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  • Committer: Teddy Hogeborn
  • Date: 2019-03-12 17:33:44 UTC
  • Revision ID: teddy@recompile.se-20190312173344-13d0hhhkmwu3up78
mandos-ctl: Refactor

* mandos-ctl (domain): Rename to "dbus_busname_domain".  Delete after
                       use.
  (busname): Rename to "dbus_busname".  All users changed.
  (server_path): Rename to "server_dbus_path".  All users changed.
  (server_interface): Rename to "server_dbus_interface".  All users
                      changed.
  (client_interface): Rename to "client_dbus_interface".  All users
                      changed.

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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 © 2008-2010 Teddy Hogeborn
15
 
# Copyright © 2008-2010 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
 
31
 
# Contact the authors at <mandos@fukt.bsnet.se>.
32
 
33
 
 
34
 
from __future__ import division, with_statement, absolute_import
35
 
 
36
 
import SocketServer as socketserver
 
30
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
31
#
 
32
# Contact the authors at <mandos@recompile.se>.
 
33
#
 
34
 
 
35
from __future__ import (division, absolute_import, print_function,
 
36
                        unicode_literals)
 
37
 
 
38
try:
 
39
    from future_builtins import *
 
40
except ImportError:
 
41
    pass
 
42
 
 
43
try:
 
44
    import SocketServer as socketserver
 
45
except ImportError:
 
46
    import socketserver
37
47
import socket
38
 
import optparse
 
48
import argparse
39
49
import datetime
40
50
import errno
41
 
import gnutls.crypto
42
 
import gnutls.connection
43
 
import gnutls.errors
44
 
import gnutls.library.functions
45
 
import gnutls.library.constants
46
 
import gnutls.library.types
47
 
import ConfigParser as configparser
 
51
try:
 
52
    import ConfigParser as configparser
 
53
except ImportError:
 
54
    import configparser
48
55
import sys
49
56
import re
50
57
import os
59
66
import struct
60
67
import fcntl
61
68
import functools
62
 
import cPickle as pickle
 
69
try:
 
70
    import cPickle as pickle
 
71
except ImportError:
 
72
    import pickle
63
73
import multiprocessing
 
74
import types
 
75
import binascii
 
76
import tempfile
 
77
import itertools
 
78
import collections
 
79
import codecs
64
80
 
65
81
import dbus
66
82
import dbus.service
67
 
import gobject
68
 
import avahi
 
83
from gi.repository import GLib
69
84
from dbus.mainloop.glib import DBusGMainLoop
70
85
import ctypes
71
86
import ctypes.util
72
87
import xml.dom.minidom
73
88
import inspect
74
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
75
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:
76
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
95
except AttributeError:
78
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
79
99
        from IN import SO_BINDTODEVICE
80
100
    except ImportError:
81
 
        SO_BINDTODEVICE = None
82
 
 
83
 
 
84
 
version = "1.2.3"
85
 
 
86
 
#logger = logging.getLogger(u'mandos')
87
 
logger = logging.Logger(u'mandos')
88
 
syslogger = (logging.handlers.SysLogHandler
89
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
 
              address = "/dev/log"))
91
 
syslogger.setFormatter(logging.Formatter
92
 
                       (u'Mandos [%(process)d]: %(levelname)s:'
93
 
                        u' %(message)s'))
94
 
logger.addHandler(syslogger)
95
 
 
96
 
console = logging.StreamHandler()
97
 
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
 
                                       u' %(levelname)s:'
99
 
                                       u' %(message)s'))
100
 
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
 
101
303
 
102
304
class AvahiError(Exception):
103
305
    def __init__(self, value, *args, **kwargs):
104
306
        self.value = value
105
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
106
 
    def __unicode__(self):
107
 
        return unicode(repr(self.value))
 
307
        return super(AvahiError, self).__init__(value, *args,
 
308
                                                **kwargs)
 
309
 
108
310
 
109
311
class AvahiServiceError(AvahiError):
110
312
    pass
111
313
 
 
314
 
112
315
class AvahiGroupError(AvahiError):
113
316
    pass
114
317
 
115
318
 
116
319
class AvahiService(object):
117
320
    """An Avahi (Zeroconf) service.
118
 
    
 
321
 
119
322
    Attributes:
120
323
    interface: integer; avahi.IF_UNSPEC or an interface index.
121
324
               Used to optionally bind to the specified interface.
122
 
    name: string; Example: u'Mandos'
123
 
    type: string; Example: u'_mandos._tcp'.
124
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
325
    name: string; Example: 'Mandos'
 
326
    type: string; Example: '_mandos._tcp'.
 
327
     See <https://www.iana.org/assignments/service-names-port-numbers>
125
328
    port: integer; what port to announce
126
329
    TXT: list of strings; TXT record for the service
127
330
    domain: string; Domain to publish on, default to .local if empty.
133
336
    server: D-Bus Server
134
337
    bus: dbus.SystemBus()
135
338
    """
136
 
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
 
                 servicetype = None, port = None, TXT = None,
138
 
                 domain = u"", host = u"", max_renames = 32768,
139
 
                 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):
140
351
        self.interface = interface
141
352
        self.name = name
142
353
        self.type = servicetype
150
361
        self.group = None       # our entry group
151
362
        self.server = None
152
363
        self.bus = bus
153
 
    def rename(self):
 
364
        self.entry_group_state_changed_match = None
 
365
 
 
366
    def rename(self, remove=True):
154
367
        """Derived from the Avahi example code"""
155
368
        if self.rename_count >= self.max_renames:
156
 
            logger.critical(u"No suitable Zeroconf service name found"
157
 
                            u" after %i retries, exiting.",
 
369
            logger.critical("No suitable Zeroconf service name found"
 
370
                            " after %i retries, exiting.",
158
371
                            self.rename_count)
159
 
            raise AvahiServiceError(u"Too many renames")
160
 
        self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
 
        logger.info(u"Changing Zeroconf service name to %r ...",
 
372
            raise AvahiServiceError("Too many renames")
 
373
        self.name = str(
 
374
            self.server.GetAlternativeServiceName(self.name))
 
375
        self.rename_count += 1
 
376
        logger.info("Changing Zeroconf service name to %r ...",
162
377
                    self.name)
163
 
        syslogger.setFormatter(logging.Formatter
164
 
                               (u'Mandos (%s) [%%(process)d]:'
165
 
                                u' %%(levelname)s: %%(message)s'
166
 
                                % self.name))
167
 
        self.remove()
 
378
        if remove:
 
379
            self.remove()
168
380
        try:
169
381
            self.add()
170
 
        except dbus.exceptions.DBusException, error:
171
 
            logger.critical(u"DBusException: %s", error)
172
 
            self.cleanup()
173
 
            os._exit(1)
174
 
        self.rename_count += 1
 
382
        except dbus.exceptions.DBusException as error:
 
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
 
175
392
    def remove(self):
176
393
        """Derived from the Avahi example code"""
 
394
        if self.entry_group_state_changed_match is not None:
 
395
            self.entry_group_state_changed_match.remove()
 
396
            self.entry_group_state_changed_match = None
177
397
        if self.group is not None:
178
398
            self.group.Reset()
 
399
 
179
400
    def add(self):
180
401
        """Derived from the Avahi example code"""
 
402
        self.remove()
181
403
        if self.group is None:
182
404
            self.group = dbus.Interface(
183
405
                self.bus.get_object(avahi.DBUS_NAME,
184
406
                                    self.server.EntryGroupNew()),
185
407
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
 
            self.group.connect_to_signal('StateChanged',
187
 
                                         self
188
 
                                         .entry_group_state_changed)
189
 
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
408
        self.entry_group_state_changed_match = (
 
409
            self.group.connect_to_signal(
 
410
                'StateChanged', self.entry_group_state_changed))
 
411
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
412
                     self.name, self.type)
191
413
        self.group.AddService(
192
414
            self.interface,
197
419
            dbus.UInt16(self.port),
198
420
            avahi.string_array_to_txt_array(self.TXT))
199
421
        self.group.Commit()
 
422
 
200
423
    def entry_group_state_changed(self, state, error):
201
424
        """Derived from the Avahi example code"""
202
 
        logger.debug(u"Avahi entry group state change: %i", state)
203
 
        
 
425
        logger.debug("Avahi entry group state change: %i", state)
 
426
 
204
427
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
 
            logger.debug(u"Zeroconf service established.")
 
428
            logger.debug("Zeroconf service established.")
206
429
        elif state == avahi.ENTRY_GROUP_COLLISION:
207
 
            logger.info(u"Zeroconf service name collision.")
 
430
            logger.info("Zeroconf service name collision.")
208
431
            self.rename()
209
432
        elif state == avahi.ENTRY_GROUP_FAILURE:
210
 
            logger.critical(u"Avahi: Error in group state changed %s",
211
 
                            unicode(error))
212
 
            raise AvahiGroupError(u"State changed: %s"
213
 
                                  % unicode(error))
 
433
            logger.critical("Avahi: Error in group state changed %s",
 
434
                            str(error))
 
435
            raise AvahiGroupError("State changed: {!s}".format(error))
 
436
 
214
437
    def cleanup(self):
215
438
        """Derived from the Avahi example code"""
216
439
        if self.group is not None:
217
 
            self.group.Free()
 
440
            try:
 
441
                self.group.Free()
 
442
            except (dbus.exceptions.UnknownMethodException,
 
443
                    dbus.exceptions.DBusException):
 
444
                pass
218
445
            self.group = None
219
 
    def server_state_changed(self, state):
 
446
        self.remove()
 
447
 
 
448
    def server_state_changed(self, state, error=None):
220
449
        """Derived from the Avahi example code"""
221
 
        logger.debug(u"Avahi server state change: %i", state)
222
 
        if state == avahi.SERVER_COLLISION:
223
 
            logger.error(u"Zeroconf server name collision")
224
 
            self.remove()
 
450
        logger.debug("Avahi server state change: %i", state)
 
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
        }
 
457
        if state in bad_states:
 
458
            if bad_states[state] is not None:
 
459
                if error is None:
 
460
                    logger.error(bad_states[state])
 
461
                else:
 
462
                    logger.error(bad_states[state] + ": %r", error)
 
463
            self.cleanup()
225
464
        elif state == avahi.SERVER_RUNNING:
226
 
            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)
 
477
        else:
 
478
            if error is None:
 
479
                logger.debug("Unknown state: %r", state)
 
480
            else:
 
481
                logger.debug("Unknown state: %r: %r", state, error)
 
482
 
227
483
    def activate(self):
228
484
        """Derived from the Avahi example code"""
229
485
        if self.server is None:
230
486
            self.server = dbus.Interface(
231
487
                self.bus.get_object(avahi.DBUS_NAME,
232
 
                                    avahi.DBUS_PATH_SERVER),
 
488
                                    avahi.DBUS_PATH_SERVER,
 
489
                                    follow_name_owner_changes=True),
233
490
                avahi.DBUS_INTERFACE_SERVER)
234
 
        self.server.connect_to_signal(u"StateChanged",
235
 
                                 self.server_state_changed)
 
491
        self.server.connect_to_signal("StateChanged",
 
492
                                      self.server_state_changed)
236
493
        self.server_state_changed(self.server.GetState())
237
494
 
238
495
 
 
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
 
239
828
class Client(object):
240
829
    """A representation of a client host served by this server.
241
 
    
 
830
 
242
831
    Attributes:
243
 
    _approved:   bool(); 'None' if not yet approved/disapproved
 
832
    approved:   bool(); 'None' if not yet approved/disapproved
244
833
    approval_delay: datetime.timedelta(); Time to wait for approval
245
834
    approval_duration: datetime.timedelta(); Duration of one approval
246
835
    checker:    subprocess.Popen(); a running checker process used
247
836
                                    to see if the client lives.
248
837
                                    'None' if no process is running.
249
 
    checker_callback_tag: a gobject event source tag, or None
 
838
    checker_callback_tag: a GLib event source tag, or None
250
839
    checker_command: string; External command which is run to check
251
840
                     if client lives.  %() expansions are done at
252
841
                     runtime with vars(self) as dict, so that for
253
842
                     instance %(name)s can be used in the command.
254
 
    checker_initiator_tag: a gobject event source tag, or None
 
843
    checker_initiator_tag: a GLib event source tag, or None
255
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
256
847
    current_checker_command: string; current running checker_command
257
 
    disable_hook:  If set, called by disable() as disable_hook(self)
258
 
    disable_initiator_tag: a gobject event source tag, or None
 
848
    disable_initiator_tag: a GLib event source tag, or None
259
849
    enabled:    bool()
260
850
    fingerprint: string (40 or 32 hexadecimal digits); used to
261
 
                 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
262
854
    host:       string; available for use by the checker command
263
855
    interval:   datetime.timedelta(); How often to start a new checker
264
856
    last_approval_request: datetime.datetime(); (UTC) or None
265
857
    last_checked_ok: datetime.datetime(); (UTC) or None
266
 
    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
267
864
    name:       string; from the config file, used in log messages and
268
865
                        D-Bus identifiers
269
866
    secret:     bytestring; sent verbatim (over TLS) to client
270
867
    timeout:    datetime.timedelta(); How long from last_checked_ok
271
868
                                      until this client is disabled
 
869
    extended_timeout:   extra long timeout when secret has been sent
272
870
    runtime_expansions: Allowed attributes for runtime expansion.
 
871
    expires:    datetime.datetime(); time (UTC) when a client will be
 
872
                disabled, or None
 
873
    server_settings: The server_settings dict from main()
273
874
    """
274
 
    
275
 
    runtime_expansions = (u"approval_delay", u"approval_duration",
276
 
                          u"created", u"enabled", u"fingerprint",
277
 
                          u"host", u"interval", u"last_checked_ok",
278
 
                          u"last_enabled", u"name", u"timeout")
279
 
    
 
875
 
 
876
    runtime_expansions = ("approval_delay", "approval_duration",
 
877
                          "created", "enabled", "expires", "key_id",
 
878
                          "fingerprint", "host", "interval",
 
879
                          "last_approval_request", "last_checked_ok",
 
880
                          "last_enabled", "name", "timeout")
 
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
 
280
893
    @staticmethod
281
 
    def _timedelta_to_milliseconds(td):
282
 
        "Convert a datetime.timedelta() to milliseconds"
283
 
        return ((td.days * 24 * 60 * 60 * 1000)
284
 
                + (td.seconds * 1000)
285
 
                + (td.microseconds // 1000))
286
 
    
287
 
    def timeout_milliseconds(self):
288
 
        "Return the 'timeout' attribute in milliseconds"
289
 
        return self._timedelta_to_milliseconds(self.timeout)
290
 
    
291
 
    def interval_milliseconds(self):
292
 
        "Return the 'interval' attribute in milliseconds"
293
 
        return self._timedelta_to_milliseconds(self.interval)
294
 
 
295
 
    def approval_delay_milliseconds(self):
296
 
        return self._timedelta_to_milliseconds(self.approval_delay)
297
 
    
298
 
    def __init__(self, name = None, disable_hook=None, config=None):
299
 
        """Note: the 'checker' key in 'config' sets the
300
 
        'checker_command' attribute and *not* the 'checker'
301
 
        attribute."""
 
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):
302
948
        self.name = name
303
 
        if config is None:
304
 
            config = {}
305
 
        logger.debug(u"Creating client %r", self.name)
306
 
        # Uppercase and remove spaces from fingerprint for later
307
 
        # comparison purposes with return value from the fingerprint()
308
 
        # function
309
 
        self.fingerprint = (config[u"fingerprint"].upper()
310
 
                            .replace(u" ", u""))
311
 
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
312
 
        if u"secret" in config:
313
 
            self.secret = config[u"secret"].decode(u"base64")
314
 
        elif u"secfile" in config:
315
 
            with open(os.path.expanduser(os.path.expandvars
316
 
                                         (config[u"secfile"])),
317
 
                      "rb") as secfile:
318
 
                self.secret = secfile.read()
 
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)
319
962
        else:
320
 
            raise TypeError(u"No secret or secfile for client %s"
321
 
                            % self.name)
322
 
        self.host = config.get(u"host", u"")
323
 
        self.created = datetime.datetime.utcnow()
324
 
        self.enabled = False
325
 
        self.last_approval_request = None
326
 
        self.last_enabled = None
327
 
        self.last_checked_ok = None
328
 
        self.timeout = string_to_delta(config[u"timeout"])
329
 
        self.interval = string_to_delta(config[u"interval"])
330
 
        self.disable_hook = disable_hook
 
963
            self.last_enabled = None
 
964
            self.expires = None
 
965
 
 
966
        logger.debug("Creating client %r", self.name)
 
967
        logger.debug("  Key ID: %s", self.key_id)
 
968
        logger.debug("  Fingerprint: %s", self.fingerprint)
 
969
        self.created = settings.get("created",
 
970
                                    datetime.datetime.utcnow())
 
971
 
 
972
        # attributes specific for this server instance
331
973
        self.checker = None
332
974
        self.checker_initiator_tag = None
333
975
        self.disable_initiator_tag = None
334
976
        self.checker_callback_tag = None
335
 
        self.checker_command = config[u"checker"]
336
977
        self.current_checker_command = None
337
 
        self.last_connect = None
338
 
        self._approved = None
339
 
        self.approved_by_default = config.get(u"approved_by_default",
340
 
                                              True)
 
978
        self.approved = None
341
979
        self.approvals_pending = 0
342
 
        self.approval_delay = string_to_delta(
343
 
            config[u"approval_delay"])
344
 
        self.approval_duration = string_to_delta(
345
 
            config[u"approval_duration"])
346
 
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
347
 
    
 
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
348
993
    def send_changedstate(self):
349
 
        self.changedstate.acquire()
350
 
        self.changedstate.notify_all()
351
 
        self.changedstate.release()
352
 
        
 
994
        with self.changedstate:
 
995
            self.changedstate.notify_all()
 
996
 
353
997
    def enable(self):
354
998
        """Start this client's checker and timeout hooks"""
355
 
        if getattr(self, u"enabled", False):
 
999
        if getattr(self, "enabled", False):
356
1000
            # Already enabled
357
1001
            return
358
 
        self.send_changedstate()
 
1002
        self.expires = datetime.datetime.utcnow() + self.timeout
 
1003
        self.enabled = True
359
1004
        self.last_enabled = datetime.datetime.utcnow()
 
1005
        self.init_checker()
 
1006
        self.send_changedstate()
 
1007
 
 
1008
    def disable(self, quiet=True):
 
1009
        """Disable this client."""
 
1010
        if not getattr(self, "enabled", False):
 
1011
            return False
 
1012
        if not quiet:
 
1013
            logger.info("Disabling client %s", self.name)
 
1014
        if getattr(self, "disable_initiator_tag", None) is not None:
 
1015
            GLib.source_remove(self.disable_initiator_tag)
 
1016
            self.disable_initiator_tag = None
 
1017
        self.expires = None
 
1018
        if getattr(self, "checker_initiator_tag", None) is not None:
 
1019
            GLib.source_remove(self.checker_initiator_tag)
 
1020
            self.checker_initiator_tag = None
 
1021
        self.stop_checker()
 
1022
        self.enabled = False
 
1023
        if not quiet:
 
1024
            self.send_changedstate()
 
1025
        # Do not run this again if called by a GLib.timeout_add
 
1026
        return False
 
1027
 
 
1028
    def __del__(self):
 
1029
        self.disable()
 
1030
 
 
1031
    def init_checker(self):
360
1032
        # Schedule a new checker to be started an 'interval' from now,
361
1033
        # and every interval from then on.
362
 
        self.checker_initiator_tag = (gobject.timeout_add
363
 
                                      (self.interval_milliseconds(),
364
 
                                       self.start_checker))
 
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)
365
1039
        # Schedule a disable() when 'timeout' has passed
366
 
        self.disable_initiator_tag = (gobject.timeout_add
367
 
                                   (self.timeout_milliseconds(),
368
 
                                    self.disable))
369
 
        self.enabled = True
 
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)
370
1044
        # Also start a new checker *right now*.
371
1045
        self.start_checker()
372
 
    
373
 
    def disable(self, quiet=True):
374
 
        """Disable this client."""
375
 
        if not getattr(self, "enabled", False):
376
 
            return False
377
 
        if not quiet:
378
 
            self.send_changedstate()
379
 
        if not quiet:
380
 
            logger.info(u"Disabling client %s", self.name)
381
 
        if getattr(self, u"disable_initiator_tag", False):
382
 
            gobject.source_remove(self.disable_initiator_tag)
383
 
            self.disable_initiator_tag = None
384
 
        if getattr(self, u"checker_initiator_tag", False):
385
 
            gobject.source_remove(self.checker_initiator_tag)
386
 
            self.checker_initiator_tag = None
387
 
        self.stop_checker()
388
 
        if self.disable_hook:
389
 
            self.disable_hook(self)
390
 
        self.enabled = False
391
 
        # Do not run this again if called by a gobject.timeout_add
392
 
        return False
393
 
    
394
 
    def __del__(self):
395
 
        self.disable_hook = None
396
 
        self.disable()
397
 
    
398
 
    def checker_callback(self, pid, condition, command):
 
1046
 
 
1047
    def checker_callback(self, source, condition, connection,
 
1048
                         command):
399
1049
        """The checker has completed, so take appropriate actions."""
400
1050
        self.checker_callback_tag = None
401
1051
        self.checker = None
402
 
        if os.WIFEXITED(condition):
403
 
            exitstatus = os.WEXITSTATUS(condition)
404
 
            if exitstatus == 0:
405
 
                logger.info(u"Checker for %(name)s succeeded",
 
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:
 
1060
                logger.info("Checker for %(name)s succeeded",
406
1061
                            vars(self))
407
1062
                self.checked_ok()
408
1063
            else:
409
 
                logger.info(u"Checker for %(name)s failed",
410
 
                            vars(self))
 
1064
                logger.info("Checker for %(name)s failed", vars(self))
411
1065
        else:
412
 
            logger.warning(u"Checker for %(name)s crashed?",
 
1066
            self.last_checker_status = -1
 
1067
            self.last_checker_signal = -returncode
 
1068
            logger.warning("Checker for %(name)s crashed?",
413
1069
                           vars(self))
414
 
    
 
1070
        return False
 
1071
 
415
1072
    def checked_ok(self):
416
 
        """Bump up the timeout for this client.
417
 
        
418
 
        This should only be called when the client has been seen,
419
 
        alive and well.
420
 
        """
 
1073
        """Assert that the client has been seen, alive and well."""
421
1074
        self.last_checked_ok = datetime.datetime.utcnow()
422
 
        gobject.source_remove(self.disable_initiator_tag)
423
 
        self.disable_initiator_tag = (gobject.timeout_add
424
 
                                      (self.timeout_milliseconds(),
425
 
                                       self.disable))
426
 
    
 
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."""
 
1081
        if timeout is None:
 
1082
            timeout = self.timeout
 
1083
        if self.disable_initiator_tag is not None:
 
1084
            GLib.source_remove(self.disable_initiator_tag)
 
1085
            self.disable_initiator_tag = None
 
1086
        if getattr(self, "enabled", False):
 
1087
            self.disable_initiator_tag = GLib.timeout_add(
 
1088
                int(timeout.total_seconds() * 1000), self.disable)
 
1089
            self.expires = datetime.datetime.utcnow() + timeout
 
1090
 
427
1091
    def need_approval(self):
428
1092
        self.last_approval_request = datetime.datetime.utcnow()
429
 
    
 
1093
 
430
1094
    def start_checker(self):
431
1095
        """Start a new checker subprocess if one is not running.
432
 
        
 
1096
 
433
1097
        If a checker already exists, leave it running and do
434
1098
        nothing."""
435
1099
        # The reason for not killing a running checker is that if we
436
 
        # did that, then if a checker (for some reason) started
437
 
        # running slowly and taking more than 'interval' time, the
438
 
        # client would inevitably timeout, since no checker would get
439
 
        # 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
440
1104
        # checkers alone, the checker would have to take more time
441
1105
        # than 'timeout' for the client to be disabled, which is as it
442
1106
        # should be.
443
 
        
444
 
        # If a checker exists, make sure it is not a zombie
445
 
        try:
446
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
 
        except (AttributeError, OSError), error:
448
 
            if (isinstance(error, OSError)
449
 
                and error.errno != errno.ECHILD):
450
 
                raise error
451
 
        else:
452
 
            if pid:
453
 
                logger.warning(u"Checker was a zombie")
454
 
                gobject.source_remove(self.checker_callback_tag)
455
 
                self.checker_callback(pid, status,
456
 
                                      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
457
1112
        # Start a new checker if needed
458
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}
459
1118
            try:
460
 
                # In case checker_command has exactly one % operator
461
 
                command = self.checker_command % self.host
462
 
            except TypeError:
463
 
                # Escape attributes for the shell
464
 
                escaped_attrs = dict(
465
 
                    (attr,
466
 
                     re.escape(unicode(str(getattr(self, attr, u"")),
467
 
                                       errors=
468
 
                                       u'replace')))
469
 
                    for attr in
470
 
                    self.runtime_expansions)
471
 
 
472
 
                try:
473
 
                    command = self.checker_command % escaped_attrs
474
 
                except TypeError, error:
475
 
                    logger.error(u'Could not format string "%s":'
476
 
                                 u' %s', self.checker_command, error)
477
 
                    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
478
1125
            self.current_checker_command = command
479
 
            try:
480
 
                logger.info(u"Starting checker %r for %s",
481
 
                            command, self.name)
482
 
                # We don't need to redirect stdout and stderr, since
483
 
                # in normal mode, that is already done by daemon(),
484
 
                # and in debug mode we don't want to.  (Stdin is
485
 
                # always replaced by /dev/null.)
486
 
                self.checker = subprocess.Popen(command,
487
 
                                                close_fds=True,
488
 
                                                shell=True, cwd=u"/")
489
 
                self.checker_callback_tag = (gobject.child_watch_add
490
 
                                             (self.checker.pid,
491
 
                                              self.checker_callback,
492
 
                                              data=command))
493
 
                # The checker may have completed before the gobject
494
 
                # watch was added.  Check for this.
495
 
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
 
                if pid:
497
 
                    gobject.source_remove(self.checker_callback_tag)
498
 
                    self.checker_callback(pid, status, command)
499
 
            except OSError, error:
500
 
                logger.error(u"Failed to start subprocess: %s",
501
 
                             error)
502
 
        # 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
503
1152
        return True
504
 
    
 
1153
 
505
1154
    def stop_checker(self):
506
1155
        """Force the checker process, if any, to stop."""
507
1156
        if self.checker_callback_tag:
508
 
            gobject.source_remove(self.checker_callback_tag)
 
1157
            GLib.source_remove(self.checker_callback_tag)
509
1158
            self.checker_callback_tag = None
510
 
        if getattr(self, u"checker", None) is None:
 
1159
        if getattr(self, "checker", None) is None:
511
1160
            return
512
 
        logger.debug(u"Stopping checker for %(name)s", vars(self))
513
 
        try:
514
 
            os.kill(self.checker.pid, signal.SIGTERM)
515
 
            #time.sleep(0.5)
516
 
            #if self.checker.poll() is None:
517
 
            #    os.kill(self.checker.pid, signal.SIGKILL)
518
 
        except OSError, error:
519
 
            if error.errno != errno.ESRCH: # No such process
520
 
                raise
 
1161
        logger.debug("Stopping checker for %(name)s", vars(self))
 
1162
        self.checker.terminate()
521
1163
        self.checker = None
522
1164
 
523
 
def dbus_service_property(dbus_interface, signature=u"v",
524
 
                          access=u"readwrite", byte_arrays=False):
 
1165
 
 
1166
def dbus_service_property(dbus_interface,
 
1167
                          signature="v",
 
1168
                          access="readwrite",
 
1169
                          byte_arrays=False):
525
1170
    """Decorators for marking methods of a DBusObjectWithProperties to
526
1171
    become properties on the D-Bus.
527
 
    
 
1172
 
528
1173
    The decorated method will be called with no arguments by "Get"
529
1174
    and with one argument by "Set".
530
 
    
 
1175
 
531
1176
    The parameters, where they are supported, are the same as
532
1177
    dbus.service.method, except there is only "signature", since the
533
1178
    type from Get() and the type sent to Set() is the same.
534
1179
    """
535
1180
    # Encoding deeply encoded byte arrays is not supported yet by the
536
1181
    # "Set" method, so we fail early here:
537
 
    if byte_arrays and signature != u"ay":
538
 
        raise ValueError(u"Byte arrays not supported for non-'ay'"
539
 
                         u" signature %r" % signature)
 
1182
    if byte_arrays and signature != "ay":
 
1183
        raise ValueError("Byte arrays not supported for non-'ay'"
 
1184
                         " signature {!r}".format(signature))
 
1185
 
540
1186
    def decorator(func):
541
1187
        func._dbus_is_property = True
542
1188
        func._dbus_interface = dbus_interface
543
1189
        func._dbus_signature = signature
544
1190
        func._dbus_access = access
545
1191
        func._dbus_name = func.__name__
546
 
        if func._dbus_name.endswith(u"_dbus_property"):
 
1192
        if func._dbus_name.endswith("_dbus_property"):
547
1193
            func._dbus_name = func._dbus_name[:-14]
548
 
        func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
 
        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
 
550
1240
    return decorator
551
1241
 
552
1242
 
553
1243
class DBusPropertyException(dbus.exceptions.DBusException):
554
1244
    """A base class for D-Bus property-related exceptions
555
1245
    """
556
 
    def __unicode__(self):
557
 
        return unicode(str(self))
 
1246
    pass
558
1247
 
559
1248
 
560
1249
class DBusPropertyAccessException(DBusPropertyException):
569
1258
    pass
570
1259
 
571
1260
 
572
 
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):
573
1351
    """A D-Bus object with properties.
574
1352
 
575
1353
    Classes inheriting from this can use the dbus_service_property
576
1354
    decorator to expose methods as D-Bus properties.  It exposes the
577
1355
    standard Get(), Set(), and GetAll() methods on the D-Bus.
578
1356
    """
579
 
    
580
 
    @staticmethod
581
 
    def _is_dbus_property(obj):
582
 
        return getattr(obj, u"_dbus_is_property", False)
583
 
    
584
 
    def _get_all_dbus_properties(self):
585
 
        """Returns a generator of (name, attribute) pairs
586
 
        """
587
 
        return ((prop._dbus_name, prop)
588
 
                for name, prop in
589
 
                inspect.getmembers(self, self._is_dbus_property))
590
 
    
 
1357
 
591
1358
    def _get_dbus_property(self, interface_name, property_name):
592
1359
        """Returns a bound method if one exists which is a D-Bus
593
1360
        property with the specified name and interface.
594
1361
        """
595
 
        for name in (property_name,
596
 
                     property_name + u"_dbus_property"):
597
 
            prop = getattr(self, name, None)
598
 
            if (prop is None
599
 
                or not self._is_dbus_property(prop)
600
 
                or prop._dbus_name != property_name
601
 
                or (interface_name and prop._dbus_interface
602
 
                    and interface_name != prop._dbus_interface)):
603
 
                continue
604
 
            return prop
 
1362
        for cls in self.__class__.__mro__:
 
1363
            for name, value in inspect.getmembers(
 
1364
                    cls, self._is_dbus_thing("property")):
 
1365
                if (value._dbus_name == property_name
 
1366
                    and value._dbus_interface == interface_name):
 
1367
                    return value.__get__(self)
 
1368
 
605
1369
        # No such property
606
 
        raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
 
                                   + interface_name + u"."
608
 
                                   + property_name)
609
 
    
610
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
 
                         out_signature=u"v")
 
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",
 
1384
                         out_signature="v")
612
1385
    def Get(self, interface_name, property_name):
613
1386
        """Standard D-Bus property Get() method, see D-Bus standard.
614
1387
        """
615
1388
        prop = self._get_dbus_property(interface_name, property_name)
616
 
        if prop._dbus_access == u"write":
 
1389
        if prop._dbus_access == "write":
617
1390
            raise DBusPropertyAccessException(property_name)
618
1391
        value = prop()
619
 
        if not hasattr(value, u"variant_level"):
 
1392
        if not hasattr(value, "variant_level"):
620
1393
            return value
621
1394
        return type(value)(value, variant_level=value.variant_level+1)
622
 
    
623
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
 
1395
 
 
1396
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
1397
    def Set(self, interface_name, property_name, value):
625
1398
        """Standard D-Bus property Set() method, see D-Bus standard.
626
1399
        """
627
1400
        prop = self._get_dbus_property(interface_name, property_name)
628
 
        if prop._dbus_access == u"read":
 
1401
        if prop._dbus_access == "read":
629
1402
            raise DBusPropertyAccessException(property_name)
630
 
        if prop._dbus_get_args_options[u"byte_arrays"]:
 
1403
        if prop._dbus_get_args_options["byte_arrays"]:
631
1404
            # The byte_arrays option is not supported yet on
632
1405
            # signatures other than "ay".
633
 
            if prop._dbus_signature != u"ay":
634
 
                raise ValueError
635
 
            value = dbus.ByteArray(''.join(unichr(byte)
636
 
                                           for byte in value))
 
1406
            if prop._dbus_signature != "ay":
 
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))
637
1412
        prop(value)
638
 
    
639
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
 
                         out_signature=u"a{sv}")
 
1413
 
 
1414
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1415
                         in_signature="s",
 
1416
                         out_signature="a{sv}")
641
1417
    def GetAll(self, interface_name):
642
1418
        """Standard D-Bus property GetAll() method, see D-Bus
643
1419
        standard.
644
1420
 
645
1421
        Note: Will not include properties with access="write".
646
1422
        """
647
 
        all = {}
648
 
        for name, prop in self._get_all_dbus_properties():
 
1423
        properties = {}
 
1424
        for name, prop in self._get_all_dbus_things("property"):
649
1425
            if (interface_name
650
1426
                and interface_name != prop._dbus_interface):
651
1427
                # Interface non-empty but did not match
652
1428
                continue
653
1429
            # Ignore write-only properties
654
 
            if prop._dbus_access == u"write":
 
1430
            if prop._dbus_access == "write":
655
1431
                continue
656
1432
            value = prop()
657
 
            if not hasattr(value, u"variant_level"):
658
 
                all[name] = value
 
1433
            if not hasattr(value, "variant_level"):
 
1434
                properties[name] = value
659
1435
                continue
660
 
            all[name] = type(value)(value, variant_level=
661
 
                                    value.variant_level+1)
662
 
        return dbus.Dictionary(all, signature=u"sv")
663
 
    
 
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
 
664
1448
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
 
                         out_signature=u"s",
 
1449
                         out_signature="s",
666
1450
                         path_keyword='object_path',
667
1451
                         connection_keyword='connection')
668
1452
    def Introspect(self, object_path, connection):
669
 
        """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.
670
1456
        """
671
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
672
 
                                                   connection)
 
1457
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1458
                                                         object_path,
 
1459
                                                         connection)
673
1460
        try:
674
1461
            document = xml.dom.minidom.parseString(xmlstring)
 
1462
 
675
1463
            def make_tag(document, name, prop):
676
 
                e = document.createElement(u"property")
677
 
                e.setAttribute(u"name", name)
678
 
                e.setAttribute(u"type", prop._dbus_signature)
679
 
                e.setAttribute(u"access", prop._dbus_access)
 
1464
                e = document.createElement("property")
 
1465
                e.setAttribute("name", name)
 
1466
                e.setAttribute("type", prop._dbus_signature)
 
1467
                e.setAttribute("access", prop._dbus_access)
680
1468
                return e
681
 
            for if_tag in document.getElementsByTagName(u"interface"):
 
1469
 
 
1470
            for if_tag in document.getElementsByTagName("interface"):
 
1471
                # Add property tags
682
1472
                for tag in (make_tag(document, name, prop)
683
1473
                            for name, prop
684
 
                            in self._get_all_dbus_properties()
 
1474
                            in self._get_all_dbus_things("property")
685
1475
                            if prop._dbus_interface
686
 
                            == if_tag.getAttribute(u"name")):
 
1476
                            == if_tag.getAttribute("name")):
687
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)
688
1494
                # Add the names to the return values for the
689
1495
                # "org.freedesktop.DBus.Properties" methods
690
 
                if (if_tag.getAttribute(u"name")
691
 
                    == u"org.freedesktop.DBus.Properties"):
692
 
                    for cn in if_tag.getElementsByTagName(u"method"):
693
 
                        if cn.getAttribute(u"name") == u"Get":
694
 
                            for arg in cn.getElementsByTagName(u"arg"):
695
 
                                if (arg.getAttribute(u"direction")
696
 
                                    == u"out"):
697
 
                                    arg.setAttribute(u"name", u"value")
698
 
                        elif cn.getAttribute(u"name") == u"GetAll":
699
 
                            for arg in cn.getElementsByTagName(u"arg"):
700
 
                                if (arg.getAttribute(u"direction")
701
 
                                    == u"out"):
702
 
                                    arg.setAttribute(u"name", u"props")
703
 
            xmlstring = document.toxml(u"utf-8")
704
 
            document.unlink()
705
 
        except (AttributeError, xml.dom.DOMException,
706
 
                xml.parsers.expat.ExpatError), error:
707
 
            logger.error(u"Failed to override Introspection method",
708
 
                         error)
709
 
        return xmlstring
710
 
 
711
 
 
 
1496
                if (if_tag.getAttribute("name")
 
1497
                    == "org.freedesktop.DBus.Properties"):
 
1498
                    for cn in if_tag.getElementsByTagName("method"):
 
1499
                        if cn.getAttribute("name") == "Get":
 
1500
                            for arg in cn.getElementsByTagName("arg"):
 
1501
                                if (arg.getAttribute("direction")
 
1502
                                    == "out"):
 
1503
                                    arg.setAttribute("name", "value")
 
1504
                        elif cn.getAttribute("name") == "GetAll":
 
1505
                            for arg in cn.getElementsByTagName("arg"):
 
1506
                                if (arg.getAttribute("direction")
 
1507
                                    == "out"):
 
1508
                                    arg.setAttribute("name", "props")
 
1509
            xmlstring = document.toxml("utf-8")
 
1510
            document.unlink()
 
1511
        except (AttributeError, xml.dom.DOMException,
 
1512
                xml.parsers.expat.ExpatError) as error:
 
1513
            logger.error("Failed to override Introspection method",
 
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):
 
1590
    """Convert a UTC datetime.datetime() to a D-Bus type."""
 
1591
    if dt is None:
 
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).
 
1618
    """
 
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):
 
1627
                # Ignore non-D-Bus attributes, and D-Bus attributes
 
1628
                # with the wrong interface name
 
1629
                if (not hasattr(attribute, "_dbus_interface")
 
1630
                    or not attribute._dbus_interface.startswith(
 
1631
                        orig_interface_name)):
 
1632
                    continue
 
1633
                # Create an alternate D-Bus interface name based on
 
1634
                # the current name
 
1635
                alt_interface = attribute._dbus_interface.replace(
 
1636
                    orig_interface_name, alt_interface_name)
 
1637
                interface_names.add(alt_interface)
 
1638
                # Is this a D-Bus signal?
 
1639
                if getattr(attribute, "_dbus_is_signal", False):
 
1640
                    # Extract the original non-method undecorated
 
1641
                    # function by black magic
 
1642
                    if sys.version_info.major == 2:
 
1643
                        nonmethod_func = (dict(
 
1644
                            zip(attribute.func_code.co_freevars,
 
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)
 
1652
                    # Create a new, but exactly alike, function
 
1653
                    # object, and decorate it to be a new D-Bus signal
 
1654
                    # with the alternate D-Bus interface name
 
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
 
 
1666
                    # Define a creator of a function to call both the
 
1667
                    # original and alternate functions, so both the
 
1668
                    # original and alternate signals gets sent when
 
1669
                    # the function is called
 
1670
                    def fixscope(func1, func2):
 
1671
                        """This function is a scope container to pass
 
1672
                        func1 and func2 to the "call_both" function
 
1673
                        outside of its arguments"""
 
1674
 
 
1675
                        @functools.wraps(func2)
 
1676
                        def call_both(*args, **kwargs):
 
1677
                            """This function will emit two D-Bus
 
1678
                            signals by calling func1 and func2"""
 
1679
                            func1(*args, **kwargs)
 
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
 
 
1687
                        return call_both
 
1688
                    # Create the "call_both" function and add it to
 
1689
                    # the class
 
1690
                    attr[attrname] = fixscope(attribute, new_function)
 
1691
                # Is this a D-Bus method?
 
1692
                elif getattr(attribute, "_dbus_is_method", False):
 
1693
                    # Create a new, but exactly alike, function
 
1694
                    # object.  Decorate it to be a new D-Bus method
 
1695
                    # with the alternate D-Bus interface name.  Add it
 
1696
                    # to the class.
 
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
 
1709
                # Is this a D-Bus property?
 
1710
                elif getattr(attribute, "_dbus_is_property", False):
 
1711
                    # Create a new, but exactly alike, function
 
1712
                    # object, and decorate it to be a new D-Bus
 
1713
                    # property with the alternate D-Bus interface
 
1714
                    # name.  Add it to the class.
 
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"})
712
1767
class ClientDBus(Client, DBusObjectWithProperties):
713
1768
    """A Client class using D-Bus
714
 
    
 
1769
 
715
1770
    Attributes:
716
1771
    dbus_object_path: dbus.ObjectPath
717
1772
    bus: dbus.SystemBus()
718
1773
    """
719
 
    
 
1774
 
720
1775
    runtime_expansions = (Client.runtime_expansions
721
 
                          + (u"dbus_object_path",))
722
 
    
 
1776
                          + ("dbus_object_path", ))
 
1777
 
 
1778
    _interface = "se.recompile.Mandos.Client"
 
1779
 
723
1780
    # dbus.service.Object doesn't use super(), so we can't either.
724
 
    
725
 
    def __init__(self, bus = None, *args, **kwargs):
726
 
        self._approvals_pending = 0
 
1781
 
 
1782
    def __init__(self, bus=None, *args, **kwargs):
727
1783
        self.bus = bus
728
1784
        Client.__init__(self, *args, **kwargs)
729
1785
        # Only now, when this client is initialized, can it show up on
730
1786
        # the D-Bus
731
 
        client_object_name = unicode(self.name).translate(
732
 
            {ord(u"."): ord(u"_"),
733
 
             ord(u"-"): ord(u"_")})
734
 
        self.dbus_object_path = (dbus.ObjectPath
735
 
                                 (u"/clients/" + client_object_name))
 
1787
        client_object_name = str(self.name).translate(
 
1788
            {ord("."): ord("_"),
 
1789
             ord("-"): ord("_")})
 
1790
        self.dbus_object_path = dbus.ObjectPath(
 
1791
            "/clients/" + client_object_name)
736
1792
        DBusObjectWithProperties.__init__(self, self.bus,
737
1793
                                          self.dbus_object_path)
738
 
        
739
 
    def _get_approvals_pending(self):
740
 
        return self._approvals_pending
741
 
    def _set_approvals_pending(self, value):
742
 
        old_value = self._approvals_pending
743
 
        self._approvals_pending = value
744
 
        bval = bool(value)
745
 
        if (hasattr(self, "dbus_object_path")
746
 
            and bval is not bool(old_value)):
747
 
            dbus_bool = dbus.Boolean(bval, variant_level=1)
748
 
            self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
 
                                 dbus_bool)
750
 
 
751
 
    approvals_pending = property(_get_approvals_pending,
752
 
                                 _set_approvals_pending)
753
 
    del _get_approvals_pending, _set_approvals_pending
754
 
    
755
 
    @staticmethod
756
 
    def _datetime_to_dbus(dt, variant_level=0):
757
 
        """Convert a UTC datetime.datetime() to a D-Bus type."""
758
 
        return dbus.String(dt.isoformat(),
759
 
                           variant_level=variant_level)
760
 
    
761
 
    def enable(self):
762
 
        oldstate = getattr(self, u"enabled", False)
763
 
        r = Client.enable(self)
764
 
        if oldstate != self.enabled:
765
 
            # Emit D-Bus signals
766
 
            self.PropertyChanged(dbus.String(u"Enabled"),
767
 
                                 dbus.Boolean(True, variant_level=1))
768
 
            self.PropertyChanged(
769
 
                dbus.String(u"LastEnabled"),
770
 
                self._datetime_to_dbus(self.last_enabled,
771
 
                                       variant_level=1))
772
 
        return r
773
 
    
774
 
    def disable(self, quiet = False):
775
 
        oldstate = getattr(self, u"enabled", False)
776
 
        r = Client.disable(self, quiet=quiet)
777
 
        if not quiet and oldstate != self.enabled:
778
 
            # Emit D-Bus signal
779
 
            self.PropertyChanged(dbus.String(u"Enabled"),
780
 
                                 dbus.Boolean(False, variant_level=1))
781
 
        return r
782
 
    
 
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):
 
1800
        """ Modify a variable so that it's a property which announces
 
1801
        its changes to DBus.
 
1802
 
 
1803
        transform_fun: Function that takes a value and a variant_level
 
1804
                       and transforms it to a D-Bus type.
 
1805
        dbus_name: D-Bus name of the variable
 
1806
        type_func: Function that transform the value before sending it
 
1807
                   to the D-Bus.  Default: no transform
 
1808
        variant_level: D-Bus variant level.  Default: 1
 
1809
        """
 
1810
        attrname = "_{}".format(dbus_name)
 
1811
 
 
1812
        def setter(self, value):
 
1813
            if hasattr(self, "dbus_object_path"):
 
1814
                if (not hasattr(self, attrname) or
 
1815
                    type_func(getattr(self, attrname, None))
 
1816
                    != type_func(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())
 
1832
            setattr(self, attrname, value)
 
1833
 
 
1834
        return property(lambda self: getattr(self, attrname), setter)
 
1835
 
 
1836
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
 
1837
    approvals_pending = notifychangeproperty(dbus.Boolean,
 
1838
                                             "ApprovalPending",
 
1839
                                             type_func=bool)
 
1840
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
 
1841
    last_enabled = notifychangeproperty(datetime_to_dbus,
 
1842
                                        "LastEnabled")
 
1843
    checker = notifychangeproperty(
 
1844
        dbus.Boolean, "CheckerRunning",
 
1845
        type_func=lambda checker: checker is not None)
 
1846
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
 
1847
                                           "LastCheckedOK")
 
1848
    last_checker_status = notifychangeproperty(dbus.Int16,
 
1849
                                               "LastCheckerStatus")
 
1850
    last_approval_request = notifychangeproperty(
 
1851
        datetime_to_dbus, "LastApprovalRequest")
 
1852
    approved_by_default = notifychangeproperty(dbus.Boolean,
 
1853
                                               "ApprovedByDefault")
 
1854
    approval_delay = notifychangeproperty(
 
1855
        dbus.UInt64, "ApprovalDelay",
 
1856
        type_func=lambda td: td.total_seconds() * 1000)
 
1857
    approval_duration = notifychangeproperty(
 
1858
        dbus.UInt64, "ApprovalDuration",
 
1859
        type_func=lambda td: td.total_seconds() * 1000)
 
1860
    host = notifychangeproperty(dbus.String, "Host")
 
1861
    timeout = notifychangeproperty(
 
1862
        dbus.UInt64, "Timeout",
 
1863
        type_func=lambda td: td.total_seconds() * 1000)
 
1864
    extended_timeout = notifychangeproperty(
 
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)
 
1870
    checker_command = notifychangeproperty(dbus.String, "Checker")
 
1871
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
 
1872
                                  invalidate_only=True)
 
1873
 
 
1874
    del notifychangeproperty
 
1875
 
783
1876
    def __del__(self, *args, **kwargs):
784
1877
        try:
785
1878
            self.remove_from_connection()
786
1879
        except LookupError:
787
1880
            pass
788
 
        if hasattr(DBusObjectWithProperties, u"__del__"):
 
1881
        if hasattr(DBusObjectWithProperties, "__del__"):
789
1882
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1883
        Client.__del__(self, *args, **kwargs)
791
 
    
792
 
    def checker_callback(self, pid, condition, command,
793
 
                         *args, **kwargs):
794
 
        self.checker_callback_tag = None
795
 
        self.checker = None
796
 
        # Emit D-Bus signal
797
 
        self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
 
                             dbus.Boolean(False, variant_level=1))
799
 
        if os.WIFEXITED(condition):
800
 
            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:
801
1892
            # Emit D-Bus signal
802
1893
            self.CheckerCompleted(dbus.Int16(exitstatus),
803
 
                                  dbus.Int64(condition),
 
1894
                                  # This is specific to GNU libC
 
1895
                                  dbus.Int64(exitstatus << 8),
804
1896
                                  dbus.String(command))
805
1897
        else:
806
1898
            # Emit D-Bus signal
807
1899
            self.CheckerCompleted(dbus.Int16(-1),
808
 
                                  dbus.Int64(condition),
 
1900
                                  dbus.Int64(
 
1901
                                      # This is specific to GNU libC
 
1902
                                      (exitstatus << 8)
 
1903
                                      | self.last_checker_signal),
809
1904
                                  dbus.String(command))
810
 
        
811
 
        return Client.checker_callback(self, pid, condition, command,
812
 
                                       *args, **kwargs)
813
 
    
814
 
    def checked_ok(self, *args, **kwargs):
815
 
        r = Client.checked_ok(self, *args, **kwargs)
816
 
        # Emit D-Bus signal
817
 
        self.PropertyChanged(
818
 
            dbus.String(u"LastCheckedOK"),
819
 
            (self._datetime_to_dbus(self.last_checked_ok,
820
 
                                    variant_level=1)))
821
 
        return r
822
 
    
823
 
    def need_approval(self, *args, **kwargs):
824
 
        r = Client.need_approval(self, *args, **kwargs)
825
 
        # Emit D-Bus signal
826
 
        self.PropertyChanged(
827
 
            dbus.String(u"LastApprovalRequest"),
828
 
            (self._datetime_to_dbus(self.last_approval_request,
829
 
                                    variant_level=1)))
830
 
        return r
831
 
    
 
1905
        return ret
 
1906
 
832
1907
    def start_checker(self, *args, **kwargs):
833
 
        old_checker = self.checker
834
 
        if self.checker is not None:
835
 
            old_checker_pid = self.checker.pid
836
 
        else:
837
 
            old_checker_pid = None
 
1908
        old_checker_pid = getattr(self.checker, "pid", None)
838
1909
        r = Client.start_checker(self, *args, **kwargs)
839
1910
        # Only if new checker process was started
840
1911
        if (self.checker is not None
841
1912
            and old_checker_pid != self.checker.pid):
842
1913
            # Emit D-Bus signal
843
1914
            self.CheckerStarted(self.current_checker_command)
844
 
            self.PropertyChanged(
845
 
                dbus.String(u"CheckerRunning"),
846
 
                dbus.Boolean(True, variant_level=1))
847
 
        return r
848
 
    
849
 
    def stop_checker(self, *args, **kwargs):
850
 
        old_checker = getattr(self, u"checker", None)
851
 
        r = Client.stop_checker(self, *args, **kwargs)
852
 
        if (old_checker is not None
853
 
            and getattr(self, u"checker", None) is None):
854
 
            self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
 
                                 dbus.Boolean(False, variant_level=1))
856
1915
        return r
857
1916
 
858
1917
    def _reset_approved(self):
859
 
        self._approved = None
 
1918
        self.approved = None
860
1919
        return False
861
 
    
 
1920
 
862
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)
863
1925
        self.send_changedstate()
864
 
        self._approved = value
865
 
        gobject.timeout_add(self._timedelta_to_milliseconds
866
 
                            (self.approval_duration),
867
 
                            self._reset_approved)
868
 
    
869
 
    
870
 
    ## D-Bus methods, signals & properties
871
 
    _interface = u"se.bsnet.fukt.Mandos.Client"
872
 
    
873
 
    ## Signals
874
 
    
 
1926
 
 
1927
    #  D-Bus methods, signals & properties
 
1928
 
 
1929
    #  Interfaces
 
1930
 
 
1931
    #  Signals
 
1932
 
875
1933
    # CheckerCompleted - signal
876
 
    @dbus.service.signal(_interface, signature=u"nxs")
 
1934
    @dbus.service.signal(_interface, signature="nxs")
877
1935
    def CheckerCompleted(self, exitcode, waitstatus, command):
878
1936
        "D-Bus signal"
879
1937
        pass
880
 
    
 
1938
 
881
1939
    # CheckerStarted - signal
882
 
    @dbus.service.signal(_interface, signature=u"s")
 
1940
    @dbus.service.signal(_interface, signature="s")
883
1941
    def CheckerStarted(self, command):
884
1942
        "D-Bus signal"
885
1943
        pass
886
 
    
 
1944
 
887
1945
    # PropertyChanged - signal
888
 
    @dbus.service.signal(_interface, signature=u"sv")
 
1946
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
 
1947
    @dbus.service.signal(_interface, signature="sv")
889
1948
    def PropertyChanged(self, property, value):
890
1949
        "D-Bus signal"
891
1950
        pass
892
 
    
 
1951
 
893
1952
    # GotSecret - signal
894
1953
    @dbus.service.signal(_interface)
895
1954
    def GotSecret(self):
898
1957
        server to mandos-client
899
1958
        """
900
1959
        pass
901
 
    
 
1960
 
902
1961
    # Rejected - signal
903
 
    @dbus.service.signal(_interface, signature=u"s")
 
1962
    @dbus.service.signal(_interface, signature="s")
904
1963
    def Rejected(self, reason):
905
1964
        "D-Bus signal"
906
1965
        pass
907
 
    
 
1966
 
908
1967
    # NeedApproval - signal
909
 
    @dbus.service.signal(_interface, signature=u"tb")
 
1968
    @dbus.service.signal(_interface, signature="tb")
910
1969
    def NeedApproval(self, timeout, default):
911
1970
        "D-Bus signal"
912
1971
        return self.need_approval()
913
 
    
914
 
    ## Methods
915
 
    
 
1972
 
 
1973
    #  Methods
 
1974
 
916
1975
    # Approve - method
917
 
    @dbus.service.method(_interface, in_signature=u"b")
 
1976
    @dbus.service.method(_interface, in_signature="b")
918
1977
    def Approve(self, value):
919
1978
        self.approve(value)
920
 
    
 
1979
 
921
1980
    # CheckedOK - method
922
1981
    @dbus.service.method(_interface)
923
1982
    def CheckedOK(self):
924
 
        return self.checked_ok()
925
 
    
 
1983
        self.checked_ok()
 
1984
 
926
1985
    # Enable - method
 
1986
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
927
1987
    @dbus.service.method(_interface)
928
1988
    def Enable(self):
929
1989
        "D-Bus method"
930
1990
        self.enable()
931
 
    
 
1991
 
932
1992
    # StartChecker - method
 
1993
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
933
1994
    @dbus.service.method(_interface)
934
1995
    def StartChecker(self):
935
1996
        "D-Bus method"
936
1997
        self.start_checker()
937
 
    
 
1998
 
938
1999
    # Disable - method
 
2000
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
939
2001
    @dbus.service.method(_interface)
940
2002
    def Disable(self):
941
2003
        "D-Bus method"
942
2004
        self.disable()
943
 
    
 
2005
 
944
2006
    # StopChecker - method
 
2007
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
945
2008
    @dbus.service.method(_interface)
946
2009
    def StopChecker(self):
947
2010
        self.stop_checker()
948
 
    
949
 
    ## Properties
950
 
    
 
2011
 
 
2012
    #  Properties
 
2013
 
951
2014
    # ApprovalPending - property
952
 
    @dbus_service_property(_interface, signature=u"b", access=u"read")
 
2015
    @dbus_service_property(_interface, signature="b", access="read")
953
2016
    def ApprovalPending_dbus_property(self):
954
2017
        return dbus.Boolean(bool(self.approvals_pending))
955
 
    
 
2018
 
956
2019
    # ApprovedByDefault - property
957
 
    @dbus_service_property(_interface, signature=u"b",
958
 
                           access=u"readwrite")
 
2020
    @dbus_service_property(_interface,
 
2021
                           signature="b",
 
2022
                           access="readwrite")
959
2023
    def ApprovedByDefault_dbus_property(self, value=None):
960
2024
        if value is None:       # get
961
2025
            return dbus.Boolean(self.approved_by_default)
962
2026
        self.approved_by_default = bool(value)
963
 
        # Emit D-Bus signal
964
 
        self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
 
                             dbus.Boolean(value, variant_level=1))
966
 
    
 
2027
 
967
2028
    # ApprovalDelay - property
968
 
    @dbus_service_property(_interface, signature=u"t",
969
 
                           access=u"readwrite")
 
2029
    @dbus_service_property(_interface,
 
2030
                           signature="t",
 
2031
                           access="readwrite")
970
2032
    def ApprovalDelay_dbus_property(self, value=None):
971
2033
        if value is None:       # get
972
 
            return dbus.UInt64(self.approval_delay_milliseconds())
 
2034
            return dbus.UInt64(self.approval_delay.total_seconds()
 
2035
                               * 1000)
973
2036
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
 
        # Emit D-Bus signal
975
 
        self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
 
                             dbus.UInt64(value, variant_level=1))
977
 
    
 
2037
 
978
2038
    # ApprovalDuration - property
979
 
    @dbus_service_property(_interface, signature=u"t",
980
 
                           access=u"readwrite")
 
2039
    @dbus_service_property(_interface,
 
2040
                           signature="t",
 
2041
                           access="readwrite")
981
2042
    def ApprovalDuration_dbus_property(self, value=None):
982
2043
        if value is None:       # get
983
 
            return dbus.UInt64(self._timedelta_to_milliseconds(
984
 
                    self.approval_duration))
 
2044
            return dbus.UInt64(self.approval_duration.total_seconds()
 
2045
                               * 1000)
985
2046
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
 
        # Emit D-Bus signal
987
 
        self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
 
                             dbus.UInt64(value, variant_level=1))
989
 
    
 
2047
 
990
2048
    # Name - property
991
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
 
2049
    @dbus_annotations(
 
2050
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2051
    @dbus_service_property(_interface, signature="s", access="read")
992
2052
    def Name_dbus_property(self):
993
2053
        return dbus.String(self.name)
994
 
    
 
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
 
995
2062
    # Fingerprint - property
996
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
 
2063
    @dbus_annotations(
 
2064
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2065
    @dbus_service_property(_interface, signature="s", access="read")
997
2066
    def Fingerprint_dbus_property(self):
998
2067
        return dbus.String(self.fingerprint)
999
 
    
 
2068
 
1000
2069
    # Host - property
1001
 
    @dbus_service_property(_interface, signature=u"s",
1002
 
                           access=u"readwrite")
 
2070
    @dbus_service_property(_interface,
 
2071
                           signature="s",
 
2072
                           access="readwrite")
1003
2073
    def Host_dbus_property(self, value=None):
1004
2074
        if value is None:       # get
1005
2075
            return dbus.String(self.host)
1006
 
        self.host = value
1007
 
        # Emit D-Bus signal
1008
 
        self.PropertyChanged(dbus.String(u"Host"),
1009
 
                             dbus.String(value, variant_level=1))
1010
 
    
 
2076
        self.host = str(value)
 
2077
 
1011
2078
    # Created - property
1012
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
 
2079
    @dbus_annotations(
 
2080
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2081
    @dbus_service_property(_interface, signature="s", access="read")
1013
2082
    def Created_dbus_property(self):
1014
 
        return dbus.String(self._datetime_to_dbus(self.created))
1015
 
    
 
2083
        return datetime_to_dbus(self.created)
 
2084
 
1016
2085
    # LastEnabled - property
1017
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
 
2086
    @dbus_service_property(_interface, signature="s", access="read")
1018
2087
    def LastEnabled_dbus_property(self):
1019
 
        if self.last_enabled is None:
1020
 
            return dbus.String(u"")
1021
 
        return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
 
    
 
2088
        return datetime_to_dbus(self.last_enabled)
 
2089
 
1023
2090
    # Enabled - property
1024
 
    @dbus_service_property(_interface, signature=u"b",
1025
 
                           access=u"readwrite")
 
2091
    @dbus_service_property(_interface,
 
2092
                           signature="b",
 
2093
                           access="readwrite")
1026
2094
    def Enabled_dbus_property(self, value=None):
1027
2095
        if value is None:       # get
1028
2096
            return dbus.Boolean(self.enabled)
1030
2098
            self.enable()
1031
2099
        else:
1032
2100
            self.disable()
1033
 
    
 
2101
 
1034
2102
    # LastCheckedOK - property
1035
 
    @dbus_service_property(_interface, signature=u"s",
1036
 
                           access=u"readwrite")
 
2103
    @dbus_service_property(_interface,
 
2104
                           signature="s",
 
2105
                           access="readwrite")
1037
2106
    def LastCheckedOK_dbus_property(self, value=None):
1038
2107
        if value is not None:
1039
2108
            self.checked_ok()
1040
2109
            return
1041
 
        if self.last_checked_ok is None:
1042
 
            return dbus.String(u"")
1043
 
        return dbus.String(self._datetime_to_dbus(self
1044
 
                                                  .last_checked_ok))
1045
 
    
 
2110
        return datetime_to_dbus(self.last_checked_ok)
 
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
 
 
2117
    # Expires - property
 
2118
    @dbus_service_property(_interface, signature="s", access="read")
 
2119
    def Expires_dbus_property(self):
 
2120
        return datetime_to_dbus(self.expires)
 
2121
 
1046
2122
    # LastApprovalRequest - property
1047
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
 
2123
    @dbus_service_property(_interface, signature="s", access="read")
1048
2124
    def LastApprovalRequest_dbus_property(self):
1049
 
        if self.last_approval_request is None:
1050
 
            return dbus.String(u"")
1051
 
        return dbus.String(self.
1052
 
                           _datetime_to_dbus(self
1053
 
                                             .last_approval_request))
1054
 
    
 
2125
        return datetime_to_dbus(self.last_approval_request)
 
2126
 
1055
2127
    # Timeout - property
1056
 
    @dbus_service_property(_interface, signature=u"t",
1057
 
                           access=u"readwrite")
 
2128
    @dbus_service_property(_interface,
 
2129
                           signature="t",
 
2130
                           access="readwrite")
1058
2131
    def Timeout_dbus_property(self, value=None):
1059
2132
        if value is None:       # get
1060
 
            return dbus.UInt64(self.timeout_milliseconds())
 
2133
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
 
2134
        old_timeout = self.timeout
1061
2135
        self.timeout = datetime.timedelta(0, 0, 0, value)
1062
 
        # Emit D-Bus signal
1063
 
        self.PropertyChanged(dbus.String(u"Timeout"),
1064
 
                             dbus.UInt64(value, variant_level=1))
1065
 
        if getattr(self, u"disable_initiator_tag", None) is None:
1066
 
            return
1067
 
        # Reschedule timeout
1068
 
        gobject.source_remove(self.disable_initiator_tag)
1069
 
        self.disable_initiator_tag = None
1070
 
        time_to_die = (self.
1071
 
                       _timedelta_to_milliseconds((self
1072
 
                                                   .last_checked_ok
1073
 
                                                   + self.timeout)
1074
 
                                                  - datetime.datetime
1075
 
                                                  .utcnow()))
1076
 
        if time_to_die <= 0:
1077
 
            # The timeout has passed
1078
 
            self.disable()
1079
 
        else:
1080
 
            self.disable_initiator_tag = (gobject.timeout_add
1081
 
                                          (time_to_die, self.disable))
1082
 
    
 
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
 
 
2152
    # ExtendedTimeout - property
 
2153
    @dbus_service_property(_interface,
 
2154
                           signature="t",
 
2155
                           access="readwrite")
 
2156
    def ExtendedTimeout_dbus_property(self, value=None):
 
2157
        if value is None:       # get
 
2158
            return dbus.UInt64(self.extended_timeout.total_seconds()
 
2159
                               * 1000)
 
2160
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
 
2161
 
1083
2162
    # Interval - property
1084
 
    @dbus_service_property(_interface, signature=u"t",
1085
 
                           access=u"readwrite")
 
2163
    @dbus_service_property(_interface,
 
2164
                           signature="t",
 
2165
                           access="readwrite")
1086
2166
    def Interval_dbus_property(self, value=None):
1087
2167
        if value is None:       # get
1088
 
            return dbus.UInt64(self.interval_milliseconds())
 
2168
            return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
2169
        self.interval = datetime.timedelta(0, 0, 0, value)
1090
 
        # Emit D-Bus signal
1091
 
        self.PropertyChanged(dbus.String(u"Interval"),
1092
 
                             dbus.UInt64(value, variant_level=1))
1093
 
        if getattr(self, u"checker_initiator_tag", None) is None:
 
2170
        if getattr(self, "checker_initiator_tag", None) is None:
1094
2171
            return
1095
 
        # Reschedule checker run
1096
 
        gobject.source_remove(self.checker_initiator_tag)
1097
 
        self.checker_initiator_tag = (gobject.timeout_add
1098
 
                                      (value, self.start_checker))
1099
 
        self.start_checker()    # Start one now, too
 
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
1100
2178
 
1101
2179
    # Checker - property
1102
 
    @dbus_service_property(_interface, signature=u"s",
1103
 
                           access=u"readwrite")
 
2180
    @dbus_service_property(_interface,
 
2181
                           signature="s",
 
2182
                           access="readwrite")
1104
2183
    def Checker_dbus_property(self, value=None):
1105
2184
        if value is None:       # get
1106
2185
            return dbus.String(self.checker_command)
1107
 
        self.checker_command = value
1108
 
        # Emit D-Bus signal
1109
 
        self.PropertyChanged(dbus.String(u"Checker"),
1110
 
                             dbus.String(self.checker_command,
1111
 
                                         variant_level=1))
1112
 
    
 
2186
        self.checker_command = str(value)
 
2187
 
1113
2188
    # CheckerRunning - property
1114
 
    @dbus_service_property(_interface, signature=u"b",
1115
 
                           access=u"readwrite")
 
2189
    @dbus_service_property(_interface,
 
2190
                           signature="b",
 
2191
                           access="readwrite")
1116
2192
    def CheckerRunning_dbus_property(self, value=None):
1117
2193
        if value is None:       # get
1118
2194
            return dbus.Boolean(self.checker is not None)
1120
2196
            self.start_checker()
1121
2197
        else:
1122
2198
            self.stop_checker()
1123
 
    
 
2199
 
1124
2200
    # ObjectPath - property
1125
 
    @dbus_service_property(_interface, signature=u"o", access=u"read")
 
2201
    @dbus_annotations(
 
2202
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
 
2203
         "org.freedesktop.DBus.Deprecated": "true"})
 
2204
    @dbus_service_property(_interface, signature="o", access="read")
1126
2205
    def ObjectPath_dbus_property(self):
1127
 
        return self.dbus_object_path # is already a dbus.ObjectPath
1128
 
    
 
2206
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2207
 
1129
2208
    # Secret = property
1130
 
    @dbus_service_property(_interface, signature=u"ay",
1131
 
                           access=u"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)
1132
2216
    def Secret_dbus_property(self, value):
1133
 
        self.secret = str(value)
1134
 
    
 
2217
        self.secret = bytes(value)
 
2218
 
1135
2219
    del _interface
1136
2220
 
1137
2221
 
1138
2222
class ProxyClient(object):
1139
 
    def __init__(self, child_pipe, fpr, address):
 
2223
    def __init__(self, child_pipe, key_id, fpr, address):
1140
2224
        self._pipe = child_pipe
1141
 
        self._pipe.send(('init', fpr, address))
 
2225
        self._pipe.send(('init', key_id, fpr, address))
1142
2226
        if not self._pipe.recv():
1143
 
            raise KeyError()
 
2227
            raise KeyError(key_id or fpr)
1144
2228
 
1145
2229
    def __getattribute__(self, name):
1146
 
        if(name == '_pipe'):
 
2230
        if name == '_pipe':
1147
2231
            return super(ProxyClient, self).__getattribute__(name)
1148
2232
        self._pipe.send(('getattr', name))
1149
2233
        data = self._pipe.recv()
1150
2234
        if data[0] == 'data':
1151
2235
            return data[1]
1152
2236
        if data[0] == 'function':
 
2237
 
1153
2238
            def func(*args, **kwargs):
1154
2239
                self._pipe.send(('funcall', name, args, kwargs))
1155
2240
                return self._pipe.recv()[1]
 
2241
 
1156
2242
            return func
1157
2243
 
1158
2244
    def __setattr__(self, name, value):
1159
 
        if(name == '_pipe'):
 
2245
        if name == '_pipe':
1160
2246
            return super(ProxyClient, self).__setattr__(name, value)
1161
2247
        self._pipe.send(('setattr', name, value))
1162
2248
 
1163
2249
 
1164
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
2251
    """A class to handle client connections.
1166
 
    
 
2252
 
1167
2253
    Instantiated once for each connection to handle it.
1168
2254
    Note: This will run in its own forked process."""
1169
 
    
 
2255
 
1170
2256
    def handle(self):
1171
2257
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
 
            logger.info(u"TCP connection from: %s",
1173
 
                        unicode(self.client_address))
1174
 
            logger.debug(u"Pipe FD: %d",
 
2258
            logger.info("TCP connection from: %s",
 
2259
                        str(self.client_address))
 
2260
            logger.debug("Pipe FD: %d",
1175
2261
                         self.server.child_pipe.fileno())
1176
2262
 
1177
 
            session = (gnutls.connection
1178
 
                       .ClientSession(self.request,
1179
 
                                      gnutls.connection
1180
 
                                      .X509Credentials()))
1181
 
 
1182
 
            # Note: gnutls.connection.X509Credentials is really a
1183
 
            # generic GnuTLS certificate credentials object so long as
1184
 
            # no X.509 keys are added to it.  Therefore, we can use it
1185
 
            # here despite using OpenPGP certificates.
1186
 
 
1187
 
            #priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
 
            #                      u"+AES-256-CBC", u"+SHA1",
1189
 
            #                      u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
 
            #                      u"+DHE-DSS"))
 
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"))
1191
2269
            # Use a fallback default, since this MUST be set.
1192
2270
            priority = self.server.gnutls_priority
1193
2271
            if priority is None:
1194
 
                priority = u"NORMAL"
1195
 
            (gnutls.library.functions
1196
 
             .gnutls_priority_set_direct(session._c_object,
1197
 
                                         priority, None))
 
2272
                priority = "NORMAL"
 
2273
            gnutls.priority_set_direct(session._c_object,
 
2274
                                       priority.encode("utf-8"),
 
2275
                                       None)
1198
2276
 
1199
2277
            # Start communication using the Mandos protocol
1200
2278
            # Get protocol number
1201
2279
            line = self.request.makefile().readline()
1202
 
            logger.debug(u"Protocol version: %r", line)
 
2280
            logger.debug("Protocol version: %r", line)
1203
2281
            try:
1204
2282
                if int(line.strip().split()[0]) > 1:
1205
 
                    raise RuntimeError
1206
 
            except (ValueError, IndexError, RuntimeError), error:
1207
 
                logger.error(u"Unknown protocol version: %s", error)
 
2283
                    raise RuntimeError(line)
 
2284
            except (ValueError, IndexError, RuntimeError) as error:
 
2285
                logger.error("Unknown protocol version: %s", error)
1208
2286
                return
1209
2287
 
1210
2288
            # Start GnuTLS connection
1211
2289
            try:
1212
2290
                session.handshake()
1213
 
            except gnutls.errors.GNUTLSError, error:
1214
 
                logger.warning(u"Handshake failed: %s", error)
 
2291
            except gnutls.Error as error:
 
2292
                logger.warning("Handshake failed: %s", error)
1215
2293
                # Do not run session.bye() here: the session is not
1216
2294
                # established.  Just abandon the request.
1217
2295
                return
1218
 
            logger.debug(u"Handshake succeeded")
 
2296
            logger.debug("Handshake succeeded")
1219
2297
 
1220
2298
            approval_required = False
1221
2299
            try:
1222
 
                try:
1223
 
                    fpr = self.fingerprint(self.peer_certificate
1224
 
                                           (session))
1225
 
                except (TypeError, gnutls.errors.GNUTLSError), error:
1226
 
                    logger.warning(u"Bad certificate: %s", error)
1227
 
                    return
1228
 
                logger.debug(u"Fingerprint: %s", fpr)
1229
 
 
1230
 
                try:
1231
 
                    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,
1232
2322
                                         self.client_address)
1233
2323
                except KeyError:
1234
2324
                    return
1235
 
                
 
2325
 
1236
2326
                if client.approval_delay:
1237
2327
                    delay = client.approval_delay
1238
2328
                    client.approvals_pending += 1
1239
2329
                    approval_required = True
1240
 
                
 
2330
 
1241
2331
                while True:
1242
2332
                    if not client.enabled:
1243
 
                        logger.warning(u"Client %s is disabled",
1244
 
                                       client.name)
 
2333
                        logger.info("Client %s is disabled",
 
2334
                                    client.name)
1245
2335
                        if self.server.use_dbus:
1246
2336
                            # Emit D-Bus signal
1247
 
                            client.Rejected("Disabled")                    
 
2337
                            client.Rejected("Disabled")
1248
2338
                        return
1249
 
                    
1250
 
                    if client._approved or not client.approval_delay:
1251
 
                        #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
1252
2342
                        break
1253
 
                    elif client._approved is None:
1254
 
                        logger.info(u"Client %s needs approval",
 
2343
                    elif client.approved is None:
 
2344
                        logger.info("Client %s needs approval",
1255
2345
                                    client.name)
1256
2346
                        if self.server.use_dbus:
1257
2347
                            # Emit D-Bus signal
1258
2348
                            client.NeedApproval(
1259
 
                                client.approval_delay_milliseconds(),
1260
 
                                client.approved_by_default)
 
2349
                                client.approval_delay.total_seconds()
 
2350
                                * 1000, client.approved_by_default)
1261
2351
                    else:
1262
 
                        logger.warning(u"Client %s was not approved",
 
2352
                        logger.warning("Client %s was not approved",
1263
2353
                                       client.name)
1264
2354
                        if self.server.use_dbus:
1265
2355
                            # Emit D-Bus signal
1266
2356
                            client.Rejected("Denied")
1267
2357
                        return
1268
 
                    
1269
 
                    #wait until timeout or approved
1270
 
                    #x = float(client._timedelta_to_milliseconds(delay))
 
2358
 
 
2359
                    # wait until timeout or approved
1271
2360
                    time = datetime.datetime.now()
1272
2361
                    client.changedstate.acquire()
1273
 
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
 
2362
                    client.changedstate.wait(delay.total_seconds())
1274
2363
                    client.changedstate.release()
1275
2364
                    time2 = datetime.datetime.now()
1276
2365
                    if (time2 - time) >= delay:
1286
2375
                            break
1287
2376
                    else:
1288
2377
                        delay -= time2 - time
1289
 
                
1290
 
                sent_size = 0
1291
 
                while sent_size < len(client.secret):
1292
 
                    try:
1293
 
                        sent = session.send(client.secret[sent_size:])
1294
 
                    except (gnutls.errors.GNUTLSError), error:
1295
 
                        logger.warning("gnutls send failed")
1296
 
                        return
1297
 
                    logger.debug(u"Sent: %d, remaining: %d",
1298
 
                                 sent, len(client.secret)
1299
 
                                 - (sent_size + sent))
1300
 
                    sent_size += sent
1301
 
 
1302
 
                logger.info(u"Sending secret to %s", client.name)
1303
 
                # bump the timeout as if seen
1304
 
                client.checked_ok()
 
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
 
 
2386
                logger.info("Sending secret to %s", client.name)
 
2387
                # bump the timeout using extended_timeout
 
2388
                client.bump_timeout(client.extended_timeout)
1305
2389
                if self.server.use_dbus:
1306
2390
                    # Emit D-Bus signal
1307
2391
                    client.GotSecret()
1308
 
            
 
2392
 
1309
2393
            finally:
1310
2394
                if approval_required:
1311
2395
                    client.approvals_pending -= 1
1312
2396
                try:
1313
2397
                    session.bye()
1314
 
                except (gnutls.errors.GNUTLSError), error:
1315
 
                    logger.warning("GnuTLS bye failed")
1316
 
    
 
2398
                except gnutls.Error as error:
 
2399
                    logger.warning("GnuTLS bye failed",
 
2400
                                   exc_info=error)
 
2401
 
1317
2402
    @staticmethod
1318
2403
    def peer_certificate(session):
1319
 
        "Return the peer's OpenPGP certificate as a bytestring"
1320
 
        # If not an OpenPGP certificate...
1321
 
        if (gnutls.library.functions
1322
 
            .gnutls_certificate_type_get(session._c_object)
1323
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
 
            # ...do the normal thing
1325
 
            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""
1326
2420
        list_size = ctypes.c_uint(1)
1327
 
        cert_list = (gnutls.library.functions
1328
 
                     .gnutls_certificate_get_peers
 
2421
        cert_list = (gnutls.certificate_get_peers
1329
2422
                     (session._c_object, ctypes.byref(list_size)))
1330
2423
        if not bool(cert_list) and list_size.value != 0:
1331
 
            raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
 
                                            u" certificate")
 
2424
            raise gnutls.Error("error getting peer certificate")
1333
2425
        if list_size.value == 0:
1334
2426
            return None
1335
2427
        cert = cert_list[0]
1336
2428
        return ctypes.string_at(cert.data, cert.size)
1337
 
    
 
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
 
1338
2464
    @staticmethod
1339
2465
    def fingerprint(openpgp):
1340
2466
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
1341
2467
        # New GnuTLS "datum" with the OpenPGP public key
1342
 
        datum = (gnutls.library.types
1343
 
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
 
                                             ctypes.POINTER
1345
 
                                             (ctypes.c_ubyte)),
1346
 
                                 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)))
1347
2472
        # New empty GnuTLS certificate
1348
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
 
        (gnutls.library.functions
1350
 
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
2473
        crt = gnutls.openpgp_crt_t()
 
2474
        gnutls.openpgp_crt_init(ctypes.byref(crt))
1351
2475
        # Import the OpenPGP public key into the certificate
1352
 
        (gnutls.library.functions
1353
 
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
 
                                    gnutls.library.constants
1355
 
                                    .GNUTLS_OPENPGP_FMT_RAW))
 
2476
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2477
                                  gnutls.OPENPGP_FMT_RAW)
1356
2478
        # Verify the self signature in the key
1357
2479
        crtverify = ctypes.c_uint()
1358
 
        (gnutls.library.functions
1359
 
         .gnutls_openpgp_crt_verify_self(crt, 0,
1360
 
                                         ctypes.byref(crtverify)))
 
2480
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2481
                                       ctypes.byref(crtverify))
1361
2482
        if crtverify.value != 0:
1362
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
 
            raise (gnutls.errors.CertificateSecurityError
1364
 
                   (u"Verify failed"))
 
2483
            gnutls.openpgp_crt_deinit(crt)
 
2484
            raise gnutls.CertificateSecurityError(code
 
2485
                                                  =crtverify.value)
1365
2486
        # New buffer for the fingerprint
1366
2487
        buf = ctypes.create_string_buffer(20)
1367
2488
        buf_len = ctypes.c_size_t()
1368
2489
        # Get the fingerprint from the certificate into the buffer
1369
 
        (gnutls.library.functions
1370
 
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
 
                                             ctypes.byref(buf_len)))
 
2490
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2491
                                           ctypes.byref(buf_len))
1372
2492
        # Deinit the certificate
1373
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2493
        gnutls.openpgp_crt_deinit(crt)
1374
2494
        # Convert the buffer to a Python bytestring
1375
2495
        fpr = ctypes.string_at(buf, buf_len.value)
1376
2496
        # Convert the bytestring to hexadecimal notation
1377
 
        hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
 
2497
        hex_fpr = binascii.hexlify(fpr).upper()
1378
2498
        return hex_fpr
1379
2499
 
1380
2500
 
1381
2501
class MultiprocessingMixIn(object):
1382
2502
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
 
2503
 
1383
2504
    def sub_process_main(self, request, address):
1384
2505
        try:
1385
2506
            self.finish_request(request, address)
1386
 
        except:
 
2507
        except Exception:
1387
2508
            self.handle_error(request, address)
1388
2509
        self.close_request(request)
1389
 
            
 
2510
 
1390
2511
    def process_request(self, request, address):
1391
2512
        """Start a new process to process the request."""
1392
 
        multiprocessing.Process(target = self.sub_process_main,
1393
 
                                args = (request, address)).start()
 
2513
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2514
                                       args=(request, address))
 
2515
        proc.start()
 
2516
        return proc
 
2517
 
1394
2518
 
1395
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
2520
    """ adds a pipe to the MixIn """
 
2521
 
1397
2522
    def process_request(self, request, client_address):
1398
2523
        """Overrides and wraps the original process_request().
1399
 
        
 
2524
 
1400
2525
        This function creates a new pipe in self.pipe
1401
2526
        """
1402
2527
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
2528
 
1404
 
        super(MultiprocessingMixInWithPipe,
1405
 
              self).process_request(request, client_address)
 
2529
        proc = MultiprocessingMixIn.process_request(self, request,
 
2530
                                                    client_address)
1406
2531
        self.child_pipe.close()
1407
 
        self.add_pipe(parent_pipe)
 
2532
        self.add_pipe(parent_pipe, proc)
1408
2533
 
1409
 
    def add_pipe(self, parent_pipe):
 
2534
    def add_pipe(self, parent_pipe, proc):
1410
2535
        """Dummy function; override as necessary"""
1411
 
        pass
 
2536
        raise NotImplementedError()
 
2537
 
1412
2538
 
1413
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
2540
                     socketserver.TCPServer, object):
1415
2541
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
1416
 
    
 
2542
 
1417
2543
    Attributes:
1418
2544
        enabled:        Boolean; whether this server is activated yet
1419
2545
        interface:      None or a network interface name (string)
1420
2546
        use_ipv6:       Boolean; to use IPv6 or not
1421
2547
    """
 
2548
 
1422
2549
    def __init__(self, server_address, RequestHandlerClass,
1423
 
                 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
        """
1424
2556
        self.interface = interface
1425
2557
        if use_ipv6:
1426
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.
1427
2586
        socketserver.TCPServer.__init__(self, server_address,
1428
2587
                                        RequestHandlerClass)
 
2588
 
1429
2589
    def server_bind(self):
1430
2590
        """This overrides the normal server_bind() function
1431
2591
        to bind to an interface if one was specified, and also NOT to
1432
2592
        bind to an address or port if they were not specified."""
 
2593
        global SO_BINDTODEVICE
1433
2594
        if self.interface is not None:
1434
2595
            if SO_BINDTODEVICE is None:
1435
 
                logger.error(u"SO_BINDTODEVICE does not exist;"
1436
 
                             u" cannot bind to interface %s",
1437
 
                             self.interface)
1438
 
            else:
1439
 
                try:
1440
 
                    self.socket.setsockopt(socket.SOL_SOCKET,
1441
 
                                           SO_BINDTODEVICE,
1442
 
                                           str(self.interface
1443
 
                                               + u'\0'))
1444
 
                except socket.error, error:
1445
 
                    if error[0] == errno.EPERM:
1446
 
                        logger.error(u"No permission to"
1447
 
                                     u" bind to interface %s",
1448
 
                                     self.interface)
1449
 
                    elif error[0] == errno.ENOPROTOOPT:
1450
 
                        logger.error(u"SO_BINDTODEVICE not available;"
1451
 
                                     u" cannot bind to interface %s",
1452
 
                                     self.interface)
1453
 
                    else:
1454
 
                        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
1455
2617
        # Only bind(2) the socket if we really need to.
1456
2618
        if self.server_address[0] or self.server_address[1]:
1457
2619
            if not self.server_address[0]:
1458
2620
                if self.address_family == socket.AF_INET6:
1459
 
                    any_address = u"::" # in6addr_any
 
2621
                    any_address = "::"  # in6addr_any
1460
2622
                else:
1461
 
                    any_address = socket.INADDR_ANY
 
2623
                    any_address = "0.0.0.0"  # INADDR_ANY
1462
2624
                self.server_address = (any_address,
1463
2625
                                       self.server_address[1])
1464
2626
            elif not self.server_address[1]:
1465
 
                self.server_address = (self.server_address[0],
1466
 
                                       0)
 
2627
                self.server_address = (self.server_address[0], 0)
1467
2628
#                 if self.interface:
1468
2629
#                     self.server_address = (self.server_address[0],
1469
2630
#                                            0, # port
1475
2636
 
1476
2637
class MandosServer(IPv6_TCPServer):
1477
2638
    """Mandos server.
1478
 
    
 
2639
 
1479
2640
    Attributes:
1480
2641
        clients:        set of Client objects
1481
2642
        gnutls_priority GnuTLS priority string
1482
2643
        use_dbus:       Boolean; to emit D-Bus signals or not
1483
 
    
1484
 
    Assumes a gobject.MainLoop event loop.
 
2644
 
 
2645
    Assumes a GLib.MainLoop event loop.
1485
2646
    """
 
2647
 
1486
2648
    def __init__(self, server_address, RequestHandlerClass,
1487
 
                 interface=None, use_ipv6=True, clients=None,
1488
 
                 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):
1489
2655
        self.enabled = False
1490
2656
        self.clients = clients
1491
2657
        if self.clients is None:
1492
 
            self.clients = set()
 
2658
            self.clients = {}
1493
2659
        self.use_dbus = use_dbus
1494
2660
        self.gnutls_priority = gnutls_priority
1495
2661
        IPv6_TCPServer.__init__(self, server_address,
1496
2662
                                RequestHandlerClass,
1497
 
                                interface = interface,
1498
 
                                use_ipv6 = use_ipv6)
 
2663
                                interface=interface,
 
2664
                                use_ipv6=use_ipv6,
 
2665
                                socketfd=socketfd)
 
2666
 
1499
2667
    def server_activate(self):
1500
2668
        if self.enabled:
1501
2669
            return socketserver.TCPServer.server_activate(self)
 
2670
 
1502
2671
    def enable(self):
1503
2672
        self.enabled = True
1504
 
    def add_pipe(self, parent_pipe):
 
2673
 
 
2674
    def add_pipe(self, parent_pipe, proc):
1505
2675
        # Call "handle_ipc" for both data and EOF events
1506
 
        gobject.io_add_watch(parent_pipe.fileno(),
1507
 
                             gobject.IO_IN | gobject.IO_HUP,
1508
 
                             functools.partial(self.handle_ipc,
1509
 
                                               parent_pipe = parent_pipe))
1510
 
        
1511
 
    def handle_ipc(self, source, condition, parent_pipe=None,
 
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,
1512
2686
                   client_object=None):
1513
 
        condition_names = {
1514
 
            gobject.IO_IN: u"IN",   # There is data to read.
1515
 
            gobject.IO_OUT: u"OUT", # Data can be written (without
1516
 
                                    # blocking).
1517
 
            gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
 
            gobject.IO_ERR: u"ERR", # Error condition.
1519
 
            gobject.IO_HUP: u"HUP"  # Hung up (the connection has been
1520
 
                                    # broken, usually for pipes and
1521
 
                                    # sockets).
1522
 
            }
1523
 
        conditions_string = ' | '.join(name
1524
 
                                       for cond, name in
1525
 
                                       condition_names.iteritems()
1526
 
                                       if cond & condition)
1527
 
        # error or the other end of multiprocessing.Pipe has closed
1528
 
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
 
2687
        # error, or the other end of multiprocessing.Pipe has closed
 
2688
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
 
2689
            # Wait for other process to exit
 
2690
            proc.join()
1529
2691
            return False
1530
 
        
 
2692
 
1531
2693
        # Read a request from the child
1532
2694
        request = parent_pipe.recv()
1533
2695
        command = request[0]
1534
 
        
 
2696
 
1535
2697
        if command == 'init':
1536
 
            fpr = request[1]
1537
 
            address = request[2]
1538
 
            
1539
 
            for c in self.clients:
1540
 
                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:
1541
2709
                    client = c
1542
2710
                    break
1543
2711
            else:
1544
 
                logger.warning(u"Client not found for fingerprint: %s, ad"
1545
 
                               u"dress: %s", fpr, address)
 
2712
                logger.info("Client not found for key ID: %s, address"
 
2713
                            ": %s", key_id or fpr, address)
1546
2714
                if self.use_dbus:
1547
2715
                    # Emit D-Bus signal
1548
 
                    mandos_dbus_service.ClientNotFound(fpr, address[0])
 
2716
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
 
2717
                                                       address[0])
1549
2718
                parent_pipe.send(False)
1550
2719
                return False
1551
 
            
1552
 
            gobject.io_add_watch(parent_pipe.fileno(),
1553
 
                                 gobject.IO_IN | gobject.IO_HUP,
1554
 
                                 functools.partial(self.handle_ipc,
1555
 
                                                   parent_pipe = parent_pipe,
1556
 
                                                   client_object = 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))
1557
2728
            parent_pipe.send(True)
1558
 
            # remove the old hook in favor of the new above hook on same fileno
 
2729
            # remove the old hook in favor of the new above hook on
 
2730
            # same fileno
1559
2731
            return False
1560
2732
        if command == 'funcall':
1561
2733
            funcname = request[1]
1562
2734
            args = request[2]
1563
2735
            kwargs = request[3]
1564
 
            
1565
 
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
 
2736
 
 
2737
            parent_pipe.send(('data', getattr(client_object,
 
2738
                                              funcname)(*args,
 
2739
                                                        **kwargs)))
1566
2740
 
1567
2741
        if command == 'getattr':
1568
2742
            attrname = request[1]
1569
 
            if callable(client_object.__getattribute__(attrname)):
1570
 
                parent_pipe.send(('function',))
 
2743
            if isinstance(client_object.__getattribute__(attrname),
 
2744
                          collections.Callable):
 
2745
                parent_pipe.send(('function', ))
1571
2746
            else:
1572
 
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1573
 
        
 
2747
                parent_pipe.send((
 
2748
                    'data', client_object.__getattribute__(attrname)))
 
2749
 
1574
2750
        if command == 'setattr':
1575
2751
            attrname = request[1]
1576
2752
            value = request[2]
1579
2755
        return True
1580
2756
 
1581
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
 
1582
2857
def string_to_delta(interval):
1583
2858
    """Parse a string and return a datetime.timedelta
1584
 
    
1585
 
    >>> string_to_delta(u'7d')
 
2859
 
 
2860
    >>> string_to_delta('7d')
1586
2861
    datetime.timedelta(7)
1587
 
    >>> string_to_delta(u'60s')
 
2862
    >>> string_to_delta('60s')
1588
2863
    datetime.timedelta(0, 60)
1589
 
    >>> string_to_delta(u'60m')
 
2864
    >>> string_to_delta('60m')
1590
2865
    datetime.timedelta(0, 3600)
1591
 
    >>> string_to_delta(u'24h')
 
2866
    >>> string_to_delta('24h')
1592
2867
    datetime.timedelta(1)
1593
 
    >>> string_to_delta(u'1w')
 
2868
    >>> string_to_delta('1w')
1594
2869
    datetime.timedelta(7)
1595
 
    >>> string_to_delta(u'5m 30s')
 
2870
    >>> string_to_delta('5m 30s')
1596
2871
    datetime.timedelta(0, 330)
1597
2872
    """
 
2873
 
 
2874
    try:
 
2875
        return rfc3339_duration_to_delta(interval)
 
2876
    except ValueError:
 
2877
        pass
 
2878
 
1598
2879
    timevalue = datetime.timedelta(0)
1599
2880
    for s in interval.split():
1600
2881
        try:
1601
 
            suffix = unicode(s[-1])
 
2882
            suffix = s[-1]
1602
2883
            value = int(s[:-1])
1603
 
            if suffix == u"d":
 
2884
            if suffix == "d":
1604
2885
                delta = datetime.timedelta(value)
1605
 
            elif suffix == u"s":
 
2886
            elif suffix == "s":
1606
2887
                delta = datetime.timedelta(0, value)
1607
 
            elif suffix == u"m":
 
2888
            elif suffix == "m":
1608
2889
                delta = datetime.timedelta(0, 0, 0, 0, value)
1609
 
            elif suffix == u"h":
 
2890
            elif suffix == "h":
1610
2891
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
 
            elif suffix == u"w":
 
2892
            elif suffix == "w":
1612
2893
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2894
            else:
1614
 
                raise ValueError(u"Unknown suffix %r" % suffix)
1615
 
        except (ValueError, IndexError), e:
1616
 
            raise ValueError(e.message)
 
2895
                raise ValueError("Unknown suffix {!r}".format(suffix))
 
2896
        except IndexError as e:
 
2897
            raise ValueError(*(e.args))
1617
2898
        timevalue += delta
1618
2899
    return timevalue
1619
2900
 
1620
2901
 
1621
 
def if_nametoindex(interface):
1622
 
    """Call the C function if_nametoindex(), or equivalent
1623
 
    
1624
 
    Note: This function cannot accept a unicode string."""
1625
 
    global if_nametoindex
1626
 
    try:
1627
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
1628
 
                          (ctypes.util.find_library(u"c"))
1629
 
                          .if_nametoindex)
1630
 
    except (OSError, AttributeError):
1631
 
        logger.warning(u"Doing if_nametoindex the hard way")
1632
 
        def if_nametoindex(interface):
1633
 
            "Get an interface index the hard way, i.e. using fcntl()"
1634
 
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
1635
 
            with contextlib.closing(socket.socket()) as s:
1636
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
 
                                    struct.pack(str(u"16s16x"),
1638
 
                                                interface))
1639
 
            interface_index = struct.unpack(str(u"I"),
1640
 
                                            ifreq[16:20])[0]
1641
 
            return interface_index
1642
 
    return if_nametoindex(interface)
1643
 
 
1644
 
 
1645
 
def daemon(nochdir = False, noclose = False):
 
2902
def daemon(nochdir=False, noclose=False):
1646
2903
    """See daemon(3).  Standard BSD Unix function.
1647
 
    
 
2904
 
1648
2905
    This should really exist as os.daemon, but it doesn't (yet)."""
1649
2906
    if os.fork():
1650
2907
        sys.exit()
1651
2908
    os.setsid()
1652
2909
    if not nochdir:
1653
 
        os.chdir(u"/")
 
2910
        os.chdir("/")
1654
2911
    if os.fork():
1655
2912
        sys.exit()
1656
2913
    if not noclose:
1657
2914
        # Close all standard open file descriptors
1658
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
2915
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2916
        if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2917
            raise OSError(errno.ENODEV,
1661
 
                          u"%s not a character device"
1662
 
                          % os.path.devnull)
 
2918
                          "{} not a character device"
 
2919
                          .format(os.devnull))
1663
2920
        os.dup2(null, sys.stdin.fileno())
1664
2921
        os.dup2(null, sys.stdout.fileno())
1665
2922
        os.dup2(null, sys.stderr.fileno())
1668
2925
 
1669
2926
 
1670
2927
def main():
1671
 
    
 
2928
 
1672
2929
    ##################################################################
1673
2930
    # Parsing of options, both command line and config file
1674
 
    
1675
 
    parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
 
    parser.add_option("-i", u"--interface", type=u"string",
1677
 
                      metavar="IF", help=u"Bind to interface IF")
1678
 
    parser.add_option("-a", u"--address", type=u"string",
1679
 
                      help=u"Address to listen for requests on")
1680
 
    parser.add_option("-p", u"--port", type=u"int",
1681
 
                      help=u"Port number to receive requests on")
1682
 
    parser.add_option("--check", action=u"store_true",
1683
 
                      help=u"Run self-test")
1684
 
    parser.add_option("--debug", action=u"store_true",
1685
 
                      help=u"Debug mode; run in foreground and log to"
1686
 
                      u" terminal")
1687
 
    parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
 
                      help=u"Debug level for stdout output")
1689
 
    parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
 
                      u" priority string (see GnuTLS documentation)")
1691
 
    parser.add_option("--servicename", type=u"string",
1692
 
                      metavar=u"NAME", help=u"Zeroconf service name")
1693
 
    parser.add_option("--configdir", type=u"string",
1694
 
                      default=u"/etc/mandos", metavar=u"DIR",
1695
 
                      help=u"Directory to search for configuration"
1696
 
                      u" files")
1697
 
    parser.add_option("--no-dbus", action=u"store_false",
1698
 
                      dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
 
                      u" system bus interface")
1700
 
    parser.add_option("--no-ipv6", action=u"store_false",
1701
 
                      dest=u"use_ipv6", help=u"Do not use IPv6")
1702
 
    options = parser.parse_args()[0]
1703
 
    
 
2931
 
 
2932
    parser = argparse.ArgumentParser()
 
2933
    parser.add_argument("-v", "--version", action="version",
 
2934
                        version="%(prog)s {}".format(version),
 
2935
                        help="show version number and exit")
 
2936
    parser.add_argument("-i", "--interface", metavar="IF",
 
2937
                        help="Bind to interface IF")
 
2938
    parser.add_argument("-a", "--address",
 
2939
                        help="Address to listen for requests on")
 
2940
    parser.add_argument("-p", "--port", type=int,
 
2941
                        help="Port number to receive requests on")
 
2942
    parser.add_argument("--check", action="store_true",
 
2943
                        help="Run self-test")
 
2944
    parser.add_argument("--debug", action="store_true",
 
2945
                        help="Debug mode; run in foreground and log"
 
2946
                        " to terminal", default=None)
 
2947
    parser.add_argument("--debuglevel", metavar="LEVEL",
 
2948
                        help="Debug level for stdout output")
 
2949
    parser.add_argument("--priority", help="GnuTLS"
 
2950
                        " priority string (see GnuTLS documentation)")
 
2951
    parser.add_argument("--servicename",
 
2952
                        metavar="NAME", help="Zeroconf service name")
 
2953
    parser.add_argument("--configdir",
 
2954
                        default="/etc/mandos", metavar="DIR",
 
2955
                        help="Directory to search for configuration"
 
2956
                        " files")
 
2957
    parser.add_argument("--no-dbus", action="store_false",
 
2958
                        dest="use_dbus", help="Do not provide D-Bus"
 
2959
                        " system bus interface", default=None)
 
2960
    parser.add_argument("--no-ipv6", action="store_false",
 
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
 
 
2977
    options = parser.parse_args()
 
2978
 
1704
2979
    if options.check:
1705
2980
        import doctest
1706
 
        doctest.testmod()
1707
 
        sys.exit()
1708
 
    
 
2981
        fail_count, test_count = doctest.testmod()
 
2982
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2983
 
1709
2984
    # Default values for config file for server-global settings
1710
 
    server_defaults = { u"interface": u"",
1711
 
                        u"address": u"",
1712
 
                        u"port": u"",
1713
 
                        u"debug": u"False",
1714
 
                        u"priority":
1715
 
                        u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
 
                        u"servicename": u"Mandos",
1717
 
                        u"use_dbus": u"True",
1718
 
                        u"use_ipv6": u"True",
1719
 
                        u"debuglevel": u"",
1720
 
                        }
1721
 
    
 
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
 
1722
3008
    # Parse config file for server-global settings
1723
3009
    server_config = configparser.SafeConfigParser(server_defaults)
1724
3010
    del server_defaults
1725
 
    server_config.read(os.path.join(options.configdir,
1726
 
                                    u"mandos.conf"))
 
3011
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
1727
3012
    # Convert the SafeConfigParser object to a dict
1728
3013
    server_settings = server_config.defaults()
1729
3014
    # Use the appropriate methods on the non-string config options
1730
 
    for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
 
        server_settings[option] = server_config.getboolean(u"DEFAULT",
 
3015
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3016
                   "foreground", "zeroconf"):
 
3017
        server_settings[option] = server_config.getboolean("DEFAULT",
1732
3018
                                                           option)
1733
3019
    if server_settings["port"]:
1734
 
        server_settings["port"] = server_config.getint(u"DEFAULT",
1735
 
                                                       u"port")
 
3020
        server_settings["port"] = server_config.getint("DEFAULT",
 
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"])
1736
3031
    del server_config
1737
 
    
 
3032
 
1738
3033
    # Override the settings from the config file with command line
1739
3034
    # options, if set.
1740
 
    for option in (u"interface", u"address", u"port", u"debug",
1741
 
                   u"priority", u"servicename", u"configdir",
1742
 
                   u"use_dbus", u"use_ipv6", u"debuglevel"):
 
3035
    for option in ("interface", "address", "port", "debug",
 
3036
                   "priority", "servicename", "configdir", "use_dbus",
 
3037
                   "use_ipv6", "debuglevel", "restore", "statedir",
 
3038
                   "socket", "foreground", "zeroconf"):
1743
3039
        value = getattr(options, option)
1744
3040
        if value is not None:
1745
3041
            server_settings[option] = value
1746
3042
    del options
1747
3043
    # Force all strings to be unicode
1748
3044
    for option in server_settings.keys():
1749
 
        if type(server_settings[option]) is str:
1750
 
            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
1751
3055
    # Now we have our good server settings in "server_settings"
1752
 
    
 
3056
 
1753
3057
    ##################################################################
1754
 
    
 
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
 
1755
3064
    # For convenience
1756
 
    debug = server_settings[u"debug"]
1757
 
    debuglevel = server_settings[u"debuglevel"]
1758
 
    use_dbus = server_settings[u"use_dbus"]
1759
 
    use_ipv6 = server_settings[u"use_ipv6"]
1760
 
 
1761
 
    if server_settings[u"servicename"] != u"Mandos":
1762
 
        syslogger.setFormatter(logging.Formatter
1763
 
                               (u'Mandos (%s) [%%(process)d]:'
1764
 
                                u' %%(levelname)s: %%(message)s'
1765
 
                                % server_settings[u"servicename"]))
1766
 
    
 
3065
    debug = server_settings["debug"]
 
3066
    debuglevel = server_settings["debuglevel"]
 
3067
    use_dbus = server_settings["use_dbus"]
 
3068
    use_ipv6 = server_settings["use_ipv6"]
 
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
 
 
3083
    if server_settings["servicename"] != "Mandos":
 
3084
        syslogger.setFormatter(
 
3085
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
3086
                              ' %(levelname)s: %(message)s'.format(
 
3087
                                  server_settings["servicename"])))
 
3088
 
1767
3089
    # Parse config file with clients
1768
 
    client_defaults = { u"timeout": u"1h",
1769
 
                        u"interval": u"5m",
1770
 
                        u"checker": u"fping -q -- %%(host)s",
1771
 
                        u"host": u"",
1772
 
                        u"approval_delay": u"0s",
1773
 
                        u"approval_duration": u"1s",
1774
 
                        }
1775
 
    client_config = configparser.SafeConfigParser(client_defaults)
1776
 
    client_config.read(os.path.join(server_settings[u"configdir"],
1777
 
                                    u"clients.conf"))
1778
 
    
 
3090
    client_config = configparser.SafeConfigParser(Client
 
3091
                                                  .client_defaults)
 
3092
    client_config.read(os.path.join(server_settings["configdir"],
 
3093
                                    "clients.conf"))
 
3094
 
1779
3095
    global mandos_dbus_service
1780
3096
    mandos_dbus_service = None
1781
 
    
1782
 
    tcp_server = MandosServer((server_settings[u"address"],
1783
 
                               server_settings[u"port"]),
1784
 
                              ClientHandler,
1785
 
                              interface=(server_settings[u"interface"]
1786
 
                                         or None),
1787
 
                              use_ipv6=use_ipv6,
1788
 
                              gnutls_priority=
1789
 
                              server_settings[u"priority"],
1790
 
                              use_dbus=use_dbus)
1791
 
    if not debug:
1792
 
        pidfilename = u"/var/run/mandos.pid"
1793
 
        try:
1794
 
            pidfile = open(pidfilename, u"w")
1795
 
        except IOError:
1796
 
            logger.error(u"Could not open file %r", pidfilename)
1797
 
    
1798
 
    try:
1799
 
        uid = pwd.getpwnam(u"_mandos").pw_uid
1800
 
        gid = pwd.getpwnam(u"_mandos").pw_gid
1801
 
    except KeyError:
1802
 
        try:
1803
 
            uid = pwd.getpwnam(u"mandos").pw_uid
1804
 
            gid = pwd.getpwnam(u"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
1805
3127
        except KeyError:
1806
 
            try:
1807
 
                uid = pwd.getpwnam(u"nobody").pw_uid
1808
 
                gid = pwd.getpwnam(u"nobody").pw_gid
1809
 
            except KeyError:
1810
 
                uid = 65534
1811
 
                gid = 65534
 
3128
            continue
 
3129
    else:
 
3130
        uid = 65534
 
3131
        gid = 65534
1812
3132
    try:
1813
3133
        os.setgid(gid)
1814
3134
        os.setuid(uid)
1815
 
    except OSError, error:
1816
 
        if error[0] != errno.EPERM:
1817
 
            raise error
1818
 
    
1819
 
    if not debug and not debuglevel:
1820
 
        syslogger.setLevel(logging.WARNING)
1821
 
        console.setLevel(logging.WARNING)
1822
 
    if debuglevel:
1823
 
        level = getattr(logging, debuglevel.upper())
1824
 
        syslogger.setLevel(level)
1825
 
        console.setLevel(level)
 
3135
        if debug:
 
3136
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3137
                                                             gid))
 
3138
    except OSError as error:
 
3139
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3140
                       .format(uid, gid, os.strerror(error.errno)))
 
3141
        if error.errno != errno.EPERM:
 
3142
            raise
1826
3143
 
1827
3144
    if debug:
1828
3145
        # Enable all possible GnuTLS debugging
1829
 
        
 
3146
 
1830
3147
        # "Use a log level over 10 to enable all debugging options."
1831
3148
        # - GnuTLS manual
1832
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
1833
 
        
1834
 
        @gnutls.library.types.gnutls_log_func
 
3149
        gnutls.global_set_log_level(11)
 
3150
 
 
3151
        @gnutls.log_func
1835
3152
        def debug_gnutls(level, string):
1836
 
            logger.debug(u"GnuTLS: %s", string[:-1])
1837
 
        
1838
 
        (gnutls.library.functions
1839
 
         .gnutls_global_set_log_function(debug_gnutls))
1840
 
        
 
3153
            logger.debug("GnuTLS: %s", string[:-1])
 
3154
 
 
3155
        gnutls.global_set_log_function(debug_gnutls)
 
3156
 
1841
3157
        # Redirect stdin so all checkers get /dev/null
1842
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
3158
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
3159
        os.dup2(null, sys.stdin.fileno())
1844
3160
        if null > 2:
1845
3161
            os.close(null)
1846
 
    else:
1847
 
        # No console logging
1848
 
        logger.removeHandler(console)
1849
 
    
 
3162
 
1850
3163
    # Need to fork before connecting to D-Bus
1851
 
    if not debug:
 
3164
    if not foreground:
1852
3165
        # Close all input and output, do double fork, etc.
1853
3166
        daemon()
1854
 
    
 
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
 
1855
3172
    global main_loop
1856
3173
    # From the Avahi example code
1857
 
    DBusGMainLoop(set_as_default=True )
1858
 
    main_loop = gobject.MainLoop()
 
3174
    DBusGMainLoop(set_as_default=True)
 
3175
    main_loop = GLib.MainLoop()
1859
3176
    bus = dbus.SystemBus()
1860
3177
    # End of Avahi example code
1861
3178
    if use_dbus:
1862
3179
        try:
1863
 
            bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1864
 
                                            bus, do_not_queue=True)
1865
 
        except dbus.exceptions.NameExistsException, e:
1866
 
            logger.error(unicode(e) + u", disabling D-Bus")
 
3180
            bus_name = dbus.service.BusName("se.recompile.Mandos",
 
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)
1867
3188
            use_dbus = False
1868
 
            server_settings[u"use_dbus"] = False
 
3189
            server_settings["use_dbus"] = False
1869
3190
            tcp_server.use_dbus = False
1870
 
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1871
 
    service = AvahiService(name = server_settings[u"servicename"],
1872
 
                           servicetype = u"_mandos._tcp",
1873
 
                           protocol = protocol, bus = bus)
1874
 
    if server_settings["interface"]:
1875
 
        service.interface = (if_nametoindex
1876
 
                             (str(server_settings[u"interface"])))
1877
 
    
 
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
 
1878
3202
    global multiprocessing_manager
1879
3203
    multiprocessing_manager = multiprocessing.Manager()
1880
 
    
 
3204
 
1881
3205
    client_class = Client
1882
3206
    if use_dbus:
1883
 
        client_class = functools.partial(ClientDBus, bus = bus)
1884
 
    def client_config_items(config, section):
1885
 
        special_settings = {
1886
 
            "approved_by_default":
1887
 
                lambda: config.getboolean(section,
1888
 
                                          "approved_by_default"),
1889
 
            }
1890
 
        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))
1891
3339
            try:
1892
 
                yield (name, special_settings[name]())
1893
 
            except KeyError:
1894
 
                yield (name, value)
1895
 
    
1896
 
    tcp_server.clients.update(set(
1897
 
            client_class(name = section,
1898
 
                         config= dict(client_config_items(
1899
 
                        client_config, section)))
1900
 
            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
 
1901
3365
    if not tcp_server.clients:
1902
 
        logger.warning(u"No clients defined")
1903
 
        
1904
 
    if not debug:
1905
 
        try:
1906
 
            with pidfile:
1907
 
                pid = os.getpid()
1908
 
                pidfile.write(str(pid) + "\n")
1909
 
            del pidfile
1910
 
        except IOError:
1911
 
            logger.error(u"Could not write to file %r with PID %d",
1912
 
                         pidfilename, pid)
1913
 
        except NameError:
1914
 
            # "pidfile" was never created
1915
 
            pass
 
3366
        logger.warning("No clients defined")
 
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
1916
3378
        del pidfilename
1917
 
        
1918
 
        signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
 
 
1920
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
 
    
 
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
 
1923
3384
    if use_dbus:
1924
 
        class MandosDBusService(dbus.service.Object):
 
3385
 
 
3386
        @alternate_dbus_interfaces(
 
3387
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3388
        class MandosDBusService(DBusObjectWithObjectManager):
1925
3389
            """A D-Bus proxy object"""
 
3390
 
1926
3391
            def __init__(self):
1927
 
                dbus.service.Object.__init__(self, bus, u"/")
1928
 
            _interface = u"se.bsnet.fukt.Mandos"
1929
 
            
1930
 
            @dbus.service.signal(_interface, signature=u"o")
 
3392
                dbus.service.Object.__init__(self, bus, "/")
 
3393
 
 
3394
            _interface = "se.recompile.Mandos"
 
3395
 
 
3396
            @dbus.service.signal(_interface, signature="o")
1931
3397
            def ClientAdded(self, objpath):
1932
3398
                "D-Bus signal"
1933
3399
                pass
1934
 
            
1935
 
            @dbus.service.signal(_interface, signature=u"ss")
1936
 
            def ClientNotFound(self, fingerprint, address):
 
3400
 
 
3401
            @dbus.service.signal(_interface, signature="ss")
 
3402
            def ClientNotFound(self, key_id, address):
1937
3403
                "D-Bus signal"
1938
3404
                pass
1939
 
            
1940
 
            @dbus.service.signal(_interface, signature=u"os")
 
3405
 
 
3406
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3407
                               "true"})
 
3408
            @dbus.service.signal(_interface, signature="os")
1941
3409
            def ClientRemoved(self, objpath, name):
1942
3410
                "D-Bus signal"
1943
3411
                pass
1944
 
            
1945
 
            @dbus.service.method(_interface, out_signature=u"ao")
 
3412
 
 
3413
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3414
                               "true"})
 
3415
            @dbus.service.method(_interface, out_signature="ao")
1946
3416
            def GetAllClients(self):
1947
3417
                "D-Bus method"
1948
 
                return dbus.Array(c.dbus_object_path
1949
 
                                  for c in tcp_server.clients)
1950
 
            
 
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"})
1951
3423
            @dbus.service.method(_interface,
1952
 
                                 out_signature=u"a{oa{sv}}")
 
3424
                                 out_signature="a{oa{sv}}")
1953
3425
            def GetAllClientsWithProperties(self):
1954
3426
                "D-Bus method"
1955
3427
                return dbus.Dictionary(
1956
 
                    ((c.dbus_object_path, c.GetAll(u""))
1957
 
                     for c in tcp_server.clients),
1958
 
                    signature=u"oa{sv}")
1959
 
            
1960
 
            @dbus.service.method(_interface, in_signature=u"o")
 
3428
                    {c.dbus_object_path: c.GetAll(
 
3429
                        "se.recompile.Mandos.Client")
 
3430
                     for c in tcp_server.clients.values()},
 
3431
                    signature="oa{sv}")
 
3432
 
 
3433
            @dbus.service.method(_interface, in_signature="o")
1961
3434
            def RemoveClient(self, object_path):
1962
3435
                "D-Bus method"
1963
 
                for c in tcp_server.clients:
 
3436
                for c in tcp_server.clients.values():
1964
3437
                    if c.dbus_object_path == object_path:
1965
 
                        tcp_server.clients.remove(c)
 
3438
                        del tcp_server.clients[c.name]
1966
3439
                        c.remove_from_connection()
1967
 
                        # Don't signal anything except ClientRemoved
 
3440
                        # Don't signal the disabling
1968
3441
                        c.disable(quiet=True)
1969
 
                        # Emit D-Bus signal
1970
 
                        self.ClientRemoved(object_path, c.name)
 
3442
                        # Emit D-Bus signal for removal
 
3443
                        self.client_removed_signal(c)
1971
3444
                        return
1972
3445
                raise KeyError(object_path)
1973
 
            
 
3446
 
1974
3447
            del _interface
1975
 
        
 
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
 
1976
3485
        mandos_dbus_service = MandosDBusService()
1977
 
    
 
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
 
1978
3492
    def cleanup():
1979
3493
        "Cleanup function; run on exit"
1980
 
        service.cleanup()
1981
 
        
 
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
1982
3556
        while tcp_server.clients:
1983
 
            client = tcp_server.clients.pop()
 
3557
            name, client = tcp_server.clients.popitem()
1984
3558
            if use_dbus:
1985
3559
                client.remove_from_connection()
1986
 
            client.disable_hook = None
1987
 
            # Don't signal anything except ClientRemoved
 
3560
            # Don't signal the disabling
1988
3561
            client.disable(quiet=True)
 
3562
            # Emit D-Bus signal for removal
1989
3563
            if use_dbus:
1990
 
                # Emit D-Bus signal
1991
 
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
 
                                                  client.name)
1993
 
    
 
3564
                mandos_dbus_service.client_removed_signal(client)
 
3565
        client_settings.clear()
 
3566
 
1994
3567
    atexit.register(cleanup)
1995
 
    
1996
 
    for client in tcp_server.clients:
 
3568
 
 
3569
    for client in tcp_server.clients.values():
1997
3570
        if use_dbus:
1998
 
            # Emit D-Bus signal
1999
 
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
 
        client.enable()
2001
 
    
 
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
 
2002
3577
    tcp_server.enable()
2003
3578
    tcp_server.server_activate()
2004
 
    
 
3579
 
2005
3580
    # Find out what port we got
2006
 
    service.port = tcp_server.socket.getsockname()[1]
 
3581
    if zeroconf:
 
3582
        service.port = tcp_server.socket.getsockname()[1]
2007
3583
    if use_ipv6:
2008
 
        logger.info(u"Now listening on address %r, port %d,"
2009
 
                    " flowinfo %d, scope_id %d"
2010
 
                    % tcp_server.socket.getsockname())
 
3584
        logger.info("Now listening on address %r, port %d,"
 
3585
                    " flowinfo %d, scope_id %d",
 
3586
                    *tcp_server.socket.getsockname())
2011
3587
    else:                       # IPv4
2012
 
        logger.info(u"Now listening on address %r, port %d"
2013
 
                    % tcp_server.socket.getsockname())
2014
 
    
2015
 
    #service.interface = tcp_server.socket.getsockname()[3]
2016
 
    
 
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
 
2017
3593
    try:
2018
 
        # From the Avahi example code
2019
 
        try:
2020
 
            service.activate()
2021
 
        except dbus.exceptions.DBusException, error:
2022
 
            logger.critical(u"DBusException: %s", error)
2023
 
            cleanup()
2024
 
            sys.exit(1)
2025
 
        # End of Avahi example code
2026
 
        
2027
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
 
                             lambda *args, **kwargs:
2029
 
                             (tcp_server.handle_request
2030
 
                              (*args[2:], **kwargs) or True))
2031
 
        
2032
 
        logger.debug(u"Starting main loop")
 
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
 
 
3609
        logger.debug("Starting main loop")
2033
3610
        main_loop.run()
2034
 
    except AvahiError, error:
2035
 
        logger.critical(u"AvahiError: %s", error)
 
3611
    except AvahiError as error:
 
3612
        logger.critical("Avahi Error", exc_info=error)
2036
3613
        cleanup()
2037
3614
        sys.exit(1)
2038
3615
    except KeyboardInterrupt:
2039
3616
        if debug:
2040
 
            print >> sys.stderr
2041
 
        logger.debug(u"Server received KeyboardInterrupt")
2042
 
    logger.debug(u"Server exiting")
 
3617
            print("", file=sys.stderr)
 
3618
        logger.debug("Server received KeyboardInterrupt")
 
3619
    logger.debug("Server exiting")
2043
3620
    # Must run before the D-Bus bus name gets deregistered
2044
3621
    cleanup()
2045
3622
 
 
3623
 
2046
3624
if __name__ == '__main__':
2047
3625
    main()