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  • Committer: Teddy Hogeborn
  • Date: 2011-09-26 19:36:18 UTC
  • mfrom: (24.1.184 mandos)
  • Revision ID: teddy@fukt.bsnet.se-20110926193618-vtj5c9hena1maixx
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1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
 
3
4
4
# Mandos server - give out binary blobs to connecting clients.
5
 
#
 
5
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>.  This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
 
#
 
12
13
13
# Everything else is
14
 
# Copyright © 2008-2018 Teddy Hogeborn
15
 
# Copyright © 2008-2018 Björn Påhlsson
16
 
#
17
 
# This file is part of Mandos.
18
 
#
19
 
# Mandos is free software: you can redistribute it and/or modify it
20
 
# under the terms of the GNU General Public License as published by
 
14
# Copyright © 2008-2011 Teddy Hogeborn
 
15
# Copyright © 2008-2011 Björn Påhlsson
 
16
 
17
# This program is free software: you can redistribute it and/or modify
 
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
 
#     Mandos is distributed in the hope that it will be useful, but
25
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
 
22
#     This program is distributed in the hope that it will be useful,
 
23
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
27
25
#     GNU General Public License for more details.
28
 
#
 
26
29
27
# You should have received a copy of the GNU General Public License
30
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
31
 
#
32
 
# Contact the authors at <mandos@recompile.se>.
33
 
#
 
28
# along with this program.  If not, see
 
29
# <http://www.gnu.org/licenses/>.
 
30
 
31
# Contact the authors at <mandos@fukt.bsnet.se>.
 
32
34
33
 
35
34
from __future__ import (division, absolute_import, print_function,
36
35
                        unicode_literals)
37
36
 
38
 
try:
39
 
    from future_builtins import *
40
 
except ImportError:
41
 
    pass
42
 
 
43
 
try:
44
 
    import SocketServer as socketserver
45
 
except ImportError:
46
 
    import socketserver
 
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
 
try:
52
 
    import ConfigParser as configparser
53
 
except ImportError:
54
 
    import configparser
 
42
import gnutls.crypto
 
43
import gnutls.connection
 
44
import gnutls.errors
 
45
import gnutls.library.functions
 
46
import gnutls.library.constants
 
47
import gnutls.library.types
 
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
 
try:
70
 
    import cPickle as pickle
71
 
except ImportError:
72
 
    import pickle
 
63
import cPickle as pickle
73
64
import multiprocessing
74
 
import types
75
 
import binascii
76
 
import tempfile
77
 
import itertools
78
 
import collections
79
 
import codecs
80
65
 
81
66
import dbus
82
67
import dbus.service
83
 
from gi.repository import GLib
 
68
import gobject
 
69
import avahi
84
70
from dbus.mainloop.glib import DBusGMainLoop
85
71
import ctypes
86
72
import ctypes.util
87
73
import xml.dom.minidom
88
74
import inspect
89
75
 
90
 
# Try to find the value of SO_BINDTODEVICE:
91
76
try:
92
 
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
 
    # newer, and it is also the most natural place for it:
94
77
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
78
except AttributeError:
96
79
    try:
97
 
        # This is where SO_BINDTODEVICE was up to and including Python
98
 
        # 2.6, and also 3.2:
99
80
        from IN import SO_BINDTODEVICE
100
81
    except ImportError:
101
 
        # In Python 2.7 it seems to have been removed entirely.
102
 
        # Try running the C preprocessor:
103
 
        try:
104
 
            cc = subprocess.Popen(["cc", "--language=c", "-E",
105
 
                                   "/dev/stdin"],
106
 
                                  stdin=subprocess.PIPE,
107
 
                                  stdout=subprocess.PIPE)
108
 
            stdout = cc.communicate(
109
 
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
 
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
 
        except (OSError, ValueError, IndexError):
112
 
            # No value found
113
 
            SO_BINDTODEVICE = None
114
 
 
115
 
if sys.version_info.major == 2:
116
 
    str = unicode
117
 
 
118
 
version = "1.7.20"
119
 
stored_state_file = "clients.pickle"
120
 
 
121
 
logger = logging.getLogger()
122
 
syslogger = None
123
 
 
124
 
try:
125
 
    if_nametoindex = ctypes.cdll.LoadLibrary(
126
 
        ctypes.util.find_library("c")).if_nametoindex
127
 
except (OSError, AttributeError):
128
 
 
129
 
    def if_nametoindex(interface):
130
 
        "Get an interface index the hard way, i.e. using fcntl()"
131
 
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
132
 
        with contextlib.closing(socket.socket()) as s:
133
 
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
 
                                struct.pack(b"16s16x", interface))
135
 
        interface_index = struct.unpack("I", ifreq[16:20])[0]
136
 
        return interface_index
137
 
 
138
 
 
139
 
def copy_function(func):
140
 
    """Make a copy of a function"""
141
 
    if sys.version_info.major == 2:
142
 
        return types.FunctionType(func.func_code,
143
 
                                  func.func_globals,
144
 
                                  func.func_name,
145
 
                                  func.func_defaults,
146
 
                                  func.func_closure)
147
 
    else:
148
 
        return types.FunctionType(func.__code__,
149
 
                                  func.__globals__,
150
 
                                  func.__name__,
151
 
                                  func.__defaults__,
152
 
                                  func.__closure__)
153
 
 
154
 
 
155
 
def initlogger(debug, level=logging.WARNING):
156
 
    """init logger and add loglevel"""
157
 
 
158
 
    global syslogger
159
 
    syslogger = (logging.handlers.SysLogHandler(
160
 
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
 
        address="/dev/log"))
162
 
    syslogger.setFormatter(logging.Formatter
163
 
                           ('Mandos [%(process)d]: %(levelname)s:'
164
 
                            ' %(message)s'))
165
 
    logger.addHandler(syslogger)
166
 
 
167
 
    if debug:
168
 
        console = logging.StreamHandler()
169
 
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
 
                                               ' [%(process)d]:'
171
 
                                               ' %(levelname)s:'
172
 
                                               ' %(message)s'))
173
 
        logger.addHandler(console)
174
 
    logger.setLevel(level)
175
 
 
176
 
 
177
 
class PGPError(Exception):
178
 
    """Exception if encryption/decryption fails"""
179
 
    pass
180
 
 
181
 
 
182
 
class PGPEngine(object):
183
 
    """A simple class for OpenPGP symmetric encryption & decryption"""
184
 
 
185
 
    def __init__(self):
186
 
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
 
        self.gpg = "gpg"
188
 
        try:
189
 
            output = subprocess.check_output(["gpgconf"])
190
 
            for line in output.splitlines():
191
 
                name, text, path = line.split(b":")
192
 
                if name == "gpg":
193
 
                    self.gpg = path
194
 
                    break
195
 
        except OSError as e:
196
 
            if e.errno != errno.ENOENT:
197
 
                raise
198
 
        self.gnupgargs = ['--batch',
199
 
                          '--homedir', self.tempdir,
200
 
                          '--force-mdc',
201
 
                          '--quiet']
202
 
        # Only GPG version 1 has the --no-use-agent option.
203
 
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
 
            self.gnupgargs.append("--no-use-agent")
205
 
 
206
 
    def __enter__(self):
207
 
        return self
208
 
 
209
 
    def __exit__(self, exc_type, exc_value, traceback):
210
 
        self._cleanup()
211
 
        return False
212
 
 
213
 
    def __del__(self):
214
 
        self._cleanup()
215
 
 
216
 
    def _cleanup(self):
217
 
        if self.tempdir is not None:
218
 
            # Delete contents of tempdir
219
 
            for root, dirs, files in os.walk(self.tempdir,
220
 
                                             topdown=False):
221
 
                for filename in files:
222
 
                    os.remove(os.path.join(root, filename))
223
 
                for dirname in dirs:
224
 
                    os.rmdir(os.path.join(root, dirname))
225
 
            # Remove tempdir
226
 
            os.rmdir(self.tempdir)
227
 
            self.tempdir = None
228
 
 
229
 
    def password_encode(self, password):
230
 
        # Passphrase can not be empty and can not contain newlines or
231
 
        # NUL bytes.  So we prefix it and hex encode it.
232
 
        encoded = b"mandos" + binascii.hexlify(password)
233
 
        if len(encoded) > 2048:
234
 
            # GnuPG can't handle long passwords, so encode differently
235
 
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
 
                       .replace(b"\n", b"\\n")
237
 
                       .replace(b"\0", b"\\x00"))
238
 
        return encoded
239
 
 
240
 
    def encrypt(self, data, password):
241
 
        passphrase = self.password_encode(password)
242
 
        with tempfile.NamedTemporaryFile(
243
 
                dir=self.tempdir) as passfile:
244
 
            passfile.write(passphrase)
245
 
            passfile.flush()
246
 
            proc = subprocess.Popen([self.gpg, '--symmetric',
247
 
                                     '--passphrase-file',
248
 
                                     passfile.name]
249
 
                                    + self.gnupgargs,
250
 
                                    stdin=subprocess.PIPE,
251
 
                                    stdout=subprocess.PIPE,
252
 
                                    stderr=subprocess.PIPE)
253
 
            ciphertext, err = proc.communicate(input=data)
254
 
        if proc.returncode != 0:
255
 
            raise PGPError(err)
256
 
        return ciphertext
257
 
 
258
 
    def decrypt(self, data, password):
259
 
        passphrase = self.password_encode(password)
260
 
        with tempfile.NamedTemporaryFile(
261
 
                dir=self.tempdir) as passfile:
262
 
            passfile.write(passphrase)
263
 
            passfile.flush()
264
 
            proc = subprocess.Popen([self.gpg, '--decrypt',
265
 
                                     '--passphrase-file',
266
 
                                     passfile.name]
267
 
                                    + self.gnupgargs,
268
 
                                    stdin=subprocess.PIPE,
269
 
                                    stdout=subprocess.PIPE,
270
 
                                    stderr=subprocess.PIPE)
271
 
            decrypted_plaintext, err = proc.communicate(input=data)
272
 
        if proc.returncode != 0:
273
 
            raise PGPError(err)
274
 
        return decrypted_plaintext
275
 
 
276
 
 
277
 
# Pretend that we have an Avahi module
278
 
class Avahi(object):
279
 
    """This isn't so much a class as it is a module-like namespace.
280
 
    It is instantiated once, and simulates having an Avahi module."""
281
 
    IF_UNSPEC = -1               # avahi-common/address.h
282
 
    PROTO_UNSPEC = -1            # avahi-common/address.h
283
 
    PROTO_INET = 0               # avahi-common/address.h
284
 
    PROTO_INET6 = 1              # avahi-common/address.h
285
 
    DBUS_NAME = "org.freedesktop.Avahi"
286
 
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
 
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
 
    DBUS_PATH_SERVER = "/"
289
 
 
290
 
    def string_array_to_txt_array(self, t):
291
 
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
 
                           for s in t), signature="ay")
293
 
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
294
 
    ENTRY_GROUP_COLLISION = 3    # avahi-common/defs.h
295
 
    ENTRY_GROUP_FAILURE = 4      # avahi-common/defs.h
296
 
    SERVER_INVALID = 0           # avahi-common/defs.h
297
 
    SERVER_REGISTERING = 1       # avahi-common/defs.h
298
 
    SERVER_RUNNING = 2           # avahi-common/defs.h
299
 
    SERVER_COLLISION = 3         # avahi-common/defs.h
300
 
    SERVER_FAILURE = 4           # avahi-common/defs.h
301
 
avahi = Avahi()
302
 
 
 
82
        SO_BINDTODEVICE = None
 
83
 
 
84
 
 
85
version = "1.3.1"
 
86
 
 
87
#logger = logging.getLogger('mandos')
 
88
logger = logging.Logger('mandos')
 
89
syslogger = (logging.handlers.SysLogHandler
 
90
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
91
              address = str("/dev/log")))
 
92
syslogger.setFormatter(logging.Formatter
 
93
                       ('Mandos [%(process)d]: %(levelname)s:'
 
94
                        ' %(message)s'))
 
95
logger.addHandler(syslogger)
 
96
 
 
97
console = logging.StreamHandler()
 
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
 
99
                                       ' %(levelname)s:'
 
100
                                       ' %(message)s'))
 
101
logger.addHandler(console)
303
102
 
304
103
class AvahiError(Exception):
305
104
    def __init__(self, value, *args, **kwargs):
306
105
        self.value = value
307
 
        return super(AvahiError, self).__init__(value, *args,
308
 
                                                **kwargs)
309
 
 
 
106
        super(AvahiError, self).__init__(value, *args, **kwargs)
 
107
    def __unicode__(self):
 
108
        return unicode(repr(self.value))
310
109
 
311
110
class AvahiServiceError(AvahiError):
312
111
    pass
313
112
 
314
 
 
315
113
class AvahiGroupError(AvahiError):
316
114
    pass
317
115
 
318
116
 
319
117
class AvahiService(object):
320
118
    """An Avahi (Zeroconf) service.
321
 
 
 
119
    
322
120
    Attributes:
323
121
    interface: integer; avahi.IF_UNSPEC or an interface index.
324
122
               Used to optionally bind to the specified interface.
325
123
    name: string; Example: 'Mandos'
326
124
    type: string; Example: '_mandos._tcp'.
327
 
     See <https://www.iana.org/assignments/service-names-port-numbers>
 
125
                  See <http://www.dns-sd.org/ServiceTypes.html>
328
126
    port: integer; what port to announce
329
127
    TXT: list of strings; TXT record for the service
330
128
    domain: string; Domain to publish on, default to .local if empty.
336
134
    server: D-Bus Server
337
135
    bus: dbus.SystemBus()
338
136
    """
339
 
 
340
 
    def __init__(self,
341
 
                 interface=avahi.IF_UNSPEC,
342
 
                 name=None,
343
 
                 servicetype=None,
344
 
                 port=None,
345
 
                 TXT=None,
346
 
                 domain="",
347
 
                 host="",
348
 
                 max_renames=32768,
349
 
                 protocol=avahi.PROTO_UNSPEC,
350
 
                 bus=None):
 
137
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
 
138
                 servicetype = None, port = None, TXT = None,
 
139
                 domain = "", host = "", max_renames = 32768,
 
140
                 protocol = avahi.PROTO_UNSPEC, bus = None):
351
141
        self.interface = interface
352
142
        self.name = name
353
143
        self.type = servicetype
362
152
        self.server = None
363
153
        self.bus = bus
364
154
        self.entry_group_state_changed_match = None
365
 
 
366
 
    def rename(self, remove=True):
 
155
    def rename(self):
367
156
        """Derived from the Avahi example code"""
368
157
        if self.rename_count >= self.max_renames:
369
158
            logger.critical("No suitable Zeroconf service name found"
370
159
                            " after %i retries, exiting.",
371
160
                            self.rename_count)
372
161
            raise AvahiServiceError("Too many renames")
373
 
        self.name = str(
374
 
            self.server.GetAlternativeServiceName(self.name))
375
 
        self.rename_count += 1
 
162
        self.name = unicode(self.server.GetAlternativeServiceName(self.name))
376
163
        logger.info("Changing Zeroconf service name to %r ...",
377
164
                    self.name)
378
 
        if remove:
379
 
            self.remove()
 
165
        syslogger.setFormatter(logging.Formatter
 
166
                               ('Mandos (%s) [%%(process)d]:'
 
167
                                ' %%(levelname)s: %%(message)s'
 
168
                                % self.name))
 
169
        self.remove()
380
170
        try:
381
171
            self.add()
382
172
        except dbus.exceptions.DBusException as error:
383
 
            if (error.get_dbus_name()
384
 
                == "org.freedesktop.Avahi.CollisionError"):
385
 
                logger.info("Local Zeroconf service name collision.")
386
 
                return self.rename(remove=False)
387
 
            else:
388
 
                logger.critical("D-Bus Exception", exc_info=error)
389
 
                self.cleanup()
390
 
                os._exit(1)
391
 
 
 
173
            logger.critical("DBusException: %s", error)
 
174
            self.cleanup()
 
175
            os._exit(1)
 
176
        self.rename_count += 1
392
177
    def remove(self):
393
178
        """Derived from the Avahi example code"""
394
179
        if self.entry_group_state_changed_match is not None:
396
181
            self.entry_group_state_changed_match = None
397
182
        if self.group is not None:
398
183
            self.group.Reset()
399
 
 
400
184
    def add(self):
401
185
        """Derived from the Avahi example code"""
402
186
        self.remove()
407
191
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
408
192
        self.entry_group_state_changed_match = (
409
193
            self.group.connect_to_signal(
410
 
                'StateChanged', self.entry_group_state_changed))
 
194
                'StateChanged', self .entry_group_state_changed))
411
195
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
412
196
                     self.name, self.type)
413
197
        self.group.AddService(
419
203
            dbus.UInt16(self.port),
420
204
            avahi.string_array_to_txt_array(self.TXT))
421
205
        self.group.Commit()
422
 
 
423
206
    def entry_group_state_changed(self, state, error):
424
207
        """Derived from the Avahi example code"""
425
208
        logger.debug("Avahi entry group state change: %i", state)
426
 
 
 
209
        
427
210
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
211
            logger.debug("Zeroconf service established.")
429
212
        elif state == avahi.ENTRY_GROUP_COLLISION:
431
214
            self.rename()
432
215
        elif state == avahi.ENTRY_GROUP_FAILURE:
433
216
            logger.critical("Avahi: Error in group state changed %s",
434
 
                            str(error))
435
 
            raise AvahiGroupError("State changed: {!s}".format(error))
436
 
 
 
217
                            unicode(error))
 
218
            raise AvahiGroupError("State changed: %s"
 
219
                                  % unicode(error))
437
220
    def cleanup(self):
438
221
        """Derived from the Avahi example code"""
439
222
        if self.group is not None:
440
223
            try:
441
224
                self.group.Free()
442
225
            except (dbus.exceptions.UnknownMethodException,
443
 
                    dbus.exceptions.DBusException):
 
226
                    dbus.exceptions.DBusException) as e:
444
227
                pass
445
228
            self.group = None
446
229
        self.remove()
447
 
 
448
230
    def server_state_changed(self, state, error=None):
449
231
        """Derived from the Avahi example code"""
450
232
        logger.debug("Avahi server state change: %i", state)
451
 
        bad_states = {
452
 
            avahi.SERVER_INVALID: "Zeroconf server invalid",
453
 
            avahi.SERVER_REGISTERING: None,
454
 
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
 
            avahi.SERVER_FAILURE: "Zeroconf server failure",
456
 
        }
 
233
        bad_states = { avahi.SERVER_INVALID:
 
234
                           "Zeroconf server invalid",
 
235
                       avahi.SERVER_REGISTERING: None,
 
236
                       avahi.SERVER_COLLISION:
 
237
                           "Zeroconf server name collision",
 
238
                       avahi.SERVER_FAILURE:
 
239
                           "Zeroconf server failure" }
457
240
        if state in bad_states:
458
241
            if bad_states[state] is not None:
459
242
                if error is None:
462
245
                    logger.error(bad_states[state] + ": %r", error)
463
246
            self.cleanup()
464
247
        elif state == avahi.SERVER_RUNNING:
465
 
            try:
466
 
                self.add()
467
 
            except dbus.exceptions.DBusException as error:
468
 
                if (error.get_dbus_name()
469
 
                    == "org.freedesktop.Avahi.CollisionError"):
470
 
                    logger.info("Local Zeroconf service name"
471
 
                                " collision.")
472
 
                    return self.rename(remove=False)
473
 
                else:
474
 
                    logger.critical("D-Bus Exception", exc_info=error)
475
 
                    self.cleanup()
476
 
                    os._exit(1)
 
248
            self.add()
477
249
        else:
478
250
            if error is None:
479
251
                logger.debug("Unknown state: %r", state)
480
252
            else:
481
253
                logger.debug("Unknown state: %r: %r", state, error)
482
 
 
483
254
    def activate(self):
484
255
        """Derived from the Avahi example code"""
485
256
        if self.server is None:
489
260
                                    follow_name_owner_changes=True),
490
261
                avahi.DBUS_INTERFACE_SERVER)
491
262
        self.server.connect_to_signal("StateChanged",
492
 
                                      self.server_state_changed)
 
263
                                 self.server_state_changed)
493
264
        self.server_state_changed(self.server.GetState())
494
265
 
495
266
 
496
 
class AvahiServiceToSyslog(AvahiService):
497
 
    def rename(self, *args, **kwargs):
498
 
        """Add the new name to the syslog messages"""
499
 
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
 
        syslogger.setFormatter(logging.Formatter(
501
 
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
 
            .format(self.name)))
503
 
        return ret
504
 
 
505
 
 
506
 
# Pretend that we have a GnuTLS module
507
 
class GnuTLS(object):
508
 
    """This isn't so much a class as it is a module-like namespace.
509
 
    It is instantiated once, and simulates having a GnuTLS module."""
510
 
 
511
 
    library = ctypes.util.find_library("gnutls")
512
 
    if library is None:
513
 
        library = ctypes.util.find_library("gnutls-deb0")
514
 
    _library = ctypes.cdll.LoadLibrary(library)
515
 
    del library
516
 
    _need_version = b"3.3.0"
517
 
    _tls_rawpk_version = b"3.6.6"
518
 
 
519
 
    def __init__(self):
520
 
        # Need to use "self" here, since this method is called before
521
 
        # the assignment to the "gnutls" global variable happens.
522
 
        if self.check_version(self._need_version) is None:
523
 
            raise self.Error("Needs GnuTLS {} or later"
524
 
                             .format(self._need_version))
525
 
 
526
 
    # Unless otherwise indicated, the constants and types below are
527
 
    # all from the gnutls/gnutls.h C header file.
528
 
 
529
 
    # Constants
530
 
    E_SUCCESS = 0
531
 
    E_INTERRUPTED = -52
532
 
    E_AGAIN = -28
533
 
    CRT_OPENPGP = 2
534
 
    CRT_RAWPK = 3
535
 
    CLIENT = 2
536
 
    SHUT_RDWR = 0
537
 
    CRD_CERTIFICATE = 1
538
 
    E_NO_CERTIFICATE_FOUND = -49
539
 
    X509_FMT_DER = 0
540
 
    NO_TICKETS = 1<<10
541
 
    ENABLE_RAWPK = 1<<18
542
 
    CTYPE_PEERS = 3
543
 
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
544
 
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
545
 
 
546
 
    # Types
547
 
    class session_int(ctypes.Structure):
548
 
        _fields_ = []
549
 
    session_t = ctypes.POINTER(session_int)
550
 
 
551
 
    class certificate_credentials_st(ctypes.Structure):
552
 
        _fields_ = []
553
 
    certificate_credentials_t = ctypes.POINTER(
554
 
        certificate_credentials_st)
555
 
    certificate_type_t = ctypes.c_int
556
 
 
557
 
    class datum_t(ctypes.Structure):
558
 
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
 
                    ('size', ctypes.c_uint)]
560
 
 
561
 
    class openpgp_crt_int(ctypes.Structure):
562
 
        _fields_ = []
563
 
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
 
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
565
 
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
 
    credentials_type_t = ctypes.c_int
567
 
    transport_ptr_t = ctypes.c_void_p
568
 
    close_request_t = ctypes.c_int
569
 
 
570
 
    # Exceptions
571
 
    class Error(Exception):
572
 
        # We need to use the class name "GnuTLS" here, since this
573
 
        # exception might be raised from within GnuTLS.__init__,
574
 
        # which is called before the assignment to the "gnutls"
575
 
        # global variable has happened.
576
 
        def __init__(self, message=None, code=None, args=()):
577
 
            # Default usage is by a message string, but if a return
578
 
            # code is passed, convert it to a string with
579
 
            # gnutls.strerror()
580
 
            self.code = code
581
 
            if message is None and code is not None:
582
 
                message = GnuTLS.strerror(code)
583
 
            return super(GnuTLS.Error, self).__init__(
584
 
                message, *args)
585
 
 
586
 
    class CertificateSecurityError(Error):
587
 
        pass
588
 
 
589
 
    # Classes
590
 
    class Credentials(object):
591
 
        def __init__(self):
592
 
            self._c_object = gnutls.certificate_credentials_t()
593
 
            gnutls.certificate_allocate_credentials(
594
 
                ctypes.byref(self._c_object))
595
 
            self.type = gnutls.CRD_CERTIFICATE
596
 
 
597
 
        def __del__(self):
598
 
            gnutls.certificate_free_credentials(self._c_object)
599
 
 
600
 
    class ClientSession(object):
601
 
        def __init__(self, socket, credentials=None):
602
 
            self._c_object = gnutls.session_t()
603
 
            gnutls_flags = gnutls.CLIENT
604
 
            if gnutls.check_version("3.5.6"):
605
 
                gnutls_flags |= gnutls.NO_TICKETS
606
 
            if gnutls.has_rawpk:
607
 
                gnutls_flags |= gnutls.ENABLE_RAWPK
608
 
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
 
            del gnutls_flags
610
 
            gnutls.set_default_priority(self._c_object)
611
 
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
 
            gnutls.handshake_set_private_extensions(self._c_object,
613
 
                                                    True)
614
 
            self.socket = socket
615
 
            if credentials is None:
616
 
                credentials = gnutls.Credentials()
617
 
            gnutls.credentials_set(self._c_object, credentials.type,
618
 
                                   ctypes.cast(credentials._c_object,
619
 
                                               ctypes.c_void_p))
620
 
            self.credentials = credentials
621
 
 
622
 
        def __del__(self):
623
 
            gnutls.deinit(self._c_object)
624
 
 
625
 
        def handshake(self):
626
 
            return gnutls.handshake(self._c_object)
627
 
 
628
 
        def send(self, data):
629
 
            data = bytes(data)
630
 
            data_len = len(data)
631
 
            while data_len > 0:
632
 
                data_len -= gnutls.record_send(self._c_object,
633
 
                                               data[-data_len:],
634
 
                                               data_len)
635
 
 
636
 
        def bye(self):
637
 
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
 
 
639
 
    # Error handling functions
640
 
    def _error_code(result):
641
 
        """A function to raise exceptions on errors, suitable
642
 
        for the 'restype' attribute on ctypes functions"""
643
 
        if result >= 0:
644
 
            return result
645
 
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
 
            raise gnutls.CertificateSecurityError(code=result)
647
 
        raise gnutls.Error(code=result)
648
 
 
649
 
    def _retry_on_error(result, func, arguments):
650
 
        """A function to retry on some errors, suitable
651
 
        for the 'errcheck' attribute on ctypes functions"""
652
 
        while result < 0:
653
 
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
 
                return _error_code(result)
655
 
            result = func(*arguments)
656
 
        return result
657
 
 
658
 
    # Unless otherwise indicated, the function declarations below are
659
 
    # all from the gnutls/gnutls.h C header file.
660
 
 
661
 
    # Functions
662
 
    priority_set_direct = _library.gnutls_priority_set_direct
663
 
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
 
                                    ctypes.POINTER(ctypes.c_char_p)]
665
 
    priority_set_direct.restype = _error_code
666
 
 
667
 
    init = _library.gnutls_init
668
 
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
 
    init.restype = _error_code
670
 
 
671
 
    set_default_priority = _library.gnutls_set_default_priority
672
 
    set_default_priority.argtypes = [session_t]
673
 
    set_default_priority.restype = _error_code
674
 
 
675
 
    record_send = _library.gnutls_record_send
676
 
    record_send.argtypes = [session_t, ctypes.c_void_p,
677
 
                            ctypes.c_size_t]
678
 
    record_send.restype = ctypes.c_ssize_t
679
 
    record_send.errcheck = _retry_on_error
680
 
 
681
 
    certificate_allocate_credentials = (
682
 
        _library.gnutls_certificate_allocate_credentials)
683
 
    certificate_allocate_credentials.argtypes = [
684
 
        ctypes.POINTER(certificate_credentials_t)]
685
 
    certificate_allocate_credentials.restype = _error_code
686
 
 
687
 
    certificate_free_credentials = (
688
 
        _library.gnutls_certificate_free_credentials)
689
 
    certificate_free_credentials.argtypes = [
690
 
        certificate_credentials_t]
691
 
    certificate_free_credentials.restype = None
692
 
 
693
 
    handshake_set_private_extensions = (
694
 
        _library.gnutls_handshake_set_private_extensions)
695
 
    handshake_set_private_extensions.argtypes = [session_t,
696
 
                                                 ctypes.c_int]
697
 
    handshake_set_private_extensions.restype = None
698
 
 
699
 
    credentials_set = _library.gnutls_credentials_set
700
 
    credentials_set.argtypes = [session_t, credentials_type_t,
701
 
                                ctypes.c_void_p]
702
 
    credentials_set.restype = _error_code
703
 
 
704
 
    strerror = _library.gnutls_strerror
705
 
    strerror.argtypes = [ctypes.c_int]
706
 
    strerror.restype = ctypes.c_char_p
707
 
 
708
 
    certificate_type_get = _library.gnutls_certificate_type_get
709
 
    certificate_type_get.argtypes = [session_t]
710
 
    certificate_type_get.restype = _error_code
711
 
 
712
 
    certificate_get_peers = _library.gnutls_certificate_get_peers
713
 
    certificate_get_peers.argtypes = [session_t,
714
 
                                      ctypes.POINTER(ctypes.c_uint)]
715
 
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
 
 
717
 
    global_set_log_level = _library.gnutls_global_set_log_level
718
 
    global_set_log_level.argtypes = [ctypes.c_int]
719
 
    global_set_log_level.restype = None
720
 
 
721
 
    global_set_log_function = _library.gnutls_global_set_log_function
722
 
    global_set_log_function.argtypes = [log_func]
723
 
    global_set_log_function.restype = None
724
 
 
725
 
    deinit = _library.gnutls_deinit
726
 
    deinit.argtypes = [session_t]
727
 
    deinit.restype = None
728
 
 
729
 
    handshake = _library.gnutls_handshake
730
 
    handshake.argtypes = [session_t]
731
 
    handshake.restype = _error_code
732
 
    handshake.errcheck = _retry_on_error
733
 
 
734
 
    transport_set_ptr = _library.gnutls_transport_set_ptr
735
 
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
 
    transport_set_ptr.restype = None
737
 
 
738
 
    bye = _library.gnutls_bye
739
 
    bye.argtypes = [session_t, close_request_t]
740
 
    bye.restype = _error_code
741
 
    bye.errcheck = _retry_on_error
742
 
 
743
 
    check_version = _library.gnutls_check_version
744
 
    check_version.argtypes = [ctypes.c_char_p]
745
 
    check_version.restype = ctypes.c_char_p
746
 
 
747
 
    has_rawpk = bool(check_version(_tls_rawpk_version))
748
 
 
749
 
    if has_rawpk:
750
 
        # Types
751
 
        class pubkey_st(ctypes.Structure):
752
 
            _fields = []
753
 
        pubkey_t = ctypes.POINTER(pubkey_st)
754
 
 
755
 
        x509_crt_fmt_t = ctypes.c_int
756
 
 
757
 
        # All the function declarations below are from gnutls/abstract.h
758
 
        pubkey_init = _library.gnutls_pubkey_init
759
 
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
 
        pubkey_init.restype = _error_code
761
 
 
762
 
        pubkey_import = _library.gnutls_pubkey_import
763
 
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
 
                                  x509_crt_fmt_t]
765
 
        pubkey_import.restype = _error_code
766
 
 
767
 
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
 
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
 
                                      ctypes.POINTER(ctypes.c_ubyte),
770
 
                                      ctypes.POINTER(ctypes.c_size_t)]
771
 
        pubkey_get_key_id.restype = _error_code
772
 
 
773
 
        pubkey_deinit = _library.gnutls_pubkey_deinit
774
 
        pubkey_deinit.argtypes = [pubkey_t]
775
 
        pubkey_deinit.restype = None
776
 
    else:
777
 
        # All the function declarations below are from gnutls/openpgp.h
778
 
 
779
 
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
 
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
 
        openpgp_crt_init.restype = _error_code
782
 
 
783
 
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
 
        openpgp_crt_import.argtypes = [openpgp_crt_t,
785
 
                                       ctypes.POINTER(datum_t),
786
 
                                       openpgp_crt_fmt_t]
787
 
        openpgp_crt_import.restype = _error_code
788
 
 
789
 
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
 
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
 
                                            ctypes.POINTER(ctypes.c_uint)]
792
 
        openpgp_crt_verify_self.restype = _error_code
793
 
 
794
 
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
 
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
 
        openpgp_crt_deinit.restype = None
797
 
 
798
 
        openpgp_crt_get_fingerprint = (
799
 
            _library.gnutls_openpgp_crt_get_fingerprint)
800
 
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
 
                                                ctypes.c_void_p,
802
 
                                                ctypes.POINTER(
803
 
                                                    ctypes.c_size_t)]
804
 
        openpgp_crt_get_fingerprint.restype = _error_code
805
 
 
806
 
    if check_version("3.6.4"):
807
 
        certificate_type_get2 = _library.gnutls_certificate_type_get2
808
 
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
 
        certificate_type_get2.restype = _error_code
810
 
 
811
 
    # Remove non-public functions
812
 
    del _error_code, _retry_on_error
813
 
# Create the global "gnutls" object, simulating a module
814
 
gnutls = GnuTLS()
815
 
 
816
 
 
817
 
def call_pipe(connection,       # : multiprocessing.Connection
818
 
              func, *args, **kwargs):
819
 
    """This function is meant to be called by multiprocessing.Process
820
 
 
821
 
    This function runs func(*args, **kwargs), and writes the resulting
822
 
    return value on the provided multiprocessing.Connection.
823
 
    """
824
 
    connection.send(func(*args, **kwargs))
825
 
    connection.close()
826
 
 
827
 
 
 
267
def _timedelta_to_milliseconds(td):
 
268
    "Convert a datetime.timedelta() to milliseconds"
 
269
    return ((td.days * 24 * 60 * 60 * 1000)
 
270
            + (td.seconds * 1000)
 
271
            + (td.microseconds // 1000))
 
272
        
828
273
class Client(object):
829
274
    """A representation of a client host served by this server.
830
 
 
 
275
    
831
276
    Attributes:
832
 
    approved:   bool(); 'None' if not yet approved/disapproved
 
277
    _approved:   bool(); 'None' if not yet approved/disapproved
833
278
    approval_delay: datetime.timedelta(); Time to wait for approval
834
279
    approval_duration: datetime.timedelta(); Duration of one approval
835
280
    checker:    subprocess.Popen(); a running checker process used
836
281
                                    to see if the client lives.
837
282
                                    'None' if no process is running.
838
 
    checker_callback_tag: a GLib event source tag, or None
 
283
    checker_callback_tag: a gobject event source tag, or None
839
284
    checker_command: string; External command which is run to check
840
285
                     if client lives.  %() expansions are done at
841
286
                     runtime with vars(self) as dict, so that for
842
287
                     instance %(name)s can be used in the command.
843
 
    checker_initiator_tag: a GLib event source tag, or None
 
288
    checker_initiator_tag: a gobject event source tag, or None
844
289
    created:    datetime.datetime(); (UTC) object creation
845
 
    client_structure: Object describing what attributes a client has
846
 
                      and is used for storing the client at exit
847
290
    current_checker_command: string; current running checker_command
848
 
    disable_initiator_tag: a GLib event source tag, or None
 
291
    disable_hook:  If set, called by disable() as disable_hook(self)
 
292
    disable_initiator_tag: a gobject event source tag, or None
849
293
    enabled:    bool()
850
294
    fingerprint: string (40 or 32 hexadecimal digits); used to
851
 
                 uniquely identify an OpenPGP client
852
 
    key_id: string (64 hexadecimal digits); used to uniquely identify
853
 
            a client using raw public keys
 
295
                 uniquely identify the client
854
296
    host:       string; available for use by the checker command
855
297
    interval:   datetime.timedelta(); How often to start a new checker
856
298
    last_approval_request: datetime.datetime(); (UTC) or None
857
299
    last_checked_ok: datetime.datetime(); (UTC) or None
858
 
    last_checker_status: integer between 0 and 255 reflecting exit
859
 
                         status of last checker. -1 reflects crashed
860
 
                         checker, -2 means no checker completed yet.
861
 
    last_checker_signal: The signal which killed the last checker, if
862
 
                         last_checker_status is -1
863
 
    last_enabled: datetime.datetime(); (UTC) or None
 
300
    last_enabled: datetime.datetime(); (UTC)
864
301
    name:       string; from the config file, used in log messages and
865
302
                        D-Bus identifiers
866
303
    secret:     bytestring; sent verbatim (over TLS) to client
867
304
    timeout:    datetime.timedelta(); How long from last_checked_ok
868
305
                                      until this client is disabled
869
 
    extended_timeout:   extra long timeout when secret has been sent
 
306
    extended_timeout:   extra long timeout when password has been sent
870
307
    runtime_expansions: Allowed attributes for runtime expansion.
871
308
    expires:    datetime.datetime(); time (UTC) when a client will be
872
309
                disabled, or None
873
 
    server_settings: The server_settings dict from main()
874
310
    """
875
 
 
 
311
    
876
312
    runtime_expansions = ("approval_delay", "approval_duration",
877
 
                          "created", "enabled", "expires", "key_id",
878
 
                          "fingerprint", "host", "interval",
879
 
                          "last_approval_request", "last_checked_ok",
 
313
                          "created", "enabled", "fingerprint",
 
314
                          "host", "interval", "last_checked_ok",
880
315
                          "last_enabled", "name", "timeout")
881
 
    client_defaults = {
882
 
        "timeout": "PT5M",
883
 
        "extended_timeout": "PT15M",
884
 
        "interval": "PT2M",
885
 
        "checker": "fping -q -- %%(host)s",
886
 
        "host": "",
887
 
        "approval_delay": "PT0S",
888
 
        "approval_duration": "PT1S",
889
 
        "approved_by_default": "True",
890
 
        "enabled": "True",
891
 
    }
892
 
 
893
 
    @staticmethod
894
 
    def config_parser(config):
895
 
        """Construct a new dict of client settings of this form:
896
 
        { client_name: {setting_name: value, ...}, ...}
897
 
        with exceptions for any special settings as defined above.
898
 
        NOTE: Must be a pure function. Must return the same result
899
 
        value given the same arguments.
900
 
        """
901
 
        settings = {}
902
 
        for client_name in config.sections():
903
 
            section = dict(config.items(client_name))
904
 
            client = settings[client_name] = {}
905
 
 
906
 
            client["host"] = section["host"]
907
 
            # Reformat values from string types to Python types
908
 
            client["approved_by_default"] = config.getboolean(
909
 
                client_name, "approved_by_default")
910
 
            client["enabled"] = config.getboolean(client_name,
911
 
                                                  "enabled")
912
 
 
913
 
            # Uppercase and remove spaces from key_id and fingerprint
914
 
            # for later comparison purposes with return value from the
915
 
            # key_id() and fingerprint() functions
916
 
            client["key_id"] = (section.get("key_id", "").upper()
917
 
                                .replace(" ", ""))
918
 
            client["fingerprint"] = (section["fingerprint"].upper()
919
 
                                     .replace(" ", ""))
920
 
            if "secret" in section:
921
 
                client["secret"] = codecs.decode(section["secret"]
922
 
                                                 .encode("utf-8"),
923
 
                                                 "base64")
924
 
            elif "secfile" in section:
925
 
                with open(os.path.expanduser(os.path.expandvars
926
 
                                             (section["secfile"])),
927
 
                          "rb") as secfile:
928
 
                    client["secret"] = secfile.read()
929
 
            else:
930
 
                raise TypeError("No secret or secfile for section {}"
931
 
                                .format(section))
932
 
            client["timeout"] = string_to_delta(section["timeout"])
933
 
            client["extended_timeout"] = string_to_delta(
934
 
                section["extended_timeout"])
935
 
            client["interval"] = string_to_delta(section["interval"])
936
 
            client["approval_delay"] = string_to_delta(
937
 
                section["approval_delay"])
938
 
            client["approval_duration"] = string_to_delta(
939
 
                section["approval_duration"])
940
 
            client["checker_command"] = section["checker"]
941
 
            client["last_approval_request"] = None
942
 
            client["last_checked_ok"] = None
943
 
            client["last_checker_status"] = -2
944
 
 
945
 
        return settings
946
 
 
947
 
    def __init__(self, settings, name=None, server_settings=None):
 
316
        
 
317
    def timeout_milliseconds(self):
 
318
        "Return the 'timeout' attribute in milliseconds"
 
319
        return _timedelta_to_milliseconds(self.timeout)
 
320
 
 
321
    def extended_timeout_milliseconds(self):
 
322
        "Return the 'extended_timeout' attribute in milliseconds"
 
323
        return _timedelta_to_milliseconds(self.extended_timeout)    
 
324
    
 
325
    def interval_milliseconds(self):
 
326
        "Return the 'interval' attribute in milliseconds"
 
327
        return _timedelta_to_milliseconds(self.interval)
 
328
 
 
329
    def approval_delay_milliseconds(self):
 
330
        return _timedelta_to_milliseconds(self.approval_delay)
 
331
    
 
332
    def __init__(self, name = None, disable_hook=None, config=None):
 
333
        """Note: the 'checker' key in 'config' sets the
 
334
        'checker_command' attribute and *not* the 'checker'
 
335
        attribute."""
948
336
        self.name = name
949
 
        if server_settings is None:
950
 
            server_settings = {}
951
 
        self.server_settings = server_settings
952
 
        # adding all client settings
953
 
        for setting, value in settings.items():
954
 
            setattr(self, setting, value)
955
 
 
956
 
        if self.enabled:
957
 
            if not hasattr(self, "last_enabled"):
958
 
                self.last_enabled = datetime.datetime.utcnow()
959
 
            if not hasattr(self, "expires"):
960
 
                self.expires = (datetime.datetime.utcnow()
961
 
                                + self.timeout)
962
 
        else:
963
 
            self.last_enabled = None
964
 
            self.expires = None
965
 
 
 
337
        if config is None:
 
338
            config = {}
966
339
        logger.debug("Creating client %r", self.name)
967
 
        logger.debug("  Key ID: %s", self.key_id)
 
340
        # Uppercase and remove spaces from fingerprint for later
 
341
        # comparison purposes with return value from the fingerprint()
 
342
        # function
 
343
        self.fingerprint = (config["fingerprint"].upper()
 
344
                            .replace(" ", ""))
968
345
        logger.debug("  Fingerprint: %s", self.fingerprint)
969
 
        self.created = settings.get("created",
970
 
                                    datetime.datetime.utcnow())
971
 
 
972
 
        # attributes specific for this server instance
 
346
        if "secret" in config:
 
347
            self.secret = config["secret"].decode("base64")
 
348
        elif "secfile" in config:
 
349
            with open(os.path.expanduser(os.path.expandvars
 
350
                                         (config["secfile"])),
 
351
                      "rb") as secfile:
 
352
                self.secret = secfile.read()
 
353
        else:
 
354
            raise TypeError("No secret or secfile for client %s"
 
355
                            % self.name)
 
356
        self.host = config.get("host", "")
 
357
        self.created = datetime.datetime.utcnow()
 
358
        self.enabled = False
 
359
        self.last_approval_request = None
 
360
        self.last_enabled = None
 
361
        self.last_checked_ok = None
 
362
        self.timeout = string_to_delta(config["timeout"])
 
363
        self.extended_timeout = string_to_delta(config["extended_timeout"])
 
364
        self.interval = string_to_delta(config["interval"])
 
365
        self.disable_hook = disable_hook
973
366
        self.checker = None
974
367
        self.checker_initiator_tag = None
975
368
        self.disable_initiator_tag = None
 
369
        self.expires = None
976
370
        self.checker_callback_tag = None
 
371
        self.checker_command = config["checker"]
977
372
        self.current_checker_command = None
978
 
        self.approved = None
 
373
        self.last_connect = None
 
374
        self._approved = None
 
375
        self.approved_by_default = config.get("approved_by_default",
 
376
                                              True)
979
377
        self.approvals_pending = 0
980
 
        self.changedstate = multiprocessing_manager.Condition(
981
 
            multiprocessing_manager.Lock())
982
 
        self.client_structure = [attr
983
 
                                 for attr in self.__dict__.keys()
984
 
                                 if not attr.startswith("_")]
985
 
        self.client_structure.append("client_structure")
986
 
 
987
 
        for name, t in inspect.getmembers(
988
 
                type(self), lambda obj: isinstance(obj, property)):
989
 
            if not name.startswith("_"):
990
 
                self.client_structure.append(name)
991
 
 
992
 
    # Send notice to process children that client state has changed
 
378
        self.approval_delay = string_to_delta(
 
379
            config["approval_delay"])
 
380
        self.approval_duration = string_to_delta(
 
381
            config["approval_duration"])
 
382
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
 
383
    
993
384
    def send_changedstate(self):
994
 
        with self.changedstate:
995
 
            self.changedstate.notify_all()
996
 
 
 
385
        self.changedstate.acquire()
 
386
        self.changedstate.notify_all()
 
387
        self.changedstate.release()
 
388
        
997
389
    def enable(self):
998
390
        """Start this client's checker and timeout hooks"""
999
391
        if getattr(self, "enabled", False):
1000
392
            # Already enabled
1001
393
            return
 
394
        self.send_changedstate()
 
395
        # Schedule a new checker to be started an 'interval' from now,
 
396
        # and every interval from then on.
 
397
        self.checker_initiator_tag = (gobject.timeout_add
 
398
                                      (self.interval_milliseconds(),
 
399
                                       self.start_checker))
 
400
        # Schedule a disable() when 'timeout' has passed
1002
401
        self.expires = datetime.datetime.utcnow() + self.timeout
 
402
        self.disable_initiator_tag = (gobject.timeout_add
 
403
                                   (self.timeout_milliseconds(),
 
404
                                    self.disable))
1003
405
        self.enabled = True
1004
406
        self.last_enabled = datetime.datetime.utcnow()
1005
 
        self.init_checker()
1006
 
        self.send_changedstate()
1007
 
 
 
407
        # Also start a new checker *right now*.
 
408
        self.start_checker()
 
409
    
1008
410
    def disable(self, quiet=True):
1009
411
        """Disable this client."""
1010
412
        if not getattr(self, "enabled", False):
1011
413
            return False
1012
414
        if not quiet:
 
415
            self.send_changedstate()
 
416
        if not quiet:
1013
417
            logger.info("Disabling client %s", self.name)
1014
 
        if getattr(self, "disable_initiator_tag", None) is not None:
1015
 
            GLib.source_remove(self.disable_initiator_tag)
 
418
        if getattr(self, "disable_initiator_tag", False):
 
419
            gobject.source_remove(self.disable_initiator_tag)
1016
420
            self.disable_initiator_tag = None
1017
421
        self.expires = None
1018
 
        if getattr(self, "checker_initiator_tag", None) is not None:
1019
 
            GLib.source_remove(self.checker_initiator_tag)
 
422
        if getattr(self, "checker_initiator_tag", False):
 
423
            gobject.source_remove(self.checker_initiator_tag)
1020
424
            self.checker_initiator_tag = None
1021
425
        self.stop_checker()
 
426
        if self.disable_hook:
 
427
            self.disable_hook(self)
1022
428
        self.enabled = False
1023
 
        if not quiet:
1024
 
            self.send_changedstate()
1025
 
        # Do not run this again if called by a GLib.timeout_add
 
429
        # Do not run this again if called by a gobject.timeout_add
1026
430
        return False
1027
 
 
 
431
    
1028
432
    def __del__(self):
 
433
        self.disable_hook = None
1029
434
        self.disable()
1030
 
 
1031
 
    def init_checker(self):
1032
 
        # Schedule a new checker to be started an 'interval' from now,
1033
 
        # and every interval from then on.
1034
 
        if self.checker_initiator_tag is not None:
1035
 
            GLib.source_remove(self.checker_initiator_tag)
1036
 
        self.checker_initiator_tag = GLib.timeout_add(
1037
 
            int(self.interval.total_seconds() * 1000),
1038
 
            self.start_checker)
1039
 
        # Schedule a disable() when 'timeout' has passed
1040
 
        if self.disable_initiator_tag is not None:
1041
 
            GLib.source_remove(self.disable_initiator_tag)
1042
 
        self.disable_initiator_tag = GLib.timeout_add(
1043
 
            int(self.timeout.total_seconds() * 1000), self.disable)
1044
 
        # Also start a new checker *right now*.
1045
 
        self.start_checker()
1046
 
 
1047
 
    def checker_callback(self, source, condition, connection,
1048
 
                         command):
 
435
    
 
436
    def checker_callback(self, pid, condition, command):
1049
437
        """The checker has completed, so take appropriate actions."""
1050
438
        self.checker_callback_tag = None
1051
439
        self.checker = None
1052
 
        # Read return code from connection (see call_pipe)
1053
 
        returncode = connection.recv()
1054
 
        connection.close()
1055
 
 
1056
 
        if returncode >= 0:
1057
 
            self.last_checker_status = returncode
1058
 
            self.last_checker_signal = None
1059
 
            if self.last_checker_status == 0:
 
440
        if os.WIFEXITED(condition):
 
441
            exitstatus = os.WEXITSTATUS(condition)
 
442
            if exitstatus == 0:
1060
443
                logger.info("Checker for %(name)s succeeded",
1061
444
                            vars(self))
1062
445
                self.checked_ok()
1063
446
            else:
1064
 
                logger.info("Checker for %(name)s failed", vars(self))
 
447
                logger.info("Checker for %(name)s failed",
 
448
                            vars(self))
1065
449
        else:
1066
 
            self.last_checker_status = -1
1067
 
            self.last_checker_signal = -returncode
1068
450
            logger.warning("Checker for %(name)s crashed?",
1069
451
                           vars(self))
1070
 
        return False
1071
 
 
1072
 
    def checked_ok(self):
1073
 
        """Assert that the client has been seen, alive and well."""
1074
 
        self.last_checked_ok = datetime.datetime.utcnow()
1075
 
        self.last_checker_status = 0
1076
 
        self.last_checker_signal = None
1077
 
        self.bump_timeout()
1078
 
 
1079
 
    def bump_timeout(self, timeout=None):
1080
 
        """Bump up the timeout for this client."""
 
452
    
 
453
    def checked_ok(self, timeout=None):
 
454
        """Bump up the timeout for this client.
 
455
        
 
456
        This should only be called when the client has been seen,
 
457
        alive and well.
 
458
        """
1081
459
        if timeout is None:
1082
460
            timeout = self.timeout
1083
 
        if self.disable_initiator_tag is not None:
1084
 
            GLib.source_remove(self.disable_initiator_tag)
1085
 
            self.disable_initiator_tag = None
1086
 
        if getattr(self, "enabled", False):
1087
 
            self.disable_initiator_tag = GLib.timeout_add(
1088
 
                int(timeout.total_seconds() * 1000), self.disable)
1089
 
            self.expires = datetime.datetime.utcnow() + timeout
1090
 
 
 
461
        self.last_checked_ok = datetime.datetime.utcnow()
 
462
        gobject.source_remove(self.disable_initiator_tag)
 
463
        self.expires = datetime.datetime.utcnow() + timeout
 
464
        self.disable_initiator_tag = (gobject.timeout_add
 
465
                                      (_timedelta_to_milliseconds(timeout),
 
466
                                       self.disable))
 
467
    
1091
468
    def need_approval(self):
1092
469
        self.last_approval_request = datetime.datetime.utcnow()
1093
 
 
 
470
    
1094
471
    def start_checker(self):
1095
472
        """Start a new checker subprocess if one is not running.
1096
 
 
 
473
        
1097
474
        If a checker already exists, leave it running and do
1098
475
        nothing."""
1099
476
        # The reason for not killing a running checker is that if we
1100
 
        # did that, and if a checker (for some reason) started running
1101
 
        # slowly and taking more than 'interval' time, then the client
1102
 
        # would inevitably timeout, since no checker would get a
1103
 
        # chance to run to completion.  If we instead leave running
 
477
        # did that, then if a checker (for some reason) started
 
478
        # running slowly and taking more than 'interval' time, the
 
479
        # client would inevitably timeout, since no checker would get
 
480
        # a chance to run to completion.  If we instead leave running
1104
481
        # checkers alone, the checker would have to take more time
1105
482
        # than 'timeout' for the client to be disabled, which is as it
1106
483
        # should be.
1107
 
 
1108
 
        if self.checker is not None and not self.checker.is_alive():
1109
 
            logger.warning("Checker was not alive; joining")
1110
 
            self.checker.join()
1111
 
            self.checker = None
 
484
        
 
485
        # If a checker exists, make sure it is not a zombie
 
486
        try:
 
487
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
488
        except (AttributeError, OSError) as error:
 
489
            if (isinstance(error, OSError)
 
490
                and error.errno != errno.ECHILD):
 
491
                raise error
 
492
        else:
 
493
            if pid:
 
494
                logger.warning("Checker was a zombie")
 
495
                gobject.source_remove(self.checker_callback_tag)
 
496
                self.checker_callback(pid, status,
 
497
                                      self.current_checker_command)
1112
498
        # Start a new checker if needed
1113
499
        if self.checker is None:
1114
 
            # Escape attributes for the shell
1115
 
            escaped_attrs = {
1116
 
                attr: re.escape(str(getattr(self, attr)))
1117
 
                for attr in self.runtime_expansions}
1118
500
            try:
1119
 
                command = self.checker_command % escaped_attrs
1120
 
            except TypeError as error:
1121
 
                logger.error('Could not format string "%s"',
1122
 
                             self.checker_command,
1123
 
                             exc_info=error)
1124
 
                return True     # Try again later
 
501
                # In case checker_command has exactly one % operator
 
502
                command = self.checker_command % self.host
 
503
            except TypeError:
 
504
                # Escape attributes for the shell
 
505
                escaped_attrs = dict(
 
506
                    (attr,
 
507
                     re.escape(unicode(str(getattr(self, attr, "")),
 
508
                                       errors=
 
509
                                       'replace')))
 
510
                    for attr in
 
511
                    self.runtime_expansions)
 
512
 
 
513
                try:
 
514
                    command = self.checker_command % escaped_attrs
 
515
                except TypeError as error:
 
516
                    logger.error('Could not format string "%s":'
 
517
                                 ' %s', self.checker_command, error)
 
518
                    return True # Try again later
1125
519
            self.current_checker_command = command
1126
 
            logger.info("Starting checker %r for %s", command,
1127
 
                        self.name)
1128
 
            # We don't need to redirect stdout and stderr, since
1129
 
            # in normal mode, that is already done by daemon(),
1130
 
            # and in debug mode we don't want to.  (Stdin is
1131
 
            # always replaced by /dev/null.)
1132
 
            # The exception is when not debugging but nevertheless
1133
 
            # running in the foreground; use the previously
1134
 
            # created wnull.
1135
 
            popen_args = {"close_fds": True,
1136
 
                          "shell": True,
1137
 
                          "cwd": "/"}
1138
 
            if (not self.server_settings["debug"]
1139
 
                and self.server_settings["foreground"]):
1140
 
                popen_args.update({"stdout": wnull,
1141
 
                                   "stderr": wnull})
1142
 
            pipe = multiprocessing.Pipe(duplex=False)
1143
 
            self.checker = multiprocessing.Process(
1144
 
                target=call_pipe,
1145
 
                args=(pipe[1], subprocess.call, command),
1146
 
                kwargs=popen_args)
1147
 
            self.checker.start()
1148
 
            self.checker_callback_tag = GLib.io_add_watch(
1149
 
                pipe[0].fileno(), GLib.IO_IN,
1150
 
                self.checker_callback, pipe[0], command)
1151
 
        # Re-run this periodically if run by GLib.timeout_add
 
520
            try:
 
521
                logger.info("Starting checker %r for %s",
 
522
                            command, self.name)
 
523
                # We don't need to redirect stdout and stderr, since
 
524
                # in normal mode, that is already done by daemon(),
 
525
                # and in debug mode we don't want to.  (Stdin is
 
526
                # always replaced by /dev/null.)
 
527
                self.checker = subprocess.Popen(command,
 
528
                                                close_fds=True,
 
529
                                                shell=True, cwd="/")
 
530
                self.checker_callback_tag = (gobject.child_watch_add
 
531
                                             (self.checker.pid,
 
532
                                              self.checker_callback,
 
533
                                              data=command))
 
534
                # The checker may have completed before the gobject
 
535
                # watch was added.  Check for this.
 
536
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
537
                if pid:
 
538
                    gobject.source_remove(self.checker_callback_tag)
 
539
                    self.checker_callback(pid, status, command)
 
540
            except OSError as error:
 
541
                logger.error("Failed to start subprocess: %s",
 
542
                             error)
 
543
        # Re-run this periodically if run by gobject.timeout_add
1152
544
        return True
1153
 
 
 
545
    
1154
546
    def stop_checker(self):
1155
547
        """Force the checker process, if any, to stop."""
1156
548
        if self.checker_callback_tag:
1157
 
            GLib.source_remove(self.checker_callback_tag)
 
549
            gobject.source_remove(self.checker_callback_tag)
1158
550
            self.checker_callback_tag = None
1159
551
        if getattr(self, "checker", None) is None:
1160
552
            return
1161
553
        logger.debug("Stopping checker for %(name)s", vars(self))
1162
 
        self.checker.terminate()
 
554
        try:
 
555
            os.kill(self.checker.pid, signal.SIGTERM)
 
556
            #time.sleep(0.5)
 
557
            #if self.checker.poll() is None:
 
558
            #    os.kill(self.checker.pid, signal.SIGKILL)
 
559
        except OSError as error:
 
560
            if error.errno != errno.ESRCH: # No such process
 
561
                raise
1163
562
        self.checker = None
1164
563
 
1165
 
 
1166
 
def dbus_service_property(dbus_interface,
1167
 
                          signature="v",
1168
 
                          access="readwrite",
1169
 
                          byte_arrays=False):
 
564
def dbus_service_property(dbus_interface, signature="v",
 
565
                          access="readwrite", byte_arrays=False):
1170
566
    """Decorators for marking methods of a DBusObjectWithProperties to
1171
567
    become properties on the D-Bus.
1172
 
 
 
568
    
1173
569
    The decorated method will be called with no arguments by "Get"
1174
570
    and with one argument by "Set".
1175
 
 
 
571
    
1176
572
    The parameters, where they are supported, are the same as
1177
573
    dbus.service.method, except there is only "signature", since the
1178
574
    type from Get() and the type sent to Set() is the same.
1181
577
    # "Set" method, so we fail early here:
1182
578
    if byte_arrays and signature != "ay":
1183
579
        raise ValueError("Byte arrays not supported for non-'ay'"
1184
 
                         " signature {!r}".format(signature))
1185
 
 
 
580
                         " signature %r" % signature)
1186
581
    def decorator(func):
1187
582
        func._dbus_is_property = True
1188
583
        func._dbus_interface = dbus_interface
1191
586
        func._dbus_name = func.__name__
1192
587
        if func._dbus_name.endswith("_dbus_property"):
1193
588
            func._dbus_name = func._dbus_name[:-14]
1194
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
 
        return func
1196
 
 
1197
 
    return decorator
1198
 
 
1199
 
 
1200
 
def dbus_interface_annotations(dbus_interface):
1201
 
    """Decorator for marking functions returning interface annotations
1202
 
 
1203
 
    Usage:
1204
 
 
1205
 
    @dbus_interface_annotations("org.example.Interface")
1206
 
    def _foo(self):  # Function name does not matter
1207
 
        return {"org.freedesktop.DBus.Deprecated": "true",
1208
 
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
 
                    "false"}
1210
 
    """
1211
 
 
1212
 
    def decorator(func):
1213
 
        func._dbus_is_interface = True
1214
 
        func._dbus_interface = dbus_interface
1215
 
        func._dbus_name = dbus_interface
1216
 
        return func
1217
 
 
1218
 
    return decorator
1219
 
 
1220
 
 
1221
 
def dbus_annotations(annotations):
1222
 
    """Decorator to annotate D-Bus methods, signals or properties
1223
 
    Usage:
1224
 
 
1225
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
 
                       "org.freedesktop.DBus.Property."
1227
 
                       "EmitsChangedSignal": "false"})
1228
 
    @dbus_service_property("org.example.Interface", signature="b",
1229
 
                           access="r")
1230
 
    def Property_dbus_property(self):
1231
 
        return dbus.Boolean(False)
1232
 
 
1233
 
    See also the DBusObjectWithAnnotations class.
1234
 
    """
1235
 
 
1236
 
    def decorator(func):
1237
 
        func._dbus_annotations = annotations
1238
 
        return func
1239
 
 
 
589
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
590
        return func
1240
591
    return decorator
1241
592
 
1242
593
 
1243
594
class DBusPropertyException(dbus.exceptions.DBusException):
1244
595
    """A base class for D-Bus property-related exceptions
1245
596
    """
1246
 
    pass
 
597
    def __unicode__(self):
 
598
        return unicode(str(self))
1247
599
 
1248
600
 
1249
601
class DBusPropertyAccessException(DBusPropertyException):
1258
610
    pass
1259
611
 
1260
612
 
1261
 
class DBusObjectWithAnnotations(dbus.service.Object):
1262
 
    """A D-Bus object with annotations.
1263
 
 
1264
 
    Classes inheriting from this can use the dbus_annotations
1265
 
    decorator to add annotations to methods or signals.
1266
 
    """
1267
 
 
1268
 
    @staticmethod
1269
 
    def _is_dbus_thing(thing):
1270
 
        """Returns a function testing if an attribute is a D-Bus thing
1271
 
 
1272
 
        If called like _is_dbus_thing("method") it returns a function
1273
 
        suitable for use as predicate to inspect.getmembers().
1274
 
        """
1275
 
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
 
                                   False)
1277
 
 
1278
 
    def _get_all_dbus_things(self, thing):
1279
 
        """Returns a generator of (name, attribute) pairs
1280
 
        """
1281
 
        return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
 
                 athing.__get__(self))
1283
 
                for cls in self.__class__.__mro__
1284
 
                for name, athing in
1285
 
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
 
 
1287
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
 
                         out_signature="s",
1289
 
                         path_keyword='object_path',
1290
 
                         connection_keyword='connection')
1291
 
    def Introspect(self, object_path, connection):
1292
 
        """Overloading of standard D-Bus method.
1293
 
 
1294
 
        Inserts annotation tags on methods and signals.
1295
 
        """
1296
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
 
                                                   connection)
1298
 
        try:
1299
 
            document = xml.dom.minidom.parseString(xmlstring)
1300
 
 
1301
 
            for if_tag in document.getElementsByTagName("interface"):
1302
 
                # Add annotation tags
1303
 
                for typ in ("method", "signal"):
1304
 
                    for tag in if_tag.getElementsByTagName(typ):
1305
 
                        annots = dict()
1306
 
                        for name, prop in (self.
1307
 
                                           _get_all_dbus_things(typ)):
1308
 
                            if (name == tag.getAttribute("name")
1309
 
                                and prop._dbus_interface
1310
 
                                == if_tag.getAttribute("name")):
1311
 
                                annots.update(getattr(
1312
 
                                    prop, "_dbus_annotations", {}))
1313
 
                        for name, value in annots.items():
1314
 
                            ann_tag = document.createElement(
1315
 
                                "annotation")
1316
 
                            ann_tag.setAttribute("name", name)
1317
 
                            ann_tag.setAttribute("value", value)
1318
 
                            tag.appendChild(ann_tag)
1319
 
                # Add interface annotation tags
1320
 
                for annotation, value in dict(
1321
 
                    itertools.chain.from_iterable(
1322
 
                        annotations().items()
1323
 
                        for name, annotations
1324
 
                        in self._get_all_dbus_things("interface")
1325
 
                        if name == if_tag.getAttribute("name")
1326
 
                        )).items():
1327
 
                    ann_tag = document.createElement("annotation")
1328
 
                    ann_tag.setAttribute("name", annotation)
1329
 
                    ann_tag.setAttribute("value", value)
1330
 
                    if_tag.appendChild(ann_tag)
1331
 
                # Fix argument name for the Introspect method itself
1332
 
                if (if_tag.getAttribute("name")
1333
 
                    == dbus.INTROSPECTABLE_IFACE):
1334
 
                    for cn in if_tag.getElementsByTagName("method"):
1335
 
                        if cn.getAttribute("name") == "Introspect":
1336
 
                            for arg in cn.getElementsByTagName("arg"):
1337
 
                                if (arg.getAttribute("direction")
1338
 
                                    == "out"):
1339
 
                                    arg.setAttribute("name",
1340
 
                                                     "xml_data")
1341
 
            xmlstring = document.toxml("utf-8")
1342
 
            document.unlink()
1343
 
        except (AttributeError, xml.dom.DOMException,
1344
 
                xml.parsers.expat.ExpatError) as error:
1345
 
            logger.error("Failed to override Introspection method",
1346
 
                         exc_info=error)
1347
 
        return xmlstring
1348
 
 
1349
 
 
1350
 
class DBusObjectWithProperties(DBusObjectWithAnnotations):
 
613
class DBusObjectWithProperties(dbus.service.Object):
1351
614
    """A D-Bus object with properties.
1352
615
 
1353
616
    Classes inheriting from this can use the dbus_service_property
1354
617
    decorator to expose methods as D-Bus properties.  It exposes the
1355
618
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
619
    """
1357
 
 
 
620
    
 
621
    @staticmethod
 
622
    def _is_dbus_property(obj):
 
623
        return getattr(obj, "_dbus_is_property", False)
 
624
    
 
625
    def _get_all_dbus_properties(self):
 
626
        """Returns a generator of (name, attribute) pairs
 
627
        """
 
628
        return ((prop._dbus_name, prop)
 
629
                for name, prop in
 
630
                inspect.getmembers(self, self._is_dbus_property))
 
631
    
1358
632
    def _get_dbus_property(self, interface_name, property_name):
1359
633
        """Returns a bound method if one exists which is a D-Bus
1360
634
        property with the specified name and interface.
1361
635
        """
1362
 
        for cls in self.__class__.__mro__:
1363
 
            for name, value in inspect.getmembers(
1364
 
                    cls, self._is_dbus_thing("property")):
1365
 
                if (value._dbus_name == property_name
1366
 
                    and value._dbus_interface == interface_name):
1367
 
                    return value.__get__(self)
1368
 
 
 
636
        for name in (property_name,
 
637
                     property_name + "_dbus_property"):
 
638
            prop = getattr(self, name, None)
 
639
            if (prop is None
 
640
                or not self._is_dbus_property(prop)
 
641
                or prop._dbus_name != property_name
 
642
                or (interface_name and prop._dbus_interface
 
643
                    and interface_name != prop._dbus_interface)):
 
644
                continue
 
645
            return prop
1369
646
        # No such property
1370
 
        raise DBusPropertyNotFound("{}:{}.{}".format(
1371
 
            self.dbus_object_path, interface_name, property_name))
1372
 
 
1373
 
    @classmethod
1374
 
    def _get_all_interface_names(cls):
1375
 
        """Get a sequence of all interfaces supported by an object"""
1376
 
        return (name for name in set(getattr(getattr(x, attr),
1377
 
                                             "_dbus_interface", None)
1378
 
                                     for x in (inspect.getmro(cls))
1379
 
                                     for attr in dir(x))
1380
 
                if name is not None)
1381
 
 
1382
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1383
 
                         in_signature="ss",
 
647
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
 
648
                                   + interface_name + "."
 
649
                                   + property_name)
 
650
    
 
651
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1384
652
                         out_signature="v")
1385
653
    def Get(self, interface_name, property_name):
1386
654
        """Standard D-Bus property Get() method, see D-Bus standard.
1392
660
        if not hasattr(value, "variant_level"):
1393
661
            return value
1394
662
        return type(value)(value, variant_level=value.variant_level+1)
1395
 
 
 
663
    
1396
664
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1397
665
    def Set(self, interface_name, property_name, value):
1398
666
        """Standard D-Bus property Set() method, see D-Bus standard.
1404
672
            # The byte_arrays option is not supported yet on
1405
673
            # signatures other than "ay".
1406
674
            if prop._dbus_signature != "ay":
1407
 
                raise ValueError("Byte arrays not supported for non-"
1408
 
                                 "'ay' signature {!r}"
1409
 
                                 .format(prop._dbus_signature))
1410
 
            value = dbus.ByteArray(b''.join(chr(byte)
1411
 
                                            for byte in value))
 
675
                raise ValueError
 
676
            value = dbus.ByteArray(''.join(unichr(byte)
 
677
                                           for byte in value))
1412
678
        prop(value)
1413
 
 
1414
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1415
 
                         in_signature="s",
 
679
    
 
680
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1416
681
                         out_signature="a{sv}")
1417
682
    def GetAll(self, interface_name):
1418
683
        """Standard D-Bus property GetAll() method, see D-Bus
1420
685
 
1421
686
        Note: Will not include properties with access="write".
1422
687
        """
1423
 
        properties = {}
1424
 
        for name, prop in self._get_all_dbus_things("property"):
 
688
        all = {}
 
689
        for name, prop in self._get_all_dbus_properties():
1425
690
            if (interface_name
1426
691
                and interface_name != prop._dbus_interface):
1427
692
                # Interface non-empty but did not match
1431
696
                continue
1432
697
            value = prop()
1433
698
            if not hasattr(value, "variant_level"):
1434
 
                properties[name] = value
 
699
                all[name] = value
1435
700
                continue
1436
 
            properties[name] = type(value)(
1437
 
                value, variant_level=value.variant_level + 1)
1438
 
        return dbus.Dictionary(properties, signature="sv")
1439
 
 
1440
 
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
 
    def PropertiesChanged(self, interface_name, changed_properties,
1442
 
                          invalidated_properties):
1443
 
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
 
        standard.
1445
 
        """
1446
 
        pass
1447
 
 
 
701
            all[name] = type(value)(value, variant_level=
 
702
                                    value.variant_level+1)
 
703
        return dbus.Dictionary(all, signature="sv")
 
704
    
1448
705
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1449
706
                         out_signature="s",
1450
707
                         path_keyword='object_path',
1451
708
                         connection_keyword='connection')
1452
709
    def Introspect(self, object_path, connection):
1453
 
        """Overloading of standard D-Bus method.
1454
 
 
1455
 
        Inserts property tags and interface annotation tags.
 
710
        """Standard D-Bus method, overloaded to insert property tags.
1456
711
        """
1457
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
 
                                                         object_path,
1459
 
                                                         connection)
 
712
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
713
                                                   connection)
1460
714
        try:
1461
715
            document = xml.dom.minidom.parseString(xmlstring)
1462
 
 
1463
716
            def make_tag(document, name, prop):
1464
717
                e = document.createElement("property")
1465
718
                e.setAttribute("name", name)
1466
719
                e.setAttribute("type", prop._dbus_signature)
1467
720
                e.setAttribute("access", prop._dbus_access)
1468
721
                return e
1469
 
 
1470
722
            for if_tag in document.getElementsByTagName("interface"):
1471
 
                # Add property tags
1472
723
                for tag in (make_tag(document, name, prop)
1473
724
                            for name, prop
1474
 
                            in self._get_all_dbus_things("property")
 
725
                            in self._get_all_dbus_properties()
1475
726
                            if prop._dbus_interface
1476
727
                            == if_tag.getAttribute("name")):
1477
728
                    if_tag.appendChild(tag)
1478
 
                # Add annotation tags for properties
1479
 
                for tag in if_tag.getElementsByTagName("property"):
1480
 
                    annots = dict()
1481
 
                    for name, prop in self._get_all_dbus_things(
1482
 
                            "property"):
1483
 
                        if (name == tag.getAttribute("name")
1484
 
                            and prop._dbus_interface
1485
 
                            == if_tag.getAttribute("name")):
1486
 
                            annots.update(getattr(
1487
 
                                prop, "_dbus_annotations", {}))
1488
 
                    for name, value in annots.items():
1489
 
                        ann_tag = document.createElement(
1490
 
                            "annotation")
1491
 
                        ann_tag.setAttribute("name", name)
1492
 
                        ann_tag.setAttribute("value", value)
1493
 
                        tag.appendChild(ann_tag)
1494
729
                # Add the names to the return values for the
1495
730
                # "org.freedesktop.DBus.Properties" methods
1496
731
                if (if_tag.getAttribute("name")
1511
746
        except (AttributeError, xml.dom.DOMException,
1512
747
                xml.parsers.expat.ExpatError) as error:
1513
748
            logger.error("Failed to override Introspection method",
1514
 
                         exc_info=error)
1515
 
        return xmlstring
1516
 
 
1517
 
 
1518
 
try:
1519
 
    dbus.OBJECT_MANAGER_IFACE
1520
 
except AttributeError:
1521
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
 
 
1523
 
 
1524
 
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
 
    """A D-Bus object with an ObjectManager.
1526
 
 
1527
 
    Classes inheriting from this exposes the standard
1528
 
    GetManagedObjects call and the InterfacesAdded and
1529
 
    InterfacesRemoved signals on the standard
1530
 
    "org.freedesktop.DBus.ObjectManager" interface.
1531
 
 
1532
 
    Note: No signals are sent automatically; they must be sent
1533
 
    manually.
1534
 
    """
1535
 
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
 
                         out_signature="a{oa{sa{sv}}}")
1537
 
    def GetManagedObjects(self):
1538
 
        """This function must be overridden"""
1539
 
        raise NotImplementedError()
1540
 
 
1541
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
 
                         signature="oa{sa{sv}}")
1543
 
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
 
        pass
1545
 
 
1546
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
 
    def InterfacesRemoved(self, object_path, interfaces):
1548
 
        pass
1549
 
 
1550
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
 
                         out_signature="s",
1552
 
                         path_keyword='object_path',
1553
 
                         connection_keyword='connection')
1554
 
    def Introspect(self, object_path, connection):
1555
 
        """Overloading of standard D-Bus method.
1556
 
 
1557
 
        Override return argument name of GetManagedObjects to be
1558
 
        "objpath_interfaces_and_properties"
1559
 
        """
1560
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
 
                                                         object_path,
1562
 
                                                         connection)
1563
 
        try:
1564
 
            document = xml.dom.minidom.parseString(xmlstring)
1565
 
 
1566
 
            for if_tag in document.getElementsByTagName("interface"):
1567
 
                # Fix argument name for the GetManagedObjects method
1568
 
                if (if_tag.getAttribute("name")
1569
 
                    == dbus.OBJECT_MANAGER_IFACE):
1570
 
                    for cn in if_tag.getElementsByTagName("method"):
1571
 
                        if (cn.getAttribute("name")
1572
 
                            == "GetManagedObjects"):
1573
 
                            for arg in cn.getElementsByTagName("arg"):
1574
 
                                if (arg.getAttribute("direction")
1575
 
                                    == "out"):
1576
 
                                    arg.setAttribute(
1577
 
                                        "name",
1578
 
                                        "objpath_interfaces"
1579
 
                                        "_and_properties")
1580
 
            xmlstring = document.toxml("utf-8")
1581
 
            document.unlink()
1582
 
        except (AttributeError, xml.dom.DOMException,
1583
 
                xml.parsers.expat.ExpatError) as error:
1584
 
            logger.error("Failed to override Introspection method",
1585
 
                         exc_info=error)
1586
 
        return xmlstring
1587
 
 
1588
 
 
1589
 
def datetime_to_dbus(dt, variant_level=0):
 
749
                         error)
 
750
        return xmlstring
 
751
 
 
752
 
 
753
def datetime_to_dbus (dt, variant_level=0):
1590
754
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1591
755
    if dt is None:
1592
 
        return dbus.String("", variant_level=variant_level)
1593
 
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
 
 
1595
 
 
1596
 
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
 
    """A class decorator; applied to a subclass of
1598
 
    dbus.service.Object, it will add alternate D-Bus attributes with
1599
 
    interface names according to the "alt_interface_names" mapping.
1600
 
    Usage:
1601
 
 
1602
 
    @alternate_dbus_interfaces({"org.example.Interface":
1603
 
                                    "net.example.AlternateInterface"})
1604
 
    class SampleDBusObject(dbus.service.Object):
1605
 
        @dbus.service.method("org.example.Interface")
1606
 
        def SampleDBusMethod():
1607
 
            pass
1608
 
 
1609
 
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
 
    reachable via two interfaces: "org.example.Interface" and
1611
 
    "net.example.AlternateInterface", the latter of which will have
1612
 
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
 
    "true", unless "deprecate" is passed with a False value.
1614
 
 
1615
 
    This works for methods and signals, and also for D-Bus properties
1616
 
    (from DBusObjectWithProperties) and interfaces (from the
1617
 
    dbus_interface_annotations decorator).
1618
 
    """
1619
 
 
1620
 
    def wrapper(cls):
1621
 
        for orig_interface_name, alt_interface_name in (
1622
 
                alt_interface_names.items()):
1623
 
            attr = {}
1624
 
            interface_names = set()
1625
 
            # Go though all attributes of the class
1626
 
            for attrname, attribute in inspect.getmembers(cls):
1627
 
                # Ignore non-D-Bus attributes, and D-Bus attributes
1628
 
                # with the wrong interface name
1629
 
                if (not hasattr(attribute, "_dbus_interface")
1630
 
                    or not attribute._dbus_interface.startswith(
1631
 
                        orig_interface_name)):
1632
 
                    continue
1633
 
                # Create an alternate D-Bus interface name based on
1634
 
                # the current name
1635
 
                alt_interface = attribute._dbus_interface.replace(
1636
 
                    orig_interface_name, alt_interface_name)
1637
 
                interface_names.add(alt_interface)
1638
 
                # Is this a D-Bus signal?
1639
 
                if getattr(attribute, "_dbus_is_signal", False):
1640
 
                    # Extract the original non-method undecorated
1641
 
                    # function by black magic
1642
 
                    if sys.version_info.major == 2:
1643
 
                        nonmethod_func = (dict(
1644
 
                            zip(attribute.func_code.co_freevars,
1645
 
                                attribute.__closure__))
1646
 
                                          ["func"].cell_contents)
1647
 
                    else:
1648
 
                        nonmethod_func = (dict(
1649
 
                            zip(attribute.__code__.co_freevars,
1650
 
                                attribute.__closure__))
1651
 
                                          ["func"].cell_contents)
1652
 
                    # Create a new, but exactly alike, function
1653
 
                    # object, and decorate it to be a new D-Bus signal
1654
 
                    # with the alternate D-Bus interface name
1655
 
                    new_function = copy_function(nonmethod_func)
1656
 
                    new_function = (dbus.service.signal(
1657
 
                        alt_interface,
1658
 
                        attribute._dbus_signature)(new_function))
1659
 
                    # Copy annotations, if any
1660
 
                    try:
1661
 
                        new_function._dbus_annotations = dict(
1662
 
                            attribute._dbus_annotations)
1663
 
                    except AttributeError:
1664
 
                        pass
1665
 
 
1666
 
                    # Define a creator of a function to call both the
1667
 
                    # original and alternate functions, so both the
1668
 
                    # original and alternate signals gets sent when
1669
 
                    # the function is called
1670
 
                    def fixscope(func1, func2):
1671
 
                        """This function is a scope container to pass
1672
 
                        func1 and func2 to the "call_both" function
1673
 
                        outside of its arguments"""
1674
 
 
1675
 
                        @functools.wraps(func2)
1676
 
                        def call_both(*args, **kwargs):
1677
 
                            """This function will emit two D-Bus
1678
 
                            signals by calling func1 and func2"""
1679
 
                            func1(*args, **kwargs)
1680
 
                            func2(*args, **kwargs)
1681
 
                        # Make wrapper function look like a D-Bus
1682
 
                        # signal
1683
 
                        for name, attr in inspect.getmembers(func2):
1684
 
                            if name.startswith("_dbus_"):
1685
 
                                setattr(call_both, name, attr)
1686
 
 
1687
 
                        return call_both
1688
 
                    # Create the "call_both" function and add it to
1689
 
                    # the class
1690
 
                    attr[attrname] = fixscope(attribute, new_function)
1691
 
                # Is this a D-Bus method?
1692
 
                elif getattr(attribute, "_dbus_is_method", False):
1693
 
                    # Create a new, but exactly alike, function
1694
 
                    # object.  Decorate it to be a new D-Bus method
1695
 
                    # with the alternate D-Bus interface name.  Add it
1696
 
                    # to the class.
1697
 
                    attr[attrname] = (
1698
 
                        dbus.service.method(
1699
 
                            alt_interface,
1700
 
                            attribute._dbus_in_signature,
1701
 
                            attribute._dbus_out_signature)
1702
 
                        (copy_function(attribute)))
1703
 
                    # Copy annotations, if any
1704
 
                    try:
1705
 
                        attr[attrname]._dbus_annotations = dict(
1706
 
                            attribute._dbus_annotations)
1707
 
                    except AttributeError:
1708
 
                        pass
1709
 
                # Is this a D-Bus property?
1710
 
                elif getattr(attribute, "_dbus_is_property", False):
1711
 
                    # Create a new, but exactly alike, function
1712
 
                    # object, and decorate it to be a new D-Bus
1713
 
                    # property with the alternate D-Bus interface
1714
 
                    # name.  Add it to the class.
1715
 
                    attr[attrname] = (dbus_service_property(
1716
 
                        alt_interface, attribute._dbus_signature,
1717
 
                        attribute._dbus_access,
1718
 
                        attribute._dbus_get_args_options
1719
 
                        ["byte_arrays"])
1720
 
                                      (copy_function(attribute)))
1721
 
                    # Copy annotations, if any
1722
 
                    try:
1723
 
                        attr[attrname]._dbus_annotations = dict(
1724
 
                            attribute._dbus_annotations)
1725
 
                    except AttributeError:
1726
 
                        pass
1727
 
                # Is this a D-Bus interface?
1728
 
                elif getattr(attribute, "_dbus_is_interface", False):
1729
 
                    # Create a new, but exactly alike, function
1730
 
                    # object.  Decorate it to be a new D-Bus interface
1731
 
                    # with the alternate D-Bus interface name.  Add it
1732
 
                    # to the class.
1733
 
                    attr[attrname] = (
1734
 
                        dbus_interface_annotations(alt_interface)
1735
 
                        (copy_function(attribute)))
1736
 
            if deprecate:
1737
 
                # Deprecate all alternate interfaces
1738
 
                iname = "_AlternateDBusNames_interface_annotation{}"
1739
 
                for interface_name in interface_names:
1740
 
 
1741
 
                    @dbus_interface_annotations(interface_name)
1742
 
                    def func(self):
1743
 
                        return {"org.freedesktop.DBus.Deprecated":
1744
 
                                "true"}
1745
 
                    # Find an unused name
1746
 
                    for aname in (iname.format(i)
1747
 
                                  for i in itertools.count()):
1748
 
                        if aname not in attr:
1749
 
                            attr[aname] = func
1750
 
                            break
1751
 
            if interface_names:
1752
 
                # Replace the class with a new subclass of it with
1753
 
                # methods, signals, etc. as created above.
1754
 
                if sys.version_info.major == 2:
1755
 
                    cls = type(b"{}Alternate".format(cls.__name__),
1756
 
                               (cls, ), attr)
1757
 
                else:
1758
 
                    cls = type("{}Alternate".format(cls.__name__),
1759
 
                               (cls, ), attr)
1760
 
        return cls
1761
 
 
1762
 
    return wrapper
1763
 
 
1764
 
 
1765
 
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
 
                            "se.bsnet.fukt.Mandos"})
 
756
        return dbus.String("", variant_level = variant_level)
 
757
    return dbus.String(dt.isoformat(),
 
758
                       variant_level=variant_level)
 
759
 
1767
760
class ClientDBus(Client, DBusObjectWithProperties):
1768
761
    """A Client class using D-Bus
1769
 
 
 
762
    
1770
763
    Attributes:
1771
764
    dbus_object_path: dbus.ObjectPath
1772
765
    bus: dbus.SystemBus()
1773
766
    """
1774
 
 
 
767
    
1775
768
    runtime_expansions = (Client.runtime_expansions
1776
 
                          + ("dbus_object_path", ))
1777
 
 
1778
 
    _interface = "se.recompile.Mandos.Client"
1779
 
 
 
769
                          + ("dbus_object_path",))
 
770
    
1780
771
    # dbus.service.Object doesn't use super(), so we can't either.
1781
 
 
1782
 
    def __init__(self, bus=None, *args, **kwargs):
 
772
    
 
773
    def __init__(self, bus = None, *args, **kwargs):
 
774
        self._approvals_pending = 0
1783
775
        self.bus = bus
1784
776
        Client.__init__(self, *args, **kwargs)
1785
777
        # Only now, when this client is initialized, can it show up on
1786
778
        # the D-Bus
1787
 
        client_object_name = str(self.name).translate(
 
779
        client_object_name = unicode(self.name).translate(
1788
780
            {ord("."): ord("_"),
1789
781
             ord("-"): ord("_")})
1790
 
        self.dbus_object_path = dbus.ObjectPath(
1791
 
            "/clients/" + client_object_name)
 
782
        self.dbus_object_path = (dbus.ObjectPath
 
783
                                 ("/clients/" + client_object_name))
1792
784
        DBusObjectWithProperties.__init__(self, self.bus,
1793
785
                                          self.dbus_object_path)
1794
 
 
1795
 
    def notifychangeproperty(transform_func, dbus_name,
1796
 
                             type_func=lambda x: x,
1797
 
                             variant_level=1,
1798
 
                             invalidate_only=False,
1799
 
                             _interface=_interface):
1800
 
        """ Modify a variable so that it's a property which announces
1801
 
        its changes to DBus.
1802
 
 
1803
 
        transform_fun: Function that takes a value and a variant_level
1804
 
                       and transforms it to a D-Bus type.
1805
 
        dbus_name: D-Bus name of the variable
 
786
        
 
787
    def notifychangeproperty(transform_func,
 
788
                             dbus_name, type_func=lambda x: x,
 
789
                             variant_level=1):
 
790
        """ Modify a variable so that its a property that announce its
 
791
        changes to DBus.
 
792
        transform_fun: Function that takes a value and transform it to
 
793
                       DBus type.
 
794
        dbus_name: DBus name of the variable
1806
795
        type_func: Function that transform the value before sending it
1807
 
                   to the D-Bus.  Default: no transform
1808
 
        variant_level: D-Bus variant level.  Default: 1
 
796
                   to DBus
 
797
        variant_level: DBus variant level. default: 1
1809
798
        """
1810
 
        attrname = "_{}".format(dbus_name)
1811
 
 
 
799
        real_value = [None,]
1812
800
        def setter(self, value):
 
801
            old_value = real_value[0]
 
802
            real_value[0] = value
1813
803
            if hasattr(self, "dbus_object_path"):
1814
 
                if (not hasattr(self, attrname) or
1815
 
                    type_func(getattr(self, attrname, None))
1816
 
                    != type_func(value)):
1817
 
                    if invalidate_only:
1818
 
                        self.PropertiesChanged(
1819
 
                            _interface, dbus.Dictionary(),
1820
 
                            dbus.Array((dbus_name, )))
1821
 
                    else:
1822
 
                        dbus_value = transform_func(
1823
 
                            type_func(value),
1824
 
                            variant_level=variant_level)
1825
 
                        self.PropertyChanged(dbus.String(dbus_name),
1826
 
                                             dbus_value)
1827
 
                        self.PropertiesChanged(
1828
 
                            _interface,
1829
 
                            dbus.Dictionary({dbus.String(dbus_name):
1830
 
                                             dbus_value}),
1831
 
                            dbus.Array())
1832
 
            setattr(self, attrname, value)
1833
 
 
1834
 
        return property(lambda self: getattr(self, attrname), setter)
 
804
                if type_func(old_value) != type_func(real_value[0]):
 
805
                    dbus_value = transform_func(type_func(real_value[0]),
 
806
                                                variant_level)
 
807
                    self.PropertyChanged(dbus.String(dbus_name),
 
808
                                         dbus_value)
 
809
 
 
810
        return property(lambda self: real_value[0], setter)
 
811
 
1835
812
 
1836
813
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
814
    approvals_pending = notifychangeproperty(dbus.Boolean,
1838
815
                                             "ApprovalPending",
1839
 
                                             type_func=bool)
 
816
                                             type_func = bool)
1840
817
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
818
    last_enabled = notifychangeproperty(datetime_to_dbus,
1842
819
                                        "LastEnabled")
1843
 
    checker = notifychangeproperty(
1844
 
        dbus.Boolean, "CheckerRunning",
1845
 
        type_func=lambda checker: checker is not None)
 
820
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
 
821
                                   type_func = lambda checker: checker is not None)
1846
822
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
823
                                           "LastCheckedOK")
1848
 
    last_checker_status = notifychangeproperty(dbus.Int16,
1849
 
                                               "LastCheckerStatus")
1850
 
    last_approval_request = notifychangeproperty(
1851
 
        datetime_to_dbus, "LastApprovalRequest")
 
824
    last_approval_request = notifychangeproperty(datetime_to_dbus,
 
825
                                                 "LastApprovalRequest")
1852
826
    approved_by_default = notifychangeproperty(dbus.Boolean,
1853
827
                                               "ApprovedByDefault")
1854
 
    approval_delay = notifychangeproperty(
1855
 
        dbus.UInt64, "ApprovalDelay",
1856
 
        type_func=lambda td: td.total_seconds() * 1000)
1857
 
    approval_duration = notifychangeproperty(
1858
 
        dbus.UInt64, "ApprovalDuration",
1859
 
        type_func=lambda td: td.total_seconds() * 1000)
 
828
    approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
 
829
                                          type_func = _timedelta_to_milliseconds)
 
830
    approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
 
831
                                             type_func = _timedelta_to_milliseconds)
1860
832
    host = notifychangeproperty(dbus.String, "Host")
1861
 
    timeout = notifychangeproperty(
1862
 
        dbus.UInt64, "Timeout",
1863
 
        type_func=lambda td: td.total_seconds() * 1000)
1864
 
    extended_timeout = notifychangeproperty(
1865
 
        dbus.UInt64, "ExtendedTimeout",
1866
 
        type_func=lambda td: td.total_seconds() * 1000)
1867
 
    interval = notifychangeproperty(
1868
 
        dbus.UInt64, "Interval",
1869
 
        type_func=lambda td: td.total_seconds() * 1000)
 
833
    timeout = notifychangeproperty(dbus.UInt16, "Timeout",
 
834
                                   type_func = _timedelta_to_milliseconds)
 
835
    extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
 
836
                                            type_func = _timedelta_to_milliseconds)
 
837
    interval = notifychangeproperty(dbus.UInt16, "Interval",
 
838
                                    type_func = _timedelta_to_milliseconds)
1870
839
    checker_command = notifychangeproperty(dbus.String, "Checker")
1871
 
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
 
                                  invalidate_only=True)
1873
 
 
 
840
    
1874
841
    del notifychangeproperty
1875
 
 
 
842
    
1876
843
    def __del__(self, *args, **kwargs):
1877
844
        try:
1878
845
            self.remove_from_connection()
1881
848
        if hasattr(DBusObjectWithProperties, "__del__"):
1882
849
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1883
850
        Client.__del__(self, *args, **kwargs)
1884
 
 
1885
 
    def checker_callback(self, source, condition,
1886
 
                         connection, command, *args, **kwargs):
1887
 
        ret = Client.checker_callback(self, source, condition,
1888
 
                                      connection, command, *args,
1889
 
                                      **kwargs)
1890
 
        exitstatus = self.last_checker_status
1891
 
        if exitstatus >= 0:
 
851
    
 
852
    def checker_callback(self, pid, condition, command,
 
853
                         *args, **kwargs):
 
854
        self.checker_callback_tag = None
 
855
        self.checker = None
 
856
        if os.WIFEXITED(condition):
 
857
            exitstatus = os.WEXITSTATUS(condition)
1892
858
            # Emit D-Bus signal
1893
859
            self.CheckerCompleted(dbus.Int16(exitstatus),
1894
 
                                  # This is specific to GNU libC
1895
 
                                  dbus.Int64(exitstatus << 8),
 
860
                                  dbus.Int64(condition),
1896
861
                                  dbus.String(command))
1897
862
        else:
1898
863
            # Emit D-Bus signal
1899
864
            self.CheckerCompleted(dbus.Int16(-1),
1900
 
                                  dbus.Int64(
1901
 
                                      # This is specific to GNU libC
1902
 
                                      (exitstatus << 8)
1903
 
                                      | self.last_checker_signal),
 
865
                                  dbus.Int64(condition),
1904
866
                                  dbus.String(command))
1905
 
        return ret
 
867
        
 
868
        return Client.checker_callback(self, pid, condition, command,
 
869
                                       *args, **kwargs)
1906
870
 
1907
871
    def start_checker(self, *args, **kwargs):
1908
 
        old_checker_pid = getattr(self.checker, "pid", None)
 
872
        old_checker = self.checker
 
873
        if self.checker is not None:
 
874
            old_checker_pid = self.checker.pid
 
875
        else:
 
876
            old_checker_pid = None
1909
877
        r = Client.start_checker(self, *args, **kwargs)
1910
878
        # Only if new checker process was started
1911
879
        if (self.checker is not None
1913
881
            # Emit D-Bus signal
1914
882
            self.CheckerStarted(self.current_checker_command)
1915
883
        return r
1916
 
 
 
884
    
1917
885
    def _reset_approved(self):
1918
 
        self.approved = None
 
886
        self._approved = None
1919
887
        return False
1920
 
 
 
888
    
1921
889
    def approve(self, value=True):
1922
 
        self.approved = value
1923
 
        GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
 
                             * 1000), self._reset_approved)
1925
890
        self.send_changedstate()
1926
 
 
1927
 
    #  D-Bus methods, signals & properties
1928
 
 
1929
 
    #  Interfaces
1930
 
 
1931
 
    #  Signals
1932
 
 
 
891
        self._approved = value
 
892
        gobject.timeout_add(_timedelta_to_milliseconds
 
893
                            (self.approval_duration),
 
894
                            self._reset_approved)
 
895
    
 
896
    
 
897
    ## D-Bus methods, signals & properties
 
898
    _interface = "se.bsnet.fukt.Mandos.Client"
 
899
    
 
900
    ## Signals
 
901
    
1933
902
    # CheckerCompleted - signal
1934
903
    @dbus.service.signal(_interface, signature="nxs")
1935
904
    def CheckerCompleted(self, exitcode, waitstatus, command):
1936
905
        "D-Bus signal"
1937
906
        pass
1938
 
 
 
907
    
1939
908
    # CheckerStarted - signal
1940
909
    @dbus.service.signal(_interface, signature="s")
1941
910
    def CheckerStarted(self, command):
1942
911
        "D-Bus signal"
1943
912
        pass
1944
 
 
 
913
    
1945
914
    # PropertyChanged - signal
1946
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
915
    @dbus.service.signal(_interface, signature="sv")
1948
916
    def PropertyChanged(self, property, value):
1949
917
        "D-Bus signal"
1950
918
        pass
1951
 
 
 
919
    
1952
920
    # GotSecret - signal
1953
921
    @dbus.service.signal(_interface)
1954
922
    def GotSecret(self):
1957
925
        server to mandos-client
1958
926
        """
1959
927
        pass
1960
 
 
 
928
    
1961
929
    # Rejected - signal
1962
930
    @dbus.service.signal(_interface, signature="s")
1963
931
    def Rejected(self, reason):
1964
932
        "D-Bus signal"
1965
933
        pass
1966
 
 
 
934
    
1967
935
    # NeedApproval - signal
1968
936
    @dbus.service.signal(_interface, signature="tb")
1969
937
    def NeedApproval(self, timeout, default):
1970
938
        "D-Bus signal"
1971
939
        return self.need_approval()
1972
 
 
1973
 
    #  Methods
1974
 
 
 
940
    
 
941
    ## Methods
 
942
    
1975
943
    # Approve - method
1976
944
    @dbus.service.method(_interface, in_signature="b")
1977
945
    def Approve(self, value):
1978
946
        self.approve(value)
1979
 
 
 
947
    
1980
948
    # CheckedOK - method
1981
949
    @dbus.service.method(_interface)
1982
950
    def CheckedOK(self):
1983
951
        self.checked_ok()
1984
 
 
 
952
    
1985
953
    # Enable - method
1986
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1987
954
    @dbus.service.method(_interface)
1988
955
    def Enable(self):
1989
956
        "D-Bus method"
1990
957
        self.enable()
1991
 
 
 
958
    
1992
959
    # StartChecker - method
1993
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1994
960
    @dbus.service.method(_interface)
1995
961
    def StartChecker(self):
1996
962
        "D-Bus method"
1997
963
        self.start_checker()
1998
 
 
 
964
    
1999
965
    # Disable - method
2000
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
966
    @dbus.service.method(_interface)
2002
967
    def Disable(self):
2003
968
        "D-Bus method"
2004
969
        self.disable()
2005
 
 
 
970
    
2006
971
    # StopChecker - method
2007
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
972
    @dbus.service.method(_interface)
2009
973
    def StopChecker(self):
2010
974
        self.stop_checker()
2011
 
 
2012
 
    #  Properties
2013
 
 
 
975
    
 
976
    ## Properties
 
977
    
2014
978
    # ApprovalPending - property
2015
979
    @dbus_service_property(_interface, signature="b", access="read")
2016
980
    def ApprovalPending_dbus_property(self):
2017
981
        return dbus.Boolean(bool(self.approvals_pending))
2018
 
 
 
982
    
2019
983
    # ApprovedByDefault - property
2020
 
    @dbus_service_property(_interface,
2021
 
                           signature="b",
 
984
    @dbus_service_property(_interface, signature="b",
2022
985
                           access="readwrite")
2023
986
    def ApprovedByDefault_dbus_property(self, value=None):
2024
987
        if value is None:       # get
2025
988
            return dbus.Boolean(self.approved_by_default)
2026
989
        self.approved_by_default = bool(value)
2027
 
 
 
990
    
2028
991
    # ApprovalDelay - property
2029
 
    @dbus_service_property(_interface,
2030
 
                           signature="t",
 
992
    @dbus_service_property(_interface, signature="t",
2031
993
                           access="readwrite")
2032
994
    def ApprovalDelay_dbus_property(self, value=None):
2033
995
        if value is None:       # get
2034
 
            return dbus.UInt64(self.approval_delay.total_seconds()
2035
 
                               * 1000)
 
996
            return dbus.UInt64(self.approval_delay_milliseconds())
2036
997
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
2037
 
 
 
998
    
2038
999
    # ApprovalDuration - property
2039
 
    @dbus_service_property(_interface,
2040
 
                           signature="t",
 
1000
    @dbus_service_property(_interface, signature="t",
2041
1001
                           access="readwrite")
2042
1002
    def ApprovalDuration_dbus_property(self, value=None):
2043
1003
        if value is None:       # get
2044
 
            return dbus.UInt64(self.approval_duration.total_seconds()
2045
 
                               * 1000)
 
1004
            return dbus.UInt64(_timedelta_to_milliseconds(
 
1005
                    self.approval_duration))
2046
1006
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
2047
 
 
 
1007
    
2048
1008
    # Name - property
2049
 
    @dbus_annotations(
2050
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
1009
    @dbus_service_property(_interface, signature="s", access="read")
2052
1010
    def Name_dbus_property(self):
2053
1011
        return dbus.String(self.name)
2054
 
 
2055
 
    # KeyID - property
2056
 
    @dbus_annotations(
2057
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
 
    @dbus_service_property(_interface, signature="s", access="read")
2059
 
    def KeyID_dbus_property(self):
2060
 
        return dbus.String(self.key_id)
2061
 
 
 
1012
    
2062
1013
    # Fingerprint - property
2063
 
    @dbus_annotations(
2064
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
1014
    @dbus_service_property(_interface, signature="s", access="read")
2066
1015
    def Fingerprint_dbus_property(self):
2067
1016
        return dbus.String(self.fingerprint)
2068
 
 
 
1017
    
2069
1018
    # Host - property
2070
 
    @dbus_service_property(_interface,
2071
 
                           signature="s",
 
1019
    @dbus_service_property(_interface, signature="s",
2072
1020
                           access="readwrite")
2073
1021
    def Host_dbus_property(self, value=None):
2074
1022
        if value is None:       # get
2075
1023
            return dbus.String(self.host)
2076
 
        self.host = str(value)
2077
 
 
 
1024
        self.host = value
 
1025
    
2078
1026
    # Created - property
2079
 
    @dbus_annotations(
2080
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
1027
    @dbus_service_property(_interface, signature="s", access="read")
2082
1028
    def Created_dbus_property(self):
2083
 
        return datetime_to_dbus(self.created)
2084
 
 
 
1029
        return dbus.String(datetime_to_dbus(self.created))
 
1030
    
2085
1031
    # LastEnabled - property
2086
1032
    @dbus_service_property(_interface, signature="s", access="read")
2087
1033
    def LastEnabled_dbus_property(self):
2088
1034
        return datetime_to_dbus(self.last_enabled)
2089
 
 
 
1035
    
2090
1036
    # Enabled - property
2091
 
    @dbus_service_property(_interface,
2092
 
                           signature="b",
 
1037
    @dbus_service_property(_interface, signature="b",
2093
1038
                           access="readwrite")
2094
1039
    def Enabled_dbus_property(self, value=None):
2095
1040
        if value is None:       # get
2098
1043
            self.enable()
2099
1044
        else:
2100
1045
            self.disable()
2101
 
 
 
1046
    
2102
1047
    # LastCheckedOK - property
2103
 
    @dbus_service_property(_interface,
2104
 
                           signature="s",
 
1048
    @dbus_service_property(_interface, signature="s",
2105
1049
                           access="readwrite")
2106
1050
    def LastCheckedOK_dbus_property(self, value=None):
2107
1051
        if value is not None:
2108
1052
            self.checked_ok()
2109
1053
            return
2110
1054
        return datetime_to_dbus(self.last_checked_ok)
2111
 
 
2112
 
    # LastCheckerStatus - property
2113
 
    @dbus_service_property(_interface, signature="n", access="read")
2114
 
    def LastCheckerStatus_dbus_property(self):
2115
 
        return dbus.Int16(self.last_checker_status)
2116
 
 
 
1055
    
2117
1056
    # Expires - property
2118
1057
    @dbus_service_property(_interface, signature="s", access="read")
2119
1058
    def Expires_dbus_property(self):
2120
1059
        return datetime_to_dbus(self.expires)
2121
 
 
 
1060
    
2122
1061
    # LastApprovalRequest - property
2123
1062
    @dbus_service_property(_interface, signature="s", access="read")
2124
1063
    def LastApprovalRequest_dbus_property(self):
2125
1064
        return datetime_to_dbus(self.last_approval_request)
2126
 
 
 
1065
    
2127
1066
    # Timeout - property
2128
 
    @dbus_service_property(_interface,
2129
 
                           signature="t",
 
1067
    @dbus_service_property(_interface, signature="t",
2130
1068
                           access="readwrite")
2131
1069
    def Timeout_dbus_property(self, value=None):
2132
1070
        if value is None:       # get
2133
 
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
 
        old_timeout = self.timeout
 
1071
            return dbus.UInt64(self.timeout_milliseconds())
2135
1072
        self.timeout = datetime.timedelta(0, 0, 0, value)
2136
 
        # Reschedule disabling
2137
 
        if self.enabled:
2138
 
            now = datetime.datetime.utcnow()
2139
 
            self.expires += self.timeout - old_timeout
2140
 
            if self.expires <= now:
2141
 
                # The timeout has passed
2142
 
                self.disable()
2143
 
            else:
2144
 
                if (getattr(self, "disable_initiator_tag", None)
2145
 
                    is None):
2146
 
                    return
2147
 
                GLib.source_remove(self.disable_initiator_tag)
2148
 
                self.disable_initiator_tag = GLib.timeout_add(
2149
 
                    int((self.expires - now).total_seconds() * 1000),
2150
 
                    self.disable)
 
1073
        if getattr(self, "disable_initiator_tag", None) is None:
 
1074
            return
 
1075
        # Reschedule timeout
 
1076
        gobject.source_remove(self.disable_initiator_tag)
 
1077
        self.disable_initiator_tag = None
 
1078
        self.expires = None
 
1079
        time_to_die = (self.
 
1080
                       _timedelta_to_milliseconds((self
 
1081
                                                   .last_checked_ok
 
1082
                                                   + self.timeout)
 
1083
                                                  - datetime.datetime
 
1084
                                                  .utcnow()))
 
1085
        if time_to_die <= 0:
 
1086
            # The timeout has passed
 
1087
            self.disable()
 
1088
        else:
 
1089
            self.expires = (datetime.datetime.utcnow()
 
1090
                            + datetime.timedelta(milliseconds = time_to_die))
 
1091
            self.disable_initiator_tag = (gobject.timeout_add
 
1092
                                          (time_to_die, self.disable))
2151
1093
 
2152
1094
    # ExtendedTimeout - property
2153
 
    @dbus_service_property(_interface,
2154
 
                           signature="t",
 
1095
    @dbus_service_property(_interface, signature="t",
2155
1096
                           access="readwrite")
2156
1097
    def ExtendedTimeout_dbus_property(self, value=None):
2157
1098
        if value is None:       # get
2158
 
            return dbus.UInt64(self.extended_timeout.total_seconds()
2159
 
                               * 1000)
 
1099
            return dbus.UInt64(self.extended_timeout_milliseconds())
2160
1100
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
1101
 
2162
1102
    # Interval - property
2163
 
    @dbus_service_property(_interface,
2164
 
                           signature="t",
 
1103
    @dbus_service_property(_interface, signature="t",
2165
1104
                           access="readwrite")
2166
1105
    def Interval_dbus_property(self, value=None):
2167
1106
        if value is None:       # get
2168
 
            return dbus.UInt64(self.interval.total_seconds() * 1000)
 
1107
            return dbus.UInt64(self.interval_milliseconds())
2169
1108
        self.interval = datetime.timedelta(0, 0, 0, value)
2170
1109
        if getattr(self, "checker_initiator_tag", None) is None:
2171
1110
            return
2172
 
        if self.enabled:
2173
 
            # Reschedule checker run
2174
 
            GLib.source_remove(self.checker_initiator_tag)
2175
 
            self.checker_initiator_tag = GLib.timeout_add(
2176
 
                value, self.start_checker)
2177
 
            self.start_checker()  # Start one now, too
 
1111
        # Reschedule checker run
 
1112
        gobject.source_remove(self.checker_initiator_tag)
 
1113
        self.checker_initiator_tag = (gobject.timeout_add
 
1114
                                      (value, self.start_checker))
 
1115
        self.start_checker()    # Start one now, too
2178
1116
 
2179
1117
    # Checker - property
2180
 
    @dbus_service_property(_interface,
2181
 
                           signature="s",
 
1118
    @dbus_service_property(_interface, signature="s",
2182
1119
                           access="readwrite")
2183
1120
    def Checker_dbus_property(self, value=None):
2184
1121
        if value is None:       # get
2185
1122
            return dbus.String(self.checker_command)
2186
 
        self.checker_command = str(value)
2187
 
 
 
1123
        self.checker_command = value
 
1124
    
2188
1125
    # CheckerRunning - property
2189
 
    @dbus_service_property(_interface,
2190
 
                           signature="b",
 
1126
    @dbus_service_property(_interface, signature="b",
2191
1127
                           access="readwrite")
2192
1128
    def CheckerRunning_dbus_property(self, value=None):
2193
1129
        if value is None:       # get
2196
1132
            self.start_checker()
2197
1133
        else:
2198
1134
            self.stop_checker()
2199
 
 
 
1135
    
2200
1136
    # ObjectPath - property
2201
 
    @dbus_annotations(
2202
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
 
         "org.freedesktop.DBus.Deprecated": "true"})
2204
1137
    @dbus_service_property(_interface, signature="o", access="read")
2205
1138
    def ObjectPath_dbus_property(self):
2206
 
        return self.dbus_object_path  # is already a dbus.ObjectPath
2207
 
 
 
1139
        return self.dbus_object_path # is already a dbus.ObjectPath
 
1140
    
2208
1141
    # Secret = property
2209
 
    @dbus_annotations(
2210
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
 
         "invalidates"})
2212
 
    @dbus_service_property(_interface,
2213
 
                           signature="ay",
2214
 
                           access="write",
2215
 
                           byte_arrays=True)
 
1142
    @dbus_service_property(_interface, signature="ay",
 
1143
                           access="write", byte_arrays=True)
2216
1144
    def Secret_dbus_property(self, value):
2217
 
        self.secret = bytes(value)
2218
 
 
 
1145
        self.secret = str(value)
 
1146
    
2219
1147
    del _interface
2220
1148
 
2221
1149
 
2222
1150
class ProxyClient(object):
2223
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
1151
    def __init__(self, child_pipe, fpr, address):
2224
1152
        self._pipe = child_pipe
2225
 
        self._pipe.send(('init', key_id, fpr, address))
 
1153
        self._pipe.send(('init', fpr, address))
2226
1154
        if not self._pipe.recv():
2227
 
            raise KeyError(key_id or fpr)
 
1155
            raise KeyError()
2228
1156
 
2229
1157
    def __getattribute__(self, name):
2230
 
        if name == '_pipe':
 
1158
        if(name == '_pipe'):
2231
1159
            return super(ProxyClient, self).__getattribute__(name)
2232
1160
        self._pipe.send(('getattr', name))
2233
1161
        data = self._pipe.recv()
2234
1162
        if data[0] == 'data':
2235
1163
            return data[1]
2236
1164
        if data[0] == 'function':
2237
 
 
2238
1165
            def func(*args, **kwargs):
2239
1166
                self._pipe.send(('funcall', name, args, kwargs))
2240
1167
                return self._pipe.recv()[1]
2241
 
 
2242
1168
            return func
2243
1169
 
2244
1170
    def __setattr__(self, name, value):
2245
 
        if name == '_pipe':
 
1171
        if(name == '_pipe'):
2246
1172
            return super(ProxyClient, self).__setattr__(name, value)
2247
1173
        self._pipe.send(('setattr', name, value))
2248
1174
 
2249
1175
 
2250
1176
class ClientHandler(socketserver.BaseRequestHandler, object):
2251
1177
    """A class to handle client connections.
2252
 
 
 
1178
    
2253
1179
    Instantiated once for each connection to handle it.
2254
1180
    Note: This will run in its own forked process."""
2255
 
 
 
1181
    
2256
1182
    def handle(self):
2257
1183
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2258
1184
            logger.info("TCP connection from: %s",
2259
 
                        str(self.client_address))
 
1185
                        unicode(self.client_address))
2260
1186
            logger.debug("Pipe FD: %d",
2261
1187
                         self.server.child_pipe.fileno())
2262
1188
 
2263
 
            session = gnutls.ClientSession(self.request)
2264
 
 
2265
 
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
 
            #                       "+AES-256-CBC", "+SHA1",
2267
 
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
2268
 
            #                       "+DHE-DSS"))
 
1189
            session = (gnutls.connection
 
1190
                       .ClientSession(self.request,
 
1191
                                      gnutls.connection
 
1192
                                      .X509Credentials()))
 
1193
 
 
1194
            # Note: gnutls.connection.X509Credentials is really a
 
1195
            # generic GnuTLS certificate credentials object so long as
 
1196
            # no X.509 keys are added to it.  Therefore, we can use it
 
1197
            # here despite using OpenPGP certificates.
 
1198
 
 
1199
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
1200
            #                      "+AES-256-CBC", "+SHA1",
 
1201
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
1202
            #                      "+DHE-DSS"))
2269
1203
            # Use a fallback default, since this MUST be set.
2270
1204
            priority = self.server.gnutls_priority
2271
1205
            if priority is None:
2272
1206
                priority = "NORMAL"
2273
 
            gnutls.priority_set_direct(session._c_object,
2274
 
                                       priority.encode("utf-8"),
2275
 
                                       None)
 
1207
            (gnutls.library.functions
 
1208
             .gnutls_priority_set_direct(session._c_object,
 
1209
                                         priority, None))
2276
1210
 
2277
1211
            # Start communication using the Mandos protocol
2278
1212
            # Get protocol number
2280
1214
            logger.debug("Protocol version: %r", line)
2281
1215
            try:
2282
1216
                if int(line.strip().split()[0]) > 1:
2283
 
                    raise RuntimeError(line)
 
1217
                    raise RuntimeError
2284
1218
            except (ValueError, IndexError, RuntimeError) as error:
2285
1219
                logger.error("Unknown protocol version: %s", error)
2286
1220
                return
2288
1222
            # Start GnuTLS connection
2289
1223
            try:
2290
1224
                session.handshake()
2291
 
            except gnutls.Error as error:
 
1225
            except gnutls.errors.GNUTLSError as error:
2292
1226
                logger.warning("Handshake failed: %s", error)
2293
1227
                # Do not run session.bye() here: the session is not
2294
1228
                # established.  Just abandon the request.
2297
1231
 
2298
1232
            approval_required = False
2299
1233
            try:
2300
 
                if gnutls.has_rawpk:
2301
 
                    fpr = ""
2302
 
                    try:
2303
 
                        key_id = self.key_id(
2304
 
                            self.peer_certificate(session))
2305
 
                    except (TypeError, gnutls.Error) as error:
2306
 
                        logger.warning("Bad certificate: %s", error)
2307
 
                        return
2308
 
                    logger.debug("Key ID: %s", key_id)
2309
 
 
2310
 
                else:
2311
 
                    key_id = ""
2312
 
                    try:
2313
 
                        fpr = self.fingerprint(
2314
 
                            self.peer_certificate(session))
2315
 
                    except (TypeError, gnutls.Error) as error:
2316
 
                        logger.warning("Bad certificate: %s", error)
2317
 
                        return
2318
 
                    logger.debug("Fingerprint: %s", fpr)
2319
 
 
2320
 
                try:
2321
 
                    client = ProxyClient(child_pipe, key_id, fpr,
 
1234
                try:
 
1235
                    fpr = self.fingerprint(self.peer_certificate
 
1236
                                           (session))
 
1237
                except (TypeError,
 
1238
                        gnutls.errors.GNUTLSError) as error:
 
1239
                    logger.warning("Bad certificate: %s", error)
 
1240
                    return
 
1241
                logger.debug("Fingerprint: %s", fpr)
 
1242
 
 
1243
                try:
 
1244
                    client = ProxyClient(child_pipe, fpr,
2322
1245
                                         self.client_address)
2323
1246
                except KeyError:
2324
1247
                    return
2325
 
 
 
1248
                
2326
1249
                if client.approval_delay:
2327
1250
                    delay = client.approval_delay
2328
1251
                    client.approvals_pending += 1
2329
1252
                    approval_required = True
2330
 
 
 
1253
                
2331
1254
                while True:
2332
1255
                    if not client.enabled:
2333
1256
                        logger.info("Client %s is disabled",
2334
 
                                    client.name)
 
1257
                                       client.name)
2335
1258
                        if self.server.use_dbus:
2336
1259
                            # Emit D-Bus signal
2337
 
                            client.Rejected("Disabled")
 
1260
                            client.Rejected("Disabled")                    
2338
1261
                        return
2339
 
 
2340
 
                    if client.approved or not client.approval_delay:
2341
 
                        # We are approved or approval is disabled
 
1262
                    
 
1263
                    if client._approved or not client.approval_delay:
 
1264
                        #We are approved or approval is disabled
2342
1265
                        break
2343
 
                    elif client.approved is None:
 
1266
                    elif client._approved is None:
2344
1267
                        logger.info("Client %s needs approval",
2345
1268
                                    client.name)
2346
1269
                        if self.server.use_dbus:
2347
1270
                            # Emit D-Bus signal
2348
1271
                            client.NeedApproval(
2349
 
                                client.approval_delay.total_seconds()
2350
 
                                * 1000, client.approved_by_default)
 
1272
                                client.approval_delay_milliseconds(),
 
1273
                                client.approved_by_default)
2351
1274
                    else:
2352
1275
                        logger.warning("Client %s was not approved",
2353
1276
                                       client.name)
2355
1278
                            # Emit D-Bus signal
2356
1279
                            client.Rejected("Denied")
2357
1280
                        return
2358
 
 
2359
 
                    # wait until timeout or approved
 
1281
                    
 
1282
                    #wait until timeout or approved
 
1283
                    #x = float(client._timedelta_to_milliseconds(delay))
2360
1284
                    time = datetime.datetime.now()
2361
1285
                    client.changedstate.acquire()
2362
 
                    client.changedstate.wait(delay.total_seconds())
 
1286
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2363
1287
                    client.changedstate.release()
2364
1288
                    time2 = datetime.datetime.now()
2365
1289
                    if (time2 - time) >= delay:
2375
1299
                            break
2376
1300
                    else:
2377
1301
                        delay -= time2 - time
2378
 
 
2379
 
                try:
2380
 
                    session.send(client.secret)
2381
 
                except gnutls.Error as error:
2382
 
                    logger.warning("gnutls send failed",
2383
 
                                   exc_info=error)
2384
 
                    return
 
1302
                
 
1303
                sent_size = 0
 
1304
                while sent_size < len(client.secret):
 
1305
                    try:
 
1306
                        sent = session.send(client.secret[sent_size:])
 
1307
                    except gnutls.errors.GNUTLSError as error:
 
1308
                        logger.warning("gnutls send failed")
 
1309
                        return
 
1310
                    logger.debug("Sent: %d, remaining: %d",
 
1311
                                 sent, len(client.secret)
 
1312
                                 - (sent_size + sent))
 
1313
                    sent_size += sent
2385
1314
 
2386
1315
                logger.info("Sending secret to %s", client.name)
2387
 
                # bump the timeout using extended_timeout
2388
 
                client.bump_timeout(client.extended_timeout)
 
1316
                # bump the timeout as if seen
 
1317
                client.checked_ok(client.extended_timeout)
2389
1318
                if self.server.use_dbus:
2390
1319
                    # Emit D-Bus signal
2391
1320
                    client.GotSecret()
2392
 
 
 
1321
            
2393
1322
            finally:
2394
1323
                if approval_required:
2395
1324
                    client.approvals_pending -= 1
2396
1325
                try:
2397
1326
                    session.bye()
2398
 
                except gnutls.Error as error:
2399
 
                    logger.warning("GnuTLS bye failed",
2400
 
                                   exc_info=error)
2401
 
 
 
1327
                except gnutls.errors.GNUTLSError as error:
 
1328
                    logger.warning("GnuTLS bye failed")
 
1329
    
2402
1330
    @staticmethod
2403
1331
    def peer_certificate(session):
2404
 
        "Return the peer's certificate as a bytestring"
2405
 
        try:
2406
 
            cert_type = gnutls.certificate_type_get2(session._c_object,
2407
 
                                                     gnutls.CTYPE_PEERS)
2408
 
        except AttributeError:
2409
 
            cert_type = gnutls.certificate_type_get(session._c_object)
2410
 
        if gnutls.has_rawpk:
2411
 
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
 
        else:
2413
 
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
 
        # If not a valid certificate type...
2415
 
        if cert_type not in valid_cert_types:
2416
 
            logger.info("Cert type %r not in %r", cert_type,
2417
 
                        valid_cert_types)
2418
 
            # ...return invalid data
2419
 
            return b""
 
1332
        "Return the peer's OpenPGP certificate as a bytestring"
 
1333
        # If not an OpenPGP certificate...
 
1334
        if (gnutls.library.functions
 
1335
            .gnutls_certificate_type_get(session._c_object)
 
1336
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
1337
            # ...do the normal thing
 
1338
            return session.peer_certificate
2420
1339
        list_size = ctypes.c_uint(1)
2421
 
        cert_list = (gnutls.certificate_get_peers
 
1340
        cert_list = (gnutls.library.functions
 
1341
                     .gnutls_certificate_get_peers
2422
1342
                     (session._c_object, ctypes.byref(list_size)))
2423
1343
        if not bool(cert_list) and list_size.value != 0:
2424
 
            raise gnutls.Error("error getting peer certificate")
 
1344
            raise gnutls.errors.GNUTLSError("error getting peer"
 
1345
                                            " certificate")
2425
1346
        if list_size.value == 0:
2426
1347
            return None
2427
1348
        cert = cert_list[0]
2428
1349
        return ctypes.string_at(cert.data, cert.size)
2429
 
 
2430
 
    @staticmethod
2431
 
    def key_id(certificate):
2432
 
        "Convert a certificate bytestring to a hexdigit key ID"
2433
 
        # New GnuTLS "datum" with the public key
2434
 
        datum = gnutls.datum_t(
2435
 
            ctypes.cast(ctypes.c_char_p(certificate),
2436
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2437
 
            ctypes.c_uint(len(certificate)))
2438
 
        # XXX all these need to be created in the gnutls "module"
2439
 
        # New empty GnuTLS certificate
2440
 
        pubkey = gnutls.pubkey_t()
2441
 
        gnutls.pubkey_init(ctypes.byref(pubkey))
2442
 
        # Import the raw public key into the certificate
2443
 
        gnutls.pubkey_import(pubkey,
2444
 
                             ctypes.byref(datum),
2445
 
                             gnutls.X509_FMT_DER)
2446
 
        # New buffer for the key ID
2447
 
        buf = ctypes.create_string_buffer(32)
2448
 
        buf_len = ctypes.c_size_t(len(buf))
2449
 
        # Get the key ID from the raw public key into the buffer
2450
 
        gnutls.pubkey_get_key_id(pubkey,
2451
 
                                 gnutls.KEYID_USE_SHA256,
2452
 
                                 ctypes.cast(ctypes.byref(buf),
2453
 
                                             ctypes.POINTER(ctypes.c_ubyte)),
2454
 
                                 ctypes.byref(buf_len))
2455
 
        # Deinit the certificate
2456
 
        gnutls.pubkey_deinit(pubkey)
2457
 
 
2458
 
        # Convert the buffer to a Python bytestring
2459
 
        key_id = ctypes.string_at(buf, buf_len.value)
2460
 
        # Convert the bytestring to hexadecimal notation
2461
 
        hex_key_id = binascii.hexlify(key_id).upper()
2462
 
        return hex_key_id
2463
 
 
 
1350
    
2464
1351
    @staticmethod
2465
1352
    def fingerprint(openpgp):
2466
1353
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1354
        # New GnuTLS "datum" with the OpenPGP public key
2468
 
        datum = gnutls.datum_t(
2469
 
            ctypes.cast(ctypes.c_char_p(openpgp),
2470
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2471
 
            ctypes.c_uint(len(openpgp)))
 
1355
        datum = (gnutls.library.types
 
1356
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
 
1357
                                             ctypes.POINTER
 
1358
                                             (ctypes.c_ubyte)),
 
1359
                                 ctypes.c_uint(len(openpgp))))
2472
1360
        # New empty GnuTLS certificate
2473
 
        crt = gnutls.openpgp_crt_t()
2474
 
        gnutls.openpgp_crt_init(ctypes.byref(crt))
 
1361
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
 
1362
        (gnutls.library.functions
 
1363
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
2475
1364
        # Import the OpenPGP public key into the certificate
2476
 
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
 
                                  gnutls.OPENPGP_FMT_RAW)
 
1365
        (gnutls.library.functions
 
1366
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
 
1367
                                    gnutls.library.constants
 
1368
                                    .GNUTLS_OPENPGP_FMT_RAW))
2478
1369
        # Verify the self signature in the key
2479
1370
        crtverify = ctypes.c_uint()
2480
 
        gnutls.openpgp_crt_verify_self(crt, 0,
2481
 
                                       ctypes.byref(crtverify))
 
1371
        (gnutls.library.functions
 
1372
         .gnutls_openpgp_crt_verify_self(crt, 0,
 
1373
                                         ctypes.byref(crtverify)))
2482
1374
        if crtverify.value != 0:
2483
 
            gnutls.openpgp_crt_deinit(crt)
2484
 
            raise gnutls.CertificateSecurityError(code
2485
 
                                                  =crtverify.value)
 
1375
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
1376
            raise (gnutls.errors.CertificateSecurityError
 
1377
                   ("Verify failed"))
2486
1378
        # New buffer for the fingerprint
2487
1379
        buf = ctypes.create_string_buffer(20)
2488
1380
        buf_len = ctypes.c_size_t()
2489
1381
        # Get the fingerprint from the certificate into the buffer
2490
 
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
 
                                           ctypes.byref(buf_len))
 
1382
        (gnutls.library.functions
 
1383
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
1384
                                             ctypes.byref(buf_len)))
2492
1385
        # Deinit the certificate
2493
 
        gnutls.openpgp_crt_deinit(crt)
 
1386
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1387
        # Convert the buffer to a Python bytestring
2495
1388
        fpr = ctypes.string_at(buf, buf_len.value)
2496
1389
        # Convert the bytestring to hexadecimal notation
2497
 
        hex_fpr = binascii.hexlify(fpr).upper()
 
1390
        hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2498
1391
        return hex_fpr
2499
1392
 
2500
1393
 
2501
1394
class MultiprocessingMixIn(object):
2502
1395
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
 
 
2504
1396
    def sub_process_main(self, request, address):
2505
1397
        try:
2506
1398
            self.finish_request(request, address)
2507
 
        except Exception:
 
1399
        except:
2508
1400
            self.handle_error(request, address)
2509
1401
        self.close_request(request)
2510
 
 
 
1402
            
2511
1403
    def process_request(self, request, address):
2512
1404
        """Start a new process to process the request."""
2513
 
        proc = multiprocessing.Process(target=self.sub_process_main,
2514
 
                                       args=(request, address))
2515
 
        proc.start()
2516
 
        return proc
2517
 
 
 
1405
        multiprocessing.Process(target = self.sub_process_main,
 
1406
                                args = (request, address)).start()
2518
1407
 
2519
1408
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2520
1409
    """ adds a pipe to the MixIn """
2521
 
 
2522
1410
    def process_request(self, request, client_address):
2523
1411
        """Overrides and wraps the original process_request().
2524
 
 
 
1412
        
2525
1413
        This function creates a new pipe in self.pipe
2526
1414
        """
2527
1415
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2528
1416
 
2529
 
        proc = MultiprocessingMixIn.process_request(self, request,
2530
 
                                                    client_address)
 
1417
        super(MultiprocessingMixInWithPipe,
 
1418
              self).process_request(request, client_address)
2531
1419
        self.child_pipe.close()
2532
 
        self.add_pipe(parent_pipe, proc)
 
1420
        self.add_pipe(parent_pipe)
2533
1421
 
2534
 
    def add_pipe(self, parent_pipe, proc):
 
1422
    def add_pipe(self, parent_pipe):
2535
1423
        """Dummy function; override as necessary"""
2536
 
        raise NotImplementedError()
2537
 
 
 
1424
        raise NotImplementedError
2538
1425
 
2539
1426
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2540
1427
                     socketserver.TCPServer, object):
2541
1428
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2542
 
 
 
1429
    
2543
1430
    Attributes:
2544
1431
        enabled:        Boolean; whether this server is activated yet
2545
1432
        interface:      None or a network interface name (string)
2546
1433
        use_ipv6:       Boolean; to use IPv6 or not
2547
1434
    """
2548
 
 
2549
1435
    def __init__(self, server_address, RequestHandlerClass,
2550
 
                 interface=None,
2551
 
                 use_ipv6=True,
2552
 
                 socketfd=None):
2553
 
        """If socketfd is set, use that file descriptor instead of
2554
 
        creating a new one with socket.socket().
2555
 
        """
 
1436
                 interface=None, use_ipv6=True):
2556
1437
        self.interface = interface
2557
1438
        if use_ipv6:
2558
1439
            self.address_family = socket.AF_INET6
2559
 
        if socketfd is not None:
2560
 
            # Save the file descriptor
2561
 
            self.socketfd = socketfd
2562
 
            # Save the original socket.socket() function
2563
 
            self.socket_socket = socket.socket
2564
 
 
2565
 
            # To implement --socket, we monkey patch socket.socket.
2566
 
            #
2567
 
            # (When socketserver.TCPServer is a new-style class, we
2568
 
            # could make self.socket into a property instead of monkey
2569
 
            # patching socket.socket.)
2570
 
            #
2571
 
            # Create a one-time-only replacement for socket.socket()
2572
 
            @functools.wraps(socket.socket)
2573
 
            def socket_wrapper(*args, **kwargs):
2574
 
                # Restore original function so subsequent calls are
2575
 
                # not affected.
2576
 
                socket.socket = self.socket_socket
2577
 
                del self.socket_socket
2578
 
                # This time only, return a new socket object from the
2579
 
                # saved file descriptor.
2580
 
                return socket.fromfd(self.socketfd, *args, **kwargs)
2581
 
            # Replace socket.socket() function with wrapper
2582
 
            socket.socket = socket_wrapper
2583
 
        # The socketserver.TCPServer.__init__ will call
2584
 
        # socket.socket(), which might be our replacement,
2585
 
        # socket_wrapper(), if socketfd was set.
2586
1440
        socketserver.TCPServer.__init__(self, server_address,
2587
1441
                                        RequestHandlerClass)
2588
 
 
2589
1442
    def server_bind(self):
2590
1443
        """This overrides the normal server_bind() function
2591
1444
        to bind to an interface if one was specified, and also NOT to
2592
1445
        bind to an address or port if they were not specified."""
2593
 
        global SO_BINDTODEVICE
2594
1446
        if self.interface is not None:
2595
1447
            if SO_BINDTODEVICE is None:
2596
 
                # Fall back to a hard-coded value which seems to be
2597
 
                # common enough.
2598
 
                logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
 
                SO_BINDTODEVICE = 25
2600
 
            try:
2601
 
                self.socket.setsockopt(
2602
 
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
 
                    (self.interface + "\0").encode("utf-8"))
2604
 
            except socket.error as error:
2605
 
                if error.errno == errno.EPERM:
2606
 
                    logger.error("No permission to bind to"
2607
 
                                 " interface %s", self.interface)
2608
 
                elif error.errno == errno.ENOPROTOOPT:
2609
 
                    logger.error("SO_BINDTODEVICE not available;"
2610
 
                                 " cannot bind to interface %s",
2611
 
                                 self.interface)
2612
 
                elif error.errno == errno.ENODEV:
2613
 
                    logger.error("Interface %s does not exist,"
2614
 
                                 " cannot bind", self.interface)
2615
 
                else:
2616
 
                    raise
 
1448
                logger.error("SO_BINDTODEVICE does not exist;"
 
1449
                             " cannot bind to interface %s",
 
1450
                             self.interface)
 
1451
            else:
 
1452
                try:
 
1453
                    self.socket.setsockopt(socket.SOL_SOCKET,
 
1454
                                           SO_BINDTODEVICE,
 
1455
                                           str(self.interface
 
1456
                                               + '\0'))
 
1457
                except socket.error as error:
 
1458
                    if error[0] == errno.EPERM:
 
1459
                        logger.error("No permission to"
 
1460
                                     " bind to interface %s",
 
1461
                                     self.interface)
 
1462
                    elif error[0] == errno.ENOPROTOOPT:
 
1463
                        logger.error("SO_BINDTODEVICE not available;"
 
1464
                                     " cannot bind to interface %s",
 
1465
                                     self.interface)
 
1466
                    else:
 
1467
                        raise
2617
1468
        # Only bind(2) the socket if we really need to.
2618
1469
        if self.server_address[0] or self.server_address[1]:
2619
1470
            if not self.server_address[0]:
2620
1471
                if self.address_family == socket.AF_INET6:
2621
 
                    any_address = "::"  # in6addr_any
 
1472
                    any_address = "::" # in6addr_any
2622
1473
                else:
2623
 
                    any_address = "0.0.0.0"  # INADDR_ANY
 
1474
                    any_address = socket.INADDR_ANY
2624
1475
                self.server_address = (any_address,
2625
1476
                                       self.server_address[1])
2626
1477
            elif not self.server_address[1]:
2627
 
                self.server_address = (self.server_address[0], 0)
 
1478
                self.server_address = (self.server_address[0],
 
1479
                                       0)
2628
1480
#                 if self.interface:
2629
1481
#                     self.server_address = (self.server_address[0],
2630
1482
#                                            0, # port
2636
1488
 
2637
1489
class MandosServer(IPv6_TCPServer):
2638
1490
    """Mandos server.
2639
 
 
 
1491
    
2640
1492
    Attributes:
2641
1493
        clients:        set of Client objects
2642
1494
        gnutls_priority GnuTLS priority string
2643
1495
        use_dbus:       Boolean; to emit D-Bus signals or not
2644
 
 
2645
 
    Assumes a GLib.MainLoop event loop.
 
1496
    
 
1497
    Assumes a gobject.MainLoop event loop.
2646
1498
    """
2647
 
 
2648
1499
    def __init__(self, server_address, RequestHandlerClass,
2649
 
                 interface=None,
2650
 
                 use_ipv6=True,
2651
 
                 clients=None,
2652
 
                 gnutls_priority=None,
2653
 
                 use_dbus=True,
2654
 
                 socketfd=None):
 
1500
                 interface=None, use_ipv6=True, clients=None,
 
1501
                 gnutls_priority=None, use_dbus=True):
2655
1502
        self.enabled = False
2656
1503
        self.clients = clients
2657
1504
        if self.clients is None:
2658
 
            self.clients = {}
 
1505
            self.clients = set()
2659
1506
        self.use_dbus = use_dbus
2660
1507
        self.gnutls_priority = gnutls_priority
2661
1508
        IPv6_TCPServer.__init__(self, server_address,
2662
1509
                                RequestHandlerClass,
2663
 
                                interface=interface,
2664
 
                                use_ipv6=use_ipv6,
2665
 
                                socketfd=socketfd)
2666
 
 
 
1510
                                interface = interface,
 
1511
                                use_ipv6 = use_ipv6)
2667
1512
    def server_activate(self):
2668
1513
        if self.enabled:
2669
1514
            return socketserver.TCPServer.server_activate(self)
2670
 
 
2671
1515
    def enable(self):
2672
1516
        self.enabled = True
2673
 
 
2674
 
    def add_pipe(self, parent_pipe, proc):
 
1517
    def add_pipe(self, parent_pipe):
2675
1518
        # Call "handle_ipc" for both data and EOF events
2676
 
        GLib.io_add_watch(
2677
 
            parent_pipe.fileno(),
2678
 
            GLib.IO_IN | GLib.IO_HUP,
2679
 
            functools.partial(self.handle_ipc,
2680
 
                              parent_pipe=parent_pipe,
2681
 
                              proc=proc))
2682
 
 
2683
 
    def handle_ipc(self, source, condition,
2684
 
                   parent_pipe=None,
2685
 
                   proc=None,
 
1519
        gobject.io_add_watch(parent_pipe.fileno(),
 
1520
                             gobject.IO_IN | gobject.IO_HUP,
 
1521
                             functools.partial(self.handle_ipc,
 
1522
                                               parent_pipe = parent_pipe))
 
1523
        
 
1524
    def handle_ipc(self, source, condition, parent_pipe=None,
2686
1525
                   client_object=None):
2687
 
        # error, or the other end of multiprocessing.Pipe has closed
2688
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
2689
 
            # Wait for other process to exit
2690
 
            proc.join()
 
1526
        condition_names = {
 
1527
            gobject.IO_IN: "IN",   # There is data to read.
 
1528
            gobject.IO_OUT: "OUT", # Data can be written (without
 
1529
                                    # blocking).
 
1530
            gobject.IO_PRI: "PRI", # There is urgent data to read.
 
1531
            gobject.IO_ERR: "ERR", # Error condition.
 
1532
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
 
1533
                                    # broken, usually for pipes and
 
1534
                                    # sockets).
 
1535
            }
 
1536
        conditions_string = ' | '.join(name
 
1537
                                       for cond, name in
 
1538
                                       condition_names.iteritems()
 
1539
                                       if cond & condition)
 
1540
        # error or the other end of multiprocessing.Pipe has closed
 
1541
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2691
1542
            return False
2692
 
 
 
1543
        
2693
1544
        # Read a request from the child
2694
1545
        request = parent_pipe.recv()
2695
1546
        command = request[0]
2696
 
 
 
1547
        
2697
1548
        if command == 'init':
2698
 
            key_id = request[1].decode("ascii")
2699
 
            fpr = request[2].decode("ascii")
2700
 
            address = request[3]
2701
 
 
2702
 
            for c in self.clients.values():
2703
 
                if key_id and c.key_id == key_id:
2704
 
                    client = c
2705
 
                    break
2706
 
                if fpr and c.fingerprint == fpr:
 
1549
            fpr = request[1]
 
1550
            address = request[2]
 
1551
            
 
1552
            for c in self.clients:
 
1553
                if c.fingerprint == fpr:
2707
1554
                    client = c
2708
1555
                    break
2709
1556
            else:
2710
 
                logger.info("Client not found for key ID: %s, address"
2711
 
                            ": %s", key_id or fpr, address)
 
1557
                logger.info("Client not found for fingerprint: %s, ad"
 
1558
                            "dress: %s", fpr, address)
2712
1559
                if self.use_dbus:
2713
1560
                    # Emit D-Bus signal
2714
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
2715
 
                                                       address[0])
 
1561
                    mandos_dbus_service.ClientNotFound(fpr, address[0])
2716
1562
                parent_pipe.send(False)
2717
1563
                return False
2718
 
 
2719
 
            GLib.io_add_watch(
2720
 
                parent_pipe.fileno(),
2721
 
                GLib.IO_IN | GLib.IO_HUP,
2722
 
                functools.partial(self.handle_ipc,
2723
 
                                  parent_pipe=parent_pipe,
2724
 
                                  proc=proc,
2725
 
                                  client_object=client))
 
1564
            
 
1565
            gobject.io_add_watch(parent_pipe.fileno(),
 
1566
                                 gobject.IO_IN | gobject.IO_HUP,
 
1567
                                 functools.partial(self.handle_ipc,
 
1568
                                                   parent_pipe = parent_pipe,
 
1569
                                                   client_object = client))
2726
1570
            parent_pipe.send(True)
2727
 
            # remove the old hook in favor of the new above hook on
2728
 
            # same fileno
 
1571
            # remove the old hook in favor of the new above hook on same fileno
2729
1572
            return False
2730
1573
        if command == 'funcall':
2731
1574
            funcname = request[1]
2732
1575
            args = request[2]
2733
1576
            kwargs = request[3]
2734
 
 
2735
 
            parent_pipe.send(('data', getattr(client_object,
2736
 
                                              funcname)(*args,
2737
 
                                                        **kwargs)))
 
1577
            
 
1578
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2738
1579
 
2739
1580
        if command == 'getattr':
2740
1581
            attrname = request[1]
2741
 
            if isinstance(client_object.__getattribute__(attrname),
2742
 
                          collections.Callable):
2743
 
                parent_pipe.send(('function', ))
 
1582
            if callable(client_object.__getattribute__(attrname)):
 
1583
                parent_pipe.send(('function',))
2744
1584
            else:
2745
 
                parent_pipe.send((
2746
 
                    'data', client_object.__getattribute__(attrname)))
2747
 
 
 
1585
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
 
1586
        
2748
1587
        if command == 'setattr':
2749
1588
            attrname = request[1]
2750
1589
            value = request[2]
2753
1592
        return True
2754
1593
 
2755
1594
 
2756
 
def rfc3339_duration_to_delta(duration):
2757
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2758
 
 
2759
 
    >>> rfc3339_duration_to_delta("P7D")
2760
 
    datetime.timedelta(7)
2761
 
    >>> rfc3339_duration_to_delta("PT60S")
2762
 
    datetime.timedelta(0, 60)
2763
 
    >>> rfc3339_duration_to_delta("PT60M")
2764
 
    datetime.timedelta(0, 3600)
2765
 
    >>> rfc3339_duration_to_delta("PT24H")
2766
 
    datetime.timedelta(1)
2767
 
    >>> rfc3339_duration_to_delta("P1W")
2768
 
    datetime.timedelta(7)
2769
 
    >>> rfc3339_duration_to_delta("PT5M30S")
2770
 
    datetime.timedelta(0, 330)
2771
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2772
 
    datetime.timedelta(1, 200)
2773
 
    """
2774
 
 
2775
 
    # Parsing an RFC 3339 duration with regular expressions is not
2776
 
    # possible - there would have to be multiple places for the same
2777
 
    # values, like seconds.  The current code, while more esoteric, is
2778
 
    # cleaner without depending on a parsing library.  If Python had a
2779
 
    # built-in library for parsing we would use it, but we'd like to
2780
 
    # avoid excessive use of external libraries.
2781
 
 
2782
 
    # New type for defining tokens, syntax, and semantics all-in-one
2783
 
    Token = collections.namedtuple("Token", (
2784
 
        "regexp",  # To match token; if "value" is not None, must have
2785
 
                   # a "group" containing digits
2786
 
        "value",   # datetime.timedelta or None
2787
 
        "followers"))           # Tokens valid after this token
2788
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
2789
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
2790
 
    token_end = Token(re.compile(r"$"), None, frozenset())
2791
 
    token_second = Token(re.compile(r"(\d+)S"),
2792
 
                         datetime.timedelta(seconds=1),
2793
 
                         frozenset((token_end, )))
2794
 
    token_minute = Token(re.compile(r"(\d+)M"),
2795
 
                         datetime.timedelta(minutes=1),
2796
 
                         frozenset((token_second, token_end)))
2797
 
    token_hour = Token(re.compile(r"(\d+)H"),
2798
 
                       datetime.timedelta(hours=1),
2799
 
                       frozenset((token_minute, token_end)))
2800
 
    token_time = Token(re.compile(r"T"),
2801
 
                       None,
2802
 
                       frozenset((token_hour, token_minute,
2803
 
                                  token_second)))
2804
 
    token_day = Token(re.compile(r"(\d+)D"),
2805
 
                      datetime.timedelta(days=1),
2806
 
                      frozenset((token_time, token_end)))
2807
 
    token_month = Token(re.compile(r"(\d+)M"),
2808
 
                        datetime.timedelta(weeks=4),
2809
 
                        frozenset((token_day, token_end)))
2810
 
    token_year = Token(re.compile(r"(\d+)Y"),
2811
 
                       datetime.timedelta(weeks=52),
2812
 
                       frozenset((token_month, token_end)))
2813
 
    token_week = Token(re.compile(r"(\d+)W"),
2814
 
                       datetime.timedelta(weeks=1),
2815
 
                       frozenset((token_end, )))
2816
 
    token_duration = Token(re.compile(r"P"), None,
2817
 
                           frozenset((token_year, token_month,
2818
 
                                      token_day, token_time,
2819
 
                                      token_week)))
2820
 
    # Define starting values:
2821
 
    # Value so far
2822
 
    value = datetime.timedelta()
2823
 
    found_token = None
2824
 
    # Following valid tokens
2825
 
    followers = frozenset((token_duration, ))
2826
 
    # String left to parse
2827
 
    s = duration
2828
 
    # Loop until end token is found
2829
 
    while found_token is not token_end:
2830
 
        # Search for any currently valid tokens
2831
 
        for token in followers:
2832
 
            match = token.regexp.match(s)
2833
 
            if match is not None:
2834
 
                # Token found
2835
 
                if token.value is not None:
2836
 
                    # Value found, parse digits
2837
 
                    factor = int(match.group(1), 10)
2838
 
                    # Add to value so far
2839
 
                    value += factor * token.value
2840
 
                # Strip token from string
2841
 
                s = token.regexp.sub("", s, 1)
2842
 
                # Go to found token
2843
 
                found_token = token
2844
 
                # Set valid next tokens
2845
 
                followers = found_token.followers
2846
 
                break
2847
 
        else:
2848
 
            # No currently valid tokens were found
2849
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
2850
 
                             .format(duration))
2851
 
    # End token found
2852
 
    return value
2853
 
 
2854
 
 
2855
1595
def string_to_delta(interval):
2856
1596
    """Parse a string and return a datetime.timedelta
2857
 
 
 
1597
    
2858
1598
    >>> string_to_delta('7d')
2859
1599
    datetime.timedelta(7)
2860
1600
    >>> string_to_delta('60s')
2868
1608
    >>> string_to_delta('5m 30s')
2869
1609
    datetime.timedelta(0, 330)
2870
1610
    """
2871
 
 
2872
 
    try:
2873
 
        return rfc3339_duration_to_delta(interval)
2874
 
    except ValueError:
2875
 
        pass
2876
 
 
2877
1611
    timevalue = datetime.timedelta(0)
2878
1612
    for s in interval.split():
2879
1613
        try:
2880
 
            suffix = s[-1]
 
1614
            suffix = unicode(s[-1])
2881
1615
            value = int(s[:-1])
2882
1616
            if suffix == "d":
2883
1617
                delta = datetime.timedelta(value)
2890
1624
            elif suffix == "w":
2891
1625
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2892
1626
            else:
2893
 
                raise ValueError("Unknown suffix {!r}".format(suffix))
2894
 
        except IndexError as e:
 
1627
                raise ValueError("Unknown suffix %r" % suffix)
 
1628
        except (ValueError, IndexError) as e:
2895
1629
            raise ValueError(*(e.args))
2896
1630
        timevalue += delta
2897
1631
    return timevalue
2898
1632
 
2899
1633
 
2900
 
def daemon(nochdir=False, noclose=False):
 
1634
def if_nametoindex(interface):
 
1635
    """Call the C function if_nametoindex(), or equivalent
 
1636
    
 
1637
    Note: This function cannot accept a unicode string."""
 
1638
    global if_nametoindex
 
1639
    try:
 
1640
        if_nametoindex = (ctypes.cdll.LoadLibrary
 
1641
                          (ctypes.util.find_library("c"))
 
1642
                          .if_nametoindex)
 
1643
    except (OSError, AttributeError):
 
1644
        logger.warning("Doing if_nametoindex the hard way")
 
1645
        def if_nametoindex(interface):
 
1646
            "Get an interface index the hard way, i.e. using fcntl()"
 
1647
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
 
1648
            with contextlib.closing(socket.socket()) as s:
 
1649
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
1650
                                    struct.pack(str("16s16x"),
 
1651
                                                interface))
 
1652
            interface_index = struct.unpack(str("I"),
 
1653
                                            ifreq[16:20])[0]
 
1654
            return interface_index
 
1655
    return if_nametoindex(interface)
 
1656
 
 
1657
 
 
1658
def daemon(nochdir = False, noclose = False):
2901
1659
    """See daemon(3).  Standard BSD Unix function.
2902
 
 
 
1660
    
2903
1661
    This should really exist as os.daemon, but it doesn't (yet)."""
2904
1662
    if os.fork():
2905
1663
        sys.exit()
2910
1668
        sys.exit()
2911
1669
    if not noclose:
2912
1670
        # Close all standard open file descriptors
2913
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1671
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2914
1672
        if not stat.S_ISCHR(os.fstat(null).st_mode):
2915
1673
            raise OSError(errno.ENODEV,
2916
 
                          "{} not a character device"
2917
 
                          .format(os.devnull))
 
1674
                          "%s not a character device"
 
1675
                          % os.path.devnull)
2918
1676
        os.dup2(null, sys.stdin.fileno())
2919
1677
        os.dup2(null, sys.stdout.fileno())
2920
1678
        os.dup2(null, sys.stderr.fileno())
2923
1681
 
2924
1682
 
2925
1683
def main():
2926
 
 
 
1684
    
2927
1685
    ##################################################################
2928
1686
    # Parsing of options, both command line and config file
2929
 
 
 
1687
    
2930
1688
    parser = argparse.ArgumentParser()
2931
1689
    parser.add_argument("-v", "--version", action="version",
2932
 
                        version="%(prog)s {}".format(version),
 
1690
                        version = "%%(prog)s %s" % version,
2933
1691
                        help="show version number and exit")
2934
1692
    parser.add_argument("-i", "--interface", metavar="IF",
2935
1693
                        help="Bind to interface IF")
2941
1699
                        help="Run self-test")
2942
1700
    parser.add_argument("--debug", action="store_true",
2943
1701
                        help="Debug mode; run in foreground and log"
2944
 
                        " to terminal", default=None)
 
1702
                        " to terminal")
2945
1703
    parser.add_argument("--debuglevel", metavar="LEVEL",
2946
1704
                        help="Debug level for stdout output")
2947
1705
    parser.add_argument("--priority", help="GnuTLS"
2954
1712
                        " files")
2955
1713
    parser.add_argument("--no-dbus", action="store_false",
2956
1714
                        dest="use_dbus", help="Do not provide D-Bus"
2957
 
                        " system bus interface", default=None)
 
1715
                        " system bus interface")
2958
1716
    parser.add_argument("--no-ipv6", action="store_false",
2959
 
                        dest="use_ipv6", help="Do not use IPv6",
2960
 
                        default=None)
2961
 
    parser.add_argument("--no-restore", action="store_false",
2962
 
                        dest="restore", help="Do not restore stored"
2963
 
                        " state", default=None)
2964
 
    parser.add_argument("--socket", type=int,
2965
 
                        help="Specify a file descriptor to a network"
2966
 
                        " socket to use instead of creating one")
2967
 
    parser.add_argument("--statedir", metavar="DIR",
2968
 
                        help="Directory to save/restore state in")
2969
 
    parser.add_argument("--foreground", action="store_true",
2970
 
                        help="Run in foreground", default=None)
2971
 
    parser.add_argument("--no-zeroconf", action="store_false",
2972
 
                        dest="zeroconf", help="Do not use Zeroconf",
2973
 
                        default=None)
2974
 
 
 
1717
                        dest="use_ipv6", help="Do not use IPv6")
2975
1718
    options = parser.parse_args()
2976
 
 
 
1719
    
2977
1720
    if options.check:
2978
1721
        import doctest
2979
 
        fail_count, test_count = doctest.testmod()
2980
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
2981
 
 
 
1722
        doctest.testmod()
 
1723
        sys.exit()
 
1724
    
2982
1725
    # Default values for config file for server-global settings
2983
 
    if gnutls.has_rawpk:
2984
 
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2985
 
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2986
 
    else:
2987
 
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2988
 
                    ":+SIGN-DSA-SHA256")
2989
 
    server_defaults = {"interface": "",
2990
 
                       "address": "",
2991
 
                       "port": "",
2992
 
                       "debug": "False",
2993
 
                       "priority": priority,
2994
 
                       "servicename": "Mandos",
2995
 
                       "use_dbus": "True",
2996
 
                       "use_ipv6": "True",
2997
 
                       "debuglevel": "",
2998
 
                       "restore": "True",
2999
 
                       "socket": "",
3000
 
                       "statedir": "/var/lib/mandos",
3001
 
                       "foreground": "False",
3002
 
                       "zeroconf": "True",
3003
 
                       }
3004
 
    del priority
3005
 
 
 
1726
    server_defaults = { "interface": "",
 
1727
                        "address": "",
 
1728
                        "port": "",
 
1729
                        "debug": "False",
 
1730
                        "priority":
 
1731
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
 
1732
                        "servicename": "Mandos",
 
1733
                        "use_dbus": "True",
 
1734
                        "use_ipv6": "True",
 
1735
                        "debuglevel": "",
 
1736
                        }
 
1737
    
3006
1738
    # Parse config file for server-global settings
3007
1739
    server_config = configparser.SafeConfigParser(server_defaults)
3008
1740
    del server_defaults
3009
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
1741
    server_config.read(os.path.join(options.configdir,
 
1742
                                    "mandos.conf"))
3010
1743
    # Convert the SafeConfigParser object to a dict
3011
1744
    server_settings = server_config.defaults()
3012
1745
    # Use the appropriate methods on the non-string config options
3013
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3014
 
                   "foreground", "zeroconf"):
 
1746
    for option in ("debug", "use_dbus", "use_ipv6"):
3015
1747
        server_settings[option] = server_config.getboolean("DEFAULT",
3016
1748
                                                           option)
3017
1749
    if server_settings["port"]:
3018
1750
        server_settings["port"] = server_config.getint("DEFAULT",
3019
1751
                                                       "port")
3020
 
    if server_settings["socket"]:
3021
 
        server_settings["socket"] = server_config.getint("DEFAULT",
3022
 
                                                         "socket")
3023
 
        # Later, stdin will, and stdout and stderr might, be dup'ed
3024
 
        # over with an opened os.devnull.  But we don't want this to
3025
 
        # happen with a supplied network socket.
3026
 
        if 0 <= server_settings["socket"] <= 2:
3027
 
            server_settings["socket"] = os.dup(server_settings
3028
 
                                               ["socket"])
3029
1752
    del server_config
3030
 
 
 
1753
    
3031
1754
    # Override the settings from the config file with command line
3032
1755
    # options, if set.
3033
1756
    for option in ("interface", "address", "port", "debug",
3034
 
                   "priority", "servicename", "configdir", "use_dbus",
3035
 
                   "use_ipv6", "debuglevel", "restore", "statedir",
3036
 
                   "socket", "foreground", "zeroconf"):
 
1757
                   "priority", "servicename", "configdir",
 
1758
                   "use_dbus", "use_ipv6", "debuglevel"):
3037
1759
        value = getattr(options, option)
3038
1760
        if value is not None:
3039
1761
            server_settings[option] = value
3040
1762
    del options
3041
1763
    # Force all strings to be unicode
3042
1764
    for option in server_settings.keys():
3043
 
        if isinstance(server_settings[option], bytes):
3044
 
            server_settings[option] = (server_settings[option]
3045
 
                                       .decode("utf-8"))
3046
 
    # Force all boolean options to be boolean
3047
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3048
 
                   "foreground", "zeroconf"):
3049
 
        server_settings[option] = bool(server_settings[option])
3050
 
    # Debug implies foreground
3051
 
    if server_settings["debug"]:
3052
 
        server_settings["foreground"] = True
 
1765
        if type(server_settings[option]) is str:
 
1766
            server_settings[option] = unicode(server_settings[option])
3053
1767
    # Now we have our good server settings in "server_settings"
3054
 
 
 
1768
    
3055
1769
    ##################################################################
3056
 
 
3057
 
    if (not server_settings["zeroconf"]
3058
 
        and not (server_settings["port"]
3059
 
                 or server_settings["socket"] != "")):
3060
 
        parser.error("Needs port or socket to work without Zeroconf")
3061
 
 
 
1770
    
3062
1771
    # For convenience
3063
1772
    debug = server_settings["debug"]
3064
1773
    debuglevel = server_settings["debuglevel"]
3065
1774
    use_dbus = server_settings["use_dbus"]
3066
1775
    use_ipv6 = server_settings["use_ipv6"]
3067
 
    stored_state_path = os.path.join(server_settings["statedir"],
3068
 
                                     stored_state_file)
3069
 
    foreground = server_settings["foreground"]
3070
 
    zeroconf = server_settings["zeroconf"]
3071
 
 
3072
 
    if debug:
3073
 
        initlogger(debug, logging.DEBUG)
3074
 
    else:
3075
 
        if not debuglevel:
3076
 
            initlogger(debug)
3077
 
        else:
3078
 
            level = getattr(logging, debuglevel.upper())
3079
 
            initlogger(debug, level)
3080
1776
 
3081
1777
    if server_settings["servicename"] != "Mandos":
3082
 
        syslogger.setFormatter(
3083
 
            logging.Formatter('Mandos ({}) [%(process)d]:'
3084
 
                              ' %(levelname)s: %(message)s'.format(
3085
 
                                  server_settings["servicename"])))
3086
 
 
 
1778
        syslogger.setFormatter(logging.Formatter
 
1779
                               ('Mandos (%s) [%%(process)d]:'
 
1780
                                ' %%(levelname)s: %%(message)s'
 
1781
                                % server_settings["servicename"]))
 
1782
    
3087
1783
    # Parse config file with clients
3088
 
    client_config = configparser.SafeConfigParser(Client
3089
 
                                                  .client_defaults)
 
1784
    client_defaults = { "timeout": "5m",
 
1785
                        "extended_timeout": "15m",
 
1786
                        "interval": "2m",
 
1787
                        "checker": "fping -q -- %%(host)s",
 
1788
                        "host": "",
 
1789
                        "approval_delay": "0s",
 
1790
                        "approval_duration": "1s",
 
1791
                        }
 
1792
    client_config = configparser.SafeConfigParser(client_defaults)
3090
1793
    client_config.read(os.path.join(server_settings["configdir"],
3091
1794
                                    "clients.conf"))
3092
 
 
 
1795
    
3093
1796
    global mandos_dbus_service
3094
1797
    mandos_dbus_service = None
3095
 
 
3096
 
    socketfd = None
3097
 
    if server_settings["socket"] != "":
3098
 
        socketfd = server_settings["socket"]
3099
 
    tcp_server = MandosServer(
3100
 
        (server_settings["address"], server_settings["port"]),
3101
 
        ClientHandler,
3102
 
        interface=(server_settings["interface"] or None),
3103
 
        use_ipv6=use_ipv6,
3104
 
        gnutls_priority=server_settings["priority"],
3105
 
        use_dbus=use_dbus,
3106
 
        socketfd=socketfd)
3107
 
    if not foreground:
3108
 
        pidfilename = "/run/mandos.pid"
3109
 
        if not os.path.isdir("/run/."):
3110
 
            pidfilename = "/var/run/mandos.pid"
3111
 
        pidfile = None
3112
 
        try:
3113
 
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3114
 
        except IOError as e:
3115
 
            logger.error("Could not open file %r", pidfilename,
3116
 
                         exc_info=e)
3117
 
 
3118
 
    for name, group in (("_mandos", "_mandos"),
3119
 
                        ("mandos", "mandos"),
3120
 
                        ("nobody", "nogroup")):
3121
 
        try:
3122
 
            uid = pwd.getpwnam(name).pw_uid
3123
 
            gid = pwd.getpwnam(group).pw_gid
3124
 
            break
 
1798
    
 
1799
    tcp_server = MandosServer((server_settings["address"],
 
1800
                               server_settings["port"]),
 
1801
                              ClientHandler,
 
1802
                              interface=(server_settings["interface"]
 
1803
                                         or None),
 
1804
                              use_ipv6=use_ipv6,
 
1805
                              gnutls_priority=
 
1806
                              server_settings["priority"],
 
1807
                              use_dbus=use_dbus)
 
1808
    if not debug:
 
1809
        pidfilename = "/var/run/mandos.pid"
 
1810
        try:
 
1811
            pidfile = open(pidfilename, "w")
 
1812
        except IOError:
 
1813
            logger.error("Could not open file %r", pidfilename)
 
1814
    
 
1815
    try:
 
1816
        uid = pwd.getpwnam("_mandos").pw_uid
 
1817
        gid = pwd.getpwnam("_mandos").pw_gid
 
1818
    except KeyError:
 
1819
        try:
 
1820
            uid = pwd.getpwnam("mandos").pw_uid
 
1821
            gid = pwd.getpwnam("mandos").pw_gid
3125
1822
        except KeyError:
3126
 
            continue
3127
 
    else:
3128
 
        uid = 65534
3129
 
        gid = 65534
 
1823
            try:
 
1824
                uid = pwd.getpwnam("nobody").pw_uid
 
1825
                gid = pwd.getpwnam("nobody").pw_gid
 
1826
            except KeyError:
 
1827
                uid = 65534
 
1828
                gid = 65534
3130
1829
    try:
3131
1830
        os.setgid(gid)
3132
1831
        os.setuid(uid)
3133
 
        if debug:
3134
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
 
                                                             gid))
3136
1832
    except OSError as error:
3137
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
 
                       .format(uid, gid, os.strerror(error.errno)))
3139
 
        if error.errno != errno.EPERM:
3140
 
            raise
 
1833
        if error[0] != errno.EPERM:
 
1834
            raise error
 
1835
    
 
1836
    if not debug and not debuglevel:
 
1837
        syslogger.setLevel(logging.WARNING)
 
1838
        console.setLevel(logging.WARNING)
 
1839
    if debuglevel:
 
1840
        level = getattr(logging, debuglevel.upper())
 
1841
        syslogger.setLevel(level)
 
1842
        console.setLevel(level)
3141
1843
 
3142
1844
    if debug:
3143
1845
        # Enable all possible GnuTLS debugging
3144
 
 
 
1846
        
3145
1847
        # "Use a log level over 10 to enable all debugging options."
3146
1848
        # - GnuTLS manual
3147
 
        gnutls.global_set_log_level(11)
3148
 
 
3149
 
        @gnutls.log_func
 
1849
        gnutls.library.functions.gnutls_global_set_log_level(11)
 
1850
        
 
1851
        @gnutls.library.types.gnutls_log_func
3150
1852
        def debug_gnutls(level, string):
3151
1853
            logger.debug("GnuTLS: %s", string[:-1])
3152
 
 
3153
 
        gnutls.global_set_log_function(debug_gnutls)
3154
 
 
 
1854
        
 
1855
        (gnutls.library.functions
 
1856
         .gnutls_global_set_log_function(debug_gnutls))
 
1857
        
3155
1858
        # Redirect stdin so all checkers get /dev/null
3156
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1859
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3157
1860
        os.dup2(null, sys.stdin.fileno())
3158
1861
        if null > 2:
3159
1862
            os.close(null)
3160
 
 
 
1863
    else:
 
1864
        # No console logging
 
1865
        logger.removeHandler(console)
 
1866
    
3161
1867
    # Need to fork before connecting to D-Bus
3162
 
    if not foreground:
 
1868
    if not debug:
3163
1869
        # Close all input and output, do double fork, etc.
3164
1870
        daemon()
3165
 
 
3166
 
    # multiprocessing will use threads, so before we use GLib we need
3167
 
    # to inform GLib that threads will be used.
3168
 
    GLib.threads_init()
3169
 
 
 
1871
    
3170
1872
    global main_loop
3171
1873
    # From the Avahi example code
3172
 
    DBusGMainLoop(set_as_default=True)
3173
 
    main_loop = GLib.MainLoop()
 
1874
    DBusGMainLoop(set_as_default=True )
 
1875
    main_loop = gobject.MainLoop()
3174
1876
    bus = dbus.SystemBus()
3175
1877
    # End of Avahi example code
3176
1878
    if use_dbus:
3177
1879
        try:
3178
 
            bus_name = dbus.service.BusName("se.recompile.Mandos",
3179
 
                                            bus,
3180
 
                                            do_not_queue=True)
3181
 
            old_bus_name = dbus.service.BusName(
3182
 
                "se.bsnet.fukt.Mandos", bus,
3183
 
                do_not_queue=True)
3184
 
        except dbus.exceptions.DBusException as e:
3185
 
            logger.error("Disabling D-Bus:", exc_info=e)
 
1880
            bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
 
1881
                                            bus, do_not_queue=True)
 
1882
        except dbus.exceptions.NameExistsException as e:
 
1883
            logger.error(unicode(e) + ", disabling D-Bus")
3186
1884
            use_dbus = False
3187
1885
            server_settings["use_dbus"] = False
3188
1886
            tcp_server.use_dbus = False
3189
 
    if zeroconf:
3190
 
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3191
 
        service = AvahiServiceToSyslog(
3192
 
            name=server_settings["servicename"],
3193
 
            servicetype="_mandos._tcp",
3194
 
            protocol=protocol,
3195
 
            bus=bus)
3196
 
        if server_settings["interface"]:
3197
 
            service.interface = if_nametoindex(
3198
 
                server_settings["interface"].encode("utf-8"))
3199
 
 
 
1887
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
1888
    service = AvahiService(name = server_settings["servicename"],
 
1889
                           servicetype = "_mandos._tcp",
 
1890
                           protocol = protocol, bus = bus)
 
1891
    if server_settings["interface"]:
 
1892
        service.interface = (if_nametoindex
 
1893
                             (str(server_settings["interface"])))
 
1894
    
3200
1895
    global multiprocessing_manager
3201
1896
    multiprocessing_manager = multiprocessing.Manager()
3202
 
 
 
1897
    
3203
1898
    client_class = Client
3204
1899
    if use_dbus:
3205
 
        client_class = functools.partial(ClientDBus, bus=bus)
3206
 
 
3207
 
    client_settings = Client.config_parser(client_config)
3208
 
    old_client_settings = {}
3209
 
    clients_data = {}
3210
 
 
3211
 
    # This is used to redirect stdout and stderr for checker processes
3212
 
    global wnull
3213
 
    wnull = open(os.devnull, "w")  # A writable /dev/null
3214
 
    # Only used if server is running in foreground but not in debug
3215
 
    # mode
3216
 
    if debug or not foreground:
3217
 
        wnull.close()
3218
 
 
3219
 
    # Get client data and settings from last running state.
3220
 
    if server_settings["restore"]:
3221
 
        try:
3222
 
            with open(stored_state_path, "rb") as stored_state:
3223
 
                if sys.version_info.major == 2:
3224
 
                    clients_data, old_client_settings = pickle.load(
3225
 
                        stored_state)
3226
 
                else:
3227
 
                    bytes_clients_data, bytes_old_client_settings = (
3228
 
                        pickle.load(stored_state, encoding="bytes"))
3229
 
                    #   Fix bytes to strings
3230
 
                    #  clients_data
3231
 
                    # .keys()
3232
 
                    clients_data = {(key.decode("utf-8")
3233
 
                                     if isinstance(key, bytes)
3234
 
                                     else key): value
3235
 
                                    for key, value in
3236
 
                                    bytes_clients_data.items()}
3237
 
                    del bytes_clients_data
3238
 
                    for key in clients_data:
3239
 
                        value = {(k.decode("utf-8")
3240
 
                                  if isinstance(k, bytes) else k): v
3241
 
                                 for k, v in
3242
 
                                 clients_data[key].items()}
3243
 
                        clients_data[key] = value
3244
 
                        # .client_structure
3245
 
                        value["client_structure"] = [
3246
 
                            (s.decode("utf-8")
3247
 
                             if isinstance(s, bytes)
3248
 
                             else s) for s in
3249
 
                            value["client_structure"]]
3250
 
                        # .name & .host
3251
 
                        for k in ("name", "host"):
3252
 
                            if isinstance(value[k], bytes):
3253
 
                                value[k] = value[k].decode("utf-8")
3254
 
                        if not value.has_key("key_id"):
3255
 
                            value["key_id"] = ""
3256
 
                        elif not value.has_key("fingerprint"):
3257
 
                            value["fingerprint"] = ""
3258
 
                    #  old_client_settings
3259
 
                    # .keys()
3260
 
                    old_client_settings = {
3261
 
                        (key.decode("utf-8")
3262
 
                         if isinstance(key, bytes)
3263
 
                         else key): value
3264
 
                        for key, value in
3265
 
                        bytes_old_client_settings.items()}
3266
 
                    del bytes_old_client_settings
3267
 
                    # .host
3268
 
                    for value in old_client_settings.values():
3269
 
                        if isinstance(value["host"], bytes):
3270
 
                            value["host"] = (value["host"]
3271
 
                                             .decode("utf-8"))
3272
 
            os.remove(stored_state_path)
3273
 
        except IOError as e:
3274
 
            if e.errno == errno.ENOENT:
3275
 
                logger.warning("Could not load persistent state:"
3276
 
                               " {}".format(os.strerror(e.errno)))
3277
 
            else:
3278
 
                logger.critical("Could not load persistent state:",
3279
 
                                exc_info=e)
3280
 
                raise
3281
 
        except EOFError as e:
3282
 
            logger.warning("Could not load persistent state: "
3283
 
                           "EOFError:",
3284
 
                           exc_info=e)
3285
 
 
3286
 
    with PGPEngine() as pgp:
3287
 
        for client_name, client in clients_data.items():
3288
 
            # Skip removed clients
3289
 
            if client_name not in client_settings:
3290
 
                continue
3291
 
 
3292
 
            # Decide which value to use after restoring saved state.
3293
 
            # We have three different values: Old config file,
3294
 
            # new config file, and saved state.
3295
 
            # New config value takes precedence if it differs from old
3296
 
            # config value, otherwise use saved state.
3297
 
            for name, value in client_settings[client_name].items():
3298
 
                try:
3299
 
                    # For each value in new config, check if it
3300
 
                    # differs from the old config value (Except for
3301
 
                    # the "secret" attribute)
3302
 
                    if (name != "secret"
3303
 
                        and (value !=
3304
 
                             old_client_settings[client_name][name])):
3305
 
                        client[name] = value
3306
 
                except KeyError:
3307
 
                    pass
3308
 
 
3309
 
            # Clients who has passed its expire date can still be
3310
 
            # enabled if its last checker was successful.  A Client
3311
 
            # whose checker succeeded before we stored its state is
3312
 
            # assumed to have successfully run all checkers during
3313
 
            # downtime.
3314
 
            if client["enabled"]:
3315
 
                if datetime.datetime.utcnow() >= client["expires"]:
3316
 
                    if not client["last_checked_ok"]:
3317
 
                        logger.warning(
3318
 
                            "disabling client {} - Client never "
3319
 
                            "performed a successful checker".format(
3320
 
                                client_name))
3321
 
                        client["enabled"] = False
3322
 
                    elif client["last_checker_status"] != 0:
3323
 
                        logger.warning(
3324
 
                            "disabling client {} - Client last"
3325
 
                            " checker failed with error code"
3326
 
                            " {}".format(
3327
 
                                client_name,
3328
 
                                client["last_checker_status"]))
3329
 
                        client["enabled"] = False
3330
 
                    else:
3331
 
                        client["expires"] = (
3332
 
                            datetime.datetime.utcnow()
3333
 
                            + client["timeout"])
3334
 
                        logger.debug("Last checker succeeded,"
3335
 
                                     " keeping {} enabled".format(
3336
 
                                         client_name))
 
1900
        client_class = functools.partial(ClientDBus, bus = bus)
 
1901
    def client_config_items(config, section):
 
1902
        special_settings = {
 
1903
            "approved_by_default":
 
1904
                lambda: config.getboolean(section,
 
1905
                                          "approved_by_default"),
 
1906
            }
 
1907
        for name, value in config.items(section):
3337
1908
            try:
3338
 
                client["secret"] = pgp.decrypt(
3339
 
                    client["encrypted_secret"],
3340
 
                    client_settings[client_name]["secret"])
3341
 
            except PGPError:
3342
 
                # If decryption fails, we use secret from new settings
3343
 
                logger.debug("Failed to decrypt {} old secret".format(
3344
 
                    client_name))
3345
 
                client["secret"] = (client_settings[client_name]
3346
 
                                    ["secret"])
3347
 
 
3348
 
    # Add/remove clients based on new changes made to config
3349
 
    for client_name in (set(old_client_settings)
3350
 
                        - set(client_settings)):
3351
 
        del clients_data[client_name]
3352
 
    for client_name in (set(client_settings)
3353
 
                        - set(old_client_settings)):
3354
 
        clients_data[client_name] = client_settings[client_name]
3355
 
 
3356
 
    # Create all client objects
3357
 
    for client_name, client in clients_data.items():
3358
 
        tcp_server.clients[client_name] = client_class(
3359
 
            name=client_name,
3360
 
            settings=client,
3361
 
            server_settings=server_settings)
3362
 
 
 
1909
                yield (name, special_settings[name]())
 
1910
            except KeyError:
 
1911
                yield (name, value)
 
1912
    
 
1913
    tcp_server.clients.update(set(
 
1914
            client_class(name = section,
 
1915
                         config= dict(client_config_items(
 
1916
                        client_config, section)))
 
1917
            for section in client_config.sections()))
3363
1918
    if not tcp_server.clients:
3364
1919
        logger.warning("No clients defined")
3365
 
 
3366
 
    if not foreground:
3367
 
        if pidfile is not None:
3368
 
            pid = os.getpid()
3369
 
            try:
3370
 
                with pidfile:
3371
 
                    print(pid, file=pidfile)
3372
 
            except IOError:
3373
 
                logger.error("Could not write to file %r with PID %d",
3374
 
                             pidfilename, pid)
3375
 
        del pidfile
 
1920
        
 
1921
    if not debug:
 
1922
        try:
 
1923
            with pidfile:
 
1924
                pid = os.getpid()
 
1925
                pidfile.write(str(pid) + "\n".encode("utf-8"))
 
1926
            del pidfile
 
1927
        except IOError:
 
1928
            logger.error("Could not write to file %r with PID %d",
 
1929
                         pidfilename, pid)
 
1930
        except NameError:
 
1931
            # "pidfile" was never created
 
1932
            pass
3376
1933
        del pidfilename
3377
 
 
3378
 
    for termsig in (signal.SIGHUP, signal.SIGTERM):
3379
 
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3380
 
                             lambda: main_loop.quit() and False)
3381
 
 
 
1934
        
 
1935
        signal.signal(signal.SIGINT, signal.SIG_IGN)
 
1936
 
 
1937
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
1938
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
 
1939
    
3382
1940
    if use_dbus:
3383
 
 
3384
 
        @alternate_dbus_interfaces(
3385
 
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3386
 
        class MandosDBusService(DBusObjectWithObjectManager):
 
1941
        class MandosDBusService(dbus.service.Object):
3387
1942
            """A D-Bus proxy object"""
3388
 
 
3389
1943
            def __init__(self):
3390
1944
                dbus.service.Object.__init__(self, bus, "/")
3391
 
 
3392
 
            _interface = "se.recompile.Mandos"
3393
 
 
 
1945
            _interface = "se.bsnet.fukt.Mandos"
 
1946
            
3394
1947
            @dbus.service.signal(_interface, signature="o")
3395
1948
            def ClientAdded(self, objpath):
3396
1949
                "D-Bus signal"
3397
1950
                pass
3398
 
 
 
1951
            
3399
1952
            @dbus.service.signal(_interface, signature="ss")
3400
 
            def ClientNotFound(self, key_id, address):
 
1953
            def ClientNotFound(self, fingerprint, address):
3401
1954
                "D-Bus signal"
3402
1955
                pass
3403
 
 
3404
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
 
                               "true"})
 
1956
            
3406
1957
            @dbus.service.signal(_interface, signature="os")
3407
1958
            def ClientRemoved(self, objpath, name):
3408
1959
                "D-Bus signal"
3409
1960
                pass
3410
 
 
3411
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
 
                               "true"})
 
1961
            
3413
1962
            @dbus.service.method(_interface, out_signature="ao")
3414
1963
            def GetAllClients(self):
3415
1964
                "D-Bus method"
3416
 
                return dbus.Array(c.dbus_object_path for c in
3417
 
                                  tcp_server.clients.values())
3418
 
 
3419
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3420
 
                               "true"})
 
1965
                return dbus.Array(c.dbus_object_path
 
1966
                                  for c in tcp_server.clients)
 
1967
            
3421
1968
            @dbus.service.method(_interface,
3422
1969
                                 out_signature="a{oa{sv}}")
3423
1970
            def GetAllClientsWithProperties(self):
3424
1971
                "D-Bus method"
3425
1972
                return dbus.Dictionary(
3426
 
                    {c.dbus_object_path: c.GetAll(
3427
 
                        "se.recompile.Mandos.Client")
3428
 
                     for c in tcp_server.clients.values()},
 
1973
                    ((c.dbus_object_path, c.GetAll(""))
 
1974
                     for c in tcp_server.clients),
3429
1975
                    signature="oa{sv}")
3430
 
 
 
1976
            
3431
1977
            @dbus.service.method(_interface, in_signature="o")
3432
1978
            def RemoveClient(self, object_path):
3433
1979
                "D-Bus method"
3434
 
                for c in tcp_server.clients.values():
 
1980
                for c in tcp_server.clients:
3435
1981
                    if c.dbus_object_path == object_path:
3436
 
                        del tcp_server.clients[c.name]
 
1982
                        tcp_server.clients.remove(c)
3437
1983
                        c.remove_from_connection()
3438
 
                        # Don't signal the disabling
 
1984
                        # Don't signal anything except ClientRemoved
3439
1985
                        c.disable(quiet=True)
3440
 
                        # Emit D-Bus signal for removal
3441
 
                        self.client_removed_signal(c)
 
1986
                        # Emit D-Bus signal
 
1987
                        self.ClientRemoved(object_path, c.name)
3442
1988
                        return
3443
1989
                raise KeyError(object_path)
3444
 
 
 
1990
            
3445
1991
            del _interface
3446
 
 
3447
 
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3448
 
                                 out_signature="a{oa{sa{sv}}}")
3449
 
            def GetManagedObjects(self):
3450
 
                """D-Bus method"""
3451
 
                return dbus.Dictionary(
3452
 
                    {client.dbus_object_path:
3453
 
                     dbus.Dictionary(
3454
 
                         {interface: client.GetAll(interface)
3455
 
                          for interface in
3456
 
                          client._get_all_interface_names()})
3457
 
                     for client in tcp_server.clients.values()})
3458
 
 
3459
 
            def client_added_signal(self, client):
3460
 
                """Send the new standard signal and the old signal"""
3461
 
                if use_dbus:
3462
 
                    # New standard signal
3463
 
                    self.InterfacesAdded(
3464
 
                        client.dbus_object_path,
3465
 
                        dbus.Dictionary(
3466
 
                            {interface: client.GetAll(interface)
3467
 
                             for interface in
3468
 
                             client._get_all_interface_names()}))
3469
 
                    # Old signal
3470
 
                    self.ClientAdded(client.dbus_object_path)
3471
 
 
3472
 
            def client_removed_signal(self, client):
3473
 
                """Send the new standard signal and the old signal"""
3474
 
                if use_dbus:
3475
 
                    # New standard signal
3476
 
                    self.InterfacesRemoved(
3477
 
                        client.dbus_object_path,
3478
 
                        client._get_all_interface_names())
3479
 
                    # Old signal
3480
 
                    self.ClientRemoved(client.dbus_object_path,
3481
 
                                       client.name)
3482
 
 
 
1992
        
3483
1993
        mandos_dbus_service = MandosDBusService()
3484
 
 
3485
 
    # Save modules to variables to exempt the modules from being
3486
 
    # unloaded before the function registered with atexit() is run.
3487
 
    mp = multiprocessing
3488
 
    wn = wnull
3489
 
 
 
1994
    
3490
1995
    def cleanup():
3491
1996
        "Cleanup function; run on exit"
3492
 
        if zeroconf:
3493
 
            service.cleanup()
3494
 
 
3495
 
        mp.active_children()
3496
 
        wn.close()
3497
 
        if not (tcp_server.clients or client_settings):
3498
 
            return
3499
 
 
3500
 
        # Store client before exiting. Secrets are encrypted with key
3501
 
        # based on what config file has. If config file is
3502
 
        # removed/edited, old secret will thus be unrecovable.
3503
 
        clients = {}
3504
 
        with PGPEngine() as pgp:
3505
 
            for client in tcp_server.clients.values():
3506
 
                key = client_settings[client.name]["secret"]
3507
 
                client.encrypted_secret = pgp.encrypt(client.secret,
3508
 
                                                      key)
3509
 
                client_dict = {}
3510
 
 
3511
 
                # A list of attributes that can not be pickled
3512
 
                # + secret.
3513
 
                exclude = {"bus", "changedstate", "secret",
3514
 
                           "checker", "server_settings"}
3515
 
                for name, typ in inspect.getmembers(dbus.service
3516
 
                                                    .Object):
3517
 
                    exclude.add(name)
3518
 
 
3519
 
                client_dict["encrypted_secret"] = (client
3520
 
                                                   .encrypted_secret)
3521
 
                for attr in client.client_structure:
3522
 
                    if attr not in exclude:
3523
 
                        client_dict[attr] = getattr(client, attr)
3524
 
 
3525
 
                clients[client.name] = client_dict
3526
 
                del client_settings[client.name]["secret"]
3527
 
 
3528
 
        try:
3529
 
            with tempfile.NamedTemporaryFile(
3530
 
                    mode='wb',
3531
 
                    suffix=".pickle",
3532
 
                    prefix='clients-',
3533
 
                    dir=os.path.dirname(stored_state_path),
3534
 
                    delete=False) as stored_state:
3535
 
                pickle.dump((clients, client_settings), stored_state,
3536
 
                            protocol=2)
3537
 
                tempname = stored_state.name
3538
 
            os.rename(tempname, stored_state_path)
3539
 
        except (IOError, OSError) as e:
3540
 
            if not debug:
3541
 
                try:
3542
 
                    os.remove(tempname)
3543
 
                except NameError:
3544
 
                    pass
3545
 
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3546
 
                logger.warning("Could not save persistent state: {}"
3547
 
                               .format(os.strerror(e.errno)))
3548
 
            else:
3549
 
                logger.warning("Could not save persistent state:",
3550
 
                               exc_info=e)
3551
 
                raise
3552
 
 
3553
 
        # Delete all clients, and settings from config
 
1997
        service.cleanup()
 
1998
        
3554
1999
        while tcp_server.clients:
3555
 
            name, client = tcp_server.clients.popitem()
 
2000
            client = tcp_server.clients.pop()
3556
2001
            if use_dbus:
3557
2002
                client.remove_from_connection()
3558
 
            # Don't signal the disabling
 
2003
            client.disable_hook = None
 
2004
            # Don't signal anything except ClientRemoved
3559
2005
            client.disable(quiet=True)
3560
 
            # Emit D-Bus signal for removal
3561
2006
            if use_dbus:
3562
 
                mandos_dbus_service.client_removed_signal(client)
3563
 
        client_settings.clear()
3564
 
 
 
2007
                # Emit D-Bus signal
 
2008
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
 
2009
                                                  client.name)
 
2010
    
3565
2011
    atexit.register(cleanup)
3566
 
 
3567
 
    for client in tcp_server.clients.values():
 
2012
    
 
2013
    for client in tcp_server.clients:
3568
2014
        if use_dbus:
3569
 
            # Emit D-Bus signal for adding
3570
 
            mandos_dbus_service.client_added_signal(client)
3571
 
        # Need to initiate checking of clients
3572
 
        if client.enabled:
3573
 
            client.init_checker()
3574
 
 
 
2015
            # Emit D-Bus signal
 
2016
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
 
2017
        client.enable()
 
2018
    
3575
2019
    tcp_server.enable()
3576
2020
    tcp_server.server_activate()
3577
 
 
 
2021
    
3578
2022
    # Find out what port we got
3579
 
    if zeroconf:
3580
 
        service.port = tcp_server.socket.getsockname()[1]
 
2023
    service.port = tcp_server.socket.getsockname()[1]
3581
2024
    if use_ipv6:
3582
2025
        logger.info("Now listening on address %r, port %d,"
3583
 
                    " flowinfo %d, scope_id %d",
3584
 
                    *tcp_server.socket.getsockname())
 
2026
                    " flowinfo %d, scope_id %d"
 
2027
                    % tcp_server.socket.getsockname())
3585
2028
    else:                       # IPv4
3586
 
        logger.info("Now listening on address %r, port %d",
3587
 
                    *tcp_server.socket.getsockname())
3588
 
 
3589
 
    # service.interface = tcp_server.socket.getsockname()[3]
3590
 
 
 
2029
        logger.info("Now listening on address %r, port %d"
 
2030
                    % tcp_server.socket.getsockname())
 
2031
    
 
2032
    #service.interface = tcp_server.socket.getsockname()[3]
 
2033
    
3591
2034
    try:
3592
 
        if zeroconf:
3593
 
            # From the Avahi example code
3594
 
            try:
3595
 
                service.activate()
3596
 
            except dbus.exceptions.DBusException as error:
3597
 
                logger.critical("D-Bus Exception", exc_info=error)
3598
 
                cleanup()
3599
 
                sys.exit(1)
3600
 
            # End of Avahi example code
3601
 
 
3602
 
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3603
 
                          lambda *args, **kwargs:
3604
 
                          (tcp_server.handle_request
3605
 
                           (*args[2:], **kwargs) or True))
3606
 
 
 
2035
        # From the Avahi example code
 
2036
        try:
 
2037
            service.activate()
 
2038
        except dbus.exceptions.DBusException as error:
 
2039
            logger.critical("DBusException: %s", error)
 
2040
            cleanup()
 
2041
            sys.exit(1)
 
2042
        # End of Avahi example code
 
2043
        
 
2044
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
2045
                             lambda *args, **kwargs:
 
2046
                             (tcp_server.handle_request
 
2047
                              (*args[2:], **kwargs) or True))
 
2048
        
3607
2049
        logger.debug("Starting main loop")
3608
2050
        main_loop.run()
3609
2051
    except AvahiError as error:
3610
 
        logger.critical("Avahi Error", exc_info=error)
 
2052
        logger.critical("AvahiError: %s", error)
3611
2053
        cleanup()
3612
2054
        sys.exit(1)
3613
2055
    except KeyboardInterrupt:
3618
2060
    # Must run before the D-Bus bus name gets deregistered
3619
2061
    cleanup()
3620
2062
 
3621
 
 
3622
2063
if __name__ == '__main__':
3623
2064
    main()