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  • Committer: Teddy Hogeborn
  • Date: 2011-11-26 23:08:17 UTC
  • mto: (518.1.8 mandos-persistent)
  • mto: This revision was merged to the branch mainline in revision 524.
  • Revision ID: teddy@recompile.se-20111126230817-tv08v831s2yltbkd
Make "enabled" a client config option.

* DBUS-API: Fix wording on "Expires" option.
* clients.conf (enabled): New.
* mandos (Client): "last_enabled" can now be None.
  (Client.__init__): Get "enabled" from config.  Only set
                     "last_enabled" and "expires" if enabled.
  (ClientDBus.Created_dbus_property): Removed redundant dbus.String().
  (ClientDBus.Interval_dbus_property): If changed, only reschedule
                                       checker if enabled.
  (main/special_settings): Added "enabled".
* mandos-clients.conf (OPTIONS): Added "enabled".

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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
 
3
4
4
# Mandos server - give out binary blobs to connecting clients.
5
 
#
 
5
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>.  This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
 
#
 
12
13
13
# Everything else is
14
 
# Copyright © 2008-2019 Teddy Hogeborn
15
 
# Copyright © 2008-2019 Björn Påhlsson
16
 
#
17
 
# This file is part of Mandos.
18
 
#
19
 
# Mandos is free software: you can redistribute it and/or modify it
20
 
# under the terms of the GNU General Public License as published by
 
14
# Copyright © 2008-2011 Teddy Hogeborn
 
15
# Copyright © 2008-2011 Björn Påhlsson
 
16
 
17
# This program is free software: you can redistribute it and/or modify
 
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
 
#     Mandos is distributed in the hope that it will be useful, but
25
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
22
#     This program is distributed in the hope that it will be useful,
 
23
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
27
25
#     GNU General Public License for more details.
28
 
#
 
26
29
27
# You should have received a copy of the GNU General Public License
30
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
31
 
#
 
28
# along with this program.  If not, see
 
29
# <http://www.gnu.org/licenses/>.
 
30
32
31
# Contact the authors at <mandos@recompile.se>.
33
 
#
 
32
34
33
 
35
34
from __future__ import (division, absolute_import, print_function,
36
35
                        unicode_literals)
37
36
 
38
 
try:
39
 
    from future_builtins import *
40
 
except ImportError:
41
 
    pass
42
 
 
43
 
try:
44
 
    import SocketServer as socketserver
45
 
except ImportError:
46
 
    import socketserver
 
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
 
try:
52
 
    import ConfigParser as configparser
53
 
except ImportError:
54
 
    import configparser
 
42
import gnutls.crypto
 
43
import gnutls.connection
 
44
import gnutls.errors
 
45
import gnutls.library.functions
 
46
import gnutls.library.constants
 
47
import gnutls.library.types
 
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
 
try:
70
 
    import cPickle as pickle
71
 
except ImportError:
72
 
    import pickle
 
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
 
import itertools
78
 
import collections
79
 
import codecs
80
68
 
81
69
import dbus
82
70
import dbus.service
83
 
import gi
84
 
from gi.repository import GLib
 
71
import gobject
 
72
import avahi
85
73
from dbus.mainloop.glib import DBusGMainLoop
86
74
import ctypes
87
75
import ctypes.util
88
76
import xml.dom.minidom
89
77
import inspect
 
78
import GnuPGInterface
90
79
 
91
 
# Try to find the value of SO_BINDTODEVICE:
92
80
try:
93
 
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
94
 
    # newer, and it is also the most natural place for it:
95
81
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
96
82
except AttributeError:
97
83
    try:
98
 
        # This is where SO_BINDTODEVICE was up to and including Python
99
 
        # 2.6, and also 3.2:
100
84
        from IN import SO_BINDTODEVICE
101
85
    except ImportError:
102
 
        # In Python 2.7 it seems to have been removed entirely.
103
 
        # Try running the C preprocessor:
104
 
        try:
105
 
            cc = subprocess.Popen(["cc", "--language=c", "-E",
106
 
                                   "/dev/stdin"],
107
 
                                  stdin=subprocess.PIPE,
108
 
                                  stdout=subprocess.PIPE)
109
 
            stdout = cc.communicate(
110
 
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
111
 
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
112
 
        except (OSError, ValueError, IndexError):
113
 
            # No value found
114
 
            SO_BINDTODEVICE = None
115
 
 
116
 
if sys.version_info.major == 2:
117
 
    str = unicode
118
 
 
119
 
if sys.version_info < (3, 2):
120
 
    configparser.Configparser = configparser.SafeConfigParser
121
 
 
122
 
version = "1.8.6"
 
86
        SO_BINDTODEVICE = None
 
87
 
 
88
 
 
89
version = "1.4.1"
123
90
stored_state_file = "clients.pickle"
124
91
 
125
92
logger = logging.getLogger()
126
 
syslogger = None
 
93
syslogger = (logging.handlers.SysLogHandler
 
94
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
95
              address = str("/dev/log")))
127
96
 
128
97
try:
129
 
    if_nametoindex = ctypes.cdll.LoadLibrary(
130
 
        ctypes.util.find_library("c")).if_nametoindex
 
98
    if_nametoindex = (ctypes.cdll.LoadLibrary
 
99
                      (ctypes.util.find_library("c"))
 
100
                      .if_nametoindex)
131
101
except (OSError, AttributeError):
132
 
 
133
102
    def if_nametoindex(interface):
134
103
        "Get an interface index the hard way, i.e. using fcntl()"
135
104
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
136
105
        with contextlib.closing(socket.socket()) as s:
137
106
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
138
 
                                struct.pack(b"16s16x", interface))
139
 
        interface_index = struct.unpack("I", ifreq[16:20])[0]
 
107
                                struct.pack(str("16s16x"),
 
108
                                            interface))
 
109
        interface_index = struct.unpack(str("I"),
 
110
                                        ifreq[16:20])[0]
140
111
        return interface_index
141
112
 
142
113
 
143
 
def copy_function(func):
144
 
    """Make a copy of a function"""
145
 
    if sys.version_info.major == 2:
146
 
        return types.FunctionType(func.func_code,
147
 
                                  func.func_globals,
148
 
                                  func.func_name,
149
 
                                  func.func_defaults,
150
 
                                  func.func_closure)
151
 
    else:
152
 
        return types.FunctionType(func.__code__,
153
 
                                  func.__globals__,
154
 
                                  func.__name__,
155
 
                                  func.__defaults__,
156
 
                                  func.__closure__)
157
 
 
158
 
 
159
 
def initlogger(debug, level=logging.WARNING):
 
114
def initlogger(level=logging.WARNING):
160
115
    """init logger and add loglevel"""
161
 
 
162
 
    global syslogger
163
 
    syslogger = (logging.handlers.SysLogHandler(
164
 
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
165
 
        address="/dev/log"))
 
116
    
166
117
    syslogger.setFormatter(logging.Formatter
167
118
                           ('Mandos [%(process)d]: %(levelname)s:'
168
119
                            ' %(message)s'))
169
120
    logger.addHandler(syslogger)
170
 
 
171
 
    if debug:
172
 
        console = logging.StreamHandler()
173
 
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
174
 
                                               ' [%(process)d]:'
175
 
                                               ' %(levelname)s:'
176
 
                                               ' %(message)s'))
177
 
        logger.addHandler(console)
 
121
    
 
122
    console = logging.StreamHandler()
 
123
    console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
 
124
                                           ' [%(process)d]:'
 
125
                                           ' %(levelname)s:'
 
126
                                           ' %(message)s'))
 
127
    logger.addHandler(console)
178
128
    logger.setLevel(level)
179
129
 
180
130
 
181
 
class PGPError(Exception):
182
 
    """Exception if encryption/decryption fails"""
 
131
class CryptoError(Exception):
183
132
    pass
184
133
 
185
134
 
186
 
class PGPEngine(object):
 
135
class Crypto(object):
187
136
    """A simple class for OpenPGP symmetric encryption & decryption"""
188
 
 
189
137
    def __init__(self):
 
138
        self.gnupg = GnuPGInterface.GnuPG()
190
139
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
191
 
        self.gpg = "gpg"
192
 
        try:
193
 
            output = subprocess.check_output(["gpgconf"])
194
 
            for line in output.splitlines():
195
 
                name, text, path = line.split(b":")
196
 
                if name == "gpg":
197
 
                    self.gpg = path
198
 
                    break
199
 
        except OSError as e:
200
 
            if e.errno != errno.ENOENT:
201
 
                raise
202
 
        self.gnupgargs = ['--batch',
203
 
                          '--homedir', self.tempdir,
204
 
                          '--force-mdc',
205
 
                          '--quiet']
206
 
        # Only GPG version 1 has the --no-use-agent option.
207
 
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
208
 
            self.gnupgargs.append("--no-use-agent")
209
 
 
 
140
        self.gnupg = GnuPGInterface.GnuPG()
 
141
        self.gnupg.options.meta_interactive = False
 
142
        self.gnupg.options.homedir = self.tempdir
 
143
        self.gnupg.options.extra_args.extend(['--force-mdc',
 
144
                                              '--quiet'])
 
145
    
210
146
    def __enter__(self):
211
147
        return self
212
 
 
213
 
    def __exit__(self, exc_type, exc_value, traceback):
 
148
    
 
149
    def __exit__ (self, exc_type, exc_value, traceback):
214
150
        self._cleanup()
215
151
        return False
216
 
 
 
152
    
217
153
    def __del__(self):
218
154
        self._cleanup()
219
 
 
 
155
    
220
156
    def _cleanup(self):
221
157
        if self.tempdir is not None:
222
158
            # Delete contents of tempdir
223
159
            for root, dirs, files in os.walk(self.tempdir,
224
 
                                             topdown=False):
 
160
                                             topdown = False):
225
161
                for filename in files:
226
162
                    os.remove(os.path.join(root, filename))
227
163
                for dirname in dirs:
229
165
            # Remove tempdir
230
166
            os.rmdir(self.tempdir)
231
167
            self.tempdir = None
232
 
 
 
168
    
233
169
    def password_encode(self, password):
234
170
        # Passphrase can not be empty and can not contain newlines or
235
171
        # NUL bytes.  So we prefix it and hex encode it.
236
 
        encoded = b"mandos" + binascii.hexlify(password)
237
 
        if len(encoded) > 2048:
238
 
            # GnuPG can't handle long passwords, so encode differently
239
 
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
240
 
                       .replace(b"\n", b"\\n")
241
 
                       .replace(b"\0", b"\\x00"))
242
 
        return encoded
243
 
 
 
172
        return b"mandos" + binascii.hexlify(password)
 
173
    
244
174
    def encrypt(self, data, password):
245
 
        passphrase = self.password_encode(password)
246
 
        with tempfile.NamedTemporaryFile(
247
 
                dir=self.tempdir) as passfile:
248
 
            passfile.write(passphrase)
249
 
            passfile.flush()
250
 
            proc = subprocess.Popen([self.gpg, '--symmetric',
251
 
                                     '--passphrase-file',
252
 
                                     passfile.name]
253
 
                                    + self.gnupgargs,
254
 
                                    stdin=subprocess.PIPE,
255
 
                                    stdout=subprocess.PIPE,
256
 
                                    stderr=subprocess.PIPE)
257
 
            ciphertext, err = proc.communicate(input=data)
258
 
        if proc.returncode != 0:
259
 
            raise PGPError(err)
 
175
        self.gnupg.passphrase = self.password_encode(password)
 
176
        with open(os.devnull) as devnull:
 
177
            try:
 
178
                proc = self.gnupg.run(['--symmetric'],
 
179
                                      create_fhs=['stdin', 'stdout'],
 
180
                                      attach_fhs={'stderr': devnull})
 
181
                with contextlib.closing(proc.handles['stdin']) as f:
 
182
                    f.write(data)
 
183
                with contextlib.closing(proc.handles['stdout']) as f:
 
184
                    ciphertext = f.read()
 
185
                proc.wait()
 
186
            except IOError as e:
 
187
                raise CryptoError(e)
 
188
        self.gnupg.passphrase = None
260
189
        return ciphertext
261
 
 
 
190
    
262
191
    def decrypt(self, data, password):
263
 
        passphrase = self.password_encode(password)
264
 
        with tempfile.NamedTemporaryFile(
265
 
                dir=self.tempdir) as passfile:
266
 
            passfile.write(passphrase)
267
 
            passfile.flush()
268
 
            proc = subprocess.Popen([self.gpg, '--decrypt',
269
 
                                     '--passphrase-file',
270
 
                                     passfile.name]
271
 
                                    + self.gnupgargs,
272
 
                                    stdin=subprocess.PIPE,
273
 
                                    stdout=subprocess.PIPE,
274
 
                                    stderr=subprocess.PIPE)
275
 
            decrypted_plaintext, err = proc.communicate(input=data)
276
 
        if proc.returncode != 0:
277
 
            raise PGPError(err)
 
192
        self.gnupg.passphrase = self.password_encode(password)
 
193
        with open(os.devnull) as devnull:
 
194
            try:
 
195
                proc = self.gnupg.run(['--decrypt'],
 
196
                                      create_fhs=['stdin', 'stdout'],
 
197
                                      attach_fhs={'stderr': devnull})
 
198
                with contextlib.closing(proc.handles['stdin'] ) as f:
 
199
                    f.write(data)
 
200
                with contextlib.closing(proc.handles['stdout']) as f:
 
201
                    decrypted_plaintext = f.read()
 
202
                proc.wait()
 
203
            except IOError as e:
 
204
                raise CryptoError(e)
 
205
        self.gnupg.passphrase = None
278
206
        return decrypted_plaintext
279
207
 
280
208
 
281
 
# Pretend that we have an Avahi module
282
 
class avahi(object):
283
 
    """This isn't so much a class as it is a module-like namespace."""
284
 
    IF_UNSPEC = -1               # avahi-common/address.h
285
 
    PROTO_UNSPEC = -1            # avahi-common/address.h
286
 
    PROTO_INET = 0               # avahi-common/address.h
287
 
    PROTO_INET6 = 1              # avahi-common/address.h
288
 
    DBUS_NAME = "org.freedesktop.Avahi"
289
 
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
290
 
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
291
 
    DBUS_PATH_SERVER = "/"
292
 
 
293
 
    @staticmethod
294
 
    def string_array_to_txt_array(t):
295
 
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
296
 
                           for s in t), signature="ay")
297
 
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
298
 
    ENTRY_GROUP_COLLISION = 3    # avahi-common/defs.h
299
 
    ENTRY_GROUP_FAILURE = 4      # avahi-common/defs.h
300
 
    SERVER_INVALID = 0           # avahi-common/defs.h
301
 
    SERVER_REGISTERING = 1       # avahi-common/defs.h
302
 
    SERVER_RUNNING = 2           # avahi-common/defs.h
303
 
    SERVER_COLLISION = 3         # avahi-common/defs.h
304
 
    SERVER_FAILURE = 4           # avahi-common/defs.h
305
 
 
306
209
 
307
210
class AvahiError(Exception):
308
211
    def __init__(self, value, *args, **kwargs):
309
212
        self.value = value
310
 
        return super(AvahiError, self).__init__(value, *args,
311
 
                                                **kwargs)
312
 
 
 
213
        super(AvahiError, self).__init__(value, *args, **kwargs)
 
214
    def __unicode__(self):
 
215
        return unicode(repr(self.value))
313
216
 
314
217
class AvahiServiceError(AvahiError):
315
218
    pass
316
219
 
317
 
 
318
220
class AvahiGroupError(AvahiError):
319
221
    pass
320
222
 
321
223
 
322
224
class AvahiService(object):
323
225
    """An Avahi (Zeroconf) service.
324
 
 
 
226
    
325
227
    Attributes:
326
228
    interface: integer; avahi.IF_UNSPEC or an interface index.
327
229
               Used to optionally bind to the specified interface.
328
230
    name: string; Example: 'Mandos'
329
231
    type: string; Example: '_mandos._tcp'.
330
 
     See <https://www.iana.org/assignments/service-names-port-numbers>
 
232
                  See <http://www.dns-sd.org/ServiceTypes.html>
331
233
    port: integer; what port to announce
332
234
    TXT: list of strings; TXT record for the service
333
235
    domain: string; Domain to publish on, default to .local if empty.
339
241
    server: D-Bus Server
340
242
    bus: dbus.SystemBus()
341
243
    """
342
 
 
343
 
    def __init__(self,
344
 
                 interface=avahi.IF_UNSPEC,
345
 
                 name=None,
346
 
                 servicetype=None,
347
 
                 port=None,
348
 
                 TXT=None,
349
 
                 domain="",
350
 
                 host="",
351
 
                 max_renames=32768,
352
 
                 protocol=avahi.PROTO_UNSPEC,
353
 
                 bus=None):
 
244
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
 
245
                 servicetype = None, port = None, TXT = None,
 
246
                 domain = "", host = "", max_renames = 32768,
 
247
                 protocol = avahi.PROTO_UNSPEC, bus = None):
354
248
        self.interface = interface
355
249
        self.name = name
356
250
        self.type = servicetype
365
259
        self.server = None
366
260
        self.bus = bus
367
261
        self.entry_group_state_changed_match = None
368
 
 
369
 
    def rename(self, remove=True):
 
262
    def rename(self):
370
263
        """Derived from the Avahi example code"""
371
264
        if self.rename_count >= self.max_renames:
372
265
            logger.critical("No suitable Zeroconf service name found"
373
266
                            " after %i retries, exiting.",
374
267
                            self.rename_count)
375
268
            raise AvahiServiceError("Too many renames")
376
 
        self.name = str(
377
 
            self.server.GetAlternativeServiceName(self.name))
378
 
        self.rename_count += 1
 
269
        self.name = unicode(self.server
 
270
                            .GetAlternativeServiceName(self.name))
379
271
        logger.info("Changing Zeroconf service name to %r ...",
380
272
                    self.name)
381
 
        if remove:
382
 
            self.remove()
 
273
        self.remove()
383
274
        try:
384
275
            self.add()
385
276
        except dbus.exceptions.DBusException as error:
386
 
            if (error.get_dbus_name()
387
 
                == "org.freedesktop.Avahi.CollisionError"):
388
 
                logger.info("Local Zeroconf service name collision.")
389
 
                return self.rename(remove=False)
390
 
            else:
391
 
                logger.critical("D-Bus Exception", exc_info=error)
392
 
                self.cleanup()
393
 
                os._exit(1)
394
 
 
 
277
            logger.critical("DBusException: %s", error)
 
278
            self.cleanup()
 
279
            os._exit(1)
 
280
        self.rename_count += 1
395
281
    def remove(self):
396
282
        """Derived from the Avahi example code"""
397
283
        if self.entry_group_state_changed_match is not None:
399
285
            self.entry_group_state_changed_match = None
400
286
        if self.group is not None:
401
287
            self.group.Reset()
402
 
 
403
288
    def add(self):
404
289
        """Derived from the Avahi example code"""
405
290
        self.remove()
422
307
            dbus.UInt16(self.port),
423
308
            avahi.string_array_to_txt_array(self.TXT))
424
309
        self.group.Commit()
425
 
 
426
310
    def entry_group_state_changed(self, state, error):
427
311
        """Derived from the Avahi example code"""
428
312
        logger.debug("Avahi entry group state change: %i", state)
429
 
 
 
313
        
430
314
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
431
315
            logger.debug("Zeroconf service established.")
432
316
        elif state == avahi.ENTRY_GROUP_COLLISION:
434
318
            self.rename()
435
319
        elif state == avahi.ENTRY_GROUP_FAILURE:
436
320
            logger.critical("Avahi: Error in group state changed %s",
437
 
                            str(error))
438
 
            raise AvahiGroupError("State changed: {!s}".format(error))
439
 
 
 
321
                            unicode(error))
 
322
            raise AvahiGroupError("State changed: %s"
 
323
                                  % unicode(error))
440
324
    def cleanup(self):
441
325
        """Derived from the Avahi example code"""
442
326
        if self.group is not None:
447
331
                pass
448
332
            self.group = None
449
333
        self.remove()
450
 
 
451
334
    def server_state_changed(self, state, error=None):
452
335
        """Derived from the Avahi example code"""
453
336
        logger.debug("Avahi server state change: %i", state)
454
 
        bad_states = {
455
 
            avahi.SERVER_INVALID: "Zeroconf server invalid",
456
 
            avahi.SERVER_REGISTERING: None,
457
 
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
458
 
            avahi.SERVER_FAILURE: "Zeroconf server failure",
459
 
        }
 
337
        bad_states = { avahi.SERVER_INVALID:
 
338
                           "Zeroconf server invalid",
 
339
                       avahi.SERVER_REGISTERING: None,
 
340
                       avahi.SERVER_COLLISION:
 
341
                           "Zeroconf server name collision",
 
342
                       avahi.SERVER_FAILURE:
 
343
                           "Zeroconf server failure" }
460
344
        if state in bad_states:
461
345
            if bad_states[state] is not None:
462
346
                if error is None:
465
349
                    logger.error(bad_states[state] + ": %r", error)
466
350
            self.cleanup()
467
351
        elif state == avahi.SERVER_RUNNING:
468
 
            try:
469
 
                self.add()
470
 
            except dbus.exceptions.DBusException as error:
471
 
                if (error.get_dbus_name()
472
 
                    == "org.freedesktop.Avahi.CollisionError"):
473
 
                    logger.info("Local Zeroconf service name"
474
 
                                " collision.")
475
 
                    return self.rename(remove=False)
476
 
                else:
477
 
                    logger.critical("D-Bus Exception", exc_info=error)
478
 
                    self.cleanup()
479
 
                    os._exit(1)
 
352
            self.add()
480
353
        else:
481
354
            if error is None:
482
355
                logger.debug("Unknown state: %r", state)
483
356
            else:
484
357
                logger.debug("Unknown state: %r: %r", state, error)
485
 
 
486
358
    def activate(self):
487
359
        """Derived from the Avahi example code"""
488
360
        if self.server is None:
492
364
                                    follow_name_owner_changes=True),
493
365
                avahi.DBUS_INTERFACE_SERVER)
494
366
        self.server.connect_to_signal("StateChanged",
495
 
                                      self.server_state_changed)
 
367
                                 self.server_state_changed)
496
368
        self.server_state_changed(self.server.GetState())
497
369
 
498
 
 
499
370
class AvahiServiceToSyslog(AvahiService):
500
 
    def rename(self, *args, **kwargs):
 
371
    def rename(self):
501
372
        """Add the new name to the syslog messages"""
502
 
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
503
 
        syslogger.setFormatter(logging.Formatter(
504
 
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
505
 
            .format(self.name)))
 
373
        ret = AvahiService.rename(self)
 
374
        syslogger.setFormatter(logging.Formatter
 
375
                               ('Mandos (%s) [%%(process)d]:'
 
376
                                ' %%(levelname)s: %%(message)s'
 
377
                                % self.name))
506
378
        return ret
507
379
 
508
 
 
509
 
# Pretend that we have a GnuTLS module
510
 
class gnutls(object):
511
 
    """This isn't so much a class as it is a module-like namespace."""
512
 
 
513
 
    library = ctypes.util.find_library("gnutls")
514
 
    if library is None:
515
 
        library = ctypes.util.find_library("gnutls-deb0")
516
 
    _library = ctypes.cdll.LoadLibrary(library)
517
 
    del library
518
 
 
519
 
    # Unless otherwise indicated, the constants and types below are
520
 
    # all from the gnutls/gnutls.h C header file.
521
 
 
522
 
    # Constants
523
 
    E_SUCCESS = 0
524
 
    E_INTERRUPTED = -52
525
 
    E_AGAIN = -28
526
 
    CRT_OPENPGP = 2
527
 
    CRT_RAWPK = 3
528
 
    CLIENT = 2
529
 
    SHUT_RDWR = 0
530
 
    CRD_CERTIFICATE = 1
531
 
    E_NO_CERTIFICATE_FOUND = -49
532
 
    X509_FMT_DER = 0
533
 
    NO_TICKETS = 1<<10
534
 
    ENABLE_RAWPK = 1<<18
535
 
    CTYPE_PEERS = 3
536
 
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
537
 
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
538
 
 
539
 
    # Types
540
 
    class session_int(ctypes.Structure):
541
 
        _fields_ = []
542
 
    session_t = ctypes.POINTER(session_int)
543
 
 
544
 
    class certificate_credentials_st(ctypes.Structure):
545
 
        _fields_ = []
546
 
    certificate_credentials_t = ctypes.POINTER(
547
 
        certificate_credentials_st)
548
 
    certificate_type_t = ctypes.c_int
549
 
 
550
 
    class datum_t(ctypes.Structure):
551
 
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
 
                    ('size', ctypes.c_uint)]
553
 
 
554
 
    class openpgp_crt_int(ctypes.Structure):
555
 
        _fields_ = []
556
 
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
 
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
558
 
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
 
    credentials_type_t = ctypes.c_int
560
 
    transport_ptr_t = ctypes.c_void_p
561
 
    close_request_t = ctypes.c_int
562
 
 
563
 
    # Exceptions
564
 
    class Error(Exception):
565
 
        def __init__(self, message=None, code=None, args=()):
566
 
            # Default usage is by a message string, but if a return
567
 
            # code is passed, convert it to a string with
568
 
            # gnutls.strerror()
569
 
            self.code = code
570
 
            if message is None and code is not None:
571
 
                message = gnutls.strerror(code)
572
 
            return super(gnutls.Error, self).__init__(
573
 
                message, *args)
574
 
 
575
 
    class CertificateSecurityError(Error):
576
 
        pass
577
 
 
578
 
    # Classes
579
 
    class Credentials(object):
580
 
        def __init__(self):
581
 
            self._c_object = gnutls.certificate_credentials_t()
582
 
            gnutls.certificate_allocate_credentials(
583
 
                ctypes.byref(self._c_object))
584
 
            self.type = gnutls.CRD_CERTIFICATE
585
 
 
586
 
        def __del__(self):
587
 
            gnutls.certificate_free_credentials(self._c_object)
588
 
 
589
 
    class ClientSession(object):
590
 
        def __init__(self, socket, credentials=None):
591
 
            self._c_object = gnutls.session_t()
592
 
            gnutls_flags = gnutls.CLIENT
593
 
            if gnutls.check_version(b"3.5.6"):
594
 
                gnutls_flags |= gnutls.NO_TICKETS
595
 
            if gnutls.has_rawpk:
596
 
                gnutls_flags |= gnutls.ENABLE_RAWPK
597
 
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
598
 
            del gnutls_flags
599
 
            gnutls.set_default_priority(self._c_object)
600
 
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
601
 
            gnutls.handshake_set_private_extensions(self._c_object,
602
 
                                                    True)
603
 
            self.socket = socket
604
 
            if credentials is None:
605
 
                credentials = gnutls.Credentials()
606
 
            gnutls.credentials_set(self._c_object, credentials.type,
607
 
                                   ctypes.cast(credentials._c_object,
608
 
                                               ctypes.c_void_p))
609
 
            self.credentials = credentials
610
 
 
611
 
        def __del__(self):
612
 
            gnutls.deinit(self._c_object)
613
 
 
614
 
        def handshake(self):
615
 
            return gnutls.handshake(self._c_object)
616
 
 
617
 
        def send(self, data):
618
 
            data = bytes(data)
619
 
            data_len = len(data)
620
 
            while data_len > 0:
621
 
                data_len -= gnutls.record_send(self._c_object,
622
 
                                               data[-data_len:],
623
 
                                               data_len)
624
 
 
625
 
        def bye(self):
626
 
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
627
 
 
628
 
    # Error handling functions
629
 
    def _error_code(result):
630
 
        """A function to raise exceptions on errors, suitable
631
 
        for the 'restype' attribute on ctypes functions"""
632
 
        if result >= 0:
633
 
            return result
634
 
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
635
 
            raise gnutls.CertificateSecurityError(code=result)
636
 
        raise gnutls.Error(code=result)
637
 
 
638
 
    def _retry_on_error(result, func, arguments):
639
 
        """A function to retry on some errors, suitable
640
 
        for the 'errcheck' attribute on ctypes functions"""
641
 
        while result < 0:
642
 
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
643
 
                return _error_code(result)
644
 
            result = func(*arguments)
645
 
        return result
646
 
 
647
 
    # Unless otherwise indicated, the function declarations below are
648
 
    # all from the gnutls/gnutls.h C header file.
649
 
 
650
 
    # Functions
651
 
    priority_set_direct = _library.gnutls_priority_set_direct
652
 
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
653
 
                                    ctypes.POINTER(ctypes.c_char_p)]
654
 
    priority_set_direct.restype = _error_code
655
 
 
656
 
    init = _library.gnutls_init
657
 
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
658
 
    init.restype = _error_code
659
 
 
660
 
    set_default_priority = _library.gnutls_set_default_priority
661
 
    set_default_priority.argtypes = [session_t]
662
 
    set_default_priority.restype = _error_code
663
 
 
664
 
    record_send = _library.gnutls_record_send
665
 
    record_send.argtypes = [session_t, ctypes.c_void_p,
666
 
                            ctypes.c_size_t]
667
 
    record_send.restype = ctypes.c_ssize_t
668
 
    record_send.errcheck = _retry_on_error
669
 
 
670
 
    certificate_allocate_credentials = (
671
 
        _library.gnutls_certificate_allocate_credentials)
672
 
    certificate_allocate_credentials.argtypes = [
673
 
        ctypes.POINTER(certificate_credentials_t)]
674
 
    certificate_allocate_credentials.restype = _error_code
675
 
 
676
 
    certificate_free_credentials = (
677
 
        _library.gnutls_certificate_free_credentials)
678
 
    certificate_free_credentials.argtypes = [
679
 
        certificate_credentials_t]
680
 
    certificate_free_credentials.restype = None
681
 
 
682
 
    handshake_set_private_extensions = (
683
 
        _library.gnutls_handshake_set_private_extensions)
684
 
    handshake_set_private_extensions.argtypes = [session_t,
685
 
                                                 ctypes.c_int]
686
 
    handshake_set_private_extensions.restype = None
687
 
 
688
 
    credentials_set = _library.gnutls_credentials_set
689
 
    credentials_set.argtypes = [session_t, credentials_type_t,
690
 
                                ctypes.c_void_p]
691
 
    credentials_set.restype = _error_code
692
 
 
693
 
    strerror = _library.gnutls_strerror
694
 
    strerror.argtypes = [ctypes.c_int]
695
 
    strerror.restype = ctypes.c_char_p
696
 
 
697
 
    certificate_type_get = _library.gnutls_certificate_type_get
698
 
    certificate_type_get.argtypes = [session_t]
699
 
    certificate_type_get.restype = _error_code
700
 
 
701
 
    certificate_get_peers = _library.gnutls_certificate_get_peers
702
 
    certificate_get_peers.argtypes = [session_t,
703
 
                                      ctypes.POINTER(ctypes.c_uint)]
704
 
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
705
 
 
706
 
    global_set_log_level = _library.gnutls_global_set_log_level
707
 
    global_set_log_level.argtypes = [ctypes.c_int]
708
 
    global_set_log_level.restype = None
709
 
 
710
 
    global_set_log_function = _library.gnutls_global_set_log_function
711
 
    global_set_log_function.argtypes = [log_func]
712
 
    global_set_log_function.restype = None
713
 
 
714
 
    deinit = _library.gnutls_deinit
715
 
    deinit.argtypes = [session_t]
716
 
    deinit.restype = None
717
 
 
718
 
    handshake = _library.gnutls_handshake
719
 
    handshake.argtypes = [session_t]
720
 
    handshake.restype = _error_code
721
 
    handshake.errcheck = _retry_on_error
722
 
 
723
 
    transport_set_ptr = _library.gnutls_transport_set_ptr
724
 
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
725
 
    transport_set_ptr.restype = None
726
 
 
727
 
    bye = _library.gnutls_bye
728
 
    bye.argtypes = [session_t, close_request_t]
729
 
    bye.restype = _error_code
730
 
    bye.errcheck = _retry_on_error
731
 
 
732
 
    check_version = _library.gnutls_check_version
733
 
    check_version.argtypes = [ctypes.c_char_p]
734
 
    check_version.restype = ctypes.c_char_p
735
 
 
736
 
    _need_version = b"3.3.0"
737
 
    if check_version(_need_version) is None:
738
 
        raise self.Error("Needs GnuTLS {} or later"
739
 
                         .format(_need_version))
740
 
 
741
 
    _tls_rawpk_version = b"3.6.6"
742
 
    has_rawpk = bool(check_version(_tls_rawpk_version))
743
 
 
744
 
    if has_rawpk:
745
 
        # Types
746
 
        class pubkey_st(ctypes.Structure):
747
 
            _fields = []
748
 
        pubkey_t = ctypes.POINTER(pubkey_st)
749
 
 
750
 
        x509_crt_fmt_t = ctypes.c_int
751
 
 
752
 
        # All the function declarations below are from gnutls/abstract.h
753
 
        pubkey_init = _library.gnutls_pubkey_init
754
 
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
755
 
        pubkey_init.restype = _error_code
756
 
 
757
 
        pubkey_import = _library.gnutls_pubkey_import
758
 
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
759
 
                                  x509_crt_fmt_t]
760
 
        pubkey_import.restype = _error_code
761
 
 
762
 
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
763
 
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
764
 
                                      ctypes.POINTER(ctypes.c_ubyte),
765
 
                                      ctypes.POINTER(ctypes.c_size_t)]
766
 
        pubkey_get_key_id.restype = _error_code
767
 
 
768
 
        pubkey_deinit = _library.gnutls_pubkey_deinit
769
 
        pubkey_deinit.argtypes = [pubkey_t]
770
 
        pubkey_deinit.restype = None
771
 
    else:
772
 
        # All the function declarations below are from gnutls/openpgp.h
773
 
 
774
 
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
775
 
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
776
 
        openpgp_crt_init.restype = _error_code
777
 
 
778
 
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
779
 
        openpgp_crt_import.argtypes = [openpgp_crt_t,
780
 
                                       ctypes.POINTER(datum_t),
781
 
                                       openpgp_crt_fmt_t]
782
 
        openpgp_crt_import.restype = _error_code
783
 
 
784
 
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
785
 
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
786
 
                                            ctypes.POINTER(ctypes.c_uint)]
787
 
        openpgp_crt_verify_self.restype = _error_code
788
 
 
789
 
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
790
 
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
791
 
        openpgp_crt_deinit.restype = None
792
 
 
793
 
        openpgp_crt_get_fingerprint = (
794
 
            _library.gnutls_openpgp_crt_get_fingerprint)
795
 
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
796
 
                                                ctypes.c_void_p,
797
 
                                                ctypes.POINTER(
798
 
                                                    ctypes.c_size_t)]
799
 
        openpgp_crt_get_fingerprint.restype = _error_code
800
 
 
801
 
    if check_version(b"3.6.4"):
802
 
        certificate_type_get2 = _library.gnutls_certificate_type_get2
803
 
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
804
 
        certificate_type_get2.restype = _error_code
805
 
 
806
 
    # Remove non-public functions
807
 
    del _error_code, _retry_on_error
808
 
 
809
 
 
810
 
def call_pipe(connection,       # : multiprocessing.Connection
811
 
              func, *args, **kwargs):
812
 
    """This function is meant to be called by multiprocessing.Process
813
 
 
814
 
    This function runs func(*args, **kwargs), and writes the resulting
815
 
    return value on the provided multiprocessing.Connection.
816
 
    """
817
 
    connection.send(func(*args, **kwargs))
818
 
    connection.close()
819
 
 
820
 
 
 
380
def _timedelta_to_milliseconds(td):
 
381
    "Convert a datetime.timedelta() to milliseconds"
 
382
    return ((td.days * 24 * 60 * 60 * 1000)
 
383
            + (td.seconds * 1000)
 
384
            + (td.microseconds // 1000))
 
385
        
821
386
class Client(object):
822
387
    """A representation of a client host served by this server.
823
 
 
 
388
    
824
389
    Attributes:
825
 
    approved:   bool(); 'None' if not yet approved/disapproved
 
390
    _approved:   bool(); 'None' if not yet approved/disapproved
826
391
    approval_delay: datetime.timedelta(); Time to wait for approval
827
392
    approval_duration: datetime.timedelta(); Duration of one approval
828
 
    checker: multiprocessing.Process(); a running checker process used
829
 
             to see if the client lives. 'None' if no process is
830
 
             running.
831
 
    checker_callback_tag: a GLib event source tag, or None
 
393
    checker:    subprocess.Popen(); a running checker process used
 
394
                                    to see if the client lives.
 
395
                                    'None' if no process is running.
 
396
    checker_callback_tag: a gobject event source tag, or None
832
397
    checker_command: string; External command which is run to check
833
398
                     if client lives.  %() expansions are done at
834
399
                     runtime with vars(self) as dict, so that for
835
400
                     instance %(name)s can be used in the command.
836
 
    checker_initiator_tag: a GLib event source tag, or None
 
401
    checker_initiator_tag: a gobject event source tag, or None
837
402
    created:    datetime.datetime(); (UTC) object creation
838
403
    client_structure: Object describing what attributes a client has
839
404
                      and is used for storing the client at exit
840
405
    current_checker_command: string; current running checker_command
841
 
    disable_initiator_tag: a GLib event source tag, or None
 
406
    disable_initiator_tag: a gobject event source tag, or None
842
407
    enabled:    bool()
843
408
    fingerprint: string (40 or 32 hexadecimal digits); used to
844
 
                 uniquely identify an OpenPGP client
845
 
    key_id: string (64 hexadecimal digits); used to uniquely identify
846
 
            a client using raw public keys
 
409
                 uniquely identify the client
847
410
    host:       string; available for use by the checker command
848
411
    interval:   datetime.timedelta(); How often to start a new checker
849
412
    last_approval_request: datetime.datetime(); (UTC) or None
850
413
    last_checked_ok: datetime.datetime(); (UTC) or None
 
414
 
851
415
    last_checker_status: integer between 0 and 255 reflecting exit
852
416
                         status of last checker. -1 reflects crashed
853
 
                         checker, -2 means no checker completed yet.
854
 
    last_checker_signal: The signal which killed the last checker, if
855
 
                         last_checker_status is -1
 
417
                         checker, or None.
856
418
    last_enabled: datetime.datetime(); (UTC) or None
857
419
    name:       string; from the config file, used in log messages and
858
420
                        D-Bus identifiers
859
421
    secret:     bytestring; sent verbatim (over TLS) to client
860
422
    timeout:    datetime.timedelta(); How long from last_checked_ok
861
423
                                      until this client is disabled
862
 
    extended_timeout:   extra long timeout when secret has been sent
 
424
    extended_timeout:   extra long timeout when password has been sent
863
425
    runtime_expansions: Allowed attributes for runtime expansion.
864
426
    expires:    datetime.datetime(); time (UTC) when a client will be
865
427
                disabled, or None
866
 
    server_settings: The server_settings dict from main()
867
428
    """
868
 
 
 
429
    
869
430
    runtime_expansions = ("approval_delay", "approval_duration",
870
 
                          "created", "enabled", "expires", "key_id",
871
 
                          "fingerprint", "host", "interval",
872
 
                          "last_approval_request", "last_checked_ok",
 
431
                          "created", "enabled", "fingerprint",
 
432
                          "host", "interval", "last_checked_ok",
873
433
                          "last_enabled", "name", "timeout")
874
 
    client_defaults = {
875
 
        "timeout": "PT5M",
876
 
        "extended_timeout": "PT15M",
877
 
        "interval": "PT2M",
878
 
        "checker": "fping -q -- %%(host)s",
879
 
        "host": "",
880
 
        "approval_delay": "PT0S",
881
 
        "approval_duration": "PT1S",
882
 
        "approved_by_default": "True",
883
 
        "enabled": "True",
884
 
    }
885
 
 
886
 
    @staticmethod
887
 
    def config_parser(config):
888
 
        """Construct a new dict of client settings of this form:
889
 
        { client_name: {setting_name: value, ...}, ...}
890
 
        with exceptions for any special settings as defined above.
891
 
        NOTE: Must be a pure function. Must return the same result
892
 
        value given the same arguments.
893
 
        """
894
 
        settings = {}
895
 
        for client_name in config.sections():
896
 
            section = dict(config.items(client_name))
897
 
            client = settings[client_name] = {}
898
 
 
899
 
            client["host"] = section["host"]
900
 
            # Reformat values from string types to Python types
901
 
            client["approved_by_default"] = config.getboolean(
902
 
                client_name, "approved_by_default")
903
 
            client["enabled"] = config.getboolean(client_name,
904
 
                                                  "enabled")
905
 
 
906
 
            # Uppercase and remove spaces from key_id and fingerprint
907
 
            # for later comparison purposes with return value from the
908
 
            # key_id() and fingerprint() functions
909
 
            client["key_id"] = (section.get("key_id", "").upper()
910
 
                                .replace(" ", ""))
911
 
            client["fingerprint"] = (section["fingerprint"].upper()
912
 
                                     .replace(" ", ""))
913
 
            if "secret" in section:
914
 
                client["secret"] = codecs.decode(section["secret"]
915
 
                                                 .encode("utf-8"),
916
 
                                                 "base64")
917
 
            elif "secfile" in section:
918
 
                with open(os.path.expanduser(os.path.expandvars
919
 
                                             (section["secfile"])),
920
 
                          "rb") as secfile:
921
 
                    client["secret"] = secfile.read()
922
 
            else:
923
 
                raise TypeError("No secret or secfile for section {}"
924
 
                                .format(section))
925
 
            client["timeout"] = string_to_delta(section["timeout"])
926
 
            client["extended_timeout"] = string_to_delta(
927
 
                section["extended_timeout"])
928
 
            client["interval"] = string_to_delta(section["interval"])
929
 
            client["approval_delay"] = string_to_delta(
930
 
                section["approval_delay"])
931
 
            client["approval_duration"] = string_to_delta(
932
 
                section["approval_duration"])
933
 
            client["checker_command"] = section["checker"]
934
 
            client["last_approval_request"] = None
935
 
            client["last_checked_ok"] = None
936
 
            client["last_checker_status"] = -2
937
 
 
938
 
        return settings
939
 
 
940
 
    def __init__(self, settings, name=None, server_settings=None):
 
434
    
 
435
    def timeout_milliseconds(self):
 
436
        "Return the 'timeout' attribute in milliseconds"
 
437
        return _timedelta_to_milliseconds(self.timeout)
 
438
    
 
439
    def extended_timeout_milliseconds(self):
 
440
        "Return the 'extended_timeout' attribute in milliseconds"
 
441
        return _timedelta_to_milliseconds(self.extended_timeout)
 
442
    
 
443
    def interval_milliseconds(self):
 
444
        "Return the 'interval' attribute in milliseconds"
 
445
        return _timedelta_to_milliseconds(self.interval)
 
446
    
 
447
    def approval_delay_milliseconds(self):
 
448
        return _timedelta_to_milliseconds(self.approval_delay)
 
449
    
 
450
    def __init__(self, name = None, config=None):
 
451
        """Note: the 'checker' key in 'config' sets the
 
452
        'checker_command' attribute and *not* the 'checker'
 
453
        attribute."""
941
454
        self.name = name
942
 
        if server_settings is None:
943
 
            server_settings = {}
944
 
        self.server_settings = server_settings
945
 
        # adding all client settings
946
 
        for setting, value in settings.items():
947
 
            setattr(self, setting, value)
948
 
 
949
 
        if self.enabled:
950
 
            if not hasattr(self, "last_enabled"):
951
 
                self.last_enabled = datetime.datetime.utcnow()
952
 
            if not hasattr(self, "expires"):
953
 
                self.expires = (datetime.datetime.utcnow()
954
 
                                + self.timeout)
955
 
        else:
956
 
            self.last_enabled = None
957
 
            self.expires = None
958
 
 
 
455
        if config is None:
 
456
            config = {}
959
457
        logger.debug("Creating client %r", self.name)
960
 
        logger.debug("  Key ID: %s", self.key_id)
 
458
        # Uppercase and remove spaces from fingerprint for later
 
459
        # comparison purposes with return value from the fingerprint()
 
460
        # function
 
461
        self.fingerprint = (config["fingerprint"].upper()
 
462
                            .replace(" ", ""))
961
463
        logger.debug("  Fingerprint: %s", self.fingerprint)
962
 
        self.created = settings.get("created",
963
 
                                    datetime.datetime.utcnow())
964
 
 
965
 
        # attributes specific for this server instance
 
464
        if "secret" in config:
 
465
            self.secret = config["secret"].decode("base64")
 
466
        elif "secfile" in config:
 
467
            with open(os.path.expanduser(os.path.expandvars
 
468
                                         (config["secfile"])),
 
469
                      "rb") as secfile:
 
470
                self.secret = secfile.read()
 
471
        else:
 
472
            raise TypeError("No secret or secfile for client %s"
 
473
                            % self.name)
 
474
        self.host = config.get("host", "")
 
475
        self.created = datetime.datetime.utcnow()
 
476
        self.enabled = config.get("enabled", True)
 
477
        self.last_approval_request = None
 
478
        if self.enabled:
 
479
            self.last_enabled = datetime.datetime.utcnow()
 
480
        else:
 
481
            self.last_enabled = None
 
482
        self.last_checked_ok = None
 
483
        self.last_checker_status = None
 
484
        self.timeout = string_to_delta(config["timeout"])
 
485
        self.extended_timeout = string_to_delta(config
 
486
                                                ["extended_timeout"])
 
487
        self.interval = string_to_delta(config["interval"])
966
488
        self.checker = None
967
489
        self.checker_initiator_tag = None
968
490
        self.disable_initiator_tag = None
 
491
        if self.enabled:
 
492
            self.expires = datetime.datetime.utcnow() + self.timeout
 
493
        else:
 
494
            self.expires = None
969
495
        self.checker_callback_tag = None
 
496
        self.checker_command = config["checker"]
970
497
        self.current_checker_command = None
971
 
        self.approved = None
 
498
        self._approved = None
 
499
        self.approved_by_default = config.get("approved_by_default",
 
500
                                              True)
972
501
        self.approvals_pending = 0
973
 
        self.changedstate = multiprocessing_manager.Condition(
974
 
            multiprocessing_manager.Lock())
975
 
        self.client_structure = [attr
976
 
                                 for attr in self.__dict__.keys()
 
502
        self.approval_delay = string_to_delta(
 
503
            config["approval_delay"])
 
504
        self.approval_duration = string_to_delta(
 
505
            config["approval_duration"])
 
506
        self.changedstate = (multiprocessing_manager
 
507
                             .Condition(multiprocessing_manager
 
508
                                        .Lock()))
 
509
        self.client_structure = [attr for attr in
 
510
                                 self.__dict__.iterkeys()
977
511
                                 if not attr.startswith("_")]
978
512
        self.client_structure.append("client_structure")
979
 
 
980
 
        for name, t in inspect.getmembers(
981
 
                type(self), lambda obj: isinstance(obj, property)):
 
513
        
 
514
        for name, t in inspect.getmembers(type(self),
 
515
                                          lambda obj:
 
516
                                              isinstance(obj,
 
517
                                                         property)):
982
518
            if not name.startswith("_"):
983
519
                self.client_structure.append(name)
984
 
 
 
520
    
985
521
    # Send notice to process children that client state has changed
986
522
    def send_changedstate(self):
987
523
        with self.changedstate:
988
524
            self.changedstate.notify_all()
989
 
 
 
525
    
990
526
    def enable(self):
991
527
        """Start this client's checker and timeout hooks"""
992
528
        if getattr(self, "enabled", False):
993
529
            # Already enabled
994
530
            return
 
531
        self.send_changedstate()
995
532
        self.expires = datetime.datetime.utcnow() + self.timeout
996
533
        self.enabled = True
997
534
        self.last_enabled = datetime.datetime.utcnow()
998
535
        self.init_checker()
999
 
        self.send_changedstate()
1000
 
 
 
536
    
1001
537
    def disable(self, quiet=True):
1002
538
        """Disable this client."""
1003
539
        if not getattr(self, "enabled", False):
1004
540
            return False
1005
541
        if not quiet:
 
542
            self.send_changedstate()
 
543
        if not quiet:
1006
544
            logger.info("Disabling client %s", self.name)
1007
 
        if getattr(self, "disable_initiator_tag", None) is not None:
1008
 
            GLib.source_remove(self.disable_initiator_tag)
 
545
        if getattr(self, "disable_initiator_tag", False):
 
546
            gobject.source_remove(self.disable_initiator_tag)
1009
547
            self.disable_initiator_tag = None
1010
548
        self.expires = None
1011
 
        if getattr(self, "checker_initiator_tag", None) is not None:
1012
 
            GLib.source_remove(self.checker_initiator_tag)
 
549
        if getattr(self, "checker_initiator_tag", False):
 
550
            gobject.source_remove(self.checker_initiator_tag)
1013
551
            self.checker_initiator_tag = None
1014
552
        self.stop_checker()
1015
553
        self.enabled = False
1016
 
        if not quiet:
1017
 
            self.send_changedstate()
1018
 
        # Do not run this again if called by a GLib.timeout_add
 
554
        # Do not run this again if called by a gobject.timeout_add
1019
555
        return False
1020
 
 
 
556
    
1021
557
    def __del__(self):
1022
558
        self.disable()
1023
 
 
 
559
    
1024
560
    def init_checker(self):
1025
561
        # Schedule a new checker to be started an 'interval' from now,
1026
562
        # and every interval from then on.
1027
 
        if self.checker_initiator_tag is not None:
1028
 
            GLib.source_remove(self.checker_initiator_tag)
1029
 
        self.checker_initiator_tag = GLib.timeout_add(
1030
 
            int(self.interval.total_seconds() * 1000),
1031
 
            self.start_checker)
 
563
        self.checker_initiator_tag = (gobject.timeout_add
 
564
                                      (self.interval_milliseconds(),
 
565
                                       self.start_checker))
1032
566
        # Schedule a disable() when 'timeout' has passed
1033
 
        if self.disable_initiator_tag is not None:
1034
 
            GLib.source_remove(self.disable_initiator_tag)
1035
 
        self.disable_initiator_tag = GLib.timeout_add(
1036
 
            int(self.timeout.total_seconds() * 1000), self.disable)
 
567
        self.disable_initiator_tag = (gobject.timeout_add
 
568
                                   (self.timeout_milliseconds(),
 
569
                                    self.disable))
1037
570
        # Also start a new checker *right now*.
1038
571
        self.start_checker()
1039
 
 
1040
 
    def checker_callback(self, source, condition, connection,
1041
 
                         command):
 
572
    
 
573
    def checker_callback(self, pid, condition, command):
1042
574
        """The checker has completed, so take appropriate actions."""
1043
 
        # Read return code from connection (see call_pipe)
1044
 
        returncode = connection.recv()
1045
 
        connection.close()
1046
 
        self.checker.join()
1047
575
        self.checker_callback_tag = None
1048
576
        self.checker = None
1049
 
 
1050
 
        if returncode >= 0:
1051
 
            self.last_checker_status = returncode
1052
 
            self.last_checker_signal = None
 
577
        if os.WIFEXITED(condition):
 
578
            self.last_checker_status =  os.WEXITSTATUS(condition)
1053
579
            if self.last_checker_status == 0:
1054
580
                logger.info("Checker for %(name)s succeeded",
1055
581
                            vars(self))
1056
582
                self.checked_ok()
1057
583
            else:
1058
 
                logger.info("Checker for %(name)s failed", vars(self))
 
584
                logger.info("Checker for %(name)s failed",
 
585
                            vars(self))
1059
586
        else:
1060
587
            self.last_checker_status = -1
1061
 
            self.last_checker_signal = -returncode
1062
588
            logger.warning("Checker for %(name)s crashed?",
1063
589
                           vars(self))
1064
 
        return False
1065
 
 
1066
 
    def checked_ok(self):
1067
 
        """Assert that the client has been seen, alive and well."""
1068
 
        self.last_checked_ok = datetime.datetime.utcnow()
1069
 
        self.last_checker_status = 0
1070
 
        self.last_checker_signal = None
1071
 
        self.bump_timeout()
1072
 
 
1073
 
    def bump_timeout(self, timeout=None):
1074
 
        """Bump up the timeout for this client."""
 
590
    
 
591
    def checked_ok(self, timeout=None):
 
592
        """Bump up the timeout for this client.
 
593
        
 
594
        This should only be called when the client has been seen,
 
595
        alive and well.
 
596
        """
1075
597
        if timeout is None:
1076
598
            timeout = self.timeout
 
599
        self.last_checked_ok = datetime.datetime.utcnow()
1077
600
        if self.disable_initiator_tag is not None:
1078
 
            GLib.source_remove(self.disable_initiator_tag)
1079
 
            self.disable_initiator_tag = None
 
601
            gobject.source_remove(self.disable_initiator_tag)
1080
602
        if getattr(self, "enabled", False):
1081
 
            self.disable_initiator_tag = GLib.timeout_add(
1082
 
                int(timeout.total_seconds() * 1000), self.disable)
 
603
            self.disable_initiator_tag = (gobject.timeout_add
 
604
                                          (_timedelta_to_milliseconds
 
605
                                           (timeout), self.disable))
1083
606
            self.expires = datetime.datetime.utcnow() + timeout
1084
 
 
 
607
    
1085
608
    def need_approval(self):
1086
609
        self.last_approval_request = datetime.datetime.utcnow()
1087
 
 
 
610
    
1088
611
    def start_checker(self):
1089
612
        """Start a new checker subprocess if one is not running.
1090
 
 
 
613
        
1091
614
        If a checker already exists, leave it running and do
1092
615
        nothing."""
1093
616
        # The reason for not killing a running checker is that if we
1094
 
        # did that, and if a checker (for some reason) started running
1095
 
        # slowly and taking more than 'interval' time, then the client
1096
 
        # would inevitably timeout, since no checker would get a
1097
 
        # chance to run to completion.  If we instead leave running
 
617
        # did that, then if a checker (for some reason) started
 
618
        # running slowly and taking more than 'interval' time, the
 
619
        # client would inevitably timeout, since no checker would get
 
620
        # a chance to run to completion.  If we instead leave running
1098
621
        # checkers alone, the checker would have to take more time
1099
622
        # than 'timeout' for the client to be disabled, which is as it
1100
623
        # should be.
1101
 
 
1102
 
        if self.checker is not None and not self.checker.is_alive():
1103
 
            logger.warning("Checker was not alive; joining")
1104
 
            self.checker.join()
1105
 
            self.checker = None
 
624
        
 
625
        # If a checker exists, make sure it is not a zombie
 
626
        try:
 
627
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
628
        except (AttributeError, OSError) as error:
 
629
            if (isinstance(error, OSError)
 
630
                and error.errno != errno.ECHILD):
 
631
                raise error
 
632
        else:
 
633
            if pid:
 
634
                logger.warning("Checker was a zombie")
 
635
                gobject.source_remove(self.checker_callback_tag)
 
636
                self.checker_callback(pid, status,
 
637
                                      self.current_checker_command)
1106
638
        # Start a new checker if needed
1107
639
        if self.checker is None:
1108
 
            # Escape attributes for the shell
1109
 
            escaped_attrs = {
1110
 
                attr: re.escape(str(getattr(self, attr)))
1111
 
                for attr in self.runtime_expansions}
1112
640
            try:
1113
 
                command = self.checker_command % escaped_attrs
1114
 
            except TypeError as error:
1115
 
                logger.error('Could not format string "%s"',
1116
 
                             self.checker_command,
1117
 
                             exc_info=error)
1118
 
                return True     # Try again later
 
641
                # In case checker_command has exactly one % operator
 
642
                command = self.checker_command % self.host
 
643
            except TypeError:
 
644
                # Escape attributes for the shell
 
645
                escaped_attrs = dict(
 
646
                    (attr,
 
647
                     re.escape(unicode(str(getattr(self, attr, "")),
 
648
                                       errors=
 
649
                                       'replace')))
 
650
                    for attr in
 
651
                    self.runtime_expansions)
 
652
                
 
653
                try:
 
654
                    command = self.checker_command % escaped_attrs
 
655
                except TypeError as error:
 
656
                    logger.error('Could not format string "%s":'
 
657
                                 ' %s', self.checker_command, error)
 
658
                    return True # Try again later
1119
659
            self.current_checker_command = command
1120
 
            logger.info("Starting checker %r for %s", command,
1121
 
                        self.name)
1122
 
            # We don't need to redirect stdout and stderr, since
1123
 
            # in normal mode, that is already done by daemon(),
1124
 
            # and in debug mode we don't want to.  (Stdin is
1125
 
            # always replaced by /dev/null.)
1126
 
            # The exception is when not debugging but nevertheless
1127
 
            # running in the foreground; use the previously
1128
 
            # created wnull.
1129
 
            popen_args = {"close_fds": True,
1130
 
                          "shell": True,
1131
 
                          "cwd": "/"}
1132
 
            if (not self.server_settings["debug"]
1133
 
                and self.server_settings["foreground"]):
1134
 
                popen_args.update({"stdout": wnull,
1135
 
                                   "stderr": wnull})
1136
 
            pipe = multiprocessing.Pipe(duplex=False)
1137
 
            self.checker = multiprocessing.Process(
1138
 
                target=call_pipe,
1139
 
                args=(pipe[1], subprocess.call, command),
1140
 
                kwargs=popen_args)
1141
 
            self.checker.start()
1142
 
            self.checker_callback_tag = GLib.io_add_watch(
1143
 
                pipe[0].fileno(), GLib.IO_IN,
1144
 
                self.checker_callback, pipe[0], command)
1145
 
        # Re-run this periodically if run by GLib.timeout_add
 
660
            try:
 
661
                logger.info("Starting checker %r for %s",
 
662
                            command, self.name)
 
663
                # We don't need to redirect stdout and stderr, since
 
664
                # in normal mode, that is already done by daemon(),
 
665
                # and in debug mode we don't want to.  (Stdin is
 
666
                # always replaced by /dev/null.)
 
667
                self.checker = subprocess.Popen(command,
 
668
                                                close_fds=True,
 
669
                                                shell=True, cwd="/")
 
670
                self.checker_callback_tag = (gobject.child_watch_add
 
671
                                             (self.checker.pid,
 
672
                                              self.checker_callback,
 
673
                                              data=command))
 
674
                # The checker may have completed before the gobject
 
675
                # watch was added.  Check for this.
 
676
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
677
                if pid:
 
678
                    gobject.source_remove(self.checker_callback_tag)
 
679
                    self.checker_callback(pid, status, command)
 
680
            except OSError as error:
 
681
                logger.error("Failed to start subprocess: %s",
 
682
                             error)
 
683
        # Re-run this periodically if run by gobject.timeout_add
1146
684
        return True
1147
 
 
 
685
    
1148
686
    def stop_checker(self):
1149
687
        """Force the checker process, if any, to stop."""
1150
688
        if self.checker_callback_tag:
1151
 
            GLib.source_remove(self.checker_callback_tag)
 
689
            gobject.source_remove(self.checker_callback_tag)
1152
690
            self.checker_callback_tag = None
1153
691
        if getattr(self, "checker", None) is None:
1154
692
            return
1155
693
        logger.debug("Stopping checker for %(name)s", vars(self))
1156
 
        self.checker.terminate()
 
694
        try:
 
695
            os.kill(self.checker.pid, signal.SIGTERM)
 
696
            #time.sleep(0.5)
 
697
            #if self.checker.poll() is None:
 
698
            #    os.kill(self.checker.pid, signal.SIGKILL)
 
699
        except OSError as error:
 
700
            if error.errno != errno.ESRCH: # No such process
 
701
                raise
1157
702
        self.checker = None
1158
703
 
1159
704
 
1160
 
def dbus_service_property(dbus_interface,
1161
 
                          signature="v",
1162
 
                          access="readwrite",
1163
 
                          byte_arrays=False):
 
705
def dbus_service_property(dbus_interface, signature="v",
 
706
                          access="readwrite", byte_arrays=False):
1164
707
    """Decorators for marking methods of a DBusObjectWithProperties to
1165
708
    become properties on the D-Bus.
1166
 
 
 
709
    
1167
710
    The decorated method will be called with no arguments by "Get"
1168
711
    and with one argument by "Set".
1169
 
 
 
712
    
1170
713
    The parameters, where they are supported, are the same as
1171
714
    dbus.service.method, except there is only "signature", since the
1172
715
    type from Get() and the type sent to Set() is the same.
1175
718
    # "Set" method, so we fail early here:
1176
719
    if byte_arrays and signature != "ay":
1177
720
        raise ValueError("Byte arrays not supported for non-'ay'"
1178
 
                         " signature {!r}".format(signature))
1179
 
 
 
721
                         " signature %r" % signature)
1180
722
    def decorator(func):
1181
723
        func._dbus_is_property = True
1182
724
        func._dbus_interface = dbus_interface
1185
727
        func._dbus_name = func.__name__
1186
728
        if func._dbus_name.endswith("_dbus_property"):
1187
729
            func._dbus_name = func._dbus_name[:-14]
1188
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1189
 
        return func
1190
 
 
1191
 
    return decorator
1192
 
 
1193
 
 
1194
 
def dbus_interface_annotations(dbus_interface):
1195
 
    """Decorator for marking functions returning interface annotations
1196
 
 
1197
 
    Usage:
1198
 
 
1199
 
    @dbus_interface_annotations("org.example.Interface")
1200
 
    def _foo(self):  # Function name does not matter
1201
 
        return {"org.freedesktop.DBus.Deprecated": "true",
1202
 
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
1203
 
                    "false"}
1204
 
    """
1205
 
 
1206
 
    def decorator(func):
1207
 
        func._dbus_is_interface = True
1208
 
        func._dbus_interface = dbus_interface
1209
 
        func._dbus_name = dbus_interface
1210
 
        return func
1211
 
 
1212
 
    return decorator
1213
 
 
1214
 
 
1215
 
def dbus_annotations(annotations):
1216
 
    """Decorator to annotate D-Bus methods, signals or properties
1217
 
    Usage:
1218
 
 
1219
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1220
 
                       "org.freedesktop.DBus.Property."
1221
 
                       "EmitsChangedSignal": "false"})
1222
 
    @dbus_service_property("org.example.Interface", signature="b",
1223
 
                           access="r")
1224
 
    def Property_dbus_property(self):
1225
 
        return dbus.Boolean(False)
1226
 
 
1227
 
    See also the DBusObjectWithAnnotations class.
1228
 
    """
1229
 
 
1230
 
    def decorator(func):
1231
 
        func._dbus_annotations = annotations
1232
 
        return func
1233
 
 
 
730
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
731
        return func
1234
732
    return decorator
1235
733
 
1236
734
 
1237
735
class DBusPropertyException(dbus.exceptions.DBusException):
1238
736
    """A base class for D-Bus property-related exceptions
1239
737
    """
1240
 
    pass
 
738
    def __unicode__(self):
 
739
        return unicode(str(self))
1241
740
 
1242
741
 
1243
742
class DBusPropertyAccessException(DBusPropertyException):
1252
751
    pass
1253
752
 
1254
753
 
1255
 
class DBusObjectWithAnnotations(dbus.service.Object):
1256
 
    """A D-Bus object with annotations.
1257
 
 
1258
 
    Classes inheriting from this can use the dbus_annotations
1259
 
    decorator to add annotations to methods or signals.
1260
 
    """
1261
 
 
1262
 
    @staticmethod
1263
 
    def _is_dbus_thing(thing):
1264
 
        """Returns a function testing if an attribute is a D-Bus thing
1265
 
 
1266
 
        If called like _is_dbus_thing("method") it returns a function
1267
 
        suitable for use as predicate to inspect.getmembers().
1268
 
        """
1269
 
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1270
 
                                   False)
1271
 
 
1272
 
    def _get_all_dbus_things(self, thing):
1273
 
        """Returns a generator of (name, attribute) pairs
1274
 
        """
1275
 
        return ((getattr(athing.__get__(self), "_dbus_name", name),
1276
 
                 athing.__get__(self))
1277
 
                for cls in self.__class__.__mro__
1278
 
                for name, athing in
1279
 
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
1280
 
 
1281
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1282
 
                         out_signature="s",
1283
 
                         path_keyword='object_path',
1284
 
                         connection_keyword='connection')
1285
 
    def Introspect(self, object_path, connection):
1286
 
        """Overloading of standard D-Bus method.
1287
 
 
1288
 
        Inserts annotation tags on methods and signals.
1289
 
        """
1290
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
1291
 
                                                   connection)
1292
 
        try:
1293
 
            document = xml.dom.minidom.parseString(xmlstring)
1294
 
 
1295
 
            for if_tag in document.getElementsByTagName("interface"):
1296
 
                # Add annotation tags
1297
 
                for typ in ("method", "signal"):
1298
 
                    for tag in if_tag.getElementsByTagName(typ):
1299
 
                        annots = dict()
1300
 
                        for name, prop in (self.
1301
 
                                           _get_all_dbus_things(typ)):
1302
 
                            if (name == tag.getAttribute("name")
1303
 
                                and prop._dbus_interface
1304
 
                                == if_tag.getAttribute("name")):
1305
 
                                annots.update(getattr(
1306
 
                                    prop, "_dbus_annotations", {}))
1307
 
                        for name, value in annots.items():
1308
 
                            ann_tag = document.createElement(
1309
 
                                "annotation")
1310
 
                            ann_tag.setAttribute("name", name)
1311
 
                            ann_tag.setAttribute("value", value)
1312
 
                            tag.appendChild(ann_tag)
1313
 
                # Add interface annotation tags
1314
 
                for annotation, value in dict(
1315
 
                    itertools.chain.from_iterable(
1316
 
                        annotations().items()
1317
 
                        for name, annotations
1318
 
                        in self._get_all_dbus_things("interface")
1319
 
                        if name == if_tag.getAttribute("name")
1320
 
                        )).items():
1321
 
                    ann_tag = document.createElement("annotation")
1322
 
                    ann_tag.setAttribute("name", annotation)
1323
 
                    ann_tag.setAttribute("value", value)
1324
 
                    if_tag.appendChild(ann_tag)
1325
 
                # Fix argument name for the Introspect method itself
1326
 
                if (if_tag.getAttribute("name")
1327
 
                    == dbus.INTROSPECTABLE_IFACE):
1328
 
                    for cn in if_tag.getElementsByTagName("method"):
1329
 
                        if cn.getAttribute("name") == "Introspect":
1330
 
                            for arg in cn.getElementsByTagName("arg"):
1331
 
                                if (arg.getAttribute("direction")
1332
 
                                    == "out"):
1333
 
                                    arg.setAttribute("name",
1334
 
                                                     "xml_data")
1335
 
            xmlstring = document.toxml("utf-8")
1336
 
            document.unlink()
1337
 
        except (AttributeError, xml.dom.DOMException,
1338
 
                xml.parsers.expat.ExpatError) as error:
1339
 
            logger.error("Failed to override Introspection method",
1340
 
                         exc_info=error)
1341
 
        return xmlstring
1342
 
 
1343
 
 
1344
 
class DBusObjectWithProperties(DBusObjectWithAnnotations):
 
754
class DBusObjectWithProperties(dbus.service.Object):
1345
755
    """A D-Bus object with properties.
1346
 
 
 
756
    
1347
757
    Classes inheriting from this can use the dbus_service_property
1348
758
    decorator to expose methods as D-Bus properties.  It exposes the
1349
759
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1350
760
    """
1351
 
 
 
761
    
 
762
    @staticmethod
 
763
    def _is_dbus_property(obj):
 
764
        return getattr(obj, "_dbus_is_property", False)
 
765
    
 
766
    def _get_all_dbus_properties(self):
 
767
        """Returns a generator of (name, attribute) pairs
 
768
        """
 
769
        return ((prop.__get__(self)._dbus_name, prop.__get__(self))
 
770
                for cls in self.__class__.__mro__
 
771
                for name, prop in
 
772
                inspect.getmembers(cls, self._is_dbus_property))
 
773
    
1352
774
    def _get_dbus_property(self, interface_name, property_name):
1353
775
        """Returns a bound method if one exists which is a D-Bus
1354
776
        property with the specified name and interface.
1355
777
        """
1356
 
        for cls in self.__class__.__mro__:
1357
 
            for name, value in inspect.getmembers(
1358
 
                    cls, self._is_dbus_thing("property")):
 
778
        for cls in  self.__class__.__mro__:
 
779
            for name, value in (inspect.getmembers
 
780
                                (cls, self._is_dbus_property)):
1359
781
                if (value._dbus_name == property_name
1360
782
                    and value._dbus_interface == interface_name):
1361
783
                    return value.__get__(self)
1362
 
 
 
784
        
1363
785
        # No such property
1364
 
        raise DBusPropertyNotFound("{}:{}.{}".format(
1365
 
            self.dbus_object_path, interface_name, property_name))
1366
 
 
1367
 
    @classmethod
1368
 
    def _get_all_interface_names(cls):
1369
 
        """Get a sequence of all interfaces supported by an object"""
1370
 
        return (name for name in set(getattr(getattr(x, attr),
1371
 
                                             "_dbus_interface", None)
1372
 
                                     for x in (inspect.getmro(cls))
1373
 
                                     for attr in dir(x))
1374
 
                if name is not None)
1375
 
 
1376
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1377
 
                         in_signature="ss",
 
786
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
 
787
                                   + interface_name + "."
 
788
                                   + property_name)
 
789
    
 
790
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1378
791
                         out_signature="v")
1379
792
    def Get(self, interface_name, property_name):
1380
793
        """Standard D-Bus property Get() method, see D-Bus standard.
1386
799
        if not hasattr(value, "variant_level"):
1387
800
            return value
1388
801
        return type(value)(value, variant_level=value.variant_level+1)
1389
 
 
 
802
    
1390
803
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1391
804
    def Set(self, interface_name, property_name, value):
1392
805
        """Standard D-Bus property Set() method, see D-Bus standard.
1398
811
            # The byte_arrays option is not supported yet on
1399
812
            # signatures other than "ay".
1400
813
            if prop._dbus_signature != "ay":
1401
 
                raise ValueError("Byte arrays not supported for non-"
1402
 
                                 "'ay' signature {!r}"
1403
 
                                 .format(prop._dbus_signature))
1404
 
            value = dbus.ByteArray(b''.join(chr(byte)
1405
 
                                            for byte in value))
 
814
                raise ValueError
 
815
            value = dbus.ByteArray(''.join(unichr(byte)
 
816
                                           for byte in value))
1406
817
        prop(value)
1407
 
 
1408
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1409
 
                         in_signature="s",
 
818
    
 
819
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1410
820
                         out_signature="a{sv}")
1411
821
    def GetAll(self, interface_name):
1412
822
        """Standard D-Bus property GetAll() method, see D-Bus
1413
823
        standard.
1414
 
 
 
824
        
1415
825
        Note: Will not include properties with access="write".
1416
826
        """
1417
827
        properties = {}
1418
 
        for name, prop in self._get_all_dbus_things("property"):
 
828
        for name, prop in self._get_all_dbus_properties():
1419
829
            if (interface_name
1420
830
                and interface_name != prop._dbus_interface):
1421
831
                # Interface non-empty but did not match
1427
837
            if not hasattr(value, "variant_level"):
1428
838
                properties[name] = value
1429
839
                continue
1430
 
            properties[name] = type(value)(
1431
 
                value, variant_level=value.variant_level + 1)
 
840
            properties[name] = type(value)(value, variant_level=
 
841
                                           value.variant_level+1)
1432
842
        return dbus.Dictionary(properties, signature="sv")
1433
 
 
1434
 
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1435
 
    def PropertiesChanged(self, interface_name, changed_properties,
1436
 
                          invalidated_properties):
1437
 
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
1438
 
        standard.
1439
 
        """
1440
 
        pass
1441
 
 
 
843
    
1442
844
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1443
845
                         out_signature="s",
1444
846
                         path_keyword='object_path',
1445
847
                         connection_keyword='connection')
1446
848
    def Introspect(self, object_path, connection):
1447
 
        """Overloading of standard D-Bus method.
1448
 
 
1449
 
        Inserts property tags and interface annotation tags.
 
849
        """Standard D-Bus method, overloaded to insert property tags.
1450
850
        """
1451
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1452
 
                                                         object_path,
1453
 
                                                         connection)
 
851
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
852
                                                   connection)
1454
853
        try:
1455
854
            document = xml.dom.minidom.parseString(xmlstring)
1456
 
 
1457
855
            def make_tag(document, name, prop):
1458
856
                e = document.createElement("property")
1459
857
                e.setAttribute("name", name)
1460
858
                e.setAttribute("type", prop._dbus_signature)
1461
859
                e.setAttribute("access", prop._dbus_access)
1462
860
                return e
1463
 
 
1464
861
            for if_tag in document.getElementsByTagName("interface"):
1465
 
                # Add property tags
1466
862
                for tag in (make_tag(document, name, prop)
1467
863
                            for name, prop
1468
 
                            in self._get_all_dbus_things("property")
 
864
                            in self._get_all_dbus_properties()
1469
865
                            if prop._dbus_interface
1470
866
                            == if_tag.getAttribute("name")):
1471
867
                    if_tag.appendChild(tag)
1472
 
                # Add annotation tags for properties
1473
 
                for tag in if_tag.getElementsByTagName("property"):
1474
 
                    annots = dict()
1475
 
                    for name, prop in self._get_all_dbus_things(
1476
 
                            "property"):
1477
 
                        if (name == tag.getAttribute("name")
1478
 
                            and prop._dbus_interface
1479
 
                            == if_tag.getAttribute("name")):
1480
 
                            annots.update(getattr(
1481
 
                                prop, "_dbus_annotations", {}))
1482
 
                    for name, value in annots.items():
1483
 
                        ann_tag = document.createElement(
1484
 
                            "annotation")
1485
 
                        ann_tag.setAttribute("name", name)
1486
 
                        ann_tag.setAttribute("value", value)
1487
 
                        tag.appendChild(ann_tag)
1488
868
                # Add the names to the return values for the
1489
869
                # "org.freedesktop.DBus.Properties" methods
1490
870
                if (if_tag.getAttribute("name")
1505
885
        except (AttributeError, xml.dom.DOMException,
1506
886
                xml.parsers.expat.ExpatError) as error:
1507
887
            logger.error("Failed to override Introspection method",
1508
 
                         exc_info=error)
1509
 
        return xmlstring
1510
 
 
1511
 
 
1512
 
try:
1513
 
    dbus.OBJECT_MANAGER_IFACE
1514
 
except AttributeError:
1515
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1516
 
 
1517
 
 
1518
 
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1519
 
    """A D-Bus object with an ObjectManager.
1520
 
 
1521
 
    Classes inheriting from this exposes the standard
1522
 
    GetManagedObjects call and the InterfacesAdded and
1523
 
    InterfacesRemoved signals on the standard
1524
 
    "org.freedesktop.DBus.ObjectManager" interface.
1525
 
 
1526
 
    Note: No signals are sent automatically; they must be sent
1527
 
    manually.
1528
 
    """
1529
 
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1530
 
                         out_signature="a{oa{sa{sv}}}")
1531
 
    def GetManagedObjects(self):
1532
 
        """This function must be overridden"""
1533
 
        raise NotImplementedError()
1534
 
 
1535
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1536
 
                         signature="oa{sa{sv}}")
1537
 
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1538
 
        pass
1539
 
 
1540
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1541
 
    def InterfacesRemoved(self, object_path, interfaces):
1542
 
        pass
1543
 
 
1544
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1545
 
                         out_signature="s",
1546
 
                         path_keyword='object_path',
1547
 
                         connection_keyword='connection')
1548
 
    def Introspect(self, object_path, connection):
1549
 
        """Overloading of standard D-Bus method.
1550
 
 
1551
 
        Override return argument name of GetManagedObjects to be
1552
 
        "objpath_interfaces_and_properties"
1553
 
        """
1554
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1555
 
                                                         object_path,
1556
 
                                                         connection)
1557
 
        try:
1558
 
            document = xml.dom.minidom.parseString(xmlstring)
1559
 
 
1560
 
            for if_tag in document.getElementsByTagName("interface"):
1561
 
                # Fix argument name for the GetManagedObjects method
1562
 
                if (if_tag.getAttribute("name")
1563
 
                    == dbus.OBJECT_MANAGER_IFACE):
1564
 
                    for cn in if_tag.getElementsByTagName("method"):
1565
 
                        if (cn.getAttribute("name")
1566
 
                            == "GetManagedObjects"):
1567
 
                            for arg in cn.getElementsByTagName("arg"):
1568
 
                                if (arg.getAttribute("direction")
1569
 
                                    == "out"):
1570
 
                                    arg.setAttribute(
1571
 
                                        "name",
1572
 
                                        "objpath_interfaces"
1573
 
                                        "_and_properties")
1574
 
            xmlstring = document.toxml("utf-8")
1575
 
            document.unlink()
1576
 
        except (AttributeError, xml.dom.DOMException,
1577
 
                xml.parsers.expat.ExpatError) as error:
1578
 
            logger.error("Failed to override Introspection method",
1579
 
                         exc_info=error)
1580
 
        return xmlstring
1581
 
 
1582
 
 
1583
 
def datetime_to_dbus(dt, variant_level=0):
 
888
                         error)
 
889
        return xmlstring
 
890
 
 
891
 
 
892
def datetime_to_dbus (dt, variant_level=0):
1584
893
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1585
894
    if dt is None:
1586
 
        return dbus.String("", variant_level=variant_level)
1587
 
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1588
 
 
1589
 
 
1590
 
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1591
 
    """A class decorator; applied to a subclass of
1592
 
    dbus.service.Object, it will add alternate D-Bus attributes with
1593
 
    interface names according to the "alt_interface_names" mapping.
1594
 
    Usage:
1595
 
 
1596
 
    @alternate_dbus_interfaces({"org.example.Interface":
1597
 
                                    "net.example.AlternateInterface"})
1598
 
    class SampleDBusObject(dbus.service.Object):
1599
 
        @dbus.service.method("org.example.Interface")
1600
 
        def SampleDBusMethod():
1601
 
            pass
1602
 
 
1603
 
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1604
 
    reachable via two interfaces: "org.example.Interface" and
1605
 
    "net.example.AlternateInterface", the latter of which will have
1606
 
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1607
 
    "true", unless "deprecate" is passed with a False value.
1608
 
 
1609
 
    This works for methods and signals, and also for D-Bus properties
1610
 
    (from DBusObjectWithProperties) and interfaces (from the
1611
 
    dbus_interface_annotations decorator).
 
895
        return dbus.String("", variant_level = variant_level)
 
896
    return dbus.String(dt.isoformat(),
 
897
                       variant_level=variant_level)
 
898
 
 
899
 
 
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
 
901
                                  .__metaclass__):
 
902
    """Applied to an empty subclass of a D-Bus object, this metaclass
 
903
    will add additional D-Bus attributes matching a certain pattern.
1612
904
    """
1613
 
 
1614
 
    def wrapper(cls):
1615
 
        for orig_interface_name, alt_interface_name in (
1616
 
                alt_interface_names.items()):
1617
 
            attr = {}
1618
 
            interface_names = set()
1619
 
            # Go though all attributes of the class
1620
 
            for attrname, attribute in inspect.getmembers(cls):
 
905
    def __new__(mcs, name, bases, attr):
 
906
        # Go through all the base classes which could have D-Bus
 
907
        # methods, signals, or properties in them
 
908
        for base in (b for b in bases
 
909
                     if issubclass(b, dbus.service.Object)):
 
910
            # Go though all attributes of the base class
 
911
            for attrname, attribute in inspect.getmembers(base):
1621
912
                # Ignore non-D-Bus attributes, and D-Bus attributes
1622
913
                # with the wrong interface name
1623
914
                if (not hasattr(attribute, "_dbus_interface")
1624
 
                    or not attribute._dbus_interface.startswith(
1625
 
                        orig_interface_name)):
 
915
                    or not attribute._dbus_interface
 
916
                    .startswith("se.recompile.Mandos")):
1626
917
                    continue
1627
918
                # Create an alternate D-Bus interface name based on
1628
919
                # the current name
1629
 
                alt_interface = attribute._dbus_interface.replace(
1630
 
                    orig_interface_name, alt_interface_name)
1631
 
                interface_names.add(alt_interface)
 
920
                alt_interface = (attribute._dbus_interface
 
921
                                 .replace("se.recompile.Mandos",
 
922
                                          "se.bsnet.fukt.Mandos"))
1632
923
                # Is this a D-Bus signal?
1633
924
                if getattr(attribute, "_dbus_is_signal", False):
1634
 
                    # Extract the original non-method undecorated
1635
 
                    # function by black magic
1636
 
                    if sys.version_info.major == 2:
1637
 
                        nonmethod_func = (dict(
 
925
                    # Extract the original non-method function by
 
926
                    # black magic
 
927
                    nonmethod_func = (dict(
1638
928
                            zip(attribute.func_code.co_freevars,
1639
 
                                attribute.__closure__))
1640
 
                                          ["func"].cell_contents)
1641
 
                    else:
1642
 
                        nonmethod_func = (dict(
1643
 
                            zip(attribute.__code__.co_freevars,
1644
 
                                attribute.__closure__))
1645
 
                                          ["func"].cell_contents)
 
929
                                attribute.__closure__))["func"]
 
930
                                      .cell_contents)
1646
931
                    # Create a new, but exactly alike, function
1647
932
                    # object, and decorate it to be a new D-Bus signal
1648
933
                    # with the alternate D-Bus interface name
1649
 
                    new_function = copy_function(nonmethod_func)
1650
 
                    new_function = (dbus.service.signal(
1651
 
                        alt_interface,
1652
 
                        attribute._dbus_signature)(new_function))
1653
 
                    # Copy annotations, if any
1654
 
                    try:
1655
 
                        new_function._dbus_annotations = dict(
1656
 
                            attribute._dbus_annotations)
1657
 
                    except AttributeError:
1658
 
                        pass
1659
 
 
 
934
                    new_function = (dbus.service.signal
 
935
                                    (alt_interface,
 
936
                                     attribute._dbus_signature)
 
937
                                    (types.FunctionType(
 
938
                                nonmethod_func.func_code,
 
939
                                nonmethod_func.func_globals,
 
940
                                nonmethod_func.func_name,
 
941
                                nonmethod_func.func_defaults,
 
942
                                nonmethod_func.func_closure)))
1660
943
                    # Define a creator of a function to call both the
1661
 
                    # original and alternate functions, so both the
1662
 
                    # original and alternate signals gets sent when
1663
 
                    # the function is called
 
944
                    # old and new functions, so both the old and new
 
945
                    # signals gets sent when the function is called
1664
946
                    def fixscope(func1, func2):
1665
947
                        """This function is a scope container to pass
1666
948
                        func1 and func2 to the "call_both" function
1667
949
                        outside of its arguments"""
1668
 
 
1669
 
                        @functools.wraps(func2)
1670
950
                        def call_both(*args, **kwargs):
1671
951
                            """This function will emit two D-Bus
1672
952
                            signals by calling func1 and func2"""
1673
953
                            func1(*args, **kwargs)
1674
954
                            func2(*args, **kwargs)
1675
 
                        # Make wrapper function look like a D-Bus
1676
 
                        # signal
1677
 
                        for name, attr in inspect.getmembers(func2):
1678
 
                            if name.startswith("_dbus_"):
1679
 
                                setattr(call_both, name, attr)
1680
 
 
1681
955
                        return call_both
1682
956
                    # Create the "call_both" function and add it to
1683
957
                    # the class
1684
 
                    attr[attrname] = fixscope(attribute, new_function)
 
958
                    attr[attrname] = fixscope(attribute,
 
959
                                              new_function)
1685
960
                # Is this a D-Bus method?
1686
961
                elif getattr(attribute, "_dbus_is_method", False):
1687
962
                    # Create a new, but exactly alike, function
1688
963
                    # object.  Decorate it to be a new D-Bus method
1689
964
                    # with the alternate D-Bus interface name.  Add it
1690
965
                    # to the class.
1691
 
                    attr[attrname] = (
1692
 
                        dbus.service.method(
1693
 
                            alt_interface,
1694
 
                            attribute._dbus_in_signature,
1695
 
                            attribute._dbus_out_signature)
1696
 
                        (copy_function(attribute)))
1697
 
                    # Copy annotations, if any
1698
 
                    try:
1699
 
                        attr[attrname]._dbus_annotations = dict(
1700
 
                            attribute._dbus_annotations)
1701
 
                    except AttributeError:
1702
 
                        pass
 
966
                    attr[attrname] = (dbus.service.method
 
967
                                      (alt_interface,
 
968
                                       attribute._dbus_in_signature,
 
969
                                       attribute._dbus_out_signature)
 
970
                                      (types.FunctionType
 
971
                                       (attribute.func_code,
 
972
                                        attribute.func_globals,
 
973
                                        attribute.func_name,
 
974
                                        attribute.func_defaults,
 
975
                                        attribute.func_closure)))
1703
976
                # Is this a D-Bus property?
1704
977
                elif getattr(attribute, "_dbus_is_property", False):
1705
978
                    # Create a new, but exactly alike, function
1706
979
                    # object, and decorate it to be a new D-Bus
1707
980
                    # property with the alternate D-Bus interface
1708
981
                    # name.  Add it to the class.
1709
 
                    attr[attrname] = (dbus_service_property(
1710
 
                        alt_interface, attribute._dbus_signature,
1711
 
                        attribute._dbus_access,
1712
 
                        attribute._dbus_get_args_options
1713
 
                        ["byte_arrays"])
1714
 
                                      (copy_function(attribute)))
1715
 
                    # Copy annotations, if any
1716
 
                    try:
1717
 
                        attr[attrname]._dbus_annotations = dict(
1718
 
                            attribute._dbus_annotations)
1719
 
                    except AttributeError:
1720
 
                        pass
1721
 
                # Is this a D-Bus interface?
1722
 
                elif getattr(attribute, "_dbus_is_interface", False):
1723
 
                    # Create a new, but exactly alike, function
1724
 
                    # object.  Decorate it to be a new D-Bus interface
1725
 
                    # with the alternate D-Bus interface name.  Add it
1726
 
                    # to the class.
1727
 
                    attr[attrname] = (
1728
 
                        dbus_interface_annotations(alt_interface)
1729
 
                        (copy_function(attribute)))
1730
 
            if deprecate:
1731
 
                # Deprecate all alternate interfaces
1732
 
                iname = "_AlternateDBusNames_interface_annotation{}"
1733
 
                for interface_name in interface_names:
1734
 
 
1735
 
                    @dbus_interface_annotations(interface_name)
1736
 
                    def func(self):
1737
 
                        return {"org.freedesktop.DBus.Deprecated":
1738
 
                                "true"}
1739
 
                    # Find an unused name
1740
 
                    for aname in (iname.format(i)
1741
 
                                  for i in itertools.count()):
1742
 
                        if aname not in attr:
1743
 
                            attr[aname] = func
1744
 
                            break
1745
 
            if interface_names:
1746
 
                # Replace the class with a new subclass of it with
1747
 
                # methods, signals, etc. as created above.
1748
 
                if sys.version_info.major == 2:
1749
 
                    cls = type(b"{}Alternate".format(cls.__name__),
1750
 
                               (cls, ), attr)
1751
 
                else:
1752
 
                    cls = type("{}Alternate".format(cls.__name__),
1753
 
                               (cls, ), attr)
1754
 
        return cls
1755
 
 
1756
 
    return wrapper
1757
 
 
1758
 
 
1759
 
@alternate_dbus_interfaces({"se.recompile.Mandos":
1760
 
                            "se.bsnet.fukt.Mandos"})
 
982
                    attr[attrname] = (dbus_service_property
 
983
                                      (alt_interface,
 
984
                                       attribute._dbus_signature,
 
985
                                       attribute._dbus_access,
 
986
                                       attribute
 
987
                                       ._dbus_get_args_options
 
988
                                       ["byte_arrays"])
 
989
                                      (types.FunctionType
 
990
                                       (attribute.func_code,
 
991
                                        attribute.func_globals,
 
992
                                        attribute.func_name,
 
993
                                        attribute.func_defaults,
 
994
                                        attribute.func_closure)))
 
995
        return type.__new__(mcs, name, bases, attr)
 
996
 
 
997
 
1761
998
class ClientDBus(Client, DBusObjectWithProperties):
1762
999
    """A Client class using D-Bus
1763
 
 
 
1000
    
1764
1001
    Attributes:
1765
1002
    dbus_object_path: dbus.ObjectPath
1766
1003
    bus: dbus.SystemBus()
1767
1004
    """
1768
 
 
 
1005
    
1769
1006
    runtime_expansions = (Client.runtime_expansions
1770
 
                          + ("dbus_object_path", ))
1771
 
 
1772
 
    _interface = "se.recompile.Mandos.Client"
1773
 
 
 
1007
                          + ("dbus_object_path",))
 
1008
    
1774
1009
    # dbus.service.Object doesn't use super(), so we can't either.
1775
 
 
1776
 
    def __init__(self, bus=None, *args, **kwargs):
 
1010
    
 
1011
    def __init__(self, bus = None, *args, **kwargs):
1777
1012
        self.bus = bus
1778
1013
        Client.__init__(self, *args, **kwargs)
 
1014
        
 
1015
        self._approvals_pending = 0
1779
1016
        # Only now, when this client is initialized, can it show up on
1780
1017
        # the D-Bus
1781
 
        client_object_name = str(self.name).translate(
 
1018
        client_object_name = unicode(self.name).translate(
1782
1019
            {ord("."): ord("_"),
1783
1020
             ord("-"): ord("_")})
1784
 
        self.dbus_object_path = dbus.ObjectPath(
1785
 
            "/clients/" + client_object_name)
 
1021
        self.dbus_object_path = (dbus.ObjectPath
 
1022
                                 ("/clients/" + client_object_name))
1786
1023
        DBusObjectWithProperties.__init__(self, self.bus,
1787
1024
                                          self.dbus_object_path)
1788
 
 
1789
 
    def notifychangeproperty(transform_func, dbus_name,
1790
 
                             type_func=lambda x: x,
1791
 
                             variant_level=1,
1792
 
                             invalidate_only=False,
1793
 
                             _interface=_interface):
 
1025
        
 
1026
    def notifychangeproperty(transform_func,
 
1027
                             dbus_name, type_func=lambda x: x,
 
1028
                             variant_level=1):
1794
1029
        """ Modify a variable so that it's a property which announces
1795
1030
        its changes to DBus.
1796
 
 
 
1031
        
1797
1032
        transform_fun: Function that takes a value and a variant_level
1798
1033
                       and transforms it to a D-Bus type.
1799
1034
        dbus_name: D-Bus name of the variable
1801
1036
                   to the D-Bus.  Default: no transform
1802
1037
        variant_level: D-Bus variant level.  Default: 1
1803
1038
        """
1804
 
        attrname = "_{}".format(dbus_name)
1805
 
 
 
1039
        attrname = "_{0}".format(dbus_name)
1806
1040
        def setter(self, value):
1807
1041
            if hasattr(self, "dbus_object_path"):
1808
1042
                if (not hasattr(self, attrname) or
1809
1043
                    type_func(getattr(self, attrname, None))
1810
1044
                    != type_func(value)):
1811
 
                    if invalidate_only:
1812
 
                        self.PropertiesChanged(
1813
 
                            _interface, dbus.Dictionary(),
1814
 
                            dbus.Array((dbus_name, )))
1815
 
                    else:
1816
 
                        dbus_value = transform_func(
1817
 
                            type_func(value),
1818
 
                            variant_level=variant_level)
1819
 
                        self.PropertyChanged(dbus.String(dbus_name),
1820
 
                                             dbus_value)
1821
 
                        self.PropertiesChanged(
1822
 
                            _interface,
1823
 
                            dbus.Dictionary({dbus.String(dbus_name):
1824
 
                                             dbus_value}),
1825
 
                            dbus.Array())
 
1045
                    dbus_value = transform_func(type_func(value),
 
1046
                                                variant_level
 
1047
                                                =variant_level)
 
1048
                    self.PropertyChanged(dbus.String(dbus_name),
 
1049
                                         dbus_value)
1826
1050
            setattr(self, attrname, value)
1827
 
 
 
1051
        
1828
1052
        return property(lambda self: getattr(self, attrname), setter)
1829
 
 
 
1053
    
 
1054
    
1830
1055
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1831
1056
    approvals_pending = notifychangeproperty(dbus.Boolean,
1832
1057
                                             "ApprovalPending",
1833
 
                                             type_func=bool)
 
1058
                                             type_func = bool)
1834
1059
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1835
1060
    last_enabled = notifychangeproperty(datetime_to_dbus,
1836
1061
                                        "LastEnabled")
1837
 
    checker = notifychangeproperty(
1838
 
        dbus.Boolean, "CheckerRunning",
1839
 
        type_func=lambda checker: checker is not None)
 
1062
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
 
1063
                                   type_func = lambda checker:
 
1064
                                       checker is not None)
1840
1065
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1841
1066
                                           "LastCheckedOK")
1842
 
    last_checker_status = notifychangeproperty(dbus.Int16,
1843
 
                                               "LastCheckerStatus")
1844
1067
    last_approval_request = notifychangeproperty(
1845
1068
        datetime_to_dbus, "LastApprovalRequest")
1846
1069
    approved_by_default = notifychangeproperty(dbus.Boolean,
1847
1070
                                               "ApprovedByDefault")
1848
 
    approval_delay = notifychangeproperty(
1849
 
        dbus.UInt64, "ApprovalDelay",
1850
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1071
    approval_delay = notifychangeproperty(dbus.UInt16,
 
1072
                                          "ApprovalDelay",
 
1073
                                          type_func =
 
1074
                                          _timedelta_to_milliseconds)
1851
1075
    approval_duration = notifychangeproperty(
1852
 
        dbus.UInt64, "ApprovalDuration",
1853
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1076
        dbus.UInt16, "ApprovalDuration",
 
1077
        type_func = _timedelta_to_milliseconds)
1854
1078
    host = notifychangeproperty(dbus.String, "Host")
1855
 
    timeout = notifychangeproperty(
1856
 
        dbus.UInt64, "Timeout",
1857
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1079
    timeout = notifychangeproperty(dbus.UInt16, "Timeout",
 
1080
                                   type_func =
 
1081
                                   _timedelta_to_milliseconds)
1858
1082
    extended_timeout = notifychangeproperty(
1859
 
        dbus.UInt64, "ExtendedTimeout",
1860
 
        type_func=lambda td: td.total_seconds() * 1000)
1861
 
    interval = notifychangeproperty(
1862
 
        dbus.UInt64, "Interval",
1863
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1083
        dbus.UInt16, "ExtendedTimeout",
 
1084
        type_func = _timedelta_to_milliseconds)
 
1085
    interval = notifychangeproperty(dbus.UInt16,
 
1086
                                    "Interval",
 
1087
                                    type_func =
 
1088
                                    _timedelta_to_milliseconds)
1864
1089
    checker_command = notifychangeproperty(dbus.String, "Checker")
1865
 
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1866
 
                                  invalidate_only=True)
1867
 
 
 
1090
    
1868
1091
    del notifychangeproperty
1869
 
 
 
1092
    
1870
1093
    def __del__(self, *args, **kwargs):
1871
1094
        try:
1872
1095
            self.remove_from_connection()
1875
1098
        if hasattr(DBusObjectWithProperties, "__del__"):
1876
1099
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1877
1100
        Client.__del__(self, *args, **kwargs)
1878
 
 
1879
 
    def checker_callback(self, source, condition,
1880
 
                         connection, command, *args, **kwargs):
1881
 
        ret = Client.checker_callback(self, source, condition,
1882
 
                                      connection, command, *args,
1883
 
                                      **kwargs)
1884
 
        exitstatus = self.last_checker_status
1885
 
        if exitstatus >= 0:
 
1101
    
 
1102
    def checker_callback(self, pid, condition, command,
 
1103
                         *args, **kwargs):
 
1104
        self.checker_callback_tag = None
 
1105
        self.checker = None
 
1106
        if os.WIFEXITED(condition):
 
1107
            exitstatus = os.WEXITSTATUS(condition)
1886
1108
            # Emit D-Bus signal
1887
1109
            self.CheckerCompleted(dbus.Int16(exitstatus),
1888
 
                                  # This is specific to GNU libC
1889
 
                                  dbus.Int64(exitstatus << 8),
 
1110
                                  dbus.Int64(condition),
1890
1111
                                  dbus.String(command))
1891
1112
        else:
1892
1113
            # Emit D-Bus signal
1893
1114
            self.CheckerCompleted(dbus.Int16(-1),
1894
 
                                  dbus.Int64(
1895
 
                                      # This is specific to GNU libC
1896
 
                                      (exitstatus << 8)
1897
 
                                      | self.last_checker_signal),
 
1115
                                  dbus.Int64(condition),
1898
1116
                                  dbus.String(command))
1899
 
        return ret
1900
 
 
 
1117
        
 
1118
        return Client.checker_callback(self, pid, condition, command,
 
1119
                                       *args, **kwargs)
 
1120
    
1901
1121
    def start_checker(self, *args, **kwargs):
1902
 
        old_checker_pid = getattr(self.checker, "pid", None)
 
1122
        old_checker = self.checker
 
1123
        if self.checker is not None:
 
1124
            old_checker_pid = self.checker.pid
 
1125
        else:
 
1126
            old_checker_pid = None
1903
1127
        r = Client.start_checker(self, *args, **kwargs)
1904
1128
        # Only if new checker process was started
1905
1129
        if (self.checker is not None
1907
1131
            # Emit D-Bus signal
1908
1132
            self.CheckerStarted(self.current_checker_command)
1909
1133
        return r
1910
 
 
 
1134
    
1911
1135
    def _reset_approved(self):
1912
 
        self.approved = None
 
1136
        self._approved = None
1913
1137
        return False
1914
 
 
 
1138
    
1915
1139
    def approve(self, value=True):
1916
 
        self.approved = value
1917
 
        GLib.timeout_add(int(self.approval_duration.total_seconds()
1918
 
                             * 1000), self._reset_approved)
1919
1140
        self.send_changedstate()
1920
 
 
1921
 
    #  D-Bus methods, signals & properties
1922
 
 
1923
 
    #  Interfaces
1924
 
 
1925
 
    #  Signals
1926
 
 
 
1141
        self._approved = value
 
1142
        gobject.timeout_add(_timedelta_to_milliseconds
 
1143
                            (self.approval_duration),
 
1144
                            self._reset_approved)
 
1145
    
 
1146
    
 
1147
    ## D-Bus methods, signals & properties
 
1148
    _interface = "se.recompile.Mandos.Client"
 
1149
    
 
1150
    ## Signals
 
1151
    
1927
1152
    # CheckerCompleted - signal
1928
1153
    @dbus.service.signal(_interface, signature="nxs")
1929
1154
    def CheckerCompleted(self, exitcode, waitstatus, command):
1930
1155
        "D-Bus signal"
1931
1156
        pass
1932
 
 
 
1157
    
1933
1158
    # CheckerStarted - signal
1934
1159
    @dbus.service.signal(_interface, signature="s")
1935
1160
    def CheckerStarted(self, command):
1936
1161
        "D-Bus signal"
1937
1162
        pass
1938
 
 
 
1163
    
1939
1164
    # PropertyChanged - signal
1940
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1165
    @dbus.service.signal(_interface, signature="sv")
1942
1166
    def PropertyChanged(self, property, value):
1943
1167
        "D-Bus signal"
1944
1168
        pass
1945
 
 
 
1169
    
1946
1170
    # GotSecret - signal
1947
1171
    @dbus.service.signal(_interface)
1948
1172
    def GotSecret(self):
1951
1175
        server to mandos-client
1952
1176
        """
1953
1177
        pass
1954
 
 
 
1178
    
1955
1179
    # Rejected - signal
1956
1180
    @dbus.service.signal(_interface, signature="s")
1957
1181
    def Rejected(self, reason):
1958
1182
        "D-Bus signal"
1959
1183
        pass
1960
 
 
 
1184
    
1961
1185
    # NeedApproval - signal
1962
1186
    @dbus.service.signal(_interface, signature="tb")
1963
1187
    def NeedApproval(self, timeout, default):
1964
1188
        "D-Bus signal"
1965
1189
        return self.need_approval()
1966
 
 
1967
 
    #  Methods
1968
 
 
 
1190
    
 
1191
    # NeRwequest - signal
 
1192
    @dbus.service.signal(_interface, signature="s")
 
1193
    def NewRequest(self, ip):
 
1194
        """D-Bus signal
 
1195
        Is sent after a client request a password.
 
1196
        """
 
1197
        pass
 
1198
    
 
1199
    ## Methods
 
1200
    
1969
1201
    # Approve - method
1970
1202
    @dbus.service.method(_interface, in_signature="b")
1971
1203
    def Approve(self, value):
1972
1204
        self.approve(value)
1973
 
 
 
1205
    
1974
1206
    # CheckedOK - method
1975
1207
    @dbus.service.method(_interface)
1976
1208
    def CheckedOK(self):
1977
1209
        self.checked_ok()
1978
 
 
 
1210
    
1979
1211
    # Enable - method
1980
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1981
1212
    @dbus.service.method(_interface)
1982
1213
    def Enable(self):
1983
1214
        "D-Bus method"
1984
1215
        self.enable()
1985
 
 
 
1216
    
1986
1217
    # StartChecker - method
1987
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1988
1218
    @dbus.service.method(_interface)
1989
1219
    def StartChecker(self):
1990
1220
        "D-Bus method"
1991
1221
        self.start_checker()
1992
 
 
 
1222
    
1993
1223
    # Disable - method
1994
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1995
1224
    @dbus.service.method(_interface)
1996
1225
    def Disable(self):
1997
1226
        "D-Bus method"
1998
1227
        self.disable()
1999
 
 
 
1228
    
2000
1229
    # StopChecker - method
2001
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2002
1230
    @dbus.service.method(_interface)
2003
1231
    def StopChecker(self):
2004
1232
        self.stop_checker()
2005
 
 
2006
 
    #  Properties
2007
 
 
 
1233
    
 
1234
    ## Properties
 
1235
    
2008
1236
    # ApprovalPending - property
2009
1237
    @dbus_service_property(_interface, signature="b", access="read")
2010
1238
    def ApprovalPending_dbus_property(self):
2011
1239
        return dbus.Boolean(bool(self.approvals_pending))
2012
 
 
 
1240
    
2013
1241
    # ApprovedByDefault - property
2014
 
    @dbus_service_property(_interface,
2015
 
                           signature="b",
 
1242
    @dbus_service_property(_interface, signature="b",
2016
1243
                           access="readwrite")
2017
1244
    def ApprovedByDefault_dbus_property(self, value=None):
2018
1245
        if value is None:       # get
2019
1246
            return dbus.Boolean(self.approved_by_default)
2020
1247
        self.approved_by_default = bool(value)
2021
 
 
 
1248
    
2022
1249
    # ApprovalDelay - property
2023
 
    @dbus_service_property(_interface,
2024
 
                           signature="t",
 
1250
    @dbus_service_property(_interface, signature="t",
2025
1251
                           access="readwrite")
2026
1252
    def ApprovalDelay_dbus_property(self, value=None):
2027
1253
        if value is None:       # get
2028
 
            return dbus.UInt64(self.approval_delay.total_seconds()
2029
 
                               * 1000)
 
1254
            return dbus.UInt64(self.approval_delay_milliseconds())
2030
1255
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
2031
 
 
 
1256
    
2032
1257
    # ApprovalDuration - property
2033
 
    @dbus_service_property(_interface,
2034
 
                           signature="t",
 
1258
    @dbus_service_property(_interface, signature="t",
2035
1259
                           access="readwrite")
2036
1260
    def ApprovalDuration_dbus_property(self, value=None):
2037
1261
        if value is None:       # get
2038
 
            return dbus.UInt64(self.approval_duration.total_seconds()
2039
 
                               * 1000)
 
1262
            return dbus.UInt64(_timedelta_to_milliseconds(
 
1263
                    self.approval_duration))
2040
1264
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
2041
 
 
 
1265
    
2042
1266
    # Name - property
2043
 
    @dbus_annotations(
2044
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2045
1267
    @dbus_service_property(_interface, signature="s", access="read")
2046
1268
    def Name_dbus_property(self):
2047
1269
        return dbus.String(self.name)
2048
 
 
2049
 
    # KeyID - property
2050
 
    @dbus_annotations(
2051
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2052
 
    @dbus_service_property(_interface, signature="s", access="read")
2053
 
    def KeyID_dbus_property(self):
2054
 
        return dbus.String(self.key_id)
2055
 
 
 
1270
    
2056
1271
    # Fingerprint - property
2057
 
    @dbus_annotations(
2058
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2059
1272
    @dbus_service_property(_interface, signature="s", access="read")
2060
1273
    def Fingerprint_dbus_property(self):
2061
1274
        return dbus.String(self.fingerprint)
2062
 
 
 
1275
    
2063
1276
    # Host - property
2064
 
    @dbus_service_property(_interface,
2065
 
                           signature="s",
 
1277
    @dbus_service_property(_interface, signature="s",
2066
1278
                           access="readwrite")
2067
1279
    def Host_dbus_property(self, value=None):
2068
1280
        if value is None:       # get
2069
1281
            return dbus.String(self.host)
2070
 
        self.host = str(value)
2071
 
 
 
1282
        self.host = value
 
1283
    
2072
1284
    # Created - property
2073
 
    @dbus_annotations(
2074
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2075
1285
    @dbus_service_property(_interface, signature="s", access="read")
2076
1286
    def Created_dbus_property(self):
2077
1287
        return datetime_to_dbus(self.created)
2078
 
 
 
1288
    
2079
1289
    # LastEnabled - property
2080
1290
    @dbus_service_property(_interface, signature="s", access="read")
2081
1291
    def LastEnabled_dbus_property(self):
2082
1292
        return datetime_to_dbus(self.last_enabled)
2083
 
 
 
1293
    
2084
1294
    # Enabled - property
2085
 
    @dbus_service_property(_interface,
2086
 
                           signature="b",
 
1295
    @dbus_service_property(_interface, signature="b",
2087
1296
                           access="readwrite")
2088
1297
    def Enabled_dbus_property(self, value=None):
2089
1298
        if value is None:       # get
2092
1301
            self.enable()
2093
1302
        else:
2094
1303
            self.disable()
2095
 
 
 
1304
    
2096
1305
    # LastCheckedOK - property
2097
 
    @dbus_service_property(_interface,
2098
 
                           signature="s",
 
1306
    @dbus_service_property(_interface, signature="s",
2099
1307
                           access="readwrite")
2100
1308
    def LastCheckedOK_dbus_property(self, value=None):
2101
1309
        if value is not None:
2102
1310
            self.checked_ok()
2103
1311
            return
2104
1312
        return datetime_to_dbus(self.last_checked_ok)
2105
 
 
2106
 
    # LastCheckerStatus - property
2107
 
    @dbus_service_property(_interface, signature="n", access="read")
2108
 
    def LastCheckerStatus_dbus_property(self):
2109
 
        return dbus.Int16(self.last_checker_status)
2110
 
 
 
1313
    
2111
1314
    # Expires - property
2112
1315
    @dbus_service_property(_interface, signature="s", access="read")
2113
1316
    def Expires_dbus_property(self):
2114
1317
        return datetime_to_dbus(self.expires)
2115
 
 
 
1318
    
2116
1319
    # LastApprovalRequest - property
2117
1320
    @dbus_service_property(_interface, signature="s", access="read")
2118
1321
    def LastApprovalRequest_dbus_property(self):
2119
1322
        return datetime_to_dbus(self.last_approval_request)
2120
 
 
 
1323
    
2121
1324
    # Timeout - property
2122
 
    @dbus_service_property(_interface,
2123
 
                           signature="t",
 
1325
    @dbus_service_property(_interface, signature="t",
2124
1326
                           access="readwrite")
2125
1327
    def Timeout_dbus_property(self, value=None):
2126
1328
        if value is None:       # get
2127
 
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
2128
 
        old_timeout = self.timeout
 
1329
            return dbus.UInt64(self.timeout_milliseconds())
2129
1330
        self.timeout = datetime.timedelta(0, 0, 0, value)
2130
 
        # Reschedule disabling
2131
 
        if self.enabled:
2132
 
            now = datetime.datetime.utcnow()
2133
 
            self.expires += self.timeout - old_timeout
2134
 
            if self.expires <= now:
2135
 
                # The timeout has passed
2136
 
                self.disable()
2137
 
            else:
2138
 
                if (getattr(self, "disable_initiator_tag", None)
2139
 
                    is None):
2140
 
                    return
2141
 
                GLib.source_remove(self.disable_initiator_tag)
2142
 
                self.disable_initiator_tag = GLib.timeout_add(
2143
 
                    int((self.expires - now).total_seconds() * 1000),
2144
 
                    self.disable)
2145
 
 
 
1331
        if getattr(self, "disable_initiator_tag", None) is None:
 
1332
            return
 
1333
        # Reschedule timeout
 
1334
        gobject.source_remove(self.disable_initiator_tag)
 
1335
        self.disable_initiator_tag = None
 
1336
        self.expires = None
 
1337
        time_to_die = _timedelta_to_milliseconds((self
 
1338
                                                  .last_checked_ok
 
1339
                                                  + self.timeout)
 
1340
                                                 - datetime.datetime
 
1341
                                                 .utcnow())
 
1342
        if time_to_die <= 0:
 
1343
            # The timeout has passed
 
1344
            self.disable()
 
1345
        else:
 
1346
            self.expires = (datetime.datetime.utcnow()
 
1347
                            + datetime.timedelta(milliseconds =
 
1348
                                                 time_to_die))
 
1349
            self.disable_initiator_tag = (gobject.timeout_add
 
1350
                                          (time_to_die, self.disable))
 
1351
    
2146
1352
    # ExtendedTimeout - property
2147
 
    @dbus_service_property(_interface,
2148
 
                           signature="t",
 
1353
    @dbus_service_property(_interface, signature="t",
2149
1354
                           access="readwrite")
2150
1355
    def ExtendedTimeout_dbus_property(self, value=None):
2151
1356
        if value is None:       # get
2152
 
            return dbus.UInt64(self.extended_timeout.total_seconds()
2153
 
                               * 1000)
 
1357
            return dbus.UInt64(self.extended_timeout_milliseconds())
2154
1358
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2155
 
 
 
1359
    
2156
1360
    # Interval - property
2157
 
    @dbus_service_property(_interface,
2158
 
                           signature="t",
 
1361
    @dbus_service_property(_interface, signature="t",
2159
1362
                           access="readwrite")
2160
1363
    def Interval_dbus_property(self, value=None):
2161
1364
        if value is None:       # get
2162
 
            return dbus.UInt64(self.interval.total_seconds() * 1000)
 
1365
            return dbus.UInt64(self.interval_milliseconds())
2163
1366
        self.interval = datetime.timedelta(0, 0, 0, value)
2164
1367
        if getattr(self, "checker_initiator_tag", None) is None:
2165
1368
            return
2166
1369
        if self.enabled:
2167
1370
            # Reschedule checker run
2168
 
            GLib.source_remove(self.checker_initiator_tag)
2169
 
            self.checker_initiator_tag = GLib.timeout_add(
2170
 
                value, self.start_checker)
2171
 
            self.start_checker()  # Start one now, too
2172
 
 
 
1371
            gobject.source_remove(self.checker_initiator_tag)
 
1372
            self.checker_initiator_tag = (gobject.timeout_add
 
1373
                                          (value, self.start_checker))
 
1374
            self.start_checker()    # Start one now, too
 
1375
    
2173
1376
    # Checker - property
2174
 
    @dbus_service_property(_interface,
2175
 
                           signature="s",
 
1377
    @dbus_service_property(_interface, signature="s",
2176
1378
                           access="readwrite")
2177
1379
    def Checker_dbus_property(self, value=None):
2178
1380
        if value is None:       # get
2179
1381
            return dbus.String(self.checker_command)
2180
 
        self.checker_command = str(value)
2181
 
 
 
1382
        self.checker_command = value
 
1383
    
2182
1384
    # CheckerRunning - property
2183
 
    @dbus_service_property(_interface,
2184
 
                           signature="b",
 
1385
    @dbus_service_property(_interface, signature="b",
2185
1386
                           access="readwrite")
2186
1387
    def CheckerRunning_dbus_property(self, value=None):
2187
1388
        if value is None:       # get
2190
1391
            self.start_checker()
2191
1392
        else:
2192
1393
            self.stop_checker()
2193
 
 
 
1394
    
2194
1395
    # ObjectPath - property
2195
 
    @dbus_annotations(
2196
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
 
         "org.freedesktop.DBus.Deprecated": "true"})
2198
1396
    @dbus_service_property(_interface, signature="o", access="read")
2199
1397
    def ObjectPath_dbus_property(self):
2200
 
        return self.dbus_object_path  # is already a dbus.ObjectPath
2201
 
 
 
1398
        return self.dbus_object_path # is already a dbus.ObjectPath
 
1399
    
2202
1400
    # Secret = property
2203
 
    @dbus_annotations(
2204
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
2205
 
         "invalidates"})
2206
 
    @dbus_service_property(_interface,
2207
 
                           signature="ay",
2208
 
                           access="write",
2209
 
                           byte_arrays=True)
 
1401
    @dbus_service_property(_interface, signature="ay",
 
1402
                           access="write", byte_arrays=True)
2210
1403
    def Secret_dbus_property(self, value):
2211
 
        self.secret = bytes(value)
2212
 
 
 
1404
        self.secret = str(value)
 
1405
    
2213
1406
    del _interface
2214
1407
 
2215
1408
 
2216
1409
class ProxyClient(object):
2217
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
1410
    def __init__(self, child_pipe, fpr, address):
2218
1411
        self._pipe = child_pipe
2219
 
        self._pipe.send(('init', key_id, fpr, address))
 
1412
        self._pipe.send(('init', fpr, address))
2220
1413
        if not self._pipe.recv():
2221
 
            raise KeyError(key_id or fpr)
2222
 
 
 
1414
            raise KeyError()
 
1415
    
2223
1416
    def __getattribute__(self, name):
2224
 
        if name == '_pipe':
 
1417
        if(name == '_pipe'):
2225
1418
            return super(ProxyClient, self).__getattribute__(name)
2226
1419
        self._pipe.send(('getattr', name))
2227
1420
        data = self._pipe.recv()
2228
1421
        if data[0] == 'data':
2229
1422
            return data[1]
2230
1423
        if data[0] == 'function':
2231
 
 
2232
1424
            def func(*args, **kwargs):
2233
1425
                self._pipe.send(('funcall', name, args, kwargs))
2234
1426
                return self._pipe.recv()[1]
2235
 
 
2236
1427
            return func
2237
 
 
 
1428
    
2238
1429
    def __setattr__(self, name, value):
2239
 
        if name == '_pipe':
 
1430
        if(name == '_pipe'):
2240
1431
            return super(ProxyClient, self).__setattr__(name, value)
2241
1432
        self._pipe.send(('setattr', name, value))
2242
1433
 
2243
1434
 
 
1435
class ClientDBusTransitional(ClientDBus):
 
1436
    __metaclass__ = AlternateDBusNamesMetaclass
 
1437
 
 
1438
 
2244
1439
class ClientHandler(socketserver.BaseRequestHandler, object):
2245
1440
    """A class to handle client connections.
2246
 
 
 
1441
    
2247
1442
    Instantiated once for each connection to handle it.
2248
1443
    Note: This will run in its own forked process."""
2249
 
 
 
1444
    
2250
1445
    def handle(self):
2251
1446
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2252
1447
            logger.info("TCP connection from: %s",
2253
 
                        str(self.client_address))
 
1448
                        unicode(self.client_address))
2254
1449
            logger.debug("Pipe FD: %d",
2255
1450
                         self.server.child_pipe.fileno())
2256
 
 
2257
 
            session = gnutls.ClientSession(self.request)
2258
 
 
2259
 
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
2260
 
            #                       "+AES-256-CBC", "+SHA1",
2261
 
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
2262
 
            #                       "+DHE-DSS"))
 
1451
            
 
1452
            session = (gnutls.connection
 
1453
                       .ClientSession(self.request,
 
1454
                                      gnutls.connection
 
1455
                                      .X509Credentials()))
 
1456
            
 
1457
            # Note: gnutls.connection.X509Credentials is really a
 
1458
            # generic GnuTLS certificate credentials object so long as
 
1459
            # no X.509 keys are added to it.  Therefore, we can use it
 
1460
            # here despite using OpenPGP certificates.
 
1461
            
 
1462
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
1463
            #                      "+AES-256-CBC", "+SHA1",
 
1464
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
1465
            #                      "+DHE-DSS"))
2263
1466
            # Use a fallback default, since this MUST be set.
2264
1467
            priority = self.server.gnutls_priority
2265
1468
            if priority is None:
2266
1469
                priority = "NORMAL"
2267
 
            gnutls.priority_set_direct(session._c_object,
2268
 
                                       priority.encode("utf-8"),
2269
 
                                       None)
2270
 
 
 
1470
            (gnutls.library.functions
 
1471
             .gnutls_priority_set_direct(session._c_object,
 
1472
                                         priority, None))
 
1473
            
2271
1474
            # Start communication using the Mandos protocol
2272
1475
            # Get protocol number
2273
1476
            line = self.request.makefile().readline()
2274
1477
            logger.debug("Protocol version: %r", line)
2275
1478
            try:
2276
1479
                if int(line.strip().split()[0]) > 1:
2277
 
                    raise RuntimeError(line)
 
1480
                    raise RuntimeError
2278
1481
            except (ValueError, IndexError, RuntimeError) as error:
2279
1482
                logger.error("Unknown protocol version: %s", error)
2280
1483
                return
2281
 
 
 
1484
            
2282
1485
            # Start GnuTLS connection
2283
1486
            try:
2284
1487
                session.handshake()
2285
 
            except gnutls.Error as error:
 
1488
            except gnutls.errors.GNUTLSError as error:
2286
1489
                logger.warning("Handshake failed: %s", error)
2287
1490
                # Do not run session.bye() here: the session is not
2288
1491
                # established.  Just abandon the request.
2289
1492
                return
2290
1493
            logger.debug("Handshake succeeded")
2291
 
 
 
1494
            
2292
1495
            approval_required = False
2293
1496
            try:
2294
 
                if gnutls.has_rawpk:
2295
 
                    fpr = b""
2296
 
                    try:
2297
 
                        key_id = self.key_id(
2298
 
                            self.peer_certificate(session))
2299
 
                    except (TypeError, gnutls.Error) as error:
2300
 
                        logger.warning("Bad certificate: %s", error)
2301
 
                        return
2302
 
                    logger.debug("Key ID: %s", key_id)
2303
 
 
2304
 
                else:
2305
 
                    key_id = b""
2306
 
                    try:
2307
 
                        fpr = self.fingerprint(
2308
 
                            self.peer_certificate(session))
2309
 
                    except (TypeError, gnutls.Error) as error:
2310
 
                        logger.warning("Bad certificate: %s", error)
2311
 
                        return
2312
 
                    logger.debug("Fingerprint: %s", fpr)
2313
 
 
2314
 
                try:
2315
 
                    client = ProxyClient(child_pipe, key_id, fpr,
 
1497
                try:
 
1498
                    fpr = self.fingerprint(self.peer_certificate
 
1499
                                           (session))
 
1500
                except (TypeError,
 
1501
                        gnutls.errors.GNUTLSError) as error:
 
1502
                    logger.warning("Bad certificate: %s", error)
 
1503
                    return
 
1504
                logger.debug("Fingerprint: %s", fpr)
 
1505
                if self.server.use_dbus:
 
1506
                    # Emit D-Bus signal
 
1507
                    client.NewRequest(str(self.client_address))
 
1508
                
 
1509
                try:
 
1510
                    client = ProxyClient(child_pipe, fpr,
2316
1511
                                         self.client_address)
2317
1512
                except KeyError:
2318
1513
                    return
2319
 
 
 
1514
                
2320
1515
                if client.approval_delay:
2321
1516
                    delay = client.approval_delay
2322
1517
                    client.approvals_pending += 1
2323
1518
                    approval_required = True
2324
 
 
 
1519
                
2325
1520
                while True:
2326
1521
                    if not client.enabled:
2327
1522
                        logger.info("Client %s is disabled",
2328
 
                                    client.name)
 
1523
                                       client.name)
2329
1524
                        if self.server.use_dbus:
2330
1525
                            # Emit D-Bus signal
2331
1526
                            client.Rejected("Disabled")
2332
1527
                        return
2333
 
 
2334
 
                    if client.approved or not client.approval_delay:
2335
 
                        # We are approved or approval is disabled
 
1528
                    
 
1529
                    if client._approved or not client.approval_delay:
 
1530
                        #We are approved or approval is disabled
2336
1531
                        break
2337
 
                    elif client.approved is None:
 
1532
                    elif client._approved is None:
2338
1533
                        logger.info("Client %s needs approval",
2339
1534
                                    client.name)
2340
1535
                        if self.server.use_dbus:
2341
1536
                            # Emit D-Bus signal
2342
1537
                            client.NeedApproval(
2343
 
                                client.approval_delay.total_seconds()
2344
 
                                * 1000, client.approved_by_default)
 
1538
                                client.approval_delay_milliseconds(),
 
1539
                                client.approved_by_default)
2345
1540
                    else:
2346
1541
                        logger.warning("Client %s was not approved",
2347
1542
                                       client.name)
2349
1544
                            # Emit D-Bus signal
2350
1545
                            client.Rejected("Denied")
2351
1546
                        return
2352
 
 
2353
 
                    # wait until timeout or approved
 
1547
                    
 
1548
                    #wait until timeout or approved
2354
1549
                    time = datetime.datetime.now()
2355
1550
                    client.changedstate.acquire()
2356
 
                    client.changedstate.wait(delay.total_seconds())
 
1551
                    (client.changedstate.wait
 
1552
                     (float(client._timedelta_to_milliseconds(delay)
 
1553
                            / 1000)))
2357
1554
                    client.changedstate.release()
2358
1555
                    time2 = datetime.datetime.now()
2359
1556
                    if (time2 - time) >= delay:
2369
1566
                            break
2370
1567
                    else:
2371
1568
                        delay -= time2 - time
2372
 
 
2373
 
                try:
2374
 
                    session.send(client.secret)
2375
 
                except gnutls.Error as error:
2376
 
                    logger.warning("gnutls send failed",
2377
 
                                   exc_info=error)
2378
 
                    return
2379
 
 
 
1569
                
 
1570
                sent_size = 0
 
1571
                while sent_size < len(client.secret):
 
1572
                    try:
 
1573
                        sent = session.send(client.secret[sent_size:])
 
1574
                    except gnutls.errors.GNUTLSError as error:
 
1575
                        logger.warning("gnutls send failed")
 
1576
                        return
 
1577
                    logger.debug("Sent: %d, remaining: %d",
 
1578
                                 sent, len(client.secret)
 
1579
                                 - (sent_size + sent))
 
1580
                    sent_size += sent
 
1581
                
2380
1582
                logger.info("Sending secret to %s", client.name)
2381
1583
                # bump the timeout using extended_timeout
2382
 
                client.bump_timeout(client.extended_timeout)
 
1584
                client.checked_ok(client.extended_timeout)
2383
1585
                if self.server.use_dbus:
2384
1586
                    # Emit D-Bus signal
2385
1587
                    client.GotSecret()
2386
 
 
 
1588
            
2387
1589
            finally:
2388
1590
                if approval_required:
2389
1591
                    client.approvals_pending -= 1
2390
1592
                try:
2391
1593
                    session.bye()
2392
 
                except gnutls.Error as error:
2393
 
                    logger.warning("GnuTLS bye failed",
2394
 
                                   exc_info=error)
2395
 
 
 
1594
                except gnutls.errors.GNUTLSError as error:
 
1595
                    logger.warning("GnuTLS bye failed")
 
1596
    
2396
1597
    @staticmethod
2397
1598
    def peer_certificate(session):
2398
 
        "Return the peer's certificate as a bytestring"
2399
 
        try:
2400
 
            cert_type = gnutls.certificate_type_get2(session._c_object,
2401
 
                                                     gnutls.CTYPE_PEERS)
2402
 
        except AttributeError:
2403
 
            cert_type = gnutls.certificate_type_get(session._c_object)
2404
 
        if gnutls.has_rawpk:
2405
 
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2406
 
        else:
2407
 
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2408
 
        # If not a valid certificate type...
2409
 
        if cert_type not in valid_cert_types:
2410
 
            logger.info("Cert type %r not in %r", cert_type,
2411
 
                        valid_cert_types)
2412
 
            # ...return invalid data
2413
 
            return b""
 
1599
        "Return the peer's OpenPGP certificate as a bytestring"
 
1600
        # If not an OpenPGP certificate...
 
1601
        if (gnutls.library.functions
 
1602
            .gnutls_certificate_type_get(session._c_object)
 
1603
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
1604
            # ...do the normal thing
 
1605
            return session.peer_certificate
2414
1606
        list_size = ctypes.c_uint(1)
2415
 
        cert_list = (gnutls.certificate_get_peers
 
1607
        cert_list = (gnutls.library.functions
 
1608
                     .gnutls_certificate_get_peers
2416
1609
                     (session._c_object, ctypes.byref(list_size)))
2417
1610
        if not bool(cert_list) and list_size.value != 0:
2418
 
            raise gnutls.Error("error getting peer certificate")
 
1611
            raise gnutls.errors.GNUTLSError("error getting peer"
 
1612
                                            " certificate")
2419
1613
        if list_size.value == 0:
2420
1614
            return None
2421
1615
        cert = cert_list[0]
2422
1616
        return ctypes.string_at(cert.data, cert.size)
2423
 
 
2424
 
    @staticmethod
2425
 
    def key_id(certificate):
2426
 
        "Convert a certificate bytestring to a hexdigit key ID"
2427
 
        # New GnuTLS "datum" with the public key
2428
 
        datum = gnutls.datum_t(
2429
 
            ctypes.cast(ctypes.c_char_p(certificate),
2430
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2431
 
            ctypes.c_uint(len(certificate)))
2432
 
        # XXX all these need to be created in the gnutls "module"
2433
 
        # New empty GnuTLS certificate
2434
 
        pubkey = gnutls.pubkey_t()
2435
 
        gnutls.pubkey_init(ctypes.byref(pubkey))
2436
 
        # Import the raw public key into the certificate
2437
 
        gnutls.pubkey_import(pubkey,
2438
 
                             ctypes.byref(datum),
2439
 
                             gnutls.X509_FMT_DER)
2440
 
        # New buffer for the key ID
2441
 
        buf = ctypes.create_string_buffer(32)
2442
 
        buf_len = ctypes.c_size_t(len(buf))
2443
 
        # Get the key ID from the raw public key into the buffer
2444
 
        gnutls.pubkey_get_key_id(pubkey,
2445
 
                                 gnutls.KEYID_USE_SHA256,
2446
 
                                 ctypes.cast(ctypes.byref(buf),
2447
 
                                             ctypes.POINTER(ctypes.c_ubyte)),
2448
 
                                 ctypes.byref(buf_len))
2449
 
        # Deinit the certificate
2450
 
        gnutls.pubkey_deinit(pubkey)
2451
 
 
2452
 
        # Convert the buffer to a Python bytestring
2453
 
        key_id = ctypes.string_at(buf, buf_len.value)
2454
 
        # Convert the bytestring to hexadecimal notation
2455
 
        hex_key_id = binascii.hexlify(key_id).upper()
2456
 
        return hex_key_id
2457
 
 
 
1617
    
2458
1618
    @staticmethod
2459
1619
    def fingerprint(openpgp):
2460
1620
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2461
1621
        # New GnuTLS "datum" with the OpenPGP public key
2462
 
        datum = gnutls.datum_t(
2463
 
            ctypes.cast(ctypes.c_char_p(openpgp),
2464
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2465
 
            ctypes.c_uint(len(openpgp)))
 
1622
        datum = (gnutls.library.types
 
1623
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
 
1624
                                             ctypes.POINTER
 
1625
                                             (ctypes.c_ubyte)),
 
1626
                                 ctypes.c_uint(len(openpgp))))
2466
1627
        # New empty GnuTLS certificate
2467
 
        crt = gnutls.openpgp_crt_t()
2468
 
        gnutls.openpgp_crt_init(ctypes.byref(crt))
 
1628
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
 
1629
        (gnutls.library.functions
 
1630
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
2469
1631
        # Import the OpenPGP public key into the certificate
2470
 
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
 
                                  gnutls.OPENPGP_FMT_RAW)
 
1632
        (gnutls.library.functions
 
1633
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
 
1634
                                    gnutls.library.constants
 
1635
                                    .GNUTLS_OPENPGP_FMT_RAW))
2472
1636
        # Verify the self signature in the key
2473
1637
        crtverify = ctypes.c_uint()
2474
 
        gnutls.openpgp_crt_verify_self(crt, 0,
2475
 
                                       ctypes.byref(crtverify))
 
1638
        (gnutls.library.functions
 
1639
         .gnutls_openpgp_crt_verify_self(crt, 0,
 
1640
                                         ctypes.byref(crtverify)))
2476
1641
        if crtverify.value != 0:
2477
 
            gnutls.openpgp_crt_deinit(crt)
2478
 
            raise gnutls.CertificateSecurityError(code
2479
 
                                                  =crtverify.value)
 
1642
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
1643
            raise (gnutls.errors.CertificateSecurityError
 
1644
                   ("Verify failed"))
2480
1645
        # New buffer for the fingerprint
2481
1646
        buf = ctypes.create_string_buffer(20)
2482
1647
        buf_len = ctypes.c_size_t()
2483
1648
        # Get the fingerprint from the certificate into the buffer
2484
 
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
 
                                           ctypes.byref(buf_len))
 
1649
        (gnutls.library.functions
 
1650
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
1651
                                             ctypes.byref(buf_len)))
2486
1652
        # Deinit the certificate
2487
 
        gnutls.openpgp_crt_deinit(crt)
 
1653
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2488
1654
        # Convert the buffer to a Python bytestring
2489
1655
        fpr = ctypes.string_at(buf, buf_len.value)
2490
1656
        # Convert the bytestring to hexadecimal notation
2494
1660
 
2495
1661
class MultiprocessingMixIn(object):
2496
1662
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2497
 
 
2498
1663
    def sub_process_main(self, request, address):
2499
1664
        try:
2500
1665
            self.finish_request(request, address)
2501
 
        except Exception:
 
1666
        except:
2502
1667
            self.handle_error(request, address)
2503
1668
        self.close_request(request)
2504
 
 
 
1669
    
2505
1670
    def process_request(self, request, address):
2506
1671
        """Start a new process to process the request."""
2507
 
        proc = multiprocessing.Process(target=self.sub_process_main,
2508
 
                                       args=(request, address))
 
1672
        proc = multiprocessing.Process(target = self.sub_process_main,
 
1673
                                       args = (request,
 
1674
                                               address))
2509
1675
        proc.start()
2510
1676
        return proc
2511
1677
 
2512
1678
 
2513
1679
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2514
1680
    """ adds a pipe to the MixIn """
2515
 
 
2516
1681
    def process_request(self, request, client_address):
2517
1682
        """Overrides and wraps the original process_request().
2518
 
 
 
1683
        
2519
1684
        This function creates a new pipe in self.pipe
2520
1685
        """
2521
1686
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2522
 
 
 
1687
        
2523
1688
        proc = MultiprocessingMixIn.process_request(self, request,
2524
1689
                                                    client_address)
2525
1690
        self.child_pipe.close()
2526
1691
        self.add_pipe(parent_pipe, proc)
2527
 
 
 
1692
    
2528
1693
    def add_pipe(self, parent_pipe, proc):
2529
1694
        """Dummy function; override as necessary"""
2530
 
        raise NotImplementedError()
 
1695
        raise NotImplementedError
2531
1696
 
2532
1697
 
2533
1698
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2534
1699
                     socketserver.TCPServer, object):
2535
1700
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2536
 
 
 
1701
    
2537
1702
    Attributes:
2538
1703
        enabled:        Boolean; whether this server is activated yet
2539
1704
        interface:      None or a network interface name (string)
2540
1705
        use_ipv6:       Boolean; to use IPv6 or not
2541
1706
    """
2542
 
 
2543
1707
    def __init__(self, server_address, RequestHandlerClass,
2544
 
                 interface=None,
2545
 
                 use_ipv6=True,
2546
 
                 socketfd=None):
2547
 
        """If socketfd is set, use that file descriptor instead of
2548
 
        creating a new one with socket.socket().
2549
 
        """
 
1708
                 interface=None, use_ipv6=True):
2550
1709
        self.interface = interface
2551
1710
        if use_ipv6:
2552
1711
            self.address_family = socket.AF_INET6
2553
 
        if socketfd is not None:
2554
 
            # Save the file descriptor
2555
 
            self.socketfd = socketfd
2556
 
            # Save the original socket.socket() function
2557
 
            self.socket_socket = socket.socket
2558
 
 
2559
 
            # To implement --socket, we monkey patch socket.socket.
2560
 
            #
2561
 
            # (When socketserver.TCPServer is a new-style class, we
2562
 
            # could make self.socket into a property instead of monkey
2563
 
            # patching socket.socket.)
2564
 
            #
2565
 
            # Create a one-time-only replacement for socket.socket()
2566
 
            @functools.wraps(socket.socket)
2567
 
            def socket_wrapper(*args, **kwargs):
2568
 
                # Restore original function so subsequent calls are
2569
 
                # not affected.
2570
 
                socket.socket = self.socket_socket
2571
 
                del self.socket_socket
2572
 
                # This time only, return a new socket object from the
2573
 
                # saved file descriptor.
2574
 
                return socket.fromfd(self.socketfd, *args, **kwargs)
2575
 
            # Replace socket.socket() function with wrapper
2576
 
            socket.socket = socket_wrapper
2577
 
        # The socketserver.TCPServer.__init__ will call
2578
 
        # socket.socket(), which might be our replacement,
2579
 
        # socket_wrapper(), if socketfd was set.
2580
1712
        socketserver.TCPServer.__init__(self, server_address,
2581
1713
                                        RequestHandlerClass)
2582
 
 
2583
1714
    def server_bind(self):
2584
1715
        """This overrides the normal server_bind() function
2585
1716
        to bind to an interface if one was specified, and also NOT to
2586
1717
        bind to an address or port if they were not specified."""
2587
 
        global SO_BINDTODEVICE
2588
1718
        if self.interface is not None:
2589
1719
            if SO_BINDTODEVICE is None:
2590
 
                # Fall back to a hard-coded value which seems to be
2591
 
                # common enough.
2592
 
                logger.warning("SO_BINDTODEVICE not found, trying 25")
2593
 
                SO_BINDTODEVICE = 25
2594
 
            try:
2595
 
                self.socket.setsockopt(
2596
 
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
2597
 
                    (self.interface + "\0").encode("utf-8"))
2598
 
            except socket.error as error:
2599
 
                if error.errno == errno.EPERM:
2600
 
                    logger.error("No permission to bind to"
2601
 
                                 " interface %s", self.interface)
2602
 
                elif error.errno == errno.ENOPROTOOPT:
2603
 
                    logger.error("SO_BINDTODEVICE not available;"
2604
 
                                 " cannot bind to interface %s",
2605
 
                                 self.interface)
2606
 
                elif error.errno == errno.ENODEV:
2607
 
                    logger.error("Interface %s does not exist,"
2608
 
                                 " cannot bind", self.interface)
2609
 
                else:
2610
 
                    raise
 
1720
                logger.error("SO_BINDTODEVICE does not exist;"
 
1721
                             " cannot bind to interface %s",
 
1722
                             self.interface)
 
1723
            else:
 
1724
                try:
 
1725
                    self.socket.setsockopt(socket.SOL_SOCKET,
 
1726
                                           SO_BINDTODEVICE,
 
1727
                                           str(self.interface
 
1728
                                               + '\0'))
 
1729
                except socket.error as error:
 
1730
                    if error[0] == errno.EPERM:
 
1731
                        logger.error("No permission to"
 
1732
                                     " bind to interface %s",
 
1733
                                     self.interface)
 
1734
                    elif error[0] == errno.ENOPROTOOPT:
 
1735
                        logger.error("SO_BINDTODEVICE not available;"
 
1736
                                     " cannot bind to interface %s",
 
1737
                                     self.interface)
 
1738
                    else:
 
1739
                        raise
2611
1740
        # Only bind(2) the socket if we really need to.
2612
1741
        if self.server_address[0] or self.server_address[1]:
2613
 
            if self.server_address[1]:
2614
 
                self.allow_reuse_address = True
2615
1742
            if not self.server_address[0]:
2616
1743
                if self.address_family == socket.AF_INET6:
2617
 
                    any_address = "::"  # in6addr_any
 
1744
                    any_address = "::" # in6addr_any
2618
1745
                else:
2619
 
                    any_address = "0.0.0.0"  # INADDR_ANY
 
1746
                    any_address = socket.INADDR_ANY
2620
1747
                self.server_address = (any_address,
2621
1748
                                       self.server_address[1])
2622
1749
            elif not self.server_address[1]:
2623
 
                self.server_address = (self.server_address[0], 0)
 
1750
                self.server_address = (self.server_address[0],
 
1751
                                       0)
2624
1752
#                 if self.interface:
2625
1753
#                     self.server_address = (self.server_address[0],
2626
1754
#                                            0, # port
2632
1760
 
2633
1761
class MandosServer(IPv6_TCPServer):
2634
1762
    """Mandos server.
2635
 
 
 
1763
    
2636
1764
    Attributes:
2637
1765
        clients:        set of Client objects
2638
1766
        gnutls_priority GnuTLS priority string
2639
1767
        use_dbus:       Boolean; to emit D-Bus signals or not
2640
 
 
2641
 
    Assumes a GLib.MainLoop event loop.
 
1768
    
 
1769
    Assumes a gobject.MainLoop event loop.
2642
1770
    """
2643
 
 
2644
1771
    def __init__(self, server_address, RequestHandlerClass,
2645
 
                 interface=None,
2646
 
                 use_ipv6=True,
2647
 
                 clients=None,
2648
 
                 gnutls_priority=None,
2649
 
                 use_dbus=True,
2650
 
                 socketfd=None):
 
1772
                 interface=None, use_ipv6=True, clients=None,
 
1773
                 gnutls_priority=None, use_dbus=True):
2651
1774
        self.enabled = False
2652
1775
        self.clients = clients
2653
1776
        if self.clients is None:
2656
1779
        self.gnutls_priority = gnutls_priority
2657
1780
        IPv6_TCPServer.__init__(self, server_address,
2658
1781
                                RequestHandlerClass,
2659
 
                                interface=interface,
2660
 
                                use_ipv6=use_ipv6,
2661
 
                                socketfd=socketfd)
2662
 
 
 
1782
                                interface = interface,
 
1783
                                use_ipv6 = use_ipv6)
2663
1784
    def server_activate(self):
2664
1785
        if self.enabled:
2665
1786
            return socketserver.TCPServer.server_activate(self)
2666
 
 
 
1787
    
2667
1788
    def enable(self):
2668
1789
        self.enabled = True
2669
 
 
 
1790
    
2670
1791
    def add_pipe(self, parent_pipe, proc):
2671
1792
        # Call "handle_ipc" for both data and EOF events
2672
 
        GLib.io_add_watch(
2673
 
            parent_pipe.fileno(),
2674
 
            GLib.IO_IN | GLib.IO_HUP,
2675
 
            functools.partial(self.handle_ipc,
2676
 
                              parent_pipe=parent_pipe,
2677
 
                              proc=proc))
2678
 
 
2679
 
    def handle_ipc(self, source, condition,
2680
 
                   parent_pipe=None,
2681
 
                   proc=None,
2682
 
                   client_object=None):
 
1793
        gobject.io_add_watch(parent_pipe.fileno(),
 
1794
                             gobject.IO_IN | gobject.IO_HUP,
 
1795
                             functools.partial(self.handle_ipc,
 
1796
                                               parent_pipe =
 
1797
                                               parent_pipe,
 
1798
                                               proc = proc))
 
1799
    
 
1800
    def handle_ipc(self, source, condition, parent_pipe=None,
 
1801
                   proc = None, client_object=None):
 
1802
        condition_names = {
 
1803
            gobject.IO_IN: "IN",   # There is data to read.
 
1804
            gobject.IO_OUT: "OUT", # Data can be written (without
 
1805
                                    # blocking).
 
1806
            gobject.IO_PRI: "PRI", # There is urgent data to read.
 
1807
            gobject.IO_ERR: "ERR", # Error condition.
 
1808
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
 
1809
                                    # broken, usually for pipes and
 
1810
                                    # sockets).
 
1811
            }
 
1812
        conditions_string = ' | '.join(name
 
1813
                                       for cond, name in
 
1814
                                       condition_names.iteritems()
 
1815
                                       if cond & condition)
2683
1816
        # error, or the other end of multiprocessing.Pipe has closed
2684
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
 
1817
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2685
1818
            # Wait for other process to exit
2686
1819
            proc.join()
2687
1820
            return False
2688
 
 
 
1821
        
2689
1822
        # Read a request from the child
2690
1823
        request = parent_pipe.recv()
2691
1824
        command = request[0]
2692
 
 
 
1825
        
2693
1826
        if command == 'init':
2694
 
            key_id = request[1].decode("ascii")
2695
 
            fpr = request[2].decode("ascii")
2696
 
            address = request[3]
2697
 
 
2698
 
            for c in self.clients.values():
2699
 
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2700
 
                    continue
2701
 
                if key_id and c.key_id == key_id:
2702
 
                    client = c
2703
 
                    break
2704
 
                if fpr and c.fingerprint == fpr:
 
1827
            fpr = request[1]
 
1828
            address = request[2]
 
1829
            
 
1830
            for c in self.clients.itervalues():
 
1831
                if c.fingerprint == fpr:
2705
1832
                    client = c
2706
1833
                    break
2707
1834
            else:
2708
 
                logger.info("Client not found for key ID: %s, address"
2709
 
                            ": %s", key_id or fpr, address)
 
1835
                logger.info("Client not found for fingerprint: %s, ad"
 
1836
                            "dress: %s", fpr, address)
2710
1837
                if self.use_dbus:
2711
1838
                    # Emit D-Bus signal
2712
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
 
1839
                    mandos_dbus_service.ClientNotFound(fpr,
2713
1840
                                                       address[0])
2714
1841
                parent_pipe.send(False)
2715
1842
                return False
2716
 
 
2717
 
            GLib.io_add_watch(
2718
 
                parent_pipe.fileno(),
2719
 
                GLib.IO_IN | GLib.IO_HUP,
2720
 
                functools.partial(self.handle_ipc,
2721
 
                                  parent_pipe=parent_pipe,
2722
 
                                  proc=proc,
2723
 
                                  client_object=client))
 
1843
            
 
1844
            gobject.io_add_watch(parent_pipe.fileno(),
 
1845
                                 gobject.IO_IN | gobject.IO_HUP,
 
1846
                                 functools.partial(self.handle_ipc,
 
1847
                                                   parent_pipe =
 
1848
                                                   parent_pipe,
 
1849
                                                   proc = proc,
 
1850
                                                   client_object =
 
1851
                                                   client))
2724
1852
            parent_pipe.send(True)
2725
1853
            # remove the old hook in favor of the new above hook on
2726
1854
            # same fileno
2729
1857
            funcname = request[1]
2730
1858
            args = request[2]
2731
1859
            kwargs = request[3]
2732
 
 
 
1860
            
2733
1861
            parent_pipe.send(('data', getattr(client_object,
2734
1862
                                              funcname)(*args,
2735
 
                                                        **kwargs)))
2736
 
 
 
1863
                                                         **kwargs)))
 
1864
        
2737
1865
        if command == 'getattr':
2738
1866
            attrname = request[1]
2739
 
            if isinstance(client_object.__getattribute__(attrname),
2740
 
                          collections.Callable):
2741
 
                parent_pipe.send(('function', ))
 
1867
            if callable(client_object.__getattribute__(attrname)):
 
1868
                parent_pipe.send(('function',))
2742
1869
            else:
2743
 
                parent_pipe.send((
2744
 
                    'data', client_object.__getattribute__(attrname)))
2745
 
 
 
1870
                parent_pipe.send(('data', client_object
 
1871
                                  .__getattribute__(attrname)))
 
1872
        
2746
1873
        if command == 'setattr':
2747
1874
            attrname = request[1]
2748
1875
            value = request[2]
2749
1876
            setattr(client_object, attrname, value)
2750
 
 
 
1877
        
2751
1878
        return True
2752
1879
 
2753
1880
 
2754
 
def rfc3339_duration_to_delta(duration):
2755
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2756
 
 
2757
 
    >>> rfc3339_duration_to_delta("P7D")
2758
 
    datetime.timedelta(7)
2759
 
    >>> rfc3339_duration_to_delta("PT60S")
2760
 
    datetime.timedelta(0, 60)
2761
 
    >>> rfc3339_duration_to_delta("PT60M")
2762
 
    datetime.timedelta(0, 3600)
2763
 
    >>> rfc3339_duration_to_delta("PT24H")
2764
 
    datetime.timedelta(1)
2765
 
    >>> rfc3339_duration_to_delta("P1W")
2766
 
    datetime.timedelta(7)
2767
 
    >>> rfc3339_duration_to_delta("PT5M30S")
2768
 
    datetime.timedelta(0, 330)
2769
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2770
 
    datetime.timedelta(1, 200)
2771
 
    """
2772
 
 
2773
 
    # Parsing an RFC 3339 duration with regular expressions is not
2774
 
    # possible - there would have to be multiple places for the same
2775
 
    # values, like seconds.  The current code, while more esoteric, is
2776
 
    # cleaner without depending on a parsing library.  If Python had a
2777
 
    # built-in library for parsing we would use it, but we'd like to
2778
 
    # avoid excessive use of external libraries.
2779
 
 
2780
 
    # New type for defining tokens, syntax, and semantics all-in-one
2781
 
    Token = collections.namedtuple("Token", (
2782
 
        "regexp",  # To match token; if "value" is not None, must have
2783
 
                   # a "group" containing digits
2784
 
        "value",   # datetime.timedelta or None
2785
 
        "followers"))           # Tokens valid after this token
2786
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
2787
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
2788
 
    token_end = Token(re.compile(r"$"), None, frozenset())
2789
 
    token_second = Token(re.compile(r"(\d+)S"),
2790
 
                         datetime.timedelta(seconds=1),
2791
 
                         frozenset((token_end, )))
2792
 
    token_minute = Token(re.compile(r"(\d+)M"),
2793
 
                         datetime.timedelta(minutes=1),
2794
 
                         frozenset((token_second, token_end)))
2795
 
    token_hour = Token(re.compile(r"(\d+)H"),
2796
 
                       datetime.timedelta(hours=1),
2797
 
                       frozenset((token_minute, token_end)))
2798
 
    token_time = Token(re.compile(r"T"),
2799
 
                       None,
2800
 
                       frozenset((token_hour, token_minute,
2801
 
                                  token_second)))
2802
 
    token_day = Token(re.compile(r"(\d+)D"),
2803
 
                      datetime.timedelta(days=1),
2804
 
                      frozenset((token_time, token_end)))
2805
 
    token_month = Token(re.compile(r"(\d+)M"),
2806
 
                        datetime.timedelta(weeks=4),
2807
 
                        frozenset((token_day, token_end)))
2808
 
    token_year = Token(re.compile(r"(\d+)Y"),
2809
 
                       datetime.timedelta(weeks=52),
2810
 
                       frozenset((token_month, token_end)))
2811
 
    token_week = Token(re.compile(r"(\d+)W"),
2812
 
                       datetime.timedelta(weeks=1),
2813
 
                       frozenset((token_end, )))
2814
 
    token_duration = Token(re.compile(r"P"), None,
2815
 
                           frozenset((token_year, token_month,
2816
 
                                      token_day, token_time,
2817
 
                                      token_week)))
2818
 
    # Define starting values:
2819
 
    # Value so far
2820
 
    value = datetime.timedelta()
2821
 
    found_token = None
2822
 
    # Following valid tokens
2823
 
    followers = frozenset((token_duration, ))
2824
 
    # String left to parse
2825
 
    s = duration
2826
 
    # Loop until end token is found
2827
 
    while found_token is not token_end:
2828
 
        # Search for any currently valid tokens
2829
 
        for token in followers:
2830
 
            match = token.regexp.match(s)
2831
 
            if match is not None:
2832
 
                # Token found
2833
 
                if token.value is not None:
2834
 
                    # Value found, parse digits
2835
 
                    factor = int(match.group(1), 10)
2836
 
                    # Add to value so far
2837
 
                    value += factor * token.value
2838
 
                # Strip token from string
2839
 
                s = token.regexp.sub("", s, 1)
2840
 
                # Go to found token
2841
 
                found_token = token
2842
 
                # Set valid next tokens
2843
 
                followers = found_token.followers
2844
 
                break
2845
 
        else:
2846
 
            # No currently valid tokens were found
2847
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
2848
 
                             .format(duration))
2849
 
    # End token found
2850
 
    return value
2851
 
 
2852
 
 
2853
1881
def string_to_delta(interval):
2854
1882
    """Parse a string and return a datetime.timedelta
2855
 
 
 
1883
    
2856
1884
    >>> string_to_delta('7d')
2857
1885
    datetime.timedelta(7)
2858
1886
    >>> string_to_delta('60s')
2866
1894
    >>> string_to_delta('5m 30s')
2867
1895
    datetime.timedelta(0, 330)
2868
1896
    """
2869
 
 
2870
 
    try:
2871
 
        return rfc3339_duration_to_delta(interval)
2872
 
    except ValueError:
2873
 
        pass
2874
 
 
2875
1897
    timevalue = datetime.timedelta(0)
2876
1898
    for s in interval.split():
2877
1899
        try:
2878
 
            suffix = s[-1]
 
1900
            suffix = unicode(s[-1])
2879
1901
            value = int(s[:-1])
2880
1902
            if suffix == "d":
2881
1903
                delta = datetime.timedelta(value)
2888
1910
            elif suffix == "w":
2889
1911
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2890
1912
            else:
2891
 
                raise ValueError("Unknown suffix {!r}".format(suffix))
2892
 
        except IndexError as e:
 
1913
                raise ValueError("Unknown suffix %r" % suffix)
 
1914
        except (ValueError, IndexError) as e:
2893
1915
            raise ValueError(*(e.args))
2894
1916
        timevalue += delta
2895
1917
    return timevalue
2896
1918
 
2897
1919
 
2898
 
def daemon(nochdir=False, noclose=False):
 
1920
def daemon(nochdir = False, noclose = False):
2899
1921
    """See daemon(3).  Standard BSD Unix function.
2900
 
 
 
1922
    
2901
1923
    This should really exist as os.daemon, but it doesn't (yet)."""
2902
1924
    if os.fork():
2903
1925
        sys.exit()
2908
1930
        sys.exit()
2909
1931
    if not noclose:
2910
1932
        # Close all standard open file descriptors
2911
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1933
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2912
1934
        if not stat.S_ISCHR(os.fstat(null).st_mode):
2913
1935
            raise OSError(errno.ENODEV,
2914
 
                          "{} not a character device"
2915
 
                          .format(os.devnull))
 
1936
                          "%s not a character device"
 
1937
                          % os.path.devnull)
2916
1938
        os.dup2(null, sys.stdin.fileno())
2917
1939
        os.dup2(null, sys.stdout.fileno())
2918
1940
        os.dup2(null, sys.stderr.fileno())
2921
1943
 
2922
1944
 
2923
1945
def main():
2924
 
 
 
1946
    
2925
1947
    ##################################################################
2926
1948
    # Parsing of options, both command line and config file
2927
 
 
 
1949
    
2928
1950
    parser = argparse.ArgumentParser()
2929
1951
    parser.add_argument("-v", "--version", action="version",
2930
 
                        version="%(prog)s {}".format(version),
 
1952
                        version = "%%(prog)s %s" % version,
2931
1953
                        help="show version number and exit")
2932
1954
    parser.add_argument("-i", "--interface", metavar="IF",
2933
1955
                        help="Bind to interface IF")
2939
1961
                        help="Run self-test")
2940
1962
    parser.add_argument("--debug", action="store_true",
2941
1963
                        help="Debug mode; run in foreground and log"
2942
 
                        " to terminal", default=None)
 
1964
                        " to terminal")
2943
1965
    parser.add_argument("--debuglevel", metavar="LEVEL",
2944
1966
                        help="Debug level for stdout output")
2945
1967
    parser.add_argument("--priority", help="GnuTLS"
2952
1974
                        " files")
2953
1975
    parser.add_argument("--no-dbus", action="store_false",
2954
1976
                        dest="use_dbus", help="Do not provide D-Bus"
2955
 
                        " system bus interface", default=None)
 
1977
                        " system bus interface")
2956
1978
    parser.add_argument("--no-ipv6", action="store_false",
2957
 
                        dest="use_ipv6", help="Do not use IPv6",
2958
 
                        default=None)
 
1979
                        dest="use_ipv6", help="Do not use IPv6")
2959
1980
    parser.add_argument("--no-restore", action="store_false",
2960
1981
                        dest="restore", help="Do not restore stored"
2961
 
                        " state", default=None)
2962
 
    parser.add_argument("--socket", type=int,
2963
 
                        help="Specify a file descriptor to a network"
2964
 
                        " socket to use instead of creating one")
 
1982
                        " state")
2965
1983
    parser.add_argument("--statedir", metavar="DIR",
2966
1984
                        help="Directory to save/restore state in")
2967
 
    parser.add_argument("--foreground", action="store_true",
2968
 
                        help="Run in foreground", default=None)
2969
 
    parser.add_argument("--no-zeroconf", action="store_false",
2970
 
                        dest="zeroconf", help="Do not use Zeroconf",
2971
 
                        default=None)
2972
 
 
 
1985
    
2973
1986
    options = parser.parse_args()
2974
 
 
 
1987
    
2975
1988
    if options.check:
2976
1989
        import doctest
2977
 
        fail_count, test_count = doctest.testmod()
2978
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
2979
 
 
 
1990
        doctest.testmod()
 
1991
        sys.exit()
 
1992
    
2980
1993
    # Default values for config file for server-global settings
2981
 
    if gnutls.has_rawpk:
2982
 
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2983
 
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2984
 
    else:
2985
 
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2986
 
                    ":+SIGN-DSA-SHA256")
2987
 
    server_defaults = {"interface": "",
2988
 
                       "address": "",
2989
 
                       "port": "",
2990
 
                       "debug": "False",
2991
 
                       "priority": priority,
2992
 
                       "servicename": "Mandos",
2993
 
                       "use_dbus": "True",
2994
 
                       "use_ipv6": "True",
2995
 
                       "debuglevel": "",
2996
 
                       "restore": "True",
2997
 
                       "socket": "",
2998
 
                       "statedir": "/var/lib/mandos",
2999
 
                       "foreground": "False",
3000
 
                       "zeroconf": "True",
3001
 
                       }
3002
 
    del priority
3003
 
 
 
1994
    server_defaults = { "interface": "",
 
1995
                        "address": "",
 
1996
                        "port": "",
 
1997
                        "debug": "False",
 
1998
                        "priority":
 
1999
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
 
2000
                        "servicename": "Mandos",
 
2001
                        "use_dbus": "True",
 
2002
                        "use_ipv6": "True",
 
2003
                        "debuglevel": "",
 
2004
                        "restore": "True",
 
2005
                        "statedir": "/var/lib/mandos"
 
2006
                        }
 
2007
    
3004
2008
    # Parse config file for server-global settings
3005
 
    server_config = configparser.ConfigParser(server_defaults)
 
2009
    server_config = configparser.SafeConfigParser(server_defaults)
3006
2010
    del server_defaults
3007
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
3008
 
    # Convert the ConfigParser object to a dict
 
2011
    server_config.read(os.path.join(options.configdir,
 
2012
                                    "mandos.conf"))
 
2013
    # Convert the SafeConfigParser object to a dict
3009
2014
    server_settings = server_config.defaults()
3010
2015
    # Use the appropriate methods on the non-string config options
3011
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
 
                   "foreground", "zeroconf"):
 
2016
    for option in ("debug", "use_dbus", "use_ipv6"):
3013
2017
        server_settings[option] = server_config.getboolean("DEFAULT",
3014
2018
                                                           option)
3015
2019
    if server_settings["port"]:
3016
2020
        server_settings["port"] = server_config.getint("DEFAULT",
3017
2021
                                                       "port")
3018
 
    if server_settings["socket"]:
3019
 
        server_settings["socket"] = server_config.getint("DEFAULT",
3020
 
                                                         "socket")
3021
 
        # Later, stdin will, and stdout and stderr might, be dup'ed
3022
 
        # over with an opened os.devnull.  But we don't want this to
3023
 
        # happen with a supplied network socket.
3024
 
        if 0 <= server_settings["socket"] <= 2:
3025
 
            server_settings["socket"] = os.dup(server_settings
3026
 
                                               ["socket"])
3027
2022
    del server_config
3028
 
 
 
2023
    
3029
2024
    # Override the settings from the config file with command line
3030
2025
    # options, if set.
3031
2026
    for option in ("interface", "address", "port", "debug",
3032
 
                   "priority", "servicename", "configdir", "use_dbus",
3033
 
                   "use_ipv6", "debuglevel", "restore", "statedir",
3034
 
                   "socket", "foreground", "zeroconf"):
 
2027
                   "priority", "servicename", "configdir",
 
2028
                   "use_dbus", "use_ipv6", "debuglevel", "restore",
 
2029
                   "statedir"):
3035
2030
        value = getattr(options, option)
3036
2031
        if value is not None:
3037
2032
            server_settings[option] = value
3038
2033
    del options
3039
2034
    # Force all strings to be unicode
3040
2035
    for option in server_settings.keys():
3041
 
        if isinstance(server_settings[option], bytes):
3042
 
            server_settings[option] = (server_settings[option]
3043
 
                                       .decode("utf-8"))
3044
 
    # Force all boolean options to be boolean
3045
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3046
 
                   "foreground", "zeroconf"):
3047
 
        server_settings[option] = bool(server_settings[option])
3048
 
    # Debug implies foreground
3049
 
    if server_settings["debug"]:
3050
 
        server_settings["foreground"] = True
 
2036
        if type(server_settings[option]) is str:
 
2037
            server_settings[option] = unicode(server_settings[option])
3051
2038
    # Now we have our good server settings in "server_settings"
3052
 
 
 
2039
    
3053
2040
    ##################################################################
3054
 
 
3055
 
    if (not server_settings["zeroconf"]
3056
 
        and not (server_settings["port"]
3057
 
                 or server_settings["socket"] != "")):
3058
 
        parser.error("Needs port or socket to work without Zeroconf")
3059
 
 
 
2041
    
3060
2042
    # For convenience
3061
2043
    debug = server_settings["debug"]
3062
2044
    debuglevel = server_settings["debuglevel"]
3064
2046
    use_ipv6 = server_settings["use_ipv6"]
3065
2047
    stored_state_path = os.path.join(server_settings["statedir"],
3066
2048
                                     stored_state_file)
3067
 
    foreground = server_settings["foreground"]
3068
 
    zeroconf = server_settings["zeroconf"]
3069
 
 
 
2049
    
3070
2050
    if debug:
3071
 
        initlogger(debug, logging.DEBUG)
 
2051
        initlogger(logging.DEBUG)
3072
2052
    else:
3073
2053
        if not debuglevel:
3074
 
            initlogger(debug)
 
2054
            initlogger()
3075
2055
        else:
3076
2056
            level = getattr(logging, debuglevel.upper())
3077
 
            initlogger(debug, level)
3078
 
 
 
2057
            initlogger(level)
 
2058
    
3079
2059
    if server_settings["servicename"] != "Mandos":
3080
 
        syslogger.setFormatter(
3081
 
            logging.Formatter('Mandos ({}) [%(process)d]:'
3082
 
                              ' %(levelname)s: %(message)s'.format(
3083
 
                                  server_settings["servicename"])))
3084
 
 
 
2060
        syslogger.setFormatter(logging.Formatter
 
2061
                               ('Mandos (%s) [%%(process)d]:'
 
2062
                                ' %%(levelname)s: %%(message)s'
 
2063
                                % server_settings["servicename"]))
 
2064
    
3085
2065
    # Parse config file with clients
3086
 
    client_config = configparser.ConfigParser(Client.client_defaults)
 
2066
    client_defaults = { "timeout": "5m",
 
2067
                        "extended_timeout": "15m",
 
2068
                        "interval": "2m",
 
2069
                        "checker": "fping -q -- %%(host)s",
 
2070
                        "host": "",
 
2071
                        "approval_delay": "0s",
 
2072
                        "approval_duration": "1s",
 
2073
                        }
 
2074
    client_config = configparser.SafeConfigParser(client_defaults)
3087
2075
    client_config.read(os.path.join(server_settings["configdir"],
3088
2076
                                    "clients.conf"))
3089
 
 
 
2077
    
3090
2078
    global mandos_dbus_service
3091
2079
    mandos_dbus_service = None
3092
 
 
3093
 
    socketfd = None
3094
 
    if server_settings["socket"] != "":
3095
 
        socketfd = server_settings["socket"]
3096
 
    tcp_server = MandosServer(
3097
 
        (server_settings["address"], server_settings["port"]),
3098
 
        ClientHandler,
3099
 
        interface=(server_settings["interface"] or None),
3100
 
        use_ipv6=use_ipv6,
3101
 
        gnutls_priority=server_settings["priority"],
3102
 
        use_dbus=use_dbus,
3103
 
        socketfd=socketfd)
3104
 
    if not foreground:
3105
 
        pidfilename = "/run/mandos.pid"
3106
 
        if not os.path.isdir("/run/."):
3107
 
            pidfilename = "/var/run/mandos.pid"
3108
 
        pidfile = None
3109
 
        try:
3110
 
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3111
 
        except IOError as e:
3112
 
            logger.error("Could not open file %r", pidfilename,
3113
 
                         exc_info=e)
3114
 
 
3115
 
    for name, group in (("_mandos", "_mandos"),
3116
 
                        ("mandos", "mandos"),
3117
 
                        ("nobody", "nogroup")):
3118
 
        try:
3119
 
            uid = pwd.getpwnam(name).pw_uid
3120
 
            gid = pwd.getpwnam(group).pw_gid
3121
 
            break
 
2080
    
 
2081
    tcp_server = MandosServer((server_settings["address"],
 
2082
                               server_settings["port"]),
 
2083
                              ClientHandler,
 
2084
                              interface=(server_settings["interface"]
 
2085
                                         or None),
 
2086
                              use_ipv6=use_ipv6,
 
2087
                              gnutls_priority=
 
2088
                              server_settings["priority"],
 
2089
                              use_dbus=use_dbus)
 
2090
    if not debug:
 
2091
        pidfilename = "/var/run/mandos.pid"
 
2092
        try:
 
2093
            pidfile = open(pidfilename, "w")
 
2094
        except IOError:
 
2095
            logger.error("Could not open file %r", pidfilename)
 
2096
    
 
2097
    try:
 
2098
        uid = pwd.getpwnam("_mandos").pw_uid
 
2099
        gid = pwd.getpwnam("_mandos").pw_gid
 
2100
    except KeyError:
 
2101
        try:
 
2102
            uid = pwd.getpwnam("mandos").pw_uid
 
2103
            gid = pwd.getpwnam("mandos").pw_gid
3122
2104
        except KeyError:
3123
 
            continue
3124
 
    else:
3125
 
        uid = 65534
3126
 
        gid = 65534
 
2105
            try:
 
2106
                uid = pwd.getpwnam("nobody").pw_uid
 
2107
                gid = pwd.getpwnam("nobody").pw_gid
 
2108
            except KeyError:
 
2109
                uid = 65534
 
2110
                gid = 65534
3127
2111
    try:
3128
2112
        os.setgid(gid)
3129
2113
        os.setuid(uid)
3130
 
        if debug:
3131
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
3132
 
                                                             gid))
3133
2114
    except OSError as error:
3134
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
3135
 
                       .format(uid, gid, os.strerror(error.errno)))
3136
 
        if error.errno != errno.EPERM:
3137
 
            raise
3138
 
 
 
2115
        if error[0] != errno.EPERM:
 
2116
            raise error
 
2117
    
3139
2118
    if debug:
3140
2119
        # Enable all possible GnuTLS debugging
3141
 
 
 
2120
        
3142
2121
        # "Use a log level over 10 to enable all debugging options."
3143
2122
        # - GnuTLS manual
3144
 
        gnutls.global_set_log_level(11)
3145
 
 
3146
 
        @gnutls.log_func
 
2123
        gnutls.library.functions.gnutls_global_set_log_level(11)
 
2124
        
 
2125
        @gnutls.library.types.gnutls_log_func
3147
2126
        def debug_gnutls(level, string):
3148
2127
            logger.debug("GnuTLS: %s", string[:-1])
3149
 
 
3150
 
        gnutls.global_set_log_function(debug_gnutls)
3151
 
 
 
2128
        
 
2129
        (gnutls.library.functions
 
2130
         .gnutls_global_set_log_function(debug_gnutls))
 
2131
        
3152
2132
        # Redirect stdin so all checkers get /dev/null
3153
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
2133
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3154
2134
        os.dup2(null, sys.stdin.fileno())
3155
2135
        if null > 2:
3156
2136
            os.close(null)
3157
 
 
 
2137
    else:
 
2138
        # No console logging
 
2139
        logger.removeHandler(console)
 
2140
    
3158
2141
    # Need to fork before connecting to D-Bus
3159
 
    if not foreground:
 
2142
    if not debug:
3160
2143
        # Close all input and output, do double fork, etc.
3161
2144
        daemon()
3162
 
 
3163
 
    if gi.version_info < (3, 10, 2):
3164
 
        # multiprocessing will use threads, so before we use GLib we
3165
 
        # need to inform GLib that threads will be used.
3166
 
        GLib.threads_init()
3167
 
 
 
2145
    
3168
2146
    global main_loop
3169
2147
    # From the Avahi example code
3170
 
    DBusGMainLoop(set_as_default=True)
3171
 
    main_loop = GLib.MainLoop()
 
2148
    DBusGMainLoop(set_as_default=True )
 
2149
    main_loop = gobject.MainLoop()
3172
2150
    bus = dbus.SystemBus()
3173
2151
    # End of Avahi example code
3174
2152
    if use_dbus:
3175
2153
        try:
3176
2154
            bus_name = dbus.service.BusName("se.recompile.Mandos",
3177
 
                                            bus,
3178
 
                                            do_not_queue=True)
3179
 
            old_bus_name = dbus.service.BusName(
3180
 
                "se.bsnet.fukt.Mandos", bus,
3181
 
                do_not_queue=True)
3182
 
        except dbus.exceptions.DBusException as e:
3183
 
            logger.error("Disabling D-Bus:", exc_info=e)
 
2155
                                            bus, do_not_queue=True)
 
2156
            old_bus_name = (dbus.service.BusName
 
2157
                            ("se.bsnet.fukt.Mandos", bus,
 
2158
                             do_not_queue=True))
 
2159
        except dbus.exceptions.NameExistsException as e:
 
2160
            logger.error(unicode(e) + ", disabling D-Bus")
3184
2161
            use_dbus = False
3185
2162
            server_settings["use_dbus"] = False
3186
2163
            tcp_server.use_dbus = False
3187
 
    if zeroconf:
3188
 
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3189
 
        service = AvahiServiceToSyslog(
3190
 
            name=server_settings["servicename"],
3191
 
            servicetype="_mandos._tcp",
3192
 
            protocol=protocol,
3193
 
            bus=bus)
3194
 
        if server_settings["interface"]:
3195
 
            service.interface = if_nametoindex(
3196
 
                server_settings["interface"].encode("utf-8"))
3197
 
 
 
2164
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
2165
    service = AvahiServiceToSyslog(name =
 
2166
                                   server_settings["servicename"],
 
2167
                                   servicetype = "_mandos._tcp",
 
2168
                                   protocol = protocol, bus = bus)
 
2169
    if server_settings["interface"]:
 
2170
        service.interface = (if_nametoindex
 
2171
                             (str(server_settings["interface"])))
 
2172
    
3198
2173
    global multiprocessing_manager
3199
2174
    multiprocessing_manager = multiprocessing.Manager()
3200
 
 
 
2175
    
3201
2176
    client_class = Client
3202
2177
    if use_dbus:
3203
 
        client_class = functools.partial(ClientDBus, bus=bus)
3204
 
 
3205
 
    client_settings = Client.config_parser(client_config)
 
2178
        client_class = functools.partial(ClientDBusTransitional,
 
2179
                                         bus = bus)
 
2180
    
 
2181
    special_settings = {
 
2182
        # Some settings need to be accessd by special methods;
 
2183
        # booleans need .getboolean(), etc.  Here is a list of them:
 
2184
        "approved_by_default":
 
2185
            lambda section:
 
2186
            client_config.getboolean(section, "approved_by_default"),
 
2187
        "enabled":
 
2188
            lambda section:
 
2189
            client_config.getboolean(section, "enabled"),
 
2190
        }
 
2191
    # Construct a new dict of client settings of this form:
 
2192
    # { client_name: {setting_name: value, ...}, ...}
 
2193
    # with exceptions for any special settings as defined above
 
2194
    client_settings = dict((clientname,
 
2195
                           dict((setting,
 
2196
                                 (value
 
2197
                                  if setting not in special_settings
 
2198
                                  else special_settings[setting]
 
2199
                                  (clientname)))
 
2200
                                for setting, value in
 
2201
                                client_config.items(clientname)))
 
2202
                          for clientname in client_config.sections())
 
2203
    
3206
2204
    old_client_settings = {}
3207
 
    clients_data = {}
3208
 
 
3209
 
    # This is used to redirect stdout and stderr for checker processes
3210
 
    global wnull
3211
 
    wnull = open(os.devnull, "w")  # A writable /dev/null
3212
 
    # Only used if server is running in foreground but not in debug
3213
 
    # mode
3214
 
    if debug or not foreground:
3215
 
        wnull.close()
3216
 
 
 
2205
    clients_data = []
 
2206
    
3217
2207
    # Get client data and settings from last running state.
3218
2208
    if server_settings["restore"]:
3219
2209
        try:
3220
2210
            with open(stored_state_path, "rb") as stored_state:
3221
 
                if sys.version_info.major == 2:
3222
 
                    clients_data, old_client_settings = pickle.load(
3223
 
                        stored_state)
3224
 
                else:
3225
 
                    bytes_clients_data, bytes_old_client_settings = (
3226
 
                        pickle.load(stored_state, encoding="bytes"))
3227
 
                    #   Fix bytes to strings
3228
 
                    #  clients_data
3229
 
                    # .keys()
3230
 
                    clients_data = {(key.decode("utf-8")
3231
 
                                     if isinstance(key, bytes)
3232
 
                                     else key): value
3233
 
                                    for key, value in
3234
 
                                    bytes_clients_data.items()}
3235
 
                    del bytes_clients_data
3236
 
                    for key in clients_data:
3237
 
                        value = {(k.decode("utf-8")
3238
 
                                  if isinstance(k, bytes) else k): v
3239
 
                                 for k, v in
3240
 
                                 clients_data[key].items()}
3241
 
                        clients_data[key] = value
3242
 
                        # .client_structure
3243
 
                        value["client_structure"] = [
3244
 
                            (s.decode("utf-8")
3245
 
                             if isinstance(s, bytes)
3246
 
                             else s) for s in
3247
 
                            value["client_structure"]]
3248
 
                        # .name & .host
3249
 
                        for k in ("name", "host"):
3250
 
                            if isinstance(value[k], bytes):
3251
 
                                value[k] = value[k].decode("utf-8")
3252
 
                        if "key_id" not in value:
3253
 
                            value["key_id"] = ""
3254
 
                        elif "fingerprint" not in value:
3255
 
                            value["fingerprint"] = ""
3256
 
                    #  old_client_settings
3257
 
                    # .keys()
3258
 
                    old_client_settings = {
3259
 
                        (key.decode("utf-8")
3260
 
                         if isinstance(key, bytes)
3261
 
                         else key): value
3262
 
                        for key, value in
3263
 
                        bytes_old_client_settings.items()}
3264
 
                    del bytes_old_client_settings
3265
 
                    # .host
3266
 
                    for value in old_client_settings.values():
3267
 
                        if isinstance(value["host"], bytes):
3268
 
                            value["host"] = (value["host"]
3269
 
                                             .decode("utf-8"))
 
2211
                clients_data, old_client_settings = (pickle.load
 
2212
                                                     (stored_state))
3270
2213
            os.remove(stored_state_path)
3271
2214
        except IOError as e:
3272
 
            if e.errno == errno.ENOENT:
3273
 
                logger.warning("Could not load persistent state:"
3274
 
                               " {}".format(os.strerror(e.errno)))
3275
 
            else:
3276
 
                logger.critical("Could not load persistent state:",
3277
 
                                exc_info=e)
 
2215
            logger.warning("Could not load persistent state: {0}"
 
2216
                           .format(e))
 
2217
            if e.errno != errno.ENOENT:
3278
2218
                raise
3279
 
        except EOFError as e:
3280
 
            logger.warning("Could not load persistent state: "
3281
 
                           "EOFError:",
3282
 
                           exc_info=e)
3283
 
 
3284
 
    with PGPEngine() as pgp:
3285
 
        for client_name, client in clients_data.items():
3286
 
            # Skip removed clients
3287
 
            if client_name not in client_settings:
3288
 
                continue
3289
 
 
 
2219
    
 
2220
    with Crypto() as crypt:
 
2221
        for client in clients_data:
 
2222
            client_name = client["name"]
 
2223
            
3290
2224
            # Decide which value to use after restoring saved state.
3291
2225
            # We have three different values: Old config file,
3292
2226
            # new config file, and saved state.
3297
2231
                    # For each value in new config, check if it
3298
2232
                    # differs from the old config value (Except for
3299
2233
                    # the "secret" attribute)
3300
 
                    if (name != "secret"
3301
 
                        and (value !=
3302
 
                             old_client_settings[client_name][name])):
3303
 
                        client[name] = value
 
2234
                    if (name != "secret" and
 
2235
                        value != old_client_settings[client_name]
 
2236
                        [name]):
 
2237
                        setattr(client, name, value)
3304
2238
                except KeyError:
3305
2239
                    pass
3306
 
 
 
2240
            
3307
2241
            # Clients who has passed its expire date can still be
3308
 
            # enabled if its last checker was successful.  A Client
3309
 
            # whose checker succeeded before we stored its state is
3310
 
            # assumed to have successfully run all checkers during
3311
 
            # downtime.
3312
 
            if client["enabled"]:
3313
 
                if datetime.datetime.utcnow() >= client["expires"]:
3314
 
                    if not client["last_checked_ok"]:
3315
 
                        logger.warning(
3316
 
                            "disabling client {} - Client never "
3317
 
                            "performed a successful checker".format(
3318
 
                                client_name))
3319
 
                        client["enabled"] = False
3320
 
                    elif client["last_checker_status"] != 0:
3321
 
                        logger.warning(
3322
 
                            "disabling client {} - Client last"
3323
 
                            " checker failed with error code"
3324
 
                            " {}".format(
3325
 
                                client_name,
3326
 
                                client["last_checker_status"]))
 
2242
            # enabled if its last checker was sucessful.  Clients
 
2243
            # whose checker failed before we stored its state is
 
2244
            # assumed to have failed all checkers during downtime.
 
2245
            if client["enabled"] and client["last_checked_ok"]:
 
2246
                if ((datetime.datetime.utcnow()
 
2247
                     - client["last_checked_ok"])
 
2248
                    > client["interval"]):
 
2249
                    if client["last_checker_status"] != 0:
3327
2250
                        client["enabled"] = False
3328
2251
                    else:
3329
 
                        client["expires"] = (
3330
 
                            datetime.datetime.utcnow()
3331
 
                            + client["timeout"])
3332
 
                        logger.debug("Last checker succeeded,"
3333
 
                                     " keeping {} enabled".format(
3334
 
                                         client_name))
 
2252
                        client["expires"] = (datetime.datetime
 
2253
                                             .utcnow()
 
2254
                                             + client["timeout"])
 
2255
            
 
2256
            client["changedstate"] = (multiprocessing_manager
 
2257
                                      .Condition
 
2258
                                      (multiprocessing_manager
 
2259
                                       .Lock()))
 
2260
            if use_dbus:
 
2261
                new_client = (ClientDBusTransitional.__new__
 
2262
                              (ClientDBusTransitional))
 
2263
                tcp_server.clients[client_name] = new_client
 
2264
                new_client.bus = bus
 
2265
                for name, value in client.iteritems():
 
2266
                    setattr(new_client, name, value)
 
2267
                client_object_name = unicode(client_name).translate(
 
2268
                    {ord("."): ord("_"),
 
2269
                     ord("-"): ord("_")})
 
2270
                new_client.dbus_object_path = (dbus.ObjectPath
 
2271
                                               ("/clients/"
 
2272
                                                + client_object_name))
 
2273
                DBusObjectWithProperties.__init__(new_client,
 
2274
                                                  new_client.bus,
 
2275
                                                  new_client
 
2276
                                                  .dbus_object_path)
 
2277
            else:
 
2278
                tcp_server.clients[client_name] = (Client.__new__
 
2279
                                                   (Client))
 
2280
                for name, value in client.iteritems():
 
2281
                    setattr(tcp_server.clients[client_name],
 
2282
                            name, value)
 
2283
            
3335
2284
            try:
3336
 
                client["secret"] = pgp.decrypt(
3337
 
                    client["encrypted_secret"],
 
2285
                tcp_server.clients[client_name].secret = (
 
2286
                    crypt.decrypt(tcp_server.clients[client_name]
 
2287
                                  .encrypted_secret,
 
2288
                                  client_settings[client_name]
 
2289
                                  ["secret"]))
 
2290
            except CryptoError:
 
2291
                # If decryption fails, we use secret from new settings
 
2292
                tcp_server.clients[client_name].secret = (
3338
2293
                    client_settings[client_name]["secret"])
3339
 
            except PGPError:
3340
 
                # If decryption fails, we use secret from new settings
3341
 
                logger.debug("Failed to decrypt {} old secret".format(
3342
 
                    client_name))
3343
 
                client["secret"] = (client_settings[client_name]
3344
 
                                    ["secret"])
3345
 
 
3346
 
    # Add/remove clients based on new changes made to config
3347
 
    for client_name in (set(old_client_settings)
3348
 
                        - set(client_settings)):
3349
 
        del clients_data[client_name]
3350
 
    for client_name in (set(client_settings)
3351
 
                        - set(old_client_settings)):
3352
 
        clients_data[client_name] = client_settings[client_name]
3353
 
 
3354
 
    # Create all client objects
3355
 
    for client_name, client in clients_data.items():
3356
 
        tcp_server.clients[client_name] = client_class(
3357
 
            name=client_name,
3358
 
            settings=client,
3359
 
            server_settings=server_settings)
3360
 
 
 
2294
    
 
2295
    # Create/remove clients based on new changes made to config
 
2296
    for clientname in set(old_client_settings) - set(client_settings):
 
2297
        del tcp_server.clients[clientname]
 
2298
    for clientname in set(client_settings) - set(old_client_settings):
 
2299
        tcp_server.clients[clientname] = (client_class(name
 
2300
                                                       = clientname,
 
2301
                                                       config =
 
2302
                                                       client_settings
 
2303
                                                       [clientname]))
 
2304
    
3361
2305
    if not tcp_server.clients:
3362
2306
        logger.warning("No clients defined")
3363
 
 
3364
 
    if not foreground:
3365
 
        if pidfile is not None:
3366
 
            pid = os.getpid()
3367
 
            try:
3368
 
                with pidfile:
3369
 
                    print(pid, file=pidfile)
3370
 
            except IOError:
3371
 
                logger.error("Could not write to file %r with PID %d",
3372
 
                             pidfilename, pid)
3373
 
        del pidfile
 
2307
        
 
2308
    if not debug:
 
2309
        try:
 
2310
            with pidfile:
 
2311
                pid = os.getpid()
 
2312
                pidfile.write(str(pid) + "\n".encode("utf-8"))
 
2313
            del pidfile
 
2314
        except IOError:
 
2315
            logger.error("Could not write to file %r with PID %d",
 
2316
                         pidfilename, pid)
 
2317
        except NameError:
 
2318
            # "pidfile" was never created
 
2319
            pass
3374
2320
        del pidfilename
3375
 
 
3376
 
    for termsig in (signal.SIGHUP, signal.SIGTERM):
3377
 
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3378
 
                             lambda: main_loop.quit() and False)
3379
 
 
 
2321
        
 
2322
        signal.signal(signal.SIGINT, signal.SIG_IGN)
 
2323
    
 
2324
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
2325
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
 
2326
    
3380
2327
    if use_dbus:
3381
 
 
3382
 
        @alternate_dbus_interfaces(
3383
 
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
 
        class MandosDBusService(DBusObjectWithObjectManager):
 
2328
        class MandosDBusService(dbus.service.Object):
3385
2329
            """A D-Bus proxy object"""
3386
 
 
3387
2330
            def __init__(self):
3388
2331
                dbus.service.Object.__init__(self, bus, "/")
3389
 
 
3390
2332
            _interface = "se.recompile.Mandos"
3391
 
 
 
2333
            
3392
2334
            @dbus.service.signal(_interface, signature="o")
3393
2335
            def ClientAdded(self, objpath):
3394
2336
                "D-Bus signal"
3395
2337
                pass
3396
 
 
 
2338
            
3397
2339
            @dbus.service.signal(_interface, signature="ss")
3398
 
            def ClientNotFound(self, key_id, address):
 
2340
            def ClientNotFound(self, fingerprint, address):
3399
2341
                "D-Bus signal"
3400
2342
                pass
3401
 
 
3402
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
 
                               "true"})
 
2343
            
3404
2344
            @dbus.service.signal(_interface, signature="os")
3405
2345
            def ClientRemoved(self, objpath, name):
3406
2346
                "D-Bus signal"
3407
2347
                pass
3408
 
 
3409
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
 
                               "true"})
 
2348
            
3411
2349
            @dbus.service.method(_interface, out_signature="ao")
3412
2350
            def GetAllClients(self):
3413
2351
                "D-Bus method"
3414
 
                return dbus.Array(c.dbus_object_path for c in
3415
 
                                  tcp_server.clients.values())
3416
 
 
3417
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
 
                               "true"})
 
2352
                return dbus.Array(c.dbus_object_path
 
2353
                                  for c in
 
2354
                                  tcp_server.clients.itervalues())
 
2355
            
3419
2356
            @dbus.service.method(_interface,
3420
2357
                                 out_signature="a{oa{sv}}")
3421
2358
            def GetAllClientsWithProperties(self):
3422
2359
                "D-Bus method"
3423
2360
                return dbus.Dictionary(
3424
 
                    {c.dbus_object_path: c.GetAll(
3425
 
                        "se.recompile.Mandos.Client")
3426
 
                     for c in tcp_server.clients.values()},
 
2361
                    ((c.dbus_object_path, c.GetAll(""))
 
2362
                     for c in tcp_server.clients.itervalues()),
3427
2363
                    signature="oa{sv}")
3428
 
 
 
2364
            
3429
2365
            @dbus.service.method(_interface, in_signature="o")
3430
2366
            def RemoveClient(self, object_path):
3431
2367
                "D-Bus method"
3432
 
                for c in tcp_server.clients.values():
 
2368
                for c in tcp_server.clients.itervalues():
3433
2369
                    if c.dbus_object_path == object_path:
3434
2370
                        del tcp_server.clients[c.name]
3435
2371
                        c.remove_from_connection()
3436
 
                        # Don't signal the disabling
 
2372
                        # Don't signal anything except ClientRemoved
3437
2373
                        c.disable(quiet=True)
3438
 
                        # Emit D-Bus signal for removal
3439
 
                        self.client_removed_signal(c)
 
2374
                        # Emit D-Bus signal
 
2375
                        self.ClientRemoved(object_path, c.name)
3440
2376
                        return
3441
2377
                raise KeyError(object_path)
3442
 
 
 
2378
            
3443
2379
            del _interface
3444
 
 
3445
 
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3446
 
                                 out_signature="a{oa{sa{sv}}}")
3447
 
            def GetManagedObjects(self):
3448
 
                """D-Bus method"""
3449
 
                return dbus.Dictionary(
3450
 
                    {client.dbus_object_path:
3451
 
                     dbus.Dictionary(
3452
 
                         {interface: client.GetAll(interface)
3453
 
                          for interface in
3454
 
                          client._get_all_interface_names()})
3455
 
                     for client in tcp_server.clients.values()})
3456
 
 
3457
 
            def client_added_signal(self, client):
3458
 
                """Send the new standard signal and the old signal"""
3459
 
                if use_dbus:
3460
 
                    # New standard signal
3461
 
                    self.InterfacesAdded(
3462
 
                        client.dbus_object_path,
3463
 
                        dbus.Dictionary(
3464
 
                            {interface: client.GetAll(interface)
3465
 
                             for interface in
3466
 
                             client._get_all_interface_names()}))
3467
 
                    # Old signal
3468
 
                    self.ClientAdded(client.dbus_object_path)
3469
 
 
3470
 
            def client_removed_signal(self, client):
3471
 
                """Send the new standard signal and the old signal"""
3472
 
                if use_dbus:
3473
 
                    # New standard signal
3474
 
                    self.InterfacesRemoved(
3475
 
                        client.dbus_object_path,
3476
 
                        client._get_all_interface_names())
3477
 
                    # Old signal
3478
 
                    self.ClientRemoved(client.dbus_object_path,
3479
 
                                       client.name)
3480
 
 
3481
 
        mandos_dbus_service = MandosDBusService()
3482
 
 
3483
 
    # Save modules to variables to exempt the modules from being
3484
 
    # unloaded before the function registered with atexit() is run.
3485
 
    mp = multiprocessing
3486
 
    wn = wnull
3487
 
 
 
2380
        
 
2381
        class MandosDBusServiceTransitional(MandosDBusService):
 
2382
            __metaclass__ = AlternateDBusNamesMetaclass
 
2383
        mandos_dbus_service = MandosDBusServiceTransitional()
 
2384
    
3488
2385
    def cleanup():
3489
2386
        "Cleanup function; run on exit"
3490
 
        if zeroconf:
3491
 
            service.cleanup()
3492
 
 
3493
 
        mp.active_children()
3494
 
        wn.close()
 
2387
        service.cleanup()
 
2388
        
 
2389
        multiprocessing.active_children()
3495
2390
        if not (tcp_server.clients or client_settings):
3496
2391
            return
3497
 
 
 
2392
        
3498
2393
        # Store client before exiting. Secrets are encrypted with key
3499
2394
        # based on what config file has. If config file is
3500
2395
        # removed/edited, old secret will thus be unrecovable.
3501
 
        clients = {}
3502
 
        with PGPEngine() as pgp:
3503
 
            for client in tcp_server.clients.values():
 
2396
        clients = []
 
2397
        with Crypto() as crypt:
 
2398
            for client in tcp_server.clients.itervalues():
3504
2399
                key = client_settings[client.name]["secret"]
3505
 
                client.encrypted_secret = pgp.encrypt(client.secret,
3506
 
                                                      key)
 
2400
                client.encrypted_secret = crypt.encrypt(client.secret,
 
2401
                                                        key)
3507
2402
                client_dict = {}
3508
 
 
3509
 
                # A list of attributes that can not be pickled
3510
 
                # + secret.
3511
 
                exclude = {"bus", "changedstate", "secret",
3512
 
                           "checker", "server_settings"}
3513
 
                for name, typ in inspect.getmembers(dbus.service
3514
 
                                                    .Object):
 
2403
                
 
2404
                # A list of attributes that will not be stored when
 
2405
                # shutting down.
 
2406
                exclude = set(("bus", "changedstate", "secret"))
 
2407
                for name, typ in (inspect.getmembers
 
2408
                                  (dbus.service.Object)):
3515
2409
                    exclude.add(name)
3516
 
 
 
2410
                
3517
2411
                client_dict["encrypted_secret"] = (client
3518
2412
                                                   .encrypted_secret)
3519
2413
                for attr in client.client_structure:
3520
2414
                    if attr not in exclude:
3521
2415
                        client_dict[attr] = getattr(client, attr)
3522
 
 
3523
 
                clients[client.name] = client_dict
 
2416
                
 
2417
                clients.append(client_dict)
3524
2418
                del client_settings[client.name]["secret"]
3525
 
 
 
2419
        
3526
2420
        try:
3527
 
            with tempfile.NamedTemporaryFile(
3528
 
                    mode='wb',
3529
 
                    suffix=".pickle",
3530
 
                    prefix='clients-',
3531
 
                    dir=os.path.dirname(stored_state_path),
3532
 
                    delete=False) as stored_state:
3533
 
                pickle.dump((clients, client_settings), stored_state,
3534
 
                            protocol=2)
3535
 
                tempname = stored_state.name
3536
 
            os.rename(tempname, stored_state_path)
 
2421
            with os.fdopen(os.open(stored_state_path,
 
2422
                                   os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
 
2423
                                   0600), "wb") as stored_state:
 
2424
                pickle.dump((clients, client_settings), stored_state)
3537
2425
        except (IOError, OSError) as e:
3538
 
            if not debug:
3539
 
                try:
3540
 
                    os.remove(tempname)
3541
 
                except NameError:
3542
 
                    pass
3543
 
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3544
 
                logger.warning("Could not save persistent state: {}"
3545
 
                               .format(os.strerror(e.errno)))
3546
 
            else:
3547
 
                logger.warning("Could not save persistent state:",
3548
 
                               exc_info=e)
 
2426
            logger.warning("Could not save persistent state: {0}"
 
2427
                           .format(e))
 
2428
            if e.errno not in (errno.ENOENT, errno.EACCES):
3549
2429
                raise
3550
 
 
 
2430
        
3551
2431
        # Delete all clients, and settings from config
3552
2432
        while tcp_server.clients:
3553
2433
            name, client = tcp_server.clients.popitem()
3554
2434
            if use_dbus:
3555
2435
                client.remove_from_connection()
3556
 
            # Don't signal the disabling
 
2436
            # Don't signal anything except ClientRemoved
3557
2437
            client.disable(quiet=True)
3558
 
            # Emit D-Bus signal for removal
3559
2438
            if use_dbus:
3560
 
                mandos_dbus_service.client_removed_signal(client)
 
2439
                # Emit D-Bus signal
 
2440
                mandos_dbus_service.ClientRemoved(client
 
2441
                                                  .dbus_object_path,
 
2442
                                                  client.name)
3561
2443
        client_settings.clear()
3562
 
 
 
2444
    
3563
2445
    atexit.register(cleanup)
3564
 
 
3565
 
    for client in tcp_server.clients.values():
 
2446
    
 
2447
    for client in tcp_server.clients.itervalues():
3566
2448
        if use_dbus:
3567
 
            # Emit D-Bus signal for adding
3568
 
            mandos_dbus_service.client_added_signal(client)
 
2449
            # Emit D-Bus signal
 
2450
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
3569
2451
        # Need to initiate checking of clients
3570
2452
        if client.enabled:
3571
2453
            client.init_checker()
3572
 
 
 
2454
    
3573
2455
    tcp_server.enable()
3574
2456
    tcp_server.server_activate()
3575
 
 
 
2457
    
3576
2458
    # Find out what port we got
3577
 
    if zeroconf:
3578
 
        service.port = tcp_server.socket.getsockname()[1]
 
2459
    service.port = tcp_server.socket.getsockname()[1]
3579
2460
    if use_ipv6:
3580
2461
        logger.info("Now listening on address %r, port %d,"
3581
 
                    " flowinfo %d, scope_id %d",
3582
 
                    *tcp_server.socket.getsockname())
 
2462
                    " flowinfo %d, scope_id %d"
 
2463
                    % tcp_server.socket.getsockname())
3583
2464
    else:                       # IPv4
3584
 
        logger.info("Now listening on address %r, port %d",
3585
 
                    *tcp_server.socket.getsockname())
3586
 
 
3587
 
    # service.interface = tcp_server.socket.getsockname()[3]
3588
 
 
 
2465
        logger.info("Now listening on address %r, port %d"
 
2466
                    % tcp_server.socket.getsockname())
 
2467
    
 
2468
    #service.interface = tcp_server.socket.getsockname()[3]
 
2469
    
3589
2470
    try:
3590
 
        if zeroconf:
3591
 
            # From the Avahi example code
3592
 
            try:
3593
 
                service.activate()
3594
 
            except dbus.exceptions.DBusException as error:
3595
 
                logger.critical("D-Bus Exception", exc_info=error)
3596
 
                cleanup()
3597
 
                sys.exit(1)
3598
 
            # End of Avahi example code
3599
 
 
3600
 
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3601
 
                          lambda *args, **kwargs:
3602
 
                          (tcp_server.handle_request
3603
 
                           (*args[2:], **kwargs) or True))
3604
 
 
 
2471
        # From the Avahi example code
 
2472
        try:
 
2473
            service.activate()
 
2474
        except dbus.exceptions.DBusException as error:
 
2475
            logger.critical("DBusException: %s", error)
 
2476
            cleanup()
 
2477
            sys.exit(1)
 
2478
        # End of Avahi example code
 
2479
        
 
2480
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
2481
                             lambda *args, **kwargs:
 
2482
                             (tcp_server.handle_request
 
2483
                              (*args[2:], **kwargs) or True))
 
2484
        
3605
2485
        logger.debug("Starting main loop")
3606
2486
        main_loop.run()
3607
2487
    except AvahiError as error:
3608
 
        logger.critical("Avahi Error", exc_info=error)
 
2488
        logger.critical("AvahiError: %s", error)
3609
2489
        cleanup()
3610
2490
        sys.exit(1)
3611
2491
    except KeyboardInterrupt: