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  • Committer: Teddy Hogeborn
  • Date: 2019-02-13 08:45:09 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 382.
  • Revision ID: teddy@recompile.se-20190213084509-bb2uu006vip11v7l
Remove modification of debian/control file

* debian/rules (override_dh_shlibdeps-arch): Commented out.

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added added

removed removed

Lines of Context:
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 © 2008-2011 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
 
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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
 
#     This program is distributed in the hope that it will be useful,
23
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
24
#     Mandos is distributed in the hope that it will be useful, but
 
25
#     WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25
27
#     GNU General Public License for more details.
26
 
 
28
#
27
29
# You should have received a copy of the GNU General Public License
28
 
# along with this program.  If not, see
29
 
# <http://www.gnu.org/licenses/>.
30
 
 
30
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
 
 
33
#
33
34
 
34
35
from __future__ import (division, absolute_import, print_function,
35
36
                        unicode_literals)
36
37
 
37
 
import SocketServer as socketserver
 
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
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
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
 
51
try:
 
52
    import ConfigParser as configparser
 
53
except ImportError:
 
54
    import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
 
import cPickle as pickle
 
69
try:
 
70
    import cPickle as pickle
 
71
except ImportError:
 
72
    import pickle
64
73
import multiprocessing
65
74
import types
 
75
import binascii
 
76
import tempfile
 
77
import itertools
 
78
import collections
 
79
import codecs
66
80
 
67
81
import dbus
68
82
import dbus.service
69
 
import gobject
70
 
import avahi
 
83
from gi.repository import GLib
71
84
from dbus.mainloop.glib import DBusGMainLoop
72
85
import ctypes
73
86
import ctypes.util
74
87
import xml.dom.minidom
75
88
import inspect
76
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
77
91
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:
78
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
95
except AttributeError:
80
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
81
99
        from IN import SO_BINDTODEVICE
82
100
    except ImportError:
83
 
        SO_BINDTODEVICE = None
84
 
 
85
 
 
86
 
version = "1.4.1"
87
 
 
88
 
#logger = logging.getLogger('mandos')
89
 
logger = logging.Logger('mandos')
90
 
syslogger = (logging.handlers.SysLogHandler
91
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
 
              address = str("/dev/log")))
93
 
syslogger.setFormatter(logging.Formatter
94
 
                       ('Mandos [%(process)d]: %(levelname)s:'
95
 
                        ' %(message)s'))
96
 
logger.addHandler(syslogger)
97
 
 
98
 
console = logging.StreamHandler()
99
 
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
 
                                       ' %(levelname)s:'
101
 
                                       ' %(message)s'))
102
 
logger.addHandler(console)
 
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
    It is instantiated once, and simulates having an Avahi module."""
 
281
    IF_UNSPEC = -1               # avahi-common/address.h
 
282
    PROTO_UNSPEC = -1            # avahi-common/address.h
 
283
    PROTO_INET = 0               # avahi-common/address.h
 
284
    PROTO_INET6 = 1              # avahi-common/address.h
 
285
    DBUS_NAME = "org.freedesktop.Avahi"
 
286
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
 
287
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
 
288
    DBUS_PATH_SERVER = "/"
 
289
 
 
290
    def string_array_to_txt_array(self, 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
avahi = Avahi()
 
302
 
103
303
 
104
304
class AvahiError(Exception):
105
305
    def __init__(self, value, *args, **kwargs):
106
306
        self.value = value
107
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
108
 
    def __unicode__(self):
109
 
        return unicode(repr(self.value))
 
307
        return super(AvahiError, self).__init__(value, *args,
 
308
                                                **kwargs)
 
309
 
110
310
 
111
311
class AvahiServiceError(AvahiError):
112
312
    pass
113
313
 
 
314
 
114
315
class AvahiGroupError(AvahiError):
115
316
    pass
116
317
 
117
318
 
118
319
class AvahiService(object):
119
320
    """An Avahi (Zeroconf) service.
120
 
    
 
321
 
121
322
    Attributes:
122
323
    interface: integer; avahi.IF_UNSPEC or an interface index.
123
324
               Used to optionally bind to the specified interface.
124
325
    name: string; Example: 'Mandos'
125
326
    type: string; Example: '_mandos._tcp'.
126
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
327
     See <https://www.iana.org/assignments/service-names-port-numbers>
127
328
    port: integer; what port to announce
128
329
    TXT: list of strings; TXT record for the service
129
330
    domain: string; Domain to publish on, default to .local if empty.
135
336
    server: D-Bus Server
136
337
    bus: dbus.SystemBus()
137
338
    """
138
 
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
 
                 servicetype = None, port = None, TXT = None,
140
 
                 domain = "", host = "", max_renames = 32768,
141
 
                 protocol = avahi.PROTO_UNSPEC, bus = None):
 
339
 
 
340
    def __init__(self,
 
341
                 interface=avahi.IF_UNSPEC,
 
342
                 name=None,
 
343
                 servicetype=None,
 
344
                 port=None,
 
345
                 TXT=None,
 
346
                 domain="",
 
347
                 host="",
 
348
                 max_renames=32768,
 
349
                 protocol=avahi.PROTO_UNSPEC,
 
350
                 bus=None):
142
351
        self.interface = interface
143
352
        self.name = name
144
353
        self.type = servicetype
153
362
        self.server = None
154
363
        self.bus = bus
155
364
        self.entry_group_state_changed_match = None
156
 
    def rename(self):
 
365
 
 
366
    def rename(self, remove=True):
157
367
        """Derived from the Avahi example code"""
158
368
        if self.rename_count >= self.max_renames:
159
369
            logger.critical("No suitable Zeroconf service name found"
160
370
                            " after %i retries, exiting.",
161
371
                            self.rename_count)
162
372
            raise AvahiServiceError("Too many renames")
163
 
        self.name = unicode(self.server
164
 
                            .GetAlternativeServiceName(self.name))
 
373
        self.name = str(
 
374
            self.server.GetAlternativeServiceName(self.name))
 
375
        self.rename_count += 1
165
376
        logger.info("Changing Zeroconf service name to %r ...",
166
377
                    self.name)
167
 
        syslogger.setFormatter(logging.Formatter
168
 
                               ('Mandos (%s) [%%(process)d]:'
169
 
                                ' %%(levelname)s: %%(message)s'
170
 
                                % self.name))
171
 
        self.remove()
 
378
        if remove:
 
379
            self.remove()
172
380
        try:
173
381
            self.add()
174
382
        except dbus.exceptions.DBusException as error:
175
 
            logger.critical("DBusException: %s", error)
176
 
            self.cleanup()
177
 
            os._exit(1)
178
 
        self.rename_count += 1
 
383
            if (error.get_dbus_name()
 
384
                == "org.freedesktop.Avahi.CollisionError"):
 
385
                logger.info("Local Zeroconf service name collision.")
 
386
                return self.rename(remove=False)
 
387
            else:
 
388
                logger.critical("D-Bus Exception", exc_info=error)
 
389
                self.cleanup()
 
390
                os._exit(1)
 
391
 
179
392
    def remove(self):
180
393
        """Derived from the Avahi example code"""
181
394
        if self.entry_group_state_changed_match is not None:
183
396
            self.entry_group_state_changed_match = None
184
397
        if self.group is not None:
185
398
            self.group.Reset()
 
399
 
186
400
    def add(self):
187
401
        """Derived from the Avahi example code"""
188
402
        self.remove()
193
407
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
408
        self.entry_group_state_changed_match = (
195
409
            self.group.connect_to_signal(
196
 
                'StateChanged', self .entry_group_state_changed))
 
410
                'StateChanged', self.entry_group_state_changed))
197
411
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
412
                     self.name, self.type)
199
413
        self.group.AddService(
205
419
            dbus.UInt16(self.port),
206
420
            avahi.string_array_to_txt_array(self.TXT))
207
421
        self.group.Commit()
 
422
 
208
423
    def entry_group_state_changed(self, state, error):
209
424
        """Derived from the Avahi example code"""
210
425
        logger.debug("Avahi entry group state change: %i", state)
211
 
        
 
426
 
212
427
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
428
            logger.debug("Zeroconf service established.")
214
429
        elif state == avahi.ENTRY_GROUP_COLLISION:
216
431
            self.rename()
217
432
        elif state == avahi.ENTRY_GROUP_FAILURE:
218
433
            logger.critical("Avahi: Error in group state changed %s",
219
 
                            unicode(error))
220
 
            raise AvahiGroupError("State changed: %s"
221
 
                                  % unicode(error))
 
434
                            str(error))
 
435
            raise AvahiGroupError("State changed: {!s}".format(error))
 
436
 
222
437
    def cleanup(self):
223
438
        """Derived from the Avahi example code"""
224
439
        if self.group is not None:
225
440
            try:
226
441
                self.group.Free()
227
442
            except (dbus.exceptions.UnknownMethodException,
228
 
                    dbus.exceptions.DBusException) as e:
 
443
                    dbus.exceptions.DBusException):
229
444
                pass
230
445
            self.group = None
231
446
        self.remove()
 
447
 
232
448
    def server_state_changed(self, state, error=None):
233
449
        """Derived from the Avahi example code"""
234
450
        logger.debug("Avahi server state change: %i", state)
235
 
        bad_states = { avahi.SERVER_INVALID:
236
 
                           "Zeroconf server invalid",
237
 
                       avahi.SERVER_REGISTERING: None,
238
 
                       avahi.SERVER_COLLISION:
239
 
                           "Zeroconf server name collision",
240
 
                       avahi.SERVER_FAILURE:
241
 
                           "Zeroconf server failure" }
 
451
        bad_states = {
 
452
            avahi.SERVER_INVALID: "Zeroconf server invalid",
 
453
            avahi.SERVER_REGISTERING: None,
 
454
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
 
455
            avahi.SERVER_FAILURE: "Zeroconf server failure",
 
456
        }
242
457
        if state in bad_states:
243
458
            if bad_states[state] is not None:
244
459
                if error is None:
247
462
                    logger.error(bad_states[state] + ": %r", error)
248
463
            self.cleanup()
249
464
        elif state == avahi.SERVER_RUNNING:
250
 
            self.add()
 
465
            try:
 
466
                self.add()
 
467
            except dbus.exceptions.DBusException as error:
 
468
                if (error.get_dbus_name()
 
469
                    == "org.freedesktop.Avahi.CollisionError"):
 
470
                    logger.info("Local Zeroconf service name"
 
471
                                " collision.")
 
472
                    return self.rename(remove=False)
 
473
                else:
 
474
                    logger.critical("D-Bus Exception", exc_info=error)
 
475
                    self.cleanup()
 
476
                    os._exit(1)
251
477
        else:
252
478
            if error is None:
253
479
                logger.debug("Unknown state: %r", state)
254
480
            else:
255
481
                logger.debug("Unknown state: %r: %r", state, error)
 
482
 
256
483
    def activate(self):
257
484
        """Derived from the Avahi example code"""
258
485
        if self.server is None:
262
489
                                    follow_name_owner_changes=True),
263
490
                avahi.DBUS_INTERFACE_SERVER)
264
491
        self.server.connect_to_signal("StateChanged",
265
 
                                 self.server_state_changed)
 
492
                                      self.server_state_changed)
266
493
        self.server_state_changed(self.server.GetState())
267
494
 
268
495
 
269
 
def _timedelta_to_milliseconds(td):
270
 
    "Convert a datetime.timedelta() to milliseconds"
271
 
    return ((td.days * 24 * 60 * 60 * 1000)
272
 
            + (td.seconds * 1000)
273
 
            + (td.microseconds // 1000))
274
 
        
 
496
class AvahiServiceToSyslog(AvahiService):
 
497
    def rename(self, *args, **kwargs):
 
498
        """Add the new name to the syslog messages"""
 
499
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
 
500
        syslogger.setFormatter(logging.Formatter(
 
501
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
 
502
            .format(self.name)))
 
503
        return ret
 
504
 
 
505
 
 
506
# Pretend that we have a GnuTLS module
 
507
class GnuTLS(object):
 
508
    """This isn't so much a class as it is a module-like namespace.
 
509
    It is instantiated once, and simulates having a GnuTLS module."""
 
510
 
 
511
    library = ctypes.util.find_library("gnutls")
 
512
    if library is None:
 
513
        library = ctypes.util.find_library("gnutls-deb0")
 
514
    _library = ctypes.cdll.LoadLibrary(library)
 
515
    del library
 
516
    _need_version = b"3.3.0"
 
517
    _tls_rawpk_version = b"3.6.6"
 
518
 
 
519
    def __init__(self):
 
520
        # Need to use "self" here, since this method is called before
 
521
        # the assignment to the "gnutls" global variable happens.
 
522
        if self.check_version(self._need_version) is None:
 
523
            raise self.Error("Needs GnuTLS {} or later"
 
524
                             .format(self._need_version))
 
525
 
 
526
    # Unless otherwise indicated, the constants and types below are
 
527
    # all from the gnutls/gnutls.h C header file.
 
528
 
 
529
    # Constants
 
530
    E_SUCCESS = 0
 
531
    E_INTERRUPTED = -52
 
532
    E_AGAIN = -28
 
533
    CRT_OPENPGP = 2
 
534
    CRT_RAWPK = 3
 
535
    CLIENT = 2
 
536
    SHUT_RDWR = 0
 
537
    CRD_CERTIFICATE = 1
 
538
    E_NO_CERTIFICATE_FOUND = -49
 
539
    X509_FMT_DER = 0
 
540
    NO_TICKETS = 1<<10
 
541
    ENABLE_RAWPK = 1<<18
 
542
    CTYPE_PEERS = 3
 
543
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
 
544
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
 
545
 
 
546
    # Types
 
547
    class session_int(ctypes.Structure):
 
548
        _fields_ = []
 
549
    session_t = ctypes.POINTER(session_int)
 
550
 
 
551
    class certificate_credentials_st(ctypes.Structure):
 
552
        _fields_ = []
 
553
    certificate_credentials_t = ctypes.POINTER(
 
554
        certificate_credentials_st)
 
555
    certificate_type_t = ctypes.c_int
 
556
 
 
557
    class datum_t(ctypes.Structure):
 
558
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
 
559
                    ('size', ctypes.c_uint)]
 
560
 
 
561
    class openpgp_crt_int(ctypes.Structure):
 
562
        _fields_ = []
 
563
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
 
564
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
565
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
 
566
    credentials_type_t = ctypes.c_int
 
567
    transport_ptr_t = ctypes.c_void_p
 
568
    close_request_t = ctypes.c_int
 
569
 
 
570
    # Exceptions
 
571
    class Error(Exception):
 
572
        # We need to use the class name "GnuTLS" here, since this
 
573
        # exception might be raised from within GnuTLS.__init__,
 
574
        # which is called before the assignment to the "gnutls"
 
575
        # global variable has happened.
 
576
        def __init__(self, message=None, code=None, args=()):
 
577
            # Default usage is by a message string, but if a return
 
578
            # code is passed, convert it to a string with
 
579
            # gnutls.strerror()
 
580
            self.code = code
 
581
            if message is None and code is not None:
 
582
                message = GnuTLS.strerror(code)
 
583
            return super(GnuTLS.Error, self).__init__(
 
584
                message, *args)
 
585
 
 
586
    class CertificateSecurityError(Error):
 
587
        pass
 
588
 
 
589
    # Classes
 
590
    class Credentials(object):
 
591
        def __init__(self):
 
592
            self._c_object = gnutls.certificate_credentials_t()
 
593
            gnutls.certificate_allocate_credentials(
 
594
                ctypes.byref(self._c_object))
 
595
            self.type = gnutls.CRD_CERTIFICATE
 
596
 
 
597
        def __del__(self):
 
598
            gnutls.certificate_free_credentials(self._c_object)
 
599
 
 
600
    class ClientSession(object):
 
601
        def __init__(self, socket, credentials=None):
 
602
            self._c_object = gnutls.session_t()
 
603
            gnutls_flags = gnutls.CLIENT
 
604
            if gnutls.check_version("3.5.6"):
 
605
                gnutls_flags |= gnutls.NO_TICKETS
 
606
            if gnutls.has_rawpk:
 
607
                gnutls_flags |= gnutls.ENABLE_RAWPK
 
608
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
 
609
            del gnutls_flags
 
610
            gnutls.set_default_priority(self._c_object)
 
611
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
 
612
            gnutls.handshake_set_private_extensions(self._c_object,
 
613
                                                    True)
 
614
            self.socket = socket
 
615
            if credentials is None:
 
616
                credentials = gnutls.Credentials()
 
617
            gnutls.credentials_set(self._c_object, credentials.type,
 
618
                                   ctypes.cast(credentials._c_object,
 
619
                                               ctypes.c_void_p))
 
620
            self.credentials = credentials
 
621
 
 
622
        def __del__(self):
 
623
            gnutls.deinit(self._c_object)
 
624
 
 
625
        def handshake(self):
 
626
            return gnutls.handshake(self._c_object)
 
627
 
 
628
        def send(self, data):
 
629
            data = bytes(data)
 
630
            data_len = len(data)
 
631
            while data_len > 0:
 
632
                data_len -= gnutls.record_send(self._c_object,
 
633
                                               data[-data_len:],
 
634
                                               data_len)
 
635
 
 
636
        def bye(self):
 
637
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
 
638
 
 
639
    # Error handling functions
 
640
    def _error_code(result):
 
641
        """A function to raise exceptions on errors, suitable
 
642
        for the 'restype' attribute on ctypes functions"""
 
643
        if result >= 0:
 
644
            return result
 
645
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
 
646
            raise gnutls.CertificateSecurityError(code=result)
 
647
        raise gnutls.Error(code=result)
 
648
 
 
649
    def _retry_on_error(result, func, arguments):
 
650
        """A function to retry on some errors, suitable
 
651
        for the 'errcheck' attribute on ctypes functions"""
 
652
        while result < 0:
 
653
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
 
654
                return _error_code(result)
 
655
            result = func(*arguments)
 
656
        return result
 
657
 
 
658
    # Unless otherwise indicated, the function declarations below are
 
659
    # all from the gnutls/gnutls.h C header file.
 
660
 
 
661
    # Functions
 
662
    priority_set_direct = _library.gnutls_priority_set_direct
 
663
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
 
664
                                    ctypes.POINTER(ctypes.c_char_p)]
 
665
    priority_set_direct.restype = _error_code
 
666
 
 
667
    init = _library.gnutls_init
 
668
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
 
669
    init.restype = _error_code
 
670
 
 
671
    set_default_priority = _library.gnutls_set_default_priority
 
672
    set_default_priority.argtypes = [session_t]
 
673
    set_default_priority.restype = _error_code
 
674
 
 
675
    record_send = _library.gnutls_record_send
 
676
    record_send.argtypes = [session_t, ctypes.c_void_p,
 
677
                            ctypes.c_size_t]
 
678
    record_send.restype = ctypes.c_ssize_t
 
679
    record_send.errcheck = _retry_on_error
 
680
 
 
681
    certificate_allocate_credentials = (
 
682
        _library.gnutls_certificate_allocate_credentials)
 
683
    certificate_allocate_credentials.argtypes = [
 
684
        ctypes.POINTER(certificate_credentials_t)]
 
685
    certificate_allocate_credentials.restype = _error_code
 
686
 
 
687
    certificate_free_credentials = (
 
688
        _library.gnutls_certificate_free_credentials)
 
689
    certificate_free_credentials.argtypes = [
 
690
        certificate_credentials_t]
 
691
    certificate_free_credentials.restype = None
 
692
 
 
693
    handshake_set_private_extensions = (
 
694
        _library.gnutls_handshake_set_private_extensions)
 
695
    handshake_set_private_extensions.argtypes = [session_t,
 
696
                                                 ctypes.c_int]
 
697
    handshake_set_private_extensions.restype = None
 
698
 
 
699
    credentials_set = _library.gnutls_credentials_set
 
700
    credentials_set.argtypes = [session_t, credentials_type_t,
 
701
                                ctypes.c_void_p]
 
702
    credentials_set.restype = _error_code
 
703
 
 
704
    strerror = _library.gnutls_strerror
 
705
    strerror.argtypes = [ctypes.c_int]
 
706
    strerror.restype = ctypes.c_char_p
 
707
 
 
708
    certificate_type_get = _library.gnutls_certificate_type_get
 
709
    certificate_type_get.argtypes = [session_t]
 
710
    certificate_type_get.restype = _error_code
 
711
 
 
712
    certificate_get_peers = _library.gnutls_certificate_get_peers
 
713
    certificate_get_peers.argtypes = [session_t,
 
714
                                      ctypes.POINTER(ctypes.c_uint)]
 
715
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
 
716
 
 
717
    global_set_log_level = _library.gnutls_global_set_log_level
 
718
    global_set_log_level.argtypes = [ctypes.c_int]
 
719
    global_set_log_level.restype = None
 
720
 
 
721
    global_set_log_function = _library.gnutls_global_set_log_function
 
722
    global_set_log_function.argtypes = [log_func]
 
723
    global_set_log_function.restype = None
 
724
 
 
725
    deinit = _library.gnutls_deinit
 
726
    deinit.argtypes = [session_t]
 
727
    deinit.restype = None
 
728
 
 
729
    handshake = _library.gnutls_handshake
 
730
    handshake.argtypes = [session_t]
 
731
    handshake.restype = _error_code
 
732
    handshake.errcheck = _retry_on_error
 
733
 
 
734
    transport_set_ptr = _library.gnutls_transport_set_ptr
 
735
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
 
736
    transport_set_ptr.restype = None
 
737
 
 
738
    bye = _library.gnutls_bye
 
739
    bye.argtypes = [session_t, close_request_t]
 
740
    bye.restype = _error_code
 
741
    bye.errcheck = _retry_on_error
 
742
 
 
743
    check_version = _library.gnutls_check_version
 
744
    check_version.argtypes = [ctypes.c_char_p]
 
745
    check_version.restype = ctypes.c_char_p
 
746
 
 
747
    has_rawpk = bool(check_version(_tls_rawpk_version))
 
748
 
 
749
    if has_rawpk:
 
750
        # Types
 
751
        class pubkey_st(ctypes.Structure):
 
752
            _fields = []
 
753
        pubkey_t = ctypes.POINTER(pubkey_st)
 
754
 
 
755
        x509_crt_fmt_t = ctypes.c_int
 
756
 
 
757
        # All the function declarations below are from gnutls/abstract.h
 
758
        pubkey_init = _library.gnutls_pubkey_init
 
759
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
 
760
        pubkey_init.restype = _error_code
 
761
 
 
762
        pubkey_import = _library.gnutls_pubkey_import
 
763
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
 
764
                                  x509_crt_fmt_t]
 
765
        pubkey_import.restype = _error_code
 
766
 
 
767
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
 
768
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
 
769
                                      ctypes.POINTER(ctypes.c_ubyte),
 
770
                                      ctypes.POINTER(ctypes.c_size_t)]
 
771
        pubkey_get_key_id.restype = _error_code
 
772
 
 
773
        pubkey_deinit = _library.gnutls_pubkey_deinit
 
774
        pubkey_deinit.argtypes = [pubkey_t]
 
775
        pubkey_deinit.restype = None
 
776
    else:
 
777
        # All the function declarations below are from gnutls/openpgp.h
 
778
 
 
779
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
780
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
781
        openpgp_crt_init.restype = _error_code
 
782
 
 
783
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
784
        openpgp_crt_import.argtypes = [openpgp_crt_t,
 
785
                                       ctypes.POINTER(datum_t),
 
786
                                       openpgp_crt_fmt_t]
 
787
        openpgp_crt_import.restype = _error_code
 
788
 
 
789
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
790
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
791
                                            ctypes.POINTER(ctypes.c_uint)]
 
792
        openpgp_crt_verify_self.restype = _error_code
 
793
 
 
794
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
795
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
796
        openpgp_crt_deinit.restype = None
 
797
 
 
798
        openpgp_crt_get_fingerprint = (
 
799
            _library.gnutls_openpgp_crt_get_fingerprint)
 
800
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
801
                                                ctypes.c_void_p,
 
802
                                                ctypes.POINTER(
 
803
                                                    ctypes.c_size_t)]
 
804
        openpgp_crt_get_fingerprint.restype = _error_code
 
805
 
 
806
    if check_version("3.6.4"):
 
807
        certificate_type_get2 = _library.gnutls_certificate_type_get2
 
808
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
 
809
        certificate_type_get2.restype = _error_code
 
810
 
 
811
    # Remove non-public functions
 
812
    del _error_code, _retry_on_error
 
813
# Create the global "gnutls" object, simulating a module
 
814
gnutls = GnuTLS()
 
815
 
 
816
 
 
817
def call_pipe(connection,       # : multiprocessing.Connection
 
818
              func, *args, **kwargs):
 
819
    """This function is meant to be called by multiprocessing.Process
 
820
 
 
821
    This function runs func(*args, **kwargs), and writes the resulting
 
822
    return value on the provided multiprocessing.Connection.
 
823
    """
 
824
    connection.send(func(*args, **kwargs))
 
825
    connection.close()
 
826
 
 
827
 
275
828
class Client(object):
276
829
    """A representation of a client host served by this server.
277
 
    
 
830
 
278
831
    Attributes:
279
 
    _approved:   bool(); 'None' if not yet approved/disapproved
 
832
    approved:   bool(); 'None' if not yet approved/disapproved
280
833
    approval_delay: datetime.timedelta(); Time to wait for approval
281
834
    approval_duration: datetime.timedelta(); Duration of one approval
282
835
    checker:    subprocess.Popen(); a running checker process used
283
836
                                    to see if the client lives.
284
837
                                    'None' if no process is running.
285
 
    checker_callback_tag: a gobject event source tag, or None
 
838
    checker_callback_tag: a GLib event source tag, or None
286
839
    checker_command: string; External command which is run to check
287
840
                     if client lives.  %() expansions are done at
288
841
                     runtime with vars(self) as dict, so that for
289
842
                     instance %(name)s can be used in the command.
290
 
    checker_initiator_tag: a gobject event source tag, or None
 
843
    checker_initiator_tag: a GLib event source tag, or None
291
844
    created:    datetime.datetime(); (UTC) object creation
 
845
    client_structure: Object describing what attributes a client has
 
846
                      and is used for storing the client at exit
292
847
    current_checker_command: string; current running checker_command
293
 
    disable_hook:  If set, called by disable() as disable_hook(self)
294
 
    disable_initiator_tag: a gobject event source tag, or None
 
848
    disable_initiator_tag: a GLib event source tag, or None
295
849
    enabled:    bool()
296
850
    fingerprint: string (40 or 32 hexadecimal digits); used to
297
 
                 uniquely identify the client
 
851
                 uniquely identify an OpenPGP client
 
852
    key_id: string (64 hexadecimal digits); used to uniquely identify
 
853
            a client using raw public keys
298
854
    host:       string; available for use by the checker command
299
855
    interval:   datetime.timedelta(); How often to start a new checker
300
856
    last_approval_request: datetime.datetime(); (UTC) or None
301
857
    last_checked_ok: datetime.datetime(); (UTC) or None
302
 
    last_enabled: datetime.datetime(); (UTC)
 
858
    last_checker_status: integer between 0 and 255 reflecting exit
 
859
                         status of last checker. -1 reflects crashed
 
860
                         checker, -2 means no checker completed yet.
 
861
    last_checker_signal: The signal which killed the last checker, if
 
862
                         last_checker_status is -1
 
863
    last_enabled: datetime.datetime(); (UTC) or None
303
864
    name:       string; from the config file, used in log messages and
304
865
                        D-Bus identifiers
305
866
    secret:     bytestring; sent verbatim (over TLS) to client
306
867
    timeout:    datetime.timedelta(); How long from last_checked_ok
307
868
                                      until this client is disabled
308
 
    extended_timeout:   extra long timeout when password has been sent
 
869
    extended_timeout:   extra long timeout when secret has been sent
309
870
    runtime_expansions: Allowed attributes for runtime expansion.
310
871
    expires:    datetime.datetime(); time (UTC) when a client will be
311
872
                disabled, or None
 
873
    server_settings: The server_settings dict from main()
312
874
    """
313
 
    
 
875
 
314
876
    runtime_expansions = ("approval_delay", "approval_duration",
315
 
                          "created", "enabled", "fingerprint",
316
 
                          "host", "interval", "last_checked_ok",
 
877
                          "created", "enabled", "expires", "key_id",
 
878
                          "fingerprint", "host", "interval",
 
879
                          "last_approval_request", "last_checked_ok",
317
880
                          "last_enabled", "name", "timeout")
318
 
    
319
 
    def timeout_milliseconds(self):
320
 
        "Return the 'timeout' attribute in milliseconds"
321
 
        return _timedelta_to_milliseconds(self.timeout)
322
 
    
323
 
    def extended_timeout_milliseconds(self):
324
 
        "Return the 'extended_timeout' attribute in milliseconds"
325
 
        return _timedelta_to_milliseconds(self.extended_timeout)
326
 
    
327
 
    def interval_milliseconds(self):
328
 
        "Return the 'interval' attribute in milliseconds"
329
 
        return _timedelta_to_milliseconds(self.interval)
330
 
    
331
 
    def approval_delay_milliseconds(self):
332
 
        return _timedelta_to_milliseconds(self.approval_delay)
333
 
    
334
 
    def __init__(self, name = None, disable_hook=None, config=None):
335
 
        """Note: the 'checker' key in 'config' sets the
336
 
        'checker_command' attribute and *not* the 'checker'
337
 
        attribute."""
 
881
    client_defaults = {
 
882
        "timeout": "PT5M",
 
883
        "extended_timeout": "PT15M",
 
884
        "interval": "PT2M",
 
885
        "checker": "fping -q -- %%(host)s",
 
886
        "host": "",
 
887
        "approval_delay": "PT0S",
 
888
        "approval_duration": "PT1S",
 
889
        "approved_by_default": "True",
 
890
        "enabled": "True",
 
891
    }
 
892
 
 
893
    @staticmethod
 
894
    def config_parser(config):
 
895
        """Construct a new dict of client settings of this form:
 
896
        { client_name: {setting_name: value, ...}, ...}
 
897
        with exceptions for any special settings as defined above.
 
898
        NOTE: Must be a pure function. Must return the same result
 
899
        value given the same arguments.
 
900
        """
 
901
        settings = {}
 
902
        for client_name in config.sections():
 
903
            section = dict(config.items(client_name))
 
904
            client = settings[client_name] = {}
 
905
 
 
906
            client["host"] = section["host"]
 
907
            # Reformat values from string types to Python types
 
908
            client["approved_by_default"] = config.getboolean(
 
909
                client_name, "approved_by_default")
 
910
            client["enabled"] = config.getboolean(client_name,
 
911
                                                  "enabled")
 
912
 
 
913
            # Uppercase and remove spaces from key_id and fingerprint
 
914
            # for later comparison purposes with return value from the
 
915
            # key_id() and fingerprint() functions
 
916
            client["key_id"] = (section.get("key_id", "").upper()
 
917
                                .replace(" ", ""))
 
918
            client["fingerprint"] = (section["fingerprint"].upper()
 
919
                                     .replace(" ", ""))
 
920
            if "secret" in section:
 
921
                client["secret"] = codecs.decode(section["secret"]
 
922
                                                 .encode("utf-8"),
 
923
                                                 "base64")
 
924
            elif "secfile" in section:
 
925
                with open(os.path.expanduser(os.path.expandvars
 
926
                                             (section["secfile"])),
 
927
                          "rb") as secfile:
 
928
                    client["secret"] = secfile.read()
 
929
            else:
 
930
                raise TypeError("No secret or secfile for section {}"
 
931
                                .format(section))
 
932
            client["timeout"] = string_to_delta(section["timeout"])
 
933
            client["extended_timeout"] = string_to_delta(
 
934
                section["extended_timeout"])
 
935
            client["interval"] = string_to_delta(section["interval"])
 
936
            client["approval_delay"] = string_to_delta(
 
937
                section["approval_delay"])
 
938
            client["approval_duration"] = string_to_delta(
 
939
                section["approval_duration"])
 
940
            client["checker_command"] = section["checker"]
 
941
            client["last_approval_request"] = None
 
942
            client["last_checked_ok"] = None
 
943
            client["last_checker_status"] = -2
 
944
 
 
945
        return settings
 
946
 
 
947
    def __init__(self, settings, name=None, server_settings=None):
338
948
        self.name = name
339
 
        if config is None:
340
 
            config = {}
 
949
        if server_settings is None:
 
950
            server_settings = {}
 
951
        self.server_settings = server_settings
 
952
        # adding all client settings
 
953
        for setting, value in settings.items():
 
954
            setattr(self, setting, value)
 
955
 
 
956
        if self.enabled:
 
957
            if not hasattr(self, "last_enabled"):
 
958
                self.last_enabled = datetime.datetime.utcnow()
 
959
            if not hasattr(self, "expires"):
 
960
                self.expires = (datetime.datetime.utcnow()
 
961
                                + self.timeout)
 
962
        else:
 
963
            self.last_enabled = None
 
964
            self.expires = None
 
965
 
341
966
        logger.debug("Creating client %r", self.name)
342
 
        # Uppercase and remove spaces from fingerprint for later
343
 
        # comparison purposes with return value from the fingerprint()
344
 
        # function
345
 
        self.fingerprint = (config["fingerprint"].upper()
346
 
                            .replace(" ", ""))
 
967
        logger.debug("  Key ID: %s", self.key_id)
347
968
        logger.debug("  Fingerprint: %s", self.fingerprint)
348
 
        if "secret" in config:
349
 
            self.secret = config["secret"].decode("base64")
350
 
        elif "secfile" in config:
351
 
            with open(os.path.expanduser(os.path.expandvars
352
 
                                         (config["secfile"])),
353
 
                      "rb") as secfile:
354
 
                self.secret = secfile.read()
355
 
        else:
356
 
            raise TypeError("No secret or secfile for client %s"
357
 
                            % self.name)
358
 
        self.host = config.get("host", "")
359
 
        self.created = datetime.datetime.utcnow()
360
 
        self.enabled = False
361
 
        self.last_approval_request = None
362
 
        self.last_enabled = None
363
 
        self.last_checked_ok = None
364
 
        self.timeout = string_to_delta(config["timeout"])
365
 
        self.extended_timeout = string_to_delta(config
366
 
                                                ["extended_timeout"])
367
 
        self.interval = string_to_delta(config["interval"])
368
 
        self.disable_hook = disable_hook
 
969
        self.created = settings.get("created",
 
970
                                    datetime.datetime.utcnow())
 
971
 
 
972
        # attributes specific for this server instance
369
973
        self.checker = None
370
974
        self.checker_initiator_tag = None
371
975
        self.disable_initiator_tag = None
372
 
        self.expires = None
373
976
        self.checker_callback_tag = None
374
 
        self.checker_command = config["checker"]
375
977
        self.current_checker_command = None
376
 
        self.last_connect = None
377
 
        self._approved = None
378
 
        self.approved_by_default = config.get("approved_by_default",
379
 
                                              True)
 
978
        self.approved = None
380
979
        self.approvals_pending = 0
381
 
        self.approval_delay = string_to_delta(
382
 
            config["approval_delay"])
383
 
        self.approval_duration = string_to_delta(
384
 
            config["approval_duration"])
385
 
        self.changedstate = (multiprocessing_manager
386
 
                             .Condition(multiprocessing_manager
387
 
                                        .Lock()))
388
 
    
 
980
        self.changedstate = multiprocessing_manager.Condition(
 
981
            multiprocessing_manager.Lock())
 
982
        self.client_structure = [attr
 
983
                                 for attr in self.__dict__.keys()
 
984
                                 if not attr.startswith("_")]
 
985
        self.client_structure.append("client_structure")
 
986
 
 
987
        for name, t in inspect.getmembers(
 
988
                type(self), lambda obj: isinstance(obj, property)):
 
989
            if not name.startswith("_"):
 
990
                self.client_structure.append(name)
 
991
 
 
992
    # Send notice to process children that client state has changed
389
993
    def send_changedstate(self):
390
 
        self.changedstate.acquire()
391
 
        self.changedstate.notify_all()
392
 
        self.changedstate.release()
393
 
    
 
994
        with self.changedstate:
 
995
            self.changedstate.notify_all()
 
996
 
394
997
    def enable(self):
395
998
        """Start this client's checker and timeout hooks"""
396
999
        if getattr(self, "enabled", False):
397
1000
            # Already enabled
398
1001
            return
399
 
        self.send_changedstate()
400
 
        # Schedule a new checker to be started an 'interval' from now,
401
 
        # and every interval from then on.
402
 
        self.checker_initiator_tag = (gobject.timeout_add
403
 
                                      (self.interval_milliseconds(),
404
 
                                       self.start_checker))
405
 
        # Schedule a disable() when 'timeout' has passed
406
1002
        self.expires = datetime.datetime.utcnow() + self.timeout
407
 
        self.disable_initiator_tag = (gobject.timeout_add
408
 
                                   (self.timeout_milliseconds(),
409
 
                                    self.disable))
410
1003
        self.enabled = True
411
1004
        self.last_enabled = datetime.datetime.utcnow()
412
 
        # Also start a new checker *right now*.
413
 
        self.start_checker()
414
 
    
 
1005
        self.init_checker()
 
1006
        self.send_changedstate()
 
1007
 
415
1008
    def disable(self, quiet=True):
416
1009
        """Disable this client."""
417
1010
        if not getattr(self, "enabled", False):
418
1011
            return False
419
1012
        if not quiet:
420
 
            self.send_changedstate()
421
 
        if not quiet:
422
1013
            logger.info("Disabling client %s", self.name)
423
 
        if getattr(self, "disable_initiator_tag", False):
424
 
            gobject.source_remove(self.disable_initiator_tag)
 
1014
        if getattr(self, "disable_initiator_tag", None) is not None:
 
1015
            GLib.source_remove(self.disable_initiator_tag)
425
1016
            self.disable_initiator_tag = None
426
1017
        self.expires = None
427
 
        if getattr(self, "checker_initiator_tag", False):
428
 
            gobject.source_remove(self.checker_initiator_tag)
 
1018
        if getattr(self, "checker_initiator_tag", None) is not None:
 
1019
            GLib.source_remove(self.checker_initiator_tag)
429
1020
            self.checker_initiator_tag = None
430
1021
        self.stop_checker()
431
 
        if self.disable_hook:
432
 
            self.disable_hook(self)
433
1022
        self.enabled = False
434
 
        # Do not run this again if called by a gobject.timeout_add
 
1023
        if not quiet:
 
1024
            self.send_changedstate()
 
1025
        # Do not run this again if called by a GLib.timeout_add
435
1026
        return False
436
 
    
 
1027
 
437
1028
    def __del__(self):
438
 
        self.disable_hook = None
439
1029
        self.disable()
440
 
    
441
 
    def checker_callback(self, pid, condition, command):
 
1030
 
 
1031
    def init_checker(self):
 
1032
        # Schedule a new checker to be started an 'interval' from now,
 
1033
        # and every interval from then on.
 
1034
        if self.checker_initiator_tag is not None:
 
1035
            GLib.source_remove(self.checker_initiator_tag)
 
1036
        self.checker_initiator_tag = GLib.timeout_add(
 
1037
            int(self.interval.total_seconds() * 1000),
 
1038
            self.start_checker)
 
1039
        # Schedule a disable() when 'timeout' has passed
 
1040
        if self.disable_initiator_tag is not None:
 
1041
            GLib.source_remove(self.disable_initiator_tag)
 
1042
        self.disable_initiator_tag = GLib.timeout_add(
 
1043
            int(self.timeout.total_seconds() * 1000), self.disable)
 
1044
        # Also start a new checker *right now*.
 
1045
        self.start_checker()
 
1046
 
 
1047
    def checker_callback(self, source, condition, connection,
 
1048
                         command):
442
1049
        """The checker has completed, so take appropriate actions."""
443
1050
        self.checker_callback_tag = None
444
1051
        self.checker = None
445
 
        if os.WIFEXITED(condition):
446
 
            exitstatus = os.WEXITSTATUS(condition)
447
 
            if exitstatus == 0:
 
1052
        # Read return code from connection (see call_pipe)
 
1053
        returncode = connection.recv()
 
1054
        connection.close()
 
1055
 
 
1056
        if returncode >= 0:
 
1057
            self.last_checker_status = returncode
 
1058
            self.last_checker_signal = None
 
1059
            if self.last_checker_status == 0:
448
1060
                logger.info("Checker for %(name)s succeeded",
449
1061
                            vars(self))
450
1062
                self.checked_ok()
451
1063
            else:
452
 
                logger.info("Checker for %(name)s failed",
453
 
                            vars(self))
 
1064
                logger.info("Checker for %(name)s failed", vars(self))
454
1065
        else:
 
1066
            self.last_checker_status = -1
 
1067
            self.last_checker_signal = -returncode
455
1068
            logger.warning("Checker for %(name)s crashed?",
456
1069
                           vars(self))
457
 
    
458
 
    def checked_ok(self, timeout=None):
459
 
        """Bump up the timeout for this client.
460
 
        
461
 
        This should only be called when the client has been seen,
462
 
        alive and well.
463
 
        """
 
1070
        return False
 
1071
 
 
1072
    def checked_ok(self):
 
1073
        """Assert that the client has been seen, alive and well."""
 
1074
        self.last_checked_ok = datetime.datetime.utcnow()
 
1075
        self.last_checker_status = 0
 
1076
        self.last_checker_signal = None
 
1077
        self.bump_timeout()
 
1078
 
 
1079
    def bump_timeout(self, timeout=None):
 
1080
        """Bump up the timeout for this client."""
464
1081
        if timeout is None:
465
1082
            timeout = self.timeout
466
 
        self.last_checked_ok = datetime.datetime.utcnow()
467
1083
        if self.disable_initiator_tag is not None:
468
 
            gobject.source_remove(self.disable_initiator_tag)
 
1084
            GLib.source_remove(self.disable_initiator_tag)
 
1085
            self.disable_initiator_tag = None
469
1086
        if getattr(self, "enabled", False):
470
 
            self.disable_initiator_tag = (gobject.timeout_add
471
 
                                          (_timedelta_to_milliseconds
472
 
                                           (timeout), self.disable))
 
1087
            self.disable_initiator_tag = GLib.timeout_add(
 
1088
                int(timeout.total_seconds() * 1000), self.disable)
473
1089
            self.expires = datetime.datetime.utcnow() + timeout
474
 
    
 
1090
 
475
1091
    def need_approval(self):
476
1092
        self.last_approval_request = datetime.datetime.utcnow()
477
 
    
 
1093
 
478
1094
    def start_checker(self):
479
1095
        """Start a new checker subprocess if one is not running.
480
 
        
 
1096
 
481
1097
        If a checker already exists, leave it running and do
482
1098
        nothing."""
483
1099
        # The reason for not killing a running checker is that if we
484
 
        # did that, then if a checker (for some reason) started
485
 
        # running slowly and taking more than 'interval' time, the
486
 
        # client would inevitably timeout, since no checker would get
487
 
        # a chance to run to completion.  If we instead leave running
 
1100
        # did that, and if a checker (for some reason) started running
 
1101
        # slowly and taking more than 'interval' time, then the client
 
1102
        # would inevitably timeout, since no checker would get a
 
1103
        # chance to run to completion.  If we instead leave running
488
1104
        # checkers alone, the checker would have to take more time
489
1105
        # than 'timeout' for the client to be disabled, which is as it
490
1106
        # should be.
491
 
        
492
 
        # If a checker exists, make sure it is not a zombie
493
 
        try:
494
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
 
        except (AttributeError, OSError) as error:
496
 
            if (isinstance(error, OSError)
497
 
                and error.errno != errno.ECHILD):
498
 
                raise error
499
 
        else:
500
 
            if pid:
501
 
                logger.warning("Checker was a zombie")
502
 
                gobject.source_remove(self.checker_callback_tag)
503
 
                self.checker_callback(pid, status,
504
 
                                      self.current_checker_command)
 
1107
 
 
1108
        if self.checker is not None and not self.checker.is_alive():
 
1109
            logger.warning("Checker was not alive; joining")
 
1110
            self.checker.join()
 
1111
            self.checker = None
505
1112
        # Start a new checker if needed
506
1113
        if self.checker is None:
 
1114
            # Escape attributes for the shell
 
1115
            escaped_attrs = {
 
1116
                attr: re.escape(str(getattr(self, attr)))
 
1117
                for attr in self.runtime_expansions}
507
1118
            try:
508
 
                # In case checker_command has exactly one % operator
509
 
                command = self.checker_command % self.host
510
 
            except TypeError:
511
 
                # Escape attributes for the shell
512
 
                escaped_attrs = dict(
513
 
                    (attr,
514
 
                     re.escape(unicode(str(getattr(self, attr, "")),
515
 
                                       errors=
516
 
                                       'replace')))
517
 
                    for attr in
518
 
                    self.runtime_expansions)
519
 
                
520
 
                try:
521
 
                    command = self.checker_command % escaped_attrs
522
 
                except TypeError as error:
523
 
                    logger.error('Could not format string "%s":'
524
 
                                 ' %s', self.checker_command, error)
525
 
                    return True # Try again later
 
1119
                command = self.checker_command % escaped_attrs
 
1120
            except TypeError as error:
 
1121
                logger.error('Could not format string "%s"',
 
1122
                             self.checker_command,
 
1123
                             exc_info=error)
 
1124
                return True     # Try again later
526
1125
            self.current_checker_command = command
527
 
            try:
528
 
                logger.info("Starting checker %r for %s",
529
 
                            command, self.name)
530
 
                # We don't need to redirect stdout and stderr, since
531
 
                # in normal mode, that is already done by daemon(),
532
 
                # and in debug mode we don't want to.  (Stdin is
533
 
                # always replaced by /dev/null.)
534
 
                self.checker = subprocess.Popen(command,
535
 
                                                close_fds=True,
536
 
                                                shell=True, cwd="/")
537
 
                self.checker_callback_tag = (gobject.child_watch_add
538
 
                                             (self.checker.pid,
539
 
                                              self.checker_callback,
540
 
                                              data=command))
541
 
                # The checker may have completed before the gobject
542
 
                # watch was added.  Check for this.
543
 
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
544
 
                if pid:
545
 
                    gobject.source_remove(self.checker_callback_tag)
546
 
                    self.checker_callback(pid, status, command)
547
 
            except OSError as error:
548
 
                logger.error("Failed to start subprocess: %s",
549
 
                             error)
550
 
        # Re-run this periodically if run by gobject.timeout_add
 
1126
            logger.info("Starting checker %r for %s", command,
 
1127
                        self.name)
 
1128
            # We don't need to redirect stdout and stderr, since
 
1129
            # in normal mode, that is already done by daemon(),
 
1130
            # and in debug mode we don't want to.  (Stdin is
 
1131
            # always replaced by /dev/null.)
 
1132
            # The exception is when not debugging but nevertheless
 
1133
            # running in the foreground; use the previously
 
1134
            # created wnull.
 
1135
            popen_args = {"close_fds": True,
 
1136
                          "shell": True,
 
1137
                          "cwd": "/"}
 
1138
            if (not self.server_settings["debug"]
 
1139
                and self.server_settings["foreground"]):
 
1140
                popen_args.update({"stdout": wnull,
 
1141
                                   "stderr": wnull})
 
1142
            pipe = multiprocessing.Pipe(duplex=False)
 
1143
            self.checker = multiprocessing.Process(
 
1144
                target=call_pipe,
 
1145
                args=(pipe[1], subprocess.call, command),
 
1146
                kwargs=popen_args)
 
1147
            self.checker.start()
 
1148
            self.checker_callback_tag = GLib.io_add_watch(
 
1149
                pipe[0].fileno(), GLib.IO_IN,
 
1150
                self.checker_callback, pipe[0], command)
 
1151
        # Re-run this periodically if run by GLib.timeout_add
551
1152
        return True
552
 
    
 
1153
 
553
1154
    def stop_checker(self):
554
1155
        """Force the checker process, if any, to stop."""
555
1156
        if self.checker_callback_tag:
556
 
            gobject.source_remove(self.checker_callback_tag)
 
1157
            GLib.source_remove(self.checker_callback_tag)
557
1158
            self.checker_callback_tag = None
558
1159
        if getattr(self, "checker", None) is None:
559
1160
            return
560
1161
        logger.debug("Stopping checker for %(name)s", vars(self))
561
 
        try:
562
 
            os.kill(self.checker.pid, signal.SIGTERM)
563
 
            #time.sleep(0.5)
564
 
            #if self.checker.poll() is None:
565
 
            #    os.kill(self.checker.pid, signal.SIGKILL)
566
 
        except OSError as error:
567
 
            if error.errno != errno.ESRCH: # No such process
568
 
                raise
 
1162
        self.checker.terminate()
569
1163
        self.checker = None
570
1164
 
571
1165
 
572
 
def dbus_service_property(dbus_interface, signature="v",
573
 
                          access="readwrite", byte_arrays=False):
 
1166
def dbus_service_property(dbus_interface,
 
1167
                          signature="v",
 
1168
                          access="readwrite",
 
1169
                          byte_arrays=False):
574
1170
    """Decorators for marking methods of a DBusObjectWithProperties to
575
1171
    become properties on the D-Bus.
576
 
    
 
1172
 
577
1173
    The decorated method will be called with no arguments by "Get"
578
1174
    and with one argument by "Set".
579
 
    
 
1175
 
580
1176
    The parameters, where they are supported, are the same as
581
1177
    dbus.service.method, except there is only "signature", since the
582
1178
    type from Get() and the type sent to Set() is the same.
585
1181
    # "Set" method, so we fail early here:
586
1182
    if byte_arrays and signature != "ay":
587
1183
        raise ValueError("Byte arrays not supported for non-'ay'"
588
 
                         " signature %r" % signature)
 
1184
                         " signature {!r}".format(signature))
 
1185
 
589
1186
    def decorator(func):
590
1187
        func._dbus_is_property = True
591
1188
        func._dbus_interface = dbus_interface
594
1191
        func._dbus_name = func.__name__
595
1192
        if func._dbus_name.endswith("_dbus_property"):
596
1193
            func._dbus_name = func._dbus_name[:-14]
597
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
598
 
        return func
 
1194
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
 
1195
        return func
 
1196
 
 
1197
    return decorator
 
1198
 
 
1199
 
 
1200
def dbus_interface_annotations(dbus_interface):
 
1201
    """Decorator for marking functions returning interface annotations
 
1202
 
 
1203
    Usage:
 
1204
 
 
1205
    @dbus_interface_annotations("org.example.Interface")
 
1206
    def _foo(self):  # Function name does not matter
 
1207
        return {"org.freedesktop.DBus.Deprecated": "true",
 
1208
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
 
1209
                    "false"}
 
1210
    """
 
1211
 
 
1212
    def decorator(func):
 
1213
        func._dbus_is_interface = True
 
1214
        func._dbus_interface = dbus_interface
 
1215
        func._dbus_name = dbus_interface
 
1216
        return func
 
1217
 
 
1218
    return decorator
 
1219
 
 
1220
 
 
1221
def dbus_annotations(annotations):
 
1222
    """Decorator to annotate D-Bus methods, signals or properties
 
1223
    Usage:
 
1224
 
 
1225
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
 
1226
                       "org.freedesktop.DBus.Property."
 
1227
                       "EmitsChangedSignal": "false"})
 
1228
    @dbus_service_property("org.example.Interface", signature="b",
 
1229
                           access="r")
 
1230
    def Property_dbus_property(self):
 
1231
        return dbus.Boolean(False)
 
1232
 
 
1233
    See also the DBusObjectWithAnnotations class.
 
1234
    """
 
1235
 
 
1236
    def decorator(func):
 
1237
        func._dbus_annotations = annotations
 
1238
        return func
 
1239
 
599
1240
    return decorator
600
1241
 
601
1242
 
602
1243
class DBusPropertyException(dbus.exceptions.DBusException):
603
1244
    """A base class for D-Bus property-related exceptions
604
1245
    """
605
 
    def __unicode__(self):
606
 
        return unicode(str(self))
 
1246
    pass
607
1247
 
608
1248
 
609
1249
class DBusPropertyAccessException(DBusPropertyException):
618
1258
    pass
619
1259
 
620
1260
 
621
 
class DBusObjectWithProperties(dbus.service.Object):
 
1261
class DBusObjectWithAnnotations(dbus.service.Object):
 
1262
    """A D-Bus object with annotations.
 
1263
 
 
1264
    Classes inheriting from this can use the dbus_annotations
 
1265
    decorator to add annotations to methods or signals.
 
1266
    """
 
1267
 
 
1268
    @staticmethod
 
1269
    def _is_dbus_thing(thing):
 
1270
        """Returns a function testing if an attribute is a D-Bus thing
 
1271
 
 
1272
        If called like _is_dbus_thing("method") it returns a function
 
1273
        suitable for use as predicate to inspect.getmembers().
 
1274
        """
 
1275
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
 
1276
                                   False)
 
1277
 
 
1278
    def _get_all_dbus_things(self, thing):
 
1279
        """Returns a generator of (name, attribute) pairs
 
1280
        """
 
1281
        return ((getattr(athing.__get__(self), "_dbus_name", name),
 
1282
                 athing.__get__(self))
 
1283
                for cls in self.__class__.__mro__
 
1284
                for name, athing in
 
1285
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
 
1286
 
 
1287
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1288
                         out_signature="s",
 
1289
                         path_keyword='object_path',
 
1290
                         connection_keyword='connection')
 
1291
    def Introspect(self, object_path, connection):
 
1292
        """Overloading of standard D-Bus method.
 
1293
 
 
1294
        Inserts annotation tags on methods and signals.
 
1295
        """
 
1296
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
1297
                                                   connection)
 
1298
        try:
 
1299
            document = xml.dom.minidom.parseString(xmlstring)
 
1300
 
 
1301
            for if_tag in document.getElementsByTagName("interface"):
 
1302
                # Add annotation tags
 
1303
                for typ in ("method", "signal"):
 
1304
                    for tag in if_tag.getElementsByTagName(typ):
 
1305
                        annots = dict()
 
1306
                        for name, prop in (self.
 
1307
                                           _get_all_dbus_things(typ)):
 
1308
                            if (name == tag.getAttribute("name")
 
1309
                                and prop._dbus_interface
 
1310
                                == if_tag.getAttribute("name")):
 
1311
                                annots.update(getattr(
 
1312
                                    prop, "_dbus_annotations", {}))
 
1313
                        for name, value in annots.items():
 
1314
                            ann_tag = document.createElement(
 
1315
                                "annotation")
 
1316
                            ann_tag.setAttribute("name", name)
 
1317
                            ann_tag.setAttribute("value", value)
 
1318
                            tag.appendChild(ann_tag)
 
1319
                # Add interface annotation tags
 
1320
                for annotation, value in dict(
 
1321
                    itertools.chain.from_iterable(
 
1322
                        annotations().items()
 
1323
                        for name, annotations
 
1324
                        in self._get_all_dbus_things("interface")
 
1325
                        if name == if_tag.getAttribute("name")
 
1326
                        )).items():
 
1327
                    ann_tag = document.createElement("annotation")
 
1328
                    ann_tag.setAttribute("name", annotation)
 
1329
                    ann_tag.setAttribute("value", value)
 
1330
                    if_tag.appendChild(ann_tag)
 
1331
                # Fix argument name for the Introspect method itself
 
1332
                if (if_tag.getAttribute("name")
 
1333
                    == dbus.INTROSPECTABLE_IFACE):
 
1334
                    for cn in if_tag.getElementsByTagName("method"):
 
1335
                        if cn.getAttribute("name") == "Introspect":
 
1336
                            for arg in cn.getElementsByTagName("arg"):
 
1337
                                if (arg.getAttribute("direction")
 
1338
                                    == "out"):
 
1339
                                    arg.setAttribute("name",
 
1340
                                                     "xml_data")
 
1341
            xmlstring = document.toxml("utf-8")
 
1342
            document.unlink()
 
1343
        except (AttributeError, xml.dom.DOMException,
 
1344
                xml.parsers.expat.ExpatError) as error:
 
1345
            logger.error("Failed to override Introspection method",
 
1346
                         exc_info=error)
 
1347
        return xmlstring
 
1348
 
 
1349
 
 
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
622
1351
    """A D-Bus object with properties.
623
 
    
 
1352
 
624
1353
    Classes inheriting from this can use the dbus_service_property
625
1354
    decorator to expose methods as D-Bus properties.  It exposes the
626
1355
    standard Get(), Set(), and GetAll() methods on the D-Bus.
627
1356
    """
628
 
    
629
 
    @staticmethod
630
 
    def _is_dbus_property(obj):
631
 
        return getattr(obj, "_dbus_is_property", False)
632
 
    
633
 
    def _get_all_dbus_properties(self):
634
 
        """Returns a generator of (name, attribute) pairs
635
 
        """
636
 
        return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
 
                for cls in self.__class__.__mro__
638
 
                for name, prop in
639
 
                inspect.getmembers(cls, self._is_dbus_property))
640
 
    
 
1357
 
641
1358
    def _get_dbus_property(self, interface_name, property_name):
642
1359
        """Returns a bound method if one exists which is a D-Bus
643
1360
        property with the specified name and interface.
644
1361
        """
645
 
        for cls in  self.__class__.__mro__:
646
 
            for name, value in (inspect.getmembers
647
 
                                (cls, self._is_dbus_property)):
 
1362
        for cls in self.__class__.__mro__:
 
1363
            for name, value in inspect.getmembers(
 
1364
                    cls, self._is_dbus_thing("property")):
648
1365
                if (value._dbus_name == property_name
649
1366
                    and value._dbus_interface == interface_name):
650
1367
                    return value.__get__(self)
651
 
        
 
1368
 
652
1369
        # No such property
653
 
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
 
                                   + interface_name + "."
655
 
                                   + property_name)
656
 
    
657
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
 
1370
        raise DBusPropertyNotFound("{}:{}.{}".format(
 
1371
            self.dbus_object_path, interface_name, property_name))
 
1372
 
 
1373
    @classmethod
 
1374
    def _get_all_interface_names(cls):
 
1375
        """Get a sequence of all interfaces supported by an object"""
 
1376
        return (name for name in set(getattr(getattr(x, attr),
 
1377
                                             "_dbus_interface", None)
 
1378
                                     for x in (inspect.getmro(cls))
 
1379
                                     for attr in dir(x))
 
1380
                if name is not None)
 
1381
 
 
1382
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1383
                         in_signature="ss",
658
1384
                         out_signature="v")
659
1385
    def Get(self, interface_name, property_name):
660
1386
        """Standard D-Bus property Get() method, see D-Bus standard.
666
1392
        if not hasattr(value, "variant_level"):
667
1393
            return value
668
1394
        return type(value)(value, variant_level=value.variant_level+1)
669
 
    
 
1395
 
670
1396
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
671
1397
    def Set(self, interface_name, property_name, value):
672
1398
        """Standard D-Bus property Set() method, see D-Bus standard.
678
1404
            # The byte_arrays option is not supported yet on
679
1405
            # signatures other than "ay".
680
1406
            if prop._dbus_signature != "ay":
681
 
                raise ValueError
682
 
            value = dbus.ByteArray(''.join(unichr(byte)
683
 
                                           for byte in value))
 
1407
                raise ValueError("Byte arrays not supported for non-"
 
1408
                                 "'ay' signature {!r}"
 
1409
                                 .format(prop._dbus_signature))
 
1410
            value = dbus.ByteArray(b''.join(chr(byte)
 
1411
                                            for byte in value))
684
1412
        prop(value)
685
 
    
686
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
 
1413
 
 
1414
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1415
                         in_signature="s",
687
1416
                         out_signature="a{sv}")
688
1417
    def GetAll(self, interface_name):
689
1418
        """Standard D-Bus property GetAll() method, see D-Bus
690
1419
        standard.
691
 
        
 
1420
 
692
1421
        Note: Will not include properties with access="write".
693
1422
        """
694
 
        all = {}
695
 
        for name, prop in self._get_all_dbus_properties():
 
1423
        properties = {}
 
1424
        for name, prop in self._get_all_dbus_things("property"):
696
1425
            if (interface_name
697
1426
                and interface_name != prop._dbus_interface):
698
1427
                # Interface non-empty but did not match
702
1431
                continue
703
1432
            value = prop()
704
1433
            if not hasattr(value, "variant_level"):
705
 
                all[name] = value
 
1434
                properties[name] = value
706
1435
                continue
707
 
            all[name] = type(value)(value, variant_level=
708
 
                                    value.variant_level+1)
709
 
        return dbus.Dictionary(all, signature="sv")
710
 
    
 
1436
            properties[name] = type(value)(
 
1437
                value, variant_level=value.variant_level + 1)
 
1438
        return dbus.Dictionary(properties, signature="sv")
 
1439
 
 
1440
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
 
1441
    def PropertiesChanged(self, interface_name, changed_properties,
 
1442
                          invalidated_properties):
 
1443
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
 
1444
        standard.
 
1445
        """
 
1446
        pass
 
1447
 
711
1448
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
712
1449
                         out_signature="s",
713
1450
                         path_keyword='object_path',
714
1451
                         connection_keyword='connection')
715
1452
    def Introspect(self, object_path, connection):
716
 
        """Standard D-Bus method, overloaded to insert property tags.
 
1453
        """Overloading of standard D-Bus method.
 
1454
 
 
1455
        Inserts property tags and interface annotation tags.
717
1456
        """
718
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
719
 
                                                   connection)
 
1457
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1458
                                                         object_path,
 
1459
                                                         connection)
720
1460
        try:
721
1461
            document = xml.dom.minidom.parseString(xmlstring)
 
1462
 
722
1463
            def make_tag(document, name, prop):
723
1464
                e = document.createElement("property")
724
1465
                e.setAttribute("name", name)
725
1466
                e.setAttribute("type", prop._dbus_signature)
726
1467
                e.setAttribute("access", prop._dbus_access)
727
1468
                return e
 
1469
 
728
1470
            for if_tag in document.getElementsByTagName("interface"):
 
1471
                # Add property tags
729
1472
                for tag in (make_tag(document, name, prop)
730
1473
                            for name, prop
731
 
                            in self._get_all_dbus_properties()
 
1474
                            in self._get_all_dbus_things("property")
732
1475
                            if prop._dbus_interface
733
1476
                            == if_tag.getAttribute("name")):
734
1477
                    if_tag.appendChild(tag)
 
1478
                # Add annotation tags for properties
 
1479
                for tag in if_tag.getElementsByTagName("property"):
 
1480
                    annots = dict()
 
1481
                    for name, prop in self._get_all_dbus_things(
 
1482
                            "property"):
 
1483
                        if (name == tag.getAttribute("name")
 
1484
                            and prop._dbus_interface
 
1485
                            == if_tag.getAttribute("name")):
 
1486
                            annots.update(getattr(
 
1487
                                prop, "_dbus_annotations", {}))
 
1488
                    for name, value in annots.items():
 
1489
                        ann_tag = document.createElement(
 
1490
                            "annotation")
 
1491
                        ann_tag.setAttribute("name", name)
 
1492
                        ann_tag.setAttribute("value", value)
 
1493
                        tag.appendChild(ann_tag)
735
1494
                # Add the names to the return values for the
736
1495
                # "org.freedesktop.DBus.Properties" methods
737
1496
                if (if_tag.getAttribute("name")
752
1511
        except (AttributeError, xml.dom.DOMException,
753
1512
                xml.parsers.expat.ExpatError) as error:
754
1513
            logger.error("Failed to override Introspection method",
755
 
                         error)
756
 
        return xmlstring
757
 
 
758
 
 
759
 
def datetime_to_dbus (dt, variant_level=0):
 
1514
                         exc_info=error)
 
1515
        return xmlstring
 
1516
 
 
1517
 
 
1518
try:
 
1519
    dbus.OBJECT_MANAGER_IFACE
 
1520
except AttributeError:
 
1521
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
1522
 
 
1523
 
 
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
 
1525
    """A D-Bus object with an ObjectManager.
 
1526
 
 
1527
    Classes inheriting from this exposes the standard
 
1528
    GetManagedObjects call and the InterfacesAdded and
 
1529
    InterfacesRemoved signals on the standard
 
1530
    "org.freedesktop.DBus.ObjectManager" interface.
 
1531
 
 
1532
    Note: No signals are sent automatically; they must be sent
 
1533
    manually.
 
1534
    """
 
1535
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
1536
                         out_signature="a{oa{sa{sv}}}")
 
1537
    def GetManagedObjects(self):
 
1538
        """This function must be overridden"""
 
1539
        raise NotImplementedError()
 
1540
 
 
1541
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
 
1542
                         signature="oa{sa{sv}}")
 
1543
    def InterfacesAdded(self, object_path, interfaces_and_properties):
 
1544
        pass
 
1545
 
 
1546
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
 
1547
    def InterfacesRemoved(self, object_path, interfaces):
 
1548
        pass
 
1549
 
 
1550
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1551
                         out_signature="s",
 
1552
                         path_keyword='object_path',
 
1553
                         connection_keyword='connection')
 
1554
    def Introspect(self, object_path, connection):
 
1555
        """Overloading of standard D-Bus method.
 
1556
 
 
1557
        Override return argument name of GetManagedObjects to be
 
1558
        "objpath_interfaces_and_properties"
 
1559
        """
 
1560
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1561
                                                         object_path,
 
1562
                                                         connection)
 
1563
        try:
 
1564
            document = xml.dom.minidom.parseString(xmlstring)
 
1565
 
 
1566
            for if_tag in document.getElementsByTagName("interface"):
 
1567
                # Fix argument name for the GetManagedObjects method
 
1568
                if (if_tag.getAttribute("name")
 
1569
                    == dbus.OBJECT_MANAGER_IFACE):
 
1570
                    for cn in if_tag.getElementsByTagName("method"):
 
1571
                        if (cn.getAttribute("name")
 
1572
                            == "GetManagedObjects"):
 
1573
                            for arg in cn.getElementsByTagName("arg"):
 
1574
                                if (arg.getAttribute("direction")
 
1575
                                    == "out"):
 
1576
                                    arg.setAttribute(
 
1577
                                        "name",
 
1578
                                        "objpath_interfaces"
 
1579
                                        "_and_properties")
 
1580
            xmlstring = document.toxml("utf-8")
 
1581
            document.unlink()
 
1582
        except (AttributeError, xml.dom.DOMException,
 
1583
                xml.parsers.expat.ExpatError) as error:
 
1584
            logger.error("Failed to override Introspection method",
 
1585
                         exc_info=error)
 
1586
        return xmlstring
 
1587
 
 
1588
 
 
1589
def datetime_to_dbus(dt, variant_level=0):
760
1590
    """Convert a UTC datetime.datetime() to a D-Bus type."""
761
1591
    if dt is None:
762
 
        return dbus.String("", variant_level = variant_level)
763
 
    return dbus.String(dt.isoformat(),
764
 
                       variant_level=variant_level)
765
 
 
766
 
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
 
                                  .__metaclass__):
768
 
    """Applied to an empty subclass of a D-Bus object, this metaclass
769
 
    will add additional D-Bus attributes matching a certain pattern.
 
1592
        return dbus.String("", variant_level=variant_level)
 
1593
    return dbus.String(dt.isoformat(), variant_level=variant_level)
 
1594
 
 
1595
 
 
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
 
1597
    """A class decorator; applied to a subclass of
 
1598
    dbus.service.Object, it will add alternate D-Bus attributes with
 
1599
    interface names according to the "alt_interface_names" mapping.
 
1600
    Usage:
 
1601
 
 
1602
    @alternate_dbus_interfaces({"org.example.Interface":
 
1603
                                    "net.example.AlternateInterface"})
 
1604
    class SampleDBusObject(dbus.service.Object):
 
1605
        @dbus.service.method("org.example.Interface")
 
1606
        def SampleDBusMethod():
 
1607
            pass
 
1608
 
 
1609
    The above "SampleDBusMethod" on "SampleDBusObject" will be
 
1610
    reachable via two interfaces: "org.example.Interface" and
 
1611
    "net.example.AlternateInterface", the latter of which will have
 
1612
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
 
1613
    "true", unless "deprecate" is passed with a False value.
 
1614
 
 
1615
    This works for methods and signals, and also for D-Bus properties
 
1616
    (from DBusObjectWithProperties) and interfaces (from the
 
1617
    dbus_interface_annotations decorator).
770
1618
    """
771
 
    def __new__(mcs, name, bases, attr):
772
 
        # Go through all the base classes which could have D-Bus
773
 
        # methods, signals, or properties in them
774
 
        for base in (b for b in bases
775
 
                     if issubclass(b, dbus.service.Object)):
776
 
            # Go though all attributes of the base class
777
 
            for attrname, attribute in inspect.getmembers(base):
 
1619
 
 
1620
    def wrapper(cls):
 
1621
        for orig_interface_name, alt_interface_name in (
 
1622
                alt_interface_names.items()):
 
1623
            attr = {}
 
1624
            interface_names = set()
 
1625
            # Go though all attributes of the class
 
1626
            for attrname, attribute in inspect.getmembers(cls):
778
1627
                # Ignore non-D-Bus attributes, and D-Bus attributes
779
1628
                # with the wrong interface name
780
1629
                if (not hasattr(attribute, "_dbus_interface")
781
 
                    or not attribute._dbus_interface
782
 
                    .startswith("se.recompile.Mandos")):
 
1630
                    or not attribute._dbus_interface.startswith(
 
1631
                        orig_interface_name)):
783
1632
                    continue
784
1633
                # Create an alternate D-Bus interface name based on
785
1634
                # the current name
786
 
                alt_interface = (attribute._dbus_interface
787
 
                                 .replace("se.recompile.Mandos",
788
 
                                          "se.bsnet.fukt.Mandos"))
 
1635
                alt_interface = attribute._dbus_interface.replace(
 
1636
                    orig_interface_name, alt_interface_name)
 
1637
                interface_names.add(alt_interface)
789
1638
                # Is this a D-Bus signal?
790
1639
                if getattr(attribute, "_dbus_is_signal", False):
791
 
                    # Extract the original non-method function by
792
 
                    # black magic
793
 
                    nonmethod_func = (dict(
 
1640
                    # Extract the original non-method undecorated
 
1641
                    # function by black magic
 
1642
                    if sys.version_info.major == 2:
 
1643
                        nonmethod_func = (dict(
794
1644
                            zip(attribute.func_code.co_freevars,
795
 
                                attribute.__closure__))["func"]
796
 
                                      .cell_contents)
 
1645
                                attribute.__closure__))
 
1646
                                          ["func"].cell_contents)
 
1647
                    else:
 
1648
                        nonmethod_func = (dict(
 
1649
                            zip(attribute.__code__.co_freevars,
 
1650
                                attribute.__closure__))
 
1651
                                          ["func"].cell_contents)
797
1652
                    # Create a new, but exactly alike, function
798
1653
                    # object, and decorate it to be a new D-Bus signal
799
1654
                    # with the alternate D-Bus interface name
800
 
                    new_function = (dbus.service.signal
801
 
                                    (alt_interface,
802
 
                                     attribute._dbus_signature)
803
 
                                    (types.FunctionType(
804
 
                                nonmethod_func.func_code,
805
 
                                nonmethod_func.func_globals,
806
 
                                nonmethod_func.func_name,
807
 
                                nonmethod_func.func_defaults,
808
 
                                nonmethod_func.func_closure)))
 
1655
                    new_function = copy_function(nonmethod_func)
 
1656
                    new_function = (dbus.service.signal(
 
1657
                        alt_interface,
 
1658
                        attribute._dbus_signature)(new_function))
 
1659
                    # Copy annotations, if any
 
1660
                    try:
 
1661
                        new_function._dbus_annotations = dict(
 
1662
                            attribute._dbus_annotations)
 
1663
                    except AttributeError:
 
1664
                        pass
 
1665
 
809
1666
                    # Define a creator of a function to call both the
810
 
                    # old and new functions, so both the old and new
811
 
                    # signals gets sent when the function is called
 
1667
                    # original and alternate functions, so both the
 
1668
                    # original and alternate signals gets sent when
 
1669
                    # the function is called
812
1670
                    def fixscope(func1, func2):
813
1671
                        """This function is a scope container to pass
814
1672
                        func1 and func2 to the "call_both" function
815
1673
                        outside of its arguments"""
 
1674
 
 
1675
                        @functools.wraps(func2)
816
1676
                        def call_both(*args, **kwargs):
817
1677
                            """This function will emit two D-Bus
818
1678
                            signals by calling func1 and func2"""
819
1679
                            func1(*args, **kwargs)
820
1680
                            func2(*args, **kwargs)
 
1681
                        # Make wrapper function look like a D-Bus
 
1682
                        # signal
 
1683
                        for name, attr in inspect.getmembers(func2):
 
1684
                            if name.startswith("_dbus_"):
 
1685
                                setattr(call_both, name, attr)
 
1686
 
821
1687
                        return call_both
822
1688
                    # Create the "call_both" function and add it to
823
1689
                    # the class
824
 
                    attr[attrname] = fixscope(attribute,
825
 
                                              new_function)
 
1690
                    attr[attrname] = fixscope(attribute, new_function)
826
1691
                # Is this a D-Bus method?
827
1692
                elif getattr(attribute, "_dbus_is_method", False):
828
1693
                    # Create a new, but exactly alike, function
829
1694
                    # object.  Decorate it to be a new D-Bus method
830
1695
                    # with the alternate D-Bus interface name.  Add it
831
1696
                    # to the class.
832
 
                    attr[attrname] = (dbus.service.method
833
 
                                      (alt_interface,
834
 
                                       attribute._dbus_in_signature,
835
 
                                       attribute._dbus_out_signature)
836
 
                                      (types.FunctionType
837
 
                                       (attribute.func_code,
838
 
                                        attribute.func_globals,
839
 
                                        attribute.func_name,
840
 
                                        attribute.func_defaults,
841
 
                                        attribute.func_closure)))
 
1697
                    attr[attrname] = (
 
1698
                        dbus.service.method(
 
1699
                            alt_interface,
 
1700
                            attribute._dbus_in_signature,
 
1701
                            attribute._dbus_out_signature)
 
1702
                        (copy_function(attribute)))
 
1703
                    # Copy annotations, if any
 
1704
                    try:
 
1705
                        attr[attrname]._dbus_annotations = dict(
 
1706
                            attribute._dbus_annotations)
 
1707
                    except AttributeError:
 
1708
                        pass
842
1709
                # Is this a D-Bus property?
843
1710
                elif getattr(attribute, "_dbus_is_property", False):
844
1711
                    # Create a new, but exactly alike, function
845
1712
                    # object, and decorate it to be a new D-Bus
846
1713
                    # property with the alternate D-Bus interface
847
1714
                    # name.  Add it to the class.
848
 
                    attr[attrname] = (dbus_service_property
849
 
                                      (alt_interface,
850
 
                                       attribute._dbus_signature,
851
 
                                       attribute._dbus_access,
852
 
                                       attribute
853
 
                                       ._dbus_get_args_options
854
 
                                       ["byte_arrays"])
855
 
                                      (types.FunctionType
856
 
                                       (attribute.func_code,
857
 
                                        attribute.func_globals,
858
 
                                        attribute.func_name,
859
 
                                        attribute.func_defaults,
860
 
                                        attribute.func_closure)))
861
 
        return type.__new__(mcs, name, bases, attr)
862
 
 
 
1715
                    attr[attrname] = (dbus_service_property(
 
1716
                        alt_interface, attribute._dbus_signature,
 
1717
                        attribute._dbus_access,
 
1718
                        attribute._dbus_get_args_options
 
1719
                        ["byte_arrays"])
 
1720
                                      (copy_function(attribute)))
 
1721
                    # Copy annotations, if any
 
1722
                    try:
 
1723
                        attr[attrname]._dbus_annotations = dict(
 
1724
                            attribute._dbus_annotations)
 
1725
                    except AttributeError:
 
1726
                        pass
 
1727
                # Is this a D-Bus interface?
 
1728
                elif getattr(attribute, "_dbus_is_interface", False):
 
1729
                    # Create a new, but exactly alike, function
 
1730
                    # object.  Decorate it to be a new D-Bus interface
 
1731
                    # with the alternate D-Bus interface name.  Add it
 
1732
                    # to the class.
 
1733
                    attr[attrname] = (
 
1734
                        dbus_interface_annotations(alt_interface)
 
1735
                        (copy_function(attribute)))
 
1736
            if deprecate:
 
1737
                # Deprecate all alternate interfaces
 
1738
                iname = "_AlternateDBusNames_interface_annotation{}"
 
1739
                for interface_name in interface_names:
 
1740
 
 
1741
                    @dbus_interface_annotations(interface_name)
 
1742
                    def func(self):
 
1743
                        return {"org.freedesktop.DBus.Deprecated":
 
1744
                                "true"}
 
1745
                    # Find an unused name
 
1746
                    for aname in (iname.format(i)
 
1747
                                  for i in itertools.count()):
 
1748
                        if aname not in attr:
 
1749
                            attr[aname] = func
 
1750
                            break
 
1751
            if interface_names:
 
1752
                # Replace the class with a new subclass of it with
 
1753
                # methods, signals, etc. as created above.
 
1754
                if sys.version_info.major == 2:
 
1755
                    cls = type(b"{}Alternate".format(cls.__name__),
 
1756
                               (cls, ), attr)
 
1757
                else:
 
1758
                    cls = type("{}Alternate".format(cls.__name__),
 
1759
                               (cls, ), attr)
 
1760
        return cls
 
1761
 
 
1762
    return wrapper
 
1763
 
 
1764
 
 
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
 
1766
                            "se.bsnet.fukt.Mandos"})
863
1767
class ClientDBus(Client, DBusObjectWithProperties):
864
1768
    """A Client class using D-Bus
865
 
    
 
1769
 
866
1770
    Attributes:
867
1771
    dbus_object_path: dbus.ObjectPath
868
1772
    bus: dbus.SystemBus()
869
1773
    """
870
 
    
 
1774
 
871
1775
    runtime_expansions = (Client.runtime_expansions
872
 
                          + ("dbus_object_path",))
873
 
    
 
1776
                          + ("dbus_object_path", ))
 
1777
 
 
1778
    _interface = "se.recompile.Mandos.Client"
 
1779
 
874
1780
    # dbus.service.Object doesn't use super(), so we can't either.
875
 
    
876
 
    def __init__(self, bus = None, *args, **kwargs):
877
 
        self._approvals_pending = 0
 
1781
 
 
1782
    def __init__(self, bus=None, *args, **kwargs):
878
1783
        self.bus = bus
879
1784
        Client.__init__(self, *args, **kwargs)
880
1785
        # Only now, when this client is initialized, can it show up on
881
1786
        # the D-Bus
882
 
        client_object_name = unicode(self.name).translate(
 
1787
        client_object_name = str(self.name).translate(
883
1788
            {ord("."): ord("_"),
884
1789
             ord("-"): ord("_")})
885
 
        self.dbus_object_path = (dbus.ObjectPath
886
 
                                 ("/clients/" + client_object_name))
 
1790
        self.dbus_object_path = dbus.ObjectPath(
 
1791
            "/clients/" + client_object_name)
887
1792
        DBusObjectWithProperties.__init__(self, self.bus,
888
1793
                                          self.dbus_object_path)
889
 
        
890
 
    def notifychangeproperty(transform_func,
891
 
                             dbus_name, type_func=lambda x: x,
892
 
                             variant_level=1):
 
1794
 
 
1795
    def notifychangeproperty(transform_func, dbus_name,
 
1796
                             type_func=lambda x: x,
 
1797
                             variant_level=1,
 
1798
                             invalidate_only=False,
 
1799
                             _interface=_interface):
893
1800
        """ Modify a variable so that it's a property which announces
894
1801
        its changes to DBus.
895
1802
 
900
1807
                   to the D-Bus.  Default: no transform
901
1808
        variant_level: D-Bus variant level.  Default: 1
902
1809
        """
903
 
        attrname = "_{0}".format(dbus_name)
 
1810
        attrname = "_{}".format(dbus_name)
 
1811
 
904
1812
        def setter(self, value):
905
1813
            if hasattr(self, "dbus_object_path"):
906
1814
                if (not hasattr(self, attrname) or
907
1815
                    type_func(getattr(self, attrname, None))
908
1816
                    != type_func(value)):
909
 
                    dbus_value = transform_func(type_func(value),
910
 
                                                variant_level
911
 
                                                =variant_level)
912
 
                    self.PropertyChanged(dbus.String(dbus_name),
913
 
                                         dbus_value)
 
1817
                    if invalidate_only:
 
1818
                        self.PropertiesChanged(
 
1819
                            _interface, dbus.Dictionary(),
 
1820
                            dbus.Array((dbus_name, )))
 
1821
                    else:
 
1822
                        dbus_value = transform_func(
 
1823
                            type_func(value),
 
1824
                            variant_level=variant_level)
 
1825
                        self.PropertyChanged(dbus.String(dbus_name),
 
1826
                                             dbus_value)
 
1827
                        self.PropertiesChanged(
 
1828
                            _interface,
 
1829
                            dbus.Dictionary({dbus.String(dbus_name):
 
1830
                                             dbus_value}),
 
1831
                            dbus.Array())
914
1832
            setattr(self, attrname, value)
915
 
        
 
1833
 
916
1834
        return property(lambda self: getattr(self, attrname), setter)
917
 
    
918
 
    
 
1835
 
919
1836
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
920
1837
    approvals_pending = notifychangeproperty(dbus.Boolean,
921
1838
                                             "ApprovalPending",
922
 
                                             type_func = bool)
 
1839
                                             type_func=bool)
923
1840
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
924
1841
    last_enabled = notifychangeproperty(datetime_to_dbus,
925
1842
                                        "LastEnabled")
926
 
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
 
                                   type_func = lambda checker:
928
 
                                       checker is not None)
 
1843
    checker = notifychangeproperty(
 
1844
        dbus.Boolean, "CheckerRunning",
 
1845
        type_func=lambda checker: checker is not None)
929
1846
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
930
1847
                                           "LastCheckedOK")
 
1848
    last_checker_status = notifychangeproperty(dbus.Int16,
 
1849
                                               "LastCheckerStatus")
931
1850
    last_approval_request = notifychangeproperty(
932
1851
        datetime_to_dbus, "LastApprovalRequest")
933
1852
    approved_by_default = notifychangeproperty(dbus.Boolean,
934
1853
                                               "ApprovedByDefault")
935
 
    approval_delay = notifychangeproperty(dbus.UInt16,
936
 
                                          "ApprovalDelay",
937
 
                                          type_func =
938
 
                                          _timedelta_to_milliseconds)
 
1854
    approval_delay = notifychangeproperty(
 
1855
        dbus.UInt64, "ApprovalDelay",
 
1856
        type_func=lambda td: td.total_seconds() * 1000)
939
1857
    approval_duration = notifychangeproperty(
940
 
        dbus.UInt16, "ApprovalDuration",
941
 
        type_func = _timedelta_to_milliseconds)
 
1858
        dbus.UInt64, "ApprovalDuration",
 
1859
        type_func=lambda td: td.total_seconds() * 1000)
942
1860
    host = notifychangeproperty(dbus.String, "Host")
943
 
    timeout = notifychangeproperty(dbus.UInt16, "Timeout",
944
 
                                   type_func =
945
 
                                   _timedelta_to_milliseconds)
 
1861
    timeout = notifychangeproperty(
 
1862
        dbus.UInt64, "Timeout",
 
1863
        type_func=lambda td: td.total_seconds() * 1000)
946
1864
    extended_timeout = notifychangeproperty(
947
 
        dbus.UInt16, "ExtendedTimeout",
948
 
        type_func = _timedelta_to_milliseconds)
949
 
    interval = notifychangeproperty(dbus.UInt16,
950
 
                                    "Interval",
951
 
                                    type_func =
952
 
                                    _timedelta_to_milliseconds)
 
1865
        dbus.UInt64, "ExtendedTimeout",
 
1866
        type_func=lambda td: td.total_seconds() * 1000)
 
1867
    interval = notifychangeproperty(
 
1868
        dbus.UInt64, "Interval",
 
1869
        type_func=lambda td: td.total_seconds() * 1000)
953
1870
    checker_command = notifychangeproperty(dbus.String, "Checker")
954
 
    
 
1871
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
 
1872
                                  invalidate_only=True)
 
1873
 
955
1874
    del notifychangeproperty
956
 
    
 
1875
 
957
1876
    def __del__(self, *args, **kwargs):
958
1877
        try:
959
1878
            self.remove_from_connection()
962
1881
        if hasattr(DBusObjectWithProperties, "__del__"):
963
1882
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
964
1883
        Client.__del__(self, *args, **kwargs)
965
 
    
966
 
    def checker_callback(self, pid, condition, command,
967
 
                         *args, **kwargs):
968
 
        self.checker_callback_tag = None
969
 
        self.checker = None
970
 
        if os.WIFEXITED(condition):
971
 
            exitstatus = os.WEXITSTATUS(condition)
 
1884
 
 
1885
    def checker_callback(self, source, condition,
 
1886
                         connection, command, *args, **kwargs):
 
1887
        ret = Client.checker_callback(self, source, condition,
 
1888
                                      connection, command, *args,
 
1889
                                      **kwargs)
 
1890
        exitstatus = self.last_checker_status
 
1891
        if exitstatus >= 0:
972
1892
            # Emit D-Bus signal
973
1893
            self.CheckerCompleted(dbus.Int16(exitstatus),
974
 
                                  dbus.Int64(condition),
 
1894
                                  # This is specific to GNU libC
 
1895
                                  dbus.Int64(exitstatus << 8),
975
1896
                                  dbus.String(command))
976
1897
        else:
977
1898
            # Emit D-Bus signal
978
1899
            self.CheckerCompleted(dbus.Int16(-1),
979
 
                                  dbus.Int64(condition),
 
1900
                                  dbus.Int64(
 
1901
                                      # This is specific to GNU libC
 
1902
                                      (exitstatus << 8)
 
1903
                                      | self.last_checker_signal),
980
1904
                                  dbus.String(command))
981
 
        
982
 
        return Client.checker_callback(self, pid, condition, command,
983
 
                                       *args, **kwargs)
984
 
    
 
1905
        return ret
 
1906
 
985
1907
    def start_checker(self, *args, **kwargs):
986
 
        old_checker = self.checker
987
 
        if self.checker is not None:
988
 
            old_checker_pid = self.checker.pid
989
 
        else:
990
 
            old_checker_pid = None
 
1908
        old_checker_pid = getattr(self.checker, "pid", None)
991
1909
        r = Client.start_checker(self, *args, **kwargs)
992
1910
        # Only if new checker process was started
993
1911
        if (self.checker is not None
995
1913
            # Emit D-Bus signal
996
1914
            self.CheckerStarted(self.current_checker_command)
997
1915
        return r
998
 
    
 
1916
 
999
1917
    def _reset_approved(self):
1000
 
        self._approved = None
 
1918
        self.approved = None
1001
1919
        return False
1002
 
    
 
1920
 
1003
1921
    def approve(self, value=True):
 
1922
        self.approved = value
 
1923
        GLib.timeout_add(int(self.approval_duration.total_seconds()
 
1924
                             * 1000), self._reset_approved)
1004
1925
        self.send_changedstate()
1005
 
        self._approved = value
1006
 
        gobject.timeout_add(_timedelta_to_milliseconds
1007
 
                            (self.approval_duration),
1008
 
                            self._reset_approved)
1009
 
    
1010
 
    
1011
 
    ## D-Bus methods, signals & properties
1012
 
    _interface = "se.recompile.Mandos.Client"
1013
 
    
1014
 
    ## Signals
1015
 
    
 
1926
 
 
1927
    #  D-Bus methods, signals & properties
 
1928
 
 
1929
    #  Interfaces
 
1930
 
 
1931
    #  Signals
 
1932
 
1016
1933
    # CheckerCompleted - signal
1017
1934
    @dbus.service.signal(_interface, signature="nxs")
1018
1935
    def CheckerCompleted(self, exitcode, waitstatus, command):
1019
1936
        "D-Bus signal"
1020
1937
        pass
1021
 
    
 
1938
 
1022
1939
    # CheckerStarted - signal
1023
1940
    @dbus.service.signal(_interface, signature="s")
1024
1941
    def CheckerStarted(self, command):
1025
1942
        "D-Bus signal"
1026
1943
        pass
1027
 
    
 
1944
 
1028
1945
    # PropertyChanged - signal
 
1946
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1029
1947
    @dbus.service.signal(_interface, signature="sv")
1030
1948
    def PropertyChanged(self, property, value):
1031
1949
        "D-Bus signal"
1032
1950
        pass
1033
 
    
 
1951
 
1034
1952
    # GotSecret - signal
1035
1953
    @dbus.service.signal(_interface)
1036
1954
    def GotSecret(self):
1039
1957
        server to mandos-client
1040
1958
        """
1041
1959
        pass
1042
 
    
 
1960
 
1043
1961
    # Rejected - signal
1044
1962
    @dbus.service.signal(_interface, signature="s")
1045
1963
    def Rejected(self, reason):
1046
1964
        "D-Bus signal"
1047
1965
        pass
1048
 
    
 
1966
 
1049
1967
    # NeedApproval - signal
1050
1968
    @dbus.service.signal(_interface, signature="tb")
1051
1969
    def NeedApproval(self, timeout, default):
1052
1970
        "D-Bus signal"
1053
1971
        return self.need_approval()
1054
 
    
1055
 
    ## Methods
1056
 
    
 
1972
 
 
1973
    #  Methods
 
1974
 
1057
1975
    # Approve - method
1058
1976
    @dbus.service.method(_interface, in_signature="b")
1059
1977
    def Approve(self, value):
1060
1978
        self.approve(value)
1061
 
    
 
1979
 
1062
1980
    # CheckedOK - method
1063
1981
    @dbus.service.method(_interface)
1064
1982
    def CheckedOK(self):
1065
1983
        self.checked_ok()
1066
 
    
 
1984
 
1067
1985
    # Enable - method
 
1986
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1068
1987
    @dbus.service.method(_interface)
1069
1988
    def Enable(self):
1070
1989
        "D-Bus method"
1071
1990
        self.enable()
1072
 
    
 
1991
 
1073
1992
    # StartChecker - method
 
1993
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1074
1994
    @dbus.service.method(_interface)
1075
1995
    def StartChecker(self):
1076
1996
        "D-Bus method"
1077
1997
        self.start_checker()
1078
 
    
 
1998
 
1079
1999
    # Disable - method
 
2000
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1080
2001
    @dbus.service.method(_interface)
1081
2002
    def Disable(self):
1082
2003
        "D-Bus method"
1083
2004
        self.disable()
1084
 
    
 
2005
 
1085
2006
    # StopChecker - method
 
2007
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1086
2008
    @dbus.service.method(_interface)
1087
2009
    def StopChecker(self):
1088
2010
        self.stop_checker()
1089
 
    
1090
 
    ## Properties
1091
 
    
 
2011
 
 
2012
    #  Properties
 
2013
 
1092
2014
    # ApprovalPending - property
1093
2015
    @dbus_service_property(_interface, signature="b", access="read")
1094
2016
    def ApprovalPending_dbus_property(self):
1095
2017
        return dbus.Boolean(bool(self.approvals_pending))
1096
 
    
 
2018
 
1097
2019
    # ApprovedByDefault - property
1098
 
    @dbus_service_property(_interface, signature="b",
 
2020
    @dbus_service_property(_interface,
 
2021
                           signature="b",
1099
2022
                           access="readwrite")
1100
2023
    def ApprovedByDefault_dbus_property(self, value=None):
1101
2024
        if value is None:       # get
1102
2025
            return dbus.Boolean(self.approved_by_default)
1103
2026
        self.approved_by_default = bool(value)
1104
 
    
 
2027
 
1105
2028
    # ApprovalDelay - property
1106
 
    @dbus_service_property(_interface, signature="t",
 
2029
    @dbus_service_property(_interface,
 
2030
                           signature="t",
1107
2031
                           access="readwrite")
1108
2032
    def ApprovalDelay_dbus_property(self, value=None):
1109
2033
        if value is None:       # get
1110
 
            return dbus.UInt64(self.approval_delay_milliseconds())
 
2034
            return dbus.UInt64(self.approval_delay.total_seconds()
 
2035
                               * 1000)
1111
2036
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
1112
 
    
 
2037
 
1113
2038
    # ApprovalDuration - property
1114
 
    @dbus_service_property(_interface, signature="t",
 
2039
    @dbus_service_property(_interface,
 
2040
                           signature="t",
1115
2041
                           access="readwrite")
1116
2042
    def ApprovalDuration_dbus_property(self, value=None):
1117
2043
        if value is None:       # get
1118
 
            return dbus.UInt64(_timedelta_to_milliseconds(
1119
 
                    self.approval_duration))
 
2044
            return dbus.UInt64(self.approval_duration.total_seconds()
 
2045
                               * 1000)
1120
2046
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
1121
 
    
 
2047
 
1122
2048
    # Name - property
 
2049
    @dbus_annotations(
 
2050
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1123
2051
    @dbus_service_property(_interface, signature="s", access="read")
1124
2052
    def Name_dbus_property(self):
1125
2053
        return dbus.String(self.name)
1126
 
    
 
2054
 
 
2055
    # KeyID - property
 
2056
    @dbus_annotations(
 
2057
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2058
    @dbus_service_property(_interface, signature="s", access="read")
 
2059
    def KeyID_dbus_property(self):
 
2060
        return dbus.String(self.key_id)
 
2061
 
1127
2062
    # Fingerprint - property
 
2063
    @dbus_annotations(
 
2064
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1128
2065
    @dbus_service_property(_interface, signature="s", access="read")
1129
2066
    def Fingerprint_dbus_property(self):
1130
2067
        return dbus.String(self.fingerprint)
1131
 
    
 
2068
 
1132
2069
    # Host - property
1133
 
    @dbus_service_property(_interface, signature="s",
 
2070
    @dbus_service_property(_interface,
 
2071
                           signature="s",
1134
2072
                           access="readwrite")
1135
2073
    def Host_dbus_property(self, value=None):
1136
2074
        if value is None:       # get
1137
2075
            return dbus.String(self.host)
1138
 
        self.host = value
1139
 
    
 
2076
        self.host = str(value)
 
2077
 
1140
2078
    # Created - property
 
2079
    @dbus_annotations(
 
2080
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1141
2081
    @dbus_service_property(_interface, signature="s", access="read")
1142
2082
    def Created_dbus_property(self):
1143
 
        return dbus.String(datetime_to_dbus(self.created))
1144
 
    
 
2083
        return datetime_to_dbus(self.created)
 
2084
 
1145
2085
    # LastEnabled - property
1146
2086
    @dbus_service_property(_interface, signature="s", access="read")
1147
2087
    def LastEnabled_dbus_property(self):
1148
2088
        return datetime_to_dbus(self.last_enabled)
1149
 
    
 
2089
 
1150
2090
    # Enabled - property
1151
 
    @dbus_service_property(_interface, signature="b",
 
2091
    @dbus_service_property(_interface,
 
2092
                           signature="b",
1152
2093
                           access="readwrite")
1153
2094
    def Enabled_dbus_property(self, value=None):
1154
2095
        if value is None:       # get
1157
2098
            self.enable()
1158
2099
        else:
1159
2100
            self.disable()
1160
 
    
 
2101
 
1161
2102
    # LastCheckedOK - property
1162
 
    @dbus_service_property(_interface, signature="s",
 
2103
    @dbus_service_property(_interface,
 
2104
                           signature="s",
1163
2105
                           access="readwrite")
1164
2106
    def LastCheckedOK_dbus_property(self, value=None):
1165
2107
        if value is not None:
1166
2108
            self.checked_ok()
1167
2109
            return
1168
2110
        return datetime_to_dbus(self.last_checked_ok)
1169
 
    
 
2111
 
 
2112
    # LastCheckerStatus - property
 
2113
    @dbus_service_property(_interface, signature="n", access="read")
 
2114
    def LastCheckerStatus_dbus_property(self):
 
2115
        return dbus.Int16(self.last_checker_status)
 
2116
 
1170
2117
    # Expires - property
1171
2118
    @dbus_service_property(_interface, signature="s", access="read")
1172
2119
    def Expires_dbus_property(self):
1173
2120
        return datetime_to_dbus(self.expires)
1174
 
    
 
2121
 
1175
2122
    # LastApprovalRequest - property
1176
2123
    @dbus_service_property(_interface, signature="s", access="read")
1177
2124
    def LastApprovalRequest_dbus_property(self):
1178
2125
        return datetime_to_dbus(self.last_approval_request)
1179
 
    
 
2126
 
1180
2127
    # Timeout - property
1181
 
    @dbus_service_property(_interface, signature="t",
 
2128
    @dbus_service_property(_interface,
 
2129
                           signature="t",
1182
2130
                           access="readwrite")
1183
2131
    def Timeout_dbus_property(self, value=None):
1184
2132
        if value is None:       # get
1185
 
            return dbus.UInt64(self.timeout_milliseconds())
 
2133
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
 
2134
        old_timeout = self.timeout
1186
2135
        self.timeout = datetime.timedelta(0, 0, 0, value)
1187
 
        if getattr(self, "disable_initiator_tag", None) is None:
1188
 
            return
1189
 
        # Reschedule timeout
1190
 
        gobject.source_remove(self.disable_initiator_tag)
1191
 
        self.disable_initiator_tag = None
1192
 
        self.expires = None
1193
 
        time_to_die = _timedelta_to_milliseconds((self
1194
 
                                                  .last_checked_ok
1195
 
                                                  + self.timeout)
1196
 
                                                 - datetime.datetime
1197
 
                                                 .utcnow())
1198
 
        if time_to_die <= 0:
1199
 
            # The timeout has passed
1200
 
            self.disable()
1201
 
        else:
1202
 
            self.expires = (datetime.datetime.utcnow()
1203
 
                            + datetime.timedelta(milliseconds =
1204
 
                                                 time_to_die))
1205
 
            self.disable_initiator_tag = (gobject.timeout_add
1206
 
                                          (time_to_die, self.disable))
1207
 
    
 
2136
        # Reschedule disabling
 
2137
        if self.enabled:
 
2138
            now = datetime.datetime.utcnow()
 
2139
            self.expires += self.timeout - old_timeout
 
2140
            if self.expires <= now:
 
2141
                # The timeout has passed
 
2142
                self.disable()
 
2143
            else:
 
2144
                if (getattr(self, "disable_initiator_tag", None)
 
2145
                    is None):
 
2146
                    return
 
2147
                GLib.source_remove(self.disable_initiator_tag)
 
2148
                self.disable_initiator_tag = GLib.timeout_add(
 
2149
                    int((self.expires - now).total_seconds() * 1000),
 
2150
                    self.disable)
 
2151
 
1208
2152
    # ExtendedTimeout - property
1209
 
    @dbus_service_property(_interface, signature="t",
 
2153
    @dbus_service_property(_interface,
 
2154
                           signature="t",
1210
2155
                           access="readwrite")
1211
2156
    def ExtendedTimeout_dbus_property(self, value=None):
1212
2157
        if value is None:       # get
1213
 
            return dbus.UInt64(self.extended_timeout_milliseconds())
 
2158
            return dbus.UInt64(self.extended_timeout.total_seconds()
 
2159
                               * 1000)
1214
2160
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1215
 
    
 
2161
 
1216
2162
    # Interval - property
1217
 
    @dbus_service_property(_interface, signature="t",
 
2163
    @dbus_service_property(_interface,
 
2164
                           signature="t",
1218
2165
                           access="readwrite")
1219
2166
    def Interval_dbus_property(self, value=None):
1220
2167
        if value is None:       # get
1221
 
            return dbus.UInt64(self.interval_milliseconds())
 
2168
            return dbus.UInt64(self.interval.total_seconds() * 1000)
1222
2169
        self.interval = datetime.timedelta(0, 0, 0, value)
1223
2170
        if getattr(self, "checker_initiator_tag", None) is None:
1224
2171
            return
1225
 
        # Reschedule checker run
1226
 
        gobject.source_remove(self.checker_initiator_tag)
1227
 
        self.checker_initiator_tag = (gobject.timeout_add
1228
 
                                      (value, self.start_checker))
1229
 
        self.start_checker()    # Start one now, too
1230
 
    
 
2172
        if self.enabled:
 
2173
            # Reschedule checker run
 
2174
            GLib.source_remove(self.checker_initiator_tag)
 
2175
            self.checker_initiator_tag = GLib.timeout_add(
 
2176
                value, self.start_checker)
 
2177
            self.start_checker()  # Start one now, too
 
2178
 
1231
2179
    # Checker - property
1232
 
    @dbus_service_property(_interface, signature="s",
 
2180
    @dbus_service_property(_interface,
 
2181
                           signature="s",
1233
2182
                           access="readwrite")
1234
2183
    def Checker_dbus_property(self, value=None):
1235
2184
        if value is None:       # get
1236
2185
            return dbus.String(self.checker_command)
1237
 
        self.checker_command = value
1238
 
    
 
2186
        self.checker_command = str(value)
 
2187
 
1239
2188
    # CheckerRunning - property
1240
 
    @dbus_service_property(_interface, signature="b",
 
2189
    @dbus_service_property(_interface,
 
2190
                           signature="b",
1241
2191
                           access="readwrite")
1242
2192
    def CheckerRunning_dbus_property(self, value=None):
1243
2193
        if value is None:       # get
1246
2196
            self.start_checker()
1247
2197
        else:
1248
2198
            self.stop_checker()
1249
 
    
 
2199
 
1250
2200
    # ObjectPath - property
 
2201
    @dbus_annotations(
 
2202
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
 
2203
         "org.freedesktop.DBus.Deprecated": "true"})
1251
2204
    @dbus_service_property(_interface, signature="o", access="read")
1252
2205
    def ObjectPath_dbus_property(self):
1253
 
        return self.dbus_object_path # is already a dbus.ObjectPath
1254
 
    
 
2206
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2207
 
1255
2208
    # Secret = property
1256
 
    @dbus_service_property(_interface, signature="ay",
1257
 
                           access="write", byte_arrays=True)
 
2209
    @dbus_annotations(
 
2210
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
 
2211
         "invalidates"})
 
2212
    @dbus_service_property(_interface,
 
2213
                           signature="ay",
 
2214
                           access="write",
 
2215
                           byte_arrays=True)
1258
2216
    def Secret_dbus_property(self, value):
1259
 
        self.secret = str(value)
1260
 
    
 
2217
        self.secret = bytes(value)
 
2218
 
1261
2219
    del _interface
1262
2220
 
1263
2221
 
1264
2222
class ProxyClient(object):
1265
 
    def __init__(self, child_pipe, fpr, address):
 
2223
    def __init__(self, child_pipe, key_id, fpr, address):
1266
2224
        self._pipe = child_pipe
1267
 
        self._pipe.send(('init', fpr, address))
 
2225
        self._pipe.send(('init', key_id, fpr, address))
1268
2226
        if not self._pipe.recv():
1269
 
            raise KeyError()
1270
 
    
 
2227
            raise KeyError(key_id or fpr)
 
2228
 
1271
2229
    def __getattribute__(self, name):
1272
 
        if(name == '_pipe'):
 
2230
        if name == '_pipe':
1273
2231
            return super(ProxyClient, self).__getattribute__(name)
1274
2232
        self._pipe.send(('getattr', name))
1275
2233
        data = self._pipe.recv()
1276
2234
        if data[0] == 'data':
1277
2235
            return data[1]
1278
2236
        if data[0] == 'function':
 
2237
 
1279
2238
            def func(*args, **kwargs):
1280
2239
                self._pipe.send(('funcall', name, args, kwargs))
1281
2240
                return self._pipe.recv()[1]
 
2241
 
1282
2242
            return func
1283
 
    
 
2243
 
1284
2244
    def __setattr__(self, name, value):
1285
 
        if(name == '_pipe'):
 
2245
        if name == '_pipe':
1286
2246
            return super(ProxyClient, self).__setattr__(name, value)
1287
2247
        self._pipe.send(('setattr', name, value))
1288
2248
 
1289
 
class ClientDBusTransitional(ClientDBus):
1290
 
    __metaclass__ = AlternateDBusNamesMetaclass
1291
2249
 
1292
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1293
2251
    """A class to handle client connections.
1294
 
    
 
2252
 
1295
2253
    Instantiated once for each connection to handle it.
1296
2254
    Note: This will run in its own forked process."""
1297
 
    
 
2255
 
1298
2256
    def handle(self):
1299
2257
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1300
2258
            logger.info("TCP connection from: %s",
1301
 
                        unicode(self.client_address))
 
2259
                        str(self.client_address))
1302
2260
            logger.debug("Pipe FD: %d",
1303
2261
                         self.server.child_pipe.fileno())
1304
 
            
1305
 
            session = (gnutls.connection
1306
 
                       .ClientSession(self.request,
1307
 
                                      gnutls.connection
1308
 
                                      .X509Credentials()))
1309
 
            
1310
 
            # Note: gnutls.connection.X509Credentials is really a
1311
 
            # generic GnuTLS certificate credentials object so long as
1312
 
            # no X.509 keys are added to it.  Therefore, we can use it
1313
 
            # here despite using OpenPGP certificates.
1314
 
            
1315
 
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
 
            #                      "+AES-256-CBC", "+SHA1",
1317
 
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
1318
 
            #                      "+DHE-DSS"))
 
2262
 
 
2263
            session = gnutls.ClientSession(self.request)
 
2264
 
 
2265
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
2266
            #                       "+AES-256-CBC", "+SHA1",
 
2267
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
 
2268
            #                       "+DHE-DSS"))
1319
2269
            # Use a fallback default, since this MUST be set.
1320
2270
            priority = self.server.gnutls_priority
1321
2271
            if priority is None:
1322
2272
                priority = "NORMAL"
1323
 
            (gnutls.library.functions
1324
 
             .gnutls_priority_set_direct(session._c_object,
1325
 
                                         priority, None))
1326
 
            
 
2273
            gnutls.priority_set_direct(session._c_object,
 
2274
                                       priority.encode("utf-8"),
 
2275
                                       None)
 
2276
 
1327
2277
            # Start communication using the Mandos protocol
1328
2278
            # Get protocol number
1329
2279
            line = self.request.makefile().readline()
1330
2280
            logger.debug("Protocol version: %r", line)
1331
2281
            try:
1332
2282
                if int(line.strip().split()[0]) > 1:
1333
 
                    raise RuntimeError
 
2283
                    raise RuntimeError(line)
1334
2284
            except (ValueError, IndexError, RuntimeError) as error:
1335
2285
                logger.error("Unknown protocol version: %s", error)
1336
2286
                return
1337
 
            
 
2287
 
1338
2288
            # Start GnuTLS connection
1339
2289
            try:
1340
2290
                session.handshake()
1341
 
            except gnutls.errors.GNUTLSError as error:
 
2291
            except gnutls.Error as error:
1342
2292
                logger.warning("Handshake failed: %s", error)
1343
2293
                # Do not run session.bye() here: the session is not
1344
2294
                # established.  Just abandon the request.
1345
2295
                return
1346
2296
            logger.debug("Handshake succeeded")
1347
 
            
 
2297
 
1348
2298
            approval_required = False
1349
2299
            try:
1350
 
                try:
1351
 
                    fpr = self.fingerprint(self.peer_certificate
1352
 
                                           (session))
1353
 
                except (TypeError,
1354
 
                        gnutls.errors.GNUTLSError) as error:
1355
 
                    logger.warning("Bad certificate: %s", error)
1356
 
                    return
1357
 
                logger.debug("Fingerprint: %s", fpr)
1358
 
                
1359
 
                try:
1360
 
                    client = ProxyClient(child_pipe, fpr,
 
2300
                if gnutls.has_rawpk:
 
2301
                    fpr = ""
 
2302
                    try:
 
2303
                        key_id = self.key_id(
 
2304
                            self.peer_certificate(session))
 
2305
                    except (TypeError, gnutls.Error) as error:
 
2306
                        logger.warning("Bad certificate: %s", error)
 
2307
                        return
 
2308
                    logger.debug("Key ID: %s", key_id)
 
2309
 
 
2310
                else:
 
2311
                    key_id = ""
 
2312
                    try:
 
2313
                        fpr = self.fingerprint(
 
2314
                            self.peer_certificate(session))
 
2315
                    except (TypeError, gnutls.Error) as error:
 
2316
                        logger.warning("Bad certificate: %s", error)
 
2317
                        return
 
2318
                    logger.debug("Fingerprint: %s", fpr)
 
2319
 
 
2320
                try:
 
2321
                    client = ProxyClient(child_pipe, key_id, fpr,
1361
2322
                                         self.client_address)
1362
2323
                except KeyError:
1363
2324
                    return
1364
 
                
 
2325
 
1365
2326
                if client.approval_delay:
1366
2327
                    delay = client.approval_delay
1367
2328
                    client.approvals_pending += 1
1368
2329
                    approval_required = True
1369
 
                
 
2330
 
1370
2331
                while True:
1371
2332
                    if not client.enabled:
1372
2333
                        logger.info("Client %s is disabled",
1373
 
                                       client.name)
 
2334
                                    client.name)
1374
2335
                        if self.server.use_dbus:
1375
2336
                            # Emit D-Bus signal
1376
2337
                            client.Rejected("Disabled")
1377
2338
                        return
1378
 
                    
1379
 
                    if client._approved or not client.approval_delay:
1380
 
                        #We are approved or approval is disabled
 
2339
 
 
2340
                    if client.approved or not client.approval_delay:
 
2341
                        # We are approved or approval is disabled
1381
2342
                        break
1382
 
                    elif client._approved is None:
 
2343
                    elif client.approved is None:
1383
2344
                        logger.info("Client %s needs approval",
1384
2345
                                    client.name)
1385
2346
                        if self.server.use_dbus:
1386
2347
                            # Emit D-Bus signal
1387
2348
                            client.NeedApproval(
1388
 
                                client.approval_delay_milliseconds(),
1389
 
                                client.approved_by_default)
 
2349
                                client.approval_delay.total_seconds()
 
2350
                                * 1000, client.approved_by_default)
1390
2351
                    else:
1391
2352
                        logger.warning("Client %s was not approved",
1392
2353
                                       client.name)
1394
2355
                            # Emit D-Bus signal
1395
2356
                            client.Rejected("Denied")
1396
2357
                        return
1397
 
                    
1398
 
                    #wait until timeout or approved
 
2358
 
 
2359
                    # wait until timeout or approved
1399
2360
                    time = datetime.datetime.now()
1400
2361
                    client.changedstate.acquire()
1401
 
                    (client.changedstate.wait
1402
 
                     (float(client._timedelta_to_milliseconds(delay)
1403
 
                            / 1000)))
 
2362
                    client.changedstate.wait(delay.total_seconds())
1404
2363
                    client.changedstate.release()
1405
2364
                    time2 = datetime.datetime.now()
1406
2365
                    if (time2 - time) >= delay:
1416
2375
                            break
1417
2376
                    else:
1418
2377
                        delay -= time2 - time
1419
 
                
1420
 
                sent_size = 0
1421
 
                while sent_size < len(client.secret):
1422
 
                    try:
1423
 
                        sent = session.send(client.secret[sent_size:])
1424
 
                    except gnutls.errors.GNUTLSError as error:
1425
 
                        logger.warning("gnutls send failed")
1426
 
                        return
1427
 
                    logger.debug("Sent: %d, remaining: %d",
1428
 
                                 sent, len(client.secret)
1429
 
                                 - (sent_size + sent))
1430
 
                    sent_size += sent
1431
 
                
 
2378
 
 
2379
                try:
 
2380
                    session.send(client.secret)
 
2381
                except gnutls.Error as error:
 
2382
                    logger.warning("gnutls send failed",
 
2383
                                   exc_info=error)
 
2384
                    return
 
2385
 
1432
2386
                logger.info("Sending secret to %s", client.name)
1433
2387
                # bump the timeout using extended_timeout
1434
 
                client.checked_ok(client.extended_timeout)
 
2388
                client.bump_timeout(client.extended_timeout)
1435
2389
                if self.server.use_dbus:
1436
2390
                    # Emit D-Bus signal
1437
2391
                    client.GotSecret()
1438
 
            
 
2392
 
1439
2393
            finally:
1440
2394
                if approval_required:
1441
2395
                    client.approvals_pending -= 1
1442
2396
                try:
1443
2397
                    session.bye()
1444
 
                except gnutls.errors.GNUTLSError as error:
1445
 
                    logger.warning("GnuTLS bye failed")
1446
 
    
 
2398
                except gnutls.Error as error:
 
2399
                    logger.warning("GnuTLS bye failed",
 
2400
                                   exc_info=error)
 
2401
 
1447
2402
    @staticmethod
1448
2403
    def peer_certificate(session):
1449
 
        "Return the peer's OpenPGP certificate as a bytestring"
1450
 
        # If not an OpenPGP certificate...
1451
 
        if (gnutls.library.functions
1452
 
            .gnutls_certificate_type_get(session._c_object)
1453
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1454
 
            # ...do the normal thing
1455
 
            return session.peer_certificate
 
2404
        "Return the peer's certificate as a bytestring"
 
2405
        try:
 
2406
            cert_type = gnutls.certificate_type_get2(session._c_object,
 
2407
                                                     gnutls.CTYPE_PEERS)
 
2408
        except AttributeError:
 
2409
            cert_type = gnutls.certificate_type_get(session._c_object)
 
2410
        if gnutls.has_rawpk:
 
2411
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
 
2412
        else:
 
2413
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
 
2414
        # If not a valid certificate type...
 
2415
        if cert_type not in valid_cert_types:
 
2416
            logger.info("Cert type %r not in %r", cert_type,
 
2417
                        valid_cert_types)
 
2418
            # ...return invalid data
 
2419
            return b""
1456
2420
        list_size = ctypes.c_uint(1)
1457
 
        cert_list = (gnutls.library.functions
1458
 
                     .gnutls_certificate_get_peers
 
2421
        cert_list = (gnutls.certificate_get_peers
1459
2422
                     (session._c_object, ctypes.byref(list_size)))
1460
2423
        if not bool(cert_list) and list_size.value != 0:
1461
 
            raise gnutls.errors.GNUTLSError("error getting peer"
1462
 
                                            " certificate")
 
2424
            raise gnutls.Error("error getting peer certificate")
1463
2425
        if list_size.value == 0:
1464
2426
            return None
1465
2427
        cert = cert_list[0]
1466
2428
        return ctypes.string_at(cert.data, cert.size)
1467
 
    
 
2429
 
 
2430
    @staticmethod
 
2431
    def key_id(certificate):
 
2432
        "Convert a certificate bytestring to a hexdigit key ID"
 
2433
        # New GnuTLS "datum" with the public key
 
2434
        datum = gnutls.datum_t(
 
2435
            ctypes.cast(ctypes.c_char_p(certificate),
 
2436
                        ctypes.POINTER(ctypes.c_ubyte)),
 
2437
            ctypes.c_uint(len(certificate)))
 
2438
        # XXX all these need to be created in the gnutls "module"
 
2439
        # New empty GnuTLS certificate
 
2440
        pubkey = gnutls.pubkey_t()
 
2441
        gnutls.pubkey_init(ctypes.byref(pubkey))
 
2442
        # Import the raw public key into the certificate
 
2443
        gnutls.pubkey_import(pubkey,
 
2444
                             ctypes.byref(datum),
 
2445
                             gnutls.X509_FMT_DER)
 
2446
        # New buffer for the key ID
 
2447
        buf = ctypes.create_string_buffer(32)
 
2448
        buf_len = ctypes.c_size_t(len(buf))
 
2449
        # Get the key ID from the raw public key into the buffer
 
2450
        gnutls.pubkey_get_key_id(pubkey,
 
2451
                                 gnutls.KEYID_USE_SHA256,
 
2452
                                 ctypes.cast(ctypes.byref(buf),
 
2453
                                             ctypes.POINTER(ctypes.c_ubyte)),
 
2454
                                 ctypes.byref(buf_len))
 
2455
        # Deinit the certificate
 
2456
        gnutls.pubkey_deinit(pubkey)
 
2457
 
 
2458
        # Convert the buffer to a Python bytestring
 
2459
        key_id = ctypes.string_at(buf, buf_len.value)
 
2460
        # Convert the bytestring to hexadecimal notation
 
2461
        hex_key_id = binascii.hexlify(key_id).upper()
 
2462
        return hex_key_id
 
2463
 
1468
2464
    @staticmethod
1469
2465
    def fingerprint(openpgp):
1470
2466
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
1471
2467
        # New GnuTLS "datum" with the OpenPGP public key
1472
 
        datum = (gnutls.library.types
1473
 
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1474
 
                                             ctypes.POINTER
1475
 
                                             (ctypes.c_ubyte)),
1476
 
                                 ctypes.c_uint(len(openpgp))))
 
2468
        datum = gnutls.datum_t(
 
2469
            ctypes.cast(ctypes.c_char_p(openpgp),
 
2470
                        ctypes.POINTER(ctypes.c_ubyte)),
 
2471
            ctypes.c_uint(len(openpgp)))
1477
2472
        # New empty GnuTLS certificate
1478
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
1479
 
        (gnutls.library.functions
1480
 
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
2473
        crt = gnutls.openpgp_crt_t()
 
2474
        gnutls.openpgp_crt_init(ctypes.byref(crt))
1481
2475
        # Import the OpenPGP public key into the certificate
1482
 
        (gnutls.library.functions
1483
 
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
 
                                    gnutls.library.constants
1485
 
                                    .GNUTLS_OPENPGP_FMT_RAW))
 
2476
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2477
                                  gnutls.OPENPGP_FMT_RAW)
1486
2478
        # Verify the self signature in the key
1487
2479
        crtverify = ctypes.c_uint()
1488
 
        (gnutls.library.functions
1489
 
         .gnutls_openpgp_crt_verify_self(crt, 0,
1490
 
                                         ctypes.byref(crtverify)))
 
2480
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2481
                                       ctypes.byref(crtverify))
1491
2482
        if crtverify.value != 0:
1492
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
 
            raise (gnutls.errors.CertificateSecurityError
1494
 
                   ("Verify failed"))
 
2483
            gnutls.openpgp_crt_deinit(crt)
 
2484
            raise gnutls.CertificateSecurityError(code
 
2485
                                                  =crtverify.value)
1495
2486
        # New buffer for the fingerprint
1496
2487
        buf = ctypes.create_string_buffer(20)
1497
2488
        buf_len = ctypes.c_size_t()
1498
2489
        # Get the fingerprint from the certificate into the buffer
1499
 
        (gnutls.library.functions
1500
 
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
 
                                             ctypes.byref(buf_len)))
 
2490
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2491
                                           ctypes.byref(buf_len))
1502
2492
        # Deinit the certificate
1503
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2493
        gnutls.openpgp_crt_deinit(crt)
1504
2494
        # Convert the buffer to a Python bytestring
1505
2495
        fpr = ctypes.string_at(buf, buf_len.value)
1506
2496
        # Convert the bytestring to hexadecimal notation
1507
 
        hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
 
2497
        hex_fpr = binascii.hexlify(fpr).upper()
1508
2498
        return hex_fpr
1509
2499
 
1510
2500
 
1511
2501
class MultiprocessingMixIn(object):
1512
2502
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
 
2503
 
1513
2504
    def sub_process_main(self, request, address):
1514
2505
        try:
1515
2506
            self.finish_request(request, address)
1516
 
        except:
 
2507
        except Exception:
1517
2508
            self.handle_error(request, address)
1518
2509
        self.close_request(request)
1519
 
    
 
2510
 
1520
2511
    def process_request(self, request, address):
1521
2512
        """Start a new process to process the request."""
1522
 
        proc = multiprocessing.Process(target = self.sub_process_main,
1523
 
                                       args = (request,
1524
 
                                               address))
 
2513
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2514
                                       args=(request, address))
1525
2515
        proc.start()
1526
2516
        return proc
1527
2517
 
1528
2518
 
1529
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1530
2520
    """ adds a pipe to the MixIn """
 
2521
 
1531
2522
    def process_request(self, request, client_address):
1532
2523
        """Overrides and wraps the original process_request().
1533
 
        
 
2524
 
1534
2525
        This function creates a new pipe in self.pipe
1535
2526
        """
1536
2527
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
1537
 
        
 
2528
 
1538
2529
        proc = MultiprocessingMixIn.process_request(self, request,
1539
2530
                                                    client_address)
1540
2531
        self.child_pipe.close()
1541
2532
        self.add_pipe(parent_pipe, proc)
1542
 
    
 
2533
 
1543
2534
    def add_pipe(self, parent_pipe, proc):
1544
2535
        """Dummy function; override as necessary"""
1545
 
        raise NotImplementedError
 
2536
        raise NotImplementedError()
1546
2537
 
1547
2538
 
1548
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1549
2540
                     socketserver.TCPServer, object):
1550
2541
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
1551
 
    
 
2542
 
1552
2543
    Attributes:
1553
2544
        enabled:        Boolean; whether this server is activated yet
1554
2545
        interface:      None or a network interface name (string)
1555
2546
        use_ipv6:       Boolean; to use IPv6 or not
1556
2547
    """
 
2548
 
1557
2549
    def __init__(self, server_address, RequestHandlerClass,
1558
 
                 interface=None, use_ipv6=True):
 
2550
                 interface=None,
 
2551
                 use_ipv6=True,
 
2552
                 socketfd=None):
 
2553
        """If socketfd is set, use that file descriptor instead of
 
2554
        creating a new one with socket.socket().
 
2555
        """
1559
2556
        self.interface = interface
1560
2557
        if use_ipv6:
1561
2558
            self.address_family = socket.AF_INET6
 
2559
        if socketfd is not None:
 
2560
            # Save the file descriptor
 
2561
            self.socketfd = socketfd
 
2562
            # Save the original socket.socket() function
 
2563
            self.socket_socket = socket.socket
 
2564
 
 
2565
            # To implement --socket, we monkey patch socket.socket.
 
2566
            #
 
2567
            # (When socketserver.TCPServer is a new-style class, we
 
2568
            # could make self.socket into a property instead of monkey
 
2569
            # patching socket.socket.)
 
2570
            #
 
2571
            # Create a one-time-only replacement for socket.socket()
 
2572
            @functools.wraps(socket.socket)
 
2573
            def socket_wrapper(*args, **kwargs):
 
2574
                # Restore original function so subsequent calls are
 
2575
                # not affected.
 
2576
                socket.socket = self.socket_socket
 
2577
                del self.socket_socket
 
2578
                # This time only, return a new socket object from the
 
2579
                # saved file descriptor.
 
2580
                return socket.fromfd(self.socketfd, *args, **kwargs)
 
2581
            # Replace socket.socket() function with wrapper
 
2582
            socket.socket = socket_wrapper
 
2583
        # The socketserver.TCPServer.__init__ will call
 
2584
        # socket.socket(), which might be our replacement,
 
2585
        # socket_wrapper(), if socketfd was set.
1562
2586
        socketserver.TCPServer.__init__(self, server_address,
1563
2587
                                        RequestHandlerClass)
 
2588
 
1564
2589
    def server_bind(self):
1565
2590
        """This overrides the normal server_bind() function
1566
2591
        to bind to an interface if one was specified, and also NOT to
1567
2592
        bind to an address or port if they were not specified."""
 
2593
        global SO_BINDTODEVICE
1568
2594
        if self.interface is not None:
1569
2595
            if SO_BINDTODEVICE is None:
1570
 
                logger.error("SO_BINDTODEVICE does not exist;"
1571
 
                             " cannot bind to interface %s",
1572
 
                             self.interface)
1573
 
            else:
1574
 
                try:
1575
 
                    self.socket.setsockopt(socket.SOL_SOCKET,
1576
 
                                           SO_BINDTODEVICE,
1577
 
                                           str(self.interface
1578
 
                                               + '\0'))
1579
 
                except socket.error as error:
1580
 
                    if error[0] == errno.EPERM:
1581
 
                        logger.error("No permission to"
1582
 
                                     " bind to interface %s",
1583
 
                                     self.interface)
1584
 
                    elif error[0] == errno.ENOPROTOOPT:
1585
 
                        logger.error("SO_BINDTODEVICE not available;"
1586
 
                                     " cannot bind to interface %s",
1587
 
                                     self.interface)
1588
 
                    else:
1589
 
                        raise
 
2596
                # Fall back to a hard-coded value which seems to be
 
2597
                # common enough.
 
2598
                logger.warning("SO_BINDTODEVICE not found, trying 25")
 
2599
                SO_BINDTODEVICE = 25
 
2600
            try:
 
2601
                self.socket.setsockopt(
 
2602
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
 
2603
                    (self.interface + "\0").encode("utf-8"))
 
2604
            except socket.error as error:
 
2605
                if error.errno == errno.EPERM:
 
2606
                    logger.error("No permission to bind to"
 
2607
                                 " interface %s", self.interface)
 
2608
                elif error.errno == errno.ENOPROTOOPT:
 
2609
                    logger.error("SO_BINDTODEVICE not available;"
 
2610
                                 " cannot bind to interface %s",
 
2611
                                 self.interface)
 
2612
                elif error.errno == errno.ENODEV:
 
2613
                    logger.error("Interface %s does not exist,"
 
2614
                                 " cannot bind", self.interface)
 
2615
                else:
 
2616
                    raise
1590
2617
        # Only bind(2) the socket if we really need to.
1591
2618
        if self.server_address[0] or self.server_address[1]:
1592
2619
            if not self.server_address[0]:
1593
2620
                if self.address_family == socket.AF_INET6:
1594
 
                    any_address = "::" # in6addr_any
 
2621
                    any_address = "::"  # in6addr_any
1595
2622
                else:
1596
 
                    any_address = socket.INADDR_ANY
 
2623
                    any_address = "0.0.0.0"  # INADDR_ANY
1597
2624
                self.server_address = (any_address,
1598
2625
                                       self.server_address[1])
1599
2626
            elif not self.server_address[1]:
1600
 
                self.server_address = (self.server_address[0],
1601
 
                                       0)
 
2627
                self.server_address = (self.server_address[0], 0)
1602
2628
#                 if self.interface:
1603
2629
#                     self.server_address = (self.server_address[0],
1604
2630
#                                            0, # port
1610
2636
 
1611
2637
class MandosServer(IPv6_TCPServer):
1612
2638
    """Mandos server.
1613
 
    
 
2639
 
1614
2640
    Attributes:
1615
2641
        clients:        set of Client objects
1616
2642
        gnutls_priority GnuTLS priority string
1617
2643
        use_dbus:       Boolean; to emit D-Bus signals or not
1618
 
    
1619
 
    Assumes a gobject.MainLoop event loop.
 
2644
 
 
2645
    Assumes a GLib.MainLoop event loop.
1620
2646
    """
 
2647
 
1621
2648
    def __init__(self, server_address, RequestHandlerClass,
1622
 
                 interface=None, use_ipv6=True, clients=None,
1623
 
                 gnutls_priority=None, use_dbus=True):
 
2649
                 interface=None,
 
2650
                 use_ipv6=True,
 
2651
                 clients=None,
 
2652
                 gnutls_priority=None,
 
2653
                 use_dbus=True,
 
2654
                 socketfd=None):
1624
2655
        self.enabled = False
1625
2656
        self.clients = clients
1626
2657
        if self.clients is None:
1627
 
            self.clients = set()
 
2658
            self.clients = {}
1628
2659
        self.use_dbus = use_dbus
1629
2660
        self.gnutls_priority = gnutls_priority
1630
2661
        IPv6_TCPServer.__init__(self, server_address,
1631
2662
                                RequestHandlerClass,
1632
 
                                interface = interface,
1633
 
                                use_ipv6 = use_ipv6)
 
2663
                                interface=interface,
 
2664
                                use_ipv6=use_ipv6,
 
2665
                                socketfd=socketfd)
 
2666
 
1634
2667
    def server_activate(self):
1635
2668
        if self.enabled:
1636
2669
            return socketserver.TCPServer.server_activate(self)
1637
 
    
 
2670
 
1638
2671
    def enable(self):
1639
2672
        self.enabled = True
1640
 
    
 
2673
 
1641
2674
    def add_pipe(self, parent_pipe, proc):
1642
2675
        # Call "handle_ipc" for both data and EOF events
1643
 
        gobject.io_add_watch(parent_pipe.fileno(),
1644
 
                             gobject.IO_IN | gobject.IO_HUP,
1645
 
                             functools.partial(self.handle_ipc,
1646
 
                                               parent_pipe =
1647
 
                                               parent_pipe,
1648
 
                                               proc = proc))
1649
 
    
1650
 
    def handle_ipc(self, source, condition, parent_pipe=None,
1651
 
                   proc = None, client_object=None):
1652
 
        condition_names = {
1653
 
            gobject.IO_IN: "IN",   # There is data to read.
1654
 
            gobject.IO_OUT: "OUT", # Data can be written (without
1655
 
                                    # blocking).
1656
 
            gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
 
            gobject.IO_ERR: "ERR", # Error condition.
1658
 
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
1659
 
                                    # broken, usually for pipes and
1660
 
                                    # sockets).
1661
 
            }
1662
 
        conditions_string = ' | '.join(name
1663
 
                                       for cond, name in
1664
 
                                       condition_names.iteritems()
1665
 
                                       if cond & condition)
 
2676
        GLib.io_add_watch(
 
2677
            parent_pipe.fileno(),
 
2678
            GLib.IO_IN | GLib.IO_HUP,
 
2679
            functools.partial(self.handle_ipc,
 
2680
                              parent_pipe=parent_pipe,
 
2681
                              proc=proc))
 
2682
 
 
2683
    def handle_ipc(self, source, condition,
 
2684
                   parent_pipe=None,
 
2685
                   proc=None,
 
2686
                   client_object=None):
1666
2687
        # error, or the other end of multiprocessing.Pipe has closed
1667
 
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
 
2688
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
1668
2689
            # Wait for other process to exit
1669
2690
            proc.join()
1670
2691
            return False
1671
 
        
 
2692
 
1672
2693
        # Read a request from the child
1673
2694
        request = parent_pipe.recv()
1674
2695
        command = request[0]
1675
 
        
 
2696
 
1676
2697
        if command == 'init':
1677
 
            fpr = request[1]
1678
 
            address = request[2]
1679
 
            
1680
 
            for c in self.clients:
1681
 
                if c.fingerprint == fpr:
 
2698
            key_id = request[1].decode("ascii")
 
2699
            fpr = request[2].decode("ascii")
 
2700
            address = request[3]
 
2701
 
 
2702
            for c in self.clients.values():
 
2703
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
 
2704
                    continue
 
2705
                if key_id and c.key_id == key_id:
 
2706
                    client = c
 
2707
                    break
 
2708
                if fpr and c.fingerprint == fpr:
1682
2709
                    client = c
1683
2710
                    break
1684
2711
            else:
1685
 
                logger.info("Client not found for fingerprint: %s, ad"
1686
 
                            "dress: %s", fpr, address)
 
2712
                logger.info("Client not found for key ID: %s, address"
 
2713
                            ": %s", key_id or fpr, address)
1687
2714
                if self.use_dbus:
1688
2715
                    # Emit D-Bus signal
1689
 
                    mandos_dbus_service.ClientNotFound(fpr,
 
2716
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
1690
2717
                                                       address[0])
1691
2718
                parent_pipe.send(False)
1692
2719
                return False
1693
 
            
1694
 
            gobject.io_add_watch(parent_pipe.fileno(),
1695
 
                                 gobject.IO_IN | gobject.IO_HUP,
1696
 
                                 functools.partial(self.handle_ipc,
1697
 
                                                   parent_pipe =
1698
 
                                                   parent_pipe,
1699
 
                                                   proc = proc,
1700
 
                                                   client_object =
1701
 
                                                   client))
 
2720
 
 
2721
            GLib.io_add_watch(
 
2722
                parent_pipe.fileno(),
 
2723
                GLib.IO_IN | GLib.IO_HUP,
 
2724
                functools.partial(self.handle_ipc,
 
2725
                                  parent_pipe=parent_pipe,
 
2726
                                  proc=proc,
 
2727
                                  client_object=client))
1702
2728
            parent_pipe.send(True)
1703
2729
            # remove the old hook in favor of the new above hook on
1704
2730
            # same fileno
1707
2733
            funcname = request[1]
1708
2734
            args = request[2]
1709
2735
            kwargs = request[3]
1710
 
            
 
2736
 
1711
2737
            parent_pipe.send(('data', getattr(client_object,
1712
2738
                                              funcname)(*args,
1713
 
                                                         **kwargs)))
1714
 
        
 
2739
                                                        **kwargs)))
 
2740
 
1715
2741
        if command == 'getattr':
1716
2742
            attrname = request[1]
1717
 
            if callable(client_object.__getattribute__(attrname)):
1718
 
                parent_pipe.send(('function',))
 
2743
            if isinstance(client_object.__getattribute__(attrname),
 
2744
                          collections.Callable):
 
2745
                parent_pipe.send(('function', ))
1719
2746
            else:
1720
 
                parent_pipe.send(('data', client_object
1721
 
                                  .__getattribute__(attrname)))
1722
 
        
 
2747
                parent_pipe.send((
 
2748
                    'data', client_object.__getattribute__(attrname)))
 
2749
 
1723
2750
        if command == 'setattr':
1724
2751
            attrname = request[1]
1725
2752
            value = request[2]
1726
2753
            setattr(client_object, attrname, value)
1727
 
        
 
2754
 
1728
2755
        return True
1729
2756
 
1730
2757
 
 
2758
def rfc3339_duration_to_delta(duration):
 
2759
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
2760
 
 
2761
    >>> rfc3339_duration_to_delta("P7D")
 
2762
    datetime.timedelta(7)
 
2763
    >>> rfc3339_duration_to_delta("PT60S")
 
2764
    datetime.timedelta(0, 60)
 
2765
    >>> rfc3339_duration_to_delta("PT60M")
 
2766
    datetime.timedelta(0, 3600)
 
2767
    >>> rfc3339_duration_to_delta("PT24H")
 
2768
    datetime.timedelta(1)
 
2769
    >>> rfc3339_duration_to_delta("P1W")
 
2770
    datetime.timedelta(7)
 
2771
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2772
    datetime.timedelta(0, 330)
 
2773
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2774
    datetime.timedelta(1, 200)
 
2775
    """
 
2776
 
 
2777
    # Parsing an RFC 3339 duration with regular expressions is not
 
2778
    # possible - there would have to be multiple places for the same
 
2779
    # values, like seconds.  The current code, while more esoteric, is
 
2780
    # cleaner without depending on a parsing library.  If Python had a
 
2781
    # built-in library for parsing we would use it, but we'd like to
 
2782
    # avoid excessive use of external libraries.
 
2783
 
 
2784
    # New type for defining tokens, syntax, and semantics all-in-one
 
2785
    Token = collections.namedtuple("Token", (
 
2786
        "regexp",  # To match token; if "value" is not None, must have
 
2787
                   # a "group" containing digits
 
2788
        "value",   # datetime.timedelta or None
 
2789
        "followers"))           # Tokens valid after this token
 
2790
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
2791
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
2792
    token_end = Token(re.compile(r"$"), None, frozenset())
 
2793
    token_second = Token(re.compile(r"(\d+)S"),
 
2794
                         datetime.timedelta(seconds=1),
 
2795
                         frozenset((token_end, )))
 
2796
    token_minute = Token(re.compile(r"(\d+)M"),
 
2797
                         datetime.timedelta(minutes=1),
 
2798
                         frozenset((token_second, token_end)))
 
2799
    token_hour = Token(re.compile(r"(\d+)H"),
 
2800
                       datetime.timedelta(hours=1),
 
2801
                       frozenset((token_minute, token_end)))
 
2802
    token_time = Token(re.compile(r"T"),
 
2803
                       None,
 
2804
                       frozenset((token_hour, token_minute,
 
2805
                                  token_second)))
 
2806
    token_day = Token(re.compile(r"(\d+)D"),
 
2807
                      datetime.timedelta(days=1),
 
2808
                      frozenset((token_time, token_end)))
 
2809
    token_month = Token(re.compile(r"(\d+)M"),
 
2810
                        datetime.timedelta(weeks=4),
 
2811
                        frozenset((token_day, token_end)))
 
2812
    token_year = Token(re.compile(r"(\d+)Y"),
 
2813
                       datetime.timedelta(weeks=52),
 
2814
                       frozenset((token_month, token_end)))
 
2815
    token_week = Token(re.compile(r"(\d+)W"),
 
2816
                       datetime.timedelta(weeks=1),
 
2817
                       frozenset((token_end, )))
 
2818
    token_duration = Token(re.compile(r"P"), None,
 
2819
                           frozenset((token_year, token_month,
 
2820
                                      token_day, token_time,
 
2821
                                      token_week)))
 
2822
    # Define starting values:
 
2823
    # Value so far
 
2824
    value = datetime.timedelta()
 
2825
    found_token = None
 
2826
    # Following valid tokens
 
2827
    followers = frozenset((token_duration, ))
 
2828
    # String left to parse
 
2829
    s = duration
 
2830
    # Loop until end token is found
 
2831
    while found_token is not token_end:
 
2832
        # Search for any currently valid tokens
 
2833
        for token in followers:
 
2834
            match = token.regexp.match(s)
 
2835
            if match is not None:
 
2836
                # Token found
 
2837
                if token.value is not None:
 
2838
                    # Value found, parse digits
 
2839
                    factor = int(match.group(1), 10)
 
2840
                    # Add to value so far
 
2841
                    value += factor * token.value
 
2842
                # Strip token from string
 
2843
                s = token.regexp.sub("", s, 1)
 
2844
                # Go to found token
 
2845
                found_token = token
 
2846
                # Set valid next tokens
 
2847
                followers = found_token.followers
 
2848
                break
 
2849
        else:
 
2850
            # No currently valid tokens were found
 
2851
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
2852
                             .format(duration))
 
2853
    # End token found
 
2854
    return value
 
2855
 
 
2856
 
1731
2857
def string_to_delta(interval):
1732
2858
    """Parse a string and return a datetime.timedelta
1733
 
    
 
2859
 
1734
2860
    >>> string_to_delta('7d')
1735
2861
    datetime.timedelta(7)
1736
2862
    >>> string_to_delta('60s')
1744
2870
    >>> string_to_delta('5m 30s')
1745
2871
    datetime.timedelta(0, 330)
1746
2872
    """
 
2873
 
 
2874
    try:
 
2875
        return rfc3339_duration_to_delta(interval)
 
2876
    except ValueError:
 
2877
        pass
 
2878
 
1747
2879
    timevalue = datetime.timedelta(0)
1748
2880
    for s in interval.split():
1749
2881
        try:
1750
 
            suffix = unicode(s[-1])
 
2882
            suffix = s[-1]
1751
2883
            value = int(s[:-1])
1752
2884
            if suffix == "d":
1753
2885
                delta = datetime.timedelta(value)
1760
2892
            elif suffix == "w":
1761
2893
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1762
2894
            else:
1763
 
                raise ValueError("Unknown suffix %r" % suffix)
1764
 
        except (ValueError, IndexError) as e:
 
2895
                raise ValueError("Unknown suffix {!r}".format(suffix))
 
2896
        except IndexError as e:
1765
2897
            raise ValueError(*(e.args))
1766
2898
        timevalue += delta
1767
2899
    return timevalue
1768
2900
 
1769
2901
 
1770
 
def if_nametoindex(interface):
1771
 
    """Call the C function if_nametoindex(), or equivalent
1772
 
    
1773
 
    Note: This function cannot accept a unicode string."""
1774
 
    global if_nametoindex
1775
 
    try:
1776
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
1777
 
                          (ctypes.util.find_library("c"))
1778
 
                          .if_nametoindex)
1779
 
    except (OSError, AttributeError):
1780
 
        logger.warning("Doing if_nametoindex the hard way")
1781
 
        def if_nametoindex(interface):
1782
 
            "Get an interface index the hard way, i.e. using fcntl()"
1783
 
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
1784
 
            with contextlib.closing(socket.socket()) as s:
1785
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
 
                                    struct.pack(str("16s16x"),
1787
 
                                                interface))
1788
 
            interface_index = struct.unpack(str("I"),
1789
 
                                            ifreq[16:20])[0]
1790
 
            return interface_index
1791
 
    return if_nametoindex(interface)
1792
 
 
1793
 
 
1794
 
def daemon(nochdir = False, noclose = False):
 
2902
def daemon(nochdir=False, noclose=False):
1795
2903
    """See daemon(3).  Standard BSD Unix function.
1796
 
    
 
2904
 
1797
2905
    This should really exist as os.daemon, but it doesn't (yet)."""
1798
2906
    if os.fork():
1799
2907
        sys.exit()
1804
2912
        sys.exit()
1805
2913
    if not noclose:
1806
2914
        # Close all standard open file descriptors
1807
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
2915
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1808
2916
        if not stat.S_ISCHR(os.fstat(null).st_mode):
1809
2917
            raise OSError(errno.ENODEV,
1810
 
                          "%s not a character device"
1811
 
                          % os.path.devnull)
 
2918
                          "{} not a character device"
 
2919
                          .format(os.devnull))
1812
2920
        os.dup2(null, sys.stdin.fileno())
1813
2921
        os.dup2(null, sys.stdout.fileno())
1814
2922
        os.dup2(null, sys.stderr.fileno())
1817
2925
 
1818
2926
 
1819
2927
def main():
1820
 
    
 
2928
 
1821
2929
    ##################################################################
1822
2930
    # Parsing of options, both command line and config file
1823
 
    
 
2931
 
1824
2932
    parser = argparse.ArgumentParser()
1825
2933
    parser.add_argument("-v", "--version", action="version",
1826
 
                        version = "%%(prog)s %s" % version,
 
2934
                        version="%(prog)s {}".format(version),
1827
2935
                        help="show version number and exit")
1828
2936
    parser.add_argument("-i", "--interface", metavar="IF",
1829
2937
                        help="Bind to interface IF")
1835
2943
                        help="Run self-test")
1836
2944
    parser.add_argument("--debug", action="store_true",
1837
2945
                        help="Debug mode; run in foreground and log"
1838
 
                        " to terminal")
 
2946
                        " to terminal", default=None)
1839
2947
    parser.add_argument("--debuglevel", metavar="LEVEL",
1840
2948
                        help="Debug level for stdout output")
1841
2949
    parser.add_argument("--priority", help="GnuTLS"
1848
2956
                        " files")
1849
2957
    parser.add_argument("--no-dbus", action="store_false",
1850
2958
                        dest="use_dbus", help="Do not provide D-Bus"
1851
 
                        " system bus interface")
 
2959
                        " system bus interface", default=None)
1852
2960
    parser.add_argument("--no-ipv6", action="store_false",
1853
 
                        dest="use_ipv6", help="Do not use IPv6")
 
2961
                        dest="use_ipv6", help="Do not use IPv6",
 
2962
                        default=None)
 
2963
    parser.add_argument("--no-restore", action="store_false",
 
2964
                        dest="restore", help="Do not restore stored"
 
2965
                        " state", default=None)
 
2966
    parser.add_argument("--socket", type=int,
 
2967
                        help="Specify a file descriptor to a network"
 
2968
                        " socket to use instead of creating one")
 
2969
    parser.add_argument("--statedir", metavar="DIR",
 
2970
                        help="Directory to save/restore state in")
 
2971
    parser.add_argument("--foreground", action="store_true",
 
2972
                        help="Run in foreground", default=None)
 
2973
    parser.add_argument("--no-zeroconf", action="store_false",
 
2974
                        dest="zeroconf", help="Do not use Zeroconf",
 
2975
                        default=None)
 
2976
 
1854
2977
    options = parser.parse_args()
1855
 
    
 
2978
 
1856
2979
    if options.check:
1857
2980
        import doctest
1858
 
        doctest.testmod()
1859
 
        sys.exit()
1860
 
    
 
2981
        fail_count, test_count = doctest.testmod()
 
2982
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2983
 
1861
2984
    # Default values for config file for server-global settings
1862
 
    server_defaults = { "interface": "",
1863
 
                        "address": "",
1864
 
                        "port": "",
1865
 
                        "debug": "False",
1866
 
                        "priority":
1867
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
 
                        "servicename": "Mandos",
1869
 
                        "use_dbus": "True",
1870
 
                        "use_ipv6": "True",
1871
 
                        "debuglevel": "",
1872
 
                        }
1873
 
    
 
2985
    if gnutls.has_rawpk:
 
2986
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
 
2987
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
 
2988
    else:
 
2989
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
 
2990
                    ":+SIGN-DSA-SHA256")
 
2991
    server_defaults = {"interface": "",
 
2992
                       "address": "",
 
2993
                       "port": "",
 
2994
                       "debug": "False",
 
2995
                       "priority": priority,
 
2996
                       "servicename": "Mandos",
 
2997
                       "use_dbus": "True",
 
2998
                       "use_ipv6": "True",
 
2999
                       "debuglevel": "",
 
3000
                       "restore": "True",
 
3001
                       "socket": "",
 
3002
                       "statedir": "/var/lib/mandos",
 
3003
                       "foreground": "False",
 
3004
                       "zeroconf": "True",
 
3005
                       }
 
3006
    del priority
 
3007
 
1874
3008
    # Parse config file for server-global settings
1875
3009
    server_config = configparser.SafeConfigParser(server_defaults)
1876
3010
    del server_defaults
1877
 
    server_config.read(os.path.join(options.configdir,
1878
 
                                    "mandos.conf"))
 
3011
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
1879
3012
    # Convert the SafeConfigParser object to a dict
1880
3013
    server_settings = server_config.defaults()
1881
3014
    # Use the appropriate methods on the non-string config options
1882
 
    for option in ("debug", "use_dbus", "use_ipv6"):
 
3015
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3016
                   "foreground", "zeroconf"):
1883
3017
        server_settings[option] = server_config.getboolean("DEFAULT",
1884
3018
                                                           option)
1885
3019
    if server_settings["port"]:
1886
3020
        server_settings["port"] = server_config.getint("DEFAULT",
1887
3021
                                                       "port")
 
3022
    if server_settings["socket"]:
 
3023
        server_settings["socket"] = server_config.getint("DEFAULT",
 
3024
                                                         "socket")
 
3025
        # Later, stdin will, and stdout and stderr might, be dup'ed
 
3026
        # over with an opened os.devnull.  But we don't want this to
 
3027
        # happen with a supplied network socket.
 
3028
        if 0 <= server_settings["socket"] <= 2:
 
3029
            server_settings["socket"] = os.dup(server_settings
 
3030
                                               ["socket"])
1888
3031
    del server_config
1889
 
    
 
3032
 
1890
3033
    # Override the settings from the config file with command line
1891
3034
    # options, if set.
1892
3035
    for option in ("interface", "address", "port", "debug",
1893
 
                   "priority", "servicename", "configdir",
1894
 
                   "use_dbus", "use_ipv6", "debuglevel"):
 
3036
                   "priority", "servicename", "configdir", "use_dbus",
 
3037
                   "use_ipv6", "debuglevel", "restore", "statedir",
 
3038
                   "socket", "foreground", "zeroconf"):
1895
3039
        value = getattr(options, option)
1896
3040
        if value is not None:
1897
3041
            server_settings[option] = value
1898
3042
    del options
1899
3043
    # Force all strings to be unicode
1900
3044
    for option in server_settings.keys():
1901
 
        if type(server_settings[option]) is str:
1902
 
            server_settings[option] = unicode(server_settings[option])
 
3045
        if isinstance(server_settings[option], bytes):
 
3046
            server_settings[option] = (server_settings[option]
 
3047
                                       .decode("utf-8"))
 
3048
    # Force all boolean options to be boolean
 
3049
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3050
                   "foreground", "zeroconf"):
 
3051
        server_settings[option] = bool(server_settings[option])
 
3052
    # Debug implies foreground
 
3053
    if server_settings["debug"]:
 
3054
        server_settings["foreground"] = True
1903
3055
    # Now we have our good server settings in "server_settings"
1904
 
    
 
3056
 
1905
3057
    ##################################################################
1906
 
    
 
3058
 
 
3059
    if (not server_settings["zeroconf"]
 
3060
        and not (server_settings["port"]
 
3061
                 or server_settings["socket"] != "")):
 
3062
        parser.error("Needs port or socket to work without Zeroconf")
 
3063
 
1907
3064
    # For convenience
1908
3065
    debug = server_settings["debug"]
1909
3066
    debuglevel = server_settings["debuglevel"]
1910
3067
    use_dbus = server_settings["use_dbus"]
1911
3068
    use_ipv6 = server_settings["use_ipv6"]
1912
 
    
 
3069
    stored_state_path = os.path.join(server_settings["statedir"],
 
3070
                                     stored_state_file)
 
3071
    foreground = server_settings["foreground"]
 
3072
    zeroconf = server_settings["zeroconf"]
 
3073
 
 
3074
    if debug:
 
3075
        initlogger(debug, logging.DEBUG)
 
3076
    else:
 
3077
        if not debuglevel:
 
3078
            initlogger(debug)
 
3079
        else:
 
3080
            level = getattr(logging, debuglevel.upper())
 
3081
            initlogger(debug, level)
 
3082
 
1913
3083
    if server_settings["servicename"] != "Mandos":
1914
 
        syslogger.setFormatter(logging.Formatter
1915
 
                               ('Mandos (%s) [%%(process)d]:'
1916
 
                                ' %%(levelname)s: %%(message)s'
1917
 
                                % server_settings["servicename"]))
1918
 
    
 
3084
        syslogger.setFormatter(
 
3085
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
3086
                              ' %(levelname)s: %(message)s'.format(
 
3087
                                  server_settings["servicename"])))
 
3088
 
1919
3089
    # Parse config file with clients
1920
 
    client_defaults = { "timeout": "5m",
1921
 
                        "extended_timeout": "15m",
1922
 
                        "interval": "2m",
1923
 
                        "checker": "fping -q -- %%(host)s",
1924
 
                        "host": "",
1925
 
                        "approval_delay": "0s",
1926
 
                        "approval_duration": "1s",
1927
 
                        }
1928
 
    client_config = configparser.SafeConfigParser(client_defaults)
 
3090
    client_config = configparser.SafeConfigParser(Client
 
3091
                                                  .client_defaults)
1929
3092
    client_config.read(os.path.join(server_settings["configdir"],
1930
3093
                                    "clients.conf"))
1931
 
    
 
3094
 
1932
3095
    global mandos_dbus_service
1933
3096
    mandos_dbus_service = None
1934
 
    
1935
 
    tcp_server = MandosServer((server_settings["address"],
1936
 
                               server_settings["port"]),
1937
 
                              ClientHandler,
1938
 
                              interface=(server_settings["interface"]
1939
 
                                         or None),
1940
 
                              use_ipv6=use_ipv6,
1941
 
                              gnutls_priority=
1942
 
                              server_settings["priority"],
1943
 
                              use_dbus=use_dbus)
1944
 
    if not debug:
1945
 
        pidfilename = "/var/run/mandos.pid"
1946
 
        try:
1947
 
            pidfile = open(pidfilename, "w")
1948
 
        except IOError:
1949
 
            logger.error("Could not open file %r", pidfilename)
1950
 
    
1951
 
    try:
1952
 
        uid = pwd.getpwnam("_mandos").pw_uid
1953
 
        gid = pwd.getpwnam("_mandos").pw_gid
1954
 
    except KeyError:
1955
 
        try:
1956
 
            uid = pwd.getpwnam("mandos").pw_uid
1957
 
            gid = pwd.getpwnam("mandos").pw_gid
 
3097
 
 
3098
    socketfd = None
 
3099
    if server_settings["socket"] != "":
 
3100
        socketfd = server_settings["socket"]
 
3101
    tcp_server = MandosServer(
 
3102
        (server_settings["address"], server_settings["port"]),
 
3103
        ClientHandler,
 
3104
        interface=(server_settings["interface"] or None),
 
3105
        use_ipv6=use_ipv6,
 
3106
        gnutls_priority=server_settings["priority"],
 
3107
        use_dbus=use_dbus,
 
3108
        socketfd=socketfd)
 
3109
    if not foreground:
 
3110
        pidfilename = "/run/mandos.pid"
 
3111
        if not os.path.isdir("/run/."):
 
3112
            pidfilename = "/var/run/mandos.pid"
 
3113
        pidfile = None
 
3114
        try:
 
3115
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
 
3116
        except IOError as e:
 
3117
            logger.error("Could not open file %r", pidfilename,
 
3118
                         exc_info=e)
 
3119
 
 
3120
    for name, group in (("_mandos", "_mandos"),
 
3121
                        ("mandos", "mandos"),
 
3122
                        ("nobody", "nogroup")):
 
3123
        try:
 
3124
            uid = pwd.getpwnam(name).pw_uid
 
3125
            gid = pwd.getpwnam(group).pw_gid
 
3126
            break
1958
3127
        except KeyError:
1959
 
            try:
1960
 
                uid = pwd.getpwnam("nobody").pw_uid
1961
 
                gid = pwd.getpwnam("nobody").pw_gid
1962
 
            except KeyError:
1963
 
                uid = 65534
1964
 
                gid = 65534
 
3128
            continue
 
3129
    else:
 
3130
        uid = 65534
 
3131
        gid = 65534
1965
3132
    try:
1966
3133
        os.setgid(gid)
1967
3134
        os.setuid(uid)
 
3135
        if debug:
 
3136
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3137
                                                             gid))
1968
3138
    except OSError as error:
1969
 
        if error[0] != errno.EPERM:
1970
 
            raise error
1971
 
    
1972
 
    if not debug and not debuglevel:
1973
 
        syslogger.setLevel(logging.WARNING)
1974
 
        console.setLevel(logging.WARNING)
1975
 
    if debuglevel:
1976
 
        level = getattr(logging, debuglevel.upper())
1977
 
        syslogger.setLevel(level)
1978
 
        console.setLevel(level)
1979
 
    
 
3139
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3140
                       .format(uid, gid, os.strerror(error.errno)))
 
3141
        if error.errno != errno.EPERM:
 
3142
            raise
 
3143
 
1980
3144
    if debug:
1981
3145
        # Enable all possible GnuTLS debugging
1982
 
        
 
3146
 
1983
3147
        # "Use a log level over 10 to enable all debugging options."
1984
3148
        # - GnuTLS manual
1985
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
1986
 
        
1987
 
        @gnutls.library.types.gnutls_log_func
 
3149
        gnutls.global_set_log_level(11)
 
3150
 
 
3151
        @gnutls.log_func
1988
3152
        def debug_gnutls(level, string):
1989
3153
            logger.debug("GnuTLS: %s", string[:-1])
1990
 
        
1991
 
        (gnutls.library.functions
1992
 
         .gnutls_global_set_log_function(debug_gnutls))
1993
 
        
 
3154
 
 
3155
        gnutls.global_set_log_function(debug_gnutls)
 
3156
 
1994
3157
        # Redirect stdin so all checkers get /dev/null
1995
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
3158
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1996
3159
        os.dup2(null, sys.stdin.fileno())
1997
3160
        if null > 2:
1998
3161
            os.close(null)
1999
 
    else:
2000
 
        # No console logging
2001
 
        logger.removeHandler(console)
2002
 
    
 
3162
 
2003
3163
    # Need to fork before connecting to D-Bus
2004
 
    if not debug:
 
3164
    if not foreground:
2005
3165
        # Close all input and output, do double fork, etc.
2006
3166
        daemon()
2007
 
    
 
3167
 
 
3168
    # multiprocessing will use threads, so before we use GLib we need
 
3169
    # to inform GLib that threads will be used.
 
3170
    GLib.threads_init()
 
3171
 
2008
3172
    global main_loop
2009
3173
    # From the Avahi example code
2010
 
    DBusGMainLoop(set_as_default=True )
2011
 
    main_loop = gobject.MainLoop()
 
3174
    DBusGMainLoop(set_as_default=True)
 
3175
    main_loop = GLib.MainLoop()
2012
3176
    bus = dbus.SystemBus()
2013
3177
    # End of Avahi example code
2014
3178
    if use_dbus:
2015
3179
        try:
2016
3180
            bus_name = dbus.service.BusName("se.recompile.Mandos",
2017
 
                                            bus, do_not_queue=True)
2018
 
            old_bus_name = (dbus.service.BusName
2019
 
                            ("se.bsnet.fukt.Mandos", bus,
2020
 
                             do_not_queue=True))
2021
 
        except dbus.exceptions.NameExistsException as e:
2022
 
            logger.error(unicode(e) + ", disabling D-Bus")
 
3181
                                            bus,
 
3182
                                            do_not_queue=True)
 
3183
            old_bus_name = dbus.service.BusName(
 
3184
                "se.bsnet.fukt.Mandos", bus,
 
3185
                do_not_queue=True)
 
3186
        except dbus.exceptions.DBusException as e:
 
3187
            logger.error("Disabling D-Bus:", exc_info=e)
2023
3188
            use_dbus = False
2024
3189
            server_settings["use_dbus"] = False
2025
3190
            tcp_server.use_dbus = False
2026
 
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
 
    service = AvahiService(name = server_settings["servicename"],
2028
 
                           servicetype = "_mandos._tcp",
2029
 
                           protocol = protocol, bus = bus)
2030
 
    if server_settings["interface"]:
2031
 
        service.interface = (if_nametoindex
2032
 
                             (str(server_settings["interface"])))
2033
 
    
 
3191
    if zeroconf:
 
3192
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
3193
        service = AvahiServiceToSyslog(
 
3194
            name=server_settings["servicename"],
 
3195
            servicetype="_mandos._tcp",
 
3196
            protocol=protocol,
 
3197
            bus=bus)
 
3198
        if server_settings["interface"]:
 
3199
            service.interface = if_nametoindex(
 
3200
                server_settings["interface"].encode("utf-8"))
 
3201
 
2034
3202
    global multiprocessing_manager
2035
3203
    multiprocessing_manager = multiprocessing.Manager()
2036
 
    
 
3204
 
2037
3205
    client_class = Client
2038
3206
    if use_dbus:
2039
 
        client_class = functools.partial(ClientDBusTransitional,
2040
 
                                         bus = bus)
2041
 
    def client_config_items(config, section):
2042
 
        special_settings = {
2043
 
            "approved_by_default":
2044
 
                lambda: config.getboolean(section,
2045
 
                                          "approved_by_default"),
2046
 
            }
2047
 
        for name, value in config.items(section):
 
3207
        client_class = functools.partial(ClientDBus, bus=bus)
 
3208
 
 
3209
    client_settings = Client.config_parser(client_config)
 
3210
    old_client_settings = {}
 
3211
    clients_data = {}
 
3212
 
 
3213
    # This is used to redirect stdout and stderr for checker processes
 
3214
    global wnull
 
3215
    wnull = open(os.devnull, "w")  # A writable /dev/null
 
3216
    # Only used if server is running in foreground but not in debug
 
3217
    # mode
 
3218
    if debug or not foreground:
 
3219
        wnull.close()
 
3220
 
 
3221
    # Get client data and settings from last running state.
 
3222
    if server_settings["restore"]:
 
3223
        try:
 
3224
            with open(stored_state_path, "rb") as stored_state:
 
3225
                if sys.version_info.major == 2:
 
3226
                    clients_data, old_client_settings = pickle.load(
 
3227
                        stored_state)
 
3228
                else:
 
3229
                    bytes_clients_data, bytes_old_client_settings = (
 
3230
                        pickle.load(stored_state, encoding="bytes"))
 
3231
                    #   Fix bytes to strings
 
3232
                    #  clients_data
 
3233
                    # .keys()
 
3234
                    clients_data = {(key.decode("utf-8")
 
3235
                                     if isinstance(key, bytes)
 
3236
                                     else key): value
 
3237
                                    for key, value in
 
3238
                                    bytes_clients_data.items()}
 
3239
                    del bytes_clients_data
 
3240
                    for key in clients_data:
 
3241
                        value = {(k.decode("utf-8")
 
3242
                                  if isinstance(k, bytes) else k): v
 
3243
                                 for k, v in
 
3244
                                 clients_data[key].items()}
 
3245
                        clients_data[key] = value
 
3246
                        # .client_structure
 
3247
                        value["client_structure"] = [
 
3248
                            (s.decode("utf-8")
 
3249
                             if isinstance(s, bytes)
 
3250
                             else s) for s in
 
3251
                            value["client_structure"]]
 
3252
                        # .name & .host
 
3253
                        for k in ("name", "host"):
 
3254
                            if isinstance(value[k], bytes):
 
3255
                                value[k] = value[k].decode("utf-8")
 
3256
                        if not value.has_key("key_id"):
 
3257
                            value["key_id"] = ""
 
3258
                        elif not value.has_key("fingerprint"):
 
3259
                            value["fingerprint"] = ""
 
3260
                    #  old_client_settings
 
3261
                    # .keys()
 
3262
                    old_client_settings = {
 
3263
                        (key.decode("utf-8")
 
3264
                         if isinstance(key, bytes)
 
3265
                         else key): value
 
3266
                        for key, value in
 
3267
                        bytes_old_client_settings.items()}
 
3268
                    del bytes_old_client_settings
 
3269
                    # .host
 
3270
                    for value in old_client_settings.values():
 
3271
                        if isinstance(value["host"], bytes):
 
3272
                            value["host"] = (value["host"]
 
3273
                                             .decode("utf-8"))
 
3274
            os.remove(stored_state_path)
 
3275
        except IOError as e:
 
3276
            if e.errno == errno.ENOENT:
 
3277
                logger.warning("Could not load persistent state:"
 
3278
                               " {}".format(os.strerror(e.errno)))
 
3279
            else:
 
3280
                logger.critical("Could not load persistent state:",
 
3281
                                exc_info=e)
 
3282
                raise
 
3283
        except EOFError as e:
 
3284
            logger.warning("Could not load persistent state: "
 
3285
                           "EOFError:",
 
3286
                           exc_info=e)
 
3287
 
 
3288
    with PGPEngine() as pgp:
 
3289
        for client_name, client in clients_data.items():
 
3290
            # Skip removed clients
 
3291
            if client_name not in client_settings:
 
3292
                continue
 
3293
 
 
3294
            # Decide which value to use after restoring saved state.
 
3295
            # We have three different values: Old config file,
 
3296
            # new config file, and saved state.
 
3297
            # New config value takes precedence if it differs from old
 
3298
            # config value, otherwise use saved state.
 
3299
            for name, value in client_settings[client_name].items():
 
3300
                try:
 
3301
                    # For each value in new config, check if it
 
3302
                    # differs from the old config value (Except for
 
3303
                    # the "secret" attribute)
 
3304
                    if (name != "secret"
 
3305
                        and (value !=
 
3306
                             old_client_settings[client_name][name])):
 
3307
                        client[name] = value
 
3308
                except KeyError:
 
3309
                    pass
 
3310
 
 
3311
            # Clients who has passed its expire date can still be
 
3312
            # enabled if its last checker was successful.  A Client
 
3313
            # whose checker succeeded before we stored its state is
 
3314
            # assumed to have successfully run all checkers during
 
3315
            # downtime.
 
3316
            if client["enabled"]:
 
3317
                if datetime.datetime.utcnow() >= client["expires"]:
 
3318
                    if not client["last_checked_ok"]:
 
3319
                        logger.warning(
 
3320
                            "disabling client {} - Client never "
 
3321
                            "performed a successful checker".format(
 
3322
                                client_name))
 
3323
                        client["enabled"] = False
 
3324
                    elif client["last_checker_status"] != 0:
 
3325
                        logger.warning(
 
3326
                            "disabling client {} - Client last"
 
3327
                            " checker failed with error code"
 
3328
                            " {}".format(
 
3329
                                client_name,
 
3330
                                client["last_checker_status"]))
 
3331
                        client["enabled"] = False
 
3332
                    else:
 
3333
                        client["expires"] = (
 
3334
                            datetime.datetime.utcnow()
 
3335
                            + client["timeout"])
 
3336
                        logger.debug("Last checker succeeded,"
 
3337
                                     " keeping {} enabled".format(
 
3338
                                         client_name))
2048
3339
            try:
2049
 
                yield (name, special_settings[name]())
2050
 
            except KeyError:
2051
 
                yield (name, value)
2052
 
    
2053
 
    tcp_server.clients.update(set(
2054
 
            client_class(name = section,
2055
 
                         config= dict(client_config_items(
2056
 
                        client_config, section)))
2057
 
            for section in client_config.sections()))
 
3340
                client["secret"] = pgp.decrypt(
 
3341
                    client["encrypted_secret"],
 
3342
                    client_settings[client_name]["secret"])
 
3343
            except PGPError:
 
3344
                # If decryption fails, we use secret from new settings
 
3345
                logger.debug("Failed to decrypt {} old secret".format(
 
3346
                    client_name))
 
3347
                client["secret"] = (client_settings[client_name]
 
3348
                                    ["secret"])
 
3349
 
 
3350
    # Add/remove clients based on new changes made to config
 
3351
    for client_name in (set(old_client_settings)
 
3352
                        - set(client_settings)):
 
3353
        del clients_data[client_name]
 
3354
    for client_name in (set(client_settings)
 
3355
                        - set(old_client_settings)):
 
3356
        clients_data[client_name] = client_settings[client_name]
 
3357
 
 
3358
    # Create all client objects
 
3359
    for client_name, client in clients_data.items():
 
3360
        tcp_server.clients[client_name] = client_class(
 
3361
            name=client_name,
 
3362
            settings=client,
 
3363
            server_settings=server_settings)
 
3364
 
2058
3365
    if not tcp_server.clients:
2059
3366
        logger.warning("No clients defined")
2060
 
        
2061
 
    if not debug:
2062
 
        try:
2063
 
            with pidfile:
2064
 
                pid = os.getpid()
2065
 
                pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
 
            del pidfile
2067
 
        except IOError:
2068
 
            logger.error("Could not write to file %r with PID %d",
2069
 
                         pidfilename, pid)
2070
 
        except NameError:
2071
 
            # "pidfile" was never created
2072
 
            pass
 
3367
 
 
3368
    if not foreground:
 
3369
        if pidfile is not None:
 
3370
            pid = os.getpid()
 
3371
            try:
 
3372
                with pidfile:
 
3373
                    print(pid, file=pidfile)
 
3374
            except IOError:
 
3375
                logger.error("Could not write to file %r with PID %d",
 
3376
                             pidfilename, pid)
 
3377
        del pidfile
2073
3378
        del pidfilename
2074
 
        
2075
 
        signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
 
    
2077
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2079
 
    
 
3379
 
 
3380
    for termsig in (signal.SIGHUP, signal.SIGTERM):
 
3381
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
 
3382
                             lambda: main_loop.quit() and False)
 
3383
 
2080
3384
    if use_dbus:
2081
 
        class MandosDBusService(dbus.service.Object):
 
3385
 
 
3386
        @alternate_dbus_interfaces(
 
3387
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3388
        class MandosDBusService(DBusObjectWithObjectManager):
2082
3389
            """A D-Bus proxy object"""
 
3390
 
2083
3391
            def __init__(self):
2084
3392
                dbus.service.Object.__init__(self, bus, "/")
 
3393
 
2085
3394
            _interface = "se.recompile.Mandos"
2086
 
            
 
3395
 
2087
3396
            @dbus.service.signal(_interface, signature="o")
2088
3397
            def ClientAdded(self, objpath):
2089
3398
                "D-Bus signal"
2090
3399
                pass
2091
 
            
 
3400
 
2092
3401
            @dbus.service.signal(_interface, signature="ss")
2093
 
            def ClientNotFound(self, fingerprint, address):
 
3402
            def ClientNotFound(self, key_id, address):
2094
3403
                "D-Bus signal"
2095
3404
                pass
2096
 
            
 
3405
 
 
3406
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3407
                               "true"})
2097
3408
            @dbus.service.signal(_interface, signature="os")
2098
3409
            def ClientRemoved(self, objpath, name):
2099
3410
                "D-Bus signal"
2100
3411
                pass
2101
 
            
 
3412
 
 
3413
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3414
                               "true"})
2102
3415
            @dbus.service.method(_interface, out_signature="ao")
2103
3416
            def GetAllClients(self):
2104
3417
                "D-Bus method"
2105
 
                return dbus.Array(c.dbus_object_path
2106
 
                                  for c in tcp_server.clients)
2107
 
            
 
3418
                return dbus.Array(c.dbus_object_path for c in
 
3419
                                  tcp_server.clients.values())
 
3420
 
 
3421
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3422
                               "true"})
2108
3423
            @dbus.service.method(_interface,
2109
3424
                                 out_signature="a{oa{sv}}")
2110
3425
            def GetAllClientsWithProperties(self):
2111
3426
                "D-Bus method"
2112
3427
                return dbus.Dictionary(
2113
 
                    ((c.dbus_object_path, c.GetAll(""))
2114
 
                     for c in tcp_server.clients),
 
3428
                    {c.dbus_object_path: c.GetAll(
 
3429
                        "se.recompile.Mandos.Client")
 
3430
                     for c in tcp_server.clients.values()},
2115
3431
                    signature="oa{sv}")
2116
 
            
 
3432
 
2117
3433
            @dbus.service.method(_interface, in_signature="o")
2118
3434
            def RemoveClient(self, object_path):
2119
3435
                "D-Bus method"
2120
 
                for c in tcp_server.clients:
 
3436
                for c in tcp_server.clients.values():
2121
3437
                    if c.dbus_object_path == object_path:
2122
 
                        tcp_server.clients.remove(c)
 
3438
                        del tcp_server.clients[c.name]
2123
3439
                        c.remove_from_connection()
2124
 
                        # Don't signal anything except ClientRemoved
 
3440
                        # Don't signal the disabling
2125
3441
                        c.disable(quiet=True)
2126
 
                        # Emit D-Bus signal
2127
 
                        self.ClientRemoved(object_path, c.name)
 
3442
                        # Emit D-Bus signal for removal
 
3443
                        self.client_removed_signal(c)
2128
3444
                        return
2129
3445
                raise KeyError(object_path)
2130
 
            
 
3446
 
2131
3447
            del _interface
2132
 
        
2133
 
        class MandosDBusServiceTransitional(MandosDBusService):
2134
 
            __metaclass__ = AlternateDBusNamesMetaclass
2135
 
        mandos_dbus_service = MandosDBusServiceTransitional()
2136
 
    
 
3448
 
 
3449
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
3450
                                 out_signature="a{oa{sa{sv}}}")
 
3451
            def GetManagedObjects(self):
 
3452
                """D-Bus method"""
 
3453
                return dbus.Dictionary(
 
3454
                    {client.dbus_object_path:
 
3455
                     dbus.Dictionary(
 
3456
                         {interface: client.GetAll(interface)
 
3457
                          for interface in
 
3458
                          client._get_all_interface_names()})
 
3459
                     for client in tcp_server.clients.values()})
 
3460
 
 
3461
            def client_added_signal(self, client):
 
3462
                """Send the new standard signal and the old signal"""
 
3463
                if use_dbus:
 
3464
                    # New standard signal
 
3465
                    self.InterfacesAdded(
 
3466
                        client.dbus_object_path,
 
3467
                        dbus.Dictionary(
 
3468
                            {interface: client.GetAll(interface)
 
3469
                             for interface in
 
3470
                             client._get_all_interface_names()}))
 
3471
                    # Old signal
 
3472
                    self.ClientAdded(client.dbus_object_path)
 
3473
 
 
3474
            def client_removed_signal(self, client):
 
3475
                """Send the new standard signal and the old signal"""
 
3476
                if use_dbus:
 
3477
                    # New standard signal
 
3478
                    self.InterfacesRemoved(
 
3479
                        client.dbus_object_path,
 
3480
                        client._get_all_interface_names())
 
3481
                    # Old signal
 
3482
                    self.ClientRemoved(client.dbus_object_path,
 
3483
                                       client.name)
 
3484
 
 
3485
        mandos_dbus_service = MandosDBusService()
 
3486
 
 
3487
    # Save modules to variables to exempt the modules from being
 
3488
    # unloaded before the function registered with atexit() is run.
 
3489
    mp = multiprocessing
 
3490
    wn = wnull
 
3491
 
2137
3492
    def cleanup():
2138
3493
        "Cleanup function; run on exit"
2139
 
        service.cleanup()
2140
 
        
2141
 
        multiprocessing.active_children()
 
3494
        if zeroconf:
 
3495
            service.cleanup()
 
3496
 
 
3497
        mp.active_children()
 
3498
        wn.close()
 
3499
        if not (tcp_server.clients or client_settings):
 
3500
            return
 
3501
 
 
3502
        # Store client before exiting. Secrets are encrypted with key
 
3503
        # based on what config file has. If config file is
 
3504
        # removed/edited, old secret will thus be unrecovable.
 
3505
        clients = {}
 
3506
        with PGPEngine() as pgp:
 
3507
            for client in tcp_server.clients.values():
 
3508
                key = client_settings[client.name]["secret"]
 
3509
                client.encrypted_secret = pgp.encrypt(client.secret,
 
3510
                                                      key)
 
3511
                client_dict = {}
 
3512
 
 
3513
                # A list of attributes that can not be pickled
 
3514
                # + secret.
 
3515
                exclude = {"bus", "changedstate", "secret",
 
3516
                           "checker", "server_settings"}
 
3517
                for name, typ in inspect.getmembers(dbus.service
 
3518
                                                    .Object):
 
3519
                    exclude.add(name)
 
3520
 
 
3521
                client_dict["encrypted_secret"] = (client
 
3522
                                                   .encrypted_secret)
 
3523
                for attr in client.client_structure:
 
3524
                    if attr not in exclude:
 
3525
                        client_dict[attr] = getattr(client, attr)
 
3526
 
 
3527
                clients[client.name] = client_dict
 
3528
                del client_settings[client.name]["secret"]
 
3529
 
 
3530
        try:
 
3531
            with tempfile.NamedTemporaryFile(
 
3532
                    mode='wb',
 
3533
                    suffix=".pickle",
 
3534
                    prefix='clients-',
 
3535
                    dir=os.path.dirname(stored_state_path),
 
3536
                    delete=False) as stored_state:
 
3537
                pickle.dump((clients, client_settings), stored_state,
 
3538
                            protocol=2)
 
3539
                tempname = stored_state.name
 
3540
            os.rename(tempname, stored_state_path)
 
3541
        except (IOError, OSError) as e:
 
3542
            if not debug:
 
3543
                try:
 
3544
                    os.remove(tempname)
 
3545
                except NameError:
 
3546
                    pass
 
3547
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
 
3548
                logger.warning("Could not save persistent state: {}"
 
3549
                               .format(os.strerror(e.errno)))
 
3550
            else:
 
3551
                logger.warning("Could not save persistent state:",
 
3552
                               exc_info=e)
 
3553
                raise
 
3554
 
 
3555
        # Delete all clients, and settings from config
2142
3556
        while tcp_server.clients:
2143
 
            client = tcp_server.clients.pop()
 
3557
            name, client = tcp_server.clients.popitem()
2144
3558
            if use_dbus:
2145
3559
                client.remove_from_connection()
2146
 
            client.disable_hook = None
2147
 
            # Don't signal anything except ClientRemoved
 
3560
            # Don't signal the disabling
2148
3561
            client.disable(quiet=True)
 
3562
            # Emit D-Bus signal for removal
2149
3563
            if use_dbus:
2150
 
                # Emit D-Bus signal
2151
 
                mandos_dbus_service.ClientRemoved(client
2152
 
                                                  .dbus_object_path,
2153
 
                                                  client.name)
2154
 
    
 
3564
                mandos_dbus_service.client_removed_signal(client)
 
3565
        client_settings.clear()
 
3566
 
2155
3567
    atexit.register(cleanup)
2156
 
    
2157
 
    for client in tcp_server.clients:
 
3568
 
 
3569
    for client in tcp_server.clients.values():
2158
3570
        if use_dbus:
2159
 
            # Emit D-Bus signal
2160
 
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
2161
 
        client.enable()
2162
 
    
 
3571
            # Emit D-Bus signal for adding
 
3572
            mandos_dbus_service.client_added_signal(client)
 
3573
        # Need to initiate checking of clients
 
3574
        if client.enabled:
 
3575
            client.init_checker()
 
3576
 
2163
3577
    tcp_server.enable()
2164
3578
    tcp_server.server_activate()
2165
 
    
 
3579
 
2166
3580
    # Find out what port we got
2167
 
    service.port = tcp_server.socket.getsockname()[1]
 
3581
    if zeroconf:
 
3582
        service.port = tcp_server.socket.getsockname()[1]
2168
3583
    if use_ipv6:
2169
3584
        logger.info("Now listening on address %r, port %d,"
2170
 
                    " flowinfo %d, scope_id %d"
2171
 
                    % tcp_server.socket.getsockname())
 
3585
                    " flowinfo %d, scope_id %d",
 
3586
                    *tcp_server.socket.getsockname())
2172
3587
    else:                       # IPv4
2173
 
        logger.info("Now listening on address %r, port %d"
2174
 
                    % tcp_server.socket.getsockname())
2175
 
    
2176
 
    #service.interface = tcp_server.socket.getsockname()[3]
2177
 
    
 
3588
        logger.info("Now listening on address %r, port %d",
 
3589
                    *tcp_server.socket.getsockname())
 
3590
 
 
3591
    # service.interface = tcp_server.socket.getsockname()[3]
 
3592
 
2178
3593
    try:
2179
 
        # From the Avahi example code
2180
 
        try:
2181
 
            service.activate()
2182
 
        except dbus.exceptions.DBusException as error:
2183
 
            logger.critical("DBusException: %s", error)
2184
 
            cleanup()
2185
 
            sys.exit(1)
2186
 
        # End of Avahi example code
2187
 
        
2188
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2189
 
                             lambda *args, **kwargs:
2190
 
                             (tcp_server.handle_request
2191
 
                              (*args[2:], **kwargs) or True))
2192
 
        
 
3594
        if zeroconf:
 
3595
            # From the Avahi example code
 
3596
            try:
 
3597
                service.activate()
 
3598
            except dbus.exceptions.DBusException as error:
 
3599
                logger.critical("D-Bus Exception", exc_info=error)
 
3600
                cleanup()
 
3601
                sys.exit(1)
 
3602
            # End of Avahi example code
 
3603
 
 
3604
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
 
3605
                          lambda *args, **kwargs:
 
3606
                          (tcp_server.handle_request
 
3607
                           (*args[2:], **kwargs) or True))
 
3608
 
2193
3609
        logger.debug("Starting main loop")
2194
3610
        main_loop.run()
2195
3611
    except AvahiError as error:
2196
 
        logger.critical("AvahiError: %s", error)
 
3612
        logger.critical("Avahi Error", exc_info=error)
2197
3613
        cleanup()
2198
3614
        sys.exit(1)
2199
3615
    except KeyboardInterrupt: