
                                    value.variant_level+1)
 
663
        return dbus.Dictionary(all, signature="sv")
 
664
    
1437
665
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
666
                         out_signature="s",
1439
667
                         path_keyword='object_path',
1440
668
                         connection_keyword='connection')
1441
669
    def Introspect(self, object_path, connection):
1442
 
        """Overloading of standard D-Bus method.
1443
 
 
1444
 
        Inserts property tags and interface annotation tags.
 
670
        """Standard D-Bus method, overloaded to insert property tags.
1445
671
        """
1446
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
 
                                                         object_path,
1448
 
                                                         connection)
 
672
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
673
                                                   connection)
1449
674
        try:
1450
675
            document = xml.dom.minidom.parseString(xmlstring)
1451
 
 
1452
676
            def make_tag(document, name, prop):
1453
677
                e = document.createElement("property")
1454
678
                e.setAttribute("name", name)
1455
679
                e.setAttribute("type", prop._dbus_signature)
1456
680
                e.setAttribute("access", prop._dbus_access)
1457
681
                return e
1458
 
 
1459
682
            for if_tag in document.getElementsByTagName("interface"):
1460
 
                # Add property tags
1461
683
                for tag in (make_tag(document, name, prop)
1462
684
                            for name, prop
1463
 
                            in self._get_all_dbus_things("property")
 
685
                            in self._get_all_dbus_properties()
1464
686
                            if prop._dbus_interface
1465
687
                            == if_tag.getAttribute("name")):
1466
688
                    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
689
                # Add the names to the return values for the
1484
690
                # "org.freedesktop.DBus.Properties" methods
1485
691
                if (if_tag.getAttribute("name")
1498
704
            xmlstring = document.toxml("utf-8")
1499
705
            document.unlink()
1500
706
        except (AttributeError, xml.dom.DOMException,
1501
 
                xml.parsers.expat.ExpatError) as error:
1502
 
            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"})
 
707
                xml.parsers.expat.ExpatError), error:
 
708
            logger.error("Failed to override Introspection method",
 
709
                         error)
 
710
        return xmlstring
 
711
 
 
712
 
1756
713
class ClientDBus(Client, DBusObjectWithProperties):
1757
714
    """A Client class using D-Bus
1758
 
 
 
715
    
1759
716
    Attributes:
1760
717
    dbus_object_path: dbus.ObjectPath
1761
718
    bus: dbus.SystemBus()
1762
719
    """
1763
 
 
 
720
    
1764
721
    runtime_expansions = (Client.runtime_expansions
1765
 
                          + ("dbus_object_path", ))
1766
 
 
1767
 
    _interface = "se.recompile.Mandos.Client"
1768
 
 
 
722
                          + ("dbus_object_path",))
 
723
    
1769
724
    # dbus.service.Object doesn't use super(), so we can't either.
1770
 
 
1771
 
    def __init__(self, bus=None, *args, **kwargs):
 
725
    
 
726
    def __init__(self, bus = None, *args, **kwargs):
 
727
        self._approvals_pending = 0
1772
728
        self.bus = bus
1773
729
        Client.__init__(self, *args, **kwargs)
1774
730
        # Only now, when this client is initialized, can it show up on
1775
731
        # the D-Bus
1776
 
        client_object_name = str(self.name).translate(
 
732
        client_object_name = unicode(self.name).translate(
1777
733
            {ord("."): ord("_"),
1778
734
             ord("-"): ord("_")})
1779
 
        self.dbus_object_path = dbus.ObjectPath(
1780
 
            "/clients/" + client_object_name)
 
735
        self.dbus_object_path = (dbus.ObjectPath
 
736
                                 ("/clients/" + client_object_name))
1781
737
        DBusObjectWithProperties.__init__(self, self.bus,
1782
738
                                          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
 
 
 
739
        
 
740
    def _get_approvals_pending(self):
 
741
        return self._approvals_pending
 
742
    def _set_approvals_pending(self, value):
 
743
        old_value = self._approvals_pending
 
744
        self._approvals_pending = value
 
745
        bval = bool(value)
 
746
        if (hasattr(self, "dbus_object_path")
 
747
            and bval is not bool(old_value)):
 
748
            dbus_bool = dbus.Boolean(bval, variant_level=1)
 
749
            self.PropertyChanged(dbus.String("ApprovalPending"),
 
750
                                 dbus_bool)
 
751
 
 
752
    approvals_pending = property(_get_approvals_pending,
 
753
                                 _set_approvals_pending)
 
754
    del _get_approvals_pending, _set_approvals_pending
 
755
    
 
756
    @staticmethod
 
757
    def _datetime_to_dbus(dt, variant_level=0):
 
758
        """Convert a UTC datetime.datetime() to a D-Bus type."""
 
759
        return dbus.String(dt.isoformat(),
 
760
                           variant_level=variant_level)
 
761
    
 
762
    def enable(self):
 
763
        oldstate = getattr(self, "enabled", False)
 
764
        r = Client.enable(self)
 
765
        if oldstate != self.enabled:
 
766
            # Emit D-Bus signals
 
767
            self.PropertyChanged(dbus.String("Enabled"),
 
768
                                 dbus.Boolean(True, variant_level=1))
 
769
            self.PropertyChanged(
 
770
                dbus.String("LastEnabled"),
 
771
                self._datetime_to_dbus(self.last_enabled,
 
772
                                       variant_level=1))
 
773
        return r
 
774
    
 
775
    def disable(self, quiet = False):
 
776
        oldstate = getattr(self, "enabled", False)
 
777
        r = Client.disable(self, quiet=quiet)
 
778
        if not quiet and oldstate != self.enabled:
 
779
            # Emit D-Bus signal
 
780
            self.PropertyChanged(dbus.String("Enabled"),
 
781
                                 dbus.Boolean(False, variant_level=1))
 
782
        return r
 
783
    
1865
784
    def __del__(self, *args, **kwargs):
1866
785
        try:
1867
786
            self.remove_from_connection()
1870
789
        if hasattr(DBusObjectWithProperties, "__del__"):
1871
790
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
791
        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:
 
792
    
 
793
    def checker_callback(self, pid, condition, command,
 
794
                         *args, **kwargs):
 
795
        self.checker_callback_tag = None
 
796
        self.checker = None
 
797
        # Emit D-Bus signal
 
798
        self.PropertyChanged(dbus.String("CheckerRunning"),
 
799
                             dbus.Boolean(False, variant_level=1))
 
800
        if os.WIFEXITED(condition):
 
801
            exitstatus = os.WEXITSTATUS(condition)
1881
802
            # Emit D-Bus signal
1882
803
            self.CheckerCompleted(dbus.Int16(exitstatus),
1883
 
                                  # This is specific to GNU libC
1884
 
                                  dbus.Int64(exitstatus << 8),
 
804
                                  dbus.Int64(condition),
1885
805
                                  dbus.String(command))
1886
806
        else:
1887
807
            # Emit D-Bus signal
1888
808
            self.CheckerCompleted(dbus.Int16(-1),
1889
 
                                  dbus.Int64(
1890
 
                                      # This is specific to GNU libC
1891
 
                                      (exitstatus << 8)
1892
 
                                      | self.last_checker_signal),
 
809
                                  dbus.Int64(condition),
1893
810
                                  dbus.String(command))
1894
 
        return ret
1895
 
 
 
811
        
 
812
        return Client.checker_callback(self, pid, condition, command,
 
813
                                       *args, **kwargs)
 
814
    
 
815
    def checked_ok(self, *args, **kwargs):
 
816
        r = Client.checked_ok(self, *args, **kwargs)
 
817
        # Emit D-Bus signal
 
818
        self.PropertyChanged(
 
819
            dbus.String("LastCheckedOK"),
 
820
            (self._datetime_to_dbus(self.last_checked_ok,
 
821
                                    variant_level=1)))
 
822
        return r
 
823
    
 
824
    def need_approval(self, *args, **kwargs):
 
825
        r = Client.need_approval(self, *args, **kwargs)
 
826
        # Emit D-Bus signal
 
827
        self.PropertyChanged(
 
828
            dbus.String("LastApprovalRequest"),
 
829
            (self._datetime_to_dbus(self.last_approval_request,
 
830
                                    variant_level=1)))
 
831
        return r
 
832
    
1896
833
    def start_checker(self, *args, **kwargs):
1897
 
        old_checker_pid = getattr(self.checker, "pid", None)
 
834
        old_checker = self.checker
 
835
        if self.checker is not None:
 
836
            old_checker_pid = self.checker.pid
 
837
        else:
 
838
            old_checker_pid = None
1898
839
        r = Client.start_checker(self, *args, **kwargs)
1899
840
        # Only if new checker process was started
1900
841
        if (self.checker is not None
1901
842
            and old_checker_pid != self.checker.pid):
1902
843
            # Emit D-Bus signal
1903
844
            self.CheckerStarted(self.current_checker_command)
 
845
            self.PropertyChanged(
 
846
                dbus.String("CheckerRunning"),
 
847
                dbus.Boolean(True, variant_level=1))
 
848
        return r
 
849
    
 
850
    def stop_checker(self, *args, **kwargs):
 
851
        old_checker = getattr(self, "checker", None)
 
852
        r = Client.stop_checker(self, *args, **kwargs)
 
853
        if (old_checker is not None
 
854
            and getattr(self, "checker", None) is None):
 
855
            self.PropertyChanged(dbus.String("CheckerRunning"),
 
856
                                 dbus.Boolean(False, variant_level=1))
1904
857
        return r
1905
858
 
1906
859
    def _reset_approved(self):
1907
 
        self.approved = None
 
860
        self._approved = None
1908
861
        return False
1909
 
 
 
862
    
1910
863
    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
864
        self.send_changedstate()
1915
 
 
1916
 
    #  D-Bus methods, signals & properties
1917
 
 
1918
 
    #  Interfaces
1919
 
 
1920
 
    #  Signals
1921
 
 
 
865
        self._approved = value
 
866
        gobject.timeout_add(self._timedelta_to_milliseconds
 
867
                            (self.approval_duration),
 
868
                            self._reset_approved)
 
869
    
 
870
    
 
871
    ## D-Bus methods, signals & properties
 
872
    _interface = "se.bsnet.fukt.Mandos.Client"
 
873
    
 
874
    ## Signals
 
875
    
1922
876
    # CheckerCompleted - signal
1923
877
    @dbus.service.signal(_interface, signature="nxs")
1924
878
    def CheckerCompleted(self, exitcode, waitstatus, command):
1925
879
        "D-Bus signal"
1926
880
        pass
1927
 
 
 
881
    
1928
882
    # CheckerStarted - signal
1929
883
    @dbus.service.signal(_interface, signature="s")
1930
884
    def CheckerStarted(self, command):
1931
885
        "D-Bus signal"
1932
886
        pass
1933
 
 
 
887
    
1934
888
    # PropertyChanged - signal
1935
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
889
    @dbus.service.signal(_interface, signature="sv")
1937
890
    def PropertyChanged(self, property, value):
1938
891
        "D-Bus signal"
1939
892
        pass
1940
 
 
 
893
    
1941
894
    # GotSecret - signal
1942
895
    @dbus.service.signal(_interface)
1943
896
    def GotSecret(self):
1946
899
        server to mandos-client
1947
900
        """
1948
901
        pass
1949
 
 
 
902
    
1950
903
    # Rejected - signal
1951
904
    @dbus.service.signal(_interface, signature="s")
1952
905
    def Rejected(self, reason):
1953
906
        "D-Bus signal"
1954
907
        pass
1955
 
 
 
908
    
1956
909
    # NeedApproval - signal
1957
910
    @dbus.service.signal(_interface, signature="tb")
1958
911
    def NeedApproval(self, timeout, default):
1959
912
        "D-Bus signal"
1960
913
        return self.need_approval()
1961
 
 
1962
 
    #  Methods
1963
 
 
 
914
    
 
915
    ## Methods
 
916
    
1964
917
    # Approve - method
1965
918
    @dbus.service.method(_interface, in_signature="b")
1966
919
    def Approve(self, value):
1967
920
        self.approve(value)
1968
 
 
 
921
    
1969
922
    # CheckedOK - method
1970
923
    @dbus.service.method(_interface)
1971
924
    def CheckedOK(self):
1972
 
        self.checked_ok()
1973
 
 
 
925
        return self.checked_ok()
 
926
    
1974
927
    # Enable - method
1975
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
928
    @dbus.service.method(_interface)
1977
929
    def Enable(self):
1978
930
        "D-Bus method"
1979
931
        self.enable()
1980
 
 
 
932
    
1981
933
    # StartChecker - method
1982
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
934
    @dbus.service.method(_interface)
1984
935
    def StartChecker(self):
1985
936
        "D-Bus method"
1986
937
        self.start_checker()
1987
 
 
 
938
    
1988
939
    # Disable - method
1989
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
940
    @dbus.service.method(_interface)
1991
941
    def Disable(self):
1992
942
        "D-Bus method"
1993
943
        self.disable()
1994
 
 
 
944
    
1995
945
    # StopChecker - method
1996
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
946
    @dbus.service.method(_interface)
1998
947
    def StopChecker(self):
1999
948
        self.stop_checker()
2000
 
 
2001
 
    #  Properties
2002
 
 
 
949
    
 
950
    ## Properties
 
951
    
2003
952
    # ApprovalPending - property
2004
953
    @dbus_service_property(_interface, signature="b", access="read")
2005
954
    def ApprovalPending_dbus_property(self):
2006
955
        return dbus.Boolean(bool(self.approvals_pending))
2007
 
 
 
956
    
2008
957
    # ApprovedByDefault - property
2009
 
    @dbus_service_property(_interface,
2010
 
                           signature="b",
 
958
    @dbus_service_property(_interface, signature="b",
2011
959
                           access="readwrite")
2012
960
    def ApprovedByDefault_dbus_property(self, value=None):
2013
961
        if value is None:       # get
2014
962
            return dbus.Boolean(self.approved_by_default)
2015
963
        self.approved_by_default = bool(value)
2016
 
 
 
964
        # Emit D-Bus signal
 
965
        self.PropertyChanged(dbus.String("ApprovedByDefault"),
 
966
                             dbus.Boolean(value, variant_level=1))
 
967
    
2017
968
    # ApprovalDelay - property
2018
 
    @dbus_service_property(_interface,
2019
 
                           signature="t",
 
969
    @dbus_service_property(_interface, signature="t",
2020
970
                           access="readwrite")
2021
971
    def ApprovalDelay_dbus_property(self, value=None):
2022
972
        if value is None:       # get
2023
 
            return dbus.UInt64(self.approval_delay.total_seconds()
2024
 
                               * 1000)
 
973
            return dbus.UInt64(self.approval_delay_milliseconds())
2025
974
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
 
 
 
975
        # Emit D-Bus signal
 
976
        self.PropertyChanged(dbus.String("ApprovalDelay"),
 
977
                             dbus.UInt64(value, variant_level=1))
 
978
    
2027
979
    # ApprovalDuration - property
2028
 
    @dbus_service_property(_interface,
2029
 
                           signature="t",
 
980
    @dbus_service_property(_interface, signature="t",
2030
981
                           access="readwrite")
2031
982
    def ApprovalDuration_dbus_property(self, value=None):
2032
983
        if value is None:       # get
2033
 
            return dbus.UInt64(self.approval_duration.total_seconds()
2034
 
                               * 1000)
 
984
            return dbus.UInt64(self._timedelta_to_milliseconds(
 
985
                    self.approval_duration))
2035
986
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
 
 
 
987
        # Emit D-Bus signal
 
988
        self.PropertyChanged(dbus.String("ApprovalDuration"),
 
989
                             dbus.UInt64(value, variant_level=1))
 
990
    
2037
991
    # Name - property
2038
 
    @dbus_annotations(
2039
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
992
    @dbus_service_property(_interface, signature="s", access="read")
2041
993
    def Name_dbus_property(self):
2042
994
        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
 
 
 
995
    
2051
996
    # Fingerprint - property
2052
 
    @dbus_annotations(
2053
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
997
    @dbus_service_property(_interface, signature="s", access="read")
2055
998
    def Fingerprint_dbus_property(self):
2056
999
        return dbus.String(self.fingerprint)
2057
 
 
 
1000
    
2058
1001
    # Host - property
2059
 
    @dbus_service_property(_interface,
2060
 
                           signature="s",
 
1002
    @dbus_service_property(_interface, signature="s",
2061
1003
                           access="readwrite")
2062
1004
    def Host_dbus_property(self, value=None):
2063
1005
        if value is None:       # get
2064
1006
            return dbus.String(self.host)
2065
 
        self.host = str(value)
2066
 
 
 
1007
        self.host = value
 
1008
        # Emit D-Bus signal
 
1009
        self.PropertyChanged(dbus.String("Host"),
 
1010
                             dbus.String(value, variant_level=1))
 
1011
    
2067
1012
    # Created - property
2068
 
    @dbus_annotations(
2069
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1013
    @dbus_service_property(_interface, signature="s", access="read")
2071
1014
    def Created_dbus_property(self):
2072
 
        return datetime_to_dbus(self.created)
2073
 
 
 
1015
        return dbus.String(self._datetime_to_dbus(self.created))
 
1016
    
2074
1017
    # LastEnabled - property
2075
1018
    @dbus_service_property(_interface, signature="s", access="read")
2076
1019
    def LastEnabled_dbus_property(self):
2077
 
        return datetime_to_dbus(self.last_enabled)
2078
 
 
 
1020
        if self.last_enabled is None:
 
1021
            return dbus.String("")
 
1022
        return dbus.String(self._datetime_to_dbus(self.last_enabled))
 
1023
    
2079
1024
    # Enabled - property
2080
 
    @dbus_service_property(_interface,
2081
 
                           signature="b",
 
1025
    @dbus_service_property(_interface, signature="b",
2082
1026
                           access="readwrite")
2083
1027
    def Enabled_dbus_property(self, value=None):
2084
1028
        if value is None:       # get
2087
1031
            self.enable()
2088
1032
        else:
2089
1033
            self.disable()
2090
 
 
 
1034
    
2091
1035
    # LastCheckedOK - property
2092
 
    @dbus_service_property(_interface,
2093
 
                           signature="s",
 
1036
    @dbus_service_property(_interface, signature="s",
2094
1037
                           access="readwrite")
2095
1038
    def LastCheckedOK_dbus_property(self, value=None):
2096
1039
        if value is not None:
2097
1040
            self.checked_ok()
2098
1041
            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
 
 
 
1042
        if self.last_checked_ok is None:
 
1043
            return dbus.String("")
 
1044
        return dbus.String(self._datetime_to_dbus(self
 
1045
                                                  .last_checked_ok))
 
1046
    
2111
1047
    # LastApprovalRequest - property
2112
1048
    @dbus_service_property(_interface, signature="s", access="read")
2113
1049
    def LastApprovalRequest_dbus_property(self):
2114
 
        return datetime_to_dbus(self.last_approval_request)
2115
 
 
 
1050
        if self.last_approval_request is None:
 
1051
            return dbus.String("")
 
1052
        return dbus.String(self.
 
1053
                           _datetime_to_dbus(self
 
1054
                                             .last_approval_request))
 
1055
    
2116
1056
    # Timeout - property
2117
 
    @dbus_service_property(_interface,
2118
 
                           signature="t",
 
1057
    @dbus_service_property(_interface, signature="t",
2119
1058
                           access="readwrite")
2120
1059
    def Timeout_dbus_property(self, value=None):
2121
1060
        if value is None:       # get
2122
 
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
 
        old_timeout = self.timeout
 
1061
            return dbus.UInt64(self.timeout_milliseconds())
2124
1062
        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
 
 
 
1063
        # Emit D-Bus signal
 
1064
        self.PropertyChanged(dbus.String("Timeout"),
 
1065
                             dbus.UInt64(value, variant_level=1))
 
1066
        if getattr(self, "disable_initiator_tag", None) is None:
 
1067
            return
 
1068
        # Reschedule timeout
 
1069
        gobject.source_remove(self.disable_initiator_tag)
 
1070
        self.disable_initiator_tag = None
 
1071
        time_to_die = (self.
 
1072
                       _timedelta_to_milliseconds((self
 
1073
                                                   .last_checked_ok
 
1074
                                                   + self.timeout)
 
1075
                                                  - datetime.datetime
 
1076
                                                  .utcnow()))
 
1077
        if time_to_die <= 0:
 
1078
            # The timeout has passed
 
1079
            self.disable()
 
1080
        else:
 
1081
            self.disable_initiator_tag = (gobject.timeout_add
 
1082
                                          (time_to_die, self.disable))
 
1083
    
2151
1084
    # Interval - property
2152
 
    @dbus_service_property(_interface,
2153
 
                           signature="t",
 
1085
    @dbus_service_property(_interface, signature="t",
2154
1086
                           access="readwrite")
2155
1087
    def Interval_dbus_property(self, value=None):
2156
1088
        if value is None:       # get
2157
 
            return dbus.UInt64(self.interval.total_seconds() * 1000)
 
1089
            return dbus.UInt64(self.interval_milliseconds())
2158
1090
        self.interval = datetime.timedelta(0, 0, 0, value)
 
1091
        # Emit D-Bus signal
 
1092
        self.PropertyChanged(dbus.String("Interval"),
 
1093
                             dbus.UInt64(value, variant_level=1))
2159
1094
        if getattr(self, "checker_initiator_tag", None) is None:
2160
1095
            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
 
1096
        # Reschedule checker run
 
1097
        gobject.source_remove(self.checker_initiator_tag)
 
1098
        self.checker_initiator_tag = (gobject.timeout_add
 
1099
                                      (value, self.start_checker))
 
1100
        self.start_checker()    # Start one now, too
2167
1101
 
2168
1102
    # Checker - property
2169
 
    @dbus_service_property(_interface,
2170
 
                           signature="s",
 
1103
    @dbus_service_property(_interface, signature="s",
2171
1104
                           access="readwrite")
2172
1105
    def Checker_dbus_property(self, value=None):
2173
1106
        if value is None:       # get
2174
1107
            return dbus.String(self.checker_command)
2175
 
        self.checker_command = str(value)
2176
 
 
 
1108
        self.checker_command = value
 
1109
        # Emit D-Bus signal
 
1110
        self.PropertyChanged(dbus.String("Checker"),
 
1111
                             dbus.String(self.checker_command,
 
1112
                                         variant_level=1))
 
1113
    
2177
1114
    # CheckerRunning - property
2178
 
    @dbus_service_property(_interface,
2179
 
                           signature="b",
 
1115
    @dbus_service_property(_interface, signature="b",
2180
1116
                           access="readwrite")
2181
1117
    def CheckerRunning_dbus_property(self, value=None):
2182
1118
        if value is None:       # get
2185
1121
            self.start_checker()
2186
1122
        else:
2187
1123
            self.stop_checker()
2188
 
 
 
1124
    
2189
1125
    # ObjectPath - property
2190
 
    @dbus_annotations(
2191
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
 
         "org.freedesktop.DBus.Deprecated": "true"})
2193
1126
    @dbus_service_property(_interface, signature="o", access="read")
2194
1127
    def ObjectPath_dbus_property(self):
2195
 
        return self.dbus_object_path  # is already a dbus.ObjectPath
2196
 
 
 
1128
        return self.dbus_object_path # is already a dbus.ObjectPath
 
1129
    
2197
1130
    # 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)
 
1131
    @dbus_service_property(_interface, signature="ay",
 
1132
                           access="write", byte_arrays=True)
2205
1133
    def Secret_dbus_property(self, value):
2206
 
        self.secret = bytes(value)
2207
 
 
 
1134
        self.secret = str(value)
 
1135
    
2208
1136
    del _interface
2209
1137
 
2210
1138
 
2211
1139
class ProxyClient(object):
2212
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
1140
    def __init__(self, child_pipe, fpr, address):
2213
1141
        self._pipe = child_pipe
2214
 
        self._pipe.send(('init', key_id, fpr, address))
 
1142
        self._pipe.send(('init', fpr, address))
2215
1143
        if not self._pipe.recv():
2216
 
            raise KeyError(key_id or fpr)
 
1144
            raise KeyError()
2217
1145
 
2218
1146
    def __getattribute__(self, name):
2219
 
        if name == '_pipe':
 
1147
        if(name == '_pipe'):
2220
1148
            return super(ProxyClient, self).__getattribute__(name)
2221
1149
        self._pipe.send(('getattr', name))
2222
1150
        data = self._pipe.recv()
2223
1151
        if data[0] == 'data':
2224
1152
            return data[1]
2225
1153
        if data[0] == 'function':
2226
 
 
2227
1154
            def func(*args, **kwargs):
2228
1155
                self._pipe.send(('funcall', name, args, kwargs))
2229
1156
                return self._pipe.recv()[1]
2230
 
 
2231
1157
            return func
2232
1158
 
2233
1159
    def __setattr__(self, name, value):
2234
 
        if name == '_pipe':
 
1160
        if(name == '_pipe'):
2235
1161
            return super(ProxyClient, self).__setattr__(name, value)
2236
1162
        self._pipe.send(('setattr', name, value))
2237
1163
 
2238
1164
 
2239
1165
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1166
    """A class to handle client connections.
2241
 
 
 
1167
    
2242
1168
    Instantiated once for each connection to handle it.
2243
1169
    Note: This will run in its own forked process."""
2244
 
 
 
1170
    
2245
1171
    def handle(self):
2246
1172
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1173
            logger.info("TCP connection from: %s",
2248
 
                        str(self.client_address))
 
1174
                        unicode(self.client_address))
2249
1175
            logger.debug("Pipe FD: %d",
2250
1176
                         self.server.child_pipe.fileno())
2251
1177
 
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"))
 
1178
            session = (gnutls.connection
 
1179
                       .ClientSession(self.request,
 
1180
                                      gnutls.connection
 
1181
                                      .X509Credentials()))
 
1182
 
 
1183
            # Note: gnutls.connection.X509Credentials is really a
 
1184
            # generic GnuTLS certificate credentials object so long as
 
1185
            # no X.509 keys are added to it.  Therefore, we can use it
 
1186
            # here despite using OpenPGP certificates.
 
1187
 
 
1188
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
1189
            #                      "+AES-256-CBC", "+SHA1",
 
1190
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
1191
            #                      "+DHE-DSS"))
2258
1192
            # Use a fallback default, since this MUST be set.
2259
1193
            priority = self.server.gnutls_priority
2260
1194
            if priority is None:
2261
1195
                priority = "NORMAL"
2262
 
            gnutls.priority_set_direct(session._c_object,
2263
 
                                       priority.encode("utf-8"),
2264
 
                                       None)
 
1196
            (gnutls.library.functions
 
1197
             .gnutls_priority_set_direct(session._c_object,
 
1198
                                         priority, None))
2265
1199
 
2266
1200
            # Start communication using the Mandos protocol
2267
1201
            # Get protocol number
2269
1203
            logger.debug("Protocol version: %r", line)
2270
1204
            try:
2271
1205
                if int(line.strip().split()[0]) > 1:
2272
 
                    raise RuntimeError(line)
2273
 
            except (ValueError, IndexError, RuntimeError) as error:
 
1206
                    raise RuntimeError
 
1207
            except (ValueError, IndexError, RuntimeError), error:
2274
1208
                logger.error("Unknown protocol version: %s", error)
2275
1209
                return
2276
1210
 
2277
1211
            # Start GnuTLS connection
2278
1212
            try:
2279
1213
                session.handshake()
2280
 
            except gnutls.Error as error:
 
1214
            except gnutls.errors.GNUTLSError, error:
2281
1215
                logger.warning("Handshake failed: %s", error)
2282
1216
                # Do not run session.bye() here: the session is not
2283
1217
                # established.  Just abandon the request.
2286
1220
 
2287
1221
            approval_required = False
2288
1222
            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,
 
1223
                try:
 
1224
                    fpr = self.fingerprint(self.peer_certificate
 
1225
                                           (session))
 
1226
                except (TypeError, gnutls.errors.GNUTLSError), error:
 
1227
                    logger.warning("Bad certificate: %s", error)
 
1228
                    return
 
1229
                logger.debug("Fingerprint: %s", fpr)
 
1230
 
 
1231
                try:
 
1232
                    client = ProxyClient(child_pipe, fpr,
2311
1233
                                         self.client_address)
2312
1234
                except KeyError:
2313
1235
                    return
2314
 
 
 
1236
                
2315
1237
                if client.approval_delay:
2316
1238
                    delay = client.approval_delay
2317
1239
                    client.approvals_pending += 1
2318
1240
                    approval_required = True
2319
 
 
 
1241
                
2320
1242
                while True:
2321
1243
                    if not client.enabled:
2322
 
                        logger.info("Client %s is disabled",
2323
 
                                    client.name)
 
1244
                        logger.warning("Client %s is disabled",
 
1245
                                       client.name)
2324
1246
                        if self.server.use_dbus:
2325
1247
                            # Emit D-Bus signal
2326
 
                            client.Rejected("Disabled")
 
1248
                            client.Rejected("Disabled")                    
2327
1249
                        return
2328
 
 
2329
 
                    if client.approved or not client.approval_delay:
2330
 
                        # We are approved or approval is disabled
 
1250
                    
 
1251
                    if client._approved or not client.approval_delay:
 
1252
                        #We are approved or approval is disabled
2331
1253
                        break
2332
 
                    elif client.approved is None:
 
1254
                    elif client._approved is None:
2333
1255
                        logger.info("Client %s needs approval",
2334
1256
                                    client.name)
2335
1257
                        if self.server.use_dbus:
2336
1258
                            # Emit D-Bus signal
2337
1259
                            client.NeedApproval(
2338
 
                                client.approval_delay.total_seconds()
2339
 
                                * 1000, client.approved_by_default)
 
1260
                                client.approval_delay_milliseconds(),
 
1261
                                client.approved_by_default)
2340
1262
                    else:
2341
1263
                        logger.warning("Client %s was not approved",
2342
1264
                                       client.name)
2344
1266
                            # Emit D-Bus signal
2345
1267
                            client.Rejected("Denied")
2346
1268
                        return
2347
 
 
2348
 
                    # wait until timeout or approved
 
1269
                    
 
1270
                    #wait until timeout or approved
 
1271
                    #x = float(client._timedelta_to_milliseconds(delay))
2349
1272
                    time = datetime.datetime.now()
2350
1273
                    client.changedstate.acquire()
2351
 
                    client.changedstate.wait(delay.total_seconds())
 
1274
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2352
1275
                    client.changedstate.release()
2353
1276
                    time2 = datetime.datetime.now()
2354
1277
                    if (time2 - time) >= delay:
2364
1287
                            break
2365
1288
                    else:
2366
1289
                        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
 
1290
                
 
1291
                sent_size = 0
 
1292
                while sent_size < len(client.secret):
 
1293
                    try:
 
1294
                        sent = session.send(client.secret[sent_size:])
 
1295
                    except (gnutls.errors.GNUTLSError), error:
 
1296
                        logger.warning("gnutls send failed")
 
1297
                        return
 
1298
                    logger.debug("Sent: %d, remaining: %d",
 
1299
                                 sent, len(client.secret)
 
1300
                                 - (sent_size + sent))
 
1301
                    sent_size += sent
2374
1302
 
2375
1303
                logger.info("Sending secret to %s", client.name)
2376
 
                # bump the timeout using extended_timeout
2377
 
                client.bump_timeout(client.extended_timeout)
 
1304
                # bump the timeout as if seen
 
1305
                client.checked_ok()
2378
1306
                if self.server.use_dbus:
2379
1307
                    # Emit D-Bus signal
2380
1308
                    client.GotSecret()
2381
 
 
 
1309
            
2382
1310
            finally:
2383
1311
                if approval_required:
2384
1312
                    client.approvals_pending -= 1
2385
1313
                try:
2386
1314
                    session.bye()
2387
 
                except gnutls.Error as error:
2388
 
                    logger.warning("GnuTLS bye failed",
2389
 
                                   exc_info=error)
2390
 
 
 
1315
                except (gnutls.errors.GNUTLSError), error:
 
1316
                    logger.warning("GnuTLS bye failed")
 
1317
    
2391
1318
    @staticmethod
2392
1319
    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""
 
1320
        "Return the peer's OpenPGP certificate as a bytestring"
 
1321
        # If not an OpenPGP certificate...
 
1322
        if (gnutls.library.functions
 
1323
            .gnutls_certificate_type_get(session._c_object)
 
1324
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
1325
            # ...do the normal thing
 
1326
            return session.peer_certificate
2409
1327
        list_size = ctypes.c_uint(1)
2410
 
        cert_list = (gnutls.certificate_get_peers
 
1328
        cert_list = (gnutls.library.functions
 
1329
                     .gnutls_certificate_get_peers
2411
1330
                     (session._c_object, ctypes.byref(list_size)))
2412
1331
        if not bool(cert_list) and list_size.value != 0:
2413
 
            raise gnutls.Error("error getting peer certificate")
 
1332
            raise gnutls.errors.GNUTLSError("error getting peer"
 
1333
                                            " certificate")
2414
1334
        if list_size.value == 0:
2415
1335
            return None
2416
1336
        cert = cert_list[0]
2417
1337
        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
 
 
 
1338
    
2453
1339
    @staticmethod
2454
1340
    def fingerprint(openpgp):
2455
1341
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1342
        # 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)))
 
1343
        datum = (gnutls.library.types
 
1344
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
 
1345
                                             ctypes.POINTER
 
1346
                                             (ctypes.c_ubyte)),
 
1347
                                 ctypes.c_uint(len(openpgp))))
2461
1348
        # New empty GnuTLS certificate
2462
 
        crt = gnutls.openpgp_crt_t()
2463
 
        gnutls.openpgp_crt_init(ctypes.byref(crt))
 
1349
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
 
1350
        (gnutls.library.functions
 
1351
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1352
        # Import the OpenPGP public key into the certificate
2465
 
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
 
                                  gnutls.OPENPGP_FMT_RAW)
 
1353
        (gnutls.library.functions
 
1354
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
 
1355
                                    gnutls.library.constants
 
1356
                                    .GNUTLS_OPENPGP_FMT_RAW))
2467
1357
        # Verify the self signature in the key
2468
1358
        crtverify = ctypes.c_uint()
2469
 
        gnutls.openpgp_crt_verify_self(crt, 0,
2470
 
                                       ctypes.byref(crtverify))
 
1359
        (gnutls.library.functions
 
1360
         .gnutls_openpgp_crt_verify_self(crt, 0,
 
1361
                                         ctypes.byref(crtverify)))
2471
1362
        if crtverify.value != 0:
2472
 
            gnutls.openpgp_crt_deinit(crt)
2473
 
            raise gnutls.CertificateSecurityError(code
2474
 
                                                  =crtverify.value)
 
1363
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
1364
            raise (gnutls.errors.CertificateSecurityError
 
1365
                   ("Verify failed"))
2475
1366
        # New buffer for the fingerprint
2476
1367
        buf = ctypes.create_string_buffer(20)
2477
1368
        buf_len = ctypes.c_size_t()
2478
1369
        # Get the fingerprint from the certificate into the buffer
2479
 
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
 
                                           ctypes.byref(buf_len))
 
1370
        (gnutls.library.functions
 
1371
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
1372
                                             ctypes.byref(buf_len)))
2481
1373
        # Deinit the certificate
2482
 
        gnutls.openpgp_crt_deinit(crt)
 
1374
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1375
        # Convert the buffer to a Python bytestring
2484
1376
        fpr = ctypes.string_at(buf, buf_len.value)
2485
1377
        # Convert the bytestring to hexadecimal notation
2486
 
        hex_fpr = binascii.hexlify(fpr).upper()
 
1378
        hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2487
1379
        return hex_fpr
2488
1380
 
2489
1381
 
2490
1382
class MultiprocessingMixIn(object):
2491
1383
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
 
 
2493
1384
    def sub_process_main(self, request, address):
2494
1385
        try:
2495
1386
            self.finish_request(request, address)
2496
 
        except Exception:
 
1387
        except:
2497
1388
            self.handle_error(request, address)
2498
1389
        self.close_request(request)
2499
 
 
 
1390
            
2500
1391
    def process_request(self, request, address):
2501
1392
        """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
 
 
 
1393
        multiprocessing.Process(target = self.sub_process_main,
 
1394
                                args = (request, address)).start()
2507
1395
 
2508
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1397
    """ adds a pipe to the MixIn """
2510
 
 
2511
1398
    def process_request(self, request, client_address):
2512
1399
        """Overrides and wraps the original process_request().
2513
 
 
 
1400
        
2514
1401
        This function creates a new pipe in self.pipe
2515
1402
        """
2516
1403
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1404
 
2518
 
        proc = MultiprocessingMixIn.process_request(self, request,
2519
 
                                                    client_address)
 
1405
        super(MultiprocessingMixInWithPipe,
 
1406
              self).process_request(request, client_address)
2520
1407
        self.child_pipe.close()
2521
 
        self.add_pipe(parent_pipe, proc)
 
1408
        self.add_pipe(parent_pipe)
2522
1409
 
2523
 
    def add_pipe(self, parent_pipe, proc):
 
1410
    def add_pipe(self, parent_pipe):
2524
1411
        """Dummy function; override as necessary"""
2525
 
        raise NotImplementedError()
2526
 
 
 
1412
        raise NotImplementedError
2527
1413
 
2528
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1415
                     socketserver.TCPServer, object):
2530
1416
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2531
 
 
 
1417
    
2532
1418
    Attributes:
2533
1419
        enabled:        Boolean; whether this server is activated yet
2534
1420
        interface:      None or a network interface name (string)
2535
1421
        use_ipv6:       Boolean; to use IPv6 or not
2536
1422
    """
2537
 
 
2538
1423
    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
 
        """
 
1424
                 interface=None, use_ipv6=True):
2545
1425
        self.interface = interface
2546
1426
        if use_ipv6:
2547
1427
            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
1428
        socketserver.TCPServer.__init__(self, server_address,
2576
1429
                                        RequestHandlerClass)
2577
 
 
2578
1430
    def server_bind(self):
2579
1431
        """This overrides the normal server_bind() function
2580
1432
        to bind to an interface if one was specified, and also NOT to
2581
1433
        bind to an address or port if they were not specified."""
2582
 
        global SO_BINDTODEVICE
2583
1434
        if self.interface is not None:
2584
1435
            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
 
1436
                logger.error("SO_BINDTODEVICE does not exist;"
 
1437
                             " cannot bind to interface %s",
 
1438
                             self.interface)
 
1439
            else:
 
1440
                try:
 
1441
                    self.socket.setsockopt(socket.SOL_SOCKET,
 
1442
                                           SO_BINDTODEVICE,
 
1443
                                           str(self.interface
 
1444
                                               + '\0'))
 
1445
                except socket.error, error:
 
1446
                    if error[0] == errno.EPERM:
 
1447
                        logger.error("No permission to"
 
1448
                                     " bind to interface %s",
 
1449
                                     self.interface)
 
1450
                    elif error[0] == errno.ENOPROTOOPT:
 
1451
                        logger.error("SO_BINDTODEVICE not available;"
 
1452
                                     " cannot bind to interface %s",
 
1453
                                     self.interface)
 
1454
                    else:
 
1455
                        raise
2606
1456
        # Only bind(2) the socket if we really need to.
2607
1457
        if self.server_address[0] or self.server_address[1]:
2608
1458
            if not self.server_address[0]:
2609
1459
                if self.address_family == socket.AF_INET6:
2610
 
                    any_address = "::"  # in6addr_any
 
1460
                    any_address = "::" # in6addr_any
2611
1461
                else:
2612
 
                    any_address = "0.0.0.0"  # INADDR_ANY
 
1462
                    any_address = socket.INADDR_ANY
2613
1463
                self.server_address = (any_address,
2614
1464
                                       self.server_address[1])
2615
1465
            elif not self.server_address[1]:
2616
 
                self.server_address = (self.server_address[0], 0)
 
1466
                self.server_address = (self.server_address[0],
 
1467
                                       0)
2617
1468
#                 if self.interface:
2618
1469
#                     self.server_address = (self.server_address[0],
2619
1470
#                                            0, # port
2625
1476
 
2626
1477
class MandosServer(IPv6_TCPServer):
2627
1478
    """Mandos server.
2628
 
 
 
1479
    
2629
1480
    Attributes:
2630
1481
        clients:        set of Client objects
2631
1482
        gnutls_priority GnuTLS priority string
2632
1483
        use_dbus:       Boolean; to emit D-Bus signals or not
2633
 
 
2634
 
    Assumes a GLib.MainLoop event loop.
 
1484
    
 
1485
    Assumes a gobject.MainLoop event loop.
2635
1486
    """
2636
 
 
2637
1487
    def __init__(self, server_address, RequestHandlerClass,
2638
 
                 interface=None,
2639
 
                 use_ipv6=True,
2640
 
                 clients=None,
2641
 
                 gnutls_priority=None,
2642
 
                 use_dbus=True,
2643
 
                 socketfd=None):
 
1488
                 interface=None, use_ipv6=True, clients=None,
 
1489
                 gnutls_priority=None, use_dbus=True):
2644
1490
        self.enabled = False
2645
1491
        self.clients = clients
2646
1492
        if self.clients is None:
2647
 
            self.clients = {}
 
1493
            self.clients = set()
2648
1494
        self.use_dbus = use_dbus
2649
1495
        self.gnutls_priority = gnutls_priority
2650
1496
        IPv6_TCPServer.__init__(self, server_address,
2651
1497
                                RequestHandlerClass,
2652
 
                                interface=interface,
2653
 
                                use_ipv6=use_ipv6,
2654
 
                                socketfd=socketfd)
2655
 
 
 
1498
                                interface = interface,
 
1499
                                use_ipv6 = use_ipv6)
2656
1500
    def server_activate(self):
2657
1501
        if self.enabled:
2658
1502
            return socketserver.TCPServer.server_activate(self)
2659
 
 
2660
1503
    def enable(self):
2661
1504
        self.enabled = True
2662
 
 
2663
 
    def add_pipe(self, parent_pipe, proc):
 
1505
    def add_pipe(self, parent_pipe):
2664
1506
        # Call "handle_ipc" for both data and EOF events
2665
 
        GLib.io_add_watch(
2666
 
            parent_pipe.fileno(),
2667
 
            GLib.IO_IN | GLib.IO_HUP,
2668
 
            functools.partial(self.handle_ipc,
2669
 
                              parent_pipe=parent_pipe,
2670
 
                              proc=proc))
2671
 
 
2672
 
    def handle_ipc(self, source, condition,
2673
 
                   parent_pipe=None,
2674
 
                   proc=None,
 
1507
        gobject.io_add_watch(parent_pipe.fileno(),
 
1508
                             gobject.IO_IN | gobject.IO_HUP,
 
1509
                             functools.partial(self.handle_ipc,
 
1510
                                               parent_pipe = parent_pipe))
 
1511
        
 
1512
    def handle_ipc(self, source, condition, parent_pipe=None,
2675
1513
                   client_object=None):
2676
 
        # error, or the other end of multiprocessing.Pipe has closed
2677
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
2678
 
            # Wait for other process to exit
2679
 
            proc.join()
 
1514
        condition_names = {
 
1515
            gobject.IO_IN: "IN",   # There is data to read.
 
1516
            gobject.IO_OUT: "OUT", # Data can be written (without
 
1517
                                    # blocking).
 
1518
            gobject.IO_PRI: "PRI", # There is urgent data to read.
 
1519
            gobject.IO_ERR: "ERR", # Error condition.
 
1520
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
 
1521
                                    # broken, usually for pipes and
 
1522
                                    # sockets).
 
1523
            }
 
1524
        conditions_string = ' | '.join(name
 
1525
                                       for cond, name in
 
1526
                                       condition_names.iteritems()
 
1527
                                       if cond & condition)
 
1528
        # error or the other end of multiprocessing.Pipe has closed
 
1529
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2680
1530
            return False
2681
 
 
 
1531
        
2682
1532
        # Read a request from the child
2683
1533
        request = parent_pipe.recv()
2684
1534
        command = request[0]
2685
 
 
 
1535
        
2686
1536
        if command == 'init':
2687
 
            key_id = request[1].decode("ascii")
2688
 
            fpr = request[2].decode("ascii")
2689
 
            address = request[3]
2690
 
 
2691
 
            for c in self.clients.values():
2692
 
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
 
                    continue
2694
 
                if key_id and c.key_id == key_id:
2695
 
                    client = c
2696
 
                    break
2697
 
                if fpr and c.fingerprint == fpr:
 
1537
            fpr = request[1]
 
1538
            address = request[2]
 
1539
            
 
1540
            for c in self.clients:
 
1541
                if c.fingerprint == fpr:
2698
1542
                    client = c
2699
1543
                    break
2700
1544
            else:
2701
 
                logger.info("Client not found for key ID: %s, address"
2702
 
                            ": %s", key_id or fpr, address)
 
1545
                logger.warning("Client not found for fingerprint: %s, ad"
 
1546
                               "dress: %s", fpr, address)
2703
1547
                if self.use_dbus:
2704
1548
                    # Emit D-Bus signal
2705
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
2706
 
                                                       address[0])
 
1549
                    mandos_dbus_service.ClientNotFound(fpr, address[0])
2707
1550
                parent_pipe.send(False)
2708
1551
                return False
2709
 
 
2710
 
            GLib.io_add_watch(
2711
 
                parent_pipe.fileno(),
2712
 
                GLib.IO_IN | GLib.IO_HUP,
2713
 
                functools.partial(self.handle_ipc,
2714
 
                                  parent_pipe=parent_pipe,
2715
 
                                  proc=proc,
2716
 
                                  client_object=client))
 
1552
            
 
1553
            gobject.io_add_watch(parent_pipe.fileno(),
 
1554
                                 gobject.IO_IN | gobject.IO_HUP,
 
1555
                                 functools.partial(self.handle_ipc,
 
1556
                                                   parent_pipe = parent_pipe,
 
1557
                                                   client_object = client))
2717
1558
            parent_pipe.send(True)
2718
 
            # remove the old hook in favor of the new above hook on
2719
 
            # same fileno
 
1559
            # remove the old hook in favor of the new above hook on same fileno
2720
1560
            return False
2721
1561
        if command == 'funcall':
2722
1562
            funcname = request[1]
2723
1563
            args = request[2]
2724
1564
            kwargs = request[3]
2725
 
 
2726
 
            parent_pipe.send(('data', getattr(client_object,
2727
 
                                              funcname)(*args,
2728
 
                                                        **kwargs)))
 
1565
            
 
1566
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2729
1567
 
2730
1568
        if command == 'getattr':
2731
1569
            attrname = request[1]
2732
 
            if isinstance(client_object.__getattribute__(attrname),
2733
 
                          collections.Callable):
2734
 
                parent_pipe.send(('function', ))
 
1570
            if callable(client_object.__getattribute__(attrname)):
 
1571
                parent_pipe.send(('function',))
2735
1572
            else:
2736
 
                parent_pipe.send((
2737
 
                    'data', client_object.__getattribute__(attrname)))
2738
 
 
 
1573
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
 
1574
        
2739
1575
        if command == 'setattr':
2740
1576
            attrname = request[1]
2741
1577
            value = request[2]
2744
1580
        return True
2745
1581
 
2746
1582
 
2747
 
def rfc3339_duration_to_delta(duration):
2748
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
 
 
2750
 
    >>> rfc3339_duration_to_delta("P7D")
2751
 
    datetime.timedelta(7)
2752
 
    >>> rfc3339_duration_to_delta("PT60S")
2753
 
    datetime.timedelta(0, 60)
2754
 
    >>> rfc3339_duration_to_delta("PT60M")
2755
 
    datetime.timedelta(0, 3600)
2756
 
    >>> rfc3339_duration_to_delta("PT24H")
2757
 
    datetime.timedelta(1)
2758
 
    >>> rfc3339_duration_to_delta("P1W")
2759
 
    datetime.timedelta(7)
2760
 
    >>> rfc3339_duration_to_delta("PT5M30S")
2761
 
    datetime.timedelta(0, 330)
2762
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2763
 
    datetime.timedelta(1, 200)
2764
 
    """
2765
 
 
2766
 
    # Parsing an RFC 3339 duration with regular expressions is not
2767
 
    # possible - there would have to be multiple places for the same
2768
 
    # values, like seconds.  The current code, while more esoteric, is
2769
 
    # cleaner without depending on a parsing library.  If Python had a
2770
 
    # built-in library for parsing we would use it, but we'd like to
2771
 
    # avoid excessive use of external libraries.
2772
 
 
2773
 
    # New type for defining tokens, syntax, and semantics all-in-one
2774
 
    Token = collections.namedtuple("Token", (
2775
 
        "regexp",  # To match token; if "value" is not None, must have
2776
 
                   # a "group" containing digits
2777
 
        "value",   # datetime.timedelta or None
2778
 
        "followers"))           # Tokens valid after this token
2779
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
2781
 
    token_end = Token(re.compile(r"$"), None, frozenset())
2782
 
    token_second = Token(re.compile(r"(\d+)S"),
2783
 
                         datetime.timedelta(seconds=1),
2784
 
                         frozenset((token_end, )))
2785
 
    token_minute = Token(re.compile(r"(\d+)M"),
2786
 
                         datetime.timedelta(minutes=1),
2787
 
                         frozenset((token_second, token_end)))
2788
 
    token_hour = Token(re.compile(r"(\d+)H"),
2789
 
                       datetime.timedelta(hours=1),
2790
 
                       frozenset((token_minute, token_end)))
2791
 
    token_time = Token(re.compile(r"T"),
2792
 
                       None,
2793
 
                       frozenset((token_hour, token_minute,
2794
 
                                  token_second)))
2795
 
    token_day = Token(re.compile(r"(\d+)D"),
2796
 
                      datetime.timedelta(days=1),
2797
 
                      frozenset((token_time, token_end)))
2798
 
    token_month = Token(re.compile(r"(\d+)M"),
2799
 
                        datetime.timedelta(weeks=4),
2800
 
                        frozenset((token_day, token_end)))
2801
 
    token_year = Token(re.compile(r"(\d+)Y"),
2802
 
                       datetime.timedelta(weeks=52),
2803
 
                       frozenset((token_month, token_end)))
2804
 
    token_week = Token(re.compile(r"(\d+)W"),
2805
 
                       datetime.timedelta(weeks=1),
2806
 
                       frozenset((token_end, )))
2807
 
    token_duration = Token(re.compile(r"P"), None,
2808
 
                           frozenset((token_year, token_month,
2809
 
                                      token_day, token_time,
2810
 
                                      token_week)))
2811
 
    # Define starting values:
2812
 
    # Value so far
2813
 
    value = datetime.timedelta()
2814
 
    found_token = None
2815
 
    # Following valid tokens
2816
 
    followers = frozenset((token_duration, ))
2817
 
    # String left to parse
2818
 
    s = duration
2819
 
    # Loop until end token is found
2820
 
    while found_token is not token_end:
2821
 
        # Search for any currently valid tokens
2822
 
        for token in followers:
2823
 
            match = token.regexp.match(s)
2824
 
            if match is not None:
2825
 
                # Token found
2826
 
                if token.value is not None:
2827
 
                    # Value found, parse digits
2828
 
                    factor = int(match.group(1), 10)
2829
 
                    # Add to value so far
2830
 
                    value += factor * token.value
2831
 
                # Strip token from string
2832
 
                s = token.regexp.sub("", s, 1)
2833
 
                # Go to found token
2834
 
                found_token = token
2835
 
                # Set valid next tokens
2836
 
                followers = found_token.followers
2837
 
                break
2838
 
        else:
2839
 
            # No currently valid tokens were found
2840
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
2841
 
                             .format(duration))
2842
 
    # End token found
2843
 
    return value
2844
 
 
2845
 
 
2846
1583
def string_to_delta(interval):
2847
1584
    """Parse a string and return a datetime.timedelta
2848
 
 
 
1585
    
2849
1586
    >>> string_to_delta('7d')
2850
1587
    datetime.timedelta(7)
2851
1588
    >>> string_to_delta('60s')
2859
1596
    >>> string_to_delta('5m 30s')
2860
1597
    datetime.timedelta(0, 330)
2861
1598
    """
2862
 
 
2863
 
    try:
2864
 
        return rfc3339_duration_to_delta(interval)
2865
 
    except ValueError:
2866
 
        pass
2867
 
 
2868
1599
    timevalue = datetime.timedelta(0)
2869
1600
    for s in interval.split():
2870
1601
        try:
2871
 
            suffix = s[-1]
 
1602
            suffix = unicode(s[-1])
2872
1603
            value = int(s[:-1])
2873
1604
            if suffix == "d":
2874
1605
                delta = datetime.timedelta(value)
2881
1612
            elif suffix == "w":
2882
1613
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2883
1614
            else:
2884
 
                raise ValueError("Unknown suffix {!r}".format(suffix))
2885
 
        except IndexError as e:
 
1615
                raise ValueError("Unknown suffix %r" % suffix)
 
1616
        except (ValueError, IndexError), e:
2886
1617
            raise ValueError(*(e.args))
2887
1618
        timevalue += delta
2888
1619
    return timevalue
2889
1620
 
2890
1621
 
2891
 
def daemon(nochdir=False, noclose=False):
 
1622
def if_nametoindex(interface):
 
1623
    """Call the C function if_nametoindex(), or equivalent
 
1624
    
 
1625
    Note: This function cannot accept a unicode string."""
 
1626
    global if_nametoindex
 
1627
    try:
 
1628
        if_nametoindex = (ctypes.cdll.LoadLibrary
 
1629
                          (ctypes.util.find_library("c"))
 
1630
                          .if_nametoindex)
 
1631
    except (OSError, AttributeError):
 
1632
        logger.warning("Doing if_nametoindex the hard way")
 
1633
        def if_nametoindex(interface):
 
1634
            "Get an interface index the hard way, i.e. using fcntl()"
 
1635
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
 
1636
            with contextlib.closing(socket.socket()) as s:
 
1637
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
1638
                                    struct.pack(str("16s16x"),
 
1639
                                                interface))
 
1640
            interface_index = struct.unpack(str("I"),
 
1641
                                            ifreq[16:20])[0]
 
1642
            return interface_index
 
1643
    return if_nametoindex(interface)
 
1644
 
 
1645
 
 
1646
def daemon(nochdir = False, noclose = False):
2892
1647
    """See daemon(3).  Standard BSD Unix function.
2893
 
 
 
1648
    
2894
1649
    This should really exist as os.daemon, but it doesn't (yet)."""
2895
1650
    if os.fork():
2896
1651
        sys.exit()
2901
1656
        sys.exit()
2902
1657
    if not noclose:
2903
1658
        # Close all standard open file descriptors
2904
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1659
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2905
1660
        if not stat.S_ISCHR(os.fstat(null).st_mode):
2906
1661
            raise OSError(errno.ENODEV,
2907
 
                          "{} not a character device"
2908
 
                          .format(os.devnull))
 
1662
                          "%s not a character device"
 
1663
                          % os.path.devnull)
2909
1664
        os.dup2(null, sys.stdin.fileno())
2910
1665
        os.dup2(null, sys.stdout.fileno())
2911
1666
        os.dup2(null, sys.stderr.fileno())
2914
1669
 
2915
1670
 
2916
1671
def main():
2917
 
 
 
1672
    
2918
1673
    ##################################################################
2919
1674
    # Parsing of options, both command line and config file
2920
 
 
2921
 
    parser = argparse.ArgumentParser()
2922
 
    parser.add_argument("-v", "--version", action="version",
2923
 
                        version="%(prog)s {}".format(version),
2924
 
                        help="show version number and exit")
2925
 
    parser.add_argument("-i", "--interface", metavar="IF",
2926
 
                        help="Bind to interface IF")
2927
 
    parser.add_argument("-a", "--address",
2928
 
                        help="Address to listen for requests on")
2929
 
    parser.add_argument("-p", "--port", type=int,
2930
 
                        help="Port number to receive requests on")
2931
 
    parser.add_argument("--check", action="store_true",
2932
 
                        help="Run self-test")
2933
 
    parser.add_argument("--debug", action="store_true",
2934
 
                        help="Debug mode; run in foreground and log"
2935
 
                        " to terminal", default=None)
2936
 
    parser.add_argument("--debuglevel", metavar="LEVEL",
2937
 
                        help="Debug level for stdout output")
2938
 
    parser.add_argument("--priority", help="GnuTLS"
2939
 
                        " priority string (see GnuTLS documentation)")
2940
 
    parser.add_argument("--servicename",
2941
 
                        metavar="NAME", help="Zeroconf service name")
2942
 
    parser.add_argument("--configdir",
2943
 
                        default="/etc/mandos", metavar="DIR",
2944
 
                        help="Directory to search for configuration"
2945
 
                        " files")
2946
 
    parser.add_argument("--no-dbus", action="store_false",
2947
 
                        dest="use_dbus", help="Do not provide D-Bus"
2948
 
                        " system bus interface", default=None)
2949
 
    parser.add_argument("--no-ipv6", action="store_false",
2950
 
                        dest="use_ipv6", help="Do not use IPv6",
2951
 
                        default=None)
2952
 
    parser.add_argument("--no-restore", action="store_false",
2953
 
                        dest="restore", help="Do not restore stored"
2954
 
                        " state", default=None)
2955
 
    parser.add_argument("--socket", type=int,
2956
 
                        help="Specify a file descriptor to a network"
2957
 
                        " socket to use instead of creating one")
2958
 
    parser.add_argument("--statedir", metavar="DIR",
2959
 
                        help="Directory to save/restore state in")
2960
 
    parser.add_argument("--foreground", action="store_true",
2961
 
                        help="Run in foreground", default=None)
2962
 
    parser.add_argument("--no-zeroconf", action="store_false",
2963
 
                        dest="zeroconf", help="Do not use Zeroconf",
2964
 
                        default=None)
2965
 
 
2966
 
    options = parser.parse_args()
2967
 
 
 
1675
    
 
1676
    parser = optparse.OptionParser(version = "%%prog %s" % version)
 
1677
    parser.add_option("-i", "--interface", type="string",
 
1678
                      metavar="IF", help="Bind to interface IF")
 
1679
    parser.add_option("-a", "--address", type="string",
 
1680
                      help="Address to listen for requests on")
 
1681
    parser.add_option("-p", "--port", type="int",
 
1682
                      help="Port number to receive requests on")
 
1683
    parser.add_option("--check", action="store_true",
 
1684
                      help="Run self-test")
 
1685
    parser.add_option("--debug", action="store_true",
 
1686
                      help="Debug mode; run in foreground and log to"
 
1687
                      " terminal")
 
1688
    parser.add_option("--debuglevel", type="string", metavar="LEVEL",
 
1689
                      help="Debug level for stdout output")
 
1690
    parser.add_option("--priority", type="string", help="GnuTLS"
 
1691
                      " priority string (see GnuTLS documentation)")
 
1692
    parser.add_option("--servicename", type="string",
 
1693
                      metavar="NAME", help="Zeroconf service name")
 
1694
    parser.add_option("--configdir", type="string",
 
1695
                      default="/etc/mandos", metavar="DIR",
 
1696
                      help="Directory to search for configuration"
 
1697
                      " files")
 
1698
    parser.add_option("--no-dbus", action="store_false",
 
1699
                      dest="use_dbus", help="Do not provide D-Bus"
 
1700
                      " system bus interface")
 
1701
    parser.add_option("--no-ipv6", action="store_false",
 
1702
                      dest="use_ipv6", help="Do not use IPv6")
 
1703
    options = parser.parse_args()[0]
 
1704
    
2968
1705
    if options.check:
2969
1706
        import doctest
2970
 
        fail_count, test_count = doctest.testmod()
2971
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
 
 
 
1707
        doctest.testmod()
 
1708
        sys.exit()
 
1709
    
2973
1710
    # Default values for config file for server-global settings
2974
 
    if gnutls.has_rawpk:
2975
 
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
 
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
 
    else:
2978
 
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
 
                    ":+SIGN-DSA-SHA256")
2980
 
    server_defaults = {"interface": "",
2981
 
                       "address": "",
2982
 
                       "port": "",
2983
 
                       "debug": "False",
2984
 
                       "priority": priority,
2985
 
                       "servicename": "Mandos",
2986
 
                       "use_dbus": "True",
2987
 
                       "use_ipv6": "True",
2988
 
                       "debuglevel": "",
2989
 
                       "restore": "True",
2990
 
                       "socket": "",
2991
 
                       "statedir": "/var/lib/mandos",
2992
 
                       "foreground": "False",
2993
 
                       "zeroconf": "True",
2994
 
                       }
2995
 
    del priority
2996
 
 
 
1711
    server_defaults = { "interface": "",
 
1712
                        "address": "",
 
1713
                        "port": "",
 
1714
                        "debug": "False",
 
1715
                        "priority":
 
1716
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
 
1717
                        "servicename": "Mandos",
 
1718
                        "use_dbus": "True",
 
1719
                        "use_ipv6": "True",
 
1720
                        "debuglevel": "",
 
1721
                        }
 
1722
    
2997
1723
    # Parse config file for server-global settings
2998
1724
    server_config = configparser.SafeConfigParser(server_defaults)
2999
1725
    del server_defaults
3000
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
1726
    server_config.read(os.path.join(options.configdir,
 
1727
                                    "mandos.conf"))
3001
1728
    # Convert the SafeConfigParser object to a dict
3002
1729
    server_settings = server_config.defaults()
3003
1730
    # Use the appropriate methods on the non-string config options
3004
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
 
                   "foreground", "zeroconf"):
 
1731
    for option in ("debug", "use_dbus", "use_ipv6"):
3006
1732
        server_settings[option] = server_config.getboolean("DEFAULT",
3007
1733
                                                           option)
3008
1734
    if server_settings["port"]:
3009
1735
        server_settings["port"] = server_config.getint("DEFAULT",
3010
1736
                                                       "port")
3011
 
    if server_settings["socket"]:
3012
 
        server_settings["socket"] = server_config.getint("DEFAULT",
3013
 
                                                         "socket")
3014
 
        # Later, stdin will, and stdout and stderr might, be dup'ed
3015
 
        # over with an opened os.devnull.  But we don't want this to
3016
 
        # happen with a supplied network socket.
3017
 
        if 0 <= server_settings["socket"] <= 2:
3018
 
            server_settings["socket"] = os.dup(server_settings
3019
 
                                               ["socket"])
3020
1737
    del server_config
3021
 
 
 
1738
    
3022
1739
    # Override the settings from the config file with command line
3023
1740
    # options, if set.
3024
1741
    for option in ("interface", "address", "port", "debug",
3025
 
                   "priority", "servicename", "configdir", "use_dbus",
3026
 
                   "use_ipv6", "debuglevel", "restore", "statedir",
3027
 
                   "socket", "foreground", "zeroconf"):
 
1742
                   "priority", "servicename", "configdir",
 
1743
                   "use_dbus", "use_ipv6", "debuglevel"):
3028
1744
        value = getattr(options, option)
3029
1745
        if value is not None:
3030
1746
            server_settings[option] = value
3031
1747
    del options
3032
1748
    # Force all strings to be unicode
3033
1749
    for option in server_settings.keys():
3034
 
        if isinstance(server_settings[option], bytes):
3035
 
            server_settings[option] = (server_settings[option]
3036
 
                                       .decode("utf-8"))
3037
 
    # Force all boolean options to be boolean
3038
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
 
                   "foreground", "zeroconf"):
3040
 
        server_settings[option] = bool(server_settings[option])
3041
 
    # Debug implies foreground
3042
 
    if server_settings["debug"]:
3043
 
        server_settings["foreground"] = True
 
1750
        if type(server_settings[option]) is str:
 
1751
            server_settings[option] = unicode(server_settings[option])
3044
1752
    # Now we have our good server settings in "server_settings"
3045
 
 
 
1753
    
3046
1754
    ##################################################################
3047
 
 
3048
 
    if (not server_settings["zeroconf"]
3049
 
        and not (server_settings["port"]
3050
 
                 or server_settings["socket"] != "")):
3051
 
        parser.error("Needs port or socket to work without Zeroconf")
3052
 
 
 
1755
    
3053
1756
    # For convenience
3054
1757
    debug = server_settings["debug"]
3055
1758
    debuglevel = server_settings["debuglevel"]
3056
1759
    use_dbus = server_settings["use_dbus"]
3057
1760
    use_ipv6 = server_settings["use_ipv6"]
3058
 
    stored_state_path = os.path.join(server_settings["statedir"],
3059
 
                                     stored_state_file)
3060
 
    foreground = server_settings["foreground"]
3061
 
    zeroconf = server_settings["zeroconf"]
3062
 
 
3063
 
    if debug:
3064
 
        initlogger(debug, logging.DEBUG)
3065
 
    else:
3066
 
        if not debuglevel:
3067
 
            initlogger(debug)
3068
 
        else:
3069
 
            level = getattr(logging, debuglevel.upper())
3070
 
            initlogger(debug, level)
3071
1761
 
3072
1762
    if server_settings["servicename"] != "Mandos":
3073
 
        syslogger.setFormatter(
3074
 
            logging.Formatter('Mandos ({}) [%(process)d]:'
3075
 
                              ' %(levelname)s: %(message)s'.format(
3076
 
                                  server_settings["servicename"])))
3077
 
 
 
1763
        syslogger.setFormatter(logging.Formatter
 
1764
                               ('Mandos (%s) [%%(process)d]:'
 
1765
                                ' %%(levelname)s: %%(message)s'
 
1766
                                % server_settings["servicename"]))
 
1767
    
3078
1768
    # Parse config file with clients
3079
 
    client_config = configparser.SafeConfigParser(Client
3080
 
                                                  .client_defaults)
 
1769
    client_defaults = { "timeout": "1h",
 
1770
                        "interval": "5m",
 
1771
                        "checker": "fping -q -- %%(host)s",
 
1772
                        "host": "",
 
1773
                        "approval_delay": "0s",
 
1774
                        "approval_duration": "1s",
 
1775
                        }
 
1776
    client_config = configparser.SafeConfigParser(client_defaults)
3081
1777
    client_config.read(os.path.join(server_settings["configdir"],
3082
1778
                                    "clients.conf"))
3083
 
 
 
1779
    
3084
1780
    global mandos_dbus_service
3085
1781
    mandos_dbus_service = None
3086
 
 
3087
 
    socketfd = None
3088
 
    if server_settings["socket"] != "":
3089
 
        socketfd = server_settings["socket"]
3090
 
    tcp_server = MandosServer(
3091
 
        (server_settings["address"], server_settings["port"]),
3092
 
        ClientHandler,
3093
 
        interface=(server_settings["interface"] or None),
3094
 
        use_ipv6=use_ipv6,
3095
 
        gnutls_priority=server_settings["priority"],
3096
 
        use_dbus=use_dbus,
3097
 
        socketfd=socketfd)
3098
 
    if not foreground:
3099
 
        pidfilename = "/run/mandos.pid"
3100
 
        if not os.path.isdir("/run/."):
3101
 
            pidfilename = "/var/run/mandos.pid"
3102
 
        pidfile = None
3103
 
        try:
3104
 
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3105
 
        except IOError as e:
3106
 
            logger.error("Could not open file %r", pidfilename,
3107
 
                         exc_info=e)
3108
 
 
3109
 
    for name, group in (("_mandos", "_mandos"),
3110
 
                        ("mandos", "mandos"),
3111
 
                        ("nobody", "nogroup")):
3112
 
        try:
3113
 
            uid = pwd.getpwnam(name).pw_uid
3114
 
            gid = pwd.getpwnam(group).pw_gid
3115
 
            break
 
1782
    
 
1783
    tcp_server = MandosServer((server_settings["address"],
 
1784
                               server_settings["port"]),
 
1785
                              ClientHandler,
 
1786
                              interface=(server_settings["interface"]
 
1787
                                         or None),
 
1788
                              use_ipv6=use_ipv6,
 
1789
                              gnutls_priority=
 
1790
                              server_settings["priority"],
 
1791
                              use_dbus=use_dbus)
 
1792
    if not debug:
 
1793
        pidfilename = "/var/run/mandos.pid"
 
1794
        try:
 
1795
            pidfile = open(pidfilename, "w")
 
1796
        except IOError:
 
1797
            logger.error("Could not open file %r", pidfilename)
 
1798
    
 
1799
    try:
 
1800
        uid = pwd.getpwnam("_mandos").pw_uid
 
1801
        gid = pwd.getpwnam("_mandos").pw_gid
 
1802
    except KeyError:
 
1803
        try:
 
1804
            uid = pwd.getpwnam("mandos").pw_uid
 
1805
            gid = pwd.getpwnam("mandos").pw_gid
3116
1806
        except KeyError:
3117
 
            continue
3118
 
    else:
3119
 
        uid = 65534
3120
 
        gid = 65534
 
1807
            try:
 
1808
                uid = pwd.getpwnam("nobody").pw_uid
 
1809
                gid = pwd.getpwnam("nobody").pw_gid
 
1810
            except KeyError:
 
1811
                uid = 65534
 
1812
                gid = 65534
3121
1813
    try:
3122
1814
        os.setgid(gid)
3123
1815
        os.setuid(uid)
3124
 
        if debug:
3125
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
 
                                                             gid))
3127
 
    except OSError as error:
3128
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
 
                       .format(uid, gid, os.strerror(error.errno)))
3130
 
        if error.errno != errno.EPERM:
3131
 
            raise
 
1816
    except OSError, error:
 
1817
        if error[0] != errno.EPERM:
 
1818
            raise error
 
1819
    
 
1820
    if not debug and not debuglevel:
 
1821
        syslogger.setLevel(logging.WARNING)
 
1822
        console.setLevel(logging.WARNING)
 
1823
    if debuglevel:
 
1824
        level = getattr(logging, debuglevel.upper())
 
1825
        syslogger.setLevel(level)
 
1826
        console.setLevel(level)
3132
1827
 
3133
1828
    if debug:
3134
1829
        # Enable all possible GnuTLS debugging
3135
 
 
 
1830
        
3136
1831
        # "Use a log level over 10 to enable all debugging options."
3137
1832
        # - GnuTLS manual
3138
 
        gnutls.global_set_log_level(11)
3139
 
 
3140
 
        @gnutls.log_func
 
1833
        gnutls.library.functions.gnutls_global_set_log_level(11)
 
1834
        
 
1835
        @gnutls.library.types.gnutls_log_func
3141
1836
        def debug_gnutls(level, string):
3142
1837
            logger.debug("GnuTLS: %s", string[:-1])
3143
 
 
3144
 
        gnutls.global_set_log_function(debug_gnutls)
3145
 
 
 
1838
        
 
1839
        (gnutls.library.functions
 
1840
         .gnutls_global_set_log_function(debug_gnutls))
 
1841
        
3146
1842
        # Redirect stdin so all checkers get /dev/null
3147
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1843
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3148
1844
        os.dup2(null, sys.stdin.fileno())
3149
1845
        if null > 2:
3150
1846
            os.close(null)
3151
 
 
 
1847
    else:
 
1848
        # No console logging
 
1849
        logger.removeHandler(console)
 
1850
    
3152
1851
    # Need to fork before connecting to D-Bus
3153
 
    if not foreground:
 
1852
    if not debug:
3154
1853
        # Close all input and output, do double fork, etc.
3155
1854
        daemon()
3156
 
 
3157
 
    # multiprocessing will use threads, so before we use GLib we need
3158
 
    # to inform GLib that threads will be used.
3159
 
    GLib.threads_init()
3160
 
 
 
1855
    
3161
1856
    global main_loop
3162
1857
    # From the Avahi example code
3163
 
    DBusGMainLoop(set_as_default=True)
3164
 
    main_loop = GLib.MainLoop()
 
1858
    DBusGMainLoop(set_as_default=True )
 
1859
    main_loop = gobject.MainLoop()
3165
1860
    bus = dbus.SystemBus()
3166
1861
    # End of Avahi example code
3167
1862
    if use_dbus:
3168
1863
        try:
3169
 
            bus_name = dbus.service.BusName("se.recompile.Mandos",
3170
 
                                            bus,
3171
 
                                            do_not_queue=True)
3172
 
            old_bus_name = dbus.service.BusName(
3173
 
                "se.bsnet.fukt.Mandos", bus,
3174
 
                do_not_queue=True)
3175
 
        except dbus.exceptions.DBusException as e:
3176
 
            logger.error("Disabling D-Bus:", exc_info=e)
 
1864
            bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
 
1865
                                            bus, do_not_queue=True)
 
1866
        except dbus.exceptions.NameExistsException, e:
 
1867
            logger.error(unicode(e) + ", disabling D-Bus")
3177
1868
            use_dbus = False
3178
1869
            server_settings["use_dbus"] = False
3179
1870
            tcp_server.use_dbus = False
3180
 
    if zeroconf:
3181
 
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
 
        service = AvahiServiceToSyslog(
3183
 
            name=server_settings["servicename"],
3184
 
            servicetype="_mandos._tcp",
3185
 
            protocol=protocol,
3186
 
            bus=bus)
3187
 
        if server_settings["interface"]:
3188
 
            service.interface = if_nametoindex(
3189
 
                server_settings["interface"].encode("utf-8"))
3190
 
 
 
1871
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
1872
    service = AvahiService(name = server_settings["servicename"],
 
1873
                           servicetype = "_mandos._tcp",
 
1874
                           protocol = protocol, bus = bus)
 
1875
    if server_settings["interface"]:
 
1876
        service.interface = (if_nametoindex
 
1877
                             (str(server_settings["interface"])))
 
1878
    
3191
1879
    global multiprocessing_manager
3192
1880
    multiprocessing_manager = multiprocessing.Manager()
3193
 
 
 
1881
    
3194
1882
    client_class = Client
3195
1883
    if use_dbus:
3196
 
        client_class = functools.partial(ClientDBus, bus=bus)
3197
 
 
3198
 
    client_settings = Client.config_parser(client_config)
3199
 
    old_client_settings = {}
3200
 
    clients_data = {}
3201
 
 
3202
 
    # This is used to redirect stdout and stderr for checker processes
3203
 
    global wnull
3204
 
    wnull = open(os.devnull, "w")  # A writable /dev/null
3205
 
    # Only used if server is running in foreground but not in debug
3206
 
    # mode
3207
 
    if debug or not foreground:
3208
 
        wnull.close()
3209
 
 
3210
 
    # Get client data and settings from last running state.
3211
 
    if server_settings["restore"]:
3212
 
        try:
3213
 
            with open(stored_state_path, "rb") as stored_state:
3214
 
                if sys.version_info.major == 2:
3215
 
                    clients_data, old_client_settings = pickle.load(
3216
 
                        stored_state)
3217
 
                else:
3218
 
                    bytes_clients_data, bytes_old_client_settings = (
3219
 
                        pickle.load(stored_state, encoding="bytes"))
3220
 
                    #   Fix bytes to strings
3221
 
                    #  clients_data
3222
 
                    # .keys()
3223
 
                    clients_data = {(key.decode("utf-8")
3224
 
                                     if isinstance(key, bytes)
3225
 
                                     else key): value
3226
 
                                    for key, value in
3227
 
                                    bytes_clients_data.items()}
3228
 
                    del bytes_clients_data
3229
 
                    for key in clients_data:
3230
 
                        value = {(k.decode("utf-8")
3231
 
                                  if isinstance(k, bytes) else k): v
3232
 
                                 for k, v in
3233
 
                                 clients_data[key].items()}
3234
 
                        clients_data[key] = value
3235
 
                        # .client_structure
3236
 
                        value["client_structure"] = [
3237
 
                            (s.decode("utf-8")
3238
 
                             if isinstance(s, bytes)
3239
 
                             else s) for s in
3240
 
                            value["client_structure"]]
3241
 
                        # .name & .host
3242
 
                        for k in ("name", "host"):
3243
 
                            if isinstance(value[k], bytes):
3244
 
                                value[k] = value[k].decode("utf-8")
3245
 
                        if not value.has_key("key_id"):
3246
 
                            value["key_id"] = ""
3247
 
                        elif not value.has_key("fingerprint"):
3248
 
                            value["fingerprint"] = ""
3249
 
                    #  old_client_settings
3250
 
                    # .keys()
3251
 
                    old_client_settings = {
3252
 
                        (key.decode("utf-8")
3253
 
                         if isinstance(key, bytes)
3254
 
                         else key): value
3255
 
                        for key, value in
3256
 
                        bytes_old_client_settings.items()}
3257
 
                    del bytes_old_client_settings
3258
 
                    # .host
3259
 
                    for value in old_client_settings.values():
3260
 
                        if isinstance(value["host"], bytes):
3261
 
                            value["host"] = (value["host"]
3262
 
                                             .decode("utf-8"))
3263
 
            os.remove(stored_state_path)
3264
 
        except IOError as e:
3265
 
            if e.errno == errno.ENOENT:
3266
 
                logger.warning("Could not load persistent state:"
3267
 
                               " {}".format(os.strerror(e.errno)))
3268
 
            else:
3269
 
                logger.critical("Could not load persistent state:",
3270
 
                                exc_info=e)
3271
 
                raise
3272
 
        except EOFError as e:
3273
 
            logger.warning("Could not load persistent state: "
3274
 
                           "EOFError:",
3275
 
                           exc_info=e)
3276
 
 
3277
 
    with PGPEngine() as pgp:
3278
 
        for client_name, client in clients_data.items():
3279
 
            # Skip removed clients
3280
 
            if client_name not in client_settings:
3281
 
                continue
3282
 
 
3283
 
            # Decide which value to use after restoring saved state.
3284
 
            # We have three different values: Old config file,
3285
 
            # new config file, and saved state.
3286
 
            # New config value takes precedence if it differs from old
3287
 
            # config value, otherwise use saved state.
3288
 
            for name, value in client_settings[client_name].items():
3289
 
                try:
3290
 
                    # For each value in new config, check if it
3291
 
                    # differs from the old config value (Except for
3292
 
                    # the "secret" attribute)
3293
 
                    if (name != "secret"
3294
 
                        and (value !=
3295
 
                             old_client_settings[client_name][name])):
3296
 
                        client[name] = value
3297
 
                except KeyError:
3298
 
                    pass
3299
 
 
3300
 
            # Clients who has passed its expire date can still be
3301
 
            # enabled if its last checker was successful.  A Client
3302
 
            # whose checker succeeded before we stored its state is
3303
 
            # assumed to have successfully run all checkers during
3304
 
            # downtime.
3305
 
            if client["enabled"]:
3306
 
                if datetime.datetime.utcnow() >= client["expires"]:
3307
 
                    if not client["last_checked_ok"]:
3308
 
                        logger.warning(
3309
 
                            "disabling client {} - Client never "
3310
 
                            "performed a successful checker".format(
3311
 
                                client_name))
3312
 
                        client["enabled"] = False
3313
 
                    elif client["last_checker_status"] != 0:
3314
 
                        logger.warning(
3315
 
                            "disabling client {} - Client last"
3316
 
                            " checker failed with error code"
3317
 
                            " {}".format(
3318
 
                                client_name,
3319
 
                                client["last_checker_status"]))
3320
 
                        client["enabled"] = False
3321
 
                    else:
3322
 
                        client["expires"] = (
3323
 
                            datetime.datetime.utcnow()
3324
 
                            + client["timeout"])
3325
 
                        logger.debug("Last checker succeeded,"
3326
 
                                     " keeping {} enabled".format(
3327
 
                                         client_name))
 
1884
        client_class = functools.partial(ClientDBus, bus = bus)
 
1885
    def client_config_items(config, section):
 
1886
        special_settings = {
 
1887
            "approved_by_default":
 
1888
                lambda: config.getboolean(section,
 
1889
                                          "approved_by_default"),
 
1890
            }
 
1891
        for name, value in config.items(section):
3328
1892
            try:
3329
 
                client["secret"] = pgp.decrypt(
3330
 
                    client["encrypted_secret"],
3331
 
                    client_settings[client_name]["secret"])
3332
 
            except PGPError:
3333
 
                # If decryption fails, we use secret from new settings
3334
 
                logger.debug("Failed to decrypt {} old secret".format(
3335
 
                    client_name))
3336
 
                client["secret"] = (client_settings[client_name]
3337
 
                                    ["secret"])
3338
 
 
3339
 
    # Add/remove clients based on new changes made to config
3340
 
    for client_name in (set(old_client_settings)
3341
 
                        - set(client_settings)):
3342
 
        del clients_data[client_name]
3343
 
    for client_name in (set(client_settings)
3344
 
                        - set(old_client_settings)):
3345
 
        clients_data[client_name] = client_settings[client_name]
3346
 
 
3347
 
    # Create all client objects
3348
 
    for client_name, client in clients_data.items():
3349
 
        tcp_server.clients[client_name] = client_class(
3350
 
            name=client_name,
3351
 
            settings=client,
3352
 
            server_settings=server_settings)
3353
 
 
 
1893
                yield (name, special_settings[name]())
 
1894
            except KeyError:
 
1895
                yield (name, value)
 
1896
    
 
1897
    tcp_server.clients.update(set(
 
1898
            client_class(name = section,
 
1899
                         config= dict(client_config_items(
 
1900
                        client_config, section)))
 
1901
            for section in client_config.sections()))
3354
1902
    if not tcp_server.clients:
3355
1903
        logger.warning("No clients defined")
3356
 
 
3357
 
    if not foreground:
3358
 
        if pidfile is not None:
3359
 
            pid = os.getpid()
3360
 
            try:
3361
 
                with pidfile:
3362
 
                    print(pid, file=pidfile)
3363
 
            except IOError:
3364
 
                logger.error("Could not write to file %r with PID %d",
3365
 
                             pidfilename, pid)
3366
 
        del pidfile
 
1904
        
 
1905
    if not debug:
 
1906
        try:
 
1907
            with pidfile:
 
1908
                pid = os.getpid()
 
1909
                pidfile.write(str(pid) + "\n".encode("utf-8"))
 
1910
            del pidfile
 
1911
        except IOError:
 
1912
            logger.error("Could not write to file %r with PID %d",
 
1913
                         pidfilename, pid)
 
1914
        except NameError:
 
1915
            # "pidfile" was never created
 
1916
            pass
3367
1917
        del pidfilename
3368
 
 
3369
 
    for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
 
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
 
                             lambda: main_loop.quit() and False)
3372
 
 
 
1918
        
 
1919
        signal.signal(signal.SIGINT, signal.SIG_IGN)
 
1920
 
 
1921
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
1922
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
 
1923
    
3373
1924
    if use_dbus:
3374
 
 
3375
 
        @alternate_dbus_interfaces(
3376
 
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
 
        class MandosDBusService(DBusObjectWithObjectManager):
 
1925
        class MandosDBusService(dbus.service.Object):
3378
1926
            """A D-Bus proxy object"""
3379
 
 
3380
1927
            def __init__(self):
3381
1928
                dbus.service.Object.__init__(self, bus, "/")
3382
 
 
3383
 
            _interface = "se.recompile.Mandos"
3384
 
 
 
1929
            _interface = "se.bsnet.fukt.Mandos"
 
1930
            
3385
1931
            @dbus.service.signal(_interface, signature="o")
3386
1932
            def ClientAdded(self, objpath):
3387
1933
                "D-Bus signal"
3388
1934
                pass
3389
 
 
 
1935
            
3390
1936
            @dbus.service.signal(_interface, signature="ss")
3391
 
            def ClientNotFound(self, key_id, address):
 
1937
            def ClientNotFound(self, fingerprint, address):
3392
1938
                "D-Bus signal"
3393
1939
                pass
3394
 
 
3395
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
 
                               "true"})
 
1940
            
3397
1941
            @dbus.service.signal(_interface, signature="os")
3398
1942
            def ClientRemoved(self, objpath, name):
3399
1943
                "D-Bus signal"
3400
1944
                pass
3401
 
 
3402
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
 
                               "true"})
 
1945
            
3404
1946
            @dbus.service.method(_interface, out_signature="ao")
3405
1947
            def GetAllClients(self):
3406
1948
                "D-Bus method"
3407
 
                return dbus.Array(c.dbus_object_path for c in
3408
 
                                  tcp_server.clients.values())
3409
 
 
3410
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
 
                               "true"})
 
1949
                return dbus.Array(c.dbus_object_path
 
1950
                                  for c in tcp_server.clients)
 
1951
            
3412
1952
            @dbus.service.method(_interface,
3413
1953
                                 out_signature="a{oa{sv}}")
3414
1954
            def GetAllClientsWithProperties(self):
3415
1955
                "D-Bus method"
3416
1956
                return dbus.Dictionary(
3417
 
                    {c.dbus_object_path: c.GetAll(
3418
 
                        "se.recompile.Mandos.Client")
3419
 
                     for c in tcp_server.clients.values()},
 
1957
                    ((c.dbus_object_path, c.GetAll(""))
 
1958
                     for c in tcp_server.clients),
3420
1959
                    signature="oa{sv}")
3421
 
 
 
1960
            
3422
1961
            @dbus.service.method(_interface, in_signature="o")
3423
1962
            def RemoveClient(self, object_path):
3424
1963
                "D-Bus method"
3425
 
                for c in tcp_server.clients.values():
 
1964
                for c in tcp_server.clients:
3426
1965
                    if c.dbus_object_path == object_path:
3427
 
                        del tcp_server.clients[c.name]
 
1966
                        tcp_server.clients.remove(c)
3428
1967
                        c.remove_from_connection()
3429
 
                        # Don't signal the disabling
 
1968
                        # Don't signal anything except ClientRemoved
3430
1969
                        c.disable(quiet=True)
3431
 
                        # Emit D-Bus signal for removal
3432
 
                        self.client_removed_signal(c)
 
1970
                        # Emit D-Bus signal
 
1971
                        self.ClientRemoved(object_path, c.name)
3433
1972
                        return
3434
1973
                raise KeyError(object_path)
3435
 
 
 
1974
            
3436
1975
            del _interface
3437
 
 
3438
 
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
 
                                 out_signature="a{oa{sa{sv}}}")
3440
 
            def GetManagedObjects(self):
3441
 
                """D-Bus method"""
3442
 
                return dbus.Dictionary(
3443
 
                    {client.dbus_object_path:
3444
 
                     dbus.Dictionary(
3445
 
                         {interface: client.GetAll(interface)
3446
 
                          for interface in
3447
 
                          client._get_all_interface_names()})
3448
 
                     for client in tcp_server.clients.values()})
3449
 
 
3450
 
            def client_added_signal(self, client):
3451
 
                """Send the new standard signal and the old signal"""
3452
 
                if use_dbus:
3453
 
                    # New standard signal
3454
 
                    self.InterfacesAdded(
3455
 
                        client.dbus_object_path,
3456
 
                        dbus.Dictionary(
3457
 
                            {interface: client.GetAll(interface)
3458
 
                             for interface in
3459
 
                             client._get_all_interface_names()}))
3460
 
                    # Old signal
3461
 
                    self.ClientAdded(client.dbus_object_path)
3462
 
 
3463
 
            def client_removed_signal(self, client):
3464
 
                """Send the new standard signal and the old signal"""
3465
 
                if use_dbus:
3466
 
                    # New standard signal
3467
 
                    self.InterfacesRemoved(
3468
 
                        client.dbus_object_path,
3469
 
                        client._get_all_interface_names())
3470
 
                    # Old signal
3471
 
                    self.ClientRemoved(client.dbus_object_path,
3472
 
                                       client.name)
3473
 
 
 
1976
        
3474
1977
        mandos_dbus_service = MandosDBusService()
3475
 
 
3476
 
    # Save modules to variables to exempt the modules from being
3477
 
    # unloaded before the function registered with atexit() is run.
3478
 
    mp = multiprocessing
3479
 
    wn = wnull
3480
 
 
 
1978
    
3481
1979
    def cleanup():
3482
1980
        "Cleanup function; run on exit"
3483
 
        if zeroconf:
3484
 
            service.cleanup()
3485
 
 
3486
 
        mp.active_children()
3487
 
        wn.close()
3488
 
        if not (tcp_server.clients or client_settings):
3489
 
            return
3490
 
 
3491
 
        # Store client before exiting. Secrets are encrypted with key
3492
 
        # based on what config file has. If config file is
3493
 
        # removed/edited, old secret will thus be unrecovable.
3494
 
        clients = {}
3495
 
        with PGPEngine() as pgp:
3496
 
            for client in tcp_server.clients.values():
3497
 
                key = client_settings[client.name]["secret"]
3498
 
                client.encrypted_secret = pgp.encrypt(client.secret,
3499
 
                                                      key)
3500
 
                client_dict = {}
3501
 
 
3502
 
                # A list of attributes that can not be pickled
3503
 
                # + secret.
3504
 
                exclude = {"bus", "changedstate", "secret",
3505
 
                           "checker", "server_settings"}
3506
 
                for name, typ in inspect.getmembers(dbus.service
3507
 
                                                    .Object):
3508
 
                    exclude.add(name)
3509
 
 
3510
 
                client_dict["encrypted_secret"] = (client
3511
 
                                                   .encrypted_secret)
3512
 
                for attr in client.client_structure:
3513
 
                    if attr not in exclude:
3514
 
                        client_dict[attr] = getattr(client, attr)
3515
 
 
3516
 
                clients[client.name] = client_dict
3517
 
                del client_settings[client.name]["secret"]
3518
 
 
3519
 
        try:
3520
 
            with tempfile.NamedTemporaryFile(
3521
 
                    mode='wb',
3522
 
                    suffix=".pickle",
3523
 
                    prefix='clients-',
3524
 
                    dir=os.path.dirname(stored_state_path),
3525
 
                    delete=False) as stored_state:
3526
 
                pickle.dump((clients, client_settings), stored_state,
3527
 
                            protocol=2)
3528
 
                tempname = stored_state.name
3529
 
            os.rename(tempname, stored_state_path)
3530
 
        except (IOError, OSError) as e:
3531
 
            if not debug:
3532
 
                try:
3533
 
                    os.remove(tempname)
3534
 
                except NameError:
3535
 
                    pass
3536
 
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
 
                logger.warning("Could not save persistent state: {}"
3538
 
                               .format(os.strerror(e.errno)))
3539
 
            else:
3540
 
                logger.warning("Could not save persistent state:",
3541
 
                               exc_info=e)
3542
 
                raise
3543
 
 
3544
 
        # Delete all clients, and settings from config
 
1981
        service.cleanup()
 
1982
        
3545
1983
        while tcp_server.clients:
3546
 
            name, client = tcp_server.clients.popitem()
 
1984
            client = tcp_server.clients.pop()
3547
1985
            if use_dbus:
3548
1986
                client.remove_from_connection()
3549
 
            # Don't signal the disabling
 
1987
            client.disable_hook = None
 
1988
            # Don't signal anything except ClientRemoved
3550
1989
            client.disable(quiet=True)
3551
 
            # Emit D-Bus signal for removal
3552
1990
            if use_dbus:
3553
 
                mandos_dbus_service.client_removed_signal(client)
3554
 
        client_settings.clear()
3555
 
 
 
1991
                # Emit D-Bus signal
 
1992
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
 
1993
                                                  client.name)
 
1994
    
3556
1995
    atexit.register(cleanup)
3557
 
 
3558
 
    for client in tcp_server.clients.values():
 
1996
    
 
1997
    for client in tcp_server.clients:
3559
1998
        if use_dbus:
3560
 
            # Emit D-Bus signal for adding
3561
 
            mandos_dbus_service.client_added_signal(client)
3562
 
        # Need to initiate checking of clients
3563
 
        if client.enabled:
3564
 
            client.init_checker()
3565
 
 
 
1999
            # Emit D-Bus signal
 
2000
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
 
2001
        client.enable()
 
2002
    
3566
2003
    tcp_server.enable()
3567
2004
    tcp_server.server_activate()
3568
 
 
 
2005
    
3569
2006
    # Find out what port we got
3570
 
    if zeroconf:
3571
 
        service.port = tcp_server.socket.getsockname()[1]
 
2007
    service.port = tcp_server.socket.getsockname()[1]
3572
2008
    if use_ipv6:
3573
2009
        logger.info("Now listening on address %r, port %d,"
3574
 
                    " flowinfo %d, scope_id %d",
3575
 
                    *tcp_server.socket.getsockname())
 
2010
                    " flowinfo %d, scope_id %d"
 
2011
                    % tcp_server.socket.getsockname())
3576
2012
    else:                       # IPv4
3577
 
        logger.info("Now listening on address %r, port %d",
3578
 
                    *tcp_server.socket.getsockname())
3579
 
 
3580
 
    # service.interface = tcp_server.socket.getsockname()[3]
3581
 
 
 
2013
        logger.info("Now listening on address %r, port %d"
 
2014
                    % tcp_server.socket.getsockname())
 
2015
    
 
2016
    #service.interface = tcp_server.socket.getsockname()[3]
 
2017
    
3582
2018
    try:
3583
 
        if zeroconf:
3584
 
            # From the Avahi example code
3585
 
            try:
3586
 
                service.activate()
3587
 
            except dbus.exceptions.DBusException as error:
3588
 
                logger.critical("D-Bus Exception", exc_info=error)
3589
 
                cleanup()
3590
 
                sys.exit(1)
3591
 
            # End of Avahi example code
3592
 
 
3593
 
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
 
                          lambda *args, **kwargs:
3595
 
                          (tcp_server.handle_request
3596
 
                           (*args[2:], **kwargs) or True))
3597
 
 
 
2019
        # From the Avahi example code
 
2020
        try:
 
2021
            service.activate()
 
2022
        except dbus.exceptions.DBusException, error:
 
2023
            logger.critical("DBusException: %s", error)
 
2024
            cleanup()
 
2025
            sys.exit(1)
 
2026
        # End of Avahi example code
 
2027
        
 
2028
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
2029
                             lambda *args, **kwargs:
 
2030
                             (tcp_server.handle_request
 
2031
                              (*args[2:], **kwargs) or True))
 
2032
        
3598
2033
        logger.debug("Starting main loop")
3599
2034
        main_loop.run()
3600
 
    except AvahiError as error:
3601
 
        logger.critical("Avahi Error", exc_info=error)
 
2035
    except AvahiError, error:
 
2036
        logger.critical("AvahiError: %s", error)
3602
2037
        cleanup()
3603
2038
        sys.exit(1)
3604
2039
    except KeyboardInterrupt:
3609
2044
    # Must run before the D-Bus bus name gets deregistered
3610
2045
    cleanup()
3611
2046
 
3612
 
 
3613
2047
if __name__ == '__main__':
3614
2048
    main()